From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001 From: Kacper Date: Sun, 7 Dec 2025 20:10:31 +0100 Subject: Add build system scaffolding and libc headers --- include/arch/x86_64/linux/usb/g_hid.h | 40 +++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/arch/x86_64/linux/usb/g_hid.h (limited to 'include/arch/x86_64/linux/usb/g_hid.h') diff --git a/include/arch/x86_64/linux/usb/g_hid.h b/include/arch/x86_64/linux/usb/g_hid.h new file mode 100644 index 00000000..97355182 --- /dev/null +++ b/include/arch/x86_64/linux/usb/g_hid.h @@ -0,0 +1,40 @@ +/* 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 + +/* 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 */ -- cgit v1.2.3