xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/radeon: Support DRM_MODE_PAGE_FLIP_ASYNC

Browse Source 
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>
This commit is contained in:
Michel Dänzer
2016-04-01 18:51:34 +09:00
committed by Alex Deucher
parent a4333b4c99
commit c63dd75858
8 changed files with 35 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/radeon/rv770.c
View File

@@ -801,7 +801,7 @@ u32 rv770_get_xclk(struct radeon_device *rdev)
return reference_clock;
}
void rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
void rv770_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);
@@ -812,6 +812,8 @@ void rv770_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);
if (radeon_crtc->crtc_id) {
WREG32(D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
WREG32(D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));