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d182bf156c
For the userspace it is needed to distinguish between requests for the control or streaming interface. The userspace would have to parse the configfs to know which interface index it has to compare the ctrl requests against. Since the interface numbers are not fixed, e.g. for composite gadgets, the interface offset depends on the setup. The kernel has this information when handing over the ctrl request to the userspace. This patch removes the offset from the interface numbers and expose the default interface defines in the uapi g_uvc.h. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20221011075348.1786897-1-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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* g_uvc.h -- USB Video Class Gadget driver API
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*
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* Copyright (C) 2009-2010 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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*/
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#ifndef __LINUX_USB_G_UVC_H
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#define __LINUX_USB_G_UVC_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/usb/ch9.h>
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#define UVC_EVENT_FIRST (V4L2_EVENT_PRIVATE_START + 0)
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#define UVC_EVENT_CONNECT (V4L2_EVENT_PRIVATE_START + 0)
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#define UVC_EVENT_DISCONNECT (V4L2_EVENT_PRIVATE_START + 1)
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#define UVC_EVENT_STREAMON (V4L2_EVENT_PRIVATE_START + 2)
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#define UVC_EVENT_STREAMOFF (V4L2_EVENT_PRIVATE_START + 3)
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#define UVC_EVENT_SETUP (V4L2_EVENT_PRIVATE_START + 4)
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#define UVC_EVENT_DATA (V4L2_EVENT_PRIVATE_START + 5)
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#define UVC_EVENT_LAST (V4L2_EVENT_PRIVATE_START + 5)
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#define UVC_STRING_CONTROL_IDX 0
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#define UVC_STRING_STREAMING_IDX 1
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struct uvc_request_data {
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__s32 length;
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__u8 data[60];
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};
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struct uvc_event {
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union {
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enum usb_device_speed speed;
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struct usb_ctrlrequest req;
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struct uvc_request_data data;
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};
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};
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#define UVCIOC_SEND_RESPONSE _IOW('U', 1, struct uvc_request_data)
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#endif /* __LINUX_USB_G_UVC_H */
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