path: root/drivers/media/usb/gspca/conex.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *		Connexant Cx11646 library
 *		Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
 *
 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "conex"

#include "gspca.h"
#define CONEX_CAM 1		/* special JPEG header */
#include "jpeg.h"

MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA USB Conexant Camera Driver");
MODULE_LICENSE("GPL");

#define QUALITY 50

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */
	struct v4l2_ctrl *brightness;
	struct v4l2_ctrl *contrast;
	struct v4l2_ctrl *sat;

	u8 jpeg_hdr[JPEG_HDR_SZ];
};

static const struct v4l2_pix_format vga_mode[] = {
	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 3},
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 2},
	{352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 352,
		.sizeimage = 352 * 288 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
};

/* the read bytes are found in gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
		  __u16 index,
		  __u16 len)
{
	struct usb_device *dev = gspca_dev->dev;

	if (len > USB_BUF_SZ) {
		gspca_err(gspca_dev, "reg_r: buffer overflow\n");
		return;
	}

	usb_control_msg(dev,
			usb_rcvctrlpipe(dev, 0),
			0,
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,
			index, gspca_dev->usb_buf, len,
			500);
	gspca_dbg(gspca_dev, D_USBI, "reg read [%02x] -> %02x ..\n",
		  index, gspca_dev->usb_buf[0]);
}

/* the bytes to write are in gspca_dev->usb_buf */
static void reg_w_val(struct gspca_dev *gspca_dev,
			__u16 index,
			__u8 val)
{
	struct usb_device *dev = gspca_dev->dev;

	gspca_dev->usb_buf[0] = val;
	usb_control_msg(dev,
			usb_sndctrlpipe(dev, 0),
			0,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,
			index, gspca_dev->usb_buf, 1, 500);
}

static void reg_w(struct gspca_dev *gspca_dev,
		  __u16 index,
		  const __u8 *buffer,
		  __u16 len)
{
	struct usb_device *dev = gspca_dev->dev;

	if (len > USB_BUF_SZ) {
		gspca_err(gspca_dev, "reg_w: buffer overflow\n");
		return;
	}
	gspca_dbg(gspca_dev, D_USBO, "reg write [%02x] = %02x..\n",
		  index, *buffer);

	memcpy(gspca_dev->usb_buf, buffer, len);
	usb_control_msg(dev,
			usb_sndctrlpipe(dev, 0),
			0,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0,
			index, gspca_dev->usb_buf, len, 500);
}

static const __u8 cx_sensor_init[][4] = {
	{0x88, 0x11, 0x01, 0x01},
	{0x88, 0x12, 0x70, 0x01},
	{0x88, 0x0f, 0x00, 0x01},
	{0x88, 0x05, 0x01, 0x01},
	{}
};

static const __u8 cx11646_fw1[][3] = {
	{0x00, 0x02, 0x00},
	{0x01, 0x43, 0x00},
	{0x02, 0xA7, 0x00},
	{0x03, 0x8B, 0x01},
	{0x04, 0xE9, 0x02},
	{0x05, 0x08, 0x04},
	{0x06, 0x08, 0x05},
	{0x07, 0x07, 0x06},
	{0x08, 0xE7, 0x06},
	{0x09, 0xC6, 0x07},
	{0x0A, 0x86, 0x08},
	{0x0B, 0x46, 0x09},
	{0x0C, 0x05, 0x0A},
	{0x0D, 0xA5, 0x0A},
	{0x0E, 0x45, 0x0B},
	{0x0F, 0xE5, 0x0B},
	{0x10, 0x85, 0x0C},
	{0x11, 0x25, 0x0D},
	{0x12, 0xC4, 0x0D},
	{0x13, 0x45, 0x0E},
	{0x14, 0xE4, 0x0E},
	{0x15, 0x64, 0x0F},
	{0x16, 0xE4, 0x0F},
	{0x17, 0x64, 0x10},
	{0x18, 0xE4, 0x10},
	{0x19, 0x64, 0x11},
	{0x1A, 0xE4, 0x11},
	{0x1B, 0x64, 0x12},
	{0x1C, 0xE3, 0x12},
	{0x1D, 0x44, 0x13},
	{0x1E, 0xC3, 0x13},
	{0x1F, 0x24, 0x14},
	{0x20, 0xA3, 0x14},
	{0x21, 0x04, 0x15},
	{0x22, 0x83, 0x15},
	{0x23, 0xE3, 0x15},
	{0x24, 0x43, 0x16},
	{0x25, 0xA4, 0x16},
	{0x26, 0x23, 0x17},
	{0x27, 0x83, 0x17},
	{0x28, 0xE3, 0x17},
	{0x29, 0x43, 0x18},
	{0x2A, 0xA3, 0x18},
	{0x2B, 0x03, 0x19},
	{0x2C, 0x63, 0x19},
	{0x2D, 0xC3, 0x19},
	{0x2E, 0x22, 0x1A},
	{0x2F, 0x63, 0x1A},
	{0x30