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