diff options
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 | 49 |
1 files changed, 49 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 ec304b1a5973..8403b6a9a77b 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 @@ -169,6 +169,11 @@ static void get_payload_table( mutex_unlock(&mst_mgr->payload_lock); } +void dm_helpers_dp_update_branch_info( + struct dc_context *ctx, + const struct dc_link *link) +{} + /* * Writes payload allocation table in immediate downstream device. */ @@ -454,6 +459,22 @@ 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, @@ -497,6 +518,34 @@ enum dc_edid_status dm_helpers_read_local_edid( DRM_ERROR("EDID err: %d, on connector: %s", edid_status, aconnector->base.name); + if (link->aux_mode) { + union test_request test_request = { {0} }; + union test_response test_response = { {0} }; + + dm_helpers_dp_read_dpcd(ctx, + link, + DP_TEST_REQUEST, + &test_request.raw, + sizeof(union test_request)); + + if (!test_request.bits.EDID_READ) + return edid_status; + + test_response.bits.EDID_CHECKSUM_WRITE = 1; + + dm_helpers_dp_write_dpcd(ctx, + link, + DP_TEST_EDID_CHECKSUM, + &sink->dc_edid.raw_edid[sink->dc_edid.length-1], + 1); + + dm_helpers_dp_write_dpcd(ctx, + link, + DP_TEST_RESPONSE, + &test_response.raw, + sizeof(test_response)); + + } return edid_status; } |