Read dpcd link status (bytes 0x202-0x207)
int drm_dp_dpcd_read_link_status(struct drm_dp_aux * aux, u8 status[DP_LINK_STATUS_SIZE]);
aux
DisplayPort AUX channel
status[DP_LINK_STATUS_SIZE]
buffer to store the link status in (must be at least 6 bytes)
Returns the number of bytes transferred on success or a negative error code on failure.
Jesse Barnes <[email protected]>
Intel Corporation,
Initial version
Laurent Pinchart <[email protected]>
Ideas on board SPRL,
Driver internals
Daniel Vetter <[email protected]>
Intel Corporation,
Contributions all over the place