From: Hugo Hu <hugo.hu@xxxxxxx>
[why]
We hit an issue which driver reallocate a pipe from desktop bottom
pipe to video bottom pipe. In this case, driver need to re-enable
plane.
[how]
Enable plane if container of plane status changed.
Signed-off-by: Hugo Hu <hugo.hu@xxxxxxx>
Reviewed-by: Tony Cheng <Tony.Cheng@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
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 223e314d26b4..13183bd7ea0f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1160,13 +1160,20 @@ void dcn20_pipe_control_lock(
static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx *new_pipe)
{
+ bool plane_state_update = false;
new_pipe->update_flags.raw = 0;
/* Exit on unchanged, unused pipe */
if (!old_pipe->plane_state && !new_pipe->plane_state)
return;
+
+ /* Detect plane state update */
+ if (old_pipe->plane_state && new_pipe->plane_state
+ && (old_pipe->plane_state != new_pipe->plane_state)) {
+ plane_state_update = true;
+ }
/* Detect pipe enable/disable */
- if (!old_pipe->plane_state && new_pipe->plane_state) {
+ if ((!old_pipe->plane_state && new_pipe->plane_state) || plane_state_update) {
new_pipe->update_flags.bits.enable = 1;
new_pipe->update_flags.bits.mpcc = 1;
new_pipe->update_flags.bits.dppclk = 1;
--
2.17.1
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