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authorAndrzej Pietrasiewicz <andrzej.p@samsung.com>2014-05-08 16:06:28 +0400
committerFelipe Balbi <balbi@ti.com>2014-05-14 18:39:51 +0400
commit7419485f197c436d41535df78ddea1085042d271 (patch)
treebbf52fde27c3b5be352a3c98ea58da7eea8389d9 /Documentation/ABI/testing/configfs-usb-gadget
parenta747b0958b5ead2d4ba46dc1f77d46e693a06efa (diff)
downloadlinux-7419485f197c436d41535df78ddea1085042d271.tar.xz
usb: gadget: configfs: OS Extended Properties descriptors support
Add handling of OS Extended Properties descriptors from configfs interface. One kind of "OS Descriptors" are "Extended Properties" descriptors, which need to be specified per interface or per group of interfaces described by an IAD. This patch adds support for creating subdirectories in interface.<n> directory located in the function's directory. Names of subdirectories created become names of properties. Each property contains two attributes: "type" and "data". The type can be a numeric value 1..7 while data is a blob interpreted depending on the type specified. The types are: 1 - unicode string 2 - unicode string with environment variables 3 - binary 4 - little-endian 32-bit 5 - big-endian 32-bit 6 - unicode string with a symbolic link 7 - multiple unicode strings Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/ABI/testing/configfs-usb-gadget')
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget21
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget b/Documentation/ABI/testing/configfs-usb-gadget
index 5c0b3e6eb981..95a36589a66b 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget
+++ b/Documentation/ABI/testing/configfs-usb-gadget
@@ -75,6 +75,27 @@ Description:
compatible_id - 8-byte string for "Compatible ID"
sub_compatible_id - 8-byte string for "Sub Compatible ID"
+What: /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>/<property>
+Date: May 2014
+KernelVersion: 3.16
+Description:
+ This group contains "Extended Property Descriptors" specific for one
+ gadget's USB interface or one interface group described
+ by an IAD.
+
+ The attributes:
+
+ type - value 1..7 for interpreting the data
+ 1: unicode string
+ 2: unicode string with environment variable
+ 3: binary
+ 4: little-endian 32-bit
+ 5: big-endian 32-bit
+ 6: unicode string with a symbolic link
+ 7: multiple unicode strings
+ data - blob of data to be interpreted depending on
+ type
+
What: /config/usb-gadget/gadget/strings
Date: Jun 2013
KernelVersion: 3.11