diff options
| author | Michel Dänzer <michel.daenzer@amd.com> | 2016-04-01 18:51:34 +0900 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-05-04 20:19:03 -0400 |
| commit | c63dd758589b1f7e8398841d1f443f06ebfbcefc (patch) | |
| tree | 8dd086669a8d3dd74f8bab0b8e4def9e5e3b08ae /drivers/gpu/drm/radeon/rs600.c | |
| parent | a4333b4c9960a8f8d699910d4ae11c5eaefd8c25 (diff) | |
drm/radeon: Support DRM_MODE_PAGE_FLIP_ASYNC
When this flag is set, we program the hardware to execute the flip
during horizontal blank (i.e. for the next scanline) instead of during
vertical blank (i.e. for the next frame).
Currently this is only supported on ASICs which have a page flip
completion interrupt (>= R600), and only if the use_pflipirq parameter
has value 2 (the default).
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/rs600.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/rs600.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index 0051c4288725..f16af119c688 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -110,7 +110,7 @@ void avivo_wait_for_vblank(struct radeon_device *rdev, int crtc) } } -void rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) +void rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base, bool async) { struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset); @@ -121,6 +121,8 @@ void rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) WREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset, tmp); /* update the scanout addresses */ + WREG32(AVIVO_D1GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset, + async ? AVIVO_D1GRPH_SURFACE_UPDATE_H_RETRACE_EN : 0); WREG32(AVIVO_D1GRPH_SECONDARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset, (u32)crtc_base); WREG32(AVIVO_D1GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset, |