On 5/16/19 11:18 AM, sunpeng.li@xxxxxxx wrote:
>
> From: Leo Li <sunpeng.li@xxxxxxx>
>
> 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: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Lyude Paul <lyude@xxxxxxxxxx>
> Cc: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
> Cc: Harry Wentland <harry.wentland@xxxxxxx>
> Cc: Jerry (Fangzhi) Zuo <Jerry.Zuo@xxxxxxx>
> Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
No idea why it wasn't like this in the first place.
Nicholas Kazlauskas
> ---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> 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 a6f44a4..083fb97 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
> @@ -385,7 +385,7 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
> struct amdgpu_dm_connector *aconnector)
> {
> aconnector->dm_dp_aux.aux.name = "dmdc";
> - aconnector->dm_dp_aux.aux.dev = dm->adev->dev;
> + aconnector->dm_dp_aux.aux.dev = aconnector->base.kdev;
> aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
> aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
>
> --
> 2.7.4
>
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