/* 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 */