diff options
| author |   Xiaodong Yan <Xiaodong.Yan@amd.com> | 2020-04-05 16:40:46 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-04-09 10:43:16 -0400 |
| commit | c5f5b9d934ba897182ba7159f4d1f1ff06234e3e (patch) | |
| tree | fd2af151279ab55546e18c21e033eacabbd04c1d | |
| parent | drm/amd/display: Power down hw blocks on boot (diff) | |
drm/amd/display: blank dp stream before power off receiver
[why]
power off dp receiver directly cause garbage during hw init
[how]
blank dp stream and then power off receiver
Signed-off-by: Xiaodong Yan <Xiaodong.Yan@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index dad95f1a7041..079a33a96f90 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1328,6 +1328,14 @@ void dcn10_init_hw(struct dc *dc) uint8_t dpcd_power_state = '\0'; enum dc_status status = DC_ERROR_UNEXPECTED; + /* blank all dp streams before power off receiver, + * this should only impact DP + */ + for (i = 0; i < dc->res_pool->stream_enc_count; i++) { + dc->res_pool->stream_enc[i]->funcs->dp_blank( + dc->res_pool->stream_enc[i]); + } + for (i = 0; i < dc->link_count; i++) { if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) continue; |