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| author | Alvin Lee <alvin.lee2@amd.com> | 2019-06-24 09:49:44 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-07-18 14:17:19 -0500 |
| commit | 39fee5f60ce069cfba55fc3a8ba55faacae330b9 (patch) | |
| tree | a446afb261d32d0a4cd306ec4d520240ca735c24 /drivers/gpu | |
| parent | 09fc26c1718fe7a552866d4eda84e2cc5f9c9c78 (diff) | |
| download | linux-39fee5f60ce069cfba55fc3a8ba55faacae330b9.tar.gz linux-39fee5f60ce069cfba55fc3a8ba55faacae330b9.tar.bz2 linux-39fee5f60ce069cfba55fc3a8ba55faacae330b9.zip | |
drm/amd/display: Wait for flip to complete
[why]
In pipe split issue occurs when we program immediate flip while vsync flip is pending
[how]
Don't program immediate flip until flip is no longer pending
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jaehyun Chung <Jaehyun.Chung@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index e5e78aa930a6..d810c8940129 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1265,6 +1265,17 @@ void dcn20_pipe_control_lock( if (pipe->plane_state != NULL) flip_immediate = pipe->plane_state->flip_immediate; + if (flip_immediate && lock) { + while (pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->plane_res.hubp)) { + udelay(1); + } + + if (pipe->bottom_pipe != NULL) + while (pipe->bottom_pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->bottom_pipe->plane_res.hubp)) { + udelay(1); + } + } + /* In flip immediate and pipe splitting case, we need to use GSL * for synchronization. Only do setup on locking and on flip type change. */ |