From: David Francis <david.fran...@amd.com>
Rework the dm_helpers_write_dsc_enable callback to
handle the MST case.
Use the cached dsc_aux field.
Reviewed-by: Wenjing Liu <wenjing....@amd.com>
Signed-off-by: David Francis <david.fran...@amd.com>
---
.../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
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 aaf3158534ab..a83d7da259fe 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
@@ -38,6 +38,7 @@
#include "dc.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_irq.h"
+#include "amdgpu_dm_mst_types.h"
#include "dm_helpers.h"
@@ -557,8 +558,24 @@ 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;
}
#endif
--
2.17.1
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