diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index c4ea3a91f17a..6e205ee36ac3 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -84,6 +84,7 @@ static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux, { ssize_t result = 0; struct aux_payload payload; + enum aux_channel_operation_result operation_result; if (WARN_ON(msg->size > 16)) return -E2BIG; @@ -97,13 +98,27 @@ static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux, payload.mot = (msg->request & DP_AUX_I2C_MOT) != 0; payload.defer_delay = 0; - result = dc_link_aux_transfer(TO_DM_AUX(aux)->ddc_service, &payload); + result = dc_link_aux_transfer_raw(TO_DM_AUX(aux)->ddc_service, &payload, + &operation_result); if (payload.write) result = msg->size; - if (result < 0) /* DC doesn't know about kernel error codes */ - result = -EIO; + if (result < 0) + switch (operation_result) { + case AUX_CHANNEL_OPERATION_SUCCEEDED: + break; + case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: + case AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN: + result = -EIO; + break; + case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY: + result = -EBUSY; + break; + case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT: + result = -ETIMEDOUT; + break; + } return result; } |