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[mirror_ubuntu-artful-kernel.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_plane_helper.h>
36 #include <drm/drm_edid.h>
37
38 #include <linux/gcd.h>
39
40 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
41 {
42 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
43 struct drm_device *dev = crtc->dev;
44 struct radeon_device *rdev = dev->dev_private;
45 int i;
46
47 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
48 WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
49
50 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
51 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
52 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
53
54 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
55 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
56 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
57
58 WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
59 WREG32(AVIVO_DC_LUT_RW_MODE, 0);
60 WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
61
62 WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
63 for (i = 0; i < 256; i++) {
64 WREG32(AVIVO_DC_LUT_30_COLOR,
65 (radeon_crtc->lut_r[i] << 20) |
66 (radeon_crtc->lut_g[i] << 10) |
67 (radeon_crtc->lut_b[i] << 0));
68 }
69
70 /* Only change bit 0 of LUT_SEL, other bits are set elsewhere */
71 WREG32_P(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id, ~1);
72 }
73
74 static void dce4_crtc_load_lut(struct drm_crtc *crtc)
75 {
76 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
77 struct drm_device *dev = crtc->dev;
78 struct radeon_device *rdev = dev->dev_private;
79 int i;
80
81 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
82 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
83
84 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
85 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
86 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
87
88 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
89 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
90 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
91
92 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
93 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
94
95 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
96 for (i = 0; i < 256; i++) {
97 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
98 (radeon_crtc->lut_r[i] << 20) |
99 (radeon_crtc->lut_g[i] << 10) |
100 (radeon_crtc->lut_b[i] << 0));
101 }
102 }
103
104 static void dce5_crtc_load_lut(struct drm_crtc *crtc)
105 {
106 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
107 struct drm_device *dev = crtc->dev;
108 struct radeon_device *rdev = dev->dev_private;
109 int i;
110
111 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
112
113 WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
114 (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
115 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
116 WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
117 NI_GRPH_PRESCALE_BYPASS);
118 WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
119 NI_OVL_PRESCALE_BYPASS);
120 WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
121 (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
122 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
123
124 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
125
126 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
127 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
128 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
129
130 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
131 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
132 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
133
134 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
135 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
136
137 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
138 for (i = 0; i < 256; i++) {
139 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
140 (radeon_crtc->lut_r[i] << 20) |
141 (radeon_crtc->lut_g[i] << 10) |
142 (radeon_crtc->lut_b[i] << 0));
143 }
144
145 WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
146 (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
147 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
148 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
149 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
150 WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
151 (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
152 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
153 WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
154 (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
155 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
156 WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
157 (NI_OUTPUT_CSC_GRPH_MODE(radeon_crtc->output_csc) |
158 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
159 /* XXX match this to the depth of the crtc fmt block, move to modeset? */
160 WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
161 if (ASIC_IS_DCE8(rdev)) {
162 /* XXX this only needs to be programmed once per crtc at startup,
163 * not sure where the best place for it is
164 */
165 WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
166 CIK_CURSOR_ALPHA_BLND_ENA);
167 }
168 }
169
170 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
171 {
172 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
173 struct drm_device *dev = crtc->dev;
174 struct radeon_device *rdev = dev->dev_private;
175 int i;
176 uint32_t dac2_cntl;
177
178 dac2_cntl = RREG32(RADEON_DAC_CNTL2);
179 if (radeon_crtc->crtc_id == 0)
180 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
181 else
182 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
183 WREG32(RADEON_DAC_CNTL2, dac2_cntl);
184
185 WREG8(RADEON_PALETTE_INDEX, 0);
186 for (i = 0; i < 256; i++) {
187 WREG32(RADEON_PALETTE_30_DATA,
188 (radeon_crtc->lut_r[i] << 20) |
189 (radeon_crtc->lut_g[i] << 10) |
190 (radeon_crtc->lut_b[i] << 0));
191 }
192 }
193
194 void radeon_crtc_load_lut(struct drm_crtc *crtc)
195 {
196 struct drm_device *dev = crtc->dev;
197 struct radeon_device *rdev = dev->dev_private;
198
199 if (!crtc->enabled)
200 return;
201
202 if (ASIC_IS_DCE5(rdev))
203 dce5_crtc_load_lut(crtc);
204 else if (ASIC_IS_DCE4(rdev))
205 dce4_crtc_load_lut(crtc);
206 else if (ASIC_IS_AVIVO(rdev))
207 avivo_crtc_load_lut(crtc);
208 else
209 legacy_crtc_load_lut(crtc);
210 }
211
212 /** Sets the color ramps on behalf of fbcon */
213 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
214 u16 blue, int regno)
215 {
216 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
217
218 radeon_crtc->lut_r[regno] = red >> 6;
219 radeon_crtc->lut_g[regno] = green >> 6;
220 radeon_crtc->lut_b[regno] = blue >> 6;
221 }
222
223 /** Gets the color ramps on behalf of fbcon */
224 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
225 u16 *blue, int regno)
226 {
227 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
228
229 *red = radeon_crtc->lut_r[regno] << 6;
230 *green = radeon_crtc->lut_g[regno] << 6;
231 *blue = radeon_crtc->lut_b[regno] << 6;
232 }
233
234 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
235 u16 *blue, uint32_t start, uint32_t size)
236 {
237 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
238 int end = (start + size > 256) ? 256 : start + size, i;
239
240 /* userspace palettes are always correct as is */
241 for (i = start; i < end; i++) {
242 radeon_crtc->lut_r[i] = red[i] >> 6;
243 radeon_crtc->lut_g[i] = green[i] >> 6;
244 radeon_crtc->lut_b[i] = blue[i] >> 6;
245 }
246 radeon_crtc_load_lut(crtc);
247 }
248
249 static void radeon_crtc_destroy(struct drm_crtc *crtc)
250 {
251 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
252
253 drm_crtc_cleanup(crtc);
254 destroy_workqueue(radeon_crtc->flip_queue);
255 kfree(radeon_crtc);
256 }
257
258 /**
259 * radeon_unpin_work_func - unpin old buffer object
260 *
261 * @__work - kernel work item
262 *
263 * Unpin the old frame buffer object outside of the interrupt handler
264 */
265 static void radeon_unpin_work_func(struct work_struct *__work)
266 {
267 struct radeon_flip_work *work =
268 container_of(__work, struct radeon_flip_work, unpin_work);
269 int r;
270
271 /* unpin of the old buffer */
272 r = radeon_bo_reserve(work->old_rbo, false);
273 if (likely(r == 0)) {
274 r = radeon_bo_unpin(work->old_rbo);
275 if (unlikely(r != 0)) {
276 DRM_ERROR("failed to unpin buffer after flip\n");
277 }
278 radeon_bo_unreserve(work->old_rbo);
279 } else
280 DRM_ERROR("failed to reserve buffer after flip\n");
281
282 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
283 kfree(work);
284 }
285
286 void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
287 {
288 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
289 unsigned long flags;
290 u32 update_pending;
291 int vpos, hpos;
292
293 /* can happen during initialization */
294 if (radeon_crtc == NULL)
295 return;
296
297 /* Skip the pageflip completion check below (based on polling) on
298 * asics which reliably support hw pageflip completion irqs. pflip
299 * irqs are a reliable and race-free method of handling pageflip
300 * completion detection. A use_pflipirq module parameter < 2 allows
301 * to override this in case of asics with faulty pflip irqs.
302 * A module parameter of 0 would only use this polling based path,
303 * a parameter of 1 would use pflip irq only as a backup to this
304 * path, as in Linux 3.16.
305 */
306 if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
307 return;
308
309 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
310 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
311 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
312 "RADEON_FLIP_SUBMITTED(%d)\n",
313 radeon_crtc->flip_status,
314 RADEON_FLIP_SUBMITTED);
315 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
316 return;
317 }
318
319 update_pending = radeon_page_flip_pending(rdev, crtc_id);
320
321 /* Has the pageflip already completed in crtc, or is it certain
322 * to complete in this vblank?
323 */
324 if (update_pending &&
325 (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id, 0,
326 &vpos, &hpos, NULL, NULL,
327 &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) &&
328 ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
329 (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
330 /* crtc didn't flip in this target vblank interval,
331 * but flip is pending in crtc. Based on the current
332 * scanout position we know that the current frame is
333 * (nearly) complete and the flip will (likely)
334 * complete before the start of the next frame.
335 */
336 update_pending = 0;
337 }
338 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
339 if (!update_pending)
340 radeon_crtc_handle_flip(rdev, crtc_id);
341 }
342
343 /**
344 * radeon_crtc_handle_flip - page flip completed
345 *
346 * @rdev: radeon device pointer
347 * @crtc_id: crtc number this event is for
348 *
349 * Called when we are sure that a page flip for this crtc is completed.
350 */
351 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
352 {
353 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
354 struct radeon_flip_work *work;
355 unsigned long flags;
356
357 /* this can happen at init */
358 if (radeon_crtc == NULL)
359 return;
360
361 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
362 work = radeon_crtc->flip_work;
363 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
364 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
365 "RADEON_FLIP_SUBMITTED(%d)\n",
366 radeon_crtc->flip_status,
367 RADEON_FLIP_SUBMITTED);
368 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
369 return;
370 }
371
372 /* Pageflip completed. Clean up. */
373 radeon_crtc->flip_status = RADEON_FLIP_NONE;
374 radeon_crtc->flip_work = NULL;
375
376 /* wakeup userspace */
377 if (work->event)
378 drm_send_vblank_event(rdev->ddev, crtc_id, work->event);
379
380 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
381
382 drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
383 radeon_irq_kms_pflip_irq_put(rdev, work->crtc_id);
384 queue_work(radeon_crtc->flip_queue, &work->unpin_work);
385 }
386
387 /**
388 * radeon_flip_work_func - page flip framebuffer
389 *
390 * @work - kernel work item
391 *
392 * Wait for the buffer object to become idle and do the actual page flip
393 */
394 static void radeon_flip_work_func(struct work_struct *__work)
395 {
396 struct radeon_flip_work *work =
397 container_of(__work, struct radeon_flip_work, flip_work);
398 struct radeon_device *rdev = work->rdev;
399 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
400
401 struct drm_crtc *crtc = &radeon_crtc->base;
402 unsigned long flags;
403 int r;
404
405 down_read(&rdev->exclusive_lock);
406 if (work->fence) {
407 struct radeon_fence *fence;
408
409 fence = to_radeon_fence(work->fence);
410 if (fence && fence->rdev == rdev) {
411 r = radeon_fence_wait(fence, false);
412 if (r == -EDEADLK) {
413 up_read(&rdev->exclusive_lock);
414 do {
415 r = radeon_gpu_reset(rdev);
416 } while (r == -EAGAIN);
417 down_read(&rdev->exclusive_lock);
418 }
419 } else
420 r = fence_wait(work->fence, false);
421
422 if (r)
423 DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
424
425 /* We continue with the page flip even if we failed to wait on
426 * the fence, otherwise the DRM core and userspace will be
427 * confused about which BO the CRTC is scanning out
428 */
429
430 fence_put(work->fence);
431 work->fence = NULL;
432 }
433
434 /* We borrow the event spin lock for protecting flip_status */
435 spin_lock_irqsave(&crtc->dev->event_lock, flags);
436
437 /* set the proper interrupt */
438 radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
439
440 /* do the flip (mmio) */
441 radeon_page_flip(rdev, radeon_crtc->crtc_id, work->base);
442
443 radeon_crtc->flip_status = RADEON_FLIP_SUBMITTED;
444 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
445 up_read(&rdev->exclusive_lock);
446 }
447
448 static int radeon_crtc_page_flip(struct drm_crtc *crtc,
449 struct drm_framebuffer *fb,
450 struct drm_pending_vblank_event *event,
451 uint32_t page_flip_flags)
452 {
453 struct drm_device *dev = crtc->dev;
454 struct radeon_device *rdev = dev->dev_private;
455 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
456 struct radeon_framebuffer *old_radeon_fb;
457 struct radeon_framebuffer *new_radeon_fb;
458 struct drm_gem_object *obj;
459 struct radeon_flip_work *work;
460 struct radeon_bo *new_rbo;
461 uint32_t tiling_flags, pitch_pixels;
462 uint64_t base;
463 unsigned long flags;
464 int r;
465
466 work = kzalloc(sizeof *work, GFP_KERNEL);
467 if (work == NULL)
468 return -ENOMEM;
469
470 INIT_WORK(&work->flip_work, radeon_flip_work_func);
471 INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
472
473 work->rdev = rdev;
474 work->crtc_id = radeon_crtc->crtc_id;
475 work->event = event;
476
477 /* schedule unpin of the old buffer */
478 old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
479 obj = old_radeon_fb->obj;
480
481 /* take a reference to the old object */
482 drm_gem_object_reference(obj);
483 work->old_rbo = gem_to_radeon_bo(obj);
484
485 new_radeon_fb = to_radeon_framebuffer(fb);
486 obj = new_radeon_fb->obj;
487 new_rbo = gem_to_radeon_bo(obj);
488
489 /* pin the new buffer */
490 DRM_DEBUG_DRIVER("flip-ioctl() cur_rbo = %p, new_rbo = %p\n",
491 work->old_rbo, new_rbo);
492
493 r = radeon_bo_reserve(new_rbo, false);
494 if (unlikely(r != 0)) {
495 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
496 goto cleanup;
497 }
498 /* Only 27 bit offset for legacy CRTC */
499 r = radeon_bo_pin_restricted(new_rbo, RADEON_GEM_DOMAIN_VRAM,
500 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
501 if (unlikely(r != 0)) {
502 radeon_bo_unreserve(new_rbo);
503 r = -EINVAL;
504 DRM_ERROR("failed to pin new rbo buffer before flip\n");
505 goto cleanup;
506 }
507 work->fence = fence_get(reservation_object_get_excl(new_rbo->tbo.resv));
508 radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
509 radeon_bo_unreserve(new_rbo);
510
511 if (!ASIC_IS_AVIVO(rdev)) {
512 /* crtc offset is from display base addr not FB location */
513 base -= radeon_crtc->legacy_display_base_addr;
514 pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
515
516 if (tiling_flags & RADEON_TILING_MACRO) {
517 if (ASIC_IS_R300(rdev)) {
518 base &= ~0x7ff;
519 } else {
520 int byteshift = fb->bits_per_pixel >> 4;
521 int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11;
522 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
523 }
524 } else {
525 int offset = crtc->y * pitch_pixels + crtc->x;
526 switch (fb->bits_per_pixel) {
527 case 8:
528 default:
529 offset *= 1;
530 break;
531 case 15:
532 case 16:
533 offset *= 2;
534 break;
535 case 24:
536 offset *= 3;
537 break;
538 case 32:
539 offset *= 4;
540 break;
541 }
542 base += offset;
543 }
544 base &= ~7;
545 }
546 work->base = base;
547
548 r = drm_vblank_get(crtc->dev, radeon_crtc->crtc_id);
549 if (r) {
550 DRM_ERROR("failed to get vblank before flip\n");
551 goto pflip_cleanup;
552 }
553
554 /* We borrow the event spin lock for protecting flip_work */
555 spin_lock_irqsave(&crtc->dev->event_lock, flags);
556
557 if (radeon_crtc->flip_status != RADEON_FLIP_NONE) {
558 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
559 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
560 r = -EBUSY;
561 goto vblank_cleanup;
562 }
563 radeon_crtc->flip_status = RADEON_FLIP_PENDING;
564 radeon_crtc->flip_work = work;
565
566 /* update crtc fb */
567 crtc->primary->fb = fb;
568
569 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
570
571 queue_work(radeon_crtc->flip_queue, &work->flip_work);
572 return 0;
573
574 vblank_cleanup:
575 drm_vblank_put(crtc->dev, radeon_crtc->crtc_id);
576
577 pflip_cleanup:
578 if (unlikely(radeon_bo_reserve(new_rbo, false) != 0)) {
579 DRM_ERROR("failed to reserve new rbo in error path\n");
580 goto cleanup;
581 }
582 if (unlikely(radeon_bo_unpin(new_rbo) != 0)) {
583 DRM_ERROR("failed to unpin new rbo in error path\n");
584 }
585 radeon_bo_unreserve(new_rbo);
586
587 cleanup:
588 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
589 fence_put(work->fence);
590 kfree(work);
591 return r;
592 }
593
594 static int
595 radeon_crtc_set_config(struct drm_mode_set *set)
596 {
597 struct drm_device *dev;
598 struct radeon_device *rdev;
599 struct drm_crtc *crtc;
600 bool active = false;
601 int ret;
602
603 if (!set || !set->crtc)
604 return -EINVAL;
605
606 dev = set->crtc->dev;
607
608 ret = pm_runtime_get_sync(dev->dev);
609 if (ret < 0)
610 return ret;
611
612 ret = drm_crtc_helper_set_config(set);
613
614 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
615 if (crtc->enabled)
616 active = true;
617
618 pm_runtime_mark_last_busy(dev->dev);
619
620 rdev = dev->dev_private;
621 /* if we have active crtcs and we don't have a power ref,
622 take the current one */
623 if (active && !rdev->have_disp_power_ref) {
624 rdev->have_disp_power_ref = true;
625 return ret;
626 }
627 /* if we have no active crtcs, then drop the power ref
628 we got before */
629 if (!active && rdev->have_disp_power_ref) {
630 pm_runtime_put_autosuspend(dev->dev);
631 rdev->have_disp_power_ref = false;
632 }
633
634 /* drop the power reference we got coming in here */
635 pm_runtime_put_autosuspend(dev->dev);
636 return ret;
637 }
638 static const struct drm_crtc_funcs radeon_crtc_funcs = {
639 .cursor_set2 = radeon_crtc_cursor_set2,
640 .cursor_move = radeon_crtc_cursor_move,
641 .gamma_set = radeon_crtc_gamma_set,
642 .set_config = radeon_crtc_set_config,
643 .destroy = radeon_crtc_destroy,
644 .page_flip = radeon_crtc_page_flip,
645 };
646
647 static void radeon_crtc_init(struct drm_device *dev, int index)
648 {
649 struct radeon_device *rdev = dev->dev_private;
650 struct radeon_crtc *radeon_crtc;
651 int i;
652
653 radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
654 if (radeon_crtc == NULL)
655 return;
656
657 drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
658
659 drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
660 radeon_crtc->crtc_id = index;
661 radeon_crtc->flip_queue = create_singlethread_workqueue("radeon-crtc");
662 rdev->mode_info.crtcs[index] = radeon_crtc;
663
664 if (rdev->family >= CHIP_BONAIRE) {
665 radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
666 radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
667 } else {
668 radeon_crtc->max_cursor_width = CURSOR_WIDTH;
669 radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
670 }
671 dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
672 dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
673
674 #if 0
675 radeon_crtc->mode_set.crtc = &radeon_crtc->base;
676 radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
677 radeon_crtc->mode_set.num_connectors = 0;
678 #endif
679
680 for (i = 0; i < 256; i++) {
681 radeon_crtc->lut_r[i] = i << 2;
682 radeon_crtc->lut_g[i] = i << 2;
683 radeon_crtc->lut_b[i] = i << 2;
684 }
685
686 if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
687 radeon_atombios_init_crtc(dev, radeon_crtc);
688 else
689 radeon_legacy_init_crtc(dev, radeon_crtc);
690 }
691
692 static const char *encoder_names[38] = {
693 "NONE",
694 "INTERNAL_LVDS",
695 "INTERNAL_TMDS1",
696 "INTERNAL_TMDS2",
697 "INTERNAL_DAC1",
698 "INTERNAL_DAC2",
699 "INTERNAL_SDVOA",
700 "INTERNAL_SDVOB",
701 "SI170B",
702 "CH7303",
703 "CH7301",
704 "INTERNAL_DVO1",
705 "EXTERNAL_SDVOA",
706 "EXTERNAL_SDVOB",
707 "TITFP513",
708 "INTERNAL_LVTM1",
709 "VT1623",
710 "HDMI_SI1930",
711 "HDMI_INTERNAL",
712 "INTERNAL_KLDSCP_TMDS1",
713 "INTERNAL_KLDSCP_DVO1",
714 "INTERNAL_KLDSCP_DAC1",
715 "INTERNAL_KLDSCP_DAC2",
716 "SI178",
717 "MVPU_FPGA",
718 "INTERNAL_DDI",
719 "VT1625",
720 "HDMI_SI1932",
721 "DP_AN9801",
722 "DP_DP501",
723 "INTERNAL_UNIPHY",
724 "INTERNAL_KLDSCP_LVTMA",
725 "INTERNAL_UNIPHY1",
726 "INTERNAL_UNIPHY2",
727 "NUTMEG",
728 "TRAVIS",
729 "INTERNAL_VCE",
730 "INTERNAL_UNIPHY3",
731 };
732
733 static const char *hpd_names[6] = {
734 "HPD1",
735 "HPD2",
736 "HPD3",
737 "HPD4",
738 "HPD5",
739 "HPD6",
740 };
741
742 static void radeon_print_display_setup(struct drm_device *dev)
743 {
744 struct drm_connector *connector;
745 struct radeon_connector *radeon_connector;
746 struct drm_encoder *encoder;
747 struct radeon_encoder *radeon_encoder;
748 uint32_t devices;
749 int i = 0;
750
751 DRM_INFO("Radeon Display Connectors\n");
752 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
753 radeon_connector = to_radeon_connector(connector);
754 DRM_INFO("Connector %d:\n", i);
755 DRM_INFO(" %s\n", connector->name);
756 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
757 DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]);
758 if (radeon_connector->ddc_bus) {
759 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
760 radeon_connector->ddc_bus->rec.mask_clk_reg,
761 radeon_connector->ddc_bus->rec.mask_data_reg,
762 radeon_connector->ddc_bus->rec.a_clk_reg,
763 radeon_connector->ddc_bus->rec.a_data_reg,
764 radeon_connector->ddc_bus->rec.en_clk_reg,
765 radeon_connector->ddc_bus->rec.en_data_reg,
766 radeon_connector->ddc_bus->rec.y_clk_reg,
767 radeon_connector->ddc_bus->rec.y_data_reg);
768 if (radeon_connector->router.ddc_valid)
769 DRM_INFO(" DDC Router 0x%x/0x%x\n",
770 radeon_connector->router.ddc_mux_control_pin,
771 radeon_connector->router.ddc_mux_state);
772 if (radeon_connector->router.cd_valid)
773 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n",
774 radeon_connector->router.cd_mux_control_pin,
775 radeon_connector->router.cd_mux_state);
776 } else {
777 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
778 connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
779 connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
780 connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
781 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
782 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
783 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
784 }
785 DRM_INFO(" Encoders:\n");
786 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
787 radeon_encoder = to_radeon_encoder(encoder);
788 devices = radeon_encoder->devices & radeon_connector->devices;
789 if (devices) {
790 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
791 DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
792 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
793 DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
794 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
795 DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
796 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
797 DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
798 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
799 DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
800 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
801 DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
802 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
803 DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
804 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
805 DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
806 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
807 DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
808 if (devices & ATOM_DEVICE_TV1_SUPPORT)
809 DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
810 if (devices & ATOM_DEVICE_CV_SUPPORT)
811 DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
812 }
813 }
814 i++;
815 }
816 }
817
818 static bool radeon_setup_enc_conn(struct drm_device *dev)
819 {
820 struct radeon_device *rdev = dev->dev_private;
821 bool ret = false;
822
823 if (rdev->bios) {
824 if (rdev->is_atom_bios) {
825 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
826 if (ret == false)
827 ret = radeon_get_atom_connector_info_from_object_table(dev);
828 } else {
829 ret = radeon_get_legacy_connector_info_from_bios(dev);
830 if (ret == false)
831 ret = radeon_get_legacy_connector_info_from_table(dev);
832 }
833 } else {
834 if (!ASIC_IS_AVIVO(rdev))
835 ret = radeon_get_legacy_connector_info_from_table(dev);
836 }
837 if (ret) {
838 radeon_setup_encoder_clones(dev);
839 radeon_print_display_setup(dev);
840 }
841
842 return ret;
843 }
844
845 /* avivo */
846
847 /**
848 * avivo_reduce_ratio - fractional number reduction
849 *
850 * @nom: nominator
851 * @den: denominator
852 * @nom_min: minimum value for nominator
853 * @den_min: minimum value for denominator
854 *
855 * Find the greatest common divisor and apply it on both nominator and
856 * denominator, but make nominator and denominator are at least as large
857 * as their minimum values.
858 */
859 static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
860 unsigned nom_min, unsigned den_min)
861 {
862 unsigned tmp;
863
864 /* reduce the numbers to a simpler ratio */
865 tmp = gcd(*nom, *den);
866 *nom /= tmp;
867 *den /= tmp;
868
869 /* make sure nominator is large enough */
870 if (*nom < nom_min) {
871 tmp = DIV_ROUND_UP(nom_min, *nom);
872 *nom *= tmp;
873 *den *= tmp;
874 }
875
876 /* make sure the denominator is large enough */
877 if (*den < den_min) {
878 tmp = DIV_ROUND_UP(den_min, *den);
879 *nom *= tmp;
880 *den *= tmp;
881 }
882 }
883
884 /**
885 * avivo_get_fb_ref_div - feedback and ref divider calculation
886 *
887 * @nom: nominator
888 * @den: denominator
889 * @post_div: post divider
890 * @fb_div_max: feedback divider maximum
891 * @ref_div_max: reference divider maximum
892 * @fb_div: resulting feedback divider
893 * @ref_div: resulting reference divider
894 *
895 * Calculate feedback and reference divider for a given post divider. Makes
896 * sure we stay within the limits.
897 */
898 static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
899 unsigned fb_div_max, unsigned ref_div_max,
900 unsigned *fb_div, unsigned *ref_div)
901 {
902 /* limit reference * post divider to a maximum */
903 ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
904
905 /* get matching reference and feedback divider */
906 *ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
907 *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
908
909 /* limit fb divider to its maximum */
910 if (*fb_div > fb_div_max) {
911 *ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
912 *fb_div = fb_div_max;
913 }
914 }
915
916 /**
917 * radeon_compute_pll_avivo - compute PLL paramaters
918 *
919 * @pll: information about the PLL
920 * @dot_clock_p: resulting pixel clock
921 * fb_div_p: resulting feedback divider
922 * frac_fb_div_p: fractional part of the feedback divider
923 * ref_div_p: resulting reference divider
924 * post_div_p: resulting reference divider
925 *
926 * Try to calculate the PLL parameters to generate the given frequency:
927 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
928 */
929 void radeon_compute_pll_avivo(struct radeon_pll *pll,
930 u32 freq,
931 u32 *dot_clock_p,
932 u32 *fb_div_p,
933 u32 *frac_fb_div_p,
934 u32 *ref_div_p,
935 u32 *post_div_p)
936 {
937 unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
938 freq : freq / 10;
939
940 unsigned fb_div_min, fb_div_max, fb_div;
941 unsigned post_div_min, post_div_max, post_div;
942 unsigned ref_div_min, ref_div_max, ref_div;
943 unsigned post_div_best, diff_best;
944 unsigned nom, den;
945
946 /* determine allowed feedback divider range */
947 fb_div_min = pll->min_feedback_div;
948 fb_div_max = pll->max_feedback_div;
949
950 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
951 fb_div_min *= 10;
952 fb_div_max *= 10;
953 }
954
955 /* determine allowed ref divider range */
956 if (pll->flags & RADEON_PLL_USE_REF_DIV)
957 ref_div_min = pll->reference_div;
958 else
959 ref_div_min = pll->min_ref_div;
960
961 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
962 pll->flags & RADEON_PLL_USE_REF_DIV)
963 ref_div_max = pll->reference_div;
964 else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
965 /* fix for problems on RS880 */
966 ref_div_max = min(pll->max_ref_div, 7u);
967 else
968 ref_div_max = pll->max_ref_div;
969
970 /* determine allowed post divider range */
971 if (pll->flags & RADEON_PLL_USE_POST_DIV) {
972 post_div_min = pll->post_div;
973 post_div_max = pll->post_div;
974 } else {
975 unsigned vco_min, vco_max;
976
977 if (pll->flags & RADEON_PLL_IS_LCD) {
978 vco_min = pll->lcd_pll_out_min;
979 vco_max = pll->lcd_pll_out_max;
980 } else {
981 vco_min = pll->pll_out_min;
982 vco_max = pll->pll_out_max;
983 }
984
985 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
986 vco_min *= 10;
987 vco_max *= 10;
988 }
989
990 post_div_min = vco_min / target_clock;
991 if ((target_clock * post_div_min) < vco_min)
992 ++post_div_min;
993 if (post_div_min < pll->min_post_div)
994 post_div_min = pll->min_post_div;
995
996 post_div_max = vco_max / target_clock;
997 if ((target_clock * post_div_max) > vco_max)
998 --post_div_max;
999 if (post_div_max > pll->max_post_div)
1000 post_div_max = pll->max_post_div;
1001 }
1002
1003 /* represent the searched ratio as fractional number */
1004 nom = target_clock;
1005 den = pll->reference_freq;
1006
1007 /* reduce the numbers to a simpler ratio */
1008 avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
1009
1010 /* now search for a post divider */
1011 if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1012 post_div_best = post_div_min;
1013 else
1014 post_div_best = post_div_max;
1015 diff_best = ~0;
1016
1017 for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
1018 unsigned diff;
1019 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
1020 ref_div_max, &fb_div, &ref_div);
1021 diff = abs(target_clock - (pll->reference_freq * fb_div) /
1022 (ref_div * post_div));
1023
1024 if (diff < diff_best || (diff == diff_best &&
1025 !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
1026
1027 post_div_best = post_div;
1028 diff_best = diff;
1029 }
1030 }
1031 post_div = post_div_best;
1032
1033 /* get the feedback and reference divider for the optimal value */
1034 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
1035 &fb_div, &ref_div);
1036
1037 /* reduce the numbers to a simpler ratio once more */
1038 /* this also makes sure that the reference divider is large enough */
1039 avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
1040
1041 /* avoid high jitter with small fractional dividers */
1042 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && (fb_div % 10)) {
1043 fb_div_min = max(fb_div_min, (9 - (fb_div % 10)) * 20 + 50);
1044 if (fb_div < fb_div_min) {
1045 unsigned tmp = DIV_ROUND_UP(fb_div_min, fb_div);
1046 fb_div *= tmp;
1047 ref_div *= tmp;
1048 }
1049 }
1050
1051 /* and finally save the result */
1052 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1053 *fb_div_p = fb_div / 10;
1054 *frac_fb_div_p = fb_div % 10;
1055 } else {
1056 *fb_div_p = fb_div;
1057 *frac_fb_div_p = 0;
1058 }
1059
1060 *dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
1061 (pll->reference_freq * *frac_fb_div_p)) /
1062 (ref_div * post_div * 10);
1063 *ref_div_p = ref_div;
1064 *post_div_p = post_div;
1065
1066 DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1067 freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
1068 ref_div, post_div);
1069 }
1070
1071 /* pre-avivo */
1072 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
1073 {
1074 uint64_t mod;
1075
1076 n += d / 2;
1077
1078 mod = do_div(n, d);
1079 return n;
1080 }
1081
1082 void radeon_compute_pll_legacy(struct radeon_pll *pll,
1083 uint64_t freq,
1084 uint32_t *dot_clock_p,
1085 uint32_t *fb_div_p,
1086 uint32_t *frac_fb_div_p,
1087 uint32_t *ref_div_p,
1088 uint32_t *post_div_p)
1089 {
1090 uint32_t min_ref_div = pll->min_ref_div;
1091 uint32_t max_ref_div = pll->max_ref_div;
1092 uint32_t min_post_div = pll->min_post_div;
1093 uint32_t max_post_div = pll->max_post_div;
1094 uint32_t min_fractional_feed_div = 0;
1095 uint32_t max_fractional_feed_div = 0;
1096 uint32_t best_vco = pll->best_vco;
1097 uint32_t best_post_div = 1;
1098 uint32_t best_ref_div = 1;
1099 uint32_t best_feedback_div = 1;
1100 uint32_t best_frac_feedback_div = 0;
1101 uint32_t best_freq = -1;
1102 uint32_t best_error = 0xffffffff;
1103 uint32_t best_vco_diff = 1;
1104 uint32_t post_div;
1105 u32 pll_out_min, pll_out_max;
1106
1107 DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
1108 freq = freq * 1000;
1109
1110 if (pll->flags & RADEON_PLL_IS_LCD) {
1111 pll_out_min = pll->lcd_pll_out_min;
1112 pll_out_max = pll->lcd_pll_out_max;
1113 } else {
1114 pll_out_min = pll->pll_out_min;
1115 pll_out_max = pll->pll_out_max;
1116 }
1117
1118 if (pll_out_min > 64800)
1119 pll_out_min = 64800;
1120
1121 if (pll->flags & RADEON_PLL_USE_REF_DIV)
1122 min_ref_div = max_ref_div = pll->reference_div;
1123 else {
1124 while (min_ref_div < max_ref_div-1) {
1125 uint32_t mid = (min_ref_div + max_ref_div) / 2;
1126 uint32_t pll_in = pll->reference_freq / mid;
1127 if (pll_in < pll->pll_in_min)
1128 max_ref_div = mid;
1129 else if (pll_in > pll->pll_in_max)
1130 min_ref_div = mid;
1131 else
1132 break;
1133 }
1134 }
1135
1136 if (pll->flags & RADEON_PLL_USE_POST_DIV)
1137 min_post_div = max_post_div = pll->post_div;
1138
1139 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1140 min_fractional_feed_div = pll->min_frac_feedback_div;
1141 max_fractional_feed_div = pll->max_frac_feedback_div;
1142 }
1143
1144 for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
1145 uint32_t ref_div;
1146
1147 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
1148 continue;
1149
1150 /* legacy radeons only have a few post_divs */
1151 if (pll->flags & RADEON_PLL_LEGACY) {
1152 if ((post_div == 5) ||
1153 (post_div == 7) ||
1154 (post_div == 9) ||
1155 (post_div == 10) ||
1156 (post_div == 11) ||
1157 (post_div == 13) ||
1158 (post_div == 14) ||
1159 (post_div == 15))
1160 continue;
1161 }
1162
1163 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
1164 uint32_t feedback_div, current_freq = 0, error, vco_diff;
1165 uint32_t pll_in = pll->reference_freq / ref_div;
1166 uint32_t min_feed_div = pll->min_feedback_div;
1167 uint32_t max_feed_div = pll->max_feedback_div + 1;
1168
1169 if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
1170 continue;
1171
1172 while (min_feed_div < max_feed_div) {
1173 uint32_t vco;
1174 uint32_t min_frac_feed_div = min_fractional_feed_div;
1175 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
1176 uint32_t frac_feedback_div;
1177 uint64_t tmp;
1178
1179 feedback_div = (min_feed_div + max_feed_div) / 2;
1180
1181 tmp = (uint64_t)pll->reference_freq * feedback_div;
1182 vco = radeon_div(tmp, ref_div);
1183
1184 if (vco < pll_out_min) {
1185 min_feed_div = feedback_div + 1;
1186 continue;
1187 } else if (vco > pll_out_max) {
1188 max_feed_div = feedback_div;
1189 continue;
1190 }
1191
1192 while (min_frac_feed_div < max_frac_feed_div) {
1193 frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
1194 tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
1195 tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
1196 current_freq = radeon_div(tmp, ref_div * post_div);
1197
1198 if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
1199 if (freq < current_freq)
1200 error = 0xffffffff;
1201 else
1202 error = freq - current_freq;
1203 } else
1204 error = abs(current_freq - freq);
1205 vco_diff = abs(vco - best_vco);
1206
1207 if ((best_vco == 0 && error < best_error) ||
1208 (best_vco != 0 &&
1209 ((best_error > 100 && error < best_error - 100) ||
1210 (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1211 best_post_div = post_div;
1212 best_ref_div = ref_div;
1213 best_feedback_div = feedback_div;
1214 best_frac_feedback_div = frac_feedback_div;
1215 best_freq = current_freq;
1216 best_error = error;
1217 best_vco_diff = vco_diff;
1218 } else if (current_freq == freq) {
1219 if (best_freq == -1) {
1220 best_post_div = post_div;
1221 best_ref_div = ref_div;
1222 best_feedback_div = feedback_div;
1223 best_frac_feedback_div = frac_feedback_div;
1224 best_freq = current_freq;
1225 best_error = error;
1226 best_vco_diff = vco_diff;
1227 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1228 ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1229 ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1230 ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1231 ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1232 ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1233 best_post_div = post_div;
1234 best_ref_div = ref_div;
1235 best_feedback_div = feedback_div;
1236 best_frac_feedback_div = frac_feedback_div;
1237 best_freq = current_freq;
1238 best_error = error;
1239 best_vco_diff = vco_diff;
1240 }
1241 }
1242 if (current_freq < freq)
1243 min_frac_feed_div = frac_feedback_div + 1;
1244 else
1245 max_frac_feed_div = frac_feedback_div;
1246 }
1247 if (current_freq < freq)
1248 min_feed_div = feedback_div + 1;
1249 else
1250 max_feed_div = feedback_div;
1251 }
1252 }
1253 }
1254
1255 *dot_clock_p = best_freq / 10000;
1256 *fb_div_p = best_feedback_div;
1257 *frac_fb_div_p = best_frac_feedback_div;
1258 *ref_div_p = best_ref_div;
1259 *post_div_p = best_post_div;
1260 DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1261 (long long)freq,
1262 best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1263 best_ref_div, best_post_div);
1264
1265 }
1266
1267 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
1268 {
1269 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1270
1271 if (radeon_fb->obj) {
1272 drm_gem_object_unreference_unlocked(radeon_fb->obj);
1273 }
1274 drm_framebuffer_cleanup(fb);
1275 kfree(radeon_fb);
1276 }
1277
1278 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
1279 struct drm_file *file_priv,
1280 unsigned int *handle)
1281 {
1282 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1283
1284 return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
1285 }
1286
1287 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1288 .destroy = radeon_user_framebuffer_destroy,
1289 .create_handle = radeon_user_framebuffer_create_handle,
1290 };
1291
1292 int
1293 radeon_framebuffer_init(struct drm_device *dev,
1294 struct radeon_framebuffer *rfb,
1295 struct drm_mode_fb_cmd2 *mode_cmd,
1296 struct drm_gem_object *obj)
1297 {
1298 int ret;
1299 rfb->obj = obj;
1300 drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
1301 ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
1302 if (ret) {
1303 rfb->obj = NULL;
1304 return ret;
1305 }
1306 return 0;
1307 }
1308
1309 static struct drm_framebuffer *
1310 radeon_user_framebuffer_create(struct drm_device *dev,
1311 struct drm_file *file_priv,
1312 struct drm_mode_fb_cmd2 *mode_cmd)
1313 {
1314 struct drm_gem_object *obj;
1315 struct radeon_framebuffer *radeon_fb;
1316 int ret;
1317
1318 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1319 if (obj == NULL) {
1320 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
1321 "can't create framebuffer\n", mode_cmd->handles[0]);
1322 return ERR_PTR(-ENOENT);
1323 }
1324
1325 radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
1326 if (radeon_fb == NULL) {
1327 drm_gem_object_unreference_unlocked(obj);
1328 return ERR_PTR(-ENOMEM);
1329 }
1330
1331 ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
1332 if (ret) {
1333 kfree(radeon_fb);
1334 drm_gem_object_unreference_unlocked(obj);
1335 return ERR_PTR(ret);
1336 }
1337
1338 return &radeon_fb->base;
1339 }
1340
1341 static void radeon_output_poll_changed(struct drm_device *dev)
1342 {
1343 struct radeon_device *rdev = dev->dev_private;
1344 radeon_fb_output_poll_changed(rdev);
1345 }
1346
1347 static const struct drm_mode_config_funcs radeon_mode_funcs = {
1348 .fb_create = radeon_user_framebuffer_create,
1349 .output_poll_changed = radeon_output_poll_changed
1350 };
1351
1352 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1353 { { 0, "driver" },
1354 { 1, "bios" },
1355 };
1356
1357 static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1358 { { TV_STD_NTSC, "ntsc" },
1359 { TV_STD_PAL, "pal" },
1360 { TV_STD_PAL_M, "pal-m" },
1361 { TV_STD_PAL_60, "pal-60" },
1362 { TV_STD_NTSC_J, "ntsc-j" },
1363 { TV_STD_SCART_PAL, "scart-pal" },
1364 { TV_STD_PAL_CN, "pal-cn" },
1365 { TV_STD_SECAM, "secam" },
1366 };
1367
1368 static struct drm_prop_enum_list radeon_underscan_enum_list[] =
1369 { { UNDERSCAN_OFF, "off" },
1370 { UNDERSCAN_ON, "on" },
1371 { UNDERSCAN_AUTO, "auto" },
1372 };
1373
1374 static struct drm_prop_enum_list radeon_audio_enum_list[] =
1375 { { RADEON_AUDIO_DISABLE, "off" },
1376 { RADEON_AUDIO_ENABLE, "on" },
1377 { RADEON_AUDIO_AUTO, "auto" },
1378 };
1379
1380 /* XXX support different dither options? spatial, temporal, both, etc. */
1381 static struct drm_prop_enum_list radeon_dither_enum_list[] =
1382 { { RADEON_FMT_DITHER_DISABLE, "off" },
1383 { RADEON_FMT_DITHER_ENABLE, "on" },
1384 };
1385
1386 static struct drm_prop_enum_list radeon_output_csc_enum_list[] =
1387 { { RADEON_OUTPUT_CSC_BYPASS, "bypass" },
1388 { RADEON_OUTPUT_CSC_TVRGB, "tvrgb" },
1389 { RADEON_OUTPUT_CSC_YCBCR601, "ycbcr601" },
1390 { RADEON_OUTPUT_CSC_YCBCR709, "ycbcr709" },
1391 };
1392
1393 static int radeon_modeset_create_props(struct radeon_device *rdev)
1394 {
1395 int sz;
1396
1397 if (rdev->is_atom_bios) {
1398 rdev->mode_info.coherent_mode_property =
1399 drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1400 if (!rdev->mode_info.coherent_mode_property)
1401 return -ENOMEM;
1402 }
1403
1404 if (!ASIC_IS_AVIVO(rdev)) {
1405 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
1406 rdev->mode_info.tmds_pll_property =
1407 drm_property_create_enum(rdev->ddev, 0,
1408 "tmds_pll",
1409 radeon_tmds_pll_enum_list, sz);
1410 }
1411
1412 rdev->mode_info.load_detect_property =
1413 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1414 if (!rdev->mode_info.load_detect_property)
1415 return -ENOMEM;
1416
1417 drm_mode_create_scaling_mode_property(rdev->ddev);
1418
1419 sz = ARRAY_SIZE(radeon_tv_std_enum_list);
1420 rdev->mode_info.tv_std_property =
1421 drm_property_create_enum(rdev->ddev, 0,
1422 "tv standard",
1423 radeon_tv_std_enum_list, sz);
1424
1425 sz = ARRAY_SIZE(radeon_underscan_enum_list);
1426 rdev->mode_info.underscan_property =
1427 drm_property_create_enum(rdev->ddev, 0,
1428 "underscan",
1429 radeon_underscan_enum_list, sz);
1430
1431 rdev->mode_info.underscan_hborder_property =
1432 drm_property_create_range(rdev->ddev, 0,
1433 "underscan hborder", 0, 128);
1434 if (!rdev->mode_info.underscan_hborder_property)
1435 return -ENOMEM;
1436
1437 rdev->mode_info.underscan_vborder_property =
1438 drm_property_create_range(rdev->ddev, 0,
1439 "underscan vborder", 0, 128);
1440 if (!rdev->mode_info.underscan_vborder_property)
1441 return -ENOMEM;
1442
1443 sz = ARRAY_SIZE(radeon_audio_enum_list);
1444 rdev->mode_info.audio_property =
1445 drm_property_create_enum(rdev->ddev, 0,
1446 "audio",
1447 radeon_audio_enum_list, sz);
1448
1449 sz = ARRAY_SIZE(radeon_dither_enum_list);
1450 rdev->mode_info.dither_property =
1451 drm_property_create_enum(rdev->ddev, 0,
1452 "dither",
1453 radeon_dither_enum_list, sz);
1454
1455 sz = ARRAY_SIZE(radeon_output_csc_enum_list);
1456 rdev->mode_info.output_csc_property =
1457 drm_property_create_enum(rdev->ddev, 0,
1458 "output_csc",
1459 radeon_output_csc_enum_list, sz);
1460
1461 return 0;
1462 }
1463
1464 void radeon_update_display_priority(struct radeon_device *rdev)
1465 {
1466 /* adjustment options for the display watermarks */
1467 if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1468 /* set display priority to high for r3xx, rv515 chips
1469 * this avoids flickering due to underflow to the
1470 * display controllers during heavy acceleration.
1471 * Don't force high on rs4xx igp chips as it seems to
1472 * affect the sound card. See kernel bug 15982.
1473 */
1474 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1475 !(rdev->flags & RADEON_IS_IGP))
1476 rdev->disp_priority = 2;
1477 else
1478 rdev->disp_priority = 0;
1479 } else
1480 rdev->disp_priority = radeon_disp_priority;
1481
1482 }
1483
1484 /*
1485 * Allocate hdmi structs and determine register offsets
1486 */
1487 static void radeon_afmt_init(struct radeon_device *rdev)
1488 {
1489 int i;
1490
1491 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1492 rdev->mode_info.afmt[i] = NULL;
1493
1494 if (ASIC_IS_NODCE(rdev)) {
1495 /* nothing to do */
1496 } else if (ASIC_IS_DCE4(rdev)) {
1497 static uint32_t eg_offsets[] = {
1498 EVERGREEN_CRTC0_REGISTER_OFFSET,
1499 EVERGREEN_CRTC1_REGISTER_OFFSET,
1500 EVERGREEN_CRTC2_REGISTER_OFFSET,
1501 EVERGREEN_CRTC3_REGISTER_OFFSET,
1502 EVERGREEN_CRTC4_REGISTER_OFFSET,
1503 EVERGREEN_CRTC5_REGISTER_OFFSET,
1504 0x13830 - 0x7030,
1505 };
1506 int num_afmt;
1507
1508 /* DCE8 has 7 audio blocks tied to DIG encoders */
1509 /* DCE6 has 6 audio blocks tied to DIG encoders */
1510 /* DCE4/5 has 6 audio blocks tied to DIG encoders */
1511 /* DCE4.1 has 2 audio blocks tied to DIG encoders */
1512 if (ASIC_IS_DCE8(rdev))
1513 num_afmt = 7;
1514 else if (ASIC_IS_DCE6(rdev))
1515 num_afmt = 6;
1516 else if (ASIC_IS_DCE5(rdev))
1517 num_afmt = 6;
1518 else if (ASIC_IS_DCE41(rdev))
1519 num_afmt = 2;
1520 else /* DCE4 */
1521 num_afmt = 6;
1522
1523 BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
1524 for (i = 0; i < num_afmt; i++) {
1525 rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1526 if (rdev->mode_info.afmt[i]) {
1527 rdev->mode_info.afmt[i]->offset = eg_offsets[i];
1528 rdev->mode_info.afmt[i]->id = i;
1529 }
1530 }
1531 } else if (ASIC_IS_DCE3(rdev)) {
1532 /* DCE3.x has 2 audio blocks tied to DIG encoders */
1533 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1534 if (rdev->mode_info.afmt[0]) {
1535 rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1536 rdev->mode_info.afmt[0]->id = 0;
1537 }
1538 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1539 if (rdev->mode_info.afmt[1]) {
1540 rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1541 rdev->mode_info.afmt[1]->id = 1;
1542 }
1543 } else if (ASIC_IS_DCE2(rdev)) {
1544 /* DCE2 has at least 1 routable audio block */
1545 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1546 if (rdev->mode_info.afmt[0]) {
1547 rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1548 rdev->mode_info.afmt[0]->id = 0;
1549 }
1550 /* r6xx has 2 routable audio blocks */
1551 if (rdev->family >= CHIP_R600) {
1552 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1553 if (rdev->mode_info.afmt[1]) {
1554 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1555 rdev->mode_info.afmt[1]->id = 1;
1556 }
1557 }
1558 }
1559 }
1560
1561 static void radeon_afmt_fini(struct radeon_device *rdev)
1562 {
1563 int i;
1564
1565 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1566 kfree(rdev->mode_info.afmt[i]);
1567 rdev->mode_info.afmt[i] = NULL;
1568 }
1569 }
1570
1571 int radeon_modeset_init(struct radeon_device *rdev)
1572 {
1573 int i;
1574 int ret;
1575
1576 drm_mode_config_init(rdev->ddev);
1577 rdev->mode_info.mode_config_initialized = true;
1578
1579 rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1580
1581 if (ASIC_IS_DCE5(rdev)) {
1582 rdev->ddev->mode_config.max_width = 16384;
1583 rdev->ddev->mode_config.max_height = 16384;
1584 } else if (ASIC_IS_AVIVO(rdev)) {
1585 rdev->ddev->mode_config.max_width = 8192;
1586 rdev->ddev->mode_config.max_height = 8192;
1587 } else {
1588 rdev->ddev->mode_config.max_width = 4096;
1589 rdev->ddev->mode_config.max_height = 4096;
1590 }
1591
1592 rdev->ddev->mode_config.preferred_depth = 24;
1593 rdev->ddev->mode_config.prefer_shadow = 1;
1594
1595 rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1596
1597 ret = radeon_modeset_create_props(rdev);
1598 if (ret) {
1599 return ret;
1600 }
1601
1602 /* init i2c buses */
1603 radeon_i2c_init(rdev);
1604
1605 /* check combios for a valid hardcoded EDID - Sun servers */
1606 if (!rdev->is_atom_bios) {
1607 /* check for hardcoded EDID in BIOS */
1608 radeon_combios_check_hardcoded_edid(rdev);
1609 }
1610
1611 /* allocate crtcs */
1612 for (i = 0; i < rdev->num_crtc; i++) {
1613 radeon_crtc_init(rdev->ddev, i);
1614 }
1615
1616 /* okay we should have all the bios connectors */
1617 ret = radeon_setup_enc_conn(rdev->ddev);
1618 if (!ret) {
1619 return ret;
1620 }
1621
1622 /* init dig PHYs, disp eng pll */
1623 if (rdev->is_atom_bios) {
1624 radeon_atom_encoder_init(rdev);
1625 radeon_atom_disp_eng_pll_init(rdev);
1626 }
1627
1628 /* initialize hpd */
1629 radeon_hpd_init(rdev);
1630
1631 /* setup afmt */
1632 radeon_afmt_init(rdev);
1633
1634 radeon_fbdev_init(rdev);
1635 drm_kms_helper_poll_init(rdev->ddev);
1636
1637 /* do pm late init */
1638 ret = radeon_pm_late_init(rdev);
1639
1640 return 0;
1641 }
1642
1643 void radeon_modeset_fini(struct radeon_device *rdev)
1644 {
1645 radeon_fbdev_fini(rdev);
1646 kfree(rdev->mode_info.bios_hardcoded_edid);
1647
1648 if (rdev->mode_info.mode_config_initialized) {
1649 radeon_afmt_fini(rdev);
1650 drm_kms_helper_poll_fini(rdev->ddev);
1651 radeon_hpd_fini(rdev);
1652 drm_mode_config_cleanup(rdev->ddev);
1653 rdev->mode_info.mode_config_initialized = false;
1654 }
1655 /* free i2c buses */
1656 radeon_i2c_fini(rdev);
1657 }
1658
1659 static bool is_hdtv_mode(const struct drm_display_mode *mode)
1660 {
1661 /* try and guess if this is a tv or a monitor */
1662 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1663 (mode->vdisplay == 576) || /* 576p */
1664 (mode->vdisplay == 720) || /* 720p */
1665 (mode->vdisplay == 1080)) /* 1080p */
1666 return true;
1667 else
1668 return false;
1669 }
1670
1671 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1672 const struct drm_display_mode *mode,
1673 struct drm_display_mode *adjusted_mode)
1674 {
1675 struct drm_device *dev = crtc->dev;
1676 struct radeon_device *rdev = dev->dev_private;
1677 struct drm_encoder *encoder;
1678 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1679 struct radeon_encoder *radeon_encoder;
1680 struct drm_connector *connector;
1681 struct radeon_connector *radeon_connector;
1682 bool first = true;
1683 u32 src_v = 1, dst_v = 1;
1684 u32 src_h = 1, dst_h = 1;
1685
1686 radeon_crtc->h_border = 0;
1687 radeon_crtc->v_border = 0;
1688
1689 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1690 if (encoder->crtc != crtc)
1691 continue;
1692 radeon_encoder = to_radeon_encoder(encoder);
1693 connector = radeon_get_connector_for_encoder(encoder);
1694 radeon_connector = to_radeon_connector(connector);
1695
1696 if (first) {
1697 /* set scaling */
1698 if (radeon_encoder->rmx_type == RMX_OFF)
1699 radeon_crtc->rmx_type = RMX_OFF;
1700 else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1701 mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1702 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1703 else
1704 radeon_crtc->rmx_type = RMX_OFF;
1705 /* copy native mode */
1706 memcpy(&radeon_crtc->native_mode,
1707 &radeon_encoder->native_mode,
1708 sizeof(struct drm_display_mode));
1709 src_v = crtc->mode.vdisplay;
1710 dst_v = radeon_crtc->native_mode.vdisplay;
1711 src_h = crtc->mode.hdisplay;
1712 dst_h = radeon_crtc->native_mode.hdisplay;
1713
1714 /* fix up for overscan on hdmi */
1715 if (ASIC_IS_AVIVO(rdev) &&
1716 (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1717 ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1718 ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1719 drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
1720 is_hdtv_mode(mode)))) {
1721 if (radeon_encoder->underscan_hborder != 0)
1722 radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1723 else
1724 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1725 if (radeon_encoder->underscan_vborder != 0)
1726 radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1727 else
1728 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1729 radeon_crtc->rmx_type = RMX_FULL;
1730 src_v = crtc->mode.vdisplay;
1731 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1732 src_h = crtc->mode.hdisplay;
1733 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1734 }
1735 first = false;
1736 } else {
1737 if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1738 /* WARNING: Right now this can't happen but
1739 * in the future we need to check that scaling
1740 * are consistent across different encoder
1741 * (ie all encoder can work with the same
1742 * scaling).
1743 */
1744 DRM_ERROR("Scaling not consistent across encoder.\n");
1745 return false;
1746 }
1747 }
1748 }
1749 if (radeon_crtc->rmx_type != RMX_OFF) {
1750 fixed20_12 a, b;
1751 a.full = dfixed_const(src_v);
1752 b.full = dfixed_const(dst_v);
1753 radeon_crtc->vsc.full = dfixed_div(a, b);
1754 a.full = dfixed_const(src_h);
1755 b.full = dfixed_const(dst_h);
1756 radeon_crtc->hsc.full = dfixed_div(a, b);
1757 } else {
1758 radeon_crtc->vsc.full = dfixed_const(1);
1759 radeon_crtc->hsc.full = dfixed_const(1);
1760 }
1761 return true;
1762 }
1763
1764 /*
1765 * Retrieve current video scanout position of crtc on a given gpu, and
1766 * an optional accurate timestamp of when query happened.
1767 *
1768 * \param dev Device to query.
1769 * \param crtc Crtc to query.
1770 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
1771 * \param *vpos Location where vertical scanout position should be stored.
1772 * \param *hpos Location where horizontal scanout position should go.
1773 * \param *stime Target location for timestamp taken immediately before
1774 * scanout position query. Can be NULL to skip timestamp.
1775 * \param *etime Target location for timestamp taken immediately after
1776 * scanout position query. Can be NULL to skip timestamp.
1777 *
1778 * Returns vpos as a positive number while in active scanout area.
1779 * Returns vpos as a negative number inside vblank, counting the number
1780 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1781 * until start of active scanout / end of vblank."
1782 *
1783 * \return Flags, or'ed together as follows:
1784 *
1785 * DRM_SCANOUTPOS_VALID = Query successful.
1786 * DRM_SCANOUTPOS_INVBL = Inside vblank.
1787 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1788 * this flag means that returned position may be offset by a constant but
1789 * unknown small number of scanlines wrt. real scanout position.
1790 *
1791 */
1792 int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
1793 unsigned int flags, int *vpos, int *hpos,
1794 ktime_t *stime, ktime_t *etime,
1795 const struct drm_display_mode *mode)
1796 {
1797 u32 stat_crtc = 0, vbl = 0, position = 0;
1798 int vbl_start, vbl_end, vtotal, ret = 0;
1799 bool in_vbl = true;
1800
1801 struct radeon_device *rdev = dev->dev_private;
1802
1803 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
1804
1805 /* Get optional system timestamp before query. */
1806 if (stime)
1807 *stime = ktime_get();
1808
1809 if (ASIC_IS_DCE4(rdev)) {
1810 if (pipe == 0) {
1811 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1812 EVERGREEN_CRTC0_REGISTER_OFFSET);
1813 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1814 EVERGREEN_CRTC0_REGISTER_OFFSET);
1815 ret |= DRM_SCANOUTPOS_VALID;
1816 }
1817 if (pipe == 1) {
1818 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1819 EVERGREEN_CRTC1_REGISTER_OFFSET);
1820 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1821 EVERGREEN_CRTC1_REGISTER_OFFSET);
1822 ret |= DRM_SCANOUTPOS_VALID;
1823 }
1824 if (pipe == 2) {
1825 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1826 EVERGREEN_CRTC2_REGISTER_OFFSET);
1827 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1828 EVERGREEN_CRTC2_REGISTER_OFFSET);
1829 ret |= DRM_SCANOUTPOS_VALID;
1830 }
1831 if (pipe == 3) {
1832 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1833 EVERGREEN_CRTC3_REGISTER_OFFSET);
1834 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1835 EVERGREEN_CRTC3_REGISTER_OFFSET);
1836 ret |= DRM_SCANOUTPOS_VALID;
1837 }
1838 if (pipe == 4) {
1839 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1840 EVERGREEN_CRTC4_REGISTER_OFFSET);
1841 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1842 EVERGREEN_CRTC4_REGISTER_OFFSET);
1843 ret |= DRM_SCANOUTPOS_VALID;
1844 }
1845 if (pipe == 5) {
1846 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1847 EVERGREEN_CRTC5_REGISTER_OFFSET);
1848 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1849 EVERGREEN_CRTC5_REGISTER_OFFSET);
1850 ret |= DRM_SCANOUTPOS_VALID;
1851 }
1852 } else if (ASIC_IS_AVIVO(rdev)) {
1853 if (pipe == 0) {
1854 vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1855 position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1856 ret |= DRM_SCANOUTPOS_VALID;
1857 }
1858 if (pipe == 1) {
1859 vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1860 position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1861 ret |= DRM_SCANOUTPOS_VALID;
1862 }
1863 } else {
1864 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1865 if (pipe == 0) {
1866 /* Assume vbl_end == 0, get vbl_start from
1867 * upper 16 bits.
1868 */
1869 vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1870 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1871 /* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1872 position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1873 stat_crtc = RREG32(RADEON_CRTC_STATUS);
1874 if (!(stat_crtc & 1))
1875 in_vbl = false;
1876
1877 ret |= DRM_SCANOUTPOS_VALID;
1878 }
1879 if (pipe == 1) {
1880 vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1881 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1882 position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1883 stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1884 if (!(stat_crtc & 1))
1885 in_vbl = false;
1886
1887 ret |= DRM_SCANOUTPOS_VALID;
1888 }
1889 }
1890
1891 /* Get optional system timestamp after query. */
1892 if (etime)
1893 *etime = ktime_get();
1894
1895 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
1896
1897 /* Decode into vertical and horizontal scanout position. */
1898 *vpos = position & 0x1fff;
1899 *hpos = (position >> 16) & 0x1fff;
1900
1901 /* Valid vblank area boundaries from gpu retrieved? */
1902 if (vbl > 0) {
1903 /* Yes: Decode. */
1904 ret |= DRM_SCANOUTPOS_ACCURATE;
1905 vbl_start = vbl & 0x1fff;
1906 vbl_end = (vbl >> 16) & 0x1fff;
1907 }
1908 else {
1909 /* No: Fake something reasonable which gives at least ok results. */
1910 vbl_start = mode->crtc_vdisplay;
1911 vbl_end = 0;
1912 }
1913
1914 /* Test scanout position against vblank region. */
1915 if ((*vpos < vbl_start) && (*vpos >= vbl_end))
1916 in_vbl = false;
1917
1918 /* Check if inside vblank area and apply corrective offsets:
1919 * vpos will then be >=0 in video scanout area, but negative
1920 * within vblank area, counting down the number of lines until
1921 * start of scanout.
1922 */
1923
1924 /* Inside "upper part" of vblank area? Apply corrective offset if so: */
1925 if (in_vbl && (*vpos >= vbl_start)) {
1926 vtotal = mode->crtc_vtotal;
1927 *vpos = *vpos - vtotal;
1928 }
1929
1930 /* Correct for shifted end of vbl at vbl_end. */
1931 *vpos = *vpos - vbl_end;
1932
1933 /* In vblank? */
1934 if (in_vbl)
1935 ret |= DRM_SCANOUTPOS_IN_VBLANK;
1936
1937 /* Is vpos outside nominal vblank area, but less than
1938 * 1/100 of a frame height away from start of vblank?
1939 * If so, assume this isn't a massively delayed vblank
1940 * interrupt, but a vblank interrupt that fired a few
1941 * microseconds before true start of vblank. Compensate
1942 * by adding a full frame duration to the final timestamp.
1943 * Happens, e.g., on ATI R500, R600.
1944 *
1945 * We only do this if DRM_CALLED_FROM_VBLIRQ.
1946 */
1947 if ((flags & DRM_CALLED_FROM_VBLIRQ) && !in_vbl) {
1948 vbl_start = mode->crtc_vdisplay;
1949 vtotal = mode->crtc_vtotal;
1950
1951 if (vbl_start - *vpos < vtotal / 100) {
1952 *vpos -= vtotal;
1953
1954 /* Signal this correction as "applied". */
1955 ret |= 0x8;
1956 }
1957 }
1958
1959 return ret;
1960 }
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