diff options
| author | Timur Kristóf <timur.kristof@gmail.com> | 2026-01-26 22:08:26 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-02-18 10:41:34 -0500 |
| commit | 17ff034f805e032ed1358624a71381f9d6e29e9e (patch) | |
| tree | 92dd01096827e9df7cf810d52ad19a2e19776d54 /drivers/gpu | |
| parent | f402898bd101af3166bde236b7f6a43d926e17a0 (diff) | |
drm/amd/display: Only use analog stream encoder with analog engine
Some GPUs have analog connectors that work with a DP bridge chip
and don't actually have an internal DAC: Those should not use
the analog stream encoders.
Fixes: 5834c33fd3f6 ("drm/amd/display: Add concept of analog encoders (v2)")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c index 864634e14de1..f49d67fcafe0 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c @@ -979,7 +979,10 @@ struct stream_encoder *dce100_find_first_free_match_stream_enc_for_link( struct dc_link *link = stream->link; enum engine_id preferred_engine = link->link_enc->preferred_engine; - if (dc_is_rgb_signal(stream->signal)) + /* Prefer analog engine if the link encoder has one. + * Otherwise, it's an external encoder. + */ + if (dc_is_rgb_signal(stream->signal) && link->link_enc->analog_engine != ENGINE_ID_UNKNOWN) preferred_engine = link->link_enc->analog_engine; for (i = 0; i < pool->stream_enc_count; i++) { |