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| author | David Francis <David.Francis@amd.com> | 2019-06-19 14:48:16 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-09 18:07:47 -0500 |
| commit | f9c8742c66e4b8180db4085555ace9f0775221ae (patch) | |
| tree | 8339223f56f548a2b41f56bf032e5e3f11a93cce | |
| parent | ec0ca697dd0e573657d7070d1d392faba44acd4d (diff) | |
| download | linux-f9c8742c66e4b8180db4085555ace9f0775221ae.tar.bz2 | |
drm/amd/display: Write DSC enable to MST DPCD
Rework the dm_helpers_write_dsc_enable callback to
handle the MST case.
Use the cached dsc_aux field.
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 66f266a5e10b..069b7a6f5597 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -37,6 +37,7 @@ #include "dc.h" #include "amdgpu_dm.h" #include "amdgpu_dm_irq.h" +#include "amdgpu_dm_mst_types.h" #include "dm_helpers.h" @@ -516,8 +517,24 @@ bool dm_helpers_dp_write_dsc_enable( ) { uint8_t enable_dsc = enable ? 1 : 0; + struct amdgpu_dm_connector *aconnector; + + if (!stream) + return false; + + if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { + aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; + + if (!aconnector->dsc_aux) + return false; + + return (drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1) >= 0); + } + + if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT) + return dm_helpers_dp_write_dpcd(ctx, stream->link, DP_DSC_ENABLE, &enable_dsc, 1); - return dm_helpers_dp_write_dpcd(ctx, stream->sink->link, DP_DSC_ENABLE, &enable_dsc, 1); + return false; } bool dm_helpers_is_dp_sink_present(struct dc_link *link) |