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drm/radeon/kms: update new pll algo
[deliverable/linux.git] / drivers / gpu / drm / radeon / radeon_legacy_crtc.c
1 /*
2 * Copyright 2007-8 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: Dave Airlie
24 * Alex Deucher
25 */
26 #include <drm/drmP.h>
27 #include <drm/drm_crtc_helper.h>
28 #include <drm/radeon_drm.h>
29 #include "radeon_fixed.h"
30 #include "radeon.h"
31 #include "atom.h"
32
33 static void radeon_overscan_setup(struct drm_crtc *crtc,
34 struct drm_display_mode *mode)
35 {
36 struct drm_device *dev = crtc->dev;
37 struct radeon_device *rdev = dev->dev_private;
38 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
39
40 WREG32(RADEON_OVR_CLR + radeon_crtc->crtc_offset, 0);
41 WREG32(RADEON_OVR_WID_LEFT_RIGHT + radeon_crtc->crtc_offset, 0);
42 WREG32(RADEON_OVR_WID_TOP_BOTTOM + radeon_crtc->crtc_offset, 0);
43 }
44
45 static void radeon_legacy_rmx_mode_set(struct drm_crtc *crtc,
46 struct drm_display_mode *mode)
47 {
48 struct drm_device *dev = crtc->dev;
49 struct radeon_device *rdev = dev->dev_private;
50 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
51 int xres = mode->hdisplay;
52 int yres = mode->vdisplay;
53 bool hscale = true, vscale = true;
54 int hsync_wid;
55 int vsync_wid;
56 int hsync_start;
57 int blank_width;
58 u32 scale, inc, crtc_more_cntl;
59 u32 fp_horz_stretch, fp_vert_stretch, fp_horz_vert_active;
60 u32 fp_h_sync_strt_wid, fp_crtc_h_total_disp;
61 u32 fp_v_sync_strt_wid, fp_crtc_v_total_disp;
62 struct drm_display_mode *native_mode = &radeon_crtc->native_mode;
63
64 fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH) &
65 (RADEON_VERT_STRETCH_RESERVED |
66 RADEON_VERT_AUTO_RATIO_INC);
67 fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH) &
68 (RADEON_HORZ_FP_LOOP_STRETCH |
69 RADEON_HORZ_AUTO_RATIO_INC);
70
71 crtc_more_cntl = 0;
72 if ((rdev->family == CHIP_RS100) ||
73 (rdev->family == CHIP_RS200)) {
74 /* This is to workaround the asic bug for RMX, some versions
75 of BIOS dosen't have this register initialized correctly. */
76 crtc_more_cntl |= RADEON_CRTC_H_CUTOFF_ACTIVE_EN;
77 }
78
79
80 fp_crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
81 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
82
83 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
84 if (!hsync_wid)
85 hsync_wid = 1;
86 hsync_start = mode->crtc_hsync_start - 8;
87
88 fp_h_sync_strt_wid = ((hsync_start & 0x1fff)
89 | ((hsync_wid & 0x3f) << 16)
90 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
91 ? RADEON_CRTC_H_SYNC_POL
92 : 0));
93
94 fp_crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
95 | ((mode->crtc_vdisplay - 1) << 16));
96
97 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
98 if (!vsync_wid)
99 vsync_wid = 1;
100
101 fp_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
102 | ((vsync_wid & 0x1f) << 16)
103 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
104 ? RADEON_CRTC_V_SYNC_POL
105 : 0));
106
107 fp_horz_vert_active = 0;
108
109 if (native_mode->hdisplay == 0 ||
110 native_mode->vdisplay == 0) {
111 hscale = false;
112 vscale = false;
113 } else {
114 if (xres > native_mode->hdisplay)
115 xres = native_mode->hdisplay;
116 if (yres > native_mode->vdisplay)
117 yres = native_mode->vdisplay;
118
119 if (xres == native_mode->hdisplay)
120 hscale = false;
121 if (yres == native_mode->vdisplay)
122 vscale = false;
123 }
124
125 switch (radeon_crtc->rmx_type) {
126 case RMX_FULL:
127 case RMX_ASPECT:
128 if (!hscale)
129 fp_horz_stretch |= ((xres/8-1) << 16);
130 else {
131 inc = (fp_horz_stretch & RADEON_HORZ_AUTO_RATIO_INC) ? 1 : 0;
132 scale = ((xres + inc) * RADEON_HORZ_STRETCH_RATIO_MAX)
133 / native_mode->hdisplay + 1;
134 fp_horz_stretch |= (((scale) & RADEON_HORZ_STRETCH_RATIO_MASK) |
135 RADEON_HORZ_STRETCH_BLEND |
136 RADEON_HORZ_STRETCH_ENABLE |
137 ((native_mode->hdisplay/8-1) << 16));
138 }
139
140 if (!vscale)
141 fp_vert_stretch |= ((yres-1) << 12);
142 else {
143 inc = (fp_vert_stretch & RADEON_VERT_AUTO_RATIO_INC) ? 1 : 0;
144 scale = ((yres + inc) * RADEON_VERT_STRETCH_RATIO_MAX)
145 / native_mode->vdisplay + 1;
146 fp_vert_stretch |= (((scale) & RADEON_VERT_STRETCH_RATIO_MASK) |
147 RADEON_VERT_STRETCH_ENABLE |
148 RADEON_VERT_STRETCH_BLEND |
149 ((native_mode->vdisplay-1) << 12));
150 }
151 break;
152 case RMX_CENTER:
153 fp_horz_stretch |= ((xres/8-1) << 16);
154 fp_vert_stretch |= ((yres-1) << 12);
155
156 crtc_more_cntl |= (RADEON_CRTC_AUTO_HORZ_CENTER_EN |
157 RADEON_CRTC_AUTO_VERT_CENTER_EN);
158
159 blank_width = (mode->crtc_hblank_end - mode->crtc_hblank_start) / 8;
160 if (blank_width > 110)
161 blank_width = 110;
162
163 fp_crtc_h_total_disp = (((blank_width) & 0x3ff)
164 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
165
166 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
167 if (!hsync_wid)
168 hsync_wid = 1;
169
170 fp_h_sync_strt_wid = ((((mode->crtc_hsync_start - mode->crtc_hblank_start) / 8) & 0x1fff)
171 | ((hsync_wid & 0x3f) << 16)
172 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
173 ? RADEON_CRTC_H_SYNC_POL
174 : 0));
175
176 fp_crtc_v_total_disp = (((mode->crtc_vblank_end - mode->crtc_vblank_start) & 0xffff)
177 | ((mode->crtc_vdisplay - 1) << 16));
178
179 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
180 if (!vsync_wid)
181 vsync_wid = 1;
182
183 fp_v_sync_strt_wid = ((((mode->crtc_vsync_start - mode->crtc_vblank_start) & 0xfff)
184 | ((vsync_wid & 0x1f) << 16)
185 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
186 ? RADEON_CRTC_V_SYNC_POL
187 : 0)));
188
189 fp_horz_vert_active = (((native_mode->vdisplay) & 0xfff) |
190 (((native_mode->hdisplay / 8) & 0x1ff) << 16));
191 break;
192 case RMX_OFF:
193 default:
194 fp_horz_stretch |= ((xres/8-1) << 16);
195 fp_vert_stretch |= ((yres-1) << 12);
196 break;
197 }
198
199 WREG32(RADEON_FP_HORZ_STRETCH, fp_horz_stretch);
200 WREG32(RADEON_FP_VERT_STRETCH, fp_vert_stretch);
201 WREG32(RADEON_CRTC_MORE_CNTL, crtc_more_cntl);
202 WREG32(RADEON_FP_HORZ_VERT_ACTIVE, fp_horz_vert_active);
203 WREG32(RADEON_FP_H_SYNC_STRT_WID, fp_h_sync_strt_wid);
204 WREG32(RADEON_FP_V_SYNC_STRT_WID, fp_v_sync_strt_wid);
205 WREG32(RADEON_FP_CRTC_H_TOTAL_DISP, fp_crtc_h_total_disp);
206 WREG32(RADEON_FP_CRTC_V_TOTAL_DISP, fp_crtc_v_total_disp);
207 }
208
209 void radeon_restore_common_regs(struct drm_device *dev)
210 {
211 /* don't need this yet */
212 }
213
214 static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev)
215 {
216 struct radeon_device *rdev = dev->dev_private;
217 int i = 0;
218
219 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
220 the cause yet, but this workaround will mask the problem for now.
221 Other chips usually will pass at the very first test, so the
222 workaround shouldn't have any effect on them. */
223 for (i = 0;
224 (i < 10000 &&
225 RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
226 i++);
227 }
228
229 static void radeon_pll_write_update(struct drm_device *dev)
230 {
231 struct radeon_device *rdev = dev->dev_private;
232
233 while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);
234
235 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
236 RADEON_PPLL_ATOMIC_UPDATE_W,
237 ~(RADEON_PPLL_ATOMIC_UPDATE_W));
238 }
239
240 static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev)
241 {
242 struct radeon_device *rdev = dev->dev_private;
243 int i = 0;
244
245
246 /* FIXME: Certain revisions of R300 can't recover here. Not sure of
247 the cause yet, but this workaround will mask the problem for now.
248 Other chips usually will pass at the very first test, so the
249 workaround shouldn't have any effect on them. */
250 for (i = 0;
251 (i < 10000 &&
252 RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
253 i++);
254 }
255
256 static void radeon_pll2_write_update(struct drm_device *dev)
257 {
258 struct radeon_device *rdev = dev->dev_private;
259
260 while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);
261
262 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
263 RADEON_P2PLL_ATOMIC_UPDATE_W,
264 ~(RADEON_P2PLL_ATOMIC_UPDATE_W));
265 }
266
267 static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div,
268 uint16_t fb_div)
269 {
270 unsigned int vcoFreq;
271
272 if (!ref_div)
273 return 1;
274
275 vcoFreq = ((unsigned)ref_freq & fb_div) / ref_div;
276
277 /*
278 * This is horribly crude: the VCO frequency range is divided into
279 * 3 parts, each part having a fixed PLL gain value.
280 */
281 if (vcoFreq >= 30000)
282 /*
283 * [300..max] MHz : 7
284 */
285 return 7;
286 else if (vcoFreq >= 18000)
287 /*
288 * [180..300) MHz : 4
289 */
290 return 4;
291 else
292 /*
293 * [0..180) MHz : 1
294 */
295 return 1;
296 }
297
298 void radeon_crtc_dpms(struct drm_crtc *crtc, int mode)
299 {
300 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
301 struct drm_device *dev = crtc->dev;
302 struct radeon_device *rdev = dev->dev_private;
303 uint32_t mask;
304
305 if (radeon_crtc->crtc_id)
306 mask = (RADEON_CRTC2_DISP_DIS |
307 RADEON_CRTC2_VSYNC_DIS |
308 RADEON_CRTC2_HSYNC_DIS |
309 RADEON_CRTC2_DISP_REQ_EN_B);
310 else
311 mask = (RADEON_CRTC_DISPLAY_DIS |
312 RADEON_CRTC_VSYNC_DIS |
313 RADEON_CRTC_HSYNC_DIS);
314
315 switch (mode) {
316 case DRM_MODE_DPMS_ON:
317 if (radeon_crtc->crtc_id)
318 WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~(RADEON_CRTC2_EN | mask));
319 else {
320 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN |
321 RADEON_CRTC_DISP_REQ_EN_B));
322 WREG32_P(RADEON_CRTC_EXT_CNTL, 0, ~mask);
323 }
324 drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
325 radeon_crtc_load_lut(crtc);
326 break;
327 case DRM_MODE_DPMS_STANDBY:
328 case DRM_MODE_DPMS_SUSPEND:
329 case DRM_MODE_DPMS_OFF:
330 drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id);
331 if (radeon_crtc->crtc_id)
332 WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~(RADEON_CRTC2_EN | mask));
333 else {
334 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN |
335 RADEON_CRTC_DISP_REQ_EN_B));
336 WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~mask);
337 }
338 break;
339 }
340 }
341
342 int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y,
343 struct drm_framebuffer *old_fb)
344 {
345 struct drm_device *dev = crtc->dev;
346 struct radeon_device *rdev = dev->dev_private;
347 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
348 struct radeon_framebuffer *radeon_fb;
349 struct drm_gem_object *obj;
350 struct radeon_bo *rbo;
351 uint64_t base;
352 uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0;
353 uint32_t crtc_pitch, pitch_pixels;
354 uint32_t tiling_flags;
355 int format;
356 uint32_t gen_cntl_reg, gen_cntl_val;
357 int r;
358
359 DRM_DEBUG("\n");
360 /* no fb bound */
361 if (!crtc->fb) {
362 DRM_DEBUG("No FB bound\n");
363 return 0;
364 }
365
366 radeon_fb = to_radeon_framebuffer(crtc->fb);
367
368 switch (crtc->fb->bits_per_pixel) {
369 case 8:
370 format = 2;
371 break;
372 case 15: /* 555 */
373 format = 3;
374 break;
375 case 16: /* 565 */
376 format = 4;
377 break;
378 case 24: /* RGB */
379 format = 5;
380 break;
381 case 32: /* xRGB */
382 format = 6;
383 break;
384 default:
385 return false;
386 }
387
388 /* Pin framebuffer & get tilling informations */
389 obj = radeon_fb->obj;
390 rbo = obj->driver_private;
391 r = radeon_bo_reserve(rbo, false);
392 if (unlikely(r != 0))
393 return r;
394 r = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, &base);
395 if (unlikely(r != 0)) {
396 radeon_bo_unreserve(rbo);
397 return -EINVAL;
398 }
399 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
400 radeon_bo_unreserve(rbo);
401 if (tiling_flags & RADEON_TILING_MICRO)
402 DRM_ERROR("trying to scanout microtiled buffer\n");
403
404 /* if scanout was in GTT this really wouldn't work */
405 /* crtc offset is from display base addr not FB location */
406 radeon_crtc->legacy_display_base_addr = rdev->mc.vram_start;
407
408 base -= radeon_crtc->legacy_display_base_addr;
409
410 crtc_offset_cntl = 0;
411
412 pitch_pixels = crtc->fb->pitch / (crtc->fb->bits_per_pixel / 8);
413 crtc_pitch = (((pitch_pixels * crtc->fb->bits_per_pixel) +
414 ((crtc->fb->bits_per_pixel * 8) - 1)) /
415 (crtc->fb->bits_per_pixel * 8));
416 crtc_pitch |= crtc_pitch << 16;
417
418
419 if (tiling_flags & RADEON_TILING_MACRO) {
420 if (ASIC_IS_R300(rdev))
421 crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN |
422 R300_CRTC_MICRO_TILE_BUFFER_DIS |
423 R300_CRTC_MACRO_TILE_EN);
424 else
425 crtc_offset_cntl |= RADEON_CRTC_TILE_EN;
426 } else {
427 if (ASIC_IS_R300(rdev))
428 crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN |
429 R300_CRTC_MICRO_TILE_BUFFER_DIS |
430 R300_CRTC_MACRO_TILE_EN);
431 else
432 crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN;
433 }
434
435 if (tiling_flags & RADEON_TILING_MACRO) {
436 if (ASIC_IS_R300(rdev)) {
437 crtc_tile_x0_y0 = x | (y << 16);
438 base &= ~0x7ff;
439 } else {
440 int byteshift = crtc->fb->bits_per_pixel >> 4;
441 int tile_addr = (((y >> 3) * pitch_pixels + x) >> (8 - byteshift)) << 11;
442 base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8);
443 crtc_offset_cntl |= (y % 16);
444 }
445 } else {
446 int offset = y * pitch_pixels + x;
447 switch (crtc->fb->bits_per_pixel) {
448 case 8:
449 offset *= 1;
450 break;
451 case 15:
452 case 16:
453 offset *= 2;
454 break;
455 case 24:
456 offset *= 3;
457 break;
458 case 32:
459 offset *= 4;
460 break;
461 default:
462 return false;
463 }
464 base += offset;
465 }
466
467 base &= ~7;
468
469 if (radeon_crtc->crtc_id == 1)
470 gen_cntl_reg = RADEON_CRTC2_GEN_CNTL;
471 else
472 gen_cntl_reg = RADEON_CRTC_GEN_CNTL;
473
474 gen_cntl_val = RREG32(gen_cntl_reg);
475 gen_cntl_val &= ~(0xf << 8);
476 gen_cntl_val |= (format << 8);
477 WREG32(gen_cntl_reg, gen_cntl_val);
478
479 crtc_offset = (u32)base;
480
481 WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, radeon_crtc->legacy_display_base_addr);
482
483 if (ASIC_IS_R300(rdev)) {
484 if (radeon_crtc->crtc_id)
485 WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0);
486 else
487 WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0);
488 }
489 WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl);
490 WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset);
491 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);
492
493 if (old_fb && old_fb != crtc->fb) {
494 radeon_fb = to_radeon_framebuffer(old_fb);
495 rbo = radeon_fb->obj->driver_private;
496 r = radeon_bo_reserve(rbo, false);
497 if (unlikely(r != 0))
498 return r;
499 radeon_bo_unpin(rbo);
500 radeon_bo_unreserve(rbo);
501 }
502
503 /* Bytes per pixel may have changed */
504 radeon_bandwidth_update(rdev);
505
506 return 0;
507 }
508
509 static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode)
510 {
511 struct drm_device *dev = crtc->dev;
512 struct radeon_device *rdev = dev->dev_private;
513 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
514 struct drm_encoder *encoder;
515 int format;
516 int hsync_start;
517 int hsync_wid;
518 int vsync_wid;
519 uint32_t crtc_h_total_disp;
520 uint32_t crtc_h_sync_strt_wid;
521 uint32_t crtc_v_total_disp;
522 uint32_t crtc_v_sync_strt_wid;
523 bool is_tv = false;
524
525 DRM_DEBUG("\n");
526 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
527 if (encoder->crtc == crtc) {
528 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
529 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
530 is_tv = true;
531 DRM_INFO("crtc %d is connected to a TV\n", radeon_crtc->crtc_id);
532 break;
533 }
534 }
535 }
536
537 switch (crtc->fb->bits_per_pixel) {
538 case 8:
539 format = 2;
540 break;
541 case 15: /* 555 */
542 format = 3;
543 break;
544 case 16: /* 565 */
545 format = 4;
546 break;
547 case 24: /* RGB */
548 format = 5;
549 break;
550 case 32: /* xRGB */
551 format = 6;
552 break;
553 default:
554 return false;
555 }
556
557 crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)
558 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));
559
560 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;
561 if (!hsync_wid)
562 hsync_wid = 1;
563 hsync_start = mode->crtc_hsync_start - 8;
564
565 crtc_h_sync_strt_wid = ((hsync_start & 0x1fff)
566 | ((hsync_wid & 0x3f) << 16)
567 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)
568 ? RADEON_CRTC_H_SYNC_POL
569 : 0));
570
571 /* This works for double scan mode. */
572 crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)
573 | ((mode->crtc_vdisplay - 1) << 16));
574
575 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;
576 if (!vsync_wid)
577 vsync_wid = 1;
578
579 crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)
580 | ((vsync_wid & 0x1f) << 16)
581 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)
582 ? RADEON_CRTC_V_SYNC_POL
583 : 0));
584
585 if (radeon_crtc->crtc_id) {
586 uint32_t crtc2_gen_cntl;
587 uint32_t disp2_merge_cntl;
588
589 /* if TV DAC is enabled for another crtc and keep it enabled */
590 crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0x00718080;
591 crtc2_gen_cntl |= ((format << 8)
592 | RADEON_CRTC2_VSYNC_DIS
593 | RADEON_CRTC2_HSYNC_DIS
594 | RADEON_CRTC2_DISP_DIS
595 | RADEON_CRTC2_DISP_REQ_EN_B
596 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
597 ? RADEON_CRTC2_DBL_SCAN_EN
598 : 0)
599 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
600 ? RADEON_CRTC2_CSYNC_EN
601 : 0)
602 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
603 ? RADEON_CRTC2_INTERLACE_EN
604 : 0));
605
606 disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);
607 disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;
608
609 WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl);
610 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);
611
612 WREG32(RADEON_FP_H2_SYNC_STRT_WID, crtc_h_sync_strt_wid);
613 WREG32(RADEON_FP_V2_SYNC_STRT_WID, crtc_v_sync_strt_wid);
614 } else {
615 uint32_t crtc_gen_cntl;
616 uint32_t crtc_ext_cntl;
617 uint32_t disp_merge_cntl;
618
619 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0x00718000;
620 crtc_gen_cntl |= (RADEON_CRTC_EXT_DISP_EN
621 | (format << 8)
622 | RADEON_CRTC_DISP_REQ_EN_B
623 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)
624 ? RADEON_CRTC_DBL_SCAN_EN
625 : 0)
626 | ((mode->flags & DRM_MODE_FLAG_CSYNC)
627 ? RADEON_CRTC_CSYNC_EN
628 : 0)
629 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)
630 ? RADEON_CRTC_INTERLACE_EN
631 : 0));
632
633 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);
634 crtc_ext_cntl |= (RADEON_XCRT_CNT_EN |
635 RADEON_CRTC_VSYNC_DIS |
636 RADEON_CRTC_HSYNC_DIS |
637 RADEON_CRTC_DISPLAY_DIS);
638
639 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);
640 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;
641
642 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);
643 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);
644 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl);
645 }
646
647 if (is_tv)
648 radeon_legacy_tv_adjust_crtc_reg(encoder, &crtc_h_total_disp,
649 &crtc_h_sync_strt_wid, &crtc_v_total_disp,
650 &crtc_v_sync_strt_wid);
651
652 WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp);
653 WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid);
654 WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp);
655 WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid);
656
657 return true;
658 }
659
660 static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
661 {
662 struct drm_device *dev = crtc->dev;
663 struct radeon_device *rdev = dev->dev_private;
664 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
665 struct drm_encoder *encoder;
666 uint32_t feedback_div = 0;
667 uint32_t frac_fb_div = 0;
668 uint32_t reference_div = 0;
669 uint32_t post_divider = 0;
670 uint32_t freq = 0;
671 uint8_t pll_gain;
672 bool use_bios_divs = false;
673 /* PLL registers */
674 uint32_t pll_ref_div = 0;
675 uint32_t pll_fb_post_div = 0;
676 uint32_t htotal_cntl = 0;
677 bool is_tv = false;
678 struct radeon_pll *pll;
679
680 struct {
681 int divider;
682 int bitvalue;
683 } *post_div, post_divs[] = {
684 /* From RAGE 128 VR/RAGE 128 GL Register
685 * Reference Manual (Technical Reference
686 * Manual P/N RRG-G04100-C Rev. 0.04), page
687 * 3-17 (PLL_DIV_[3:0]).
688 */
689 { 1, 0 }, /* VCLK_SRC */
690 { 2, 1 }, /* VCLK_SRC/2 */
691 { 4, 2 }, /* VCLK_SRC/4 */
692 { 8, 3 }, /* VCLK_SRC/8 */
693 { 3, 4 }, /* VCLK_SRC/3 */
694 { 16, 5 }, /* VCLK_SRC/16 */
695 { 6, 6 }, /* VCLK_SRC/6 */
696 { 12, 7 }, /* VCLK_SRC/12 */
697 { 0, 0 }
698 };
699
700 if (radeon_crtc->crtc_id)
701 pll = &rdev->clock.p2pll;
702 else
703 pll = &rdev->clock.p1pll;
704
705 pll->flags = RADEON_PLL_LEGACY;
706 if (radeon_new_pll == 1)
707 pll->algo = PLL_ALGO_NEW;
708 else
709 pll->algo = PLL_ALGO_LEGACY;
710
711 if (mode->clock > 200000) /* range limits??? */
712 pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
713 else
714 pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
715
716 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
717 if (encoder->crtc == crtc) {
718 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
719
720 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {
721 is_tv = true;
722 break;
723 }
724
725 if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)
726 pll->flags |= RADEON_PLL_NO_ODD_POST_DIV;
727 if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) {
728 if (!rdev->is_atom_bios) {
729 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
730 struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv;
731 if (lvds) {
732 if (lvds->use_bios_dividers) {
733 pll_ref_div = lvds->panel_ref_divider;
734 pll_fb_post_div = (lvds->panel_fb_divider |
735 (lvds->panel_post_divider << 16));
736 htotal_cntl = 0;
737 use_bios_divs = true;
738 }
739 }
740 }
741 pll->flags |= RADEON_PLL_USE_REF_DIV;
742 }
743 }
744 }
745
746 DRM_DEBUG("\n");
747
748 if (!use_bios_divs) {
749 radeon_compute_pll(pll, mode->clock,
750 &freq, &feedback_div, &frac_fb_div,
751 &reference_div, &post_divider);
752
753 for (post_div = &post_divs[0]; post_div->divider; ++post_div) {
754 if (post_div->divider == post_divider)
755 break;
756 }
757
758 if (!post_div->divider)
759 post_div = &post_divs[0];
760
761 DRM_DEBUG("dc=%u, fd=%d, rd=%d, pd=%d\n",
762 (unsigned)freq,
763 feedback_div,
764 reference_div,
765 post_divider);
766
767 pll_ref_div = reference_div;
768 #if defined(__powerpc__) && (0) /* TODO */
769 /* apparently programming this otherwise causes a hang??? */
770 if (info->MacModel == RADEON_MAC_IBOOK)
771 pll_fb_post_div = 0x000600ad;
772 else
773 #endif
774 pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16));
775
776 htotal_cntl = mode->htotal & 0x7;
777
778 }
779
780 pll_gain = radeon_compute_pll_gain(pll->reference_freq,
781 pll_ref_div & 0x3ff,
782 pll_fb_post_div & 0x7ff);
783
784 if (radeon_crtc->crtc_id) {
785 uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) &
786 ~(RADEON_PIX2CLK_SRC_SEL_MASK)) |
787 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK);
788
789 if (is_tv) {
790 radeon_legacy_tv_adjust_pll2(encoder, &htotal_cntl,
791 &pll_ref_div, &pll_fb_post_div,
792 &pixclks_cntl);
793 }
794
795 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
796 RADEON_PIX2CLK_SRC_SEL_CPUCLK,
797 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
798
799 WREG32_PLL_P(RADEON_P2PLL_CNTL,
800 RADEON_P2PLL_RESET
801 | RADEON_P2PLL_ATOMIC_UPDATE_EN
802 | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT),
803 ~(RADEON_P2PLL_RESET
804 | RADEON_P2PLL_ATOMIC_UPDATE_EN
805 | RADEON_P2PLL_PVG_MASK));
806
807 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,
808 pll_ref_div,
809 ~RADEON_P2PLL_REF_DIV_MASK);
810
811 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
812 pll_fb_post_div,
813 ~RADEON_P2PLL_FB0_DIV_MASK);
814
815 WREG32_PLL_P(RADEON_P2PLL_DIV_0,
816 pll_fb_post_div,
817 ~RADEON_P2PLL_POST0_DIV_MASK);
818
819 radeon_pll2_write_update(dev);
820 radeon_pll2_wait_for_read_update_complete(dev);
821
822 WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl);
823
824 WREG32_PLL_P(RADEON_P2PLL_CNTL,
825 0,
826 ~(RADEON_P2PLL_RESET
827 | RADEON_P2PLL_SLEEP
828 | RADEON_P2PLL_ATOMIC_UPDATE_EN));
829
830 DRM_DEBUG("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
831 (unsigned)pll_ref_div,
832 (unsigned)pll_fb_post_div,
833 (unsigned)htotal_cntl,
834 RREG32_PLL(RADEON_P2PLL_CNTL));
835 DRM_DEBUG("Wrote2: rd=%u, fd=%u, pd=%u\n",
836 (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK,
837 (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK,
838 (unsigned)((pll_fb_post_div &
839 RADEON_P2PLL_POST0_DIV_MASK) >> 16));
840
841 mdelay(50); /* Let the clock to lock */
842
843 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,
844 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,
845 ~(RADEON_PIX2CLK_SRC_SEL_MASK));
846
847 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
848 } else {
849 uint32_t pixclks_cntl;
850
851
852 if (is_tv) {
853 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);
854 radeon_legacy_tv_adjust_pll1(encoder, &htotal_cntl, &pll_ref_div,
855 &pll_fb_post_div, &pixclks_cntl);
856 }
857
858 if (rdev->flags & RADEON_IS_MOBILITY) {
859 /* A temporal workaround for the occational blanking on certain laptop panels.
860 This appears to related to the PLL divider registers (fail to lock?).
861 It occurs even when all dividers are the same with their old settings.
862 In this case we really don't need to fiddle with PLL registers.
863 By doing this we can avoid the blanking problem with some panels.
864 */
865 if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) &&
866 (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) &
867 (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) {
868 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
869 RADEON_PLL_DIV_SEL,
870 ~(RADEON_PLL_DIV_SEL));
871 r100_pll_errata_after_index(rdev);
872 return;
873 }
874 }
875
876 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
877 RADEON_VCLK_SRC_SEL_CPUCLK,
878 ~(RADEON_VCLK_SRC_SEL_MASK));
879 WREG32_PLL_P(RADEON_PPLL_CNTL,
880 RADEON_PPLL_RESET
881 | RADEON_PPLL_ATOMIC_UPDATE_EN
882 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
883 | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT),
884 ~(RADEON_PPLL_RESET
885 | RADEON_PPLL_ATOMIC_UPDATE_EN
886 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN
887 | RADEON_PPLL_PVG_MASK));
888
889 WREG32_P(RADEON_CLOCK_CNTL_INDEX,
890 RADEON_PLL_DIV_SEL,
891 ~(RADEON_PLL_DIV_SEL));
892 r100_pll_errata_after_index(rdev);
893
894 if (ASIC_IS_R300(rdev) ||
895 (rdev->family == CHIP_RS300) ||
896 (rdev->family == CHIP_RS400) ||
897 (rdev->family == CHIP_RS480)) {
898 if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
899 /* When restoring console mode, use saved PPLL_REF_DIV
900 * setting.
901 */
902 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
903 pll_ref_div,
904 0);
905 } else {
906 /* R300 uses ref_div_acc field as real ref divider */
907 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
908 (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
909 ~R300_PPLL_REF_DIV_ACC_MASK);
910 }
911 } else
912 WREG32_PLL_P(RADEON_PPLL_REF_DIV,
913 pll_ref_div,
914 ~RADEON_PPLL_REF_DIV_MASK);
915
916 WREG32_PLL_P(RADEON_PPLL_DIV_3,
917 pll_fb_post_div,
918 ~RADEON_PPLL_FB3_DIV_MASK);
919
920 WREG32_PLL_P(RADEON_PPLL_DIV_3,
921 pll_fb_post_div,
922 ~RADEON_PPLL_POST3_DIV_MASK);
923
924 radeon_pll_write_update(dev);
925 radeon_pll_wait_for_read_update_complete(dev);
926
927 WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl);
928
929 WREG32_PLL_P(RADEON_PPLL_CNTL,
930 0,
931 ~(RADEON_PPLL_RESET
932 | RADEON_PPLL_SLEEP
933 | RADEON_PPLL_ATOMIC_UPDATE_EN
934 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN));
935
936 DRM_DEBUG("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n",
937 pll_ref_div,
938 pll_fb_post_div,
939 (unsigned)htotal_cntl,
940 RREG32_PLL(RADEON_PPLL_CNTL));
941 DRM_DEBUG("Wrote: rd=%d, fd=%d, pd=%d\n",
942 pll_ref_div & RADEON_PPLL_REF_DIV_MASK,
943 pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK,
944 (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16);
945
946 mdelay(50); /* Let the clock to lock */
947
948 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,
949 RADEON_VCLK_SRC_SEL_PPLLCLK,
950 ~(RADEON_VCLK_SRC_SEL_MASK));
951
952 if (is_tv)
953 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
954 }
955 }
956
957 static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc,
958 struct drm_display_mode *mode,
959 struct drm_display_mode *adjusted_mode)
960 {
961 if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
962 return false;
963 return true;
964 }
965
966 static int radeon_crtc_mode_set(struct drm_crtc *crtc,
967 struct drm_display_mode *mode,
968 struct drm_display_mode *adjusted_mode,
969 int x, int y, struct drm_framebuffer *old_fb)
970 {
971 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
972
973 /* TODO TV */
974 radeon_crtc_set_base(crtc, x, y, old_fb);
975 radeon_set_crtc_timing(crtc, adjusted_mode);
976 radeon_set_pll(crtc, adjusted_mode);
977 radeon_overscan_setup(crtc, adjusted_mode);
978 if (radeon_crtc->crtc_id == 0) {
979 radeon_legacy_rmx_mode_set(crtc, adjusted_mode);
980 } else {
981 if (radeon_crtc->rmx_type != RMX_OFF) {
982 /* FIXME: only first crtc has rmx what should we
983 * do ?
984 */
985 DRM_ERROR("Mode need scaling but only first crtc can do that.\n");
986 }
987 }
988 return 0;
989 }
990
991 static void radeon_crtc_prepare(struct drm_crtc *crtc)
992 {
993 struct drm_device *dev = crtc->dev;
994 struct drm_crtc *crtci;
995
996 /*
997 * The hardware wedges sometimes if you reconfigure one CRTC
998 * whilst another is running (see fdo bug #24611).
999 */
1000 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
1001 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_OFF);
1002 }
1003
1004 static void radeon_crtc_commit(struct drm_crtc *crtc)
1005 {
1006 struct drm_device *dev = crtc->dev;
1007 struct drm_crtc *crtci;
1008
1009 /*
1010 * Reenable the CRTCs that should be running.
1011 */
1012 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) {
1013 if (crtci->enabled)
1014 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_ON);
1015 }
1016 }
1017
1018 static const struct drm_crtc_helper_funcs legacy_helper_funcs = {
1019 .dpms = radeon_crtc_dpms,
1020 .mode_fixup = radeon_crtc_mode_fixup,
1021 .mode_set = radeon_crtc_mode_set,
1022 .mode_set_base = radeon_crtc_set_base,
1023 .prepare = radeon_crtc_prepare,
1024 .commit = radeon_crtc_commit,
1025 .load_lut = radeon_crtc_load_lut,
1026 };
1027
1028
1029 void radeon_legacy_init_crtc(struct drm_device *dev,
1030 struct radeon_crtc *radeon_crtc)
1031 {
1032 if (radeon_crtc->crtc_id == 1)
1033 radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP;
1034 drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs);
1035 }
Linux kernel - Deliverables
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