When primary bo is updated, crtc's pitch may
have not been updated, this will lead to show
disorder content when user changes display mode,
we update crtc's pitch in page flip to avoid
this bug.
This refers to amdgpu's pageflip.
Cc: Alex Deucher <[email protected]>
Cc: "Christian König" <[email protected]>
Cc: "Pan, Xinhui" <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Zhenneng Li <[email protected]>
---
drivers/gpu/drm/radeon/evergreen.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c
b/drivers/gpu/drm/radeon/evergreen.c
index 36a888e1b179..eeb590d2dec2 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -28,6 +28,7 @@
#include <drm/drm_vblank.h>
#include <drm/radeon_drm.h>
+#include <drm/drm_fourcc.h>
#include "atom.h"
#include "avivod.h"
@@ -1414,10 +1415,15 @@ void evergreen_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];
+ struct drm_framebuffer *fb = radeon_crtc->base.primary->fb;
- /* update the scanout addresses */
+ /* flip at hsync for async, default is vsync */
WREG32(EVERGREEN_GRPH_FLIP_CONTROL + radeon_crtc->crtc_offset,
async ? EVERGREEN_GRPH_SURFACE_UPDATE_H_RETRACE_EN : 0);
+ /* update pitch */
+ WREG32(EVERGREEN_GRPH_PITCH + radeon_crtc->crtc_offset,
+ fb->pitches[0] / fb->format->cpp[0]);
+ /* update the scanout addresses */
WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH +
radeon_crtc->crtc_offset,
upper_32_bits(crtc_base));
WREG32(EVERGREEN_GRPH_PRIMARY_SURFACE_ADDRESS +
radeon_crtc->crtc_offset,
--
2.25.1
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