diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_display.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_display.c | 61 |
1 files changed, 39 insertions, 22 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 890171f08987..cdb8cb568c15 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -321,16 +321,30 @@ void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id) update_pending = radeon_page_flip_pending(rdev, crtc_id); /* Has the pageflip already completed in crtc, or is it certain - * to complete in this vblank? + * to complete in this vblank? GET_DISTANCE_TO_VBLANKSTART provides + * distance to start of "fudged earlier" vblank in vpos, distance to + * start of real vblank in hpos. vpos >= 0 && hpos < 0 means we are in + * the last few scanlines before start of real vblank, where the vblank + * irq can fire, so we have sampled update_pending a bit too early and + * know the flip will complete at leading edge of the upcoming real + * vblank. On pre-AVIVO hardware, flips also complete inside the real + * vblank, not only at leading edge, so if update_pending for hpos >= 0 + * == inside real vblank, the flip will complete almost immediately. + * Note that this method of completion handling is still not 100% race + * free, as we could execute before the radeon_flip_work_func managed + * to run and set the RADEON_FLIP_SUBMITTED status, thereby we no-op, + * but the flip still gets programmed into hw and completed during + * vblank, leading to a delayed emission of the flip completion event. + * This applies at least to pre-AVIVO hardware, where flips are always + * completing inside vblank, not only at leading edge of vblank. */ if (update_pending && - (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, - crtc_id, - USE_REAL_VBLANKSTART, - &vpos, &hpos, NULL, NULL, - &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) && - ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) || - (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) { + (DRM_SCANOUTPOS_VALID & + radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id, + GET_DISTANCE_TO_VBLANKSTART, + &vpos, &hpos, NULL, NULL, + &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) && + ((vpos >= 0 && hpos < 0) || (hpos >= 0 && !ASIC_IS_AVIVO(rdev)))) { /* crtc didn't flip in this target vblank interval, * but flip is pending in crtc. Based on the current * scanout position we know that the current frame is @@ -438,16 +452,19 @@ static void radeon_flip_work_func(struct work_struct *__work) } /* Wait until we're out of the vertical blank period before the one - * targeted by the flip + * targeted by the flip. Always wait on pre DCE4 to avoid races with + * flip completion handling from vblank irq, as these old asics don't + * have reliable pageflip completion interrupts. */ while (radeon_crtc->enabled && - (radeon_get_crtc_scanoutpos(dev, work->crtc_id, 0, - &vpos, &hpos, NULL, NULL, - &crtc->hwmode) + (radeon_get_crtc_scanoutpos(dev, work->crtc_id, 0, + &vpos, &hpos, NULL, NULL, + &crtc->hwmode) & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK)) == - (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK) && - (int)(work->target_vblank - - dev->driver->get_vblank_counter(dev, work->crtc_id)) > 0) + (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK) && + (!ASIC_IS_AVIVO(rdev) || + ((int) (work->target_vblank - + dev->driver->get_vblank_counter(dev, work->crtc_id)) > 0))) usleep_range(1000, 2000); /* We borrow the event spin lock for protecting flip_status */ @@ -1658,20 +1675,20 @@ int radeon_modeset_init(struct radeon_device *rdev) void radeon_modeset_fini(struct radeon_device *rdev) { - radeon_fbdev_fini(rdev); - kfree(rdev->mode_info.bios_hardcoded_edid); - - /* free i2c buses */ - radeon_i2c_fini(rdev); - if (rdev->mode_info.mode_config_initialized) { - radeon_afmt_fini(rdev); drm_kms_helper_poll_fini(rdev->ddev); radeon_hpd_fini(rdev); drm_crtc_force_disable_all(rdev->ddev); + radeon_fbdev_fini(rdev); + radeon_afmt_fini(rdev); drm_mode_config_cleanup(rdev->ddev); rdev->mode_info.mode_config_initialized = false; } + + kfree(rdev->mode_info.bios_hardcoded_edid); + + /* free i2c buses */ + radeon_i2c_fini(rdev); } static bool is_hdtv_mode(const struct drm_display_mode *mode) |