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usb: gadget: f_fs: add ioctl returning ep descriptor

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This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which
returns endpoint descriptor to userspace. It works only if function
is active.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Robert Baldyga
2014-09-09 08:23:16 +02:00
committed by Felipe Balbi
parent e45cfa2051
commit c559a35341
2 changed files with 29 additions and 0 deletions
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6
include/uapi/linux/usb/functionfs.h
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@@ -275,6 +275,12 @@ struct usb_functionfs_event {
*/
#define FUNCTIONFS_ENDPOINT_REVMAP _IO('g', 129)
/*
* Returns endpoint descriptor. If function is not active returns -ENODEV.
*/
#define FUNCTIONFS_ENDPOINT_DESC _IOR('g', 130, \
struct usb_endpoint_descriptor)
#endif /* _UAPI__LINUX_FUNCTIONFS_H__ */