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

/*
 *		Connexant Cx11646 library
 *		Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
 *
 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#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) {
		PERR("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);
	PDEBUG(D_USBI, "reg read [%02x] -> %02x ..",
			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) {
		PERR("reg_w: buffer overflow\n");
		return;
	}
	PDEBUG(D_USBO, "reg write [%02x] = %02x..", 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},
	{