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authorKieran Bingham <kieran.bingham@ideasonboard.com>2018-05-24 17:16:12 +0100
committerFelipe Balbi <felipe.balbi@linux.intel.com>2018-07-26 13:43:18 +0300
commitd7af78b9245545908c90bce2206f200a4250b5db (patch)
treef3092d857fcf83faff5ba3a21ce2e1786a6710da /Documentation/ABI
parentc728effd56d35c12774210f0732b8eb8b7ce7cd9 (diff)
downloadlinux-d7af78b9245545908c90bce2206f200a4250b5db.tar.bz2
usb: gadget: uvc: Expose configuration name through video node
When utilising multiple instantiations of a UVC gadget on a composite device, there is no clear method to link a particular configuration to its respective video node. Provide a means for identifying the correct video node by exposing the name of the function configuration through sysfs. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-uvc5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uvc b/Documentation/ABI/testing/configfs-usb-gadget-uvc
index 1ba0d0fda9c0..9281e2aa38df 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uvc
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uvc
@@ -263,3 +263,8 @@ Description: Specific streaming header descriptors
is connected
bmInfo - capabilities of this video streaming
interface
+
+What: /sys/class/udc/udc.name/device/gadget/video4linux/video.name/function_name
+Date: May 2018
+KernelVersion: 4.19
+Description: UVC configfs function instance name