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drm/i915: Use atomic plane state in the primary plane update.
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_display.c
1 /*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 */
26
27 #include <linux/dmi.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
35 #include <drm/drmP.h>
36 #include "intel_drv.h"
37 #include <drm/i915_drm.h>
38 #include "i915_drv.h"
39 #include "i915_trace.h"
40 #include <drm/drm_atomic.h>
41 #include <drm/drm_atomic_helper.h>
42 #include <drm/drm_dp_helper.h>
43 #include <drm/drm_crtc_helper.h>
44 #include <drm/drm_plane_helper.h>
45 #include <drm/drm_rect.h>
46 #include <linux/dma_remapping.h>
47
48 /* Primary plane formats for gen <= 3 */
49 static const uint32_t i8xx_primary_formats[] = {
50 DRM_FORMAT_C8,
51 DRM_FORMAT_RGB565,
52 DRM_FORMAT_XRGB1555,
53 DRM_FORMAT_XRGB8888,
54 };
55
56 /* Primary plane formats for gen >= 4 */
57 static const uint32_t i965_primary_formats[] = {
58 DRM_FORMAT_C8,
59 DRM_FORMAT_RGB565,
60 DRM_FORMAT_XRGB8888,
61 DRM_FORMAT_XBGR8888,
62 DRM_FORMAT_XRGB2101010,
63 DRM_FORMAT_XBGR2101010,
64 };
65
66 static const uint32_t skl_primary_formats[] = {
67 DRM_FORMAT_C8,
68 DRM_FORMAT_RGB565,
69 DRM_FORMAT_XRGB8888,
70 DRM_FORMAT_XBGR8888,
71 DRM_FORMAT_ARGB8888,
72 DRM_FORMAT_ABGR8888,
73 DRM_FORMAT_XRGB2101010,
74 DRM_FORMAT_XBGR2101010,
75 DRM_FORMAT_YUYV,
76 DRM_FORMAT_YVYU,
77 DRM_FORMAT_UYVY,
78 DRM_FORMAT_VYUY,
79 };
80
81 /* Cursor formats */
82 static const uint32_t intel_cursor_formats[] = {
83 DRM_FORMAT_ARGB8888,
84 };
85
86 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
87
88 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
89 struct intel_crtc_state *pipe_config);
90 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
91 struct intel_crtc_state *pipe_config);
92
93 static int intel_framebuffer_init(struct drm_device *dev,
94 struct intel_framebuffer *ifb,
95 struct drm_mode_fb_cmd2 *mode_cmd,
96 struct drm_i915_gem_object *obj);
97 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
98 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
99 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
100 struct intel_link_m_n *m_n,
101 struct intel_link_m_n *m2_n2);
102 static void ironlake_set_pipeconf(struct drm_crtc *crtc);
103 static void haswell_set_pipeconf(struct drm_crtc *crtc);
104 static void intel_set_pipe_csc(struct drm_crtc *crtc);
105 static void vlv_prepare_pll(struct intel_crtc *crtc,
106 const struct intel_crtc_state *pipe_config);
107 static void chv_prepare_pll(struct intel_crtc *crtc,
108 const struct intel_crtc_state *pipe_config);
109 static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
110 static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
111 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
112 struct intel_crtc_state *crtc_state);
113 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
114 int num_connectors);
115 static void intel_modeset_setup_hw_state(struct drm_device *dev);
116
117 typedef struct {
118 int min, max;
119 } intel_range_t;
120
121 typedef struct {
122 int dot_limit;
123 int p2_slow, p2_fast;
124 } intel_p2_t;
125
126 typedef struct intel_limit intel_limit_t;
127 struct intel_limit {
128 intel_range_t dot, vco, n, m, m1, m2, p, p1;
129 intel_p2_t p2;
130 };
131
132 int
133 intel_pch_rawclk(struct drm_device *dev)
134 {
135 struct drm_i915_private *dev_priv = dev->dev_private;
136
137 WARN_ON(!HAS_PCH_SPLIT(dev));
138
139 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
140 }
141
142 /* hrawclock is 1/4 the FSB frequency */
143 int intel_hrawclk(struct drm_device *dev)
144 {
145 struct drm_i915_private *dev_priv = dev->dev_private;
146 uint32_t clkcfg;
147
148 /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */
149 if (IS_VALLEYVIEW(dev))
150 return 200;
151
152 clkcfg = I915_READ(CLKCFG);
153 switch (clkcfg & CLKCFG_FSB_MASK) {
154 case CLKCFG_FSB_400:
155 return 100;
156 case CLKCFG_FSB_533:
157 return 133;
158 case CLKCFG_FSB_667:
159 return 166;
160 case CLKCFG_FSB_800:
161 return 200;
162 case CLKCFG_FSB_1067:
163 return 266;
164 case CLKCFG_FSB_1333:
165 return 333;
166 /* these two are just a guess; one of them might be right */
167 case CLKCFG_FSB_1600:
168 case CLKCFG_FSB_1600_ALT:
169 return 400;
170 default:
171 return 133;
172 }
173 }
174
175 static inline u32 /* units of 100MHz */
176 intel_fdi_link_freq(struct drm_device *dev)
177 {
178 if (IS_GEN5(dev)) {
179 struct drm_i915_private *dev_priv = dev->dev_private;
180 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
181 } else
182 return 27;
183 }
184
185 static const intel_limit_t intel_limits_i8xx_dac = {
186 .dot = { .min = 25000, .max = 350000 },
187 .vco = { .min = 908000, .max = 1512000 },
188 .n = { .min = 2, .max = 16 },
189 .m = { .min = 96, .max = 140 },
190 .m1 = { .min = 18, .max = 26 },
191 .m2 = { .min = 6, .max = 16 },
192 .p = { .min = 4, .max = 128 },
193 .p1 = { .min = 2, .max = 33 },
194 .p2 = { .dot_limit = 165000,
195 .p2_slow = 4, .p2_fast = 2 },
196 };
197
198 static const intel_limit_t intel_limits_i8xx_dvo = {
199 .dot = { .min = 25000, .max = 350000 },
200 .vco = { .min = 908000, .max = 1512000 },
201 .n = { .min = 2, .max = 16 },
202 .m = { .min = 96, .max = 140 },
203 .m1 = { .min = 18, .max = 26 },
204 .m2 = { .min = 6, .max = 16 },
205 .p = { .min = 4, .max = 128 },
206 .p1 = { .min = 2, .max = 33 },
207 .p2 = { .dot_limit = 165000,
208 .p2_slow = 4, .p2_fast = 4 },
209 };
210
211 static const intel_limit_t intel_limits_i8xx_lvds = {
212 .dot = { .min = 25000, .max = 350000 },
213 .vco = { .min = 908000, .max = 1512000 },
214 .n = { .min = 2, .max = 16 },
215 .m = { .min = 96, .max = 140 },
216 .m1 = { .min = 18, .max = 26 },
217 .m2 = { .min = 6, .max = 16 },
218 .p = { .min = 4, .max = 128 },
219 .p1 = { .min = 1, .max = 6 },
220 .p2 = { .dot_limit = 165000,
221 .p2_slow = 14, .p2_fast = 7 },
222 };
223
224 static const intel_limit_t intel_limits_i9xx_sdvo = {
225 .dot = { .min = 20000, .max = 400000 },
226 .vco = { .min = 1400000, .max = 2800000 },
227 .n = { .min = 1, .max = 6 },
228 .m = { .min = 70, .max = 120 },
229 .m1 = { .min = 8, .max = 18 },
230 .m2 = { .min = 3, .max = 7 },
231 .p = { .min = 5, .max = 80 },
232 .p1 = { .min = 1, .max = 8 },
233 .p2 = { .dot_limit = 200000,
234 .p2_slow = 10, .p2_fast = 5 },
235 };
236
237 static const intel_limit_t intel_limits_i9xx_lvds = {
238 .dot = { .min = 20000, .max = 400000 },
239 .vco = { .min = 1400000, .max = 2800000 },
240 .n = { .min = 1, .max = 6 },
241 .m = { .min = 70, .max = 120 },
242 .m1 = { .min = 8, .max = 18 },
243 .m2 = { .min = 3, .max = 7 },
244 .p = { .min = 7, .max = 98 },
245 .p1 = { .min = 1, .max = 8 },
246 .p2 = { .dot_limit = 112000,
247 .p2_slow = 14, .p2_fast = 7 },
248 };
249
250
251 static const intel_limit_t intel_limits_g4x_sdvo = {
252 .dot = { .min = 25000, .max = 270000 },
253 .vco = { .min = 1750000, .max = 3500000},
254 .n = { .min = 1, .max = 4 },
255 .m = { .min = 104, .max = 138 },
256 .m1 = { .min = 17, .max = 23 },
257 .m2 = { .min = 5, .max = 11 },
258 .p = { .min = 10, .max = 30 },
259 .p1 = { .min = 1, .max = 3},
260 .p2 = { .dot_limit = 270000,
261 .p2_slow = 10,
262 .p2_fast = 10
263 },
264 };
265
266 static const intel_limit_t intel_limits_g4x_hdmi = {
267 .dot = { .min = 22000, .max = 400000 },
268 .vco = { .min = 1750000, .max = 3500000},
269 .n = { .min = 1, .max = 4 },
270 .m = { .min = 104, .max = 138 },
271 .m1 = { .min = 16, .max = 23 },
272 .m2 = { .min = 5, .max = 11 },
273 .p = { .min = 5, .max = 80 },
274 .p1 = { .min = 1, .max = 8},
275 .p2 = { .dot_limit = 165000,
276 .p2_slow = 10, .p2_fast = 5 },
277 };
278
279 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
280 .dot = { .min = 20000, .max = 115000 },
281 .vco = { .min = 1750000, .max = 3500000 },
282 .n = { .min = 1, .max = 3 },
283 .m = { .min = 104, .max = 138 },
284 .m1 = { .min = 17, .max = 23 },
285 .m2 = { .min = 5, .max = 11 },
286 .p = { .min = 28, .max = 112 },
287 .p1 = { .min = 2, .max = 8 },
288 .p2 = { .dot_limit = 0,
289 .p2_slow = 14, .p2_fast = 14
290 },
291 };
292
293 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
294 .dot = { .min = 80000, .max = 224000 },
295 .vco = { .min = 1750000, .max = 3500000 },
296 .n = { .min = 1, .max = 3 },
297 .m = { .min = 104, .max = 138 },
298 .m1 = { .min = 17, .max = 23 },
299 .m2 = { .min = 5, .max = 11 },
300 .p = { .min = 14, .max = 42 },
301 .p1 = { .min = 2, .max = 6 },
302 .p2 = { .dot_limit = 0,
303 .p2_slow = 7, .p2_fast = 7
304 },
305 };
306
307 static const intel_limit_t intel_limits_pineview_sdvo = {
308 .dot = { .min = 20000, .max = 400000},
309 .vco = { .min = 1700000, .max = 3500000 },
310 /* Pineview's Ncounter is a ring counter */
311 .n = { .min = 3, .max = 6 },
312 .m = { .min = 2, .max = 256 },
313 /* Pineview only has one combined m divider, which we treat as m2. */
314 .m1 = { .min = 0, .max = 0 },
315 .m2 = { .min = 0, .max = 254 },
316 .p = { .min = 5, .max = 80 },
317 .p1 = { .min = 1, .max = 8 },
318 .p2 = { .dot_limit = 200000,
319 .p2_slow = 10, .p2_fast = 5 },
320 };
321
322 static const intel_limit_t intel_limits_pineview_lvds = {
323 .dot = { .min = 20000, .max = 400000 },
324 .vco = { .min = 1700000, .max = 3500000 },
325 .n = { .min = 3, .max = 6 },
326 .m = { .min = 2, .max = 256 },
327 .m1 = { .min = 0, .max = 0 },
328 .m2 = { .min = 0, .max = 254 },
329 .p = { .min = 7, .max = 112 },
330 .p1 = { .min = 1, .max = 8 },
331 .p2 = { .dot_limit = 112000,
332 .p2_slow = 14, .p2_fast = 14 },
333 };
334
335 /* Ironlake / Sandybridge
336 *
337 * We calculate clock using (register_value + 2) for N/M1/M2, so here
338 * the range value for them is (actual_value - 2).
339 */
340 static const intel_limit_t intel_limits_ironlake_dac = {
341 .dot = { .min = 25000, .max = 350000 },
342 .vco = { .min = 1760000, .max = 3510000 },
343 .n = { .min = 1, .max = 5 },
344 .m = { .min = 79, .max = 127 },
345 .m1 = { .min = 12, .max = 22 },
346 .m2 = { .min = 5, .max = 9 },
347 .p = { .min = 5, .max = 80 },
348 .p1 = { .min = 1, .max = 8 },
349 .p2 = { .dot_limit = 225000,
350 .p2_slow = 10, .p2_fast = 5 },
351 };
352
353 static const intel_limit_t intel_limits_ironlake_single_lvds = {
354 .dot = { .min = 25000, .max = 350000 },
355 .vco = { .min = 1760000, .max = 3510000 },
356 .n = { .min = 1, .max = 3 },
357 .m = { .min = 79, .max = 118 },
358 .m1 = { .min = 12, .max = 22 },
359 .m2 = { .min = 5, .max = 9 },
360 .p = { .min = 28, .max = 112 },
361 .p1 = { .min = 2, .max = 8 },
362 .p2 = { .dot_limit = 225000,
363 .p2_slow = 14, .p2_fast = 14 },
364 };
365
366 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
367 .dot = { .min = 25000, .max = 350000 },
368 .vco = { .min = 1760000, .max = 3510000 },
369 .n = { .min = 1, .max = 3 },
370 .m = { .min = 79, .max = 127 },
371 .m1 = { .min = 12, .max = 22 },
372 .m2 = { .min = 5, .max = 9 },
373 .p = { .min = 14, .max = 56 },
374 .p1 = { .min = 2, .max = 8 },
375 .p2 = { .dot_limit = 225000,
376 .p2_slow = 7, .p2_fast = 7 },
377 };
378
379 /* LVDS 100mhz refclk limits. */
380 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
381 .dot = { .min = 25000, .max = 350000 },
382 .vco = { .min = 1760000, .max = 3510000 },
383 .n = { .min = 1, .max = 2 },
384 .m = { .min = 79, .max = 126 },
385 .m1 = { .min = 12, .max = 22 },
386 .m2 = { .min = 5, .max = 9 },
387 .p = { .min = 28, .max = 112 },
388 .p1 = { .min = 2, .max = 8 },
389 .p2 = { .dot_limit = 225000,
390 .p2_slow = 14, .p2_fast = 14 },
391 };
392
393 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
394 .dot = { .min = 25000, .max = 350000 },
395 .vco = { .min = 1760000, .max = 3510000 },
396 .n = { .min = 1, .max = 3 },
397 .m = { .min = 79, .max = 126 },
398 .m1 = { .min = 12, .max = 22 },
399 .m2 = { .min = 5, .max = 9 },
400 .p = { .min = 14, .max = 42 },
401 .p1 = { .min = 2, .max = 6 },
402 .p2 = { .dot_limit = 225000,
403 .p2_slow = 7, .p2_fast = 7 },
404 };
405
406 static const intel_limit_t intel_limits_vlv = {
407 /*
408 * These are the data rate limits (measured in fast clocks)
409 * since those are the strictest limits we have. The fast
410 * clock and actual rate limits are more relaxed, so checking
411 * them would make no difference.
412 */
413 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
414 .vco = { .min = 4000000, .max = 6000000 },
415 .n = { .min = 1, .max = 7 },
416 .m1 = { .min = 2, .max = 3 },
417 .m2 = { .min = 11, .max = 156 },
418 .p1 = { .min = 2, .max = 3 },
419 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
420 };
421
422 static const intel_limit_t intel_limits_chv = {
423 /*
424 * These are the data rate limits (measured in fast clocks)
425 * since those are the strictest limits we have. The fast
426 * clock and actual rate limits are more relaxed, so checking
427 * them would make no difference.
428 */
429 .dot = { .min = 25000 * 5, .max = 540000 * 5},
430 .vco = { .min = 4800000, .max = 6480000 },
431 .n = { .min = 1, .max = 1 },
432 .m1 = { .min = 2, .max = 2 },
433 .m2 = { .min = 24 << 22, .max = 175 << 22 },
434 .p1 = { .min = 2, .max = 4 },
435 .p2 = { .p2_slow = 1, .p2_fast = 14 },
436 };
437
438 static const intel_limit_t intel_limits_bxt = {
439 /* FIXME: find real dot limits */
440 .dot = { .min = 0, .max = INT_MAX },
441 .vco = { .min = 4800000, .max = 6700000 },
442 .n = { .min = 1, .max = 1 },
443 .m1 = { .min = 2, .max = 2 },
444 /* FIXME: find real m2 limits */
445 .m2 = { .min = 2 << 22, .max = 255 << 22 },
446 .p1 = { .min = 2, .max = 4 },
447 .p2 = { .p2_slow = 1, .p2_fast = 20 },
448 };
449
450 static bool
451 needs_modeset(struct drm_crtc_state *state)
452 {
453 return drm_atomic_crtc_needs_modeset(state);
454 }
455
456 /**
457 * Returns whether any output on the specified pipe is of the specified type
458 */
459 bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
460 {
461 struct drm_device *dev = crtc->base.dev;
462 struct intel_encoder *encoder;
463
464 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
465 if (encoder->type == type)
466 return true;
467
468 return false;
469 }
470
471 /**
472 * Returns whether any output on the specified pipe will have the specified
473 * type after a staged modeset is complete, i.e., the same as
474 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
475 * encoder->crtc.
476 */
477 static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
478 int type)
479 {
480 struct drm_atomic_state *state = crtc_state->base.state;
481 struct drm_connector *connector;
482 struct drm_connector_state *connector_state;
483 struct intel_encoder *encoder;
484 int i, num_connectors = 0;
485
486 for_each_connector_in_state(state, connector, connector_state, i) {
487 if (connector_state->crtc != crtc_state->base.crtc)
488 continue;
489
490 num_connectors++;
491
492 encoder = to_intel_encoder(connector_state->best_encoder);
493 if (encoder->type == type)
494 return true;
495 }
496
497 WARN_ON(num_connectors == 0);
498
499 return false;
500 }
501
502 static const intel_limit_t *
503 intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
504 {
505 struct drm_device *dev = crtc_state->base.crtc->dev;
506 const intel_limit_t *limit;
507
508 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
509 if (intel_is_dual_link_lvds(dev)) {
510 if (refclk == 100000)
511 limit = &intel_limits_ironlake_dual_lvds_100m;
512 else
513 limit = &intel_limits_ironlake_dual_lvds;
514 } else {
515 if (refclk == 100000)
516 limit = &intel_limits_ironlake_single_lvds_100m;
517 else
518 limit = &intel_limits_ironlake_single_lvds;
519 }
520 } else
521 limit = &intel_limits_ironlake_dac;
522
523 return limit;
524 }
525
526 static const intel_limit_t *
527 intel_g4x_limit(struct intel_crtc_state *crtc_state)
528 {
529 struct drm_device *dev = crtc_state->base.crtc->dev;
530 const intel_limit_t *limit;
531
532 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
533 if (intel_is_dual_link_lvds(dev))
534 limit = &intel_limits_g4x_dual_channel_lvds;
535 else
536 limit = &intel_limits_g4x_single_channel_lvds;
537 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
538 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
539 limit = &intel_limits_g4x_hdmi;
540 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
541 limit = &intel_limits_g4x_sdvo;
542 } else /* The option is for other outputs */
543 limit = &intel_limits_i9xx_sdvo;
544
545 return limit;
546 }
547
548 static const intel_limit_t *
549 intel_limit(struct intel_crtc_state *crtc_state, int refclk)
550 {
551 struct drm_device *dev = crtc_state->base.crtc->dev;
552 const intel_limit_t *limit;
553
554 if (IS_BROXTON(dev))
555 limit = &intel_limits_bxt;
556 else if (HAS_PCH_SPLIT(dev))
557 limit = intel_ironlake_limit(crtc_state, refclk);
558 else if (IS_G4X(dev)) {
559 limit = intel_g4x_limit(crtc_state);
560 } else if (IS_PINEVIEW(dev)) {
561 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
562 limit = &intel_limits_pineview_lvds;
563 else
564 limit = &intel_limits_pineview_sdvo;
565 } else if (IS_CHERRYVIEW(dev)) {
566 limit = &intel_limits_chv;
567 } else if (IS_VALLEYVIEW(dev)) {
568 limit = &intel_limits_vlv;
569 } else if (!IS_GEN2(dev)) {
570 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
571 limit = &intel_limits_i9xx_lvds;
572 else
573 limit = &intel_limits_i9xx_sdvo;
574 } else {
575 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
576 limit = &intel_limits_i8xx_lvds;
577 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
578 limit = &intel_limits_i8xx_dvo;
579 else
580 limit = &intel_limits_i8xx_dac;
581 }
582 return limit;
583 }
584
585 /*
586 * Platform specific helpers to calculate the port PLL loopback- (clock.m),
587 * and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
588 * (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
589 * The helpers' return value is the rate of the clock that is fed to the
590 * display engine's pipe which can be the above fast dot clock rate or a
591 * divided-down version of it.
592 */
593 /* m1 is reserved as 0 in Pineview, n is a ring counter */
594 static int pnv_calc_dpll_params(int refclk, intel_clock_t *clock)
595 {
596 clock->m = clock->m2 + 2;
597 clock->p = clock->p1 * clock->p2;
598 if (WARN_ON(clock->n == 0 || clock->p == 0))
599 return 0;
600 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
601 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
602
603 return clock->dot;
604 }
605
606 static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
607 {
608 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
609 }
610
611 static int i9xx_calc_dpll_params(int refclk, intel_clock_t *clock)
612 {
613 clock->m = i9xx_dpll_compute_m(clock);
614 clock->p = clock->p1 * clock->p2;
615 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
616 return 0;
617 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
618 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
619
620 return clock->dot;
621 }
622
623 static int vlv_calc_dpll_params(int refclk, intel_clock_t *clock)
624 {
625 clock->m = clock->m1 * clock->m2;
626 clock->p = clock->p1 * clock->p2;
627 if (WARN_ON(clock->n == 0 || clock->p == 0))
628 return 0;
629 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
630 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
631
632 return clock->dot / 5;
633 }
634
635 int chv_calc_dpll_params(int refclk, intel_clock_t *clock)
636 {
637 clock->m = clock->m1 * clock->m2;
638 clock->p = clock->p1 * clock->p2;
639 if (WARN_ON(clock->n == 0 || clock->p == 0))
640 return 0;
641 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
642 clock->n << 22);
643 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
644
645 return clock->dot / 5;
646 }
647
648 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
649 /**
650 * Returns whether the given set of divisors are valid for a given refclk with
651 * the given connectors.
652 */
653
654 static bool intel_PLL_is_valid(struct drm_device *dev,
655 const intel_limit_t *limit,
656 const intel_clock_t *clock)
657 {
658 if (clock->n < limit->n.min || limit->n.max < clock->n)
659 INTELPllInvalid("n out of range\n");
660 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
661 INTELPllInvalid("p1 out of range\n");
662 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
663 INTELPllInvalid("m2 out of range\n");
664 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
665 INTELPllInvalid("m1 out of range\n");
666
667 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) && !IS_BROXTON(dev))
668 if (clock->m1 <= clock->m2)
669 INTELPllInvalid("m1 <= m2\n");
670
671 if (!IS_VALLEYVIEW(dev) && !IS_BROXTON(dev)) {
672 if (clock->p < limit->p.min || limit->p.max < clock->p)
673 INTELPllInvalid("p out of range\n");
674 if (clock->m < limit->m.min || limit->m.max < clock->m)
675 INTELPllInvalid("m out of range\n");
676 }
677
678 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
679 INTELPllInvalid("vco out of range\n");
680 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
681 * connector, etc., rather than just a single range.
682 */
683 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
684 INTELPllInvalid("dot out of range\n");
685
686 return true;
687 }
688
689 static int
690 i9xx_select_p2_div(const intel_limit_t *limit,
691 const struct intel_crtc_state *crtc_state,
692 int target)
693 {
694 struct drm_device *dev = crtc_state->base.crtc->dev;
695
696 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
697 /*
698 * For LVDS just rely on its current settings for dual-channel.
699 * We haven't figured out how to reliably set up different
700 * single/dual channel state, if we even can.
701 */
702 if (intel_is_dual_link_lvds(dev))
703 return limit->p2.p2_fast;
704 else
705 return limit->p2.p2_slow;
706 } else {
707 if (target < limit->p2.dot_limit)
708 return limit->p2.p2_slow;
709 else
710 return limit->p2.p2_fast;
711 }
712 }
713
714 static bool
715 i9xx_find_best_dpll(const intel_limit_t *limit,
716 struct intel_crtc_state *crtc_state,
717 int target, int refclk, intel_clock_t *match_clock,
718 intel_clock_t *best_clock)
719 {
720 struct drm_device *dev = crtc_state->base.crtc->dev;
721 intel_clock_t clock;
722 int err = target;
723
724 memset(best_clock, 0, sizeof(*best_clock));
725
726 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
727
728 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
729 clock.m1++) {
730 for (clock.m2 = limit->m2.min;
731 clock.m2 <= limit->m2.max; clock.m2++) {
732 if (clock.m2 >= clock.m1)
733 break;
734 for (clock.n = limit->n.min;
735 clock.n <= limit->n.max; clock.n++) {
736 for (clock.p1 = limit->p1.min;
737 clock.p1 <= limit->p1.max; clock.p1++) {
738 int this_err;
739
740 i9xx_calc_dpll_params(refclk, &clock);
741 if (!intel_PLL_is_valid(dev, limit,
742 &clock))
743 continue;
744 if (match_clock &&
745 clock.p != match_clock->p)
746 continue;
747
748 this_err = abs(clock.dot - target);
749 if (this_err < err) {
750 *best_clock = clock;
751 err = this_err;
752 }
753 }
754 }
755 }
756 }
757
758 return (err != target);
759 }
760
761 static bool
762 pnv_find_best_dpll(const intel_limit_t *limit,
763 struct intel_crtc_state *crtc_state,
764 int target, int refclk, intel_clock_t *match_clock,
765 intel_clock_t *best_clock)
766 {
767 struct drm_device *dev = crtc_state->base.crtc->dev;
768 intel_clock_t clock;
769 int err = target;
770
771 memset(best_clock, 0, sizeof(*best_clock));
772
773 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
774
775 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
776 clock.m1++) {
777 for (clock.m2 = limit->m2.min;
778 clock.m2 <= limit->m2.max; clock.m2++) {
779 for (clock.n = limit->n.min;
780 clock.n <= limit->n.max; clock.n++) {
781 for (clock.p1 = limit->p1.min;
782 clock.p1 <= limit->p1.max; clock.p1++) {
783 int this_err;
784
785 pnv_calc_dpll_params(refclk, &clock);
786 if (!intel_PLL_is_valid(dev, limit,
787 &clock))
788 continue;
789 if (match_clock &&
790 clock.p != match_clock->p)
791 continue;
792
793 this_err = abs(clock.dot - target);
794 if (this_err < err) {
795 *best_clock = clock;
796 err = this_err;
797 }
798 }
799 }
800 }
801 }
802
803 return (err != target);
804 }
805
806 static bool
807 g4x_find_best_dpll(const intel_limit_t *limit,
808 struct intel_crtc_state *crtc_state,
809 int target, int refclk, intel_clock_t *match_clock,
810 intel_clock_t *best_clock)
811 {
812 struct drm_device *dev = crtc_state->base.crtc->dev;
813 intel_clock_t clock;
814 int max_n;
815 bool found = false;
816 /* approximately equals target * 0.00585 */
817 int err_most = (target >> 8) + (target >> 9);
818
819 memset(best_clock, 0, sizeof(*best_clock));
820
821 clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
822
823 max_n = limit->n.max;
824 /* based on hardware requirement, prefer smaller n to precision */
825 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
826 /* based on hardware requirement, prefere larger m1,m2 */
827 for (clock.m1 = limit->m1.max;
828 clock.m1 >= limit->m1.min; clock.m1--) {
829 for (clock.m2 = limit->m2.max;
830 clock.m2 >= limit->m2.min; clock.m2--) {
831 for (clock.p1 = limit->p1.max;
832 clock.p1 >= limit->p1.min; clock.p1--) {
833 int this_err;
834
835 i9xx_calc_dpll_params(refclk, &clock);
836 if (!intel_PLL_is_valid(dev, limit,
837 &clock))
838 continue;
839
840 this_err = abs(clock.dot - target);
841 if (this_err < err_most) {
842 *best_clock = clock;
843 err_most = this_err;
844 max_n = clock.n;
845 found = true;
846 }
847 }
848 }
849 }
850 }
851 return found;
852 }
853
854 /*
855 * Check if the calculated PLL configuration is more optimal compared to the
856 * best configuration and error found so far. Return the calculated error.
857 */
858 static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
859 const intel_clock_t *calculated_clock,
860 const intel_clock_t *best_clock,
861 unsigned int best_error_ppm,
862 unsigned int *error_ppm)
863 {
864 /*
865 * For CHV ignore the error and consider only the P value.
866 * Prefer a bigger P value based on HW requirements.
867 */
868 if (IS_CHERRYVIEW(dev)) {
869 *error_ppm = 0;
870
871 return calculated_clock->p > best_clock->p;
872 }
873
874 if (WARN_ON_ONCE(!target_freq))
875 return false;
876
877 *error_ppm = div_u64(1000000ULL *
878 abs(target_freq - calculated_clock->dot),
879 target_freq);
880 /*
881 * Prefer a better P value over a better (smaller) error if the error
882 * is small. Ensure this preference for future configurations too by
883 * setting the error to 0.
884 */
885 if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
886 *error_ppm = 0;
887
888 return true;
889 }
890
891 return *error_ppm + 10 < best_error_ppm;
892 }
893
894 static bool
895 vlv_find_best_dpll(const intel_limit_t *limit,
896 struct intel_crtc_state *crtc_state,
897 int target, int refclk, intel_clock_t *match_clock,
898 intel_clock_t *best_clock)
899 {
900 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
901 struct drm_device *dev = crtc->base.dev;
902 intel_clock_t clock;
903 unsigned int bestppm = 1000000;
904 /* min update 19.2 MHz */
905 int max_n = min(limit->n.max, refclk / 19200);
906 bool found = false;
907
908 target *= 5; /* fast clock */
909
910 memset(best_clock, 0, sizeof(*best_clock));
911
912 /* based on hardware requirement, prefer smaller n to precision */
913 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
914 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
915 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
916 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
917 clock.p = clock.p1 * clock.p2;
918 /* based on hardware requirement, prefer bigger m1,m2 values */
919 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
920 unsigned int ppm;
921
922 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
923 refclk * clock.m1);
924
925 vlv_calc_dpll_params(refclk, &clock);
926
927 if (!intel_PLL_is_valid(dev, limit,
928 &clock))
929 continue;
930
931 if (!vlv_PLL_is_optimal(dev, target,
932 &clock,
933 best_clock,
934 bestppm, &ppm))
935 continue;
936
937 *best_clock = clock;
938 bestppm = ppm;
939 found = true;
940 }
941 }
942 }
943 }
944
945 return found;
946 }
947
948 static bool
949 chv_find_best_dpll(const intel_limit_t *limit,
950 struct intel_crtc_state *crtc_state,
951 int target, int refclk, intel_clock_t *match_clock,
952 intel_clock_t *best_clock)
953 {
954 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
955 struct drm_device *dev = crtc->base.dev;
956 unsigned int best_error_ppm;
957 intel_clock_t clock;
958 uint64_t m2;
959 int found = false;
960
961 memset(best_clock, 0, sizeof(*best_clock));
962 best_error_ppm = 1000000;
963
964 /*
965 * Based on hardware doc, the n always set to 1, and m1 always
966 * set to 2. If requires to support 200Mhz refclk, we need to
967 * revisit this because n may not 1 anymore.
968 */
969 clock.n = 1, clock.m1 = 2;
970 target *= 5; /* fast clock */
971
972 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
973 for (clock.p2 = limit->p2.p2_fast;
974 clock.p2 >= limit->p2.p2_slow;
975 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
976 unsigned int error_ppm;
977
978 clock.p = clock.p1 * clock.p2;
979
980 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
981 clock.n) << 22, refclk * clock.m1);
982
983 if (m2 > INT_MAX/clock.m1)
984 continue;
985
986 clock.m2 = m2;
987
988 chv_calc_dpll_params(refclk, &clock);
989
990 if (!intel_PLL_is_valid(dev, limit, &clock))
991 continue;
992
993 if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
994 best_error_ppm, &error_ppm))
995 continue;
996
997 *best_clock = clock;
998 best_error_ppm = error_ppm;
999 found = true;
1000 }
1001 }
1002
1003 return found;
1004 }
1005
1006 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
1007 intel_clock_t *best_clock)
1008 {
1009 int refclk = i9xx_get_refclk(crtc_state, 0);
1010
1011 return chv_find_best_dpll(intel_limit(crtc_state, refclk), crtc_state,
1012 target_clock, refclk, NULL, best_clock);
1013 }
1014
1015 bool intel_crtc_active(struct drm_crtc *crtc)
1016 {
1017 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1018
1019 /* Be paranoid as we can arrive here with only partial
1020 * state retrieved from the hardware during setup.
1021 *
1022 * We can ditch the adjusted_mode.crtc_clock check as soon
1023 * as Haswell has gained clock readout/fastboot support.
1024 *
1025 * We can ditch the crtc->primary->fb check as soon as we can
1026 * properly reconstruct framebuffers.
1027 *
1028 * FIXME: The intel_crtc->active here should be switched to
1029 * crtc->state->active once we have proper CRTC states wired up
1030 * for atomic.
1031 */
1032 return intel_crtc->active && crtc->primary->state->fb &&
1033 intel_crtc->config->base.adjusted_mode.crtc_clock;
1034 }
1035
1036 enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1037 enum pipe pipe)
1038 {
1039 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1040 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1041
1042 return intel_crtc->config->cpu_transcoder;
1043 }
1044
1045 static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
1046 {
1047 struct drm_i915_private *dev_priv = dev->dev_private;
1048 u32 reg = PIPEDSL(pipe);
1049 u32 line1, line2;
1050 u32 line_mask;
1051
1052 if (IS_GEN2(dev))
1053 line_mask = DSL_LINEMASK_GEN2;
1054 else
1055 line_mask = DSL_LINEMASK_GEN3;
1056
1057 line1 = I915_READ(reg) & line_mask;
1058 msleep(5);
1059 line2 = I915_READ(reg) & line_mask;
1060
1061 return line1 == line2;
1062 }
1063
1064 /*
1065 * intel_wait_for_pipe_off - wait for pipe to turn off
1066 * @crtc: crtc whose pipe to wait for
1067 *
1068 * After disabling a pipe, we can't wait for vblank in the usual way,
1069 * spinning on the vblank interrupt status bit, since we won't actually
1070 * see an interrupt when the pipe is disabled.
1071 *
1072 * On Gen4 and above:
1073 * wait for the pipe register state bit to turn off
1074 *
1075 * Otherwise:
1076 * wait for the display line value to settle (it usually
1077 * ends up stopping at the start of the next frame).
1078 *
1079 */
1080 static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
1081 {
1082 struct drm_device *dev = crtc->base.dev;
1083 struct drm_i915_private *dev_priv = dev->dev_private;
1084 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
1085 enum pipe pipe = crtc->pipe;
1086
1087 if (INTEL_INFO(dev)->gen >= 4) {
1088 int reg = PIPECONF(cpu_transcoder);
1089
1090 /* Wait for the Pipe State to go off */
1091 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
1092 100))
1093 WARN(1, "pipe_off wait timed out\n");
1094 } else {
1095 /* Wait for the display line to settle */
1096 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
1097 WARN(1, "pipe_off wait timed out\n");
1098 }
1099 }
1100
1101 static const char *state_string(bool enabled)
1102 {
1103 return enabled ? "on" : "off";
1104 }
1105
1106 /* Only for pre-ILK configs */
1107 void assert_pll(struct drm_i915_private *dev_priv,
1108 enum pipe pipe, bool state)
1109 {
1110 int reg;
1111 u32 val;
1112 bool cur_state;
1113
1114 reg = DPLL(pipe);
1115 val = I915_READ(reg);
1116 cur_state = !!(val & DPLL_VCO_ENABLE);
1117 I915_STATE_WARN(cur_state != state,
1118 "PLL state assertion failure (expected %s, current %s)\n",
1119 state_string(state), state_string(cur_state));
1120 }
1121
1122 /* XXX: the dsi pll is shared between MIPI DSI ports */
1123 static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1124 {
1125 u32 val;
1126 bool cur_state;
1127
1128 mutex_lock(&dev_priv->sb_lock);
1129 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1130 mutex_unlock(&dev_priv->sb_lock);
1131
1132 cur_state = val & DSI_PLL_VCO_EN;
1133 I915_STATE_WARN(cur_state != state,
1134 "DSI PLL state assertion failure (expected %s, current %s)\n",
1135 state_string(state), state_string(cur_state));
1136 }
1137 #define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1138 #define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1139
1140 struct intel_shared_dpll *
1141 intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
1142 {
1143 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
1144
1145 if (crtc->config->shared_dpll < 0)
1146 return NULL;
1147
1148 return &dev_priv->shared_dplls[crtc->config->shared_dpll];
1149 }
1150
1151 /* For ILK+ */
1152 void assert_shared_dpll(struct drm_i915_private *dev_priv,
1153 struct intel_shared_dpll *pll,
1154 bool state)
1155 {
1156 bool cur_state;
1157 struct intel_dpll_hw_state hw_state;
1158
1159 if (WARN (!pll,
1160 "asserting DPLL %s with no DPLL\n", state_string(state)))
1161 return;
1162
1163 cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
1164 I915_STATE_WARN(cur_state != state,
1165 "%s assertion failure (expected %s, current %s)\n",
1166 pll->name, state_string(state), state_string(cur_state));
1167 }
1168
1169 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1170 enum pipe pipe, bool state)
1171 {
1172 int reg;
1173 u32 val;
1174 bool cur_state;
1175 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1176 pipe);
1177
1178 if (HAS_DDI(dev_priv->dev)) {
1179 /* DDI does not have a specific FDI_TX register */
1180 reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1181 val = I915_READ(reg);
1182 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
1183 } else {
1184 reg = FDI_TX_CTL(pipe);
1185 val = I915_READ(reg);
1186 cur_state = !!(val & FDI_TX_ENABLE);
1187 }
1188 I915_STATE_WARN(cur_state != state,
1189 "FDI TX state assertion failure (expected %s, current %s)\n",
1190 state_string(state), state_string(cur_state));
1191 }
1192 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1193 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1194
1195 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1196 enum pipe pipe, bool state)
1197 {
1198 int reg;
1199 u32 val;
1200 bool cur_state;
1201
1202 reg = FDI_RX_CTL(pipe);
1203 val = I915_READ(reg);
1204 cur_state = !!(val & FDI_RX_ENABLE);
1205 I915_STATE_WARN(cur_state != state,
1206 "FDI RX state assertion failure (expected %s, current %s)\n",
1207 state_string(state), state_string(cur_state));
1208 }
1209 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1210 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1211
1212 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1213 enum pipe pipe)
1214 {
1215 int reg;
1216 u32 val;
1217
1218 /* ILK FDI PLL is always enabled */
1219 if (INTEL_INFO(dev_priv->dev)->gen == 5)
1220 return;
1221
1222 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1223 if (HAS_DDI(dev_priv->dev))
1224 return;
1225
1226 reg = FDI_TX_CTL(pipe);
1227 val = I915_READ(reg);
1228 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1229 }
1230
1231 void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1232 enum pipe pipe, bool state)
1233 {
1234 int reg;
1235 u32 val;
1236 bool cur_state;
1237
1238 reg = FDI_RX_CTL(pipe);
1239 val = I915_READ(reg);
1240 cur_state = !!(val & FDI_RX_PLL_ENABLE);
1241 I915_STATE_WARN(cur_state != state,
1242 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1243 state_string(state), state_string(cur_state));
1244 }
1245
1246 void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1247 enum pipe pipe)
1248 {
1249 struct drm_device *dev = dev_priv->dev;
1250 int pp_reg;
1251 u32 val;
1252 enum pipe panel_pipe = PIPE_A;
1253 bool locked = true;
1254
1255 if (WARN_ON(HAS_DDI(dev)))
1256 return;
1257
1258 if (HAS_PCH_SPLIT(dev)) {
1259 u32 port_sel;
1260
1261 pp_reg = PCH_PP_CONTROL;
1262 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1263
1264 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1265 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1266 panel_pipe = PIPE_B;
1267 /* XXX: else fix for eDP */
1268 } else if (IS_VALLEYVIEW(dev)) {
1269 /* presumably write lock depends on pipe, not port select */
1270 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1271 panel_pipe = pipe;
1272 } else {
1273 pp_reg = PP_CONTROL;
1274 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1275 panel_pipe = PIPE_B;
1276 }
1277
1278 val = I915_READ(pp_reg);
1279 if (!(val & PANEL_POWER_ON) ||
1280 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
1281 locked = false;
1282
1283 I915_STATE_WARN(panel_pipe == pipe && locked,
1284 "panel assertion failure, pipe %c regs locked\n",
1285 pipe_name(pipe));
1286 }
1287
1288 static void assert_cursor(struct drm_i915_private *dev_priv,
1289 enum pipe pipe, bool state)
1290 {
1291 struct drm_device *dev = dev_priv->dev;
1292 bool cur_state;
1293
1294 if (IS_845G(dev) || IS_I865G(dev))
1295 cur_state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
1296 else
1297 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
1298
1299 I915_STATE_WARN(cur_state != state,
1300 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1301 pipe_name(pipe), state_string(state), state_string(cur_state));
1302 }
1303 #define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1304 #define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1305
1306 void assert_pipe(struct drm_i915_private *dev_priv,
1307 enum pipe pipe, bool state)
1308 {
1309 int reg;
1310 u32 val;
1311 bool cur_state;
1312 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1313 pipe);
1314
1315 /* if we need the pipe quirk it must be always on */
1316 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1317 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1318 state = true;
1319
1320 if (!intel_display_power_is_enabled(dev_priv,
1321 POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
1322 cur_state = false;
1323 } else {
1324 reg = PIPECONF(cpu_transcoder);
1325 val = I915_READ(reg);
1326 cur_state = !!(val & PIPECONF_ENABLE);
1327 }
1328
1329 I915_STATE_WARN(cur_state != state,
1330 "pipe %c assertion failure (expected %s, current %s)\n",
1331 pipe_name(pipe), state_string(state), state_string(cur_state));
1332 }
1333
1334 static void assert_plane(struct drm_i915_private *dev_priv,
1335 enum plane plane, bool state)
1336 {
1337 int reg;
1338 u32 val;
1339 bool cur_state;
1340
1341 reg = DSPCNTR(plane);
1342 val = I915_READ(reg);
1343 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1344 I915_STATE_WARN(cur_state != state,
1345 "plane %c assertion failure (expected %s, current %s)\n",
1346 plane_name(plane), state_string(state), state_string(cur_state));
1347 }
1348
1349 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1350 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1351
1352 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1353 enum pipe pipe)
1354 {
1355 struct drm_device *dev = dev_priv->dev;
1356 int reg, i;
1357 u32 val;
1358 int cur_pipe;
1359
1360 /* Primary planes are fixed to pipes on gen4+ */
1361 if (INTEL_INFO(dev)->gen >= 4) {
1362 reg = DSPCNTR(pipe);
1363 val = I915_READ(reg);
1364 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
1365 "plane %c assertion failure, should be disabled but not\n",
1366 plane_name(pipe));
1367 return;
1368 }
1369
1370 /* Need to check both planes against the pipe */
1371 for_each_pipe(dev_priv, i) {
1372 reg = DSPCNTR(i);
1373 val = I915_READ(reg);
1374 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1375 DISPPLANE_SEL_PIPE_SHIFT;
1376 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1377 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1378 plane_name(i), pipe_name(pipe));
1379 }
1380 }
1381
1382 static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1383 enum pipe pipe)
1384 {
1385 struct drm_device *dev = dev_priv->dev;
1386 int reg, sprite;
1387 u32 val;
1388
1389 if (INTEL_INFO(dev)->gen >= 9) {
1390 for_each_sprite(dev_priv, pipe, sprite) {
1391 val = I915_READ(PLANE_CTL(pipe, sprite));
1392 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
1393 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1394 sprite, pipe_name(pipe));
1395 }
1396 } else if (IS_VALLEYVIEW(dev)) {
1397 for_each_sprite(dev_priv, pipe, sprite) {
1398 reg = SPCNTR(pipe, sprite);
1399 val = I915_READ(reg);
1400 I915_STATE_WARN(val & SP_ENABLE,
1401 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1402 sprite_name(pipe, sprite), pipe_name(pipe));
1403 }
1404 } else if (INTEL_INFO(dev)->gen >= 7) {
1405 reg = SPRCTL(pipe);
1406 val = I915_READ(reg);
1407 I915_STATE_WARN(val & SPRITE_ENABLE,
1408 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1409 plane_name(pipe), pipe_name(pipe));
1410 } else if (INTEL_INFO(dev)->gen >= 5) {
1411 reg = DVSCNTR(pipe);
1412 val = I915_READ(reg);
1413 I915_STATE_WARN(val & DVS_ENABLE,
1414 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1415 plane_name(pipe), pipe_name(pipe));
1416 }
1417 }
1418
1419 static void assert_vblank_disabled(struct drm_crtc *crtc)
1420 {
1421 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
1422 drm_crtc_vblank_put(crtc);
1423 }
1424
1425 static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1426 {
1427 u32 val;
1428 bool enabled;
1429
1430 I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
1431
1432 val = I915_READ(PCH_DREF_CONTROL);
1433 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1434 DREF_SUPERSPREAD_SOURCE_MASK));
1435 I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1436 }
1437
1438 static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1439 enum pipe pipe)
1440 {
1441 int reg;
1442 u32 val;
1443 bool enabled;
1444
1445 reg = PCH_TRANSCONF(pipe);
1446 val = I915_READ(reg);
1447 enabled = !!(val & TRANS_ENABLE);
1448 I915_STATE_WARN(enabled,
1449 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1450 pipe_name(pipe));
1451 }
1452
1453 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1454 enum pipe pipe, u32 port_sel, u32 val)
1455 {
1456 if ((val & DP_PORT_EN) == 0)
1457 return false;
1458
1459 if (HAS_PCH_CPT(dev_priv->dev)) {
1460 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1461 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1462 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1463 return false;
1464 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1465 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1466 return false;
1467 } else {
1468 if ((val & DP_PIPE_MASK) != (pipe << 30))
1469 return false;
1470 }
1471 return true;
1472 }
1473
1474 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1475 enum pipe pipe, u32 val)
1476 {
1477 if ((val & SDVO_ENABLE) == 0)
1478 return false;
1479
1480 if (HAS_PCH_CPT(dev_priv->dev)) {
1481 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1482 return false;
1483 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1484 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1485 return false;
1486 } else {
1487 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1488 return false;
1489 }
1490 return true;
1491 }
1492
1493 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1494 enum pipe pipe, u32 val)
1495 {
1496 if ((val & LVDS_PORT_EN) == 0)
1497 return false;
1498
1499 if (HAS_PCH_CPT(dev_priv->dev)) {
1500 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1501 return false;
1502 } else {
1503 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1504 return false;
1505 }
1506 return true;
1507 }
1508
1509 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1510 enum pipe pipe, u32 val)
1511 {
1512 if ((val & ADPA_DAC_ENABLE) == 0)
1513 return false;
1514 if (HAS_PCH_CPT(dev_priv->dev)) {
1515 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1516 return false;
1517 } else {
1518 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1519 return false;
1520 }
1521 return true;
1522 }
1523
1524 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1525 enum pipe pipe, int reg, u32 port_sel)
1526 {
1527 u32 val = I915_READ(reg);
1528 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1529 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1530 reg, pipe_name(pipe));
1531
1532 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
1533 && (val & DP_PIPEB_SELECT),
1534 "IBX PCH dp port still using transcoder B\n");
1535 }
1536
1537 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1538 enum pipe pipe, int reg)
1539 {
1540 u32 val = I915_READ(reg);
1541 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1542 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1543 reg, pipe_name(pipe));
1544
1545 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
1546 && (val & SDVO_PIPE_B_SELECT),
1547 "IBX PCH hdmi port still using transcoder B\n");
1548 }
1549
1550 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1551 enum pipe pipe)
1552 {
1553 int reg;
1554 u32 val;
1555
1556 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1557 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1558 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1559
1560 reg = PCH_ADPA;
1561 val = I915_READ(reg);
1562 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1563 "PCH VGA enabled on transcoder %c, should be disabled\n",
1564 pipe_name(pipe));
1565
1566 reg = PCH_LVDS;
1567 val = I915_READ(reg);
1568 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1569 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1570 pipe_name(pipe));
1571
1572 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1573 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1574 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
1575 }
1576
1577 static void vlv_enable_pll(struct intel_crtc *crtc,
1578 const struct intel_crtc_state *pipe_config)
1579 {
1580 struct drm_device *dev = crtc->base.dev;
1581 struct drm_i915_private *dev_priv = dev->dev_private;
1582 int reg = DPLL(crtc->pipe);
1583 u32 dpll = pipe_config->dpll_hw_state.dpll;
1584
1585 assert_pipe_disabled(dev_priv, crtc->pipe);
1586
1587 /* No really, not for ILK+ */
1588 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
1589
1590 /* PLL is protected by panel, make sure we can write it */
1591 if (IS_MOBILE(dev_priv->dev))
1592 assert_panel_unlocked(dev_priv, crtc->pipe);
1593
1594 I915_WRITE(reg, dpll);
1595 POSTING_READ(reg);
1596 udelay(150);
1597
1598 if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1599 DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
1600
1601 I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
1602 POSTING_READ(DPLL_MD(crtc->pipe));
1603
1604 /* We do this three times for luck */
1605 I915_WRITE(reg, dpll);
1606 POSTING_READ(reg);
1607 udelay(150); /* wait for warmup */
1608 I915_WRITE(reg, dpll);
1609 POSTING_READ(reg);
1610 udelay(150); /* wait for warmup */
1611 I915_WRITE(reg, dpll);
1612 POSTING_READ(reg);
1613 udelay(150); /* wait for warmup */
1614 }
1615
1616 static void chv_enable_pll(struct intel_crtc *crtc,
1617 const struct intel_crtc_state *pipe_config)
1618 {
1619 struct drm_device *dev = crtc->base.dev;
1620 struct drm_i915_private *dev_priv = dev->dev_private;
1621 int pipe = crtc->pipe;
1622 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1623 u32 tmp;
1624
1625 assert_pipe_disabled(dev_priv, crtc->pipe);
1626
1627 BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
1628
1629 mutex_lock(&dev_priv->sb_lock);
1630
1631 /* Enable back the 10bit clock to display controller */
1632 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1633 tmp |= DPIO_DCLKP_EN;
1634 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1635
1636 mutex_unlock(&dev_priv->sb_lock);
1637
1638 /*
1639 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1640 */
1641 udelay(1);
1642
1643 /* Enable PLL */
1644 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
1645
1646 /* Check PLL is locked */
1647 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1648 DRM_ERROR("PLL %d failed to lock\n", pipe);
1649
1650 /* not sure when this should be written */
1651 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
1652 POSTING_READ(DPLL_MD(pipe));
1653 }
1654
1655 static int intel_num_dvo_pipes(struct drm_device *dev)
1656 {
1657 struct intel_crtc *crtc;
1658 int count = 0;
1659
1660 for_each_intel_crtc(dev, crtc)
1661 count += crtc->base.state->active &&
1662 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1663
1664 return count;
1665 }
1666
1667 static void i9xx_enable_pll(struct intel_crtc *crtc)
1668 {
1669 struct drm_device *dev = crtc->base.dev;
1670 struct drm_i915_private *dev_priv = dev->dev_private;
1671 int reg = DPLL(crtc->pipe);
1672 u32 dpll = crtc->config->dpll_hw_state.dpll;
1673
1674 assert_pipe_disabled(dev_priv, crtc->pipe);
1675
1676 /* No really, not for ILK+ */
1677 BUG_ON(INTEL_INFO(dev)->gen >= 5);
1678
1679 /* PLL is protected by panel, make sure we can write it */
1680 if (IS_MOBILE(dev) && !IS_I830(dev))
1681 assert_panel_unlocked(dev_priv, crtc->pipe);
1682
1683 /* Enable DVO 2x clock on both PLLs if necessary */
1684 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1685 /*
1686 * It appears to be important that we don't enable this
1687 * for the current pipe before otherwise configuring the
1688 * PLL. No idea how this should be handled if multiple
1689 * DVO outputs are enabled simultaneosly.
1690 */
1691 dpll |= DPLL_DVO_2X_MODE;
1692 I915_WRITE(DPLL(!crtc->pipe),
1693 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1694 }
1695
1696 /* Wait for the clocks to stabilize. */
1697 POSTING_READ(reg);
1698 udelay(150);
1699
1700 if (INTEL_INFO(dev)->gen >= 4) {
1701 I915_WRITE(DPLL_MD(crtc->pipe),
1702 crtc->config->dpll_hw_state.dpll_md);
1703 } else {
1704 /* The pixel multiplier can only be updated once the
1705 * DPLL is enabled and the clocks are stable.
1706 *
1707 * So write it again.
1708 */
1709 I915_WRITE(reg, dpll);
1710 }
1711
1712 /* We do this three times for luck */
1713 I915_WRITE(reg, dpll);
1714 POSTING_READ(reg);
1715 udelay(150); /* wait for warmup */
1716 I915_WRITE(reg, dpll);
1717 POSTING_READ(reg);
1718 udelay(150); /* wait for warmup */
1719 I915_WRITE(reg, dpll);
1720 POSTING_READ(reg);
1721 udelay(150); /* wait for warmup */
1722 }
1723
1724 /**
1725 * i9xx_disable_pll - disable a PLL
1726 * @dev_priv: i915 private structure
1727 * @pipe: pipe PLL to disable
1728 *
1729 * Disable the PLL for @pipe, making sure the pipe is off first.
1730 *
1731 * Note! This is for pre-ILK only.
1732 */
1733 static void i9xx_disable_pll(struct intel_crtc *crtc)
1734 {
1735 struct drm_device *dev = crtc->base.dev;
1736 struct drm_i915_private *dev_priv = dev->dev_private;
1737 enum pipe pipe = crtc->pipe;
1738
1739 /* Disable DVO 2x clock on both PLLs if necessary */
1740 if (IS_I830(dev) &&
1741 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1742 !intel_num_dvo_pipes(dev)) {
1743 I915_WRITE(DPLL(PIPE_B),
1744 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1745 I915_WRITE(DPLL(PIPE_A),
1746 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1747 }
1748
1749 /* Don't disable pipe or pipe PLLs if needed */
1750 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1751 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
1752 return;
1753
1754 /* Make sure the pipe isn't still relying on us */
1755 assert_pipe_disabled(dev_priv, pipe);
1756
1757 I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
1758 POSTING_READ(DPLL(pipe));
1759 }
1760
1761 static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1762 {
1763 u32 val;
1764
1765 /* Make sure the pipe isn't still relying on us */
1766 assert_pipe_disabled(dev_priv, pipe);
1767
1768 /*
1769 * Leave integrated clock source and reference clock enabled for pipe B.
1770 * The latter is needed for VGA hotplug / manual detection.
1771 */
1772 val = DPLL_VGA_MODE_DIS;
1773 if (pipe == PIPE_B)
1774 val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REF_CLK_ENABLE_VLV;
1775 I915_WRITE(DPLL(pipe), val);
1776 POSTING_READ(DPLL(pipe));
1777
1778 }
1779
1780 static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1781 {
1782 enum dpio_channel port = vlv_pipe_to_channel(pipe);
1783 u32 val;
1784
1785 /* Make sure the pipe isn't still relying on us */
1786 assert_pipe_disabled(dev_priv, pipe);
1787
1788 /* Set PLL en = 0 */
1789 val = DPLL_SSC_REF_CLK_CHV |
1790 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
1791 if (pipe != PIPE_A)
1792 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1793 I915_WRITE(DPLL(pipe), val);
1794 POSTING_READ(DPLL(pipe));
1795
1796 mutex_lock(&dev_priv->sb_lock);
1797
1798 /* Disable 10bit clock to display controller */
1799 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1800 val &= ~DPIO_DCLKP_EN;
1801 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1802
1803 mutex_unlock(&dev_priv->sb_lock);
1804 }
1805
1806 void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1807 struct intel_digital_port *dport,
1808 unsigned int expected_mask)
1809 {
1810 u32 port_mask;
1811 int dpll_reg;
1812
1813 switch (dport->port) {
1814 case PORT_B:
1815 port_mask = DPLL_PORTB_READY_MASK;
1816 dpll_reg = DPLL(0);
1817 break;
1818 case PORT_C:
1819 port_mask = DPLL_PORTC_READY_MASK;
1820 dpll_reg = DPLL(0);
1821 expected_mask <<= 4;
1822 break;
1823 case PORT_D:
1824 port_mask = DPLL_PORTD_READY_MASK;
1825 dpll_reg = DPIO_PHY_STATUS;
1826 break;
1827 default:
1828 BUG();
1829 }
1830
1831 if (wait_for((I915_READ(dpll_reg) & port_mask) == expected_mask, 1000))
1832 WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
1833 port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
1834 }
1835
1836 static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
1837 {
1838 struct drm_device *dev = crtc->base.dev;
1839 struct drm_i915_private *dev_priv = dev->dev_private;
1840 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1841
1842 if (WARN_ON(pll == NULL))
1843 return;
1844
1845 WARN_ON(!pll->config.crtc_mask);
1846 if (pll->active == 0) {
1847 DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
1848 WARN_ON(pll->on);
1849 assert_shared_dpll_disabled(dev_priv, pll);
1850
1851 pll->mode_set(dev_priv, pll);
1852 }
1853 }
1854
1855 /**
1856 * intel_enable_shared_dpll - enable PCH PLL
1857 * @dev_priv: i915 private structure
1858 * @pipe: pipe PLL to enable
1859 *
1860 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1861 * drives the transcoder clock.
1862 */
1863 static void intel_enable_shared_dpll(struct intel_crtc *crtc)
1864 {
1865 struct drm_device *dev = crtc->base.dev;
1866 struct drm_i915_private *dev_priv = dev->dev_private;
1867 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1868
1869 if (WARN_ON(pll == NULL))
1870 return;
1871
1872 if (WARN_ON(pll->config.crtc_mask == 0))
1873 return;
1874
1875 DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
1876 pll->name, pll->active, pll->on,
1877 crtc->base.base.id);
1878
1879 if (pll->active++) {
1880 WARN_ON(!pll->on);
1881 assert_shared_dpll_enabled(dev_priv, pll);
1882 return;
1883 }
1884 WARN_ON(pll->on);
1885
1886 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
1887
1888 DRM_DEBUG_KMS("enabling %s\n", pll->name);
1889 pll->enable(dev_priv, pll);
1890 pll->on = true;
1891 }
1892
1893 static void intel_disable_shared_dpll(struct intel_crtc *crtc)
1894 {
1895 struct drm_device *dev = crtc->base.dev;
1896 struct drm_i915_private *dev_priv = dev->dev_private;
1897 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1898
1899 /* PCH only available on ILK+ */
1900 if (INTEL_INFO(dev)->gen < 5)
1901 return;
1902
1903 if (pll == NULL)
1904 return;
1905
1906 if (WARN_ON(!(pll->config.crtc_mask & (1 << drm_crtc_index(&crtc->base)))))
1907 return;
1908
1909 DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
1910 pll->name, pll->active, pll->on,
1911 crtc->base.base.id);
1912
1913 if (WARN_ON(pll->active == 0)) {
1914 assert_shared_dpll_disabled(dev_priv, pll);
1915 return;
1916 }
1917
1918 assert_shared_dpll_enabled(dev_priv, pll);
1919 WARN_ON(!pll->on);
1920 if (--pll->active)
1921 return;
1922
1923 DRM_DEBUG_KMS("disabling %s\n", pll->name);
1924 pll->disable(dev_priv, pll);
1925 pll->on = false;
1926
1927 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
1928 }
1929
1930 static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1931 enum pipe pipe)
1932 {
1933 struct drm_device *dev = dev_priv->dev;
1934 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1935 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1936 uint32_t reg, val, pipeconf_val;
1937
1938 /* PCH only available on ILK+ */
1939 BUG_ON(!HAS_PCH_SPLIT(dev));
1940
1941 /* Make sure PCH DPLL is enabled */
1942 assert_shared_dpll_enabled(dev_priv,
1943 intel_crtc_to_shared_dpll(intel_crtc));
1944
1945 /* FDI must be feeding us bits for PCH ports */
1946 assert_fdi_tx_enabled(dev_priv, pipe);
1947 assert_fdi_rx_enabled(dev_priv, pipe);
1948
1949 if (HAS_PCH_CPT(dev)) {
1950 /* Workaround: Set the timing override bit before enabling the
1951 * pch transcoder. */
1952 reg = TRANS_CHICKEN2(pipe);
1953 val = I915_READ(reg);
1954 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1955 I915_WRITE(reg, val);
1956 }
1957
1958 reg = PCH_TRANSCONF(pipe);
1959 val = I915_READ(reg);
1960 pipeconf_val = I915_READ(PIPECONF(pipe));
1961
1962 if (HAS_PCH_IBX(dev_priv->dev)) {
1963 /*
1964 * Make the BPC in transcoder be consistent with
1965 * that in pipeconf reg. For HDMI we must use 8bpc
1966 * here for both 8bpc and 12bpc.
1967 */
1968 val &= ~PIPECONF_BPC_MASK;
1969 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
1970 val |= PIPECONF_8BPC;
1971 else
1972 val |= pipeconf_val & PIPECONF_BPC_MASK;
1973 }
1974
1975 val &= ~TRANS_INTERLACE_MASK;
1976 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1977 if (HAS_PCH_IBX(dev_priv->dev) &&
1978 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
1979 val |= TRANS_LEGACY_INTERLACED_ILK;
1980 else
1981 val |= TRANS_INTERLACED;
1982 else
1983 val |= TRANS_PROGRESSIVE;
1984
1985 I915_WRITE(reg, val | TRANS_ENABLE);
1986 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1987 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
1988 }
1989
1990 static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1991 enum transcoder cpu_transcoder)
1992 {
1993 u32 val, pipeconf_val;
1994
1995 /* PCH only available on ILK+ */
1996 BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
1997
1998 /* FDI must be feeding us bits for PCH ports */
1999 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
2000 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
2001
2002 /* Workaround: set timing override bit. */
2003 val = I915_READ(_TRANSA_CHICKEN2);
2004 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
2005 I915_WRITE(_TRANSA_CHICKEN2, val);
2006
2007 val = TRANS_ENABLE;
2008 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
2009
2010 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
2011 PIPECONF_INTERLACED_ILK)
2012 val |= TRANS_INTERLACED;
2013 else
2014 val |= TRANS_PROGRESSIVE;
2015
2016 I915_WRITE(LPT_TRANSCONF, val);
2017 if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
2018 DRM_ERROR("Failed to enable PCH transcoder\n");
2019 }
2020
2021 static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
2022 enum pipe pipe)
2023 {
2024 struct drm_device *dev = dev_priv->dev;
2025 uint32_t reg, val;
2026
2027 /* FDI relies on the transcoder */
2028 assert_fdi_tx_disabled(dev_priv, pipe);
2029 assert_fdi_rx_disabled(dev_priv, pipe);
2030
2031 /* Ports must be off as well */
2032 assert_pch_ports_disabled(dev_priv, pipe);
2033
2034 reg = PCH_TRANSCONF(pipe);
2035 val = I915_READ(reg);
2036 val &= ~TRANS_ENABLE;
2037 I915_WRITE(reg, val);
2038 /* wait for PCH transcoder off, transcoder state */
2039 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
2040 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
2041
2042 if (!HAS_PCH_IBX(dev)) {
2043 /* Workaround: Clear the timing override chicken bit again. */
2044 reg = TRANS_CHICKEN2(pipe);
2045 val = I915_READ(reg);
2046 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2047 I915_WRITE(reg, val);
2048 }
2049 }
2050
2051 static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
2052 {
2053 u32 val;
2054
2055 val = I915_READ(LPT_TRANSCONF);
2056 val &= ~TRANS_ENABLE;
2057 I915_WRITE(LPT_TRANSCONF, val);
2058 /* wait for PCH transcoder off, transcoder state */
2059 if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
2060 DRM_ERROR("Failed to disable PCH transcoder\n");
2061
2062 /* Workaround: clear timing override bit. */
2063 val = I915_READ(_TRANSA_CHICKEN2);
2064 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2065 I915_WRITE(_TRANSA_CHICKEN2, val);
2066 }
2067
2068 /**
2069 * intel_enable_pipe - enable a pipe, asserting requirements
2070 * @crtc: crtc responsible for the pipe
2071 *
2072 * Enable @crtc's pipe, making sure that various hardware specific requirements
2073 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
2074 */
2075 static void intel_enable_pipe(struct intel_crtc *crtc)
2076 {
2077 struct drm_device *dev = crtc->base.dev;
2078 struct drm_i915_private *dev_priv = dev->dev_private;
2079 enum pipe pipe = crtc->pipe;
2080 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
2081 pipe);
2082 enum pipe pch_transcoder;
2083 int reg;
2084 u32 val;
2085
2086 DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
2087
2088 assert_planes_disabled(dev_priv, pipe);
2089 assert_cursor_disabled(dev_priv, pipe);
2090 assert_sprites_disabled(dev_priv, pipe);
2091
2092 if (HAS_PCH_LPT(dev_priv->dev))
2093 pch_transcoder = TRANSCODER_A;
2094 else
2095 pch_transcoder = pipe;
2096
2097 /*
2098 * A pipe without a PLL won't actually be able to drive bits from
2099 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2100 * need the check.
2101 */
2102 if (HAS_GMCH_DISPLAY(dev_priv->dev))
2103 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
2104 assert_dsi_pll_enabled(dev_priv);
2105 else
2106 assert_pll_enabled(dev_priv, pipe);
2107 else {
2108 if (crtc->config->has_pch_encoder) {
2109 /* if driving the PCH, we need FDI enabled */
2110 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
2111 assert_fdi_tx_pll_enabled(dev_priv,
2112 (enum pipe) cpu_transcoder);
2113 }
2114 /* FIXME: assert CPU port conditions for SNB+ */
2115 }
2116
2117 reg = PIPECONF(cpu_transcoder);
2118 val = I915_READ(reg);
2119 if (val & PIPECONF_ENABLE) {
2120 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2121 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
2122 return;
2123 }
2124
2125 I915_WRITE(reg, val | PIPECONF_ENABLE);
2126 POSTING_READ(reg);
2127 }
2128
2129 /**
2130 * intel_disable_pipe - disable a pipe, asserting requirements
2131 * @crtc: crtc whose pipes is to be disabled
2132 *
2133 * Disable the pipe of @crtc, making sure that various hardware
2134 * specific requirements are met, if applicable, e.g. plane
2135 * disabled, panel fitter off, etc.
2136 *
2137 * Will wait until the pipe has shut down before returning.
2138 */
2139 static void intel_disable_pipe(struct intel_crtc *crtc)
2140 {
2141 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
2142 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
2143 enum pipe pipe = crtc->pipe;
2144 int reg;
2145 u32 val;
2146
2147 DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
2148
2149 /*
2150 * Make sure planes won't keep trying to pump pixels to us,
2151 * or we might hang the display.
2152 */
2153 assert_planes_disabled(dev_priv, pipe);
2154 assert_cursor_disabled(dev_priv, pipe);
2155 assert_sprites_disabled(dev_priv, pipe);
2156
2157 reg = PIPECONF(cpu_transcoder);
2158 val = I915_READ(reg);
2159 if ((val & PIPECONF_ENABLE) == 0)
2160 return;
2161
2162 /*
2163 * Double wide has implications for planes
2164 * so best keep it disabled when not needed.
2165 */
2166 if (crtc->config->double_wide)
2167 val &= ~PIPECONF_DOUBLE_WIDE;
2168
2169 /* Don't disable pipe or pipe PLLs if needed */
2170 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2171 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
2172 val &= ~PIPECONF_ENABLE;
2173
2174 I915_WRITE(reg, val);
2175 if ((val & PIPECONF_ENABLE) == 0)
2176 intel_wait_for_pipe_off(crtc);
2177 }
2178
2179 static bool need_vtd_wa(struct drm_device *dev)
2180 {
2181 #ifdef CONFIG_INTEL_IOMMU
2182 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2183 return true;
2184 #endif
2185 return false;
2186 }
2187
2188 unsigned int
2189 intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
2190 uint64_t fb_format_modifier)
2191 {
2192 unsigned int tile_height;
2193 uint32_t pixel_bytes;
2194
2195 switch (fb_format_modifier) {
2196 case DRM_FORMAT_MOD_NONE:
2197 tile_height = 1;
2198 break;
2199 case I915_FORMAT_MOD_X_TILED:
2200 tile_height = IS_GEN2(dev) ? 16 : 8;
2201 break;
2202 case I915_FORMAT_MOD_Y_TILED:
2203 tile_height = 32;
2204 break;
2205 case I915_FORMAT_MOD_Yf_TILED:
2206 pixel_bytes = drm_format_plane_cpp(pixel_format, 0);
2207 switch (pixel_bytes) {
2208 default:
2209 case 1:
2210 tile_height = 64;
2211 break;
2212 case 2:
2213 case 4:
2214 tile_height = 32;
2215 break;
2216 case 8:
2217 tile_height = 16;
2218 break;
2219 case 16:
2220 WARN_ONCE(1,
2221 "128-bit pixels are not supported for display!");
2222 tile_height = 16;
2223 break;
2224 }
2225 break;
2226 default:
2227 MISSING_CASE(fb_format_modifier);
2228 tile_height = 1;
2229 break;
2230 }
2231
2232 return tile_height;
2233 }
2234
2235 unsigned int
2236 intel_fb_align_height(struct drm_device *dev, unsigned int height,
2237 uint32_t pixel_format, uint64_t fb_format_modifier)
2238 {
2239 return ALIGN(height, intel_tile_height(dev, pixel_format,
2240 fb_format_modifier));
2241 }
2242
2243 static int
2244 intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
2245 const struct drm_plane_state *plane_state)
2246 {
2247 struct intel_rotation_info *info = &view->rotation_info;
2248 unsigned int tile_height, tile_pitch;
2249
2250 *view = i915_ggtt_view_normal;
2251
2252 if (!plane_state)
2253 return 0;
2254
2255 if (!intel_rotation_90_or_270(plane_state->rotation))
2256 return 0;
2257
2258 *view = i915_ggtt_view_rotated;
2259
2260 info->height = fb->height;
2261 info->pixel_format = fb->pixel_format;
2262 info->pitch = fb->pitches[0];
2263 info->fb_modifier = fb->modifier[0];
2264
2265 tile_height = intel_tile_height(fb->dev, fb->pixel_format,
2266 fb->modifier[0]);
2267 tile_pitch = PAGE_SIZE / tile_height;
2268 info->width_pages = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
2269 info->height_pages = DIV_ROUND_UP(fb->height, tile_height);
2270 info->size = info->width_pages * info->height_pages * PAGE_SIZE;
2271
2272 return 0;
2273 }
2274
2275 static unsigned int intel_linear_alignment(struct drm_i915_private *dev_priv)
2276 {
2277 if (INTEL_INFO(dev_priv)->gen >= 9)
2278 return 256 * 1024;
2279 else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
2280 IS_VALLEYVIEW(dev_priv))
2281 return 128 * 1024;
2282 else if (INTEL_INFO(dev_priv)->gen >= 4)
2283 return 4 * 1024;
2284 else
2285 return 0;
2286 }
2287
2288 int
2289 intel_pin_and_fence_fb_obj(struct drm_plane *plane,
2290 struct drm_framebuffer *fb,
2291 const struct drm_plane_state *plane_state,
2292 struct intel_engine_cs *pipelined,
2293 struct drm_i915_gem_request **pipelined_request)
2294 {
2295 struct drm_device *dev = fb->dev;
2296 struct drm_i915_private *dev_priv = dev->dev_private;
2297 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2298 struct i915_ggtt_view view;
2299 u32 alignment;
2300 int ret;
2301
2302 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2303
2304 switch (fb->modifier[0]) {
2305 case DRM_FORMAT_MOD_NONE:
2306 alignment = intel_linear_alignment(dev_priv);
2307 break;
2308 case I915_FORMAT_MOD_X_TILED:
2309 if (INTEL_INFO(dev)->gen >= 9)
2310 alignment = 256 * 1024;
2311 else {
2312 /* pin() will align the object as required by fence */
2313 alignment = 0;
2314 }
2315 break;
2316 case I915_FORMAT_MOD_Y_TILED:
2317 case I915_FORMAT_MOD_Yf_TILED:
2318 if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
2319 "Y tiling bo slipped through, driver bug!\n"))
2320 return -EINVAL;
2321 alignment = 1 * 1024 * 1024;
2322 break;
2323 default:
2324 MISSING_CASE(fb->modifier[0]);
2325 return -EINVAL;
2326 }
2327
2328 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2329 if (ret)
2330 return ret;
2331
2332 /* Note that the w/a also requires 64 PTE of padding following the
2333 * bo. We currently fill all unused PTE with the shadow page and so
2334 * we should always have valid PTE following the scanout preventing
2335 * the VT-d warning.
2336 */
2337 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2338 alignment = 256 * 1024;
2339
2340 /*
2341 * Global gtt pte registers are special registers which actually forward
2342 * writes to a chunk of system memory. Which means that there is no risk
2343 * that the register values disappear as soon as we call
2344 * intel_runtime_pm_put(), so it is correct to wrap only the
2345 * pin/unpin/fence and not more.
2346 */
2347 intel_runtime_pm_get(dev_priv);
2348
2349 dev_priv->mm.interruptible = false;
2350 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
2351 pipelined_request, &view);
2352 if (ret)
2353 goto err_interruptible;
2354
2355 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2356 * fence, whereas 965+ only requires a fence if using
2357 * framebuffer compression. For simplicity, we always install
2358 * a fence as the cost is not that onerous.
2359 */
2360 ret = i915_gem_object_get_fence(obj);
2361 if (ret == -EDEADLK) {
2362 /*
2363 * -EDEADLK means there are no free fences
2364 * no pending flips.
2365 *
2366 * This is propagated to atomic, but it uses
2367 * -EDEADLK to force a locking recovery, so
2368 * change the returned error to -EBUSY.
2369 */
2370 ret = -EBUSY;
2371 goto err_unpin;
2372 } else if (ret)
2373 goto err_unpin;
2374
2375 i915_gem_object_pin_fence(obj);
2376
2377 dev_priv->mm.interruptible = true;
2378 intel_runtime_pm_put(dev_priv);
2379 return 0;
2380
2381 err_unpin:
2382 i915_gem_object_unpin_from_display_plane(obj, &view);
2383 err_interruptible:
2384 dev_priv->mm.interruptible = true;
2385 intel_runtime_pm_put(dev_priv);
2386 return ret;
2387 }
2388
2389 static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
2390 const struct drm_plane_state *plane_state)
2391 {
2392 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
2393 struct i915_ggtt_view view;
2394 int ret;
2395
2396 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2397
2398 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2399 WARN_ONCE(ret, "Couldn't get view from plane state!");
2400
2401 i915_gem_object_unpin_fence(obj);
2402 i915_gem_object_unpin_from_display_plane(obj, &view);
2403 }
2404
2405 /* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
2406 * is assumed to be a power-of-two. */
2407 unsigned long intel_gen4_compute_page_offset(struct drm_i915_private *dev_priv,
2408 int *x, int *y,
2409 unsigned int tiling_mode,
2410 unsigned int cpp,
2411 unsigned int pitch)
2412 {
2413 if (tiling_mode != I915_TILING_NONE) {
2414 unsigned int tile_rows, tiles;
2415
2416 tile_rows = *y / 8;
2417 *y %= 8;
2418
2419 tiles = *x / (512/cpp);
2420 *x %= 512/cpp;
2421
2422 return tile_rows * pitch * 8 + tiles * 4096;
2423 } else {
2424 unsigned int alignment = intel_linear_alignment(dev_priv) - 1;
2425 unsigned int offset;
2426
2427 offset = *y * pitch + *x * cpp;
2428 *y = (offset & alignment) / pitch;
2429 *x = ((offset & alignment) - *y * pitch) / cpp;
2430 return offset & ~alignment;
2431 }
2432 }
2433
2434 static int i9xx_format_to_fourcc(int format)
2435 {
2436 switch (format) {
2437 case DISPPLANE_8BPP:
2438 return DRM_FORMAT_C8;
2439 case DISPPLANE_BGRX555:
2440 return DRM_FORMAT_XRGB1555;
2441 case DISPPLANE_BGRX565:
2442 return DRM_FORMAT_RGB565;
2443 default:
2444 case DISPPLANE_BGRX888:
2445 return DRM_FORMAT_XRGB8888;
2446 case DISPPLANE_RGBX888:
2447 return DRM_FORMAT_XBGR8888;
2448 case DISPPLANE_BGRX101010:
2449 return DRM_FORMAT_XRGB2101010;
2450 case DISPPLANE_RGBX101010:
2451 return DRM_FORMAT_XBGR2101010;
2452 }
2453 }
2454
2455 static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2456 {
2457 switch (format) {
2458 case PLANE_CTL_FORMAT_RGB_565:
2459 return DRM_FORMAT_RGB565;
2460 default:
2461 case PLANE_CTL_FORMAT_XRGB_8888:
2462 if (rgb_order) {
2463 if (alpha)
2464 return DRM_FORMAT_ABGR8888;
2465 else
2466 return DRM_FORMAT_XBGR8888;
2467 } else {
2468 if (alpha)
2469 return DRM_FORMAT_ARGB8888;
2470 else
2471 return DRM_FORMAT_XRGB8888;
2472 }
2473 case PLANE_CTL_FORMAT_XRGB_2101010:
2474 if (rgb_order)
2475 return DRM_FORMAT_XBGR2101010;
2476 else
2477 return DRM_FORMAT_XRGB2101010;
2478 }
2479 }
2480
2481 static bool
2482 intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2483 struct intel_initial_plane_config *plane_config)
2484 {
2485 struct drm_device *dev = crtc->base.dev;
2486 struct drm_i915_gem_object *obj = NULL;
2487 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2488 struct drm_framebuffer *fb = &plane_config->fb->base;
2489 u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2490 u32 size_aligned = round_up(plane_config->base + plane_config->size,
2491 PAGE_SIZE);
2492
2493 size_aligned -= base_aligned;
2494
2495 if (plane_config->size == 0)
2496 return false;
2497
2498 obj = i915_gem_object_create_stolen_for_preallocated(dev,
2499 base_aligned,
2500 base_aligned,
2501 size_aligned);
2502 if (!obj)
2503 return false;
2504
2505 obj->tiling_mode = plane_config->tiling;
2506 if (obj->tiling_mode == I915_TILING_X)
2507 obj->stride = fb->pitches[0];
2508
2509 mode_cmd.pixel_format = fb->pixel_format;
2510 mode_cmd.width = fb->width;
2511 mode_cmd.height = fb->height;
2512 mode_cmd.pitches[0] = fb->pitches[0];
2513 mode_cmd.modifier[0] = fb->modifier[0];
2514 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
2515
2516 mutex_lock(&dev->struct_mutex);
2517 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
2518 &mode_cmd, obj)) {
2519 DRM_DEBUG_KMS("intel fb init failed\n");
2520 goto out_unref_obj;
2521 }
2522 mutex_unlock(&dev->struct_mutex);
2523
2524 DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
2525 return true;
2526
2527 out_unref_obj:
2528 drm_gem_object_unreference(&obj->base);
2529 mutex_unlock(&dev->struct_mutex);
2530 return false;
2531 }
2532
2533 /* Update plane->state->fb to match plane->fb after driver-internal updates */
2534 static void
2535 update_state_fb(struct drm_plane *plane)
2536 {
2537 if (plane->fb == plane->state->fb)
2538 return;
2539
2540 if (plane->state->fb)
2541 drm_framebuffer_unreference(plane->state->fb);
2542 plane->state->fb = plane->fb;
2543 if (plane->state->fb)
2544 drm_framebuffer_reference(plane->state->fb);
2545 }
2546
2547 static void
2548 intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2549 struct intel_initial_plane_config *plane_config)
2550 {
2551 struct drm_device *dev = intel_crtc->base.dev;
2552 struct drm_i915_private *dev_priv = dev->dev_private;
2553 struct drm_crtc *c;
2554 struct intel_crtc *i;
2555 struct drm_i915_gem_object *obj;
2556 struct drm_plane *primary = intel_crtc->base.primary;
2557 struct drm_plane_state *plane_state = primary->state;
2558 struct drm_framebuffer *fb;
2559
2560 if (!plane_config->fb)
2561 return;
2562
2563 if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
2564 fb = &plane_config->fb->base;
2565 goto valid_fb;
2566 }
2567
2568 kfree(plane_config->fb);
2569
2570 /*
2571 * Failed to alloc the obj, check to see if we should share
2572 * an fb with another CRTC instead
2573 */
2574 for_each_crtc(dev, c) {
2575 i = to_intel_crtc(c);
2576
2577 if (c == &intel_crtc->base)
2578 continue;
2579
2580 if (!i->active)
2581 continue;
2582
2583 fb = c->primary->fb;
2584 if (!fb)
2585 continue;
2586
2587 obj = intel_fb_obj(fb);
2588 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
2589 drm_framebuffer_reference(fb);
2590 goto valid_fb;
2591 }
2592 }
2593
2594 return;
2595
2596 valid_fb:
2597 plane_state->src_x = plane_state->src_y = 0;
2598 plane_state->src_w = fb->width << 16;
2599 plane_state->src_h = fb->height << 16;
2600
2601 plane_state->crtc_x = plane_state->src_y = 0;
2602 plane_state->crtc_w = fb->width;
2603 plane_state->crtc_h = fb->height;
2604
2605 obj = intel_fb_obj(fb);
2606 if (obj->tiling_mode != I915_TILING_NONE)
2607 dev_priv->preserve_bios_swizzle = true;
2608
2609 drm_framebuffer_reference(fb);
2610 primary->fb = primary->state->fb = fb;
2611 primary->crtc = primary->state->crtc = &intel_crtc->base;
2612 intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
2613 obj->frontbuffer_bits |= to_intel_plane(primary)->frontbuffer_bit;
2614 }
2615
2616 static void i9xx_update_primary_plane(struct drm_crtc *crtc,
2617 struct drm_framebuffer *fb,
2618 int x, int y)
2619 {
2620 struct drm_device *dev = crtc->dev;
2621 struct drm_i915_private *dev_priv = dev->dev_private;
2622 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2623 struct drm_plane *primary = crtc->primary;
2624 bool visible = to_intel_plane_state(primary->state)->visible;
2625 struct drm_i915_gem_object *obj;
2626 int plane = intel_crtc->plane;
2627 unsigned long linear_offset;
2628 u32 dspcntr;
2629 u32 reg = DSPCNTR(plane);
2630 int pixel_size;
2631
2632 if (!visible || !fb) {
2633 I915_WRITE(reg, 0);
2634 if (INTEL_INFO(dev)->gen >= 4)
2635 I915_WRITE(DSPSURF(plane), 0);
2636 else
2637 I915_WRITE(DSPADDR(plane), 0);
2638 POSTING_READ(reg);
2639 return;
2640 }
2641
2642 obj = intel_fb_obj(fb);
2643 if (WARN_ON(obj == NULL))
2644 return;
2645
2646 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2647
2648 dspcntr = DISPPLANE_GAMMA_ENABLE;
2649
2650 dspcntr |= DISPLAY_PLANE_ENABLE;
2651
2652 if (INTEL_INFO(dev)->gen < 4) {
2653 if (intel_crtc->pipe == PIPE_B)
2654 dspcntr |= DISPPLANE_SEL_PIPE_B;
2655
2656 /* pipesrc and dspsize control the size that is scaled from,
2657 * which should always be the user's requested size.
2658 */
2659 I915_WRITE(DSPSIZE(plane),
2660 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2661 (intel_crtc->config->pipe_src_w - 1));
2662 I915_WRITE(DSPPOS(plane), 0);
2663 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2664 I915_WRITE(PRIMSIZE(plane),
2665 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2666 (intel_crtc->config->pipe_src_w - 1));
2667 I915_WRITE(PRIMPOS(plane), 0);
2668 I915_WRITE(PRIMCNSTALPHA(plane), 0);
2669 }
2670
2671 switch (fb->pixel_format) {
2672 case DRM_FORMAT_C8:
2673 dspcntr |= DISPPLANE_8BPP;
2674 break;
2675 case DRM_FORMAT_XRGB1555:
2676 dspcntr |= DISPPLANE_BGRX555;
2677 break;
2678 case DRM_FORMAT_RGB565:
2679 dspcntr |= DISPPLANE_BGRX565;
2680 break;
2681 case DRM_FORMAT_XRGB8888:
2682 dspcntr |= DISPPLANE_BGRX888;
2683 break;
2684 case DRM_FORMAT_XBGR8888:
2685 dspcntr |= DISPPLANE_RGBX888;
2686 break;
2687 case DRM_FORMAT_XRGB2101010:
2688 dspcntr |= DISPPLANE_BGRX101010;
2689 break;
2690 case DRM_FORMAT_XBGR2101010:
2691 dspcntr |= DISPPLANE_RGBX101010;
2692 break;
2693 default:
2694 BUG();
2695 }
2696
2697 if (INTEL_INFO(dev)->gen >= 4 &&
2698 obj->tiling_mode != I915_TILING_NONE)
2699 dspcntr |= DISPPLANE_TILED;
2700
2701 if (IS_G4X(dev))
2702 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2703
2704 linear_offset = y * fb->pitches[0] + x * pixel_size;
2705
2706 if (INTEL_INFO(dev)->gen >= 4) {
2707 intel_crtc->dspaddr_offset =
2708 intel_gen4_compute_page_offset(dev_priv,
2709 &x, &y, obj->tiling_mode,
2710 pixel_size,
2711 fb->pitches[0]);
2712 linear_offset -= intel_crtc->dspaddr_offset;
2713 } else {
2714 intel_crtc->dspaddr_offset = linear_offset;
2715 }
2716
2717 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2718 dspcntr |= DISPPLANE_ROTATE_180;
2719
2720 x += (intel_crtc->config->pipe_src_w - 1);
2721 y += (intel_crtc->config->pipe_src_h - 1);
2722
2723 /* Finding the last pixel of the last line of the display
2724 data and adding to linear_offset*/
2725 linear_offset +=
2726 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2727 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2728 }
2729
2730 I915_WRITE(reg, dspcntr);
2731
2732 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2733 if (INTEL_INFO(dev)->gen >= 4) {
2734 I915_WRITE(DSPSURF(plane),
2735 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2736 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2737 I915_WRITE(DSPLINOFF(plane), linear_offset);
2738 } else
2739 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
2740 POSTING_READ(reg);
2741 }
2742
2743 static void ironlake_update_primary_plane(struct drm_crtc *crtc,
2744 struct drm_framebuffer *fb,
2745 int x, int y)
2746 {
2747 struct drm_device *dev = crtc->dev;
2748 struct drm_i915_private *dev_priv = dev->dev_private;
2749 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2750 struct drm_plane *primary = crtc->primary;
2751 bool visible = to_intel_plane_state(primary->state)->visible;
2752 struct drm_i915_gem_object *obj;
2753 int plane = intel_crtc->plane;
2754 unsigned long linear_offset;
2755 u32 dspcntr;
2756 u32 reg = DSPCNTR(plane);
2757 int pixel_size;
2758
2759 if (!visible || !fb) {
2760 I915_WRITE(reg, 0);
2761 I915_WRITE(DSPSURF(plane), 0);
2762 POSTING_READ(reg);
2763 return;
2764 }
2765
2766 obj = intel_fb_obj(fb);
2767 if (WARN_ON(obj == NULL))
2768 return;
2769
2770 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2771
2772 dspcntr = DISPPLANE_GAMMA_ENABLE;
2773
2774 dspcntr |= DISPLAY_PLANE_ENABLE;
2775
2776 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2777 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
2778
2779 switch (fb->pixel_format) {
2780 case DRM_FORMAT_C8:
2781 dspcntr |= DISPPLANE_8BPP;
2782 break;
2783 case DRM_FORMAT_RGB565:
2784 dspcntr |= DISPPLANE_BGRX565;
2785 break;
2786 case DRM_FORMAT_XRGB8888:
2787 dspcntr |= DISPPLANE_BGRX888;
2788 break;
2789 case DRM_FORMAT_XBGR8888:
2790 dspcntr |= DISPPLANE_RGBX888;
2791 break;
2792 case DRM_FORMAT_XRGB2101010:
2793 dspcntr |= DISPPLANE_BGRX101010;
2794 break;
2795 case DRM_FORMAT_XBGR2101010:
2796 dspcntr |= DISPPLANE_RGBX101010;
2797 break;
2798 default:
2799 BUG();
2800 }
2801
2802 if (obj->tiling_mode != I915_TILING_NONE)
2803 dspcntr |= DISPPLANE_TILED;
2804
2805 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
2806 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2807
2808 linear_offset = y * fb->pitches[0] + x * pixel_size;
2809 intel_crtc->dspaddr_offset =
2810 intel_gen4_compute_page_offset(dev_priv,
2811 &x, &y, obj->tiling_mode,
2812 pixel_size,
2813 fb->pitches[0]);
2814 linear_offset -= intel_crtc->dspaddr_offset;
2815 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
2816 dspcntr |= DISPPLANE_ROTATE_180;
2817
2818 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
2819 x += (intel_crtc->config->pipe_src_w - 1);
2820 y += (intel_crtc->config->pipe_src_h - 1);
2821
2822 /* Finding the last pixel of the last line of the display
2823 data and adding to linear_offset*/
2824 linear_offset +=
2825 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2826 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
2827 }
2828 }
2829
2830 I915_WRITE(reg, dspcntr);
2831
2832 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
2833 I915_WRITE(DSPSURF(plane),
2834 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
2835 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
2836 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2837 } else {
2838 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2839 I915_WRITE(DSPLINOFF(plane), linear_offset);
2840 }
2841 POSTING_READ(reg);
2842 }
2843
2844 u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
2845 uint32_t pixel_format)
2846 {
2847 u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2848
2849 /*
2850 * The stride is either expressed as a multiple of 64 bytes
2851 * chunks for linear buffers or in number of tiles for tiled
2852 * buffers.
2853 */
2854 switch (fb_modifier) {
2855 case DRM_FORMAT_MOD_NONE:
2856 return 64;
2857 case I915_FORMAT_MOD_X_TILED:
2858 if (INTEL_INFO(dev)->gen == 2)
2859 return 128;
2860 return 512;
2861 case I915_FORMAT_MOD_Y_TILED:
2862 /* No need to check for old gens and Y tiling since this is
2863 * about the display engine and those will be blocked before
2864 * we get here.
2865 */
2866 return 128;
2867 case I915_FORMAT_MOD_Yf_TILED:
2868 if (bits_per_pixel == 8)
2869 return 64;
2870 else
2871 return 128;
2872 default:
2873 MISSING_CASE(fb_modifier);
2874 return 64;
2875 }
2876 }
2877
2878 unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
2879 struct drm_i915_gem_object *obj)
2880 {
2881 const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
2882
2883 if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
2884 view = &i915_ggtt_view_rotated;
2885
2886 return i915_gem_obj_ggtt_offset_view(obj, view);
2887 }
2888
2889 static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
2890 {
2891 struct drm_device *dev = intel_crtc->base.dev;
2892 struct drm_i915_private *dev_priv = dev->dev_private;
2893
2894 I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
2895 I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
2896 I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
2897 }
2898
2899 /*
2900 * This function detaches (aka. unbinds) unused scalers in hardware
2901 */
2902 static void skl_detach_scalers(struct intel_crtc *intel_crtc)
2903 {
2904 struct intel_crtc_scaler_state *scaler_state;
2905 int i;
2906
2907 scaler_state = &intel_crtc->config->scaler_state;
2908
2909 /* loop through and disable scalers that aren't in use */
2910 for (i = 0; i < intel_crtc->num_scalers; i++) {
2911 if (!scaler_state->scalers[i].in_use)
2912 skl_detach_scaler(intel_crtc, i);
2913 }
2914 }
2915
2916 u32 skl_plane_ctl_format(uint32_t pixel_format)
2917 {
2918 switch (pixel_format) {
2919 case DRM_FORMAT_C8:
2920 return PLANE_CTL_FORMAT_INDEXED;
2921 case DRM_FORMAT_RGB565:
2922 return PLANE_CTL_FORMAT_RGB_565;
2923 case DRM_FORMAT_XBGR8888:
2924 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
2925 case DRM_FORMAT_XRGB8888:
2926 return PLANE_CTL_FORMAT_XRGB_8888;
2927 /*
2928 * XXX: For ARBG/ABGR formats we default to expecting scanout buffers
2929 * to be already pre-multiplied. We need to add a knob (or a different
2930 * DRM_FORMAT) for user-space to configure that.
2931 */
2932 case DRM_FORMAT_ABGR8888:
2933 return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
2934 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2935 case DRM_FORMAT_ARGB8888:
2936 return PLANE_CTL_FORMAT_XRGB_8888 |
2937 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2938 case DRM_FORMAT_XRGB2101010:
2939 return PLANE_CTL_FORMAT_XRGB_2101010;
2940 case DRM_FORMAT_XBGR2101010:
2941 return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
2942 case DRM_FORMAT_YUYV:
2943 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
2944 case DRM_FORMAT_YVYU:
2945 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
2946 case DRM_FORMAT_UYVY:
2947 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
2948 case DRM_FORMAT_VYUY:
2949 return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
2950 default:
2951 MISSING_CASE(pixel_format);
2952 }
2953
2954 return 0;
2955 }
2956
2957 u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
2958 {
2959 switch (fb_modifier) {
2960 case DRM_FORMAT_MOD_NONE:
2961 break;
2962 case I915_FORMAT_MOD_X_TILED:
2963 return PLANE_CTL_TILED_X;
2964 case I915_FORMAT_MOD_Y_TILED:
2965 return PLANE_CTL_TILED_Y;
2966 case I915_FORMAT_MOD_Yf_TILED:
2967 return PLANE_CTL_TILED_YF;
2968 default:
2969 MISSING_CASE(fb_modifier);
2970 }
2971
2972 return 0;
2973 }
2974
2975 u32 skl_plane_ctl_rotation(unsigned int rotation)
2976 {
2977 switch (rotation) {
2978 case BIT(DRM_ROTATE_0):
2979 break;
2980 /*
2981 * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
2982 * while i915 HW rotation is clockwise, thats why this swapping.
2983 */
2984 case BIT(DRM_ROTATE_90):
2985 return PLANE_CTL_ROTATE_270;
2986 case BIT(DRM_ROTATE_180):
2987 return PLANE_CTL_ROTATE_180;
2988 case BIT(DRM_ROTATE_270):
2989 return PLANE_CTL_ROTATE_90;
2990 default:
2991 MISSING_CASE(rotation);
2992 }
2993
2994 return 0;
2995 }
2996
2997 static void skylake_update_primary_plane(struct drm_crtc *crtc,
2998 struct drm_framebuffer *fb,
2999 int x, int y)
3000 {
3001 struct drm_device *dev = crtc->dev;
3002 struct drm_i915_private *dev_priv = dev->dev_private;
3003 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3004 struct drm_plane *plane = crtc->primary;
3005 bool visible = to_intel_plane_state(plane->state)->visible;
3006 struct drm_i915_gem_object *obj;
3007 int pipe = intel_crtc->pipe;
3008 u32 plane_ctl, stride_div, stride;
3009 u32 tile_height, plane_offset, plane_size;
3010 unsigned int rotation;
3011 int x_offset, y_offset;
3012 unsigned long surf_addr;
3013 struct intel_crtc_state *crtc_state = intel_crtc->config;
3014 struct intel_plane_state *plane_state;
3015 int src_x = 0, src_y = 0, src_w = 0, src_h = 0;
3016 int dst_x = 0, dst_y = 0, dst_w = 0, dst_h = 0;
3017 int scaler_id = -1;
3018
3019 plane_state = to_intel_plane_state(plane->state);
3020
3021 if (!visible || !fb) {
3022 I915_WRITE(PLANE_CTL(pipe, 0), 0);
3023 I915_WRITE(PLANE_SURF(pipe, 0), 0);
3024 POSTING_READ(PLANE_CTL(pipe, 0));
3025 return;
3026 }
3027
3028 plane_ctl = PLANE_CTL_ENABLE |
3029 PLANE_CTL_PIPE_GAMMA_ENABLE |
3030 PLANE_CTL_PIPE_CSC_ENABLE;
3031
3032 plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
3033 plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
3034 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3035
3036 rotation = plane->state->rotation;
3037 plane_ctl |= skl_plane_ctl_rotation(rotation);
3038
3039 obj = intel_fb_obj(fb);
3040 stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
3041 fb->pixel_format);
3042 surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj);
3043
3044 /*
3045 * FIXME: intel_plane_state->src, dst aren't set when transitional
3046 * update_plane helpers are called from legacy paths.
3047 * Once full atomic crtc is available, below check can be avoided.
3048 */
3049 if (drm_rect_width(&plane_state->src)) {
3050 scaler_id = plane_state->scaler_id;
3051 src_x = plane_state->src.x1 >> 16;
3052 src_y = plane_state->src.y1 >> 16;
3053 src_w = drm_rect_width(&plane_state->src) >> 16;
3054 src_h = drm_rect_height(&plane_state->src) >> 16;
3055 dst_x = plane_state->dst.x1;
3056 dst_y = plane_state->dst.y1;
3057 dst_w = drm_rect_width(&plane_state->dst);
3058 dst_h = drm_rect_height(&plane_state->dst);
3059
3060 WARN_ON(x != src_x || y != src_y);
3061 } else {
3062 src_w = intel_crtc->config->pipe_src_w;
3063 src_h = intel_crtc->config->pipe_src_h;
3064 }
3065
3066 if (intel_rotation_90_or_270(rotation)) {
3067 /* stride = Surface height in tiles */
3068 tile_height = intel_tile_height(dev, fb->pixel_format,
3069 fb->modifier[0]);
3070 stride = DIV_ROUND_UP(fb->height, tile_height);
3071 x_offset = stride * tile_height - y - src_h;
3072 y_offset = x;
3073 plane_size = (src_w - 1) << 16 | (src_h - 1);
3074 } else {
3075 stride = fb->pitches[0] / stride_div;
3076 x_offset = x;
3077 y_offset = y;
3078 plane_size = (src_h - 1) << 16 | (src_w - 1);
3079 }
3080 plane_offset = y_offset << 16 | x_offset;
3081
3082 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
3083 I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
3084 I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
3085 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
3086
3087 if (scaler_id >= 0) {
3088 uint32_t ps_ctrl = 0;
3089
3090 WARN_ON(!dst_w || !dst_h);
3091 ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
3092 crtc_state->scaler_state.scalers[scaler_id].mode;
3093 I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
3094 I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
3095 I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
3096 I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
3097 I915_WRITE(PLANE_POS(pipe, 0), 0);
3098 } else {
3099 I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
3100 }
3101
3102 I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
3103
3104 POSTING_READ(PLANE_SURF(pipe, 0));
3105 }
3106
3107 /* Assume fb object is pinned & idle & fenced and just update base pointers */
3108 static int
3109 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
3110 int x, int y, enum mode_set_atomic state)
3111 {
3112 struct drm_device *dev = crtc->dev;
3113 struct drm_i915_private *dev_priv = dev->dev_private;
3114
3115 if (dev_priv->fbc.disable_fbc)
3116 dev_priv->fbc.disable_fbc(dev_priv);
3117
3118 dev_priv->display.update_primary_plane(crtc, fb, x, y);
3119
3120 return 0;
3121 }
3122
3123 static void intel_complete_page_flips(struct drm_device *dev)
3124 {
3125 struct drm_crtc *crtc;
3126
3127 for_each_crtc(dev, crtc) {
3128 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3129 enum plane plane = intel_crtc->plane;
3130
3131 intel_prepare_page_flip(dev, plane);
3132 intel_finish_page_flip_plane(dev, plane);
3133 }
3134 }
3135
3136 static void intel_update_primary_planes(struct drm_device *dev)
3137 {
3138 struct drm_i915_private *dev_priv = dev->dev_private;
3139 struct drm_crtc *crtc;
3140
3141 for_each_crtc(dev, crtc) {
3142 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3143
3144 drm_modeset_lock(&crtc->mutex, NULL);
3145 /*
3146 * FIXME: Once we have proper support for primary planes (and
3147 * disabling them without disabling the entire crtc) allow again
3148 * a NULL crtc->primary->fb.
3149 */
3150 if (intel_crtc->active && crtc->primary->fb)
3151 dev_priv->display.update_primary_plane(crtc,
3152 crtc->primary->fb,
3153 crtc->x,
3154 crtc->y);
3155 drm_modeset_unlock(&crtc->mutex);
3156 }
3157 }
3158
3159 void intel_prepare_reset(struct drm_device *dev)
3160 {
3161 /* no reset support for gen2 */
3162 if (IS_GEN2(dev))
3163 return;
3164
3165 /* reset doesn't touch the display */
3166 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
3167 return;
3168
3169 drm_modeset_lock_all(dev);
3170 /*
3171 * Disabling the crtcs gracefully seems nicer. Also the
3172 * g33 docs say we should at least disable all the planes.
3173 */
3174 intel_display_suspend(dev);
3175 }
3176
3177 void intel_finish_reset(struct drm_device *dev)
3178 {
3179 struct drm_i915_private *dev_priv = to_i915(dev);
3180
3181 /*
3182 * Flips in the rings will be nuked by the reset,
3183 * so complete all pending flips so that user space
3184 * will get its events and not get stuck.
3185 */
3186 intel_complete_page_flips(dev);
3187
3188 /* no reset support for gen2 */
3189 if (IS_GEN2(dev))
3190 return;
3191
3192 /* reset doesn't touch the display */
3193 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
3194 /*
3195 * Flips in the rings have been nuked by the reset,
3196 * so update the base address of all primary
3197 * planes to the the last fb to make sure we're
3198 * showing the correct fb after a reset.
3199 */
3200 intel_update_primary_planes(dev);
3201 return;
3202 }
3203
3204 /*
3205 * The display has been reset as well,
3206 * so need a full re-initialization.
3207 */
3208 intel_runtime_pm_disable_interrupts(dev_priv);
3209 intel_runtime_pm_enable_interrupts(dev_priv);
3210
3211 intel_modeset_init_hw(dev);
3212
3213 spin_lock_irq(&dev_priv->irq_lock);
3214 if (dev_priv->display.hpd_irq_setup)
3215 dev_priv->display.hpd_irq_setup(dev);
3216 spin_unlock_irq(&dev_priv->irq_lock);
3217
3218 intel_display_resume(dev);
3219
3220 intel_hpd_init(dev_priv);
3221
3222 drm_modeset_unlock_all(dev);
3223 }
3224
3225 static void
3226 intel_finish_fb(struct drm_framebuffer *old_fb)
3227 {
3228 struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
3229 struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
3230 bool was_interruptible = dev_priv->mm.interruptible;
3231 int ret;
3232
3233 /* Big Hammer, we also need to ensure that any pending
3234 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
3235 * current scanout is retired before unpinning the old
3236 * framebuffer. Note that we rely on userspace rendering
3237 * into the buffer attached to the pipe they are waiting
3238 * on. If not, userspace generates a GPU hang with IPEHR
3239 * point to the MI_WAIT_FOR_EVENT.
3240 *
3241 * This should only fail upon a hung GPU, in which case we
3242 * can safely continue.
3243 */
3244 dev_priv->mm.interruptible = false;
3245 ret = i915_gem_object_wait_rendering(obj, true);
3246 dev_priv->mm.interruptible = was_interruptible;
3247
3248 WARN_ON(ret);
3249 }
3250
3251 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3252 {
3253 struct drm_device *dev = crtc->dev;
3254 struct drm_i915_private *dev_priv = dev->dev_private;
3255 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3256 bool pending;
3257
3258 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
3259 intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
3260 return false;
3261
3262 spin_lock_irq(&dev->event_lock);
3263 pending = to_intel_crtc(crtc)->unpin_work != NULL;
3264 spin_unlock_irq(&dev->event_lock);
3265
3266 return pending;
3267 }
3268
3269 static void intel_update_pipe_size(struct intel_crtc *crtc)
3270 {
3271 struct drm_device *dev = crtc->base.dev;
3272 struct drm_i915_private *dev_priv = dev->dev_private;
3273 const struct drm_display_mode *adjusted_mode;
3274
3275 if (!i915.fastboot)
3276 return;
3277
3278 /*
3279 * Update pipe size and adjust fitter if needed: the reason for this is
3280 * that in compute_mode_changes we check the native mode (not the pfit
3281 * mode) to see if we can flip rather than do a full mode set. In the
3282 * fastboot case, we'll flip, but if we don't update the pipesrc and
3283 * pfit state, we'll end up with a big fb scanned out into the wrong
3284 * sized surface.
3285 *
3286 * To fix this properly, we need to hoist the checks up into
3287 * compute_mode_changes (or above), check the actual pfit state and
3288 * whether the platform allows pfit disable with pipe active, and only
3289 * then update the pipesrc and pfit state, even on the flip path.
3290 */
3291
3292 adjusted_mode = &crtc->config->base.adjusted_mode;
3293
3294 I915_WRITE(PIPESRC(crtc->pipe),
3295 ((adjusted_mode->crtc_hdisplay - 1) << 16) |
3296 (adjusted_mode->crtc_vdisplay - 1));
3297 if (!crtc->config->pch_pfit.enabled &&
3298 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
3299 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
3300 I915_WRITE(PF_CTL(crtc->pipe), 0);
3301 I915_WRITE(PF_WIN_POS(crtc->pipe), 0);
3302 I915_WRITE(PF_WIN_SZ(crtc->pipe), 0);
3303 }
3304 crtc->config->pipe_src_w = adjusted_mode->crtc_hdisplay;
3305 crtc->config->pipe_src_h = adjusted_mode->crtc_vdisplay;
3306 }
3307
3308 static void intel_fdi_normal_train(struct drm_crtc *crtc)
3309 {
3310 struct drm_device *dev = crtc->dev;
3311 struct drm_i915_private *dev_priv = dev->dev_private;
3312 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3313 int pipe = intel_crtc->pipe;
3314 u32 reg, temp;
3315
3316 /* enable normal train */
3317 reg = FDI_TX_CTL(pipe);
3318 temp = I915_READ(reg);
3319 if (IS_IVYBRIDGE(dev)) {
3320 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3321 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
3322 } else {
3323 temp &= ~FDI_LINK_TRAIN_NONE;
3324 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
3325 }
3326 I915_WRITE(reg, temp);
3327
3328 reg = FDI_RX_CTL(pipe);
3329 temp = I915_READ(reg);
3330 if (HAS_PCH_CPT(dev)) {
3331 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3332 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3333 } else {
3334 temp &= ~FDI_LINK_TRAIN_NONE;
3335 temp |= FDI_LINK_TRAIN_NONE;
3336 }
3337 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3338
3339 /* wait one idle pattern time */
3340 POSTING_READ(reg);
3341 udelay(1000);
3342
3343 /* IVB wants error correction enabled */
3344 if (IS_IVYBRIDGE(dev))
3345 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3346 FDI_FE_ERRC_ENABLE);
3347 }
3348
3349 /* The FDI link training functions for ILK/Ibexpeak. */
3350 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3351 {
3352 struct drm_device *dev = crtc->dev;
3353 struct drm_i915_private *dev_priv = dev->dev_private;
3354 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3355 int pipe = intel_crtc->pipe;
3356 u32 reg, temp, tries;
3357
3358 /* FDI needs bits from pipe first */
3359 assert_pipe_enabled(dev_priv, pipe);
3360
3361 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3362 for train result */
3363 reg = FDI_RX_IMR(pipe);
3364 temp = I915_READ(reg);
3365 temp &= ~FDI_RX_SYMBOL_LOCK;
3366 temp &= ~FDI_RX_BIT_LOCK;
3367 I915_WRITE(reg, temp);
3368 I915_READ(reg);
3369 udelay(150);
3370
3371 /* enable CPU FDI TX and PCH FDI RX */
3372 reg = FDI_TX_CTL(pipe);
3373 temp = I915_READ(reg);
3374 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3375 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3376 temp &= ~FDI_LINK_TRAIN_NONE;
3377 temp |= FDI_LINK_TRAIN_PATTERN_1;
3378 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3379
3380 reg = FDI_RX_CTL(pipe);
3381 temp = I915_READ(reg);
3382 temp &= ~FDI_LINK_TRAIN_NONE;
3383 temp |= FDI_LINK_TRAIN_PATTERN_1;
3384 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3385
3386 POSTING_READ(reg);
3387 udelay(150);
3388
3389 /* Ironlake workaround, enable clock pointer after FDI enable*/
3390 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3391 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3392 FDI_RX_PHASE_SYNC_POINTER_EN);
3393
3394 reg = FDI_RX_IIR(pipe);
3395 for (tries = 0; tries < 5; tries++) {
3396 temp = I915_READ(reg);
3397 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3398
3399 if ((temp & FDI_RX_BIT_LOCK)) {
3400 DRM_DEBUG_KMS("FDI train 1 done.\n");
3401 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3402 break;
3403 }
3404 }
3405 if (tries == 5)
3406 DRM_ERROR("FDI train 1 fail!\n");
3407
3408 /* Train 2 */
3409 reg = FDI_TX_CTL(pipe);
3410 temp = I915_READ(reg);
3411 temp &= ~FDI_LINK_TRAIN_NONE;
3412 temp |= FDI_LINK_TRAIN_PATTERN_2;
3413 I915_WRITE(reg, temp);
3414
3415 reg = FDI_RX_CTL(pipe);
3416 temp = I915_READ(reg);
3417 temp &= ~FDI_LINK_TRAIN_NONE;
3418 temp |= FDI_LINK_TRAIN_PATTERN_2;
3419 I915_WRITE(reg, temp);
3420
3421 POSTING_READ(reg);
3422 udelay(150);
3423
3424 reg = FDI_RX_IIR(pipe);
3425 for (tries = 0; tries < 5; tries++) {
3426 temp = I915_READ(reg);
3427 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3428
3429 if (temp & FDI_RX_SYMBOL_LOCK) {
3430 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3431 DRM_DEBUG_KMS("FDI train 2 done.\n");
3432 break;
3433 }
3434 }
3435 if (tries == 5)
3436 DRM_ERROR("FDI train 2 fail!\n");
3437
3438 DRM_DEBUG_KMS("FDI train done\n");
3439
3440 }
3441
3442 static const int snb_b_fdi_train_param[] = {
3443 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3444 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3445 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3446 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3447 };
3448
3449 /* The FDI link training functions for SNB/Cougarpoint. */
3450 static void gen6_fdi_link_train(struct drm_crtc *crtc)
3451 {
3452 struct drm_device *dev = crtc->dev;
3453 struct drm_i915_private *dev_priv = dev->dev_private;
3454 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3455 int pipe = intel_crtc->pipe;
3456 u32 reg, temp, i, retry;
3457
3458 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3459 for train result */
3460 reg = FDI_RX_IMR(pipe);
3461 temp = I915_READ(reg);
3462 temp &= ~FDI_RX_SYMBOL_LOCK;
3463 temp &= ~FDI_RX_BIT_LOCK;
3464 I915_WRITE(reg, temp);
3465
3466 POSTING_READ(reg);
3467 udelay(150);
3468
3469 /* enable CPU FDI TX and PCH FDI RX */
3470 reg = FDI_TX_CTL(pipe);
3471 temp = I915_READ(reg);
3472 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3473 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3474 temp &= ~FDI_LINK_TRAIN_NONE;
3475 temp |= FDI_LINK_TRAIN_PATTERN_1;
3476 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3477 /* SNB-B */
3478 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3479 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3480
3481 I915_WRITE(FDI_RX_MISC(pipe),
3482 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3483
3484 reg = FDI_RX_CTL(pipe);
3485 temp = I915_READ(reg);
3486 if (HAS_PCH_CPT(dev)) {
3487 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3488 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3489 } else {
3490 temp &= ~FDI_LINK_TRAIN_NONE;
3491 temp |= FDI_LINK_TRAIN_PATTERN_1;
3492 }
3493 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3494
3495 POSTING_READ(reg);
3496 udelay(150);
3497
3498 for (i = 0; i < 4; i++) {
3499 reg = FDI_TX_CTL(pipe);
3500 temp = I915_READ(reg);
3501 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3502 temp |= snb_b_fdi_train_param[i];
3503 I915_WRITE(reg, temp);
3504
3505 POSTING_READ(reg);
3506 udelay(500);
3507
3508 for (retry = 0; retry < 5; retry++) {
3509 reg = FDI_RX_IIR(pipe);
3510 temp = I915_READ(reg);
3511 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3512 if (temp & FDI_RX_BIT_LOCK) {
3513 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3514 DRM_DEBUG_KMS("FDI train 1 done.\n");
3515 break;
3516 }
3517 udelay(50);
3518 }
3519 if (retry < 5)
3520 break;
3521 }
3522 if (i == 4)
3523 DRM_ERROR("FDI train 1 fail!\n");
3524
3525 /* Train 2 */
3526 reg = FDI_TX_CTL(pipe);
3527 temp = I915_READ(reg);
3528 temp &= ~FDI_LINK_TRAIN_NONE;
3529 temp |= FDI_LINK_TRAIN_PATTERN_2;
3530 if (IS_GEN6(dev)) {
3531 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3532 /* SNB-B */
3533 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3534 }
3535 I915_WRITE(reg, temp);
3536
3537 reg = FDI_RX_CTL(pipe);
3538 temp = I915_READ(reg);
3539 if (HAS_PCH_CPT(dev)) {
3540 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3541 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3542 } else {
3543 temp &= ~FDI_LINK_TRAIN_NONE;
3544 temp |= FDI_LINK_TRAIN_PATTERN_2;
3545 }
3546 I915_WRITE(reg, temp);
3547
3548 POSTING_READ(reg);
3549 udelay(150);
3550
3551 for (i = 0; i < 4; i++) {
3552 reg = FDI_TX_CTL(pipe);
3553 temp = I915_READ(reg);
3554 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3555 temp |= snb_b_fdi_train_param[i];
3556 I915_WRITE(reg, temp);
3557
3558 POSTING_READ(reg);
3559 udelay(500);
3560
3561 for (retry = 0; retry < 5; retry++) {
3562 reg = FDI_RX_IIR(pipe);
3563 temp = I915_READ(reg);
3564 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3565 if (temp & FDI_RX_SYMBOL_LOCK) {
3566 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3567 DRM_DEBUG_KMS("FDI train 2 done.\n");
3568 break;
3569 }
3570 udelay(50);
3571 }
3572 if (retry < 5)
3573 break;
3574 }
3575 if (i == 4)
3576 DRM_ERROR("FDI train 2 fail!\n");
3577
3578 DRM_DEBUG_KMS("FDI train done.\n");
3579 }
3580
3581 /* Manual link training for Ivy Bridge A0 parts */
3582 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3583 {
3584 struct drm_device *dev = crtc->dev;
3585 struct drm_i915_private *dev_priv = dev->dev_private;
3586 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3587 int pipe = intel_crtc->pipe;
3588 u32 reg, temp, i, j;
3589
3590 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3591 for train result */
3592 reg = FDI_RX_IMR(pipe);
3593 temp = I915_READ(reg);
3594 temp &= ~FDI_RX_SYMBOL_LOCK;
3595 temp &= ~FDI_RX_BIT_LOCK;
3596 I915_WRITE(reg, temp);
3597
3598 POSTING_READ(reg);
3599 udelay(150);
3600
3601 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3602 I915_READ(FDI_RX_IIR(pipe)));
3603
3604 /* Try each vswing and preemphasis setting twice before moving on */
3605 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3606 /* disable first in case we need to retry */
3607 reg = FDI_TX_CTL(pipe);
3608 temp = I915_READ(reg);
3609 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3610 temp &= ~FDI_TX_ENABLE;
3611 I915_WRITE(reg, temp);
3612
3613 reg = FDI_RX_CTL(pipe);
3614 temp = I915_READ(reg);
3615 temp &= ~FDI_LINK_TRAIN_AUTO;
3616 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3617 temp &= ~FDI_RX_ENABLE;
3618 I915_WRITE(reg, temp);
3619
3620 /* enable CPU FDI TX and PCH FDI RX */
3621 reg = FDI_TX_CTL(pipe);
3622 temp = I915_READ(reg);
3623 temp &= ~FDI_DP_PORT_WIDTH_MASK;
3624 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3625 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
3626 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3627 temp |= snb_b_fdi_train_param[j/2];
3628 temp |= FDI_COMPOSITE_SYNC;
3629 I915_WRITE(reg, temp | FDI_TX_ENABLE);
3630
3631 I915_WRITE(FDI_RX_MISC(pipe),
3632 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3633
3634 reg = FDI_RX_CTL(pipe);
3635 temp = I915_READ(reg);
3636 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3637 temp |= FDI_COMPOSITE_SYNC;
3638 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3639
3640 POSTING_READ(reg);
3641 udelay(1); /* should be 0.5us */
3642
3643 for (i = 0; i < 4; i++) {
3644 reg = FDI_RX_IIR(pipe);
3645 temp = I915_READ(reg);
3646 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3647
3648 if (temp & FDI_RX_BIT_LOCK ||
3649 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3650 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3651 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3652 i);
3653 break;
3654 }
3655 udelay(1); /* should be 0.5us */
3656 }
3657 if (i == 4) {
3658 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3659 continue;
3660 }
3661
3662 /* Train 2 */
3663 reg = FDI_TX_CTL(pipe);
3664 temp = I915_READ(reg);
3665 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3666 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3667 I915_WRITE(reg, temp);
3668
3669 reg = FDI_RX_CTL(pipe);
3670 temp = I915_READ(reg);
3671 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3672 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3673 I915_WRITE(reg, temp);
3674
3675 POSTING_READ(reg);
3676 udelay(2); /* should be 1.5us */
3677
3678 for (i = 0; i < 4; i++) {
3679 reg = FDI_RX_IIR(pipe);
3680 temp = I915_READ(reg);
3681 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3682
3683 if (temp & FDI_RX_SYMBOL_LOCK ||
3684 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3685 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3686 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3687 i);
3688 goto train_done;
3689 }
3690 udelay(2); /* should be 1.5us */
3691 }
3692 if (i == 4)
3693 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
3694 }
3695
3696 train_done:
3697 DRM_DEBUG_KMS("FDI train done.\n");
3698 }
3699
3700 static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
3701 {
3702 struct drm_device *dev = intel_crtc->base.dev;
3703 struct drm_i915_private *dev_priv = dev->dev_private;
3704 int pipe = intel_crtc->pipe;
3705 u32 reg, temp;
3706
3707
3708 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
3709 reg = FDI_RX_CTL(pipe);
3710 temp = I915_READ(reg);
3711 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
3712 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
3713 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3714 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3715
3716 POSTING_READ(reg);
3717 udelay(200);
3718
3719 /* Switch from Rawclk to PCDclk */
3720 temp = I915_READ(reg);
3721 I915_WRITE(reg, temp | FDI_PCDCLK);
3722
3723 POSTING_READ(reg);
3724 udelay(200);
3725
3726 /* Enable CPU FDI TX PLL, always on for Ironlake */
3727 reg = FDI_TX_CTL(pipe);
3728 temp = I915_READ(reg);
3729 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3730 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
3731
3732 POSTING_READ(reg);
3733 udelay(100);
3734 }
3735 }
3736
3737 static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3738 {
3739 struct drm_device *dev = intel_crtc->base.dev;
3740 struct drm_i915_private *dev_priv = dev->dev_private;
3741 int pipe = intel_crtc->pipe;
3742 u32 reg, temp;
3743
3744 /* Switch from PCDclk to Rawclk */
3745 reg = FDI_RX_CTL(pipe);
3746 temp = I915_READ(reg);
3747 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3748
3749 /* Disable CPU FDI TX PLL */
3750 reg = FDI_TX_CTL(pipe);
3751 temp = I915_READ(reg);
3752 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3753
3754 POSTING_READ(reg);
3755 udelay(100);
3756
3757 reg = FDI_RX_CTL(pipe);
3758 temp = I915_READ(reg);
3759 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3760
3761 /* Wait for the clocks to turn off. */
3762 POSTING_READ(reg);
3763 udelay(100);
3764 }
3765
3766 static void ironlake_fdi_disable(struct drm_crtc *crtc)
3767 {
3768 struct drm_device *dev = crtc->dev;
3769 struct drm_i915_private *dev_priv = dev->dev_private;
3770 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3771 int pipe = intel_crtc->pipe;
3772 u32 reg, temp;
3773
3774 /* disable CPU FDI tx and PCH FDI rx */
3775 reg = FDI_TX_CTL(pipe);
3776 temp = I915_READ(reg);
3777 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3778 POSTING_READ(reg);
3779
3780 reg = FDI_RX_CTL(pipe);
3781 temp = I915_READ(reg);
3782 temp &= ~(0x7 << 16);
3783 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3784 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3785
3786 POSTING_READ(reg);
3787 udelay(100);
3788
3789 /* Ironlake workaround, disable clock pointer after downing FDI */
3790 if (HAS_PCH_IBX(dev))
3791 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3792
3793 /* still set train pattern 1 */
3794 reg = FDI_TX_CTL(pipe);
3795 temp = I915_READ(reg);
3796 temp &= ~FDI_LINK_TRAIN_NONE;
3797 temp |= FDI_LINK_TRAIN_PATTERN_1;
3798 I915_WRITE(reg, temp);
3799
3800 reg = FDI_RX_CTL(pipe);
3801 temp = I915_READ(reg);
3802 if (HAS_PCH_CPT(dev)) {
3803 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3804 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3805 } else {
3806 temp &= ~FDI_LINK_TRAIN_NONE;
3807 temp |= FDI_LINK_TRAIN_PATTERN_1;
3808 }
3809 /* BPC in FDI rx is consistent with that in PIPECONF */
3810 temp &= ~(0x07 << 16);
3811 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
3812 I915_WRITE(reg, temp);
3813
3814 POSTING_READ(reg);
3815 udelay(100);
3816 }
3817
3818 bool intel_has_pending_fb_unpin(struct drm_device *dev)
3819 {
3820 struct intel_crtc *crtc;
3821
3822 /* Note that we don't need to be called with mode_config.lock here
3823 * as our list of CRTC objects is static for the lifetime of the
3824 * device and so cannot disappear as we iterate. Similarly, we can
3825 * happily treat the predicates as racy, atomic checks as userspace
3826 * cannot claim and pin a new fb without at least acquring the
3827 * struct_mutex and so serialising with us.
3828 */
3829 for_each_intel_crtc(dev, crtc) {
3830 if (atomic_read(&crtc->unpin_work_count) == 0)
3831 continue;
3832
3833 if (crtc->unpin_work)
3834 intel_wait_for_vblank(dev, crtc->pipe);
3835
3836 return true;
3837 }
3838
3839 return false;
3840 }
3841
3842 static void page_flip_completed(struct intel_crtc *intel_crtc)
3843 {
3844 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3845 struct intel_unpin_work *work = intel_crtc->unpin_work;
3846
3847 /* ensure that the unpin work is consistent wrt ->pending. */
3848 smp_rmb();
3849 intel_crtc->unpin_work = NULL;
3850
3851 if (work->event)
3852 drm_send_vblank_event(intel_crtc->base.dev,
3853 intel_crtc->pipe,
3854 work->event);
3855
3856 drm_crtc_vblank_put(&intel_crtc->base);
3857
3858 wake_up_all(&dev_priv->pending_flip_queue);
3859 queue_work(dev_priv->wq, &work->work);
3860
3861 trace_i915_flip_complete(intel_crtc->plane,
3862 work->pending_flip_obj);
3863 }
3864
3865 void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
3866 {
3867 struct drm_device *dev = crtc->dev;
3868 struct drm_i915_private *dev_priv = dev->dev_private;
3869
3870 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
3871 if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
3872 !intel_crtc_has_pending_flip(crtc),
3873 60*HZ) == 0)) {
3874 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3875
3876 spin_lock_irq(&dev->event_lock);
3877 if (intel_crtc->unpin_work) {
3878 WARN_ONCE(1, "Removing stuck page flip\n");
3879 page_flip_completed(intel_crtc);
3880 }
3881 spin_unlock_irq(&dev->event_lock);
3882 }
3883
3884 if (crtc->primary->fb) {
3885 mutex_lock(&dev->struct_mutex);
3886 intel_finish_fb(crtc->primary->fb);
3887 mutex_unlock(&dev->struct_mutex);
3888 }
3889 }
3890
3891 /* Program iCLKIP clock to the desired frequency */
3892 static void lpt_program_iclkip(struct drm_crtc *crtc)
3893 {
3894 struct drm_device *dev = crtc->dev;
3895 struct drm_i915_private *dev_priv = dev->dev_private;
3896 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
3897 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3898 u32 temp;
3899
3900 mutex_lock(&dev_priv->sb_lock);
3901
3902 /* It is necessary to ungate the pixclk gate prior to programming
3903 * the divisors, and gate it back when it is done.
3904 */
3905 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3906
3907 /* Disable SSCCTL */
3908 intel_sbi_write(dev_priv, SBI_SSCCTL6,
3909 intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
3910 SBI_SSCCTL_DISABLE,
3911 SBI_ICLK);
3912
3913 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
3914 if (clock == 20000) {
3915 auxdiv = 1;
3916 divsel = 0x41;
3917 phaseinc = 0x20;
3918 } else {
3919 /* The iCLK virtual clock root frequency is in MHz,
3920 * but the adjusted_mode->crtc_clock in in KHz. To get the
3921 * divisors, it is necessary to divide one by another, so we
3922 * convert the virtual clock precision to KHz here for higher
3923 * precision.
3924 */
3925 u32 iclk_virtual_root_freq = 172800 * 1000;
3926 u32 iclk_pi_range = 64;
3927 u32 desired_divisor, msb_divisor_value, pi_value;
3928
3929 desired_divisor = (iclk_virtual_root_freq / clock);
3930 msb_divisor_value = desired_divisor / iclk_pi_range;
3931 pi_value = desired_divisor % iclk_pi_range;
3932
3933 auxdiv = 0;
3934 divsel = msb_divisor_value - 2;
3935 phaseinc = pi_value;
3936 }
3937
3938 /* This should not happen with any sane values */
3939 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
3940 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
3941 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
3942 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
3943
3944 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
3945 clock,
3946 auxdiv,
3947 divsel,
3948 phasedir,
3949 phaseinc);
3950
3951 /* Program SSCDIVINTPHASE6 */
3952 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
3953 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
3954 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
3955 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
3956 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
3957 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
3958 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
3959 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
3960
3961 /* Program SSCAUXDIV */
3962 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
3963 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
3964 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
3965 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
3966
3967 /* Enable modulator and associated divider */
3968 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
3969 temp &= ~SBI_SSCCTL_DISABLE;
3970 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
3971
3972 /* Wait for initialization time */
3973 udelay(24);
3974
3975 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
3976
3977 mutex_unlock(&dev_priv->sb_lock);
3978 }
3979
3980 static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
3981 enum pipe pch_transcoder)
3982 {
3983 struct drm_device *dev = crtc->base.dev;
3984 struct drm_i915_private *dev_priv = dev->dev_private;
3985 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
3986
3987 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
3988 I915_READ(HTOTAL(cpu_transcoder)));
3989 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
3990 I915_READ(HBLANK(cpu_transcoder)));
3991 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
3992 I915_READ(HSYNC(cpu_transcoder)));
3993
3994 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
3995 I915_READ(VTOTAL(cpu_transcoder)));
3996 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
3997 I915_READ(VBLANK(cpu_transcoder)));
3998 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
3999 I915_READ(VSYNC(cpu_transcoder)));
4000 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4001 I915_READ(VSYNCSHIFT(cpu_transcoder)));
4002 }
4003
4004 static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
4005 {
4006 struct drm_i915_private *dev_priv = dev->dev_private;
4007 uint32_t temp;
4008
4009 temp = I915_READ(SOUTH_CHICKEN1);
4010 if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
4011 return;
4012
4013 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4014 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4015
4016 temp &= ~FDI_BC_BIFURCATION_SELECT;
4017 if (enable)
4018 temp |= FDI_BC_BIFURCATION_SELECT;
4019
4020 DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
4021 I915_WRITE(SOUTH_CHICKEN1, temp);
4022 POSTING_READ(SOUTH_CHICKEN1);
4023 }
4024
4025 static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
4026 {
4027 struct drm_device *dev = intel_crtc->base.dev;
4028
4029 switch (intel_crtc->pipe) {
4030 case PIPE_A:
4031 break;
4032 case PIPE_B:
4033 if (intel_crtc->config->fdi_lanes > 2)
4034 cpt_set_fdi_bc_bifurcation(dev, false);
4035 else
4036 cpt_set_fdi_bc_bifurcation(dev, true);
4037
4038 break;
4039 case PIPE_C:
4040 cpt_set_fdi_bc_bifurcation(dev, true);
4041
4042 break;
4043 default:
4044 BUG();
4045 }
4046 }
4047
4048 /*
4049 * Enable PCH resources required for PCH ports:
4050 * - PCH PLLs
4051 * - FDI training & RX/TX
4052 * - update transcoder timings
4053 * - DP transcoding bits
4054 * - transcoder
4055 */
4056 static void ironlake_pch_enable(struct drm_crtc *crtc)
4057 {
4058 struct drm_device *dev = crtc->dev;
4059 struct drm_i915_private *dev_priv = dev->dev_private;
4060 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4061 int pipe = intel_crtc->pipe;
4062 u32 reg, temp;
4063
4064 assert_pch_transcoder_disabled(dev_priv, pipe);
4065
4066 if (IS_IVYBRIDGE(dev))
4067 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
4068
4069 /* Write the TU size bits before fdi link training, so that error
4070 * detection works. */
4071 I915_WRITE(FDI_RX_TUSIZE1(pipe),
4072 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4073
4074 /* For PCH output, training FDI link */
4075 dev_priv->display.fdi_link_train(crtc);
4076
4077 /* We need to program the right clock selection before writing the pixel
4078 * mutliplier into the DPLL. */
4079 if (HAS_PCH_CPT(dev)) {
4080 u32 sel;
4081
4082 temp = I915_READ(PCH_DPLL_SEL);
4083 temp |= TRANS_DPLL_ENABLE(pipe);
4084 sel = TRANS_DPLLB_SEL(pipe);
4085 if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
4086 temp |= sel;
4087 else
4088 temp &= ~sel;
4089 I915_WRITE(PCH_DPLL_SEL, temp);
4090 }
4091
4092 /* XXX: pch pll's can be enabled any time before we enable the PCH
4093 * transcoder, and we actually should do this to not upset any PCH
4094 * transcoder that already use the clock when we share it.
4095 *
4096 * Note that enable_shared_dpll tries to do the right thing, but
4097 * get_shared_dpll unconditionally resets the pll - we need that to have
4098 * the right LVDS enable sequence. */
4099 intel_enable_shared_dpll(intel_crtc);
4100
4101 /* set transcoder timing, panel must allow it */
4102 assert_panel_unlocked(dev_priv, pipe);
4103 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
4104
4105 intel_fdi_normal_train(crtc);
4106
4107 /* For PCH DP, enable TRANS_DP_CTL */
4108 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
4109 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
4110 reg = TRANS_DP_CTL(pipe);
4111 temp = I915_READ(reg);
4112 temp &= ~(TRANS_DP_PORT_SEL_MASK |
4113 TRANS_DP_SYNC_MASK |
4114 TRANS_DP_BPC_MASK);
4115 temp |= TRANS_DP_OUTPUT_ENABLE;
4116 temp |= bpc << 9; /* same format but at 11:9 */
4117
4118 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
4119 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
4120 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
4121 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
4122
4123 switch (intel_trans_dp_port_sel(crtc)) {
4124 case PCH_DP_B:
4125 temp |= TRANS_DP_PORT_SEL_B;
4126 break;
4127 case PCH_DP_C:
4128 temp |= TRANS_DP_PORT_SEL_C;
4129 break;
4130 case PCH_DP_D:
4131 temp |= TRANS_DP_PORT_SEL_D;
4132 break;
4133 default:
4134 BUG();
4135 }
4136
4137 I915_WRITE(reg, temp);
4138 }
4139
4140 ironlake_enable_pch_transcoder(dev_priv, pipe);
4141 }
4142
4143 static void lpt_pch_enable(struct drm_crtc *crtc)
4144 {
4145 struct drm_device *dev = crtc->dev;
4146 struct drm_i915_private *dev_priv = dev->dev_private;
4147 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4148 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
4149
4150 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
4151
4152 lpt_program_iclkip(crtc);
4153
4154 /* Set transcoder timing. */
4155 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
4156
4157 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
4158 }
4159
4160 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
4161 struct intel_crtc_state *crtc_state)
4162 {
4163 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
4164 struct intel_shared_dpll *pll;
4165 struct intel_shared_dpll_config *shared_dpll;
4166 enum intel_dpll_id i;
4167
4168 shared_dpll = intel_atomic_get_shared_dpll_state(crtc_state->base.state);
4169
4170 if (HAS_PCH_IBX(dev_priv->dev)) {
4171 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
4172 i = (enum intel_dpll_id) crtc->pipe;
4173 pll = &dev_priv->shared_dplls[i];
4174
4175 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4176 crtc->base.base.id, pll->name);
4177
4178 WARN_ON(shared_dpll[i].crtc_mask);
4179
4180 goto found;
4181 }
4182
4183 if (IS_BROXTON(dev_priv->dev)) {
4184 /* PLL is attached to port in bxt */
4185 struct intel_encoder *encoder;
4186 struct intel_digital_port *intel_dig_port;
4187
4188 encoder = intel_ddi_get_crtc_new_encoder(crtc_state);
4189 if (WARN_ON(!encoder))
4190 return NULL;
4191
4192 intel_dig_port = enc_to_dig_port(&encoder->base);
4193 /* 1:1 mapping between ports and PLLs */
4194 i = (enum intel_dpll_id)intel_dig_port->port;
4195 pll = &dev_priv->shared_dplls[i];
4196 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4197 crtc->base.base.id, pll->name);
4198 WARN_ON(shared_dpll[i].crtc_mask);
4199
4200 goto found;
4201 }
4202
4203 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4204 pll = &dev_priv->shared_dplls[i];
4205
4206 /* Only want to check enabled timings first */
4207 if (shared_dpll[i].crtc_mask == 0)
4208 continue;
4209
4210 if (memcmp(&crtc_state->dpll_hw_state,
4211 &shared_dpll[i].hw_state,
4212 sizeof(crtc_state->dpll_hw_state)) == 0) {
4213 DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
4214 crtc->base.base.id, pll->name,
4215 shared_dpll[i].crtc_mask,
4216 pll->active);
4217 goto found;
4218 }
4219 }
4220
4221 /* Ok no matching timings, maybe there's a free one? */
4222 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4223 pll = &dev_priv->shared_dplls[i];
4224 if (shared_dpll[i].crtc_mask == 0) {
4225 DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
4226 crtc->base.base.id, pll->name);
4227 goto found;
4228 }
4229 }
4230
4231 return NULL;
4232
4233 found:
4234 if (shared_dpll[i].crtc_mask == 0)
4235 shared_dpll[i].hw_state =
4236 crtc_state->dpll_hw_state;
4237
4238 crtc_state->shared_dpll = i;
4239 DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
4240 pipe_name(crtc->pipe));
4241
4242 shared_dpll[i].crtc_mask |= 1 << crtc->pipe;
4243
4244 return pll;
4245 }
4246
4247 static void intel_shared_dpll_commit(struct drm_atomic_state *state)
4248 {
4249 struct drm_i915_private *dev_priv = to_i915(state->dev);
4250 struct intel_shared_dpll_config *shared_dpll;
4251 struct intel_shared_dpll *pll;
4252 enum intel_dpll_id i;
4253
4254 if (!to_intel_atomic_state(state)->dpll_set)
4255 return;
4256
4257 shared_dpll = to_intel_atomic_state(state)->shared_dpll;
4258 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4259 pll = &dev_priv->shared_dplls[i];
4260 pll->config = shared_dpll[i];
4261 }
4262 }
4263
4264 static void cpt_verify_modeset(struct drm_device *dev, int pipe)
4265 {
4266 struct drm_i915_private *dev_priv = dev->dev_private;
4267 int dslreg = PIPEDSL(pipe);
4268 u32 temp;
4269
4270 temp = I915_READ(dslreg);
4271 udelay(500);
4272 if (wait_for(I915_READ(dslreg) != temp, 5)) {
4273 if (wait_for(I915_READ(dslreg) != temp, 5))
4274 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
4275 }
4276 }
4277
4278 static int
4279 skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
4280 unsigned scaler_user, int *scaler_id, unsigned int rotation,
4281 int src_w, int src_h, int dst_w, int dst_h)
4282 {
4283 struct intel_crtc_scaler_state *scaler_state =
4284 &crtc_state->scaler_state;
4285 struct intel_crtc *intel_crtc =
4286 to_intel_crtc(crtc_state->base.crtc);
4287 int need_scaling;
4288
4289 need_scaling = intel_rotation_90_or_270(rotation) ?
4290 (src_h != dst_w || src_w != dst_h):
4291 (src_w != dst_w || src_h != dst_h);
4292
4293 /*
4294 * if plane is being disabled or scaler is no more required or force detach
4295 * - free scaler binded to this plane/crtc
4296 * - in order to do this, update crtc->scaler_usage
4297 *
4298 * Here scaler state in crtc_state is set free so that
4299 * scaler can be assigned to other user. Actual register
4300 * update to free the scaler is done in plane/panel-fit programming.
4301 * For this purpose crtc/plane_state->scaler_id isn't reset here.
4302 */
4303 if (force_detach || !need_scaling) {
4304 if (*scaler_id >= 0) {
4305 scaler_state->scaler_users &= ~(1 << scaler_user);
4306 scaler_state->scalers[*scaler_id].in_use = 0;
4307
4308 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4309 "Staged freeing scaler id %d scaler_users = 0x%x\n",
4310 intel_crtc->pipe, scaler_user, *scaler_id,
4311 scaler_state->scaler_users);
4312 *scaler_id = -1;
4313 }
4314 return 0;
4315 }
4316
4317 /* range checks */
4318 if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
4319 dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
4320
4321 src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
4322 dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
4323 DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
4324 "size is out of scaler range\n",
4325 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
4326 return -EINVAL;
4327 }
4328
4329 /* mark this plane as a scaler user in crtc_state */
4330 scaler_state->scaler_users |= (1 << scaler_user);
4331 DRM_DEBUG_KMS("scaler_user index %u.%u: "
4332 "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
4333 intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
4334 scaler_state->scaler_users);
4335
4336 return 0;
4337 }
4338
4339 /**
4340 * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
4341 *
4342 * @state: crtc's scaler state
4343 *
4344 * Return
4345 * 0 - scaler_usage updated successfully
4346 * error - requested scaling cannot be supported or other error condition
4347 */
4348 int skl_update_scaler_crtc(struct intel_crtc_state *state)
4349 {
4350 struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
4351 struct drm_display_mode *adjusted_mode =
4352 &state->base.adjusted_mode;
4353
4354 DRM_DEBUG_KMS("Updating scaler for [CRTC:%i] scaler_user index %u.%u\n",
4355 intel_crtc->base.base.id, intel_crtc->pipe, SKL_CRTC_INDEX);
4356
4357 return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
4358 &state->scaler_state.scaler_id, DRM_ROTATE_0,
4359 state->pipe_src_w, state->pipe_src_h,
4360 adjusted_mode->hdisplay, adjusted_mode->vdisplay);
4361 }
4362
4363 /**
4364 * skl_update_scaler_plane - Stages update to scaler state for a given plane.
4365 *
4366 * @state: crtc's scaler state
4367 * @plane_state: atomic plane state to update
4368 *
4369 * Return
4370 * 0 - scaler_usage updated successfully
4371 * error - requested scaling cannot be supported or other error condition
4372 */
4373 static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
4374 struct intel_plane_state *plane_state)
4375 {
4376
4377 struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
4378 struct intel_plane *intel_plane =
4379 to_intel_plane(plane_state->base.plane);
4380 struct drm_framebuffer *fb = plane_state->base.fb;
4381 int ret;
4382
4383 bool force_detach = !fb || !plane_state->visible;
4384
4385 DRM_DEBUG_KMS("Updating scaler for [PLANE:%d] scaler_user index %u.%u\n",
4386 intel_plane->base.base.id, intel_crtc->pipe,
4387 drm_plane_index(&intel_plane->base));
4388
4389 ret = skl_update_scaler(crtc_state, force_detach,
4390 drm_plane_index(&intel_plane->base),
4391 &plane_state->scaler_id,
4392 plane_state->base.rotation,
4393 drm_rect_width(&plane_state->src) >> 16,
4394 drm_rect_height(&plane_state->src) >> 16,
4395 drm_rect_width(&plane_state->dst),
4396 drm_rect_height(&plane_state->dst));
4397
4398 if (ret || plane_state->scaler_id < 0)
4399 return ret;
4400
4401 /* check colorkey */
4402 if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
4403 DRM_DEBUG_KMS("[PLANE:%d] scaling with color key not allowed",
4404 intel_plane->base.base.id);
4405 return -EINVAL;
4406 }
4407
4408 /* Check src format */
4409 switch (fb->pixel_format) {
4410 case DRM_FORMAT_RGB565:
4411 case DRM_FORMAT_XBGR8888:
4412 case DRM_FORMAT_XRGB8888:
4413 case DRM_FORMAT_ABGR8888:
4414 case DRM_FORMAT_ARGB8888:
4415 case DRM_FORMAT_XRGB2101010:
4416 case DRM_FORMAT_XBGR2101010:
4417 case DRM_FORMAT_YUYV:
4418 case DRM_FORMAT_YVYU:
4419 case DRM_FORMAT_UYVY:
4420 case DRM_FORMAT_VYUY:
4421 break;
4422 default:
4423 DRM_DEBUG_KMS("[PLANE:%d] FB:%d unsupported scaling format 0x%x\n",
4424 intel_plane->base.base.id, fb->base.id, fb->pixel_format);
4425 return -EINVAL;
4426 }
4427
4428 return 0;
4429 }
4430
4431 static void skylake_scaler_disable(struct intel_crtc *crtc)
4432 {
4433 int i;
4434
4435 for (i = 0; i < crtc->num_scalers; i++)
4436 skl_detach_scaler(crtc, i);
4437 }
4438
4439 static void skylake_pfit_enable(struct intel_crtc *crtc)
4440 {
4441 struct drm_device *dev = crtc->base.dev;
4442 struct drm_i915_private *dev_priv = dev->dev_private;
4443 int pipe = crtc->pipe;
4444 struct intel_crtc_scaler_state *scaler_state =
4445 &crtc->config->scaler_state;
4446
4447 DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
4448
4449 if (crtc->config->pch_pfit.enabled) {
4450 int id;
4451
4452 if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
4453 DRM_ERROR("Requesting pfit without getting a scaler first\n");
4454 return;
4455 }
4456
4457 id = scaler_state->scaler_id;
4458 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
4459 PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
4460 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
4461 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
4462
4463 DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
4464 }
4465 }
4466
4467 static void ironlake_pfit_enable(struct intel_crtc *crtc)
4468 {
4469 struct drm_device *dev = crtc->base.dev;
4470 struct drm_i915_private *dev_priv = dev->dev_private;
4471 int pipe = crtc->pipe;
4472
4473 if (crtc->config->pch_pfit.enabled) {
4474 /* Force use of hard-coded filter coefficients
4475 * as some pre-programmed values are broken,
4476 * e.g. x201.
4477 */
4478 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4479 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4480 PF_PIPE_SEL_IVB(pipe));
4481 else
4482 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
4483 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4484 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
4485 }
4486 }
4487
4488 void hsw_enable_ips(struct intel_crtc *crtc)
4489 {
4490 struct drm_device *dev = crtc->base.dev;
4491 struct drm_i915_private *dev_priv = dev->dev_private;
4492
4493 if (!crtc->config->ips_enabled)
4494 return;
4495
4496 /* We can only enable IPS after we enable a plane and wait for a vblank */
4497 intel_wait_for_vblank(dev, crtc->pipe);
4498
4499 assert_plane_enabled(dev_priv, crtc->plane);
4500 if (IS_BROADWELL(dev)) {
4501 mutex_lock(&dev_priv->rps.hw_lock);
4502 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4503 mutex_unlock(&dev_priv->rps.hw_lock);
4504 /* Quoting Art Runyan: "its not safe to expect any particular
4505 * value in IPS_CTL bit 31 after enabling IPS through the
4506 * mailbox." Moreover, the mailbox may return a bogus state,
4507 * so we need to just enable it and continue on.
4508 */
4509 } else {
4510 I915_WRITE(IPS_CTL, IPS_ENABLE);
4511 /* The bit only becomes 1 in the next vblank, so this wait here
4512 * is essentially intel_wait_for_vblank. If we don't have this
4513 * and don't wait for vblanks until the end of crtc_enable, then
4514 * the HW state readout code will complain that the expected
4515 * IPS_CTL value is not the one we read. */
4516 if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
4517 DRM_ERROR("Timed out waiting for IPS enable\n");
4518 }
4519 }
4520
4521 void hsw_disable_ips(struct intel_crtc *crtc)
4522 {
4523 struct drm_device *dev = crtc->base.dev;
4524 struct drm_i915_private *dev_priv = dev->dev_private;
4525
4526 if (!crtc->config->ips_enabled)
4527 return;
4528
4529 assert_plane_enabled(dev_priv, crtc->plane);
4530 if (IS_BROADWELL(dev)) {
4531 mutex_lock(&dev_priv->rps.hw_lock);
4532 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4533 mutex_unlock(&dev_priv->rps.hw_lock);
4534 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4535 if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
4536 DRM_ERROR("Timed out waiting for IPS disable\n");
4537 } else {
4538 I915_WRITE(IPS_CTL, 0);
4539 POSTING_READ(IPS_CTL);
4540 }
4541
4542 /* We need to wait for a vblank before we can disable the plane. */
4543 intel_wait_for_vblank(dev, crtc->pipe);
4544 }
4545
4546 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4547 static void intel_crtc_load_lut(struct drm_crtc *crtc)
4548 {
4549 struct drm_device *dev = crtc->dev;
4550 struct drm_i915_private *dev_priv = dev->dev_private;
4551 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4552 enum pipe pipe = intel_crtc->pipe;
4553 int palreg = PALETTE(pipe);
4554 int i;
4555 bool reenable_ips = false;
4556
4557 /* The clocks have to be on to load the palette. */
4558 if (!crtc->state->active)
4559 return;
4560
4561 if (HAS_GMCH_DISPLAY(dev_priv->dev)) {
4562 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
4563 assert_dsi_pll_enabled(dev_priv);
4564 else
4565 assert_pll_enabled(dev_priv, pipe);
4566 }
4567
4568 /* use legacy palette for Ironlake */
4569 if (!HAS_GMCH_DISPLAY(dev))
4570 palreg = LGC_PALETTE(pipe);
4571
4572 /* Workaround : Do not read or write the pipe palette/gamma data while
4573 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
4574 */
4575 if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
4576 ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
4577 GAMMA_MODE_MODE_SPLIT)) {
4578 hsw_disable_ips(intel_crtc);
4579 reenable_ips = true;
4580 }
4581
4582 for (i = 0; i < 256; i++) {
4583 I915_WRITE(palreg + 4 * i,
4584 (intel_crtc->lut_r[i] << 16) |
4585 (intel_crtc->lut_g[i] << 8) |
4586 intel_crtc->lut_b[i]);
4587 }
4588
4589 if (reenable_ips)
4590 hsw_enable_ips(intel_crtc);
4591 }
4592
4593 static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
4594 {
4595 if (intel_crtc->overlay) {
4596 struct drm_device *dev = intel_crtc->base.dev;
4597 struct drm_i915_private *dev_priv = dev->dev_private;
4598
4599 mutex_lock(&dev->struct_mutex);
4600 dev_priv->mm.interruptible = false;
4601 (void) intel_overlay_switch_off(intel_crtc->overlay);
4602 dev_priv->mm.interruptible = true;
4603 mutex_unlock(&dev->struct_mutex);
4604 }
4605
4606 /* Let userspace switch the overlay on again. In most cases userspace
4607 * has to recompute where to put it anyway.
4608 */
4609 }
4610
4611 /**
4612 * intel_post_enable_primary - Perform operations after enabling primary plane
4613 * @crtc: the CRTC whose primary plane was just enabled
4614 *
4615 * Performs potentially sleeping operations that must be done after the primary
4616 * plane is enabled, such as updating FBC and IPS. Note that this may be
4617 * called due to an explicit primary plane update, or due to an implicit
4618 * re-enable that is caused when a sprite plane is updated to no longer
4619 * completely hide the primary plane.
4620 */
4621 static void
4622 intel_post_enable_primary(struct drm_crtc *crtc)
4623 {
4624 struct drm_device *dev = crtc->dev;
4625 struct drm_i915_private *dev_priv = dev->dev_private;
4626 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4627 int pipe = intel_crtc->pipe;
4628
4629 /*
4630 * BDW signals flip done immediately if the plane
4631 * is disabled, even if the plane enable is already
4632 * armed to occur at the next vblank :(
4633 */
4634 if (IS_BROADWELL(dev))
4635 intel_wait_for_vblank(dev, pipe);
4636
4637 /*
4638 * FIXME IPS should be fine as long as one plane is
4639 * enabled, but in practice it seems to have problems
4640 * when going from primary only to sprite only and vice
4641 * versa.
4642 */
4643 hsw_enable_ips(intel_crtc);
4644
4645 /*
4646 * Gen2 reports pipe underruns whenever all planes are disabled.
4647 * So don't enable underrun reporting before at least some planes
4648 * are enabled.
4649 * FIXME: Need to fix the logic to work when we turn off all planes
4650 * but leave the pipe running.
4651 */
4652 if (IS_GEN2(dev))
4653 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4654
4655 /* Underruns don't raise interrupts, so check manually. */
4656 if (HAS_GMCH_DISPLAY(dev))
4657 i9xx_check_fifo_underruns(dev_priv);
4658 }
4659
4660 /**
4661 * intel_pre_disable_primary - Perform operations before disabling primary plane
4662 * @crtc: the CRTC whose primary plane is to be disabled
4663 *
4664 * Performs potentially sleeping operations that must be done before the
4665 * primary plane is disabled, such as updating FBC and IPS. Note that this may
4666 * be called due to an explicit primary plane update, or due to an implicit
4667 * disable that is caused when a sprite plane completely hides the primary
4668 * plane.
4669 */
4670 static void
4671 intel_pre_disable_primary(struct drm_crtc *crtc)
4672 {
4673 struct drm_device *dev = crtc->dev;
4674 struct drm_i915_private *dev_priv = dev->dev_private;
4675 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4676 int pipe = intel_crtc->pipe;
4677
4678 /*
4679 * Gen2 reports pipe underruns whenever all planes are disabled.
4680 * So diasble underrun reporting before all the planes get disabled.
4681 * FIXME: Need to fix the logic to work when we turn off all planes
4682 * but leave the pipe running.
4683 */
4684 if (IS_GEN2(dev))
4685 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4686
4687 /*
4688 * Vblank time updates from the shadow to live plane control register
4689 * are blocked if the memory self-refresh mode is active at that
4690 * moment. So to make sure the plane gets truly disabled, disable
4691 * first the self-refresh mode. The self-refresh enable bit in turn
4692 * will be checked/applied by the HW only at the next frame start
4693 * event which is after the vblank start event, so we need to have a
4694 * wait-for-vblank between disabling the plane and the pipe.
4695 */
4696 if (HAS_GMCH_DISPLAY(dev)) {
4697 intel_set_memory_cxsr(dev_priv, false);
4698 dev_priv->wm.vlv.cxsr = false;
4699 intel_wait_for_vblank(dev, pipe);
4700 }
4701
4702 /*
4703 * FIXME IPS should be fine as long as one plane is
4704 * enabled, but in practice it seems to have problems
4705 * when going from primary only to sprite only and vice
4706 * versa.
4707 */
4708 hsw_disable_ips(intel_crtc);
4709 }
4710
4711 static void intel_post_plane_update(struct intel_crtc *crtc)
4712 {
4713 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4714 struct drm_device *dev = crtc->base.dev;
4715 struct drm_i915_private *dev_priv = dev->dev_private;
4716 struct drm_plane *plane;
4717
4718 if (atomic->wait_vblank)
4719 intel_wait_for_vblank(dev, crtc->pipe);
4720
4721 intel_frontbuffer_flip(dev, atomic->fb_bits);
4722
4723 if (atomic->disable_cxsr)
4724 crtc->wm.cxsr_allowed = true;
4725
4726 if (crtc->atomic.update_wm_post)
4727 intel_update_watermarks(&crtc->base);
4728
4729 if (atomic->update_fbc)
4730 intel_fbc_update(dev_priv);
4731
4732 if (atomic->post_enable_primary)
4733 intel_post_enable_primary(&crtc->base);
4734
4735 drm_for_each_plane_mask(plane, dev, atomic->update_sprite_watermarks)
4736 intel_update_sprite_watermarks(plane, &crtc->base,
4737 0, 0, 0, false, false);
4738
4739 memset(atomic, 0, sizeof(*atomic));
4740 }
4741
4742 static void intel_pre_plane_update(struct intel_crtc *crtc)
4743 {
4744 struct drm_device *dev = crtc->base.dev;
4745 struct drm_i915_private *dev_priv = dev->dev_private;
4746 struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
4747 struct drm_plane *p;
4748
4749 /* Track fb's for any planes being disabled */
4750 drm_for_each_plane_mask(p, dev, atomic->disabled_planes) {
4751 struct intel_plane *plane = to_intel_plane(p);
4752
4753 mutex_lock(&dev->struct_mutex);
4754 i915_gem_track_fb(intel_fb_obj(plane->base.fb), NULL,
4755 plane->frontbuffer_bit);
4756 mutex_unlock(&dev->struct_mutex);
4757 }
4758
4759 if (atomic->wait_for_flips)
4760 intel_crtc_wait_for_pending_flips(&crtc->base);
4761
4762 if (atomic->disable_fbc)
4763 intel_fbc_disable_crtc(crtc);
4764
4765 if (crtc->atomic.disable_ips)
4766 hsw_disable_ips(crtc);
4767
4768 if (atomic->pre_disable_primary)
4769 intel_pre_disable_primary(&crtc->base);
4770
4771 if (atomic->disable_cxsr) {
4772 crtc->wm.cxsr_allowed = false;
4773 intel_set_memory_cxsr(dev_priv, false);
4774 }
4775 }
4776
4777 static void intel_crtc_disable_planes(struct drm_crtc *crtc, unsigned plane_mask)
4778 {
4779 struct drm_device *dev = crtc->dev;
4780 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4781 struct drm_plane *p;
4782 int pipe = intel_crtc->pipe;
4783
4784 intel_crtc_dpms_overlay_disable(intel_crtc);
4785
4786 drm_for_each_plane_mask(p, dev, plane_mask)
4787 to_intel_plane(p)->disable_plane(p, crtc);
4788
4789 /*
4790 * FIXME: Once we grow proper nuclear flip support out of this we need
4791 * to compute the mask of flip planes precisely. For the time being
4792 * consider this a flip to a NULL plane.
4793 */
4794 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
4795 }
4796
4797 static void ironlake_crtc_enable(struct drm_crtc *crtc)
4798 {
4799 struct drm_device *dev = crtc->dev;
4800 struct drm_i915_private *dev_priv = dev->dev_private;
4801 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4802 struct intel_encoder *encoder;
4803 int pipe = intel_crtc->pipe;
4804
4805 if (WARN_ON(intel_crtc->active))
4806 return;
4807
4808 if (intel_crtc->config->has_pch_encoder)
4809 intel_prepare_shared_dpll(intel_crtc);
4810
4811 if (intel_crtc->config->has_dp_encoder)
4812 intel_dp_set_m_n(intel_crtc, M1_N1);
4813
4814 intel_set_pipe_timings(intel_crtc);
4815
4816 if (intel_crtc->config->has_pch_encoder) {
4817 intel_cpu_transcoder_set_m_n(intel_crtc,
4818 &intel_crtc->config->fdi_m_n, NULL);
4819 }
4820
4821 ironlake_set_pipeconf(crtc);
4822
4823 intel_crtc->active = true;
4824
4825 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4826 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
4827
4828 for_each_encoder_on_crtc(dev, crtc, encoder)
4829 if (encoder->pre_enable)
4830 encoder->pre_enable(encoder);
4831
4832 if (intel_crtc->config->has_pch_encoder) {
4833 /* Note: FDI PLL enabling _must_ be done before we enable the
4834 * cpu pipes, hence this is separate from all the other fdi/pch
4835 * enabling. */
4836 ironlake_fdi_pll_enable(intel_crtc);
4837 } else {
4838 assert_fdi_tx_disabled(dev_priv, pipe);
4839 assert_fdi_rx_disabled(dev_priv, pipe);
4840 }
4841
4842 ironlake_pfit_enable(intel_crtc);
4843
4844 /*
4845 * On ILK+ LUT must be loaded before the pipe is running but with
4846 * clocks enabled
4847 */
4848 intel_crtc_load_lut(crtc);
4849
4850 intel_update_watermarks(crtc);
4851 intel_enable_pipe(intel_crtc);
4852
4853 if (intel_crtc->config->has_pch_encoder)
4854 ironlake_pch_enable(crtc);
4855
4856 assert_vblank_disabled(crtc);
4857 drm_crtc_vblank_on(crtc);
4858
4859 for_each_encoder_on_crtc(dev, crtc, encoder)
4860 encoder->enable(encoder);
4861
4862 if (HAS_PCH_CPT(dev))
4863 cpt_verify_modeset(dev, intel_crtc->pipe);
4864 }
4865
4866 /* IPS only exists on ULT machines and is tied to pipe A. */
4867 static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4868 {
4869 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
4870 }
4871
4872 static void haswell_crtc_enable(struct drm_crtc *crtc)
4873 {
4874 struct drm_device *dev = crtc->dev;
4875 struct drm_i915_private *dev_priv = dev->dev_private;
4876 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4877 struct intel_encoder *encoder;
4878 int pipe = intel_crtc->pipe, hsw_workaround_pipe;
4879 struct intel_crtc_state *pipe_config =
4880 to_intel_crtc_state(crtc->state);
4881
4882 if (WARN_ON(intel_crtc->active))
4883 return;
4884
4885 if (intel_crtc_to_shared_dpll(intel_crtc))
4886 intel_enable_shared_dpll(intel_crtc);
4887
4888 if (intel_crtc->config->has_dp_encoder)
4889 intel_dp_set_m_n(intel_crtc, M1_N1);
4890
4891 intel_set_pipe_timings(intel_crtc);
4892
4893 if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
4894 I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
4895 intel_crtc->config->pixel_multiplier - 1);
4896 }
4897
4898 if (intel_crtc->config->has_pch_encoder) {
4899 intel_cpu_transcoder_set_m_n(intel_crtc,
4900 &intel_crtc->config->fdi_m_n, NULL);
4901 }
4902
4903 haswell_set_pipeconf(crtc);
4904
4905 intel_set_pipe_csc(crtc);
4906
4907 intel_crtc->active = true;
4908
4909 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4910 for_each_encoder_on_crtc(dev, crtc, encoder)
4911 if (encoder->pre_enable)
4912 encoder->pre_enable(encoder);
4913
4914 if (intel_crtc->config->has_pch_encoder) {
4915 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
4916 true);
4917 dev_priv->display.fdi_link_train(crtc);
4918 }
4919
4920 intel_ddi_enable_pipe_clock(intel_crtc);
4921
4922 if (INTEL_INFO(dev)->gen >= 9)
4923 skylake_pfit_enable(intel_crtc);
4924 else
4925 ironlake_pfit_enable(intel_crtc);
4926
4927 /*
4928 * On ILK+ LUT must be loaded before the pipe is running but with
4929 * clocks enabled
4930 */
4931 intel_crtc_load_lut(crtc);
4932
4933 intel_ddi_set_pipe_settings(crtc);
4934 intel_ddi_enable_transcoder_func(crtc);
4935
4936 intel_update_watermarks(crtc);
4937 intel_enable_pipe(intel_crtc);
4938
4939 if (intel_crtc->config->has_pch_encoder)
4940 lpt_pch_enable(crtc);
4941
4942 if (intel_crtc->config->dp_encoder_is_mst)
4943 intel_ddi_set_vc_payload_alloc(crtc, true);
4944
4945 assert_vblank_disabled(crtc);
4946 drm_crtc_vblank_on(crtc);
4947
4948 for_each_encoder_on_crtc(dev, crtc, encoder) {
4949 encoder->enable(encoder);
4950 intel_opregion_notify_encoder(encoder, true);
4951 }
4952
4953 /* If we change the relative order between pipe/planes enabling, we need
4954 * to change the workaround. */
4955 hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
4956 if (IS_HASWELL(dev) && hsw_workaround_pipe != INVALID_PIPE) {
4957 intel_wait_for_vblank(dev, hsw_workaround_pipe);
4958 intel_wait_for_vblank(dev, hsw_workaround_pipe);
4959 }
4960 }
4961
4962 static void ironlake_pfit_disable(struct intel_crtc *crtc)
4963 {
4964 struct drm_device *dev = crtc->base.dev;
4965 struct drm_i915_private *dev_priv = dev->dev_private;
4966 int pipe = crtc->pipe;
4967
4968 /* To avoid upsetting the power well on haswell only disable the pfit if
4969 * it's in use. The hw state code will make sure we get this right. */
4970 if (crtc->config->pch_pfit.enabled) {
4971 I915_WRITE(PF_CTL(pipe), 0);
4972 I915_WRITE(PF_WIN_POS(pipe), 0);
4973 I915_WRITE(PF_WIN_SZ(pipe), 0);
4974 }
4975 }
4976
4977 static void ironlake_crtc_disable(struct drm_crtc *crtc)
4978 {
4979 struct drm_device *dev = crtc->dev;
4980 struct drm_i915_private *dev_priv = dev->dev_private;
4981 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4982 struct intel_encoder *encoder;
4983 int pipe = intel_crtc->pipe;
4984 u32 reg, temp;
4985
4986 for_each_encoder_on_crtc(dev, crtc, encoder)
4987 encoder->disable(encoder);
4988
4989 drm_crtc_vblank_off(crtc);
4990 assert_vblank_disabled(crtc);
4991
4992 if (intel_crtc->config->has_pch_encoder)
4993 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
4994
4995 intel_disable_pipe(intel_crtc);
4996
4997 ironlake_pfit_disable(intel_crtc);
4998
4999 if (intel_crtc->config->has_pch_encoder)
5000 ironlake_fdi_disable(crtc);
5001
5002 for_each_encoder_on_crtc(dev, crtc, encoder)
5003 if (encoder->post_disable)
5004 encoder->post_disable(encoder);
5005
5006 if (intel_crtc->config->has_pch_encoder) {
5007 ironlake_disable_pch_transcoder(dev_priv, pipe);
5008
5009 if (HAS_PCH_CPT(dev)) {
5010 /* disable TRANS_DP_CTL */
5011 reg = TRANS_DP_CTL(pipe);
5012 temp = I915_READ(reg);
5013 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
5014 TRANS_DP_PORT_SEL_MASK);
5015 temp |= TRANS_DP_PORT_SEL_NONE;
5016 I915_WRITE(reg, temp);
5017
5018 /* disable DPLL_SEL */
5019 temp = I915_READ(PCH_DPLL_SEL);
5020 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
5021 I915_WRITE(PCH_DPLL_SEL, temp);
5022 }
5023
5024 ironlake_fdi_pll_disable(intel_crtc);
5025 }
5026
5027 intel_crtc->active = false;
5028 intel_update_watermarks(crtc);
5029 }
5030
5031 static void haswell_crtc_disable(struct drm_crtc *crtc)
5032 {
5033 struct drm_device *dev = crtc->dev;
5034 struct drm_i915_private *dev_priv = dev->dev_private;
5035 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5036 struct intel_encoder *encoder;
5037 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
5038
5039 for_each_encoder_on_crtc(dev, crtc, encoder) {
5040 intel_opregion_notify_encoder(encoder, false);
5041 encoder->disable(encoder);
5042 }
5043
5044 drm_crtc_vblank_off(crtc);
5045 assert_vblank_disabled(crtc);
5046
5047 if (intel_crtc->config->has_pch_encoder)
5048 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5049 false);
5050 intel_disable_pipe(intel_crtc);
5051
5052 if (intel_crtc->config->dp_encoder_is_mst)
5053 intel_ddi_set_vc_payload_alloc(crtc, false);
5054
5055 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
5056
5057 if (INTEL_INFO(dev)->gen >= 9)
5058 skylake_scaler_disable(intel_crtc);
5059 else
5060 ironlake_pfit_disable(intel_crtc);
5061
5062 intel_ddi_disable_pipe_clock(intel_crtc);
5063
5064 if (intel_crtc->config->has_pch_encoder) {
5065 lpt_disable_pch_transcoder(dev_priv);
5066 intel_ddi_fdi_disable(crtc);
5067 }
5068
5069 for_each_encoder_on_crtc(dev, crtc, encoder)
5070 if (encoder->post_disable)
5071 encoder->post_disable(encoder);
5072
5073 intel_crtc->active = false;
5074 intel_update_watermarks(crtc);
5075 }
5076
5077 static void i9xx_pfit_enable(struct intel_crtc *crtc)
5078 {
5079 struct drm_device *dev = crtc->base.dev;
5080 struct drm_i915_private *dev_priv = dev->dev_private;
5081 struct intel_crtc_state *pipe_config = crtc->config;
5082
5083 if (!pipe_config->gmch_pfit.control)
5084 return;
5085
5086 /*
5087 * The panel fitter should only be adjusted whilst the pipe is disabled,
5088 * according to register description and PRM.
5089 */
5090 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
5091 assert_pipe_disabled(dev_priv, crtc->pipe);
5092
5093 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
5094 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
5095
5096 /* Border color in case we don't scale up to the full screen. Black by
5097 * default, change to something else for debugging. */
5098 I915_WRITE(BCLRPAT(crtc->pipe), 0);
5099 }
5100
5101 static enum intel_display_power_domain port_to_power_domain(enum port port)
5102 {
5103 switch (port) {
5104 case PORT_A:
5105 return POWER_DOMAIN_PORT_DDI_A_4_LANES;
5106 case PORT_B:
5107 return POWER_DOMAIN_PORT_DDI_B_4_LANES;
5108 case PORT_C:
5109 return POWER_DOMAIN_PORT_DDI_C_4_LANES;
5110 case PORT_D:
5111 return POWER_DOMAIN_PORT_DDI_D_4_LANES;
5112 case PORT_E:
5113 return POWER_DOMAIN_PORT_DDI_E_2_LANES;
5114 default:
5115 WARN_ON_ONCE(1);
5116 return POWER_DOMAIN_PORT_OTHER;
5117 }
5118 }
5119
5120 #define for_each_power_domain(domain, mask) \
5121 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
5122 if ((1 << (domain)) & (mask))
5123
5124 enum intel_display_power_domain
5125 intel_display_port_power_domain(struct intel_encoder *intel_encoder)
5126 {
5127 struct drm_device *dev = intel_encoder->base.dev;
5128 struct intel_digital_port *intel_dig_port;
5129
5130 switch (intel_encoder->type) {
5131 case INTEL_OUTPUT_UNKNOWN:
5132 /* Only DDI platforms should ever use this output type */
5133 WARN_ON_ONCE(!HAS_DDI(dev));
5134 case INTEL_OUTPUT_DISPLAYPORT:
5135 case INTEL_OUTPUT_HDMI:
5136 case INTEL_OUTPUT_EDP:
5137 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
5138 return port_to_power_domain(intel_dig_port->port);
5139 case INTEL_OUTPUT_DP_MST:
5140 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5141 return port_to_power_domain(intel_dig_port->port);
5142 case INTEL_OUTPUT_ANALOG:
5143 return POWER_DOMAIN_PORT_CRT;
5144 case INTEL_OUTPUT_DSI:
5145 return POWER_DOMAIN_PORT_DSI;
5146 default:
5147 return POWER_DOMAIN_PORT_OTHER;
5148 }
5149 }
5150
5151 static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
5152 {
5153 struct drm_device *dev = crtc->dev;
5154 struct intel_encoder *intel_encoder;
5155 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5156 enum pipe pipe = intel_crtc->pipe;
5157 unsigned long mask;
5158 enum transcoder transcoder;
5159
5160 if (!crtc->state->active)
5161 return 0;
5162
5163 transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
5164
5165 mask = BIT(POWER_DOMAIN_PIPE(pipe));
5166 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
5167 if (intel_crtc->config->pch_pfit.enabled ||
5168 intel_crtc->config->pch_pfit.force_thru)
5169 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
5170
5171 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
5172 mask |= BIT(intel_display_port_power_domain(intel_encoder));
5173
5174 return mask;
5175 }
5176
5177 static unsigned long modeset_get_crtc_power_domains(struct drm_crtc *crtc)
5178 {
5179 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
5180 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5181 enum intel_display_power_domain domain;
5182 unsigned long domains, new_domains, old_domains;
5183
5184 old_domains = intel_crtc->enabled_power_domains;
5185 intel_crtc->enabled_power_domains = new_domains = get_crtc_power_domains(crtc);
5186
5187 domains = new_domains & ~old_domains;
5188
5189 for_each_power_domain(domain, domains)
5190 intel_display_power_get(dev_priv, domain);
5191
5192 return old_domains & ~new_domains;
5193 }
5194
5195 static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
5196 unsigned long domains)
5197 {
5198 enum intel_display_power_domain domain;
5199
5200 for_each_power_domain(domain, domains)
5201 intel_display_power_put(dev_priv, domain);
5202 }
5203
5204 static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
5205 {
5206 struct drm_device *dev = state->dev;
5207 struct drm_i915_private *dev_priv = dev->dev_private;
5208 unsigned long put_domains[I915_MAX_PIPES] = {};
5209 struct drm_crtc_state *crtc_state;
5210 struct drm_crtc *crtc;
5211 int i;
5212
5213 for_each_crtc_in_state(state, crtc, crtc_state, i) {
5214 if (needs_modeset(crtc->state))
5215 put_domains[to_intel_crtc(crtc)->pipe] =
5216 modeset_get_crtc_power_domains(crtc);
5217 }
5218
5219 if (dev_priv->display.modeset_commit_cdclk) {
5220 unsigned int cdclk = to_intel_atomic_state(state)->cdclk;
5221
5222 if (cdclk != dev_priv->cdclk_freq &&
5223 !WARN_ON(!state->allow_modeset))
5224 dev_priv->display.modeset_commit_cdclk(state);
5225 }
5226
5227 for (i = 0; i < I915_MAX_PIPES; i++)
5228 if (put_domains[i])
5229 modeset_put_power_domains(dev_priv, put_domains[i]);
5230 }
5231
5232 static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
5233 {
5234 int max_cdclk_freq = dev_priv->max_cdclk_freq;
5235
5236 if (INTEL_INFO(dev_priv)->gen >= 9 ||
5237 IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
5238 return max_cdclk_freq;
5239 else if (IS_CHERRYVIEW(dev_priv))
5240 return max_cdclk_freq*95/100;
5241 else if (INTEL_INFO(dev_priv)->gen < 4)
5242 return 2*max_cdclk_freq*90/100;
5243 else
5244 return max_cdclk_freq*90/100;
5245 }
5246
5247 static void intel_update_max_cdclk(struct drm_device *dev)
5248 {
5249 struct drm_i915_private *dev_priv = dev->dev_private;
5250
5251 if (IS_SKYLAKE(dev)) {
5252 u32 limit = I915_READ(SKL_DFSM) & SKL_DFSM_CDCLK_LIMIT_MASK;
5253
5254 if (limit == SKL_DFSM_CDCLK_LIMIT_675)
5255 dev_priv->max_cdclk_freq = 675000;
5256 else if (limit == SKL_DFSM_CDCLK_LIMIT_540)
5257 dev_priv->max_cdclk_freq = 540000;
5258 else if (limit == SKL_DFSM_CDCLK_LIMIT_450)
5259 dev_priv->max_cdclk_freq = 450000;
5260 else
5261 dev_priv->max_cdclk_freq = 337500;
5262 } else if (IS_BROADWELL(dev)) {
5263 /*
5264 * FIXME with extra cooling we can allow
5265 * 540 MHz for ULX and 675 Mhz for ULT.
5266 * How can we know if extra cooling is
5267 * available? PCI ID, VTB, something else?
5268 */
5269 if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
5270 dev_priv->max_cdclk_freq = 450000;
5271 else if (IS_BDW_ULX(dev))
5272 dev_priv->max_cdclk_freq = 450000;
5273 else if (IS_BDW_ULT(dev))
5274 dev_priv->max_cdclk_freq = 540000;
5275 else
5276 dev_priv->max_cdclk_freq = 675000;
5277 } else if (IS_CHERRYVIEW(dev)) {
5278 dev_priv->max_cdclk_freq = 320000;
5279 } else if (IS_VALLEYVIEW(dev)) {
5280 dev_priv->max_cdclk_freq = 400000;
5281 } else {
5282 /* otherwise assume cdclk is fixed */
5283 dev_priv->max_cdclk_freq = dev_priv->cdclk_freq;
5284 }
5285
5286 dev_priv->max_dotclk_freq = intel_compute_max_dotclk(dev_priv);
5287
5288 DRM_DEBUG_DRIVER("Max CD clock rate: %d kHz\n",
5289 dev_priv->max_cdclk_freq);
5290
5291 DRM_DEBUG_DRIVER("Max dotclock rate: %d kHz\n",
5292 dev_priv->max_dotclk_freq);
5293 }
5294
5295 static void intel_update_cdclk(struct drm_device *dev)
5296 {
5297 struct drm_i915_private *dev_priv = dev->dev_private;
5298
5299 dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
5300 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
5301 dev_priv->cdclk_freq);
5302
5303 /*
5304 * Program the gmbus_freq based on the cdclk frequency.
5305 * BSpec erroneously claims we should aim for 4MHz, but
5306 * in fact 1MHz is the correct frequency.
5307 */
5308 if (IS_VALLEYVIEW(dev)) {
5309 /*
5310 * Program the gmbus_freq based on the cdclk frequency.
5311 * BSpec erroneously claims we should aim for 4MHz, but
5312 * in fact 1MHz is the correct frequency.
5313 */
5314 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
5315 }
5316
5317 if (dev_priv->max_cdclk_freq == 0)
5318 intel_update_max_cdclk(dev);
5319 }
5320
5321 static void broxton_set_cdclk(struct drm_device *dev, int frequency)
5322 {
5323 struct drm_i915_private *dev_priv = dev->dev_private;
5324 uint32_t divider;
5325 uint32_t ratio;
5326 uint32_t current_freq;
5327 int ret;
5328
5329 /* frequency = 19.2MHz * ratio / 2 / div{1,1.5,2,4} */
5330 switch (frequency) {
5331 case 144000:
5332 divider = BXT_CDCLK_CD2X_DIV_SEL_4;
5333 ratio = BXT_DE_PLL_RATIO(60);
5334 break;
5335 case 288000:
5336 divider = BXT_CDCLK_CD2X_DIV_SEL_2;
5337 ratio = BXT_DE_PLL_RATIO(60);
5338 break;
5339 case 384000:
5340 divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
5341 ratio = BXT_DE_PLL_RATIO(60);
5342 break;
5343 case 576000:
5344 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5345 ratio = BXT_DE_PLL_RATIO(60);
5346 break;
5347 case 624000:
5348 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5349 ratio = BXT_DE_PLL_RATIO(65);
5350 break;
5351 case 19200:
5352 /*
5353 * Bypass frequency with DE PLL disabled. Init ratio, divider
5354 * to suppress GCC warning.
5355 */
5356 ratio = 0;
5357 divider = 0;
5358 break;
5359 default:
5360 DRM_ERROR("unsupported CDCLK freq %d", frequency);
5361
5362 return;
5363 }
5364
5365 mutex_lock(&dev_priv->rps.hw_lock);
5366 /* Inform power controller of upcoming frequency change */
5367 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5368 0x80000000);
5369 mutex_unlock(&dev_priv->rps.hw_lock);
5370
5371 if (ret) {
5372 DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
5373 ret, frequency);
5374 return;
5375 }
5376
5377 current_freq = I915_READ(CDCLK_CTL) & CDCLK_FREQ_DECIMAL_MASK;
5378 /* convert from .1 fixpoint MHz with -1MHz offset to kHz */
5379 current_freq = current_freq * 500 + 1000;
5380
5381 /*
5382 * DE PLL has to be disabled when
5383 * - setting to 19.2MHz (bypass, PLL isn't used)
5384 * - before setting to 624MHz (PLL needs toggling)
5385 * - before setting to any frequency from 624MHz (PLL needs toggling)
5386 */
5387 if (frequency == 19200 || frequency == 624000 ||
5388 current_freq == 624000) {
5389 I915_WRITE(BXT_DE_PLL_ENABLE, ~BXT_DE_PLL_PLL_ENABLE);
5390 /* Timeout 200us */
5391 if (wait_for(!(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK),
5392 1))
5393 DRM_ERROR("timout waiting for DE PLL unlock\n");
5394 }
5395
5396 if (frequency != 19200) {
5397 uint32_t val;
5398
5399 val = I915_READ(BXT_DE_PLL_CTL);
5400 val &= ~BXT_DE_PLL_RATIO_MASK;
5401 val |= ratio;
5402 I915_WRITE(BXT_DE_PLL_CTL, val);
5403
5404 I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
5405 /* Timeout 200us */
5406 if (wait_for(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK, 1))
5407 DRM_ERROR("timeout waiting for DE PLL lock\n");
5408
5409 val = I915_READ(CDCLK_CTL);
5410 val &= ~BXT_CDCLK_CD2X_DIV_SEL_MASK;
5411 val |= divider;
5412 /*
5413 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5414 * enable otherwise.
5415 */
5416 val &= ~BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5417 if (frequency >= 500000)
5418 val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5419
5420 val &= ~CDCLK_FREQ_DECIMAL_MASK;
5421 /* convert from kHz to .1 fixpoint MHz with -1MHz offset */
5422 val |= (frequency - 1000) / 500;
5423 I915_WRITE(CDCLK_CTL, val);
5424 }
5425
5426 mutex_lock(&dev_priv->rps.hw_lock);
5427 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5428 DIV_ROUND_UP(frequency, 25000));
5429 mutex_unlock(&dev_priv->rps.hw_lock);
5430
5431 if (ret) {
5432 DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
5433 ret, frequency);
5434 return;
5435 }
5436
5437 intel_update_cdclk(dev);
5438 }
5439
5440 void broxton_init_cdclk(struct drm_device *dev)
5441 {
5442 struct drm_i915_private *dev_priv = dev->dev_private;
5443 uint32_t val;
5444
5445 /*
5446 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
5447 * or else the reset will hang because there is no PCH to respond.
5448 * Move the handshake programming to initialization sequence.
5449 * Previously was left up to BIOS.
5450 */
5451 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5452 val &= ~RESET_PCH_HANDSHAKE_ENABLE;
5453 I915_WRITE(HSW_NDE_RSTWRN_OPT, val);
5454
5455 /* Enable PG1 for cdclk */
5456 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5457
5458 /* check if cd clock is enabled */
5459 if (I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_PLL_ENABLE) {
5460 DRM_DEBUG_KMS("Display already initialized\n");
5461 return;
5462 }
5463
5464 /*
5465 * FIXME:
5466 * - The initial CDCLK needs to be read from VBT.
5467 * Need to make this change after VBT has changes for BXT.
5468 * - check if setting the max (or any) cdclk freq is really necessary
5469 * here, it belongs to modeset time
5470 */
5471 broxton_set_cdclk(dev, 624000);
5472
5473 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5474 POSTING_READ(DBUF_CTL);
5475
5476 udelay(10);
5477
5478 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5479 DRM_ERROR("DBuf power enable timeout!\n");
5480 }
5481
5482 void broxton_uninit_cdclk(struct drm_device *dev)
5483 {
5484 struct drm_i915_private *dev_priv = dev->dev_private;
5485
5486 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5487 POSTING_READ(DBUF_CTL);
5488
5489 udelay(10);
5490
5491 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5492 DRM_ERROR("DBuf power disable timeout!\n");
5493
5494 /* Set minimum (bypass) frequency, in effect turning off the DE PLL */
5495 broxton_set_cdclk(dev, 19200);
5496
5497 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5498 }
5499
5500 static const struct skl_cdclk_entry {
5501 unsigned int freq;
5502 unsigned int vco;
5503 } skl_cdclk_frequencies[] = {
5504 { .freq = 308570, .vco = 8640 },
5505 { .freq = 337500, .vco = 8100 },
5506 { .freq = 432000, .vco = 8640 },
5507 { .freq = 450000, .vco = 8100 },
5508 { .freq = 540000, .vco = 8100 },
5509 { .freq = 617140, .vco = 8640 },
5510 { .freq = 675000, .vco = 8100 },
5511 };
5512
5513 static unsigned int skl_cdclk_decimal(unsigned int freq)
5514 {
5515 return (freq - 1000) / 500;
5516 }
5517
5518 static unsigned int skl_cdclk_get_vco(unsigned int freq)
5519 {
5520 unsigned int i;
5521
5522 for (i = 0; i < ARRAY_SIZE(skl_cdclk_frequencies); i++) {
5523 const struct skl_cdclk_entry *e = &skl_cdclk_frequencies[i];
5524
5525 if (e->freq == freq)
5526 return e->vco;
5527 }
5528
5529 return 8100;
5530 }
5531
5532 static void
5533 skl_dpll0_enable(struct drm_i915_private *dev_priv, unsigned int required_vco)
5534 {
5535 unsigned int min_freq;
5536 u32 val;
5537
5538 /* select the minimum CDCLK before enabling DPLL 0 */
5539 val = I915_READ(CDCLK_CTL);
5540 val &= ~CDCLK_FREQ_SEL_MASK | ~CDCLK_FREQ_DECIMAL_MASK;
5541 val |= CDCLK_FREQ_337_308;
5542
5543 if (required_vco == 8640)
5544 min_freq = 308570;
5545 else
5546 min_freq = 337500;
5547
5548 val = CDCLK_FREQ_337_308 | skl_cdclk_decimal(min_freq);
5549
5550 I915_WRITE(CDCLK_CTL, val);
5551 POSTING_READ(CDCLK_CTL);
5552
5553 /*
5554 * We always enable DPLL0 with the lowest link rate possible, but still
5555 * taking into account the VCO required to operate the eDP panel at the
5556 * desired frequency. The usual DP link rates operate with a VCO of
5557 * 8100 while the eDP 1.4 alternate link rates need a VCO of 8640.
5558 * The modeset code is responsible for the selection of the exact link
5559 * rate later on, with the constraint of choosing a frequency that
5560 * works with required_vco.
5561 */
5562 val = I915_READ(DPLL_CTRL1);
5563
5564 val &= ~(DPLL_CTRL1_HDMI_MODE(SKL_DPLL0) | DPLL_CTRL1_SSC(SKL_DPLL0) |
5565 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0));
5566 val |= DPLL_CTRL1_OVERRIDE(SKL_DPLL0);
5567 if (required_vco == 8640)
5568 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_1080,
5569 SKL_DPLL0);
5570 else
5571 val |= DPLL_CTRL1_LINK_RATE(DPLL_CTRL1_LINK_RATE_810,
5572 SKL_DPLL0);
5573
5574 I915_WRITE(DPLL_CTRL1, val);
5575 POSTING_READ(DPLL_CTRL1);
5576
5577 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) | LCPLL_PLL_ENABLE);
5578
5579 if (wait_for(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK, 5))
5580 DRM_ERROR("DPLL0 not locked\n");
5581 }
5582
5583 static bool skl_cdclk_pcu_ready(struct drm_i915_private *dev_priv)
5584 {
5585 int ret;
5586 u32 val;
5587
5588 /* inform PCU we want to change CDCLK */
5589 val = SKL_CDCLK_PREPARE_FOR_CHANGE;
5590 mutex_lock(&dev_priv->rps.hw_lock);
5591 ret = sandybridge_pcode_read(dev_priv, SKL_PCODE_CDCLK_CONTROL, &val);
5592 mutex_unlock(&dev_priv->rps.hw_lock);
5593
5594 return ret == 0 && (val & SKL_CDCLK_READY_FOR_CHANGE);
5595 }
5596
5597 static bool skl_cdclk_wait_for_pcu_ready(struct drm_i915_private *dev_priv)
5598 {
5599 unsigned int i;
5600
5601 for (i = 0; i < 15; i++) {
5602 if (skl_cdclk_pcu_ready(dev_priv))
5603 return true;
5604 udelay(10);
5605 }
5606
5607 return false;
5608 }
5609
5610 static void skl_set_cdclk(struct drm_i915_private *dev_priv, unsigned int freq)
5611 {
5612 struct drm_device *dev = dev_priv->dev;
5613 u32 freq_select, pcu_ack;
5614
5615 DRM_DEBUG_DRIVER("Changing CDCLK to %dKHz\n", freq);
5616
5617 if (!skl_cdclk_wait_for_pcu_ready(dev_priv)) {
5618 DRM_ERROR("failed to inform PCU about cdclk change\n");
5619 return;
5620 }
5621
5622 /* set CDCLK_CTL */
5623 switch(freq) {
5624 case 450000:
5625 case 432000:
5626 freq_select = CDCLK_FREQ_450_432;
5627 pcu_ack = 1;
5628 break;
5629 case 540000:
5630 freq_select = CDCLK_FREQ_540;
5631 pcu_ack = 2;
5632 break;
5633 case 308570:
5634 case 337500:
5635 default:
5636 freq_select = CDCLK_FREQ_337_308;
5637 pcu_ack = 0;
5638 break;
5639 case 617140:
5640 case 675000:
5641 freq_select = CDCLK_FREQ_675_617;
5642 pcu_ack = 3;
5643 break;
5644 }
5645
5646 I915_WRITE(CDCLK_CTL, freq_select | skl_cdclk_decimal(freq));
5647 POSTING_READ(CDCLK_CTL);
5648
5649 /* inform PCU of the change */
5650 mutex_lock(&dev_priv->rps.hw_lock);
5651 sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, pcu_ack);
5652 mutex_unlock(&dev_priv->rps.hw_lock);
5653
5654 intel_update_cdclk(dev);
5655 }
5656
5657 void skl_uninit_cdclk(struct drm_i915_private *dev_priv)
5658 {
5659 /* disable DBUF power */
5660 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
5661 POSTING_READ(DBUF_CTL);
5662
5663 udelay(10);
5664
5665 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5666 DRM_ERROR("DBuf power disable timeout\n");
5667
5668 /* disable DPLL0 */
5669 I915_WRITE(LCPLL1_CTL, I915_READ(LCPLL1_CTL) & ~LCPLL_PLL_ENABLE);
5670 if (wait_for(!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_LOCK), 1))
5671 DRM_ERROR("Couldn't disable DPLL0\n");
5672
5673 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5674 }
5675
5676 void skl_init_cdclk(struct drm_i915_private *dev_priv)
5677 {
5678 u32 val;
5679 unsigned int required_vco;
5680
5681 /* enable PCH reset handshake */
5682 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5683 I915_WRITE(HSW_NDE_RSTWRN_OPT, val | RESET_PCH_HANDSHAKE_ENABLE);
5684
5685 /* enable PG1 and Misc I/O */
5686 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5687
5688 /* DPLL0 not enabled (happens on early BIOS versions) */
5689 if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) {
5690 /* enable DPLL0 */
5691 required_vco = skl_cdclk_get_vco(dev_priv->skl_boot_cdclk);
5692 skl_dpll0_enable(dev_priv, required_vco);
5693 }
5694
5695 /* set CDCLK to the frequency the BIOS chose */
5696 skl_set_cdclk(dev_priv, dev_priv->skl_boot_cdclk);
5697
5698 /* enable DBUF power */
5699 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
5700 POSTING_READ(DBUF_CTL);
5701
5702 udelay(10);
5703
5704 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5705 DRM_ERROR("DBuf power enable timeout\n");
5706 }
5707
5708 /* returns HPLL frequency in kHz */
5709 static int valleyview_get_vco(struct drm_i915_private *dev_priv)
5710 {
5711 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
5712
5713 /* Obtain SKU information */
5714 mutex_lock(&dev_priv->sb_lock);
5715 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
5716 CCK_FUSE_HPLL_FREQ_MASK;
5717 mutex_unlock(&dev_priv->sb_lock);
5718
5719 return vco_freq[hpll_freq] * 1000;
5720 }
5721
5722 /* Adjust CDclk dividers to allow high res or save power if possible */
5723 static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
5724 {
5725 struct drm_i915_private *dev_priv = dev->dev_private;
5726 u32 val, cmd;
5727
5728 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5729 != dev_priv->cdclk_freq);
5730
5731 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
5732 cmd = 2;
5733 else if (cdclk == 266667)
5734 cmd = 1;
5735 else
5736 cmd = 0;
5737
5738 mutex_lock(&dev_priv->rps.hw_lock);
5739 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5740 val &= ~DSPFREQGUAR_MASK;
5741 val |= (cmd << DSPFREQGUAR_SHIFT);
5742 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5743 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5744 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
5745 50)) {
5746 DRM_ERROR("timed out waiting for CDclk change\n");
5747 }
5748 mutex_unlock(&dev_priv->rps.hw_lock);
5749
5750 mutex_lock(&dev_priv->sb_lock);
5751
5752 if (cdclk == 400000) {
5753 u32 divider;
5754
5755 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5756
5757 /* adjust cdclk divider */
5758 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
5759 val &= ~DISPLAY_FREQUENCY_VALUES;
5760 val |= divider;
5761 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
5762
5763 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
5764 DISPLAY_FREQUENCY_STATUS) == (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
5765 50))
5766 DRM_ERROR("timed out waiting for CDclk change\n");
5767 }
5768
5769 /* adjust self-refresh exit latency value */
5770 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
5771 val &= ~0x7f;
5772
5773 /*
5774 * For high bandwidth configs, we set a higher latency in the bunit
5775 * so that the core display fetch happens in time to avoid underruns.
5776 */
5777 if (cdclk == 400000)
5778 val |= 4500 / 250; /* 4.5 usec */
5779 else
5780 val |= 3000 / 250; /* 3.0 usec */
5781 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
5782
5783 mutex_unlock(&dev_priv->sb_lock);
5784
5785 intel_update_cdclk(dev);
5786 }
5787
5788 static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
5789 {
5790 struct drm_i915_private *dev_priv = dev->dev_private;
5791 u32 val, cmd;
5792
5793 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5794 != dev_priv->cdclk_freq);
5795
5796 switch (cdclk) {
5797 case 333333:
5798 case 320000:
5799 case 266667:
5800 case 200000:
5801 break;
5802 default:
5803 MISSING_CASE(cdclk);
5804 return;
5805 }
5806
5807 /*
5808 * Specs are full of misinformation, but testing on actual
5809 * hardware has shown that we just need to write the desired
5810 * CCK divider into the Punit register.
5811 */
5812 cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5813
5814 mutex_lock(&dev_priv->rps.hw_lock);
5815 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5816 val &= ~DSPFREQGUAR_MASK_CHV;
5817 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
5818 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5819 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5820 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
5821 50)) {
5822 DRM_ERROR("timed out waiting for CDclk change\n");
5823 }
5824 mutex_unlock(&dev_priv->rps.hw_lock);
5825
5826 intel_update_cdclk(dev);
5827 }
5828
5829 static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5830 int max_pixclk)
5831 {
5832 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
5833 int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
5834
5835 /*
5836 * Really only a few cases to deal with, as only 4 CDclks are supported:
5837 * 200MHz
5838 * 267MHz
5839 * 320/333MHz (depends on HPLL freq)
5840 * 400MHz (VLV only)
5841 * So we check to see whether we're above 90% (VLV) or 95% (CHV)
5842 * of the lower bin and adjust if needed.
5843 *
5844 * We seem to get an unstable or solid color picture at 200MHz.
5845 * Not sure what's wrong. For now use 200MHz only when all pipes
5846 * are off.
5847 */
5848 if (!IS_CHERRYVIEW(dev_priv) &&
5849 max_pixclk > freq_320*limit/100)
5850 return 400000;
5851 else if (max_pixclk > 266667*limit/100)
5852 return freq_320;
5853 else if (max_pixclk > 0)
5854 return 266667;
5855 else
5856 return 200000;
5857 }
5858
5859 static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
5860 int max_pixclk)
5861 {
5862 /*
5863 * FIXME:
5864 * - remove the guardband, it's not needed on BXT
5865 * - set 19.2MHz bypass frequency if there are no active pipes
5866 */
5867 if (max_pixclk > 576000*9/10)
5868 return 624000;
5869 else if (max_pixclk > 384000*9/10)
5870 return 576000;
5871 else if (max_pixclk > 288000*9/10)
5872 return 384000;
5873 else if (max_pixclk > 144000*9/10)
5874 return 288000;
5875 else
5876 return 144000;
5877 }
5878
5879 /* Compute the max pixel clock for new configuration. Uses atomic state if
5880 * that's non-NULL, look at current state otherwise. */
5881 static int intel_mode_max_pixclk(struct drm_device *dev,
5882 struct drm_atomic_state *state)
5883 {
5884 struct intel_crtc *intel_crtc;
5885 struct intel_crtc_state *crtc_state;
5886 int max_pixclk = 0;
5887
5888 for_each_intel_crtc(dev, intel_crtc) {
5889 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
5890 if (IS_ERR(crtc_state))
5891 return PTR_ERR(crtc_state);
5892
5893 if (!crtc_state->base.enable)
5894 continue;
5895
5896 max_pixclk = max(max_pixclk,
5897 crtc_state->base.adjusted_mode.crtc_clock);
5898 }
5899
5900 return max_pixclk;
5901 }
5902
5903 static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
5904 {
5905 struct drm_device *dev = state->dev;
5906 struct drm_i915_private *dev_priv = dev->dev_private;
5907 int max_pixclk = intel_mode_max_pixclk(dev, state);
5908
5909 if (max_pixclk < 0)
5910 return max_pixclk;
5911
5912 to_intel_atomic_state(state)->cdclk =
5913 valleyview_calc_cdclk(dev_priv, max_pixclk);
5914
5915 return 0;
5916 }
5917
5918 static int broxton_modeset_calc_cdclk(struct drm_atomic_state *state)
5919 {
5920 struct drm_device *dev = state->dev;
5921 struct drm_i915_private *dev_priv = dev->dev_private;
5922 int max_pixclk = intel_mode_max_pixclk(dev, state);
5923
5924 if (max_pixclk < 0)
5925 return max_pixclk;
5926
5927 to_intel_atomic_state(state)->cdclk =
5928 broxton_calc_cdclk(dev_priv, max_pixclk);
5929
5930 return 0;
5931 }
5932
5933 static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
5934 {
5935 unsigned int credits, default_credits;
5936
5937 if (IS_CHERRYVIEW(dev_priv))
5938 default_credits = PFI_CREDIT(12);
5939 else
5940 default_credits = PFI_CREDIT(8);
5941
5942 if (DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 1000) >= dev_priv->rps.cz_freq) {
5943 /* CHV suggested value is 31 or 63 */
5944 if (IS_CHERRYVIEW(dev_priv))
5945 credits = PFI_CREDIT_63;
5946 else
5947 credits = PFI_CREDIT(15);
5948 } else {
5949 credits = default_credits;
5950 }
5951
5952 /*
5953 * WA - write default credits before re-programming
5954 * FIXME: should we also set the resend bit here?
5955 */
5956 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5957 default_credits);
5958
5959 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5960 credits | PFI_CREDIT_RESEND);
5961
5962 /*
5963 * FIXME is this guaranteed to clear
5964 * immediately or should we poll for it?
5965 */
5966 WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
5967 }
5968
5969 static void valleyview_modeset_commit_cdclk(struct drm_atomic_state *old_state)
5970 {
5971 struct drm_device *dev = old_state->dev;
5972 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
5973 struct drm_i915_private *dev_priv = dev->dev_private;
5974
5975 /*
5976 * FIXME: We can end up here with all power domains off, yet
5977 * with a CDCLK frequency other than the minimum. To account
5978 * for this take the PIPE-A power domain, which covers the HW
5979 * blocks needed for the following programming. This can be
5980 * removed once it's guaranteed that we get here either with
5981 * the minimum CDCLK set, or the required power domains
5982 * enabled.
5983 */
5984 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
5985
5986 if (IS_CHERRYVIEW(dev))
5987 cherryview_set_cdclk(dev, req_cdclk);
5988 else
5989 valleyview_set_cdclk(dev, req_cdclk);
5990
5991 vlv_program_pfi_credits(dev_priv);
5992
5993 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
5994 }
5995
5996 static void valleyview_crtc_enable(struct drm_crtc *crtc)
5997 {
5998 struct drm_device *dev = crtc->dev;
5999 struct drm_i915_private *dev_priv = to_i915(dev);
6000 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6001 struct intel_encoder *encoder;
6002 int pipe = intel_crtc->pipe;
6003 bool is_dsi;
6004
6005 if (WARN_ON(intel_crtc->active))
6006 return;
6007
6008 is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
6009
6010 if (intel_crtc->config->has_dp_encoder)
6011 intel_dp_set_m_n(intel_crtc, M1_N1);
6012
6013 intel_set_pipe_timings(intel_crtc);
6014
6015 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
6016 struct drm_i915_private *dev_priv = dev->dev_private;
6017
6018 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
6019 I915_WRITE(CHV_CANVAS(pipe), 0);
6020 }
6021
6022 i9xx_set_pipeconf(intel_crtc);
6023
6024 intel_crtc->active = true;
6025
6026 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6027
6028 for_each_encoder_on_crtc(dev, crtc, encoder)
6029 if (encoder->pre_pll_enable)
6030 encoder->pre_pll_enable(encoder);
6031
6032 if (!is_dsi) {
6033 if (IS_CHERRYVIEW(dev)) {
6034 chv_prepare_pll(intel_crtc, intel_crtc->config);
6035 chv_enable_pll(intel_crtc, intel_crtc->config);
6036 } else {
6037 vlv_prepare_pll(intel_crtc, intel_crtc->config);
6038 vlv_enable_pll(intel_crtc, intel_crtc->config);
6039 }
6040 }
6041
6042 for_each_encoder_on_crtc(dev, crtc, encoder)
6043 if (encoder->pre_enable)
6044 encoder->pre_enable(encoder);
6045
6046 i9xx_pfit_enable(intel_crtc);
6047
6048 intel_crtc_load_lut(crtc);
6049
6050 intel_enable_pipe(intel_crtc);
6051
6052 assert_vblank_disabled(crtc);
6053 drm_crtc_vblank_on(crtc);
6054
6055 for_each_encoder_on_crtc(dev, crtc, encoder)
6056 encoder->enable(encoder);
6057 }
6058
6059 static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
6060 {
6061 struct drm_device *dev = crtc->base.dev;
6062 struct drm_i915_private *dev_priv = dev->dev_private;
6063
6064 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
6065 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
6066 }
6067
6068 static void i9xx_crtc_enable(struct drm_crtc *crtc)
6069 {
6070 struct drm_device *dev = crtc->dev;
6071 struct drm_i915_private *dev_priv = to_i915(dev);
6072 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6073 struct intel_encoder *encoder;
6074 int pipe = intel_crtc->pipe;
6075
6076 if (WARN_ON(intel_crtc->active))
6077 return;
6078
6079 i9xx_set_pll_dividers(intel_crtc);
6080
6081 if (intel_crtc->config->has_dp_encoder)
6082 intel_dp_set_m_n(intel_crtc, M1_N1);
6083
6084 intel_set_pipe_timings(intel_crtc);
6085
6086 i9xx_set_pipeconf(intel_crtc);
6087
6088 intel_crtc->active = true;
6089
6090 if (!IS_GEN2(dev))
6091 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
6092
6093 for_each_encoder_on_crtc(dev, crtc, encoder)
6094 if (encoder->pre_enable)
6095 encoder->pre_enable(encoder);
6096
6097 i9xx_enable_pll(intel_crtc);
6098
6099 i9xx_pfit_enable(intel_crtc);
6100
6101 intel_crtc_load_lut(crtc);
6102
6103 intel_update_watermarks(crtc);
6104 intel_enable_pipe(intel_crtc);
6105
6106 assert_vblank_disabled(crtc);
6107 drm_crtc_vblank_on(crtc);
6108
6109 for_each_encoder_on_crtc(dev, crtc, encoder)
6110 encoder->enable(encoder);
6111 }
6112
6113 static void i9xx_pfit_disable(struct intel_crtc *crtc)
6114 {
6115 struct drm_device *dev = crtc->base.dev;
6116 struct drm_i915_private *dev_priv = dev->dev_private;
6117
6118 if (!crtc->config->gmch_pfit.control)
6119 return;
6120
6121 assert_pipe_disabled(dev_priv, crtc->pipe);
6122
6123 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
6124 I915_READ(PFIT_CONTROL));
6125 I915_WRITE(PFIT_CONTROL, 0);
6126 }
6127
6128 static void i9xx_crtc_disable(struct drm_crtc *crtc)
6129 {
6130 struct drm_device *dev = crtc->dev;
6131 struct drm_i915_private *dev_priv = dev->dev_private;
6132 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6133 struct intel_encoder *encoder;
6134 int pipe = intel_crtc->pipe;
6135
6136 /*
6137 * On gen2 planes are double buffered but the pipe isn't, so we must
6138 * wait for planes to fully turn off before disabling the pipe.
6139 * We also need to wait on all gmch platforms because of the
6140 * self-refresh mode constraint explained above.
6141 */
6142 intel_wait_for_vblank(dev, pipe);
6143
6144 for_each_encoder_on_crtc(dev, crtc, encoder)
6145 encoder->disable(encoder);
6146
6147 drm_crtc_vblank_off(crtc);
6148 assert_vblank_disabled(crtc);
6149
6150 intel_disable_pipe(intel_crtc);
6151
6152 i9xx_pfit_disable(intel_crtc);
6153
6154 for_each_encoder_on_crtc(dev, crtc, encoder)
6155 if (encoder->post_disable)
6156 encoder->post_disable(encoder);
6157
6158 if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
6159 if (IS_CHERRYVIEW(dev))
6160 chv_disable_pll(dev_priv, pipe);
6161 else if (IS_VALLEYVIEW(dev))
6162 vlv_disable_pll(dev_priv, pipe);
6163 else
6164 i9xx_disable_pll(intel_crtc);
6165 }
6166
6167 for_each_encoder_on_crtc(dev, crtc, encoder)
6168 if (encoder->post_pll_disable)
6169 encoder->post_pll_disable(encoder);
6170
6171 if (!IS_GEN2(dev))
6172 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
6173
6174 intel_crtc->active = false;
6175 intel_update_watermarks(crtc);
6176 }
6177
6178 static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
6179 {
6180 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6181 struct drm_i915_private *dev_priv = to_i915(crtc->dev);
6182 enum intel_display_power_domain domain;
6183 unsigned long domains;
6184
6185 if (!intel_crtc->active)
6186 return;
6187
6188 if (to_intel_plane_state(crtc->primary->state)->visible) {
6189 intel_crtc_wait_for_pending_flips(crtc);
6190 intel_pre_disable_primary(crtc);
6191 }
6192
6193 intel_crtc_disable_planes(crtc, crtc->state->plane_mask);
6194 dev_priv->display.crtc_disable(crtc);
6195 intel_disable_shared_dpll(intel_crtc);
6196
6197 domains = intel_crtc->enabled_power_domains;
6198 for_each_power_domain(domain, domains)
6199 intel_display_power_put(dev_priv, domain);
6200 intel_crtc->enabled_power_domains = 0;
6201 }
6202
6203 /*
6204 * turn all crtc's off, but do not adjust state
6205 * This has to be paired with a call to intel_modeset_setup_hw_state.
6206 */
6207 int intel_display_suspend(struct drm_device *dev)
6208 {
6209 struct drm_mode_config *config = &dev->mode_config;
6210 struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
6211 struct drm_atomic_state *state;
6212 struct drm_crtc *crtc;
6213 unsigned crtc_mask = 0;
6214 int ret = 0;
6215
6216 if (WARN_ON(!ctx))
6217 return 0;
6218
6219 lockdep_assert_held(&ctx->ww_ctx);
6220 state = drm_atomic_state_alloc(dev);
6221 if (WARN_ON(!state))
6222 return -ENOMEM;
6223
6224 state->acquire_ctx = ctx;
6225 state->allow_modeset = true;
6226
6227 for_each_crtc(dev, crtc) {
6228 struct drm_crtc_state *crtc_state =
6229 drm_atomic_get_crtc_state(state, crtc);
6230
6231 ret = PTR_ERR_OR_ZERO(crtc_state);
6232 if (ret)
6233 goto free;
6234
6235 if (!crtc_state->active)
6236 continue;
6237
6238 crtc_state->active = false;
6239 crtc_mask |= 1 << drm_crtc_index(crtc);
6240 }
6241
6242 if (crtc_mask) {
6243 ret = drm_atomic_commit(state);
6244
6245 if (!ret) {
6246 for_each_crtc(dev, crtc)
6247 if (crtc_mask & (1 << drm_crtc_index(crtc)))
6248 crtc->state->active = true;
6249
6250 return ret;
6251 }
6252 }
6253
6254 free:
6255 if (ret)
6256 DRM_ERROR("Suspending crtc's failed with %i\n", ret);
6257 drm_atomic_state_free(state);
6258 return ret;
6259 }
6260
6261 void intel_encoder_destroy(struct drm_encoder *encoder)
6262 {
6263 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
6264
6265 drm_encoder_cleanup(encoder);
6266 kfree(intel_encoder);
6267 }
6268
6269 /* Cross check the actual hw state with our own modeset state tracking (and it's
6270 * internal consistency). */
6271 static void intel_connector_check_state(struct intel_connector *connector)
6272 {
6273 struct drm_crtc *crtc = connector->base.state->crtc;
6274
6275 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6276 connector->base.base.id,
6277 connector->base.name);
6278
6279 if (connector->get_hw_state(connector)) {
6280 struct drm_encoder *encoder = &connector->encoder->base;
6281 struct drm_connector_state *conn_state = connector->base.state;
6282
6283 I915_STATE_WARN(!crtc,
6284 "connector enabled without attached crtc\n");
6285
6286 if (!crtc)
6287 return;
6288
6289 I915_STATE_WARN(!crtc->state->active,
6290 "connector is active, but attached crtc isn't\n");
6291
6292 if (!encoder)
6293 return;
6294
6295 I915_STATE_WARN(conn_state->best_encoder != encoder,
6296 "atomic encoder doesn't match attached encoder\n");
6297
6298 I915_STATE_WARN(conn_state->crtc != encoder->crtc,
6299 "attached encoder crtc differs from connector crtc\n");
6300 } else {
6301 I915_STATE_WARN(crtc && crtc->state->active,
6302 "attached crtc is active, but connector isn't\n");
6303 I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
6304 "best encoder set without crtc!\n");
6305 }
6306 }
6307
6308 int intel_connector_init(struct intel_connector *connector)
6309 {
6310 struct drm_connector_state *connector_state;
6311
6312 connector_state = kzalloc(sizeof *connector_state, GFP_KERNEL);
6313 if (!connector_state)
6314 return -ENOMEM;
6315
6316 connector->base.state = connector_state;
6317 return 0;
6318 }
6319
6320 struct intel_connector *intel_connector_alloc(void)
6321 {
6322 struct intel_connector *connector;
6323
6324 connector = kzalloc(sizeof *connector, GFP_KERNEL);
6325 if (!connector)
6326 return NULL;
6327
6328 if (intel_connector_init(connector) < 0) {
6329 kfree(connector);
6330 return NULL;
6331 }
6332
6333 return connector;
6334 }
6335
6336 /* Simple connector->get_hw_state implementation for encoders that support only
6337 * one connector and no cloning and hence the encoder state determines the state
6338 * of the connector. */
6339 bool intel_connector_get_hw_state(struct intel_connector *connector)
6340 {
6341 enum pipe pipe = 0;
6342 struct intel_encoder *encoder = connector->encoder;
6343
6344 return encoder->get_hw_state(encoder, &pipe);
6345 }
6346
6347 static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
6348 {
6349 if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6350 return crtc_state->fdi_lanes;
6351
6352 return 0;
6353 }
6354
6355 static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
6356 struct intel_crtc_state *pipe_config)
6357 {
6358 struct drm_atomic_state *state = pipe_config->base.state;
6359 struct intel_crtc *other_crtc;
6360 struct intel_crtc_state *other_crtc_state;
6361
6362 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6363 pipe_name(pipe), pipe_config->fdi_lanes);
6364 if (pipe_config->fdi_lanes > 4) {
6365 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6366 pipe_name(pipe), pipe_config->fdi_lanes);
6367 return -EINVAL;
6368 }
6369
6370 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
6371 if (pipe_config->fdi_lanes > 2) {
6372 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6373 pipe_config->fdi_lanes);
6374 return -EINVAL;
6375 } else {
6376 return 0;
6377 }
6378 }
6379
6380 if (INTEL_INFO(dev)->num_pipes == 2)
6381 return 0;
6382
6383 /* Ivybridge 3 pipe is really complicated */
6384 switch (pipe) {
6385 case PIPE_A:
6386 return 0;
6387 case PIPE_B:
6388 if (pipe_config->fdi_lanes <= 2)
6389 return 0;
6390
6391 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
6392 other_crtc_state =
6393 intel_atomic_get_crtc_state(state, other_crtc);
6394 if (IS_ERR(other_crtc_state))
6395 return PTR_ERR(other_crtc_state);
6396
6397 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
6398 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6399 pipe_name(pipe), pipe_config->fdi_lanes);
6400 return -EINVAL;
6401 }
6402 return 0;
6403 case PIPE_C:
6404 if (pipe_config->fdi_lanes > 2) {
6405 DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6406 pipe_name(pipe), pipe_config->fdi_lanes);
6407 return -EINVAL;
6408 }
6409
6410 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
6411 other_crtc_state =
6412 intel_atomic_get_crtc_state(state, other_crtc);
6413 if (IS_ERR(other_crtc_state))
6414 return PTR_ERR(other_crtc_state);
6415
6416 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
6417 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6418 return -EINVAL;
6419 }
6420 return 0;
6421 default:
6422 BUG();
6423 }
6424 }
6425
6426 #define RETRY 1
6427 static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
6428 struct intel_crtc_state *pipe_config)
6429 {
6430 struct drm_device *dev = intel_crtc->base.dev;
6431 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6432 int lane, link_bw, fdi_dotclock, ret;
6433 bool needs_recompute = false;
6434
6435 retry:
6436 /* FDI is a binary signal running at ~2.7GHz, encoding
6437 * each output octet as 10 bits. The actual frequency
6438 * is stored as a divider into a 100MHz clock, and the
6439 * mode pixel clock is stored in units of 1KHz.
6440 * Hence the bw of each lane in terms of the mode signal
6441 * is:
6442 */
6443 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
6444
6445 fdi_dotclock = adjusted_mode->crtc_clock;
6446
6447 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
6448 pipe_config->pipe_bpp);
6449
6450 pipe_config->fdi_lanes = lane;
6451
6452 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
6453 link_bw, &pipe_config->fdi_m_n);
6454
6455 ret = ironlake_check_fdi_lanes(intel_crtc->base.dev,
6456 intel_crtc->pipe, pipe_config);
6457 if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
6458 pipe_config->pipe_bpp -= 2*3;
6459 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6460 pipe_config->pipe_bpp);
6461 needs_recompute = true;
6462 pipe_config->bw_constrained = true;
6463
6464 goto retry;
6465 }
6466
6467 if (needs_recompute)
6468 return RETRY;
6469
6470 return ret;
6471 }
6472
6473 static bool pipe_config_supports_ips(struct drm_i915_private *dev_priv,
6474 struct intel_crtc_state *pipe_config)
6475 {
6476 if (pipe_config->pipe_bpp > 24)
6477 return false;
6478
6479 /* HSW can handle pixel rate up to cdclk? */
6480 if (IS_HASWELL(dev_priv->dev))
6481 return true;
6482
6483 /*
6484 * We compare against max which means we must take
6485 * the increased cdclk requirement into account when
6486 * calculating the new cdclk.
6487 *
6488 * Should measure whether using a lower cdclk w/o IPS
6489 */
6490 return ilk_pipe_pixel_rate(pipe_config) <=
6491 dev_priv->max_cdclk_freq * 95 / 100;
6492 }
6493
6494 static void hsw_compute_ips_config(struct intel_crtc *crtc,
6495 struct intel_crtc_state *pipe_config)
6496 {
6497 struct drm_device *dev = crtc->base.dev;
6498 struct drm_i915_private *dev_priv = dev->dev_private;
6499
6500 pipe_config->ips_enabled = i915.enable_ips &&
6501 hsw_crtc_supports_ips(crtc) &&
6502 pipe_config_supports_ips(dev_priv, pipe_config);
6503 }
6504
6505 static int intel_crtc_compute_config(struct intel_crtc *crtc,
6506 struct intel_crtc_state *pipe_config)
6507 {
6508 struct drm_device *dev = crtc->base.dev;
6509 struct drm_i915_private *dev_priv = dev->dev_private;
6510 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6511
6512 /* FIXME should check pixel clock limits on all platforms */
6513 if (INTEL_INFO(dev)->gen < 4) {
6514 int clock_limit = dev_priv->max_cdclk_freq;
6515
6516 /*
6517 * Enable pixel doubling when the dot clock
6518 * is > 90% of the (display) core speed.
6519 *
6520 * GDG double wide on either pipe,
6521 * otherwise pipe A only.
6522 */
6523 if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
6524 adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
6525 clock_limit *= 2;
6526 pipe_config->double_wide = true;
6527 }
6528
6529 if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
6530 return -EINVAL;
6531 }
6532
6533 /*
6534 * Pipe horizontal size must be even in:
6535 * - DVO ganged mode
6536 * - LVDS dual channel mode
6537 * - Double wide pipe
6538 */
6539 if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
6540 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
6541 pipe_config->pipe_src_w &= ~1;
6542
6543 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
6544 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
6545 */
6546 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
6547 adjusted_mode->hsync_start == adjusted_mode->hdisplay)
6548 return -EINVAL;
6549
6550 if (HAS_IPS(dev))
6551 hsw_compute_ips_config(crtc, pipe_config);
6552
6553 if (pipe_config->has_pch_encoder)
6554 return ironlake_fdi_compute_config(crtc, pipe_config);
6555
6556 return 0;
6557 }
6558
6559 static int skylake_get_display_clock_speed(struct drm_device *dev)
6560 {
6561 struct drm_i915_private *dev_priv = to_i915(dev);
6562 uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
6563 uint32_t cdctl = I915_READ(CDCLK_CTL);
6564 uint32_t linkrate;
6565
6566 if (!(lcpll1 & LCPLL_PLL_ENABLE))
6567 return 24000; /* 24MHz is the cd freq with NSSC ref */
6568
6569 if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
6570 return 540000;
6571
6572 linkrate = (I915_READ(DPLL_CTRL1) &
6573 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
6574
6575 if (linkrate == DPLL_CTRL1_LINK_RATE_2160 ||
6576 linkrate == DPLL_CTRL1_LINK_RATE_1080) {
6577 /* vco 8640 */
6578 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6579 case CDCLK_FREQ_450_432:
6580 return 432000;
6581 case CDCLK_FREQ_337_308:
6582 return 308570;
6583 case CDCLK_FREQ_675_617:
6584 return 617140;
6585 default:
6586 WARN(1, "Unknown cd freq selection\n");
6587 }
6588 } else {
6589 /* vco 8100 */
6590 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6591 case CDCLK_FREQ_450_432:
6592 return 450000;
6593 case CDCLK_FREQ_337_308:
6594 return 337500;
6595 case CDCLK_FREQ_675_617:
6596 return 675000;
6597 default:
6598 WARN(1, "Unknown cd freq selection\n");
6599 }
6600 }
6601
6602 /* error case, do as if DPLL0 isn't enabled */
6603 return 24000;
6604 }
6605
6606 static int broxton_get_display_clock_speed(struct drm_device *dev)
6607 {
6608 struct drm_i915_private *dev_priv = to_i915(dev);
6609 uint32_t cdctl = I915_READ(CDCLK_CTL);
6610 uint32_t pll_ratio = I915_READ(BXT_DE_PLL_CTL) & BXT_DE_PLL_RATIO_MASK;
6611 uint32_t pll_enab = I915_READ(BXT_DE_PLL_ENABLE);
6612 int cdclk;
6613
6614 if (!(pll_enab & BXT_DE_PLL_PLL_ENABLE))
6615 return 19200;
6616
6617 cdclk = 19200 * pll_ratio / 2;
6618
6619 switch (cdctl & BXT_CDCLK_CD2X_DIV_SEL_MASK) {
6620 case BXT_CDCLK_CD2X_DIV_SEL_1:
6621 return cdclk; /* 576MHz or 624MHz */
6622 case BXT_CDCLK_CD2X_DIV_SEL_1_5:
6623 return cdclk * 2 / 3; /* 384MHz */
6624 case BXT_CDCLK_CD2X_DIV_SEL_2:
6625 return cdclk / 2; /* 288MHz */
6626 case BXT_CDCLK_CD2X_DIV_SEL_4:
6627 return cdclk / 4; /* 144MHz */
6628 }
6629
6630 /* error case, do as if DE PLL isn't enabled */
6631 return 19200;
6632 }
6633
6634 static int broadwell_get_display_clock_speed(struct drm_device *dev)
6635 {
6636 struct drm_i915_private *dev_priv = dev->dev_private;
6637 uint32_t lcpll = I915_READ(LCPLL_CTL);
6638 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6639
6640 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6641 return 800000;
6642 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6643 return 450000;
6644 else if (freq == LCPLL_CLK_FREQ_450)
6645 return 450000;
6646 else if (freq == LCPLL_CLK_FREQ_54O_BDW)
6647 return 540000;
6648 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
6649 return 337500;
6650 else
6651 return 675000;
6652 }
6653
6654 static int haswell_get_display_clock_speed(struct drm_device *dev)
6655 {
6656 struct drm_i915_private *dev_priv = dev->dev_private;
6657 uint32_t lcpll = I915_READ(LCPLL_CTL);
6658 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6659
6660 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6661 return 800000;
6662 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6663 return 450000;
6664 else if (freq == LCPLL_CLK_FREQ_450)
6665 return 450000;
6666 else if (IS_HSW_ULT(dev))
6667 return 337500;
6668 else
6669 return 540000;
6670 }
6671
6672 static int valleyview_get_display_clock_speed(struct drm_device *dev)
6673 {
6674 struct drm_i915_private *dev_priv = dev->dev_private;
6675 u32 val;
6676 int divider;
6677
6678 if (dev_priv->hpll_freq == 0)
6679 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
6680
6681 mutex_lock(&dev_priv->sb_lock);
6682 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
6683 mutex_unlock(&dev_priv->sb_lock);
6684
6685 divider = val & DISPLAY_FREQUENCY_VALUES;
6686
6687 WARN((val & DISPLAY_FREQUENCY_STATUS) !=
6688 (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
6689 "cdclk change in progress\n");
6690
6691 return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
6692 }
6693
6694 static int ilk_get_display_clock_speed(struct drm_device *dev)
6695 {
6696 return 450000;
6697 }
6698
6699 static int i945_get_display_clock_speed(struct drm_device *dev)
6700 {
6701 return 400000;
6702 }
6703
6704 static int i915_get_display_clock_speed(struct drm_device *dev)
6705 {
6706 return 333333;
6707 }
6708
6709 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
6710 {
6711 return 200000;
6712 }
6713
6714 static int pnv_get_display_clock_speed(struct drm_device *dev)
6715 {
6716 u16 gcfgc = 0;
6717
6718 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6719
6720 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6721 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
6722 return 266667;
6723 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
6724 return 333333;
6725 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
6726 return 444444;
6727 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
6728 return 200000;
6729 default:
6730 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
6731 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
6732 return 133333;
6733 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
6734 return 166667;
6735 }
6736 }
6737
6738 static int i915gm_get_display_clock_speed(struct drm_device *dev)
6739 {
6740 u16 gcfgc = 0;
6741
6742 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6743
6744 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
6745 return 133333;
6746 else {
6747 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6748 case GC_DISPLAY_CLOCK_333_MHZ:
6749 return 333333;
6750 default:
6751 case GC_DISPLAY_CLOCK_190_200_MHZ:
6752 return 190000;
6753 }
6754 }
6755 }
6756
6757 static int i865_get_display_clock_speed(struct drm_device *dev)
6758 {
6759 return 266667;
6760 }
6761
6762 static int i85x_get_display_clock_speed(struct drm_device *dev)
6763 {
6764 u16 hpllcc = 0;
6765
6766 /*
6767 * 852GM/852GMV only supports 133 MHz and the HPLLCC
6768 * encoding is different :(
6769 * FIXME is this the right way to detect 852GM/852GMV?
6770 */
6771 if (dev->pdev->revision == 0x1)
6772 return 133333;
6773
6774 pci_bus_read_config_word(dev->pdev->bus,
6775 PCI_DEVFN(0, 3), HPLLCC, &hpllcc);
6776
6777 /* Assume that the hardware is in the high speed state. This
6778 * should be the default.
6779 */
6780 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
6781 case GC_CLOCK_133_200:
6782 case GC_CLOCK_133_200_2:
6783 case GC_CLOCK_100_200:
6784 return 200000;
6785 case GC_CLOCK_166_250:
6786 return 250000;
6787 case GC_CLOCK_100_133:
6788 return 133333;
6789 case GC_CLOCK_133_266:
6790 case GC_CLOCK_133_266_2:
6791 case GC_CLOCK_166_266:
6792 return 266667;
6793 }
6794
6795 /* Shouldn't happen */
6796 return 0;
6797 }
6798
6799 static int i830_get_display_clock_speed(struct drm_device *dev)
6800 {
6801 return 133333;
6802 }
6803
6804 static unsigned int intel_hpll_vco(struct drm_device *dev)
6805 {
6806 struct drm_i915_private *dev_priv = dev->dev_private;
6807 static const unsigned int blb_vco[8] = {
6808 [0] = 3200000,
6809 [1] = 4000000,
6810 [2] = 5333333,
6811 [3] = 4800000,
6812 [4] = 6400000,
6813 };
6814 static const unsigned int pnv_vco[8] = {
6815 [0] = 3200000,
6816 [1] = 4000000,
6817 [2] = 5333333,
6818 [3] = 4800000,
6819 [4] = 2666667,
6820 };
6821 static const unsigned int cl_vco[8] = {
6822 [0] = 3200000,
6823 [1] = 4000000,
6824 [2] = 5333333,
6825 [3] = 6400000,
6826 [4] = 3333333,
6827 [5] = 3566667,
6828 [6] = 4266667,
6829 };
6830 static const unsigned int elk_vco[8] = {
6831 [0] = 3200000,
6832 [1] = 4000000,
6833 [2] = 5333333,
6834 [3] = 4800000,
6835 };
6836 static const unsigned int ctg_vco[8] = {
6837 [0] = 3200000,
6838 [1] = 4000000,
6839 [2] = 5333333,
6840 [3] = 6400000,
6841 [4] = 2666667,
6842 [5] = 4266667,
6843 };
6844 const unsigned int *vco_table;
6845 unsigned int vco;
6846 uint8_t tmp = 0;
6847
6848 /* FIXME other chipsets? */
6849 if (IS_GM45(dev))
6850 vco_table = ctg_vco;
6851 else if (IS_G4X(dev))
6852 vco_table = elk_vco;
6853 else if (IS_CRESTLINE(dev))
6854 vco_table = cl_vco;
6855 else if (IS_PINEVIEW(dev))
6856 vco_table = pnv_vco;
6857 else if (IS_G33(dev))
6858 vco_table = blb_vco;
6859 else
6860 return 0;
6861
6862 tmp = I915_READ(IS_MOBILE(dev) ? HPLLVCO_MOBILE : HPLLVCO);
6863
6864 vco = vco_table[tmp & 0x7];
6865 if (vco == 0)
6866 DRM_ERROR("Bad HPLL VCO (HPLLVCO=0x%02x)\n", tmp);
6867 else
6868 DRM_DEBUG_KMS("HPLL VCO %u kHz\n", vco);
6869
6870 return vco;
6871 }
6872
6873 static int gm45_get_display_clock_speed(struct drm_device *dev)
6874 {
6875 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6876 uint16_t tmp = 0;
6877
6878 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6879
6880 cdclk_sel = (tmp >> 12) & 0x1;
6881
6882 switch (vco) {
6883 case 2666667:
6884 case 4000000:
6885 case 5333333:
6886 return cdclk_sel ? 333333 : 222222;
6887 case 3200000:
6888 return cdclk_sel ? 320000 : 228571;
6889 default:
6890 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u, CFGC=0x%04x\n", vco, tmp);
6891 return 222222;
6892 }
6893 }
6894
6895 static int i965gm_get_display_clock_speed(struct drm_device *dev)
6896 {
6897 static const uint8_t div_3200[] = { 16, 10, 8 };
6898 static const uint8_t div_4000[] = { 20, 12, 10 };
6899 static const uint8_t div_5333[] = { 24, 16, 14 };
6900 const uint8_t *div_table;
6901 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6902 uint16_t tmp = 0;
6903
6904 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6905
6906 cdclk_sel = ((tmp >> 8) & 0x1f) - 1;
6907
6908 if (cdclk_sel >= ARRAY_SIZE(div_3200))
6909 goto fail;
6910
6911 switch (vco) {
6912 case 3200000:
6913 div_table = div_3200;
6914 break;
6915 case 4000000:
6916 div_table = div_4000;
6917 break;
6918 case 5333333:
6919 div_table = div_5333;
6920 break;
6921 default:
6922 goto fail;
6923 }
6924
6925 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
6926
6927 fail:
6928 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%04x\n", vco, tmp);
6929 return 200000;
6930 }
6931
6932 static int g33_get_display_clock_speed(struct drm_device *dev)
6933 {
6934 static const uint8_t div_3200[] = { 12, 10, 8, 7, 5, 16 };
6935 static const uint8_t div_4000[] = { 14, 12, 10, 8, 6, 20 };
6936 static const uint8_t div_4800[] = { 20, 14, 12, 10, 8, 24 };
6937 static const uint8_t div_5333[] = { 20, 16, 12, 12, 8, 28 };
6938 const uint8_t *div_table;
6939 unsigned int cdclk_sel, vco = intel_hpll_vco(dev);
6940 uint16_t tmp = 0;
6941
6942 pci_read_config_word(dev->pdev, GCFGC, &tmp);
6943
6944 cdclk_sel = (tmp >> 4) & 0x7;
6945
6946 if (cdclk_sel >= ARRAY_SIZE(div_3200))
6947 goto fail;
6948
6949 switch (vco) {
6950 case 3200000:
6951 div_table = div_3200;
6952 break;
6953 case 4000000:
6954 div_table = div_4000;
6955 break;
6956 case 4800000:
6957 div_table = div_4800;
6958 break;
6959 case 5333333:
6960 div_table = div_5333;
6961 break;
6962 default:
6963 goto fail;
6964 }
6965
6966 return DIV_ROUND_CLOSEST(vco, div_table[cdclk_sel]);
6967
6968 fail:
6969 DRM_ERROR("Unable to determine CDCLK. HPLL VCO=%u kHz, CFGC=0x%08x\n", vco, tmp);
6970 return 190476;
6971 }
6972
6973 static void
6974 intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
6975 {
6976 while (*num > DATA_LINK_M_N_MASK ||
6977 *den > DATA_LINK_M_N_MASK) {
6978 *num >>= 1;
6979 *den >>= 1;
6980 }
6981 }
6982
6983 static void compute_m_n(unsigned int m, unsigned int n,
6984 uint32_t *ret_m, uint32_t *ret_n)
6985 {
6986 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
6987 *ret_m = div_u64((uint64_t) m * *ret_n, n);
6988 intel_reduce_m_n_ratio(ret_m, ret_n);
6989 }
6990
6991 void
6992 intel_link_compute_m_n(int bits_per_pixel, int nlanes,
6993 int pixel_clock, int link_clock,
6994 struct intel_link_m_n *m_n)
6995 {
6996 m_n->tu = 64;
6997
6998 compute_m_n(bits_per_pixel * pixel_clock,
6999 link_clock * nlanes * 8,
7000 &m_n->gmch_m, &m_n->gmch_n);
7001
7002 compute_m_n(pixel_clock, link_clock,
7003 &m_n->link_m, &m_n->link_n);
7004 }
7005
7006 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
7007 {
7008 if (i915.panel_use_ssc >= 0)
7009 return i915.panel_use_ssc != 0;
7010 return dev_priv->vbt.lvds_use_ssc
7011 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
7012 }
7013
7014 static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
7015 int num_connectors)
7016 {
7017 struct drm_device *dev = crtc_state->base.crtc->dev;
7018 struct drm_i915_private *dev_priv = dev->dev_private;
7019 int refclk;
7020
7021 WARN_ON(!crtc_state->base.state);
7022
7023 if (IS_VALLEYVIEW(dev) || IS_BROXTON(dev)) {
7024 refclk = 100000;
7025 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7026 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
7027 refclk = dev_priv->vbt.lvds_ssc_freq;
7028 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
7029 } else if (!IS_GEN2(dev)) {
7030 refclk = 96000;
7031 } else {
7032 refclk = 48000;
7033 }
7034
7035 return refclk;
7036 }
7037
7038 static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
7039 {
7040 return (1 << dpll->n) << 16 | dpll->m2;
7041 }
7042
7043 static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
7044 {
7045 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
7046 }
7047
7048 static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
7049 struct intel_crtc_state *crtc_state,
7050 intel_clock_t *reduced_clock)
7051 {
7052 struct drm_device *dev = crtc->base.dev;
7053 u32 fp, fp2 = 0;
7054
7055 if (IS_PINEVIEW(dev)) {
7056 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
7057 if (reduced_clock)
7058 fp2 = pnv_dpll_compute_fp(reduced_clock);
7059 } else {
7060 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
7061 if (reduced_clock)
7062 fp2 = i9xx_dpll_compute_fp(reduced_clock);
7063 }
7064
7065 crtc_state->dpll_hw_state.fp0 = fp;
7066
7067 crtc->lowfreq_avail = false;
7068 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7069 reduced_clock) {
7070 crtc_state->dpll_hw_state.fp1 = fp2;
7071 crtc->lowfreq_avail = true;
7072 } else {
7073 crtc_state->dpll_hw_state.fp1 = fp;
7074 }
7075 }
7076
7077 static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
7078 pipe)
7079 {
7080 u32 reg_val;
7081
7082 /*
7083 * PLLB opamp always calibrates to max value of 0x3f, force enable it
7084 * and set it to a reasonable value instead.
7085 */
7086 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7087 reg_val &= 0xffffff00;
7088 reg_val |= 0x00000030;
7089 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7090
7091 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7092 reg_val &= 0x8cffffff;
7093 reg_val = 0x8c000000;
7094 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7095
7096 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
7097 reg_val &= 0xffffff00;
7098 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
7099
7100 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
7101 reg_val &= 0x00ffffff;
7102 reg_val |= 0xb0000000;
7103 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
7104 }
7105
7106 static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
7107 struct intel_link_m_n *m_n)
7108 {
7109 struct drm_device *dev = crtc->base.dev;
7110 struct drm_i915_private *dev_priv = dev->dev_private;
7111 int pipe = crtc->pipe;
7112
7113 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7114 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
7115 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
7116 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
7117 }
7118
7119 static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
7120 struct intel_link_m_n *m_n,
7121 struct intel_link_m_n *m2_n2)
7122 {
7123 struct drm_device *dev = crtc->base.dev;
7124 struct drm_i915_private *dev_priv = dev->dev_private;
7125 int pipe = crtc->pipe;
7126 enum transcoder transcoder = crtc->config->cpu_transcoder;
7127
7128 if (INTEL_INFO(dev)->gen >= 5) {
7129 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
7130 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
7131 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
7132 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
7133 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
7134 * for gen < 8) and if DRRS is supported (to make sure the
7135 * registers are not unnecessarily accessed).
7136 */
7137 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
7138 crtc->config->has_drrs) {
7139 I915_WRITE(PIPE_DATA_M2(transcoder),
7140 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
7141 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
7142 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
7143 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
7144 }
7145 } else {
7146 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
7147 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
7148 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
7149 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
7150 }
7151 }
7152
7153 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
7154 {
7155 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
7156
7157 if (m_n == M1_N1) {
7158 dp_m_n = &crtc->config->dp_m_n;
7159 dp_m2_n2 = &crtc->config->dp_m2_n2;
7160 } else if (m_n == M2_N2) {
7161
7162 /*
7163 * M2_N2 registers are not supported. Hence m2_n2 divider value
7164 * needs to be programmed into M1_N1.
7165 */
7166 dp_m_n = &crtc->config->dp_m2_n2;
7167 } else {
7168 DRM_ERROR("Unsupported divider value\n");
7169 return;
7170 }
7171
7172 if (crtc->config->has_pch_encoder)
7173 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
7174 else
7175 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
7176 }
7177
7178 static void vlv_compute_dpll(struct intel_crtc *crtc,
7179 struct intel_crtc_state *pipe_config)
7180 {
7181 u32 dpll, dpll_md;
7182
7183 /*
7184 * Enable DPIO clock input. We should never disable the reference
7185 * clock for pipe B, since VGA hotplug / manual detection depends
7186 * on it.
7187 */
7188 dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REF_CLK_ENABLE_VLV |
7189 DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_REF_CLK_VLV;
7190 /* We should never disable this, set it here for state tracking */
7191 if (crtc->pipe == PIPE_B)
7192 dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7193 dpll |= DPLL_VCO_ENABLE;
7194 pipe_config->dpll_hw_state.dpll = dpll;
7195
7196 dpll_md = (pipe_config->pixel_multiplier - 1)
7197 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7198 pipe_config->dpll_hw_state.dpll_md = dpll_md;
7199 }
7200
7201 static void vlv_prepare_pll(struct intel_crtc *crtc,
7202 const struct intel_crtc_state *pipe_config)
7203 {
7204 struct drm_device *dev = crtc->base.dev;
7205 struct drm_i915_private *dev_priv = dev->dev_private;
7206 int pipe = crtc->pipe;
7207 u32 mdiv;
7208 u32 bestn, bestm1, bestm2, bestp1, bestp2;
7209 u32 coreclk, reg_val;
7210
7211 mutex_lock(&dev_priv->sb_lock);
7212
7213 bestn = pipe_config->dpll.n;
7214 bestm1 = pipe_config->dpll.m1;
7215 bestm2 = pipe_config->dpll.m2;
7216 bestp1 = pipe_config->dpll.p1;
7217 bestp2 = pipe_config->dpll.p2;
7218
7219 /* See eDP HDMI DPIO driver vbios notes doc */
7220
7221 /* PLL B needs special handling */
7222 if (pipe == PIPE_B)
7223 vlv_pllb_recal_opamp(dev_priv, pipe);
7224
7225 /* Set up Tx target for periodic Rcomp update */
7226 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
7227
7228 /* Disable target IRef on PLL */
7229 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
7230 reg_val &= 0x00ffffff;
7231 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
7232
7233 /* Disable fast lock */
7234 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
7235
7236 /* Set idtafcrecal before PLL is enabled */
7237 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
7238 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
7239 mdiv |= ((bestn << DPIO_N_SHIFT));
7240 mdiv |= (1 << DPIO_K_SHIFT);
7241
7242 /*
7243 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
7244 * but we don't support that).
7245 * Note: don't use the DAC post divider as it seems unstable.
7246 */
7247 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
7248 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7249
7250 mdiv |= DPIO_ENABLE_CALIBRATION;
7251 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
7252
7253 /* Set HBR and RBR LPF coefficients */
7254 if (pipe_config->port_clock == 162000 ||
7255 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
7256 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
7257 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7258 0x009f0003);
7259 else
7260 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
7261 0x00d0000f);
7262
7263 if (pipe_config->has_dp_encoder) {
7264 /* Use SSC source */
7265 if (pipe == PIPE_A)
7266 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7267 0x0df40000);
7268 else
7269 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7270 0x0df70000);
7271 } else { /* HDMI or VGA */
7272 /* Use bend source */
7273 if (pipe == PIPE_A)
7274 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7275 0x0df70000);
7276 else
7277 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
7278 0x0df40000);
7279 }
7280
7281 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
7282 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
7283 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
7284 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
7285 coreclk |= 0x01000000;
7286 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
7287
7288 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
7289 mutex_unlock(&dev_priv->sb_lock);
7290 }
7291
7292 static void chv_compute_dpll(struct intel_crtc *crtc,
7293 struct intel_crtc_state *pipe_config)
7294 {
7295 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
7296 DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
7297 DPLL_VCO_ENABLE;
7298 if (crtc->pipe != PIPE_A)
7299 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
7300
7301 pipe_config->dpll_hw_state.dpll_md =
7302 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7303 }
7304
7305 static void chv_prepare_pll(struct intel_crtc *crtc,
7306 const struct intel_crtc_state *pipe_config)
7307 {
7308 struct drm_device *dev = crtc->base.dev;
7309 struct drm_i915_private *dev_priv = dev->dev_private;
7310 int pipe = crtc->pipe;
7311 int dpll_reg = DPLL(crtc->pipe);
7312 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7313 u32 loopfilter, tribuf_calcntr;
7314 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
7315 u32 dpio_val;
7316 int vco;
7317
7318 bestn = pipe_config->dpll.n;
7319 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7320 bestm1 = pipe_config->dpll.m1;
7321 bestm2 = pipe_config->dpll.m2 >> 22;
7322 bestp1 = pipe_config->dpll.p1;
7323 bestp2 = pipe_config->dpll.p2;
7324 vco = pipe_config->dpll.vco;
7325 dpio_val = 0;
7326 loopfilter = 0;
7327
7328 /*
7329 * Enable Refclk and SSC
7330 */
7331 I915_WRITE(dpll_reg,
7332 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
7333
7334 mutex_lock(&dev_priv->sb_lock);
7335
7336 /* p1 and p2 divider */
7337 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7338 5 << DPIO_CHV_S1_DIV_SHIFT |
7339 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7340 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7341 1 << DPIO_CHV_K_DIV_SHIFT);
7342
7343 /* Feedback post-divider - m2 */
7344 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7345
7346 /* Feedback refclk divider - n and m1 */
7347 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7348 DPIO_CHV_M1_DIV_BY_2 |
7349 1 << DPIO_CHV_N_DIV_SHIFT);
7350
7351 /* M2 fraction division */
7352 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
7353
7354 /* M2 fraction division enable */
7355 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7356 dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7357 dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7358 if (bestm2_frac)
7359 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7360 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
7361
7362 /* Program digital lock detect threshold */
7363 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7364 dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7365 DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7366 dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7367 if (!bestm2_frac)
7368 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7369 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7370
7371 /* Loop filter */
7372 if (vco == 5400000) {
7373 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7374 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7375 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7376 tribuf_calcntr = 0x9;
7377 } else if (vco <= 6200000) {
7378 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7379 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7380 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7381 tribuf_calcntr = 0x9;
7382 } else if (vco <= 6480000) {
7383 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7384 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7385 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7386 tribuf_calcntr = 0x8;
7387 } else {
7388 /* Not supported. Apply the same limits as in the max case */
7389 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7390 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7391 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7392 tribuf_calcntr = 0;
7393 }
7394 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7395
7396 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
7397 dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7398 dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7399 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7400
7401 /* AFC Recal */
7402 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7403 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7404 DPIO_AFC_RECAL);
7405
7406 mutex_unlock(&dev_priv->sb_lock);
7407 }
7408
7409 /**
7410 * vlv_force_pll_on - forcibly enable just the PLL
7411 * @dev_priv: i915 private structure
7412 * @pipe: pipe PLL to enable
7413 * @dpll: PLL configuration
7414 *
7415 * Enable the PLL for @pipe using the supplied @dpll config. To be used
7416 * in cases where we need the PLL enabled even when @pipe is not going to
7417 * be enabled.
7418 */
7419 void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
7420 const struct dpll *dpll)
7421 {
7422 struct intel_crtc *crtc =
7423 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
7424 struct intel_crtc_state pipe_config = {
7425 .base.crtc = &crtc->base,
7426 .pixel_multiplier = 1,
7427 .dpll = *dpll,
7428 };
7429
7430 if (IS_CHERRYVIEW(dev)) {
7431 chv_compute_dpll(crtc, &pipe_config);
7432 chv_prepare_pll(crtc, &pipe_config);
7433 chv_enable_pll(crtc, &pipe_config);
7434 } else {
7435 vlv_compute_dpll(crtc, &pipe_config);
7436 vlv_prepare_pll(crtc, &pipe_config);
7437 vlv_enable_pll(crtc, &pipe_config);
7438 }
7439 }
7440
7441 /**
7442 * vlv_force_pll_off - forcibly disable just the PLL
7443 * @dev_priv: i915 private structure
7444 * @pipe: pipe PLL to disable
7445 *
7446 * Disable the PLL for @pipe. To be used in cases where we need
7447 * the PLL enabled even when @pipe is not going to be enabled.
7448 */
7449 void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
7450 {
7451 if (IS_CHERRYVIEW(dev))
7452 chv_disable_pll(to_i915(dev), pipe);
7453 else
7454 vlv_disable_pll(to_i915(dev), pipe);
7455 }
7456
7457 static void i9xx_compute_dpll(struct intel_crtc *crtc,
7458 struct intel_crtc_state *crtc_state,
7459 intel_clock_t *reduced_clock,
7460 int num_connectors)
7461 {
7462 struct drm_device *dev = crtc->base.dev;
7463 struct drm_i915_private *dev_priv = dev->dev_private;
7464 u32 dpll;
7465 bool is_sdvo;
7466 struct dpll *clock = &crtc_state->dpll;
7467
7468 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7469
7470 is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7471 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
7472
7473 dpll = DPLL_VGA_MODE_DIS;
7474
7475 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
7476 dpll |= DPLLB_MODE_LVDS;
7477 else
7478 dpll |= DPLLB_MODE_DAC_SERIAL;
7479
7480 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
7481 dpll |= (crtc_state->pixel_multiplier - 1)
7482 << SDVO_MULTIPLIER_SHIFT_HIRES;
7483 }
7484
7485 if (is_sdvo)
7486 dpll |= DPLL_SDVO_HIGH_SPEED;
7487
7488 if (crtc_state->has_dp_encoder)
7489 dpll |= DPLL_SDVO_HIGH_SPEED;
7490
7491 /* compute bitmask from p1 value */
7492 if (IS_PINEVIEW(dev))
7493 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7494 else {
7495 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7496 if (IS_G4X(dev) && reduced_clock)
7497 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7498 }
7499 switch (clock->p2) {
7500 case 5:
7501 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7502 break;
7503 case 7:
7504 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7505 break;
7506 case 10:
7507 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7508 break;
7509 case 14:
7510 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7511 break;
7512 }
7513 if (INTEL_INFO(dev)->gen >= 4)
7514 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7515
7516 if (crtc_state->sdvo_tv_clock)
7517 dpll |= PLL_REF_INPUT_TVCLKINBC;
7518 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7519 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7520 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7521 else
7522 dpll |= PLL_REF_INPUT_DREFCLK;
7523
7524 dpll |= DPLL_VCO_ENABLE;
7525 crtc_state->dpll_hw_state.dpll = dpll;
7526
7527 if (INTEL_INFO(dev)->gen >= 4) {
7528 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
7529 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
7530 crtc_state->dpll_hw_state.dpll_md = dpll_md;
7531 }
7532 }
7533
7534 static void i8xx_compute_dpll(struct intel_crtc *crtc,
7535 struct intel_crtc_state *crtc_state,
7536 intel_clock_t *reduced_clock,
7537 int num_connectors)
7538 {
7539 struct drm_device *dev = crtc->base.dev;
7540 struct drm_i915_private *dev_priv = dev->dev_private;
7541 u32 dpll;
7542 struct dpll *clock = &crtc_state->dpll;
7543
7544 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
7545
7546 dpll = DPLL_VGA_MODE_DIS;
7547
7548 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
7549 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7550 } else {
7551 if (clock->p1 == 2)
7552 dpll |= PLL_P1_DIVIDE_BY_TWO;
7553 else
7554 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7555 if (clock->p2 == 4)
7556 dpll |= PLL_P2_DIVIDE_BY_4;
7557 }
7558
7559 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
7560 dpll |= DPLL_DVO_2X_MODE;
7561
7562 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
7563 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7564 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7565 else
7566 dpll |= PLL_REF_INPUT_DREFCLK;
7567
7568 dpll |= DPLL_VCO_ENABLE;
7569 crtc_state->dpll_hw_state.dpll = dpll;
7570 }
7571
7572 static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
7573 {
7574 struct drm_device *dev = intel_crtc->base.dev;
7575 struct drm_i915_private *dev_priv = dev->dev_private;
7576 enum pipe pipe = intel_crtc->pipe;
7577 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
7578 struct drm_display_mode *adjusted_mode =
7579 &intel_crtc->config->base.adjusted_mode;
7580 uint32_t crtc_vtotal, crtc_vblank_end;
7581 int vsyncshift = 0;
7582
7583 /* We need to be careful not to changed the adjusted mode, for otherwise
7584 * the hw state checker will get angry at the mismatch. */
7585 crtc_vtotal = adjusted_mode->crtc_vtotal;
7586 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
7587
7588 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
7589 /* the chip adds 2 halflines automatically */
7590 crtc_vtotal -= 1;
7591 crtc_vblank_end -= 1;
7592
7593 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7594 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7595 else
7596 vsyncshift = adjusted_mode->crtc_hsync_start -
7597 adjusted_mode->crtc_htotal / 2;
7598 if (vsyncshift < 0)
7599 vsyncshift += adjusted_mode->crtc_htotal;
7600 }
7601
7602 if (INTEL_INFO(dev)->gen > 3)
7603 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
7604
7605 I915_WRITE(HTOTAL(cpu_transcoder),
7606 (adjusted_mode->crtc_hdisplay - 1) |
7607 ((adjusted_mode->crtc_htotal - 1) << 16));
7608 I915_WRITE(HBLANK(cpu_transcoder),
7609 (adjusted_mode->crtc_hblank_start - 1) |
7610 ((adjusted_mode->crtc_hblank_end - 1) << 16));
7611 I915_WRITE(HSYNC(cpu_transcoder),
7612 (adjusted_mode->crtc_hsync_start - 1) |
7613 ((adjusted_mode->crtc_hsync_end - 1) << 16));
7614
7615 I915_WRITE(VTOTAL(cpu_transcoder),
7616 (adjusted_mode->crtc_vdisplay - 1) |
7617 ((crtc_vtotal - 1) << 16));
7618 I915_WRITE(VBLANK(cpu_transcoder),
7619 (adjusted_mode->crtc_vblank_start - 1) |
7620 ((crtc_vblank_end - 1) << 16));
7621 I915_WRITE(VSYNC(cpu_transcoder),
7622 (adjusted_mode->crtc_vsync_start - 1) |
7623 ((adjusted_mode->crtc_vsync_end - 1) << 16));
7624
7625 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7626 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7627 * documented on the DDI_FUNC_CTL register description, EDP Input Select
7628 * bits. */
7629 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
7630 (pipe == PIPE_B || pipe == PIPE_C))
7631 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7632
7633 /* pipesrc controls the size that is scaled from, which should
7634 * always be the user's requested size.
7635 */
7636 I915_WRITE(PIPESRC(pipe),
7637 ((intel_crtc->config->pipe_src_w - 1) << 16) |
7638 (intel_crtc->config->pipe_src_h - 1));
7639 }
7640
7641 static void intel_get_pipe_timings(struct intel_crtc *crtc,
7642 struct intel_crtc_state *pipe_config)
7643 {
7644 struct drm_device *dev = crtc->base.dev;
7645 struct drm_i915_private *dev_priv = dev->dev_private;
7646 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7647 uint32_t tmp;
7648
7649 tmp = I915_READ(HTOTAL(cpu_transcoder));
7650 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7651 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
7652 tmp = I915_READ(HBLANK(cpu_transcoder));
7653 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
7654 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
7655 tmp = I915_READ(HSYNC(cpu_transcoder));
7656 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7657 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
7658
7659 tmp = I915_READ(VTOTAL(cpu_transcoder));
7660 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7661 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
7662 tmp = I915_READ(VBLANK(cpu_transcoder));
7663 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
7664 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
7665 tmp = I915_READ(VSYNC(cpu_transcoder));
7666 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7667 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
7668
7669 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
7670 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7671 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7672 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
7673 }
7674
7675 tmp = I915_READ(PIPESRC(crtc->pipe));
7676 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7677 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7678
7679 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7680 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
7681 }
7682
7683 void intel_mode_from_pipe_config(struct drm_display_mode *mode,
7684 struct intel_crtc_state *pipe_config)
7685 {
7686 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7687 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7688 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7689 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
7690
7691 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7692 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7693 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7694 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
7695
7696 mode->flags = pipe_config->base.adjusted_mode.flags;
7697 mode->type = DRM_MODE_TYPE_DRIVER;
7698
7699 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7700 mode->flags |= pipe_config->base.adjusted_mode.flags;
7701
7702 mode->hsync = drm_mode_hsync(mode);
7703 mode->vrefresh = drm_mode_vrefresh(mode);
7704 drm_mode_set_name(mode);
7705 }
7706
7707 static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
7708 {
7709 struct drm_device *dev = intel_crtc->base.dev;
7710 struct drm_i915_private *dev_priv = dev->dev_private;
7711 uint32_t pipeconf;
7712
7713 pipeconf = 0;
7714
7715 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
7716 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
7717 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
7718
7719 if (intel_crtc->config->double_wide)
7720 pipeconf |= PIPECONF_DOUBLE_WIDE;
7721
7722 /* only g4x and later have fancy bpc/dither controls */
7723 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
7724 /* Bspec claims that we can't use dithering for 30bpp pipes. */
7725 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
7726 pipeconf |= PIPECONF_DITHER_EN |
7727 PIPECONF_DITHER_TYPE_SP;
7728
7729 switch (intel_crtc->config->pipe_bpp) {
7730 case 18:
7731 pipeconf |= PIPECONF_6BPC;
7732 break;
7733 case 24:
7734 pipeconf |= PIPECONF_8BPC;
7735 break;
7736 case 30:
7737 pipeconf |= PIPECONF_10BPC;
7738 break;
7739 default:
7740 /* Case prevented by intel_choose_pipe_bpp_dither. */
7741 BUG();
7742 }
7743 }
7744
7745 if (HAS_PIPE_CXSR(dev)) {
7746 if (intel_crtc->lowfreq_avail) {
7747 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
7748 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
7749 } else {
7750 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
7751 }
7752 }
7753
7754 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
7755 if (INTEL_INFO(dev)->gen < 4 ||
7756 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7757 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7758 else
7759 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7760 } else
7761 pipeconf |= PIPECONF_PROGRESSIVE;
7762
7763 if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
7764 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
7765
7766 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
7767 POSTING_READ(PIPECONF(intel_crtc->pipe));
7768 }
7769
7770 static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
7771 struct intel_crtc_state *crtc_state)
7772 {
7773 struct drm_device *dev = crtc->base.dev;
7774 struct drm_i915_private *dev_priv = dev->dev_private;
7775 int refclk, num_connectors = 0;
7776 intel_clock_t clock;
7777 bool ok;
7778 bool is_dsi = false;
7779 struct intel_encoder *encoder;
7780 const intel_limit_t *limit;
7781 struct drm_atomic_state *state = crtc_state->base.state;
7782 struct drm_connector *connector;
7783 struct drm_connector_state *connector_state;
7784 int i;
7785
7786 memset(&crtc_state->dpll_hw_state, 0,
7787 sizeof(crtc_state->dpll_hw_state));
7788
7789 for_each_connector_in_state(state, connector, connector_state, i) {
7790 if (connector_state->crtc != &crtc->base)
7791 continue;
7792
7793 encoder = to_intel_encoder(connector_state->best_encoder);
7794
7795 switch (encoder->type) {
7796 case INTEL_OUTPUT_DSI:
7797 is_dsi = true;
7798 break;
7799 default:
7800 break;
7801 }
7802
7803 num_connectors++;
7804 }
7805
7806 if (is_dsi)
7807 return 0;
7808
7809 if (!crtc_state->clock_set) {
7810 refclk = i9xx_get_refclk(crtc_state, num_connectors);
7811
7812 /*
7813 * Returns a set of divisors for the desired target clock with
7814 * the given refclk, or FALSE. The returned values represent
7815 * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
7816 * 2) / p1 / p2.
7817 */
7818 limit = intel_limit(crtc_state, refclk);
7819 ok = dev_priv->display.find_dpll(limit, crtc_state,
7820 crtc_state->port_clock,
7821 refclk, NULL, &clock);
7822 if (!ok) {
7823 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7824 return -EINVAL;
7825 }
7826
7827 /* Compat-code for transition, will disappear. */
7828 crtc_state->dpll.n = clock.n;
7829 crtc_state->dpll.m1 = clock.m1;
7830 crtc_state->dpll.m2 = clock.m2;
7831 crtc_state->dpll.p1 = clock.p1;
7832 crtc_state->dpll.p2 = clock.p2;
7833 }
7834
7835 if (IS_GEN2(dev)) {
7836 i8xx_compute_dpll(crtc, crtc_state, NULL,
7837 num_connectors);
7838 } else if (IS_CHERRYVIEW(dev)) {
7839 chv_compute_dpll(crtc, crtc_state);
7840 } else if (IS_VALLEYVIEW(dev)) {
7841 vlv_compute_dpll(crtc, crtc_state);
7842 } else {
7843 i9xx_compute_dpll(crtc, crtc_state, NULL,
7844 num_connectors);
7845 }
7846
7847 return 0;
7848 }
7849
7850 static void i9xx_get_pfit_config(struct intel_crtc *crtc,
7851 struct intel_crtc_state *pipe_config)
7852 {
7853 struct drm_device *dev = crtc->base.dev;
7854 struct drm_i915_private *dev_priv = dev->dev_private;
7855 uint32_t tmp;
7856
7857 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
7858 return;
7859
7860 tmp = I915_READ(PFIT_CONTROL);
7861 if (!(tmp & PFIT_ENABLE))
7862 return;
7863
7864 /* Check whether the pfit is attached to our pipe. */
7865 if (INTEL_INFO(dev)->gen < 4) {
7866 if (crtc->pipe != PIPE_B)
7867 return;
7868 } else {
7869 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
7870 return;
7871 }
7872
7873 pipe_config->gmch_pfit.control = tmp;
7874 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
7875 if (INTEL_INFO(dev)->gen < 5)
7876 pipe_config->gmch_pfit.lvds_border_bits =
7877 I915_READ(LVDS) & LVDS_BORDER_ENABLE;
7878 }
7879
7880 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
7881 struct intel_crtc_state *pipe_config)
7882 {
7883 struct drm_device *dev = crtc->base.dev;
7884 struct drm_i915_private *dev_priv = dev->dev_private;
7885 int pipe = pipe_config->cpu_transcoder;
7886 intel_clock_t clock;
7887 u32 mdiv;
7888 int refclk = 100000;
7889
7890 /* In case of MIPI DPLL will not even be used */
7891 if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
7892 return;
7893
7894 mutex_lock(&dev_priv->sb_lock);
7895 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
7896 mutex_unlock(&dev_priv->sb_lock);
7897
7898 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
7899 clock.m2 = mdiv & DPIO_M2DIV_MASK;
7900 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
7901 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
7902 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
7903
7904 pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
7905 }
7906
7907 static void
7908 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
7909 struct intel_initial_plane_config *plane_config)
7910 {
7911 struct drm_device *dev = crtc->base.dev;
7912 struct drm_i915_private *dev_priv = dev->dev_private;
7913 u32 val, base, offset;
7914 int pipe = crtc->pipe, plane = crtc->plane;
7915 int fourcc, pixel_format;
7916 unsigned int aligned_height;
7917 struct drm_framebuffer *fb;
7918 struct intel_framebuffer *intel_fb;
7919
7920 val = I915_READ(DSPCNTR(plane));
7921 if (!(val & DISPLAY_PLANE_ENABLE))
7922 return;
7923
7924 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
7925 if (!intel_fb) {
7926 DRM_DEBUG_KMS("failed to alloc fb\n");
7927 return;
7928 }
7929
7930 fb = &intel_fb->base;
7931
7932 if (INTEL_INFO(dev)->gen >= 4) {
7933 if (val & DISPPLANE_TILED) {
7934 plane_config->tiling = I915_TILING_X;
7935 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7936 }
7937 }
7938
7939 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
7940 fourcc = i9xx_format_to_fourcc(pixel_format);
7941 fb->pixel_format = fourcc;
7942 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
7943
7944 if (INTEL_INFO(dev)->gen >= 4) {
7945 if (plane_config->tiling)
7946 offset = I915_READ(DSPTILEOFF(plane));
7947 else
7948 offset = I915_READ(DSPLINOFF(plane));
7949 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
7950 } else {
7951 base = I915_READ(DSPADDR(plane));
7952 }
7953 plane_config->base = base;
7954
7955 val = I915_READ(PIPESRC(pipe));
7956 fb->width = ((val >> 16) & 0xfff) + 1;
7957 fb->height = ((val >> 0) & 0xfff) + 1;
7958
7959 val = I915_READ(DSPSTRIDE(pipe));
7960 fb->pitches[0] = val & 0xffffffc0;
7961
7962 aligned_height = intel_fb_align_height(dev, fb->height,
7963 fb->pixel_format,
7964 fb->modifier[0]);
7965
7966 plane_config->size = fb->pitches[0] * aligned_height;
7967
7968 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
7969 pipe_name(pipe), plane, fb->width, fb->height,
7970 fb->bits_per_pixel, base, fb->pitches[0],
7971 plane_config->size);
7972
7973 plane_config->fb = intel_fb;
7974 }
7975
7976 static void chv_crtc_clock_get(struct intel_crtc *crtc,
7977 struct intel_crtc_state *pipe_config)
7978 {
7979 struct drm_device *dev = crtc->base.dev;
7980 struct drm_i915_private *dev_priv = dev->dev_private;
7981 int pipe = pipe_config->cpu_transcoder;
7982 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7983 intel_clock_t clock;
7984 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
7985 int refclk = 100000;
7986
7987 mutex_lock(&dev_priv->sb_lock);
7988 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
7989 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
7990 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
7991 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
7992 pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7993 mutex_unlock(&dev_priv->sb_lock);
7994
7995 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
7996 clock.m2 = (pll_dw0 & 0xff) << 22;
7997 if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
7998 clock.m2 |= pll_dw2 & 0x3fffff;
7999 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
8000 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
8001 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
8002
8003 pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
8004 }
8005
8006 static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
8007 struct intel_crtc_state *pipe_config)
8008 {
8009 struct drm_device *dev = crtc->base.dev;
8010 struct drm_i915_private *dev_priv = dev->dev_private;
8011 uint32_t tmp;
8012
8013 if (!intel_display_power_is_enabled(dev_priv,
8014 POWER_DOMAIN_PIPE(crtc->pipe)))
8015 return false;
8016
8017 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
8018 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
8019
8020 tmp = I915_READ(PIPECONF(crtc->pipe));
8021 if (!(tmp & PIPECONF_ENABLE))
8022 return false;
8023
8024 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
8025 switch (tmp & PIPECONF_BPC_MASK) {
8026 case PIPECONF_6BPC:
8027 pipe_config->pipe_bpp = 18;
8028 break;
8029 case PIPECONF_8BPC:
8030 pipe_config->pipe_bpp = 24;
8031 break;
8032 case PIPECONF_10BPC:
8033 pipe_config->pipe_bpp = 30;
8034 break;
8035 default:
8036 break;
8037 }
8038 }
8039
8040 if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
8041 pipe_config->limited_color_range = true;
8042
8043 if (INTEL_INFO(dev)->gen < 4)
8044 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
8045
8046 intel_get_pipe_timings(crtc, pipe_config);
8047
8048 i9xx_get_pfit_config(crtc, pipe_config);
8049
8050 if (INTEL_INFO(dev)->gen >= 4) {
8051 tmp = I915_READ(DPLL_MD(crtc->pipe));
8052 pipe_config->pixel_multiplier =
8053 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
8054 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8055 pipe_config->dpll_hw_state.dpll_md = tmp;
8056 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
8057 tmp = I915_READ(DPLL(crtc->pipe));
8058 pipe_config->pixel_multiplier =
8059 ((tmp & SDVO_MULTIPLIER_MASK)
8060 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
8061 } else {
8062 /* Note that on i915G/GM the pixel multiplier is in the sdvo
8063 * port and will be fixed up in the encoder->get_config
8064 * function. */
8065 pipe_config->pixel_multiplier = 1;
8066 }
8067 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
8068 if (!IS_VALLEYVIEW(dev)) {
8069 /*
8070 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
8071 * on 830. Filter it out here so that we don't
8072 * report errors due to that.
8073 */
8074 if (IS_I830(dev))
8075 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
8076
8077 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
8078 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
8079 } else {
8080 /* Mask out read-only status bits. */
8081 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
8082 DPLL_PORTC_READY_MASK |
8083 DPLL_PORTB_READY_MASK);
8084 }
8085
8086 if (IS_CHERRYVIEW(dev))
8087 chv_crtc_clock_get(crtc, pipe_config);
8088 else if (IS_VALLEYVIEW(dev))
8089 vlv_crtc_clock_get(crtc, pipe_config);
8090 else
8091 i9xx_crtc_clock_get(crtc, pipe_config);
8092
8093 /*
8094 * Normally the dotclock is filled in by the encoder .get_config()
8095 * but in case the pipe is enabled w/o any ports we need a sane
8096 * default.
8097 */
8098 pipe_config->base.adjusted_mode.crtc_clock =
8099 pipe_config->port_clock / pipe_config->pixel_multiplier;
8100
8101 return true;
8102 }
8103
8104 static void ironlake_init_pch_refclk(struct drm_device *dev)
8105 {
8106 struct drm_i915_private *dev_priv = dev->dev_private;
8107 struct intel_encoder *encoder;
8108 u32 val, final;
8109 bool has_lvds = false;
8110 bool has_cpu_edp = false;
8111 bool has_panel = false;
8112 bool has_ck505 = false;
8113 bool can_ssc = false;
8114
8115 /* We need to take the global config into account */
8116 for_each_intel_encoder(dev, encoder) {
8117 switch (encoder->type) {
8118 case INTEL_OUTPUT_LVDS:
8119 has_panel = true;
8120 has_lvds = true;
8121 break;
8122 case INTEL_OUTPUT_EDP:
8123 has_panel = true;
8124 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
8125 has_cpu_edp = true;
8126 break;
8127 default:
8128 break;
8129 }
8130 }
8131
8132 if (HAS_PCH_IBX(dev)) {
8133 has_ck505 = dev_priv->vbt.display_clock_mode;
8134 can_ssc = has_ck505;
8135 } else {
8136 has_ck505 = false;
8137 can_ssc = true;
8138 }
8139
8140 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
8141 has_panel, has_lvds, has_ck505);
8142
8143 /* Ironlake: try to setup display ref clock before DPLL
8144 * enabling. This is only under driver's control after
8145 * PCH B stepping, previous chipset stepping should be
8146 * ignoring this setting.
8147 */
8148 val = I915_READ(PCH_DREF_CONTROL);
8149
8150 /* As we must carefully and slowly disable/enable each source in turn,
8151 * compute the final state we want first and check if we need to
8152 * make any changes at all.
8153 */
8154 final = val;
8155 final &= ~DREF_NONSPREAD_SOURCE_MASK;
8156 if (has_ck505)
8157 final |= DREF_NONSPREAD_CK505_ENABLE;
8158 else
8159 final |= DREF_NONSPREAD_SOURCE_ENABLE;
8160
8161 final &= ~DREF_SSC_SOURCE_MASK;
8162 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8163 final &= ~DREF_SSC1_ENABLE;
8164
8165 if (has_panel) {
8166 final |= DREF_SSC_SOURCE_ENABLE;
8167
8168 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8169 final |= DREF_SSC1_ENABLE;
8170
8171 if (has_cpu_edp) {
8172 if (intel_panel_use_ssc(dev_priv) && can_ssc)
8173 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8174 else
8175 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8176 } else
8177 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8178 } else {
8179 final |= DREF_SSC_SOURCE_DISABLE;
8180 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8181 }
8182
8183 if (final == val)
8184 return;
8185
8186 /* Always enable nonspread source */
8187 val &= ~DREF_NONSPREAD_SOURCE_MASK;
8188
8189 if (has_ck505)
8190 val |= DREF_NONSPREAD_CK505_ENABLE;
8191 else
8192 val |= DREF_NONSPREAD_SOURCE_ENABLE;
8193
8194 if (has_panel) {
8195 val &= ~DREF_SSC_SOURCE_MASK;
8196 val |= DREF_SSC_SOURCE_ENABLE;
8197
8198 /* SSC must be turned on before enabling the CPU output */
8199 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8200 DRM_DEBUG_KMS("Using SSC on panel\n");
8201 val |= DREF_SSC1_ENABLE;
8202 } else
8203 val &= ~DREF_SSC1_ENABLE;
8204
8205 /* Get SSC going before enabling the outputs */
8206 I915_WRITE(PCH_DREF_CONTROL, val);
8207 POSTING_READ(PCH_DREF_CONTROL);
8208 udelay(200);
8209
8210 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8211
8212 /* Enable CPU source on CPU attached eDP */
8213 if (has_cpu_edp) {
8214 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
8215 DRM_DEBUG_KMS("Using SSC on eDP\n");
8216 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
8217 } else
8218 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
8219 } else
8220 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8221
8222 I915_WRITE(PCH_DREF_CONTROL, val);
8223 POSTING_READ(PCH_DREF_CONTROL);
8224 udelay(200);
8225 } else {
8226 DRM_DEBUG_KMS("Disabling SSC entirely\n");
8227
8228 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
8229
8230 /* Turn off CPU output */
8231 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
8232
8233 I915_WRITE(PCH_DREF_CONTROL, val);
8234 POSTING_READ(PCH_DREF_CONTROL);
8235 udelay(200);
8236
8237 /* Turn off the SSC source */
8238 val &= ~DREF_SSC_SOURCE_MASK;
8239 val |= DREF_SSC_SOURCE_DISABLE;
8240
8241 /* Turn off SSC1 */
8242 val &= ~DREF_SSC1_ENABLE;
8243
8244 I915_WRITE(PCH_DREF_CONTROL, val);
8245 POSTING_READ(PCH_DREF_CONTROL);
8246 udelay(200);
8247 }
8248
8249 BUG_ON(val != final);
8250 }
8251
8252 static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
8253 {
8254 uint32_t tmp;
8255
8256 tmp = I915_READ(SOUTH_CHICKEN2);
8257 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
8258 I915_WRITE(SOUTH_CHICKEN2, tmp);
8259
8260 if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
8261 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
8262 DRM_ERROR("FDI mPHY reset assert timeout\n");
8263
8264 tmp = I915_READ(SOUTH_CHICKEN2);
8265 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
8266 I915_WRITE(SOUTH_CHICKEN2, tmp);
8267
8268 if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
8269 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
8270 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
8271 }
8272
8273 /* WaMPhyProgramming:hsw */
8274 static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
8275 {
8276 uint32_t tmp;
8277
8278 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
8279 tmp &= ~(0xFF << 24);
8280 tmp |= (0x12 << 24);
8281 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
8282
8283 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
8284 tmp |= (1 << 11);
8285 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
8286
8287 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
8288 tmp |= (1 << 11);
8289 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
8290
8291 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
8292 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8293 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
8294
8295 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
8296 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
8297 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
8298
8299 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8300 tmp &= ~(7 << 13);
8301 tmp |= (5 << 13);
8302 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
8303
8304 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8305 tmp &= ~(7 << 13);
8306 tmp |= (5 << 13);
8307 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
8308
8309 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8310 tmp &= ~0xFF;
8311 tmp |= 0x1C;
8312 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8313
8314 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8315 tmp &= ~0xFF;
8316 tmp |= 0x1C;
8317 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8318
8319 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8320 tmp &= ~(0xFF << 16);
8321 tmp |= (0x1C << 16);
8322 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8323
8324 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8325 tmp &= ~(0xFF << 16);
8326 tmp |= (0x1C << 16);
8327 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8328
8329 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8330 tmp |= (1 << 27);
8331 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
8332
8333 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8334 tmp |= (1 << 27);
8335 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
8336
8337 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8338 tmp &= ~(0xF << 28);
8339 tmp |= (4 << 28);
8340 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
8341
8342 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8343 tmp &= ~(0xF << 28);
8344 tmp |= (4 << 28);
8345 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
8346 }
8347
8348 /* Implements 3 different sequences from BSpec chapter "Display iCLK
8349 * Programming" based on the parameters passed:
8350 * - Sequence to enable CLKOUT_DP
8351 * - Sequence to enable CLKOUT_DP without spread
8352 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8353 */
8354 static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
8355 bool with_fdi)
8356 {
8357 struct drm_i915_private *dev_priv = dev->dev_private;
8358 uint32_t reg, tmp;
8359
8360 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8361 with_spread = true;
8362 if (WARN(HAS_PCH_LPT_LP(dev) && with_fdi, "LP PCH doesn't have FDI\n"))
8363 with_fdi = false;
8364
8365 mutex_lock(&dev_priv->sb_lock);
8366
8367 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8368 tmp &= ~SBI_SSCCTL_DISABLE;
8369 tmp |= SBI_SSCCTL_PATHALT;
8370 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8371
8372 udelay(24);
8373
8374 if (with_spread) {
8375 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8376 tmp &= ~SBI_SSCCTL_PATHALT;
8377 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8378
8379 if (with_fdi) {
8380 lpt_reset_fdi_mphy(dev_priv);
8381 lpt_program_fdi_mphy(dev_priv);
8382 }
8383 }
8384
8385 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8386 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8387 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8388 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8389
8390 mutex_unlock(&dev_priv->sb_lock);
8391 }
8392
8393 /* Sequence to disable CLKOUT_DP */
8394 static void lpt_disable_clkout_dp(struct drm_device *dev)
8395 {
8396 struct drm_i915_private *dev_priv = dev->dev_private;
8397 uint32_t reg, tmp;
8398
8399 mutex_lock(&dev_priv->sb_lock);
8400
8401 reg = HAS_PCH_LPT_LP(dev) ? SBI_GEN0 : SBI_DBUFF0;
8402 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8403 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8404 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8405
8406 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8407 if (!(tmp & SBI_SSCCTL_DISABLE)) {
8408 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8409 tmp |= SBI_SSCCTL_PATHALT;
8410 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8411 udelay(32);
8412 }
8413 tmp |= SBI_SSCCTL_DISABLE;
8414 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8415 }
8416
8417 mutex_unlock(&dev_priv->sb_lock);
8418 }
8419
8420 static void lpt_init_pch_refclk(struct drm_device *dev)
8421 {
8422 struct intel_encoder *encoder;
8423 bool has_vga = false;
8424
8425 for_each_intel_encoder(dev, encoder) {
8426 switch (encoder->type) {
8427 case INTEL_OUTPUT_ANALOG:
8428 has_vga = true;
8429 break;
8430 default:
8431 break;
8432 }
8433 }
8434
8435 if (has_vga)
8436 lpt_enable_clkout_dp(dev, true, true);
8437 else
8438 lpt_disable_clkout_dp(dev);
8439 }
8440
8441 /*
8442 * Initialize reference clocks when the driver loads
8443 */
8444 void intel_init_pch_refclk(struct drm_device *dev)
8445 {
8446 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
8447 ironlake_init_pch_refclk(dev);
8448 else if (HAS_PCH_LPT(dev))
8449 lpt_init_pch_refclk(dev);
8450 }
8451
8452 static int ironlake_get_refclk(struct intel_crtc_state *crtc_state)
8453 {
8454 struct drm_device *dev = crtc_state->base.crtc->dev;
8455 struct drm_i915_private *dev_priv = dev->dev_private;
8456 struct drm_atomic_state *state = crtc_state->base.state;
8457 struct drm_connector *connector;
8458 struct drm_connector_state *connector_state;
8459 struct intel_encoder *encoder;
8460 int num_connectors = 0, i;
8461 bool is_lvds = false;
8462
8463 for_each_connector_in_state(state, connector, connector_state, i) {
8464 if (connector_state->crtc != crtc_state->base.crtc)
8465 continue;
8466
8467 encoder = to_intel_encoder(connector_state->best_encoder);
8468
8469 switch (encoder->type) {
8470 case INTEL_OUTPUT_LVDS:
8471 is_lvds = true;
8472 break;
8473 default:
8474 break;
8475 }
8476 num_connectors++;
8477 }
8478
8479 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
8480 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
8481 dev_priv->vbt.lvds_ssc_freq);
8482 return dev_priv->vbt.lvds_ssc_freq;
8483 }
8484
8485 return 120000;
8486 }
8487
8488 static void ironlake_set_pipeconf(struct drm_crtc *crtc)
8489 {
8490 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
8491 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8492 int pipe = intel_crtc->pipe;
8493 uint32_t val;
8494
8495 val = 0;
8496
8497 switch (intel_crtc->config->pipe_bpp) {
8498 case 18:
8499 val |= PIPECONF_6BPC;
8500 break;
8501 case 24:
8502 val |= PIPECONF_8BPC;
8503 break;
8504 case 30:
8505 val |= PIPECONF_10BPC;
8506 break;
8507 case 36:
8508 val |= PIPECONF_12BPC;
8509 break;
8510 default:
8511 /* Case prevented by intel_choose_pipe_bpp_dither. */
8512 BUG();
8513 }
8514
8515 if (intel_crtc->config->dither)
8516 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8517
8518 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8519 val |= PIPECONF_INTERLACED_ILK;
8520 else
8521 val |= PIPECONF_PROGRESSIVE;
8522
8523 if (intel_crtc->config->limited_color_range)
8524 val |= PIPECONF_COLOR_RANGE_SELECT;
8525
8526 I915_WRITE(PIPECONF(pipe), val);
8527 POSTING_READ(PIPECONF(pipe));
8528 }
8529
8530 /*
8531 * Set up the pipe CSC unit.
8532 *
8533 * Currently only full range RGB to limited range RGB conversion
8534 * is supported, but eventually this should handle various
8535 * RGB<->YCbCr scenarios as well.
8536 */
8537 static void intel_set_pipe_csc(struct drm_crtc *crtc)
8538 {
8539 struct drm_device *dev = crtc->dev;
8540 struct drm_i915_private *dev_priv = dev->dev_private;
8541 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8542 int pipe = intel_crtc->pipe;
8543 uint16_t coeff = 0x7800; /* 1.0 */
8544
8545 /*
8546 * TODO: Check what kind of values actually come out of the pipe
8547 * with these coeff/postoff values and adjust to get the best
8548 * accuracy. Perhaps we even need to take the bpc value into
8549 * consideration.
8550 */
8551
8552 if (intel_crtc->config->limited_color_range)
8553 coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
8554
8555 /*
8556 * GY/GU and RY/RU should be the other way around according
8557 * to BSpec, but reality doesn't agree. Just set them up in
8558 * a way that results in the correct picture.
8559 */
8560 I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
8561 I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
8562
8563 I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
8564 I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
8565
8566 I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
8567 I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
8568
8569 I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
8570 I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
8571 I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
8572
8573 if (INTEL_INFO(dev)->gen > 6) {
8574 uint16_t postoff = 0;
8575
8576 if (intel_crtc->config->limited_color_range)
8577 postoff = (16 * (1 << 12) / 255) & 0x1fff;
8578
8579 I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
8580 I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
8581 I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
8582
8583 I915_WRITE(PIPE_CSC_MODE(pipe), 0);
8584 } else {
8585 uint32_t mode = CSC_MODE_YUV_TO_RGB;
8586
8587 if (intel_crtc->config->limited_color_range)
8588 mode |= CSC_BLACK_SCREEN_OFFSET;
8589
8590 I915_WRITE(PIPE_CSC_MODE(pipe), mode);
8591 }
8592 }
8593
8594 static void haswell_set_pipeconf(struct drm_crtc *crtc)
8595 {
8596 struct drm_device *dev = crtc->dev;
8597 struct drm_i915_private *dev_priv = dev->dev_private;
8598 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8599 enum pipe pipe = intel_crtc->pipe;
8600 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
8601 uint32_t val;
8602
8603 val = 0;
8604
8605 if (IS_HASWELL(dev) && intel_crtc->config->dither)
8606 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8607
8608 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
8609 val |= PIPECONF_INTERLACED_ILK;
8610 else
8611 val |= PIPECONF_PROGRESSIVE;
8612
8613 I915_WRITE(PIPECONF(cpu_transcoder), val);
8614 POSTING_READ(PIPECONF(cpu_transcoder));
8615
8616 I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
8617 POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
8618
8619 if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
8620 val = 0;
8621
8622 switch (intel_crtc->config->pipe_bpp) {
8623 case 18:
8624 val |= PIPEMISC_DITHER_6_BPC;
8625 break;
8626 case 24:
8627 val |= PIPEMISC_DITHER_8_BPC;
8628 break;
8629 case 30:
8630 val |= PIPEMISC_DITHER_10_BPC;
8631 break;
8632 case 36:
8633 val |= PIPEMISC_DITHER_12_BPC;
8634 break;
8635 default:
8636 /* Case prevented by pipe_config_set_bpp. */
8637 BUG();
8638 }
8639
8640 if (intel_crtc->config->dither)
8641 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8642
8643 I915_WRITE(PIPEMISC(pipe), val);
8644 }
8645 }
8646
8647 static bool ironlake_compute_clocks(struct drm_crtc *crtc,
8648 struct intel_crtc_state *crtc_state,
8649 intel_clock_t *clock,
8650 bool *has_reduced_clock,
8651 intel_clock_t *reduced_clock)
8652 {
8653 struct drm_device *dev = crtc->dev;
8654 struct drm_i915_private *dev_priv = dev->dev_private;
8655 int refclk;
8656 const intel_limit_t *limit;
8657 bool ret;
8658
8659 refclk = ironlake_get_refclk(crtc_state);
8660
8661 /*
8662 * Returns a set of divisors for the desired target clock with the given
8663 * refclk, or FALSE. The returned values represent the clock equation:
8664 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
8665 */
8666 limit = intel_limit(crtc_state, refclk);
8667 ret = dev_priv->display.find_dpll(limit, crtc_state,
8668 crtc_state->port_clock,
8669 refclk, NULL, clock);
8670 if (!ret)
8671 return false;
8672
8673 return true;
8674 }
8675
8676 int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8677 {
8678 /*
8679 * Account for spread spectrum to avoid
8680 * oversubscribing the link. Max center spread
8681 * is 2.5%; use 5% for safety's sake.
8682 */
8683 u32 bps = target_clock * bpp * 21 / 20;
8684 return DIV_ROUND_UP(bps, link_bw * 8);
8685 }
8686
8687 static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
8688 {
8689 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
8690 }
8691
8692 static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
8693 struct intel_crtc_state *crtc_state,
8694 u32 *fp,
8695 intel_clock_t *reduced_clock, u32 *fp2)
8696 {
8697 struct drm_crtc *crtc = &intel_crtc->base;
8698 struct drm_device *dev = crtc->dev;
8699 struct drm_i915_private *dev_priv = dev->dev_private;
8700 struct drm_atomic_state *state = crtc_state->base.state;
8701 struct drm_connector *connector;
8702 struct drm_connector_state *connector_state;
8703 struct intel_encoder *encoder;
8704 uint32_t dpll;
8705 int factor, num_connectors = 0, i;
8706 bool is_lvds = false, is_sdvo = false;
8707
8708 for_each_connector_in_state(state, connector, connector_state, i) {
8709 if (connector_state->crtc != crtc_state->base.crtc)
8710 continue;
8711
8712 encoder = to_intel_encoder(connector_state->best_encoder);
8713
8714 switch (encoder->type) {
8715 case INTEL_OUTPUT_LVDS:
8716 is_lvds = true;
8717 break;
8718 case INTEL_OUTPUT_SDVO:
8719 case INTEL_OUTPUT_HDMI:
8720 is_sdvo = true;
8721 break;
8722 default:
8723 break;
8724 }
8725
8726 num_connectors++;
8727 }
8728
8729 /* Enable autotuning of the PLL clock (if permissible) */
8730 factor = 21;
8731 if (is_lvds) {
8732 if ((intel_panel_use_ssc(dev_priv) &&
8733 dev_priv->vbt.lvds_ssc_freq == 100000) ||
8734 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
8735 factor = 25;
8736 } else if (crtc_state->sdvo_tv_clock)
8737 factor = 20;
8738
8739 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
8740 *fp |= FP_CB_TUNE;
8741
8742 if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
8743 *fp2 |= FP_CB_TUNE;
8744
8745 dpll = 0;
8746
8747 if (is_lvds)
8748 dpll |= DPLLB_MODE_LVDS;
8749 else
8750 dpll |= DPLLB_MODE_DAC_SERIAL;
8751
8752 dpll |= (crtc_state->pixel_multiplier - 1)
8753 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
8754
8755 if (is_sdvo)
8756 dpll |= DPLL_SDVO_HIGH_SPEED;
8757 if (crtc_state->has_dp_encoder)
8758 dpll |= DPLL_SDVO_HIGH_SPEED;
8759
8760 /* compute bitmask from p1 value */
8761 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
8762 /* also FPA1 */
8763 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
8764
8765 switch (crtc_state->dpll.p2) {
8766 case 5:
8767 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
8768 break;
8769 case 7:
8770 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
8771 break;
8772 case 10:
8773 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
8774 break;
8775 case 14:
8776 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
8777 break;
8778 }
8779
8780 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
8781 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
8782 else
8783 dpll |= PLL_REF_INPUT_DREFCLK;
8784
8785 return dpll | DPLL_VCO_ENABLE;
8786 }
8787
8788 static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
8789 struct intel_crtc_state *crtc_state)
8790 {
8791 struct drm_device *dev = crtc->base.dev;
8792 intel_clock_t clock, reduced_clock;
8793 u32 dpll = 0, fp = 0, fp2 = 0;
8794 bool ok, has_reduced_clock = false;
8795 bool is_lvds = false;
8796 struct intel_shared_dpll *pll;
8797
8798 memset(&crtc_state->dpll_hw_state, 0,
8799 sizeof(crtc_state->dpll_hw_state));
8800
8801 is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
8802
8803 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
8804 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
8805
8806 ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
8807 &has_reduced_clock, &reduced_clock);
8808 if (!ok && !crtc_state->clock_set) {
8809 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8810 return -EINVAL;
8811 }
8812 /* Compat-code for transition, will disappear. */
8813 if (!crtc_state->clock_set) {
8814 crtc_state->dpll.n = clock.n;
8815 crtc_state->dpll.m1 = clock.m1;
8816 crtc_state->dpll.m2 = clock.m2;
8817 crtc_state->dpll.p1 = clock.p1;
8818 crtc_state->dpll.p2 = clock.p2;
8819 }
8820
8821 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
8822 if (crtc_state->has_pch_encoder) {
8823 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
8824 if (has_reduced_clock)
8825 fp2 = i9xx_dpll_compute_fp(&reduced_clock);
8826
8827 dpll = ironlake_compute_dpll(crtc, crtc_state,
8828 &fp, &reduced_clock,
8829 has_reduced_clock ? &fp2 : NULL);
8830
8831 crtc_state->dpll_hw_state.dpll = dpll;
8832 crtc_state->dpll_hw_state.fp0 = fp;
8833 if (has_reduced_clock)
8834 crtc_state->dpll_hw_state.fp1 = fp2;
8835 else
8836 crtc_state->dpll_hw_state.fp1 = fp;
8837
8838 pll = intel_get_shared_dpll(crtc, crtc_state);
8839 if (pll == NULL) {
8840 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
8841 pipe_name(crtc->pipe));
8842 return -EINVAL;
8843 }
8844 }
8845
8846 if (is_lvds && has_reduced_clock)
8847 crtc->lowfreq_avail = true;
8848 else
8849 crtc->lowfreq_avail = false;
8850
8851 return 0;
8852 }
8853
8854 static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
8855 struct intel_link_m_n *m_n)
8856 {
8857 struct drm_device *dev = crtc->base.dev;
8858 struct drm_i915_private *dev_priv = dev->dev_private;
8859 enum pipe pipe = crtc->pipe;
8860
8861 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
8862 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
8863 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
8864 & ~TU_SIZE_MASK;
8865 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
8866 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
8867 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8868 }
8869
8870 static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
8871 enum transcoder transcoder,
8872 struct intel_link_m_n *m_n,
8873 struct intel_link_m_n *m2_n2)
8874 {
8875 struct drm_device *dev = crtc->base.dev;
8876 struct drm_i915_private *dev_priv = dev->dev_private;
8877 enum pipe pipe = crtc->pipe;
8878
8879 if (INTEL_INFO(dev)->gen >= 5) {
8880 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
8881 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
8882 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
8883 & ~TU_SIZE_MASK;
8884 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
8885 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
8886 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8887 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
8888 * gen < 8) and if DRRS is supported (to make sure the
8889 * registers are not unnecessarily read).
8890 */
8891 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
8892 crtc->config->has_drrs) {
8893 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
8894 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
8895 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
8896 & ~TU_SIZE_MASK;
8897 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
8898 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
8899 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8900 }
8901 } else {
8902 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
8903 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
8904 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
8905 & ~TU_SIZE_MASK;
8906 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
8907 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
8908 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8909 }
8910 }
8911
8912 void intel_dp_get_m_n(struct intel_crtc *crtc,
8913 struct intel_crtc_state *pipe_config)
8914 {
8915 if (pipe_config->has_pch_encoder)
8916 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
8917 else
8918 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8919 &pipe_config->dp_m_n,
8920 &pipe_config->dp_m2_n2);
8921 }
8922
8923 static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
8924 struct intel_crtc_state *pipe_config)
8925 {
8926 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
8927 &pipe_config->fdi_m_n, NULL);
8928 }
8929
8930 static void skylake_get_pfit_config(struct intel_crtc *crtc,
8931 struct intel_crtc_state *pipe_config)
8932 {
8933 struct drm_device *dev = crtc->base.dev;
8934 struct drm_i915_private *dev_priv = dev->dev_private;
8935 struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
8936 uint32_t ps_ctrl = 0;
8937 int id = -1;
8938 int i;
8939
8940 /* find scaler attached to this pipe */
8941 for (i = 0; i < crtc->num_scalers; i++) {
8942 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
8943 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
8944 id = i;
8945 pipe_config->pch_pfit.enabled = true;
8946 pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
8947 pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
8948 break;
8949 }
8950 }
8951
8952 scaler_state->scaler_id = id;
8953 if (id >= 0) {
8954 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
8955 } else {
8956 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
8957 }
8958 }
8959
8960 static void
8961 skylake_get_initial_plane_config(struct intel_crtc *crtc,
8962 struct intel_initial_plane_config *plane_config)
8963 {
8964 struct drm_device *dev = crtc->base.dev;
8965 struct drm_i915_private *dev_priv = dev->dev_private;
8966 u32 val, base, offset, stride_mult, tiling;
8967 int pipe = crtc->pipe;
8968 int fourcc, pixel_format;
8969 unsigned int aligned_height;
8970 struct drm_framebuffer *fb;
8971 struct intel_framebuffer *intel_fb;
8972
8973 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
8974 if (!intel_fb) {
8975 DRM_DEBUG_KMS("failed to alloc fb\n");
8976 return;
8977 }
8978
8979 fb = &intel_fb->base;
8980
8981 val = I915_READ(PLANE_CTL(pipe, 0));
8982 if (!(val & PLANE_CTL_ENABLE))
8983 goto error;
8984
8985 pixel_format = val & PLANE_CTL_FORMAT_MASK;
8986 fourcc = skl_format_to_fourcc(pixel_format,
8987 val & PLANE_CTL_ORDER_RGBX,
8988 val & PLANE_CTL_ALPHA_MASK);
8989 fb->pixel_format = fourcc;
8990 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
8991
8992 tiling = val & PLANE_CTL_TILED_MASK;
8993 switch (tiling) {
8994 case PLANE_CTL_TILED_LINEAR:
8995 fb->modifier[0] = DRM_FORMAT_MOD_NONE;
8996 break;
8997 case PLANE_CTL_TILED_X:
8998 plane_config->tiling = I915_TILING_X;
8999 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9000 break;
9001 case PLANE_CTL_TILED_Y:
9002 fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
9003 break;
9004 case PLANE_CTL_TILED_YF:
9005 fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
9006 break;
9007 default:
9008 MISSING_CASE(tiling);
9009 goto error;
9010 }
9011
9012 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
9013 plane_config->base = base;
9014
9015 offset = I915_READ(PLANE_OFFSET(pipe, 0));
9016
9017 val = I915_READ(PLANE_SIZE(pipe, 0));
9018 fb->height = ((val >> 16) & 0xfff) + 1;
9019 fb->width = ((val >> 0) & 0x1fff) + 1;
9020
9021 val = I915_READ(PLANE_STRIDE(pipe, 0));
9022 stride_mult = intel_fb_stride_alignment(dev, fb->modifier[0],
9023 fb->pixel_format);
9024 fb->pitches[0] = (val & 0x3ff) * stride_mult;
9025
9026 aligned_height = intel_fb_align_height(dev, fb->height,
9027 fb->pixel_format,
9028 fb->modifier[0]);
9029
9030 plane_config->size = fb->pitches[0] * aligned_height;
9031
9032 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9033 pipe_name(pipe), fb->width, fb->height,
9034 fb->bits_per_pixel, base, fb->pitches[0],
9035 plane_config->size);
9036
9037 plane_config->fb = intel_fb;
9038 return;
9039
9040 error:
9041 kfree(fb);
9042 }
9043
9044 static void ironlake_get_pfit_config(struct intel_crtc *crtc,
9045 struct intel_crtc_state *pipe_config)
9046 {
9047 struct drm_device *dev = crtc->base.dev;
9048 struct drm_i915_private *dev_priv = dev->dev_private;
9049 uint32_t tmp;
9050
9051 tmp = I915_READ(PF_CTL(crtc->pipe));
9052
9053 if (tmp & PF_ENABLE) {
9054 pipe_config->pch_pfit.enabled = true;
9055 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
9056 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
9057
9058 /* We currently do not free assignements of panel fitters on
9059 * ivb/hsw (since we don't use the higher upscaling modes which
9060 * differentiates them) so just WARN about this case for now. */
9061 if (IS_GEN7(dev)) {
9062 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
9063 PF_PIPE_SEL_IVB(crtc->pipe));
9064 }
9065 }
9066 }
9067
9068 static void
9069 ironlake_get_initial_plane_config(struct intel_crtc *crtc,
9070 struct intel_initial_plane_config *plane_config)
9071 {
9072 struct drm_device *dev = crtc->base.dev;
9073 struct drm_i915_private *dev_priv = dev->dev_private;
9074 u32 val, base, offset;
9075 int pipe = crtc->pipe;
9076 int fourcc, pixel_format;
9077 unsigned int aligned_height;
9078 struct drm_framebuffer *fb;
9079 struct intel_framebuffer *intel_fb;
9080
9081 val = I915_READ(DSPCNTR(pipe));
9082 if (!(val & DISPLAY_PLANE_ENABLE))
9083 return;
9084
9085 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9086 if (!intel_fb) {
9087 DRM_DEBUG_KMS("failed to alloc fb\n");
9088 return;
9089 }
9090
9091 fb = &intel_fb->base;
9092
9093 if (INTEL_INFO(dev)->gen >= 4) {
9094 if (val & DISPPLANE_TILED) {
9095 plane_config->tiling = I915_TILING_X;
9096 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
9097 }
9098 }
9099
9100 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
9101 fourcc = i9xx_format_to_fourcc(pixel_format);
9102 fb->pixel_format = fourcc;
9103 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
9104
9105 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
9106 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
9107 offset = I915_READ(DSPOFFSET(pipe));
9108 } else {
9109 if (plane_config->tiling)
9110 offset = I915_READ(DSPTILEOFF(pipe));
9111 else
9112 offset = I915_READ(DSPLINOFF(pipe));
9113 }
9114 plane_config->base = base;
9115
9116 val = I915_READ(PIPESRC(pipe));
9117 fb->width = ((val >> 16) & 0xfff) + 1;
9118 fb->height = ((val >> 0) & 0xfff) + 1;
9119
9120 val = I915_READ(DSPSTRIDE(pipe));
9121 fb->pitches[0] = val & 0xffffffc0;
9122
9123 aligned_height = intel_fb_align_height(dev, fb->height,
9124 fb->pixel_format,
9125 fb->modifier[0]);
9126
9127 plane_config->size = fb->pitches[0] * aligned_height;
9128
9129 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
9130 pipe_name(pipe), fb->width, fb->height,
9131 fb->bits_per_pixel, base, fb->pitches[0],
9132 plane_config->size);
9133
9134 plane_config->fb = intel_fb;
9135 }
9136
9137 static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
9138 struct intel_crtc_state *pipe_config)
9139 {
9140 struct drm_device *dev = crtc->base.dev;
9141 struct drm_i915_private *dev_priv = dev->dev_private;
9142 uint32_t tmp;
9143
9144 if (!intel_display_power_is_enabled(dev_priv,
9145 POWER_DOMAIN_PIPE(crtc->pipe)))
9146 return false;
9147
9148 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9149 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9150
9151 tmp = I915_READ(PIPECONF(crtc->pipe));
9152 if (!(tmp & PIPECONF_ENABLE))
9153 return false;
9154
9155 switch (tmp & PIPECONF_BPC_MASK) {
9156 case PIPECONF_6BPC:
9157 pipe_config->pipe_bpp = 18;
9158 break;
9159 case PIPECONF_8BPC:
9160 pipe_config->pipe_bpp = 24;
9161 break;
9162 case PIPECONF_10BPC:
9163 pipe_config->pipe_bpp = 30;
9164 break;
9165 case PIPECONF_12BPC:
9166 pipe_config->pipe_bpp = 36;
9167 break;
9168 default:
9169 break;
9170 }
9171
9172 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
9173 pipe_config->limited_color_range = true;
9174
9175 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
9176 struct intel_shared_dpll *pll;
9177
9178 pipe_config->has_pch_encoder = true;
9179
9180 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
9181 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9182 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9183
9184 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9185
9186 if (HAS_PCH_IBX(dev_priv->dev)) {
9187 pipe_config->shared_dpll =
9188 (enum intel_dpll_id) crtc->pipe;
9189 } else {
9190 tmp = I915_READ(PCH_DPLL_SEL);
9191 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
9192 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
9193 else
9194 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
9195 }
9196
9197 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9198
9199 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9200 &pipe_config->dpll_hw_state));
9201
9202 tmp = pipe_config->dpll_hw_state.dpll;
9203 pipe_config->pixel_multiplier =
9204 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
9205 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
9206
9207 ironlake_pch_clock_get(crtc, pipe_config);
9208 } else {
9209 pipe_config->pixel_multiplier = 1;
9210 }
9211
9212 intel_get_pipe_timings(crtc, pipe_config);
9213
9214 ironlake_get_pfit_config(crtc, pipe_config);
9215
9216 return true;
9217 }
9218
9219 static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
9220 {
9221 struct drm_device *dev = dev_priv->dev;
9222 struct intel_crtc *crtc;
9223
9224 for_each_intel_crtc(dev, crtc)
9225 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
9226 pipe_name(crtc->pipe));
9227
9228 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
9229 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
9230 I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
9231 I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
9232 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
9233 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
9234 "CPU PWM1 enabled\n");
9235 if (IS_HASWELL(dev))
9236 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
9237 "CPU PWM2 enabled\n");
9238 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
9239 "PCH PWM1 enabled\n");
9240 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
9241 "Utility pin enabled\n");
9242 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
9243
9244 /*
9245 * In theory we can still leave IRQs enabled, as long as only the HPD
9246 * interrupts remain enabled. We used to check for that, but since it's
9247 * gen-specific and since we only disable LCPLL after we fully disable
9248 * the interrupts, the check below should be enough.
9249 */
9250 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
9251 }
9252
9253 static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
9254 {
9255 struct drm_device *dev = dev_priv->dev;
9256
9257 if (IS_HASWELL(dev))
9258 return I915_READ(D_COMP_HSW);
9259 else
9260 return I915_READ(D_COMP_BDW);
9261 }
9262
9263 static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
9264 {
9265 struct drm_device *dev = dev_priv->dev;
9266
9267 if (IS_HASWELL(dev)) {
9268 mutex_lock(&dev_priv->rps.hw_lock);
9269 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
9270 val))
9271 DRM_ERROR("Failed to write to D_COMP\n");
9272 mutex_unlock(&dev_priv->rps.hw_lock);
9273 } else {
9274 I915_WRITE(D_COMP_BDW, val);
9275 POSTING_READ(D_COMP_BDW);
9276 }
9277 }
9278
9279 /*
9280 * This function implements pieces of two sequences from BSpec:
9281 * - Sequence for display software to disable LCPLL
9282 * - Sequence for display software to allow package C8+
9283 * The steps implemented here are just the steps that actually touch the LCPLL
9284 * register. Callers should take care of disabling all the display engine
9285 * functions, doing the mode unset, fixing interrupts, etc.
9286 */
9287 static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
9288 bool switch_to_fclk, bool allow_power_down)
9289 {
9290 uint32_t val;
9291
9292 assert_can_disable_lcpll(dev_priv);
9293
9294 val = I915_READ(LCPLL_CTL);
9295
9296 if (switch_to_fclk) {
9297 val |= LCPLL_CD_SOURCE_FCLK;
9298 I915_WRITE(LCPLL_CTL, val);
9299
9300 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9301 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9302 DRM_ERROR("Switching to FCLK failed\n");
9303
9304 val = I915_READ(LCPLL_CTL);
9305 }
9306
9307 val |= LCPLL_PLL_DISABLE;
9308 I915_WRITE(LCPLL_CTL, val);
9309 POSTING_READ(LCPLL_CTL);
9310
9311 if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
9312 DRM_ERROR("LCPLL still locked\n");
9313
9314 val = hsw_read_dcomp(dev_priv);
9315 val |= D_COMP_COMP_DISABLE;
9316 hsw_write_dcomp(dev_priv, val);
9317 ndelay(100);
9318
9319 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
9320 1))
9321 DRM_ERROR("D_COMP RCOMP still in progress\n");
9322
9323 if (allow_power_down) {
9324 val = I915_READ(LCPLL_CTL);
9325 val |= LCPLL_POWER_DOWN_ALLOW;
9326 I915_WRITE(LCPLL_CTL, val);
9327 POSTING_READ(LCPLL_CTL);
9328 }
9329 }
9330
9331 /*
9332 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
9333 * source.
9334 */
9335 static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
9336 {
9337 uint32_t val;
9338
9339 val = I915_READ(LCPLL_CTL);
9340
9341 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
9342 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
9343 return;
9344
9345 /*
9346 * Make sure we're not on PC8 state before disabling PC8, otherwise
9347 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
9348 */
9349 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
9350
9351 if (val & LCPLL_POWER_DOWN_ALLOW) {
9352 val &= ~LCPLL_POWER_DOWN_ALLOW;
9353 I915_WRITE(LCPLL_CTL, val);
9354 POSTING_READ(LCPLL_CTL);
9355 }
9356
9357 val = hsw_read_dcomp(dev_priv);
9358 val |= D_COMP_COMP_FORCE;
9359 val &= ~D_COMP_COMP_DISABLE;
9360 hsw_write_dcomp(dev_priv, val);
9361
9362 val = I915_READ(LCPLL_CTL);
9363 val &= ~LCPLL_PLL_DISABLE;
9364 I915_WRITE(LCPLL_CTL, val);
9365
9366 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
9367 DRM_ERROR("LCPLL not locked yet\n");
9368
9369 if (val & LCPLL_CD_SOURCE_FCLK) {
9370 val = I915_READ(LCPLL_CTL);
9371 val &= ~LCPLL_CD_SOURCE_FCLK;
9372 I915_WRITE(LCPLL_CTL, val);
9373
9374 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9375 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9376 DRM_ERROR("Switching back to LCPLL failed\n");
9377 }
9378
9379 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
9380 intel_update_cdclk(dev_priv->dev);
9381 }
9382
9383 /*
9384 * Package states C8 and deeper are really deep PC states that can only be
9385 * reached when all the devices on the system allow it, so even if the graphics
9386 * device allows PC8+, it doesn't mean the system will actually get to these
9387 * states. Our driver only allows PC8+ when going into runtime PM.
9388 *
9389 * The requirements for PC8+ are that all the outputs are disabled, the power
9390 * well is disabled and most interrupts are disabled, and these are also
9391 * requirements for runtime PM. When these conditions are met, we manually do
9392 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
9393 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
9394 * hang the machine.
9395 *
9396 * When we really reach PC8 or deeper states (not just when we allow it) we lose
9397 * the state of some registers, so when we come back from PC8+ we need to
9398 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
9399 * need to take care of the registers kept by RC6. Notice that this happens even
9400 * if we don't put the device in PCI D3 state (which is what currently happens
9401 * because of the runtime PM support).
9402 *
9403 * For more, read "Display Sequences for Package C8" on the hardware
9404 * documentation.
9405 */
9406 void hsw_enable_pc8(struct drm_i915_private *dev_priv)
9407 {
9408 struct drm_device *dev = dev_priv->dev;
9409 uint32_t val;
9410
9411 DRM_DEBUG_KMS("Enabling package C8+\n");
9412
9413 if (HAS_PCH_LPT_LP(dev)) {
9414 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9415 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
9416 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9417 }
9418
9419 lpt_disable_clkout_dp(dev);
9420 hsw_disable_lcpll(dev_priv, true, true);
9421 }
9422
9423 void hsw_disable_pc8(struct drm_i915_private *dev_priv)
9424 {
9425 struct drm_device *dev = dev_priv->dev;
9426 uint32_t val;
9427
9428 DRM_DEBUG_KMS("Disabling package C8+\n");
9429
9430 hsw_restore_lcpll(dev_priv);
9431 lpt_init_pch_refclk(dev);
9432
9433 if (HAS_PCH_LPT_LP(dev)) {
9434 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9435 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
9436 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9437 }
9438
9439 intel_prepare_ddi(dev);
9440 }
9441
9442 static void broxton_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9443 {
9444 struct drm_device *dev = old_state->dev;
9445 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9446
9447 broxton_set_cdclk(dev, req_cdclk);
9448 }
9449
9450 /* compute the max rate for new configuration */
9451 static int ilk_max_pixel_rate(struct drm_atomic_state *state)
9452 {
9453 struct intel_crtc *intel_crtc;
9454 struct intel_crtc_state *crtc_state;
9455 int max_pixel_rate = 0;
9456
9457 for_each_intel_crtc(state->dev, intel_crtc) {
9458 int pixel_rate;
9459
9460 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
9461 if (IS_ERR(crtc_state))
9462 return PTR_ERR(crtc_state);
9463
9464 if (!crtc_state->base.enable)
9465 continue;
9466
9467 pixel_rate = ilk_pipe_pixel_rate(crtc_state);
9468
9469 /* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
9470 if (IS_BROADWELL(state->dev) && crtc_state->ips_enabled)
9471 pixel_rate = DIV_ROUND_UP(pixel_rate * 100, 95);
9472
9473 max_pixel_rate = max(max_pixel_rate, pixel_rate);
9474 }
9475
9476 return max_pixel_rate;
9477 }
9478
9479 static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
9480 {
9481 struct drm_i915_private *dev_priv = dev->dev_private;
9482 uint32_t val, data;
9483 int ret;
9484
9485 if (WARN((I915_READ(LCPLL_CTL) &
9486 (LCPLL_PLL_DISABLE | LCPLL_PLL_LOCK |
9487 LCPLL_CD_CLOCK_DISABLE | LCPLL_ROOT_CD_CLOCK_DISABLE |
9488 LCPLL_CD2X_CLOCK_DISABLE | LCPLL_POWER_DOWN_ALLOW |
9489 LCPLL_CD_SOURCE_FCLK)) != LCPLL_PLL_LOCK,
9490 "trying to change cdclk frequency with cdclk not enabled\n"))
9491 return;
9492
9493 mutex_lock(&dev_priv->rps.hw_lock);
9494 ret = sandybridge_pcode_write(dev_priv,
9495 BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
9496 mutex_unlock(&dev_priv->rps.hw_lock);
9497 if (ret) {
9498 DRM_ERROR("failed to inform pcode about cdclk change\n");
9499 return;
9500 }
9501
9502 val = I915_READ(LCPLL_CTL);
9503 val |= LCPLL_CD_SOURCE_FCLK;
9504 I915_WRITE(LCPLL_CTL, val);
9505
9506 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9507 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9508 DRM_ERROR("Switching to FCLK failed\n");
9509
9510 val = I915_READ(LCPLL_CTL);
9511 val &= ~LCPLL_CLK_FREQ_MASK;
9512
9513 switch (cdclk) {
9514 case 450000:
9515 val |= LCPLL_CLK_FREQ_450;
9516 data = 0;
9517 break;
9518 case 540000:
9519 val |= LCPLL_CLK_FREQ_54O_BDW;
9520 data = 1;
9521 break;
9522 case 337500:
9523 val |= LCPLL_CLK_FREQ_337_5_BDW;
9524 data = 2;
9525 break;
9526 case 675000:
9527 val |= LCPLL_CLK_FREQ_675_BDW;
9528 data = 3;
9529 break;
9530 default:
9531 WARN(1, "invalid cdclk frequency\n");
9532 return;
9533 }
9534
9535 I915_WRITE(LCPLL_CTL, val);
9536
9537 val = I915_READ(LCPLL_CTL);
9538 val &= ~LCPLL_CD_SOURCE_FCLK;
9539 I915_WRITE(LCPLL_CTL, val);
9540
9541 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9542 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9543 DRM_ERROR("Switching back to LCPLL failed\n");
9544
9545 mutex_lock(&dev_priv->rps.hw_lock);
9546 sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, data);
9547 mutex_unlock(&dev_priv->rps.hw_lock);
9548
9549 intel_update_cdclk(dev);
9550
9551 WARN(cdclk != dev_priv->cdclk_freq,
9552 "cdclk requested %d kHz but got %d kHz\n",
9553 cdclk, dev_priv->cdclk_freq);
9554 }
9555
9556 static int broadwell_modeset_calc_cdclk(struct drm_atomic_state *state)
9557 {
9558 struct drm_i915_private *dev_priv = to_i915(state->dev);
9559 int max_pixclk = ilk_max_pixel_rate(state);
9560 int cdclk;
9561
9562 /*
9563 * FIXME should also account for plane ratio
9564 * once 64bpp pixel formats are supported.
9565 */
9566 if (max_pixclk > 540000)
9567 cdclk = 675000;
9568 else if (max_pixclk > 450000)
9569 cdclk = 540000;
9570 else if (max_pixclk > 337500)
9571 cdclk = 450000;
9572 else
9573 cdclk = 337500;
9574
9575 /*
9576 * FIXME move the cdclk caclulation to
9577 * compute_config() so we can fail gracegully.
9578 */
9579 if (cdclk > dev_priv->max_cdclk_freq) {
9580 DRM_ERROR("requested cdclk (%d kHz) exceeds max (%d kHz)\n",
9581 cdclk, dev_priv->max_cdclk_freq);
9582 cdclk = dev_priv->max_cdclk_freq;
9583 }
9584
9585 to_intel_atomic_state(state)->cdclk = cdclk;
9586
9587 return 0;
9588 }
9589
9590 static void broadwell_modeset_commit_cdclk(struct drm_atomic_state *old_state)
9591 {
9592 struct drm_device *dev = old_state->dev;
9593 unsigned int req_cdclk = to_intel_atomic_state(old_state)->cdclk;
9594
9595 broadwell_set_cdclk(dev, req_cdclk);
9596 }
9597
9598 static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9599 struct intel_crtc_state *crtc_state)
9600 {
9601 if (!intel_ddi_pll_select(crtc, crtc_state))
9602 return -EINVAL;
9603
9604 crtc->lowfreq_avail = false;
9605
9606 return 0;
9607 }
9608
9609 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9610 enum port port,
9611 struct intel_crtc_state *pipe_config)
9612 {
9613 switch (port) {
9614 case PORT_A:
9615 pipe_config->ddi_pll_sel = SKL_DPLL0;
9616 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9617 break;
9618 case PORT_B:
9619 pipe_config->ddi_pll_sel = SKL_DPLL1;
9620 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9621 break;
9622 case PORT_C:
9623 pipe_config->ddi_pll_sel = SKL_DPLL2;
9624 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9625 break;
9626 default:
9627 DRM_ERROR("Incorrect port type\n");
9628 }
9629 }
9630
9631 static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9632 enum port port,
9633 struct intel_crtc_state *pipe_config)
9634 {
9635 u32 temp, dpll_ctl1;
9636
9637 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9638 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
9639
9640 switch (pipe_config->ddi_pll_sel) {
9641 case SKL_DPLL0:
9642 /*
9643 * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
9644 * of the shared DPLL framework and thus needs to be read out
9645 * separately
9646 */
9647 dpll_ctl1 = I915_READ(DPLL_CTRL1);
9648 pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
9649 break;
9650 case SKL_DPLL1:
9651 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9652 break;
9653 case SKL_DPLL2:
9654 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9655 break;
9656 case SKL_DPLL3:
9657 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9658 break;
9659 }
9660 }
9661
9662 static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
9663 enum port port,
9664 struct intel_crtc_state *pipe_config)
9665 {
9666 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
9667
9668 switch (pipe_config->ddi_pll_sel) {
9669 case PORT_CLK_SEL_WRPLL1:
9670 pipe_config->shared_dpll = DPLL_ID_WRPLL1;
9671 break;
9672 case PORT_CLK_SEL_WRPLL2:
9673 pipe_config->shared_dpll = DPLL_ID_WRPLL2;
9674 break;
9675 }
9676 }
9677
9678 static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
9679 struct intel_crtc_state *pipe_config)
9680 {
9681 struct drm_device *dev = crtc->base.dev;
9682 struct drm_i915_private *dev_priv = dev->dev_private;
9683 struct intel_shared_dpll *pll;
9684 enum port port;
9685 uint32_t tmp;
9686
9687 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
9688
9689 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
9690
9691 if (IS_SKYLAKE(dev))
9692 skylake_get_ddi_pll(dev_priv, port, pipe_config);
9693 else if (IS_BROXTON(dev))
9694 bxt_get_ddi_pll(dev_priv, port, pipe_config);
9695 else
9696 haswell_get_ddi_pll(dev_priv, port, pipe_config);
9697
9698 if (pipe_config->shared_dpll >= 0) {
9699 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9700
9701 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9702 &pipe_config->dpll_hw_state));
9703 }
9704
9705 /*
9706 * Haswell has only FDI/PCH transcoder A. It is which is connected to
9707 * DDI E. So just check whether this pipe is wired to DDI E and whether
9708 * the PCH transcoder is on.
9709 */
9710 if (INTEL_INFO(dev)->gen < 9 &&
9711 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
9712 pipe_config->has_pch_encoder = true;
9713
9714 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
9715 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9716 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9717
9718 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9719 }
9720 }
9721
9722 static bool haswell_get_pipe_config(struct intel_crtc *crtc,
9723 struct intel_crtc_state *pipe_config)
9724 {
9725 struct drm_device *dev = crtc->base.dev;
9726 struct drm_i915_private *dev_priv = dev->dev_private;
9727 enum intel_display_power_domain pfit_domain;
9728 uint32_t tmp;
9729
9730 if (!intel_display_power_is_enabled(dev_priv,
9731 POWER_DOMAIN_PIPE(crtc->pipe)))
9732 return false;
9733
9734 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
9735 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9736
9737 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
9738 if (tmp & TRANS_DDI_FUNC_ENABLE) {
9739 enum pipe trans_edp_pipe;
9740 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
9741 default:
9742 WARN(1, "unknown pipe linked to edp transcoder\n");
9743 case TRANS_DDI_EDP_INPUT_A_ONOFF:
9744 case TRANS_DDI_EDP_INPUT_A_ON:
9745 trans_edp_pipe = PIPE_A;
9746 break;
9747 case TRANS_DDI_EDP_INPUT_B_ONOFF:
9748 trans_edp_pipe = PIPE_B;
9749 break;
9750 case TRANS_DDI_EDP_INPUT_C_ONOFF:
9751 trans_edp_pipe = PIPE_C;
9752 break;
9753 }
9754
9755 if (trans_edp_pipe == crtc->pipe)
9756 pipe_config->cpu_transcoder = TRANSCODER_EDP;
9757 }
9758
9759 if (!intel_display_power_is_enabled(dev_priv,
9760 POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
9761 return false;
9762
9763 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
9764 if (!(tmp & PIPECONF_ENABLE))
9765 return false;
9766
9767 haswell_get_ddi_port_state(crtc, pipe_config);
9768
9769 intel_get_pipe_timings(crtc, pipe_config);
9770
9771 if (INTEL_INFO(dev)->gen >= 9) {
9772 skl_init_scalers(dev, crtc, pipe_config);
9773 }
9774
9775 pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
9776
9777 if (INTEL_INFO(dev)->gen >= 9) {
9778 pipe_config->scaler_state.scaler_id = -1;
9779 pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
9780 }
9781
9782 if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
9783 if (INTEL_INFO(dev)->gen >= 9)
9784 skylake_get_pfit_config(crtc, pipe_config);
9785 else
9786 ironlake_get_pfit_config(crtc, pipe_config);
9787 }
9788
9789 if (IS_HASWELL(dev))
9790 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
9791 (I915_READ(IPS_CTL) & IPS_ENABLE);
9792
9793 if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
9794 pipe_config->pixel_multiplier =
9795 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
9796 } else {
9797 pipe_config->pixel_multiplier = 1;
9798 }
9799
9800 return true;
9801 }
9802
9803 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
9804 {
9805 struct drm_device *dev = crtc->dev;
9806 struct drm_i915_private *dev_priv = dev->dev_private;
9807 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9808 uint32_t cntl = 0, size = 0;
9809
9810 if (base) {
9811 unsigned int width = intel_crtc->base.cursor->state->crtc_w;
9812 unsigned int height = intel_crtc->base.cursor->state->crtc_h;
9813 unsigned int stride = roundup_pow_of_two(width) * 4;
9814
9815 switch (stride) {
9816 default:
9817 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
9818 width, stride);
9819 stride = 256;
9820 /* fallthrough */
9821 case 256:
9822 case 512:
9823 case 1024:
9824 case 2048:
9825 break;
9826 }
9827
9828 cntl |= CURSOR_ENABLE |
9829 CURSOR_GAMMA_ENABLE |
9830 CURSOR_FORMAT_ARGB |
9831 CURSOR_STRIDE(stride);
9832
9833 size = (height << 12) | width;
9834 }
9835
9836 if (intel_crtc->cursor_cntl != 0 &&
9837 (intel_crtc->cursor_base != base ||
9838 intel_crtc->cursor_size != size ||
9839 intel_crtc->cursor_cntl != cntl)) {
9840 /* On these chipsets we can only modify the base/size/stride
9841 * whilst the cursor is disabled.
9842 */
9843 I915_WRITE(_CURACNTR, 0);
9844 POSTING_READ(_CURACNTR);
9845 intel_crtc->cursor_cntl = 0;
9846 }
9847
9848 if (intel_crtc->cursor_base != base) {
9849 I915_WRITE(_CURABASE, base);
9850 intel_crtc->cursor_base = base;
9851 }
9852
9853 if (intel_crtc->cursor_size != size) {
9854 I915_WRITE(CURSIZE, size);
9855 intel_crtc->cursor_size = size;
9856 }
9857
9858 if (intel_crtc->cursor_cntl != cntl) {
9859 I915_WRITE(_CURACNTR, cntl);
9860 POSTING_READ(_CURACNTR);
9861 intel_crtc->cursor_cntl = cntl;
9862 }
9863 }
9864
9865 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
9866 {
9867 struct drm_device *dev = crtc->dev;
9868 struct drm_i915_private *dev_priv = dev->dev_private;
9869 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9870 int pipe = intel_crtc->pipe;
9871 uint32_t cntl;
9872
9873 cntl = 0;
9874 if (base) {
9875 cntl = MCURSOR_GAMMA_ENABLE;
9876 switch (intel_crtc->base.cursor->state->crtc_w) {
9877 case 64:
9878 cntl |= CURSOR_MODE_64_ARGB_AX;
9879 break;
9880 case 128:
9881 cntl |= CURSOR_MODE_128_ARGB_AX;
9882 break;
9883 case 256:
9884 cntl |= CURSOR_MODE_256_ARGB_AX;
9885 break;
9886 default:
9887 MISSING_CASE(intel_crtc->base.cursor->state->crtc_w);
9888 return;
9889 }
9890 cntl |= pipe << 28; /* Connect to correct pipe */
9891
9892 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
9893 cntl |= CURSOR_PIPE_CSC_ENABLE;
9894 }
9895
9896 if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
9897 cntl |= CURSOR_ROTATE_180;
9898
9899 if (intel_crtc->cursor_cntl != cntl) {
9900 I915_WRITE(CURCNTR(pipe), cntl);
9901 POSTING_READ(CURCNTR(pipe));
9902 intel_crtc->cursor_cntl = cntl;
9903 }
9904
9905 /* and commit changes on next vblank */
9906 I915_WRITE(CURBASE(pipe), base);
9907 POSTING_READ(CURBASE(pipe));
9908
9909 intel_crtc->cursor_base = base;
9910 }
9911
9912 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
9913 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
9914 bool on)
9915 {
9916 struct drm_device *dev = crtc->dev;
9917 struct drm_i915_private *dev_priv = dev->dev_private;
9918 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9919 int pipe = intel_crtc->pipe;
9920 int x = crtc->cursor_x;
9921 int y = crtc->cursor_y;
9922 u32 base = 0, pos = 0;
9923
9924 if (on)
9925 base = intel_crtc->cursor_addr;
9926
9927 if (x >= intel_crtc->config->pipe_src_w)
9928 base = 0;
9929
9930 if (y >= intel_crtc->config->pipe_src_h)
9931 base = 0;
9932
9933 if (x < 0) {
9934 if (x + intel_crtc->base.cursor->state->crtc_w <= 0)
9935 base = 0;
9936
9937 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
9938 x = -x;
9939 }
9940 pos |= x << CURSOR_X_SHIFT;
9941
9942 if (y < 0) {
9943 if (y + intel_crtc->base.cursor->state->crtc_h <= 0)
9944 base = 0;
9945
9946 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
9947 y = -y;
9948 }
9949 pos |= y << CURSOR_Y_SHIFT;
9950
9951 if (base == 0 && intel_crtc->cursor_base == 0)
9952 return;
9953
9954 I915_WRITE(CURPOS(pipe), pos);
9955
9956 /* ILK+ do this automagically */
9957 if (HAS_GMCH_DISPLAY(dev) &&
9958 crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
9959 base += (intel_crtc->base.cursor->state->crtc_h *
9960 intel_crtc->base.cursor->state->crtc_w - 1) * 4;
9961 }
9962
9963 if (IS_845G(dev) || IS_I865G(dev))
9964 i845_update_cursor(crtc, base);
9965 else
9966 i9xx_update_cursor(crtc, base);
9967 }
9968
9969 static bool cursor_size_ok(struct drm_device *dev,
9970 uint32_t width, uint32_t height)
9971 {
9972 if (width == 0 || height == 0)
9973 return false;
9974
9975 /*
9976 * 845g/865g are special in that they are only limited by
9977 * the width of their cursors, the height is arbitrary up to
9978 * the precision of the register. Everything else requires
9979 * square cursors, limited to a few power-of-two sizes.
9980 */
9981 if (IS_845G(dev) || IS_I865G(dev)) {
9982 if ((width & 63) != 0)
9983 return false;
9984
9985 if (width > (IS_845G(dev) ? 64 : 512))
9986 return false;
9987
9988 if (height > 1023)
9989 return false;
9990 } else {
9991 switch (width | height) {
9992 case 256:
9993 case 128:
9994 if (IS_GEN2(dev))
9995 return false;
9996 case 64:
9997 break;
9998 default:
9999 return false;
10000 }
10001 }
10002
10003 return true;
10004 }
10005
10006 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
10007 u16 *blue, uint32_t start, uint32_t size)
10008 {
10009 int end = (start + size > 256) ? 256 : start + size, i;
10010 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10011
10012 for (i = start; i < end; i++) {
10013 intel_crtc->lut_r[i] = red[i] >> 8;
10014 intel_crtc->lut_g[i] = green[i] >> 8;
10015 intel_crtc->lut_b[i] = blue[i] >> 8;
10016 }
10017
10018 intel_crtc_load_lut(crtc);
10019 }
10020
10021 /* VESA 640x480x72Hz mode to set on the pipe */
10022 static struct drm_display_mode load_detect_mode = {
10023 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
10024 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
10025 };
10026
10027 struct drm_framebuffer *
10028 __intel_framebuffer_create(struct drm_device *dev,
10029 struct drm_mode_fb_cmd2 *mode_cmd,
10030 struct drm_i915_gem_object *obj)
10031 {
10032 struct intel_framebuffer *intel_fb;
10033 int ret;
10034
10035 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
10036 if (!intel_fb) {
10037 drm_gem_object_unreference(&obj->base);
10038 return ERR_PTR(-ENOMEM);
10039 }
10040
10041 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
10042 if (ret)
10043 goto err;
10044
10045 return &intel_fb->base;
10046 err:
10047 drm_gem_object_unreference(&obj->base);
10048 kfree(intel_fb);
10049
10050 return ERR_PTR(ret);
10051 }
10052
10053 static struct drm_framebuffer *
10054 intel_framebuffer_create(struct drm_device *dev,
10055 struct drm_mode_fb_cmd2 *mode_cmd,
10056 struct drm_i915_gem_object *obj)
10057 {
10058 struct drm_framebuffer *fb;
10059 int ret;
10060
10061 ret = i915_mutex_lock_interruptible(dev);
10062 if (ret)
10063 return ERR_PTR(ret);
10064 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
10065 mutex_unlock(&dev->struct_mutex);
10066
10067 return fb;
10068 }
10069
10070 static u32
10071 intel_framebuffer_pitch_for_width(int width, int bpp)
10072 {
10073 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
10074 return ALIGN(pitch, 64);
10075 }
10076
10077 static u32
10078 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
10079 {
10080 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
10081 return PAGE_ALIGN(pitch * mode->vdisplay);
10082 }
10083
10084 static struct drm_framebuffer *
10085 intel_framebuffer_create_for_mode(struct drm_device *dev,
10086 struct drm_display_mode *mode,
10087 int depth, int bpp)
10088 {
10089 struct drm_i915_gem_object *obj;
10090 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
10091
10092 obj = i915_gem_alloc_object(dev,
10093 intel_framebuffer_size_for_mode(mode, bpp));
10094 if (obj == NULL)
10095 return ERR_PTR(-ENOMEM);
10096
10097 mode_cmd.width = mode->hdisplay;
10098 mode_cmd.height = mode->vdisplay;
10099 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
10100 bpp);
10101 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
10102
10103 return intel_framebuffer_create(dev, &mode_cmd, obj);
10104 }
10105
10106 static struct drm_framebuffer *
10107 mode_fits_in_fbdev(struct drm_device *dev,
10108 struct drm_display_mode *mode)
10109 {
10110 #ifdef CONFIG_DRM_FBDEV_EMULATION
10111 struct drm_i915_private *dev_priv = dev->dev_private;
10112 struct drm_i915_gem_object *obj;
10113 struct drm_framebuffer *fb;
10114
10115 if (!dev_priv->fbdev)
10116 return NULL;
10117
10118 if (!dev_priv->fbdev->fb)
10119 return NULL;
10120
10121 obj = dev_priv->fbdev->fb->obj;
10122 BUG_ON(!obj);
10123
10124 fb = &dev_priv->fbdev->fb->base;
10125 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
10126 fb->bits_per_pixel))
10127 return NULL;
10128
10129 if (obj->base.size < mode->vdisplay * fb->pitches[0])
10130 return NULL;
10131
10132 return fb;
10133 #else
10134 return NULL;
10135 #endif
10136 }
10137
10138 static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
10139 struct drm_crtc *crtc,
10140 struct drm_display_mode *mode,
10141 struct drm_framebuffer *fb,
10142 int x, int y)
10143 {
10144 struct drm_plane_state *plane_state;
10145 int hdisplay, vdisplay;
10146 int ret;
10147
10148 plane_state = drm_atomic_get_plane_state(state, crtc->primary);
10149 if (IS_ERR(plane_state))
10150 return PTR_ERR(plane_state);
10151
10152 if (mode)
10153 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
10154 else
10155 hdisplay = vdisplay = 0;
10156
10157 ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
10158 if (ret)
10159 return ret;
10160 drm_atomic_set_fb_for_plane(plane_state, fb);
10161 plane_state->crtc_x = 0;
10162 plane_state->crtc_y = 0;
10163 plane_state->crtc_w = hdisplay;
10164 plane_state->crtc_h = vdisplay;
10165 plane_state->src_x = x << 16;
10166 plane_state->src_y = y << 16;
10167 plane_state->src_w = hdisplay << 16;
10168 plane_state->src_h = vdisplay << 16;
10169
10170 return 0;
10171 }
10172
10173 bool intel_get_load_detect_pipe(struct drm_connector *connector,
10174 struct drm_display_mode *mode,
10175 struct intel_load_detect_pipe *old,
10176 struct drm_modeset_acquire_ctx *ctx)
10177 {
10178 struct intel_crtc *intel_crtc;
10179 struct intel_encoder *intel_encoder =
10180 intel_attached_encoder(connector);
10181 struct drm_crtc *possible_crtc;
10182 struct drm_encoder *encoder = &intel_encoder->base;
10183 struct drm_crtc *crtc = NULL;
10184 struct drm_device *dev = encoder->dev;
10185 struct drm_framebuffer *fb;
10186 struct drm_mode_config *config = &dev->mode_config;
10187 struct drm_atomic_state *state = NULL;
10188 struct drm_connector_state *connector_state;
10189 struct intel_crtc_state *crtc_state;
10190 int ret, i = -1;
10191
10192 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10193 connector->base.id, connector->name,
10194 encoder->base.id, encoder->name);
10195
10196 retry:
10197 ret = drm_modeset_lock(&config->connection_mutex, ctx);
10198 if (ret)
10199 goto fail;
10200
10201 /*
10202 * Algorithm gets a little messy:
10203 *
10204 * - if the connector already has an assigned crtc, use it (but make
10205 * sure it's on first)
10206 *
10207 * - try to find the first unused crtc that can drive this connector,
10208 * and use that if we find one
10209 */
10210
10211 /* See if we already have a CRTC for this connector */
10212 if (encoder->crtc) {
10213 crtc = encoder->crtc;
10214
10215 ret = drm_modeset_lock(&crtc->mutex, ctx);
10216 if (ret)
10217 goto fail;
10218 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10219 if (ret)
10220 goto fail;
10221
10222 old->dpms_mode = connector->dpms;
10223 old->load_detect_temp = false;
10224
10225 /* Make sure the crtc and connector are running */
10226 if (connector->dpms != DRM_MODE_DPMS_ON)
10227 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
10228
10229 return true;
10230 }
10231
10232 /* Find an unused one (if possible) */
10233 for_each_crtc(dev, possible_crtc) {
10234 i++;
10235 if (!(encoder->possible_crtcs & (1 << i)))
10236 continue;
10237 if (possible_crtc->state->enable)
10238 continue;
10239
10240 crtc = possible_crtc;
10241 break;
10242 }
10243
10244 /*
10245 * If we didn't find an unused CRTC, don't use any.
10246 */
10247 if (!crtc) {
10248 DRM_DEBUG_KMS("no pipe available for load-detect\n");
10249 goto fail;
10250 }
10251
10252 ret = drm_modeset_lock(&crtc->mutex, ctx);
10253 if (ret)
10254 goto fail;
10255 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
10256 if (ret)
10257 goto fail;
10258
10259 intel_crtc = to_intel_crtc(crtc);
10260 old->dpms_mode = connector->dpms;
10261 old->load_detect_temp = true;
10262 old->release_fb = NULL;
10263
10264 state = drm_atomic_state_alloc(dev);
10265 if (!state)
10266 return false;
10267
10268 state->acquire_ctx = ctx;
10269
10270 connector_state = drm_atomic_get_connector_state(state, connector);
10271 if (IS_ERR(connector_state)) {
10272 ret = PTR_ERR(connector_state);
10273 goto fail;
10274 }
10275
10276 connector_state->crtc = crtc;
10277 connector_state->best_encoder = &intel_encoder->base;
10278
10279 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10280 if (IS_ERR(crtc_state)) {
10281 ret = PTR_ERR(crtc_state);
10282 goto fail;
10283 }
10284
10285 crtc_state->base.active = crtc_state->base.enable = true;
10286
10287 if (!mode)
10288 mode = &load_detect_mode;
10289
10290 /* We need a framebuffer large enough to accommodate all accesses
10291 * that the plane may generate whilst we perform load detection.
10292 * We can not rely on the fbcon either being present (we get called
10293 * during its initialisation to detect all boot displays, or it may
10294 * not even exist) or that it is large enough to satisfy the
10295 * requested mode.
10296 */
10297 fb = mode_fits_in_fbdev(dev, mode);
10298 if (fb == NULL) {
10299 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
10300 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
10301 old->release_fb = fb;
10302 } else
10303 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
10304 if (IS_ERR(fb)) {
10305 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
10306 goto fail;
10307 }
10308
10309 ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
10310 if (ret)
10311 goto fail;
10312
10313 drm_mode_copy(&crtc_state->base.mode, mode);
10314
10315 if (drm_atomic_commit(state)) {
10316 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
10317 if (old->release_fb)
10318 old->release_fb->funcs->destroy(old->release_fb);
10319 goto fail;
10320 }
10321 crtc->primary->crtc = crtc;
10322
10323 /* let the connector get through one full cycle before testing */
10324 intel_wait_for_vblank(dev, intel_crtc->pipe);
10325 return true;
10326
10327 fail:
10328 drm_atomic_state_free(state);
10329 state = NULL;
10330
10331 if (ret == -EDEADLK) {
10332 drm_modeset_backoff(ctx);
10333 goto retry;
10334 }
10335
10336 return false;
10337 }
10338
10339 void intel_release_load_detect_pipe(struct drm_connector *connector,
10340 struct intel_load_detect_pipe *old,
10341 struct drm_modeset_acquire_ctx *ctx)
10342 {
10343 struct drm_device *dev = connector->dev;
10344 struct intel_encoder *intel_encoder =
10345 intel_attached_encoder(connector);
10346 struct drm_encoder *encoder = &intel_encoder->base;
10347 struct drm_crtc *crtc = encoder->crtc;
10348 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10349 struct drm_atomic_state *state;
10350 struct drm_connector_state *connector_state;
10351 struct intel_crtc_state *crtc_state;
10352 int ret;
10353
10354 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
10355 connector->base.id, connector->name,
10356 encoder->base.id, encoder->name);
10357
10358 if (old->load_detect_temp) {
10359 state = drm_atomic_state_alloc(dev);
10360 if (!state)
10361 goto fail;
10362
10363 state->acquire_ctx = ctx;
10364
10365 connector_state = drm_atomic_get_connector_state(state, connector);
10366 if (IS_ERR(connector_state))
10367 goto fail;
10368
10369 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
10370 if (IS_ERR(crtc_state))
10371 goto fail;
10372
10373 connector_state->best_encoder = NULL;
10374 connector_state->crtc = NULL;
10375
10376 crtc_state->base.enable = crtc_state->base.active = false;
10377
10378 ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL,
10379 0, 0);
10380 if (ret)
10381 goto fail;
10382
10383 ret = drm_atomic_commit(state);
10384 if (ret)
10385 goto fail;
10386
10387 if (old->release_fb) {
10388 drm_framebuffer_unregister_private(old->release_fb);
10389 drm_framebuffer_unreference(old->release_fb);
10390 }
10391
10392 return;
10393 }
10394
10395 /* Switch crtc and encoder back off if necessary */
10396 if (old->dpms_mode != DRM_MODE_DPMS_ON)
10397 connector->funcs->dpms(connector, old->dpms_mode);
10398
10399 return;
10400 fail:
10401 DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
10402 drm_atomic_state_free(state);
10403 }
10404
10405 static int i9xx_pll_refclk(struct drm_device *dev,
10406 const struct intel_crtc_state *pipe_config)
10407 {
10408 struct drm_i915_private *dev_priv = dev->dev_private;
10409 u32 dpll = pipe_config->dpll_hw_state.dpll;
10410
10411 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
10412 return dev_priv->vbt.lvds_ssc_freq;
10413 else if (HAS_PCH_SPLIT(dev))
10414 return 120000;
10415 else if (!IS_GEN2(dev))
10416 return 96000;
10417 else
10418 return 48000;
10419 }
10420
10421 /* Returns the clock of the currently programmed mode of the given pipe. */
10422 static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
10423 struct intel_crtc_state *pipe_config)
10424 {
10425 struct drm_device *dev = crtc->base.dev;
10426 struct drm_i915_private *dev_priv = dev->dev_private;
10427 int pipe = pipe_config->cpu_transcoder;
10428 u32 dpll = pipe_config->dpll_hw_state.dpll;
10429 u32 fp;
10430 intel_clock_t clock;
10431 int port_clock;
10432 int refclk = i9xx_pll_refclk(dev, pipe_config);
10433
10434 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
10435 fp = pipe_config->dpll_hw_state.fp0;
10436 else
10437 fp = pipe_config->dpll_hw_state.fp1;
10438
10439 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
10440 if (IS_PINEVIEW(dev)) {
10441 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10442 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
10443 } else {
10444 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10445 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10446 }
10447
10448 if (!IS_GEN2(dev)) {
10449 if (IS_PINEVIEW(dev))
10450 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10451 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
10452 else
10453 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
10454 DPLL_FPA01_P1_POST_DIV_SHIFT);
10455
10456 switch (dpll & DPLL_MODE_MASK) {
10457 case DPLLB_MODE_DAC_SERIAL:
10458 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10459 5 : 10;
10460 break;
10461 case DPLLB_MODE_LVDS:
10462 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10463 7 : 14;
10464 break;
10465 default:
10466 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
10467 "mode\n", (int)(dpll & DPLL_MODE_MASK));
10468 return;
10469 }
10470
10471 if (IS_PINEVIEW(dev))
10472 port_clock = pnv_calc_dpll_params(refclk, &clock);
10473 else
10474 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10475 } else {
10476 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
10477 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
10478
10479 if (is_lvds) {
10480 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10481 DPLL_FPA01_P1_POST_DIV_SHIFT);
10482
10483 if (lvds & LVDS_CLKB_POWER_UP)
10484 clock.p2 = 7;
10485 else
10486 clock.p2 = 14;
10487 } else {
10488 if (dpll & PLL_P1_DIVIDE_BY_TWO)
10489 clock.p1 = 2;
10490 else {
10491 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10492 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10493 }
10494 if (dpll & PLL_P2_DIVIDE_BY_4)
10495 clock.p2 = 4;
10496 else
10497 clock.p2 = 2;
10498 }
10499
10500 port_clock = i9xx_calc_dpll_params(refclk, &clock);
10501 }
10502
10503 /*
10504 * This value includes pixel_multiplier. We will use
10505 * port_clock to compute adjusted_mode.crtc_clock in the
10506 * encoder's get_config() function.
10507 */
10508 pipe_config->port_clock = port_clock;
10509 }
10510
10511 int intel_dotclock_calculate(int link_freq,
10512 const struct intel_link_m_n *m_n)
10513 {
10514 /*
10515 * The calculation for the data clock is:
10516 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
10517 * But we want to avoid losing precison if possible, so:
10518 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
10519 *
10520 * and the link clock is simpler:
10521 * link_clock = (m * link_clock) / n
10522 */
10523
10524 if (!m_n->link_n)
10525 return 0;
10526
10527 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
10528 }
10529
10530 static void ironlake_pch_clock_get(struct intel_crtc *crtc,
10531 struct intel_crtc_state *pipe_config)
10532 {
10533 struct drm_device *dev = crtc->base.dev;
10534
10535 /* read out port_clock from the DPLL */
10536 i9xx_crtc_clock_get(crtc, pipe_config);
10537
10538 /*
10539 * This value does not include pixel_multiplier.
10540 * We will check that port_clock and adjusted_mode.crtc_clock
10541 * agree once we know their relationship in the encoder's
10542 * get_config() function.
10543 */
10544 pipe_config->base.adjusted_mode.crtc_clock =
10545 intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
10546 &pipe_config->fdi_m_n);
10547 }
10548
10549 /** Returns the currently programmed mode of the given pipe. */
10550 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
10551 struct drm_crtc *crtc)
10552 {
10553 struct drm_i915_private *dev_priv = dev->dev_private;
10554 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10555 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
10556 struct drm_display_mode *mode;
10557 struct intel_crtc_state pipe_config;
10558 int htot = I915_READ(HTOTAL(cpu_transcoder));
10559 int hsync = I915_READ(HSYNC(cpu_transcoder));
10560 int vtot = I915_READ(VTOTAL(cpu_transcoder));
10561 int vsync = I915_READ(VSYNC(cpu_transcoder));
10562 enum pipe pipe = intel_crtc->pipe;
10563
10564 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10565 if (!mode)
10566 return NULL;
10567
10568 /*
10569 * Construct a pipe_config sufficient for getting the clock info
10570 * back out of crtc_clock_get.
10571 *
10572 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
10573 * to use a real value here instead.
10574 */
10575 pipe_config.cpu_transcoder = (enum transcoder) pipe;
10576 pipe_config.pixel_multiplier = 1;
10577 pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
10578 pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
10579 pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
10580 i9xx_crtc_clock_get(intel_crtc, &pipe_config);
10581
10582 mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
10583 mode->hdisplay = (htot & 0xffff) + 1;
10584 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
10585 mode->hsync_start = (hsync & 0xffff) + 1;
10586 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
10587 mode->vdisplay = (vtot & 0xffff) + 1;
10588 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
10589 mode->vsync_start = (vsync & 0xffff) + 1;
10590 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
10591
10592 drm_mode_set_name(mode);
10593
10594 return mode;
10595 }
10596
10597 void intel_mark_busy(struct drm_device *dev)
10598 {
10599 struct drm_i915_private *dev_priv = dev->dev_private;
10600
10601 if (dev_priv->mm.busy)
10602 return;
10603
10604 intel_runtime_pm_get(dev_priv);
10605 i915_update_gfx_val(dev_priv);
10606 if (INTEL_INFO(dev)->gen >= 6)
10607 gen6_rps_busy(dev_priv);
10608 dev_priv->mm.busy = true;
10609 }
10610
10611 void intel_mark_idle(struct drm_device *dev)
10612 {
10613 struct drm_i915_private *dev_priv = dev->dev_private;
10614
10615 if (!dev_priv->mm.busy)
10616 return;
10617
10618 dev_priv->mm.busy = false;
10619
10620 if (INTEL_INFO(dev)->gen >= 6)
10621 gen6_rps_idle(dev->dev_private);
10622
10623 intel_runtime_pm_put(dev_priv);
10624 }
10625
10626 static void intel_crtc_destroy(struct drm_crtc *crtc)
10627 {
10628 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10629 struct drm_device *dev = crtc->dev;
10630 struct intel_unpin_work *work;
10631
10632 spin_lock_irq(&dev->event_lock);
10633 work = intel_crtc->unpin_work;
10634 intel_crtc->unpin_work = NULL;
10635 spin_unlock_irq(&dev->event_lock);
10636
10637 if (work) {
10638 cancel_work_sync(&work->work);
10639 kfree(work);
10640 }
10641
10642 drm_crtc_cleanup(crtc);
10643
10644 kfree(intel_crtc);
10645 }
10646
10647 static void intel_unpin_work_fn(struct work_struct *__work)
10648 {
10649 struct intel_unpin_work *work =
10650 container_of(__work, struct intel_unpin_work, work);
10651 struct intel_crtc *crtc = to_intel_crtc(work->crtc);
10652 struct drm_device *dev = crtc->base.dev;
10653 struct drm_plane *primary = crtc->base.primary;
10654
10655 mutex_lock(&dev->struct_mutex);
10656 intel_unpin_fb_obj(work->old_fb, primary->state);
10657 drm_gem_object_unreference(&work->pending_flip_obj->base);
10658
10659 if (work->flip_queued_req)
10660 i915_gem_request_assign(&work->flip_queued_req, NULL);
10661 mutex_unlock(&dev->struct_mutex);
10662
10663 intel_frontbuffer_flip_complete(dev, to_intel_plane(primary)->frontbuffer_bit);
10664 drm_framebuffer_unreference(work->old_fb);
10665
10666 BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
10667 atomic_dec(&crtc->unpin_work_count);
10668
10669 kfree(work);
10670 }
10671
10672 static void do_intel_finish_page_flip(struct drm_device *dev,
10673 struct drm_crtc *crtc)
10674 {
10675 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10676 struct intel_unpin_work *work;
10677 unsigned long flags;
10678
10679 /* Ignore early vblank irqs */
10680 if (intel_crtc == NULL)
10681 return;
10682
10683 /*
10684 * This is called both by irq handlers and the reset code (to complete
10685 * lost pageflips) so needs the full irqsave spinlocks.
10686 */
10687 spin_lock_irqsave(&dev->event_lock, flags);
10688 work = intel_crtc->unpin_work;
10689
10690 /* Ensure we don't miss a work->pending update ... */
10691 smp_rmb();
10692
10693 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
10694 spin_unlock_irqrestore(&dev->event_lock, flags);
10695 return;
10696 }
10697
10698 page_flip_completed(intel_crtc);
10699
10700 spin_unlock_irqrestore(&dev->event_lock, flags);
10701 }
10702
10703 void intel_finish_page_flip(struct drm_device *dev, int pipe)
10704 {
10705 struct drm_i915_private *dev_priv = dev->dev_private;
10706 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
10707
10708 do_intel_finish_page_flip(dev, crtc);
10709 }
10710
10711 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
10712 {
10713 struct drm_i915_private *dev_priv = dev->dev_private;
10714 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
10715
10716 do_intel_finish_page_flip(dev, crtc);
10717 }
10718
10719 /* Is 'a' after or equal to 'b'? */
10720 static bool g4x_flip_count_after_eq(u32 a, u32 b)
10721 {
10722 return !((a - b) & 0x80000000);
10723 }
10724
10725 static bool page_flip_finished(struct intel_crtc *crtc)
10726 {
10727 struct drm_device *dev = crtc->base.dev;
10728 struct drm_i915_private *dev_priv = dev->dev_private;
10729
10730 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
10731 crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
10732 return true;
10733
10734 /*
10735 * The relevant registers doen't exist on pre-ctg.
10736 * As the flip done interrupt doesn't trigger for mmio
10737 * flips on gmch platforms, a flip count check isn't
10738 * really needed there. But since ctg has the registers,
10739 * include it in the check anyway.
10740 */
10741 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
10742 return true;
10743
10744 /*
10745 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
10746 * used the same base address. In that case the mmio flip might
10747 * have completed, but the CS hasn't even executed the flip yet.
10748 *
10749 * A flip count check isn't enough as the CS might have updated
10750 * the base address just after start of vblank, but before we
10751 * managed to process the interrupt. This means we'd complete the
10752 * CS flip too soon.
10753 *
10754 * Combining both checks should get us a good enough result. It may
10755 * still happen that the CS flip has been executed, but has not
10756 * yet actually completed. But in case the base address is the same
10757 * anyway, we don't really care.
10758 */
10759 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
10760 crtc->unpin_work->gtt_offset &&
10761 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_GM45(crtc->pipe)),
10762 crtc->unpin_work->flip_count);
10763 }
10764
10765 void intel_prepare_page_flip(struct drm_device *dev, int plane)
10766 {
10767 struct drm_i915_private *dev_priv = dev->dev_private;
10768 struct intel_crtc *intel_crtc =
10769 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
10770 unsigned long flags;
10771
10772
10773 /*
10774 * This is called both by irq handlers and the reset code (to complete
10775 * lost pageflips) so needs the full irqsave spinlocks.
10776 *
10777 * NB: An MMIO update of the plane base pointer will also
10778 * generate a page-flip completion irq, i.e. every modeset
10779 * is also accompanied by a spurious intel_prepare_page_flip().
10780 */
10781 spin_lock_irqsave(&dev->event_lock, flags);
10782 if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
10783 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
10784 spin_unlock_irqrestore(&dev->event_lock, flags);
10785 }
10786
10787 static inline void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
10788 {
10789 /* Ensure that the work item is consistent when activating it ... */
10790 smp_wmb();
10791 atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
10792 /* and that it is marked active as soon as the irq could fire. */
10793 smp_wmb();
10794 }
10795
10796 static int intel_gen2_queue_flip(struct drm_device *dev,
10797 struct drm_crtc *crtc,
10798 struct drm_framebuffer *fb,
10799 struct drm_i915_gem_object *obj,
10800 struct drm_i915_gem_request *req,
10801 uint32_t flags)
10802 {
10803 struct intel_engine_cs *ring = req->ring;
10804 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10805 u32 flip_mask;
10806 int ret;
10807
10808 ret = intel_ring_begin(req, 6);
10809 if (ret)
10810 return ret;
10811
10812 /* Can't queue multiple flips, so wait for the previous
10813 * one to finish before executing the next.
10814 */
10815 if (intel_crtc->plane)
10816 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10817 else
10818 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10819 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10820 intel_ring_emit(ring, MI_NOOP);
10821 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10822 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10823 intel_ring_emit(ring, fb->pitches[0]);
10824 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10825 intel_ring_emit(ring, 0); /* aux display base address, unused */
10826
10827 intel_mark_page_flip_active(intel_crtc);
10828 return 0;
10829 }
10830
10831 static int intel_gen3_queue_flip(struct drm_device *dev,
10832 struct drm_crtc *crtc,
10833 struct drm_framebuffer *fb,
10834 struct drm_i915_gem_object *obj,
10835 struct drm_i915_gem_request *req,
10836 uint32_t flags)
10837 {
10838 struct intel_engine_cs *ring = req->ring;
10839 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10840 u32 flip_mask;
10841 int ret;
10842
10843 ret = intel_ring_begin(req, 6);
10844 if (ret)
10845 return ret;
10846
10847 if (intel_crtc->plane)
10848 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10849 else
10850 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
10851 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10852 intel_ring_emit(ring, MI_NOOP);
10853 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
10854 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10855 intel_ring_emit(ring, fb->pitches[0]);
10856 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10857 intel_ring_emit(ring, MI_NOOP);
10858
10859 intel_mark_page_flip_active(intel_crtc);
10860 return 0;
10861 }
10862
10863 static int intel_gen4_queue_flip(struct drm_device *dev,
10864 struct drm_crtc *crtc,
10865 struct drm_framebuffer *fb,
10866 struct drm_i915_gem_object *obj,
10867 struct drm_i915_gem_request *req,
10868 uint32_t flags)
10869 {
10870 struct intel_engine_cs *ring = req->ring;
10871 struct drm_i915_private *dev_priv = dev->dev_private;
10872 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10873 uint32_t pf, pipesrc;
10874 int ret;
10875
10876 ret = intel_ring_begin(req, 4);
10877 if (ret)
10878 return ret;
10879
10880 /* i965+ uses the linear or tiled offsets from the
10881 * Display Registers (which do not change across a page-flip)
10882 * so we need only reprogram the base address.
10883 */
10884 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10885 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10886 intel_ring_emit(ring, fb->pitches[0]);
10887 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
10888 obj->tiling_mode);
10889
10890 /* XXX Enabling the panel-fitter across page-flip is so far
10891 * untested on non-native modes, so ignore it for now.
10892 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
10893 */
10894 pf = 0;
10895 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10896 intel_ring_emit(ring, pf | pipesrc);
10897
10898 intel_mark_page_flip_active(intel_crtc);
10899 return 0;
10900 }
10901
10902 static int intel_gen6_queue_flip(struct drm_device *dev,
10903 struct drm_crtc *crtc,
10904 struct drm_framebuffer *fb,
10905 struct drm_i915_gem_object *obj,
10906 struct drm_i915_gem_request *req,
10907 uint32_t flags)
10908 {
10909 struct intel_engine_cs *ring = req->ring;
10910 struct drm_i915_private *dev_priv = dev->dev_private;
10911 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10912 uint32_t pf, pipesrc;
10913 int ret;
10914
10915 ret = intel_ring_begin(req, 4);
10916 if (ret)
10917 return ret;
10918
10919 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10920 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10921 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
10922 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
10923
10924 /* Contrary to the suggestions in the documentation,
10925 * "Enable Panel Fitter" does not seem to be required when page
10926 * flipping with a non-native mode, and worse causes a normal
10927 * modeset to fail.
10928 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
10929 */
10930 pf = 0;
10931 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
10932 intel_ring_emit(ring, pf | pipesrc);
10933
10934 intel_mark_page_flip_active(intel_crtc);
10935 return 0;
10936 }
10937
10938 static int intel_gen7_queue_flip(struct drm_device *dev,
10939 struct drm_crtc *crtc,
10940 struct drm_framebuffer *fb,
10941 struct drm_i915_gem_object *obj,
10942 struct drm_i915_gem_request *req,
10943 uint32_t flags)
10944 {
10945 struct intel_engine_cs *ring = req->ring;
10946 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10947 uint32_t plane_bit = 0;
10948 int len, ret;
10949
10950 switch (intel_crtc->plane) {
10951 case PLANE_A:
10952 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
10953 break;
10954 case PLANE_B:
10955 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
10956 break;
10957 case PLANE_C:
10958 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
10959 break;
10960 default:
10961 WARN_ONCE(1, "unknown plane in flip command\n");
10962 return -ENODEV;
10963 }
10964
10965 len = 4;
10966 if (ring->id == RCS) {
10967 len += 6;
10968 /*
10969 * On Gen 8, SRM is now taking an extra dword to accommodate
10970 * 48bits addresses, and we need a NOOP for the batch size to
10971 * stay even.
10972 */
10973 if (IS_GEN8(dev))
10974 len += 2;
10975 }
10976
10977 /*
10978 * BSpec MI_DISPLAY_FLIP for IVB:
10979 * "The full packet must be contained within the same cache line."
10980 *
10981 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
10982 * cacheline, if we ever start emitting more commands before
10983 * the MI_DISPLAY_FLIP we may need to first emit everything else,
10984 * then do the cacheline alignment, and finally emit the
10985 * MI_DISPLAY_FLIP.
10986 */
10987 ret = intel_ring_cacheline_align(req);
10988 if (ret)
10989 return ret;
10990
10991 ret = intel_ring_begin(req, len);
10992 if (ret)
10993 return ret;
10994
10995 /* Unmask the flip-done completion message. Note that the bspec says that
10996 * we should do this for both the BCS and RCS, and that we must not unmask
10997 * more than one flip event at any time (or ensure that one flip message
10998 * can be sent by waiting for flip-done prior to queueing new flips).
10999 * Experimentation says that BCS works despite DERRMR masking all
11000 * flip-done completion events and that unmasking all planes at once
11001 * for the RCS also doesn't appear to drop events. Setting the DERRMR
11002 * to zero does lead to lockups within MI_DISPLAY_FLIP.
11003 */
11004 if (ring->id == RCS) {
11005 intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
11006 intel_ring_emit(ring, DERRMR);
11007 intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
11008 DERRMR_PIPEB_PRI_FLIP_DONE |
11009 DERRMR_PIPEC_PRI_FLIP_DONE));
11010 if (IS_GEN8(dev))
11011 intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8 |
11012 MI_SRM_LRM_GLOBAL_GTT);
11013 else
11014 intel_ring_emit(ring, MI_STORE_REGISTER_MEM |
11015 MI_SRM_LRM_GLOBAL_GTT);
11016 intel_ring_emit(ring, DERRMR);
11017 intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
11018 if (IS_GEN8(dev)) {
11019 intel_ring_emit(ring, 0);
11020 intel_ring_emit(ring, MI_NOOP);
11021 }
11022 }
11023
11024 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
11025 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
11026 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
11027 intel_ring_emit(ring, (MI_NOOP));
11028
11029 intel_mark_page_flip_active(intel_crtc);
11030 return 0;
11031 }
11032
11033 static bool use_mmio_flip(struct intel_engine_cs *ring,
11034 struct drm_i915_gem_object *obj)
11035 {
11036 /*
11037 * This is not being used for older platforms, because
11038 * non-availability of flip done interrupt forces us to use
11039 * CS flips. Older platforms derive flip done using some clever
11040 * tricks involving the flip_pending status bits and vblank irqs.
11041 * So using MMIO flips there would disrupt this mechanism.
11042 */
11043
11044 if (ring == NULL)
11045 return true;
11046
11047 if (INTEL_INFO(ring->dev)->gen < 5)
11048 return false;
11049
11050 if (i915.use_mmio_flip < 0)
11051 return false;
11052 else if (i915.use_mmio_flip > 0)
11053 return true;
11054 else if (i915.enable_execlists)
11055 return true;
11056 else
11057 return ring != i915_gem_request_get_ring(obj->last_write_req);
11058 }
11059
11060 static void skl_do_mmio_flip(struct intel_crtc *intel_crtc)
11061 {
11062 struct drm_device *dev = intel_crtc->base.dev;
11063 struct drm_i915_private *dev_priv = dev->dev_private;
11064 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
11065 const enum pipe pipe = intel_crtc->pipe;
11066 u32 ctl, stride;
11067
11068 ctl = I915_READ(PLANE_CTL(pipe, 0));
11069 ctl &= ~PLANE_CTL_TILED_MASK;
11070 switch (fb->modifier[0]) {
11071 case DRM_FORMAT_MOD_NONE:
11072 break;
11073 case I915_FORMAT_MOD_X_TILED:
11074 ctl |= PLANE_CTL_TILED_X;
11075 break;
11076 case I915_FORMAT_MOD_Y_TILED:
11077 ctl |= PLANE_CTL_TILED_Y;
11078 break;
11079 case I915_FORMAT_MOD_Yf_TILED:
11080 ctl |= PLANE_CTL_TILED_YF;
11081 break;
11082 default:
11083 MISSING_CASE(fb->modifier[0]);
11084 }
11085
11086 /*
11087 * The stride is either expressed as a multiple of 64 bytes chunks for
11088 * linear buffers or in number of tiles for tiled buffers.
11089 */
11090 stride = fb->pitches[0] /
11091 intel_fb_stride_alignment(dev, fb->modifier[0],
11092 fb->pixel_format);
11093
11094 /*
11095 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
11096 * PLANE_SURF updates, the update is then guaranteed to be atomic.
11097 */
11098 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
11099 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
11100
11101 I915_WRITE(PLANE_SURF(pipe, 0), intel_crtc->unpin_work->gtt_offset);
11102 POSTING_READ(PLANE_SURF(pipe, 0));
11103 }
11104
11105 static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
11106 {
11107 struct drm_device *dev = intel_crtc->base.dev;
11108 struct drm_i915_private *dev_priv = dev->dev_private;
11109 struct intel_framebuffer *intel_fb =
11110 to_intel_framebuffer(intel_crtc->base.primary->fb);
11111 struct drm_i915_gem_object *obj = intel_fb->obj;
11112 u32 dspcntr;
11113 u32 reg;
11114
11115 reg = DSPCNTR(intel_crtc->plane);
11116 dspcntr = I915_READ(reg);
11117
11118 if (obj->tiling_mode != I915_TILING_NONE)
11119 dspcntr |= DISPPLANE_TILED;
11120 else
11121 dspcntr &= ~DISPPLANE_TILED;
11122
11123 I915_WRITE(reg, dspcntr);
11124
11125 I915_WRITE(DSPSURF(intel_crtc->plane),
11126 intel_crtc->unpin_work->gtt_offset);
11127 POSTING_READ(DSPSURF(intel_crtc->plane));
11128
11129 }
11130
11131 /*
11132 * XXX: This is the temporary way to update the plane registers until we get
11133 * around to using the usual plane update functions for MMIO flips
11134 */
11135 static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
11136 {
11137 struct drm_device *dev = intel_crtc->base.dev;
11138
11139 intel_mark_page_flip_active(intel_crtc);
11140
11141 intel_pipe_update_start(intel_crtc);
11142
11143 if (INTEL_INFO(dev)->gen >= 9)
11144 skl_do_mmio_flip(intel_crtc);
11145 else
11146 /* use_mmio_flip() retricts MMIO flips to ilk+ */
11147 ilk_do_mmio_flip(intel_crtc);
11148
11149 intel_pipe_update_end(intel_crtc);
11150 }
11151
11152 static void intel_mmio_flip_work_func(struct work_struct *work)
11153 {
11154 struct intel_mmio_flip *mmio_flip =
11155 container_of(work, struct intel_mmio_flip, work);
11156
11157 if (mmio_flip->req)
11158 WARN_ON(__i915_wait_request(mmio_flip->req,
11159 mmio_flip->crtc->reset_counter,
11160 false, NULL,
11161 &mmio_flip->i915->rps.mmioflips));
11162
11163 intel_do_mmio_flip(mmio_flip->crtc);
11164
11165 i915_gem_request_unreference__unlocked(mmio_flip->req);
11166 kfree(mmio_flip);
11167 }
11168
11169 static int intel_queue_mmio_flip(struct drm_device *dev,
11170 struct drm_crtc *crtc,
11171 struct drm_framebuffer *fb,
11172 struct drm_i915_gem_object *obj,
11173 struct intel_engine_cs *ring,
11174 uint32_t flags)
11175 {
11176 struct intel_mmio_flip *mmio_flip;
11177
11178 mmio_flip = kmalloc(sizeof(*mmio_flip), GFP_KERNEL);
11179 if (mmio_flip == NULL)
11180 return -ENOMEM;
11181
11182 mmio_flip->i915 = to_i915(dev);
11183 mmio_flip->req = i915_gem_request_reference(obj->last_write_req);
11184 mmio_flip->crtc = to_intel_crtc(crtc);
11185
11186 INIT_WORK(&mmio_flip->work, intel_mmio_flip_work_func);
11187 schedule_work(&mmio_flip->work);
11188
11189 return 0;
11190 }
11191
11192 static int intel_default_queue_flip(struct drm_device *dev,
11193 struct drm_crtc *crtc,
11194 struct drm_framebuffer *fb,
11195 struct drm_i915_gem_object *obj,
11196 struct drm_i915_gem_request *req,
11197 uint32_t flags)
11198 {
11199 return -ENODEV;
11200 }
11201
11202 static bool __intel_pageflip_stall_check(struct drm_device *dev,
11203 struct drm_crtc *crtc)
11204 {
11205 struct drm_i915_private *dev_priv = dev->dev_private;
11206 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11207 struct intel_unpin_work *work = intel_crtc->unpin_work;
11208 u32 addr;
11209
11210 if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
11211 return true;
11212
11213 if (atomic_read(&work->pending) < INTEL_FLIP_PENDING)
11214 return false;
11215
11216 if (!work->enable_stall_check)
11217 return false;
11218
11219 if (work->flip_ready_vblank == 0) {
11220 if (work->flip_queued_req &&
11221 !i915_gem_request_completed(work->flip_queued_req, true))
11222 return false;
11223
11224 work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
11225 }
11226
11227 if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
11228 return false;
11229
11230 /* Potential stall - if we see that the flip has happened,
11231 * assume a missed interrupt. */
11232 if (INTEL_INFO(dev)->gen >= 4)
11233 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
11234 else
11235 addr = I915_READ(DSPADDR(intel_crtc->plane));
11236
11237 /* There is a potential issue here with a false positive after a flip
11238 * to the same address. We could address this by checking for a
11239 * non-incrementing frame counter.
11240 */
11241 return addr == work->gtt_offset;
11242 }
11243
11244 void intel_check_page_flip(struct drm_device *dev, int pipe)
11245 {
11246 struct drm_i915_private *dev_priv = dev->dev_private;
11247 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
11248 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11249 struct intel_unpin_work *work;
11250
11251 WARN_ON(!in_interrupt());
11252
11253 if (crtc == NULL)
11254 return;
11255
11256 spin_lock(&dev->event_lock);
11257 work = intel_crtc->unpin_work;
11258 if (work != NULL && __intel_pageflip_stall_check(dev, crtc)) {
11259 WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
11260 work->flip_queued_vblank, drm_vblank_count(dev, pipe));
11261 page_flip_completed(intel_crtc);
11262 work = NULL;
11263 }
11264 if (work != NULL &&
11265 drm_vblank_count(dev, pipe) - work->flip_queued_vblank > 1)
11266 intel_queue_rps_boost_for_request(dev, work->flip_queued_req);
11267 spin_unlock(&dev->event_lock);
11268 }
11269
11270 static int intel_crtc_page_flip(struct drm_crtc *crtc,
11271 struct drm_framebuffer *fb,
11272 struct drm_pending_vblank_event *event,
11273 uint32_t page_flip_flags)
11274 {
11275 struct drm_device *dev = crtc->dev;
11276 struct drm_i915_private *dev_priv = dev->dev_private;
11277 struct drm_framebuffer *old_fb = crtc->primary->fb;
11278 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
11279 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11280 struct drm_plane *primary = crtc->primary;
11281 enum pipe pipe = intel_crtc->pipe;
11282 struct intel_unpin_work *work;
11283 struct intel_engine_cs *ring;
11284 bool mmio_flip;
11285 struct drm_i915_gem_request *request = NULL;
11286 int ret;
11287
11288 /*
11289 * drm_mode_page_flip_ioctl() should already catch this, but double
11290 * check to be safe. In the future we may enable pageflipping from
11291 * a disabled primary plane.
11292 */
11293 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
11294 return -EBUSY;
11295
11296 /* Can't change pixel format via MI display flips. */
11297 if (fb->pixel_format != crtc->primary->fb->pixel_format)
11298 return -EINVAL;
11299
11300 /*
11301 * TILEOFF/LINOFF registers can't be changed via MI display flips.
11302 * Note that pitch changes could also affect these register.
11303 */
11304 if (INTEL_INFO(dev)->gen > 3 &&
11305 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
11306 fb->pitches[0] != crtc->primary->fb->pitches[0]))
11307 return -EINVAL;
11308
11309 if (i915_terminally_wedged(&dev_priv->gpu_error))
11310 goto out_hang;
11311
11312 work = kzalloc(sizeof(*work), GFP_KERNEL);
11313 if (work == NULL)
11314 return -ENOMEM;
11315
11316 work->event = event;
11317 work->crtc = crtc;
11318 work->old_fb = old_fb;
11319 INIT_WORK(&work->work, intel_unpin_work_fn);
11320
11321 ret = drm_crtc_vblank_get(crtc);
11322 if (ret)
11323 goto free_work;
11324
11325 /* We borrow the event spin lock for protecting unpin_work */
11326 spin_lock_irq(&dev->event_lock);
11327 if (intel_crtc->unpin_work) {
11328 /* Before declaring the flip queue wedged, check if
11329 * the hardware completed the operation behind our backs.
11330 */
11331 if (__intel_pageflip_stall_check(dev, crtc)) {
11332 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
11333 page_flip_completed(intel_crtc);
11334 } else {
11335 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
11336 spin_unlock_irq(&dev->event_lock);
11337
11338 drm_crtc_vblank_put(crtc);
11339 kfree(work);
11340 return -EBUSY;
11341 }
11342 }
11343 intel_crtc->unpin_work = work;
11344 spin_unlock_irq(&dev->event_lock);
11345
11346 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
11347 flush_workqueue(dev_priv->wq);
11348
11349 /* Reference the objects for the scheduled work. */
11350 drm_framebuffer_reference(work->old_fb);
11351 drm_gem_object_reference(&obj->base);
11352
11353 crtc->primary->fb = fb;
11354 update_state_fb(crtc->primary);
11355
11356 work->pending_flip_obj = obj;
11357
11358 ret = i915_mutex_lock_interruptible(dev);
11359 if (ret)
11360 goto cleanup;
11361
11362 atomic_inc(&intel_crtc->unpin_work_count);
11363 intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
11364
11365 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
11366 work->flip_count = I915_READ(PIPE_FLIPCOUNT_GM45(pipe)) + 1;
11367
11368 if (IS_VALLEYVIEW(dev)) {
11369 ring = &dev_priv->ring[BCS];
11370 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
11371 /* vlv: DISPLAY_FLIP fails to change tiling */
11372 ring = NULL;
11373 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
11374 ring = &dev_priv->ring[BCS];
11375 } else if (INTEL_INFO(dev)->gen >= 7) {
11376 ring = i915_gem_request_get_ring(obj->last_write_req);
11377 if (ring == NULL || ring->id != RCS)
11378 ring = &dev_priv->ring[BCS];
11379 } else {
11380 ring = &dev_priv->ring[RCS];
11381 }
11382
11383 mmio_flip = use_mmio_flip(ring, obj);
11384
11385 /* When using CS flips, we want to emit semaphores between rings.
11386 * However, when using mmio flips we will create a task to do the
11387 * synchronisation, so all we want here is to pin the framebuffer
11388 * into the display plane and skip any waits.
11389 */
11390 ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
11391 crtc->primary->state,
11392 mmio_flip ? i915_gem_request_get_ring(obj->last_write_req) : ring, &request);
11393 if (ret)
11394 goto cleanup_pending;
11395
11396 work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), obj)
11397 + intel_crtc->dspaddr_offset;
11398
11399 if (mmio_flip) {
11400 ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
11401 page_flip_flags);
11402 if (ret)
11403 goto cleanup_unpin;
11404
11405 i915_gem_request_assign(&work->flip_queued_req,
11406 obj->last_write_req);
11407 } else {
11408 if (!request) {
11409 ret = i915_gem_request_alloc(ring, ring->default_context, &request);
11410 if (ret)
11411 goto cleanup_unpin;
11412 }
11413
11414 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
11415 page_flip_flags);
11416 if (ret)
11417 goto cleanup_unpin;
11418
11419 i915_gem_request_assign(&work->flip_queued_req, request);
11420 }
11421
11422 if (request)
11423 i915_add_request_no_flush(request);
11424
11425 work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
11426 work->enable_stall_check = true;
11427
11428 i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
11429 to_intel_plane(primary)->frontbuffer_bit);
11430 mutex_unlock(&dev->struct_mutex);
11431
11432 intel_fbc_disable_crtc(intel_crtc);
11433 intel_frontbuffer_flip_prepare(dev,
11434 to_intel_plane(primary)->frontbuffer_bit);
11435
11436 trace_i915_flip_request(intel_crtc->plane, obj);
11437
11438 return 0;
11439
11440 cleanup_unpin:
11441 intel_unpin_fb_obj(fb, crtc->primary->state);
11442 cleanup_pending:
11443 if (request)
11444 i915_gem_request_cancel(request);
11445 atomic_dec(&intel_crtc->unpin_work_count);
11446 mutex_unlock(&dev->struct_mutex);
11447 cleanup:
11448 crtc->primary->fb = old_fb;
11449 update_state_fb(crtc->primary);
11450
11451 drm_gem_object_unreference_unlocked(&obj->base);
11452 drm_framebuffer_unreference(work->old_fb);
11453
11454 spin_lock_irq(&dev->event_lock);
11455 intel_crtc->unpin_work = NULL;
11456 spin_unlock_irq(&dev->event_lock);
11457
11458 drm_crtc_vblank_put(crtc);
11459 free_work:
11460 kfree(work);
11461
11462 if (ret == -EIO) {
11463 struct drm_atomic_state *state;
11464 struct drm_plane_state *plane_state;
11465
11466 out_hang:
11467 state = drm_atomic_state_alloc(dev);
11468 if (!state)
11469 return -ENOMEM;
11470 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
11471
11472 retry:
11473 plane_state = drm_atomic_get_plane_state(state, primary);
11474 ret = PTR_ERR_OR_ZERO(plane_state);
11475 if (!ret) {
11476 drm_atomic_set_fb_for_plane(plane_state, fb);
11477
11478 ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
11479 if (!ret)
11480 ret = drm_atomic_commit(state);
11481 }
11482
11483 if (ret == -EDEADLK) {
11484 drm_modeset_backoff(state->acquire_ctx);
11485 drm_atomic_state_clear(state);
11486 goto retry;
11487 }
11488
11489 if (ret)
11490 drm_atomic_state_free(state);
11491
11492 if (ret == 0 && event) {
11493 spin_lock_irq(&dev->event_lock);
11494 drm_send_vblank_event(dev, pipe, event);
11495 spin_unlock_irq(&dev->event_lock);
11496 }
11497 }
11498 return ret;
11499 }
11500
11501
11502 /**
11503 * intel_wm_need_update - Check whether watermarks need updating
11504 * @plane: drm plane
11505 * @state: new plane state
11506 *
11507 * Check current plane state versus the new one to determine whether
11508 * watermarks need to be recalculated.
11509 *
11510 * Returns true or false.
11511 */
11512 static bool intel_wm_need_update(struct drm_plane *plane,
11513 struct drm_plane_state *state)
11514 {
11515 /* Update watermarks on tiling changes. */
11516 if (!plane->state->fb || !state->fb ||
11517 plane->state->fb->modifier[0] != state->fb->modifier[0] ||
11518 plane->state->rotation != state->rotation)
11519 return true;
11520
11521 if (plane->state->crtc_w != state->crtc_w)
11522 return true;
11523
11524 return false;
11525 }
11526
11527 int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state,
11528 struct drm_plane_state *plane_state)
11529 {
11530 struct drm_crtc *crtc = crtc_state->crtc;
11531 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11532 struct drm_plane *plane = plane_state->plane;
11533 struct drm_device *dev = crtc->dev;
11534 struct drm_i915_private *dev_priv = dev->dev_private;
11535 struct intel_plane_state *old_plane_state =
11536 to_intel_plane_state(plane->state);
11537 int idx = intel_crtc->base.base.id, ret;
11538 int i = drm_plane_index(plane);
11539 bool mode_changed = needs_modeset(crtc_state);
11540 bool was_crtc_enabled = crtc->state->active;
11541 bool is_crtc_enabled = crtc_state->active;
11542
11543 bool turn_off, turn_on, visible, was_visible;
11544 struct drm_framebuffer *fb = plane_state->fb;
11545
11546 if (crtc_state && INTEL_INFO(dev)->gen >= 9 &&
11547 plane->type != DRM_PLANE_TYPE_CURSOR) {
11548 ret = skl_update_scaler_plane(
11549 to_intel_crtc_state(crtc_state),
11550 to_intel_plane_state(plane_state));
11551 if (ret)
11552 return ret;
11553 }
11554
11555 /*
11556 * Disabling a plane is always okay; we just need to update
11557 * fb tracking in a special way since cleanup_fb() won't
11558 * get called by the plane helpers.
11559 */
11560 if (old_plane_state->base.fb && !fb)
11561 intel_crtc->atomic.disabled_planes |= 1 << i;
11562
11563 was_visible = old_plane_state->visible;
11564 visible = to_intel_plane_state(plane_state)->visible;
11565
11566 if (!was_crtc_enabled && WARN_ON(was_visible))
11567 was_visible = false;
11568
11569 if (!is_crtc_enabled && WARN_ON(visible))
11570 visible = false;
11571
11572 if (!was_visible && !visible)
11573 return 0;
11574
11575 turn_off = was_visible && (!visible || mode_changed);
11576 turn_on = visible && (!was_visible || mode_changed);
11577
11578 DRM_DEBUG_ATOMIC("[CRTC:%i] has [PLANE:%i] with fb %i\n", idx,
11579 plane->base.id, fb ? fb->base.id : -1);
11580
11581 DRM_DEBUG_ATOMIC("[PLANE:%i] visible %i -> %i, off %i, on %i, ms %i\n",
11582 plane->base.id, was_visible, visible,
11583 turn_off, turn_on, mode_changed);
11584
11585 if (turn_on) {
11586 intel_crtc->atomic.update_wm_pre = true;
11587 /* must disable cxsr around plane enable/disable */
11588 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11589 intel_crtc->atomic.disable_cxsr = true;
11590 /* to potentially re-enable cxsr */
11591 intel_crtc->atomic.wait_vblank = true;
11592 intel_crtc->atomic.update_wm_post = true;
11593 }
11594 } else if (turn_off) {
11595 intel_crtc->atomic.update_wm_post = true;
11596 /* must disable cxsr around plane enable/disable */
11597 if (plane->type != DRM_PLANE_TYPE_CURSOR) {
11598 if (is_crtc_enabled)
11599 intel_crtc->atomic.wait_vblank = true;
11600 intel_crtc->atomic.disable_cxsr = true;
11601 }
11602 } else if (intel_wm_need_update(plane, plane_state)) {
11603 intel_crtc->atomic.update_wm_pre = true;
11604 }
11605
11606 if (visible || was_visible)
11607 intel_crtc->atomic.fb_bits |=
11608 to_intel_plane(plane)->frontbuffer_bit;
11609
11610 switch (plane->type) {
11611 case DRM_PLANE_TYPE_PRIMARY:
11612 intel_crtc->atomic.wait_for_flips = true;
11613 intel_crtc->atomic.pre_disable_primary = turn_off;
11614 intel_crtc->atomic.post_enable_primary = turn_on;
11615
11616 if (turn_off) {
11617 /*
11618 * FIXME: Actually if we will still have any other
11619 * plane enabled on the pipe we could let IPS enabled
11620 * still, but for now lets consider that when we make
11621 * primary invisible by setting DSPCNTR to 0 on
11622 * update_primary_plane function IPS needs to be
11623 * disable.
11624 */
11625 intel_crtc->atomic.disable_ips = true;
11626
11627 intel_crtc->atomic.disable_fbc = true;
11628 }
11629
11630 /*
11631 * FBC does not work on some platforms for rotated
11632 * planes, so disable it when rotation is not 0 and
11633 * update it when rotation is set back to 0.
11634 *
11635 * FIXME: This is redundant with the fbc update done in
11636 * the primary plane enable function except that that
11637 * one is done too late. We eventually need to unify
11638 * this.
11639 */
11640
11641 if (visible &&
11642 INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
11643 dev_priv->fbc.crtc == intel_crtc &&
11644 plane_state->rotation != BIT(DRM_ROTATE_0))
11645 intel_crtc->atomic.disable_fbc = true;
11646
11647 /*
11648 * BDW signals flip done immediately if the plane
11649 * is disabled, even if the plane enable is already
11650 * armed to occur at the next vblank :(
11651 */
11652 if (turn_on && IS_BROADWELL(dev))
11653 intel_crtc->atomic.wait_vblank = true;
11654
11655 intel_crtc->atomic.update_fbc |= visible || mode_changed;
11656 break;
11657 case DRM_PLANE_TYPE_CURSOR:
11658 break;
11659 case DRM_PLANE_TYPE_OVERLAY:
11660 if (turn_off && !mode_changed) {
11661 intel_crtc->atomic.wait_vblank = true;
11662 intel_crtc->atomic.update_sprite_watermarks |=
11663 1 << i;
11664 }
11665 }
11666 return 0;
11667 }
11668
11669 static bool encoders_cloneable(const struct intel_encoder *a,
11670 const struct intel_encoder *b)
11671 {
11672 /* masks could be asymmetric, so check both ways */
11673 return a == b || (a->cloneable & (1 << b->type) &&
11674 b->cloneable & (1 << a->type));
11675 }
11676
11677 static bool check_single_encoder_cloning(struct drm_atomic_state *state,
11678 struct intel_crtc *crtc,
11679 struct intel_encoder *encoder)
11680 {
11681 struct intel_encoder *source_encoder;
11682 struct drm_connector *connector;
11683 struct drm_connector_state *connector_state;
11684 int i;
11685
11686 for_each_connector_in_state(state, connector, connector_state, i) {
11687 if (connector_state->crtc != &crtc->base)
11688 continue;
11689
11690 source_encoder =
11691 to_intel_encoder(connector_state->best_encoder);
11692 if (!encoders_cloneable(encoder, source_encoder))
11693 return false;
11694 }
11695
11696 return true;
11697 }
11698
11699 static bool check_encoder_cloning(struct drm_atomic_state *state,
11700 struct intel_crtc *crtc)
11701 {
11702 struct intel_encoder *encoder;
11703 struct drm_connector *connector;
11704 struct drm_connector_state *connector_state;
11705 int i;
11706
11707 for_each_connector_in_state(state, connector, connector_state, i) {
11708 if (connector_state->crtc != &crtc->base)
11709 continue;
11710
11711 encoder = to_intel_encoder(connector_state->best_encoder);
11712 if (!check_single_encoder_cloning(state, crtc, encoder))
11713 return false;
11714 }
11715
11716 return true;
11717 }
11718
11719 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
11720 struct drm_crtc_state *crtc_state)
11721 {
11722 struct drm_device *dev = crtc->dev;
11723 struct drm_i915_private *dev_priv = dev->dev_private;
11724 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
11725 struct intel_crtc_state *pipe_config =
11726 to_intel_crtc_state(crtc_state);
11727 struct drm_atomic_state *state = crtc_state->state;
11728 int ret;
11729 bool mode_changed = needs_modeset(crtc_state);
11730
11731 if (mode_changed && !check_encoder_cloning(state, intel_crtc)) {
11732 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
11733 return -EINVAL;
11734 }
11735
11736 if (mode_changed && !crtc_state->active)
11737 intel_crtc->atomic.update_wm_post = true;
11738
11739 if (mode_changed && crtc_state->enable &&
11740 dev_priv->display.crtc_compute_clock &&
11741 !WARN_ON(pipe_config->shared_dpll != DPLL_ID_PRIVATE)) {
11742 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
11743 pipe_config);
11744 if (ret)
11745 return ret;
11746 }
11747
11748 ret = 0;
11749 if (INTEL_INFO(dev)->gen >= 9) {
11750 if (mode_changed)
11751 ret = skl_update_scaler_crtc(pipe_config);
11752
11753 if (!ret)
11754 ret = intel_atomic_setup_scalers(dev, intel_crtc,
11755 pipe_config);
11756 }
11757
11758 return ret;
11759 }
11760
11761 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
11762 .mode_set_base_atomic = intel_pipe_set_base_atomic,
11763 .load_lut = intel_crtc_load_lut,
11764 .atomic_begin = intel_begin_crtc_commit,
11765 .atomic_flush = intel_finish_crtc_commit,
11766 .atomic_check = intel_crtc_atomic_check,
11767 };
11768
11769 static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
11770 {
11771 struct intel_connector *connector;
11772
11773 for_each_intel_connector(dev, connector) {
11774 if (connector->base.encoder) {
11775 connector->base.state->best_encoder =
11776 connector->base.encoder;
11777 connector->base.state->crtc =
11778 connector->base.encoder->crtc;
11779 } else {
11780 connector->base.state->best_encoder = NULL;
11781 connector->base.state->crtc = NULL;
11782 }
11783 }
11784 }
11785
11786 static void
11787 connected_sink_compute_bpp(struct intel_connector *connector,
11788 struct intel_crtc_state *pipe_config)
11789 {
11790 int bpp = pipe_config->pipe_bpp;
11791
11792 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
11793 connector->base.base.id,
11794 connector->base.name);
11795
11796 /* Don't use an invalid EDID bpc value */
11797 if (connector->base.display_info.bpc &&
11798 connector->base.display_info.bpc * 3 < bpp) {
11799 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
11800 bpp, connector->base.display_info.bpc*3);
11801 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
11802 }
11803
11804 /* Clamp bpp to 8 on screens without EDID 1.4 */
11805 if (connector->base.display_info.bpc == 0 && bpp > 24) {
11806 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
11807 bpp);
11808 pipe_config->pipe_bpp = 24;
11809 }
11810 }
11811
11812 static int
11813 compute_baseline_pipe_bpp(struct intel_crtc *crtc,
11814 struct intel_crtc_state *pipe_config)
11815 {
11816 struct drm_device *dev = crtc->base.dev;
11817 struct drm_atomic_state *state;
11818 struct drm_connector *connector;
11819 struct drm_connector_state *connector_state;
11820 int bpp, i;
11821
11822 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)))
11823 bpp = 10*3;
11824 else if (INTEL_INFO(dev)->gen >= 5)
11825 bpp = 12*3;
11826 else
11827 bpp = 8*3;
11828
11829
11830 pipe_config->pipe_bpp = bpp;
11831
11832 state = pipe_config->base.state;
11833
11834 /* Clamp display bpp to EDID value */
11835 for_each_connector_in_state(state, connector, connector_state, i) {
11836 if (connector_state->crtc != &crtc->base)
11837 continue;
11838
11839 connected_sink_compute_bpp(to_intel_connector(connector),
11840 pipe_config);
11841 }
11842
11843 return bpp;
11844 }
11845
11846 static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
11847 {
11848 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
11849 "type: 0x%x flags: 0x%x\n",
11850 mode->crtc_clock,
11851 mode->crtc_hdisplay, mode->crtc_hsync_start,
11852 mode->crtc_hsync_end, mode->crtc_htotal,
11853 mode->crtc_vdisplay, mode->crtc_vsync_start,
11854 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
11855 }
11856
11857 static void intel_dump_pipe_config(struct intel_crtc *crtc,
11858 struct intel_crtc_state *pipe_config,
11859 const char *context)
11860 {
11861 struct drm_device *dev = crtc->base.dev;
11862 struct drm_plane *plane;
11863 struct intel_plane *intel_plane;
11864 struct intel_plane_state *state;
11865 struct drm_framebuffer *fb;
11866
11867 DRM_DEBUG_KMS("[CRTC:%d]%s config %p for pipe %c\n", crtc->base.base.id,
11868 context, pipe_config, pipe_name(crtc->pipe));
11869
11870 DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
11871 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
11872 pipe_config->pipe_bpp, pipe_config->dither);
11873 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11874 pipe_config->has_pch_encoder,
11875 pipe_config->fdi_lanes,
11876 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
11877 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
11878 pipe_config->fdi_m_n.tu);
11879 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11880 pipe_config->has_dp_encoder,
11881 pipe_config->lane_count,
11882 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
11883 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
11884 pipe_config->dp_m_n.tu);
11885
11886 DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
11887 pipe_config->has_dp_encoder,
11888 pipe_config->lane_count,
11889 pipe_config->dp_m2_n2.gmch_m,
11890 pipe_config->dp_m2_n2.gmch_n,
11891 pipe_config->dp_m2_n2.link_m,
11892 pipe_config->dp_m2_n2.link_n,
11893 pipe_config->dp_m2_n2.tu);
11894
11895 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
11896 pipe_config->has_audio,
11897 pipe_config->has_infoframe);
11898
11899 DRM_DEBUG_KMS("requested mode:\n");
11900 drm_mode_debug_printmodeline(&pipe_config->base.mode);
11901 DRM_DEBUG_KMS("adjusted mode:\n");
11902 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
11903 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
11904 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
11905 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
11906 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
11907 DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
11908 crtc->num_scalers,
11909 pipe_config->scaler_state.scaler_users,
11910 pipe_config->scaler_state.scaler_id);
11911 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
11912 pipe_config->gmch_pfit.control,
11913 pipe_config->gmch_pfit.pgm_ratios,
11914 pipe_config->gmch_pfit.lvds_border_bits);
11915 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
11916 pipe_config->pch_pfit.pos,
11917 pipe_config->pch_pfit.size,
11918 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
11919 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
11920 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
11921
11922 if (IS_BROXTON(dev)) {
11923 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
11924 "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
11925 "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
11926 pipe_config->ddi_pll_sel,
11927 pipe_config->dpll_hw_state.ebb0,
11928 pipe_config->dpll_hw_state.ebb4,
11929 pipe_config->dpll_hw_state.pll0,
11930 pipe_config->dpll_hw_state.pll1,
11931 pipe_config->dpll_hw_state.pll2,
11932 pipe_config->dpll_hw_state.pll3,
11933 pipe_config->dpll_hw_state.pll6,
11934 pipe_config->dpll_hw_state.pll8,
11935 pipe_config->dpll_hw_state.pll9,
11936 pipe_config->dpll_hw_state.pll10,
11937 pipe_config->dpll_hw_state.pcsdw12);
11938 } else if (IS_SKYLAKE(dev)) {
11939 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: "
11940 "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
11941 pipe_config->ddi_pll_sel,
11942 pipe_config->dpll_hw_state.ctrl1,
11943 pipe_config->dpll_hw_state.cfgcr1,
11944 pipe_config->dpll_hw_state.cfgcr2);
11945 } else if (HAS_DDI(dev)) {
11946 DRM_DEBUG_KMS("ddi_pll_sel: %u; dpll_hw_state: wrpll: 0x%x\n",
11947 pipe_config->ddi_pll_sel,
11948 pipe_config->dpll_hw_state.wrpll);
11949 } else {
11950 DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
11951 "fp0: 0x%x, fp1: 0x%x\n",
11952 pipe_config->dpll_hw_state.dpll,
11953 pipe_config->dpll_hw_state.dpll_md,
11954 pipe_config->dpll_hw_state.fp0,
11955 pipe_config->dpll_hw_state.fp1);
11956 }
11957
11958 DRM_DEBUG_KMS("planes on this crtc\n");
11959 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
11960 intel_plane = to_intel_plane(plane);
11961 if (intel_plane->pipe != crtc->pipe)
11962 continue;
11963
11964 state = to_intel_plane_state(plane->state);
11965 fb = state->base.fb;
11966 if (!fb) {
11967 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d "
11968 "disabled, scaler_id = %d\n",
11969 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
11970 plane->base.id, intel_plane->pipe,
11971 (crtc->base.primary == plane) ? 0 : intel_plane->plane + 1,
11972 drm_plane_index(plane), state->scaler_id);
11973 continue;
11974 }
11975
11976 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d enabled",
11977 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
11978 plane->base.id, intel_plane->pipe,
11979 crtc->base.primary == plane ? 0 : intel_plane->plane + 1,
11980 drm_plane_index(plane));
11981 DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = 0x%x",
11982 fb->base.id, fb->width, fb->height, fb->pixel_format);
11983 DRM_DEBUG_KMS("\tscaler:%d src (%u, %u) %ux%u dst (%u, %u) %ux%u\n",
11984 state->scaler_id,
11985 state->src.x1 >> 16, state->src.y1 >> 16,
11986 drm_rect_width(&state->src) >> 16,
11987 drm_rect_height(&state->src) >> 16,
11988 state->dst.x1, state->dst.y1,
11989 drm_rect_width(&state->dst), drm_rect_height(&state->dst));
11990 }
11991 }
11992
11993 static bool check_digital_port_conflicts(struct drm_atomic_state *state)
11994 {
11995 struct drm_device *dev = state->dev;
11996 struct intel_encoder *encoder;
11997 struct drm_connector *connector;
11998 struct drm_connector_state *connector_state;
11999 unsigned int used_ports = 0;
12000 int i;
12001
12002 /*
12003 * Walk the connector list instead of the encoder
12004 * list to detect the problem on ddi platforms
12005 * where there's just one encoder per digital port.
12006 */
12007 for_each_connector_in_state(state, connector, connector_state, i) {
12008 if (!connector_state->best_encoder)
12009 continue;
12010
12011 encoder = to_intel_encoder(connector_state->best_encoder);
12012
12013 WARN_ON(!connector_state->crtc);
12014
12015 switch (encoder->type) {
12016 unsigned int port_mask;
12017 case INTEL_OUTPUT_UNKNOWN:
12018 if (WARN_ON(!HAS_DDI(dev)))
12019 break;
12020 case INTEL_OUTPUT_DISPLAYPORT:
12021 case INTEL_OUTPUT_HDMI:
12022 case INTEL_OUTPUT_EDP:
12023 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
12024
12025 /* the same port mustn't appear more than once */
12026 if (used_ports & port_mask)
12027 return false;
12028
12029 used_ports |= port_mask;
12030 default:
12031 break;
12032 }
12033 }
12034
12035 return true;
12036 }
12037
12038 static void
12039 clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
12040 {
12041 struct drm_crtc_state tmp_state;
12042 struct intel_crtc_scaler_state scaler_state;
12043 struct intel_dpll_hw_state dpll_hw_state;
12044 enum intel_dpll_id shared_dpll;
12045 uint32_t ddi_pll_sel;
12046 bool force_thru;
12047
12048 /* FIXME: before the switch to atomic started, a new pipe_config was
12049 * kzalloc'd. Code that depends on any field being zero should be
12050 * fixed, so that the crtc_state can be safely duplicated. For now,
12051 * only fields that are know to not cause problems are preserved. */
12052
12053 tmp_state = crtc_state->base;
12054 scaler_state = crtc_state->scaler_state;
12055 shared_dpll = crtc_state->shared_dpll;
12056 dpll_hw_state = crtc_state->dpll_hw_state;
12057 ddi_pll_sel = crtc_state->ddi_pll_sel;
12058 force_thru = crtc_state->pch_pfit.force_thru;
12059
12060 memset(crtc_state, 0, sizeof *crtc_state);
12061
12062 crtc_state->base = tmp_state;
12063 crtc_state->scaler_state = scaler_state;
12064 crtc_state->shared_dpll = shared_dpll;
12065 crtc_state->dpll_hw_state = dpll_hw_state;
12066 crtc_state->ddi_pll_sel = ddi_pll_sel;
12067 crtc_state->pch_pfit.force_thru = force_thru;
12068 }
12069
12070 static int
12071 intel_modeset_pipe_config(struct drm_crtc *crtc,
12072 struct intel_crtc_state *pipe_config)
12073 {
12074 struct drm_atomic_state *state = pipe_config->base.state;
12075 struct intel_encoder *encoder;
12076 struct drm_connector *connector;
12077 struct drm_connector_state *connector_state;
12078 int base_bpp, ret = -EINVAL;
12079 int i;
12080 bool retry = true;
12081
12082 clear_intel_crtc_state(pipe_config);
12083
12084 pipe_config->cpu_transcoder =
12085 (enum transcoder) to_intel_crtc(crtc)->pipe;
12086
12087 /*
12088 * Sanitize sync polarity flags based on requested ones. If neither
12089 * positive or negative polarity is requested, treat this as meaning
12090 * negative polarity.
12091 */
12092 if (!(pipe_config->base.adjusted_mode.flags &
12093 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
12094 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
12095
12096 if (!(pipe_config->base.adjusted_mode.flags &
12097 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
12098 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
12099
12100 base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
12101 pipe_config);
12102 if (base_bpp < 0)
12103 goto fail;
12104
12105 /*
12106 * Determine the real pipe dimensions. Note that stereo modes can
12107 * increase the actual pipe size due to the frame doubling and
12108 * insertion of additional space for blanks between the frame. This
12109 * is stored in the crtc timings. We use the requested mode to do this
12110 * computation to clearly distinguish it from the adjusted mode, which
12111 * can be changed by the connectors in the below retry loop.
12112 */
12113 drm_crtc_get_hv_timing(&pipe_config->base.mode,
12114 &pipe_config->pipe_src_w,
12115 &pipe_config->pipe_src_h);
12116
12117 encoder_retry:
12118 /* Ensure the port clock defaults are reset when retrying. */
12119 pipe_config->port_clock = 0;
12120 pipe_config->pixel_multiplier = 1;
12121
12122 /* Fill in default crtc timings, allow encoders to overwrite them. */
12123 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
12124 CRTC_STEREO_DOUBLE);
12125
12126 /* Pass our mode to the connectors and the CRTC to give them a chance to
12127 * adjust it according to limitations or connector properties, and also
12128 * a chance to reject the mode entirely.
12129 */
12130 for_each_connector_in_state(state, connector, connector_state, i) {
12131 if (connector_state->crtc != crtc)
12132 continue;
12133
12134 encoder = to_intel_encoder(connector_state->best_encoder);
12135
12136 if (!(encoder->compute_config(encoder, pipe_config))) {
12137 DRM_DEBUG_KMS("Encoder config failure\n");
12138 goto fail;
12139 }
12140 }
12141
12142 /* Set default port clock if not overwritten by the encoder. Needs to be
12143 * done afterwards in case the encoder adjusts the mode. */
12144 if (!pipe_config->port_clock)
12145 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
12146 * pipe_config->pixel_multiplier;
12147
12148 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
12149 if (ret < 0) {
12150 DRM_DEBUG_KMS("CRTC fixup failed\n");
12151 goto fail;
12152 }
12153
12154 if (ret == RETRY) {
12155 if (WARN(!retry, "loop in pipe configuration computation\n")) {
12156 ret = -EINVAL;
12157 goto fail;
12158 }
12159
12160 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
12161 retry = false;
12162 goto encoder_retry;
12163 }
12164
12165 /* Dithering seems to not pass-through bits correctly when it should, so
12166 * only enable it on 6bpc panels. */
12167 pipe_config->dither = pipe_config->pipe_bpp == 6*3;
12168 DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
12169 base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
12170
12171 fail:
12172 return ret;
12173 }
12174
12175 static void
12176 intel_modeset_update_crtc_state(struct drm_atomic_state *state)
12177 {
12178 struct drm_crtc *crtc;
12179 struct drm_crtc_state *crtc_state;
12180 int i;
12181
12182 /* Double check state. */
12183 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12184 to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
12185
12186 /* Update hwmode for vblank functions */
12187 if (crtc->state->active)
12188 crtc->hwmode = crtc->state->adjusted_mode;
12189 else
12190 crtc->hwmode.crtc_clock = 0;
12191 }
12192 }
12193
12194 static bool intel_fuzzy_clock_check(int clock1, int clock2)
12195 {
12196 int diff;
12197
12198 if (clock1 == clock2)
12199 return true;
12200
12201 if (!clock1 || !clock2)
12202 return false;
12203
12204 diff = abs(clock1 - clock2);
12205
12206 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
12207 return true;
12208
12209 return false;
12210 }
12211
12212 #define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
12213 list_for_each_entry((intel_crtc), \
12214 &(dev)->mode_config.crtc_list, \
12215 base.head) \
12216 if (mask & (1 <<(intel_crtc)->pipe))
12217
12218
12219 static bool
12220 intel_compare_m_n(unsigned int m, unsigned int n,
12221 unsigned int m2, unsigned int n2,
12222 bool exact)
12223 {
12224 if (m == m2 && n == n2)
12225 return true;
12226
12227 if (exact || !m || !n || !m2 || !n2)
12228 return false;
12229
12230 BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
12231
12232 if (m > m2) {
12233 while (m > m2) {
12234 m2 <<= 1;
12235 n2 <<= 1;
12236 }
12237 } else if (m < m2) {
12238 while (m < m2) {
12239 m <<= 1;
12240 n <<= 1;
12241 }
12242 }
12243
12244 return m == m2 && n == n2;
12245 }
12246
12247 static bool
12248 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
12249 struct intel_link_m_n *m2_n2,
12250 bool adjust)
12251 {
12252 if (m_n->tu == m2_n2->tu &&
12253 intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
12254 m2_n2->gmch_m, m2_n2->gmch_n, !adjust) &&
12255 intel_compare_m_n(m_n->link_m, m_n->link_n,
12256 m2_n2->link_m, m2_n2->link_n, !adjust)) {
12257 if (adjust)
12258 *m2_n2 = *m_n;
12259
12260 return true;
12261 }
12262
12263 return false;
12264 }
12265
12266 static bool
12267 intel_pipe_config_compare(struct drm_device *dev,
12268 struct intel_crtc_state *current_config,
12269 struct intel_crtc_state *pipe_config,
12270 bool adjust)
12271 {
12272 bool ret = true;
12273
12274 #define INTEL_ERR_OR_DBG_KMS(fmt, ...) \
12275 do { \
12276 if (!adjust) \
12277 DRM_ERROR(fmt, ##__VA_ARGS__); \
12278 else \
12279 DRM_DEBUG_KMS(fmt, ##__VA_ARGS__); \
12280 } while (0)
12281
12282 #define PIPE_CONF_CHECK_X(name) \
12283 if (current_config->name != pipe_config->name) { \
12284 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12285 "(expected 0x%08x, found 0x%08x)\n", \
12286 current_config->name, \
12287 pipe_config->name); \
12288 ret = false; \
12289 }
12290
12291 #define PIPE_CONF_CHECK_I(name) \
12292 if (current_config->name != pipe_config->name) { \
12293 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12294 "(expected %i, found %i)\n", \
12295 current_config->name, \
12296 pipe_config->name); \
12297 ret = false; \
12298 }
12299
12300 #define PIPE_CONF_CHECK_M_N(name) \
12301 if (!intel_compare_link_m_n(&current_config->name, \
12302 &pipe_config->name,\
12303 adjust)) { \
12304 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12305 "(expected tu %i gmch %i/%i link %i/%i, " \
12306 "found tu %i, gmch %i/%i link %i/%i)\n", \
12307 current_config->name.tu, \
12308 current_config->name.gmch_m, \
12309 current_config->name.gmch_n, \
12310 current_config->name.link_m, \
12311 current_config->name.link_n, \
12312 pipe_config->name.tu, \
12313 pipe_config->name.gmch_m, \
12314 pipe_config->name.gmch_n, \
12315 pipe_config->name.link_m, \
12316 pipe_config->name.link_n); \
12317 ret = false; \
12318 }
12319
12320 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) \
12321 if (!intel_compare_link_m_n(&current_config->name, \
12322 &pipe_config->name, adjust) && \
12323 !intel_compare_link_m_n(&current_config->alt_name, \
12324 &pipe_config->name, adjust)) { \
12325 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12326 "(expected tu %i gmch %i/%i link %i/%i, " \
12327 "or tu %i gmch %i/%i link %i/%i, " \
12328 "found tu %i, gmch %i/%i link %i/%i)\n", \
12329 current_config->name.tu, \
12330 current_config->name.gmch_m, \
12331 current_config->name.gmch_n, \
12332 current_config->name.link_m, \
12333 current_config->name.link_n, \
12334 current_config->alt_name.tu, \
12335 current_config->alt_name.gmch_m, \
12336 current_config->alt_name.gmch_n, \
12337 current_config->alt_name.link_m, \
12338 current_config->alt_name.link_n, \
12339 pipe_config->name.tu, \
12340 pipe_config->name.gmch_m, \
12341 pipe_config->name.gmch_n, \
12342 pipe_config->name.link_m, \
12343 pipe_config->name.link_n); \
12344 ret = false; \
12345 }
12346
12347 /* This is required for BDW+ where there is only one set of registers for
12348 * switching between high and low RR.
12349 * This macro can be used whenever a comparison has to be made between one
12350 * hw state and multiple sw state variables.
12351 */
12352 #define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
12353 if ((current_config->name != pipe_config->name) && \
12354 (current_config->alt_name != pipe_config->name)) { \
12355 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12356 "(expected %i or %i, found %i)\n", \
12357 current_config->name, \
12358 current_config->alt_name, \
12359 pipe_config->name); \
12360 ret = false; \
12361 }
12362
12363 #define PIPE_CONF_CHECK_FLAGS(name, mask) \
12364 if ((current_config->name ^ pipe_config->name) & (mask)) { \
12365 INTEL_ERR_OR_DBG_KMS("mismatch in " #name "(" #mask ") " \
12366 "(expected %i, found %i)\n", \
12367 current_config->name & (mask), \
12368 pipe_config->name & (mask)); \
12369 ret = false; \
12370 }
12371
12372 #define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
12373 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
12374 INTEL_ERR_OR_DBG_KMS("mismatch in " #name " " \
12375 "(expected %i, found %i)\n", \
12376 current_config->name, \
12377 pipe_config->name); \
12378 ret = false; \
12379 }
12380
12381 #define PIPE_CONF_QUIRK(quirk) \
12382 ((current_config->quirks | pipe_config->quirks) & (quirk))
12383
12384 PIPE_CONF_CHECK_I(cpu_transcoder);
12385
12386 PIPE_CONF_CHECK_I(has_pch_encoder);
12387 PIPE_CONF_CHECK_I(fdi_lanes);
12388 PIPE_CONF_CHECK_M_N(fdi_m_n);
12389
12390 PIPE_CONF_CHECK_I(has_dp_encoder);
12391 PIPE_CONF_CHECK_I(lane_count);
12392
12393 if (INTEL_INFO(dev)->gen < 8) {
12394 PIPE_CONF_CHECK_M_N(dp_m_n);
12395
12396 PIPE_CONF_CHECK_I(has_drrs);
12397 if (current_config->has_drrs)
12398 PIPE_CONF_CHECK_M_N(dp_m2_n2);
12399 } else
12400 PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
12401
12402 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
12403 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
12404 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
12405 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
12406 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
12407 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
12408
12409 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
12410 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
12411 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
12412 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
12413 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
12414 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
12415
12416 PIPE_CONF_CHECK_I(pixel_multiplier);
12417 PIPE_CONF_CHECK_I(has_hdmi_sink);
12418 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
12419 IS_VALLEYVIEW(dev))
12420 PIPE_CONF_CHECK_I(limited_color_range);
12421 PIPE_CONF_CHECK_I(has_infoframe);
12422
12423 PIPE_CONF_CHECK_I(has_audio);
12424
12425 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12426 DRM_MODE_FLAG_INTERLACE);
12427
12428 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
12429 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12430 DRM_MODE_FLAG_PHSYNC);
12431 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12432 DRM_MODE_FLAG_NHSYNC);
12433 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12434 DRM_MODE_FLAG_PVSYNC);
12435 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
12436 DRM_MODE_FLAG_NVSYNC);
12437 }
12438
12439 PIPE_CONF_CHECK_I(pipe_src_w);
12440 PIPE_CONF_CHECK_I(pipe_src_h);
12441
12442 PIPE_CONF_CHECK_X(gmch_pfit.control);
12443 /* pfit ratios are autocomputed by the hw on gen4+ */
12444 if (INTEL_INFO(dev)->gen < 4)
12445 PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
12446 PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
12447
12448 PIPE_CONF_CHECK_I(pch_pfit.enabled);
12449 if (current_config->pch_pfit.enabled) {
12450 PIPE_CONF_CHECK_X(pch_pfit.pos);
12451 PIPE_CONF_CHECK_X(pch_pfit.size);
12452 }
12453
12454 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
12455
12456 /* BDW+ don't expose a synchronous way to read the state */
12457 if (IS_HASWELL(dev))
12458 PIPE_CONF_CHECK_I(ips_enabled);
12459
12460 PIPE_CONF_CHECK_I(double_wide);
12461
12462 PIPE_CONF_CHECK_X(ddi_pll_sel);
12463
12464 PIPE_CONF_CHECK_I(shared_dpll);
12465 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
12466 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
12467 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
12468 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
12469 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
12470 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
12471 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
12472 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
12473
12474 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
12475 PIPE_CONF_CHECK_I(pipe_bpp);
12476
12477 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
12478 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
12479
12480 #undef PIPE_CONF_CHECK_X
12481 #undef PIPE_CONF_CHECK_I
12482 #undef PIPE_CONF_CHECK_I_ALT
12483 #undef PIPE_CONF_CHECK_FLAGS
12484 #undef PIPE_CONF_CHECK_CLOCK_FUZZY
12485 #undef PIPE_CONF_QUIRK
12486 #undef INTEL_ERR_OR_DBG_KMS
12487
12488 return ret;
12489 }
12490
12491 static void check_wm_state(struct drm_device *dev)
12492 {
12493 struct drm_i915_private *dev_priv = dev->dev_private;
12494 struct skl_ddb_allocation hw_ddb, *sw_ddb;
12495 struct intel_crtc *intel_crtc;
12496 int plane;
12497
12498 if (INTEL_INFO(dev)->gen < 9)
12499 return;
12500
12501 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
12502 sw_ddb = &dev_priv->wm.skl_hw.ddb;
12503
12504 for_each_intel_crtc(dev, intel_crtc) {
12505 struct skl_ddb_entry *hw_entry, *sw_entry;
12506 const enum pipe pipe = intel_crtc->pipe;
12507
12508 if (!intel_crtc->active)
12509 continue;
12510
12511 /* planes */
12512 for_each_plane(dev_priv, pipe, plane) {
12513 hw_entry = &hw_ddb.plane[pipe][plane];
12514 sw_entry = &sw_ddb->plane[pipe][plane];
12515
12516 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12517 continue;
12518
12519 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
12520 "(expected (%u,%u), found (%u,%u))\n",
12521 pipe_name(pipe), plane + 1,
12522 sw_entry->start, sw_entry->end,
12523 hw_entry->start, hw_entry->end);
12524 }
12525
12526 /* cursor */
12527 hw_entry = &hw_ddb.cursor[pipe];
12528 sw_entry = &sw_ddb->cursor[pipe];
12529
12530 if (skl_ddb_entry_equal(hw_entry, sw_entry))
12531 continue;
12532
12533 DRM_ERROR("mismatch in DDB state pipe %c cursor "
12534 "(expected (%u,%u), found (%u,%u))\n",
12535 pipe_name(pipe),
12536 sw_entry->start, sw_entry->end,
12537 hw_entry->start, hw_entry->end);
12538 }
12539 }
12540
12541 static void
12542 check_connector_state(struct drm_device *dev,
12543 struct drm_atomic_state *old_state)
12544 {
12545 struct drm_connector_state *old_conn_state;
12546 struct drm_connector *connector;
12547 int i;
12548
12549 for_each_connector_in_state(old_state, connector, old_conn_state, i) {
12550 struct drm_encoder *encoder = connector->encoder;
12551 struct drm_connector_state *state = connector->state;
12552
12553 /* This also checks the encoder/connector hw state with the
12554 * ->get_hw_state callbacks. */
12555 intel_connector_check_state(to_intel_connector(connector));
12556
12557 I915_STATE_WARN(state->best_encoder != encoder,
12558 "connector's atomic encoder doesn't match legacy encoder\n");
12559 }
12560 }
12561
12562 static void
12563 check_encoder_state(struct drm_device *dev)
12564 {
12565 struct intel_encoder *encoder;
12566 struct intel_connector *connector;
12567
12568 for_each_intel_encoder(dev, encoder) {
12569 bool enabled = false;
12570 enum pipe pipe;
12571
12572 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
12573 encoder->base.base.id,
12574 encoder->base.name);
12575
12576 for_each_intel_connector(dev, connector) {
12577 if (connector->base.state->best_encoder != &encoder->base)
12578 continue;
12579 enabled = true;
12580
12581 I915_STATE_WARN(connector->base.state->crtc !=
12582 encoder->base.crtc,
12583 "connector's crtc doesn't match encoder crtc\n");
12584 }
12585
12586 I915_STATE_WARN(!!encoder->base.crtc != enabled,
12587 "encoder's enabled state mismatch "
12588 "(expected %i, found %i)\n",
12589 !!encoder->base.crtc, enabled);
12590
12591 if (!encoder->base.crtc) {
12592 bool active;
12593
12594 active = encoder->get_hw_state(encoder, &pipe);
12595 I915_STATE_WARN(active,
12596 "encoder detached but still enabled on pipe %c.\n",
12597 pipe_name(pipe));
12598 }
12599 }
12600 }
12601
12602 static void
12603 check_crtc_state(struct drm_device *dev, struct drm_atomic_state *old_state)
12604 {
12605 struct drm_i915_private *dev_priv = dev->dev_private;
12606 struct intel_encoder *encoder;
12607 struct drm_crtc_state *old_crtc_state;
12608 struct drm_crtc *crtc;
12609 int i;
12610
12611 for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
12612 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
12613 struct intel_crtc_state *pipe_config, *sw_config;
12614 bool active;
12615
12616 if (!needs_modeset(crtc->state))
12617 continue;
12618
12619 __drm_atomic_helper_crtc_destroy_state(crtc, old_crtc_state);
12620 pipe_config = to_intel_crtc_state(old_crtc_state);
12621 memset(pipe_config, 0, sizeof(*pipe_config));
12622 pipe_config->base.crtc = crtc;
12623 pipe_config->base.state = old_state;
12624
12625 DRM_DEBUG_KMS("[CRTC:%d]\n",
12626 crtc->base.id);
12627
12628 active = dev_priv->display.get_pipe_config(intel_crtc,
12629 pipe_config);
12630
12631 /* hw state is inconsistent with the pipe quirk */
12632 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
12633 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
12634 active = crtc->state->active;
12635
12636 I915_STATE_WARN(crtc->state->active != active,
12637 "crtc active state doesn't match with hw state "
12638 "(expected %i, found %i)\n", crtc->state->active, active);
12639
12640 I915_STATE_WARN(intel_crtc->active != crtc->state->active,
12641 "transitional active state does not match atomic hw state "
12642 "(expected %i, found %i)\n", crtc->state->active, intel_crtc->active);
12643
12644 for_each_encoder_on_crtc(dev, crtc, encoder) {
12645 enum pipe pipe;
12646
12647 active = encoder->get_hw_state(encoder, &pipe);
12648 I915_STATE_WARN(active != crtc->state->active,
12649 "[ENCODER:%i] active %i with crtc active %i\n",
12650 encoder->base.base.id, active, crtc->state->active);
12651
12652 I915_STATE_WARN(active && intel_crtc->pipe != pipe,
12653 "Encoder connected to wrong pipe %c\n",
12654 pipe_name(pipe));
12655
12656 if (active)
12657 encoder->get_config(encoder, pipe_config);
12658 }
12659
12660 if (!crtc->state->active)
12661 continue;
12662
12663 sw_config = to_intel_crtc_state(crtc->state);
12664 if (!intel_pipe_config_compare(dev, sw_config,
12665 pipe_config, false)) {
12666 I915_STATE_WARN(1, "pipe state doesn't match!\n");
12667 intel_dump_pipe_config(intel_crtc, pipe_config,
12668 "[hw state]");
12669 intel_dump_pipe_config(intel_crtc, sw_config,
12670 "[sw state]");
12671 }
12672 }
12673 }
12674
12675 static void
12676 check_shared_dpll_state(struct drm_device *dev)
12677 {
12678 struct drm_i915_private *dev_priv = dev->dev_private;
12679 struct intel_crtc *crtc;
12680 struct intel_dpll_hw_state dpll_hw_state;
12681 int i;
12682
12683 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
12684 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
12685 int enabled_crtcs = 0, active_crtcs = 0;
12686 bool active;
12687
12688 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
12689
12690 DRM_DEBUG_KMS("%s\n", pll->name);
12691
12692 active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
12693
12694 I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
12695 "more active pll users than references: %i vs %i\n",
12696 pll->active, hweight32(pll->config.crtc_mask));
12697 I915_STATE_WARN(pll->active && !pll->on,
12698 "pll in active use but not on in sw tracking\n");
12699 I915_STATE_WARN(pll->on && !pll->active,
12700 "pll in on but not on in use in sw tracking\n");
12701 I915_STATE_WARN(pll->on != active,
12702 "pll on state mismatch (expected %i, found %i)\n",
12703 pll->on, active);
12704
12705 for_each_intel_crtc(dev, crtc) {
12706 if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
12707 enabled_crtcs++;
12708 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
12709 active_crtcs++;
12710 }
12711 I915_STATE_WARN(pll->active != active_crtcs,
12712 "pll active crtcs mismatch (expected %i, found %i)\n",
12713 pll->active, active_crtcs);
12714 I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
12715 "pll enabled crtcs mismatch (expected %i, found %i)\n",
12716 hweight32(pll->config.crtc_mask), enabled_crtcs);
12717
12718 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
12719 sizeof(dpll_hw_state)),
12720 "pll hw state mismatch\n");
12721 }
12722 }
12723
12724 static void
12725 intel_modeset_check_state(struct drm_device *dev,
12726 struct drm_atomic_state *old_state)
12727 {
12728 check_wm_state(dev);
12729 check_connector_state(dev, old_state);
12730 check_encoder_state(dev);
12731 check_crtc_state(dev, old_state);
12732 check_shared_dpll_state(dev);
12733 }
12734
12735 void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
12736 int dotclock)
12737 {
12738 /*
12739 * FDI already provided one idea for the dotclock.
12740 * Yell if the encoder disagrees.
12741 */
12742 WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
12743 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
12744 pipe_config->base.adjusted_mode.crtc_clock, dotclock);
12745 }
12746
12747 static void update_scanline_offset(struct intel_crtc *crtc)
12748 {
12749 struct drm_device *dev = crtc->base.dev;
12750
12751 /*
12752 * The scanline counter increments at the leading edge of hsync.
12753 *
12754 * On most platforms it starts counting from vtotal-1 on the
12755 * first active line. That means the scanline counter value is
12756 * always one less than what we would expect. Ie. just after
12757 * start of vblank, which also occurs at start of hsync (on the
12758 * last active line), the scanline counter will read vblank_start-1.
12759 *
12760 * On gen2 the scanline counter starts counting from 1 instead
12761 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
12762 * to keep the value positive), instead of adding one.
12763 *
12764 * On HSW+ the behaviour of the scanline counter depends on the output
12765 * type. For DP ports it behaves like most other platforms, but on HDMI
12766 * there's an extra 1 line difference. So we need to add two instead of
12767 * one to the value.
12768 */
12769 if (IS_GEN2(dev)) {
12770 const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode;
12771 int vtotal;
12772
12773 vtotal = mode->crtc_vtotal;
12774 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
12775 vtotal /= 2;
12776
12777 crtc->scanline_offset = vtotal - 1;
12778 } else if (HAS_DDI(dev) &&
12779 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
12780 crtc->scanline_offset = 2;
12781 } else
12782 crtc->scanline_offset = 1;
12783 }
12784
12785 static void intel_modeset_clear_plls(struct drm_atomic_state *state)
12786 {
12787 struct drm_device *dev = state->dev;
12788 struct drm_i915_private *dev_priv = to_i915(dev);
12789 struct intel_shared_dpll_config *shared_dpll = NULL;
12790 struct intel_crtc *intel_crtc;
12791 struct intel_crtc_state *intel_crtc_state;
12792 struct drm_crtc *crtc;
12793 struct drm_crtc_state *crtc_state;
12794 int i;
12795
12796 if (!dev_priv->display.crtc_compute_clock)
12797 return;
12798
12799 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12800 int dpll;
12801
12802 intel_crtc = to_intel_crtc(crtc);
12803 intel_crtc_state = to_intel_crtc_state(crtc_state);
12804 dpll = intel_crtc_state->shared_dpll;
12805
12806 if (!needs_modeset(crtc_state) || dpll == DPLL_ID_PRIVATE)
12807 continue;
12808
12809 intel_crtc_state->shared_dpll = DPLL_ID_PRIVATE;
12810
12811 if (!shared_dpll)
12812 shared_dpll = intel_atomic_get_shared_dpll_state(state);
12813
12814 shared_dpll[dpll].crtc_mask &= ~(1 << intel_crtc->pipe);
12815 }
12816 }
12817
12818 /*
12819 * This implements the workaround described in the "notes" section of the mode
12820 * set sequence documentation. When going from no pipes or single pipe to
12821 * multiple pipes, and planes are enabled after the pipe, we need to wait at
12822 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
12823 */
12824 static int haswell_mode_set_planes_workaround(struct drm_atomic_state *state)
12825 {
12826 struct drm_crtc_state *crtc_state;
12827 struct intel_crtc *intel_crtc;
12828 struct drm_crtc *crtc;
12829 struct intel_crtc_state *first_crtc_state = NULL;
12830 struct intel_crtc_state *other_crtc_state = NULL;
12831 enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
12832 int i;
12833
12834 /* look at all crtc's that are going to be enabled in during modeset */
12835 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12836 intel_crtc = to_intel_crtc(crtc);
12837
12838 if (!crtc_state->active || !needs_modeset(crtc_state))
12839 continue;
12840
12841 if (first_crtc_state) {
12842 other_crtc_state = to_intel_crtc_state(crtc_state);
12843 break;
12844 } else {
12845 first_crtc_state = to_intel_crtc_state(crtc_state);
12846 first_pipe = intel_crtc->pipe;
12847 }
12848 }
12849
12850 /* No workaround needed? */
12851 if (!first_crtc_state)
12852 return 0;
12853
12854 /* w/a possibly needed, check how many crtc's are already enabled. */
12855 for_each_intel_crtc(state->dev, intel_crtc) {
12856 struct intel_crtc_state *pipe_config;
12857
12858 pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
12859 if (IS_ERR(pipe_config))
12860 return PTR_ERR(pipe_config);
12861
12862 pipe_config->hsw_workaround_pipe = INVALID_PIPE;
12863
12864 if (!pipe_config->base.active ||
12865 needs_modeset(&pipe_config->base))
12866 continue;
12867
12868 /* 2 or more enabled crtcs means no need for w/a */
12869 if (enabled_pipe != INVALID_PIPE)
12870 return 0;
12871
12872 enabled_pipe = intel_crtc->pipe;
12873 }
12874
12875 if (enabled_pipe != INVALID_PIPE)
12876 first_crtc_state->hsw_workaround_pipe = enabled_pipe;
12877 else if (other_crtc_state)
12878 other_crtc_state->hsw_workaround_pipe = first_pipe;
12879
12880 return 0;
12881 }
12882
12883 static int intel_modeset_all_pipes(struct drm_atomic_state *state)
12884 {
12885 struct drm_crtc *crtc;
12886 struct drm_crtc_state *crtc_state;
12887 int ret = 0;
12888
12889 /* add all active pipes to the state */
12890 for_each_crtc(state->dev, crtc) {
12891 crtc_state = drm_atomic_get_crtc_state(state, crtc);
12892 if (IS_ERR(crtc_state))
12893 return PTR_ERR(crtc_state);
12894
12895 if (!crtc_state->active || needs_modeset(crtc_state))
12896 continue;
12897
12898 crtc_state->mode_changed = true;
12899
12900 ret = drm_atomic_add_affected_connectors(state, crtc);
12901 if (ret)
12902 break;
12903
12904 ret = drm_atomic_add_affected_planes(state, crtc);
12905 if (ret)
12906 break;
12907 }
12908
12909 return ret;
12910 }
12911
12912
12913 static int intel_modeset_checks(struct drm_atomic_state *state)
12914 {
12915 struct drm_device *dev = state->dev;
12916 struct drm_i915_private *dev_priv = dev->dev_private;
12917 int ret;
12918
12919 if (!check_digital_port_conflicts(state)) {
12920 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
12921 return -EINVAL;
12922 }
12923
12924 /*
12925 * See if the config requires any additional preparation, e.g.
12926 * to adjust global state with pipes off. We need to do this
12927 * here so we can get the modeset_pipe updated config for the new
12928 * mode set on this crtc. For other crtcs we need to use the
12929 * adjusted_mode bits in the crtc directly.
12930 */
12931 if (dev_priv->display.modeset_calc_cdclk) {
12932 unsigned int cdclk;
12933
12934 ret = dev_priv->display.modeset_calc_cdclk(state);
12935
12936 cdclk = to_intel_atomic_state(state)->cdclk;
12937 if (!ret && cdclk != dev_priv->cdclk_freq)
12938 ret = intel_modeset_all_pipes(state);
12939
12940 if (ret < 0)
12941 return ret;
12942 } else
12943 to_intel_atomic_state(state)->cdclk = dev_priv->cdclk_freq;
12944
12945 intel_modeset_clear_plls(state);
12946
12947 if (IS_HASWELL(dev))
12948 return haswell_mode_set_planes_workaround(state);
12949
12950 return 0;
12951 }
12952
12953 /**
12954 * intel_atomic_check - validate state object
12955 * @dev: drm device
12956 * @state: state to validate
12957 */
12958 static int intel_atomic_check(struct drm_device *dev,
12959 struct drm_atomic_state *state)
12960 {
12961 struct drm_crtc *crtc;
12962 struct drm_crtc_state *crtc_state;
12963 int ret, i;
12964 bool any_ms = false;
12965
12966 ret = drm_atomic_helper_check_modeset(dev, state);
12967 if (ret)
12968 return ret;
12969
12970 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12971 struct intel_crtc_state *pipe_config =
12972 to_intel_crtc_state(crtc_state);
12973
12974 /* Catch I915_MODE_FLAG_INHERITED */
12975 if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
12976 crtc_state->mode_changed = true;
12977
12978 if (!crtc_state->enable) {
12979 if (needs_modeset(crtc_state))
12980 any_ms = true;
12981 continue;
12982 }
12983
12984 if (!needs_modeset(crtc_state))
12985 continue;
12986
12987 /* FIXME: For only active_changed we shouldn't need to do any
12988 * state recomputation at all. */
12989
12990 ret = drm_atomic_add_affected_connectors(state, crtc);
12991 if (ret)
12992 return ret;
12993
12994 ret = intel_modeset_pipe_config(crtc, pipe_config);
12995 if (ret)
12996 return ret;
12997
12998 if (i915.fastboot &&
12999 intel_pipe_config_compare(state->dev,
13000 to_intel_crtc_state(crtc->state),
13001 pipe_config, true)) {
13002 crtc_state->mode_changed = false;
13003 }
13004
13005 if (needs_modeset(crtc_state)) {
13006 any_ms = true;
13007
13008 ret = drm_atomic_add_affected_planes(state, crtc);
13009 if (ret)
13010 return ret;
13011 }
13012
13013 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
13014 needs_modeset(crtc_state) ?
13015 "[modeset]" : "[fastset]");
13016 }
13017
13018 if (any_ms) {
13019 ret = intel_modeset_checks(state);
13020
13021 if (ret)
13022 return ret;
13023 } else
13024 to_intel_atomic_state(state)->cdclk =
13025 to_i915(state->dev)->cdclk_freq;
13026
13027 return drm_atomic_helper_check_planes(state->dev, state);
13028 }
13029
13030 /**
13031 * intel_atomic_commit - commit validated state object
13032 * @dev: DRM device
13033 * @state: the top-level driver state object
13034 * @async: asynchronous commit
13035 *
13036 * This function commits a top-level state object that has been validated
13037 * with drm_atomic_helper_check().
13038 *
13039 * FIXME: Atomic modeset support for i915 is not yet complete. At the moment
13040 * we can only handle plane-related operations and do not yet support
13041 * asynchronous commit.
13042 *
13043 * RETURNS
13044 * Zero for success or -errno.
13045 */
13046 static int intel_atomic_commit(struct drm_device *dev,
13047 struct drm_atomic_state *state,
13048 bool async)
13049 {
13050 struct drm_i915_private *dev_priv = dev->dev_private;
13051 struct drm_crtc *crtc;
13052 struct drm_crtc_state *crtc_state;
13053 int ret = 0;
13054 int i;
13055 bool any_ms = false;
13056
13057 if (async) {
13058 DRM_DEBUG_KMS("i915 does not yet support async commit\n");
13059 return -EINVAL;
13060 }
13061
13062 ret = drm_atomic_helper_prepare_planes(dev, state);
13063 if (ret)
13064 return ret;
13065
13066 drm_atomic_helper_swap_state(dev, state);
13067
13068 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13069 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13070
13071 if (!needs_modeset(crtc->state))
13072 continue;
13073
13074 any_ms = true;
13075 intel_pre_plane_update(intel_crtc);
13076
13077 if (crtc_state->active) {
13078 intel_crtc_disable_planes(crtc, crtc_state->plane_mask);
13079 dev_priv->display.crtc_disable(crtc);
13080 intel_crtc->active = false;
13081 intel_disable_shared_dpll(intel_crtc);
13082 }
13083 }
13084
13085 /* Only after disabling all output pipelines that will be changed can we
13086 * update the the output configuration. */
13087 intel_modeset_update_crtc_state(state);
13088
13089 if (any_ms) {
13090 intel_shared_dpll_commit(state);
13091
13092 drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
13093 modeset_update_crtc_power_domains(state);
13094 }
13095
13096 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
13097 for_each_crtc_in_state(state, crtc, crtc_state, i) {
13098 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13099 bool modeset = needs_modeset(crtc->state);
13100
13101 if (modeset && crtc->state->active) {
13102 update_scanline_offset(to_intel_crtc(crtc));
13103 dev_priv->display.crtc_enable(crtc);
13104 }
13105
13106 if (!modeset)
13107 intel_pre_plane_update(intel_crtc);
13108
13109 drm_atomic_helper_commit_planes_on_crtc(crtc_state);
13110 intel_post_plane_update(intel_crtc);
13111 }
13112
13113 /* FIXME: add subpixel order */
13114
13115 drm_atomic_helper_wait_for_vblanks(dev, state);
13116 drm_atomic_helper_cleanup_planes(dev, state);
13117
13118 if (any_ms)
13119 intel_modeset_check_state(dev, state);
13120
13121 drm_atomic_state_free(state);
13122
13123 return 0;
13124 }
13125
13126 void intel_crtc_restore_mode(struct drm_crtc *crtc)
13127 {
13128 struct drm_device *dev = crtc->dev;
13129 struct drm_atomic_state *state;
13130 struct drm_crtc_state *crtc_state;
13131 int ret;
13132
13133 state = drm_atomic_state_alloc(dev);
13134 if (!state) {
13135 DRM_DEBUG_KMS("[CRTC:%d] crtc restore failed, out of memory",
13136 crtc->base.id);
13137 return;
13138 }
13139
13140 state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
13141
13142 retry:
13143 crtc_state = drm_atomic_get_crtc_state(state, crtc);
13144 ret = PTR_ERR_OR_ZERO(crtc_state);
13145 if (!ret) {
13146 if (!crtc_state->active)
13147 goto out;
13148
13149 crtc_state->mode_changed = true;
13150 ret = drm_atomic_commit(state);
13151 }
13152
13153 if (ret == -EDEADLK) {
13154 drm_atomic_state_clear(state);
13155 drm_modeset_backoff(state->acquire_ctx);
13156 goto retry;
13157 }
13158
13159 if (ret)
13160 out:
13161 drm_atomic_state_free(state);
13162 }
13163
13164 #undef for_each_intel_crtc_masked
13165
13166 static const struct drm_crtc_funcs intel_crtc_funcs = {
13167 .gamma_set = intel_crtc_gamma_set,
13168 .set_config = drm_atomic_helper_set_config,
13169 .destroy = intel_crtc_destroy,
13170 .page_flip = intel_crtc_page_flip,
13171 .atomic_duplicate_state = intel_crtc_duplicate_state,
13172 .atomic_destroy_state = intel_crtc_destroy_state,
13173 };
13174
13175 static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
13176 struct intel_shared_dpll *pll,
13177 struct intel_dpll_hw_state *hw_state)
13178 {
13179 uint32_t val;
13180
13181 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
13182 return false;
13183
13184 val = I915_READ(PCH_DPLL(pll->id));
13185 hw_state->dpll = val;
13186 hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
13187 hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
13188
13189 return val & DPLL_VCO_ENABLE;
13190 }
13191
13192 static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
13193 struct intel_shared_dpll *pll)
13194 {
13195 I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
13196 I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
13197 }
13198
13199 static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
13200 struct intel_shared_dpll *pll)
13201 {
13202 /* PCH refclock must be enabled first */
13203 ibx_assert_pch_refclk_enabled(dev_priv);
13204
13205 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13206
13207 /* Wait for the clocks to stabilize. */
13208 POSTING_READ(PCH_DPLL(pll->id));
13209 udelay(150);
13210
13211 /* The pixel multiplier can only be updated once the
13212 * DPLL is enabled and the clocks are stable.
13213 *
13214 * So write it again.
13215 */
13216 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
13217 POSTING_READ(PCH_DPLL(pll->id));
13218 udelay(200);
13219 }
13220
13221 static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
13222 struct intel_shared_dpll *pll)
13223 {
13224 struct drm_device *dev = dev_priv->dev;
13225 struct intel_crtc *crtc;
13226
13227 /* Make sure no transcoder isn't still depending on us. */
13228 for_each_intel_crtc(dev, crtc) {
13229 if (intel_crtc_to_shared_dpll(crtc) == pll)
13230 assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
13231 }
13232
13233 I915_WRITE(PCH_DPLL(pll->id), 0);
13234 POSTING_READ(PCH_DPLL(pll->id));
13235 udelay(200);
13236 }
13237
13238 static char *ibx_pch_dpll_names[] = {
13239 "PCH DPLL A",
13240 "PCH DPLL B",
13241 };
13242
13243 static void ibx_pch_dpll_init(struct drm_device *dev)
13244 {
13245 struct drm_i915_private *dev_priv = dev->dev_private;
13246 int i;
13247
13248 dev_priv->num_shared_dpll = 2;
13249
13250 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
13251 dev_priv->shared_dplls[i].id = i;
13252 dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
13253 dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
13254 dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
13255 dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
13256 dev_priv->shared_dplls[i].get_hw_state =
13257 ibx_pch_dpll_get_hw_state;
13258 }
13259 }
13260
13261 static void intel_shared_dpll_init(struct drm_device *dev)
13262 {
13263 struct drm_i915_private *dev_priv = dev->dev_private;
13264
13265 intel_update_cdclk(dev);
13266
13267 if (HAS_DDI(dev))
13268 intel_ddi_pll_init(dev);
13269 else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
13270 ibx_pch_dpll_init(dev);
13271 else
13272 dev_priv->num_shared_dpll = 0;
13273
13274 BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
13275 }
13276
13277 /**
13278 * intel_prepare_plane_fb - Prepare fb for usage on plane
13279 * @plane: drm plane to prepare for
13280 * @fb: framebuffer to prepare for presentation
13281 *
13282 * Prepares a framebuffer for usage on a display plane. Generally this
13283 * involves pinning the underlying object and updating the frontbuffer tracking
13284 * bits. Some older platforms need special physical address handling for
13285 * cursor planes.
13286 *
13287 * Returns 0 on success, negative error code on failure.
13288 */
13289 int
13290 intel_prepare_plane_fb(struct drm_plane *plane,
13291 struct drm_framebuffer *fb,
13292 const struct drm_plane_state *new_state)
13293 {
13294 struct drm_device *dev = plane->dev;
13295 struct intel_plane *intel_plane = to_intel_plane(plane);
13296 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13297 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
13298 int ret = 0;
13299
13300 if (!obj)
13301 return 0;
13302
13303 mutex_lock(&dev->struct_mutex);
13304
13305 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
13306 INTEL_INFO(dev)->cursor_needs_physical) {
13307 int align = IS_I830(dev) ? 16 * 1024 : 256;
13308 ret = i915_gem_object_attach_phys(obj, align);
13309 if (ret)
13310 DRM_DEBUG_KMS("failed to attach phys object\n");
13311 } else {
13312 ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL, NULL);
13313 }
13314
13315 if (ret == 0)
13316 i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
13317
13318 mutex_unlock(&dev->struct_mutex);
13319
13320 return ret;
13321 }
13322
13323 /**
13324 * intel_cleanup_plane_fb - Cleans up an fb after plane use
13325 * @plane: drm plane to clean up for
13326 * @fb: old framebuffer that was on plane
13327 *
13328 * Cleans up a framebuffer that has just been removed from a plane.
13329 */
13330 void
13331 intel_cleanup_plane_fb(struct drm_plane *plane,
13332 struct drm_framebuffer *fb,
13333 const struct drm_plane_state *old_state)
13334 {
13335 struct drm_device *dev = plane->dev;
13336 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13337
13338 if (WARN_ON(!obj))
13339 return;
13340
13341 if (plane->type != DRM_PLANE_TYPE_CURSOR ||
13342 !INTEL_INFO(dev)->cursor_needs_physical) {
13343 mutex_lock(&dev->struct_mutex);
13344 intel_unpin_fb_obj(fb, old_state);
13345 mutex_unlock(&dev->struct_mutex);
13346 }
13347 }
13348
13349 int
13350 skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
13351 {
13352 int max_scale;
13353 struct drm_device *dev;
13354 struct drm_i915_private *dev_priv;
13355 int crtc_clock, cdclk;
13356
13357 if (!intel_crtc || !crtc_state)
13358 return DRM_PLANE_HELPER_NO_SCALING;
13359
13360 dev = intel_crtc->base.dev;
13361 dev_priv = dev->dev_private;
13362 crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
13363 cdclk = to_intel_atomic_state(crtc_state->base.state)->cdclk;
13364
13365 if (!crtc_clock || !cdclk)
13366 return DRM_PLANE_HELPER_NO_SCALING;
13367
13368 /*
13369 * skl max scale is lower of:
13370 * close to 3 but not 3, -1 is for that purpose
13371 * or
13372 * cdclk/crtc_clock
13373 */
13374 max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
13375
13376 return max_scale;
13377 }
13378
13379 static int
13380 intel_check_primary_plane(struct drm_plane *plane,
13381 struct intel_crtc_state *crtc_state,
13382 struct intel_plane_state *state)
13383 {
13384 struct drm_crtc *crtc = state->base.crtc;
13385 struct drm_framebuffer *fb = state->base.fb;
13386 int min_scale = DRM_PLANE_HELPER_NO_SCALING;
13387 int max_scale = DRM_PLANE_HELPER_NO_SCALING;
13388 bool can_position = false;
13389
13390 /* use scaler when colorkey is not required */
13391 if (INTEL_INFO(plane->dev)->gen >= 9 &&
13392 state->ckey.flags == I915_SET_COLORKEY_NONE) {
13393 min_scale = 1;
13394 max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
13395 can_position = true;
13396 }
13397
13398 return drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13399 &state->dst, &state->clip,
13400 min_scale, max_scale,
13401 can_position, true,
13402 &state->visible);
13403 }
13404
13405 static void
13406 intel_commit_primary_plane(struct drm_plane *plane,
13407 struct intel_plane_state *state)
13408 {
13409 struct drm_crtc *crtc = state->base.crtc;
13410 struct drm_framebuffer *fb = state->base.fb;
13411 struct drm_device *dev = plane->dev;
13412 struct drm_i915_private *dev_priv = dev->dev_private;
13413 struct intel_crtc *intel_crtc;
13414 struct drm_rect *src = &state->src;
13415
13416 crtc = crtc ? crtc : plane->crtc;
13417 intel_crtc = to_intel_crtc(crtc);
13418
13419 plane->fb = fb;
13420 crtc->x = src->x1 >> 16;
13421 crtc->y = src->y1 >> 16;
13422
13423 if (!crtc->state->active)
13424 return;
13425
13426 if (state->visible)
13427 /* FIXME: kill this fastboot hack */
13428 intel_update_pipe_size(intel_crtc);
13429
13430 dev_priv->display.update_primary_plane(crtc, fb,
13431 state->src.x1 >> 16,
13432 state->src.y1 >> 16);
13433 }
13434
13435 static void
13436 intel_disable_primary_plane(struct drm_plane *plane,
13437 struct drm_crtc *crtc)
13438 {
13439 struct drm_device *dev = plane->dev;
13440 struct drm_i915_private *dev_priv = dev->dev_private;
13441
13442 dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
13443 }
13444
13445 static void intel_begin_crtc_commit(struct drm_crtc *crtc,
13446 struct drm_crtc_state *old_crtc_state)
13447 {
13448 struct drm_device *dev = crtc->dev;
13449 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13450
13451 if (intel_crtc->atomic.update_wm_pre)
13452 intel_update_watermarks(crtc);
13453
13454 /* Perform vblank evasion around commit operation */
13455 if (crtc->state->active)
13456 intel_pipe_update_start(intel_crtc);
13457
13458 if (!needs_modeset(crtc->state) && INTEL_INFO(dev)->gen >= 9)
13459 skl_detach_scalers(intel_crtc);
13460 }
13461
13462 static void intel_finish_crtc_commit(struct drm_crtc *crtc,
13463 struct drm_crtc_state *old_crtc_state)
13464 {
13465 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13466
13467 if (crtc->state->active)
13468 intel_pipe_update_end(intel_crtc);
13469 }
13470
13471 /**
13472 * intel_plane_destroy - destroy a plane
13473 * @plane: plane to destroy
13474 *
13475 * Common destruction function for all types of planes (primary, cursor,
13476 * sprite).
13477 */
13478 void intel_plane_destroy(struct drm_plane *plane)
13479 {
13480 struct intel_plane *intel_plane = to_intel_plane(plane);
13481 drm_plane_cleanup(plane);
13482 kfree(intel_plane);
13483 }
13484
13485 const struct drm_plane_funcs intel_plane_funcs = {
13486 .update_plane = drm_atomic_helper_update_plane,
13487 .disable_plane = drm_atomic_helper_disable_plane,
13488 .destroy = intel_plane_destroy,
13489 .set_property = drm_atomic_helper_plane_set_property,
13490 .atomic_get_property = intel_plane_atomic_get_property,
13491 .atomic_set_property = intel_plane_atomic_set_property,
13492 .atomic_duplicate_state = intel_plane_duplicate_state,
13493 .atomic_destroy_state = intel_plane_destroy_state,
13494
13495 };
13496
13497 static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
13498 int pipe)
13499 {
13500 struct intel_plane *primary;
13501 struct intel_plane_state *state;
13502 const uint32_t *intel_primary_formats;
13503 unsigned int num_formats;
13504
13505 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
13506 if (primary == NULL)
13507 return NULL;
13508
13509 state = intel_create_plane_state(&primary->base);
13510 if (!state) {
13511 kfree(primary);
13512 return NULL;
13513 }
13514 primary->base.state = &state->base;
13515
13516 primary->can_scale = false;
13517 primary->max_downscale = 1;
13518 if (INTEL_INFO(dev)->gen >= 9) {
13519 primary->can_scale = true;
13520 state->scaler_id = -1;
13521 }
13522 primary->pipe = pipe;
13523 primary->plane = pipe;
13524 primary->frontbuffer_bit = INTEL_FRONTBUFFER_PRIMARY(pipe);
13525 primary->check_plane = intel_check_primary_plane;
13526 primary->commit_plane = intel_commit_primary_plane;
13527 primary->disable_plane = intel_disable_primary_plane;
13528 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
13529 primary->plane = !pipe;
13530
13531 if (INTEL_INFO(dev)->gen >= 9) {
13532 intel_primary_formats = skl_primary_formats;
13533 num_formats = ARRAY_SIZE(skl_primary_formats);
13534 } else if (INTEL_INFO(dev)->gen >= 4) {
13535 intel_primary_formats = i965_primary_formats;
13536 num_formats = ARRAY_SIZE(i965_primary_formats);
13537 } else {
13538 intel_primary_formats = i8xx_primary_formats;
13539 num_formats = ARRAY_SIZE(i8xx_primary_formats);
13540 }
13541
13542 drm_universal_plane_init(dev, &primary->base, 0,
13543 &intel_plane_funcs,
13544 intel_primary_formats, num_formats,
13545 DRM_PLANE_TYPE_PRIMARY);
13546
13547 if (INTEL_INFO(dev)->gen >= 4)
13548 intel_create_rotation_property(dev, primary);
13549
13550 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
13551
13552 return &primary->base;
13553 }
13554
13555 void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
13556 {
13557 if (!dev->mode_config.rotation_property) {
13558 unsigned long flags = BIT(DRM_ROTATE_0) |
13559 BIT(DRM_ROTATE_180);
13560
13561 if (INTEL_INFO(dev)->gen >= 9)
13562 flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
13563
13564 dev->mode_config.rotation_property =
13565 drm_mode_create_rotation_property(dev, flags);
13566 }
13567 if (dev->mode_config.rotation_property)
13568 drm_object_attach_property(&plane->base.base,
13569 dev->mode_config.rotation_property,
13570 plane->base.state->rotation);
13571 }
13572
13573 static int
13574 intel_check_cursor_plane(struct drm_plane *plane,
13575 struct intel_crtc_state *crtc_state,
13576 struct intel_plane_state *state)
13577 {
13578 struct drm_crtc *crtc = crtc_state->base.crtc;
13579 struct drm_framebuffer *fb = state->base.fb;
13580 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
13581 unsigned stride;
13582 int ret;
13583
13584 ret = drm_plane_helper_check_update(plane, crtc, fb, &state->src,
13585 &state->dst, &state->clip,
13586 DRM_PLANE_HELPER_NO_SCALING,
13587 DRM_PLANE_HELPER_NO_SCALING,
13588 true, true, &state->visible);
13589 if (ret)
13590 return ret;
13591
13592 /* if we want to turn off the cursor ignore width and height */
13593 if (!obj)
13594 return 0;
13595
13596 /* Check for which cursor types we support */
13597 if (!cursor_size_ok(plane->dev, state->base.crtc_w, state->base.crtc_h)) {
13598 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
13599 state->base.crtc_w, state->base.crtc_h);
13600 return -EINVAL;
13601 }
13602
13603 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
13604 if (obj->base.size < stride * state->base.crtc_h) {
13605 DRM_DEBUG_KMS("buffer is too small\n");
13606 return -ENOMEM;
13607 }
13608
13609 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
13610 DRM_DEBUG_KMS("cursor cannot be tiled\n");
13611 return -EINVAL;
13612 }
13613
13614 return 0;
13615 }
13616
13617 static void
13618 intel_disable_cursor_plane(struct drm_plane *plane,
13619 struct drm_crtc *crtc)
13620 {
13621 intel_crtc_update_cursor(crtc, false);
13622 }
13623
13624 static void
13625 intel_commit_cursor_plane(struct drm_plane *plane,
13626 struct intel_plane_state *state)
13627 {
13628 struct drm_crtc *crtc = state->base.crtc;
13629 struct drm_device *dev = plane->dev;
13630 struct intel_crtc *intel_crtc;
13631 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
13632 uint32_t addr;
13633
13634 crtc = crtc ? crtc : plane->crtc;
13635 intel_crtc = to_intel_crtc(crtc);
13636
13637 plane->fb = state->base.fb;
13638 crtc->cursor_x = state->base.crtc_x;
13639 crtc->cursor_y = state->base.crtc_y;
13640
13641 if (intel_crtc->cursor_bo == obj)
13642 goto update;
13643
13644 if (!obj)
13645 addr = 0;
13646 else if (!INTEL_INFO(dev)->cursor_needs_physical)
13647 addr = i915_gem_obj_ggtt_offset(obj);
13648 else
13649 addr = obj->phys_handle->busaddr;
13650
13651 intel_crtc->cursor_addr = addr;
13652 intel_crtc->cursor_bo = obj;
13653
13654 update:
13655 if (crtc->state->active)
13656 intel_crtc_update_cursor(crtc, state->visible);
13657 }
13658
13659 static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
13660 int pipe)
13661 {
13662 struct intel_plane *cursor;
13663 struct intel_plane_state *state;
13664
13665 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
13666 if (cursor == NULL)
13667 return NULL;
13668
13669 state = intel_create_plane_state(&cursor->base);
13670 if (!state) {
13671 kfree(cursor);
13672 return NULL;
13673 }
13674 cursor->base.state = &state->base;
13675
13676 cursor->can_scale = false;
13677 cursor->max_downscale = 1;
13678 cursor->pipe = pipe;
13679 cursor->plane = pipe;
13680 cursor->frontbuffer_bit = INTEL_FRONTBUFFER_CURSOR(pipe);
13681 cursor->check_plane = intel_check_cursor_plane;
13682 cursor->commit_plane = intel_commit_cursor_plane;
13683 cursor->disable_plane = intel_disable_cursor_plane;
13684
13685 drm_universal_plane_init(dev, &cursor->base, 0,
13686 &intel_plane_funcs,
13687 intel_cursor_formats,
13688 ARRAY_SIZE(intel_cursor_formats),
13689 DRM_PLANE_TYPE_CURSOR);
13690
13691 if (INTEL_INFO(dev)->gen >= 4) {
13692 if (!dev->mode_config.rotation_property)
13693 dev->mode_config.rotation_property =
13694 drm_mode_create_rotation_property(dev,
13695 BIT(DRM_ROTATE_0) |
13696 BIT(DRM_ROTATE_180));
13697 if (dev->mode_config.rotation_property)
13698 drm_object_attach_property(&cursor->base.base,
13699 dev->mode_config.rotation_property,
13700 state->base.rotation);
13701 }
13702
13703 if (INTEL_INFO(dev)->gen >=9)
13704 state->scaler_id = -1;
13705
13706 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
13707
13708 return &cursor->base;
13709 }
13710
13711 static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
13712 struct intel_crtc_state *crtc_state)
13713 {
13714 int i;
13715 struct intel_scaler *intel_scaler;
13716 struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
13717
13718 for (i = 0; i < intel_crtc->num_scalers; i++) {
13719 intel_scaler = &scaler_state->scalers[i];
13720 intel_scaler->in_use = 0;
13721 intel_scaler->mode = PS_SCALER_MODE_DYN;
13722 }
13723
13724 scaler_state->scaler_id = -1;
13725 }
13726
13727 static void intel_crtc_init(struct drm_device *dev, int pipe)
13728 {
13729 struct drm_i915_private *dev_priv = dev->dev_private;
13730 struct intel_crtc *intel_crtc;
13731 struct intel_crtc_state *crtc_state = NULL;
13732 struct drm_plane *primary = NULL;
13733 struct drm_plane *cursor = NULL;
13734 int i, ret;
13735
13736 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
13737 if (intel_crtc == NULL)
13738 return;
13739
13740 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
13741 if (!crtc_state)
13742 goto fail;
13743 intel_crtc->config = crtc_state;
13744 intel_crtc->base.state = &crtc_state->base;
13745 crtc_state->base.crtc = &intel_crtc->base;
13746
13747 /* initialize shared scalers */
13748 if (INTEL_INFO(dev)->gen >= 9) {
13749 if (pipe == PIPE_C)
13750 intel_crtc->num_scalers = 1;
13751 else
13752 intel_crtc->num_scalers = SKL_NUM_SCALERS;
13753
13754 skl_init_scalers(dev, intel_crtc, crtc_state);
13755 }
13756
13757 primary = intel_primary_plane_create(dev, pipe);
13758 if (!primary)
13759 goto fail;
13760
13761 cursor = intel_cursor_plane_create(dev, pipe);
13762 if (!cursor)
13763 goto fail;
13764
13765 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
13766 cursor, &intel_crtc_funcs);
13767 if (ret)
13768 goto fail;
13769
13770 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
13771 for (i = 0; i < 256; i++) {
13772 intel_crtc->lut_r[i] = i;
13773 intel_crtc->lut_g[i] = i;
13774 intel_crtc->lut_b[i] = i;
13775 }
13776
13777 /*
13778 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
13779 * is hooked to pipe B. Hence we want plane A feeding pipe B.
13780 */
13781 intel_crtc->pipe = pipe;
13782 intel_crtc->plane = pipe;
13783 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
13784 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
13785 intel_crtc->plane = !pipe;
13786 }
13787
13788 intel_crtc->cursor_base = ~0;
13789 intel_crtc->cursor_cntl = ~0;
13790 intel_crtc->cursor_size = ~0;
13791
13792 intel_crtc->wm.cxsr_allowed = true;
13793
13794 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
13795 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
13796 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
13797 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
13798
13799 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
13800
13801 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
13802 return;
13803
13804 fail:
13805 if (primary)
13806 drm_plane_cleanup(primary);
13807 if (cursor)
13808 drm_plane_cleanup(cursor);
13809 kfree(crtc_state);
13810 kfree(intel_crtc);
13811 }
13812
13813 enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
13814 {
13815 struct drm_encoder *encoder = connector->base.encoder;
13816 struct drm_device *dev = connector->base.dev;
13817
13818 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
13819
13820 if (!encoder || WARN_ON(!encoder->crtc))
13821 return INVALID_PIPE;
13822
13823 return to_intel_crtc(encoder->crtc)->pipe;
13824 }
13825
13826 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
13827 struct drm_file *file)
13828 {
13829 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
13830 struct drm_crtc *drmmode_crtc;
13831 struct intel_crtc *crtc;
13832
13833 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
13834
13835 if (!drmmode_crtc) {
13836 DRM_ERROR("no such CRTC id\n");
13837 return -ENOENT;
13838 }
13839
13840 crtc = to_intel_crtc(drmmode_crtc);
13841 pipe_from_crtc_id->pipe = crtc->pipe;
13842
13843 return 0;
13844 }
13845
13846 static int intel_encoder_clones(struct intel_encoder *encoder)
13847 {
13848 struct drm_device *dev = encoder->base.dev;
13849 struct intel_encoder *source_encoder;
13850 int index_mask = 0;
13851 int entry = 0;
13852
13853 for_each_intel_encoder(dev, source_encoder) {
13854 if (encoders_cloneable(encoder, source_encoder))
13855 index_mask |= (1 << entry);
13856
13857 entry++;
13858 }
13859
13860 return index_mask;
13861 }
13862
13863 static bool has_edp_a(struct drm_device *dev)
13864 {
13865 struct drm_i915_private *dev_priv = dev->dev_private;
13866
13867 if (!IS_MOBILE(dev))
13868 return false;
13869
13870 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
13871 return false;
13872
13873 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
13874 return false;
13875
13876 return true;
13877 }
13878
13879 static bool intel_crt_present(struct drm_device *dev)
13880 {
13881 struct drm_i915_private *dev_priv = dev->dev_private;
13882
13883 if (INTEL_INFO(dev)->gen >= 9)
13884 return false;
13885
13886 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
13887 return false;
13888
13889 if (IS_CHERRYVIEW(dev))
13890 return false;
13891
13892 if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
13893 return false;
13894
13895 return true;
13896 }
13897
13898 static void intel_setup_outputs(struct drm_device *dev)
13899 {
13900 struct drm_i915_private *dev_priv = dev->dev_private;
13901 struct intel_encoder *encoder;
13902 bool dpd_is_edp = false;
13903
13904 intel_lvds_init(dev);
13905
13906 if (intel_crt_present(dev))
13907 intel_crt_init(dev);
13908
13909 if (IS_BROXTON(dev)) {
13910 /*
13911 * FIXME: Broxton doesn't support port detection via the
13912 * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
13913 * detect the ports.
13914 */
13915 intel_ddi_init(dev, PORT_A);
13916 intel_ddi_init(dev, PORT_B);
13917 intel_ddi_init(dev, PORT_C);
13918 } else if (HAS_DDI(dev)) {
13919 int found;
13920
13921 /*
13922 * Haswell uses DDI functions to detect digital outputs.
13923 * On SKL pre-D0 the strap isn't connected, so we assume
13924 * it's there.
13925 */
13926 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
13927 /* WaIgnoreDDIAStrap: skl */
13928 if (found || IS_SKYLAKE(dev))
13929 intel_ddi_init(dev, PORT_A);
13930
13931 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
13932 * register */
13933 found = I915_READ(SFUSE_STRAP);
13934
13935 if (found & SFUSE_STRAP_DDIB_DETECTED)
13936 intel_ddi_init(dev, PORT_B);
13937 if (found & SFUSE_STRAP_DDIC_DETECTED)
13938 intel_ddi_init(dev, PORT_C);
13939 if (found & SFUSE_STRAP_DDID_DETECTED)
13940 intel_ddi_init(dev, PORT_D);
13941 /*
13942 * On SKL we don't have a way to detect DDI-E so we rely on VBT.
13943 */
13944 if (IS_SKYLAKE(dev) &&
13945 (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
13946 dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
13947 dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
13948 intel_ddi_init(dev, PORT_E);
13949
13950 } else if (HAS_PCH_SPLIT(dev)) {
13951 int found;
13952 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
13953
13954 if (has_edp_a(dev))
13955 intel_dp_init(dev, DP_A, PORT_A);
13956
13957 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
13958 /* PCH SDVOB multiplex with HDMIB */
13959 found = intel_sdvo_init(dev, PCH_SDVOB, true);
13960 if (!found)
13961 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
13962 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
13963 intel_dp_init(dev, PCH_DP_B, PORT_B);
13964 }
13965
13966 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
13967 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
13968
13969 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
13970 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
13971
13972 if (I915_READ(PCH_DP_C) & DP_DETECTED)
13973 intel_dp_init(dev, PCH_DP_C, PORT_C);
13974
13975 if (I915_READ(PCH_DP_D) & DP_DETECTED)
13976 intel_dp_init(dev, PCH_DP_D, PORT_D);
13977 } else if (IS_VALLEYVIEW(dev)) {
13978 /*
13979 * The DP_DETECTED bit is the latched state of the DDC
13980 * SDA pin at boot. However since eDP doesn't require DDC
13981 * (no way to plug in a DP->HDMI dongle) the DDC pins for
13982 * eDP ports may have been muxed to an alternate function.
13983 * Thus we can't rely on the DP_DETECTED bit alone to detect
13984 * eDP ports. Consult the VBT as well as DP_DETECTED to
13985 * detect eDP ports.
13986 */
13987 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED &&
13988 !intel_dp_is_edp(dev, PORT_B))
13989 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
13990 PORT_B);
13991 if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED ||
13992 intel_dp_is_edp(dev, PORT_B))
13993 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B);
13994
13995 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED &&
13996 !intel_dp_is_edp(dev, PORT_C))
13997 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
13998 PORT_C);
13999 if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED ||
14000 intel_dp_is_edp(dev, PORT_C))
14001 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
14002
14003 if (IS_CHERRYVIEW(dev)) {
14004 if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED)
14005 intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID,
14006 PORT_D);
14007 /* eDP not supported on port D, so don't check VBT */
14008 if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED)
14009 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D);
14010 }
14011
14012 intel_dsi_init(dev);
14013 } else if (!IS_GEN2(dev) && !IS_PINEVIEW(dev)) {
14014 bool found = false;
14015
14016 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14017 DRM_DEBUG_KMS("probing SDVOB\n");
14018 found = intel_sdvo_init(dev, GEN3_SDVOB, true);
14019 if (!found && IS_G4X(dev)) {
14020 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
14021 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
14022 }
14023
14024 if (!found && IS_G4X(dev))
14025 intel_dp_init(dev, DP_B, PORT_B);
14026 }
14027
14028 /* Before G4X SDVOC doesn't have its own detect register */
14029
14030 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
14031 DRM_DEBUG_KMS("probing SDVOC\n");
14032 found = intel_sdvo_init(dev, GEN3_SDVOC, false);
14033 }
14034
14035 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
14036
14037 if (IS_G4X(dev)) {
14038 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
14039 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
14040 }
14041 if (IS_G4X(dev))
14042 intel_dp_init(dev, DP_C, PORT_C);
14043 }
14044
14045 if (IS_G4X(dev) &&
14046 (I915_READ(DP_D) & DP_DETECTED))
14047 intel_dp_init(dev, DP_D, PORT_D);
14048 } else if (IS_GEN2(dev))
14049 intel_dvo_init(dev);
14050
14051 if (SUPPORTS_TV(dev))
14052 intel_tv_init(dev);
14053
14054 intel_psr_init(dev);
14055
14056 for_each_intel_encoder(dev, encoder) {
14057 encoder->base.possible_crtcs = encoder->crtc_mask;
14058 encoder->base.possible_clones =
14059 intel_encoder_clones(encoder);
14060 }
14061
14062 intel_init_pch_refclk(dev);
14063
14064 drm_helper_move_panel_connectors_to_head(dev);
14065 }
14066
14067 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
14068 {
14069 struct drm_device *dev = fb->dev;
14070 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14071
14072 drm_framebuffer_cleanup(fb);
14073 mutex_lock(&dev->struct_mutex);
14074 WARN_ON(!intel_fb->obj->framebuffer_references--);
14075 drm_gem_object_unreference(&intel_fb->obj->base);
14076 mutex_unlock(&dev->struct_mutex);
14077 kfree(intel_fb);
14078 }
14079
14080 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
14081 struct drm_file *file,
14082 unsigned int *handle)
14083 {
14084 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14085 struct drm_i915_gem_object *obj = intel_fb->obj;
14086
14087 return drm_gem_handle_create(file, &obj->base, handle);
14088 }
14089
14090 static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
14091 struct drm_file *file,
14092 unsigned flags, unsigned color,
14093 struct drm_clip_rect *clips,
14094 unsigned num_clips)
14095 {
14096 struct drm_device *dev = fb->dev;
14097 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
14098 struct drm_i915_gem_object *obj = intel_fb->obj;
14099
14100 mutex_lock(&dev->struct_mutex);
14101 intel_fb_obj_flush(obj, false, ORIGIN_DIRTYFB);
14102 mutex_unlock(&dev->struct_mutex);
14103
14104 return 0;
14105 }
14106
14107 static const struct drm_framebuffer_funcs intel_fb_funcs = {
14108 .destroy = intel_user_framebuffer_destroy,
14109 .create_handle = intel_user_framebuffer_create_handle,
14110 .dirty = intel_user_framebuffer_dirty,
14111 };
14112
14113 static
14114 u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
14115 uint32_t pixel_format)
14116 {
14117 u32 gen = INTEL_INFO(dev)->gen;
14118
14119 if (gen >= 9) {
14120 /* "The stride in bytes must not exceed the of the size of 8K
14121 * pixels and 32K bytes."
14122 */
14123 return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
14124 } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
14125 return 32*1024;
14126 } else if (gen >= 4) {
14127 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14128 return 16*1024;
14129 else
14130 return 32*1024;
14131 } else if (gen >= 3) {
14132 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
14133 return 8*1024;
14134 else
14135 return 16*1024;
14136 } else {
14137 /* XXX DSPC is limited to 4k tiled */
14138 return 8*1024;
14139 }
14140 }
14141
14142 static int intel_framebuffer_init(struct drm_device *dev,
14143 struct intel_framebuffer *intel_fb,
14144 struct drm_mode_fb_cmd2 *mode_cmd,
14145 struct drm_i915_gem_object *obj)
14146 {
14147 unsigned int aligned_height;
14148 int ret;
14149 u32 pitch_limit, stride_alignment;
14150
14151 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
14152
14153 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
14154 /* Enforce that fb modifier and tiling mode match, but only for
14155 * X-tiled. This is needed for FBC. */
14156 if (!!(obj->tiling_mode == I915_TILING_X) !=
14157 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
14158 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
14159 return -EINVAL;
14160 }
14161 } else {
14162 if (obj->tiling_mode == I915_TILING_X)
14163 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
14164 else if (obj->tiling_mode == I915_TILING_Y) {
14165 DRM_DEBUG("No Y tiling for legacy addfb\n");
14166 return -EINVAL;
14167 }
14168 }
14169
14170 /* Passed in modifier sanity checking. */
14171 switch (mode_cmd->modifier[0]) {
14172 case I915_FORMAT_MOD_Y_TILED:
14173 case I915_FORMAT_MOD_Yf_TILED:
14174 if (INTEL_INFO(dev)->gen < 9) {
14175 DRM_DEBUG("Unsupported tiling 0x%llx!\n",
14176 mode_cmd->modifier[0]);
14177 return -EINVAL;
14178 }
14179 case DRM_FORMAT_MOD_NONE:
14180 case I915_FORMAT_MOD_X_TILED:
14181 break;
14182 default:
14183 DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
14184 mode_cmd->modifier[0]);
14185 return -EINVAL;
14186 }
14187
14188 stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
14189 mode_cmd->pixel_format);
14190 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
14191 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
14192 mode_cmd->pitches[0], stride_alignment);
14193 return -EINVAL;
14194 }
14195
14196 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
14197 mode_cmd->pixel_format);
14198 if (mode_cmd->pitches[0] > pitch_limit) {
14199 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
14200 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
14201 "tiled" : "linear",
14202 mode_cmd->pitches[0], pitch_limit);
14203 return -EINVAL;
14204 }
14205
14206 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
14207 mode_cmd->pitches[0] != obj->stride) {
14208 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
14209 mode_cmd->pitches[0], obj->stride);
14210 return -EINVAL;
14211 }
14212
14213 /* Reject formats not supported by any plane early. */
14214 switch (mode_cmd->pixel_format) {
14215 case DRM_FORMAT_C8:
14216 case DRM_FORMAT_RGB565:
14217 case DRM_FORMAT_XRGB8888:
14218 case DRM_FORMAT_ARGB8888:
14219 break;
14220 case DRM_FORMAT_XRGB1555:
14221 if (INTEL_INFO(dev)->gen > 3) {
14222 DRM_DEBUG("unsupported pixel format: %s\n",
14223 drm_get_format_name(mode_cmd->pixel_format));
14224 return -EINVAL;
14225 }
14226 break;
14227 case DRM_FORMAT_ABGR8888:
14228 if (!IS_VALLEYVIEW(dev) && INTEL_INFO(dev)->gen < 9) {
14229 DRM_DEBUG("unsupported pixel format: %s\n",
14230 drm_get_format_name(mode_cmd->pixel_format));
14231 return -EINVAL;
14232 }
14233 break;
14234 case DRM_FORMAT_XBGR8888:
14235 case DRM_FORMAT_XRGB2101010:
14236 case DRM_FORMAT_XBGR2101010:
14237 if (INTEL_INFO(dev)->gen < 4) {
14238 DRM_DEBUG("unsupported pixel format: %s\n",
14239 drm_get_format_name(mode_cmd->pixel_format));
14240 return -EINVAL;
14241 }
14242 break;
14243 case DRM_FORMAT_ABGR2101010:
14244 if (!IS_VALLEYVIEW(dev)) {
14245 DRM_DEBUG("unsupported pixel format: %s\n",
14246 drm_get_format_name(mode_cmd->pixel_format));
14247 return -EINVAL;
14248 }
14249 break;
14250 case DRM_FORMAT_YUYV:
14251 case DRM_FORMAT_UYVY:
14252 case DRM_FORMAT_YVYU:
14253 case DRM_FORMAT_VYUY:
14254 if (INTEL_INFO(dev)->gen < 5) {
14255 DRM_DEBUG("unsupported pixel format: %s\n",
14256 drm_get_format_name(mode_cmd->pixel_format));
14257 return -EINVAL;
14258 }
14259 break;
14260 default:
14261 DRM_DEBUG("unsupported pixel format: %s\n",
14262 drm_get_format_name(mode_cmd->pixel_format));
14263 return -EINVAL;
14264 }
14265
14266 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
14267 if (mode_cmd->offsets[0] != 0)
14268 return -EINVAL;
14269
14270 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
14271 mode_cmd->pixel_format,
14272 mode_cmd->modifier[0]);
14273 /* FIXME drm helper for size checks (especially planar formats)? */
14274 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
14275 return -EINVAL;
14276
14277 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
14278 intel_fb->obj = obj;
14279 intel_fb->obj->framebuffer_references++;
14280
14281 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
14282 if (ret) {
14283 DRM_ERROR("framebuffer init failed %d\n", ret);
14284 return ret;
14285 }
14286
14287 return 0;
14288 }
14289
14290 static struct drm_framebuffer *
14291 intel_user_framebuffer_create(struct drm_device *dev,
14292 struct drm_file *filp,
14293 struct drm_mode_fb_cmd2 *mode_cmd)
14294 {
14295 struct drm_i915_gem_object *obj;
14296
14297 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
14298 mode_cmd->handles[0]));
14299 if (&obj->base == NULL)
14300 return ERR_PTR(-ENOENT);
14301
14302 return intel_framebuffer_create(dev, mode_cmd, obj);
14303 }
14304
14305 #ifndef CONFIG_DRM_FBDEV_EMULATION
14306 static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
14307 {
14308 }
14309 #endif
14310
14311 static const struct drm_mode_config_funcs intel_mode_funcs = {
14312 .fb_create = intel_user_framebuffer_create,
14313 .output_poll_changed = intel_fbdev_output_poll_changed,
14314 .atomic_check = intel_atomic_check,
14315 .atomic_commit = intel_atomic_commit,
14316 .atomic_state_alloc = intel_atomic_state_alloc,
14317 .atomic_state_clear = intel_atomic_state_clear,
14318 };
14319
14320 /* Set up chip specific display functions */
14321 static void intel_init_display(struct drm_device *dev)
14322 {
14323 struct drm_i915_private *dev_priv = dev->dev_private;
14324
14325 if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
14326 dev_priv->display.find_dpll = g4x_find_best_dpll;
14327 else if (IS_CHERRYVIEW(dev))
14328 dev_priv->display.find_dpll = chv_find_best_dpll;
14329 else if (IS_VALLEYVIEW(dev))
14330 dev_priv->display.find_dpll = vlv_find_best_dpll;
14331 else if (IS_PINEVIEW(dev))
14332 dev_priv->display.find_dpll = pnv_find_best_dpll;
14333 else
14334 dev_priv->display.find_dpll = i9xx_find_best_dpll;
14335
14336 if (INTEL_INFO(dev)->gen >= 9) {
14337 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14338 dev_priv->display.get_initial_plane_config =
14339 skylake_get_initial_plane_config;
14340 dev_priv->display.crtc_compute_clock =
14341 haswell_crtc_compute_clock;
14342 dev_priv->display.crtc_enable = haswell_crtc_enable;
14343 dev_priv->display.crtc_disable = haswell_crtc_disable;
14344 dev_priv->display.update_primary_plane =
14345 skylake_update_primary_plane;
14346 } else if (HAS_DDI(dev)) {
14347 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
14348 dev_priv->display.get_initial_plane_config =
14349 ironlake_get_initial_plane_config;
14350 dev_priv->display.crtc_compute_clock =
14351 haswell_crtc_compute_clock;
14352 dev_priv->display.crtc_enable = haswell_crtc_enable;
14353 dev_priv->display.crtc_disable = haswell_crtc_disable;
14354 dev_priv->display.update_primary_plane =
14355 ironlake_update_primary_plane;
14356 } else if (HAS_PCH_SPLIT(dev)) {
14357 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
14358 dev_priv->display.get_initial_plane_config =
14359 ironlake_get_initial_plane_config;
14360 dev_priv->display.crtc_compute_clock =
14361 ironlake_crtc_compute_clock;
14362 dev_priv->display.crtc_enable = ironlake_crtc_enable;
14363 dev_priv->display.crtc_disable = ironlake_crtc_disable;
14364 dev_priv->display.update_primary_plane =
14365 ironlake_update_primary_plane;
14366 } else if (IS_VALLEYVIEW(dev)) {
14367 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14368 dev_priv->display.get_initial_plane_config =
14369 i9xx_get_initial_plane_config;
14370 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14371 dev_priv->display.crtc_enable = valleyview_crtc_enable;
14372 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14373 dev_priv->display.update_primary_plane =
14374 i9xx_update_primary_plane;
14375 } else {
14376 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
14377 dev_priv->display.get_initial_plane_config =
14378 i9xx_get_initial_plane_config;
14379 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
14380 dev_priv->display.crtc_enable = i9xx_crtc_enable;
14381 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14382 dev_priv->display.update_primary_plane =
14383 i9xx_update_primary_plane;
14384 }
14385
14386 /* Returns the core display clock speed */
14387 if (IS_SKYLAKE(dev))
14388 dev_priv->display.get_display_clock_speed =
14389 skylake_get_display_clock_speed;
14390 else if (IS_BROXTON(dev))
14391 dev_priv->display.get_display_clock_speed =
14392 broxton_get_display_clock_speed;
14393 else if (IS_BROADWELL(dev))
14394 dev_priv->display.get_display_clock_speed =
14395 broadwell_get_display_clock_speed;
14396 else if (IS_HASWELL(dev))
14397 dev_priv->display.get_display_clock_speed =
14398 haswell_get_display_clock_speed;
14399 else if (IS_VALLEYVIEW(dev))
14400 dev_priv->display.get_display_clock_speed =
14401 valleyview_get_display_clock_speed;
14402 else if (IS_GEN5(dev))
14403 dev_priv->display.get_display_clock_speed =
14404 ilk_get_display_clock_speed;
14405 else if (IS_I945G(dev) || IS_BROADWATER(dev) ||
14406 IS_GEN6(dev) || IS_IVYBRIDGE(dev))
14407 dev_priv->display.get_display_clock_speed =
14408 i945_get_display_clock_speed;
14409 else if (IS_GM45(dev))
14410 dev_priv->display.get_display_clock_speed =
14411 gm45_get_display_clock_speed;
14412 else if (IS_CRESTLINE(dev))
14413 dev_priv->display.get_display_clock_speed =
14414 i965gm_get_display_clock_speed;
14415 else if (IS_PINEVIEW(dev))
14416 dev_priv->display.get_display_clock_speed =
14417 pnv_get_display_clock_speed;
14418 else if (IS_G33(dev) || IS_G4X(dev))
14419 dev_priv->display.get_display_clock_speed =
14420 g33_get_display_clock_speed;
14421 else if (IS_I915G(dev))
14422 dev_priv->display.get_display_clock_speed =
14423 i915_get_display_clock_speed;
14424 else if (IS_I945GM(dev) || IS_845G(dev))
14425 dev_priv->display.get_display_clock_speed =
14426 i9xx_misc_get_display_clock_speed;
14427 else if (IS_PINEVIEW(dev))
14428 dev_priv->display.get_display_clock_speed =
14429 pnv_get_display_clock_speed;
14430 else if (IS_I915GM(dev))
14431 dev_priv->display.get_display_clock_speed =
14432 i915gm_get_display_clock_speed;
14433 else if (IS_I865G(dev))
14434 dev_priv->display.get_display_clock_speed =
14435 i865_get_display_clock_speed;
14436 else if (IS_I85X(dev))
14437 dev_priv->display.get_display_clock_speed =
14438 i85x_get_display_clock_speed;
14439 else { /* 830 */
14440 WARN(!IS_I830(dev), "Unknown platform. Assuming 133 MHz CDCLK\n");
14441 dev_priv->display.get_display_clock_speed =
14442 i830_get_display_clock_speed;
14443 }
14444
14445 if (IS_GEN5(dev)) {
14446 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
14447 } else if (IS_GEN6(dev)) {
14448 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
14449 } else if (IS_IVYBRIDGE(dev)) {
14450 /* FIXME: detect B0+ stepping and use auto training */
14451 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
14452 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
14453 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
14454 if (IS_BROADWELL(dev)) {
14455 dev_priv->display.modeset_commit_cdclk =
14456 broadwell_modeset_commit_cdclk;
14457 dev_priv->display.modeset_calc_cdclk =
14458 broadwell_modeset_calc_cdclk;
14459 }
14460 } else if (IS_VALLEYVIEW(dev)) {
14461 dev_priv->display.modeset_commit_cdclk =
14462 valleyview_modeset_commit_cdclk;
14463 dev_priv->display.modeset_calc_cdclk =
14464 valleyview_modeset_calc_cdclk;
14465 } else if (IS_BROXTON(dev)) {
14466 dev_priv->display.modeset_commit_cdclk =
14467 broxton_modeset_commit_cdclk;
14468 dev_priv->display.modeset_calc_cdclk =
14469 broxton_modeset_calc_cdclk;
14470 }
14471
14472 switch (INTEL_INFO(dev)->gen) {
14473 case 2:
14474 dev_priv->display.queue_flip = intel_gen2_queue_flip;
14475 break;
14476
14477 case 3:
14478 dev_priv->display.queue_flip = intel_gen3_queue_flip;
14479 break;
14480
14481 case 4:
14482 case 5:
14483 dev_priv->display.queue_flip = intel_gen4_queue_flip;
14484 break;
14485
14486 case 6:
14487 dev_priv->display.queue_flip = intel_gen6_queue_flip;
14488 break;
14489 case 7:
14490 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
14491 dev_priv->display.queue_flip = intel_gen7_queue_flip;
14492 break;
14493 case 9:
14494 /* Drop through - unsupported since execlist only. */
14495 default:
14496 /* Default just returns -ENODEV to indicate unsupported */
14497 dev_priv->display.queue_flip = intel_default_queue_flip;
14498 }
14499
14500 intel_panel_init_backlight_funcs(dev);
14501
14502 mutex_init(&dev_priv->pps_mutex);
14503 }
14504
14505 /*
14506 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
14507 * resume, or other times. This quirk makes sure that's the case for
14508 * affected systems.
14509 */
14510 static void quirk_pipea_force(struct drm_device *dev)
14511 {
14512 struct drm_i915_private *dev_priv = dev->dev_private;
14513
14514 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
14515 DRM_INFO("applying pipe a force quirk\n");
14516 }
14517
14518 static void quirk_pipeb_force(struct drm_device *dev)
14519 {
14520 struct drm_i915_private *dev_priv = dev->dev_private;
14521
14522 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
14523 DRM_INFO("applying pipe b force quirk\n");
14524 }
14525
14526 /*
14527 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
14528 */
14529 static void quirk_ssc_force_disable(struct drm_device *dev)
14530 {
14531 struct drm_i915_private *dev_priv = dev->dev_private;
14532 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
14533 DRM_INFO("applying lvds SSC disable quirk\n");
14534 }
14535
14536 /*
14537 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
14538 * brightness value
14539 */
14540 static void quirk_invert_brightness(struct drm_device *dev)
14541 {
14542 struct drm_i915_private *dev_priv = dev->dev_private;
14543 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
14544 DRM_INFO("applying inverted panel brightness quirk\n");
14545 }
14546
14547 /* Some VBT's incorrectly indicate no backlight is present */
14548 static void quirk_backlight_present(struct drm_device *dev)
14549 {
14550 struct drm_i915_private *dev_priv = dev->dev_private;
14551 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
14552 DRM_INFO("applying backlight present quirk\n");
14553 }
14554
14555 struct intel_quirk {
14556 int device;
14557 int subsystem_vendor;
14558 int subsystem_device;
14559 void (*hook)(struct drm_device *dev);
14560 };
14561
14562 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
14563 struct intel_dmi_quirk {
14564 void (*hook)(struct drm_device *dev);
14565 const struct dmi_system_id (*dmi_id_list)[];
14566 };
14567
14568 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
14569 {
14570 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
14571 return 1;
14572 }
14573
14574 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
14575 {
14576 .dmi_id_list = &(const struct dmi_system_id[]) {
14577 {
14578 .callback = intel_dmi_reverse_brightness,
14579 .ident = "NCR Corporation",
14580 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
14581 DMI_MATCH(DMI_PRODUCT_NAME, ""),
14582 },
14583 },
14584 { } /* terminating entry */
14585 },
14586 .hook = quirk_invert_brightness,
14587 },
14588 };
14589
14590 static struct intel_quirk intel_quirks[] = {
14591 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
14592 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
14593
14594 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
14595 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
14596
14597 /* 830 needs to leave pipe A & dpll A up */
14598 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
14599
14600 /* 830 needs to leave pipe B & dpll B up */
14601 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
14602
14603 /* Lenovo U160 cannot use SSC on LVDS */
14604 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
14605
14606 /* Sony Vaio Y cannot use SSC on LVDS */
14607 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
14608
14609 /* Acer Aspire 5734Z must invert backlight brightness */
14610 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
14611
14612 /* Acer/eMachines G725 */
14613 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
14614
14615 /* Acer/eMachines e725 */
14616 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
14617
14618 /* Acer/Packard Bell NCL20 */
14619 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
14620
14621 /* Acer Aspire 4736Z */
14622 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
14623
14624 /* Acer Aspire 5336 */
14625 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
14626
14627 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
14628 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
14629
14630 /* Acer C720 Chromebook (Core i3 4005U) */
14631 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
14632
14633 /* Apple Macbook 2,1 (Core 2 T7400) */
14634 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
14635
14636 /* Toshiba CB35 Chromebook (Celeron 2955U) */
14637 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
14638
14639 /* HP Chromebook 14 (Celeron 2955U) */
14640 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
14641
14642 /* Dell Chromebook 11 */
14643 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
14644 };
14645
14646 static void intel_init_quirks(struct drm_device *dev)
14647 {
14648 struct pci_dev *d = dev->pdev;
14649 int i;
14650
14651 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
14652 struct intel_quirk *q = &intel_quirks[i];
14653
14654 if (d->device == q->device &&
14655 (d->subsystem_vendor == q->subsystem_vendor ||
14656 q->subsystem_vendor == PCI_ANY_ID) &&
14657 (d->subsystem_device == q->subsystem_device ||
14658 q->subsystem_device == PCI_ANY_ID))
14659 q->hook(dev);
14660 }
14661 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
14662 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
14663 intel_dmi_quirks[i].hook(dev);
14664 }
14665 }
14666
14667 /* Disable the VGA plane that we never use */
14668 static void i915_disable_vga(struct drm_device *dev)
14669 {
14670 struct drm_i915_private *dev_priv = dev->dev_private;
14671 u8 sr1;
14672 u32 vga_reg = i915_vgacntrl_reg(dev);
14673
14674 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
14675 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
14676 outb(SR01, VGA_SR_INDEX);
14677 sr1 = inb(VGA_SR_DATA);
14678 outb(sr1 | 1<<5, VGA_SR_DATA);
14679 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
14680 udelay(300);
14681
14682 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
14683 POSTING_READ(vga_reg);
14684 }
14685
14686 void intel_modeset_init_hw(struct drm_device *dev)
14687 {
14688 intel_update_cdclk(dev);
14689 intel_prepare_ddi(dev);
14690 intel_init_clock_gating(dev);
14691 intel_enable_gt_powersave(dev);
14692 }
14693
14694 void intel_modeset_init(struct drm_device *dev)
14695 {
14696 struct drm_i915_private *dev_priv = dev->dev_private;
14697 int sprite, ret;
14698 enum pipe pipe;
14699 struct intel_crtc *crtc;
14700
14701 drm_mode_config_init(dev);
14702
14703 dev->mode_config.min_width = 0;
14704 dev->mode_config.min_height = 0;
14705
14706 dev->mode_config.preferred_depth = 24;
14707 dev->mode_config.prefer_shadow = 1;
14708
14709 dev->mode_config.allow_fb_modifiers = true;
14710
14711 dev->mode_config.funcs = &intel_mode_funcs;
14712
14713 intel_init_quirks(dev);
14714
14715 intel_init_pm(dev);
14716
14717 if (INTEL_INFO(dev)->num_pipes == 0)
14718 return;
14719
14720 /*
14721 * There may be no VBT; and if the BIOS enabled SSC we can
14722 * just keep using it to avoid unnecessary flicker. Whereas if the
14723 * BIOS isn't using it, don't assume it will work even if the VBT
14724 * indicates as much.
14725 */
14726 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
14727 bool bios_lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
14728 DREF_SSC1_ENABLE);
14729
14730 if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
14731 DRM_DEBUG_KMS("SSC %sabled by BIOS, overriding VBT which says %sabled\n",
14732 bios_lvds_use_ssc ? "en" : "dis",
14733 dev_priv->vbt.lvds_use_ssc ? "en" : "dis");
14734 dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
14735 }
14736 }
14737
14738 intel_init_display(dev);
14739 intel_init_audio(dev);
14740
14741 if (IS_GEN2(dev)) {
14742 dev->mode_config.max_width = 2048;
14743 dev->mode_config.max_height = 2048;
14744 } else if (IS_GEN3(dev)) {
14745 dev->mode_config.max_width = 4096;
14746 dev->mode_config.max_height = 4096;
14747 } else {
14748 dev->mode_config.max_width = 8192;
14749 dev->mode_config.max_height = 8192;
14750 }
14751
14752 if (IS_845G(dev) || IS_I865G(dev)) {
14753 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
14754 dev->mode_config.cursor_height = 1023;
14755 } else if (IS_GEN2(dev)) {
14756 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
14757 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
14758 } else {
14759 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
14760 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
14761 }
14762
14763 dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
14764
14765 DRM_DEBUG_KMS("%d display pipe%s available.\n",
14766 INTEL_INFO(dev)->num_pipes,
14767 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
14768
14769 for_each_pipe(dev_priv, pipe) {
14770 intel_crtc_init(dev, pipe);
14771 for_each_sprite(dev_priv, pipe, sprite) {
14772 ret = intel_plane_init(dev, pipe, sprite);
14773 if (ret)
14774 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
14775 pipe_name(pipe), sprite_name(pipe, sprite), ret);
14776 }
14777 }
14778
14779 intel_shared_dpll_init(dev);
14780
14781 /* Just disable it once at startup */
14782 i915_disable_vga(dev);
14783 intel_setup_outputs(dev);
14784
14785 /* Just in case the BIOS is doing something questionable. */
14786 intel_fbc_disable(dev_priv);
14787
14788 drm_modeset_lock_all(dev);
14789 intel_modeset_setup_hw_state(dev);
14790 drm_modeset_unlock_all(dev);
14791
14792 for_each_intel_crtc(dev, crtc) {
14793 struct intel_initial_plane_config plane_config = {};
14794
14795 if (!crtc->active)
14796 continue;
14797
14798 /*
14799 * Note that reserving the BIOS fb up front prevents us
14800 * from stuffing other stolen allocations like the ring
14801 * on top. This prevents some ugliness at boot time, and
14802 * can even allow for smooth boot transitions if the BIOS
14803 * fb is large enough for the active pipe configuration.
14804 */
14805 dev_priv->display.get_initial_plane_config(crtc,
14806 &plane_config);
14807
14808 /*
14809 * If the fb is shared between multiple heads, we'll
14810 * just get the first one.
14811 */
14812 intel_find_initial_plane_obj(crtc, &plane_config);
14813 }
14814 }
14815
14816 static void intel_enable_pipe_a(struct drm_device *dev)
14817 {
14818 struct intel_connector *connector;
14819 struct drm_connector *crt = NULL;
14820 struct intel_load_detect_pipe load_detect_temp;
14821 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
14822
14823 /* We can't just switch on the pipe A, we need to set things up with a
14824 * proper mode and output configuration. As a gross hack, enable pipe A
14825 * by enabling the load detect pipe once. */
14826 for_each_intel_connector(dev, connector) {
14827 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
14828 crt = &connector->base;
14829 break;
14830 }
14831 }
14832
14833 if (!crt)
14834 return;
14835
14836 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
14837 intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
14838 }
14839
14840 static bool
14841 intel_check_plane_mapping(struct intel_crtc *crtc)
14842 {
14843 struct drm_device *dev = crtc->base.dev;
14844 struct drm_i915_private *dev_priv = dev->dev_private;
14845 u32 reg, val;
14846
14847 if (INTEL_INFO(dev)->num_pipes == 1)
14848 return true;
14849
14850 reg = DSPCNTR(!crtc->plane);
14851 val = I915_READ(reg);
14852
14853 if ((val & DISPLAY_PLANE_ENABLE) &&
14854 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
14855 return false;
14856
14857 return true;
14858 }
14859
14860 static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
14861 {
14862 struct drm_device *dev = crtc->base.dev;
14863 struct intel_encoder *encoder;
14864
14865 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
14866 return true;
14867
14868 return false;
14869 }
14870
14871 static void intel_sanitize_crtc(struct intel_crtc *crtc)
14872 {
14873 struct drm_device *dev = crtc->base.dev;
14874 struct drm_i915_private *dev_priv = dev->dev_private;
14875 u32 reg;
14876
14877 /* Clear any frame start delays used for debugging left by the BIOS */
14878 reg = PIPECONF(crtc->config->cpu_transcoder);
14879 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
14880
14881 /* restore vblank interrupts to correct state */
14882 drm_crtc_vblank_reset(&crtc->base);
14883 if (crtc->active) {
14884 drm_calc_timestamping_constants(&crtc->base, &crtc->base.hwmode);
14885 update_scanline_offset(crtc);
14886 drm_crtc_vblank_on(&crtc->base);
14887 }
14888
14889 /* We need to sanitize the plane -> pipe mapping first because this will
14890 * disable the crtc (and hence change the state) if it is wrong. Note
14891 * that gen4+ has a fixed plane -> pipe mapping. */
14892 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
14893 bool plane;
14894
14895 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
14896 crtc->base.base.id);
14897
14898 /* Pipe has the wrong plane attached and the plane is active.
14899 * Temporarily change the plane mapping and disable everything
14900 * ... */
14901 plane = crtc->plane;
14902 to_intel_plane_state(crtc->base.primary->state)->visible = true;
14903 crtc->plane = !plane;
14904 intel_crtc_disable_noatomic(&crtc->base);
14905 crtc->plane = plane;
14906 }
14907
14908 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
14909 crtc->pipe == PIPE_A && !crtc->active) {
14910 /* BIOS forgot to enable pipe A, this mostly happens after
14911 * resume. Force-enable the pipe to fix this, the update_dpms
14912 * call below we restore the pipe to the right state, but leave
14913 * the required bits on. */
14914 intel_enable_pipe_a(dev);
14915 }
14916
14917 /* Adjust the state of the output pipe according to whether we
14918 * have active connectors/encoders. */
14919 if (!intel_crtc_has_encoders(crtc))
14920 intel_crtc_disable_noatomic(&crtc->base);
14921
14922 if (crtc->active != crtc->base.state->active) {
14923 struct intel_encoder *encoder;
14924
14925 /* This can happen either due to bugs in the get_hw_state
14926 * functions or because of calls to intel_crtc_disable_noatomic,
14927 * or because the pipe is force-enabled due to the
14928 * pipe A quirk. */
14929 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
14930 crtc->base.base.id,
14931 crtc->base.state->enable ? "enabled" : "disabled",
14932 crtc->active ? "enabled" : "disabled");
14933
14934 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, NULL) < 0);
14935 crtc->base.state->active = crtc->active;
14936 crtc->base.enabled = crtc->active;
14937
14938 /* Because we only establish the connector -> encoder ->
14939 * crtc links if something is active, this means the
14940 * crtc is now deactivated. Break the links. connector
14941 * -> encoder links are only establish when things are
14942 * actually up, hence no need to break them. */
14943 WARN_ON(crtc->active);
14944
14945 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
14946 encoder->base.crtc = NULL;
14947 }
14948
14949 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
14950 /*
14951 * We start out with underrun reporting disabled to avoid races.
14952 * For correct bookkeeping mark this on active crtcs.
14953 *
14954 * Also on gmch platforms we dont have any hardware bits to
14955 * disable the underrun reporting. Which means we need to start
14956 * out with underrun reporting disabled also on inactive pipes,
14957 * since otherwise we'll complain about the garbage we read when
14958 * e.g. coming up after runtime pm.
14959 *
14960 * No protection against concurrent access is required - at
14961 * worst a fifo underrun happens which also sets this to false.
14962 */
14963 crtc->cpu_fifo_underrun_disabled = true;
14964 crtc->pch_fifo_underrun_disabled = true;
14965 }
14966 }
14967
14968 static void intel_sanitize_encoder(struct intel_encoder *encoder)
14969 {
14970 struct intel_connector *connector;
14971 struct drm_device *dev = encoder->base.dev;
14972 bool active = false;
14973
14974 /* We need to check both for a crtc link (meaning that the
14975 * encoder is active and trying to read from a pipe) and the
14976 * pipe itself being active. */
14977 bool has_active_crtc = encoder->base.crtc &&
14978 to_intel_crtc(encoder->base.crtc)->active;
14979
14980 for_each_intel_connector(dev, connector) {
14981 if (connector->base.encoder != &encoder->base)
14982 continue;
14983
14984 active = true;
14985 break;
14986 }
14987
14988 if (active && !has_active_crtc) {
14989 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
14990 encoder->base.base.id,
14991 encoder->base.name);
14992
14993 /* Connector is active, but has no active pipe. This is
14994 * fallout from our resume register restoring. Disable
14995 * the encoder manually again. */
14996 if (encoder->base.crtc) {
14997 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
14998 encoder->base.base.id,
14999 encoder->base.name);
15000 encoder->disable(encoder);
15001 if (encoder->post_disable)
15002 encoder->post_disable(encoder);
15003 }
15004 encoder->base.crtc = NULL;
15005
15006 /* Inconsistent output/port/pipe state happens presumably due to
15007 * a bug in one of the get_hw_state functions. Or someplace else
15008 * in our code, like the register restore mess on resume. Clamp
15009 * things to off as a safer default. */
15010 for_each_intel_connector(dev, connector) {
15011 if (connector->encoder != encoder)
15012 continue;
15013 connector->base.dpms = DRM_MODE_DPMS_OFF;
15014 connector->base.encoder = NULL;
15015 }
15016 }
15017 /* Enabled encoders without active connectors will be fixed in
15018 * the crtc fixup. */
15019 }
15020
15021 void i915_redisable_vga_power_on(struct drm_device *dev)
15022 {
15023 struct drm_i915_private *dev_priv = dev->dev_private;
15024 u32 vga_reg = i915_vgacntrl_reg(dev);
15025
15026 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
15027 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
15028 i915_disable_vga(dev);
15029 }
15030 }
15031
15032 void i915_redisable_vga(struct drm_device *dev)
15033 {
15034 struct drm_i915_private *dev_priv = dev->dev_private;
15035
15036 /* This function can be called both from intel_modeset_setup_hw_state or
15037 * at a very early point in our resume sequence, where the power well
15038 * structures are not yet restored. Since this function is at a very
15039 * paranoid "someone might have enabled VGA while we were not looking"
15040 * level, just check if the power well is enabled instead of trying to
15041 * follow the "don't touch the power well if we don't need it" policy
15042 * the rest of the driver uses. */
15043 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
15044 return;
15045
15046 i915_redisable_vga_power_on(dev);
15047 }
15048
15049 static bool primary_get_hw_state(struct intel_crtc *crtc)
15050 {
15051 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
15052
15053 return !!(I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE);
15054 }
15055
15056 static void readout_plane_state(struct intel_crtc *crtc,
15057 struct intel_crtc_state *crtc_state)
15058 {
15059 struct intel_plane *p;
15060 struct intel_plane_state *plane_state;
15061 bool active = crtc_state->base.active;
15062
15063 for_each_intel_plane(crtc->base.dev, p) {
15064 if (crtc->pipe != p->pipe)
15065 continue;
15066
15067 plane_state = to_intel_plane_state(p->base.state);
15068
15069 if (p->base.type == DRM_PLANE_TYPE_PRIMARY)
15070 plane_state->visible = primary_get_hw_state(crtc);
15071 else {
15072 if (active)
15073 p->disable_plane(&p->base, &crtc->base);
15074
15075 plane_state->visible = false;
15076 }
15077 }
15078 }
15079
15080 static void intel_modeset_readout_hw_state(struct drm_device *dev)
15081 {
15082 struct drm_i915_private *dev_priv = dev->dev_private;
15083 enum pipe pipe;
15084 struct intel_crtc *crtc;
15085 struct intel_encoder *encoder;
15086 struct intel_connector *connector;
15087 int i;
15088
15089 for_each_intel_crtc(dev, crtc) {
15090 __drm_atomic_helper_crtc_destroy_state(&crtc->base, crtc->base.state);
15091 memset(crtc->config, 0, sizeof(*crtc->config));
15092 crtc->config->base.crtc = &crtc->base;
15093
15094 crtc->active = dev_priv->display.get_pipe_config(crtc,
15095 crtc->config);
15096
15097 crtc->base.state->active = crtc->active;
15098 crtc->base.enabled = crtc->active;
15099
15100 memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
15101 if (crtc->base.state->active) {
15102 intel_mode_from_pipe_config(&crtc->base.mode, crtc->config);
15103 intel_mode_from_pipe_config(&crtc->base.state->adjusted_mode, crtc->config);
15104 WARN_ON(drm_atomic_set_mode_for_crtc(crtc->base.state, &crtc->base.mode));
15105
15106 /*
15107 * The initial mode needs to be set in order to keep
15108 * the atomic core happy. It wants a valid mode if the
15109 * crtc's enabled, so we do the above call.
15110 *
15111 * At this point some state updated by the connectors
15112 * in their ->detect() callback has not run yet, so
15113 * no recalculation can be done yet.
15114 *
15115 * Even if we could do a recalculation and modeset
15116 * right now it would cause a double modeset if
15117 * fbdev or userspace chooses a different initial mode.
15118 *
15119 * If that happens, someone indicated they wanted a
15120 * mode change, which means it's safe to do a full
15121 * recalculation.
15122 */
15123 crtc->base.state->mode.private_flags = I915_MODE_FLAG_INHERITED;
15124 }
15125
15126 crtc->base.hwmode = crtc->config->base.adjusted_mode;
15127 readout_plane_state(crtc, to_intel_crtc_state(crtc->base.state));
15128
15129 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
15130 crtc->base.base.id,
15131 crtc->active ? "enabled" : "disabled");
15132 }
15133
15134 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15135 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15136
15137 pll->on = pll->get_hw_state(dev_priv, pll,
15138 &pll->config.hw_state);
15139 pll->active = 0;
15140 pll->config.crtc_mask = 0;
15141 for_each_intel_crtc(dev, crtc) {
15142 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
15143 pll->active++;
15144 pll->config.crtc_mask |= 1 << crtc->pipe;
15145 }
15146 }
15147
15148 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
15149 pll->name, pll->config.crtc_mask, pll->on);
15150
15151 if (pll->config.crtc_mask)
15152 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
15153 }
15154
15155 for_each_intel_encoder(dev, encoder) {
15156 pipe = 0;
15157
15158 if (encoder->get_hw_state(encoder, &pipe)) {
15159 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15160 encoder->base.crtc = &crtc->base;
15161 encoder->get_config(encoder, crtc->config);
15162 } else {
15163 encoder->base.crtc = NULL;
15164 }
15165
15166 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
15167 encoder->base.base.id,
15168 encoder->base.name,
15169 encoder->base.crtc ? "enabled" : "disabled",
15170 pipe_name(pipe));
15171 }
15172
15173 for_each_intel_connector(dev, connector) {
15174 if (connector->get_hw_state(connector)) {
15175 connector->base.dpms = DRM_MODE_DPMS_ON;
15176 connector->base.encoder = &connector->encoder->base;
15177 } else {
15178 connector->base.dpms = DRM_MODE_DPMS_OFF;
15179 connector->base.encoder = NULL;
15180 }
15181 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
15182 connector->base.base.id,
15183 connector->base.name,
15184 connector->base.encoder ? "enabled" : "disabled");
15185 }
15186 }
15187
15188 /* Scan out the current hw modeset state,
15189 * and sanitizes it to the current state
15190 */
15191 static void
15192 intel_modeset_setup_hw_state(struct drm_device *dev)
15193 {
15194 struct drm_i915_private *dev_priv = dev->dev_private;
15195 enum pipe pipe;
15196 struct intel_crtc *crtc;
15197 struct intel_encoder *encoder;
15198 int i;
15199
15200 intel_modeset_readout_hw_state(dev);
15201
15202 /* HW state is read out, now we need to sanitize this mess. */
15203 for_each_intel_encoder(dev, encoder) {
15204 intel_sanitize_encoder(encoder);
15205 }
15206
15207 for_each_pipe(dev_priv, pipe) {
15208 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
15209 intel_sanitize_crtc(crtc);
15210 intel_dump_pipe_config(crtc, crtc->config,
15211 "[setup_hw_state]");
15212 }
15213
15214 intel_modeset_update_connector_atomic_state(dev);
15215
15216 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
15217 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
15218
15219 if (!pll->on || pll->active)
15220 continue;
15221
15222 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
15223
15224 pll->disable(dev_priv, pll);
15225 pll->on = false;
15226 }
15227
15228 if (IS_VALLEYVIEW(dev))
15229 vlv_wm_get_hw_state(dev);
15230 else if (IS_GEN9(dev))
15231 skl_wm_get_hw_state(dev);
15232 else if (HAS_PCH_SPLIT(dev))
15233 ilk_wm_get_hw_state(dev);
15234
15235 for_each_intel_crtc(dev, crtc) {
15236 unsigned long put_domains;
15237
15238 put_domains = modeset_get_crtc_power_domains(&crtc->base);
15239 if (WARN_ON(put_domains))
15240 modeset_put_power_domains(dev_priv, put_domains);
15241 }
15242 intel_display_set_init_power(dev_priv, false);
15243 }
15244
15245 void intel_display_resume(struct drm_device *dev)
15246 {
15247 struct drm_atomic_state *state = drm_atomic_state_alloc(dev);
15248 struct intel_connector *conn;
15249 struct intel_plane *plane;
15250 struct drm_crtc *crtc;
15251 int ret;
15252
15253 if (!state)
15254 return;
15255
15256 state->acquire_ctx = dev->mode_config.acquire_ctx;
15257
15258 /* preserve complete old state, including dpll */
15259 intel_atomic_get_shared_dpll_state(state);
15260
15261 for_each_crtc(dev, crtc) {
15262 struct drm_crtc_state *crtc_state =
15263 drm_atomic_get_crtc_state(state, crtc);
15264
15265 ret = PTR_ERR_OR_ZERO(crtc_state);
15266 if (ret)
15267 goto err;
15268
15269 /* force a restore */
15270 crtc_state->mode_changed = true;
15271 }
15272
15273 for_each_intel_plane(dev, plane) {
15274 ret = PTR_ERR_OR_ZERO(drm_atomic_get_plane_state(state, &plane->base));
15275 if (ret)
15276 goto err;
15277 }
15278
15279 for_each_intel_connector(dev, conn) {
15280 ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(state, &conn->base));
15281 if (ret)
15282 goto err;
15283 }
15284
15285 intel_modeset_setup_hw_state(dev);
15286
15287 i915_redisable_vga(dev);
15288 ret = drm_atomic_commit(state);
15289 if (!ret)
15290 return;
15291
15292 err:
15293 DRM_ERROR("Restoring old state failed with %i\n", ret);
15294 drm_atomic_state_free(state);
15295 }
15296
15297 void intel_modeset_gem_init(struct drm_device *dev)
15298 {
15299 struct drm_crtc *c;
15300 struct drm_i915_gem_object *obj;
15301 int ret;
15302
15303 mutex_lock(&dev->struct_mutex);
15304 intel_init_gt_powersave(dev);
15305 mutex_unlock(&dev->struct_mutex);
15306
15307 intel_modeset_init_hw(dev);
15308
15309 intel_setup_overlay(dev);
15310
15311 /*
15312 * Make sure any fbs we allocated at startup are properly
15313 * pinned & fenced. When we do the allocation it's too early
15314 * for this.
15315 */
15316 for_each_crtc(dev, c) {
15317 obj = intel_fb_obj(c->primary->fb);
15318 if (obj == NULL)
15319 continue;
15320
15321 mutex_lock(&dev->struct_mutex);
15322 ret = intel_pin_and_fence_fb_obj(c->primary,
15323 c->primary->fb,
15324 c->primary->state,
15325 NULL, NULL);
15326 mutex_unlock(&dev->struct_mutex);
15327 if (ret) {
15328 DRM_ERROR("failed to pin boot fb on pipe %d\n",
15329 to_intel_crtc(c)->pipe);
15330 drm_framebuffer_unreference(c->primary->fb);
15331 c->primary->fb = NULL;
15332 c->primary->crtc = c->primary->state->crtc = NULL;
15333 update_state_fb(c->primary);
15334 c->state->plane_mask &= ~(1 << drm_plane_index(c->primary));
15335 }
15336 }
15337
15338 intel_backlight_register(dev);
15339 }
15340
15341 void intel_connector_unregister(struct intel_connector *intel_connector)
15342 {
15343 struct drm_connector *connector = &intel_connector->base;
15344
15345 intel_panel_destroy_backlight(connector);
15346 drm_connector_unregister(connector);
15347 }
15348
15349 void intel_modeset_cleanup(struct drm_device *dev)
15350 {
15351 struct drm_i915_private *dev_priv = dev->dev_private;
15352 struct drm_connector *connector;
15353
15354 intel_disable_gt_powersave(dev);
15355
15356 intel_backlight_unregister(dev);
15357
15358 /*
15359 * Interrupts and polling as the first thing to avoid creating havoc.
15360 * Too much stuff here (turning of connectors, ...) would
15361 * experience fancy races otherwise.
15362 */
15363 intel_irq_uninstall(dev_priv);
15364
15365 /*
15366 * Due to the hpd irq storm handling the hotplug work can re-arm the
15367 * poll handlers. Hence disable polling after hpd handling is shut down.
15368 */
15369 drm_kms_helper_poll_fini(dev);
15370
15371 intel_unregister_dsm_handler();
15372
15373 intel_fbc_disable(dev_priv);
15374
15375 /* flush any delayed tasks or pending work */
15376 flush_scheduled_work();
15377
15378 /* destroy the backlight and sysfs files before encoders/connectors */
15379 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
15380 struct intel_connector *intel_connector;
15381
15382 intel_connector = to_intel_connector(connector);
15383 intel_connector->unregister(intel_connector);
15384 }
15385
15386 drm_mode_config_cleanup(dev);
15387
15388 intel_cleanup_overlay(dev);
15389
15390 mutex_lock(&dev->struct_mutex);
15391 intel_cleanup_gt_powersave(dev);
15392 mutex_unlock(&dev->struct_mutex);
15393 }
15394
15395 /*
15396 * Return which encoder is currently attached for connector.
15397 */
15398 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
15399 {
15400 return &intel_attached_encoder(connector)->base;
15401 }
15402
15403 void intel_connector_attach_encoder(struct intel_connector *connector,
15404 struct intel_encoder *encoder)
15405 {
15406 connector->encoder = encoder;
15407 drm_mode_connector_attach_encoder(&connector->base,
15408 &encoder->base);
15409 }
15410
15411 /*
15412 * set vga decode state - true == enable VGA decode
15413 */
15414 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
15415 {
15416 struct drm_i915_private *dev_priv = dev->dev_private;
15417 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
15418 u16 gmch_ctrl;
15419
15420 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
15421 DRM_ERROR("failed to read control word\n");
15422 return -EIO;
15423 }
15424
15425 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
15426 return 0;
15427
15428 if (state)
15429 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
15430 else
15431 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
15432
15433 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
15434 DRM_ERROR("failed to write control word\n");
15435 return -EIO;
15436 }
15437
15438 return 0;
15439 }
15440
15441 struct intel_display_error_state {
15442
15443 u32 power_well_driver;
15444
15445 int num_transcoders;
15446
15447 struct intel_cursor_error_state {
15448 u32 control;
15449 u32 position;
15450 u32 base;
15451 u32 size;
15452 } cursor[I915_MAX_PIPES];
15453
15454 struct intel_pipe_error_state {
15455 bool power_domain_on;
15456 u32 source;
15457 u32 stat;
15458 } pipe[I915_MAX_PIPES];
15459
15460 struct intel_plane_error_state {
15461 u32 control;
15462 u32 stride;
15463 u32 size;
15464 u32 pos;
15465 u32 addr;
15466 u32 surface;
15467 u32 tile_offset;
15468 } plane[I915_MAX_PIPES];
15469
15470 struct intel_transcoder_error_state {
15471 bool power_domain_on;
15472 enum transcoder cpu_transcoder;
15473
15474 u32 conf;
15475
15476 u32 htotal;
15477 u32 hblank;
15478 u32 hsync;
15479 u32 vtotal;
15480 u32 vblank;
15481 u32 vsync;
15482 } transcoder[4];
15483 };
15484
15485 struct intel_display_error_state *
15486 intel_display_capture_error_state(struct drm_device *dev)
15487 {
15488 struct drm_i915_private *dev_priv = dev->dev_private;
15489 struct intel_display_error_state *error;
15490 int transcoders[] = {
15491 TRANSCODER_A,
15492 TRANSCODER_B,
15493 TRANSCODER_C,
15494 TRANSCODER_EDP,
15495 };
15496 int i;
15497
15498 if (INTEL_INFO(dev)->num_pipes == 0)
15499 return NULL;
15500
15501 error = kzalloc(sizeof(*error), GFP_ATOMIC);
15502 if (error == NULL)
15503 return NULL;
15504
15505 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15506 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
15507
15508 for_each_pipe(dev_priv, i) {
15509 error->pipe[i].power_domain_on =
15510 __intel_display_power_is_enabled(dev_priv,
15511 POWER_DOMAIN_PIPE(i));
15512 if (!error->pipe[i].power_domain_on)
15513 continue;
15514
15515 error->cursor[i].control = I915_READ(CURCNTR(i));
15516 error->cursor[i].position = I915_READ(CURPOS(i));
15517 error->cursor[i].base = I915_READ(CURBASE(i));
15518
15519 error->plane[i].control = I915_READ(DSPCNTR(i));
15520 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
15521 if (INTEL_INFO(dev)->gen <= 3) {
15522 error->plane[i].size = I915_READ(DSPSIZE(i));
15523 error->plane[i].pos = I915_READ(DSPPOS(i));
15524 }
15525 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15526 error->plane[i].addr = I915_READ(DSPADDR(i));
15527 if (INTEL_INFO(dev)->gen >= 4) {
15528 error->plane[i].surface = I915_READ(DSPSURF(i));
15529 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
15530 }
15531
15532 error->pipe[i].source = I915_READ(PIPESRC(i));
15533
15534 if (HAS_GMCH_DISPLAY(dev))
15535 error->pipe[i].stat = I915_READ(PIPESTAT(i));
15536 }
15537
15538 error->num_transcoders = INTEL_INFO(dev)->num_pipes;
15539 if (HAS_DDI(dev_priv->dev))
15540 error->num_transcoders++; /* Account for eDP. */
15541
15542 for (i = 0; i < error->num_transcoders; i++) {
15543 enum transcoder cpu_transcoder = transcoders[i];
15544
15545 error->transcoder[i].power_domain_on =
15546 __intel_display_power_is_enabled(dev_priv,
15547 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
15548 if (!error->transcoder[i].power_domain_on)
15549 continue;
15550
15551 error->transcoder[i].cpu_transcoder = cpu_transcoder;
15552
15553 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
15554 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
15555 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
15556 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
15557 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
15558 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
15559 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
15560 }
15561
15562 return error;
15563 }
15564
15565 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
15566
15567 void
15568 intel_display_print_error_state(struct drm_i915_error_state_buf *m,
15569 struct drm_device *dev,
15570 struct intel_display_error_state *error)
15571 {
15572 struct drm_i915_private *dev_priv = dev->dev_private;
15573 int i;
15574
15575 if (!error)
15576 return;
15577
15578 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
15579 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
15580 err_printf(m, "PWR_WELL_CTL2: %08x\n",
15581 error->power_well_driver);
15582 for_each_pipe(dev_priv, i) {
15583 err_printf(m, "Pipe [%d]:\n", i);
15584 err_printf(m, " Power: %s\n",
15585 error->pipe[i].power_domain_on ? "on" : "off");
15586 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
15587 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
15588
15589 err_printf(m, "Plane [%d]:\n", i);
15590 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
15591 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
15592 if (INTEL_INFO(dev)->gen <= 3) {
15593 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
15594 err_printf(m, " POS: %08x\n", error->plane[i].pos);
15595 }
15596 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15597 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
15598 if (INTEL_INFO(dev)->gen >= 4) {
15599 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
15600 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
15601 }
15602
15603 err_printf(m, "Cursor [%d]:\n", i);
15604 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
15605 err_printf(m, " POS: %08x\n", error->cursor[i].position);
15606 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
15607 }
15608
15609 for (i = 0; i < error->num_transcoders; i++) {
15610 err_printf(m, "CPU transcoder: %c\n",
15611 transcoder_name(error->transcoder[i].cpu_transcoder));
15612 err_printf(m, " Power: %s\n",
15613 error->transcoder[i].power_domain_on ? "on" : "off");
15614 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
15615 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
15616 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
15617 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
15618 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
15619 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
15620 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
15621 }
15622 }
15623
15624 void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
15625 {
15626 struct intel_crtc *crtc;
15627
15628 for_each_intel_crtc(dev, crtc) {
15629 struct intel_unpin_work *work;
15630
15631 spin_lock_irq(&dev->event_lock);
15632
15633 work = crtc->unpin_work;
15634
15635 if (work && work->event &&
15636 work->event->base.file_priv == file) {
15637 kfree(work->event);
15638 work->event = NULL;
15639 }
15640
15641 spin_unlock_irq(&dev->event_lock);
15642 }
15643 }
Linux kernel - Deliverables
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