diff options
| author | Harry Wentland <harry.wentland@amd.com> | 2018-05-29 13:11:55 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-13 14:48:21 -0500 |
| commit | aac5db824d6f5997344101ae0e71fbb003b9692b (patch) | |
| tree | ed5c11e0ab8c214bede4d9f9af03e3dd2cd34102 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
| parent | 1bd493e37807c4bf7ee8c4809d2d83545379c04d (diff) | |
drm/amd/display: Serialize is_dp_sink_present
Access to GPIO needs to be serialized. Aux transactions are already
serialized in DRM but we also need to serialize access to the GPIO pin
for purposes of DP dongle detection.
Call is_dp_sink_present through DM so we can lock correctly. This
follows the same pattern used for DPCD transactions.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index b19dc4cfc030..7b51b8fde3fe 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -454,6 +454,22 @@ bool dm_helpers_submit_i2c( return result; } +bool dm_helpers_is_dp_sink_present(struct dc_link *link) +{ + bool dp_sink_present; + struct amdgpu_dm_connector *aconnector = link->priv; + + if (!aconnector) { + BUG_ON("Failed to found connector for link!"); + return true; + } + + mutex_lock(&aconnector->dm_dp_aux.aux.hw_mutex); + dp_sink_present = dc_link_is_dp_sink_present(link); + mutex_unlock(&aconnector->dm_dp_aux.aux.hw_mutex); + return dp_sink_present; +} + enum dc_edid_status dm_helpers_read_local_edid( struct dc_context *ctx, struct dc_link *link, |