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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2 3#ifndef __UAPI_LINUX_USB_G_HID_H4#define __UAPI_LINUX_USB_G_HID_H5 6#include <linux/types.h>7 8/* Maximum HID report length for High-Speed USB (i.e. USB 2.0) */9#define MAX_REPORT_LENGTH 6410 11/**12 * struct usb_hidg_report - response to GET_REPORT13 * @report_id: report ID that this is a response for14 * @userspace_req:15 * !0 this report is used for any pending GET_REPORT request16 * but wait on userspace to issue a new report on future requests17 * 0 this report is to be used for any future GET_REPORT requests18 * @length: length of the report response19 * @data: report response20 * @padding: padding for 32/64 bit compatibility21 *22 * Structure used by GADGET_HID_WRITE_GET_REPORT ioctl on /dev/hidg*.23 */24struct usb_hidg_report {25 __u8 report_id;26 __u8 userspace_req;27 __u16 length;28 __u8 data[MAX_REPORT_LENGTH];29 __u8 padding[4];30};31 32/* The 'g' code is used by gadgetfs and hid gadget ioctl requests.33 * Don't add any colliding codes to either driver, and keep34 * them in unique ranges.35 */36 37#define GADGET_HID_READ_GET_REPORT_ID _IOR('g', 0x41, __u8)38#define GADGET_HID_WRITE_GET_REPORT _IOW('g', 0x42, struct usb_hidg_report)39 40#endif /* __UAPI_LINUX_USB_G_HID_H */41