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drm/amd/display: Write DSC enable to MST DPCD

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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>
This commit is contained in:
David Francis
2019-06-19 14:48:16 -04:00
committed by Alex Deucher
parent ec0ca697dd
commit f9c8742c66
1 changed files with 18 additions and 1 deletions
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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+18 -1
View File
@@ -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;
return dm_helpers_dp_write_dpcd(ctx, stream->sink->link, DP_DSC_ENABLE, &enable_dsc, 1);
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 false;
}
bool dm_helpers_is_dp_sink_present(struct dc_link *link)