diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index b7ee63cd8dc7..f02092a0dc76 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -573,12 +573,28 @@ bool dal_ddc_service_query_ddc_data( return ret; } -int dc_link_aux_transfer(struct ddc_service *ddc, - struct aux_payload *payload) +/* dc_link_aux_transfer_raw() - Attempt to transfer + * the given aux payload. This function does not perform + * retries or handle error states. The reply is returned + * in the payload->reply and the result through + * *operation_result. Returns the number of bytes transferred, + * or -1 on a failure. + */ +int dc_link_aux_transfer_raw(struct ddc_service *ddc, + struct aux_payload *payload, + enum aux_channel_operation_result *operation_result) { - return dce_aux_transfer(ddc, payload); + return dce_aux_transfer_raw(ddc, payload, operation_result); } +/* dc_link_aux_transfer_with_retries() - Attempt to submit an + * aux payload, retrying on timeouts, defers, and busy states + * as outlined in the DP spec. Returns true if the request + * was successful. + * + * Unless you want to implement your own retry semantics, this + * is probably the one you want. + */ bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc, struct aux_payload *payload) { |