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| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2014-05-08 16:06:25 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-05-14 18:39:14 +0400 |
| commit | 87213d388e927aaa88b21d5ff7e1f75ca2288da1 (patch) | |
| tree | d68f947c50a65e662abdc6885b2f5ce801fd5013 /Documentation | |
| parent | de7a8d2d534fb3c35c29762b8a7d14e5b1937d6f (diff) | |
| download | linux-87213d388e927aaa88b21d5ff7e1f75ca2288da1.tar.xz | |
usb: gadget: configfs: OS String support
Add handling of OS String extension from the configfs interface.
A directory "os_desc" is added at the top level of a gadget's
directories hierarchy. In the "os_desc" directory there are
three attributes: "use", "b_vendor_code" and "qw_sign".
If "use" contains "0" the OS string is not reported to the host.
"b_vendor_code" contains a one-byte value which is used
for custom per-device and per-interface requests.
"qw_sign" contains an identifier to be reported as the "OS String"
proper.
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 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget b/Documentation/ABI/testing/configfs-usb-gadget index 37559a06393b..0e7b786f24ac 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget +++ b/Documentation/ABI/testing/configfs-usb-gadget @@ -79,3 +79,14 @@ Description: product - gadget's product description manufacturer - gadget's manufacturer description +What: /config/usb-gadget/gadget/os_desc +Date: May 2014 +KernelVersion: 3.16 +Description: + This group contains "OS String" extension handling attributes. + + use - flag turning "OS Desctiptors" support on/off + b_vendor_code - one-byte value used for custom per-device and + per-interface requests + qw_sign - an identifier to be reported as "OS String" + proper |