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drm/amd/display: enable plane if container of plane_status changed 

[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@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hugo Hu 2020-05-13 16:36:28 +08:00 committed by Alex Deucher
parent 84034ad4c0
commit fd0293dd5b
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
View File

@ -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;