2 * Copyright 2007-8 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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.
23 * Authors: Dave Airlie
27 #include <drm/radeon_drm.h>
31 #include <asm/div64.h>
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>
38 #include <linux/gcd.h>
40 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
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;
47 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
48 WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
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);
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);
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);
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));
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);
74 static void dce4_crtc_load_lut(struct drm_crtc *crtc)
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;
81 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
82 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
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);
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);
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);
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));
104 static void dce5_crtc_load_lut(struct drm_crtc *crtc)
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;
111 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
115 WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
116 (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
117 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
118 WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
119 NI_GRPH_PRESCALE_BYPASS);
120 WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
121 NI_OVL_PRESCALE_BYPASS);
122 WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
123 (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
124 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
126 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
128 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
129 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
130 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
132 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
133 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
134 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
136 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
137 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
139 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
140 for (i = 0; i < 256; i++) {
141 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
142 (radeon_crtc->lut_r[i] << 20) |
143 (radeon_crtc->lut_g[i] << 10) |
144 (radeon_crtc->lut_b[i] << 0));
147 WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
148 (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
149 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
150 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
151 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
152 WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
153 (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
154 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
155 WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
156 (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
157 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
158 WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
159 (NI_OUTPUT_CSC_GRPH_MODE(radeon_crtc->output_csc) |
160 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
161 /* XXX match this to the depth of the crtc fmt block, move to modeset? */
162 WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
163 if (ASIC_IS_DCE8(rdev)) {
164 /* XXX this only needs to be programmed once per crtc at startup,
165 * not sure where the best place for it is
167 WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
168 CIK_CURSOR_ALPHA_BLND_ENA);
172 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
174 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
175 struct drm_device *dev = crtc->dev;
176 struct radeon_device *rdev = dev->dev_private;
180 dac2_cntl = RREG32(RADEON_DAC_CNTL2);
181 if (radeon_crtc->crtc_id == 0)
182 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
184 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
185 WREG32(RADEON_DAC_CNTL2, dac2_cntl);
187 WREG8(RADEON_PALETTE_INDEX, 0);
188 for (i = 0; i < 256; i++) {
189 WREG32(RADEON_PALETTE_30_DATA,
190 (radeon_crtc->lut_r[i] << 20) |
191 (radeon_crtc->lut_g[i] << 10) |
192 (radeon_crtc->lut_b[i] << 0));
196 void radeon_crtc_load_lut(struct drm_crtc *crtc)
198 struct drm_device *dev = crtc->dev;
199 struct radeon_device *rdev = dev->dev_private;
204 if (ASIC_IS_DCE5(rdev))
205 dce5_crtc_load_lut(crtc);
206 else if (ASIC_IS_DCE4(rdev))
207 dce4_crtc_load_lut(crtc);
208 else if (ASIC_IS_AVIVO(rdev))
209 avivo_crtc_load_lut(crtc);
211 legacy_crtc_load_lut(crtc);
214 /** Sets the color ramps on behalf of fbcon */
215 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
218 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
220 radeon_crtc->lut_r[regno] = red >> 6;
221 radeon_crtc->lut_g[regno] = green >> 6;
222 radeon_crtc->lut_b[regno] = blue >> 6;
225 /** Gets the color ramps on behalf of fbcon */
226 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
227 u16 *blue, int regno)
229 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
231 *red = radeon_crtc->lut_r[regno] << 6;
232 *green = radeon_crtc->lut_g[regno] << 6;
233 *blue = radeon_crtc->lut_b[regno] << 6;
236 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
237 u16 *blue, uint32_t start, uint32_t size)
239 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
240 int end = (start + size > 256) ? 256 : start + size, i;
242 /* userspace palettes are always correct as is */
243 for (i = start; i < end; i++) {
244 radeon_crtc->lut_r[i] = red[i] >> 6;
245 radeon_crtc->lut_g[i] = green[i] >> 6;
246 radeon_crtc->lut_b[i] = blue[i] >> 6;
248 radeon_crtc_load_lut(crtc);
251 static void radeon_crtc_destroy(struct drm_crtc *crtc)
253 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
255 drm_crtc_cleanup(crtc);
256 destroy_workqueue(radeon_crtc->flip_queue);
261 * radeon_unpin_work_func - unpin old buffer object
263 * @__work - kernel work item
265 * Unpin the old frame buffer object outside of the interrupt handler
267 static void radeon_unpin_work_func(struct work_struct *__work)
269 struct radeon_flip_work *work =
270 container_of(__work, struct radeon_flip_work, unpin_work);
273 /* unpin of the old buffer */
274 r = radeon_bo_reserve(work->old_rbo, false);
275 if (likely(r == 0)) {
276 r = radeon_bo_unpin(work->old_rbo);
277 if (unlikely(r != 0)) {
278 DRM_ERROR("failed to unpin buffer after flip\n");
280 radeon_bo_unreserve(work->old_rbo);
282 DRM_ERROR("failed to reserve buffer after flip\n");
284 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
288 void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
290 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
295 /* can happen during initialization */
296 if (radeon_crtc == NULL)
299 /* Skip the pageflip completion check below (based on polling) on
300 * asics which reliably support hw pageflip completion irqs. pflip
301 * irqs are a reliable and race-free method of handling pageflip
302 * completion detection. A use_pflipirq module parameter < 2 allows
303 * to override this in case of asics with faulty pflip irqs.
304 * A module parameter of 0 would only use this polling based path,
305 * a parameter of 1 would use pflip irq only as a backup to this
306 * path, as in Linux 3.16.
308 if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
311 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
312 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
313 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
314 "RADEON_FLIP_SUBMITTED(%d)\n",
315 radeon_crtc->flip_status,
316 RADEON_FLIP_SUBMITTED);
317 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
321 update_pending = radeon_page_flip_pending(rdev, crtc_id);
323 /* Has the pageflip already completed in crtc, or is it certain
324 * to complete in this vblank?
326 if (update_pending &&
327 (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev,
329 USE_REAL_VBLANKSTART,
330 &vpos, &hpos, NULL, NULL,
331 &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) &&
332 ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
333 (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
334 /* crtc didn't flip in this target vblank interval,
335 * but flip is pending in crtc. Based on the current
336 * scanout position we know that the current frame is
337 * (nearly) complete and the flip will (likely)
338 * complete before the start of the next frame.
342 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
344 radeon_crtc_handle_flip(rdev, crtc_id);
348 * radeon_crtc_handle_flip - page flip completed
350 * @rdev: radeon device pointer
351 * @crtc_id: crtc number this event is for
353 * Called when we are sure that a page flip for this crtc is completed.
355 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
357 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
358 struct radeon_flip_work *work;
361 /* this can happen at init */
362 if (radeon_crtc == NULL)
365 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
366 work = radeon_crtc->flip_work;
367 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
368 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
369 "RADEON_FLIP_SUBMITTED(%d)\n",
370 radeon_crtc->flip_status,
371 RADEON_FLIP_SUBMITTED);
372 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
376 /* Pageflip completed. Clean up. */
377 radeon_crtc->flip_status = RADEON_FLIP_NONE;
378 radeon_crtc->flip_work = NULL;
380 /* wakeup userspace */
382 drm_send_vblank_event(rdev->ddev, crtc_id, work->event);
384 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
386 drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
387 radeon_irq_kms_pflip_irq_put(rdev, work->crtc_id);
388 queue_work(radeon_crtc->flip_queue, &work->unpin_work);
392 * radeon_flip_work_func - page flip framebuffer
394 * @work - kernel work item
396 * Wait for the buffer object to become idle and do the actual page flip
398 static void radeon_flip_work_func(struct work_struct *__work)
400 struct radeon_flip_work *work =
401 container_of(__work, struct radeon_flip_work, flip_work);
402 struct radeon_device *rdev = work->rdev;
403 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
405 struct drm_crtc *crtc = &radeon_crtc->base;
408 int vpos, hpos, stat, min_udelay = 0;
410 struct drm_vblank_crtc *vblank = &crtc->dev->vblank[work->crtc_id];
412 down_read(&rdev->exclusive_lock);
414 struct radeon_fence *fence;
416 fence = to_radeon_fence(work->fence);
417 if (fence && fence->rdev == rdev) {
418 r = radeon_fence_wait(fence, false);
420 up_read(&rdev->exclusive_lock);
422 r = radeon_gpu_reset(rdev);
423 } while (r == -EAGAIN);
424 down_read(&rdev->exclusive_lock);
427 r = fence_wait(work->fence, false);
430 DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
432 /* We continue with the page flip even if we failed to wait on
433 * the fence, otherwise the DRM core and userspace will be
434 * confused about which BO the CRTC is scanning out
437 fence_put(work->fence);
441 /* We borrow the event spin lock for protecting flip_status */
442 spin_lock_irqsave(&crtc->dev->event_lock, flags);
444 /* set the proper interrupt */
445 radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
447 /* If this happens to execute within the "virtually extended" vblank
448 * interval before the start of the real vblank interval then it needs
449 * to delay programming the mmio flip until the real vblank is entered.
450 * This prevents completing a flip too early due to the way we fudge
451 * our vblank counter and vblank timestamps in order to work around the
452 * problem that the hw fires vblank interrupts before actual start of
453 * vblank (when line buffer refilling is done for a frame). It
454 * complements the fudging logic in radeon_get_crtc_scanoutpos() for
455 * timestamping and radeon_get_vblank_counter_kms() for vblank counts.
457 * In practice this won't execute very often unless on very fast
458 * machines because the time window for this to happen is very small.
460 while (radeon_crtc->enabled && --repcnt) {
461 /* GET_DISTANCE_TO_VBLANKSTART returns distance to real vblank
462 * start in hpos, and to the "fudged earlier" vblank start in
465 stat = radeon_get_crtc_scanoutpos(rdev->ddev, work->crtc_id,
466 GET_DISTANCE_TO_VBLANKSTART,
467 &vpos, &hpos, NULL, NULL,
470 if ((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
471 (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE) ||
472 !(vpos >= 0 && hpos <= 0))
475 /* Sleep at least until estimated real start of hw vblank */
476 min_udelay = (-hpos + 1) * max(vblank->linedur_ns / 1000, 5);
477 if (min_udelay > vblank->framedur_ns / 2000) {
478 /* Don't wait ridiculously long - something is wrong */
482 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
483 usleep_range(min_udelay, 2 * min_udelay);
484 spin_lock_irqsave(&crtc->dev->event_lock, flags);
488 DRM_DEBUG_DRIVER("Delay problem on crtc %d: min_udelay %d, "
489 "framedur %d, linedur %d, stat %d, vpos %d, "
490 "hpos %d\n", work->crtc_id, min_udelay,
491 vblank->framedur_ns / 1000,
492 vblank->linedur_ns / 1000, stat, vpos, hpos);
494 /* do the flip (mmio) */
495 radeon_page_flip(rdev, radeon_crtc->crtc_id, work->base);
497 radeon_crtc->flip_status = RADEON_FLIP_SUBMITTED;
498 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
499 up_read(&rdev->exclusive_lock);
502 static int radeon_crtc_page_flip(struct drm_crtc *crtc,
503 struct drm_framebuffer *fb,
504 struct drm_pending_vblank_event *event,
505 uint32_t page_flip_flags)
507 struct drm_device *dev = crtc->dev;
508 struct radeon_device *rdev = dev->dev_private;
509 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
510 struct radeon_framebuffer *old_radeon_fb;
511 struct radeon_framebuffer *new_radeon_fb;
512 struct drm_gem_object *obj;
513 struct radeon_flip_work *work;
514 struct radeon_bo *new_rbo;
515 uint32_t tiling_flags, pitch_pixels;
520 work = kzalloc(sizeof *work, GFP_KERNEL);
524 INIT_WORK(&work->flip_work, radeon_flip_work_func);
525 INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
528 work->crtc_id = radeon_crtc->crtc_id;
531 /* schedule unpin of the old buffer */
532 old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
533 obj = old_radeon_fb->obj;
535 /* take a reference to the old object */
536 drm_gem_object_reference(obj);
537 work->old_rbo = gem_to_radeon_bo(obj);
539 new_radeon_fb = to_radeon_framebuffer(fb);
540 obj = new_radeon_fb->obj;
541 new_rbo = gem_to_radeon_bo(obj);
543 /* pin the new buffer */
544 DRM_DEBUG_DRIVER("flip-ioctl() cur_rbo = %p, new_rbo = %p\n",
545 work->old_rbo, new_rbo);
547 r = radeon_bo_reserve(new_rbo, false);
548 if (unlikely(r != 0)) {
549 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
552 /* Only 27 bit offset for legacy CRTC */
553 r = radeon_bo_pin_restricted(new_rbo, RADEON_GEM_DOMAIN_VRAM,
554 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
555 if (unlikely(r != 0)) {
556 radeon_bo_unreserve(new_rbo);
558 DRM_ERROR("failed to pin new rbo buffer before flip\n");
561 work->fence = fence_get(reservation_object_get_excl(new_rbo->tbo.resv));
562 radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
563 radeon_bo_unreserve(new_rbo);
565 if (!ASIC_IS_AVIVO(rdev)) {
566 /* crtc offset is from display base addr not FB location */
567 base -= radeon_crtc->legacy_display_base_addr;
568 pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
570 if (tiling_flags & RADEON_TILING_MACRO) {
571 if (ASIC_IS_R300(rdev)) {
574 int byteshift = fb->bits_per_pixel >> 4;
575 int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11;
576 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
579 int offset = crtc->y * pitch_pixels + crtc->x;
580 switch (fb->bits_per_pixel) {
602 r = drm_vblank_get(crtc->dev, radeon_crtc->crtc_id);
604 DRM_ERROR("failed to get vblank before flip\n");
608 /* We borrow the event spin lock for protecting flip_work */
609 spin_lock_irqsave(&crtc->dev->event_lock, flags);
611 if (radeon_crtc->flip_status != RADEON_FLIP_NONE) {
612 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
613 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
617 radeon_crtc->flip_status = RADEON_FLIP_PENDING;
618 radeon_crtc->flip_work = work;
621 crtc->primary->fb = fb;
623 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
625 queue_work(radeon_crtc->flip_queue, &work->flip_work);
629 drm_vblank_put(crtc->dev, radeon_crtc->crtc_id);
632 if (unlikely(radeon_bo_reserve(new_rbo, false) != 0)) {
633 DRM_ERROR("failed to reserve new rbo in error path\n");
636 if (unlikely(radeon_bo_unpin(new_rbo) != 0)) {
637 DRM_ERROR("failed to unpin new rbo in error path\n");
639 radeon_bo_unreserve(new_rbo);
642 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
643 fence_put(work->fence);
649 radeon_crtc_set_config(struct drm_mode_set *set)
651 struct drm_device *dev;
652 struct radeon_device *rdev;
653 struct drm_crtc *crtc;
657 if (!set || !set->crtc)
660 dev = set->crtc->dev;
662 ret = pm_runtime_get_sync(dev->dev);
664 pm_runtime_put_autosuspend(dev->dev);
668 ret = drm_crtc_helper_set_config(set);
670 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
674 pm_runtime_mark_last_busy(dev->dev);
676 rdev = dev->dev_private;
677 /* if we have active crtcs and we don't have a power ref,
678 take the current one */
679 if (active && !rdev->have_disp_power_ref) {
680 rdev->have_disp_power_ref = true;
683 /* if we have no active crtcs, then drop the power ref
685 if (!active && rdev->have_disp_power_ref) {
686 pm_runtime_put_autosuspend(dev->dev);
687 rdev->have_disp_power_ref = false;
690 /* drop the power reference we got coming in here */
691 pm_runtime_put_autosuspend(dev->dev);
694 static const struct drm_crtc_funcs radeon_crtc_funcs = {
695 .cursor_set2 = radeon_crtc_cursor_set2,
696 .cursor_move = radeon_crtc_cursor_move,
697 .gamma_set = radeon_crtc_gamma_set,
698 .set_config = radeon_crtc_set_config,
699 .destroy = radeon_crtc_destroy,
700 .page_flip = radeon_crtc_page_flip,
703 static void radeon_crtc_init(struct drm_device *dev, int index)
705 struct radeon_device *rdev = dev->dev_private;
706 struct radeon_crtc *radeon_crtc;
709 radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
710 if (radeon_crtc == NULL)
713 drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
715 drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
716 radeon_crtc->crtc_id = index;
717 radeon_crtc->flip_queue = create_singlethread_workqueue("radeon-crtc");
718 rdev->mode_info.crtcs[index] = radeon_crtc;
720 if (rdev->family >= CHIP_BONAIRE) {
721 radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
722 radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
724 radeon_crtc->max_cursor_width = CURSOR_WIDTH;
725 radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
727 dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
728 dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
731 radeon_crtc->mode_set.crtc = &radeon_crtc->base;
732 radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
733 radeon_crtc->mode_set.num_connectors = 0;
736 for (i = 0; i < 256; i++) {
737 radeon_crtc->lut_r[i] = i << 2;
738 radeon_crtc->lut_g[i] = i << 2;
739 radeon_crtc->lut_b[i] = i << 2;
742 if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
743 radeon_atombios_init_crtc(dev, radeon_crtc);
745 radeon_legacy_init_crtc(dev, radeon_crtc);
748 static const char *encoder_names[38] = {
768 "INTERNAL_KLDSCP_TMDS1",
769 "INTERNAL_KLDSCP_DVO1",
770 "INTERNAL_KLDSCP_DAC1",
771 "INTERNAL_KLDSCP_DAC2",
780 "INTERNAL_KLDSCP_LVTMA",
789 static const char *hpd_names[6] = {
798 static void radeon_print_display_setup(struct drm_device *dev)
800 struct drm_connector *connector;
801 struct radeon_connector *radeon_connector;
802 struct drm_encoder *encoder;
803 struct radeon_encoder *radeon_encoder;
807 DRM_INFO("Radeon Display Connectors\n");
808 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
809 radeon_connector = to_radeon_connector(connector);
810 DRM_INFO("Connector %d:\n", i);
811 DRM_INFO(" %s\n", connector->name);
812 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
813 DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]);
814 if (radeon_connector->ddc_bus) {
815 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
816 radeon_connector->ddc_bus->rec.mask_clk_reg,
817 radeon_connector->ddc_bus->rec.mask_data_reg,
818 radeon_connector->ddc_bus->rec.a_clk_reg,
819 radeon_connector->ddc_bus->rec.a_data_reg,
820 radeon_connector->ddc_bus->rec.en_clk_reg,
821 radeon_connector->ddc_bus->rec.en_data_reg,
822 radeon_connector->ddc_bus->rec.y_clk_reg,
823 radeon_connector->ddc_bus->rec.y_data_reg);
824 if (radeon_connector->router.ddc_valid)
825 DRM_INFO(" DDC Router 0x%x/0x%x\n",
826 radeon_connector->router.ddc_mux_control_pin,
827 radeon_connector->router.ddc_mux_state);
828 if (radeon_connector->router.cd_valid)
829 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n",
830 radeon_connector->router.cd_mux_control_pin,
831 radeon_connector->router.cd_mux_state);
833 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
834 connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
835 connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
836 connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
837 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
838 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
839 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
841 DRM_INFO(" Encoders:\n");
842 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
843 radeon_encoder = to_radeon_encoder(encoder);
844 devices = radeon_encoder->devices & radeon_connector->devices;
846 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
847 DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
848 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
849 DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
850 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
851 DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
852 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
853 DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
854 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
855 DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
856 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
857 DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
858 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
859 DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
860 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
861 DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
862 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
863 DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
864 if (devices & ATOM_DEVICE_TV1_SUPPORT)
865 DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
866 if (devices & ATOM_DEVICE_CV_SUPPORT)
867 DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
874 static bool radeon_setup_enc_conn(struct drm_device *dev)
876 struct radeon_device *rdev = dev->dev_private;
880 if (rdev->is_atom_bios) {
881 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
883 ret = radeon_get_atom_connector_info_from_object_table(dev);
885 ret = radeon_get_legacy_connector_info_from_bios(dev);
887 ret = radeon_get_legacy_connector_info_from_table(dev);
890 if (!ASIC_IS_AVIVO(rdev))
891 ret = radeon_get_legacy_connector_info_from_table(dev);
894 radeon_setup_encoder_clones(dev);
895 radeon_print_display_setup(dev);
904 * avivo_reduce_ratio - fractional number reduction
908 * @nom_min: minimum value for nominator
909 * @den_min: minimum value for denominator
911 * Find the greatest common divisor and apply it on both nominator and
912 * denominator, but make nominator and denominator are at least as large
913 * as their minimum values.
915 static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
916 unsigned nom_min, unsigned den_min)
920 /* reduce the numbers to a simpler ratio */
921 tmp = gcd(*nom, *den);
925 /* make sure nominator is large enough */
926 if (*nom < nom_min) {
927 tmp = DIV_ROUND_UP(nom_min, *nom);
932 /* make sure the denominator is large enough */
933 if (*den < den_min) {
934 tmp = DIV_ROUND_UP(den_min, *den);
941 * avivo_get_fb_ref_div - feedback and ref divider calculation
945 * @post_div: post divider
946 * @fb_div_max: feedback divider maximum
947 * @ref_div_max: reference divider maximum
948 * @fb_div: resulting feedback divider
949 * @ref_div: resulting reference divider
951 * Calculate feedback and reference divider for a given post divider. Makes
952 * sure we stay within the limits.
954 static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
955 unsigned fb_div_max, unsigned ref_div_max,
956 unsigned *fb_div, unsigned *ref_div)
958 /* limit reference * post divider to a maximum */
959 ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
961 /* get matching reference and feedback divider */
962 *ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
963 *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
965 /* limit fb divider to its maximum */
966 if (*fb_div > fb_div_max) {
967 *ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
968 *fb_div = fb_div_max;
973 * radeon_compute_pll_avivo - compute PLL paramaters
975 * @pll: information about the PLL
976 * @dot_clock_p: resulting pixel clock
977 * fb_div_p: resulting feedback divider
978 * frac_fb_div_p: fractional part of the feedback divider
979 * ref_div_p: resulting reference divider
980 * post_div_p: resulting reference divider
982 * Try to calculate the PLL parameters to generate the given frequency:
983 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
985 void radeon_compute_pll_avivo(struct radeon_pll *pll,
993 unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
996 unsigned fb_div_min, fb_div_max, fb_div;
997 unsigned post_div_min, post_div_max, post_div;
998 unsigned ref_div_min, ref_div_max, ref_div;
999 unsigned post_div_best, diff_best;
1002 /* determine allowed feedback divider range */
1003 fb_div_min = pll->min_feedback_div;
1004 fb_div_max = pll->max_feedback_div;
1006 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1011 /* determine allowed ref divider range */
1012 if (pll->flags & RADEON_PLL_USE_REF_DIV)
1013 ref_div_min = pll->reference_div;
1015 ref_div_min = pll->min_ref_div;
1017 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
1018 pll->flags & RADEON_PLL_USE_REF_DIV)
1019 ref_div_max = pll->reference_div;
1020 else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1021 /* fix for problems on RS880 */
1022 ref_div_max = min(pll->max_ref_div, 7u);
1024 ref_div_max = pll->max_ref_div;
1026 /* determine allowed post divider range */
1027 if (pll->flags & RADEON_PLL_USE_POST_DIV) {
1028 post_div_min = pll->post_div;
1029 post_div_max = pll->post_div;
1031 unsigned vco_min, vco_max;
1033 if (pll->flags & RADEON_PLL_IS_LCD) {
1034 vco_min = pll->lcd_pll_out_min;
1035 vco_max = pll->lcd_pll_out_max;
1037 vco_min = pll->pll_out_min;
1038 vco_max = pll->pll_out_max;
1041 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1046 post_div_min = vco_min / target_clock;
1047 if ((target_clock * post_div_min) < vco_min)
1049 if (post_div_min < pll->min_post_div)
1050 post_div_min = pll->min_post_div;
1052 post_div_max = vco_max / target_clock;
1053 if ((target_clock * post_div_max) > vco_max)
1055 if (post_div_max > pll->max_post_div)
1056 post_div_max = pll->max_post_div;
1059 /* represent the searched ratio as fractional number */
1061 den = pll->reference_freq;
1063 /* reduce the numbers to a simpler ratio */
1064 avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
1066 /* now search for a post divider */
1067 if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1068 post_div_best = post_div_min;
1070 post_div_best = post_div_max;
1073 for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
1075 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
1076 ref_div_max, &fb_div, &ref_div);
1077 diff = abs(target_clock - (pll->reference_freq * fb_div) /
1078 (ref_div * post_div));
1080 if (diff < diff_best || (diff == diff_best &&
1081 !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
1083 post_div_best = post_div;
1087 post_div = post_div_best;
1089 /* get the feedback and reference divider for the optimal value */
1090 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
1093 /* reduce the numbers to a simpler ratio once more */
1094 /* this also makes sure that the reference divider is large enough */
1095 avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
1097 /* avoid high jitter with small fractional dividers */
1098 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && (fb_div % 10)) {
1099 fb_div_min = max(fb_div_min, (9 - (fb_div % 10)) * 20 + 50);
1100 if (fb_div < fb_div_min) {
1101 unsigned tmp = DIV_ROUND_UP(fb_div_min, fb_div);
1107 /* and finally save the result */
1108 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1109 *fb_div_p = fb_div / 10;
1110 *frac_fb_div_p = fb_div % 10;
1116 *dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
1117 (pll->reference_freq * *frac_fb_div_p)) /
1118 (ref_div * post_div * 10);
1119 *ref_div_p = ref_div;
1120 *post_div_p = post_div;
1122 DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1123 freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
1128 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
1138 void radeon_compute_pll_legacy(struct radeon_pll *pll,
1140 uint32_t *dot_clock_p,
1142 uint32_t *frac_fb_div_p,
1143 uint32_t *ref_div_p,
1144 uint32_t *post_div_p)
1146 uint32_t min_ref_div = pll->min_ref_div;
1147 uint32_t max_ref_div = pll->max_ref_div;
1148 uint32_t min_post_div = pll->min_post_div;
1149 uint32_t max_post_div = pll->max_post_div;
1150 uint32_t min_fractional_feed_div = 0;
1151 uint32_t max_fractional_feed_div = 0;
1152 uint32_t best_vco = pll->best_vco;
1153 uint32_t best_post_div = 1;
1154 uint32_t best_ref_div = 1;
1155 uint32_t best_feedback_div = 1;
1156 uint32_t best_frac_feedback_div = 0;
1157 uint32_t best_freq = -1;
1158 uint32_t best_error = 0xffffffff;
1159 uint32_t best_vco_diff = 1;
1161 u32 pll_out_min, pll_out_max;
1163 DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
1166 if (pll->flags & RADEON_PLL_IS_LCD) {
1167 pll_out_min = pll->lcd_pll_out_min;
1168 pll_out_max = pll->lcd_pll_out_max;
1170 pll_out_min = pll->pll_out_min;
1171 pll_out_max = pll->pll_out_max;
1174 if (pll_out_min > 64800)
1175 pll_out_min = 64800;
1177 if (pll->flags & RADEON_PLL_USE_REF_DIV)
1178 min_ref_div = max_ref_div = pll->reference_div;
1180 while (min_ref_div < max_ref_div-1) {
1181 uint32_t mid = (min_ref_div + max_ref_div) / 2;
1182 uint32_t pll_in = pll->reference_freq / mid;
1183 if (pll_in < pll->pll_in_min)
1185 else if (pll_in > pll->pll_in_max)
1192 if (pll->flags & RADEON_PLL_USE_POST_DIV)
1193 min_post_div = max_post_div = pll->post_div;
1195 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1196 min_fractional_feed_div = pll->min_frac_feedback_div;
1197 max_fractional_feed_div = pll->max_frac_feedback_div;
1200 for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
1203 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
1206 /* legacy radeons only have a few post_divs */
1207 if (pll->flags & RADEON_PLL_LEGACY) {
1208 if ((post_div == 5) ||
1219 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
1220 uint32_t feedback_div, current_freq = 0, error, vco_diff;
1221 uint32_t pll_in = pll->reference_freq / ref_div;
1222 uint32_t min_feed_div = pll->min_feedback_div;
1223 uint32_t max_feed_div = pll->max_feedback_div + 1;
1225 if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
1228 while (min_feed_div < max_feed_div) {
1230 uint32_t min_frac_feed_div = min_fractional_feed_div;
1231 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
1232 uint32_t frac_feedback_div;
1235 feedback_div = (min_feed_div + max_feed_div) / 2;
1237 tmp = (uint64_t)pll->reference_freq * feedback_div;
1238 vco = radeon_div(tmp, ref_div);
1240 if (vco < pll_out_min) {
1241 min_feed_div = feedback_div + 1;
1243 } else if (vco > pll_out_max) {
1244 max_feed_div = feedback_div;
1248 while (min_frac_feed_div < max_frac_feed_div) {
1249 frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
1250 tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
1251 tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
1252 current_freq = radeon_div(tmp, ref_div * post_div);
1254 if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
1255 if (freq < current_freq)
1258 error = freq - current_freq;
1260 error = abs(current_freq - freq);
1261 vco_diff = abs(vco - best_vco);
1263 if ((best_vco == 0 && error < best_error) ||
1265 ((best_error > 100 && error < best_error - 100) ||
1266 (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1267 best_post_div = post_div;
1268 best_ref_div = ref_div;
1269 best_feedback_div = feedback_div;
1270 best_frac_feedback_div = frac_feedback_div;
1271 best_freq = current_freq;
1273 best_vco_diff = vco_diff;
1274 } else if (current_freq == freq) {
1275 if (best_freq == -1) {
1276 best_post_div = post_div;
1277 best_ref_div = ref_div;
1278 best_feedback_div = feedback_div;
1279 best_frac_feedback_div = frac_feedback_div;
1280 best_freq = current_freq;
1282 best_vco_diff = vco_diff;
1283 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1284 ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1285 ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1286 ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1287 ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1288 ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1289 best_post_div = post_div;
1290 best_ref_div = ref_div;
1291 best_feedback_div = feedback_div;
1292 best_frac_feedback_div = frac_feedback_div;
1293 best_freq = current_freq;
1295 best_vco_diff = vco_diff;
1298 if (current_freq < freq)
1299 min_frac_feed_div = frac_feedback_div + 1;
1301 max_frac_feed_div = frac_feedback_div;
1303 if (current_freq < freq)
1304 min_feed_div = feedback_div + 1;
1306 max_feed_div = feedback_div;
1311 *dot_clock_p = best_freq / 10000;
1312 *fb_div_p = best_feedback_div;
1313 *frac_fb_div_p = best_frac_feedback_div;
1314 *ref_div_p = best_ref_div;
1315 *post_div_p = best_post_div;
1316 DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1318 best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1319 best_ref_div, best_post_div);
1323 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
1325 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1327 if (radeon_fb->obj) {
1328 drm_gem_object_unreference_unlocked(radeon_fb->obj);
1330 drm_framebuffer_cleanup(fb);
1334 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
1335 struct drm_file *file_priv,
1336 unsigned int *handle)
1338 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1340 return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
1343 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1344 .destroy = radeon_user_framebuffer_destroy,
1345 .create_handle = radeon_user_framebuffer_create_handle,
1349 radeon_framebuffer_init(struct drm_device *dev,
1350 struct radeon_framebuffer *rfb,
1351 struct drm_mode_fb_cmd2 *mode_cmd,
1352 struct drm_gem_object *obj)
1356 drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
1357 ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
1365 static struct drm_framebuffer *
1366 radeon_user_framebuffer_create(struct drm_device *dev,
1367 struct drm_file *file_priv,
1368 struct drm_mode_fb_cmd2 *mode_cmd)
1370 struct drm_gem_object *obj;
1371 struct radeon_framebuffer *radeon_fb;
1374 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1376 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
1377 "can't create framebuffer\n", mode_cmd->handles[0]);
1378 return ERR_PTR(-ENOENT);
1381 /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
1382 if (obj->import_attach) {
1383 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
1384 return ERR_PTR(-EINVAL);
1387 radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
1388 if (radeon_fb == NULL) {
1389 drm_gem_object_unreference_unlocked(obj);
1390 return ERR_PTR(-ENOMEM);
1393 ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
1396 drm_gem_object_unreference_unlocked(obj);
1397 return ERR_PTR(ret);
1400 return &radeon_fb->base;
1403 static void radeon_output_poll_changed(struct drm_device *dev)
1405 struct radeon_device *rdev = dev->dev_private;
1406 radeon_fb_output_poll_changed(rdev);
1409 static const struct drm_mode_config_funcs radeon_mode_funcs = {
1410 .fb_create = radeon_user_framebuffer_create,
1411 .output_poll_changed = radeon_output_poll_changed
1414 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1419 static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1420 { { TV_STD_NTSC, "ntsc" },
1421 { TV_STD_PAL, "pal" },
1422 { TV_STD_PAL_M, "pal-m" },
1423 { TV_STD_PAL_60, "pal-60" },
1424 { TV_STD_NTSC_J, "ntsc-j" },
1425 { TV_STD_SCART_PAL, "scart-pal" },
1426 { TV_STD_PAL_CN, "pal-cn" },
1427 { TV_STD_SECAM, "secam" },
1430 static struct drm_prop_enum_list radeon_underscan_enum_list[] =
1431 { { UNDERSCAN_OFF, "off" },
1432 { UNDERSCAN_ON, "on" },
1433 { UNDERSCAN_AUTO, "auto" },
1436 static struct drm_prop_enum_list radeon_audio_enum_list[] =
1437 { { RADEON_AUDIO_DISABLE, "off" },
1438 { RADEON_AUDIO_ENABLE, "on" },
1439 { RADEON_AUDIO_AUTO, "auto" },
1442 /* XXX support different dither options? spatial, temporal, both, etc. */
1443 static struct drm_prop_enum_list radeon_dither_enum_list[] =
1444 { { RADEON_FMT_DITHER_DISABLE, "off" },
1445 { RADEON_FMT_DITHER_ENABLE, "on" },
1448 static struct drm_prop_enum_list radeon_output_csc_enum_list[] =
1449 { { RADEON_OUTPUT_CSC_BYPASS, "bypass" },
1450 { RADEON_OUTPUT_CSC_TVRGB, "tvrgb" },
1451 { RADEON_OUTPUT_CSC_YCBCR601, "ycbcr601" },
1452 { RADEON_OUTPUT_CSC_YCBCR709, "ycbcr709" },
1455 static int radeon_modeset_create_props(struct radeon_device *rdev)
1459 if (rdev->is_atom_bios) {
1460 rdev->mode_info.coherent_mode_property =
1461 drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1462 if (!rdev->mode_info.coherent_mode_property)
1466 if (!ASIC_IS_AVIVO(rdev)) {
1467 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
1468 rdev->mode_info.tmds_pll_property =
1469 drm_property_create_enum(rdev->ddev, 0,
1471 radeon_tmds_pll_enum_list, sz);
1474 rdev->mode_info.load_detect_property =
1475 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1476 if (!rdev->mode_info.load_detect_property)
1479 drm_mode_create_scaling_mode_property(rdev->ddev);
1481 sz = ARRAY_SIZE(radeon_tv_std_enum_list);
1482 rdev->mode_info.tv_std_property =
1483 drm_property_create_enum(rdev->ddev, 0,
1485 radeon_tv_std_enum_list, sz);
1487 sz = ARRAY_SIZE(radeon_underscan_enum_list);
1488 rdev->mode_info.underscan_property =
1489 drm_property_create_enum(rdev->ddev, 0,
1491 radeon_underscan_enum_list, sz);
1493 rdev->mode_info.underscan_hborder_property =
1494 drm_property_create_range(rdev->ddev, 0,
1495 "underscan hborder", 0, 128);
1496 if (!rdev->mode_info.underscan_hborder_property)
1499 rdev->mode_info.underscan_vborder_property =
1500 drm_property_create_range(rdev->ddev, 0,
1501 "underscan vborder", 0, 128);
1502 if (!rdev->mode_info.underscan_vborder_property)
1505 sz = ARRAY_SIZE(radeon_audio_enum_list);
1506 rdev->mode_info.audio_property =
1507 drm_property_create_enum(rdev->ddev, 0,
1509 radeon_audio_enum_list, sz);
1511 sz = ARRAY_SIZE(radeon_dither_enum_list);
1512 rdev->mode_info.dither_property =
1513 drm_property_create_enum(rdev->ddev, 0,
1515 radeon_dither_enum_list, sz);
1517 sz = ARRAY_SIZE(radeon_output_csc_enum_list);
1518 rdev->mode_info.output_csc_property =
1519 drm_property_create_enum(rdev->ddev, 0,
1521 radeon_output_csc_enum_list, sz);
1526 void radeon_update_display_priority(struct radeon_device *rdev)
1528 /* adjustment options for the display watermarks */
1529 if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1530 /* set display priority to high for r3xx, rv515 chips
1531 * this avoids flickering due to underflow to the
1532 * display controllers during heavy acceleration.
1533 * Don't force high on rs4xx igp chips as it seems to
1534 * affect the sound card. See kernel bug 15982.
1536 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1537 !(rdev->flags & RADEON_IS_IGP))
1538 rdev->disp_priority = 2;
1540 rdev->disp_priority = 0;
1542 rdev->disp_priority = radeon_disp_priority;
1547 * Allocate hdmi structs and determine register offsets
1549 static void radeon_afmt_init(struct radeon_device *rdev)
1553 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1554 rdev->mode_info.afmt[i] = NULL;
1556 if (ASIC_IS_NODCE(rdev)) {
1558 } else if (ASIC_IS_DCE4(rdev)) {
1559 static uint32_t eg_offsets[] = {
1560 EVERGREEN_CRTC0_REGISTER_OFFSET,
1561 EVERGREEN_CRTC1_REGISTER_OFFSET,
1562 EVERGREEN_CRTC2_REGISTER_OFFSET,
1563 EVERGREEN_CRTC3_REGISTER_OFFSET,
1564 EVERGREEN_CRTC4_REGISTER_OFFSET,
1565 EVERGREEN_CRTC5_REGISTER_OFFSET,
1570 /* DCE8 has 7 audio blocks tied to DIG encoders */
1571 /* DCE6 has 6 audio blocks tied to DIG encoders */
1572 /* DCE4/5 has 6 audio blocks tied to DIG encoders */
1573 /* DCE4.1 has 2 audio blocks tied to DIG encoders */
1574 if (ASIC_IS_DCE8(rdev))
1576 else if (ASIC_IS_DCE6(rdev))
1578 else if (ASIC_IS_DCE5(rdev))
1580 else if (ASIC_IS_DCE41(rdev))
1585 BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
1586 for (i = 0; i < num_afmt; i++) {
1587 rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1588 if (rdev->mode_info.afmt[i]) {
1589 rdev->mode_info.afmt[i]->offset = eg_offsets[i];
1590 rdev->mode_info.afmt[i]->id = i;
1593 } else if (ASIC_IS_DCE3(rdev)) {
1594 /* DCE3.x has 2 audio blocks tied to DIG encoders */
1595 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1596 if (rdev->mode_info.afmt[0]) {
1597 rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1598 rdev->mode_info.afmt[0]->id = 0;
1600 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1601 if (rdev->mode_info.afmt[1]) {
1602 rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1603 rdev->mode_info.afmt[1]->id = 1;
1605 } else if (ASIC_IS_DCE2(rdev)) {
1606 /* DCE2 has at least 1 routable audio block */
1607 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1608 if (rdev->mode_info.afmt[0]) {
1609 rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1610 rdev->mode_info.afmt[0]->id = 0;
1612 /* r6xx has 2 routable audio blocks */
1613 if (rdev->family >= CHIP_R600) {
1614 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1615 if (rdev->mode_info.afmt[1]) {
1616 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1617 rdev->mode_info.afmt[1]->id = 1;
1623 static void radeon_afmt_fini(struct radeon_device *rdev)
1627 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1628 kfree(rdev->mode_info.afmt[i]);
1629 rdev->mode_info.afmt[i] = NULL;
1633 int radeon_modeset_init(struct radeon_device *rdev)
1638 drm_mode_config_init(rdev->ddev);
1639 rdev->mode_info.mode_config_initialized = true;
1641 rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1643 if (ASIC_IS_DCE5(rdev)) {
1644 rdev->ddev->mode_config.max_width = 16384;
1645 rdev->ddev->mode_config.max_height = 16384;
1646 } else if (ASIC_IS_AVIVO(rdev)) {
1647 rdev->ddev->mode_config.max_width = 8192;
1648 rdev->ddev->mode_config.max_height = 8192;
1650 rdev->ddev->mode_config.max_width = 4096;
1651 rdev->ddev->mode_config.max_height = 4096;
1654 rdev->ddev->mode_config.preferred_depth = 24;
1655 rdev->ddev->mode_config.prefer_shadow = 1;
1657 rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1659 ret = radeon_modeset_create_props(rdev);
1664 /* init i2c buses */
1665 radeon_i2c_init(rdev);
1667 /* check combios for a valid hardcoded EDID - Sun servers */
1668 if (!rdev->is_atom_bios) {
1669 /* check for hardcoded EDID in BIOS */
1670 radeon_combios_check_hardcoded_edid(rdev);
1673 /* allocate crtcs */
1674 for (i = 0; i < rdev->num_crtc; i++) {
1675 radeon_crtc_init(rdev->ddev, i);
1678 /* okay we should have all the bios connectors */
1679 ret = radeon_setup_enc_conn(rdev->ddev);
1684 /* init dig PHYs, disp eng pll */
1685 if (rdev->is_atom_bios) {
1686 radeon_atom_encoder_init(rdev);
1687 radeon_atom_disp_eng_pll_init(rdev);
1690 /* initialize hpd */
1691 radeon_hpd_init(rdev);
1694 radeon_afmt_init(rdev);
1696 radeon_fbdev_init(rdev);
1697 drm_kms_helper_poll_init(rdev->ddev);
1699 /* do pm late init */
1700 ret = radeon_pm_late_init(rdev);
1705 void radeon_modeset_fini(struct radeon_device *rdev)
1707 radeon_fbdev_fini(rdev);
1708 kfree(rdev->mode_info.bios_hardcoded_edid);
1710 if (rdev->mode_info.mode_config_initialized) {
1711 radeon_afmt_fini(rdev);
1712 drm_kms_helper_poll_fini(rdev->ddev);
1713 radeon_hpd_fini(rdev);
1714 drm_mode_config_cleanup(rdev->ddev);
1715 rdev->mode_info.mode_config_initialized = false;
1717 /* free i2c buses */
1718 radeon_i2c_fini(rdev);
1721 static bool is_hdtv_mode(const struct drm_display_mode *mode)
1723 /* try and guess if this is a tv or a monitor */
1724 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1725 (mode->vdisplay == 576) || /* 576p */
1726 (mode->vdisplay == 720) || /* 720p */
1727 (mode->vdisplay == 1080)) /* 1080p */
1733 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1734 const struct drm_display_mode *mode,
1735 struct drm_display_mode *adjusted_mode)
1737 struct drm_device *dev = crtc->dev;
1738 struct radeon_device *rdev = dev->dev_private;
1739 struct drm_encoder *encoder;
1740 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1741 struct radeon_encoder *radeon_encoder;
1742 struct drm_connector *connector;
1743 struct radeon_connector *radeon_connector;
1745 u32 src_v = 1, dst_v = 1;
1746 u32 src_h = 1, dst_h = 1;
1748 radeon_crtc->h_border = 0;
1749 radeon_crtc->v_border = 0;
1751 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1752 if (encoder->crtc != crtc)
1754 radeon_encoder = to_radeon_encoder(encoder);
1755 connector = radeon_get_connector_for_encoder(encoder);
1756 radeon_connector = to_radeon_connector(connector);
1760 if (radeon_encoder->rmx_type == RMX_OFF)
1761 radeon_crtc->rmx_type = RMX_OFF;
1762 else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1763 mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1764 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1766 radeon_crtc->rmx_type = RMX_OFF;
1767 /* copy native mode */
1768 memcpy(&radeon_crtc->native_mode,
1769 &radeon_encoder->native_mode,
1770 sizeof(struct drm_display_mode));
1771 src_v = crtc->mode.vdisplay;
1772 dst_v = radeon_crtc->native_mode.vdisplay;
1773 src_h = crtc->mode.hdisplay;
1774 dst_h = radeon_crtc->native_mode.hdisplay;
1776 /* fix up for overscan on hdmi */
1777 if (ASIC_IS_AVIVO(rdev) &&
1778 (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1779 ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1780 ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1781 drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
1782 is_hdtv_mode(mode)))) {
1783 if (radeon_encoder->underscan_hborder != 0)
1784 radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1786 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1787 if (radeon_encoder->underscan_vborder != 0)
1788 radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1790 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1791 radeon_crtc->rmx_type = RMX_FULL;
1792 src_v = crtc->mode.vdisplay;
1793 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1794 src_h = crtc->mode.hdisplay;
1795 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1799 if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1800 /* WARNING: Right now this can't happen but
1801 * in the future we need to check that scaling
1802 * are consistent across different encoder
1803 * (ie all encoder can work with the same
1806 DRM_ERROR("Scaling not consistent across encoder.\n");
1811 if (radeon_crtc->rmx_type != RMX_OFF) {
1813 a.full = dfixed_const(src_v);
1814 b.full = dfixed_const(dst_v);
1815 radeon_crtc->vsc.full = dfixed_div(a, b);
1816 a.full = dfixed_const(src_h);
1817 b.full = dfixed_const(dst_h);
1818 radeon_crtc->hsc.full = dfixed_div(a, b);
1820 radeon_crtc->vsc.full = dfixed_const(1);
1821 radeon_crtc->hsc.full = dfixed_const(1);
1827 * Retrieve current video scanout position of crtc on a given gpu, and
1828 * an optional accurate timestamp of when query happened.
1830 * \param dev Device to query.
1831 * \param crtc Crtc to query.
1832 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
1833 * For driver internal use only also supports these flags:
1835 * USE_REAL_VBLANKSTART to use the real start of vblank instead
1836 * of a fudged earlier start of vblank.
1838 * GET_DISTANCE_TO_VBLANKSTART to return distance to the
1839 * fudged earlier start of vblank in *vpos and the distance
1840 * to true start of vblank in *hpos.
1842 * \param *vpos Location where vertical scanout position should be stored.
1843 * \param *hpos Location where horizontal scanout position should go.
1844 * \param *stime Target location for timestamp taken immediately before
1845 * scanout position query. Can be NULL to skip timestamp.
1846 * \param *etime Target location for timestamp taken immediately after
1847 * scanout position query. Can be NULL to skip timestamp.
1849 * Returns vpos as a positive number while in active scanout area.
1850 * Returns vpos as a negative number inside vblank, counting the number
1851 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1852 * until start of active scanout / end of vblank."
1854 * \return Flags, or'ed together as follows:
1856 * DRM_SCANOUTPOS_VALID = Query successful.
1857 * DRM_SCANOUTPOS_INVBL = Inside vblank.
1858 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1859 * this flag means that returned position may be offset by a constant but
1860 * unknown small number of scanlines wrt. real scanout position.
1863 int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
1864 unsigned int flags, int *vpos, int *hpos,
1865 ktime_t *stime, ktime_t *etime,
1866 const struct drm_display_mode *mode)
1868 u32 stat_crtc = 0, vbl = 0, position = 0;
1869 int vbl_start, vbl_end, vtotal, ret = 0;
1872 struct radeon_device *rdev = dev->dev_private;
1874 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
1876 /* Get optional system timestamp before query. */
1878 *stime = ktime_get();
1880 if (ASIC_IS_DCE4(rdev)) {
1882 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1883 EVERGREEN_CRTC0_REGISTER_OFFSET);
1884 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1885 EVERGREEN_CRTC0_REGISTER_OFFSET);
1886 ret |= DRM_SCANOUTPOS_VALID;
1889 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1890 EVERGREEN_CRTC1_REGISTER_OFFSET);
1891 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1892 EVERGREEN_CRTC1_REGISTER_OFFSET);
1893 ret |= DRM_SCANOUTPOS_VALID;
1896 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1897 EVERGREEN_CRTC2_REGISTER_OFFSET);
1898 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1899 EVERGREEN_CRTC2_REGISTER_OFFSET);
1900 ret |= DRM_SCANOUTPOS_VALID;
1903 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1904 EVERGREEN_CRTC3_REGISTER_OFFSET);
1905 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1906 EVERGREEN_CRTC3_REGISTER_OFFSET);
1907 ret |= DRM_SCANOUTPOS_VALID;
1910 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1911 EVERGREEN_CRTC4_REGISTER_OFFSET);
1912 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1913 EVERGREEN_CRTC4_REGISTER_OFFSET);
1914 ret |= DRM_SCANOUTPOS_VALID;
1917 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1918 EVERGREEN_CRTC5_REGISTER_OFFSET);
1919 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1920 EVERGREEN_CRTC5_REGISTER_OFFSET);
1921 ret |= DRM_SCANOUTPOS_VALID;
1923 } else if (ASIC_IS_AVIVO(rdev)) {
1925 vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1926 position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1927 ret |= DRM_SCANOUTPOS_VALID;
1930 vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1931 position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1932 ret |= DRM_SCANOUTPOS_VALID;
1935 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1937 /* Assume vbl_end == 0, get vbl_start from
1940 vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1941 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1942 /* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1943 position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1944 stat_crtc = RREG32(RADEON_CRTC_STATUS);
1945 if (!(stat_crtc & 1))
1948 ret |= DRM_SCANOUTPOS_VALID;
1951 vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1952 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1953 position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1954 stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1955 if (!(stat_crtc & 1))
1958 ret |= DRM_SCANOUTPOS_VALID;
1962 /* Get optional system timestamp after query. */
1964 *etime = ktime_get();
1966 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
1968 /* Decode into vertical and horizontal scanout position. */
1969 *vpos = position & 0x1fff;
1970 *hpos = (position >> 16) & 0x1fff;
1972 /* Valid vblank area boundaries from gpu retrieved? */
1975 ret |= DRM_SCANOUTPOS_ACCURATE;
1976 vbl_start = vbl & 0x1fff;
1977 vbl_end = (vbl >> 16) & 0x1fff;
1980 /* No: Fake something reasonable which gives at least ok results. */
1981 vbl_start = mode->crtc_vdisplay;
1985 /* Called from driver internal vblank counter query code? */
1986 if (flags & GET_DISTANCE_TO_VBLANKSTART) {
1987 /* Caller wants distance from real vbl_start in *hpos */
1988 *hpos = *vpos - vbl_start;
1991 /* Fudge vblank to start a few scanlines earlier to handle the
1992 * problem that vblank irqs fire a few scanlines before start
1993 * of vblank. Some driver internal callers need the true vblank
1994 * start to be used and signal this via the USE_REAL_VBLANKSTART flag.
1996 * The cause of the "early" vblank irq is that the irq is triggered
1997 * by the line buffer logic when the line buffer read position enters
1998 * the vblank, whereas our crtc scanout position naturally lags the
1999 * line buffer read position.
2001 if (!(flags & USE_REAL_VBLANKSTART))
2002 vbl_start -= rdev->mode_info.crtcs[pipe]->lb_vblank_lead_lines;
2004 /* Test scanout position against vblank region. */
2005 if ((*vpos < vbl_start) && (*vpos >= vbl_end))
2010 ret |= DRM_SCANOUTPOS_IN_VBLANK;
2012 /* Called from driver internal vblank counter query code? */
2013 if (flags & GET_DISTANCE_TO_VBLANKSTART) {
2014 /* Caller wants distance from fudged earlier vbl_start */
2019 /* Check if inside vblank area and apply corrective offsets:
2020 * vpos will then be >=0 in video scanout area, but negative
2021 * within vblank area, counting down the number of lines until
2025 /* Inside "upper part" of vblank area? Apply corrective offset if so: */
2026 if (in_vbl && (*vpos >= vbl_start)) {
2027 vtotal = mode->crtc_vtotal;
2028 *vpos = *vpos - vtotal;
2031 /* Correct for shifted end of vbl at vbl_end. */
2032 *vpos = *vpos - vbl_end;