tree 5469614e3cc2b9a354fd2845acfa4beba08993ce
parent 7713c0f10dd52ff91a136566b91e7bcaabd4bda9
author Leo Li <sunpeng.li@amd.com> 1563924484 -0400
committer Harry Wentland <harry.wentland@amd.com> 1564091517 -0400

drm/amd/display: Use connector kdev as aux device parent

Set the connector's kernel device as the parent for the aux kernel
device. This allows udev rules to access connector attributes when
creating symlinks to aux devices.

For example, the following udev rule:

SUBSYSTEM=="drm_dp_aux_dev", SUBSYSTEMS=="drm", ATTRS{edid}=="*",
	SYMLINK+="drm_dp_aux/by-name/$id"

Will create the following symlinks using the connector's name:

$ ls /dev/drm_dp_aux/by-name/
card0-DP-1  card0-DP-2  card0-DP-3

Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190723232808.28128-6-sunpeng.li@amd.com