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c52c18246ed73b842649fe3eadc002fcda4f41c8
[deliverable/linux.git] / drivers / gpu / drm / radeon / radeon_display.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/radeon_drm.h>
28 #include "radeon.h"
29
30 #include "atom.h"
31 #include <asm/div64.h>
32
33 #include <linux/pm_runtime.h>
34 #include <drm/drm_crtc_helper.h>
35 #include <drm/drm_edid.h>
36
37 #include <linux/gcd.h>
38
39 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
40 {
41 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
42 struct drm_device *dev = crtc->dev;
43 struct radeon_device *rdev = dev->dev_private;
44 int i;
45
46 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
47 WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
48
49 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
50 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
51 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
52
53 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
54 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
55 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
56
57 WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
58 WREG32(AVIVO_DC_LUT_RW_MODE, 0);
59 WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
60
61 WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
62 for (i = 0; i < 256; i++) {
63 WREG32(AVIVO_DC_LUT_30_COLOR,
64 (radeon_crtc->lut_r[i] << 20) |
65 (radeon_crtc->lut_g[i] << 10) |
66 (radeon_crtc->lut_b[i] << 0));
67 }
68
69 WREG32(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id);
70 }
71
72 static void dce4_crtc_load_lut(struct drm_crtc *crtc)
73 {
74 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
75 struct drm_device *dev = crtc->dev;
76 struct radeon_device *rdev = dev->dev_private;
77 int i;
78
79 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
80 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
81
82 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
83 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
84 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
85
86 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
87 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
88 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
89
90 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
91 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
92
93 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
94 for (i = 0; i < 256; i++) {
95 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
96 (radeon_crtc->lut_r[i] << 20) |
97 (radeon_crtc->lut_g[i] << 10) |
98 (radeon_crtc->lut_b[i] << 0));
99 }
100 }
101
102 static void dce5_crtc_load_lut(struct drm_crtc *crtc)
103 {
104 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
105 struct drm_device *dev = crtc->dev;
106 struct radeon_device *rdev = dev->dev_private;
107 int i;
108
109 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
110
111 WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
112 (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
113 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
114 WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
115 NI_GRPH_PRESCALE_BYPASS);
116 WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
117 NI_OVL_PRESCALE_BYPASS);
118 WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
119 (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
120 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
121
122 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
123
124 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
125 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
126 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
127
128 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
129 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
130 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
131
132 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
133 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
134
135 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
136 for (i = 0; i < 256; i++) {
137 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
138 (radeon_crtc->lut_r[i] << 20) |
139 (radeon_crtc->lut_g[i] << 10) |
140 (radeon_crtc->lut_b[i] << 0));
141 }
142
143 WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
144 (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
145 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
146 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
147 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
148 WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
149 (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
150 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
151 WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
152 (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
153 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
154 WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
155 (NI_OUTPUT_CSC_GRPH_MODE(NI_OUTPUT_CSC_BYPASS) |
156 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
157 /* XXX match this to the depth of the crtc fmt block, move to modeset? */
158 WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
159 if (ASIC_IS_DCE8(rdev)) {
160 /* XXX this only needs to be programmed once per crtc at startup,
161 * not sure where the best place for it is
162 */
163 WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
164 CIK_CURSOR_ALPHA_BLND_ENA);
165 }
166 }
167
168 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
169 {
170 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
171 struct drm_device *dev = crtc->dev;
172 struct radeon_device *rdev = dev->dev_private;
173 int i;
174 uint32_t dac2_cntl;
175
176 dac2_cntl = RREG32(RADEON_DAC_CNTL2);
177 if (radeon_crtc->crtc_id == 0)
178 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
179 else
180 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
181 WREG32(RADEON_DAC_CNTL2, dac2_cntl);
182
183 WREG8(RADEON_PALETTE_INDEX, 0);
184 for (i = 0; i < 256; i++) {
185 WREG32(RADEON_PALETTE_30_DATA,
186 (radeon_crtc->lut_r[i] << 20) |
187 (radeon_crtc->lut_g[i] << 10) |
188 (radeon_crtc->lut_b[i] << 0));
189 }
190 }
191
192 void radeon_crtc_load_lut(struct drm_crtc *crtc)
193 {
194 struct drm_device *dev = crtc->dev;
195 struct radeon_device *rdev = dev->dev_private;
196
197 if (!crtc->enabled)
198 return;
199
200 if (ASIC_IS_DCE5(rdev))
201 dce5_crtc_load_lut(crtc);
202 else if (ASIC_IS_DCE4(rdev))
203 dce4_crtc_load_lut(crtc);
204 else if (ASIC_IS_AVIVO(rdev))
205 avivo_crtc_load_lut(crtc);
206 else
207 legacy_crtc_load_lut(crtc);
208 }
209
210 /** Sets the color ramps on behalf of fbcon */
211 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
212 u16 blue, int regno)
213 {
214 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
215
216 radeon_crtc->lut_r[regno] = red >> 6;
217 radeon_crtc->lut_g[regno] = green >> 6;
218 radeon_crtc->lut_b[regno] = blue >> 6;
219 }
220
221 /** Gets the color ramps on behalf of fbcon */
222 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
223 u16 *blue, int regno)
224 {
225 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
226
227 *red = radeon_crtc->lut_r[regno] << 6;
228 *green = radeon_crtc->lut_g[regno] << 6;
229 *blue = radeon_crtc->lut_b[regno] << 6;
230 }
231
232 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
233 u16 *blue, uint32_t start, uint32_t size)
234 {
235 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
236 int end = (start + size > 256) ? 256 : start + size, i;
237
238 /* userspace palettes are always correct as is */
239 for (i = start; i < end; i++) {
240 radeon_crtc->lut_r[i] = red[i] >> 6;
241 radeon_crtc->lut_g[i] = green[i] >> 6;
242 radeon_crtc->lut_b[i] = blue[i] >> 6;
243 }
244 radeon_crtc_load_lut(crtc);
245 }
246
247 static void radeon_crtc_destroy(struct drm_crtc *crtc)
248 {
249 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
250
251 drm_crtc_cleanup(crtc);
252 kfree(radeon_crtc);
253 }
254
255 /*
256 * Handle unpin events outside the interrupt handler proper.
257 */
258 static void radeon_unpin_work_func(struct work_struct *__work)
259 {
260 struct radeon_unpin_work *work =
261 container_of(__work, struct radeon_unpin_work, work);
262 int r;
263
264 /* unpin of the old buffer */
265 r = radeon_bo_reserve(work->old_rbo, false);
266 if (likely(r == 0)) {
267 r = radeon_bo_unpin(work->old_rbo);
268 if (unlikely(r != 0)) {
269 DRM_ERROR("failed to unpin buffer after flip\n");
270 }
271 radeon_bo_unreserve(work->old_rbo);
272 } else
273 DRM_ERROR("failed to reserve buffer after flip\n");
274
275 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
276 kfree(work);
277 }
278
279 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
280 {
281 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
282 struct radeon_unpin_work *work;
283 unsigned long flags;
284 u32 update_pending;
285 int vpos, hpos;
286
287 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
288 work = radeon_crtc->unpin_work;
289 if (work == NULL ||
290 (work->fence && !radeon_fence_signaled(work->fence))) {
291 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
292 return;
293 }
294 /* New pageflip, or just completion of a previous one? */
295 if (!radeon_crtc->deferred_flip_completion) {
296 /* do the flip (mmio) */
297 radeon_page_flip(rdev, crtc_id, work->new_crtc_base);
298 update_pending = radeon_page_flip_pending(rdev, crtc_id);
299 } else {
300 /* This is just a completion of a flip queued in crtc
301 * at last invocation. Make sure we go directly to
302 * completion routine.
303 */
304 update_pending = 0;
305 radeon_crtc->deferred_flip_completion = 0;
306 }
307
308 /* Has the pageflip already completed in crtc, or is it certain
309 * to complete in this vblank?
310 */
311 if (update_pending &&
312 (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id, 0,
313 &vpos, &hpos, NULL, NULL)) &&
314 ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
315 (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
316 /* crtc didn't flip in this target vblank interval,
317 * but flip is pending in crtc. Based on the current
318 * scanout position we know that the current frame is
319 * (nearly) complete and the flip will (likely)
320 * complete before the start of the next frame.
321 */
322 update_pending = 0;
323 }
324 if (update_pending) {
325 /* crtc didn't flip in this target vblank interval,
326 * but flip is pending in crtc. It will complete it
327 * in next vblank interval, so complete the flip at
328 * next vblank irq.
329 */
330 radeon_crtc->deferred_flip_completion = 1;
331 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
332 return;
333 }
334
335 /* Pageflip (will be) certainly completed in this vblank. Clean up. */
336 radeon_crtc->unpin_work = NULL;
337
338 /* wakeup userspace */
339 if (work->event)
340 drm_send_vblank_event(rdev->ddev, crtc_id, work->event);
341
342 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
343
344 radeon_fence_unref(&work->fence);
345 radeon_irq_kms_pflip_irq_get(rdev, work->crtc_id);
346 schedule_work(&work->work);
347 }
348
349 static int radeon_crtc_page_flip(struct drm_crtc *crtc,
350 struct drm_framebuffer *fb,
351 struct drm_pending_vblank_event *event,
352 uint32_t page_flip_flags)
353 {
354 struct drm_device *dev = crtc->dev;
355 struct radeon_device *rdev = dev->dev_private;
356 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
357 struct radeon_framebuffer *old_radeon_fb;
358 struct radeon_framebuffer *new_radeon_fb;
359 struct drm_gem_object *obj;
360 struct radeon_bo *rbo;
361 struct radeon_unpin_work *work;
362 unsigned long flags;
363 u32 tiling_flags, pitch_pixels;
364 u64 base;
365 int r;
366
367 work = kzalloc(sizeof *work, GFP_KERNEL);
368 if (work == NULL)
369 return -ENOMEM;
370
371 work->event = event;
372 work->rdev = rdev;
373 work->crtc_id = radeon_crtc->crtc_id;
374 old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
375 new_radeon_fb = to_radeon_framebuffer(fb);
376 /* schedule unpin of the old buffer */
377 obj = old_radeon_fb->obj;
378 /* take a reference to the old object */
379 drm_gem_object_reference(obj);
380 rbo = gem_to_radeon_bo(obj);
381 work->old_rbo = rbo;
382 obj = new_radeon_fb->obj;
383 rbo = gem_to_radeon_bo(obj);
384
385 spin_lock(&rbo->tbo.bdev->fence_lock);
386 if (rbo->tbo.sync_obj)
387 work->fence = radeon_fence_ref(rbo->tbo.sync_obj);
388 spin_unlock(&rbo->tbo.bdev->fence_lock);
389
390 INIT_WORK(&work->work, radeon_unpin_work_func);
391
392 /* We borrow the event spin lock for protecting unpin_work */
393 spin_lock_irqsave(&dev->event_lock, flags);
394 if (radeon_crtc->unpin_work) {
395 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
396 r = -EBUSY;
397 goto unlock_free;
398 }
399 radeon_crtc->unpin_work = work;
400 radeon_crtc->deferred_flip_completion = 0;
401 spin_unlock_irqrestore(&dev->event_lock, flags);
402
403 /* pin the new buffer */
404 DRM_DEBUG_DRIVER("flip-ioctl() cur_fbo = %p, cur_bbo = %p\n",
405 work->old_rbo, rbo);
406
407 r = radeon_bo_reserve(rbo, false);
408 if (unlikely(r != 0)) {
409 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
410 goto pflip_cleanup;
411 }
412 /* Only 27 bit offset for legacy CRTC */
413 r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
414 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
415 if (unlikely(r != 0)) {
416 radeon_bo_unreserve(rbo);
417 r = -EINVAL;
418 DRM_ERROR("failed to pin new rbo buffer before flip\n");
419 goto pflip_cleanup;
420 }
421 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
422 radeon_bo_unreserve(rbo);
423
424 if (!ASIC_IS_AVIVO(rdev)) {
425 /* crtc offset is from display base addr not FB location */
426 base -= radeon_crtc->legacy_display_base_addr;
427 pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
428
429 if (tiling_flags & RADEON_TILING_MACRO) {
430 if (ASIC_IS_R300(rdev)) {
431 base &= ~0x7ff;
432 } else {
433 int byteshift = fb->bits_per_pixel >> 4;
434 int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11;
435 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
436 }
437 } else {
438 int offset = crtc->y * pitch_pixels + crtc->x;
439 switch (fb->bits_per_pixel) {
440 case 8:
441 default:
442 offset *= 1;
443 break;
444 case 15:
445 case 16:
446 offset *= 2;
447 break;
448 case 24:
449 offset *= 3;
450 break;
451 case 32:
452 offset *= 4;
453 break;
454 }
455 base += offset;
456 }
457 base &= ~7;
458 }
459
460 spin_lock_irqsave(&dev->event_lock, flags);
461 work->new_crtc_base = base;
462 spin_unlock_irqrestore(&dev->event_lock, flags);
463
464 /* update crtc fb */
465 crtc->primary->fb = fb;
466
467 /* set the proper interrupt */
468 radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
469
470 return 0;
471
472 pflip_cleanup:
473 spin_lock_irqsave(&dev->event_lock, flags);
474 radeon_crtc->unpin_work = NULL;
475 unlock_free:
476 spin_unlock_irqrestore(&dev->event_lock, flags);
477 drm_gem_object_unreference_unlocked(old_radeon_fb->obj);
478 radeon_fence_unref(&work->fence);
479 kfree(work);
480
481 return r;
482 }
483
484 static int
485 radeon_crtc_set_config(struct drm_mode_set *set)
486 {
487 struct drm_device *dev;
488 struct radeon_device *rdev;
489 struct drm_crtc *crtc;
490 bool active = false;
491 int ret;
492
493 if (!set || !set->crtc)
494 return -EINVAL;
495
496 dev = set->crtc->dev;
497
498 ret = pm_runtime_get_sync(dev->dev);
499 if (ret < 0)
500 return ret;
501
502 ret = drm_crtc_helper_set_config(set);
503
504 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
505 if (crtc->enabled)
506 active = true;
507
508 pm_runtime_mark_last_busy(dev->dev);
509
510 rdev = dev->dev_private;
511 /* if we have active crtcs and we don't have a power ref,
512 take the current one */
513 if (active && !rdev->have_disp_power_ref) {
514 rdev->have_disp_power_ref = true;
515 return ret;
516 }
517 /* if we have no active crtcs, then drop the power ref
518 we got before */
519 if (!active && rdev->have_disp_power_ref) {
520 pm_runtime_put_autosuspend(dev->dev);
521 rdev->have_disp_power_ref = false;
522 }
523
524 /* drop the power reference we got coming in here */
525 pm_runtime_put_autosuspend(dev->dev);
526 return ret;
527 }
528 static const struct drm_crtc_funcs radeon_crtc_funcs = {
529 .cursor_set = radeon_crtc_cursor_set,
530 .cursor_move = radeon_crtc_cursor_move,
531 .gamma_set = radeon_crtc_gamma_set,
532 .set_config = radeon_crtc_set_config,
533 .destroy = radeon_crtc_destroy,
534 .page_flip = radeon_crtc_page_flip,
535 };
536
537 static void radeon_crtc_init(struct drm_device *dev, int index)
538 {
539 struct radeon_device *rdev = dev->dev_private;
540 struct radeon_crtc *radeon_crtc;
541 int i;
542
543 radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
544 if (radeon_crtc == NULL)
545 return;
546
547 drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
548
549 drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
550 radeon_crtc->crtc_id = index;
551 rdev->mode_info.crtcs[index] = radeon_crtc;
552
553 if (rdev->family >= CHIP_BONAIRE) {
554 radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
555 radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
556 } else {
557 radeon_crtc->max_cursor_width = CURSOR_WIDTH;
558 radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
559 }
560 dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
561 dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
562
563 #if 0
564 radeon_crtc->mode_set.crtc = &radeon_crtc->base;
565 radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
566 radeon_crtc->mode_set.num_connectors = 0;
567 #endif
568
569 for (i = 0; i < 256; i++) {
570 radeon_crtc->lut_r[i] = i << 2;
571 radeon_crtc->lut_g[i] = i << 2;
572 radeon_crtc->lut_b[i] = i << 2;
573 }
574
575 if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
576 radeon_atombios_init_crtc(dev, radeon_crtc);
577 else
578 radeon_legacy_init_crtc(dev, radeon_crtc);
579 }
580
581 static const char *encoder_names[38] = {
582 "NONE",
583 "INTERNAL_LVDS",
584 "INTERNAL_TMDS1",
585 "INTERNAL_TMDS2",
586 "INTERNAL_DAC1",
587 "INTERNAL_DAC2",
588 "INTERNAL_SDVOA",
589 "INTERNAL_SDVOB",
590 "SI170B",
591 "CH7303",
592 "CH7301",
593 "INTERNAL_DVO1",
594 "EXTERNAL_SDVOA",
595 "EXTERNAL_SDVOB",
596 "TITFP513",
597 "INTERNAL_LVTM1",
598 "VT1623",
599 "HDMI_SI1930",
600 "HDMI_INTERNAL",
601 "INTERNAL_KLDSCP_TMDS1",
602 "INTERNAL_KLDSCP_DVO1",
603 "INTERNAL_KLDSCP_DAC1",
604 "INTERNAL_KLDSCP_DAC2",
605 "SI178",
606 "MVPU_FPGA",
607 "INTERNAL_DDI",
608 "VT1625",
609 "HDMI_SI1932",
610 "DP_AN9801",
611 "DP_DP501",
612 "INTERNAL_UNIPHY",
613 "INTERNAL_KLDSCP_LVTMA",
614 "INTERNAL_UNIPHY1",
615 "INTERNAL_UNIPHY2",
616 "NUTMEG",
617 "TRAVIS",
618 "INTERNAL_VCE",
619 "INTERNAL_UNIPHY3",
620 };
621
622 static const char *hpd_names[6] = {
623 "HPD1",
624 "HPD2",
625 "HPD3",
626 "HPD4",
627 "HPD5",
628 "HPD6",
629 };
630
631 static void radeon_print_display_setup(struct drm_device *dev)
632 {
633 struct drm_connector *connector;
634 struct radeon_connector *radeon_connector;
635 struct drm_encoder *encoder;
636 struct radeon_encoder *radeon_encoder;
637 uint32_t devices;
638 int i = 0;
639
640 DRM_INFO("Radeon Display Connectors\n");
641 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
642 radeon_connector = to_radeon_connector(connector);
643 DRM_INFO("Connector %d:\n", i);
644 DRM_INFO(" %s\n", drm_get_connector_name(connector));
645 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
646 DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]);
647 if (radeon_connector->ddc_bus) {
648 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
649 radeon_connector->ddc_bus->rec.mask_clk_reg,
650 radeon_connector->ddc_bus->rec.mask_data_reg,
651 radeon_connector->ddc_bus->rec.a_clk_reg,
652 radeon_connector->ddc_bus->rec.a_data_reg,
653 radeon_connector->ddc_bus->rec.en_clk_reg,
654 radeon_connector->ddc_bus->rec.en_data_reg,
655 radeon_connector->ddc_bus->rec.y_clk_reg,
656 radeon_connector->ddc_bus->rec.y_data_reg);
657 if (radeon_connector->router.ddc_valid)
658 DRM_INFO(" DDC Router 0x%x/0x%x\n",
659 radeon_connector->router.ddc_mux_control_pin,
660 radeon_connector->router.ddc_mux_state);
661 if (radeon_connector->router.cd_valid)
662 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n",
663 radeon_connector->router.cd_mux_control_pin,
664 radeon_connector->router.cd_mux_state);
665 } else {
666 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
667 connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
668 connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
669 connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
670 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
671 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
672 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
673 }
674 DRM_INFO(" Encoders:\n");
675 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
676 radeon_encoder = to_radeon_encoder(encoder);
677 devices = radeon_encoder->devices & radeon_connector->devices;
678 if (devices) {
679 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
680 DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
681 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
682 DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
683 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
684 DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
685 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
686 DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
687 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
688 DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
689 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
690 DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
691 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
692 DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
693 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
694 DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
695 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
696 DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
697 if (devices & ATOM_DEVICE_TV1_SUPPORT)
698 DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
699 if (devices & ATOM_DEVICE_CV_SUPPORT)
700 DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
701 }
702 }
703 i++;
704 }
705 }
706
707 static bool radeon_setup_enc_conn(struct drm_device *dev)
708 {
709 struct radeon_device *rdev = dev->dev_private;
710 bool ret = false;
711
712 if (rdev->bios) {
713 if (rdev->is_atom_bios) {
714 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
715 if (ret == false)
716 ret = radeon_get_atom_connector_info_from_object_table(dev);
717 } else {
718 ret = radeon_get_legacy_connector_info_from_bios(dev);
719 if (ret == false)
720 ret = radeon_get_legacy_connector_info_from_table(dev);
721 }
722 } else {
723 if (!ASIC_IS_AVIVO(rdev))
724 ret = radeon_get_legacy_connector_info_from_table(dev);
725 }
726 if (ret) {
727 radeon_setup_encoder_clones(dev);
728 radeon_print_display_setup(dev);
729 }
730
731 return ret;
732 }
733
734 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
735 {
736 struct drm_device *dev = radeon_connector->base.dev;
737 struct radeon_device *rdev = dev->dev_private;
738 int ret = 0;
739
740 /* on hw with routers, select right port */
741 if (radeon_connector->router.ddc_valid)
742 radeon_router_select_ddc_port(radeon_connector);
743
744 if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
745 ENCODER_OBJECT_ID_NONE) {
746 if (radeon_connector->ddc_bus->has_aux)
747 radeon_connector->edid = drm_get_edid(&radeon_connector->base,
748 &radeon_connector->ddc_bus->aux.ddc);
749 } else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
750 (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
751 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
752
753 if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
754 dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) &&
755 radeon_connector->ddc_bus->has_aux)
756 radeon_connector->edid = drm_get_edid(&radeon_connector->base,
757 &radeon_connector->ddc_bus->aux.ddc);
758 else if (radeon_connector->ddc_bus && !radeon_connector->edid)
759 radeon_connector->edid = drm_get_edid(&radeon_connector->base,
760 &radeon_connector->ddc_bus->adapter);
761 } else {
762 if (radeon_connector->ddc_bus && !radeon_connector->edid)
763 radeon_connector->edid = drm_get_edid(&radeon_connector->base,
764 &radeon_connector->ddc_bus->adapter);
765 }
766
767 if (!radeon_connector->edid) {
768 if (rdev->is_atom_bios) {
769 /* some laptops provide a hardcoded edid in rom for LCDs */
770 if (((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_LVDS) ||
771 (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)))
772 radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
773 } else
774 /* some servers provide a hardcoded edid in rom for KVMs */
775 radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
776 }
777 if (radeon_connector->edid) {
778 drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid);
779 ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid);
780 drm_edid_to_eld(&radeon_connector->base, radeon_connector->edid);
781 return ret;
782 }
783 drm_mode_connector_update_edid_property(&radeon_connector->base, NULL);
784 return 0;
785 }
786
787 /* avivo */
788
789 /**
790 * avivo_reduce_ratio - fractional number reduction
791 *
792 * @nom: nominator
793 * @den: denominator
794 * @nom_min: minimum value for nominator
795 * @den_min: minimum value for denominator
796 *
797 * Find the greatest common divisor and apply it on both nominator and
798 * denominator, but make nominator and denominator are at least as large
799 * as their minimum values.
800 */
801 static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
802 unsigned nom_min, unsigned den_min)
803 {
804 unsigned tmp;
805
806 /* reduce the numbers to a simpler ratio */
807 tmp = gcd(*nom, *den);
808 *nom /= tmp;
809 *den /= tmp;
810
811 /* make sure nominator is large enough */
812 if (*nom < nom_min) {
813 tmp = (nom_min + *nom - 1) / *nom;
814 *nom *= tmp;
815 *den *= tmp;
816 }
817
818 /* make sure the denominator is large enough */
819 if (*den < den_min) {
820 tmp = (den_min + *den - 1) / *den;
821 *nom *= tmp;
822 *den *= tmp;
823 }
824 }
825
826 /**
827 * avivo_get_fb_ref_div - feedback and ref divider calculation
828 *
829 * @nom: nominator
830 * @den: denominator
831 * @post_div: post divider
832 * @fb_div_max: feedback divider maximum
833 * @ref_div_max: reference divider maximum
834 * @fb_div: resulting feedback divider
835 * @ref_div: resulting reference divider
836 *
837 * Calculate feedback and reference divider for a given post divider. Makes
838 * sure we stay within the limits.
839 */
840 static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
841 unsigned fb_div_max, unsigned ref_div_max,
842 unsigned *fb_div, unsigned *ref_div)
843 {
844 /* limit reference * post divider to a maximum */
845 ref_div_max = min(210 / post_div, ref_div_max);
846
847 /* get matching reference and feedback divider */
848 *ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
849 *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
850
851 /* limit fb divider to its maximum */
852 if (*fb_div > fb_div_max) {
853 *ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
854 *fb_div = fb_div_max;
855 }
856 }
857
858 /**
859 * radeon_compute_pll_avivo - compute PLL paramaters
860 *
861 * @pll: information about the PLL
862 * @dot_clock_p: resulting pixel clock
863 * fb_div_p: resulting feedback divider
864 * frac_fb_div_p: fractional part of the feedback divider
865 * ref_div_p: resulting reference divider
866 * post_div_p: resulting reference divider
867 *
868 * Try to calculate the PLL parameters to generate the given frequency:
869 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
870 */
871 void radeon_compute_pll_avivo(struct radeon_pll *pll,
872 u32 freq,
873 u32 *dot_clock_p,
874 u32 *fb_div_p,
875 u32 *frac_fb_div_p,
876 u32 *ref_div_p,
877 u32 *post_div_p)
878 {
879 unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
880 freq : freq / 10;
881
882 unsigned fb_div_min, fb_div_max, fb_div;
883 unsigned post_div_min, post_div_max, post_div;
884 unsigned ref_div_min, ref_div_max, ref_div;
885 unsigned post_div_best, diff_best;
886 unsigned nom, den;
887
888 /* determine allowed feedback divider range */
889 fb_div_min = pll->min_feedback_div;
890 fb_div_max = pll->max_feedback_div;
891
892 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
893 fb_div_min *= 10;
894 fb_div_max *= 10;
895 }
896
897 /* determine allowed ref divider range */
898 if (pll->flags & RADEON_PLL_USE_REF_DIV)
899 ref_div_min = pll->reference_div;
900 else
901 ref_div_min = pll->min_ref_div;
902
903 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
904 pll->flags & RADEON_PLL_USE_REF_DIV)
905 ref_div_max = pll->reference_div;
906 else
907 ref_div_max = pll->max_ref_div;
908
909 /* determine allowed post divider range */
910 if (pll->flags & RADEON_PLL_USE_POST_DIV) {
911 post_div_min = pll->post_div;
912 post_div_max = pll->post_div;
913 } else {
914 unsigned vco_min, vco_max;
915
916 if (pll->flags & RADEON_PLL_IS_LCD) {
917 vco_min = pll->lcd_pll_out_min;
918 vco_max = pll->lcd_pll_out_max;
919 } else {
920 vco_min = pll->pll_out_min;
921 vco_max = pll->pll_out_max;
922 }
923
924 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
925 vco_min *= 10;
926 vco_max *= 10;
927 }
928
929 post_div_min = vco_min / target_clock;
930 if ((target_clock * post_div_min) < vco_min)
931 ++post_div_min;
932 if (post_div_min < pll->min_post_div)
933 post_div_min = pll->min_post_div;
934
935 post_div_max = vco_max / target_clock;
936 if ((target_clock * post_div_max) > vco_max)
937 --post_div_max;
938 if (post_div_max > pll->max_post_div)
939 post_div_max = pll->max_post_div;
940 }
941
942 /* represent the searched ratio as fractional number */
943 nom = target_clock;
944 den = pll->reference_freq;
945
946 /* reduce the numbers to a simpler ratio */
947 avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
948
949 /* now search for a post divider */
950 if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
951 post_div_best = post_div_min;
952 else
953 post_div_best = post_div_max;
954 diff_best = ~0;
955
956 for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
957 unsigned diff;
958 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
959 ref_div_max, &fb_div, &ref_div);
960 diff = abs(target_clock - (pll->reference_freq * fb_div) /
961 (ref_div * post_div));
962
963 if (diff < diff_best || (diff == diff_best &&
964 !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
965
966 post_div_best = post_div;
967 diff_best = diff;
968 }
969 }
970 post_div = post_div_best;
971
972 /* get the feedback and reference divider for the optimal value */
973 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
974 &fb_div, &ref_div);
975
976 /* reduce the numbers to a simpler ratio once more */
977 /* this also makes sure that the reference divider is large enough */
978 avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
979
980 /* and finally save the result */
981 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
982 *fb_div_p = fb_div / 10;
983 *frac_fb_div_p = fb_div % 10;
984 } else {
985 *fb_div_p = fb_div;
986 *frac_fb_div_p = 0;
987 }
988
989 *dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
990 (pll->reference_freq * *frac_fb_div_p)) /
991 (ref_div * post_div * 10);
992 *ref_div_p = ref_div;
993 *post_div_p = post_div;
994
995 DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
996 freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
997 ref_div, post_div);
998 }
999
1000 /* pre-avivo */
1001 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
1002 {
1003 uint64_t mod;
1004
1005 n += d / 2;
1006
1007 mod = do_div(n, d);
1008 return n;
1009 }
1010
1011 void radeon_compute_pll_legacy(struct radeon_pll *pll,
1012 uint64_t freq,
1013 uint32_t *dot_clock_p,
1014 uint32_t *fb_div_p,
1015 uint32_t *frac_fb_div_p,
1016 uint32_t *ref_div_p,
1017 uint32_t *post_div_p)
1018 {
1019 uint32_t min_ref_div = pll->min_ref_div;
1020 uint32_t max_ref_div = pll->max_ref_div;
1021 uint32_t min_post_div = pll->min_post_div;
1022 uint32_t max_post_div = pll->max_post_div;
1023 uint32_t min_fractional_feed_div = 0;
1024 uint32_t max_fractional_feed_div = 0;
1025 uint32_t best_vco = pll->best_vco;
1026 uint32_t best_post_div = 1;
1027 uint32_t best_ref_div = 1;
1028 uint32_t best_feedback_div = 1;
1029 uint32_t best_frac_feedback_div = 0;
1030 uint32_t best_freq = -1;
1031 uint32_t best_error = 0xffffffff;
1032 uint32_t best_vco_diff = 1;
1033 uint32_t post_div;
1034 u32 pll_out_min, pll_out_max;
1035
1036 DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
1037 freq = freq * 1000;
1038
1039 if (pll->flags & RADEON_PLL_IS_LCD) {
1040 pll_out_min = pll->lcd_pll_out_min;
1041 pll_out_max = pll->lcd_pll_out_max;
1042 } else {
1043 pll_out_min = pll->pll_out_min;
1044 pll_out_max = pll->pll_out_max;
1045 }
1046
1047 if (pll_out_min > 64800)
1048 pll_out_min = 64800;
1049
1050 if (pll->flags & RADEON_PLL_USE_REF_DIV)
1051 min_ref_div = max_ref_div = pll->reference_div;
1052 else {
1053 while (min_ref_div < max_ref_div-1) {
1054 uint32_t mid = (min_ref_div + max_ref_div) / 2;
1055 uint32_t pll_in = pll->reference_freq / mid;
1056 if (pll_in < pll->pll_in_min)
1057 max_ref_div = mid;
1058 else if (pll_in > pll->pll_in_max)
1059 min_ref_div = mid;
1060 else
1061 break;
1062 }
1063 }
1064
1065 if (pll->flags & RADEON_PLL_USE_POST_DIV)
1066 min_post_div = max_post_div = pll->post_div;
1067
1068 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1069 min_fractional_feed_div = pll->min_frac_feedback_div;
1070 max_fractional_feed_div = pll->max_frac_feedback_div;
1071 }
1072
1073 for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
1074 uint32_t ref_div;
1075
1076 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
1077 continue;
1078
1079 /* legacy radeons only have a few post_divs */
1080 if (pll->flags & RADEON_PLL_LEGACY) {
1081 if ((post_div == 5) ||
1082 (post_div == 7) ||
1083 (post_div == 9) ||
1084 (post_div == 10) ||
1085 (post_div == 11) ||
1086 (post_div == 13) ||
1087 (post_div == 14) ||
1088 (post_div == 15))
1089 continue;
1090 }
1091
1092 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
1093 uint32_t feedback_div, current_freq = 0, error, vco_diff;
1094 uint32_t pll_in = pll->reference_freq / ref_div;
1095 uint32_t min_feed_div = pll->min_feedback_div;
1096 uint32_t max_feed_div = pll->max_feedback_div + 1;
1097
1098 if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
1099 continue;
1100
1101 while (min_feed_div < max_feed_div) {
1102 uint32_t vco;
1103 uint32_t min_frac_feed_div = min_fractional_feed_div;
1104 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
1105 uint32_t frac_feedback_div;
1106 uint64_t tmp;
1107
1108 feedback_div = (min_feed_div + max_feed_div) / 2;
1109
1110 tmp = (uint64_t)pll->reference_freq * feedback_div;
1111 vco = radeon_div(tmp, ref_div);
1112
1113 if (vco < pll_out_min) {
1114 min_feed_div = feedback_div + 1;
1115 continue;
1116 } else if (vco > pll_out_max) {
1117 max_feed_div = feedback_div;
1118 continue;
1119 }
1120
1121 while (min_frac_feed_div < max_frac_feed_div) {
1122 frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
1123 tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
1124 tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
1125 current_freq = radeon_div(tmp, ref_div * post_div);
1126
1127 if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
1128 if (freq < current_freq)
1129 error = 0xffffffff;
1130 else
1131 error = freq - current_freq;
1132 } else
1133 error = abs(current_freq - freq);
1134 vco_diff = abs(vco - best_vco);
1135
1136 if ((best_vco == 0 && error < best_error) ||
1137 (best_vco != 0 &&
1138 ((best_error > 100 && error < best_error - 100) ||
1139 (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1140 best_post_div = post_div;
1141 best_ref_div = ref_div;
1142 best_feedback_div = feedback_div;
1143 best_frac_feedback_div = frac_feedback_div;
1144 best_freq = current_freq;
1145 best_error = error;
1146 best_vco_diff = vco_diff;
1147 } else if (current_freq == freq) {
1148 if (best_freq == -1) {
1149 best_post_div = post_div;
1150 best_ref_div = ref_div;
1151 best_feedback_div = feedback_div;
1152 best_frac_feedback_div = frac_feedback_div;
1153 best_freq = current_freq;
1154 best_error = error;
1155 best_vco_diff = vco_diff;
1156 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1157 ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1158 ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1159 ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1160 ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1161 ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1162 best_post_div = post_div;
1163 best_ref_div = ref_div;
1164 best_feedback_div = feedback_div;
1165 best_frac_feedback_div = frac_feedback_div;
1166 best_freq = current_freq;
1167 best_error = error;
1168 best_vco_diff = vco_diff;
1169 }
1170 }
1171 if (current_freq < freq)
1172 min_frac_feed_div = frac_feedback_div + 1;
1173 else
1174 max_frac_feed_div = frac_feedback_div;
1175 }
1176 if (current_freq < freq)
1177 min_feed_div = feedback_div + 1;
1178 else
1179 max_feed_div = feedback_div;
1180 }
1181 }
1182 }
1183
1184 *dot_clock_p = best_freq / 10000;
1185 *fb_div_p = best_feedback_div;
1186 *frac_fb_div_p = best_frac_feedback_div;
1187 *ref_div_p = best_ref_div;
1188 *post_div_p = best_post_div;
1189 DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1190 (long long)freq,
1191 best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1192 best_ref_div, best_post_div);
1193
1194 }
1195
1196 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
1197 {
1198 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1199
1200 if (radeon_fb->obj) {
1201 drm_gem_object_unreference_unlocked(radeon_fb->obj);
1202 }
1203 drm_framebuffer_cleanup(fb);
1204 kfree(radeon_fb);
1205 }
1206
1207 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
1208 struct drm_file *file_priv,
1209 unsigned int *handle)
1210 {
1211 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1212
1213 return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
1214 }
1215
1216 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1217 .destroy = radeon_user_framebuffer_destroy,
1218 .create_handle = radeon_user_framebuffer_create_handle,
1219 };
1220
1221 int
1222 radeon_framebuffer_init(struct drm_device *dev,
1223 struct radeon_framebuffer *rfb,
1224 struct drm_mode_fb_cmd2 *mode_cmd,
1225 struct drm_gem_object *obj)
1226 {
1227 int ret;
1228 rfb->obj = obj;
1229 drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
1230 ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
1231 if (ret) {
1232 rfb->obj = NULL;
1233 return ret;
1234 }
1235 return 0;
1236 }
1237
1238 static struct drm_framebuffer *
1239 radeon_user_framebuffer_create(struct drm_device *dev,
1240 struct drm_file *file_priv,
1241 struct drm_mode_fb_cmd2 *mode_cmd)
1242 {
1243 struct drm_gem_object *obj;
1244 struct radeon_framebuffer *radeon_fb;
1245 int ret;
1246
1247 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1248 if (obj == NULL) {
1249 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
1250 "can't create framebuffer\n", mode_cmd->handles[0]);
1251 return ERR_PTR(-ENOENT);
1252 }
1253
1254 radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
1255 if (radeon_fb == NULL) {
1256 drm_gem_object_unreference_unlocked(obj);
1257 return ERR_PTR(-ENOMEM);
1258 }
1259
1260 ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
1261 if (ret) {
1262 kfree(radeon_fb);
1263 drm_gem_object_unreference_unlocked(obj);
1264 return ERR_PTR(ret);
1265 }
1266
1267 return &radeon_fb->base;
1268 }
1269
1270 static void radeon_output_poll_changed(struct drm_device *dev)
1271 {
1272 struct radeon_device *rdev = dev->dev_private;
1273 radeon_fb_output_poll_changed(rdev);
1274 }
1275
1276 static const struct drm_mode_config_funcs radeon_mode_funcs = {
1277 .fb_create = radeon_user_framebuffer_create,
1278 .output_poll_changed = radeon_output_poll_changed
1279 };
1280
1281 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1282 { { 0, "driver" },
1283 { 1, "bios" },
1284 };
1285
1286 static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1287 { { TV_STD_NTSC, "ntsc" },
1288 { TV_STD_PAL, "pal" },
1289 { TV_STD_PAL_M, "pal-m" },
1290 { TV_STD_PAL_60, "pal-60" },
1291 { TV_STD_NTSC_J, "ntsc-j" },
1292 { TV_STD_SCART_PAL, "scart-pal" },
1293 { TV_STD_PAL_CN, "pal-cn" },
1294 { TV_STD_SECAM, "secam" },
1295 };
1296
1297 static struct drm_prop_enum_list radeon_underscan_enum_list[] =
1298 { { UNDERSCAN_OFF, "off" },
1299 { UNDERSCAN_ON, "on" },
1300 { UNDERSCAN_AUTO, "auto" },
1301 };
1302
1303 static struct drm_prop_enum_list radeon_audio_enum_list[] =
1304 { { RADEON_AUDIO_DISABLE, "off" },
1305 { RADEON_AUDIO_ENABLE, "on" },
1306 { RADEON_AUDIO_AUTO, "auto" },
1307 };
1308
1309 /* XXX support different dither options? spatial, temporal, both, etc. */
1310 static struct drm_prop_enum_list radeon_dither_enum_list[] =
1311 { { RADEON_FMT_DITHER_DISABLE, "off" },
1312 { RADEON_FMT_DITHER_ENABLE, "on" },
1313 };
1314
1315 static int radeon_modeset_create_props(struct radeon_device *rdev)
1316 {
1317 int sz;
1318
1319 if (rdev->is_atom_bios) {
1320 rdev->mode_info.coherent_mode_property =
1321 drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1322 if (!rdev->mode_info.coherent_mode_property)
1323 return -ENOMEM;
1324 }
1325
1326 if (!ASIC_IS_AVIVO(rdev)) {
1327 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
1328 rdev->mode_info.tmds_pll_property =
1329 drm_property_create_enum(rdev->ddev, 0,
1330 "tmds_pll",
1331 radeon_tmds_pll_enum_list, sz);
1332 }
1333
1334 rdev->mode_info.load_detect_property =
1335 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1336 if (!rdev->mode_info.load_detect_property)
1337 return -ENOMEM;
1338
1339 drm_mode_create_scaling_mode_property(rdev->ddev);
1340
1341 sz = ARRAY_SIZE(radeon_tv_std_enum_list);
1342 rdev->mode_info.tv_std_property =
1343 drm_property_create_enum(rdev->ddev, 0,
1344 "tv standard",
1345 radeon_tv_std_enum_list, sz);
1346
1347 sz = ARRAY_SIZE(radeon_underscan_enum_list);
1348 rdev->mode_info.underscan_property =
1349 drm_property_create_enum(rdev->ddev, 0,
1350 "underscan",
1351 radeon_underscan_enum_list, sz);
1352
1353 rdev->mode_info.underscan_hborder_property =
1354 drm_property_create_range(rdev->ddev, 0,
1355 "underscan hborder", 0, 128);
1356 if (!rdev->mode_info.underscan_hborder_property)
1357 return -ENOMEM;
1358
1359 rdev->mode_info.underscan_vborder_property =
1360 drm_property_create_range(rdev->ddev, 0,
1361 "underscan vborder", 0, 128);
1362 if (!rdev->mode_info.underscan_vborder_property)
1363 return -ENOMEM;
1364
1365 sz = ARRAY_SIZE(radeon_audio_enum_list);
1366 rdev->mode_info.audio_property =
1367 drm_property_create_enum(rdev->ddev, 0,
1368 "audio",
1369 radeon_audio_enum_list, sz);
1370
1371 sz = ARRAY_SIZE(radeon_dither_enum_list);
1372 rdev->mode_info.dither_property =
1373 drm_property_create_enum(rdev->ddev, 0,
1374 "dither",
1375 radeon_dither_enum_list, sz);
1376
1377 return 0;
1378 }
1379
1380 void radeon_update_display_priority(struct radeon_device *rdev)
1381 {
1382 /* adjustment options for the display watermarks */
1383 if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1384 /* set display priority to high for r3xx, rv515 chips
1385 * this avoids flickering due to underflow to the
1386 * display controllers during heavy acceleration.
1387 * Don't force high on rs4xx igp chips as it seems to
1388 * affect the sound card. See kernel bug 15982.
1389 */
1390 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1391 !(rdev->flags & RADEON_IS_IGP))
1392 rdev->disp_priority = 2;
1393 else
1394 rdev->disp_priority = 0;
1395 } else
1396 rdev->disp_priority = radeon_disp_priority;
1397
1398 }
1399
1400 /*
1401 * Allocate hdmi structs and determine register offsets
1402 */
1403 static void radeon_afmt_init(struct radeon_device *rdev)
1404 {
1405 int i;
1406
1407 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1408 rdev->mode_info.afmt[i] = NULL;
1409
1410 if (ASIC_IS_NODCE(rdev)) {
1411 /* nothing to do */
1412 } else if (ASIC_IS_DCE4(rdev)) {
1413 static uint32_t eg_offsets[] = {
1414 EVERGREEN_CRTC0_REGISTER_OFFSET,
1415 EVERGREEN_CRTC1_REGISTER_OFFSET,
1416 EVERGREEN_CRTC2_REGISTER_OFFSET,
1417 EVERGREEN_CRTC3_REGISTER_OFFSET,
1418 EVERGREEN_CRTC4_REGISTER_OFFSET,
1419 EVERGREEN_CRTC5_REGISTER_OFFSET,
1420 0x13830 - 0x7030,
1421 };
1422 int num_afmt;
1423
1424 /* DCE8 has 7 audio blocks tied to DIG encoders */
1425 /* DCE6 has 6 audio blocks tied to DIG encoders */
1426 /* DCE4/5 has 6 audio blocks tied to DIG encoders */
1427 /* DCE4.1 has 2 audio blocks tied to DIG encoders */
1428 if (ASIC_IS_DCE8(rdev))
1429 num_afmt = 7;
1430 else if (ASIC_IS_DCE6(rdev))
1431 num_afmt = 6;
1432 else if (ASIC_IS_DCE5(rdev))
1433 num_afmt = 6;
1434 else if (ASIC_IS_DCE41(rdev))
1435 num_afmt = 2;
1436 else /* DCE4 */
1437 num_afmt = 6;
1438
1439 BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
1440 for (i = 0; i < num_afmt; i++) {
1441 rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1442 if (rdev->mode_info.afmt[i]) {
1443 rdev->mode_info.afmt[i]->offset = eg_offsets[i];
1444 rdev->mode_info.afmt[i]->id = i;
1445 }
1446 }
1447 } else if (ASIC_IS_DCE3(rdev)) {
1448 /* DCE3.x has 2 audio blocks tied to DIG encoders */
1449 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1450 if (rdev->mode_info.afmt[0]) {
1451 rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1452 rdev->mode_info.afmt[0]->id = 0;
1453 }
1454 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1455 if (rdev->mode_info.afmt[1]) {
1456 rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1457 rdev->mode_info.afmt[1]->id = 1;
1458 }
1459 } else if (ASIC_IS_DCE2(rdev)) {
1460 /* DCE2 has at least 1 routable audio block */
1461 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1462 if (rdev->mode_info.afmt[0]) {
1463 rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1464 rdev->mode_info.afmt[0]->id = 0;
1465 }
1466 /* r6xx has 2 routable audio blocks */
1467 if (rdev->family >= CHIP_R600) {
1468 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1469 if (rdev->mode_info.afmt[1]) {
1470 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1471 rdev->mode_info.afmt[1]->id = 1;
1472 }
1473 }
1474 }
1475 }
1476
1477 static void radeon_afmt_fini(struct radeon_device *rdev)
1478 {
1479 int i;
1480
1481 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1482 kfree(rdev->mode_info.afmt[i]);
1483 rdev->mode_info.afmt[i] = NULL;
1484 }
1485 }
1486
1487 int radeon_modeset_init(struct radeon_device *rdev)
1488 {
1489 int i;
1490 int ret;
1491
1492 drm_mode_config_init(rdev->ddev);
1493 rdev->mode_info.mode_config_initialized = true;
1494
1495 rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1496
1497 if (ASIC_IS_DCE5(rdev)) {
1498 rdev->ddev->mode_config.max_width = 16384;
1499 rdev->ddev->mode_config.max_height = 16384;
1500 } else if (ASIC_IS_AVIVO(rdev)) {
1501 rdev->ddev->mode_config.max_width = 8192;
1502 rdev->ddev->mode_config.max_height = 8192;
1503 } else {
1504 rdev->ddev->mode_config.max_width = 4096;
1505 rdev->ddev->mode_config.max_height = 4096;
1506 }
1507
1508 rdev->ddev->mode_config.preferred_depth = 24;
1509 rdev->ddev->mode_config.prefer_shadow = 1;
1510
1511 rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1512
1513 ret = radeon_modeset_create_props(rdev);
1514 if (ret) {
1515 return ret;
1516 }
1517
1518 /* init i2c buses */
1519 radeon_i2c_init(rdev);
1520
1521 /* check combios for a valid hardcoded EDID - Sun servers */
1522 if (!rdev->is_atom_bios) {
1523 /* check for hardcoded EDID in BIOS */
1524 radeon_combios_check_hardcoded_edid(rdev);
1525 }
1526
1527 /* allocate crtcs */
1528 for (i = 0; i < rdev->num_crtc; i++) {
1529 radeon_crtc_init(rdev->ddev, i);
1530 }
1531
1532 /* okay we should have all the bios connectors */
1533 ret = radeon_setup_enc_conn(rdev->ddev);
1534 if (!ret) {
1535 return ret;
1536 }
1537
1538 /* init dig PHYs, disp eng pll */
1539 if (rdev->is_atom_bios) {
1540 radeon_atom_encoder_init(rdev);
1541 radeon_atom_disp_eng_pll_init(rdev);
1542 }
1543
1544 /* initialize hpd */
1545 radeon_hpd_init(rdev);
1546
1547 /* setup afmt */
1548 radeon_afmt_init(rdev);
1549
1550 radeon_fbdev_init(rdev);
1551 drm_kms_helper_poll_init(rdev->ddev);
1552
1553 if (rdev->pm.dpm_enabled) {
1554 /* do dpm late init */
1555 ret = radeon_pm_late_init(rdev);
1556 if (ret) {
1557 rdev->pm.dpm_enabled = false;
1558 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1559 }
1560 /* set the dpm state for PX since there won't be
1561 * a modeset to call this.
1562 */
1563 radeon_pm_compute_clocks(rdev);
1564 }
1565
1566 return 0;
1567 }
1568
1569 void radeon_modeset_fini(struct radeon_device *rdev)
1570 {
1571 radeon_fbdev_fini(rdev);
1572 kfree(rdev->mode_info.bios_hardcoded_edid);
1573
1574 if (rdev->mode_info.mode_config_initialized) {
1575 radeon_afmt_fini(rdev);
1576 drm_kms_helper_poll_fini(rdev->ddev);
1577 radeon_hpd_fini(rdev);
1578 drm_mode_config_cleanup(rdev->ddev);
1579 rdev->mode_info.mode_config_initialized = false;
1580 }
1581 /* free i2c buses */
1582 radeon_i2c_fini(rdev);
1583 }
1584
1585 static bool is_hdtv_mode(const struct drm_display_mode *mode)
1586 {
1587 /* try and guess if this is a tv or a monitor */
1588 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1589 (mode->vdisplay == 576) || /* 576p */
1590 (mode->vdisplay == 720) || /* 720p */
1591 (mode->vdisplay == 1080)) /* 1080p */
1592 return true;
1593 else
1594 return false;
1595 }
1596
1597 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1598 const struct drm_display_mode *mode,
1599 struct drm_display_mode *adjusted_mode)
1600 {
1601 struct drm_device *dev = crtc->dev;
1602 struct radeon_device *rdev = dev->dev_private;
1603 struct drm_encoder *encoder;
1604 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1605 struct radeon_encoder *radeon_encoder;
1606 struct drm_connector *connector;
1607 struct radeon_connector *radeon_connector;
1608 bool first = true;
1609 u32 src_v = 1, dst_v = 1;
1610 u32 src_h = 1, dst_h = 1;
1611
1612 radeon_crtc->h_border = 0;
1613 radeon_crtc->v_border = 0;
1614
1615 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1616 if (encoder->crtc != crtc)
1617 continue;
1618 radeon_encoder = to_radeon_encoder(encoder);
1619 connector = radeon_get_connector_for_encoder(encoder);
1620 radeon_connector = to_radeon_connector(connector);
1621
1622 if (first) {
1623 /* set scaling */
1624 if (radeon_encoder->rmx_type == RMX_OFF)
1625 radeon_crtc->rmx_type = RMX_OFF;
1626 else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1627 mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1628 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1629 else
1630 radeon_crtc->rmx_type = RMX_OFF;
1631 /* copy native mode */
1632 memcpy(&radeon_crtc->native_mode,
1633 &radeon_encoder->native_mode,
1634 sizeof(struct drm_display_mode));
1635 src_v = crtc->mode.vdisplay;
1636 dst_v = radeon_crtc->native_mode.vdisplay;
1637 src_h = crtc->mode.hdisplay;
1638 dst_h = radeon_crtc->native_mode.hdisplay;
1639
1640 /* fix up for overscan on hdmi */
1641 if (ASIC_IS_AVIVO(rdev) &&
1642 (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1643 ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1644 ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1645 drm_detect_hdmi_monitor(radeon_connector->edid) &&
1646 is_hdtv_mode(mode)))) {
1647 if (radeon_encoder->underscan_hborder != 0)
1648 radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1649 else
1650 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1651 if (radeon_encoder->underscan_vborder != 0)
1652 radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1653 else
1654 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1655 radeon_crtc->rmx_type = RMX_FULL;
1656 src_v = crtc->mode.vdisplay;
1657 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1658 src_h = crtc->mode.hdisplay;
1659 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1660 }
1661 first = false;
1662 } else {
1663 if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1664 /* WARNING: Right now this can't happen but
1665 * in the future we need to check that scaling
1666 * are consistent across different encoder
1667 * (ie all encoder can work with the same
1668 * scaling).
1669 */
1670 DRM_ERROR("Scaling not consistent across encoder.\n");
1671 return false;
1672 }
1673 }
1674 }
1675 if (radeon_crtc->rmx_type != RMX_OFF) {
1676 fixed20_12 a, b;
1677 a.full = dfixed_const(src_v);
1678 b.full = dfixed_const(dst_v);
1679 radeon_crtc->vsc.full = dfixed_div(a, b);
1680 a.full = dfixed_const(src_h);
1681 b.full = dfixed_const(dst_h);
1682 radeon_crtc->hsc.full = dfixed_div(a, b);
1683 } else {
1684 radeon_crtc->vsc.full = dfixed_const(1);
1685 radeon_crtc->hsc.full = dfixed_const(1);
1686 }
1687 return true;
1688 }
1689
1690 /*
1691 * Retrieve current video scanout position of crtc on a given gpu, and
1692 * an optional accurate timestamp of when query happened.
1693 *
1694 * \param dev Device to query.
1695 * \param crtc Crtc to query.
1696 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
1697 * \param *vpos Location where vertical scanout position should be stored.
1698 * \param *hpos Location where horizontal scanout position should go.
1699 * \param *stime Target location for timestamp taken immediately before
1700 * scanout position query. Can be NULL to skip timestamp.
1701 * \param *etime Target location for timestamp taken immediately after
1702 * scanout position query. Can be NULL to skip timestamp.
1703 *
1704 * Returns vpos as a positive number while in active scanout area.
1705 * Returns vpos as a negative number inside vblank, counting the number
1706 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1707 * until start of active scanout / end of vblank."
1708 *
1709 * \return Flags, or'ed together as follows:
1710 *
1711 * DRM_SCANOUTPOS_VALID = Query successful.
1712 * DRM_SCANOUTPOS_INVBL = Inside vblank.
1713 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1714 * this flag means that returned position may be offset by a constant but
1715 * unknown small number of scanlines wrt. real scanout position.
1716 *
1717 */
1718 int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags,
1719 int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
1720 {
1721 u32 stat_crtc = 0, vbl = 0, position = 0;
1722 int vbl_start, vbl_end, vtotal, ret = 0;
1723 bool in_vbl = true;
1724
1725 struct radeon_device *rdev = dev->dev_private;
1726
1727 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
1728
1729 /* Get optional system timestamp before query. */
1730 if (stime)
1731 *stime = ktime_get();
1732
1733 if (ASIC_IS_DCE4(rdev)) {
1734 if (crtc == 0) {
1735 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1736 EVERGREEN_CRTC0_REGISTER_OFFSET);
1737 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1738 EVERGREEN_CRTC0_REGISTER_OFFSET);
1739 ret |= DRM_SCANOUTPOS_VALID;
1740 }
1741 if (crtc == 1) {
1742 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1743 EVERGREEN_CRTC1_REGISTER_OFFSET);
1744 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1745 EVERGREEN_CRTC1_REGISTER_OFFSET);
1746 ret |= DRM_SCANOUTPOS_VALID;
1747 }
1748 if (crtc == 2) {
1749 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1750 EVERGREEN_CRTC2_REGISTER_OFFSET);
1751 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1752 EVERGREEN_CRTC2_REGISTER_OFFSET);
1753 ret |= DRM_SCANOUTPOS_VALID;
1754 }
1755 if (crtc == 3) {
1756 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1757 EVERGREEN_CRTC3_REGISTER_OFFSET);
1758 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1759 EVERGREEN_CRTC3_REGISTER_OFFSET);
1760 ret |= DRM_SCANOUTPOS_VALID;
1761 }
1762 if (crtc == 4) {
1763 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1764 EVERGREEN_CRTC4_REGISTER_OFFSET);
1765 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1766 EVERGREEN_CRTC4_REGISTER_OFFSET);
1767 ret |= DRM_SCANOUTPOS_VALID;
1768 }
1769 if (crtc == 5) {
1770 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1771 EVERGREEN_CRTC5_REGISTER_OFFSET);
1772 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1773 EVERGREEN_CRTC5_REGISTER_OFFSET);
1774 ret |= DRM_SCANOUTPOS_VALID;
1775 }
1776 } else if (ASIC_IS_AVIVO(rdev)) {
1777 if (crtc == 0) {
1778 vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1779 position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1780 ret |= DRM_SCANOUTPOS_VALID;
1781 }
1782 if (crtc == 1) {
1783 vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1784 position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1785 ret |= DRM_SCANOUTPOS_VALID;
1786 }
1787 } else {
1788 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1789 if (crtc == 0) {
1790 /* Assume vbl_end == 0, get vbl_start from
1791 * upper 16 bits.
1792 */
1793 vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1794 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1795 /* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1796 position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1797 stat_crtc = RREG32(RADEON_CRTC_STATUS);
1798 if (!(stat_crtc & 1))
1799 in_vbl = false;
1800
1801 ret |= DRM_SCANOUTPOS_VALID;
1802 }
1803 if (crtc == 1) {
1804 vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1805 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1806 position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1807 stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1808 if (!(stat_crtc & 1))
1809 in_vbl = false;
1810
1811 ret |= DRM_SCANOUTPOS_VALID;
1812 }
1813 }
1814
1815 /* Get optional system timestamp after query. */
1816 if (etime)
1817 *etime = ktime_get();
1818
1819 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
1820
1821 /* Decode into vertical and horizontal scanout position. */
1822 *vpos = position & 0x1fff;
1823 *hpos = (position >> 16) & 0x1fff;
1824
1825 /* Valid vblank area boundaries from gpu retrieved? */
1826 if (vbl > 0) {
1827 /* Yes: Decode. */
1828 ret |= DRM_SCANOUTPOS_ACCURATE;
1829 vbl_start = vbl & 0x1fff;
1830 vbl_end = (vbl >> 16) & 0x1fff;
1831 }
1832 else {
1833 /* No: Fake something reasonable which gives at least ok results. */
1834 vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
1835 vbl_end = 0;
1836 }
1837
1838 /* Test scanout position against vblank region. */
1839 if ((*vpos < vbl_start) && (*vpos >= vbl_end))
1840 in_vbl = false;
1841
1842 /* Check if inside vblank area and apply corrective offsets:
1843 * vpos will then be >=0 in video scanout area, but negative
1844 * within vblank area, counting down the number of lines until
1845 * start of scanout.
1846 */
1847
1848 /* Inside "upper part" of vblank area? Apply corrective offset if so: */
1849 if (in_vbl && (*vpos >= vbl_start)) {
1850 vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
1851 *vpos = *vpos - vtotal;
1852 }
1853
1854 /* Correct for shifted end of vbl at vbl_end. */
1855 *vpos = *vpos - vbl_end;
1856
1857 /* In vblank? */
1858 if (in_vbl)
1859 ret |= DRM_SCANOUTPOS_INVBL;
1860
1861 /* Is vpos outside nominal vblank area, but less than
1862 * 1/100 of a frame height away from start of vblank?
1863 * If so, assume this isn't a massively delayed vblank
1864 * interrupt, but a vblank interrupt that fired a few
1865 * microseconds before true start of vblank. Compensate
1866 * by adding a full frame duration to the final timestamp.
1867 * Happens, e.g., on ATI R500, R600.
1868 *
1869 * We only do this if DRM_CALLED_FROM_VBLIRQ.
1870 */
1871 if ((flags & DRM_CALLED_FROM_VBLIRQ) && !in_vbl) {
1872 vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
1873 vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
1874
1875 if (vbl_start - *vpos < vtotal / 100) {
1876 *vpos -= vtotal;
1877
1878 /* Signal this correction as "applied". */
1879 ret |= 0x8;
1880 }
1881 }
1882
1883 return ret;
1884 }
Linux kernel - Deliverables
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