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drm/amd/display: Skip Invalid Streams from DSC Policy

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit 9afeda04964281e9f708b92c2a9c4f8a1387b46e ]

Streams with invalid new connector state should be elimiated from
dsc policy.

Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[koichiroden: adjusted context due to missing commit:
3715112c1b35 ("drm/amd/display: Add DSC Debug Log")]
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Fangzhi Zuo
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 8710b689ff
commit 79a4ab47c5
1 changed files with 11 additions and 0 deletions
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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+11
View File
@@ -1100,6 +1100,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
int i, k, ret;
bool debugfs_overwrite = false;
uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link);
struct drm_connector_state *new_conn_state;
memset(params, 0, sizeof(params));
@@ -1122,6 +1123,14 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
if (!aconnector->mst_output_port)
continue;
new_conn_state = drm_atomic_get_new_connector_state(state, &aconnector->base);
if (!new_conn_state) {
DRM_DEBUG_DRIVER("%s:%d MST_DSC Skip the stream 0x%p with invalid new_conn_state\n",
__func__, __LINE__, stream);
continue;
}
stream->timing.flags.DSC = 0;
params[count].timing = &stream->timing;
@@ -1151,6 +1160,8 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
count++;
}
DRM_DEBUG_DRIVER("%s: MST_DSC Params set up for %d streams\n", __func__, count);
if (count == 0) {
ASSERT(0);
return 0;