linux/drivers/media/usb/gspca/stk014.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Syntek DV4000 (STK014) subdriver
 *
 * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
 */

#define pr_fmt(fmt) …

#define MODULE_NAME …

#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;

#define QUALITY …

/* specific webcam descriptor */
struct sd { … };

static const struct v4l2_pix_format vga_mode[] = …;

/* -- read a register -- */
static u8 reg_r(struct gspca_dev *gspca_dev,
			__u16 index)
{ … }

/* -- write a register -- */
static void reg_w(struct gspca_dev *gspca_dev,
			__u16 index, __u16 value)
{ … }

/* -- get a bulk value (4 bytes) -- */
static void rcv_val(struct gspca_dev *gspca_dev,
			int ads)
{ … }

/* -- send a bulk value -- */
static void snd_val(struct gspca_dev *gspca_dev,
			int ads,
			unsigned int val)
{ … }

/* set a camera parameter */
static void set_par(struct gspca_dev *gspca_dev,
		   int parval)
{ … }

static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{ … }

static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{ … }

static void setcolors(struct gspca_dev *gspca_dev, s32 val)
{ … }

static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
{ … }

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
			const struct usb_device_id *id)
{ … }

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{ … }

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{ … }

static void sd_stopN(struct gspca_dev *gspca_dev)
{ … }

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{ … }

static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
{ … }

static const struct v4l2_ctrl_ops sd_ctrl_ops = …;

static int sd_init_controls(struct gspca_dev *gspca_dev)
{ … }

/* sub-driver description */
static const struct sd_desc sd_desc = …;

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = …;
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{ … }

static struct usb_driver sd_driver = …;

module_usb_driver(…) …;