diff options
| author | Timur Kristóf <timur.kristof@gmail.com> | 2026-01-26 22:08:25 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-02-18 10:41:34 -0500 |
| commit | f402898bd101af3166bde236b7f6a43d926e17a0 (patch) | |
| tree | 330cc997cd8a4c55a7a5ef769b97cd4ce0f3f30d /drivers/gpu | |
| parent | 2de34fbcab2063cd3d52e5872a801b9a5fc755d0 (diff) | |
drm/amd/display: Only use analog link 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 link encoder code path.
Fixes: 0fbe321a93ce ("drm/amd/display: Implement DCE analog link 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')
3 files changed, 6 insertions, 3 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 a929e64524e5..864634e14de1 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 @@ -638,7 +638,8 @@ static struct link_encoder *dce100_link_encoder_create( if (!enc110) return NULL; - if (enc_init_data->connector.id == CONNECTOR_ID_VGA) { + if (enc_init_data->connector.id == CONNECTOR_ID_VGA && + enc_init_data->analog_engine != ENGINE_ID_UNKNOWN) { dce110_link_encoder_construct(enc110, enc_init_data, &link_enc_feature, diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce60/dce60_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce60/dce60_resource.c index 068fb1df8d88..90d826237cf0 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dce60/dce60_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dce60/dce60_resource.c @@ -733,7 +733,8 @@ static struct link_encoder *dce60_link_encoder_create( if (!enc110) return NULL; - if (enc_init_data->connector.id == CONNECTOR_ID_VGA) { + if (enc_init_data->connector.id == CONNECTOR_ID_VGA && + enc_init_data->analog_engine != ENGINE_ID_UNKNOWN) { dce60_link_encoder_construct(enc110, enc_init_data, &link_enc_feature, diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c index 8687104cabb7..cde2c2cba1dd 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c @@ -740,7 +740,8 @@ static struct link_encoder *dce80_link_encoder_create( if (!enc110) return NULL; - if (enc_init_data->connector.id == CONNECTOR_ID_VGA) { + if (enc_init_data->connector.id == CONNECTOR_ID_VGA && + enc_init_data->analog_engine != ENGINE_ID_UNKNOWN) { dce110_link_encoder_construct(enc110, enc_init_data, &link_enc_feature, |