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| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2014-05-08 16:06:28 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-05-14 18:39:51 +0400 |
| commit | 7419485f197c436d41535df78ddea1085042d271 (patch) | |
| tree | bbf52fde27c3b5be352a3c98ea58da7eea8389d9 /Documentation | |
| parent | a747b0958b5ead2d4ba46dc1f77d46e693a06efa (diff) | |
| download | linux-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')
| -rw-r--r-- | Documentation/ABI/testing/configfs-usb-gadget | 21 |
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 |