diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3056-drm-amd-display-Wait-for-flip-to-complete.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3056-drm-amd-display-Wait-for-flip-to-complete.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3056-drm-amd-display-Wait-for-flip-to-complete.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3056-drm-amd-display-Wait-for-flip-to-complete.patch new file mode 100644 index 00000000..a9b13be5 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3056-drm-amd-display-Wait-for-flip-to-complete.patch @@ -0,0 +1,43 @@ +From b713b48f76896f3c7bc345888bb1be0a869b1389 Mon Sep 17 00:00:00 2001 +From: Alvin Lee <alvin.lee2@amd.com> +Date: Mon, 24 Jun 2019 09:49:44 -0400 +Subject: [PATCH 3056/4256] 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> +--- + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 11 +++++++++++ + 1 file changed, 11 insertions(+) + +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 b753e40c4196..b089ba1c7614 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +@@ -1285,6 +1285,17 @@ 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. + */ +-- +2.17.1 + |