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DRM_DP_DPCD_READ_LIN(9) DRM Core DRM_DP_DPCD_READ_LIN(9)

NAME

drm_dp_dpcd_read_link_status - read DPCD link status (bytes 0x202-0x207)

SYNOPSIS

int drm_dp_dpcd_read_link_status(struct drm_dp_aux * aux, u8 status[DP_LINK_STATUS_SIZE]);

ARGUMENTS

aux
DisplayPort AUX channel
status[DP_LINK_STATUS_SIZE]
buffer to store the link status in (must be at least 6 bytes)

DESCRIPTION

Returns the number of bytes transferred on success or a negative error code on failure.

AUTHORS

Jesse Barnes <jesse.barnes@intel.com>
 
Intel Corporation,
Initial version
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 
Ideas on board SPRL,
Driver internals
Daniel Vetter <daniel.vetter@ffwll.ch>
 
Intel Corporation,
Contributions all over the place

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16