From bd4c72d1e9dd7efdb9a990225f32e0130c0884af Mon Sep 17 00:00:00 2001 From: Andrey Grodzovsky Date: Wed, 30 Mar 2016 17:34:27 -0400 Subject: [PATCH] drm/amdgpu: Set PFLIP_SUBMITTED for crtc after address update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Also add some pflip debug prints. This change allows us to wait on pflip status until the new surface address is actually submitted to the register. This reverts ed3020e923240829dcdfd3343f6e91dc02c63775 drm/amdgpu: Move MMIO flip out of spinlocked region The original change assumed DAL will aquire locks inside DAL implemetion of page_flip callback which eventaully didn't happen. This moves the flip before status update which makes sense for the non-DAL code pathes as well. Signed-off-by: Andrey Grodzovsky Reviewed-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 3fb405b3a614..0535095c4d14 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -131,12 +131,17 @@ static void amdgpu_flip_work_func(struct work_struct *__work) vblank->framedur_ns / 1000, vblank->linedur_ns / 1000, stat, vpos, hpos); - /* set the flip status */ + /* Do the flip (mmio) */ + adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base); + + /* Set the flip status */ amdgpuCrtc->pflip_status = AMDGPU_FLIP_SUBMITTED; spin_unlock_irqrestore(&crtc->dev->event_lock, flags); - /* Do the flip (mmio) */ - adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base); + + DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: %p,\n", + amdgpuCrtc->crtc_id, amdgpuCrtc, work); + } /* @@ -252,6 +257,9 @@ int amdgpu_crtc_page_flip(struct drm_crtc *crtc, amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING; amdgpu_crtc->pflip_works = work; + + DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work: %p,\n", + amdgpu_crtc->crtc_id, amdgpu_crtc, work); /* update crtc fb */ crtc->primary->fb = fb; spin_unlock_irqrestore(&crtc->dev->event_lock, flags); -- GitLab