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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
#ifndef __UAPI_LINUX_USB_G_HID_H
#define __UAPI_LINUX_USB_G_HID_H
#include <linux/types.h>
/* Maximum HID report length for High-Speed USB (i.e. USB 2.0) */
#define MAX_REPORT_LENGTH 64
/**
* struct usb_hidg_report - response to GET_REPORT
* @report_id: report ID that this is a response for
* @userspace_req:
* !0 this report is used for any pending GET_REPORT request
* but wait on userspace to issue a new report on future requests
* 0 this report is to be used for any future GET_REPORT requests
* @length: length of the report response
* @data: report response
* @padding: padding for 32/64 bit compatibility
*
* Structure used by GADGET_HID_WRITE_GET_REPORT ioctl on /dev/hidg*.
*/
struct usb_hidg_report {
__u8 report_id;
__u8 userspace_req;
__u16 length;
__u8 data[MAX_REPORT_LENGTH];
__u8 padding[4];
};
/* The 'g' code is used by gadgetfs and hid gadget ioctl requests.
* Don't add any colliding codes to either driver, and keep
* them in unique ranges.
*/
#define GADGET_HID_READ_GET_REPORT_ID _IOR('g', 0x41, __u8)
#define GADGET_HID_WRITE_GET_REPORT _IOW('g', 0x42, struct usb_hidg_report)
#endif /* __UAPI_LINUX_USB_G_HID_H */
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