diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2020-04-05 16:41:13 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-09 10:43:17 -0400 |
| commit | 8ccf0e20769d96b8d0ccbfcb56bc7ca7874154a4 (patch) | |
| tree | e7e1ba1085e53420574114149841c530b98910c3 /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h | |
| parent | 4404b47852f3ec709f5787c045650afabea00b4b (diff) | |
drm/amd/display: determine USB C DP2 mode only when USB DP Alt is enabled
[why]
When display is connected with a native DP port, DP2 mode register value
is a don't care. Driver mistakenly reduce max supported lane count to 2
lane based on the don't care value.
[how]
Add additional check only if USB C DP alt mode is enabled, we will
determine max lane count supported based on current mode.
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h index 762109174fb8..68395bcc24fd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h @@ -575,4 +575,7 @@ void dcn10_aux_initialize(struct dcn10_link_encoder *enc10); enum signal_type dcn10_get_dig_mode( struct link_encoder *enc); + +void dcn10_link_encoder_get_max_link_cap(struct link_encoder *enc, + struct dc_link_settings *link_settings); #endif /* __DC_LINK_ENCODER__DCN10_H__ */ |