Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 184 insertions, 0 deletions

diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h
new file mode 100644
index 0000000000..6751de8b63
--- /dev/null
+++ b/drivers/usb/gadget/function/uvc.h
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *	uvc_gadget.h  --  USB Video Class Gadget driver
+ *
+ *	Copyright (C) 2009-2010
+ *	    Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#ifndef _UVC_GADGET_H_
+#define _UVC_GADGET_H_
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/usb/composite.h>
+#include <linux/videodev2.h>
+#include <linux/wait.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-fh.h>
+
+#include "uvc_queue.h"
+
+struct usb_ep;
+struct usb_request;
+struct uvc_descriptor_header;
+struct uvc_device;
+
+/* ------------------------------------------------------------------------
+ * Debugging, printing and logging
+ */
+
+#define UVC_TRACE_PROBE				(1 << 0)
+#define UVC_TRACE_DESCR				(1 << 1)
+#define UVC_TRACE_CONTROL			(1 << 2)
+#define UVC_TRACE_FORMAT			(1 << 3)
+#define UVC_TRACE_CAPTURE			(1 << 4)
+#define UVC_TRACE_CALLS				(1 << 5)
+#define UVC_TRACE_IOCTL				(1 << 6)
+#define UVC_TRACE_FRAME				(1 << 7)
+#define UVC_TRACE_SUSPEND			(1 << 8)
+#define UVC_TRACE_STATUS			(1 << 9)
+
+#define UVC_WARN_MINMAX				0
+#define UVC_WARN_PROBE_DEF			1
+
+extern unsigned int uvc_gadget_trace_param;
+
+#define uvc_trace(flag, msg...) \
+	do { \
+		if (uvc_gadget_trace_param & flag) \
+			printk(KERN_DEBUG "uvcvideo: " msg); \
+	} while (0)
+
+#define uvcg_dbg(f, fmt, args...) \
+	dev_dbg(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)
+#define uvcg_info(f, fmt, args...) \
+	dev_info(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)
+#define uvcg_warn(f, fmt, args...) \
+	dev_warn(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)
+#define uvcg_err(f, fmt, args...) \
+	dev_err(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)
+
+/* ------------------------------------------------------------------------
+ * Driver specific constants
+ */
+
+#define UVC_MAX_REQUEST_SIZE			64
+#define UVC_MAX_EVENTS				4
+
+#define UVCG_REQUEST_HEADER_LEN			12
+
+/* ------------------------------------------------------------------------
+ * Structures
+ */
+struct uvc_request {
+	struct usb_request *req;
+	u8 *req_buffer;
+	struct uvc_video *video;
+	struct sg_table sgt;
+	u8 header[UVCG_REQUEST_HEADER_LEN];
+	struct uvc_buffer *last_buf;
+};
+
+struct uvc_video {
+	struct uvc_device *uvc;
+	struct usb_ep *ep;
+
+	struct work_struct pump;
+	struct workqueue_struct *async_wq;
+
+	/* Frame parameters */
+	u8 bpp;
+	u32 fcc;
+	unsigned int width;
+	unsigned int height;
+	unsigned int imagesize;
+	struct mutex mutex;	/* protects frame parameters */
+
+	unsigned int uvc_num_requests;
+
+	/* Requests */
+	unsigned int req_size;
+	struct uvc_request *ureq;
+	struct list_head req_free;
+	spinlock_t req_lock;
+
+	unsigned int req_int_count;
+
+	void (*encode) (struct usb_request *req, struct uvc_video *video,
+			struct uvc_buffer *buf);
+
+	/* Context data used by the completion handler */
+	__u32 payload_size;
+	__u32 max_payload_size;
+
+	struct uvc_video_queue queue;
+	unsigned int fid;
+};
+
+enum uvc_state {
+	UVC_STATE_DISCONNECTED,
+	UVC_STATE_CONNECTED,
+	UVC_STATE_STREAMING,
+};
+
+struct uvc_device {
+	struct video_device vdev;
+	struct v4l2_device v4l2_dev;
+	enum uvc_state state;
+	struct usb_function func;
+	struct uvc_video video;
+	bool func_connected;
+	wait_queue_head_t func_connected_queue;
+
+	struct uvcg_streaming_header *header;
+
+	/* Descriptors */
+	struct {
+		const struct uvc_descriptor_header * const *fs_control;
+		const struct uvc_descriptor_header * const *ss_control;
+		const struct uvc_descriptor_header * const *fs_streaming;
+		const struct uvc_descriptor_header * const *hs_streaming;
+		const struct uvc_descriptor_header * const *ss_streaming;
+		struct list_head *extension_units;
+	} desc;
+
+	unsigned int control_intf;
+	struct usb_ep *interrupt_ep;
+	struct usb_request *control_req;
+	void *control_buf;
+	bool enable_interrupt_ep;
+
+	unsigned int streaming_intf;
+
+	/* Events */
+	unsigned int event_length;
+	unsigned int event_setup_out : 1;
+};
+
+static inline struct uvc_device *to_uvc(struct usb_function *f)
+{
+	return container_of(f, struct uvc_device, func);
+}
+
+struct uvc_file_handle {
+	struct v4l2_fh vfh;
+	struct uvc_video *device;
+	bool is_uvc_app_handle;
+};
+
+#define to_uvc_file_handle(handle) \
+	container_of(handle, struct uvc_file_handle, vfh)
+
+/* ------------------------------------------------------------------------
+ * Functions
+ */
+
+extern void uvc_function_setup_continue(struct uvc_device *uvc);
+extern void uvc_function_connect(struct uvc_device *uvc);
+extern void uvc_function_disconnect(struct uvc_device *uvc);
+
+#endif /* _UVC_GADGET_H_ */