diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3347-drm-amd-display-Use-connector-kdev-as-aux-device-par.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3347-drm-amd-display-Use-connector-kdev-as-aux-device-par.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3347-drm-amd-display-Use-connector-kdev-as-aux-device-par.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3347-drm-amd-display-Use-connector-kdev-as-aux-device-par.patch new file mode 100644 index 00000000..00166c68 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3347-drm-amd-display-Use-connector-kdev-as-aux-device-par.patch @@ -0,0 +1,45 @@ +From 89752c6f44875bc102901df82ee10443a0b558ea Mon Sep 17 00:00:00 2001 +From: Leo Li <sunpeng.li@amd.com> +Date: Fri, 26 Apr 2019 13:40:08 -0400 +Subject: [PATCH 3347/4256] 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> +Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +--- + 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 a6f44a47adcb..083fb9729346 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; + +-- +2.17.1 + |