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drm/i915: convert CPU M/N timings to transcoder
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_display.c
CommitLineData
79e53945
JB		 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
618563e3 27#include <linux/dmi.h>
c1c7af60
JB		 28#include <linux/module.h>
29#include <linux/input.h>
79e53945 30#include <linux/i2c.h>
7662c8bd 31#include <linux/kernel.h>
5a0e3ad6 32#include <linux/slab.h>
9cce37f4 33#include <linux/vgaarb.h>
e0dac65e 34#include <drm/drm_edid.h>
760285e7 35#include <drm/drmP.h>
79e53945 36#include "intel_drv.h"
760285e7 37#include <drm/i915_drm.h>
79e53945 38#include "i915_drv.h"
e5510fac 39#include "i915_trace.h"
760285e7
DH		 40#include <drm/drm_dp_helper.h>
41#include <drm/drm_crtc_helper.h>
c0f372b3 42#include <linux/dma_remapping.h>
79e53945 43
32f9d658
ZW		 44#define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
45
0206e353 46bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
3dec0095 47static void intel_increase_pllclock(struct drm_crtc *crtc);
6b383a7f 48static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
79e53945
JB		 49
50typedef struct {
0206e353
AJ		 51 /* given values */
52 int n;
53 int m1, m2;
54 int p1, p2;
55 /* derived values */
56 int dot;
57 int vco;
58 int m;
59 int p;
79e53945
JB		 60} intel_clock_t;
61
62typedef struct {
0206e353 63 int min, max;
79e53945
JB		 64} intel_range_t;
65
66typedef struct {
0206e353
AJ		 67 int dot_limit;
68 int p2_slow, p2_fast;
79e53945
JB		 69} intel_p2_t;
70
71#define INTEL_P2_NUM 2
d4906093
ML		 72typedef struct intel_limit intel_limit_t;
73struct intel_limit {
0206e353
AJ		 74 intel_range_t dot, vco, n, m, m1, m2, p, p1;
75 intel_p2_t p2;
76 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
cec2f356 77 int, int, intel_clock_t *, intel_clock_t *);
d4906093 78};
79e53945 79
2377b741
JB		 80/* FDI */
81#define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
82
d2acd215
DV		 83int
84intel_pch_rawclk(struct drm_device *dev)
85{
86 struct drm_i915_private *dev_priv = dev->dev_private;
87
88 WARN_ON(!HAS_PCH_SPLIT(dev));
89
90 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
91}
92
d4906093
ML		 93static bool
94intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 95 int target, int refclk, intel_clock_t *match_clock,
96 intel_clock_t *best_clock);
d4906093
ML		 97static bool
98intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 99 int target, int refclk, intel_clock_t *match_clock,
100 intel_clock_t *best_clock);
79e53945 101
a4fc5ed6
KP		 102static bool
103intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
cec2f356
SP		 104 int target, int refclk, intel_clock_t *match_clock,
105 intel_clock_t *best_clock);
5eb08b69 106static bool
f2b115e6 107intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
cec2f356
SP		 108 int target, int refclk, intel_clock_t *match_clock,
109 intel_clock_t *best_clock);
a4fc5ed6 110
a0c4da24
JB		 111static bool
112intel_vlv_find_best_pll(const intel_limit_t *limit, struct drm_crtc *crtc,
113 int target, int refclk, intel_clock_t *match_clock,
114 intel_clock_t *best_clock);
115
021357ac
CW		 116static inline u32 /* units of 100MHz */
117intel_fdi_link_freq(struct drm_device *dev)
118{
8b99e68c
CW		 119 if (IS_GEN5(dev)) {
120 struct drm_i915_private *dev_priv = dev->dev_private;
121 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
122 } else
123 return 27;
021357ac
CW		 124}
125
e4b36699 126static const intel_limit_t intel_limits_i8xx_dvo = {
0206e353
AJ		 127 .dot = { .min = 25000, .max = 350000 },
128 .vco = { .min = 930000, .max = 1400000 },
129 .n = { .min = 3, .max = 16 },
130 .m = { .min = 96, .max = 140 },
131 .m1 = { .min = 18, .max = 26 },
132 .m2 = { .min = 6, .max = 16 },
133 .p = { .min = 4, .max = 128 },
134 .p1 = { .min = 2, .max = 33 },
273e27ca
EA		 135 .p2 = { .dot_limit = 165000,
136 .p2_slow = 4, .p2_fast = 2 },
d4906093 137 .find_pll = intel_find_best_PLL,
e4b36699
KP		 138};
139
140static const intel_limit_t intel_limits_i8xx_lvds = {
0206e353
AJ		 141 .dot = { .min = 25000, .max = 350000 },
142 .vco = { .min = 930000, .max = 1400000 },
143 .n = { .min = 3, .max = 16 },
144 .m = { .min = 96, .max = 140 },
145 .m1 = { .min = 18, .max = 26 },
146 .m2 = { .min = 6, .max = 16 },
147 .p = { .min = 4, .max = 128 },
148 .p1 = { .min = 1, .max = 6 },
273e27ca
EA		 149 .p2 = { .dot_limit = 165000,
150 .p2_slow = 14, .p2_fast = 7 },
d4906093 151 .find_pll = intel_find_best_PLL,
e4b36699 152};
273e27ca 153
e4b36699 154static const intel_limit_t intel_limits_i9xx_sdvo = {
0206e353
AJ		 155 .dot = { .min = 20000, .max = 400000 },
156 .vco = { .min = 1400000, .max = 2800000 },
157 .n = { .min = 1, .max = 6 },
158 .m = { .min = 70, .max = 120 },
159 .m1 = { .min = 10, .max = 22 },
160 .m2 = { .min = 5, .max = 9 },
161 .p = { .min = 5, .max = 80 },
162 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 163 .p2 = { .dot_limit = 200000,
164 .p2_slow = 10, .p2_fast = 5 },
d4906093 165 .find_pll = intel_find_best_PLL,
e4b36699
KP		 166};
167
168static const intel_limit_t intel_limits_i9xx_lvds = {
0206e353
AJ		 169 .dot = { .min = 20000, .max = 400000 },
170 .vco = { .min = 1400000, .max = 2800000 },
171 .n = { .min = 1, .max = 6 },
172 .m = { .min = 70, .max = 120 },
173 .m1 = { .min = 10, .max = 22 },
174 .m2 = { .min = 5, .max = 9 },
175 .p = { .min = 7, .max = 98 },
176 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 177 .p2 = { .dot_limit = 112000,
178 .p2_slow = 14, .p2_fast = 7 },
d4906093 179 .find_pll = intel_find_best_PLL,
e4b36699
KP		 180};
181
273e27ca 182
e4b36699 183static const intel_limit_t intel_limits_g4x_sdvo = {
273e27ca
EA		 184 .dot = { .min = 25000, .max = 270000 },
185 .vco = { .min = 1750000, .max = 3500000},
186 .n = { .min = 1, .max = 4 },
187 .m = { .min = 104, .max = 138 },
188 .m1 = { .min = 17, .max = 23 },
189 .m2 = { .min = 5, .max = 11 },
190 .p = { .min = 10, .max = 30 },
191 .p1 = { .min = 1, .max = 3},
192 .p2 = { .dot_limit = 270000,
193 .p2_slow = 10,
194 .p2_fast = 10
044c7c41 195 },
d4906093 196 .find_pll = intel_g4x_find_best_PLL,
e4b36699
KP		 197};
198
199static const intel_limit_t intel_limits_g4x_hdmi = {
273e27ca
EA		 200 .dot = { .min = 22000, .max = 400000 },
201 .vco = { .min = 1750000, .max = 3500000},
202 .n = { .min = 1, .max = 4 },
203 .m = { .min = 104, .max = 138 },
204 .m1 = { .min = 16, .max = 23 },
205 .m2 = { .min = 5, .max = 11 },
206 .p = { .min = 5, .max = 80 },
207 .p1 = { .min = 1, .max = 8},
208 .p2 = { .dot_limit = 165000,
209 .p2_slow = 10, .p2_fast = 5 },
d4906093 210 .find_pll = intel_g4x_find_best_PLL,
e4b36699
KP		 211};
212
213static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
273e27ca
EA		 214 .dot = { .min = 20000, .max = 115000 },
215 .vco = { .min = 1750000, .max = 3500000 },
216 .n = { .min = 1, .max = 3 },
217 .m = { .min = 104, .max = 138 },
218 .m1 = { .min = 17, .max = 23 },
219 .m2 = { .min = 5, .max = 11 },
220 .p = { .min = 28, .max = 112 },
221 .p1 = { .min = 2, .max = 8 },
222 .p2 = { .dot_limit = 0,
223 .p2_slow = 14, .p2_fast = 14
044c7c41 224 },
d4906093 225 .find_pll = intel_g4x_find_best_PLL,
e4b36699
KP		 226};
227
228static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
273e27ca
EA		 229 .dot = { .min = 80000, .max = 224000 },
230 .vco = { .min = 1750000, .max = 3500000 },
231 .n = { .min = 1, .max = 3 },
232 .m = { .min = 104, .max = 138 },
233 .m1 = { .min = 17, .max = 23 },
234 .m2 = { .min = 5, .max = 11 },
235 .p = { .min = 14, .max = 42 },
236 .p1 = { .min = 2, .max = 6 },
237 .p2 = { .dot_limit = 0,
238 .p2_slow = 7, .p2_fast = 7
044c7c41 239 },
d4906093 240 .find_pll = intel_g4x_find_best_PLL,
e4b36699
KP		 241};
242
243static const intel_limit_t intel_limits_g4x_display_port = {
0206e353
AJ		 244 .dot = { .min = 161670, .max = 227000 },
245 .vco = { .min = 1750000, .max = 3500000},
246 .n = { .min = 1, .max = 2 },
247 .m = { .min = 97, .max = 108 },
248 .m1 = { .min = 0x10, .max = 0x12 },
249 .m2 = { .min = 0x05, .max = 0x06 },
250 .p = { .min = 10, .max = 20 },
251 .p1 = { .min = 1, .max = 2},
252 .p2 = { .dot_limit = 0,
273e27ca 253 .p2_slow = 10, .p2_fast = 10 },
0206e353 254 .find_pll = intel_find_pll_g4x_dp,
e4b36699
KP		 255};
256
f2b115e6 257static const intel_limit_t intel_limits_pineview_sdvo = {
0206e353
AJ		 258 .dot = { .min = 20000, .max = 400000},
259 .vco = { .min = 1700000, .max = 3500000 },
273e27ca 260 /* Pineview's Ncounter is a ring counter */
0206e353
AJ		 261 .n = { .min = 3, .max = 6 },
262 .m = { .min = 2, .max = 256 },
273e27ca 263 /* Pineview only has one combined m divider, which we treat as m2. */
0206e353
AJ		 264 .m1 = { .min = 0, .max = 0 },
265 .m2 = { .min = 0, .max = 254 },
266 .p = { .min = 5, .max = 80 },
267 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 268 .p2 = { .dot_limit = 200000,
269 .p2_slow = 10, .p2_fast = 5 },
6115707b 270 .find_pll = intel_find_best_PLL,
e4b36699
KP		 271};
272
f2b115e6 273static const intel_limit_t intel_limits_pineview_lvds = {
0206e353
AJ		 274 .dot = { .min = 20000, .max = 400000 },
275 .vco = { .min = 1700000, .max = 3500000 },
276 .n = { .min = 3, .max = 6 },
277 .m = { .min = 2, .max = 256 },
278 .m1 = { .min = 0, .max = 0 },
279 .m2 = { .min = 0, .max = 254 },
280 .p = { .min = 7, .max = 112 },
281 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 282 .p2 = { .dot_limit = 112000,
283 .p2_slow = 14, .p2_fast = 14 },
6115707b 284 .find_pll = intel_find_best_PLL,
e4b36699
KP		 285};
286
273e27ca
EA		 287/* Ironlake / Sandybridge
288 *
289 * We calculate clock using (register_value + 2) for N/M1/M2, so here
290 * the range value for them is (actual_value - 2).
291 */
b91ad0ec 292static const intel_limit_t intel_limits_ironlake_dac = {
273e27ca
EA		 293 .dot = { .min = 25000, .max = 350000 },
294 .vco = { .min = 1760000, .max = 3510000 },
295 .n = { .min = 1, .max = 5 },
296 .m = { .min = 79, .max = 127 },
297 .m1 = { .min = 12, .max = 22 },
298 .m2 = { .min = 5, .max = 9 },
299 .p = { .min = 5, .max = 80 },
300 .p1 = { .min = 1, .max = 8 },
301 .p2 = { .dot_limit = 225000,
302 .p2_slow = 10, .p2_fast = 5 },
4547668a 303 .find_pll = intel_g4x_find_best_PLL,
e4b36699
KP		 304};
305
b91ad0ec 306static const intel_limit_t intel_limits_ironlake_single_lvds = {
273e27ca
EA		 307 .dot = { .min = 25000, .max = 350000 },
308 .vco = { .min = 1760000, .max = 3510000 },
309 .n = { .min = 1, .max = 3 },
310 .m = { .min = 79, .max = 118 },
311 .m1 = { .min = 12, .max = 22 },
312 .m2 = { .min = 5, .max = 9 },
313 .p = { .min = 28, .max = 112 },
314 .p1 = { .min = 2, .max = 8 },
315 .p2 = { .dot_limit = 225000,
316 .p2_slow = 14, .p2_fast = 14 },
b91ad0ec
ZW		 317 .find_pll = intel_g4x_find_best_PLL,
318};
319
320static const intel_limit_t intel_limits_ironlake_dual_lvds = {
273e27ca
EA		 321 .dot = { .min = 25000, .max = 350000 },
322 .vco = { .min = 1760000, .max = 3510000 },
323 .n = { .min = 1, .max = 3 },
324 .m = { .min = 79, .max = 127 },
325 .m1 = { .min = 12, .max = 22 },
326 .m2 = { .min = 5, .max = 9 },
327 .p = { .min = 14, .max = 56 },
328 .p1 = { .min = 2, .max = 8 },
329 .p2 = { .dot_limit = 225000,
330 .p2_slow = 7, .p2_fast = 7 },
b91ad0ec
ZW		 331 .find_pll = intel_g4x_find_best_PLL,
332};
333
273e27ca 334/* LVDS 100mhz refclk limits. */
b91ad0ec 335static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
273e27ca
EA		 336 .dot = { .min = 25000, .max = 350000 },
337 .vco = { .min = 1760000, .max = 3510000 },
338 .n = { .min = 1, .max = 2 },
339 .m = { .min = 79, .max = 126 },
340 .m1 = { .min = 12, .max = 22 },
341 .m2 = { .min = 5, .max = 9 },
342 .p = { .min = 28, .max = 112 },
0206e353 343 .p1 = { .min = 2, .max = 8 },
273e27ca
EA		 344 .p2 = { .dot_limit = 225000,
345 .p2_slow = 14, .p2_fast = 14 },
b91ad0ec
ZW		 346 .find_pll = intel_g4x_find_best_PLL,
347};
348
349static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
273e27ca
EA		 350 .dot = { .min = 25000, .max = 350000 },
351 .vco = { .min = 1760000, .max = 3510000 },
352 .n = { .min = 1, .max = 3 },
353 .m = { .min = 79, .max = 126 },
354 .m1 = { .min = 12, .max = 22 },
355 .m2 = { .min = 5, .max = 9 },
356 .p = { .min = 14, .max = 42 },
0206e353 357 .p1 = { .min = 2, .max = 6 },
273e27ca
EA		 358 .p2 = { .dot_limit = 225000,
359 .p2_slow = 7, .p2_fast = 7 },
4547668a
ZY		 360 .find_pll = intel_g4x_find_best_PLL,
361};
362
363static const intel_limit_t intel_limits_ironlake_display_port = {
0206e353
AJ		 364 .dot = { .min = 25000, .max = 350000 },
365 .vco = { .min = 1760000, .max = 3510000},
366 .n = { .min = 1, .max = 2 },
367 .m = { .min = 81, .max = 90 },
368 .m1 = { .min = 12, .max = 22 },
369 .m2 = { .min = 5, .max = 9 },
370 .p = { .min = 10, .max = 20 },
371 .p1 = { .min = 1, .max = 2},
372 .p2 = { .dot_limit = 0,
273e27ca 373 .p2_slow = 10, .p2_fast = 10 },
0206e353 374 .find_pll = intel_find_pll_ironlake_dp,
79e53945
JB		 375};
376
a0c4da24
JB		 377static const intel_limit_t intel_limits_vlv_dac = {
378 .dot = { .min = 25000, .max = 270000 },
379 .vco = { .min = 4000000, .max = 6000000 },
380 .n = { .min = 1, .max = 7 },
381 .m = { .min = 22, .max = 450 }, /* guess */
382 .m1 = { .min = 2, .max = 3 },
383 .m2 = { .min = 11, .max = 156 },
384 .p = { .min = 10, .max = 30 },
385 .p1 = { .min = 2, .max = 3 },
386 .p2 = { .dot_limit = 270000,
387 .p2_slow = 2, .p2_fast = 20 },
388 .find_pll = intel_vlv_find_best_pll,
389};
390
391static const intel_limit_t intel_limits_vlv_hdmi = {
392 .dot = { .min = 20000, .max = 165000 },
17dc9257 393 .vco = { .min = 4000000, .max = 5994000},
a0c4da24
JB		 394 .n = { .min = 1, .max = 7 },
395 .m = { .min = 60, .max = 300 }, /* guess */
396 .m1 = { .min = 2, .max = 3 },
397 .m2 = { .min = 11, .max = 156 },
398 .p = { .min = 10, .max = 30 },
399 .p1 = { .min = 2, .max = 3 },
400 .p2 = { .dot_limit = 270000,
401 .p2_slow = 2, .p2_fast = 20 },
402 .find_pll = intel_vlv_find_best_pll,
403};
404
405static const intel_limit_t intel_limits_vlv_dp = {
74a4dd2e
VP		 406 .dot = { .min = 25000, .max = 270000 },
407 .vco = { .min = 4000000, .max = 6000000 },
a0c4da24 408 .n = { .min = 1, .max = 7 },
74a4dd2e 409 .m = { .min = 22, .max = 450 },
a0c4da24
JB		 410 .m1 = { .min = 2, .max = 3 },
411 .m2 = { .min = 11, .max = 156 },
412 .p = { .min = 10, .max = 30 },
413 .p1 = { .min = 2, .max = 3 },
414 .p2 = { .dot_limit = 270000,
415 .p2_slow = 2, .p2_fast = 20 },
416 .find_pll = intel_vlv_find_best_pll,
417};
418
57f350b6
JB		 419u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg)
420{
421 unsigned long flags;
422 u32 val = 0;
423
424 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
425 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
426 DRM_ERROR("DPIO idle wait timed out\n");
427 goto out_unlock;
428 }
429
430 I915_WRITE(DPIO_REG, reg);
431 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_READ | DPIO_PORTID |
432 DPIO_BYTE);
433 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
434 DRM_ERROR("DPIO read wait timed out\n");
435 goto out_unlock;
436 }
437 val = I915_READ(DPIO_DATA);
438
439out_unlock:
440 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
441 return val;
442}
443
a0c4da24
JB		 444static void intel_dpio_write(struct drm_i915_private *dev_priv, int reg,
445 u32 val)
446{
447 unsigned long flags;
448
449 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
450 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
451 DRM_ERROR("DPIO idle wait timed out\n");
452 goto out_unlock;
453 }
454
455 I915_WRITE(DPIO_DATA, val);
456 I915_WRITE(DPIO_REG, reg);
457 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_WRITE | DPIO_PORTID |
458 DPIO_BYTE);
459 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100))
460 DRM_ERROR("DPIO write wait timed out\n");
461
462out_unlock:
463 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
464}
465
57f350b6
JB		 466static void vlv_init_dpio(struct drm_device *dev)
467{
468 struct drm_i915_private *dev_priv = dev->dev_private;
469
470 /* Reset the DPIO config */
471 I915_WRITE(DPIO_CTL, 0);
472 POSTING_READ(DPIO_CTL);
473 I915_WRITE(DPIO_CTL, 1);
474 POSTING_READ(DPIO_CTL);
475}
476
618563e3
DV		 477static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
478{
479 DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
480 return 1;
481}
482
483static const struct dmi_system_id intel_dual_link_lvds[] = {
484 {
485 .callback = intel_dual_link_lvds_callback,
486 .ident = "Apple MacBook Pro (Core i5/i7 Series)",
487 .matches = {
488 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
489 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
490 },
491 },
492 { } /* terminating entry */
493};
494
b0354385
TI		 495static bool is_dual_link_lvds(struct drm_i915_private *dev_priv,
496 unsigned int reg)
497{
498 unsigned int val;
499
121d527a
TI		 500 /* use the module option value if specified */
501 if (i915_lvds_channel_mode > 0)
502 return i915_lvds_channel_mode == 2;
503
618563e3
DV		 504 if (dmi_check_system(intel_dual_link_lvds))
505 return true;
506
b0354385
TI		 507 if (dev_priv->lvds_val)
508 val = dev_priv->lvds_val;
509 else {
510 /* BIOS should set the proper LVDS register value at boot, but
511 * in reality, it doesn't set the value when the lid is closed;
512 * we need to check "the value to be set" in VBT when LVDS
513 * register is uninitialized.
514 */
515 val = I915_READ(reg);
14d94a3d 516 if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED)))
b0354385
TI		 517 val = dev_priv->bios_lvds_val;
518 dev_priv->lvds_val = val;
519 }
520 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
521}
522
1b894b59
CW		 523static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
524 int refclk)
2c07245f 525{
b91ad0ec
ZW		 526 struct drm_device *dev = crtc->dev;
527 struct drm_i915_private *dev_priv = dev->dev_private;
2c07245f 528 const intel_limit_t *limit;
b91ad0ec
ZW		 529
530 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
b0354385 531 if (is_dual_link_lvds(dev_priv, PCH_LVDS)) {
b91ad0ec 532 /* LVDS dual channel */
1b894b59 533 if (refclk == 100000)
b91ad0ec
ZW		 534 limit = &intel_limits_ironlake_dual_lvds_100m;
535 else
536 limit = &intel_limits_ironlake_dual_lvds;
537 } else {
1b894b59 538 if (refclk == 100000)
b91ad0ec
ZW		 539 limit = &intel_limits_ironlake_single_lvds_100m;
540 else
541 limit = &intel_limits_ironlake_single_lvds;
542 }
543 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
4547668a
ZY		 544 HAS_eDP)
545 limit = &intel_limits_ironlake_display_port;
2c07245f 546 else
b91ad0ec 547 limit = &intel_limits_ironlake_dac;
2c07245f
ZW		 548
549 return limit;
550}
551
044c7c41
ML		 552static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
553{
554 struct drm_device *dev = crtc->dev;
555 struct drm_i915_private *dev_priv = dev->dev_private;
556 const intel_limit_t *limit;
557
558 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
b0354385 559 if (is_dual_link_lvds(dev_priv, LVDS))
044c7c41 560 /* LVDS with dual channel */
e4b36699 561 limit = &intel_limits_g4x_dual_channel_lvds;
044c7c41
ML		 562 else
563 /* LVDS with dual channel */
e4b36699 564 limit = &intel_limits_g4x_single_channel_lvds;
044c7c41
ML		 565 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
566 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
e4b36699 567 limit = &intel_limits_g4x_hdmi;
044c7c41 568 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
e4b36699 569 limit = &intel_limits_g4x_sdvo;
0206e353 570 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
e4b36699 571 limit = &intel_limits_g4x_display_port;
044c7c41 572 } else /* The option is for other outputs */
e4b36699 573 limit = &intel_limits_i9xx_sdvo;
044c7c41
ML		 574
575 return limit;
576}
577
1b894b59 578static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
79e53945
JB		 579{
580 struct drm_device *dev = crtc->dev;
581 const intel_limit_t *limit;
582
bad720ff 583 if (HAS_PCH_SPLIT(dev))
1b894b59 584 limit = intel_ironlake_limit(crtc, refclk);
2c07245f 585 else if (IS_G4X(dev)) {
044c7c41 586 limit = intel_g4x_limit(crtc);
f2b115e6 587 } else if (IS_PINEVIEW(dev)) {
2177832f 588 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
f2b115e6 589 limit = &intel_limits_pineview_lvds;
2177832f 590 else
f2b115e6 591 limit = &intel_limits_pineview_sdvo;
a0c4da24
JB		 592 } else if (IS_VALLEYVIEW(dev)) {
593 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG))
594 limit = &intel_limits_vlv_dac;
595 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
596 limit = &intel_limits_vlv_hdmi;
597 else
598 limit = &intel_limits_vlv_dp;
a6c45cf0
CW		 599 } else if (!IS_GEN2(dev)) {
600 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
601 limit = &intel_limits_i9xx_lvds;
602 else
603 limit = &intel_limits_i9xx_sdvo;
79e53945
JB		 604 } else {
605 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
e4b36699 606 limit = &intel_limits_i8xx_lvds;
79e53945 607 else
e4b36699 608 limit = &intel_limits_i8xx_dvo;
79e53945
JB		 609 }
610 return limit;
611}
612
f2b115e6
AJ		 613/* m1 is reserved as 0 in Pineview, n is a ring counter */
614static void pineview_clock(int refclk, intel_clock_t *clock)
79e53945 615{
2177832f
SL		 616 clock->m = clock->m2 + 2;
617 clock->p = clock->p1 * clock->p2;
618 clock->vco = refclk * clock->m / clock->n;
619 clock->dot = clock->vco / clock->p;
620}
621
622static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
623{
f2b115e6
AJ		 624 if (IS_PINEVIEW(dev)) {
625 pineview_clock(refclk, clock);
2177832f
SL		 626 return;
627 }
79e53945
JB		 628 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
629 clock->p = clock->p1 * clock->p2;
630 clock->vco = refclk * clock->m / (clock->n + 2);
631 clock->dot = clock->vco / clock->p;
632}
633
79e53945
JB		 634/**
635 * Returns whether any output on the specified pipe is of the specified type
636 */
4ef69c7a 637bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
79e53945 638{
4ef69c7a 639 struct drm_device *dev = crtc->dev;
4ef69c7a
CW		 640 struct intel_encoder *encoder;
641
6c2b7c12
DV		 642 for_each_encoder_on_crtc(dev, crtc, encoder)
643 if (encoder->type == type)
4ef69c7a
CW		 644 return true;
645
646 return false;
79e53945
JB		 647}
648
7c04d1d9 649#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
79e53945
JB		 650/**
651 * Returns whether the given set of divisors are valid for a given refclk with
652 * the given connectors.
653 */
654
1b894b59
CW		 655static bool intel_PLL_is_valid(struct drm_device *dev,
656 const intel_limit_t *limit,
657 const intel_clock_t *clock)
79e53945 658{
79e53945 659 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
0206e353 660 INTELPllInvalid("p1 out of range\n");
79e53945 661 if (clock->p < limit->p.min || limit->p.max < clock->p)
0206e353 662 INTELPllInvalid("p out of range\n");
79e53945 663 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
0206e353 664 INTELPllInvalid("m2 out of range\n");
79e53945 665 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
0206e353 666 INTELPllInvalid("m1 out of range\n");
f2b115e6 667 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
0206e353 668 INTELPllInvalid("m1 <= m2\n");
79e53945 669 if (clock->m < limit->m.min || limit->m.max < clock->m)
0206e353 670 INTELPllInvalid("m out of range\n");
79e53945 671 if (clock->n < limit->n.min || limit->n.max < clock->n)
0206e353 672 INTELPllInvalid("n out of range\n");
79e53945 673 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
0206e353 674 INTELPllInvalid("vco out of range\n");
79e53945
JB		 675 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
676 * connector, etc., rather than just a single range.
677 */
678 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
0206e353 679 INTELPllInvalid("dot out of range\n");
79e53945
JB		 680
681 return true;
682}
683
d4906093
ML		 684static bool
685intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 686 int target, int refclk, intel_clock_t *match_clock,
687 intel_clock_t *best_clock)
d4906093 688
79e53945
JB		 689{
690 struct drm_device *dev = crtc->dev;
691 struct drm_i915_private *dev_priv = dev->dev_private;
692 intel_clock_t clock;
79e53945
JB		 693 int err = target;
694
bc5e5718 695 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
832cc28d 696 (I915_READ(LVDS)) != 0) {
79e53945
JB		 697 /*
698 * For LVDS, if the panel is on, just rely on its current
699 * settings for dual-channel. We haven't figured out how to
700 * reliably set up different single/dual channel state, if we
701 * even can.
702 */
b0354385 703 if (is_dual_link_lvds(dev_priv, LVDS))
79e53945
JB		 704 clock.p2 = limit->p2.p2_fast;
705 else
706 clock.p2 = limit->p2.p2_slow;
707 } else {
708 if (target < limit->p2.dot_limit)
709 clock.p2 = limit->p2.p2_slow;
710 else
711 clock.p2 = limit->p2.p2_fast;
712 }
713
0206e353 714 memset(best_clock, 0, sizeof(*best_clock));
79e53945 715
42158660
ZY		 716 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
717 clock.m1++) {
718 for (clock.m2 = limit->m2.min;
719 clock.m2 <= limit->m2.max; clock.m2++) {
f2b115e6
AJ		 720 /* m1 is always 0 in Pineview */
721 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
42158660
ZY		 722 break;
723 for (clock.n = limit->n.min;
724 clock.n <= limit->n.max; clock.n++) {
725 for (clock.p1 = limit->p1.min;
726 clock.p1 <= limit->p1.max; clock.p1++) {
79e53945
JB		 727 int this_err;
728
2177832f 729 intel_clock(dev, refclk, &clock);
1b894b59
CW		 730 if (!intel_PLL_is_valid(dev, limit,
731 &clock))
79e53945 732 continue;
cec2f356
SP		 733 if (match_clock &&
734 clock.p != match_clock->p)
735 continue;
79e53945
JB		 736
737 this_err = abs(clock.dot - target);
738 if (this_err < err) {
739 *best_clock = clock;
740 err = this_err;
741 }
742 }
743 }
744 }
745 }
746
747 return (err != target);
748}
749
d4906093
ML		 750static bool
751intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 752 int target, int refclk, intel_clock_t *match_clock,
753 intel_clock_t *best_clock)
d4906093
ML		 754{
755 struct drm_device *dev = crtc->dev;
756 struct drm_i915_private *dev_priv = dev->dev_private;
757 intel_clock_t clock;
758 int max_n;
759 bool found;
6ba770dc
AJ		 760 /* approximately equals target * 0.00585 */
761 int err_most = (target >> 8) + (target >> 9);
d4906093
ML		 762 found = false;
763
764 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
4547668a
ZY		 765 int lvds_reg;
766
c619eed4 767 if (HAS_PCH_SPLIT(dev))
4547668a
ZY		 768 lvds_reg = PCH_LVDS;
769 else
770 lvds_reg = LVDS;
771 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
d4906093
ML		 772 LVDS_CLKB_POWER_UP)
773 clock.p2 = limit->p2.p2_fast;
774 else
775 clock.p2 = limit->p2.p2_slow;
776 } else {
777 if (target < limit->p2.dot_limit)
778 clock.p2 = limit->p2.p2_slow;
779 else
780 clock.p2 = limit->p2.p2_fast;
781 }
782
783 memset(best_clock, 0, sizeof(*best_clock));
784 max_n = limit->n.max;
f77f13e2 785 /* based on hardware requirement, prefer smaller n to precision */
d4906093 786 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
f77f13e2 787 /* based on hardware requirement, prefere larger m1,m2 */
d4906093
ML		 788 for (clock.m1 = limit->m1.max;
789 clock.m1 >= limit->m1.min; clock.m1--) {
790 for (clock.m2 = limit->m2.max;
791 clock.m2 >= limit->m2.min; clock.m2--) {
792 for (clock.p1 = limit->p1.max;
793 clock.p1 >= limit->p1.min; clock.p1--) {
794 int this_err;
795
2177832f 796 intel_clock(dev, refclk, &clock);
1b894b59
CW		 797 if (!intel_PLL_is_valid(dev, limit,
798 &clock))
d4906093 799 continue;
cec2f356
SP		 800 if (match_clock &&
801 clock.p != match_clock->p)
802 continue;
1b894b59
CW		 803
804 this_err = abs(clock.dot - target);
d4906093
ML		 805 if (this_err < err_most) {
806 *best_clock = clock;
807 err_most = this_err;
808 max_n = clock.n;
809 found = true;
810 }
811 }
812 }
813 }
814 }
2c07245f
ZW		 815 return found;
816}
817
5eb08b69 818static bool
f2b115e6 819intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 820 int target, int refclk, intel_clock_t *match_clock,
821 intel_clock_t *best_clock)
5eb08b69
ZW		 822{
823 struct drm_device *dev = crtc->dev;
824 intel_clock_t clock;
4547668a 825
5eb08b69
ZW		 826 if (target < 200000) {
827 clock.n = 1;
828 clock.p1 = 2;
829 clock.p2 = 10;
830 clock.m1 = 12;
831 clock.m2 = 9;
832 } else {
833 clock.n = 2;
834 clock.p1 = 1;
835 clock.p2 = 10;
836 clock.m1 = 14;
837 clock.m2 = 8;
838 }
839 intel_clock(dev, refclk, &clock);
840 memcpy(best_clock, &clock, sizeof(intel_clock_t));
841 return true;
842}
843
a4fc5ed6
KP		 844/* DisplayPort has only two frequencies, 162MHz and 270MHz */
845static bool
846intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
cec2f356
SP		 847 int target, int refclk, intel_clock_t *match_clock,
848 intel_clock_t *best_clock)
a4fc5ed6 849{
5eddb70b
CW		 850 intel_clock_t clock;
851 if (target < 200000) {
852 clock.p1 = 2;
853 clock.p2 = 10;
854 clock.n = 2;
855 clock.m1 = 23;
856 clock.m2 = 8;
857 } else {
858 clock.p1 = 1;
859 clock.p2 = 10;
860 clock.n = 1;
861 clock.m1 = 14;
862 clock.m2 = 2;
863 }
864 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
865 clock.p = (clock.p1 * clock.p2);
866 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
867 clock.vco = 0;
868 memcpy(best_clock, &clock, sizeof(intel_clock_t));
869 return true;
a4fc5ed6 870}
a0c4da24
JB		 871static bool
872intel_vlv_find_best_pll(const intel_limit_t *limit, struct drm_crtc *crtc,
873 int target, int refclk, intel_clock_t *match_clock,
874 intel_clock_t *best_clock)
875{
876 u32 p1, p2, m1, m2, vco, bestn, bestm1, bestm2, bestp1, bestp2;
877 u32 m, n, fastclk;
878 u32 updrate, minupdate, fracbits, p;
879 unsigned long bestppm, ppm, absppm;
880 int dotclk, flag;
881
af447bd3 882 flag = 0;
a0c4da24
JB		 883 dotclk = target * 1000;
884 bestppm = 1000000;
885 ppm = absppm = 0;
886 fastclk = dotclk / (2*100);
887 updrate = 0;
888 minupdate = 19200;
889 fracbits = 1;
890 n = p = p1 = p2 = m = m1 = m2 = vco = bestn = 0;
891 bestm1 = bestm2 = bestp1 = bestp2 = 0;
892
893 /* based on hardware requirement, prefer smaller n to precision */
894 for (n = limit->n.min; n <= ((refclk) / minupdate); n++) {
895 updrate = refclk / n;
896 for (p1 = limit->p1.max; p1 > limit->p1.min; p1--) {
897 for (p2 = limit->p2.p2_fast+1; p2 > 0; p2--) {
898 if (p2 > 10)
899 p2 = p2 - 1;
900 p = p1 * p2;
901 /* based on hardware requirement, prefer bigger m1,m2 values */
902 for (m1 = limit->m1.min; m1 <= limit->m1.max; m1++) {
903 m2 = (((2*(fastclk * p * n / m1 )) +
904 refclk) / (2*refclk));
905 m = m1 * m2;
906 vco = updrate * m;
907 if (vco >= limit->vco.min && vco < limit->vco.max) {
908 ppm = 1000000 * ((vco / p) - fastclk) / fastclk;
909 absppm = (ppm > 0) ? ppm : (-ppm);
910 if (absppm < 100 && ((p1 * p2) > (bestp1 * bestp2))) {
911 bestppm = 0;
912 flag = 1;
913 }
914 if (absppm < bestppm - 10) {
915 bestppm = absppm;
916 flag = 1;
917 }
918 if (flag) {
919 bestn = n;
920 bestm1 = m1;
921 bestm2 = m2;
922 bestp1 = p1;
923 bestp2 = p2;
924 flag = 0;
925 }
926 }
927 }
928 }
929 }
930 }
931 best_clock->n = bestn;
932 best_clock->m1 = bestm1;
933 best_clock->m2 = bestm2;
934 best_clock->p1 = bestp1;
935 best_clock->p2 = bestp2;
936
937 return true;
938}
a4fc5ed6 939
a5c961d1
PZ		 940enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
941 enum pipe pipe)
942{
943 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
944 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
945
946 return intel_crtc->cpu_transcoder;
947}
948
a928d536
PZ		 949static void ironlake_wait_for_vblank(struct drm_device *dev, int pipe)
950{
951 struct drm_i915_private *dev_priv = dev->dev_private;
952 u32 frame, frame_reg = PIPEFRAME(pipe);
953
954 frame = I915_READ(frame_reg);
955
956 if (wait_for(I915_READ_NOTRACE(frame_reg) != frame, 50))
957 DRM_DEBUG_KMS("vblank wait timed out\n");
958}
959
9d0498a2
JB		 960/**
961 * intel_wait_for_vblank - wait for vblank on a given pipe
962 * @dev: drm device
963 * @pipe: pipe to wait for
964 *
965 * Wait for vblank to occur on a given pipe. Needed for various bits of
966 * mode setting code.
967 */
968void intel_wait_for_vblank(struct drm_device *dev, int pipe)
79e53945 969{
9d0498a2 970 struct drm_i915_private *dev_priv = dev->dev_private;
9db4a9c7 971 int pipestat_reg = PIPESTAT(pipe);
9d0498a2 972
a928d536
PZ		 973 if (INTEL_INFO(dev)->gen >= 5) {
974 ironlake_wait_for_vblank(dev, pipe);
975 return;
976 }
977
300387c0
CW		 978 /* Clear existing vblank status. Note this will clear any other
979 * sticky status fields as well.
980 *
981 * This races with i915_driver_irq_handler() with the result
982 * that either function could miss a vblank event. Here it is not
983 * fatal, as we will either wait upon the next vblank interrupt or
984 * timeout. Generally speaking intel_wait_for_vblank() is only
985 * called during modeset at which time the GPU should be idle and
986 * should *not* be performing page flips and thus not waiting on
987 * vblanks...
988 * Currently, the result of us stealing a vblank from the irq
989 * handler is that a single frame will be skipped during swapbuffers.
990 */
991 I915_WRITE(pipestat_reg,
992 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
993
9d0498a2 994 /* Wait for vblank interrupt bit to set */
481b6af3
CW		 995 if (wait_for(I915_READ(pipestat_reg) &
996 PIPE_VBLANK_INTERRUPT_STATUS,
997 50))
9d0498a2
JB		 998 DRM_DEBUG_KMS("vblank wait timed out\n");
999}
1000
ab7ad7f6
KP		 1001/*
1002 * intel_wait_for_pipe_off - wait for pipe to turn off
9d0498a2
JB		 1003 * @dev: drm device
1004 * @pipe: pipe to wait for
1005 *
1006 * After disabling a pipe, we can't wait for vblank in the usual way,
1007 * spinning on the vblank interrupt status bit, since we won't actually
1008 * see an interrupt when the pipe is disabled.
1009 *
ab7ad7f6
KP		 1010 * On Gen4 and above:
1011 * wait for the pipe register state bit to turn off
1012 *
1013 * Otherwise:
1014 * wait for the display line value to settle (it usually
1015 * ends up stopping at the start of the next frame).
58e10eb9 1016 *
9d0498a2 1017 */
58e10eb9 1018void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
9d0498a2
JB		 1019{
1020 struct drm_i915_private *dev_priv = dev->dev_private;
702e7a56
PZ		 1021 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1022 pipe);
ab7ad7f6
KP		 1023
1024 if (INTEL_INFO(dev)->gen >= 4) {
702e7a56 1025 int reg = PIPECONF(cpu_transcoder);
ab7ad7f6
KP		 1026
1027 /* Wait for the Pipe State to go off */
58e10eb9
CW		 1028 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
1029 100))
284637d9 1030 WARN(1, "pipe_off wait timed out\n");
ab7ad7f6 1031 } else {
837ba00f 1032 u32 last_line, line_mask;
58e10eb9 1033 int reg = PIPEDSL(pipe);
ab7ad7f6
KP		 1034 unsigned long timeout = jiffies + msecs_to_jiffies(100);
1035
837ba00f
PZ		 1036 if (IS_GEN2(dev))
1037 line_mask = DSL_LINEMASK_GEN2;
1038 else
1039 line_mask = DSL_LINEMASK_GEN3;
1040
ab7ad7f6
KP		 1041 /* Wait for the display line to settle */
1042 do {
837ba00f 1043 last_line = I915_READ(reg) & line_mask;
ab7ad7f6 1044 mdelay(5);
837ba00f 1045 } while (((I915_READ(reg) & line_mask) != last_line) &&
ab7ad7f6
KP		 1046 time_after(timeout, jiffies));
1047 if (time_after(jiffies, timeout))
284637d9 1048 WARN(1, "pipe_off wait timed out\n");
ab7ad7f6 1049 }
79e53945
JB		 1050}
1051
b24e7179
JB		 1052static const char *state_string(bool enabled)
1053{
1054 return enabled ? "on" : "off";
1055}
1056
1057/* Only for pre-ILK configs */
1058static void assert_pll(struct drm_i915_private *dev_priv,
1059 enum pipe pipe, bool state)
1060{
1061 int reg;
1062 u32 val;
1063 bool cur_state;
1064
1065 reg = DPLL(pipe);
1066 val = I915_READ(reg);
1067 cur_state = !!(val & DPLL_VCO_ENABLE);
1068 WARN(cur_state != state,
1069 "PLL state assertion failure (expected %s, current %s)\n",
1070 state_string(state), state_string(cur_state));
1071}
1072#define assert_pll_enabled(d, p) assert_pll(d, p, true)
1073#define assert_pll_disabled(d, p) assert_pll(d, p, false)
1074
040484af
JB		 1075/* For ILK+ */
1076static void assert_pch_pll(struct drm_i915_private *dev_priv,
92b27b08
CW		 1077 struct intel_pch_pll *pll,
1078 struct intel_crtc *crtc,
1079 bool state)
040484af 1080{
040484af
JB		 1081 u32 val;
1082 bool cur_state;
1083
9d82aa17
ED		 1084 if (HAS_PCH_LPT(dev_priv->dev)) {
1085 DRM_DEBUG_DRIVER("LPT detected: skipping PCH PLL test\n");
1086 return;
1087 }
1088
92b27b08
CW		 1089 if (WARN (!pll,
1090 "asserting PCH PLL %s with no PLL\n", state_string(state)))
ee7b9f93 1091 return;
ee7b9f93 1092
92b27b08
CW		 1093 val = I915_READ(pll->pll_reg);
1094 cur_state = !!(val & DPLL_VCO_ENABLE);
1095 WARN(cur_state != state,
1096 "PCH PLL state for reg %x assertion failure (expected %s, current %s), val=%08x\n",
1097 pll->pll_reg, state_string(state), state_string(cur_state), val);
1098
1099 /* Make sure the selected PLL is correctly attached to the transcoder */
1100 if (crtc && HAS_PCH_CPT(dev_priv->dev)) {
d3ccbe86
JB		 1101 u32 pch_dpll;
1102
1103 pch_dpll = I915_READ(PCH_DPLL_SEL);
92b27b08
CW		 1104 cur_state = pll->pll_reg == _PCH_DPLL_B;
1105 if (!WARN(((pch_dpll >> (4 * crtc->pipe)) & 1) != cur_state,
1106 "PLL[%d] not attached to this transcoder %d: %08x\n",
1107 cur_state, crtc->pipe, pch_dpll)) {
1108 cur_state = !!(val >> (4*crtc->pipe + 3));
1109 WARN(cur_state != state,
1110 "PLL[%d] not %s on this transcoder %d: %08x\n",
1111 pll->pll_reg == _PCH_DPLL_B,
1112 state_string(state),
1113 crtc->pipe,
1114 val);
1115 }
d3ccbe86 1116 }
040484af 1117}
92b27b08
CW		 1118#define assert_pch_pll_enabled(d, p, c) assert_pch_pll(d, p, c, true)
1119#define assert_pch_pll_disabled(d, p, c) assert_pch_pll(d, p, c, false)
040484af
JB		 1120
1121static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1122 enum pipe pipe, bool state)
1123{
1124 int reg;
1125 u32 val;
1126 bool cur_state;
ad80a810
PZ		 1127 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1128 pipe);
040484af 1129
bf507ef7
ED		 1130 if (IS_HASWELL(dev_priv->dev)) {
1131 /* On Haswell, DDI is used instead of FDI_TX_CTL */
ad80a810 1132 reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
bf507ef7 1133 val = I915_READ(reg);
ad80a810 1134 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
bf507ef7
ED		 1135 } else {
1136 reg = FDI_TX_CTL(pipe);
1137 val = I915_READ(reg);
1138 cur_state = !!(val & FDI_TX_ENABLE);
1139 }
040484af
JB		 1140 WARN(cur_state != state,
1141 "FDI TX state assertion failure (expected %s, current %s)\n",
1142 state_string(state), state_string(cur_state));
1143}
1144#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1145#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1146
1147static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1148 enum pipe pipe, bool state)
1149{
1150 int reg;
1151 u32 val;
1152 bool cur_state;
1153
59c859d6
ED		 1154 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
1155 DRM_ERROR("Attempting to enable FDI_RX on Haswell pipe > 0\n");
1156 return;
1157 } else {
1158 reg = FDI_RX_CTL(pipe);
1159 val = I915_READ(reg);
1160 cur_state = !!(val & FDI_RX_ENABLE);
1161 }
040484af
JB		 1162 WARN(cur_state != state,
1163 "FDI RX state assertion failure (expected %s, current %s)\n",
1164 state_string(state), state_string(cur_state));
1165}
1166#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1167#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1168
1169static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1170 enum pipe pipe)
1171{
1172 int reg;
1173 u32 val;
1174
1175 /* ILK FDI PLL is always enabled */
1176 if (dev_priv->info->gen == 5)
1177 return;
1178
bf507ef7
ED		 1179 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1180 if (IS_HASWELL(dev_priv->dev))
1181 return;
1182
040484af
JB		 1183 reg = FDI_TX_CTL(pipe);
1184 val = I915_READ(reg);
1185 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1186}
1187
1188static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
1189 enum pipe pipe)
1190{
1191 int reg;
1192 u32 val;
1193
59c859d6
ED		 1194 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
1195 DRM_ERROR("Attempting to enable FDI on Haswell with pipe > 0\n");
1196 return;
1197 }
040484af
JB		 1198 reg = FDI_RX_CTL(pipe);
1199 val = I915_READ(reg);
1200 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
1201}
1202
ea0760cf
JB		 1203static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1204 enum pipe pipe)
1205{
1206 int pp_reg, lvds_reg;
1207 u32 val;
1208 enum pipe panel_pipe = PIPE_A;
0de3b485 1209 bool locked = true;
ea0760cf
JB		 1210
1211 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1212 pp_reg = PCH_PP_CONTROL;
1213 lvds_reg = PCH_LVDS;
1214 } else {
1215 pp_reg = PP_CONTROL;
1216 lvds_reg = LVDS;
1217 }
1218
1219 val = I915_READ(pp_reg);
1220 if (!(val & PANEL_POWER_ON) ||
1221 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
1222 locked = false;
1223
1224 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
1225 panel_pipe = PIPE_B;
1226
1227 WARN(panel_pipe == pipe && locked,
1228 "panel assertion failure, pipe %c regs locked\n",
9db4a9c7 1229 pipe_name(pipe));
ea0760cf
JB		 1230}
1231
b840d907
JB		 1232void assert_pipe(struct drm_i915_private *dev_priv,
1233 enum pipe pipe, bool state)
b24e7179
JB		 1234{
1235 int reg;
1236 u32 val;
63d7bbe9 1237 bool cur_state;
702e7a56
PZ		 1238 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1239 pipe);
b24e7179 1240
8e636784
DV		 1241 /* if we need the pipe A quirk it must be always on */
1242 if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
1243 state = true;
1244
702e7a56 1245 reg = PIPECONF(cpu_transcoder);
b24e7179 1246 val = I915_READ(reg);
63d7bbe9
JB		 1247 cur_state = !!(val & PIPECONF_ENABLE);
1248 WARN(cur_state != state,
1249 "pipe %c assertion failure (expected %s, current %s)\n",
9db4a9c7 1250 pipe_name(pipe), state_string(state), state_string(cur_state));
b24e7179
JB		 1251}
1252
931872fc
CW		 1253static void assert_plane(struct drm_i915_private *dev_priv,
1254 enum plane plane, bool state)
b24e7179
JB		 1255{
1256 int reg;
1257 u32 val;
931872fc 1258 bool cur_state;
b24e7179
JB		 1259
1260 reg = DSPCNTR(plane);
1261 val = I915_READ(reg);
931872fc
CW		 1262 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1263 WARN(cur_state != state,
1264 "plane %c assertion failure (expected %s, current %s)\n",
1265 plane_name(plane), state_string(state), state_string(cur_state));
b24e7179
JB		 1266}
1267
931872fc
CW		 1268#define assert_plane_enabled(d, p) assert_plane(d, p, true)
1269#define assert_plane_disabled(d, p) assert_plane(d, p, false)
1270
b24e7179
JB		 1271static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1272 enum pipe pipe)
1273{
1274 int reg, i;
1275 u32 val;
1276 int cur_pipe;
1277
19ec1358 1278 /* Planes are fixed to pipes on ILK+ */
28c05794
AJ		 1279 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1280 reg = DSPCNTR(pipe);
1281 val = I915_READ(reg);
1282 WARN((val & DISPLAY_PLANE_ENABLE),
1283 "plane %c assertion failure, should be disabled but not\n",
1284 plane_name(pipe));
19ec1358 1285 return;
28c05794 1286 }
19ec1358 1287
b24e7179
JB		 1288 /* Need to check both planes against the pipe */
1289 for (i = 0; i < 2; i++) {
1290 reg = DSPCNTR(i);
1291 val = I915_READ(reg);
1292 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1293 DISPPLANE_SEL_PIPE_SHIFT;
1294 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
9db4a9c7
JB		 1295 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1296 plane_name(i), pipe_name(pipe));
b24e7179
JB		 1297 }
1298}
1299
92f2584a
JB		 1300static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1301{
1302 u32 val;
1303 bool enabled;
1304
9d82aa17
ED		 1305 if (HAS_PCH_LPT(dev_priv->dev)) {
1306 DRM_DEBUG_DRIVER("LPT does not has PCH refclk, skipping check\n");
1307 return;
1308 }
1309
92f2584a
JB		 1310 val = I915_READ(PCH_DREF_CONTROL);
1311 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1312 DREF_SUPERSPREAD_SOURCE_MASK));
1313 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1314}
1315
1316static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
1317 enum pipe pipe)
1318{
1319 int reg;
1320 u32 val;
1321 bool enabled;
1322
1323 reg = TRANSCONF(pipe);
1324 val = I915_READ(reg);
1325 enabled = !!(val & TRANS_ENABLE);
9db4a9c7
JB		 1326 WARN(enabled,
1327 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1328 pipe_name(pipe));
92f2584a
JB		 1329}
1330
4e634389
KP		 1331static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1332 enum pipe pipe, u32 port_sel, u32 val)
f0575e92
KP		 1333{
1334 if ((val & DP_PORT_EN) == 0)
1335 return false;
1336
1337 if (HAS_PCH_CPT(dev_priv->dev)) {
1338 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1339 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1340 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1341 return false;
1342 } else {
1343 if ((val & DP_PIPE_MASK) != (pipe << 30))
1344 return false;
1345 }
1346 return true;
1347}
1348
1519b995
KP		 1349static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1350 enum pipe pipe, u32 val)
1351{
1352 if ((val & PORT_ENABLE) == 0)
1353 return false;
1354
1355 if (HAS_PCH_CPT(dev_priv->dev)) {
1356 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1357 return false;
1358 } else {
1359 if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
1360 return false;
1361 }
1362 return true;
1363}
1364
1365static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1366 enum pipe pipe, u32 val)
1367{
1368 if ((val & LVDS_PORT_EN) == 0)
1369 return false;
1370
1371 if (HAS_PCH_CPT(dev_priv->dev)) {
1372 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1373 return false;
1374 } else {
1375 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1376 return false;
1377 }
1378 return true;
1379}
1380
1381static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1382 enum pipe pipe, u32 val)
1383{
1384 if ((val & ADPA_DAC_ENABLE) == 0)
1385 return false;
1386 if (HAS_PCH_CPT(dev_priv->dev)) {
1387 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1388 return false;
1389 } else {
1390 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1391 return false;
1392 }
1393 return true;
1394}
1395
291906f1 1396static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
f0575e92 1397 enum pipe pipe, int reg, u32 port_sel)
291906f1 1398{
47a05eca 1399 u32 val = I915_READ(reg);
4e634389 1400 WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
291906f1 1401 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
9db4a9c7 1402 reg, pipe_name(pipe));
de9a35ab 1403
75c5da27
DV		 1404 WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
1405 && (val & DP_PIPEB_SELECT),
de9a35ab 1406 "IBX PCH dp port still using transcoder B\n");
291906f1
JB		 1407}
1408
1409static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1410 enum pipe pipe, int reg)
1411{
47a05eca 1412 u32 val = I915_READ(reg);
e9a851ed 1413 WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
23c99e77 1414 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
9db4a9c7 1415 reg, pipe_name(pipe));
de9a35ab 1416
75c5da27
DV		 1417 WARN(HAS_PCH_IBX(dev_priv->dev) && (val & PORT_ENABLE) == 0
1418 && (val & SDVO_PIPE_B_SELECT),
de9a35ab 1419 "IBX PCH hdmi port still using transcoder B\n");
291906f1
JB		 1420}
1421
1422static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1423 enum pipe pipe)
1424{
1425 int reg;
1426 u32 val;
291906f1 1427
f0575e92
KP		 1428 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1429 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1430 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
291906f1
JB		 1431
1432 reg = PCH_ADPA;
1433 val = I915_READ(reg);
e9a851ed 1434 WARN(adpa_pipe_enabled(dev_priv, pipe, val),
291906f1 1435 "PCH VGA enabled on transcoder %c, should be disabled\n",
9db4a9c7 1436 pipe_name(pipe));
291906f1
JB		 1437
1438 reg = PCH_LVDS;
1439 val = I915_READ(reg);
e9a851ed 1440 WARN(lvds_pipe_enabled(dev_priv, pipe, val),
291906f1 1441 "PCH LVDS enabled on transcoder %c, should be disabled\n",
9db4a9c7 1442 pipe_name(pipe));
291906f1
JB		 1443
1444 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1445 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1446 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1447}
1448
63d7bbe9
JB		 1449/**
1450 * intel_enable_pll - enable a PLL
1451 * @dev_priv: i915 private structure
1452 * @pipe: pipe PLL to enable
1453 *
1454 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1455 * make sure the PLL reg is writable first though, since the panel write
1456 * protect mechanism may be enabled.
1457 *
1458 * Note! This is for pre-ILK only.
7434a255
TR		 1459 *
1460 * Unfortunately needed by dvo_ns2501 since the dvo depends on it running.
63d7bbe9 1461 */
a37b9b34 1462static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
63d7bbe9
JB		 1463{
1464 int reg;
1465 u32 val;
1466
1467 /* No really, not for ILK+ */
a0c4da24 1468 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev) && dev_priv->info->gen >= 5);
63d7bbe9
JB		 1469
1470 /* PLL is protected by panel, make sure we can write it */
1471 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1472 assert_panel_unlocked(dev_priv, pipe);
1473
1474 reg = DPLL(pipe);
1475 val = I915_READ(reg);
1476 val |= DPLL_VCO_ENABLE;
1477
1478 /* We do this three times for luck */
1479 I915_WRITE(reg, val);
1480 POSTING_READ(reg);
1481 udelay(150); /* wait for warmup */
1482 I915_WRITE(reg, val);
1483 POSTING_READ(reg);
1484 udelay(150); /* wait for warmup */
1485 I915_WRITE(reg, val);
1486 POSTING_READ(reg);
1487 udelay(150); /* wait for warmup */
1488}
1489
1490/**
1491 * intel_disable_pll - disable a PLL
1492 * @dev_priv: i915 private structure
1493 * @pipe: pipe PLL to disable
1494 *
1495 * Disable the PLL for @pipe, making sure the pipe is off first.
1496 *
1497 * Note! This is for pre-ILK only.
1498 */
1499static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1500{
1501 int reg;
1502 u32 val;
1503
1504 /* Don't disable pipe A or pipe A PLLs if needed */
1505 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1506 return;
1507
1508 /* Make sure the pipe isn't still relying on us */
1509 assert_pipe_disabled(dev_priv, pipe);
1510
1511 reg = DPLL(pipe);
1512 val = I915_READ(reg);
1513 val &= ~DPLL_VCO_ENABLE;
1514 I915_WRITE(reg, val);
1515 POSTING_READ(reg);
1516}
1517
a416edef
ED		 1518/* SBI access */
1519static void
1520intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value)
1521{
1522 unsigned long flags;
1523
1524 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
39fb50f6 1525 if (wait_for((I915_READ(SBI_CTL_STAT) & SBI_BUSY) == 0,
a416edef
ED		 1526 100)) {
1527 DRM_ERROR("timeout waiting for SBI to become ready\n");
1528 goto out_unlock;
1529 }
1530
1531 I915_WRITE(SBI_ADDR,
1532 (reg << 16));
1533 I915_WRITE(SBI_DATA,
1534 value);
1535 I915_WRITE(SBI_CTL_STAT,
1536 SBI_BUSY |
1537 SBI_CTL_OP_CRWR);
1538
39fb50f6 1539 if (wait_for((I915_READ(SBI_CTL_STAT) & (SBI_BUSY | SBI_RESPONSE_FAIL)) == 0,
a416edef
ED		 1540 100)) {
1541 DRM_ERROR("timeout waiting for SBI to complete write transaction\n");
1542 goto out_unlock;
1543 }
1544
1545out_unlock:
1546 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
1547}
1548
1549static u32
1550intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg)
1551{
1552 unsigned long flags;
39fb50f6 1553 u32 value = 0;
a416edef
ED		 1554
1555 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
39fb50f6 1556 if (wait_for((I915_READ(SBI_CTL_STAT) & SBI_BUSY) == 0,
a416edef
ED		 1557 100)) {
1558 DRM_ERROR("timeout waiting for SBI to become ready\n");
1559 goto out_unlock;
1560 }
1561
1562 I915_WRITE(SBI_ADDR,
1563 (reg << 16));
1564 I915_WRITE(SBI_CTL_STAT,
1565 SBI_BUSY |
1566 SBI_CTL_OP_CRRD);
1567
39fb50f6 1568 if (wait_for((I915_READ(SBI_CTL_STAT) & (SBI_BUSY | SBI_RESPONSE_FAIL)) == 0,
a416edef
ED		 1569 100)) {
1570 DRM_ERROR("timeout waiting for SBI to complete read transaction\n");
1571 goto out_unlock;
1572 }
1573
1574 value = I915_READ(SBI_DATA);
1575
1576out_unlock:
1577 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
1578 return value;
1579}
1580
92f2584a
JB		 1581/**
1582 * intel_enable_pch_pll - enable PCH PLL
1583 * @dev_priv: i915 private structure
1584 * @pipe: pipe PLL to enable
1585 *
1586 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1587 * drives the transcoder clock.
1588 */
ee7b9f93 1589static void intel_enable_pch_pll(struct intel_crtc *intel_crtc)
92f2584a 1590{
ee7b9f93 1591 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
48da64a8 1592 struct intel_pch_pll *pll;
92f2584a
JB		 1593 int reg;
1594 u32 val;
1595
48da64a8 1596 /* PCH PLLs only available on ILK, SNB and IVB */
92f2584a 1597 BUG_ON(dev_priv->info->gen < 5);
48da64a8
CW		 1598 pll = intel_crtc->pch_pll;
1599 if (pll == NULL)
1600 return;
1601
1602 if (WARN_ON(pll->refcount == 0))
1603 return;
ee7b9f93
JB		 1604
1605 DRM_DEBUG_KMS("enable PCH PLL %x (active %d, on? %d)for crtc %d\n",
1606 pll->pll_reg, pll->active, pll->on,
1607 intel_crtc->base.base.id);
92f2584a
JB		 1608
1609 /* PCH refclock must be enabled first */
1610 assert_pch_refclk_enabled(dev_priv);
1611
ee7b9f93 1612 if (pll->active++ && pll->on) {
92b27b08 1613 assert_pch_pll_enabled(dev_priv, pll, NULL);
ee7b9f93
JB		 1614 return;
1615 }
1616
1617 DRM_DEBUG_KMS("enabling PCH PLL %x\n", pll->pll_reg);
1618
1619 reg = pll->pll_reg;
92f2584a
JB		 1620 val = I915_READ(reg);
1621 val |= DPLL_VCO_ENABLE;
1622 I915_WRITE(reg, val);
1623 POSTING_READ(reg);
1624 udelay(200);
ee7b9f93
JB		 1625
1626 pll->on = true;
92f2584a
JB		 1627}
1628
ee7b9f93 1629static void intel_disable_pch_pll(struct intel_crtc *intel_crtc)
92f2584a 1630{
ee7b9f93
JB		 1631 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
1632 struct intel_pch_pll *pll = intel_crtc->pch_pll;
92f2584a 1633 int reg;
ee7b9f93 1634 u32 val;
4c609cb8 1635
92f2584a
JB		 1636 /* PCH only available on ILK+ */
1637 BUG_ON(dev_priv->info->gen < 5);
ee7b9f93
JB		 1638 if (pll == NULL)
1639 return;
92f2584a 1640
48da64a8
CW		 1641 if (WARN_ON(pll->refcount == 0))
1642 return;
7a419866 1643
ee7b9f93
JB		 1644 DRM_DEBUG_KMS("disable PCH PLL %x (active %d, on? %d) for crtc %d\n",
1645 pll->pll_reg, pll->active, pll->on,
1646 intel_crtc->base.base.id);
7a419866 1647
48da64a8 1648 if (WARN_ON(pll->active == 0)) {
92b27b08 1649 assert_pch_pll_disabled(dev_priv, pll, NULL);
48da64a8
CW		 1650 return;
1651 }
1652
ee7b9f93 1653 if (--pll->active) {
92b27b08 1654 assert_pch_pll_enabled(dev_priv, pll, NULL);
7a419866 1655 return;
ee7b9f93
JB		 1656 }
1657
1658 DRM_DEBUG_KMS("disabling PCH PLL %x\n", pll->pll_reg);
1659
1660 /* Make sure transcoder isn't still depending on us */
1661 assert_transcoder_disabled(dev_priv, intel_crtc->pipe);
7a419866 1662
ee7b9f93 1663 reg = pll->pll_reg;
92f2584a
JB		 1664 val = I915_READ(reg);
1665 val &= ~DPLL_VCO_ENABLE;
1666 I915_WRITE(reg, val);
1667 POSTING_READ(reg);
1668 udelay(200);
ee7b9f93
JB		 1669
1670 pll->on = false;
92f2584a
JB		 1671}
1672
040484af
JB		 1673static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1674 enum pipe pipe)
1675{
1676 int reg;
5f7f726d 1677 u32 val, pipeconf_val;
7c26e5c6 1678 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
040484af
JB		 1679
1680 /* PCH only available on ILK+ */
1681 BUG_ON(dev_priv->info->gen < 5);
1682
1683 /* Make sure PCH DPLL is enabled */
92b27b08
CW		 1684 assert_pch_pll_enabled(dev_priv,
1685 to_intel_crtc(crtc)->pch_pll,
1686 to_intel_crtc(crtc));
040484af
JB		 1687
1688 /* FDI must be feeding us bits for PCH ports */
1689 assert_fdi_tx_enabled(dev_priv, pipe);
1690 assert_fdi_rx_enabled(dev_priv, pipe);
1691
59c859d6
ED		 1692 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
1693 DRM_ERROR("Attempting to enable transcoder on Haswell with pipe > 0\n");
1694 return;
1695 }
040484af
JB		 1696 reg = TRANSCONF(pipe);
1697 val = I915_READ(reg);
5f7f726d 1698 pipeconf_val = I915_READ(PIPECONF(pipe));
e9bcff5c
JB		 1699
1700 if (HAS_PCH_IBX(dev_priv->dev)) {
1701 /*
1702 * make the BPC in transcoder be consistent with
1703 * that in pipeconf reg.
1704 */
1705 val &= ~PIPE_BPC_MASK;
5f7f726d 1706 val |= pipeconf_val & PIPE_BPC_MASK;
e9bcff5c 1707 }
5f7f726d
PZ		 1708
1709 val &= ~TRANS_INTERLACE_MASK;
1710 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
7c26e5c6
PZ		 1711 if (HAS_PCH_IBX(dev_priv->dev) &&
1712 intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO))
1713 val |= TRANS_LEGACY_INTERLACED_ILK;
1714 else
1715 val |= TRANS_INTERLACED;
5f7f726d
PZ		 1716 else
1717 val |= TRANS_PROGRESSIVE;
1718
040484af
JB		 1719 I915_WRITE(reg, val | TRANS_ENABLE);
1720 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1721 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1722}
1723
1724static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1725 enum pipe pipe)
1726{
1727 int reg;
1728 u32 val;
1729
1730 /* FDI relies on the transcoder */
1731 assert_fdi_tx_disabled(dev_priv, pipe);
1732 assert_fdi_rx_disabled(dev_priv, pipe);
1733
291906f1
JB		 1734 /* Ports must be off as well */
1735 assert_pch_ports_disabled(dev_priv, pipe);
1736
040484af
JB		 1737 reg = TRANSCONF(pipe);
1738 val = I915_READ(reg);
1739 val &= ~TRANS_ENABLE;
1740 I915_WRITE(reg, val);
1741 /* wait for PCH transcoder off, transcoder state */
1742 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
4c9c18c2 1743 DRM_ERROR("failed to disable transcoder %d\n", pipe);
040484af
JB		 1744}
1745
b24e7179 1746/**
309cfea8 1747 * intel_enable_pipe - enable a pipe, asserting requirements
b24e7179
JB		 1748 * @dev_priv: i915 private structure
1749 * @pipe: pipe to enable
040484af 1750 * @pch_port: on ILK+, is this pipe driving a PCH port or not
b24e7179
JB		 1751 *
1752 * Enable @pipe, making sure that various hardware specific requirements
1753 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1754 *
1755 * @pipe should be %PIPE_A or %PIPE_B.
1756 *
1757 * Will wait until the pipe is actually running (i.e. first vblank) before
1758 * returning.
1759 */
040484af
JB		 1760static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1761 bool pch_port)
b24e7179 1762{
702e7a56
PZ		 1763 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1764 pipe);
b24e7179
JB		 1765 int reg;
1766 u32 val;
1767
1768 /*
1769 * A pipe without a PLL won't actually be able to drive bits from
1770 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1771 * need the check.
1772 */
1773 if (!HAS_PCH_SPLIT(dev_priv->dev))
1774 assert_pll_enabled(dev_priv, pipe);
040484af
JB		 1775 else {
1776 if (pch_port) {
1777 /* if driving the PCH, we need FDI enabled */
1778 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1779 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1780 }
1781 /* FIXME: assert CPU port conditions for SNB+ */
1782 }
b24e7179 1783
702e7a56 1784 reg = PIPECONF(cpu_transcoder);
b24e7179 1785 val = I915_READ(reg);
00d70b15
CW		 1786 if (val & PIPECONF_ENABLE)
1787 return;
1788
1789 I915_WRITE(reg, val | PIPECONF_ENABLE);
b24e7179
JB		 1790 intel_wait_for_vblank(dev_priv->dev, pipe);
1791}
1792
1793/**
309cfea8 1794 * intel_disable_pipe - disable a pipe, asserting requirements
b24e7179
JB		 1795 * @dev_priv: i915 private structure
1796 * @pipe: pipe to disable
1797 *
1798 * Disable @pipe, making sure that various hardware specific requirements
1799 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1800 *
1801 * @pipe should be %PIPE_A or %PIPE_B.
1802 *
1803 * Will wait until the pipe has shut down before returning.
1804 */
1805static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1806 enum pipe pipe)
1807{
702e7a56
PZ		 1808 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1809 pipe);
b24e7179
JB		 1810 int reg;
1811 u32 val;
1812
1813 /*
1814 * Make sure planes won't keep trying to pump pixels to us,
1815 * or we might hang the display.
1816 */
1817 assert_planes_disabled(dev_priv, pipe);
1818
1819 /* Don't disable pipe A or pipe A PLLs if needed */
1820 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1821 return;
1822
702e7a56 1823 reg = PIPECONF(cpu_transcoder);
b24e7179 1824 val = I915_READ(reg);
00d70b15
CW		 1825 if ((val & PIPECONF_ENABLE) == 0)
1826 return;
1827
1828 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
b24e7179
JB		 1829 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1830}
1831
d74362c9
KP		 1832/*
1833 * Plane regs are double buffered, going from enabled->disabled needs a
1834 * trigger in order to latch. The display address reg provides this.
1835 */
6f1d69b0 1836void intel_flush_display_plane(struct drm_i915_private *dev_priv,
d74362c9
KP		 1837 enum plane plane)
1838{
1839 I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
1840 I915_WRITE(DSPSURF(plane), I915_READ(DSPSURF(plane)));
1841}
1842
b24e7179
JB		 1843/**
1844 * intel_enable_plane - enable a display plane on a given pipe
1845 * @dev_priv: i915 private structure
1846 * @plane: plane to enable
1847 * @pipe: pipe being fed
1848 *
1849 * Enable @plane on @pipe, making sure that @pipe is running first.
1850 */
1851static void intel_enable_plane(struct drm_i915_private *dev_priv,
1852 enum plane plane, enum pipe pipe)
1853{
1854 int reg;
1855 u32 val;
1856
1857 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1858 assert_pipe_enabled(dev_priv, pipe);
1859
1860 reg = DSPCNTR(plane);
1861 val = I915_READ(reg);
00d70b15
CW		 1862 if (val & DISPLAY_PLANE_ENABLE)
1863 return;
1864
1865 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
d74362c9 1866 intel_flush_display_plane(dev_priv, plane);
b24e7179
JB		 1867 intel_wait_for_vblank(dev_priv->dev, pipe);
1868}
1869
b24e7179
JB		 1870/**
1871 * intel_disable_plane - disable a display plane
1872 * @dev_priv: i915 private structure
1873 * @plane: plane to disable
1874 * @pipe: pipe consuming the data
1875 *
1876 * Disable @plane; should be an independent operation.
1877 */
1878static void intel_disable_plane(struct drm_i915_private *dev_priv,
1879 enum plane plane, enum pipe pipe)
1880{
1881 int reg;
1882 u32 val;
1883
1884 reg = DSPCNTR(plane);
1885 val = I915_READ(reg);
00d70b15
CW		 1886 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1887 return;
1888
1889 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
b24e7179
JB		 1890 intel_flush_display_plane(dev_priv, plane);
1891 intel_wait_for_vblank(dev_priv->dev, pipe);
1892}
1893
127bd2ac 1894int
48b956c5 1895intel_pin_and_fence_fb_obj(struct drm_device *dev,
05394f39 1896 struct drm_i915_gem_object *obj,
919926ae 1897 struct intel_ring_buffer *pipelined)
6b95a207 1898{
ce453d81 1899 struct drm_i915_private *dev_priv = dev->dev_private;
6b95a207
KH		 1900 u32 alignment;
1901 int ret;
1902
05394f39 1903 switch (obj->tiling_mode) {
6b95a207 1904 case I915_TILING_NONE:
534843da
CW		 1905 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1906 alignment = 128 * 1024;
a6c45cf0 1907 else if (INTEL_INFO(dev)->gen >= 4)
534843da
CW		 1908 alignment = 4 * 1024;
1909 else
1910 alignment = 64 * 1024;
6b95a207
KH		 1911 break;
1912 case I915_TILING_X:
1913 /* pin() will align the object as required by fence */
1914 alignment = 0;
1915 break;
1916 case I915_TILING_Y:
1917 /* FIXME: Is this true? */
1918 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1919 return -EINVAL;
1920 default:
1921 BUG();
1922 }
1923
ce453d81 1924 dev_priv->mm.interruptible = false;
2da3b9b9 1925 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
48b956c5 1926 if (ret)
ce453d81 1927 goto err_interruptible;
6b95a207
KH		 1928
1929 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1930 * fence, whereas 965+ only requires a fence if using
1931 * framebuffer compression. For simplicity, we always install
1932 * a fence as the cost is not that onerous.
1933 */
06d98131 1934 ret = i915_gem_object_get_fence(obj);
9a5a53b3
CW		 1935 if (ret)
1936 goto err_unpin;
1690e1eb 1937
9a5a53b3 1938 i915_gem_object_pin_fence(obj);
6b95a207 1939
ce453d81 1940 dev_priv->mm.interruptible = true;
6b95a207 1941 return 0;
48b956c5
CW		 1942
1943err_unpin:
1944 i915_gem_object_unpin(obj);
ce453d81
CW		 1945err_interruptible:
1946 dev_priv->mm.interruptible = true;
48b956c5 1947 return ret;
6b95a207
KH		 1948}
1949
1690e1eb
CW		 1950void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
1951{
1952 i915_gem_object_unpin_fence(obj);
1953 i915_gem_object_unpin(obj);
1954}
1955
c2c75131
DV		 1956/* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
1957 * is assumed to be a power-of-two. */
1958static unsigned long gen4_compute_dspaddr_offset_xtiled(int *x, int *y,
1959 unsigned int bpp,
1960 unsigned int pitch)
1961{
1962 int tile_rows, tiles;
1963
1964 tile_rows = *y / 8;
1965 *y %= 8;
1966 tiles = *x / (512/bpp);
1967 *x %= 512/bpp;
1968
1969 return tile_rows * pitch * 8 + tiles * 4096;
1970}
1971
17638cd6
JB		 1972static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1973 int x, int y)
81255565
JB		 1974{
1975 struct drm_device *dev = crtc->dev;
1976 struct drm_i915_private *dev_priv = dev->dev_private;
1977 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1978 struct intel_framebuffer *intel_fb;
05394f39 1979 struct drm_i915_gem_object *obj;
81255565 1980 int plane = intel_crtc->plane;
e506a0c6 1981 unsigned long linear_offset;
81255565 1982 u32 dspcntr;
5eddb70b 1983 u32 reg;
81255565
JB		 1984
1985 switch (plane) {
1986 case 0:
1987 case 1:
1988 break;
1989 default:
1990 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1991 return -EINVAL;
1992 }
1993
1994 intel_fb = to_intel_framebuffer(fb);
1995 obj = intel_fb->obj;
81255565 1996
5eddb70b
CW		 1997 reg = DSPCNTR(plane);
1998 dspcntr = I915_READ(reg);
81255565
JB		 1999 /* Mask out pixel format bits in case we change it */
2000 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2001 switch (fb->bits_per_pixel) {
2002 case 8:
2003 dspcntr |= DISPPLANE_8BPP;
2004 break;
2005 case 16:
2006 if (fb->depth == 15)
2007 dspcntr |= DISPPLANE_15_16BPP;
2008 else
2009 dspcntr |= DISPPLANE_16BPP;
2010 break;
2011 case 24:
2012 case 32:
2013 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2014 break;
2015 default:
17638cd6 2016 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
81255565
JB		 2017 return -EINVAL;
2018 }
a6c45cf0 2019 if (INTEL_INFO(dev)->gen >= 4) {
05394f39 2020 if (obj->tiling_mode != I915_TILING_NONE)
81255565
JB		 2021 dspcntr |= DISPPLANE_TILED;
2022 else
2023 dspcntr &= ~DISPPLANE_TILED;
2024 }
2025
5eddb70b 2026 I915_WRITE(reg, dspcntr);
81255565 2027
e506a0c6 2028 linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
81255565 2029
c2c75131
DV		 2030 if (INTEL_INFO(dev)->gen >= 4) {
2031 intel_crtc->dspaddr_offset =
2032 gen4_compute_dspaddr_offset_xtiled(&x, &y,
2033 fb->bits_per_pixel / 8,
2034 fb->pitches[0]);
2035 linear_offset -= intel_crtc->dspaddr_offset;
2036 } else {
e506a0c6 2037 intel_crtc->dspaddr_offset = linear_offset;
c2c75131 2038 }
e506a0c6
DV		 2039
2040 DRM_DEBUG_KMS("Writing base %08X %08lX %d %d %d\n",
2041 obj->gtt_offset, linear_offset, x, y, fb->pitches[0]);
01f2c773 2042 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
a6c45cf0 2043 if (INTEL_INFO(dev)->gen >= 4) {
c2c75131
DV		 2044 I915_MODIFY_DISPBASE(DSPSURF(plane),
2045 obj->gtt_offset + intel_crtc->dspaddr_offset);
5eddb70b 2046 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
e506a0c6 2047 I915_WRITE(DSPLINOFF(plane), linear_offset);
5eddb70b 2048 } else
e506a0c6 2049 I915_WRITE(DSPADDR(plane), obj->gtt_offset + linear_offset);
5eddb70b 2050 POSTING_READ(reg);
81255565 2051
17638cd6
JB		 2052 return 0;
2053}
2054
2055static int ironlake_update_plane(struct drm_crtc *crtc,
2056 struct drm_framebuffer *fb, int x, int y)
2057{
2058 struct drm_device *dev = crtc->dev;
2059 struct drm_i915_private *dev_priv = dev->dev_private;
2060 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2061 struct intel_framebuffer *intel_fb;
2062 struct drm_i915_gem_object *obj;
2063 int plane = intel_crtc->plane;
e506a0c6 2064 unsigned long linear_offset;
17638cd6
JB		 2065 u32 dspcntr;
2066 u32 reg;
2067
2068 switch (plane) {
2069 case 0:
2070 case 1:
27f8227b 2071 case 2:
17638cd6
JB		 2072 break;
2073 default:
2074 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
2075 return -EINVAL;
2076 }
2077
2078 intel_fb = to_intel_framebuffer(fb);
2079 obj = intel_fb->obj;
2080
2081 reg = DSPCNTR(plane);
2082 dspcntr = I915_READ(reg);
2083 /* Mask out pixel format bits in case we change it */
2084 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2085 switch (fb->bits_per_pixel) {
2086 case 8:
2087 dspcntr |= DISPPLANE_8BPP;
2088 break;
2089 case 16:
2090 if (fb->depth != 16)
2091 return -EINVAL;
2092
2093 dspcntr |= DISPPLANE_16BPP;
2094 break;
2095 case 24:
2096 case 32:
2097 if (fb->depth == 24)
2098 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2099 else if (fb->depth == 30)
2100 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
2101 else
2102 return -EINVAL;
2103 break;
2104 default:
2105 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
2106 return -EINVAL;
2107 }
2108
2109 if (obj->tiling_mode != I915_TILING_NONE)
2110 dspcntr |= DISPPLANE_TILED;
2111 else
2112 dspcntr &= ~DISPPLANE_TILED;
2113
2114 /* must disable */
2115 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2116
2117 I915_WRITE(reg, dspcntr);
2118
e506a0c6 2119 linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
c2c75131
DV		 2120 intel_crtc->dspaddr_offset =
2121 gen4_compute_dspaddr_offset_xtiled(&x, &y,
2122 fb->bits_per_pixel / 8,
2123 fb->pitches[0]);
2124 linear_offset -= intel_crtc->dspaddr_offset;
17638cd6 2125
e506a0c6
DV		 2126 DRM_DEBUG_KMS("Writing base %08X %08lX %d %d %d\n",
2127 obj->gtt_offset, linear_offset, x, y, fb->pitches[0]);
01f2c773 2128 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
c2c75131
DV		 2129 I915_MODIFY_DISPBASE(DSPSURF(plane),
2130 obj->gtt_offset + intel_crtc->dspaddr_offset);
17638cd6 2131 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
e506a0c6 2132 I915_WRITE(DSPLINOFF(plane), linear_offset);
17638cd6
JB		 2133 POSTING_READ(reg);
2134
2135 return 0;
2136}
2137
2138/* Assume fb object is pinned & idle & fenced and just update base pointers */
2139static int
2140intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2141 int x, int y, enum mode_set_atomic state)
2142{
2143 struct drm_device *dev = crtc->dev;
2144 struct drm_i915_private *dev_priv = dev->dev_private;
17638cd6 2145
6b8e6ed0
CW		 2146 if (dev_priv->display.disable_fbc)
2147 dev_priv->display.disable_fbc(dev);
3dec0095 2148 intel_increase_pllclock(crtc);
81255565 2149
6b8e6ed0 2150 return dev_priv->display.update_plane(crtc, fb, x, y);
81255565
JB		 2151}
2152
14667a4b
CW		 2153static int
2154intel_finish_fb(struct drm_framebuffer *old_fb)
2155{
2156 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
2157 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
2158 bool was_interruptible = dev_priv->mm.interruptible;
2159 int ret;
2160
2161 wait_event(dev_priv->pending_flip_queue,
2162 atomic_read(&dev_priv->mm.wedged) ||
2163 atomic_read(&obj->pending_flip) == 0);
2164
2165 /* Big Hammer, we also need to ensure that any pending
2166 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
2167 * current scanout is retired before unpinning the old
2168 * framebuffer.
2169 *
2170 * This should only fail upon a hung GPU, in which case we
2171 * can safely continue.
2172 */
2173 dev_priv->mm.interruptible = false;
2174 ret = i915_gem_object_finish_gpu(obj);
2175 dev_priv->mm.interruptible = was_interruptible;
2176
2177 return ret;
2178}
2179
5c3b82e2 2180static int
3c4fdcfb 2181intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
94352cf9 2182 struct drm_framebuffer *fb)
79e53945
JB		 2183{
2184 struct drm_device *dev = crtc->dev;
6b8e6ed0 2185 struct drm_i915_private *dev_priv = dev->dev_private;
79e53945
JB		 2186 struct drm_i915_master_private *master_priv;
2187 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
94352cf9 2188 struct drm_framebuffer *old_fb;
5c3b82e2 2189 int ret;
79e53945
JB		 2190
2191 /* no fb bound */
94352cf9 2192 if (!fb) {
a5071c2f 2193 DRM_ERROR("No FB bound\n");
5c3b82e2
CW		 2194 return 0;
2195 }
2196
5826eca5
ED		 2197 if(intel_crtc->plane > dev_priv->num_pipe) {
2198 DRM_ERROR("no plane for crtc: plane %d, num_pipes %d\n",
2199 intel_crtc->plane,
2200 dev_priv->num_pipe);
5c3b82e2 2201 return -EINVAL;
79e53945
JB		 2202 }
2203
5c3b82e2 2204 mutex_lock(&dev->struct_mutex);
265db958 2205 ret = intel_pin_and_fence_fb_obj(dev,
94352cf9 2206 to_intel_framebuffer(fb)->obj,
919926ae 2207 NULL);
5c3b82e2
CW		 2208 if (ret != 0) {
2209 mutex_unlock(&dev->struct_mutex);
a5071c2f 2210 DRM_ERROR("pin & fence failed\n");
5c3b82e2
CW		 2211 return ret;
2212 }
79e53945 2213
94352cf9
DV		 2214 if (crtc->fb)
2215 intel_finish_fb(crtc->fb);
265db958 2216
94352cf9 2217 ret = dev_priv->display.update_plane(crtc, fb, x, y);
4e6cfefc 2218 if (ret) {
94352cf9 2219 intel_unpin_fb_obj(to_intel_framebuffer(fb)->obj);
5c3b82e2 2220 mutex_unlock(&dev->struct_mutex);
a5071c2f 2221 DRM_ERROR("failed to update base address\n");
4e6cfefc 2222 return ret;
79e53945 2223 }
3c4fdcfb 2224
94352cf9
DV		 2225 old_fb = crtc->fb;
2226 crtc->fb = fb;
6c4c86f5
DV		 2227 crtc->x = x;
2228 crtc->y = y;
94352cf9 2229
b7f1de28
CW		 2230 if (old_fb) {
2231 intel_wait_for_vblank(dev, intel_crtc->pipe);
1690e1eb 2232 intel_unpin_fb_obj(to_intel_framebuffer(old_fb)->obj);
b7f1de28 2233 }
652c393a 2234
6b8e6ed0 2235 intel_update_fbc(dev);
5c3b82e2 2236 mutex_unlock(&dev->struct_mutex);
79e53945
JB		 2237
2238 if (!dev->primary->master)
5c3b82e2 2239 return 0;
79e53945
JB		 2240
2241 master_priv = dev->primary->master->driver_priv;
2242 if (!master_priv->sarea_priv)
5c3b82e2 2243 return 0;
79e53945 2244
265db958 2245 if (intel_crtc->pipe) {
79e53945
JB		 2246 master_priv->sarea_priv->pipeB_x = x;
2247 master_priv->sarea_priv->pipeB_y = y;
5c3b82e2
CW		 2248 } else {
2249 master_priv->sarea_priv->pipeA_x = x;
2250 master_priv->sarea_priv->pipeA_y = y;
79e53945 2251 }
5c3b82e2
CW		 2252
2253 return 0;
79e53945
JB		 2254}
2255
5eddb70b 2256static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
32f9d658
ZW		 2257{
2258 struct drm_device *dev = crtc->dev;
2259 struct drm_i915_private *dev_priv = dev->dev_private;
2260 u32 dpa_ctl;
2261
28c97730 2262 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
32f9d658
ZW		 2263 dpa_ctl = I915_READ(DP_A);
2264 dpa_ctl &= ~DP_PLL_FREQ_MASK;
2265
2266 if (clock < 200000) {
2267 u32 temp;
2268 dpa_ctl |= DP_PLL_FREQ_160MHZ;
2269 /* workaround for 160Mhz:
2270 1) program 0x4600c bits 15:0 = 0x8124
2271 2) program 0x46010 bit 0 = 1
2272 3) program 0x46034 bit 24 = 1
2273 4) program 0x64000 bit 14 = 1
2274 */
2275 temp = I915_READ(0x4600c);
2276 temp &= 0xffff0000;
2277 I915_WRITE(0x4600c, temp | 0x8124);
2278
2279 temp = I915_READ(0x46010);
2280 I915_WRITE(0x46010, temp | 1);
2281
2282 temp = I915_READ(0x46034);
2283 I915_WRITE(0x46034, temp | (1 << 24));
2284 } else {
2285 dpa_ctl |= DP_PLL_FREQ_270MHZ;
2286 }
2287 I915_WRITE(DP_A, dpa_ctl);
2288
5eddb70b 2289 POSTING_READ(DP_A);
32f9d658
ZW		 2290 udelay(500);
2291}
2292
5e84e1a4
ZW		 2293static void intel_fdi_normal_train(struct drm_crtc *crtc)
2294{
2295 struct drm_device *dev = crtc->dev;
2296 struct drm_i915_private *dev_priv = dev->dev_private;
2297 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2298 int pipe = intel_crtc->pipe;
2299 u32 reg, temp;
2300
2301 /* enable normal train */
2302 reg = FDI_TX_CTL(pipe);
2303 temp = I915_READ(reg);
61e499bf 2304 if (IS_IVYBRIDGE(dev)) {
357555c0
JB		 2305 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2306 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
61e499bf
KP		 2307 } else {
2308 temp &= ~FDI_LINK_TRAIN_NONE;
2309 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
357555c0 2310 }
5e84e1a4
ZW		 2311 I915_WRITE(reg, temp);
2312
2313 reg = FDI_RX_CTL(pipe);
2314 temp = I915_READ(reg);
2315 if (HAS_PCH_CPT(dev)) {
2316 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2317 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2318 } else {
2319 temp &= ~FDI_LINK_TRAIN_NONE;
2320 temp |= FDI_LINK_TRAIN_NONE;
2321 }
2322 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2323
2324 /* wait one idle pattern time */
2325 POSTING_READ(reg);
2326 udelay(1000);
357555c0
JB		 2327
2328 /* IVB wants error correction enabled */
2329 if (IS_IVYBRIDGE(dev))
2330 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2331 FDI_FE_ERRC_ENABLE);
5e84e1a4
ZW		 2332}
2333
291427f5
JB		 2334static void cpt_phase_pointer_enable(struct drm_device *dev, int pipe)
2335{
2336 struct drm_i915_private *dev_priv = dev->dev_private;
2337 u32 flags = I915_READ(SOUTH_CHICKEN1);
2338
2339 flags |= FDI_PHASE_SYNC_OVR(pipe);
2340 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
2341 flags |= FDI_PHASE_SYNC_EN(pipe);
2342 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
2343 POSTING_READ(SOUTH_CHICKEN1);
2344}
2345
8db9d77b
ZW		 2346/* The FDI link training functions for ILK/Ibexpeak. */
2347static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2348{
2349 struct drm_device *dev = crtc->dev;
2350 struct drm_i915_private *dev_priv = dev->dev_private;
2351 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2352 int pipe = intel_crtc->pipe;
0fc932b8 2353 int plane = intel_crtc->plane;
5eddb70b 2354 u32 reg, temp, tries;
8db9d77b 2355
0fc932b8
JB		 2356 /* FDI needs bits from pipe & plane first */
2357 assert_pipe_enabled(dev_priv, pipe);
2358 assert_plane_enabled(dev_priv, plane);
2359
e1a44743
AJ		 2360 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2361 for train result */
5eddb70b
CW		 2362 reg = FDI_RX_IMR(pipe);
2363 temp = I915_READ(reg);
e1a44743
AJ		 2364 temp &= ~FDI_RX_SYMBOL_LOCK;
2365 temp &= ~FDI_RX_BIT_LOCK;
5eddb70b
CW		 2366 I915_WRITE(reg, temp);
2367 I915_READ(reg);
e1a44743
AJ		 2368 udelay(150);
2369
8db9d77b 2370 /* enable CPU FDI TX and PCH FDI RX */
5eddb70b
CW		 2371 reg = FDI_TX_CTL(pipe);
2372 temp = I915_READ(reg);
77ffb597
AJ		 2373 temp &= ~(7 << 19);
2374 temp |= (intel_crtc->fdi_lanes - 1) << 19;
8db9d77b
ZW		 2375 temp &= ~FDI_LINK_TRAIN_NONE;
2376 temp |= FDI_LINK_TRAIN_PATTERN_1;
5eddb70b 2377 I915_WRITE(reg, temp | FDI_TX_ENABLE);
8db9d77b 2378
5eddb70b
CW		 2379 reg = FDI_RX_CTL(pipe);
2380 temp = I915_READ(reg);
8db9d77b
ZW		 2381 temp &= ~FDI_LINK_TRAIN_NONE;
2382 temp |= FDI_LINK_TRAIN_PATTERN_1;
5eddb70b
CW		 2383 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2384
2385 POSTING_READ(reg);
8db9d77b
ZW		 2386 udelay(150);
2387
5b2adf89 2388 /* Ironlake workaround, enable clock pointer after FDI enable*/
6f06ce18
JB		 2389 if (HAS_PCH_IBX(dev)) {
2390 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2391 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2392 FDI_RX_PHASE_SYNC_POINTER_EN);
2393 }
5b2adf89 2394
5eddb70b 2395 reg = FDI_RX_IIR(pipe);
e1a44743 2396 for (tries = 0; tries < 5; tries++) {
5eddb70b 2397 temp = I915_READ(reg);
8db9d77b
ZW		 2398 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2399
2400 if ((temp & FDI_RX_BIT_LOCK)) {
2401 DRM_DEBUG_KMS("FDI train 1 done.\n");
5eddb70b 2402 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
8db9d77b
ZW		 2403 break;
2404 }
8db9d77b 2405 }
e1a44743 2406 if (tries == 5)
5eddb70b 2407 DRM_ERROR("FDI train 1 fail!\n");
8db9d77b
ZW		 2408
2409 /* Train 2 */
5eddb70b
CW		 2410 reg = FDI_TX_CTL(pipe);
2411 temp = I915_READ(reg);
8db9d77b
ZW		 2412 temp &= ~FDI_LINK_TRAIN_NONE;
2413 temp |= FDI_LINK_TRAIN_PATTERN_2;
5eddb70b 2414 I915_WRITE(reg, temp);
8db9d77b 2415
5eddb70b
CW		 2416 reg = FDI_RX_CTL(pipe);
2417 temp = I915_READ(reg);
8db9d77b
ZW		 2418 temp &= ~FDI_LINK_TRAIN_NONE;
2419 temp |= FDI_LINK_TRAIN_PATTERN_2;
5eddb70b 2420 I915_WRITE(reg, temp);
8db9d77b 2421
5eddb70b
CW		 2422 POSTING_READ(reg);
2423 udelay(150);
8db9d77b 2424
5eddb70b 2425 reg = FDI_RX_IIR(pipe);
e1a44743 2426 for (tries = 0; tries < 5; tries++) {
5eddb70b 2427 temp = I915_READ(reg);
8db9d77b
ZW		 2428 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2429
2430 if (temp & FDI_RX_SYMBOL_LOCK) {
5eddb70b 2431 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
8db9d77b
ZW		 2432 DRM_DEBUG_KMS("FDI train 2 done.\n");
2433 break;
2434 }
8db9d77b 2435 }
e1a44743 2436 if (tries == 5)
5eddb70b 2437 DRM_ERROR("FDI train 2 fail!\n");
8db9d77b
ZW		 2438
2439 DRM_DEBUG_KMS("FDI train done\n");
5c5313c8 2440
8db9d77b
ZW		 2441}
2442
0206e353 2443static const int snb_b_fdi_train_param[] = {
8db9d77b
ZW		 2444 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2445 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2446 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2447 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2448};
2449
2450/* The FDI link training functions for SNB/Cougarpoint. */
2451static void gen6_fdi_link_train(struct drm_crtc *crtc)
2452{
2453 struct drm_device *dev = crtc->dev;
2454 struct drm_i915_private *dev_priv = dev->dev_private;
2455 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2456 int pipe = intel_crtc->pipe;
fa37d39e 2457 u32 reg, temp, i, retry;
8db9d77b 2458
e1a44743
AJ		 2459 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2460 for train result */
5eddb70b
CW		 2461 reg = FDI_RX_IMR(pipe);
2462 temp = I915_READ(reg);
e1a44743
AJ		 2463 temp &= ~FDI_RX_SYMBOL_LOCK;
2464 temp &= ~FDI_RX_BIT_LOCK;
5eddb70b
CW		 2465 I915_WRITE(reg, temp);
2466
2467 POSTING_READ(reg);
e1a44743
AJ		 2468 udelay(150);
2469
8db9d77b 2470 /* enable CPU FDI TX and PCH FDI RX */
5eddb70b
CW		 2471 reg = FDI_TX_CTL(pipe);
2472 temp = I915_READ(reg);
77ffb597
AJ		 2473 temp &= ~(7 << 19);
2474 temp |= (intel_crtc->fdi_lanes - 1) << 19;
8db9d77b
ZW		 2475 temp &= ~FDI_LINK_TRAIN_NONE;
2476 temp |= FDI_LINK_TRAIN_PATTERN_1;
2477 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2478 /* SNB-B */
2479 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
5eddb70b 2480 I915_WRITE(reg, temp | FDI_TX_ENABLE);
8db9d77b 2481
5eddb70b
CW		 2482 reg = FDI_RX_CTL(pipe);
2483 temp = I915_READ(reg);
8db9d77b
ZW		 2484 if (HAS_PCH_CPT(dev)) {
2485 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2486 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2487 } else {
2488 temp &= ~FDI_LINK_TRAIN_NONE;
2489 temp |= FDI_LINK_TRAIN_PATTERN_1;
2490 }
5eddb70b
CW		 2491 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2492
2493 POSTING_READ(reg);
8db9d77b
ZW		 2494 udelay(150);
2495
291427f5
JB		 2496 if (HAS_PCH_CPT(dev))
2497 cpt_phase_pointer_enable(dev, pipe);
2498
0206e353 2499 for (i = 0; i < 4; i++) {
5eddb70b
CW		 2500 reg = FDI_TX_CTL(pipe);
2501 temp = I915_READ(reg);
8db9d77b
ZW		 2502 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2503 temp |= snb_b_fdi_train_param[i];
5eddb70b
CW		 2504 I915_WRITE(reg, temp);
2505
2506 POSTING_READ(reg);
8db9d77b
ZW		 2507 udelay(500);
2508
fa37d39e
SP		 2509 for (retry = 0; retry < 5; retry++) {
2510 reg = FDI_RX_IIR(pipe);
2511 temp = I915_READ(reg);
2512 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2513 if (temp & FDI_RX_BIT_LOCK) {
2514 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2515 DRM_DEBUG_KMS("FDI train 1 done.\n");
2516 break;
2517 }
2518 udelay(50);
8db9d77b 2519 }
fa37d39e
SP		 2520 if (retry < 5)
2521 break;
8db9d77b
ZW		 2522 }
2523 if (i == 4)
5eddb70b 2524 DRM_ERROR("FDI train 1 fail!\n");
8db9d77b
ZW		 2525
2526 /* Train 2 */
5eddb70b
CW		 2527 reg = FDI_TX_CTL(pipe);
2528 temp = I915_READ(reg);
8db9d77b
ZW		 2529 temp &= ~FDI_LINK_TRAIN_NONE;
2530 temp |= FDI_LINK_TRAIN_PATTERN_2;
2531 if (IS_GEN6(dev)) {
2532 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2533 /* SNB-B */
2534 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2535 }
5eddb70b 2536 I915_WRITE(reg, temp);
8db9d77b 2537
5eddb70b
CW		 2538 reg = FDI_RX_CTL(pipe);
2539 temp = I915_READ(reg);
8db9d77b
ZW		 2540 if (HAS_PCH_CPT(dev)) {
2541 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2542 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2543 } else {
2544 temp &= ~FDI_LINK_TRAIN_NONE;
2545 temp |= FDI_LINK_TRAIN_PATTERN_2;
2546 }
5eddb70b
CW		 2547 I915_WRITE(reg, temp);
2548
2549 POSTING_READ(reg);
8db9d77b
ZW		 2550 udelay(150);
2551
0206e353 2552 for (i = 0; i < 4; i++) {
5eddb70b
CW		 2553 reg = FDI_TX_CTL(pipe);
2554 temp = I915_READ(reg);
8db9d77b
ZW		 2555 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2556 temp |= snb_b_fdi_train_param[i];
5eddb70b
CW		 2557 I915_WRITE(reg, temp);
2558
2559 POSTING_READ(reg);
8db9d77b
ZW		 2560 udelay(500);
2561
fa37d39e
SP		 2562 for (retry = 0; retry < 5; retry++) {
2563 reg = FDI_RX_IIR(pipe);
2564 temp = I915_READ(reg);
2565 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2566 if (temp & FDI_RX_SYMBOL_LOCK) {
2567 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2568 DRM_DEBUG_KMS("FDI train 2 done.\n");
2569 break;
2570 }
2571 udelay(50);
8db9d77b 2572 }
fa37d39e
SP		 2573 if (retry < 5)
2574 break;
8db9d77b
ZW		 2575 }
2576 if (i == 4)
5eddb70b 2577 DRM_ERROR("FDI train 2 fail!\n");
8db9d77b
ZW		 2578
2579 DRM_DEBUG_KMS("FDI train done.\n");
2580}
2581
357555c0
JB		 2582/* Manual link training for Ivy Bridge A0 parts */
2583static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2584{
2585 struct drm_device *dev = crtc->dev;
2586 struct drm_i915_private *dev_priv = dev->dev_private;
2587 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2588 int pipe = intel_crtc->pipe;
2589 u32 reg, temp, i;
2590
2591 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2592 for train result */
2593 reg = FDI_RX_IMR(pipe);
2594 temp = I915_READ(reg);
2595 temp &= ~FDI_RX_SYMBOL_LOCK;
2596 temp &= ~FDI_RX_BIT_LOCK;
2597 I915_WRITE(reg, temp);
2598
2599 POSTING_READ(reg);
2600 udelay(150);
2601
2602 /* enable CPU FDI TX and PCH FDI RX */
2603 reg = FDI_TX_CTL(pipe);
2604 temp = I915_READ(reg);
2605 temp &= ~(7 << 19);
2606 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2607 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2608 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2609 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2610 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
c4f9c4c2 2611 temp |= FDI_COMPOSITE_SYNC;
357555c0
JB		 2612 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2613
2614 reg = FDI_RX_CTL(pipe);
2615 temp = I915_READ(reg);
2616 temp &= ~FDI_LINK_TRAIN_AUTO;
2617 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2618 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
c4f9c4c2 2619 temp |= FDI_COMPOSITE_SYNC;
357555c0
JB		 2620 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2621
2622 POSTING_READ(reg);
2623 udelay(150);
2624
291427f5
JB		 2625 if (HAS_PCH_CPT(dev))
2626 cpt_phase_pointer_enable(dev, pipe);
2627
0206e353 2628 for (i = 0; i < 4; i++) {
357555c0
JB		 2629 reg = FDI_TX_CTL(pipe);
2630 temp = I915_READ(reg);
2631 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2632 temp |= snb_b_fdi_train_param[i];
2633 I915_WRITE(reg, temp);
2634
2635 POSTING_READ(reg);
2636 udelay(500);
2637
2638 reg = FDI_RX_IIR(pipe);
2639 temp = I915_READ(reg);
2640 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2641
2642 if (temp & FDI_RX_BIT_LOCK ||
2643 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2644 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2645 DRM_DEBUG_KMS("FDI train 1 done.\n");
2646 break;
2647 }
2648 }
2649 if (i == 4)
2650 DRM_ERROR("FDI train 1 fail!\n");
2651
2652 /* Train 2 */
2653 reg = FDI_TX_CTL(pipe);
2654 temp = I915_READ(reg);
2655 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2656 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2657 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2658 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2659 I915_WRITE(reg, temp);
2660
2661 reg = FDI_RX_CTL(pipe);
2662 temp = I915_READ(reg);
2663 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2664 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2665 I915_WRITE(reg, temp);
2666
2667 POSTING_READ(reg);
2668 udelay(150);
2669
0206e353 2670 for (i = 0; i < 4; i++) {
357555c0
JB		 2671 reg = FDI_TX_CTL(pipe);
2672 temp = I915_READ(reg);
2673 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2674 temp |= snb_b_fdi_train_param[i];
2675 I915_WRITE(reg, temp);
2676
2677 POSTING_READ(reg);
2678 udelay(500);
2679
2680 reg = FDI_RX_IIR(pipe);
2681 temp = I915_READ(reg);
2682 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2683
2684 if (temp & FDI_RX_SYMBOL_LOCK) {
2685 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2686 DRM_DEBUG_KMS("FDI train 2 done.\n");
2687 break;
2688 }
2689 }
2690 if (i == 4)
2691 DRM_ERROR("FDI train 2 fail!\n");
2692
2693 DRM_DEBUG_KMS("FDI train done.\n");
2694}
2695
88cefb6c 2696static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
2c07245f 2697{
88cefb6c 2698 struct drm_device *dev = intel_crtc->base.dev;
2c07245f 2699 struct drm_i915_private *dev_priv = dev->dev_private;
2c07245f 2700 int pipe = intel_crtc->pipe;
5eddb70b 2701 u32 reg, temp;
79e53945 2702
c64e311e 2703 /* Write the TU size bits so error detection works */
5eddb70b
CW		 2704 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2705 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
c64e311e 2706
c98e9dcf 2707 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
5eddb70b
CW		 2708 reg = FDI_RX_CTL(pipe);
2709 temp = I915_READ(reg);
2710 temp &= ~((0x7 << 19) | (0x7 << 16));
c98e9dcf 2711 temp |= (intel_crtc->fdi_lanes - 1) << 19;
5eddb70b
CW		 2712 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2713 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2714
2715 POSTING_READ(reg);
c98e9dcf
JB		 2716 udelay(200);
2717
2718 /* Switch from Rawclk to PCDclk */
5eddb70b
CW		 2719 temp = I915_READ(reg);
2720 I915_WRITE(reg, temp | FDI_PCDCLK);
2721
2722 POSTING_READ(reg);
c98e9dcf
JB		 2723 udelay(200);
2724
bf507ef7
ED		 2725 /* On Haswell, the PLL configuration for ports and pipes is handled
2726 * separately, as part of DDI setup */
2727 if (!IS_HASWELL(dev)) {
2728 /* Enable CPU FDI TX PLL, always on for Ironlake */
2729 reg = FDI_TX_CTL(pipe);
2730 temp = I915_READ(reg);
2731 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2732 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
5eddb70b 2733
bf507ef7
ED		 2734 POSTING_READ(reg);
2735 udelay(100);
2736 }
6be4a607 2737 }
0e23b99d
JB		 2738}
2739
88cefb6c
DV		 2740static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
2741{
2742 struct drm_device *dev = intel_crtc->base.dev;
2743 struct drm_i915_private *dev_priv = dev->dev_private;
2744 int pipe = intel_crtc->pipe;
2745 u32 reg, temp;
2746
2747 /* Switch from PCDclk to Rawclk */
2748 reg = FDI_RX_CTL(pipe);
2749 temp = I915_READ(reg);
2750 I915_WRITE(reg, temp & ~FDI_PCDCLK);
2751
2752 /* Disable CPU FDI TX PLL */
2753 reg = FDI_TX_CTL(pipe);
2754 temp = I915_READ(reg);
2755 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
2756
2757 POSTING_READ(reg);
2758 udelay(100);
2759
2760 reg = FDI_RX_CTL(pipe);
2761 temp = I915_READ(reg);
2762 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
2763
2764 /* Wait for the clocks to turn off. */
2765 POSTING_READ(reg);
2766 udelay(100);
2767}
2768
291427f5
JB		 2769static void cpt_phase_pointer_disable(struct drm_device *dev, int pipe)
2770{
2771 struct drm_i915_private *dev_priv = dev->dev_private;
2772 u32 flags = I915_READ(SOUTH_CHICKEN1);
2773
2774 flags &= ~(FDI_PHASE_SYNC_EN(pipe));
2775 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to disable... */
2776 flags &= ~(FDI_PHASE_SYNC_OVR(pipe));
2777 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to lock */
2778 POSTING_READ(SOUTH_CHICKEN1);
2779}
0fc932b8
JB		 2780static void ironlake_fdi_disable(struct drm_crtc *crtc)
2781{
2782 struct drm_device *dev = crtc->dev;
2783 struct drm_i915_private *dev_priv = dev->dev_private;
2784 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2785 int pipe = intel_crtc->pipe;
2786 u32 reg, temp;
2787
2788 /* disable CPU FDI tx and PCH FDI rx */
2789 reg = FDI_TX_CTL(pipe);
2790 temp = I915_READ(reg);
2791 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2792 POSTING_READ(reg);
2793
2794 reg = FDI_RX_CTL(pipe);
2795 temp = I915_READ(reg);
2796 temp &= ~(0x7 << 16);
2797 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2798 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2799
2800 POSTING_READ(reg);
2801 udelay(100);
2802
2803 /* Ironlake workaround, disable clock pointer after downing FDI */
6f06ce18
JB		 2804 if (HAS_PCH_IBX(dev)) {
2805 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
0fc932b8
JB		 2806 I915_WRITE(FDI_RX_CHICKEN(pipe),
2807 I915_READ(FDI_RX_CHICKEN(pipe) &
6f06ce18 2808 ~FDI_RX_PHASE_SYNC_POINTER_EN));
291427f5
JB		 2809 } else if (HAS_PCH_CPT(dev)) {
2810 cpt_phase_pointer_disable(dev, pipe);
6f06ce18 2811 }
0fc932b8
JB		 2812
2813 /* still set train pattern 1 */
2814 reg = FDI_TX_CTL(pipe);
2815 temp = I915_READ(reg);
2816 temp &= ~FDI_LINK_TRAIN_NONE;
2817 temp |= FDI_LINK_TRAIN_PATTERN_1;
2818 I915_WRITE(reg, temp);
2819
2820 reg = FDI_RX_CTL(pipe);
2821 temp = I915_READ(reg);
2822 if (HAS_PCH_CPT(dev)) {
2823 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2824 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2825 } else {
2826 temp &= ~FDI_LINK_TRAIN_NONE;
2827 temp |= FDI_LINK_TRAIN_PATTERN_1;
2828 }
2829 /* BPC in FDI rx is consistent with that in PIPECONF */
2830 temp &= ~(0x07 << 16);
2831 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2832 I915_WRITE(reg, temp);
2833
2834 POSTING_READ(reg);
2835 udelay(100);
2836}
2837
5bb61643
CW		 2838static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
2839{
2840 struct drm_device *dev = crtc->dev;
2841 struct drm_i915_private *dev_priv = dev->dev_private;
2842 unsigned long flags;
2843 bool pending;
2844
2845 if (atomic_read(&dev_priv->mm.wedged))
2846 return false;
2847
2848 spin_lock_irqsave(&dev->event_lock, flags);
2849 pending = to_intel_crtc(crtc)->unpin_work != NULL;
2850 spin_unlock_irqrestore(&dev->event_lock, flags);
2851
2852 return pending;
2853}
2854
e6c3a2a6
CW		 2855static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2856{
0f91128d 2857 struct drm_device *dev = crtc->dev;
5bb61643 2858 struct drm_i915_private *dev_priv = dev->dev_private;
e6c3a2a6
CW		 2859
2860 if (crtc->fb == NULL)
2861 return;
2862
5bb61643
CW		 2863 wait_event(dev_priv->pending_flip_queue,
2864 !intel_crtc_has_pending_flip(crtc));
2865
0f91128d
CW		 2866 mutex_lock(&dev->struct_mutex);
2867 intel_finish_fb(crtc->fb);
2868 mutex_unlock(&dev->struct_mutex);
e6c3a2a6
CW		 2869}
2870
fc316cbe 2871static bool ironlake_crtc_driving_pch(struct drm_crtc *crtc)
040484af
JB		 2872{
2873 struct drm_device *dev = crtc->dev;
228d3e36 2874 struct intel_encoder *intel_encoder;
040484af
JB		 2875
2876 /*
2877 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
2878 * must be driven by its own crtc; no sharing is possible.
2879 */
228d3e36 2880 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
228d3e36 2881 switch (intel_encoder->type) {
040484af 2882 case INTEL_OUTPUT_EDP:
228d3e36 2883 if (!intel_encoder_is_pch_edp(&intel_encoder->base))
040484af
JB		 2884 return false;
2885 continue;
2886 }
2887 }
2888
2889 return true;
2890}
2891
fc316cbe
PZ		 2892static bool haswell_crtc_driving_pch(struct drm_crtc *crtc)
2893{
2894 return intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG);
2895}
2896
e615efe4
ED		 2897/* Program iCLKIP clock to the desired frequency */
2898static void lpt_program_iclkip(struct drm_crtc *crtc)
2899{
2900 struct drm_device *dev = crtc->dev;
2901 struct drm_i915_private *dev_priv = dev->dev_private;
2902 u32 divsel, phaseinc, auxdiv, phasedir = 0;
2903 u32 temp;
2904
2905 /* It is necessary to ungate the pixclk gate prior to programming
2906 * the divisors, and gate it back when it is done.
2907 */
2908 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
2909
2910 /* Disable SSCCTL */
2911 intel_sbi_write(dev_priv, SBI_SSCCTL6,
2912 intel_sbi_read(dev_priv, SBI_SSCCTL6) |
2913 SBI_SSCCTL_DISABLE);
2914
2915 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
2916 if (crtc->mode.clock == 20000) {
2917 auxdiv = 1;
2918 divsel = 0x41;
2919 phaseinc = 0x20;
2920 } else {
2921 /* The iCLK virtual clock root frequency is in MHz,
2922 * but the crtc->mode.clock in in KHz. To get the divisors,
2923 * it is necessary to divide one by another, so we
2924 * convert the virtual clock precision to KHz here for higher
2925 * precision.
2926 */
2927 u32 iclk_virtual_root_freq = 172800 * 1000;
2928 u32 iclk_pi_range = 64;
2929 u32 desired_divisor, msb_divisor_value, pi_value;
2930
2931 desired_divisor = (iclk_virtual_root_freq / crtc->mode.clock);
2932 msb_divisor_value = desired_divisor / iclk_pi_range;
2933 pi_value = desired_divisor % iclk_pi_range;
2934
2935 auxdiv = 0;
2936 divsel = msb_divisor_value - 2;
2937 phaseinc = pi_value;
2938 }
2939
2940 /* This should not happen with any sane values */
2941 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
2942 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
2943 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
2944 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
2945
2946 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
2947 crtc->mode.clock,
2948 auxdiv,
2949 divsel,
2950 phasedir,
2951 phaseinc);
2952
2953 /* Program SSCDIVINTPHASE6 */
2954 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6);
2955 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
2956 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
2957 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
2958 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
2959 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
2960 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
2961
2962 intel_sbi_write(dev_priv,
2963 SBI_SSCDIVINTPHASE6,
2964 temp);
2965
2966 /* Program SSCAUXDIV */
2967 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6);
2968 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
2969 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
2970 intel_sbi_write(dev_priv,
2971 SBI_SSCAUXDIV6,
2972 temp);
2973
2974
2975 /* Enable modulator and associated divider */
2976 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6);
2977 temp &= ~SBI_SSCCTL_DISABLE;
2978 intel_sbi_write(dev_priv,
2979 SBI_SSCCTL6,
2980 temp);
2981
2982 /* Wait for initialization time */
2983 udelay(24);
2984
2985 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
2986}
2987
f67a559d
JB		 2988/*
2989 * Enable PCH resources required for PCH ports:
2990 * - PCH PLLs
2991 * - FDI training & RX/TX
2992 * - update transcoder timings
2993 * - DP transcoding bits
2994 * - transcoder
2995 */
2996static void ironlake_pch_enable(struct drm_crtc *crtc)
0e23b99d
JB		 2997{
2998 struct drm_device *dev = crtc->dev;
2999 struct drm_i915_private *dev_priv = dev->dev_private;
3000 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3001 int pipe = intel_crtc->pipe;
ee7b9f93 3002 u32 reg, temp;
2c07245f 3003
e7e164db
CW		 3004 assert_transcoder_disabled(dev_priv, pipe);
3005
c98e9dcf 3006 /* For PCH output, training FDI link */
674cf967 3007 dev_priv->display.fdi_link_train(crtc);
2c07245f 3008
6f13b7b5
CW		 3009 intel_enable_pch_pll(intel_crtc);
3010
e615efe4
ED		 3011 if (HAS_PCH_LPT(dev)) {
3012 DRM_DEBUG_KMS("LPT detected: programming iCLKIP\n");
3013 lpt_program_iclkip(crtc);
3014 } else if (HAS_PCH_CPT(dev)) {
ee7b9f93 3015 u32 sel;
4b645f14 3016
c98e9dcf 3017 temp = I915_READ(PCH_DPLL_SEL);
ee7b9f93
JB		 3018 switch (pipe) {
3019 default:
3020 case 0:
3021 temp |= TRANSA_DPLL_ENABLE;
3022 sel = TRANSA_DPLLB_SEL;
3023 break;
3024 case 1:
3025 temp |= TRANSB_DPLL_ENABLE;
3026 sel = TRANSB_DPLLB_SEL;
3027 break;
3028 case 2:
3029 temp |= TRANSC_DPLL_ENABLE;
3030 sel = TRANSC_DPLLB_SEL;
3031 break;
d64311ab 3032 }
ee7b9f93
JB		 3033 if (intel_crtc->pch_pll->pll_reg == _PCH_DPLL_B)
3034 temp |= sel;
3035 else
3036 temp &= ~sel;
c98e9dcf 3037 I915_WRITE(PCH_DPLL_SEL, temp);
c98e9dcf 3038 }
5eddb70b 3039
d9b6cb56
JB		 3040 /* set transcoder timing, panel must allow it */
3041 assert_panel_unlocked(dev_priv, pipe);
5eddb70b
CW		 3042 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
3043 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
3044 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
8db9d77b 3045
5eddb70b
CW		 3046 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
3047 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
3048 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
0529a0d9 3049 I915_WRITE(TRANS_VSYNCSHIFT(pipe), I915_READ(VSYNCSHIFT(pipe)));
8db9d77b 3050
f57e1e3a
ED		 3051 if (!IS_HASWELL(dev))
3052 intel_fdi_normal_train(crtc);
5e84e1a4 3053
c98e9dcf
JB		 3054 /* For PCH DP, enable TRANS_DP_CTL */
3055 if (HAS_PCH_CPT(dev) &&
417e822d
KP		 3056 (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
3057 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
9325c9f0 3058 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) >> 5;
5eddb70b
CW		 3059 reg = TRANS_DP_CTL(pipe);
3060 temp = I915_READ(reg);
3061 temp &= ~(TRANS_DP_PORT_SEL_MASK |
220cad3c
EA		 3062 TRANS_DP_SYNC_MASK |
3063 TRANS_DP_BPC_MASK);
5eddb70b
CW		 3064 temp |= (TRANS_DP_OUTPUT_ENABLE |
3065 TRANS_DP_ENH_FRAMING);
9325c9f0 3066 temp |= bpc << 9; /* same format but at 11:9 */
c98e9dcf
JB		 3067
3068 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
5eddb70b 3069 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
c98e9dcf 3070 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
5eddb70b 3071 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
c98e9dcf
JB		 3072
3073 switch (intel_trans_dp_port_sel(crtc)) {
3074 case PCH_DP_B:
5eddb70b 3075 temp |= TRANS_DP_PORT_SEL_B;
c98e9dcf
JB		 3076 break;
3077 case PCH_DP_C:
5eddb70b 3078 temp |= TRANS_DP_PORT_SEL_C;
c98e9dcf
JB		 3079 break;
3080 case PCH_DP_D:
5eddb70b 3081 temp |= TRANS_DP_PORT_SEL_D;
c98e9dcf
JB		 3082 break;
3083 default:
3084 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
5eddb70b 3085 temp |= TRANS_DP_PORT_SEL_B;
c98e9dcf 3086 break;
32f9d658 3087 }
2c07245f 3088
5eddb70b 3089 I915_WRITE(reg, temp);
6be4a607 3090 }
b52eb4dc 3091
040484af 3092 intel_enable_transcoder(dev_priv, pipe);
f67a559d
JB		 3093}
3094
ee7b9f93
JB		 3095static void intel_put_pch_pll(struct intel_crtc *intel_crtc)
3096{
3097 struct intel_pch_pll *pll = intel_crtc->pch_pll;
3098
3099 if (pll == NULL)
3100 return;
3101
3102 if (pll->refcount == 0) {
3103 WARN(1, "bad PCH PLL refcount\n");
3104 return;
3105 }
3106
3107 --pll->refcount;
3108 intel_crtc->pch_pll = NULL;
3109}
3110
3111static struct intel_pch_pll *intel_get_pch_pll(struct intel_crtc *intel_crtc, u32 dpll, u32 fp)
3112{
3113 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
3114 struct intel_pch_pll *pll;
3115 int i;
3116
3117 pll = intel_crtc->pch_pll;
3118 if (pll) {
3119 DRM_DEBUG_KMS("CRTC:%d reusing existing PCH PLL %x\n",
3120 intel_crtc->base.base.id, pll->pll_reg);
3121 goto prepare;
3122 }
3123
98b6bd99
DV		 3124 if (HAS_PCH_IBX(dev_priv->dev)) {
3125 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
3126 i = intel_crtc->pipe;
3127 pll = &dev_priv->pch_plls[i];
3128
3129 DRM_DEBUG_KMS("CRTC:%d using pre-allocated PCH PLL %x\n",
3130 intel_crtc->base.base.id, pll->pll_reg);
3131
3132 goto found;
3133 }
3134
ee7b9f93
JB		 3135 for (i = 0; i < dev_priv->num_pch_pll; i++) {
3136 pll = &dev_priv->pch_plls[i];
3137
3138 /* Only want to check enabled timings first */
3139 if (pll->refcount == 0)
3140 continue;
3141
3142 if (dpll == (I915_READ(pll->pll_reg) & 0x7fffffff) &&
3143 fp == I915_READ(pll->fp0_reg)) {
3144 DRM_DEBUG_KMS("CRTC:%d sharing existing PCH PLL %x (refcount %d, ative %d)\n",
3145 intel_crtc->base.base.id,
3146 pll->pll_reg, pll->refcount, pll->active);
3147
3148 goto found;
3149 }
3150 }
3151
3152 /* Ok no matching timings, maybe there's a free one? */
3153 for (i = 0; i < dev_priv->num_pch_pll; i++) {
3154 pll = &dev_priv->pch_plls[i];
3155 if (pll->refcount == 0) {
3156 DRM_DEBUG_KMS("CRTC:%d allocated PCH PLL %x\n",
3157 intel_crtc->base.base.id, pll->pll_reg);
3158 goto found;
3159 }
3160 }
3161
3162 return NULL;
3163
3164found:
3165 intel_crtc->pch_pll = pll;
3166 pll->refcount++;
3167 DRM_DEBUG_DRIVER("using pll %d for pipe %d\n", i, intel_crtc->pipe);
3168prepare: /* separate function? */
3169 DRM_DEBUG_DRIVER("switching PLL %x off\n", pll->pll_reg);
ee7b9f93 3170
e04c7350
CW		 3171 /* Wait for the clocks to stabilize before rewriting the regs */
3172 I915_WRITE(pll->pll_reg, dpll & ~DPLL_VCO_ENABLE);
ee7b9f93
JB		 3173 POSTING_READ(pll->pll_reg);
3174 udelay(150);
e04c7350
CW		 3175
3176 I915_WRITE(pll->fp0_reg, fp);
3177 I915_WRITE(pll->pll_reg, dpll & ~DPLL_VCO_ENABLE);
ee7b9f93
JB		 3178 pll->on = false;
3179 return pll;
3180}
3181
d4270e57
JB		 3182void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
3183{
3184 struct drm_i915_private *dev_priv = dev->dev_private;
3185 int dslreg = PIPEDSL(pipe), tc2reg = TRANS_CHICKEN2(pipe);
3186 u32 temp;
3187
3188 temp = I915_READ(dslreg);
3189 udelay(500);
3190 if (wait_for(I915_READ(dslreg) != temp, 5)) {
3191 /* Without this, mode sets may fail silently on FDI */
3192 I915_WRITE(tc2reg, TRANS_AUTOTRAIN_GEN_STALL_DIS);
3193 udelay(250);
3194 I915_WRITE(tc2reg, 0);
3195 if (wait_for(I915_READ(dslreg) != temp, 5))
3196 DRM_ERROR("mode set failed: pipe %d stuck\n", pipe);
3197 }
3198}
3199
f67a559d
JB		 3200static void ironlake_crtc_enable(struct drm_crtc *crtc)
3201{
3202 struct drm_device *dev = crtc->dev;
3203 struct drm_i915_private *dev_priv = dev->dev_private;
3204 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 3205 struct intel_encoder *encoder;
f67a559d
JB		 3206 int pipe = intel_crtc->pipe;
3207 int plane = intel_crtc->plane;
3208 u32 temp;
3209 bool is_pch_port;
3210
08a48469
DV		 3211 WARN_ON(!crtc->enabled);
3212
f67a559d
JB		 3213 if (intel_crtc->active)
3214 return;
3215
3216 intel_crtc->active = true;
3217 intel_update_watermarks(dev);
3218
3219 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
3220 temp = I915_READ(PCH_LVDS);
3221 if ((temp & LVDS_PORT_EN) == 0)
3222 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
3223 }
3224
fc316cbe 3225 is_pch_port = ironlake_crtc_driving_pch(crtc);
f67a559d 3226
46b6f814 3227 if (is_pch_port) {
88cefb6c 3228 ironlake_fdi_pll_enable(intel_crtc);
46b6f814
DV		 3229 } else {
3230 assert_fdi_tx_disabled(dev_priv, pipe);
3231 assert_fdi_rx_disabled(dev_priv, pipe);
3232 }
f67a559d 3233
bf49ec8c
DV		 3234 for_each_encoder_on_crtc(dev, crtc, encoder)
3235 if (encoder->pre_enable)
3236 encoder->pre_enable(encoder);
3237
f67a559d
JB		 3238 /* Enable panel fitting for LVDS */
3239 if (dev_priv->pch_pf_size &&
3240 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
3241 /* Force use of hard-coded filter coefficients
3242 * as some pre-programmed values are broken,
3243 * e.g. x201.
3244 */
9db4a9c7
JB		 3245 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
3246 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
3247 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
f67a559d
JB		 3248 }
3249
9c54c0dd
JB		 3250 /*
3251 * On ILK+ LUT must be loaded before the pipe is running but with
3252 * clocks enabled
3253 */
3254 intel_crtc_load_lut(crtc);
3255
f67a559d
JB		 3256 intel_enable_pipe(dev_priv, pipe, is_pch_port);
3257 intel_enable_plane(dev_priv, plane, pipe);
3258
3259 if (is_pch_port)
3260 ironlake_pch_enable(crtc);
c98e9dcf 3261
d1ebd816 3262 mutex_lock(&dev->struct_mutex);
bed4a673 3263 intel_update_fbc(dev);
d1ebd816
BW		 3264 mutex_unlock(&dev->struct_mutex);
3265
6b383a7f 3266 intel_crtc_update_cursor(crtc, true);
ef9c3aee 3267
fa5c73b1
DV		 3268 for_each_encoder_on_crtc(dev, crtc, encoder)
3269 encoder->enable(encoder);
61b77ddd
DV		 3270
3271 if (HAS_PCH_CPT(dev))
3272 intel_cpt_verify_modeset(dev, intel_crtc->pipe);
6ce94100
DV		 3273
3274 /*
3275 * There seems to be a race in PCH platform hw (at least on some
3276 * outputs) where an enabled pipe still completes any pageflip right
3277 * away (as if the pipe is off) instead of waiting for vblank. As soon
3278 * as the first vblank happend, everything works as expected. Hence just
3279 * wait for one vblank before returning to avoid strange things
3280 * happening.
3281 */
3282 intel_wait_for_vblank(dev, intel_crtc->pipe);
6be4a607
JB		 3283}
3284
4f771f10
PZ		 3285static void haswell_crtc_enable(struct drm_crtc *crtc)
3286{
3287 struct drm_device *dev = crtc->dev;
3288 struct drm_i915_private *dev_priv = dev->dev_private;
3289 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3290 struct intel_encoder *encoder;
3291 int pipe = intel_crtc->pipe;
3292 int plane = intel_crtc->plane;
4f771f10
PZ		 3293 bool is_pch_port;
3294
3295 WARN_ON(!crtc->enabled);
3296
3297 if (intel_crtc->active)
3298 return;
3299
3300 intel_crtc->active = true;
3301 intel_update_watermarks(dev);
3302
fc316cbe 3303 is_pch_port = haswell_crtc_driving_pch(crtc);
4f771f10 3304
83616634 3305 if (is_pch_port)
4f771f10 3306 ironlake_fdi_pll_enable(intel_crtc);
4f771f10
PZ		 3307
3308 for_each_encoder_on_crtc(dev, crtc, encoder)
3309 if (encoder->pre_enable)
3310 encoder->pre_enable(encoder);
3311
1f544388 3312 intel_ddi_enable_pipe_clock(intel_crtc);
4f771f10 3313
1f544388
PZ		 3314 /* Enable panel fitting for eDP */
3315 if (dev_priv->pch_pf_size && HAS_eDP) {
4f771f10
PZ		 3316 /* Force use of hard-coded filter coefficients
3317 * as some pre-programmed values are broken,
3318 * e.g. x201.
3319 */
3320 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
3321 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
3322 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
3323 }
3324
3325 /*
3326 * On ILK+ LUT must be loaded before the pipe is running but with
3327 * clocks enabled
3328 */
3329 intel_crtc_load_lut(crtc);
3330
1f544388
PZ		 3331 intel_ddi_set_pipe_settings(crtc);
3332 intel_ddi_enable_pipe_func(crtc);
4f771f10
PZ		 3333
3334 intel_enable_pipe(dev_priv, pipe, is_pch_port);
3335 intel_enable_plane(dev_priv, plane, pipe);
3336
3337 if (is_pch_port)
3338 ironlake_pch_enable(crtc);
3339
3340 mutex_lock(&dev->struct_mutex);
3341 intel_update_fbc(dev);
3342 mutex_unlock(&dev->struct_mutex);
3343
3344 intel_crtc_update_cursor(crtc, true);
3345
3346 for_each_encoder_on_crtc(dev, crtc, encoder)
3347 encoder->enable(encoder);
3348
4f771f10
PZ		 3349 /*
3350 * There seems to be a race in PCH platform hw (at least on some
3351 * outputs) where an enabled pipe still completes any pageflip right
3352 * away (as if the pipe is off) instead of waiting for vblank. As soon
3353 * as the first vblank happend, everything works as expected. Hence just
3354 * wait for one vblank before returning to avoid strange things
3355 * happening.
3356 */
3357 intel_wait_for_vblank(dev, intel_crtc->pipe);
3358}
3359
6be4a607
JB		 3360static void ironlake_crtc_disable(struct drm_crtc *crtc)
3361{
3362 struct drm_device *dev = crtc->dev;
3363 struct drm_i915_private *dev_priv = dev->dev_private;
3364 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 3365 struct intel_encoder *encoder;
6be4a607
JB		 3366 int pipe = intel_crtc->pipe;
3367 int plane = intel_crtc->plane;
5eddb70b 3368 u32 reg, temp;
b52eb4dc 3369
ef9c3aee 3370
f7abfe8b
CW		 3371 if (!intel_crtc->active)
3372 return;
3373
ea9d758d
DV		 3374 for_each_encoder_on_crtc(dev, crtc, encoder)
3375 encoder->disable(encoder);
3376
e6c3a2a6 3377 intel_crtc_wait_for_pending_flips(crtc);
6be4a607 3378 drm_vblank_off(dev, pipe);
6b383a7f 3379 intel_crtc_update_cursor(crtc, false);
5eddb70b 3380
b24e7179 3381 intel_disable_plane(dev_priv, plane, pipe);
913d8d11 3382
973d04f9
CW		 3383 if (dev_priv->cfb_plane == plane)
3384 intel_disable_fbc(dev);
2c07245f 3385
b24e7179 3386 intel_disable_pipe(dev_priv, pipe);
32f9d658 3387
6be4a607 3388 /* Disable PF */
9db4a9c7
JB		 3389 I915_WRITE(PF_CTL(pipe), 0);
3390 I915_WRITE(PF_WIN_SZ(pipe), 0);
2c07245f 3391
bf49ec8c
DV		 3392 for_each_encoder_on_crtc(dev, crtc, encoder)
3393 if (encoder->post_disable)
3394 encoder->post_disable(encoder);
3395
0fc932b8 3396 ironlake_fdi_disable(crtc);
2c07245f 3397
040484af 3398 intel_disable_transcoder(dev_priv, pipe);
913d8d11 3399
6be4a607
JB		 3400 if (HAS_PCH_CPT(dev)) {
3401 /* disable TRANS_DP_CTL */
5eddb70b
CW		 3402 reg = TRANS_DP_CTL(pipe);
3403 temp = I915_READ(reg);
3404 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
cb3543c6 3405 temp |= TRANS_DP_PORT_SEL_NONE;
5eddb70b 3406 I915_WRITE(reg, temp);
6be4a607
JB		 3407
3408 /* disable DPLL_SEL */
3409 temp = I915_READ(PCH_DPLL_SEL);
9db4a9c7
JB		 3410 switch (pipe) {
3411 case 0:
d64311ab 3412 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
9db4a9c7
JB		 3413 break;
3414 case 1:
6be4a607 3415 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
9db4a9c7
JB		 3416 break;
3417 case 2:
4b645f14 3418 /* C shares PLL A or B */
d64311ab 3419 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
9db4a9c7
JB		 3420 break;
3421 default:
3422 BUG(); /* wtf */
3423 }
6be4a607 3424 I915_WRITE(PCH_DPLL_SEL, temp);
6be4a607 3425 }
e3421a18 3426
6be4a607 3427 /* disable PCH DPLL */
ee7b9f93 3428 intel_disable_pch_pll(intel_crtc);
8db9d77b 3429
88cefb6c 3430 ironlake_fdi_pll_disable(intel_crtc);
6b383a7f 3431
f7abfe8b 3432 intel_crtc->active = false;
6b383a7f 3433 intel_update_watermarks(dev);
d1ebd816
BW		 3434
3435 mutex_lock(&dev->struct_mutex);
6b383a7f 3436 intel_update_fbc(dev);
d1ebd816 3437 mutex_unlock(&dev->struct_mutex);
6be4a607 3438}
1b3c7a47 3439
4f771f10
PZ		 3440static void haswell_crtc_disable(struct drm_crtc *crtc)
3441{
3442 struct drm_device *dev = crtc->dev;
3443 struct drm_i915_private *dev_priv = dev->dev_private;
3444 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3445 struct intel_encoder *encoder;
3446 int pipe = intel_crtc->pipe;
3447 int plane = intel_crtc->plane;
ad80a810 3448 enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
83616634 3449 bool is_pch_port;
4f771f10
PZ		 3450
3451 if (!intel_crtc->active)
3452 return;
3453
83616634
PZ		 3454 is_pch_port = haswell_crtc_driving_pch(crtc);
3455
4f771f10
PZ		 3456 for_each_encoder_on_crtc(dev, crtc, encoder)
3457 encoder->disable(encoder);
3458
3459 intel_crtc_wait_for_pending_flips(crtc);
3460 drm_vblank_off(dev, pipe);
3461 intel_crtc_update_cursor(crtc, false);
3462
3463 intel_disable_plane(dev_priv, plane, pipe);
3464
3465 if (dev_priv->cfb_plane == plane)
3466 intel_disable_fbc(dev);
3467
3468 intel_disable_pipe(dev_priv, pipe);
3469
ad80a810 3470 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
4f771f10
PZ		 3471
3472 /* Disable PF */
3473 I915_WRITE(PF_CTL(pipe), 0);
3474 I915_WRITE(PF_WIN_SZ(pipe), 0);
3475
1f544388 3476 intel_ddi_disable_pipe_clock(intel_crtc);
4f771f10
PZ		 3477
3478 for_each_encoder_on_crtc(dev, crtc, encoder)
3479 if (encoder->post_disable)
3480 encoder->post_disable(encoder);
3481
83616634
PZ		 3482 if (is_pch_port) {
3483 ironlake_fdi_disable(crtc);
3484 intel_disable_transcoder(dev_priv, pipe);
3485 intel_disable_pch_pll(intel_crtc);
3486 ironlake_fdi_pll_disable(intel_crtc);
3487 }
4f771f10
PZ		 3488
3489 intel_crtc->active = false;
3490 intel_update_watermarks(dev);
3491
3492 mutex_lock(&dev->struct_mutex);
3493 intel_update_fbc(dev);
3494 mutex_unlock(&dev->struct_mutex);
3495}
3496
ee7b9f93
JB		 3497static void ironlake_crtc_off(struct drm_crtc *crtc)
3498{
3499 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3500 intel_put_pch_pll(intel_crtc);
3501}
3502
6441ab5f
PZ		 3503static void haswell_crtc_off(struct drm_crtc *crtc)
3504{
a5c961d1
PZ		 3505 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3506
3507 /* Stop saying we're using TRANSCODER_EDP because some other CRTC might
3508 * start using it. */
3509 intel_crtc->cpu_transcoder = intel_crtc->pipe;
3510
6441ab5f
PZ		 3511 intel_ddi_put_crtc_pll(crtc);
3512}
3513
02e792fb
DV		 3514static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
3515{
02e792fb 3516 if (!enable && intel_crtc->overlay) {
23f09ce3 3517 struct drm_device *dev = intel_crtc->base.dev;
ce453d81 3518 struct drm_i915_private *dev_priv = dev->dev_private;
03f77ea5 3519
23f09ce3 3520 mutex_lock(&dev->struct_mutex);
ce453d81
CW		 3521 dev_priv->mm.interruptible = false;
3522 (void) intel_overlay_switch_off(intel_crtc->overlay);
3523 dev_priv->mm.interruptible = true;
23f09ce3 3524 mutex_unlock(&dev->struct_mutex);
02e792fb 3525 }
02e792fb 3526
5dcdbcb0
CW		 3527 /* Let userspace switch the overlay on again. In most cases userspace
3528 * has to recompute where to put it anyway.
3529 */
02e792fb
DV		 3530}
3531
0b8765c6 3532static void i9xx_crtc_enable(struct drm_crtc *crtc)
79e53945
JB		 3533{
3534 struct drm_device *dev = crtc->dev;
79e53945
JB		 3535 struct drm_i915_private *dev_priv = dev->dev_private;
3536 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 3537 struct intel_encoder *encoder;
79e53945 3538 int pipe = intel_crtc->pipe;
80824003 3539 int plane = intel_crtc->plane;
79e53945 3540
08a48469
DV		 3541 WARN_ON(!crtc->enabled);
3542
f7abfe8b
CW		 3543 if (intel_crtc->active)
3544 return;
3545
3546 intel_crtc->active = true;
6b383a7f
CW		 3547 intel_update_watermarks(dev);
3548
63d7bbe9 3549 intel_enable_pll(dev_priv, pipe);
040484af 3550 intel_enable_pipe(dev_priv, pipe, false);
b24e7179 3551 intel_enable_plane(dev_priv, plane, pipe);
79e53945 3552
0b8765c6 3553 intel_crtc_load_lut(crtc);
bed4a673 3554 intel_update_fbc(dev);
79e53945 3555
0b8765c6
JB		 3556 /* Give the overlay scaler a chance to enable if it's on this pipe */
3557 intel_crtc_dpms_overlay(intel_crtc, true);
6b383a7f 3558 intel_crtc_update_cursor(crtc, true);
ef9c3aee 3559
fa5c73b1
DV		 3560 for_each_encoder_on_crtc(dev, crtc, encoder)
3561 encoder->enable(encoder);
0b8765c6 3562}
79e53945 3563
0b8765c6
JB		 3564static void i9xx_crtc_disable(struct drm_crtc *crtc)
3565{
3566 struct drm_device *dev = crtc->dev;
3567 struct drm_i915_private *dev_priv = dev->dev_private;
3568 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 3569 struct intel_encoder *encoder;
0b8765c6
JB		 3570 int pipe = intel_crtc->pipe;
3571 int plane = intel_crtc->plane;
b690e96c 3572
ef9c3aee 3573
f7abfe8b
CW		 3574 if (!intel_crtc->active)
3575 return;
3576
ea9d758d
DV		 3577 for_each_encoder_on_crtc(dev, crtc, encoder)
3578 encoder->disable(encoder);
3579
0b8765c6 3580 /* Give the overlay scaler a chance to disable if it's on this pipe */
e6c3a2a6
CW		 3581 intel_crtc_wait_for_pending_flips(crtc);
3582 drm_vblank_off(dev, pipe);
0b8765c6 3583 intel_crtc_dpms_overlay(intel_crtc, false);
6b383a7f 3584 intel_crtc_update_cursor(crtc, false);
0b8765c6 3585
973d04f9
CW		 3586 if (dev_priv->cfb_plane == plane)
3587 intel_disable_fbc(dev);
79e53945 3588
b24e7179 3589 intel_disable_plane(dev_priv, plane, pipe);
b24e7179 3590 intel_disable_pipe(dev_priv, pipe);
63d7bbe9 3591 intel_disable_pll(dev_priv, pipe);
0b8765c6 3592
f7abfe8b 3593 intel_crtc->active = false;
6b383a7f
CW		 3594 intel_update_fbc(dev);
3595 intel_update_watermarks(dev);
0b8765c6
JB		 3596}
3597
ee7b9f93
JB		 3598static void i9xx_crtc_off(struct drm_crtc *crtc)
3599{
3600}
3601
976f8a20
DV		 3602static void intel_crtc_update_sarea(struct drm_crtc *crtc,
3603 bool enabled)
2c07245f
ZW		 3604{
3605 struct drm_device *dev = crtc->dev;
3606 struct drm_i915_master_private *master_priv;
3607 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3608 int pipe = intel_crtc->pipe;
79e53945
JB		 3609
3610 if (!dev->primary->master)
3611 return;
3612
3613 master_priv = dev->primary->master->driver_priv;
3614 if (!master_priv->sarea_priv)
3615 return;
3616
79e53945
JB		 3617 switch (pipe) {
3618 case 0:
3619 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
3620 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
3621 break;
3622 case 1:
3623 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
3624 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
3625 break;
3626 default:
9db4a9c7 3627 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
79e53945
JB		 3628 break;
3629 }
79e53945
JB		 3630}
3631
976f8a20
DV		 3632/**
3633 * Sets the power management mode of the pipe and plane.
3634 */
3635void intel_crtc_update_dpms(struct drm_crtc *crtc)
3636{
3637 struct drm_device *dev = crtc->dev;
3638 struct drm_i915_private *dev_priv = dev->dev_private;
3639 struct intel_encoder *intel_encoder;
3640 bool enable = false;
3641
3642 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
3643 enable |= intel_encoder->connectors_active;
3644
3645 if (enable)
3646 dev_priv->display.crtc_enable(crtc);
3647 else
3648 dev_priv->display.crtc_disable(crtc);
3649
3650 intel_crtc_update_sarea(crtc, enable);
3651}
3652
3653static void intel_crtc_noop(struct drm_crtc *crtc)
3654{
3655}
3656
cdd59983
CW		 3657static void intel_crtc_disable(struct drm_crtc *crtc)
3658{
cdd59983 3659 struct drm_device *dev = crtc->dev;
976f8a20 3660 struct drm_connector *connector;
ee7b9f93 3661 struct drm_i915_private *dev_priv = dev->dev_private;
cdd59983 3662
976f8a20
DV		 3663 /* crtc should still be enabled when we disable it. */
3664 WARN_ON(!crtc->enabled);
3665
3666 dev_priv->display.crtc_disable(crtc);
3667 intel_crtc_update_sarea(crtc, false);
ee7b9f93
JB		 3668 dev_priv->display.off(crtc);
3669
931872fc
CW		 3670 assert_plane_disabled(dev->dev_private, to_intel_crtc(crtc)->plane);
3671 assert_pipe_disabled(dev->dev_private, to_intel_crtc(crtc)->pipe);
cdd59983
CW		 3672
3673 if (crtc->fb) {
3674 mutex_lock(&dev->struct_mutex);
1690e1eb 3675 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
cdd59983 3676 mutex_unlock(&dev->struct_mutex);
976f8a20
DV		 3677 crtc->fb = NULL;
3678 }
3679
3680 /* Update computed state. */
3681 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3682 if (!connector->encoder || !connector->encoder->crtc)
3683 continue;
3684
3685 if (connector->encoder->crtc != crtc)
3686 continue;
3687
3688 connector->dpms = DRM_MODE_DPMS_OFF;
3689 to_intel_encoder(connector->encoder)->connectors_active = false;
cdd59983
CW		 3690 }
3691}
3692
a261b246 3693void intel_modeset_disable(struct drm_device *dev)
79e53945 3694{
a261b246
DV		 3695 struct drm_crtc *crtc;
3696
3697 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3698 if (crtc->enabled)
3699 intel_crtc_disable(crtc);
3700 }
79e53945
JB		 3701}
3702
1f703855 3703void intel_encoder_noop(struct drm_encoder *encoder)
79e53945 3704{
7e7d76c3
JB		 3705}
3706
ea5b213a 3707void intel_encoder_destroy(struct drm_encoder *encoder)
7e7d76c3 3708{
4ef69c7a 3709 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
ea5b213a 3710
ea5b213a
CW		 3711 drm_encoder_cleanup(encoder);
3712 kfree(intel_encoder);
7e7d76c3
JB		 3713}
3714
5ab432ef
DV		 3715/* Simple dpms helper for encodres with just one connector, no cloning and only
3716 * one kind of off state. It clamps all !ON modes to fully OFF and changes the
3717 * state of the entire output pipe. */
3718void intel_encoder_dpms(struct intel_encoder *encoder, int mode)
7e7d76c3 3719{
5ab432ef
DV		 3720 if (mode == DRM_MODE_DPMS_ON) {
3721 encoder->connectors_active = true;
3722
b2cabb0e 3723 intel_crtc_update_dpms(encoder->base.crtc);
5ab432ef
DV		 3724 } else {
3725 encoder->connectors_active = false;
3726
b2cabb0e 3727 intel_crtc_update_dpms(encoder->base.crtc);
5ab432ef 3728 }
79e53945
JB		 3729}
3730
0a91ca29
DV		 3731/* Cross check the actual hw state with our own modeset state tracking (and it's
3732 * internal consistency). */
b980514c 3733static void intel_connector_check_state(struct intel_connector *connector)
79e53945 3734{
0a91ca29
DV		 3735 if (connector->get_hw_state(connector)) {
3736 struct intel_encoder *encoder = connector->encoder;
3737 struct drm_crtc *crtc;
3738 bool encoder_enabled;
3739 enum pipe pipe;
3740
3741 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
3742 connector->base.base.id,
3743 drm_get_connector_name(&connector->base));
3744
3745 WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
3746 "wrong connector dpms state\n");
3747 WARN(connector->base.encoder != &encoder->base,
3748 "active connector not linked to encoder\n");
3749 WARN(!encoder->connectors_active,
3750 "encoder->connectors_active not set\n");
3751
3752 encoder_enabled = encoder->get_hw_state(encoder, &pipe);
3753 WARN(!encoder_enabled, "encoder not enabled\n");
3754 if (WARN_ON(!encoder->base.crtc))
3755 return;
3756
3757 crtc = encoder->base.crtc;
3758
3759 WARN(!crtc->enabled, "crtc not enabled\n");
3760 WARN(!to_intel_crtc(crtc)->active, "crtc not active\n");
3761 WARN(pipe != to_intel_crtc(crtc)->pipe,
3762 "encoder active on the wrong pipe\n");
3763 }
79e53945
JB		 3764}
3765
5ab432ef
DV		 3766/* Even simpler default implementation, if there's really no special case to
3767 * consider. */
3768void intel_connector_dpms(struct drm_connector *connector, int mode)
79e53945 3769{
5ab432ef 3770 struct intel_encoder *encoder = intel_attached_encoder(connector);
d4270e57 3771
5ab432ef
DV		 3772 /* All the simple cases only support two dpms states. */
3773 if (mode != DRM_MODE_DPMS_ON)
3774 mode = DRM_MODE_DPMS_OFF;
d4270e57 3775
5ab432ef
DV		 3776 if (mode == connector->dpms)
3777 return;
3778
3779 connector->dpms = mode;
3780
3781 /* Only need to change hw state when actually enabled */
3782 if (encoder->base.crtc)
3783 intel_encoder_dpms(encoder, mode);
3784 else
8af6cf88 3785 WARN_ON(encoder->connectors_active != false);
0a91ca29 3786
b980514c 3787 intel_modeset_check_state(connector->dev);
79e53945
JB		 3788}
3789
f0947c37
DV		 3790/* Simple connector->get_hw_state implementation for encoders that support only
3791 * one connector and no cloning and hence the encoder state determines the state
3792 * of the connector. */
3793bool intel_connector_get_hw_state(struct intel_connector *connector)
ea5b213a 3794{
24929352 3795 enum pipe pipe = 0;
f0947c37 3796 struct intel_encoder *encoder = connector->encoder;
ea5b213a 3797
f0947c37 3798 return encoder->get_hw_state(encoder, &pipe);
ea5b213a
CW		 3799}
3800
79e53945 3801static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
35313cde 3802 const struct drm_display_mode *mode,
79e53945
JB		 3803 struct drm_display_mode *adjusted_mode)
3804{
2c07245f 3805 struct drm_device *dev = crtc->dev;
89749350 3806
bad720ff 3807 if (HAS_PCH_SPLIT(dev)) {
2c07245f 3808 /* FDI link clock is fixed at 2.7G */
2377b741
JB		 3809 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3810 return false;
2c07245f 3811 }
89749350 3812
f9bef081
DV		 3813 /* All interlaced capable intel hw wants timings in frames. Note though
3814 * that intel_lvds_mode_fixup does some funny tricks with the crtc
3815 * timings, so we need to be careful not to clobber these.*/
3816 if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET))
3817 drm_mode_set_crtcinfo(adjusted_mode, 0);
89749350 3818
44f46b42
CW		 3819 /* WaPruneModeWithIncorrectHsyncOffset: Cantiga+ cannot handle modes
3820 * with a hsync front porch of 0.
3821 */
3822 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
3823 adjusted_mode->hsync_start == adjusted_mode->hdisplay)
3824 return false;
3825
79e53945
JB		 3826 return true;
3827}
3828
25eb05fc
JB		 3829static int valleyview_get_display_clock_speed(struct drm_device *dev)
3830{
3831 return 400000; /* FIXME */
3832}
3833
e70236a8
JB		 3834static int i945_get_display_clock_speed(struct drm_device *dev)
3835{
3836 return 400000;
3837}
79e53945 3838
e70236a8 3839static int i915_get_display_clock_speed(struct drm_device *dev)
79e53945 3840{
e70236a8
JB		 3841 return 333000;
3842}
79e53945 3843
e70236a8
JB		 3844static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3845{
3846 return 200000;
3847}
79e53945 3848
e70236a8
JB		 3849static int i915gm_get_display_clock_speed(struct drm_device *dev)
3850{
3851 u16 gcfgc = 0;
79e53945 3852
e70236a8
JB		 3853 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3854
3855 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3856 return 133000;
3857 else {
3858 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3859 case GC_DISPLAY_CLOCK_333_MHZ:
3860 return 333000;
3861 default:
3862 case GC_DISPLAY_CLOCK_190_200_MHZ:
3863 return 190000;
79e53945 3864 }
e70236a8
JB		 3865 }
3866}
3867
3868static int i865_get_display_clock_speed(struct drm_device *dev)
3869{
3870 return 266000;
3871}
3872
3873static int i855_get_display_clock_speed(struct drm_device *dev)
3874{
3875 u16 hpllcc = 0;
3876 /* Assume that the hardware is in the high speed state. This
3877 * should be the default.
3878 */
3879 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3880 case GC_CLOCK_133_200:
3881 case GC_CLOCK_100_200:
3882 return 200000;
3883 case GC_CLOCK_166_250:
3884 return 250000;
3885 case GC_CLOCK_100_133:
79e53945 3886 return 133000;
e70236a8 3887 }
79e53945 3888
e70236a8
JB		 3889 /* Shouldn't happen */
3890 return 0;
3891}
79e53945 3892
e70236a8
JB		 3893static int i830_get_display_clock_speed(struct drm_device *dev)
3894{
3895 return 133000;
79e53945
JB		 3896}
3897
2c07245f
ZW		 3898struct fdi_m_n {
3899 u32 tu;
3900 u32 gmch_m;
3901 u32 gmch_n;
3902 u32 link_m;
3903 u32 link_n;
3904};
3905
3906static void
3907fdi_reduce_ratio(u32 *num, u32 *den)
3908{
3909 while (*num > 0xffffff || *den > 0xffffff) {
3910 *num >>= 1;
3911 *den >>= 1;
3912 }
3913}
3914
2c07245f 3915static void
f2b115e6
AJ		 3916ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3917 int link_clock, struct fdi_m_n *m_n)
2c07245f 3918{
2c07245f
ZW		 3919 m_n->tu = 64; /* default size */
3920
22ed1113
CW		 3921 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3922 m_n->gmch_m = bits_per_pixel * pixel_clock;
3923 m_n->gmch_n = link_clock * nlanes * 8;
2c07245f
ZW		 3924 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3925
22ed1113
CW		 3926 m_n->link_m = pixel_clock;
3927 m_n->link_n = link_clock;
2c07245f
ZW		 3928 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3929}
3930
a7615030
CW		 3931static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
3932{
72bbe58c
KP		 3933 if (i915_panel_use_ssc >= 0)
3934 return i915_panel_use_ssc != 0;
3935 return dev_priv->lvds_use_ssc
435793df 3936 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
a7615030
CW		 3937}
3938
5a354204
JB		 3939/**
3940 * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
3941 * @crtc: CRTC structure
3b5c78a3 3942 * @mode: requested mode
5a354204
JB		 3943 *
3944 * A pipe may be connected to one or more outputs. Based on the depth of the
3945 * attached framebuffer, choose a good color depth to use on the pipe.
3946 *
3947 * If possible, match the pipe depth to the fb depth. In some cases, this
3948 * isn't ideal, because the connected output supports a lesser or restricted
3949 * set of depths. Resolve that here:
3950 * LVDS typically supports only 6bpc, so clamp down in that case
3951 * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
3952 * Displays may support a restricted set as well, check EDID and clamp as
3953 * appropriate.
3b5c78a3 3954 * DP may want to dither down to 6bpc to fit larger modes
5a354204
JB		 3955 *
3956 * RETURNS:
3957 * Dithering requirement (i.e. false if display bpc and pipe bpc match,
3958 * true if they don't match).
3959 */
3960static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
94352cf9 3961 struct drm_framebuffer *fb,
3b5c78a3
AJ		 3962 unsigned int *pipe_bpp,
3963 struct drm_display_mode *mode)
5a354204
JB		 3964{
3965 struct drm_device *dev = crtc->dev;
3966 struct drm_i915_private *dev_priv = dev->dev_private;
5a354204 3967 struct drm_connector *connector;
6c2b7c12 3968 struct intel_encoder *intel_encoder;
5a354204
JB		 3969 unsigned int display_bpc = UINT_MAX, bpc;
3970
3971 /* Walk the encoders & connectors on this crtc, get min bpc */
6c2b7c12 3972 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
5a354204
JB		 3973
3974 if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
3975 unsigned int lvds_bpc;
3976
3977 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
3978 LVDS_A3_POWER_UP)
3979 lvds_bpc = 8;
3980 else
3981 lvds_bpc = 6;
3982
3983 if (lvds_bpc < display_bpc) {
82820490 3984 DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
5a354204
JB		 3985 display_bpc = lvds_bpc;
3986 }
3987 continue;
3988 }
3989
5a354204
JB		 3990 /* Not one of the known troublemakers, check the EDID */
3991 list_for_each_entry(connector, &dev->mode_config.connector_list,
3992 head) {
6c2b7c12 3993 if (connector->encoder != &intel_encoder->base)
5a354204
JB		 3994 continue;
3995
62ac41a6
JB		 3996 /* Don't use an invalid EDID bpc value */
3997 if (connector->display_info.bpc &&
3998 connector->display_info.bpc < display_bpc) {
82820490 3999 DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
5a354204
JB		 4000 display_bpc = connector->display_info.bpc;
4001 }
4002 }
4003
4004 /*
4005 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
4006 * through, clamp it down. (Note: >12bpc will be caught below.)
4007 */
4008 if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
4009 if (display_bpc > 8 && display_bpc < 12) {
82820490 4010 DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
5a354204
JB		 4011 display_bpc = 12;
4012 } else {
82820490 4013 DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
5a354204
JB		 4014 display_bpc = 8;
4015 }
4016 }
4017 }
4018
3b5c78a3
AJ		 4019 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
4020 DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
4021 display_bpc = 6;
4022 }
4023
5a354204
JB		 4024 /*
4025 * We could just drive the pipe at the highest bpc all the time and
4026 * enable dithering as needed, but that costs bandwidth. So choose
4027 * the minimum value that expresses the full color range of the fb but
4028 * also stays within the max display bpc discovered above.
4029 */
4030
94352cf9 4031 switch (fb->depth) {
5a354204
JB		 4032 case 8:
4033 bpc = 8; /* since we go through a colormap */
4034 break;
4035 case 15:
4036 case 16:
4037 bpc = 6; /* min is 18bpp */
4038 break;
4039 case 24:
578393cd 4040 bpc = 8;
5a354204
JB		 4041 break;
4042 case 30:
578393cd 4043 bpc = 10;
5a354204
JB		 4044 break;
4045 case 48:
578393cd 4046 bpc = 12;
5a354204
JB		 4047 break;
4048 default:
4049 DRM_DEBUG("unsupported depth, assuming 24 bits\n");
4050 bpc = min((unsigned int)8, display_bpc);
4051 break;
4052 }
4053
578393cd
KP		 4054 display_bpc = min(display_bpc, bpc);
4055
82820490
AJ		 4056 DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
4057 bpc, display_bpc);
5a354204 4058
578393cd 4059 *pipe_bpp = display_bpc * 3;
5a354204
JB		 4060
4061 return display_bpc != bpc;
4062}
4063
a0c4da24
JB		 4064static int vlv_get_refclk(struct drm_crtc *crtc)
4065{
4066 struct drm_device *dev = crtc->dev;
4067 struct drm_i915_private *dev_priv = dev->dev_private;
4068 int refclk = 27000; /* for DP & HDMI */
4069
4070 return 100000; /* only one validated so far */
4071
4072 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
4073 refclk = 96000;
4074 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
4075 if (intel_panel_use_ssc(dev_priv))
4076 refclk = 100000;
4077 else
4078 refclk = 96000;
4079 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
4080 refclk = 100000;
4081 }
4082
4083 return refclk;
4084}
4085
c65d77d8
JB		 4086static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
4087{
4088 struct drm_device *dev = crtc->dev;
4089 struct drm_i915_private *dev_priv = dev->dev_private;
4090 int refclk;
4091
a0c4da24
JB		 4092 if (IS_VALLEYVIEW(dev)) {
4093 refclk = vlv_get_refclk(crtc);
4094 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
c65d77d8
JB		 4095 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4096 refclk = dev_priv->lvds_ssc_freq * 1000;
4097 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4098 refclk / 1000);
4099 } else if (!IS_GEN2(dev)) {
4100 refclk = 96000;
4101 } else {
4102 refclk = 48000;
4103 }
4104
4105 return refclk;
4106}
4107
4108static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
4109 intel_clock_t *clock)
4110{
4111 /* SDVO TV has fixed PLL values depend on its clock range,
4112 this mirrors vbios setting. */
4113 if (adjusted_mode->clock >= 100000
4114 && adjusted_mode->clock < 140500) {
4115 clock->p1 = 2;
4116 clock->p2 = 10;
4117 clock->n = 3;
4118 clock->m1 = 16;
4119 clock->m2 = 8;
4120 } else if (adjusted_mode->clock >= 140500
4121 && adjusted_mode->clock <= 200000) {
4122 clock->p1 = 1;
4123 clock->p2 = 10;
4124 clock->n = 6;
4125 clock->m1 = 12;
4126 clock->m2 = 8;
4127 }
4128}
4129
a7516a05
JB		 4130static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
4131 intel_clock_t *clock,
4132 intel_clock_t *reduced_clock)
4133{
4134 struct drm_device *dev = crtc->dev;
4135 struct drm_i915_private *dev_priv = dev->dev_private;
4136 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4137 int pipe = intel_crtc->pipe;
4138 u32 fp, fp2 = 0;
4139
4140 if (IS_PINEVIEW(dev)) {
4141 fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
4142 if (reduced_clock)
4143 fp2 = (1 << reduced_clock->n) << 16 |
4144 reduced_clock->m1 << 8 | reduced_clock->m2;
4145 } else {
4146 fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
4147 if (reduced_clock)
4148 fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
4149 reduced_clock->m2;
4150 }
4151
4152 I915_WRITE(FP0(pipe), fp);
4153
4154 intel_crtc->lowfreq_avail = false;
4155 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
4156 reduced_clock && i915_powersave) {
4157 I915_WRITE(FP1(pipe), fp2);
4158 intel_crtc->lowfreq_avail = true;
4159 } else {
4160 I915_WRITE(FP1(pipe), fp);
4161 }
4162}
4163
93e537a1
DV		 4164static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
4165 struct drm_display_mode *adjusted_mode)
4166{
4167 struct drm_device *dev = crtc->dev;
4168 struct drm_i915_private *dev_priv = dev->dev_private;
4169 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4170 int pipe = intel_crtc->pipe;
284d5df5 4171 u32 temp;
93e537a1
DV		 4172
4173 temp = I915_READ(LVDS);
4174 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
4175 if (pipe == 1) {
4176 temp |= LVDS_PIPEB_SELECT;
4177 } else {
4178 temp &= ~LVDS_PIPEB_SELECT;
4179 }
4180 /* set the corresponsding LVDS_BORDER bit */
4181 temp |= dev_priv->lvds_border_bits;
4182 /* Set the B0-B3 data pairs corresponding to whether we're going to
4183 * set the DPLLs for dual-channel mode or not.
4184 */
4185 if (clock->p2 == 7)
4186 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
4187 else
4188 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
4189
4190 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
4191 * appropriately here, but we need to look more thoroughly into how
4192 * panels behave in the two modes.
4193 */
4194 /* set the dithering flag on LVDS as needed */
4195 if (INTEL_INFO(dev)->gen >= 4) {
4196 if (dev_priv->lvds_dither)
4197 temp |= LVDS_ENABLE_DITHER;
4198 else
4199 temp &= ~LVDS_ENABLE_DITHER;
4200 }
284d5df5 4201 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
93e537a1 4202 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
284d5df5 4203 temp |= LVDS_HSYNC_POLARITY;
93e537a1 4204 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
284d5df5 4205 temp |= LVDS_VSYNC_POLARITY;
93e537a1
DV		 4206 I915_WRITE(LVDS, temp);
4207}
4208
a0c4da24
JB		 4209static void vlv_update_pll(struct drm_crtc *crtc,
4210 struct drm_display_mode *mode,
4211 struct drm_display_mode *adjusted_mode,
4212 intel_clock_t *clock, intel_clock_t *reduced_clock,
2a8f64ca 4213 int num_connectors)
a0c4da24
JB		 4214{
4215 struct drm_device *dev = crtc->dev;
4216 struct drm_i915_private *dev_priv = dev->dev_private;
4217 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4218 int pipe = intel_crtc->pipe;
4219 u32 dpll, mdiv, pdiv;
4220 u32 bestn, bestm1, bestm2, bestp1, bestp2;
2a8f64ca
VP		 4221 bool is_sdvo;
4222 u32 temp;
4223
4224 is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
4225 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
a0c4da24 4226
2a8f64ca
VP		 4227 dpll = DPLL_VGA_MODE_DIS;
4228 dpll |= DPLL_EXT_BUFFER_ENABLE_VLV;
4229 dpll |= DPLL_REFA_CLK_ENABLE_VLV;
4230 dpll |= DPLL_INTEGRATED_CLOCK_VLV;
4231
4232 I915_WRITE(DPLL(pipe), dpll);
4233 POSTING_READ(DPLL(pipe));
a0c4da24
JB		 4234
4235 bestn = clock->n;
4236 bestm1 = clock->m1;
4237 bestm2 = clock->m2;
4238 bestp1 = clock->p1;
4239 bestp2 = clock->p2;
4240
2a8f64ca
VP		 4241 /*
4242 * In Valleyview PLL and program lane counter registers are exposed
4243 * through DPIO interface
4244 */
a0c4da24
JB		 4245 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
4246 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
4247 mdiv |= ((bestn << DPIO_N_SHIFT));
4248 mdiv |= (1 << DPIO_POST_DIV_SHIFT);
4249 mdiv |= (1 << DPIO_K_SHIFT);
4250 mdiv |= DPIO_ENABLE_CALIBRATION;
4251 intel_dpio_write(dev_priv, DPIO_DIV(pipe), mdiv);
4252
4253 intel_dpio_write(dev_priv, DPIO_CORE_CLK(pipe), 0x01000000);
4254
2a8f64ca 4255 pdiv = (1 << DPIO_REFSEL_OVERRIDE) | (5 << DPIO_PLL_MODESEL_SHIFT) |
a0c4da24 4256 (3 << DPIO_BIAS_CURRENT_CTL_SHIFT) | (1<<20) |
2a8f64ca
VP		 4257 (7 << DPIO_PLL_REFCLK_SEL_SHIFT) | (8 << DPIO_DRIVER_CTL_SHIFT) |
4258 (5 << DPIO_CLK_BIAS_CTL_SHIFT);
a0c4da24
JB		 4259 intel_dpio_write(dev_priv, DPIO_REFSFR(pipe), pdiv);
4260
2a8f64ca 4261 intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe), 0x005f003b);
a0c4da24
JB		 4262
4263 dpll |= DPLL_VCO_ENABLE;
4264 I915_WRITE(DPLL(pipe), dpll);
4265 POSTING_READ(DPLL(pipe));
4266 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
4267 DRM_ERROR("DPLL %d failed to lock\n", pipe);
4268
2a8f64ca
VP		 4269 intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x620);
4270
4271 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
4272 intel_dp_set_m_n(crtc, mode, adjusted_mode);
4273
4274 I915_WRITE(DPLL(pipe), dpll);
4275
4276 /* Wait for the clocks to stabilize. */
4277 POSTING_READ(DPLL(pipe));
4278 udelay(150);
a0c4da24 4279
2a8f64ca
VP		 4280 temp = 0;
4281 if (is_sdvo) {
4282 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
a0c4da24
JB		 4283 if (temp > 1)
4284 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
4285 else
4286 temp = 0;
a0c4da24 4287 }
2a8f64ca
VP		 4288 I915_WRITE(DPLL_MD(pipe), temp);
4289 POSTING_READ(DPLL_MD(pipe));
a0c4da24 4290
2a8f64ca
VP		 4291 /* Now program lane control registers */
4292 if(intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)
4293 || intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
4294 {
4295 temp = 0x1000C4;
4296 if(pipe == 1)
4297 temp |= (1 << 21);
4298 intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL1, temp);
4299 }
4300 if(intel_pipe_has_type(crtc,INTEL_OUTPUT_EDP))
4301 {
4302 temp = 0x1000C4;
4303 if(pipe == 1)
4304 temp |= (1 << 21);
4305 intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL2, temp);
4306 }
a0c4da24
JB		 4307}
4308
eb1cbe48
DV		 4309static void i9xx_update_pll(struct drm_crtc *crtc,
4310 struct drm_display_mode *mode,
4311 struct drm_display_mode *adjusted_mode,
4312 intel_clock_t *clock, intel_clock_t *reduced_clock,
4313 int num_connectors)
4314{
4315 struct drm_device *dev = crtc->dev;
4316 struct drm_i915_private *dev_priv = dev->dev_private;
4317 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4318 int pipe = intel_crtc->pipe;
4319 u32 dpll;
4320 bool is_sdvo;
4321
2a8f64ca
VP		 4322 i9xx_update_pll_dividers(crtc, clock, reduced_clock);
4323
eb1cbe48
DV		 4324 is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
4325 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
4326
4327 dpll = DPLL_VGA_MODE_DIS;
4328
4329 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
4330 dpll |= DPLLB_MODE_LVDS;
4331 else
4332 dpll |= DPLLB_MODE_DAC_SERIAL;
4333 if (is_sdvo) {
4334 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4335 if (pixel_multiplier > 1) {
4336 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
4337 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
4338 }
4339 dpll |= DPLL_DVO_HIGH_SPEED;
4340 }
4341 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
4342 dpll |= DPLL_DVO_HIGH_SPEED;
4343
4344 /* compute bitmask from p1 value */
4345 if (IS_PINEVIEW(dev))
4346 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
4347 else {
4348 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4349 if (IS_G4X(dev) && reduced_clock)
4350 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
4351 }
4352 switch (clock->p2) {
4353 case 5:
4354 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
4355 break;
4356 case 7:
4357 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
4358 break;
4359 case 10:
4360 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
4361 break;
4362 case 14:
4363 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
4364 break;
4365 }
4366 if (INTEL_INFO(dev)->gen >= 4)
4367 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
4368
4369 if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
4370 dpll |= PLL_REF_INPUT_TVCLKINBC;
4371 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
4372 /* XXX: just matching BIOS for now */
4373 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
4374 dpll |= 3;
4375 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
4376 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
4377 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
4378 else
4379 dpll |= PLL_REF_INPUT_DREFCLK;
4380
4381 dpll |= DPLL_VCO_ENABLE;
4382 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
4383 POSTING_READ(DPLL(pipe));
4384 udelay(150);
4385
4386 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
4387 * This is an exception to the general rule that mode_set doesn't turn
4388 * things on.
4389 */
4390 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
4391 intel_update_lvds(crtc, clock, adjusted_mode);
4392
4393 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
4394 intel_dp_set_m_n(crtc, mode, adjusted_mode);
4395
4396 I915_WRITE(DPLL(pipe), dpll);
4397
4398 /* Wait for the clocks to stabilize. */
4399 POSTING_READ(DPLL(pipe));
4400 udelay(150);
4401
4402 if (INTEL_INFO(dev)->gen >= 4) {
4403 u32 temp = 0;
4404 if (is_sdvo) {
4405 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
4406 if (temp > 1)
4407 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
4408 else
4409 temp = 0;
4410 }
4411 I915_WRITE(DPLL_MD(pipe), temp);
4412 } else {
4413 /* The pixel multiplier can only be updated once the
4414 * DPLL is enabled and the clocks are stable.
4415 *
4416 * So write it again.
4417 */
4418 I915_WRITE(DPLL(pipe), dpll);
4419 }
4420}
4421
4422static void i8xx_update_pll(struct drm_crtc *crtc,
4423 struct drm_display_mode *adjusted_mode,
2a8f64ca 4424 intel_clock_t *clock, intel_clock_t *reduced_clock,
eb1cbe48
DV		 4425 int num_connectors)
4426{
4427 struct drm_device *dev = crtc->dev;
4428 struct drm_i915_private *dev_priv = dev->dev_private;
4429 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4430 int pipe = intel_crtc->pipe;
4431 u32 dpll;
4432
2a8f64ca
VP		 4433 i9xx_update_pll_dividers(crtc, clock, reduced_clock);
4434
eb1cbe48
DV		 4435 dpll = DPLL_VGA_MODE_DIS;
4436
4437 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
4438 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4439 } else {
4440 if (clock->p1 == 2)
4441 dpll |= PLL_P1_DIVIDE_BY_TWO;
4442 else
4443 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4444 if (clock->p2 == 4)
4445 dpll |= PLL_P2_DIVIDE_BY_4;
4446 }
4447
4448 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
4449 /* XXX: just matching BIOS for now */
4450 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
4451 dpll |= 3;
4452 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
4453 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
4454 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
4455 else
4456 dpll |= PLL_REF_INPUT_DREFCLK;
4457
4458 dpll |= DPLL_VCO_ENABLE;
4459 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
4460 POSTING_READ(DPLL(pipe));
4461 udelay(150);
4462
eb1cbe48
DV		 4463 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
4464 * This is an exception to the general rule that mode_set doesn't turn
4465 * things on.
4466 */
4467 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
4468 intel_update_lvds(crtc, clock, adjusted_mode);
4469
5b5896e4
DV		 4470 I915_WRITE(DPLL(pipe), dpll);
4471
4472 /* Wait for the clocks to stabilize. */
4473 POSTING_READ(DPLL(pipe));
4474 udelay(150);
4475
eb1cbe48
DV		 4476 /* The pixel multiplier can only be updated once the
4477 * DPLL is enabled and the clocks are stable.
4478 *
4479 * So write it again.
4480 */
4481 I915_WRITE(DPLL(pipe), dpll);
4482}
4483
b0e77b9c
PZ		 4484static void intel_set_pipe_timings(struct intel_crtc *intel_crtc,
4485 struct drm_display_mode *mode,
4486 struct drm_display_mode *adjusted_mode)
4487{
4488 struct drm_device *dev = intel_crtc->base.dev;
4489 struct drm_i915_private *dev_priv = dev->dev_private;
4490 enum pipe pipe = intel_crtc->pipe;
4491 uint32_t vsyncshift;
4492
4493 if (!IS_GEN2(dev) && adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
4494 /* the chip adds 2 halflines automatically */
4495 adjusted_mode->crtc_vtotal -= 1;
4496 adjusted_mode->crtc_vblank_end -= 1;
4497 vsyncshift = adjusted_mode->crtc_hsync_start
4498 - adjusted_mode->crtc_htotal / 2;
4499 } else {
4500 vsyncshift = 0;
4501 }
4502
4503 if (INTEL_INFO(dev)->gen > 3)
4504 I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
4505
4506 I915_WRITE(HTOTAL(pipe),
4507 (adjusted_mode->crtc_hdisplay - 1) |
4508 ((adjusted_mode->crtc_htotal - 1) << 16));
4509 I915_WRITE(HBLANK(pipe),
4510 (adjusted_mode->crtc_hblank_start - 1) |
4511 ((adjusted_mode->crtc_hblank_end - 1) << 16));
4512 I915_WRITE(HSYNC(pipe),
4513 (adjusted_mode->crtc_hsync_start - 1) |
4514 ((adjusted_mode->crtc_hsync_end - 1) << 16));
4515
4516 I915_WRITE(VTOTAL(pipe),
4517 (adjusted_mode->crtc_vdisplay - 1) |
4518 ((adjusted_mode->crtc_vtotal - 1) << 16));
4519 I915_WRITE(VBLANK(pipe),
4520 (adjusted_mode->crtc_vblank_start - 1) |
4521 ((adjusted_mode->crtc_vblank_end - 1) << 16));
4522 I915_WRITE(VSYNC(pipe),
4523 (adjusted_mode->crtc_vsync_start - 1) |
4524 ((adjusted_mode->crtc_vsync_end - 1) << 16));
4525
4526 /* pipesrc controls the size that is scaled from, which should
4527 * always be the user's requested size.
4528 */
4529 I915_WRITE(PIPESRC(pipe),
4530 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
4531}
4532
f564048e
EA		 4533static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
4534 struct drm_display_mode *mode,
4535 struct drm_display_mode *adjusted_mode,
4536 int x, int y,
94352cf9 4537 struct drm_framebuffer *fb)
79e53945
JB		 4538{
4539 struct drm_device *dev = crtc->dev;
4540 struct drm_i915_private *dev_priv = dev->dev_private;
4541 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4542 int pipe = intel_crtc->pipe;
80824003 4543 int plane = intel_crtc->plane;
c751ce4f 4544 int refclk, num_connectors = 0;
652c393a 4545 intel_clock_t clock, reduced_clock;
b0e77b9c 4546 u32 dspcntr, pipeconf;
eb1cbe48
DV		 4547 bool ok, has_reduced_clock = false, is_sdvo = false;
4548 bool is_lvds = false, is_tv = false, is_dp = false;
5eddb70b 4549 struct intel_encoder *encoder;
d4906093 4550 const intel_limit_t *limit;
5c3b82e2 4551 int ret;
79e53945 4552
6c2b7c12 4553 for_each_encoder_on_crtc(dev, crtc, encoder) {
5eddb70b 4554 switch (encoder->type) {
79e53945
JB		 4555 case INTEL_OUTPUT_LVDS:
4556 is_lvds = true;
4557 break;
4558 case INTEL_OUTPUT_SDVO:
7d57382e 4559 case INTEL_OUTPUT_HDMI:
79e53945 4560 is_sdvo = true;
5eddb70b 4561 if (encoder->needs_tv_clock)
e2f0ba97 4562 is_tv = true;
79e53945 4563 break;
79e53945
JB		 4564 case INTEL_OUTPUT_TVOUT:
4565 is_tv = true;
4566 break;
a4fc5ed6
KP		 4567 case INTEL_OUTPUT_DISPLAYPORT:
4568 is_dp = true;
4569 break;
79e53945 4570 }
43565a06 4571
c751ce4f 4572 num_connectors++;
79e53945
JB		 4573 }
4574
c65d77d8 4575 refclk = i9xx_get_refclk(crtc, num_connectors);
79e53945 4576
d4906093
ML		 4577 /*
4578 * Returns a set of divisors for the desired target clock with the given
4579 * refclk, or FALSE. The returned values represent the clock equation:
4580 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4581 */
1b894b59 4582 limit = intel_limit(crtc, refclk);
cec2f356
SP		 4583 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
4584 &clock);
79e53945
JB		 4585 if (!ok) {
4586 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5c3b82e2 4587 return -EINVAL;
79e53945
JB		 4588 }
4589
cda4b7d3 4590 /* Ensure that the cursor is valid for the new mode before changing... */
6b383a7f 4591 intel_crtc_update_cursor(crtc, true);
cda4b7d3 4592
ddc9003c 4593 if (is_lvds && dev_priv->lvds_downclock_avail) {
cec2f356
SP		 4594 /*
4595 * Ensure we match the reduced clock's P to the target clock.
4596 * If the clocks don't match, we can't switch the display clock
4597 * by using the FP0/FP1. In such case we will disable the LVDS
4598 * downclock feature.
4599 */
ddc9003c 4600 has_reduced_clock = limit->find_pll(limit, crtc,
5eddb70b
CW		 4601 dev_priv->lvds_downclock,
4602 refclk,
cec2f356 4603 &clock,
5eddb70b 4604 &reduced_clock);
7026d4ac
ZW		 4605 }
4606
c65d77d8
JB		 4607 if (is_sdvo && is_tv)
4608 i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
7026d4ac 4609
eb1cbe48 4610 if (IS_GEN2(dev))
2a8f64ca
VP		 4611 i8xx_update_pll(crtc, adjusted_mode, &clock,
4612 has_reduced_clock ? &reduced_clock : NULL,
4613 num_connectors);
a0c4da24 4614 else if (IS_VALLEYVIEW(dev))
2a8f64ca
VP		 4615 vlv_update_pll(crtc, mode, adjusted_mode, &clock,
4616 has_reduced_clock ? &reduced_clock : NULL,
4617 num_connectors);
79e53945 4618 else
eb1cbe48
DV		 4619 i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
4620 has_reduced_clock ? &reduced_clock : NULL,
4621 num_connectors);
79e53945
JB		 4622
4623 /* setup pipeconf */
5eddb70b 4624 pipeconf = I915_READ(PIPECONF(pipe));
79e53945
JB		 4625
4626 /* Set up the display plane register */
4627 dspcntr = DISPPLANE_GAMMA_ENABLE;
4628
929c77fb
EA		 4629 if (pipe == 0)
4630 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
4631 else
4632 dspcntr |= DISPPLANE_SEL_PIPE_B;
79e53945 4633
a6c45cf0 4634 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
79e53945
JB		 4635 /* Enable pixel doubling when the dot clock is > 90% of the (display)
4636 * core speed.
4637 *
4638 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
4639 * pipe == 0 check?
4640 */
e70236a8
JB		 4641 if (mode->clock >
4642 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
5eddb70b 4643 pipeconf |= PIPECONF_DOUBLE_WIDE;
79e53945 4644 else
5eddb70b 4645 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
79e53945
JB		 4646 }
4647
3b5c78a3
AJ		 4648 /* default to 8bpc */
4649 pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
4650 if (is_dp) {
0c96c65b 4651 if (adjusted_mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
3b5c78a3
AJ		 4652 pipeconf |= PIPECONF_BPP_6 |
4653 PIPECONF_DITHER_EN |
4654 PIPECONF_DITHER_TYPE_SP;
4655 }
4656 }
4657
19c03924
GB		 4658 if (IS_VALLEYVIEW(dev) && intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
4659 if (adjusted_mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
4660 pipeconf |= PIPECONF_BPP_6 |
4661 PIPECONF_ENABLE |
4662 I965_PIPECONF_ACTIVE;
4663 }
4664 }
4665
28c97730 4666 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
79e53945
JB		 4667 drm_mode_debug_printmodeline(mode);
4668
a7516a05
JB		 4669 if (HAS_PIPE_CXSR(dev)) {
4670 if (intel_crtc->lowfreq_avail) {
28c97730 4671 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
652c393a 4672 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
a7516a05 4673 } else {
28c97730 4674 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
652c393a
JB		 4675 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
4676 }
4677 }
4678
617cf884 4679 pipeconf &= ~PIPECONF_INTERLACE_MASK;
dbb02575 4680 if (!IS_GEN2(dev) &&
b0e77b9c 4681 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
734b4157 4682 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
b0e77b9c 4683 else
617cf884 4684 pipeconf |= PIPECONF_PROGRESSIVE;
734b4157 4685
b0e77b9c 4686 intel_set_pipe_timings(intel_crtc, mode, adjusted_mode);
5eddb70b
CW		 4687
4688 /* pipesrc and dspsize control the size that is scaled from,
4689 * which should always be the user's requested size.
79e53945 4690 */
929c77fb
EA		 4691 I915_WRITE(DSPSIZE(plane),
4692 ((mode->vdisplay - 1) << 16) |
4693 (mode->hdisplay - 1));
4694 I915_WRITE(DSPPOS(plane), 0);
2c07245f 4695
f564048e
EA		 4696 I915_WRITE(PIPECONF(pipe), pipeconf);
4697 POSTING_READ(PIPECONF(pipe));
929c77fb 4698 intel_enable_pipe(dev_priv, pipe, false);
f564048e
EA		 4699
4700 intel_wait_for_vblank(dev, pipe);
4701
f564048e
EA		 4702 I915_WRITE(DSPCNTR(plane), dspcntr);
4703 POSTING_READ(DSPCNTR(plane));
4704
94352cf9 4705 ret = intel_pipe_set_base(crtc, x, y, fb);
f564048e
EA		 4706
4707 intel_update_watermarks(dev);
4708
f564048e
EA		 4709 return ret;
4710}
4711
9fb526db
KP		 4712/*
4713 * Initialize reference clocks when the driver loads
4714 */
4715void ironlake_init_pch_refclk(struct drm_device *dev)
13d83a67
JB		 4716{
4717 struct drm_i915_private *dev_priv = dev->dev_private;
4718 struct drm_mode_config *mode_config = &dev->mode_config;
13d83a67 4719 struct intel_encoder *encoder;
13d83a67
JB		 4720 u32 temp;
4721 bool has_lvds = false;
199e5d79
KP		 4722 bool has_cpu_edp = false;
4723 bool has_pch_edp = false;
4724 bool has_panel = false;
99eb6a01
KP		 4725 bool has_ck505 = false;
4726 bool can_ssc = false;
13d83a67
JB		 4727
4728 /* We need to take the global config into account */
199e5d79
KP		 4729 list_for_each_entry(encoder, &mode_config->encoder_list,
4730 base.head) {
4731 switch (encoder->type) {
4732 case INTEL_OUTPUT_LVDS:
4733 has_panel = true;
4734 has_lvds = true;
4735 break;
4736 case INTEL_OUTPUT_EDP:
4737 has_panel = true;
4738 if (intel_encoder_is_pch_edp(&encoder->base))
4739 has_pch_edp = true;
4740 else
4741 has_cpu_edp = true;
4742 break;
13d83a67
JB		 4743 }
4744 }
4745
99eb6a01
KP		 4746 if (HAS_PCH_IBX(dev)) {
4747 has_ck505 = dev_priv->display_clock_mode;
4748 can_ssc = has_ck505;
4749 } else {
4750 has_ck505 = false;
4751 can_ssc = true;
4752 }
4753
4754 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
4755 has_panel, has_lvds, has_pch_edp, has_cpu_edp,
4756 has_ck505);
13d83a67
JB		 4757
4758 /* Ironlake: try to setup display ref clock before DPLL
4759 * enabling. This is only under driver's control after
4760 * PCH B stepping, previous chipset stepping should be
4761 * ignoring this setting.
4762 */
4763 temp = I915_READ(PCH_DREF_CONTROL);
4764 /* Always enable nonspread source */
4765 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
13d83a67 4766
99eb6a01
KP		 4767 if (has_ck505)
4768 temp |= DREF_NONSPREAD_CK505_ENABLE;
4769 else
4770 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
13d83a67 4771
199e5d79
KP		 4772 if (has_panel) {
4773 temp &= ~DREF_SSC_SOURCE_MASK;
4774 temp |= DREF_SSC_SOURCE_ENABLE;
13d83a67 4775
199e5d79 4776 /* SSC must be turned on before enabling the CPU output */
99eb6a01 4777 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
199e5d79 4778 DRM_DEBUG_KMS("Using SSC on panel\n");
13d83a67 4779 temp |= DREF_SSC1_ENABLE;
e77166b5
DV		 4780 } else
4781 temp &= ~DREF_SSC1_ENABLE;
199e5d79
KP		 4782
4783 /* Get SSC going before enabling the outputs */
4784 I915_WRITE(PCH_DREF_CONTROL, temp);
4785 POSTING_READ(PCH_DREF_CONTROL);
4786 udelay(200);
4787
13d83a67
JB		 4788 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
4789
4790 /* Enable CPU source on CPU attached eDP */
199e5d79 4791 if (has_cpu_edp) {
99eb6a01 4792 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
199e5d79 4793 DRM_DEBUG_KMS("Using SSC on eDP\n");
13d83a67 4794 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
199e5d79 4795 }
13d83a67
JB		 4796 else
4797 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
199e5d79
KP		 4798 } else
4799 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
4800
4801 I915_WRITE(PCH_DREF_CONTROL, temp);
4802 POSTING_READ(PCH_DREF_CONTROL);
4803 udelay(200);
4804 } else {
4805 DRM_DEBUG_KMS("Disabling SSC entirely\n");
4806
4807 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
4808
4809 /* Turn off CPU output */
4810 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
4811
4812 I915_WRITE(PCH_DREF_CONTROL, temp);
4813 POSTING_READ(PCH_DREF_CONTROL);
4814 udelay(200);
4815
4816 /* Turn off the SSC source */
4817 temp &= ~DREF_SSC_SOURCE_MASK;
4818 temp |= DREF_SSC_SOURCE_DISABLE;
4819
4820 /* Turn off SSC1 */
4821 temp &= ~ DREF_SSC1_ENABLE;
4822
13d83a67
JB		 4823 I915_WRITE(PCH_DREF_CONTROL, temp);
4824 POSTING_READ(PCH_DREF_CONTROL);
4825 udelay(200);
4826 }
4827}
4828
d9d444cb
JB		 4829static int ironlake_get_refclk(struct drm_crtc *crtc)
4830{
4831 struct drm_device *dev = crtc->dev;
4832 struct drm_i915_private *dev_priv = dev->dev_private;
4833 struct intel_encoder *encoder;
d9d444cb
JB		 4834 struct intel_encoder *edp_encoder = NULL;
4835 int num_connectors = 0;
4836 bool is_lvds = false;
4837
6c2b7c12 4838 for_each_encoder_on_crtc(dev, crtc, encoder) {
d9d444cb
JB		 4839 switch (encoder->type) {
4840 case INTEL_OUTPUT_LVDS:
4841 is_lvds = true;
4842 break;
4843 case INTEL_OUTPUT_EDP:
4844 edp_encoder = encoder;
4845 break;
4846 }
4847 num_connectors++;
4848 }
4849
4850 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4851 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4852 dev_priv->lvds_ssc_freq);
4853 return dev_priv->lvds_ssc_freq * 1000;
4854 }
4855
4856 return 120000;
4857}
4858
c8203565
PZ		 4859static void ironlake_set_pipeconf(struct drm_crtc *crtc,
4860 struct drm_display_mode *adjusted_mode,
4861 bool dither)
4862{
4863 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
4864 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4865 int pipe = intel_crtc->pipe;
4866 uint32_t val;
4867
4868 val = I915_READ(PIPECONF(pipe));
4869
4870 val &= ~PIPE_BPC_MASK;
4871 switch (intel_crtc->bpp) {
4872 case 18:
4873 val |= PIPE_6BPC;
4874 break;
4875 case 24:
4876 val |= PIPE_8BPC;
4877 break;
4878 case 30:
4879 val |= PIPE_10BPC;
4880 break;
4881 case 36:
4882 val |= PIPE_12BPC;
4883 break;
4884 default:
cc769b62
PZ		 4885 /* Case prevented by intel_choose_pipe_bpp_dither. */
4886 BUG();
c8203565
PZ		 4887 }
4888
4889 val &= ~(PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_MASK);
4890 if (dither)
4891 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
4892
4893 val &= ~PIPECONF_INTERLACE_MASK;
4894 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
4895 val |= PIPECONF_INTERLACED_ILK;
4896 else
4897 val |= PIPECONF_PROGRESSIVE;
4898
4899 I915_WRITE(PIPECONF(pipe), val);
4900 POSTING_READ(PIPECONF(pipe));
4901}
4902
ee2b0b38
PZ		 4903static void haswell_set_pipeconf(struct drm_crtc *crtc,
4904 struct drm_display_mode *adjusted_mode,
4905 bool dither)
4906{
4907 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
4908 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
702e7a56 4909 enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
ee2b0b38
PZ		 4910 uint32_t val;
4911
702e7a56 4912 val = I915_READ(PIPECONF(cpu_transcoder));
ee2b0b38
PZ		 4913
4914 val &= ~(PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_MASK);
4915 if (dither)
4916 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
4917
4918 val &= ~PIPECONF_INTERLACE_MASK_HSW;
4919 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
4920 val |= PIPECONF_INTERLACED_ILK;
4921 else
4922 val |= PIPECONF_PROGRESSIVE;
4923
702e7a56
PZ		 4924 I915_WRITE(PIPECONF(cpu_transcoder), val);
4925 POSTING_READ(PIPECONF(cpu_transcoder));
ee2b0b38
PZ		 4926}
4927
6591c6e4
PZ		 4928static bool ironlake_compute_clocks(struct drm_crtc *crtc,
4929 struct drm_display_mode *adjusted_mode,
4930 intel_clock_t *clock,
4931 bool *has_reduced_clock,
4932 intel_clock_t *reduced_clock)
4933{
4934 struct drm_device *dev = crtc->dev;
4935 struct drm_i915_private *dev_priv = dev->dev_private;
4936 struct intel_encoder *intel_encoder;
4937 int refclk;
4938 const intel_limit_t *limit;
4939 bool ret, is_sdvo = false, is_tv = false, is_lvds = false;
4940
4941 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
4942 switch (intel_encoder->type) {
4943 case INTEL_OUTPUT_LVDS:
4944 is_lvds = true;
4945 break;
4946 case INTEL_OUTPUT_SDVO:
4947 case INTEL_OUTPUT_HDMI:
4948 is_sdvo = true;
4949 if (intel_encoder->needs_tv_clock)
4950 is_tv = true;
4951 break;
4952 case INTEL_OUTPUT_TVOUT:
4953 is_tv = true;
4954 break;
4955 }
4956 }
4957
4958 refclk = ironlake_get_refclk(crtc);
4959
4960 /*
4961 * Returns a set of divisors for the desired target clock with the given
4962 * refclk, or FALSE. The returned values represent the clock equation:
4963 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4964 */
4965 limit = intel_limit(crtc, refclk);
4966 ret = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
4967 clock);
4968 if (!ret)
4969 return false;
4970
4971 if (is_lvds && dev_priv->lvds_downclock_avail) {
4972 /*
4973 * Ensure we match the reduced clock's P to the target clock.
4974 * If the clocks don't match, we can't switch the display clock
4975 * by using the FP0/FP1. In such case we will disable the LVDS
4976 * downclock feature.
4977 */
4978 *has_reduced_clock = limit->find_pll(limit, crtc,
4979 dev_priv->lvds_downclock,
4980 refclk,
4981 clock,
4982 reduced_clock);
4983 }
4984
4985 if (is_sdvo && is_tv)
4986 i9xx_adjust_sdvo_tv_clock(adjusted_mode, clock);
4987
4988 return true;
4989}
4990
f48d8f23
PZ		 4991static void ironlake_set_m_n(struct drm_crtc *crtc,
4992 struct drm_display_mode *mode,
4993 struct drm_display_mode *adjusted_mode)
4994{
4995 struct drm_device *dev = crtc->dev;
4996 struct drm_i915_private *dev_priv = dev->dev_private;
4997 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
afe2fcf5 4998 enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
f48d8f23
PZ		 4999 struct intel_encoder *intel_encoder, *edp_encoder = NULL;
5000 struct fdi_m_n m_n = {0};
5001 int target_clock, pixel_multiplier, lane, link_bw;
5002 bool is_dp = false, is_cpu_edp = false;
5003
5004 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
5005 switch (intel_encoder->type) {
5006 case INTEL_OUTPUT_DISPLAYPORT:
5007 is_dp = true;
5008 break;
5009 case INTEL_OUTPUT_EDP:
5010 is_dp = true;
5011 if (!intel_encoder_is_pch_edp(&intel_encoder->base))
5012 is_cpu_edp = true;
5013 edp_encoder = intel_encoder;
5014 break;
5015 }
5016 }
5017
5018 /* FDI link */
5019 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
5020 lane = 0;
5021 /* CPU eDP doesn't require FDI link, so just set DP M/N
5022 according to current link config */
5023 if (is_cpu_edp) {
5024 intel_edp_link_config(edp_encoder, &lane, &link_bw);
5025 } else {
5026 /* FDI is a binary signal running at ~2.7GHz, encoding
5027 * each output octet as 10 bits. The actual frequency
5028 * is stored as a divider into a 100MHz clock, and the
5029 * mode pixel clock is stored in units of 1KHz.
5030 * Hence the bw of each lane in terms of the mode signal
5031 * is:
5032 */
5033 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
5034 }
5035
5036 /* [e]DP over FDI requires target mode clock instead of link clock. */
5037 if (edp_encoder)
5038 target_clock = intel_edp_target_clock(edp_encoder, mode);
5039 else if (is_dp)
5040 target_clock = mode->clock;
5041 else
5042 target_clock = adjusted_mode->clock;
5043
5044 if (!lane) {
5045 /*
5046 * Account for spread spectrum to avoid
5047 * oversubscribing the link. Max center spread
5048 * is 2.5%; use 5% for safety's sake.
5049 */
5050 u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
5051 lane = bps / (link_bw * 8) + 1;
5052 }
5053
5054 intel_crtc->fdi_lanes = lane;
5055
5056 if (pixel_multiplier > 1)
5057 link_bw *= pixel_multiplier;
5058 ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
5059 &m_n);
5060
afe2fcf5
PZ		 5061 I915_WRITE(PIPE_DATA_M1(cpu_transcoder), TU_SIZE(m_n.tu) | m_n.gmch_m);
5062 I915_WRITE(PIPE_DATA_N1(cpu_transcoder), m_n.gmch_n);
5063 I915_WRITE(PIPE_LINK_M1(cpu_transcoder), m_n.link_m);
5064 I915_WRITE(PIPE_LINK_N1(cpu_transcoder), m_n.link_n);
f48d8f23
PZ		 5065}
5066
de13a2e3
PZ		 5067static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
5068 struct drm_display_mode *adjusted_mode,
5069 intel_clock_t *clock, u32 fp)
79e53945 5070{
de13a2e3 5071 struct drm_crtc *crtc = &intel_crtc->base;
79e53945
JB		 5072 struct drm_device *dev = crtc->dev;
5073 struct drm_i915_private *dev_priv = dev->dev_private;
de13a2e3
PZ		 5074 struct intel_encoder *intel_encoder;
5075 uint32_t dpll;
5076 int factor, pixel_multiplier, num_connectors = 0;
5077 bool is_lvds = false, is_sdvo = false, is_tv = false;
5078 bool is_dp = false, is_cpu_edp = false;
79e53945 5079
de13a2e3
PZ		 5080 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
5081 switch (intel_encoder->type) {
79e53945
JB		 5082 case INTEL_OUTPUT_LVDS:
5083 is_lvds = true;
5084 break;
5085 case INTEL_OUTPUT_SDVO:
7d57382e 5086 case INTEL_OUTPUT_HDMI:
79e53945 5087 is_sdvo = true;
de13a2e3 5088 if (intel_encoder->needs_tv_clock)
e2f0ba97 5089 is_tv = true;
79e53945 5090 break;
79e53945
JB		 5091 case INTEL_OUTPUT_TVOUT:
5092 is_tv = true;
5093 break;
a4fc5ed6
KP		 5094 case INTEL_OUTPUT_DISPLAYPORT:
5095 is_dp = true;
5096 break;
32f9d658 5097 case INTEL_OUTPUT_EDP:
e3aef172 5098 is_dp = true;
de13a2e3 5099 if (!intel_encoder_is_pch_edp(&intel_encoder->base))
e3aef172 5100 is_cpu_edp = true;
32f9d658 5101 break;
79e53945 5102 }
43565a06 5103
c751ce4f 5104 num_connectors++;
79e53945
JB		 5105 }
5106
c1858123 5107 /* Enable autotuning of the PLL clock (if permissible) */
8febb297
EA		 5108 factor = 21;
5109 if (is_lvds) {
5110 if ((intel_panel_use_ssc(dev_priv) &&
5111 dev_priv->lvds_ssc_freq == 100) ||
5112 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
5113 factor = 25;
5114 } else if (is_sdvo && is_tv)
5115 factor = 20;
c1858123 5116
de13a2e3 5117 if (clock->m < factor * clock->n)
8febb297 5118 fp |= FP_CB_TUNE;
2c07245f 5119
5eddb70b 5120 dpll = 0;
2c07245f 5121
a07d6787
EA		 5122 if (is_lvds)
5123 dpll |= DPLLB_MODE_LVDS;
5124 else
5125 dpll |= DPLLB_MODE_DAC_SERIAL;
5126 if (is_sdvo) {
de13a2e3 5127 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
a07d6787
EA		 5128 if (pixel_multiplier > 1) {
5129 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
79e53945 5130 }
a07d6787
EA		 5131 dpll |= DPLL_DVO_HIGH_SPEED;
5132 }
e3aef172 5133 if (is_dp && !is_cpu_edp)
a07d6787 5134 dpll |= DPLL_DVO_HIGH_SPEED;
79e53945 5135
a07d6787 5136 /* compute bitmask from p1 value */
de13a2e3 5137 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
a07d6787 5138 /* also FPA1 */
de13a2e3 5139 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
a07d6787 5140
de13a2e3 5141 switch (clock->p2) {
a07d6787
EA		 5142 case 5:
5143 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
5144 break;
5145 case 7:
5146 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
5147 break;
5148 case 10:
5149 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
5150 break;
5151 case 14:
5152 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
5153 break;
79e53945
JB		 5154 }
5155
43565a06
KH		 5156 if (is_sdvo && is_tv)
5157 dpll |= PLL_REF_INPUT_TVCLKINBC;
5158 else if (is_tv)
79e53945 5159 /* XXX: just matching BIOS for now */
43565a06 5160 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
79e53945 5161 dpll |= 3;
a7615030 5162 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
43565a06 5163 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
79e53945
JB		 5164 else
5165 dpll |= PLL_REF_INPUT_DREFCLK;
5166
de13a2e3
PZ		 5167 return dpll;
5168}
5169
5170static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
5171 struct drm_display_mode *mode,
5172 struct drm_display_mode *adjusted_mode,
5173 int x, int y,
5174 struct drm_framebuffer *fb)
5175{
5176 struct drm_device *dev = crtc->dev;
5177 struct drm_i915_private *dev_priv = dev->dev_private;
5178 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5179 int pipe = intel_crtc->pipe;
5180 int plane = intel_crtc->plane;
5181 int num_connectors = 0;
5182 intel_clock_t clock, reduced_clock;
5183 u32 dpll, fp = 0, fp2 = 0;
e2f12b07
PZ		 5184 bool ok, has_reduced_clock = false;
5185 bool is_lvds = false, is_dp = false, is_cpu_edp = false;
de13a2e3
PZ		 5186 struct intel_encoder *encoder;
5187 u32 temp;
5188 int ret;
5189 bool dither;
de13a2e3
PZ		 5190
5191 for_each_encoder_on_crtc(dev, crtc, encoder) {
5192 switch (encoder->type) {
5193 case INTEL_OUTPUT_LVDS:
5194 is_lvds = true;
5195 break;
de13a2e3
PZ		 5196 case INTEL_OUTPUT_DISPLAYPORT:
5197 is_dp = true;
5198 break;
5199 case INTEL_OUTPUT_EDP:
5200 is_dp = true;
e2f12b07 5201 if (!intel_encoder_is_pch_edp(&encoder->base))
de13a2e3
PZ		 5202 is_cpu_edp = true;
5203 break;
5204 }
5205
5206 num_connectors++;
5207 }
5208
5dc5298b
PZ		 5209 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
5210 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
5211
de13a2e3
PZ		 5212 ok = ironlake_compute_clocks(crtc, adjusted_mode, &clock,
5213 &has_reduced_clock, &reduced_clock);
5214 if (!ok) {
5215 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5216 return -EINVAL;
5217 }
5218
5219 /* Ensure that the cursor is valid for the new mode before changing... */
5220 intel_crtc_update_cursor(crtc, true);
5221
5222 /* determine panel color depth */
5223 dither = intel_choose_pipe_bpp_dither(crtc, fb, &intel_crtc->bpp, mode);
5224 if (is_lvds && dev_priv->lvds_dither)
5225 dither = true;
5226
5227 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
5228 if (has_reduced_clock)
5229 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
5230 reduced_clock.m2;
5231
5232 dpll = ironlake_compute_dpll(intel_crtc, adjusted_mode, &clock, fp);
5233
f7cb34d4 5234 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
79e53945
JB		 5235 drm_mode_debug_printmodeline(mode);
5236
5dc5298b
PZ		 5237 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
5238 if (!is_cpu_edp) {
ee7b9f93 5239 struct intel_pch_pll *pll;
4b645f14 5240
ee7b9f93
JB		 5241 pll = intel_get_pch_pll(intel_crtc, dpll, fp);
5242 if (pll == NULL) {
5243 DRM_DEBUG_DRIVER("failed to find PLL for pipe %d\n",
5244 pipe);
4b645f14
JB		 5245 return -EINVAL;
5246 }
ee7b9f93
JB		 5247 } else
5248 intel_put_pch_pll(intel_crtc);
79e53945
JB		 5249
5250 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5251 * This is an exception to the general rule that mode_set doesn't turn
5252 * things on.
5253 */
5254 if (is_lvds) {
fae14981 5255 temp = I915_READ(PCH_LVDS);
5eddb70b 5256 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
7885d205
JB		 5257 if (HAS_PCH_CPT(dev)) {
5258 temp &= ~PORT_TRANS_SEL_MASK;
4b645f14 5259 temp |= PORT_TRANS_SEL_CPT(pipe);
7885d205
JB		 5260 } else {
5261 if (pipe == 1)
5262 temp |= LVDS_PIPEB_SELECT;
5263 else
5264 temp &= ~LVDS_PIPEB_SELECT;
5265 }
4b645f14 5266
a3e17eb8 5267 /* set the corresponsding LVDS_BORDER bit */
5eddb70b 5268 temp |= dev_priv->lvds_border_bits;
79e53945
JB		 5269 /* Set the B0-B3 data pairs corresponding to whether we're going to
5270 * set the DPLLs for dual-channel mode or not.
5271 */
5272 if (clock.p2 == 7)
5eddb70b 5273 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
79e53945 5274 else
5eddb70b 5275 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
79e53945
JB		 5276
5277 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
5278 * appropriately here, but we need to look more thoroughly into how
5279 * panels behave in the two modes.
5280 */
284d5df5 5281 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
aa9b500d 5282 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
284d5df5 5283 temp |= LVDS_HSYNC_POLARITY;
aa9b500d 5284 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
284d5df5 5285 temp |= LVDS_VSYNC_POLARITY;
fae14981 5286 I915_WRITE(PCH_LVDS, temp);
79e53945 5287 }
434ed097 5288
e3aef172 5289 if (is_dp && !is_cpu_edp) {
a4fc5ed6 5290 intel_dp_set_m_n(crtc, mode, adjusted_mode);
8febb297 5291 } else {
8db9d77b 5292 /* For non-DP output, clear any trans DP clock recovery setting.*/
9db4a9c7
JB		 5293 I915_WRITE(TRANSDATA_M1(pipe), 0);
5294 I915_WRITE(TRANSDATA_N1(pipe), 0);
5295 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
5296 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
8db9d77b 5297 }
79e53945 5298
ee7b9f93
JB		 5299 if (intel_crtc->pch_pll) {
5300 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
5eddb70b 5301
32f9d658 5302 /* Wait for the clocks to stabilize. */
ee7b9f93 5303 POSTING_READ(intel_crtc->pch_pll->pll_reg);
32f9d658
ZW		 5304 udelay(150);
5305
8febb297
EA		 5306 /* The pixel multiplier can only be updated once the
5307 * DPLL is enabled and the clocks are stable.
5308 *
5309 * So write it again.
5310 */
ee7b9f93 5311 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
79e53945 5312 }
79e53945 5313
5eddb70b 5314 intel_crtc->lowfreq_avail = false;
ee7b9f93 5315 if (intel_crtc->pch_pll) {
4b645f14 5316 if (is_lvds && has_reduced_clock && i915_powersave) {
ee7b9f93 5317 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp2);
4b645f14 5318 intel_crtc->lowfreq_avail = true;
4b645f14 5319 } else {
ee7b9f93 5320 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp);
652c393a
JB		 5321 }
5322 }
5323
b0e77b9c 5324 intel_set_pipe_timings(intel_crtc, mode, adjusted_mode);
2c07245f 5325
f48d8f23 5326 ironlake_set_m_n(crtc, mode, adjusted_mode);
2c07245f 5327
e3aef172 5328 if (is_cpu_edp)
8febb297 5329 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
2c07245f 5330
c8203565 5331 ironlake_set_pipeconf(crtc, adjusted_mode, dither);
79e53945 5332
9d0498a2 5333 intel_wait_for_vblank(dev, pipe);
79e53945 5334
a1f9e77e
PZ		 5335 /* Set up the display plane register */
5336 I915_WRITE(DSPCNTR(plane), DISPPLANE_GAMMA_ENABLE);
b24e7179 5337 POSTING_READ(DSPCNTR(plane));
79e53945 5338
94352cf9 5339 ret = intel_pipe_set_base(crtc, x, y, fb);
7662c8bd
SL		 5340
5341 intel_update_watermarks(dev);
5342
1f8eeabf
ED		 5343 intel_update_linetime_watermarks(dev, pipe, adjusted_mode);
5344
1f803ee5 5345 return ret;
79e53945
JB		 5346}
5347
09b4ddf9
PZ		 5348static int haswell_crtc_mode_set(struct drm_crtc *crtc,
5349 struct drm_display_mode *mode,
5350 struct drm_display_mode *adjusted_mode,
5351 int x, int y,
5352 struct drm_framebuffer *fb)
5353{
5354 struct drm_device *dev = crtc->dev;
5355 struct drm_i915_private *dev_priv = dev->dev_private;
5356 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5357 int pipe = intel_crtc->pipe;
5358 int plane = intel_crtc->plane;
5359 int num_connectors = 0;
5360 intel_clock_t clock, reduced_clock;
5dc5298b 5361 u32 dpll = 0, fp = 0, fp2 = 0;
09b4ddf9
PZ		 5362 bool ok, has_reduced_clock = false;
5363 bool is_lvds = false, is_dp = false, is_cpu_edp = false;
5364 struct intel_encoder *encoder;
5365 u32 temp;
5366 int ret;
5367 bool dither;
5368
5369 for_each_encoder_on_crtc(dev, crtc, encoder) {
5370 switch (encoder->type) {
5371 case INTEL_OUTPUT_LVDS:
5372 is_lvds = true;
5373 break;
5374 case INTEL_OUTPUT_DISPLAYPORT:
5375 is_dp = true;
5376 break;
5377 case INTEL_OUTPUT_EDP:
5378 is_dp = true;
5379 if (!intel_encoder_is_pch_edp(&encoder->base))
5380 is_cpu_edp = true;
5381 break;
5382 }
5383
5384 num_connectors++;
5385 }
5386
a5c961d1
PZ		 5387 if (is_cpu_edp)
5388 intel_crtc->cpu_transcoder = TRANSCODER_EDP;
5389 else
5390 intel_crtc->cpu_transcoder = pipe;
5391
5dc5298b
PZ		 5392 /* We are not sure yet this won't happen. */
5393 WARN(!HAS_PCH_LPT(dev), "Unexpected PCH type %d\n",
5394 INTEL_PCH_TYPE(dev));
5395
5396 WARN(num_connectors != 1, "%d connectors attached to pipe %c\n",
5397 num_connectors, pipe_name(pipe));
5398
702e7a56 5399 WARN_ON(I915_READ(PIPECONF(intel_crtc->cpu_transcoder)) &
1ce42920
PZ		 5400 (PIPECONF_ENABLE | I965_PIPECONF_ACTIVE));
5401
5402 WARN_ON(I915_READ(DSPCNTR(plane)) & DISPLAY_PLANE_ENABLE);
5403
6441ab5f
PZ		 5404 if (!intel_ddi_pll_mode_set(crtc, adjusted_mode->clock))
5405 return -EINVAL;
5406
5dc5298b
PZ		 5407 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
5408 ok = ironlake_compute_clocks(crtc, adjusted_mode, &clock,
5409 &has_reduced_clock,
5410 &reduced_clock);
5411 if (!ok) {
5412 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5413 return -EINVAL;
5414 }
09b4ddf9
PZ		 5415 }
5416
5417 /* Ensure that the cursor is valid for the new mode before changing... */
5418 intel_crtc_update_cursor(crtc, true);
5419
5420 /* determine panel color depth */
5421 dither = intel_choose_pipe_bpp_dither(crtc, fb, &intel_crtc->bpp, mode);
5422 if (is_lvds && dev_priv->lvds_dither)
5423 dither = true;
5424
09b4ddf9
PZ		 5425 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
5426 drm_mode_debug_printmodeline(mode);
5427
5dc5298b
PZ		 5428 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
5429 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
5430 if (has_reduced_clock)
5431 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
5432 reduced_clock.m2;
5433
5434 dpll = ironlake_compute_dpll(intel_crtc, adjusted_mode, &clock,
5435 fp);
5436
5437 /* CPU eDP is the only output that doesn't need a PCH PLL of its
5438 * own on pre-Haswell/LPT generation */
5439 if (!is_cpu_edp) {
5440 struct intel_pch_pll *pll;
5441
5442 pll = intel_get_pch_pll(intel_crtc, dpll, fp);
5443 if (pll == NULL) {
5444 DRM_DEBUG_DRIVER("failed to find PLL for pipe %d\n",
5445 pipe);
5446 return -EINVAL;
5447 }
5448 } else
5449 intel_put_pch_pll(intel_crtc);
09b4ddf9 5450
5dc5298b
PZ		 5451 /* The LVDS pin pair needs to be on before the DPLLs are
5452 * enabled. This is an exception to the general rule that
5453 * mode_set doesn't turn things on.
5454 */
5455 if (is_lvds) {
5456 temp = I915_READ(PCH_LVDS);
5457 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
5458 if (HAS_PCH_CPT(dev)) {
5459 temp &= ~PORT_TRANS_SEL_MASK;
5460 temp |= PORT_TRANS_SEL_CPT(pipe);
5461 } else {
5462 if (pipe == 1)
5463 temp |= LVDS_PIPEB_SELECT;
5464 else
5465 temp &= ~LVDS_PIPEB_SELECT;
5466 }
09b4ddf9 5467
5dc5298b
PZ		 5468 /* set the corresponsding LVDS_BORDER bit */
5469 temp |= dev_priv->lvds_border_bits;
5470 /* Set the B0-B3 data pairs corresponding to whether
5471 * we're going to set the DPLLs for dual-channel mode or
5472 * not.
5473 */
5474 if (clock.p2 == 7)
5475 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
09b4ddf9 5476 else
5dc5298b
PZ		 5477 temp &= ~(LVDS_B0B3_POWER_UP |
5478 LVDS_CLKB_POWER_UP);
5479
5480 /* It would be nice to set 24 vs 18-bit mode
5481 * (LVDS_A3_POWER_UP) appropriately here, but we need to
5482 * look more thoroughly into how panels behave in the
5483 * two modes.
5484 */
5485 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
5486 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
5487 temp |= LVDS_HSYNC_POLARITY;
5488 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
5489 temp |= LVDS_VSYNC_POLARITY;
5490 I915_WRITE(PCH_LVDS, temp);
09b4ddf9 5491 }
09b4ddf9
PZ		 5492 }
5493
5494 if (is_dp && !is_cpu_edp) {
5495 intel_dp_set_m_n(crtc, mode, adjusted_mode);
5496 } else {
5dc5298b
PZ		 5497 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
5498 /* For non-DP output, clear any trans DP clock recovery
5499 * setting.*/
5500 I915_WRITE(TRANSDATA_M1(pipe), 0);
5501 I915_WRITE(TRANSDATA_N1(pipe), 0);
5502 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
5503 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
5504 }
09b4ddf9
PZ		 5505 }
5506
5507 intel_crtc->lowfreq_avail = false;
5dc5298b
PZ		 5508 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
5509 if (intel_crtc->pch_pll) {
5510 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
5511
5512 /* Wait for the clocks to stabilize. */
5513 POSTING_READ(intel_crtc->pch_pll->pll_reg);
5514 udelay(150);
5515
5516 /* The pixel multiplier can only be updated once the
5517 * DPLL is enabled and the clocks are stable.
5518 *
5519 * So write it again.
5520 */
5521 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
5522 }
5523
5524 if (intel_crtc->pch_pll) {
5525 if (is_lvds && has_reduced_clock && i915_powersave) {
5526 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp2);
5527 intel_crtc->lowfreq_avail = true;
5528 } else {
5529 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp);
5530 }
09b4ddf9
PZ		 5531 }
5532 }
5533
5534 intel_set_pipe_timings(intel_crtc, mode, adjusted_mode);
5535
1eb8dfec
PZ		 5536 if (!is_dp || is_cpu_edp)
5537 ironlake_set_m_n(crtc, mode, adjusted_mode);
09b4ddf9 5538
5dc5298b
PZ		 5539 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
5540 if (is_cpu_edp)
5541 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
09b4ddf9 5542
ee2b0b38 5543 haswell_set_pipeconf(crtc, adjusted_mode, dither);
09b4ddf9 5544
09b4ddf9
PZ		 5545 /* Set up the display plane register */
5546 I915_WRITE(DSPCNTR(plane), DISPPLANE_GAMMA_ENABLE);
5547 POSTING_READ(DSPCNTR(plane));
5548
5549 ret = intel_pipe_set_base(crtc, x, y, fb);
5550
5551 intel_update_watermarks(dev);
5552
5553 intel_update_linetime_watermarks(dev, pipe, adjusted_mode);
5554
5555 return ret;
5556}
5557
f564048e
EA		 5558static int intel_crtc_mode_set(struct drm_crtc *crtc,
5559 struct drm_display_mode *mode,
5560 struct drm_display_mode *adjusted_mode,
5561 int x, int y,
94352cf9 5562 struct drm_framebuffer *fb)
f564048e
EA		 5563{
5564 struct drm_device *dev = crtc->dev;
5565 struct drm_i915_private *dev_priv = dev->dev_private;
0b701d27
EA		 5566 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5567 int pipe = intel_crtc->pipe;
f564048e
EA		 5568 int ret;
5569
0b701d27 5570 drm_vblank_pre_modeset(dev, pipe);
7662c8bd 5571
f564048e 5572 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
94352cf9 5573 x, y, fb);
79e53945 5574 drm_vblank_post_modeset(dev, pipe);
5c3b82e2 5575
1f803ee5 5576 return ret;
79e53945
JB		 5577}
5578
3a9627f4
WF		 5579static bool intel_eld_uptodate(struct drm_connector *connector,
5580 int reg_eldv, uint32_t bits_eldv,
5581 int reg_elda, uint32_t bits_elda,
5582 int reg_edid)
5583{
5584 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5585 uint8_t *eld = connector->eld;
5586 uint32_t i;
5587
5588 i = I915_READ(reg_eldv);
5589 i &= bits_eldv;
5590
5591 if (!eld[0])
5592 return !i;
5593
5594 if (!i)
5595 return false;
5596
5597 i = I915_READ(reg_elda);
5598 i &= ~bits_elda;
5599 I915_WRITE(reg_elda, i);
5600
5601 for (i = 0; i < eld[2]; i++)
5602 if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
5603 return false;
5604
5605 return true;
5606}
5607
e0dac65e
WF		 5608static void g4x_write_eld(struct drm_connector *connector,
5609 struct drm_crtc *crtc)
5610{
5611 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5612 uint8_t *eld = connector->eld;
5613 uint32_t eldv;
5614 uint32_t len;
5615 uint32_t i;
5616
5617 i = I915_READ(G4X_AUD_VID_DID);
5618
5619 if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
5620 eldv = G4X_ELDV_DEVCL_DEVBLC;
5621 else
5622 eldv = G4X_ELDV_DEVCTG;
5623
3a9627f4
WF		 5624 if (intel_eld_uptodate(connector,
5625 G4X_AUD_CNTL_ST, eldv,
5626 G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
5627 G4X_HDMIW_HDMIEDID))
5628 return;
5629
e0dac65e
WF		 5630 i = I915_READ(G4X_AUD_CNTL_ST);
5631 i &= ~(eldv | G4X_ELD_ADDR);
5632 len = (i >> 9) & 0x1f; /* ELD buffer size */
5633 I915_WRITE(G4X_AUD_CNTL_ST, i);
5634
5635 if (!eld[0])
5636 return;
5637
5638 len = min_t(uint8_t, eld[2], len);
5639 DRM_DEBUG_DRIVER("ELD size %d\n", len);
5640 for (i = 0; i < len; i++)
5641 I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
5642
5643 i = I915_READ(G4X_AUD_CNTL_ST);
5644 i |= eldv;
5645 I915_WRITE(G4X_AUD_CNTL_ST, i);
5646}
5647
83358c85
WX		 5648static void haswell_write_eld(struct drm_connector *connector,
5649 struct drm_crtc *crtc)
5650{
5651 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5652 uint8_t *eld = connector->eld;
5653 struct drm_device *dev = crtc->dev;
5654 uint32_t eldv;
5655 uint32_t i;
5656 int len;
5657 int pipe = to_intel_crtc(crtc)->pipe;
5658 int tmp;
5659
5660 int hdmiw_hdmiedid = HSW_AUD_EDID_DATA(pipe);
5661 int aud_cntl_st = HSW_AUD_DIP_ELD_CTRL(pipe);
5662 int aud_config = HSW_AUD_CFG(pipe);
5663 int aud_cntrl_st2 = HSW_AUD_PIN_ELD_CP_VLD;
5664
5665
5666 DRM_DEBUG_DRIVER("HDMI: Haswell Audio initialize....\n");
5667
5668 /* Audio output enable */
5669 DRM_DEBUG_DRIVER("HDMI audio: enable codec\n");
5670 tmp = I915_READ(aud_cntrl_st2);
5671 tmp |= (AUDIO_OUTPUT_ENABLE_A << (pipe * 4));
5672 I915_WRITE(aud_cntrl_st2, tmp);
5673
5674 /* Wait for 1 vertical blank */
5675 intel_wait_for_vblank(dev, pipe);
5676
5677 /* Set ELD valid state */
5678 tmp = I915_READ(aud_cntrl_st2);
5679 DRM_DEBUG_DRIVER("HDMI audio: pin eld vld status=0x%8x\n", tmp);
5680 tmp |= (AUDIO_ELD_VALID_A << (pipe * 4));
5681 I915_WRITE(aud_cntrl_st2, tmp);
5682 tmp = I915_READ(aud_cntrl_st2);
5683 DRM_DEBUG_DRIVER("HDMI audio: eld vld status=0x%8x\n", tmp);
5684
5685 /* Enable HDMI mode */
5686 tmp = I915_READ(aud_config);
5687 DRM_DEBUG_DRIVER("HDMI audio: audio conf: 0x%8x\n", tmp);
5688 /* clear N_programing_enable and N_value_index */
5689 tmp &= ~(AUD_CONFIG_N_VALUE_INDEX | AUD_CONFIG_N_PROG_ENABLE);
5690 I915_WRITE(aud_config, tmp);
5691
5692 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(pipe));
5693
5694 eldv = AUDIO_ELD_VALID_A << (pipe * 4);
5695
5696 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
5697 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
5698 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
5699 I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
5700 } else
5701 I915_WRITE(aud_config, 0);
5702
5703 if (intel_eld_uptodate(connector,
5704 aud_cntrl_st2, eldv,
5705 aud_cntl_st, IBX_ELD_ADDRESS,
5706 hdmiw_hdmiedid))
5707 return;
5708
5709 i = I915_READ(aud_cntrl_st2);
5710 i &= ~eldv;
5711 I915_WRITE(aud_cntrl_st2, i);
5712
5713 if (!eld[0])
5714 return;
5715
5716 i = I915_READ(aud_cntl_st);
5717 i &= ~IBX_ELD_ADDRESS;
5718 I915_WRITE(aud_cntl_st, i);
5719 i = (i >> 29) & DIP_PORT_SEL_MASK; /* DIP_Port_Select, 0x1 = PortB */
5720 DRM_DEBUG_DRIVER("port num:%d\n", i);
5721
5722 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
5723 DRM_DEBUG_DRIVER("ELD size %d\n", len);
5724 for (i = 0; i < len; i++)
5725 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
5726
5727 i = I915_READ(aud_cntrl_st2);
5728 i |= eldv;
5729 I915_WRITE(aud_cntrl_st2, i);
5730
5731}
5732
e0dac65e
WF		 5733static void ironlake_write_eld(struct drm_connector *connector,
5734 struct drm_crtc *crtc)
5735{
5736 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5737 uint8_t *eld = connector->eld;
5738 uint32_t eldv;
5739 uint32_t i;
5740 int len;
5741 int hdmiw_hdmiedid;
b6daa025 5742 int aud_config;
e0dac65e
WF		 5743 int aud_cntl_st;
5744 int aud_cntrl_st2;
9b138a83 5745 int pipe = to_intel_crtc(crtc)->pipe;
e0dac65e 5746
b3f33cbf 5747 if (HAS_PCH_IBX(connector->dev)) {
9b138a83
WX		 5748 hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID(pipe);
5749 aud_config = IBX_AUD_CFG(pipe);
5750 aud_cntl_st = IBX_AUD_CNTL_ST(pipe);
1202b4c6 5751 aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
e0dac65e 5752 } else {
9b138a83
WX		 5753 hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID(pipe);
5754 aud_config = CPT_AUD_CFG(pipe);
5755 aud_cntl_st = CPT_AUD_CNTL_ST(pipe);
1202b4c6 5756 aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
e0dac65e
WF		 5757 }
5758
9b138a83 5759 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(pipe));
e0dac65e
WF		 5760
5761 i = I915_READ(aud_cntl_st);
9b138a83 5762 i = (i >> 29) & DIP_PORT_SEL_MASK; /* DIP_Port_Select, 0x1 = PortB */
e0dac65e
WF		 5763 if (!i) {
5764 DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
5765 /* operate blindly on all ports */
1202b4c6
WF		 5766 eldv = IBX_ELD_VALIDB;
5767 eldv |= IBX_ELD_VALIDB << 4;
5768 eldv |= IBX_ELD_VALIDB << 8;
e0dac65e
WF		 5769 } else {
5770 DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
1202b4c6 5771 eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
e0dac65e
WF		 5772 }
5773
3a9627f4
WF		 5774 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
5775 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
5776 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
b6daa025
WF		 5777 I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
5778 } else
5779 I915_WRITE(aud_config, 0);
e0dac65e 5780
3a9627f4
WF		 5781 if (intel_eld_uptodate(connector,
5782 aud_cntrl_st2, eldv,
5783 aud_cntl_st, IBX_ELD_ADDRESS,
5784 hdmiw_hdmiedid))
5785 return;
5786
e0dac65e
WF		 5787 i = I915_READ(aud_cntrl_st2);
5788 i &= ~eldv;
5789 I915_WRITE(aud_cntrl_st2, i);
5790
5791 if (!eld[0])
5792 return;
5793
e0dac65e 5794 i = I915_READ(aud_cntl_st);
1202b4c6 5795 i &= ~IBX_ELD_ADDRESS;
e0dac65e
WF		 5796 I915_WRITE(aud_cntl_st, i);
5797
5798 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
5799 DRM_DEBUG_DRIVER("ELD size %d\n", len);
5800 for (i = 0; i < len; i++)
5801 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
5802
5803 i = I915_READ(aud_cntrl_st2);
5804 i |= eldv;
5805 I915_WRITE(aud_cntrl_st2, i);
5806}
5807
5808void intel_write_eld(struct drm_encoder *encoder,
5809 struct drm_display_mode *mode)
5810{
5811 struct drm_crtc *crtc = encoder->crtc;
5812 struct drm_connector *connector;
5813 struct drm_device *dev = encoder->dev;
5814 struct drm_i915_private *dev_priv = dev->dev_private;
5815
5816 connector = drm_select_eld(encoder, mode);
5817 if (!connector)
5818 return;
5819
5820 DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5821 connector->base.id,
5822 drm_get_connector_name(connector),
5823 connector->encoder->base.id,
5824 drm_get_encoder_name(connector->encoder));
5825
5826 connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
5827
5828 if (dev_priv->display.write_eld)
5829 dev_priv->display.write_eld(connector, crtc);
5830}
5831
79e53945
JB		 5832/** Loads the palette/gamma unit for the CRTC with the prepared values */
5833void intel_crtc_load_lut(struct drm_crtc *crtc)
5834{
5835 struct drm_device *dev = crtc->dev;
5836 struct drm_i915_private *dev_priv = dev->dev_private;
5837 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9db4a9c7 5838 int palreg = PALETTE(intel_crtc->pipe);
79e53945
JB		 5839 int i;
5840
5841 /* The clocks have to be on to load the palette. */
aed3f09d 5842 if (!crtc->enabled || !intel_crtc->active)
79e53945
JB		 5843 return;
5844
f2b115e6 5845 /* use legacy palette for Ironlake */
bad720ff 5846 if (HAS_PCH_SPLIT(dev))
9db4a9c7 5847 palreg = LGC_PALETTE(intel_crtc->pipe);
2c07245f 5848
79e53945
JB		 5849 for (i = 0; i < 256; i++) {
5850 I915_WRITE(palreg + 4 * i,
5851 (intel_crtc->lut_r[i] << 16) |
5852 (intel_crtc->lut_g[i] << 8) |
5853 intel_crtc->lut_b[i]);
5854 }
5855}
5856
560b85bb
CW		 5857static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
5858{
5859 struct drm_device *dev = crtc->dev;
5860 struct drm_i915_private *dev_priv = dev->dev_private;
5861 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5862 bool visible = base != 0;
5863 u32 cntl;
5864
5865 if (intel_crtc->cursor_visible == visible)
5866 return;
5867
9db4a9c7 5868 cntl = I915_READ(_CURACNTR);
560b85bb
CW		 5869 if (visible) {
5870 /* On these chipsets we can only modify the base whilst
5871 * the cursor is disabled.
5872 */
9db4a9c7 5873 I915_WRITE(_CURABASE, base);
560b85bb
CW		 5874
5875 cntl &= ~(CURSOR_FORMAT_MASK);
5876 /* XXX width must be 64, stride 256 => 0x00 << 28 */
5877 cntl |= CURSOR_ENABLE |
5878 CURSOR_GAMMA_ENABLE |
5879 CURSOR_FORMAT_ARGB;
5880 } else
5881 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
9db4a9c7 5882 I915_WRITE(_CURACNTR, cntl);
560b85bb
CW		 5883
5884 intel_crtc->cursor_visible = visible;
5885}
5886
5887static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
5888{
5889 struct drm_device *dev = crtc->dev;
5890 struct drm_i915_private *dev_priv = dev->dev_private;
5891 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5892 int pipe = intel_crtc->pipe;
5893 bool visible = base != 0;
5894
5895 if (intel_crtc->cursor_visible != visible) {
548f245b 5896 uint32_t cntl = I915_READ(CURCNTR(pipe));
560b85bb
CW		 5897 if (base) {
5898 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
5899 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
5900 cntl |= pipe << 28; /* Connect to correct pipe */
5901 } else {
5902 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
5903 cntl |= CURSOR_MODE_DISABLE;
5904 }
9db4a9c7 5905 I915_WRITE(CURCNTR(pipe), cntl);
560b85bb
CW		 5906
5907 intel_crtc->cursor_visible = visible;
5908 }
5909 /* and commit changes on next vblank */
9db4a9c7 5910 I915_WRITE(CURBASE(pipe), base);
560b85bb
CW		 5911}
5912
65a21cd6
JB		 5913static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
5914{
5915 struct drm_device *dev = crtc->dev;
5916 struct drm_i915_private *dev_priv = dev->dev_private;
5917 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5918 int pipe = intel_crtc->pipe;
5919 bool visible = base != 0;
5920
5921 if (intel_crtc->cursor_visible != visible) {
5922 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
5923 if (base) {
5924 cntl &= ~CURSOR_MODE;
5925 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
5926 } else {
5927 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
5928 cntl |= CURSOR_MODE_DISABLE;
5929 }
5930 I915_WRITE(CURCNTR_IVB(pipe), cntl);
5931
5932 intel_crtc->cursor_visible = visible;
5933 }
5934 /* and commit changes on next vblank */
5935 I915_WRITE(CURBASE_IVB(pipe), base);
5936}
5937
cda4b7d3 5938/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
6b383a7f
CW		 5939static void intel_crtc_update_cursor(struct drm_crtc *crtc,
5940 bool on)
cda4b7d3
CW		 5941{
5942 struct drm_device *dev = crtc->dev;
5943 struct drm_i915_private *dev_priv = dev->dev_private;
5944 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5945 int pipe = intel_crtc->pipe;
5946 int x = intel_crtc->cursor_x;
5947 int y = intel_crtc->cursor_y;
560b85bb 5948 u32 base, pos;
cda4b7d3
CW		 5949 bool visible;
5950
5951 pos = 0;
5952
6b383a7f 5953 if (on && crtc->enabled && crtc->fb) {
cda4b7d3
CW		 5954 base = intel_crtc->cursor_addr;
5955 if (x > (int) crtc->fb->width)
5956 base = 0;
5957
5958 if (y > (int) crtc->fb->height)
5959 base = 0;
5960 } else
5961 base = 0;
5962
5963 if (x < 0) {
5964 if (x + intel_crtc->cursor_width < 0)
5965 base = 0;
5966
5967 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
5968 x = -x;
5969 }
5970 pos |= x << CURSOR_X_SHIFT;
5971
5972 if (y < 0) {
5973 if (y + intel_crtc->cursor_height < 0)
5974 base = 0;
5975
5976 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
5977 y = -y;
5978 }
5979 pos |= y << CURSOR_Y_SHIFT;
5980
5981 visible = base != 0;
560b85bb 5982 if (!visible && !intel_crtc->cursor_visible)
cda4b7d3
CW		 5983 return;
5984
0cd83aa9 5985 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
65a21cd6
JB		 5986 I915_WRITE(CURPOS_IVB(pipe), pos);
5987 ivb_update_cursor(crtc, base);
5988 } else {
5989 I915_WRITE(CURPOS(pipe), pos);
5990 if (IS_845G(dev) || IS_I865G(dev))
5991 i845_update_cursor(crtc, base);
5992 else
5993 i9xx_update_cursor(crtc, base);
5994 }
cda4b7d3
CW		 5995}
5996
79e53945 5997static int intel_crtc_cursor_set(struct drm_crtc *crtc,
05394f39 5998 struct drm_file *file,
79e53945
JB		 5999 uint32_t handle,
6000 uint32_t width, uint32_t height)
6001{
6002 struct drm_device *dev = crtc->dev;
6003 struct drm_i915_private *dev_priv = dev->dev_private;
6004 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
05394f39 6005 struct drm_i915_gem_object *obj;
cda4b7d3 6006 uint32_t addr;
3f8bc370 6007 int ret;
79e53945 6008
79e53945
JB		 6009 /* if we want to turn off the cursor ignore width and height */
6010 if (!handle) {
28c97730 6011 DRM_DEBUG_KMS("cursor off\n");
3f8bc370 6012 addr = 0;
05394f39 6013 obj = NULL;
5004417d 6014 mutex_lock(&dev->struct_mutex);
3f8bc370 6015 goto finish;
79e53945
JB		 6016 }
6017
6018 /* Currently we only support 64x64 cursors */
6019 if (width != 64 || height != 64) {
6020 DRM_ERROR("we currently only support 64x64 cursors\n");
6021 return -EINVAL;
6022 }
6023
05394f39 6024 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
c8725226 6025 if (&obj->base == NULL)
79e53945
JB		 6026 return -ENOENT;
6027
05394f39 6028 if (obj->base.size < width * height * 4) {
79e53945 6029 DRM_ERROR("buffer is to small\n");
34b8686e
DA		 6030 ret = -ENOMEM;
6031 goto fail;
79e53945
JB		 6032 }
6033
71acb5eb 6034 /* we only need to pin inside GTT if cursor is non-phy */
7f9872e0 6035 mutex_lock(&dev->struct_mutex);
b295d1b6 6036 if (!dev_priv->info->cursor_needs_physical) {
d9e86c0e
CW		 6037 if (obj->tiling_mode) {
6038 DRM_ERROR("cursor cannot be tiled\n");
6039 ret = -EINVAL;
6040 goto fail_locked;
6041 }
6042
2da3b9b9 6043 ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
e7b526bb
CW		 6044 if (ret) {
6045 DRM_ERROR("failed to move cursor bo into the GTT\n");
2da3b9b9 6046 goto fail_locked;
e7b526bb
CW		 6047 }
6048
d9e86c0e
CW		 6049 ret = i915_gem_object_put_fence(obj);
6050 if (ret) {
2da3b9b9 6051 DRM_ERROR("failed to release fence for cursor");
d9e86c0e
CW		 6052 goto fail_unpin;
6053 }
6054
05394f39 6055 addr = obj->gtt_offset;
71acb5eb 6056 } else {
6eeefaf3 6057 int align = IS_I830(dev) ? 16 * 1024 : 256;
05394f39 6058 ret = i915_gem_attach_phys_object(dev, obj,
6eeefaf3
CW		 6059 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
6060 align);
71acb5eb
DA		 6061 if (ret) {
6062 DRM_ERROR("failed to attach phys object\n");
7f9872e0 6063 goto fail_locked;
71acb5eb 6064 }
05394f39 6065 addr = obj->phys_obj->handle->busaddr;
3f8bc370
KH		 6066 }
6067
a6c45cf0 6068 if (IS_GEN2(dev))
14b60391
JB		 6069 I915_WRITE(CURSIZE, (height << 12) | width);
6070
3f8bc370 6071 finish:
3f8bc370 6072 if (intel_crtc->cursor_bo) {
b295d1b6 6073 if (dev_priv->info->cursor_needs_physical) {
05394f39 6074 if (intel_crtc->cursor_bo != obj)
71acb5eb
DA		 6075 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
6076 } else
6077 i915_gem_object_unpin(intel_crtc->cursor_bo);
05394f39 6078 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
3f8bc370 6079 }
80824003 6080
7f9872e0 6081 mutex_unlock(&dev->struct_mutex);
3f8bc370
KH		 6082
6083 intel_crtc->cursor_addr = addr;
05394f39 6084 intel_crtc->cursor_bo = obj;
cda4b7d3
CW		 6085 intel_crtc->cursor_width = width;
6086 intel_crtc->cursor_height = height;
6087
6b383a7f 6088 intel_crtc_update_cursor(crtc, true);
3f8bc370 6089
79e53945 6090 return 0;
e7b526bb 6091fail_unpin:
05394f39 6092 i915_gem_object_unpin(obj);
7f9872e0 6093fail_locked:
34b8686e 6094 mutex_unlock(&dev->struct_mutex);
bc9025bd 6095fail:
05394f39 6096 drm_gem_object_unreference_unlocked(&obj->base);
34b8686e 6097 return ret;
79e53945
JB		 6098}
6099
6100static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
6101{
79e53945 6102 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
79e53945 6103
cda4b7d3
CW		 6104 intel_crtc->cursor_x = x;
6105 intel_crtc->cursor_y = y;
652c393a 6106
6b383a7f 6107 intel_crtc_update_cursor(crtc, true);
79e53945
JB		 6108
6109 return 0;
6110}
6111
6112/** Sets the color ramps on behalf of RandR */
6113void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
6114 u16 blue, int regno)
6115{
6116 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6117
6118 intel_crtc->lut_r[regno] = red >> 8;
6119 intel_crtc->lut_g[regno] = green >> 8;
6120 intel_crtc->lut_b[regno] = blue >> 8;
6121}
6122
b8c00ac5
DA		 6123void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
6124 u16 *blue, int regno)
6125{
6126 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6127
6128 *red = intel_crtc->lut_r[regno] << 8;
6129 *green = intel_crtc->lut_g[regno] << 8;
6130 *blue = intel_crtc->lut_b[regno] << 8;
6131}
6132
79e53945 6133static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
7203425a 6134 u16 *blue, uint32_t start, uint32_t size)
79e53945 6135{
7203425a 6136 int end = (start + size > 256) ? 256 : start + size, i;
79e53945 6137 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
79e53945 6138
7203425a 6139 for (i = start; i < end; i++) {
79e53945
JB		 6140 intel_crtc->lut_r[i] = red[i] >> 8;
6141 intel_crtc->lut_g[i] = green[i] >> 8;
6142 intel_crtc->lut_b[i] = blue[i] >> 8;
6143 }
6144
6145 intel_crtc_load_lut(crtc);
6146}
6147
6148/**
6149 * Get a pipe with a simple mode set on it for doing load-based monitor
6150 * detection.
6151 *
6152 * It will be up to the load-detect code to adjust the pipe as appropriate for
c751ce4f 6153 * its requirements. The pipe will be connected to no other encoders.
79e53945 6154 *
c751ce4f 6155 * Currently this code will only succeed if there is a pipe with no encoders
79e53945
JB		 6156 * configured for it. In the future, it could choose to temporarily disable
6157 * some outputs to free up a pipe for its use.
6158 *
6159 * \return crtc, or NULL if no pipes are available.
6160 */
6161
6162/* VESA 640x480x72Hz mode to set on the pipe */
6163static struct drm_display_mode load_detect_mode = {
6164 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
6165 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
6166};
6167
d2dff872
CW		 6168static struct drm_framebuffer *
6169intel_framebuffer_create(struct drm_device *dev,
308e5bcb 6170 struct drm_mode_fb_cmd2 *mode_cmd,
d2dff872
CW		 6171 struct drm_i915_gem_object *obj)
6172{
6173 struct intel_framebuffer *intel_fb;
6174 int ret;
6175
6176 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
6177 if (!intel_fb) {
6178 drm_gem_object_unreference_unlocked(&obj->base);
6179 return ERR_PTR(-ENOMEM);
6180 }
6181
6182 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
6183 if (ret) {
6184 drm_gem_object_unreference_unlocked(&obj->base);
6185 kfree(intel_fb);
6186 return ERR_PTR(ret);
6187 }
6188
6189 return &intel_fb->base;
6190}
6191
6192static u32
6193intel_framebuffer_pitch_for_width(int width, int bpp)
6194{
6195 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
6196 return ALIGN(pitch, 64);
6197}
6198
6199static u32
6200intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
6201{
6202 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
6203 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
6204}
6205
6206static struct drm_framebuffer *
6207intel_framebuffer_create_for_mode(struct drm_device *dev,
6208 struct drm_display_mode *mode,
6209 int depth, int bpp)
6210{
6211 struct drm_i915_gem_object *obj;
308e5bcb 6212 struct drm_mode_fb_cmd2 mode_cmd;
d2dff872
CW		 6213
6214 obj = i915_gem_alloc_object(dev,
6215 intel_framebuffer_size_for_mode(mode, bpp));
6216 if (obj == NULL)
6217 return ERR_PTR(-ENOMEM);
6218
6219 mode_cmd.width = mode->hdisplay;
6220 mode_cmd.height = mode->vdisplay;
308e5bcb
JB		 6221 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
6222 bpp);
5ca0c34a 6223 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
d2dff872
CW		 6224
6225 return intel_framebuffer_create(dev, &mode_cmd, obj);
6226}
6227
6228static struct drm_framebuffer *
6229mode_fits_in_fbdev(struct drm_device *dev,
6230 struct drm_display_mode *mode)
6231{
6232 struct drm_i915_private *dev_priv = dev->dev_private;
6233 struct drm_i915_gem_object *obj;
6234 struct drm_framebuffer *fb;
6235
6236 if (dev_priv->fbdev == NULL)
6237 return NULL;
6238
6239 obj = dev_priv->fbdev->ifb.obj;
6240 if (obj == NULL)
6241 return NULL;
6242
6243 fb = &dev_priv->fbdev->ifb.base;
01f2c773
VS		 6244 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
6245 fb->bits_per_pixel))
d2dff872
CW		 6246 return NULL;
6247
01f2c773 6248 if (obj->base.size < mode->vdisplay * fb->pitches[0])
d2dff872
CW		 6249 return NULL;
6250
6251 return fb;
6252}
6253
d2434ab7 6254bool intel_get_load_detect_pipe(struct drm_connector *connector,
7173188d 6255 struct drm_display_mode *mode,
8261b191 6256 struct intel_load_detect_pipe *old)
79e53945
JB		 6257{
6258 struct intel_crtc *intel_crtc;
d2434ab7
DV		 6259 struct intel_encoder *intel_encoder =
6260 intel_attached_encoder(connector);
79e53945 6261 struct drm_crtc *possible_crtc;
4ef69c7a 6262 struct drm_encoder *encoder = &intel_encoder->base;
79e53945
JB		 6263 struct drm_crtc *crtc = NULL;
6264 struct drm_device *dev = encoder->dev;
94352cf9 6265 struct drm_framebuffer *fb;
79e53945
JB		 6266 int i = -1;
6267
d2dff872
CW		 6268 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6269 connector->base.id, drm_get_connector_name(connector),
6270 encoder->base.id, drm_get_encoder_name(encoder));
6271
79e53945
JB		 6272 /*
6273 * Algorithm gets a little messy:
7a5e4805 6274 *
79e53945
JB		 6275 * - if the connector already has an assigned crtc, use it (but make
6276 * sure it's on first)
7a5e4805 6277 *
79e53945
JB		 6278 * - try to find the first unused crtc that can drive this connector,
6279 * and use that if we find one
79e53945
JB		 6280 */
6281
6282 /* See if we already have a CRTC for this connector */
6283 if (encoder->crtc) {
6284 crtc = encoder->crtc;
8261b191 6285
24218aac 6286 old->dpms_mode = connector->dpms;
8261b191
CW		 6287 old->load_detect_temp = false;
6288
6289 /* Make sure the crtc and connector are running */
24218aac
DV		 6290 if (connector->dpms != DRM_MODE_DPMS_ON)
6291 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
8261b191 6292
7173188d 6293 return true;
79e53945
JB		 6294 }
6295
6296 /* Find an unused one (if possible) */
6297 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
6298 i++;
6299 if (!(encoder->possible_crtcs & (1 << i)))
6300 continue;
6301 if (!possible_crtc->enabled) {
6302 crtc = possible_crtc;
6303 break;
6304 }
79e53945
JB		 6305 }
6306
6307 /*
6308 * If we didn't find an unused CRTC, don't use any.
6309 */
6310 if (!crtc) {
7173188d
CW		 6311 DRM_DEBUG_KMS("no pipe available for load-detect\n");
6312 return false;
79e53945
JB		 6313 }
6314
fc303101
DV		 6315 intel_encoder->new_crtc = to_intel_crtc(crtc);
6316 to_intel_connector(connector)->new_encoder = intel_encoder;
79e53945
JB		 6317
6318 intel_crtc = to_intel_crtc(crtc);
24218aac 6319 old->dpms_mode = connector->dpms;
8261b191 6320 old->load_detect_temp = true;
d2dff872 6321 old->release_fb = NULL;
79e53945 6322
6492711d
CW		 6323 if (!mode)
6324 mode = &load_detect_mode;
79e53945 6325
d2dff872
CW		 6326 /* We need a framebuffer large enough to accommodate all accesses
6327 * that the plane may generate whilst we perform load detection.
6328 * We can not rely on the fbcon either being present (we get called
6329 * during its initialisation to detect all boot displays, or it may
6330 * not even exist) or that it is large enough to satisfy the
6331 * requested mode.
6332 */
94352cf9
DV		 6333 fb = mode_fits_in_fbdev(dev, mode);
6334 if (fb == NULL) {
d2dff872 6335 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
94352cf9
DV		 6336 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
6337 old->release_fb = fb;
d2dff872
CW		 6338 } else
6339 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
94352cf9 6340 if (IS_ERR(fb)) {
d2dff872 6341 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
24218aac 6342 goto fail;
79e53945 6343 }
79e53945 6344
94352cf9 6345 if (!intel_set_mode(crtc, mode, 0, 0, fb)) {
6492711d 6346 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
d2dff872
CW		 6347 if (old->release_fb)
6348 old->release_fb->funcs->destroy(old->release_fb);
24218aac 6349 goto fail;
79e53945 6350 }
7173188d 6351
79e53945 6352 /* let the connector get through one full cycle before testing */
9d0498a2 6353 intel_wait_for_vblank(dev, intel_crtc->pipe);
79e53945 6354
7173188d 6355 return true;
24218aac
DV		 6356fail:
6357 connector->encoder = NULL;
6358 encoder->crtc = NULL;
24218aac 6359 return false;
79e53945
JB		 6360}
6361
d2434ab7 6362void intel_release_load_detect_pipe(struct drm_connector *connector,
8261b191 6363 struct intel_load_detect_pipe *old)
79e53945 6364{
d2434ab7
DV		 6365 struct intel_encoder *intel_encoder =
6366 intel_attached_encoder(connector);
4ef69c7a 6367 struct drm_encoder *encoder = &intel_encoder->base;
79e53945 6368
d2dff872
CW		 6369 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6370 connector->base.id, drm_get_connector_name(connector),
6371 encoder->base.id, drm_get_encoder_name(encoder));
6372
8261b191 6373 if (old->load_detect_temp) {
fc303101
DV		 6374 struct drm_crtc *crtc = encoder->crtc;
6375
6376 to_intel_connector(connector)->new_encoder = NULL;
6377 intel_encoder->new_crtc = NULL;
6378 intel_set_mode(crtc, NULL, 0, 0, NULL);
d2dff872
CW		 6379
6380 if (old->release_fb)
6381 old->release_fb->funcs->destroy(old->release_fb);
6382
0622a53c 6383 return;
79e53945
JB		 6384 }
6385
c751ce4f 6386 /* Switch crtc and encoder back off if necessary */
24218aac
DV		 6387 if (old->dpms_mode != DRM_MODE_DPMS_ON)
6388 connector->funcs->dpms(connector, old->dpms_mode);
79e53945
JB		 6389}
6390
6391/* Returns the clock of the currently programmed mode of the given pipe. */
6392static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
6393{
6394 struct drm_i915_private *dev_priv = dev->dev_private;
6395 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6396 int pipe = intel_crtc->pipe;
548f245b 6397 u32 dpll = I915_READ(DPLL(pipe));
79e53945
JB		 6398 u32 fp;
6399 intel_clock_t clock;
6400
6401 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
39adb7a5 6402 fp = I915_READ(FP0(pipe));
79e53945 6403 else
39adb7a5 6404 fp = I915_READ(FP1(pipe));
79e53945
JB		 6405
6406 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
f2b115e6
AJ		 6407 if (IS_PINEVIEW(dev)) {
6408 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
6409 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
2177832f
SL		 6410 } else {
6411 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
6412 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
6413 }
6414
a6c45cf0 6415 if (!IS_GEN2(dev)) {
f2b115e6
AJ		 6416 if (IS_PINEVIEW(dev))
6417 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
6418 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
2177832f
SL		 6419 else
6420 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
79e53945
JB		 6421 DPLL_FPA01_P1_POST_DIV_SHIFT);
6422
6423 switch (dpll & DPLL_MODE_MASK) {
6424 case DPLLB_MODE_DAC_SERIAL:
6425 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
6426 5 : 10;
6427 break;
6428 case DPLLB_MODE_LVDS:
6429 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
6430 7 : 14;
6431 break;
6432 default:
28c97730 6433 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
79e53945
JB		 6434 "mode\n", (int)(dpll & DPLL_MODE_MASK));
6435 return 0;
6436 }
6437
6438 /* XXX: Handle the 100Mhz refclk */
2177832f 6439 intel_clock(dev, 96000, &clock);
79e53945
JB		 6440 } else {
6441 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
6442
6443 if (is_lvds) {
6444 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
6445 DPLL_FPA01_P1_POST_DIV_SHIFT);
6446 clock.p2 = 14;
6447
6448 if ((dpll & PLL_REF_INPUT_MASK) ==
6449 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
6450 /* XXX: might not be 66MHz */
2177832f 6451 intel_clock(dev, 66000, &clock);
79e53945 6452 } else
2177832f 6453 intel_clock(dev, 48000, &clock);
79e53945
JB		 6454 } else {
6455 if (dpll & PLL_P1_DIVIDE_BY_TWO)
6456 clock.p1 = 2;
6457 else {
6458 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
6459 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
6460 }
6461 if (dpll & PLL_P2_DIVIDE_BY_4)
6462 clock.p2 = 4;
6463 else
6464 clock.p2 = 2;
6465
2177832f 6466 intel_clock(dev, 48000, &clock);
79e53945
JB		 6467 }
6468 }
6469
6470 /* XXX: It would be nice to validate the clocks, but we can't reuse
6471 * i830PllIsValid() because it relies on the xf86_config connector
6472 * configuration being accurate, which it isn't necessarily.
6473 */
6474
6475 return clock.dot;
6476}
6477
6478/** Returns the currently programmed mode of the given pipe. */
6479struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
6480 struct drm_crtc *crtc)
6481{
548f245b 6482 struct drm_i915_private *dev_priv = dev->dev_private;
79e53945
JB		 6483 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6484 int pipe = intel_crtc->pipe;
6485 struct drm_display_mode *mode;
548f245b
JB		 6486 int htot = I915_READ(HTOTAL(pipe));
6487 int hsync = I915_READ(HSYNC(pipe));
6488 int vtot = I915_READ(VTOTAL(pipe));
6489 int vsync = I915_READ(VSYNC(pipe));
79e53945
JB		 6490
6491 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
6492 if (!mode)
6493 return NULL;
6494
6495 mode->clock = intel_crtc_clock_get(dev, crtc);
6496 mode->hdisplay = (htot & 0xffff) + 1;
6497 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
6498 mode->hsync_start = (hsync & 0xffff) + 1;
6499 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
6500 mode->vdisplay = (vtot & 0xffff) + 1;
6501 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
6502 mode->vsync_start = (vsync & 0xffff) + 1;
6503 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
6504
6505 drm_mode_set_name(mode);
79e53945
JB		 6506
6507 return mode;
6508}
6509
3dec0095 6510static void intel_increase_pllclock(struct drm_crtc *crtc)
652c393a
JB		 6511{
6512 struct drm_device *dev = crtc->dev;
6513 drm_i915_private_t *dev_priv = dev->dev_private;
6514 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6515 int pipe = intel_crtc->pipe;
dbdc6479
JB		 6516 int dpll_reg = DPLL(pipe);
6517 int dpll;
652c393a 6518
bad720ff 6519 if (HAS_PCH_SPLIT(dev))
652c393a
JB		 6520 return;
6521
6522 if (!dev_priv->lvds_downclock_avail)
6523 return;
6524
dbdc6479 6525 dpll = I915_READ(dpll_reg);
652c393a 6526 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
44d98a61 6527 DRM_DEBUG_DRIVER("upclocking LVDS\n");
652c393a 6528
8ac5a6d5 6529 assert_panel_unlocked(dev_priv, pipe);
652c393a
JB		 6530
6531 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
6532 I915_WRITE(dpll_reg, dpll);
9d0498a2 6533 intel_wait_for_vblank(dev, pipe);
dbdc6479 6534
652c393a
JB		 6535 dpll = I915_READ(dpll_reg);
6536 if (dpll & DISPLAY_RATE_SELECT_FPA1)
44d98a61 6537 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
652c393a 6538 }
652c393a
JB		 6539}
6540
6541static void intel_decrease_pllclock(struct drm_crtc *crtc)
6542{
6543 struct drm_device *dev = crtc->dev;
6544 drm_i915_private_t *dev_priv = dev->dev_private;
6545 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
652c393a 6546
bad720ff 6547 if (HAS_PCH_SPLIT(dev))
652c393a
JB		 6548 return;
6549
6550 if (!dev_priv->lvds_downclock_avail)
6551 return;
6552
6553 /*
6554 * Since this is called by a timer, we should never get here in
6555 * the manual case.
6556 */
6557 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
dc257cf1
DV		 6558 int pipe = intel_crtc->pipe;
6559 int dpll_reg = DPLL(pipe);
6560 int dpll;
f6e5b160 6561
44d98a61 6562 DRM_DEBUG_DRIVER("downclocking LVDS\n");
652c393a 6563
8ac5a6d5 6564 assert_panel_unlocked(dev_priv, pipe);
652c393a 6565
dc257cf1 6566 dpll = I915_READ(dpll_reg);
652c393a
JB		 6567 dpll |= DISPLAY_RATE_SELECT_FPA1;
6568 I915_WRITE(dpll_reg, dpll);
9d0498a2 6569 intel_wait_for_vblank(dev, pipe);
652c393a
JB		 6570 dpll = I915_READ(dpll_reg);
6571 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
44d98a61 6572 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
652c393a
JB		 6573 }
6574
6575}
6576
f047e395
CW		 6577void intel_mark_busy(struct drm_device *dev)
6578{
f047e395
CW		 6579 i915_update_gfx_val(dev->dev_private);
6580}
6581
6582void intel_mark_idle(struct drm_device *dev)
652c393a 6583{
f047e395
CW		 6584}
6585
6586void intel_mark_fb_busy(struct drm_i915_gem_object *obj)
6587{
6588 struct drm_device *dev = obj->base.dev;
652c393a 6589 struct drm_crtc *crtc;
652c393a
JB		 6590
6591 if (!i915_powersave)
6592 return;
6593
652c393a 6594 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
652c393a
JB		 6595 if (!crtc->fb)
6596 continue;
6597
f047e395
CW		 6598 if (to_intel_framebuffer(crtc->fb)->obj == obj)
6599 intel_increase_pllclock(crtc);
652c393a 6600 }
652c393a
JB		 6601}
6602
f047e395 6603void intel_mark_fb_idle(struct drm_i915_gem_object *obj)
652c393a 6604{
f047e395
CW		 6605 struct drm_device *dev = obj->base.dev;
6606 struct drm_crtc *crtc;
652c393a 6607
f047e395 6608 if (!i915_powersave)
acb87dfb
CW		 6609 return;
6610
652c393a
JB		 6611 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6612 if (!crtc->fb)
6613 continue;
6614
f047e395
CW		 6615 if (to_intel_framebuffer(crtc->fb)->obj == obj)
6616 intel_decrease_pllclock(crtc);
652c393a
JB		 6617 }
6618}
6619
79e53945
JB		 6620static void intel_crtc_destroy(struct drm_crtc *crtc)
6621{
6622 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
67e77c5a
DV		 6623 struct drm_device *dev = crtc->dev;
6624 struct intel_unpin_work *work;
6625 unsigned long flags;
6626
6627 spin_lock_irqsave(&dev->event_lock, flags);
6628 work = intel_crtc->unpin_work;
6629 intel_crtc->unpin_work = NULL;
6630 spin_unlock_irqrestore(&dev->event_lock, flags);
6631
6632 if (work) {
6633 cancel_work_sync(&work->work);
6634 kfree(work);
6635 }
79e53945
JB		 6636
6637 drm_crtc_cleanup(crtc);
67e77c5a 6638
79e53945
JB		 6639 kfree(intel_crtc);
6640}
6641
6b95a207
KH		 6642static void intel_unpin_work_fn(struct work_struct *__work)
6643{
6644 struct intel_unpin_work *work =
6645 container_of(__work, struct intel_unpin_work, work);
6646
6647 mutex_lock(&work->dev->struct_mutex);
1690e1eb 6648 intel_unpin_fb_obj(work->old_fb_obj);
05394f39
CW		 6649 drm_gem_object_unreference(&work->pending_flip_obj->base);
6650 drm_gem_object_unreference(&work->old_fb_obj->base);
d9e86c0e 6651
7782de3b 6652 intel_update_fbc(work->dev);
6b95a207
KH		 6653 mutex_unlock(&work->dev->struct_mutex);
6654 kfree(work);
6655}
6656
1afe3e9d 6657static void do_intel_finish_page_flip(struct drm_device *dev,
49b14a5c 6658 struct drm_crtc *crtc)
6b95a207
KH		 6659{
6660 drm_i915_private_t *dev_priv = dev->dev_private;
6b95a207
KH		 6661 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6662 struct intel_unpin_work *work;
05394f39 6663 struct drm_i915_gem_object *obj;
6b95a207 6664 struct drm_pending_vblank_event *e;
95cb1b02 6665 struct timeval tvbl;
6b95a207
KH		 6666 unsigned long flags;
6667
6668 /* Ignore early vblank irqs */
6669 if (intel_crtc == NULL)
6670 return;
6671
6672 spin_lock_irqsave(&dev->event_lock, flags);
6673 work = intel_crtc->unpin_work;
6674 if (work == NULL || !work->pending) {
6675 spin_unlock_irqrestore(&dev->event_lock, flags);
6676 return;
6677 }
6678
6679 intel_crtc->unpin_work = NULL;
6b95a207
KH		 6680
6681 if (work->event) {
6682 e = work->event;
49b14a5c 6683 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
0af7e4df 6684
49b14a5c
MK		 6685 e->event.tv_sec = tvbl.tv_sec;
6686 e->event.tv_usec = tvbl.tv_usec;
0af7e4df 6687
6b95a207
KH		 6688 list_add_tail(&e->base.link,
6689 &e->base.file_priv->event_list);
6690 wake_up_interruptible(&e->base.file_priv->event_wait);
6691 }
6692
0af7e4df
MK		 6693 drm_vblank_put(dev, intel_crtc->pipe);
6694
6b95a207
KH		 6695 spin_unlock_irqrestore(&dev->event_lock, flags);
6696
05394f39 6697 obj = work->old_fb_obj;
d9e86c0e 6698
e59f2bac 6699 atomic_clear_mask(1 << intel_crtc->plane,
05394f39 6700 &obj->pending_flip.counter);
d9e86c0e 6701
5bb61643 6702 wake_up(&dev_priv->pending_flip_queue);
6b95a207 6703 schedule_work(&work->work);
e5510fac
JB		 6704
6705 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
6b95a207
KH		 6706}
6707
1afe3e9d
JB		 6708void intel_finish_page_flip(struct drm_device *dev, int pipe)
6709{
6710 drm_i915_private_t *dev_priv = dev->dev_private;
6711 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
6712
49b14a5c 6713 do_intel_finish_page_flip(dev, crtc);
1afe3e9d
JB		 6714}
6715
6716void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
6717{
6718 drm_i915_private_t *dev_priv = dev->dev_private;
6719 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
6720
49b14a5c 6721 do_intel_finish_page_flip(dev, crtc);
1afe3e9d
JB		 6722}
6723
6b95a207
KH		 6724void intel_prepare_page_flip(struct drm_device *dev, int plane)
6725{
6726 drm_i915_private_t *dev_priv = dev->dev_private;
6727 struct intel_crtc *intel_crtc =
6728 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
6729 unsigned long flags;
6730
6731 spin_lock_irqsave(&dev->event_lock, flags);
de3f440f 6732 if (intel_crtc->unpin_work) {
4e5359cd
SF		 6733 if ((++intel_crtc->unpin_work->pending) > 1)
6734 DRM_ERROR("Prepared flip multiple times\n");
de3f440f
JB		 6735 } else {
6736 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
6737 }
6b95a207
KH		 6738 spin_unlock_irqrestore(&dev->event_lock, flags);
6739}
6740
8c9f3aaf
JB		 6741static int intel_gen2_queue_flip(struct drm_device *dev,
6742 struct drm_crtc *crtc,
6743 struct drm_framebuffer *fb,
6744 struct drm_i915_gem_object *obj)
6745{
6746 struct drm_i915_private *dev_priv = dev->dev_private;
6747 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8c9f3aaf 6748 u32 flip_mask;
6d90c952 6749 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
8c9f3aaf
JB		 6750 int ret;
6751
6d90c952 6752 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
8c9f3aaf 6753 if (ret)
83d4092b 6754 goto err;
8c9f3aaf 6755
6d90c952 6756 ret = intel_ring_begin(ring, 6);
8c9f3aaf 6757 if (ret)
83d4092b 6758 goto err_unpin;
8c9f3aaf
JB		 6759
6760 /* Can't queue multiple flips, so wait for the previous
6761 * one to finish before executing the next.
6762 */
6763 if (intel_crtc->plane)
6764 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
6765 else
6766 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6d90c952
DV		 6767 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
6768 intel_ring_emit(ring, MI_NOOP);
6769 intel_ring_emit(ring, MI_DISPLAY_FLIP |
6770 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6771 intel_ring_emit(ring, fb->pitches[0]);
e506a0c6 6772 intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset);
6d90c952
DV		 6773 intel_ring_emit(ring, 0); /* aux display base address, unused */
6774 intel_ring_advance(ring);
83d4092b
CW		 6775 return 0;
6776
6777err_unpin:
6778 intel_unpin_fb_obj(obj);
6779err:
8c9f3aaf
JB		 6780 return ret;
6781}
6782
6783static int intel_gen3_queue_flip(struct drm_device *dev,
6784 struct drm_crtc *crtc,
6785 struct drm_framebuffer *fb,
6786 struct drm_i915_gem_object *obj)
6787{
6788 struct drm_i915_private *dev_priv = dev->dev_private;
6789 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8c9f3aaf 6790 u32 flip_mask;
6d90c952 6791 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
8c9f3aaf
JB		 6792 int ret;
6793
6d90c952 6794 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
8c9f3aaf 6795 if (ret)
83d4092b 6796 goto err;
8c9f3aaf 6797
6d90c952 6798 ret = intel_ring_begin(ring, 6);
8c9f3aaf 6799 if (ret)
83d4092b 6800 goto err_unpin;
8c9f3aaf
JB		 6801
6802 if (intel_crtc->plane)
6803 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
6804 else
6805 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6d90c952
DV		 6806 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
6807 intel_ring_emit(ring, MI_NOOP);
6808 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
6809 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6810 intel_ring_emit(ring, fb->pitches[0]);
e506a0c6 6811 intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset);
6d90c952
DV		 6812 intel_ring_emit(ring, MI_NOOP);
6813
6814 intel_ring_advance(ring);
83d4092b
CW		 6815 return 0;
6816
6817err_unpin:
6818 intel_unpin_fb_obj(obj);
6819err:
8c9f3aaf
JB		 6820 return ret;
6821}
6822
6823static int intel_gen4_queue_flip(struct drm_device *dev,
6824 struct drm_crtc *crtc,
6825 struct drm_framebuffer *fb,
6826 struct drm_i915_gem_object *obj)
6827{
6828 struct drm_i915_private *dev_priv = dev->dev_private;
6829 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6830 uint32_t pf, pipesrc;
6d90c952 6831 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
8c9f3aaf
JB		 6832 int ret;
6833
6d90c952 6834 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
8c9f3aaf 6835 if (ret)
83d4092b 6836 goto err;
8c9f3aaf 6837
6d90c952 6838 ret = intel_ring_begin(ring, 4);
8c9f3aaf 6839 if (ret)
83d4092b 6840 goto err_unpin;
8c9f3aaf
JB		 6841
6842 /* i965+ uses the linear or tiled offsets from the
6843 * Display Registers (which do not change across a page-flip)
6844 * so we need only reprogram the base address.
6845 */
6d90c952
DV		 6846 intel_ring_emit(ring, MI_DISPLAY_FLIP |
6847 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6848 intel_ring_emit(ring, fb->pitches[0]);
c2c75131
DV		 6849 intel_ring_emit(ring,
6850 (obj->gtt_offset + intel_crtc->dspaddr_offset) |
6851 obj->tiling_mode);
8c9f3aaf
JB		 6852
6853 /* XXX Enabling the panel-fitter across page-flip is so far
6854 * untested on non-native modes, so ignore it for now.
6855 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
6856 */
6857 pf = 0;
6858 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6d90c952
DV		 6859 intel_ring_emit(ring, pf | pipesrc);
6860 intel_ring_advance(ring);
83d4092b
CW		 6861 return 0;
6862
6863err_unpin:
6864 intel_unpin_fb_obj(obj);
6865err:
8c9f3aaf
JB		 6866 return ret;
6867}
6868
6869static int intel_gen6_queue_flip(struct drm_device *dev,
6870 struct drm_crtc *crtc,
6871 struct drm_framebuffer *fb,
6872 struct drm_i915_gem_object *obj)
6873{
6874 struct drm_i915_private *dev_priv = dev->dev_private;
6875 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6d90c952 6876 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
8c9f3aaf
JB		 6877 uint32_t pf, pipesrc;
6878 int ret;
6879
6d90c952 6880 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
8c9f3aaf 6881 if (ret)
83d4092b 6882 goto err;
8c9f3aaf 6883
6d90c952 6884 ret = intel_ring_begin(ring, 4);
8c9f3aaf 6885 if (ret)
83d4092b 6886 goto err_unpin;
8c9f3aaf 6887
6d90c952
DV		 6888 intel_ring_emit(ring, MI_DISPLAY_FLIP |
6889 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6890 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
c2c75131 6891 intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset);
8c9f3aaf 6892
dc257cf1
DV		 6893 /* Contrary to the suggestions in the documentation,
6894 * "Enable Panel Fitter" does not seem to be required when page
6895 * flipping with a non-native mode, and worse causes a normal
6896 * modeset to fail.
6897 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
6898 */
6899 pf = 0;
8c9f3aaf 6900 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6d90c952
DV		 6901 intel_ring_emit(ring, pf | pipesrc);
6902 intel_ring_advance(ring);
83d4092b
CW		 6903 return 0;
6904
6905err_unpin:
6906 intel_unpin_fb_obj(obj);
6907err:
8c9f3aaf
JB		 6908 return ret;
6909}
6910
7c9017e5
JB		 6911/*
6912 * On gen7 we currently use the blit ring because (in early silicon at least)
6913 * the render ring doesn't give us interrpts for page flip completion, which
6914 * means clients will hang after the first flip is queued. Fortunately the
6915 * blit ring generates interrupts properly, so use it instead.
6916 */
6917static int intel_gen7_queue_flip(struct drm_device *dev,
6918 struct drm_crtc *crtc,
6919 struct drm_framebuffer *fb,
6920 struct drm_i915_gem_object *obj)
6921{
6922 struct drm_i915_private *dev_priv = dev->dev_private;
6923 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6924 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
cb05d8de 6925 uint32_t plane_bit = 0;
7c9017e5
JB		 6926 int ret;
6927
6928 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6929 if (ret)
83d4092b 6930 goto err;
7c9017e5 6931
cb05d8de
DV		 6932 switch(intel_crtc->plane) {
6933 case PLANE_A:
6934 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
6935 break;
6936 case PLANE_B:
6937 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
6938 break;
6939 case PLANE_C:
6940 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
6941 break;
6942 default:
6943 WARN_ONCE(1, "unknown plane in flip command\n");
6944 ret = -ENODEV;
ab3951eb 6945 goto err_unpin;
cb05d8de
DV		 6946 }
6947
7c9017e5
JB		 6948 ret = intel_ring_begin(ring, 4);
6949 if (ret)
83d4092b 6950 goto err_unpin;
7c9017e5 6951
cb05d8de 6952 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
01f2c773 6953 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
c2c75131 6954 intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset);
7c9017e5
JB		 6955 intel_ring_emit(ring, (MI_NOOP));
6956 intel_ring_advance(ring);
83d4092b
CW		 6957 return 0;
6958
6959err_unpin:
6960 intel_unpin_fb_obj(obj);
6961err:
7c9017e5
JB		 6962 return ret;
6963}
6964
8c9f3aaf
JB		 6965static int intel_default_queue_flip(struct drm_device *dev,
6966 struct drm_crtc *crtc,
6967 struct drm_framebuffer *fb,
6968 struct drm_i915_gem_object *obj)
6969{
6970 return -ENODEV;
6971}
6972
6b95a207
KH		 6973static int intel_crtc_page_flip(struct drm_crtc *crtc,
6974 struct drm_framebuffer *fb,
6975 struct drm_pending_vblank_event *event)
6976{
6977 struct drm_device *dev = crtc->dev;
6978 struct drm_i915_private *dev_priv = dev->dev_private;
6979 struct intel_framebuffer *intel_fb;
05394f39 6980 struct drm_i915_gem_object *obj;
6b95a207
KH		 6981 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6982 struct intel_unpin_work *work;
8c9f3aaf 6983 unsigned long flags;
52e68630 6984 int ret;
6b95a207 6985
e6a595d2
VS		 6986 /* Can't change pixel format via MI display flips. */
6987 if (fb->pixel_format != crtc->fb->pixel_format)
6988 return -EINVAL;
6989
6990 /*
6991 * TILEOFF/LINOFF registers can't be changed via MI display flips.
6992 * Note that pitch changes could also affect these register.
6993 */
6994 if (INTEL_INFO(dev)->gen > 3 &&
6995 (fb->offsets[0] != crtc->fb->offsets[0] ||
6996 fb->pitches[0] != crtc->fb->pitches[0]))
6997 return -EINVAL;
6998
6b95a207
KH		 6999 work = kzalloc(sizeof *work, GFP_KERNEL);
7000 if (work == NULL)
7001 return -ENOMEM;
7002
6b95a207
KH		 7003 work->event = event;
7004 work->dev = crtc->dev;
7005 intel_fb = to_intel_framebuffer(crtc->fb);
b1b87f6b 7006 work->old_fb_obj = intel_fb->obj;
6b95a207
KH		 7007 INIT_WORK(&work->work, intel_unpin_work_fn);
7008
7317c75e
JB		 7009 ret = drm_vblank_get(dev, intel_crtc->pipe);
7010 if (ret)
7011 goto free_work;
7012
6b95a207
KH		 7013 /* We borrow the event spin lock for protecting unpin_work */
7014 spin_lock_irqsave(&dev->event_lock, flags);
7015 if (intel_crtc->unpin_work) {
7016 spin_unlock_irqrestore(&dev->event_lock, flags);
7017 kfree(work);
7317c75e 7018 drm_vblank_put(dev, intel_crtc->pipe);
468f0b44
CW		 7019
7020 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
6b95a207
KH		 7021 return -EBUSY;
7022 }
7023 intel_crtc->unpin_work = work;
7024 spin_unlock_irqrestore(&dev->event_lock, flags);
7025
7026 intel_fb = to_intel_framebuffer(fb);
7027 obj = intel_fb->obj;
7028
79158103
CW		 7029 ret = i915_mutex_lock_interruptible(dev);
7030 if (ret)
7031 goto cleanup;
6b95a207 7032
75dfca80 7033 /* Reference the objects for the scheduled work. */
05394f39
CW		 7034 drm_gem_object_reference(&work->old_fb_obj->base);
7035 drm_gem_object_reference(&obj->base);
6b95a207
KH		 7036
7037 crtc->fb = fb;
96b099fd 7038
e1f99ce6 7039 work->pending_flip_obj = obj;
e1f99ce6 7040
4e5359cd
SF		 7041 work->enable_stall_check = true;
7042
e1f99ce6
CW		 7043 /* Block clients from rendering to the new back buffer until
7044 * the flip occurs and the object is no longer visible.
7045 */
05394f39 7046 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
e1f99ce6 7047
8c9f3aaf
JB		 7048 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
7049 if (ret)
7050 goto cleanup_pending;
6b95a207 7051
7782de3b 7052 intel_disable_fbc(dev);
f047e395 7053 intel_mark_fb_busy(obj);
6b95a207
KH		 7054 mutex_unlock(&dev->struct_mutex);
7055
e5510fac
JB		 7056 trace_i915_flip_request(intel_crtc->plane, obj);
7057
6b95a207 7058 return 0;
96b099fd 7059
8c9f3aaf
JB		 7060cleanup_pending:
7061 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
05394f39
CW		 7062 drm_gem_object_unreference(&work->old_fb_obj->base);
7063 drm_gem_object_unreference(&obj->base);
96b099fd
CW		 7064 mutex_unlock(&dev->struct_mutex);
7065
79158103 7066cleanup:
96b099fd
CW		 7067 spin_lock_irqsave(&dev->event_lock, flags);
7068 intel_crtc->unpin_work = NULL;
7069 spin_unlock_irqrestore(&dev->event_lock, flags);
7070
7317c75e
JB		 7071 drm_vblank_put(dev, intel_crtc->pipe);
7072free_work:
96b099fd
CW		 7073 kfree(work);
7074
7075 return ret;
6b95a207
KH		 7076}
7077
f6e5b160 7078static struct drm_crtc_helper_funcs intel_helper_funcs = {
f6e5b160
CW		 7079 .mode_set_base_atomic = intel_pipe_set_base_atomic,
7080 .load_lut = intel_crtc_load_lut,
976f8a20 7081 .disable = intel_crtc_noop,
f6e5b160
CW		 7082};
7083
6ed0f796 7084bool intel_encoder_check_is_cloned(struct intel_encoder *encoder)
47f1c6c9 7085{
6ed0f796
DV		 7086 struct intel_encoder *other_encoder;
7087 struct drm_crtc *crtc = &encoder->new_crtc->base;
47f1c6c9 7088
6ed0f796
DV		 7089 if (WARN_ON(!crtc))
7090 return false;
7091
7092 list_for_each_entry(other_encoder,
7093 &crtc->dev->mode_config.encoder_list,
7094 base.head) {
7095
7096 if (&other_encoder->new_crtc->base != crtc ||
7097 encoder == other_encoder)
7098 continue;
7099 else
7100 return true;
f47166d2
CW		 7101 }
7102
6ed0f796
DV		 7103 return false;
7104}
47f1c6c9 7105
50f56119
DV		 7106static bool intel_encoder_crtc_ok(struct drm_encoder *encoder,
7107 struct drm_crtc *crtc)
7108{
7109 struct drm_device *dev;
7110 struct drm_crtc *tmp;
7111 int crtc_mask = 1;
47f1c6c9 7112
50f56119 7113 WARN(!crtc, "checking null crtc?\n");
47f1c6c9 7114
50f56119 7115 dev = crtc->dev;
47f1c6c9 7116
50f56119
DV		 7117 list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
7118 if (tmp == crtc)
7119 break;
7120 crtc_mask <<= 1;
7121 }
47f1c6c9 7122
50f56119
DV		 7123 if (encoder->possible_crtcs & crtc_mask)
7124 return true;
7125 return false;
47f1c6c9 7126}
79e53945 7127
9a935856
DV		 7128/**
7129 * intel_modeset_update_staged_output_state
7130 *
7131 * Updates the staged output configuration state, e.g. after we've read out the
7132 * current hw state.
7133 */
7134static void intel_modeset_update_staged_output_state(struct drm_device *dev)
f6e5b160 7135{
9a935856
DV		 7136 struct intel_encoder *encoder;
7137 struct intel_connector *connector;
f6e5b160 7138
9a935856
DV		 7139 list_for_each_entry(connector, &dev->mode_config.connector_list,
7140 base.head) {
7141 connector->new_encoder =
7142 to_intel_encoder(connector->base.encoder);
7143 }
f6e5b160 7144
9a935856
DV		 7145 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7146 base.head) {
7147 encoder->new_crtc =
7148 to_intel_crtc(encoder->base.crtc);
7149 }
f6e5b160
CW		 7150}
7151
9a935856
DV		 7152/**
7153 * intel_modeset_commit_output_state
7154 *
7155 * This function copies the stage display pipe configuration to the real one.
7156 */
7157static void intel_modeset_commit_output_state(struct drm_device *dev)
7158{
7159 struct intel_encoder *encoder;
7160 struct intel_connector *connector;
f6e5b160 7161
9a935856
DV		 7162 list_for_each_entry(connector, &dev->mode_config.connector_list,
7163 base.head) {
7164 connector->base.encoder = &connector->new_encoder->base;
7165 }
f6e5b160 7166
9a935856
DV		 7167 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7168 base.head) {
7169 encoder->base.crtc = &encoder->new_crtc->base;
7170 }
7171}
7172
7758a113
DV		 7173static struct drm_display_mode *
7174intel_modeset_adjusted_mode(struct drm_crtc *crtc,
7175 struct drm_display_mode *mode)
ee7b9f93 7176{
7758a113
DV		 7177 struct drm_device *dev = crtc->dev;
7178 struct drm_display_mode *adjusted_mode;
7179 struct drm_encoder_helper_funcs *encoder_funcs;
7180 struct intel_encoder *encoder;
ee7b9f93 7181
7758a113
DV		 7182 adjusted_mode = drm_mode_duplicate(dev, mode);
7183 if (!adjusted_mode)
7184 return ERR_PTR(-ENOMEM);
7185
7186 /* Pass our mode to the connectors and the CRTC to give them a chance to
7187 * adjust it according to limitations or connector properties, and also
7188 * a chance to reject the mode entirely.
7189 */
7190 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7191 base.head) {
7192
7193 if (&encoder->new_crtc->base != crtc)
7194 continue;
7195 encoder_funcs = encoder->base.helper_private;
7196 if (!(encoder_funcs->mode_fixup(&encoder->base, mode,
7197 adjusted_mode))) {
7198 DRM_DEBUG_KMS("Encoder fixup failed\n");
7199 goto fail;
7200 }
ee7b9f93
JB		 7201 }
7202
7758a113
DV		 7203 if (!(intel_crtc_mode_fixup(crtc, mode, adjusted_mode))) {
7204 DRM_DEBUG_KMS("CRTC fixup failed\n");
7205 goto fail;
ee7b9f93 7206 }
7758a113
DV		 7207 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
7208
7209 return adjusted_mode;
7210fail:
7211 drm_mode_destroy(dev, adjusted_mode);
7212 return ERR_PTR(-EINVAL);
ee7b9f93
JB		 7213}
7214
e2e1ed41
DV		 7215/* Computes which crtcs are affected and sets the relevant bits in the mask. For
7216 * simplicity we use the crtc's pipe number (because it's easier to obtain). */
7217static void
7218intel_modeset_affected_pipes(struct drm_crtc *crtc, unsigned *modeset_pipes,
7219 unsigned *prepare_pipes, unsigned *disable_pipes)
79e53945
JB		 7220{
7221 struct intel_crtc *intel_crtc;
e2e1ed41
DV		 7222 struct drm_device *dev = crtc->dev;
7223 struct intel_encoder *encoder;
7224 struct intel_connector *connector;
7225 struct drm_crtc *tmp_crtc;
79e53945 7226
e2e1ed41 7227 *disable_pipes = *modeset_pipes = *prepare_pipes = 0;
79e53945 7228
e2e1ed41
DV		 7229 /* Check which crtcs have changed outputs connected to them, these need
7230 * to be part of the prepare_pipes mask. We don't (yet) support global
7231 * modeset across multiple crtcs, so modeset_pipes will only have one
7232 * bit set at most. */
7233 list_for_each_entry(connector, &dev->mode_config.connector_list,
7234 base.head) {
7235 if (connector->base.encoder == &connector->new_encoder->base)
7236 continue;
79e53945 7237
e2e1ed41
DV		 7238 if (connector->base.encoder) {
7239 tmp_crtc = connector->base.encoder->crtc;
7240
7241 *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
7242 }
7243
7244 if (connector->new_encoder)
7245 *prepare_pipes |=
7246 1 << connector->new_encoder->new_crtc->pipe;
79e53945
JB		 7247 }
7248
e2e1ed41
DV		 7249 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7250 base.head) {
7251 if (encoder->base.crtc == &encoder->new_crtc->base)
7252 continue;
7253
7254 if (encoder->base.crtc) {
7255 tmp_crtc = encoder->base.crtc;
7256
7257 *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
7258 }
7259
7260 if (encoder->new_crtc)
7261 *prepare_pipes |= 1 << encoder->new_crtc->pipe;
80824003
JB		 7262 }
7263
e2e1ed41
DV		 7264 /* Check for any pipes that will be fully disabled ... */
7265 list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list,
7266 base.head) {
7267 bool used = false;
22fd0fab 7268
e2e1ed41
DV		 7269 /* Don't try to disable disabled crtcs. */
7270 if (!intel_crtc->base.enabled)
7271 continue;
7e7d76c3 7272
e2e1ed41
DV		 7273 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7274 base.head) {
7275 if (encoder->new_crtc == intel_crtc)
7276 used = true;
7277 }
7278
7279 if (!used)
7280 *disable_pipes |= 1 << intel_crtc->pipe;
7e7d76c3
JB		 7281 }
7282
e2e1ed41
DV		 7283
7284 /* set_mode is also used to update properties on life display pipes. */
7285 intel_crtc = to_intel_crtc(crtc);
7286 if (crtc->enabled)
7287 *prepare_pipes |= 1 << intel_crtc->pipe;
7288
7289 /* We only support modeset on one single crtc, hence we need to do that
7290 * only for the passed in crtc iff we change anything else than just
7291 * disable crtcs.
7292 *
7293 * This is actually not true, to be fully compatible with the old crtc
7294 * helper we automatically disable _any_ output (i.e. doesn't need to be
7295 * connected to the crtc we're modesetting on) if it's disconnected.
7296 * Which is a rather nutty api (since changed the output configuration
7297 * without userspace's explicit request can lead to confusion), but
7298 * alas. Hence we currently need to modeset on all pipes we prepare. */
7299 if (*prepare_pipes)
7300 *modeset_pipes = *prepare_pipes;
7301
7302 /* ... and mask these out. */
7303 *modeset_pipes &= ~(*disable_pipes);
7304 *prepare_pipes &= ~(*disable_pipes);
7305}
7306
ea9d758d
DV		 7307static bool intel_crtc_in_use(struct drm_crtc *crtc)
7308{
7309 struct drm_encoder *encoder;
7310 struct drm_device *dev = crtc->dev;
7311
7312 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
7313 if (encoder->crtc == crtc)
7314 return true;
7315
7316 return false;
7317}
7318
7319static void
7320intel_modeset_update_state(struct drm_device *dev, unsigned prepare_pipes)
7321{
7322 struct intel_encoder *intel_encoder;
7323 struct intel_crtc *intel_crtc;
7324 struct drm_connector *connector;
7325
7326 list_for_each_entry(intel_encoder, &dev->mode_config.encoder_list,
7327 base.head) {
7328 if (!intel_encoder->base.crtc)
7329 continue;
7330
7331 intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
7332
7333 if (prepare_pipes & (1 << intel_crtc->pipe))
7334 intel_encoder->connectors_active = false;
7335 }
7336
7337 intel_modeset_commit_output_state(dev);
7338
7339 /* Update computed state. */
7340 list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list,
7341 base.head) {
7342 intel_crtc->base.enabled = intel_crtc_in_use(&intel_crtc->base);
7343 }
7344
7345 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
7346 if (!connector->encoder || !connector->encoder->crtc)
7347 continue;
7348
7349 intel_crtc = to_intel_crtc(connector->encoder->crtc);
7350
7351 if (prepare_pipes & (1 << intel_crtc->pipe)) {
68d34720
DV		 7352 struct drm_property *dpms_property =
7353 dev->mode_config.dpms_property;
7354
ea9d758d 7355 connector->dpms = DRM_MODE_DPMS_ON;
68d34720
DV		 7356 drm_connector_property_set_value(connector,
7357 dpms_property,
7358 DRM_MODE_DPMS_ON);
ea9d758d
DV		 7359
7360 intel_encoder = to_intel_encoder(connector->encoder);
7361 intel_encoder->connectors_active = true;
7362 }
7363 }
7364
7365}
7366
25c5b266
DV		 7367#define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
7368 list_for_each_entry((intel_crtc), \
7369 &(dev)->mode_config.crtc_list, \
7370 base.head) \
7371 if (mask & (1 <<(intel_crtc)->pipe)) \
7372
b980514c 7373void
8af6cf88
DV		 7374intel_modeset_check_state(struct drm_device *dev)
7375{
7376 struct intel_crtc *crtc;
7377 struct intel_encoder *encoder;
7378 struct intel_connector *connector;
7379
7380 list_for_each_entry(connector, &dev->mode_config.connector_list,
7381 base.head) {
7382 /* This also checks the encoder/connector hw state with the
7383 * ->get_hw_state callbacks. */
7384 intel_connector_check_state(connector);
7385
7386 WARN(&connector->new_encoder->base != connector->base.encoder,
7387 "connector's staged encoder doesn't match current encoder\n");
7388 }
7389
7390 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7391 base.head) {
7392 bool enabled = false;
7393 bool active = false;
7394 enum pipe pipe, tracked_pipe;
7395
7396 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
7397 encoder->base.base.id,
7398 drm_get_encoder_name(&encoder->base));
7399
7400 WARN(&encoder->new_crtc->base != encoder->base.crtc,
7401 "encoder's stage crtc doesn't match current crtc\n");
7402 WARN(encoder->connectors_active && !encoder->base.crtc,
7403 "encoder's active_connectors set, but no crtc\n");
7404
7405 list_for_each_entry(connector, &dev->mode_config.connector_list,
7406 base.head) {
7407 if (connector->base.encoder != &encoder->base)
7408 continue;
7409 enabled = true;
7410 if (connector->base.dpms != DRM_MODE_DPMS_OFF)
7411 active = true;
7412 }
7413 WARN(!!encoder->base.crtc != enabled,
7414 "encoder's enabled state mismatch "
7415 "(expected %i, found %i)\n",
7416 !!encoder->base.crtc, enabled);
7417 WARN(active && !encoder->base.crtc,
7418 "active encoder with no crtc\n");
7419
7420 WARN(encoder->connectors_active != active,
7421 "encoder's computed active state doesn't match tracked active state "
7422 "(expected %i, found %i)\n", active, encoder->connectors_active);
7423
7424 active = encoder->get_hw_state(encoder, &pipe);
7425 WARN(active != encoder->connectors_active,
7426 "encoder's hw state doesn't match sw tracking "
7427 "(expected %i, found %i)\n",
7428 encoder->connectors_active, active);
7429
7430 if (!encoder->base.crtc)
7431 continue;
7432
7433 tracked_pipe = to_intel_crtc(encoder->base.crtc)->pipe;
7434 WARN(active && pipe != tracked_pipe,
7435 "active encoder's pipe doesn't match"
7436 "(expected %i, found %i)\n",
7437 tracked_pipe, pipe);
7438
7439 }
7440
7441 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
7442 base.head) {
7443 bool enabled = false;
7444 bool active = false;
7445
7446 DRM_DEBUG_KMS("[CRTC:%d]\n",
7447 crtc->base.base.id);
7448
7449 WARN(crtc->active && !crtc->base.enabled,
7450 "active crtc, but not enabled in sw tracking\n");
7451
7452 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7453 base.head) {
7454 if (encoder->base.crtc != &crtc->base)
7455 continue;
7456 enabled = true;
7457 if (encoder->connectors_active)
7458 active = true;
7459 }
7460 WARN(active != crtc->active,
7461 "crtc's computed active state doesn't match tracked active state "
7462 "(expected %i, found %i)\n", active, crtc->active);
7463 WARN(enabled != crtc->base.enabled,
7464 "crtc's computed enabled state doesn't match tracked enabled state "
7465 "(expected %i, found %i)\n", enabled, crtc->base.enabled);
7466
7467 assert_pipe(dev->dev_private, crtc->pipe, crtc->active);
7468 }
7469}
7470
a6778b3c
DV		 7471bool intel_set_mode(struct drm_crtc *crtc,
7472 struct drm_display_mode *mode,
94352cf9 7473 int x, int y, struct drm_framebuffer *fb)
a6778b3c
DV		 7474{
7475 struct drm_device *dev = crtc->dev;
dbf2b54e 7476 drm_i915_private_t *dev_priv = dev->dev_private;
a6778b3c 7477 struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
a6778b3c 7478 struct drm_encoder_helper_funcs *encoder_funcs;
a6778b3c 7479 struct drm_encoder *encoder;
25c5b266
DV		 7480 struct intel_crtc *intel_crtc;
7481 unsigned disable_pipes, prepare_pipes, modeset_pipes;
a6778b3c
DV		 7482 bool ret = true;
7483
e2e1ed41 7484 intel_modeset_affected_pipes(crtc, &modeset_pipes,
25c5b266
DV		 7485 &prepare_pipes, &disable_pipes);
7486
7487 DRM_DEBUG_KMS("set mode pipe masks: modeset: %x, prepare: %x, disable: %x\n",
7488 modeset_pipes, prepare_pipes, disable_pipes);
e2e1ed41 7489
976f8a20
DV		 7490 for_each_intel_crtc_masked(dev, disable_pipes, intel_crtc)
7491 intel_crtc_disable(&intel_crtc->base);
87f1faa6 7492
a6778b3c
DV		 7493 saved_hwmode = crtc->hwmode;
7494 saved_mode = crtc->mode;
a6778b3c 7495
25c5b266
DV		 7496 /* Hack: Because we don't (yet) support global modeset on multiple
7497 * crtcs, we don't keep track of the new mode for more than one crtc.
7498 * Hence simply check whether any bit is set in modeset_pipes in all the
7499 * pieces of code that are not yet converted to deal with mutliple crtcs
7500 * changing their mode at the same time. */
7501 adjusted_mode = NULL;
7502 if (modeset_pipes) {
7503 adjusted_mode = intel_modeset_adjusted_mode(crtc, mode);
7504 if (IS_ERR(adjusted_mode)) {
7505 return false;
7506 }
25c5b266 7507 }
a6778b3c 7508
ea9d758d
DV		 7509 for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
7510 if (intel_crtc->base.enabled)
7511 dev_priv->display.crtc_disable(&intel_crtc->base);
7512 }
a6778b3c 7513
6c4c86f5
DV		 7514 /* crtc->mode is already used by the ->mode_set callbacks, hence we need
7515 * to set it here already despite that we pass it down the callchain.
7516 */
7517 if (modeset_pipes)
25c5b266 7518 crtc->mode = *mode;
7758a113 7519
ea9d758d
DV		 7520 /* Only after disabling all output pipelines that will be changed can we
7521 * update the the output configuration. */
7522 intel_modeset_update_state(dev, prepare_pipes);
7523
a6778b3c
DV		 7524 /* Set up the DPLL and any encoders state that needs to adjust or depend
7525 * on the DPLL.
7526 */
25c5b266
DV		 7527 for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
7528 ret = !intel_crtc_mode_set(&intel_crtc->base,
7529 mode, adjusted_mode,
7530 x, y, fb);
7531 if (!ret)
7532 goto done;
a6778b3c 7533
25c5b266 7534 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
a6778b3c 7535
25c5b266
DV		 7536 if (encoder->crtc != &intel_crtc->base)
7537 continue;
a6778b3c 7538
25c5b266
DV		 7539 DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
7540 encoder->base.id, drm_get_encoder_name(encoder),
7541 mode->base.id, mode->name);
7542 encoder_funcs = encoder->helper_private;
7543 encoder_funcs->mode_set(encoder, mode, adjusted_mode);
7544 }
a6778b3c
DV		 7545 }
7546
7547 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
25c5b266
DV		 7548 for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc)
7549 dev_priv->display.crtc_enable(&intel_crtc->base);
a6778b3c 7550
25c5b266
DV		 7551 if (modeset_pipes) {
7552 /* Store real post-adjustment hardware mode. */
7553 crtc->hwmode = *adjusted_mode;
a6778b3c 7554
25c5b266
DV		 7555 /* Calculate and store various constants which
7556 * are later needed by vblank and swap-completion
7557 * timestamping. They are derived from true hwmode.
7558 */
7559 drm_calc_timestamping_constants(crtc);
7560 }
a6778b3c
DV		 7561
7562 /* FIXME: add subpixel order */
7563done:
7564 drm_mode_destroy(dev, adjusted_mode);
25c5b266 7565 if (!ret && crtc->enabled) {
a6778b3c
DV		 7566 crtc->hwmode = saved_hwmode;
7567 crtc->mode = saved_mode;
8af6cf88
DV		 7568 } else {
7569 intel_modeset_check_state(dev);
a6778b3c
DV		 7570 }
7571
7572 return ret;
7573}
7574
25c5b266
DV		 7575#undef for_each_intel_crtc_masked
7576
d9e55608
DV		 7577static void intel_set_config_free(struct intel_set_config *config)
7578{
7579 if (!config)
7580 return;
7581
1aa4b628
DV		 7582 kfree(config->save_connector_encoders);
7583 kfree(config->save_encoder_crtcs);
d9e55608
DV		 7584 kfree(config);
7585}
7586
85f9eb71
DV		 7587static int intel_set_config_save_state(struct drm_device *dev,
7588 struct intel_set_config *config)
7589{
85f9eb71
DV		 7590 struct drm_encoder *encoder;
7591 struct drm_connector *connector;
7592 int count;
7593
1aa4b628
DV		 7594 config->save_encoder_crtcs =
7595 kcalloc(dev->mode_config.num_encoder,
7596 sizeof(struct drm_crtc *), GFP_KERNEL);
7597 if (!config->save_encoder_crtcs)
85f9eb71
DV		 7598 return -ENOMEM;
7599
1aa4b628
DV		 7600 config->save_connector_encoders =
7601 kcalloc(dev->mode_config.num_connector,
7602 sizeof(struct drm_encoder *), GFP_KERNEL);
7603 if (!config->save_connector_encoders)
85f9eb71
DV		 7604 return -ENOMEM;
7605
7606 /* Copy data. Note that driver private data is not affected.
7607 * Should anything bad happen only the expected state is
7608 * restored, not the drivers personal bookkeeping.
7609 */
85f9eb71
DV		 7610 count = 0;
7611 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1aa4b628 7612 config->save_encoder_crtcs[count++] = encoder->crtc;
85f9eb71
DV		 7613 }
7614
7615 count = 0;
7616 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1aa4b628 7617 config->save_connector_encoders[count++] = connector->encoder;
85f9eb71
DV		 7618 }
7619
7620 return 0;
7621}
7622
7623static void intel_set_config_restore_state(struct drm_device *dev,
7624 struct intel_set_config *config)
7625{
9a935856
DV		 7626 struct intel_encoder *encoder;
7627 struct intel_connector *connector;
85f9eb71
DV		 7628 int count;
7629
85f9eb71 7630 count = 0;
9a935856
DV		 7631 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
7632 encoder->new_crtc =
7633 to_intel_crtc(config->save_encoder_crtcs[count++]);
85f9eb71
DV		 7634 }
7635
7636 count = 0;
9a935856
DV		 7637 list_for_each_entry(connector, &dev->mode_config.connector_list, base.head) {
7638 connector->new_encoder =
7639 to_intel_encoder(config->save_connector_encoders[count++]);
85f9eb71
DV		 7640 }
7641}
7642
5e2b584e
DV		 7643static void
7644intel_set_config_compute_mode_changes(struct drm_mode_set *set,
7645 struct intel_set_config *config)
7646{
7647
7648 /* We should be able to check here if the fb has the same properties
7649 * and then just flip_or_move it */
7650 if (set->crtc->fb != set->fb) {
7651 /* If we have no fb then treat it as a full mode set */
7652 if (set->crtc->fb == NULL) {
7653 DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
7654 config->mode_changed = true;
7655 } else if (set->fb == NULL) {
7656 config->mode_changed = true;
7657 } else if (set->fb->depth != set->crtc->fb->depth) {
7658 config->mode_changed = true;
7659 } else if (set->fb->bits_per_pixel !=
7660 set->crtc->fb->bits_per_pixel) {
7661 config->mode_changed = true;
7662 } else
7663 config->fb_changed = true;
7664 }
7665
835c5873 7666 if (set->fb && (set->x != set->crtc->x || set->y != set->crtc->y))
5e2b584e
DV		 7667 config->fb_changed = true;
7668
7669 if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
7670 DRM_DEBUG_KMS("modes are different, full mode set\n");
7671 drm_mode_debug_printmodeline(&set->crtc->mode);
7672 drm_mode_debug_printmodeline(set->mode);
7673 config->mode_changed = true;
7674 }
7675}
7676
2e431051 7677static int
9a935856
DV		 7678intel_modeset_stage_output_state(struct drm_device *dev,
7679 struct drm_mode_set *set,
7680 struct intel_set_config *config)
50f56119 7681{
85f9eb71 7682 struct drm_crtc *new_crtc;
9a935856
DV		 7683 struct intel_connector *connector;
7684 struct intel_encoder *encoder;
2e431051 7685 int count, ro;
50f56119 7686
9a935856
DV		 7687 /* The upper layers ensure that we either disabl a crtc or have a list
7688 * of connectors. For paranoia, double-check this. */
7689 WARN_ON(!set->fb && (set->num_connectors != 0));
7690 WARN_ON(set->fb && (set->num_connectors == 0));
7691
50f56119 7692 count = 0;
9a935856
DV		 7693 list_for_each_entry(connector, &dev->mode_config.connector_list,
7694 base.head) {
7695 /* Otherwise traverse passed in connector list and get encoders
7696 * for them. */
50f56119 7697 for (ro = 0; ro < set->num_connectors; ro++) {
9a935856
DV		 7698 if (set->connectors[ro] == &connector->base) {
7699 connector->new_encoder = connector->encoder;
50f56119
DV		 7700 break;
7701 }
7702 }
7703
9a935856
DV		 7704 /* If we disable the crtc, disable all its connectors. Also, if
7705 * the connector is on the changing crtc but not on the new
7706 * connector list, disable it. */
7707 if ((!set->fb || ro == set->num_connectors) &&
7708 connector->base.encoder &&
7709 connector->base.encoder->crtc == set->crtc) {
7710 connector->new_encoder = NULL;
7711
7712 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
7713 connector->base.base.id,
7714 drm_get_connector_name(&connector->base));
7715 }
7716
7717
7718 if (&connector->new_encoder->base != connector->base.encoder) {
50f56119 7719 DRM_DEBUG_KMS("encoder changed, full mode switch\n");
5e2b584e 7720 config->mode_changed = true;
50f56119 7721 }
9a935856
DV		 7722
7723 /* Disable all disconnected encoders. */
7724 if (connector->base.status == connector_status_disconnected)
7725 connector->new_encoder = NULL;
50f56119 7726 }
9a935856 7727 /* connector->new_encoder is now updated for all connectors. */
50f56119 7728
9a935856 7729 /* Update crtc of enabled connectors. */
50f56119 7730 count = 0;
9a935856
DV		 7731 list_for_each_entry(connector, &dev->mode_config.connector_list,
7732 base.head) {
7733 if (!connector->new_encoder)
50f56119
DV		 7734 continue;
7735
9a935856 7736 new_crtc = connector->new_encoder->base.crtc;
50f56119
DV		 7737
7738 for (ro = 0; ro < set->num_connectors; ro++) {
9a935856 7739 if (set->connectors[ro] == &connector->base)
50f56119
DV		 7740 new_crtc = set->crtc;
7741 }
7742
7743 /* Make sure the new CRTC will work with the encoder */
9a935856
DV		 7744 if (!intel_encoder_crtc_ok(&connector->new_encoder->base,
7745 new_crtc)) {
5e2b584e 7746 return -EINVAL;
50f56119 7747 }
9a935856
DV		 7748 connector->encoder->new_crtc = to_intel_crtc(new_crtc);
7749
7750 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
7751 connector->base.base.id,
7752 drm_get_connector_name(&connector->base),
7753 new_crtc->base.id);
7754 }
7755
7756 /* Check for any encoders that needs to be disabled. */
7757 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
7758 base.head) {
7759 list_for_each_entry(connector,
7760 &dev->mode_config.connector_list,
7761 base.head) {
7762 if (connector->new_encoder == encoder) {
7763 WARN_ON(!connector->new_encoder->new_crtc);
7764
7765 goto next_encoder;
7766 }
7767 }
7768 encoder->new_crtc = NULL;
7769next_encoder:
7770 /* Only now check for crtc changes so we don't miss encoders
7771 * that will be disabled. */
7772 if (&encoder->new_crtc->base != encoder->base.crtc) {
50f56119 7773 DRM_DEBUG_KMS("crtc changed, full mode switch\n");
5e2b584e 7774 config->mode_changed = true;
50f56119
DV		 7775 }
7776 }
9a935856 7777 /* Now we've also updated encoder->new_crtc for all encoders. */
50f56119 7778
2e431051
DV		 7779 return 0;
7780}
7781
7782static int intel_crtc_set_config(struct drm_mode_set *set)
7783{
7784 struct drm_device *dev;
2e431051
DV		 7785 struct drm_mode_set save_set;
7786 struct intel_set_config *config;
7787 int ret;
2e431051 7788
8d3e375e
DV		 7789 BUG_ON(!set);
7790 BUG_ON(!set->crtc);
7791 BUG_ON(!set->crtc->helper_private);
2e431051
DV		 7792
7793 if (!set->mode)
7794 set->fb = NULL;
7795
431e50f7
DV		 7796 /* The fb helper likes to play gross jokes with ->mode_set_config.
7797 * Unfortunately the crtc helper doesn't do much at all for this case,
7798 * so we have to cope with this madness until the fb helper is fixed up. */
7799 if (set->fb && set->num_connectors == 0)
7800 return 0;
7801
2e431051
DV		 7802 if (set->fb) {
7803 DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
7804 set->crtc->base.id, set->fb->base.id,
7805 (int)set->num_connectors, set->x, set->y);
7806 } else {
7807 DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
2e431051
DV		 7808 }
7809
7810 dev = set->crtc->dev;
7811
7812 ret = -ENOMEM;
7813 config = kzalloc(sizeof(*config), GFP_KERNEL);
7814 if (!config)
7815 goto out_config;
7816
7817 ret = intel_set_config_save_state(dev, config);
7818 if (ret)
7819 goto out_config;
7820
7821 save_set.crtc = set->crtc;
7822 save_set.mode = &set->crtc->mode;
7823 save_set.x = set->crtc->x;
7824 save_set.y = set->crtc->y;
7825 save_set.fb = set->crtc->fb;
7826
7827 /* Compute whether we need a full modeset, only an fb base update or no
7828 * change at all. In the future we might also check whether only the
7829 * mode changed, e.g. for LVDS where we only change the panel fitter in
7830 * such cases. */
7831 intel_set_config_compute_mode_changes(set, config);
7832
9a935856 7833 ret = intel_modeset_stage_output_state(dev, set, config);
2e431051
DV		 7834 if (ret)
7835 goto fail;
7836
5e2b584e 7837 if (config->mode_changed) {
87f1faa6 7838 if (set->mode) {
50f56119
DV		 7839 DRM_DEBUG_KMS("attempting to set mode from"
7840 " userspace\n");
7841 drm_mode_debug_printmodeline(set->mode);
87f1faa6
DV		 7842 }
7843
7844 if (!intel_set_mode(set->crtc, set->mode,
7845 set->x, set->y, set->fb)) {
7846 DRM_ERROR("failed to set mode on [CRTC:%d]\n",
7847 set->crtc->base.id);
7848 ret = -EINVAL;
7849 goto fail;
7850 }
5e2b584e 7851 } else if (config->fb_changed) {
4f660f49 7852 ret = intel_pipe_set_base(set->crtc,
94352cf9 7853 set->x, set->y, set->fb);
50f56119
DV		 7854 }
7855
d9e55608
DV		 7856 intel_set_config_free(config);
7857
50f56119
DV		 7858 return 0;
7859
7860fail:
85f9eb71 7861 intel_set_config_restore_state(dev, config);
50f56119
DV		 7862
7863 /* Try to restore the config */
5e2b584e 7864 if (config->mode_changed &&
a6778b3c
DV		 7865 !intel_set_mode(save_set.crtc, save_set.mode,
7866 save_set.x, save_set.y, save_set.fb))
50f56119
DV		 7867 DRM_ERROR("failed to restore config after modeset failure\n");
7868
d9e55608
DV		 7869out_config:
7870 intel_set_config_free(config);
50f56119
DV		 7871 return ret;
7872}
7873
f6e5b160 7874static const struct drm_crtc_funcs intel_crtc_funcs = {
f6e5b160
CW		 7875 .cursor_set = intel_crtc_cursor_set,
7876 .cursor_move = intel_crtc_cursor_move,
7877 .gamma_set = intel_crtc_gamma_set,
50f56119 7878 .set_config = intel_crtc_set_config,
f6e5b160
CW		 7879 .destroy = intel_crtc_destroy,
7880 .page_flip = intel_crtc_page_flip,
7881};
7882
79f689aa
PZ		 7883static void intel_cpu_pll_init(struct drm_device *dev)
7884{
7885 if (IS_HASWELL(dev))
7886 intel_ddi_pll_init(dev);
7887}
7888
ee7b9f93
JB		 7889static void intel_pch_pll_init(struct drm_device *dev)
7890{
7891 drm_i915_private_t *dev_priv = dev->dev_private;
7892 int i;
7893
7894 if (dev_priv->num_pch_pll == 0) {
7895 DRM_DEBUG_KMS("No PCH PLLs on this hardware, skipping initialisation\n");
7896 return;
7897 }
7898
7899 for (i = 0; i < dev_priv->num_pch_pll; i++) {
7900 dev_priv->pch_plls[i].pll_reg = _PCH_DPLL(i);
7901 dev_priv->pch_plls[i].fp0_reg = _PCH_FP0(i);
7902 dev_priv->pch_plls[i].fp1_reg = _PCH_FP1(i);
7903 }
7904}
7905
b358d0a6 7906static void intel_crtc_init(struct drm_device *dev, int pipe)
79e53945 7907{
22fd0fab 7908 drm_i915_private_t *dev_priv = dev->dev_private;
79e53945
JB		 7909 struct intel_crtc *intel_crtc;
7910 int i;
7911
7912 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
7913 if (intel_crtc == NULL)
7914 return;
7915
7916 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
7917
7918 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
79e53945
JB		 7919 for (i = 0; i < 256; i++) {
7920 intel_crtc->lut_r[i] = i;
7921 intel_crtc->lut_g[i] = i;
7922 intel_crtc->lut_b[i] = i;
7923 }
7924
80824003
JB		 7925 /* Swap pipes & planes for FBC on pre-965 */
7926 intel_crtc->pipe = pipe;
7927 intel_crtc->plane = pipe;
a5c961d1 7928 intel_crtc->cpu_transcoder = pipe;
e2e767ab 7929 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
28c97730 7930 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
e2e767ab 7931 intel_crtc->plane = !pipe;
80824003
JB		 7932 }
7933
22fd0fab
JB		 7934 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
7935 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
7936 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
7937 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
7938
5a354204 7939 intel_crtc->bpp = 24; /* default for pre-Ironlake */
7e7d76c3 7940
79e53945 7941 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
79e53945
JB		 7942}
7943
08d7b3d1 7944int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
05394f39 7945 struct drm_file *file)
08d7b3d1 7946{
08d7b3d1 7947 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
c05422d5
DV		 7948 struct drm_mode_object *drmmode_obj;
7949 struct intel_crtc *crtc;
08d7b3d1 7950
1cff8f6b
DV		 7951 if (!drm_core_check_feature(dev, DRIVER_MODESET))
7952 return -ENODEV;
08d7b3d1 7953
c05422d5
DV		 7954 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
7955 DRM_MODE_OBJECT_CRTC);
08d7b3d1 7956
c05422d5 7957 if (!drmmode_obj) {
08d7b3d1
CW		 7958 DRM_ERROR("no such CRTC id\n");
7959 return -EINVAL;
7960 }
7961
c05422d5
DV		 7962 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
7963 pipe_from_crtc_id->pipe = crtc->pipe;
08d7b3d1 7964
c05422d5 7965 return 0;
08d7b3d1
CW		 7966}
7967
66a9278e 7968static int intel_encoder_clones(struct intel_encoder *encoder)
79e53945 7969{
66a9278e
DV		 7970 struct drm_device *dev = encoder->base.dev;
7971 struct intel_encoder *source_encoder;
79e53945 7972 int index_mask = 0;
79e53945
JB		 7973 int entry = 0;
7974
66a9278e
DV		 7975 list_for_each_entry(source_encoder,
7976 &dev->mode_config.encoder_list, base.head) {
7977
7978 if (encoder == source_encoder)
79e53945 7979 index_mask |= (1 << entry);
66a9278e
DV		 7980
7981 /* Intel hw has only one MUX where enocoders could be cloned. */
7982 if (encoder->cloneable && source_encoder->cloneable)
7983 index_mask |= (1 << entry);
7984
79e53945
JB		 7985 entry++;
7986 }
4ef69c7a 7987
79e53945
JB		 7988 return index_mask;
7989}
7990
4d302442
CW		 7991static bool has_edp_a(struct drm_device *dev)
7992{
7993 struct drm_i915_private *dev_priv = dev->dev_private;
7994
7995 if (!IS_MOBILE(dev))
7996 return false;
7997
7998 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
7999 return false;
8000
8001 if (IS_GEN5(dev) &&
8002 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
8003 return false;
8004
8005 return true;
8006}
8007
79e53945
JB		 8008static void intel_setup_outputs(struct drm_device *dev)
8009{
725e30ad 8010 struct drm_i915_private *dev_priv = dev->dev_private;
4ef69c7a 8011 struct intel_encoder *encoder;
cb0953d7 8012 bool dpd_is_edp = false;
f3cfcba6 8013 bool has_lvds;
79e53945 8014
f3cfcba6 8015 has_lvds = intel_lvds_init(dev);
c5d1b51d
CW		 8016 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
8017 /* disable the panel fitter on everything but LVDS */
8018 I915_WRITE(PFIT_CONTROL, 0);
8019 }
79e53945 8020
bad720ff 8021 if (HAS_PCH_SPLIT(dev)) {
cb0953d7 8022 dpd_is_edp = intel_dpd_is_edp(dev);
30ad48b7 8023
4d302442 8024 if (has_edp_a(dev))
ab9d7c30 8025 intel_dp_init(dev, DP_A, PORT_A);
32f9d658 8026
cb0953d7 8027 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
ab9d7c30 8028 intel_dp_init(dev, PCH_DP_D, PORT_D);
cb0953d7
AJ		 8029 }
8030
8031 intel_crt_init(dev);
8032
0e72a5b5
ED		 8033 if (IS_HASWELL(dev)) {
8034 int found;
8035
8036 /* Haswell uses DDI functions to detect digital outputs */
8037 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
8038 /* DDI A only supports eDP */
8039 if (found)
8040 intel_ddi_init(dev, PORT_A);
8041
8042 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
8043 * register */
8044 found = I915_READ(SFUSE_STRAP);
8045
8046 if (found & SFUSE_STRAP_DDIB_DETECTED)
8047 intel_ddi_init(dev, PORT_B);
8048 if (found & SFUSE_STRAP_DDIC_DETECTED)
8049 intel_ddi_init(dev, PORT_C);
8050 if (found & SFUSE_STRAP_DDID_DETECTED)
8051 intel_ddi_init(dev, PORT_D);
8052 } else if (HAS_PCH_SPLIT(dev)) {
cb0953d7
AJ		 8053 int found;
8054
30ad48b7 8055 if (I915_READ(HDMIB) & PORT_DETECTED) {
461ed3ca 8056 /* PCH SDVOB multiplex with HDMIB */
eef4eacb 8057 found = intel_sdvo_init(dev, PCH_SDVOB, true);
30ad48b7 8058 if (!found)
08d644ad 8059 intel_hdmi_init(dev, HDMIB, PORT_B);
5eb08b69 8060 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
ab9d7c30 8061 intel_dp_init(dev, PCH_DP_B, PORT_B);
30ad48b7
ZW		 8062 }
8063
8064 if (I915_READ(HDMIC) & PORT_DETECTED)
08d644ad 8065 intel_hdmi_init(dev, HDMIC, PORT_C);
30ad48b7 8066
b708a1d5 8067 if (!dpd_is_edp && I915_READ(HDMID) & PORT_DETECTED)
08d644ad 8068 intel_hdmi_init(dev, HDMID, PORT_D);
30ad48b7 8069
5eb08b69 8070 if (I915_READ(PCH_DP_C) & DP_DETECTED)
ab9d7c30 8071 intel_dp_init(dev, PCH_DP_C, PORT_C);
5eb08b69 8072
cb0953d7 8073 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
ab9d7c30 8074 intel_dp_init(dev, PCH_DP_D, PORT_D);
4a87d65d
JB		 8075 } else if (IS_VALLEYVIEW(dev)) {
8076 int found;
8077
19c03924
GB		 8078 /* Check for built-in panel first. Shares lanes with HDMI on SDVOC */
8079 if (I915_READ(DP_C) & DP_DETECTED)
8080 intel_dp_init(dev, DP_C, PORT_C);
8081
4a87d65d
JB		 8082 if (I915_READ(SDVOB) & PORT_DETECTED) {
8083 /* SDVOB multiplex with HDMIB */
8084 found = intel_sdvo_init(dev, SDVOB, true);
8085 if (!found)
08d644ad 8086 intel_hdmi_init(dev, SDVOB, PORT_B);
4a87d65d 8087 if (!found && (I915_READ(DP_B) & DP_DETECTED))
ab9d7c30 8088 intel_dp_init(dev, DP_B, PORT_B);
4a87d65d
JB		 8089 }
8090
8091 if (I915_READ(SDVOC) & PORT_DETECTED)
08d644ad 8092 intel_hdmi_init(dev, SDVOC, PORT_C);
5eb08b69 8093
103a196f 8094 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
27185ae1 8095 bool found = false;
7d57382e 8096
725e30ad 8097 if (I915_READ(SDVOB) & SDVO_DETECTED) {
b01f2c3a 8098 DRM_DEBUG_KMS("probing SDVOB\n");
eef4eacb 8099 found = intel_sdvo_init(dev, SDVOB, true);
b01f2c3a
JB		 8100 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
8101 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
08d644ad 8102 intel_hdmi_init(dev, SDVOB, PORT_B);
b01f2c3a 8103 }
27185ae1 8104
b01f2c3a
JB		 8105 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
8106 DRM_DEBUG_KMS("probing DP_B\n");
ab9d7c30 8107 intel_dp_init(dev, DP_B, PORT_B);
b01f2c3a 8108 }
725e30ad 8109 }
13520b05
KH		 8110
8111 /* Before G4X SDVOC doesn't have its own detect register */
13520b05 8112
b01f2c3a
JB		 8113 if (I915_READ(SDVOB) & SDVO_DETECTED) {
8114 DRM_DEBUG_KMS("probing SDVOC\n");
eef4eacb 8115 found = intel_sdvo_init(dev, SDVOC, false);
b01f2c3a 8116 }
27185ae1
ML		 8117
8118 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
8119
b01f2c3a
JB		 8120 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
8121 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
08d644ad 8122 intel_hdmi_init(dev, SDVOC, PORT_C);
b01f2c3a
JB		 8123 }
8124 if (SUPPORTS_INTEGRATED_DP(dev)) {
8125 DRM_DEBUG_KMS("probing DP_C\n");
ab9d7c30 8126 intel_dp_init(dev, DP_C, PORT_C);
b01f2c3a 8127 }
725e30ad 8128 }
27185ae1 8129
b01f2c3a
JB		 8130 if (SUPPORTS_INTEGRATED_DP(dev) &&
8131 (I915_READ(DP_D) & DP_DETECTED)) {
8132 DRM_DEBUG_KMS("probing DP_D\n");
ab9d7c30 8133 intel_dp_init(dev, DP_D, PORT_D);
b01f2c3a 8134 }
bad720ff 8135 } else if (IS_GEN2(dev))
79e53945
JB		 8136 intel_dvo_init(dev);
8137
103a196f 8138 if (SUPPORTS_TV(dev))
79e53945
JB		 8139 intel_tv_init(dev);
8140
4ef69c7a
CW		 8141 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
8142 encoder->base.possible_crtcs = encoder->crtc_mask;
8143 encoder->base.possible_clones =
66a9278e 8144 intel_encoder_clones(encoder);
79e53945 8145 }
47356eb6 8146
40579abe 8147 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
9fb526db 8148 ironlake_init_pch_refclk(dev);
79e53945
JB		 8149}
8150
8151static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
8152{
8153 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
79e53945
JB		 8154
8155 drm_framebuffer_cleanup(fb);
05394f39 8156 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
79e53945
JB		 8157
8158 kfree(intel_fb);
8159}
8160
8161static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
05394f39 8162 struct drm_file *file,
79e53945
JB		 8163 unsigned int *handle)
8164{
8165 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
05394f39 8166 struct drm_i915_gem_object *obj = intel_fb->obj;
79e53945 8167
05394f39 8168 return drm_gem_handle_create(file, &obj->base, handle);
79e53945
JB		 8169}
8170
8171static const struct drm_framebuffer_funcs intel_fb_funcs = {
8172 .destroy = intel_user_framebuffer_destroy,
8173 .create_handle = intel_user_framebuffer_create_handle,
8174};
8175
38651674
DA		 8176int intel_framebuffer_init(struct drm_device *dev,
8177 struct intel_framebuffer *intel_fb,
308e5bcb 8178 struct drm_mode_fb_cmd2 *mode_cmd,
05394f39 8179 struct drm_i915_gem_object *obj)
79e53945 8180{
79e53945
JB		 8181 int ret;
8182
05394f39 8183 if (obj->tiling_mode == I915_TILING_Y)
57cd6508
CW		 8184 return -EINVAL;
8185
308e5bcb 8186 if (mode_cmd->pitches[0] & 63)
57cd6508
CW		 8187 return -EINVAL;
8188
308e5bcb 8189 switch (mode_cmd->pixel_format) {
04b3924d
VS		 8190 case DRM_FORMAT_RGB332:
8191 case DRM_FORMAT_RGB565:
8192 case DRM_FORMAT_XRGB8888:
b250da79 8193 case DRM_FORMAT_XBGR8888:
04b3924d
VS		 8194 case DRM_FORMAT_ARGB8888:
8195 case DRM_FORMAT_XRGB2101010:
8196 case DRM_FORMAT_ARGB2101010:
308e5bcb 8197 /* RGB formats are common across chipsets */
b5626747 8198 break;
04b3924d
VS		 8199 case DRM_FORMAT_YUYV:
8200 case DRM_FORMAT_UYVY:
8201 case DRM_FORMAT_YVYU:
8202 case DRM_FORMAT_VYUY:
57cd6508
CW		 8203 break;
8204 default:
aca25848
ED		 8205 DRM_DEBUG_KMS("unsupported pixel format %u\n",
8206 mode_cmd->pixel_format);
57cd6508
CW		 8207 return -EINVAL;
8208 }
8209
79e53945
JB		 8210 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
8211 if (ret) {
8212 DRM_ERROR("framebuffer init failed %d\n", ret);
8213 return ret;
8214 }
8215
8216 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
79e53945 8217 intel_fb->obj = obj;
79e53945
JB		 8218 return 0;
8219}
8220
79e53945
JB		 8221static struct drm_framebuffer *
8222intel_user_framebuffer_create(struct drm_device *dev,
8223 struct drm_file *filp,
308e5bcb 8224 struct drm_mode_fb_cmd2 *mode_cmd)
79e53945 8225{
05394f39 8226 struct drm_i915_gem_object *obj;
79e53945 8227
308e5bcb
JB		 8228 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
8229 mode_cmd->handles[0]));
c8725226 8230 if (&obj->base == NULL)
cce13ff7 8231 return ERR_PTR(-ENOENT);
79e53945 8232
d2dff872 8233 return intel_framebuffer_create(dev, mode_cmd, obj);
79e53945
JB		 8234}
8235
79e53945 8236static const struct drm_mode_config_funcs intel_mode_funcs = {
79e53945 8237 .fb_create = intel_user_framebuffer_create,
eb1f8e4f 8238 .output_poll_changed = intel_fb_output_poll_changed,
79e53945
JB		 8239};
8240
e70236a8
JB		 8241/* Set up chip specific display functions */
8242static void intel_init_display(struct drm_device *dev)
8243{
8244 struct drm_i915_private *dev_priv = dev->dev_private;
8245
8246 /* We always want a DPMS function */
09b4ddf9
PZ		 8247 if (IS_HASWELL(dev)) {
8248 dev_priv->display.crtc_mode_set = haswell_crtc_mode_set;
4f771f10
PZ		 8249 dev_priv->display.crtc_enable = haswell_crtc_enable;
8250 dev_priv->display.crtc_disable = haswell_crtc_disable;
6441ab5f 8251 dev_priv->display.off = haswell_crtc_off;
09b4ddf9
PZ		 8252 dev_priv->display.update_plane = ironlake_update_plane;
8253 } else if (HAS_PCH_SPLIT(dev)) {
f564048e 8254 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
76e5a89c
DV		 8255 dev_priv->display.crtc_enable = ironlake_crtc_enable;
8256 dev_priv->display.crtc_disable = ironlake_crtc_disable;
ee7b9f93 8257 dev_priv->display.off = ironlake_crtc_off;
17638cd6 8258 dev_priv->display.update_plane = ironlake_update_plane;
f564048e 8259 } else {
f564048e 8260 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
76e5a89c
DV		 8261 dev_priv->display.crtc_enable = i9xx_crtc_enable;
8262 dev_priv->display.crtc_disable = i9xx_crtc_disable;
ee7b9f93 8263 dev_priv->display.off = i9xx_crtc_off;
17638cd6 8264 dev_priv->display.update_plane = i9xx_update_plane;
f564048e 8265 }
e70236a8 8266
e70236a8 8267 /* Returns the core display clock speed */
25eb05fc
JB		 8268 if (IS_VALLEYVIEW(dev))
8269 dev_priv->display.get_display_clock_speed =
8270 valleyview_get_display_clock_speed;
8271 else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
e70236a8
JB		 8272 dev_priv->display.get_display_clock_speed =
8273 i945_get_display_clock_speed;
8274 else if (IS_I915G(dev))
8275 dev_priv->display.get_display_clock_speed =
8276 i915_get_display_clock_speed;
f2b115e6 8277 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
e70236a8
JB		 8278 dev_priv->display.get_display_clock_speed =
8279 i9xx_misc_get_display_clock_speed;
8280 else if (IS_I915GM(dev))
8281 dev_priv->display.get_display_clock_speed =
8282 i915gm_get_display_clock_speed;
8283 else if (IS_I865G(dev))
8284 dev_priv->display.get_display_clock_speed =
8285 i865_get_display_clock_speed;
f0f8a9ce 8286 else if (IS_I85X(dev))
e70236a8
JB		 8287 dev_priv->display.get_display_clock_speed =
8288 i855_get_display_clock_speed;
8289 else /* 852, 830 */
8290 dev_priv->display.get_display_clock_speed =
8291 i830_get_display_clock_speed;
8292
7f8a8569 8293 if (HAS_PCH_SPLIT(dev)) {
f00a3ddf 8294 if (IS_GEN5(dev)) {
674cf967 8295 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
e0dac65e 8296 dev_priv->display.write_eld = ironlake_write_eld;
1398261a 8297 } else if (IS_GEN6(dev)) {
674cf967 8298 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
e0dac65e 8299 dev_priv->display.write_eld = ironlake_write_eld;
357555c0
JB		 8300 } else if (IS_IVYBRIDGE(dev)) {
8301 /* FIXME: detect B0+ stepping and use auto training */
8302 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
e0dac65e 8303 dev_priv->display.write_eld = ironlake_write_eld;
c82e4d26
ED		 8304 } else if (IS_HASWELL(dev)) {
8305 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
83358c85 8306 dev_priv->display.write_eld = haswell_write_eld;
7f8a8569
ZW		 8307 } else
8308 dev_priv->display.update_wm = NULL;
6067aaea 8309 } else if (IS_G4X(dev)) {
e0dac65e 8310 dev_priv->display.write_eld = g4x_write_eld;
e70236a8 8311 }
8c9f3aaf
JB		 8312
8313 /* Default just returns -ENODEV to indicate unsupported */
8314 dev_priv->display.queue_flip = intel_default_queue_flip;
8315
8316 switch (INTEL_INFO(dev)->gen) {
8317 case 2:
8318 dev_priv->display.queue_flip = intel_gen2_queue_flip;
8319 break;
8320
8321 case 3:
8322 dev_priv->display.queue_flip = intel_gen3_queue_flip;
8323 break;
8324
8325 case 4:
8326 case 5:
8327 dev_priv->display.queue_flip = intel_gen4_queue_flip;
8328 break;
8329
8330 case 6:
8331 dev_priv->display.queue_flip = intel_gen6_queue_flip;
8332 break;
7c9017e5
JB		 8333 case 7:
8334 dev_priv->display.queue_flip = intel_gen7_queue_flip;
8335 break;
8c9f3aaf 8336 }
e70236a8
JB		 8337}
8338
b690e96c
JB		 8339/*
8340 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
8341 * resume, or other times. This quirk makes sure that's the case for
8342 * affected systems.
8343 */
0206e353 8344static void quirk_pipea_force(struct drm_device *dev)
b690e96c
JB		 8345{
8346 struct drm_i915_private *dev_priv = dev->dev_private;
8347
8348 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
bc0daf48 8349 DRM_INFO("applying pipe a force quirk\n");
b690e96c
JB		 8350}
8351
435793df
KP		 8352/*
8353 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
8354 */
8355static void quirk_ssc_force_disable(struct drm_device *dev)
8356{
8357 struct drm_i915_private *dev_priv = dev->dev_private;
8358 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
bc0daf48 8359 DRM_INFO("applying lvds SSC disable quirk\n");
435793df
KP		 8360}
8361
4dca20ef 8362/*
5a15ab5b
CE		 8363 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
8364 * brightness value
4dca20ef
CE		 8365 */
8366static void quirk_invert_brightness(struct drm_device *dev)
8367{
8368 struct drm_i915_private *dev_priv = dev->dev_private;
8369 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
bc0daf48 8370 DRM_INFO("applying inverted panel brightness quirk\n");
435793df
KP		 8371}
8372
b690e96c
JB		 8373struct intel_quirk {
8374 int device;
8375 int subsystem_vendor;
8376 int subsystem_device;
8377 void (*hook)(struct drm_device *dev);
8378};
8379
c43b5634 8380static struct intel_quirk intel_quirks[] = {
b690e96c 8381 /* HP Mini needs pipe A force quirk (LP: #322104) */
0206e353 8382 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
b690e96c 8383
b690e96c
JB		 8384 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
8385 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
8386
b690e96c
JB		 8387 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
8388 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
8389
ccd0d36e 8390 /* 830/845 need to leave pipe A & dpll A up */
b690e96c 8391 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
dcdaed6e 8392 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
435793df
KP		 8393
8394 /* Lenovo U160 cannot use SSC on LVDS */
8395 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
070d329a
MAS		 8396
8397 /* Sony Vaio Y cannot use SSC on LVDS */
8398 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
5a15ab5b
CE		 8399
8400 /* Acer Aspire 5734Z must invert backlight brightness */
8401 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
b690e96c
JB		 8402};
8403
8404static void intel_init_quirks(struct drm_device *dev)
8405{
8406 struct pci_dev *d = dev->pdev;
8407 int i;
8408
8409 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
8410 struct intel_quirk *q = &intel_quirks[i];
8411
8412 if (d->device == q->device &&
8413 (d->subsystem_vendor == q->subsystem_vendor ||
8414 q->subsystem_vendor == PCI_ANY_ID) &&
8415 (d->subsystem_device == q->subsystem_device ||
8416 q->subsystem_device == PCI_ANY_ID))
8417 q->hook(dev);
8418 }
8419}
8420
9cce37f4
JB		 8421/* Disable the VGA plane that we never use */
8422static void i915_disable_vga(struct drm_device *dev)
8423{
8424 struct drm_i915_private *dev_priv = dev->dev_private;
8425 u8 sr1;
8426 u32 vga_reg;
8427
8428 if (HAS_PCH_SPLIT(dev))
8429 vga_reg = CPU_VGACNTRL;
8430 else
8431 vga_reg = VGACNTRL;
8432
8433 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
3fdcf431 8434 outb(SR01, VGA_SR_INDEX);
9cce37f4
JB		 8435 sr1 = inb(VGA_SR_DATA);
8436 outb(sr1 | 1<<5, VGA_SR_DATA);
8437 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
8438 udelay(300);
8439
8440 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
8441 POSTING_READ(vga_reg);
8442}
8443
f817586c
DV		 8444void intel_modeset_init_hw(struct drm_device *dev)
8445{
0232e927
ED		 8446 /* We attempt to init the necessary power wells early in the initialization
8447 * time, so the subsystems that expect power to be enabled can work.
8448 */
8449 intel_init_power_wells(dev);
8450
a8f78b58
ED		 8451 intel_prepare_ddi(dev);
8452
f817586c
DV		 8453 intel_init_clock_gating(dev);
8454
79f5b2c7 8455 mutex_lock(&dev->struct_mutex);
8090c6b9 8456 intel_enable_gt_powersave(dev);
79f5b2c7 8457 mutex_unlock(&dev->struct_mutex);
f817586c
DV		 8458}
8459
79e53945
JB		 8460void intel_modeset_init(struct drm_device *dev)
8461{
652c393a 8462 struct drm_i915_private *dev_priv = dev->dev_private;
b840d907 8463 int i, ret;
79e53945
JB		 8464
8465 drm_mode_config_init(dev);
8466
8467 dev->mode_config.min_width = 0;
8468 dev->mode_config.min_height = 0;
8469
019d96cb
DA		 8470 dev->mode_config.preferred_depth = 24;
8471 dev->mode_config.prefer_shadow = 1;
8472
e6ecefaa 8473 dev->mode_config.funcs = &intel_mode_funcs;
79e53945 8474
b690e96c
JB		 8475 intel_init_quirks(dev);
8476
1fa61106
ED		 8477 intel_init_pm(dev);
8478
e70236a8
JB		 8479 intel_init_display(dev);
8480
a6c45cf0
CW		 8481 if (IS_GEN2(dev)) {
8482 dev->mode_config.max_width = 2048;
8483 dev->mode_config.max_height = 2048;
8484 } else if (IS_GEN3(dev)) {
5e4d6fa7
KP		 8485 dev->mode_config.max_width = 4096;
8486 dev->mode_config.max_height = 4096;
79e53945 8487 } else {
a6c45cf0
CW		 8488 dev->mode_config.max_width = 8192;
8489 dev->mode_config.max_height = 8192;
79e53945 8490 }
dd2757f8 8491 dev->mode_config.fb_base = dev_priv->mm.gtt_base_addr;
79e53945 8492
28c97730 8493 DRM_DEBUG_KMS("%d display pipe%s available.\n",
a3524f1b 8494 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
79e53945 8495
a3524f1b 8496 for (i = 0; i < dev_priv->num_pipe; i++) {
79e53945 8497 intel_crtc_init(dev, i);
00c2064b
JB		 8498 ret = intel_plane_init(dev, i);
8499 if (ret)
8500 DRM_DEBUG_KMS("plane %d init failed: %d\n", i, ret);
79e53945
JB		 8501 }
8502
79f689aa 8503 intel_cpu_pll_init(dev);
ee7b9f93
JB		 8504 intel_pch_pll_init(dev);
8505
9cce37f4
JB		 8506 /* Just disable it once at startup */
8507 i915_disable_vga(dev);
79e53945 8508 intel_setup_outputs(dev);
2c7111db
CW		 8509}
8510
24929352
DV		 8511static void
8512intel_connector_break_all_links(struct intel_connector *connector)
8513{
8514 connector->base.dpms = DRM_MODE_DPMS_OFF;
8515 connector->base.encoder = NULL;
8516 connector->encoder->connectors_active = false;
8517 connector->encoder->base.crtc = NULL;
8518}
8519
7fad798e
DV		 8520static void intel_enable_pipe_a(struct drm_device *dev)
8521{
8522 struct intel_connector *connector;
8523 struct drm_connector *crt = NULL;
8524 struct intel_load_detect_pipe load_detect_temp;
8525
8526 /* We can't just switch on the pipe A, we need to set things up with a
8527 * proper mode and output configuration. As a gross hack, enable pipe A
8528 * by enabling the load detect pipe once. */
8529 list_for_each_entry(connector,
8530 &dev->mode_config.connector_list,
8531 base.head) {
8532 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
8533 crt = &connector->base;
8534 break;
8535 }
8536 }
8537
8538 if (!crt)
8539 return;
8540
8541 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp))
8542 intel_release_load_detect_pipe(crt, &load_detect_temp);
8543
8544
8545}
8546
fa555837
DV		 8547static bool
8548intel_check_plane_mapping(struct intel_crtc *crtc)
8549{
8550 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
8551 u32 reg, val;
8552
8553 if (dev_priv->num_pipe == 1)
8554 return true;
8555
8556 reg = DSPCNTR(!crtc->plane);
8557 val = I915_READ(reg);
8558
8559 if ((val & DISPLAY_PLANE_ENABLE) &&
8560 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
8561 return false;
8562
8563 return true;
8564}
8565
24929352
DV		 8566static void intel_sanitize_crtc(struct intel_crtc *crtc)
8567{
8568 struct drm_device *dev = crtc->base.dev;
8569 struct drm_i915_private *dev_priv = dev->dev_private;
fa555837 8570 u32 reg;
24929352 8571
24929352 8572 /* Clear any frame start delays used for debugging left by the BIOS */
702e7a56 8573 reg = PIPECONF(crtc->cpu_transcoder);
24929352
DV		 8574 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
8575
8576 /* We need to sanitize the plane -> pipe mapping first because this will
fa555837
DV		 8577 * disable the crtc (and hence change the state) if it is wrong. Note
8578 * that gen4+ has a fixed plane -> pipe mapping. */
8579 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
24929352
DV		 8580 struct intel_connector *connector;
8581 bool plane;
8582
24929352
DV		 8583 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
8584 crtc->base.base.id);
8585
8586 /* Pipe has the wrong plane attached and the plane is active.
8587 * Temporarily change the plane mapping and disable everything
8588 * ... */
8589 plane = crtc->plane;
8590 crtc->plane = !plane;
8591 dev_priv->display.crtc_disable(&crtc->base);
8592 crtc->plane = plane;
8593
8594 /* ... and break all links. */
8595 list_for_each_entry(connector, &dev->mode_config.connector_list,
8596 base.head) {
8597 if (connector->encoder->base.crtc != &crtc->base)
8598 continue;
8599
8600 intel_connector_break_all_links(connector);
8601 }
8602
8603 WARN_ON(crtc->active);
8604 crtc->base.enabled = false;
8605 }
24929352 8606
7fad798e
DV		 8607 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
8608 crtc->pipe == PIPE_A && !crtc->active) {
8609 /* BIOS forgot to enable pipe A, this mostly happens after
8610 * resume. Force-enable the pipe to fix this, the update_dpms
8611 * call below we restore the pipe to the right state, but leave
8612 * the required bits on. */
8613 intel_enable_pipe_a(dev);
8614 }
8615
24929352
DV		 8616 /* Adjust the state of the output pipe according to whether we
8617 * have active connectors/encoders. */
8618 intel_crtc_update_dpms(&crtc->base);
8619
8620 if (crtc->active != crtc->base.enabled) {
8621 struct intel_encoder *encoder;
8622
8623 /* This can happen either due to bugs in the get_hw_state
8624 * functions or because the pipe is force-enabled due to the
8625 * pipe A quirk. */
8626 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
8627 crtc->base.base.id,
8628 crtc->base.enabled ? "enabled" : "disabled",
8629 crtc->active ? "enabled" : "disabled");
8630
8631 crtc->base.enabled = crtc->active;
8632
8633 /* Because we only establish the connector -> encoder ->
8634 * crtc links if something is active, this means the
8635 * crtc is now deactivated. Break the links. connector
8636 * -> encoder links are only establish when things are
8637 * actually up, hence no need to break them. */
8638 WARN_ON(crtc->active);
8639
8640 for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
8641 WARN_ON(encoder->connectors_active);
8642 encoder->base.crtc = NULL;
8643 }
8644 }
8645}
8646
8647static void intel_sanitize_encoder(struct intel_encoder *encoder)
8648{
8649 struct intel_connector *connector;
8650 struct drm_device *dev = encoder->base.dev;
8651
8652 /* We need to check both for a crtc link (meaning that the
8653 * encoder is active and trying to read from a pipe) and the
8654 * pipe itself being active. */
8655 bool has_active_crtc = encoder->base.crtc &&
8656 to_intel_crtc(encoder->base.crtc)->active;
8657
8658 if (encoder->connectors_active && !has_active_crtc) {
8659 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
8660 encoder->base.base.id,
8661 drm_get_encoder_name(&encoder->base));
8662
8663 /* Connector is active, but has no active pipe. This is
8664 * fallout from our resume register restoring. Disable
8665 * the encoder manually again. */
8666 if (encoder->base.crtc) {
8667 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
8668 encoder->base.base.id,
8669 drm_get_encoder_name(&encoder->base));
8670 encoder->disable(encoder);
8671 }
8672
8673 /* Inconsistent output/port/pipe state happens presumably due to
8674 * a bug in one of the get_hw_state functions. Or someplace else
8675 * in our code, like the register restore mess on resume. Clamp
8676 * things to off as a safer default. */
8677 list_for_each_entry(connector,
8678 &dev->mode_config.connector_list,
8679 base.head) {
8680 if (connector->encoder != encoder)
8681 continue;
8682
8683 intel_connector_break_all_links(connector);
8684 }
8685 }
8686 /* Enabled encoders without active connectors will be fixed in
8687 * the crtc fixup. */
8688}
8689
8690/* Scan out the current hw modeset state, sanitizes it and maps it into the drm
8691 * and i915 state tracking structures. */
8692void intel_modeset_setup_hw_state(struct drm_device *dev)
8693{
8694 struct drm_i915_private *dev_priv = dev->dev_private;
8695 enum pipe pipe;
8696 u32 tmp;
8697 struct intel_crtc *crtc;
8698 struct intel_encoder *encoder;
8699 struct intel_connector *connector;
8700
e28d54cb
PZ		 8701 if (IS_HASWELL(dev)) {
8702 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
8703
8704 if (tmp & TRANS_DDI_FUNC_ENABLE) {
8705 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
8706 case TRANS_DDI_EDP_INPUT_A_ON:
8707 case TRANS_DDI_EDP_INPUT_A_ONOFF:
8708 pipe = PIPE_A;
8709 break;
8710 case TRANS_DDI_EDP_INPUT_B_ONOFF:
8711 pipe = PIPE_B;
8712 break;
8713 case TRANS_DDI_EDP_INPUT_C_ONOFF:
8714 pipe = PIPE_C;
8715 break;
8716 }
8717
8718 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
8719 crtc->cpu_transcoder = TRANSCODER_EDP;
8720
8721 DRM_DEBUG_KMS("Pipe %c using transcoder EDP\n",
8722 pipe_name(pipe));
8723 }
8724 }
8725
24929352
DV		 8726 for_each_pipe(pipe) {
8727 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
8728
702e7a56 8729 tmp = I915_READ(PIPECONF(crtc->cpu_transcoder));
24929352
DV		 8730 if (tmp & PIPECONF_ENABLE)
8731 crtc->active = true;
8732 else
8733 crtc->active = false;
8734
8735 crtc->base.enabled = crtc->active;
8736
8737 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
8738 crtc->base.base.id,
8739 crtc->active ? "enabled" : "disabled");
8740 }
8741
6441ab5f
PZ		 8742 if (IS_HASWELL(dev))
8743 intel_ddi_setup_hw_pll_state(dev);
8744
24929352
DV		 8745 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
8746 base.head) {
8747 pipe = 0;
8748
8749 if (encoder->get_hw_state(encoder, &pipe)) {
8750 encoder->base.crtc =
8751 dev_priv->pipe_to_crtc_mapping[pipe];
8752 } else {
8753 encoder->base.crtc = NULL;
8754 }
8755
8756 encoder->connectors_active = false;
8757 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe=%i\n",
8758 encoder->base.base.id,
8759 drm_get_encoder_name(&encoder->base),
8760 encoder->base.crtc ? "enabled" : "disabled",
8761 pipe);
8762 }
8763
8764 list_for_each_entry(connector, &dev->mode_config.connector_list,
8765 base.head) {
8766 if (connector->get_hw_state(connector)) {
8767 connector->base.dpms = DRM_MODE_DPMS_ON;
8768 connector->encoder->connectors_active = true;
8769 connector->base.encoder = &connector->encoder->base;
8770 } else {
8771 connector->base.dpms = DRM_MODE_DPMS_OFF;
8772 connector->base.encoder = NULL;
8773 }
8774 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
8775 connector->base.base.id,
8776 drm_get_connector_name(&connector->base),
8777 connector->base.encoder ? "enabled" : "disabled");
8778 }
8779
8780 /* HW state is read out, now we need to sanitize this mess. */
8781 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
8782 base.head) {
8783 intel_sanitize_encoder(encoder);
8784 }
8785
8786 for_each_pipe(pipe) {
8787 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
8788 intel_sanitize_crtc(crtc);
8789 }
9a935856
DV		 8790
8791 intel_modeset_update_staged_output_state(dev);
8af6cf88
DV		 8792
8793 intel_modeset_check_state(dev);
2e938892
DV		 8794
8795 drm_mode_config_reset(dev);
24929352
DV		 8796}
8797
2c7111db
CW		 8798void intel_modeset_gem_init(struct drm_device *dev)
8799{
1833b134 8800 intel_modeset_init_hw(dev);
02e792fb
DV		 8801
8802 intel_setup_overlay(dev);
24929352
DV		 8803
8804 intel_modeset_setup_hw_state(dev);
79e53945
JB		 8805}
8806
8807void intel_modeset_cleanup(struct drm_device *dev)
8808{
652c393a
JB		 8809 struct drm_i915_private *dev_priv = dev->dev_private;
8810 struct drm_crtc *crtc;
8811 struct intel_crtc *intel_crtc;
8812
f87ea761 8813 drm_kms_helper_poll_fini(dev);
652c393a
JB		 8814 mutex_lock(&dev->struct_mutex);
8815
723bfd70
JB		 8816 intel_unregister_dsm_handler();
8817
8818
652c393a
JB		 8819 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
8820 /* Skip inactive CRTCs */
8821 if (!crtc->fb)
8822 continue;
8823
8824 intel_crtc = to_intel_crtc(crtc);
3dec0095 8825 intel_increase_pllclock(crtc);
652c393a
JB		 8826 }
8827
973d04f9 8828 intel_disable_fbc(dev);
e70236a8 8829
8090c6b9 8830 intel_disable_gt_powersave(dev);
0cdab21f 8831
930ebb46
DV		 8832 ironlake_teardown_rc6(dev);
8833
57f350b6
JB		 8834 if (IS_VALLEYVIEW(dev))
8835 vlv_init_dpio(dev);
8836
69341a5e
KH		 8837 mutex_unlock(&dev->struct_mutex);
8838
6c0d9350
DV		 8839 /* Disable the irq before mode object teardown, for the irq might
8840 * enqueue unpin/hotplug work. */
8841 drm_irq_uninstall(dev);
8842 cancel_work_sync(&dev_priv->hotplug_work);
c6a828d3 8843 cancel_work_sync(&dev_priv->rps.work);
6c0d9350 8844
1630fe75
CW		 8845 /* flush any delayed tasks or pending work */
8846 flush_scheduled_work();
8847
79e53945
JB		 8848 drm_mode_config_cleanup(dev);
8849}
8850
f1c79df3
ZW		 8851/*
8852 * Return which encoder is currently attached for connector.
8853 */
df0e9248 8854struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
79e53945 8855{
df0e9248
CW		 8856 return &intel_attached_encoder(connector)->base;
8857}
f1c79df3 8858
df0e9248
CW		 8859void intel_connector_attach_encoder(struct intel_connector *connector,
8860 struct intel_encoder *encoder)
8861{
8862 connector->encoder = encoder;
8863 drm_mode_connector_attach_encoder(&connector->base,
8864 &encoder->base);
79e53945 8865}
28d52043
DA		 8866
8867/*
8868 * set vga decode state - true == enable VGA decode
8869 */
8870int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
8871{
8872 struct drm_i915_private *dev_priv = dev->dev_private;
8873 u16 gmch_ctrl;
8874
8875 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
8876 if (state)
8877 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
8878 else
8879 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
8880 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
8881 return 0;
8882}
c4a1d9e4
CW		 8883
8884#ifdef CONFIG_DEBUG_FS
8885#include <linux/seq_file.h>
8886
8887struct intel_display_error_state {
8888 struct intel_cursor_error_state {
8889 u32 control;
8890 u32 position;
8891 u32 base;
8892 u32 size;
52331309 8893 } cursor[I915_MAX_PIPES];
c4a1d9e4
CW		 8894
8895 struct intel_pipe_error_state {
8896 u32 conf;
8897 u32 source;
8898
8899 u32 htotal;
8900 u32 hblank;
8901 u32 hsync;
8902 u32 vtotal;
8903 u32 vblank;
8904 u32 vsync;
52331309 8905 } pipe[I915_MAX_PIPES];
c4a1d9e4
CW		 8906
8907 struct intel_plane_error_state {
8908 u32 control;
8909 u32 stride;
8910 u32 size;
8911 u32 pos;
8912 u32 addr;
8913 u32 surface;
8914 u32 tile_offset;
52331309 8915 } plane[I915_MAX_PIPES];
c4a1d9e4
CW		 8916};
8917
8918struct intel_display_error_state *
8919intel_display_capture_error_state(struct drm_device *dev)
8920{
0206e353 8921 drm_i915_private_t *dev_priv = dev->dev_private;
c4a1d9e4 8922 struct intel_display_error_state *error;
702e7a56 8923 enum transcoder cpu_transcoder;
c4a1d9e4
CW		 8924 int i;
8925
8926 error = kmalloc(sizeof(*error), GFP_ATOMIC);
8927 if (error == NULL)
8928 return NULL;
8929
52331309 8930 for_each_pipe(i) {
702e7a56
PZ		 8931 cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, i);
8932
c4a1d9e4
CW		 8933 error->cursor[i].control = I915_READ(CURCNTR(i));
8934 error->cursor[i].position = I915_READ(CURPOS(i));
8935 error->cursor[i].base = I915_READ(CURBASE(i));
8936
8937 error->plane[i].control = I915_READ(DSPCNTR(i));
8938 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
8939 error->plane[i].size = I915_READ(DSPSIZE(i));
0206e353 8940 error->plane[i].pos = I915_READ(DSPPOS(i));
c4a1d9e4
CW		 8941 error->plane[i].addr = I915_READ(DSPADDR(i));
8942 if (INTEL_INFO(dev)->gen >= 4) {
8943 error->plane[i].surface = I915_READ(DSPSURF(i));
8944 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
8945 }
8946
702e7a56 8947 error->pipe[i].conf = I915_READ(PIPECONF(cpu_transcoder));
c4a1d9e4
CW		 8948 error->pipe[i].source = I915_READ(PIPESRC(i));
8949 error->pipe[i].htotal = I915_READ(HTOTAL(i));
8950 error->pipe[i].hblank = I915_READ(HBLANK(i));
8951 error->pipe[i].hsync = I915_READ(HSYNC(i));
8952 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
8953 error->pipe[i].vblank = I915_READ(VBLANK(i));
8954 error->pipe[i].vsync = I915_READ(VSYNC(i));
8955 }
8956
8957 return error;
8958}
8959
8960void
8961intel_display_print_error_state(struct seq_file *m,
8962 struct drm_device *dev,
8963 struct intel_display_error_state *error)
8964{
52331309 8965 drm_i915_private_t *dev_priv = dev->dev_private;
c4a1d9e4
CW		 8966 int i;
8967
52331309
DL		 8968 seq_printf(m, "Num Pipes: %d\n", dev_priv->num_pipe);
8969 for_each_pipe(i) {
c4a1d9e4
CW		 8970 seq_printf(m, "Pipe [%d]:\n", i);
8971 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
8972 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
8973 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
8974 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
8975 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
8976 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
8977 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
8978 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
8979
8980 seq_printf(m, "Plane [%d]:\n", i);
8981 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
8982 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
8983 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
8984 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
8985 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
8986 if (INTEL_INFO(dev)->gen >= 4) {
8987 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
8988 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
8989 }
8990
8991 seq_printf(m, "Cursor [%d]:\n", i);
8992 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
8993 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
8994 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);
8995 }
8996}
8997#endif
Linux kernel - Deliverables
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