usbvision-video.c 49.9 KB
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/*
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 * USB USBVISION Video device driver 0.9.9
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 *
 *
 *
 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
 *
 * This module is part of usbvision driver project.
 *
 * 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
 * (at your option) 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Let's call the version 0.... until compression decoding is completely
 * implemented.
 *
 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
 * It was based on USB CPiA driver written by Peter Pregler,
 * Scott J. Bertin and Johannes Erdfelt
 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
 * Updates to driver completed by Dwaine P. Garden
 *
 *
 * TODO:
 *     - use submit_urb for all setup packets
 *     - Fix memory settings for nt1004. It is 4 times as big as the
 *       nt1003 memory.
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 *     - Add audio on endpoint 3 for nt1004 chip.
 *         Seems impossible, needs a codec interface.  Which one?
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 *     - Clean up the driver.
 *     - optimization for performance.
 *     - Add Videotext capability (VBI).  Working on it.....
 *     - Check audio for other devices
 *
 */

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#include <linux/version.h>
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#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/utsname.h>
#include <linux/highmem.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <asm/io.h>
#include <linux/videodev2.h>
#include <linux/video_decoder.h>
#include <linux/i2c.h>

#include <media/saa7115.h>
#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/tuner.h>

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#include <linux/workqueue.h>
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#include "usbvision.h"
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#include "usbvision-cards.h"
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#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
 Dwaine Garden <DwaineGarden@rogers.com>"
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#define DRIVER_NAME "usbvision"
#define DRIVER_ALIAS "USBVision"
#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
#define DRIVER_LICENSE "GPL"
#define USBVISION_DRIVER_VERSION_MAJOR 0
#define USBVISION_DRIVER_VERSION_MINOR 9
#define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
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#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
USBVISION_DRIVER_VERSION_MINOR,\
USBVISION_DRIVER_VERSION_PATCHLEVEL)
#define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
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#define	ENABLE_HEXDUMP	0	/* Enable if you need it */


#ifdef USBVISION_DEBUG
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	#define PDEBUG(level, fmt, args...) { \
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		if (video_debug & (level)) \
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			printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
				__func__, __LINE__ , ## args); \
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	}
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#else
	#define PDEBUG(level, fmt, args...) do {} while(0)
#endif

#define DBG_IO		1<<1
#define DBG_PROBE	1<<2
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#define DBG_MMAP	1<<3
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//String operations
#define rmspace(str)	while(*str==' ') str++;
#define goto2next(str)	while(*str!=' ') str++; while(*str==' ') str++;


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/* sequential number of usbvision device */
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static int usbvision_nr;
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static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
	{ 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
	{ 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
	{ 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
	{ 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
	{ 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
	{ 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
	{ 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
	{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
};

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/* Function prototypes */
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static void usbvision_release(struct usb_usbvision *usbvision);

J
Joe Perches 已提交
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/* Default initialization of device driver parameters */
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/* Set the default format for ISOC endpoint */
static int isocMode = ISOC_MODE_COMPRESS;
/* Set the default Debug Mode of the device driver */
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static int video_debug;
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/* Set the default device to power on at startup */
static int PowerOnAtOpen = 1;
/* Sequential Number of Video Device */
static int video_nr = -1;
/* Sequential Number of Radio Device */
static int radio_nr = -1;
/* Sequential Number of VBI Device */
static int vbi_nr = -1;

/* Grab parameters for the device driver */

/* Showing parameters under SYSFS */
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module_param(isocMode, int, 0444);
module_param(video_debug, int, 0444);
module_param(PowerOnAtOpen, int, 0444);
module_param(video_nr, int, 0444);
module_param(radio_nr, int, 0444);
module_param(vbi_nr, int, 0444);

MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");


// Misc stuff
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
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MODULE_VERSION(USBVISION_VERSION_STRING);
MODULE_ALIAS(DRIVER_ALIAS);
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/*****************************************************************************/
/* SYSFS Code - Copied from the stv680.c usb module.			     */
/* Device information is located at /sys/class/video4linux/video0            */
/* Device parameters information is located at /sys/module/usbvision         */
/* Device USB Information is located at                                      */
/*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
/*****************************************************************************/
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#define YES_NO(x) ((x) ? "Yes" : "No")

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static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	return video_get_drvdata(vdev);
}

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static ssize_t show_version(struct device *cd,
			    struct device_attribute *attr, char *buf)
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{
	return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
}
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static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
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static ssize_t show_model(struct device *cd,
			  struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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	return sprintf(buf, "%s\n",
		       usbvision_device_data[usbvision->DevModel].ModelString);
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}
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static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
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static ssize_t show_hue(struct device *cd,
			struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
	struct v4l2_control ctrl;
	ctrl.id = V4L2_CID_HUE;
	ctrl.value = 0;
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	if(usbvision->user)
		call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
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	return sprintf(buf, "%d\n", ctrl.value);
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}
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static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
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static ssize_t show_contrast(struct device *cd,
			     struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
	struct v4l2_control ctrl;
	ctrl.id = V4L2_CID_CONTRAST;
	ctrl.value = 0;
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	if(usbvision->user)
		call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
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	return sprintf(buf, "%d\n", ctrl.value);
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}
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static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
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static ssize_t show_brightness(struct device *cd,
			       struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
	struct v4l2_control ctrl;
	ctrl.id = V4L2_CID_BRIGHTNESS;
	ctrl.value = 0;
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	if(usbvision->user)
		call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
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	return sprintf(buf, "%d\n", ctrl.value);
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}
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static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
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static ssize_t show_saturation(struct device *cd,
			       struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
	struct v4l2_control ctrl;
	ctrl.id = V4L2_CID_SATURATION;
	ctrl.value = 0;
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	if(usbvision->user)
		call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
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	return sprintf(buf, "%d\n", ctrl.value);
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}
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static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
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static ssize_t show_streaming(struct device *cd,
			      struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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	return sprintf(buf, "%s\n",
		       YES_NO(usbvision->streaming==Stream_On?1:0));
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}
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static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
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static ssize_t show_compression(struct device *cd,
				struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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	return sprintf(buf, "%s\n",
		       YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
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}
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static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
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static ssize_t show_device_bridge(struct device *cd,
				  struct device_attribute *attr, char *buf)
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{
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	struct video_device *vdev =
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		container_of(cd, struct video_device, dev);
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	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
	return sprintf(buf, "%d\n", usbvision->bridgeType);
}
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static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
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static void usbvision_create_sysfs(struct video_device *vdev)
{
	int res;
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	if (!vdev)
		return;
	do {
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		res = device_create_file(&vdev->dev, &dev_attr_version);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_model);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_hue);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_contrast);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_brightness);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_saturation);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_streaming);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_compression);
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		if (res<0)
			break;
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		res = device_create_file(&vdev->dev, &dev_attr_bridge);
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		if (res>=0)
			return;
	} while (0);

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	err("%s error: %d\n", __func__, res);
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}

static void usbvision_remove_sysfs(struct video_device *vdev)
{
	if (vdev) {
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		device_remove_file(&vdev->dev, &dev_attr_version);
		device_remove_file(&vdev->dev, &dev_attr_model);
		device_remove_file(&vdev->dev, &dev_attr_hue);
		device_remove_file(&vdev->dev, &dev_attr_contrast);
		device_remove_file(&vdev->dev, &dev_attr_brightness);
		device_remove_file(&vdev->dev, &dev_attr_saturation);
		device_remove_file(&vdev->dev, &dev_attr_streaming);
		device_remove_file(&vdev->dev, &dev_attr_compression);
		device_remove_file(&vdev->dev, &dev_attr_bridge);
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	}
}

/*
 * usbvision_open()
 *
 * This is part of Video 4 Linux API. The driver can be opened by one
 * client only (checks internal counter 'usbvision->user'). The procedure
 * then allocates buffers needed for video processing.
 *
 */
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static int usbvision_v4l2_open(struct file *file)
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{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	int errCode = 0;

	PDEBUG(DBG_IO, "open");

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	lock_kernel();
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	usbvision_reset_powerOffTimer(usbvision);

	if (usbvision->user)
		errCode = -EBUSY;
	else {
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		/* Allocate memory for the scratch ring buffer */
		errCode = usbvision_scratch_alloc(usbvision);
		if (isocMode==ISOC_MODE_COMPRESS) {
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			/* Allocate intermediate decompression buffers
			   only if needed */
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			errCode = usbvision_decompress_alloc(usbvision);
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		}
		if (errCode) {
			/* Deallocate all buffers if trouble */
			usbvision_scratch_free(usbvision);
			usbvision_decompress_free(usbvision);
		}
	}

	/* If so far no errors then we shall start the camera */
	if (!errCode) {
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		mutex_lock(&usbvision->lock);
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		if (usbvision->power == 0) {
			usbvision_power_on(usbvision);
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			usbvision_i2c_register(usbvision);
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		}

		/* Send init sequence only once, it's large! */
		if (!usbvision->initialized) {
			int setup_ok = 0;
			setup_ok = usbvision_setup(usbvision,isocMode);
			if (setup_ok)
				usbvision->initialized = 1;
			else
				errCode = -EBUSY;
		}

		if (!errCode) {
			usbvision_begin_streaming(usbvision);
			errCode = usbvision_init_isoc(usbvision);
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			/* device must be initialized before isoc transfer */
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			usbvision_muxsel(usbvision,0);
			usbvision->user++;
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		} else {
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			if (PowerOnAtOpen) {
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				usbvision_i2c_unregister(usbvision);
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				usbvision_power_off(usbvision);
				usbvision->initialized = 0;
			}
		}
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		mutex_unlock(&usbvision->lock);
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	}

	/* prepare queues */
	usbvision_empty_framequeues(usbvision);

	PDEBUG(DBG_IO, "success");
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	unlock_kernel();
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	return errCode;
}

/*
 * usbvision_v4l2_close()
 *
 * This is part of Video 4 Linux API. The procedure
 * stops streaming and deallocates all buffers that were earlier
 * allocated in usbvision_v4l2_open().
 *
 */
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static int usbvision_v4l2_close(struct file *file)
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{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	PDEBUG(DBG_IO, "close");
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	mutex_lock(&usbvision->lock);
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	usbvision_audio_off(usbvision);
	usbvision_restart_isoc(usbvision);
	usbvision_stop_isoc(usbvision);

	usbvision_decompress_free(usbvision);
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	usbvision_frames_free(usbvision);
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	usbvision_empty_framequeues(usbvision);
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	usbvision_scratch_free(usbvision);

	usbvision->user--;

	if (PowerOnAtOpen) {
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		/* power off in a little while
		   to avoid off/on every close/open short sequences */
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		usbvision_set_powerOffTimer(usbvision);
		usbvision->initialized = 0;
	}

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	mutex_unlock(&usbvision->lock);
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	if (usbvision->remove_pending) {
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		printk(KERN_INFO "%s: Final disconnect\n", __func__);
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		usbvision_release(usbvision);
	}

	PDEBUG(DBG_IO, "success");
	return 0;
}


/*
 * usbvision_ioctl()
 *
 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 *
 */
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#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vidioc_g_register (struct file *file, void *priv,
				struct v4l2_register *reg)
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{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	int errCode;
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	if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
		return -EINVAL;
	/* NT100x has a 8-bit register space */
	errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
	if (errCode < 0) {
		err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
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		    __func__, errCode);
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		return errCode;
	}
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	reg->val = errCode;
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	return 0;
}
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static int vidioc_s_register (struct file *file, void *priv,
				struct v4l2_register *reg)
{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	int errCode;
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	if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
		return -EINVAL;
	/* NT100x has a 8-bit register space */
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	errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
	if (errCode < 0) {
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		err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
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		    __func__, errCode);
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		return errCode;
	}
	return 0;
}
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#endif
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static int vidioc_querycap (struct file *file, void  *priv,
					struct v4l2_capability *vc)
{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
	strlcpy(vc->card,
		usbvision_device_data[usbvision->DevModel].ModelString,
		sizeof(vc->card));
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	strlcpy(vc->bus_info, dev_name(&usbvision->dev->dev),
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		sizeof(vc->bus_info));
	vc->version = USBVISION_DRIVER_VERSION;
	vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
		V4L2_CAP_AUDIO |
		V4L2_CAP_READWRITE |
		V4L2_CAP_STREAMING |
		(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
	return 0;
}

static int vidioc_enum_input (struct file *file, void *priv,
				struct v4l2_input *vi)
{
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	struct usb_usbvision *usbvision = video_drvdata(file);
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	int chan;

	if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
		return -EINVAL;
	if (usbvision->have_tuner) {
		chan = vi->index;
	} else {
		chan = vi->index + 1; /*skip Television string*/
	}
	/* Determine the requested input characteristics
	   specific for each usbvision card model */
	switch(chan) {
	case 0:
		if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
			strcpy(vi->name, "White Video Input");
		} else {
			strcpy(vi->name, "Television");
			vi->type = V4L2_INPUT_TYPE_TUNER;
			vi->audioset = 1;
			vi->tuner = chan;
			vi->std = USBVISION_NORMS;
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		}
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		break;
	case 1:
		vi->type = V4L2_INPUT_TYPE_CAMERA;
		if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
			strcpy(vi->name, "Green Video Input");
		} else {
			strcpy(vi->name, "Composite Video Input");
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		}
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		vi->std = V4L2_STD_PAL;
		break;
	case 2:
		vi->type = V4L2_INPUT_TYPE_CAMERA;
		if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
			strcpy(vi->name, "Yellow Video Input");
		} else {
			strcpy(vi->name, "S-Video Input");
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		}
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		vi->std = V4L2_STD_PAL;
		break;
	case 3:
		vi->type = V4L2_INPUT_TYPE_CAMERA;
		strcpy(vi->name, "Red Video Input");
		vi->std = V4L2_STD_PAL;
		break;
	}
	return 0;
}
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static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
{
593
	struct usb_usbvision *usbvision = video_drvdata(file);
594

595 596 597
	*input = usbvision->ctl_input;
	return 0;
}
598

599 600
static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
{
601
	struct usb_usbvision *usbvision = video_drvdata(file);
602

603 604
	if ((input >= usbvision->video_inputs) || (input < 0) )
		return -EINVAL;
605

606
	mutex_lock(&usbvision->lock);
607
	usbvision_muxsel(usbvision, input);
608 609 610 611
	usbvision_set_input(usbvision);
	usbvision_set_output(usbvision,
			     usbvision->curwidth,
			     usbvision->curheight);
612
	mutex_unlock(&usbvision->lock);
613 614
	return 0;
}
615

616 617
static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
{
618 619
	struct usb_usbvision *usbvision = video_drvdata(file);

620
	usbvision->tvnormId=*id;
621

622
	mutex_lock(&usbvision->lock);
623 624
	call_i2c_clients(usbvision, VIDIOC_S_STD,
			 &usbvision->tvnormId);
625
	mutex_unlock(&usbvision->lock);
626 627
	/* propagate the change to the decoder */
	usbvision_muxsel(usbvision, usbvision->ctl_input);
628

629 630
	return 0;
}
631

632 633 634
static int vidioc_g_tuner (struct file *file, void *priv,
				struct v4l2_tuner *vt)
{
635
	struct usb_usbvision *usbvision = video_drvdata(file);
636

637 638 639 640 641 642 643 644 645 646
	if (!usbvision->have_tuner || vt->index)	// Only tuner 0
		return -EINVAL;
	if(usbvision->radio) {
		strcpy(vt->name, "Radio");
		vt->type = V4L2_TUNER_RADIO;
	} else {
		strcpy(vt->name, "Television");
	}
	/* Let clients fill in the remainder of this struct */
	call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
647

648 649
	return 0;
}
650

651 652 653
static int vidioc_s_tuner (struct file *file, void *priv,
				struct v4l2_tuner *vt)
{
654
	struct usb_usbvision *usbvision = video_drvdata(file);
655

656 657 658 659 660
	// Only no or one tuner for now
	if (!usbvision->have_tuner || vt->index)
		return -EINVAL;
	/* let clients handle this */
	call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
661

662 663
	return 0;
}
664

665 666 667
static int vidioc_g_frequency (struct file *file, void *priv,
				struct v4l2_frequency *freq)
{
668
	struct usb_usbvision *usbvision = video_drvdata(file);
669

670 671 672 673 674 675 676
	freq->tuner = 0; // Only one tuner
	if(usbvision->radio) {
		freq->type = V4L2_TUNER_RADIO;
	} else {
		freq->type = V4L2_TUNER_ANALOG_TV;
	}
	freq->frequency = usbvision->freq;
677

678 679
	return 0;
}
680

681 682 683
static int vidioc_s_frequency (struct file *file, void *priv,
				struct v4l2_frequency *freq)
{
684
	struct usb_usbvision *usbvision = video_drvdata(file);
685

686 687 688
	// Only no or one tuner for now
	if (!usbvision->have_tuner || freq->tuner)
		return -EINVAL;
689

690 691
	usbvision->freq = freq->frequency;
	call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
692

693 694
	return 0;
}
695

696 697
static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
{
698
	struct usb_usbvision *usbvision = video_drvdata(file);
699

700 701 702 703 704 705
	memset(a,0,sizeof(*a));
	if(usbvision->radio) {
		strcpy(a->name,"Radio");
	} else {
		strcpy(a->name, "TV");
	}
706

707 708
	return 0;
}
709

710 711 712 713 714 715
static int vidioc_s_audio (struct file *file, void *fh,
			  struct v4l2_audio *a)
{
	if(a->index) {
		return -EINVAL;
	}
716

717 718
	return 0;
}
719

720 721 722
static int vidioc_queryctrl (struct file *file, void *priv,
			    struct v4l2_queryctrl *ctrl)
{
723
	struct usb_usbvision *usbvision = video_drvdata(file);
724
	int id=ctrl->id;
725

726 727
	memset(ctrl,0,sizeof(*ctrl));
	ctrl->id=id;
728

729
	call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
730

731 732
	if (!ctrl->type)
		return -EINVAL;
733

734 735
	return 0;
}
736

737 738 739
static int vidioc_g_ctrl (struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
740
	struct usb_usbvision *usbvision = video_drvdata(file);
741
	call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
742

743 744 745 746 747 748
	return 0;
}

static int vidioc_s_ctrl (struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
749
	struct usb_usbvision *usbvision = video_drvdata(file);
750 751 752 753 754 755 756 757
	call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);

	return 0;
}

static int vidioc_reqbufs (struct file *file,
			   void *priv, struct v4l2_requestbuffers *vr)
{
758
	struct usb_usbvision *usbvision = video_drvdata(file);
759 760 761 762 763 764 765 766 767 768 769 770 771
	int ret;

	RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);

	/* Check input validity:
	   the user must do a VIDEO CAPTURE and MMAP method. */
	if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
	   (vr->memory != V4L2_MEMORY_MMAP))
		return -EINVAL;

	if(usbvision->streaming == Stream_On) {
		if ((ret = usbvision_stream_interrupt(usbvision)))
			return ret;
772
	}
773 774 775 776 777 778 779

	usbvision_frames_free(usbvision);
	usbvision_empty_framequeues(usbvision);
	vr->count = usbvision_frames_alloc(usbvision,vr->count);

	usbvision->curFrame = NULL;

780 781 782
	return 0;
}

783 784
static int vidioc_querybuf (struct file *file,
			    void *priv, struct v4l2_buffer *vb)
785
{
786
	struct usb_usbvision *usbvision = video_drvdata(file);
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
	struct usbvision_frame *frame;

	/* FIXME : must control
	   that buffers are mapped (VIDIOC_REQBUFS has been called) */
	if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
		return -EINVAL;
	}
	if(vb->index>=usbvision->num_frames)  {
		return -EINVAL;
	}
	/* Updating the corresponding frame state */
	vb->flags = 0;
	frame = &usbvision->frame[vb->index];
	if(frame->grabstate >= FrameState_Ready)
		vb->flags |= V4L2_BUF_FLAG_QUEUED;
	if(frame->grabstate >= FrameState_Done)
		vb->flags |= V4L2_BUF_FLAG_DONE;
	if(frame->grabstate == FrameState_Unused)
		vb->flags |= V4L2_BUF_FLAG_MAPPED;
	vb->memory = V4L2_MEMORY_MMAP;

	vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);

	vb->memory = V4L2_MEMORY_MMAP;
	vb->field = V4L2_FIELD_NONE;
	vb->length = usbvision->curwidth*
		usbvision->curheight*
		usbvision->palette.bytes_per_pixel;
	vb->timestamp = usbvision->frame[vb->index].timestamp;
	vb->sequence = usbvision->frame[vb->index].sequence;
	return 0;
818 819
}

820 821
static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
{
822
	struct usb_usbvision *usbvision = video_drvdata(file);
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
	struct usbvision_frame *frame;
	unsigned long lock_flags;

	/* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
	if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
		return -EINVAL;
	}
	if(vb->index>=usbvision->num_frames)  {
		return -EINVAL;
	}

	frame = &usbvision->frame[vb->index];

	if (frame->grabstate != FrameState_Unused) {
		return -EAGAIN;
	}

	/* Mark it as ready and enqueue frame */
	frame->grabstate = FrameState_Ready;
	frame->scanstate = ScanState_Scanning;
	frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */

	vb->flags &= ~V4L2_BUF_FLAG_DONE;

	/* set v4l2_format index */
	frame->v4l2_format = usbvision->palette;

	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
	list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);

	return 0;
}

static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
{
859
	struct usb_usbvision *usbvision = video_drvdata(file);
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
	int ret;
	struct usbvision_frame *f;
	unsigned long lock_flags;

	if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	if (list_empty(&(usbvision->outqueue))) {
		if (usbvision->streaming == Stream_Idle)
			return -EINVAL;
		ret = wait_event_interruptible
			(usbvision->wait_frame,
			 !list_empty(&(usbvision->outqueue)));
		if (ret)
			return ret;
	}

	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
	f = list_entry(usbvision->outqueue.next,
		       struct usbvision_frame, frame);
	list_del(usbvision->outqueue.next);
	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);

	f->grabstate = FrameState_Unused;

	vb->memory = V4L2_MEMORY_MMAP;
	vb->flags = V4L2_BUF_FLAG_MAPPED |
		V4L2_BUF_FLAG_QUEUED |
		V4L2_BUF_FLAG_DONE;
	vb->index = f->index;
	vb->sequence = f->sequence;
	vb->timestamp = f->timestamp;
	vb->field = V4L2_FIELD_NONE;
	vb->bytesused = f->scanlength;

	return 0;
}

static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
900
	struct usb_usbvision *usbvision = video_drvdata(file);
901 902 903 904 905 906 907 908 909 910 911
	int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;

	usbvision->streaming = Stream_On;
	call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);

	return 0;
}

static int vidioc_streamoff(struct file *file,
			    void *priv, enum v4l2_buf_type type)
{
912
	struct usb_usbvision *usbvision = video_drvdata(file);
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927
	int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;

	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	if(usbvision->streaming == Stream_On) {
		usbvision_stream_interrupt(usbvision);
		/* Stop all video streamings */
		call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
	}
	usbvision_empty_framequeues(usbvision);

	return 0;
}

928
static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
929 930 931 932 933 934 935 936 937 938 939 940 941
					struct v4l2_fmtdesc *vfd)
{
	if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
		return -EINVAL;
	}
	vfd->flags = 0;
	vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
	vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
	memset(vfd->reserved, 0, sizeof(vfd->reserved));
	return 0;
}

942
static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
943 944
					struct v4l2_format *vf)
{
945
	struct usb_usbvision *usbvision = video_drvdata(file);
946 947 948 949 950 951 952 953 954 955 956 957
	vf->fmt.pix.width = usbvision->curwidth;
	vf->fmt.pix.height = usbvision->curheight;
	vf->fmt.pix.pixelformat = usbvision->palette.format;
	vf->fmt.pix.bytesperline =
		usbvision->curwidth*usbvision->palette.bytes_per_pixel;
	vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
	vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
	vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */

	return 0;
}

958
static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
959 960
			       struct v4l2_format *vf)
{
961
	struct usb_usbvision *usbvision = video_drvdata(file);
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985
	int formatIdx;

	/* Find requested format in available ones */
	for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
		if(vf->fmt.pix.pixelformat ==
		   usbvision_v4l2_format[formatIdx].format) {
			usbvision->palette = usbvision_v4l2_format[formatIdx];
			break;
		}
	}
	/* robustness */
	if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
		return -EINVAL;
	}
	RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
	RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);

	vf->fmt.pix.bytesperline = vf->fmt.pix.width*
		usbvision->palette.bytes_per_pixel;
	vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;

	return 0;
}

986
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
987 988
			       struct v4l2_format *vf)
{
989
	struct usb_usbvision *usbvision = video_drvdata(file);
990 991
	int ret;

992
	if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
		return ret;
	}

	/* stop io in case it is already in progress */
	if(usbvision->streaming == Stream_On) {
		if ((ret = usbvision_stream_interrupt(usbvision)))
			return ret;
	}
	usbvision_frames_free(usbvision);
	usbvision_empty_framequeues(usbvision);

	usbvision->curFrame = NULL;

	/* by now we are committed to the new data... */
1007
	mutex_lock(&usbvision->lock);
1008
	usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1009
	mutex_unlock(&usbvision->lock);
1010 1011 1012

	return 0;
}
1013

A
Al Viro 已提交
1014
static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1015 1016
		      size_t count, loff_t *ppos)
{
1017
	struct usb_usbvision *usbvision = video_drvdata(file);
1018 1019 1020 1021 1022 1023
	int noblock = file->f_flags & O_NONBLOCK;
	unsigned long lock_flags;

	int ret,i;
	struct usbvision_frame *frame;

1024
	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1025
	       (unsigned long)count, noblock);
1026 1027 1028 1029

	if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
		return -EFAULT;

1030 1031 1032
	/* This entry point is compatible with the mmap routines
	   so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
	   to get frames or call read on the device. */
1033
	if(!usbvision->num_frames) {
1034 1035
		/* First, allocate some frames to work with
		   if this has not been done with VIDIOC_REQBUF */
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045
		usbvision_frames_free(usbvision);
		usbvision_empty_framequeues(usbvision);
		usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
	}

	if(usbvision->streaming != Stream_On) {
		/* no stream is running, make it running ! */
		usbvision->streaming = Stream_On;
		call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
	}
1046

1047 1048
	/* Then, enqueue as many frames as possible
	   (like a user of VIDIOC_QBUF would do) */
1049
	for(i=0;i<usbvision->num_frames;i++) {
1050 1051 1052 1053 1054
		frame = &usbvision->frame[i];
		if(frame->grabstate == FrameState_Unused) {
			/* Mark it as ready and enqueue frame */
			frame->grabstate = FrameState_Ready;
			frame->scanstate = ScanState_Scanning;
1055 1056
			/* Accumulated in usbvision_parse_data() */
			frame->scanlength = 0;
1057 1058 1059 1060 1061 1062

			/* set v4l2_format index */
			frame->v4l2_format = usbvision->palette;

			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
			list_add_tail(&frame->frame, &usbvision->inqueue);
1063 1064
			spin_unlock_irqrestore(&usbvision->queue_lock,
					       lock_flags);
1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
		}
	}

	/* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
	if (list_empty(&(usbvision->outqueue))) {
		if(noblock)
			return -EAGAIN;

		ret = wait_event_interruptible
			(usbvision->wait_frame,
			 !list_empty(&(usbvision->outqueue)));
		if (ret)
			return ret;
	}

	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
	frame = list_entry(usbvision->outqueue.next,
			   struct usbvision_frame, frame);
	list_del(usbvision->outqueue.next);
	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);

	/* An error returns an empty frame */
	if (frame->grabstate == FrameState_Error) {
		frame->bytes_read = 0;
		return 0;
	}

1092
	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1093
	       __func__,
1094
	       frame->index, frame->bytes_read, frame->scanlength);
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104

	/* copy bytes to user space; we allow for partials reads */
	if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
		count = frame->scanlength - frame->bytes_read;

	if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
		return -EFAULT;
	}

	frame->bytes_read += count;
1105
	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1106
	       __func__,
1107
	       (unsigned long)count, frame->bytes_read);
1108

1109
	/* For now, forget the frame if it has not been read in one shot. */
1110 1111 1112 1113
/* 	if (frame->bytes_read >= frame->scanlength) {// All data has been read */
		frame->bytes_read = 0;

		/* Mark it as available to be used again. */
1114
		frame->grabstate = FrameState_Unused;
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125
/* 	} */

	return count;
}

static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
{
	unsigned long size = vma->vm_end - vma->vm_start,
		start = vma->vm_start;
	void *pos;
	u32 i;
1126
	struct usb_usbvision *usbvision = video_drvdata(file);
1127

1128 1129
	PDEBUG(DBG_MMAP, "mmap");

1130
	mutex_lock(&usbvision->lock);
1131 1132

	if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1133
		mutex_unlock(&usbvision->lock);
1134 1135 1136 1137
		return -EFAULT;
	}

	if (!(vma->vm_flags & VM_WRITE) ||
1138
	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
1139
		mutex_unlock(&usbvision->lock);
1140 1141 1142
		return -EINVAL;
	}

1143
	for (i = 0; i < usbvision->num_frames; i++) {
1144 1145
		if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
		    vma->vm_pgoff)
1146 1147
			break;
	}
1148
	if (i == usbvision->num_frames) {
1149 1150
		PDEBUG(DBG_MMAP,
		       "mmap: user supplied mapping address is out of range");
1151
		mutex_unlock(&usbvision->lock);
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
		return -EINVAL;
	}

	/* VM_IO is eventually going to replace PageReserved altogether */
	vma->vm_flags |= VM_IO;
	vma->vm_flags |= VM_RESERVED;	/* avoid to swap out this VMA */

	pos = usbvision->frame[i].data;
	while (size > 0) {

		if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1163
			PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1164
			mutex_unlock(&usbvision->lock);
1165 1166 1167 1168 1169 1170 1171
			return -EAGAIN;
		}
		start += PAGE_SIZE;
		pos += PAGE_SIZE;
		size -= PAGE_SIZE;
	}

1172
	mutex_unlock(&usbvision->lock);
1173 1174 1175 1176 1177 1178 1179 1180
	return 0;
}


/*
 * Here comes the stuff for radio on usbvision based devices
 *
 */
1181
static int usbvision_radio_open(struct file *file)
1182
{
1183
	struct usb_usbvision *usbvision = video_drvdata(file);
1184 1185
	int errCode = 0;

1186
	PDEBUG(DBG_IO, "%s:", __func__);
1187

1188
	mutex_lock(&usbvision->lock);
1189 1190

	if (usbvision->user) {
1191
		err("%s: Someone tried to open an already opened USBVision Radio!", __func__);
1192 1193 1194 1195 1196 1197 1198
		errCode = -EBUSY;
	}
	else {
		if(PowerOnAtOpen) {
			usbvision_reset_powerOffTimer(usbvision);
			if (usbvision->power == 0) {
				usbvision_power_on(usbvision);
1199
				usbvision_i2c_register(usbvision);
1200 1201 1202
			}
		}

1203 1204 1205 1206
		/* Alternate interface 1 is is the biggest frame size */
		errCode = usbvision_set_alternate(usbvision);
		if (errCode < 0) {
			usbvision->last_error = errCode;
1207 1208
			errCode = -EBUSY;
			goto out;
1209 1210
		}

1211 1212 1213 1214 1215 1216 1217 1218 1219
		// If so far no errors then we shall start the radio
		usbvision->radio = 1;
		call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
		usbvision->user++;
	}

	if (errCode) {
		if (PowerOnAtOpen) {
1220
			usbvision_i2c_unregister(usbvision);
1221 1222 1223 1224
			usbvision_power_off(usbvision);
			usbvision->initialized = 0;
		}
	}
1225
out:
1226
	mutex_unlock(&usbvision->lock);
1227 1228 1229 1230
	return errCode;
}


1231
static int usbvision_radio_close(struct file *file)
1232
{
1233
	struct usb_usbvision *usbvision = video_drvdata(file);
1234 1235 1236 1237
	int errCode = 0;

	PDEBUG(DBG_IO, "");

1238
	mutex_lock(&usbvision->lock);
1239

1240 1241 1242 1243 1244
	/* Set packet size to 0 */
	usbvision->ifaceAlt=0;
	errCode = usb_set_interface(usbvision->dev, usbvision->iface,
				    usbvision->ifaceAlt);

1245 1246 1247 1248 1249 1250 1251 1252 1253
	usbvision_audio_off(usbvision);
	usbvision->radio=0;
	usbvision->user--;

	if (PowerOnAtOpen) {
		usbvision_set_powerOffTimer(usbvision);
		usbvision->initialized = 0;
	}

1254
	mutex_unlock(&usbvision->lock);
1255 1256

	if (usbvision->remove_pending) {
1257
		printk(KERN_INFO "%s: Final disconnect\n", __func__);
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
		usbvision_release(usbvision);
	}

	PDEBUG(DBG_IO, "success");
	return errCode;
}

/*
 * Here comes the stuff for vbi on usbvision based devices
 *
 */
1269
static int usbvision_vbi_open(struct file *file)
1270 1271
{
	/* TODO */
1272
	return -ENODEV;
1273 1274
}

1275
static int usbvision_vbi_close(struct file *file)
1276 1277
{
	/* TODO */
1278
	return -ENODEV;
1279 1280
}

1281
static long usbvision_do_vbi_ioctl(struct file *file,
1282 1283 1284
				 unsigned int cmd, void *arg)
{
	/* TODO */
1285
	return -ENOIOCTLCMD;
1286 1287
}

1288
static long usbvision_vbi_ioctl(struct file *file,
1289 1290
		       unsigned int cmd, unsigned long arg)
{
1291
	return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1292 1293 1294 1295 1296 1297 1298 1299
}


//
// Video registration stuff
//

// Video template
1300
static const struct v4l2_file_operations usbvision_fops = {
1301 1302 1303 1304 1305
	.owner             = THIS_MODULE,
	.open		= usbvision_v4l2_open,
	.release	= usbvision_v4l2_close,
	.read		= usbvision_v4l2_read,
	.mmap		= usbvision_v4l2_mmap,
1306 1307
	.ioctl		= video_ioctl2,
/* 	.poll          = video_poll, */
1308
};
1309 1310

static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1311
	.vidioc_querycap      = vidioc_querycap,
1312 1313 1314 1315
	.vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
	.vidioc_reqbufs       = vidioc_reqbufs,
	.vidioc_querybuf      = vidioc_querybuf,
	.vidioc_qbuf          = vidioc_qbuf,
	.vidioc_dqbuf         = vidioc_dqbuf,
	.vidioc_s_std         = vidioc_s_std,
	.vidioc_enum_input    = vidioc_enum_input,
	.vidioc_g_input       = vidioc_g_input,
	.vidioc_s_input       = vidioc_s_input,
	.vidioc_queryctrl     = vidioc_queryctrl,
	.vidioc_g_audio       = vidioc_g_audio,
1326
	.vidioc_s_audio       = vidioc_s_audio,
1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
	.vidioc_g_ctrl        = vidioc_g_ctrl,
	.vidioc_s_ctrl        = vidioc_s_ctrl,
	.vidioc_streamon      = vidioc_streamon,
	.vidioc_streamoff     = vidioc_streamoff,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
/*  	.vidiocgmbuf          = vidiocgmbuf, */
#endif
	.vidioc_g_tuner       = vidioc_g_tuner,
	.vidioc_s_tuner       = vidioc_s_tuner,
	.vidioc_g_frequency   = vidioc_g_frequency,
	.vidioc_s_frequency   = vidioc_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.vidioc_g_register    = vidioc_g_register,
	.vidioc_s_register    = vidioc_s_register,
#endif
1342 1343 1344 1345 1346 1347 1348 1349
};

static struct video_device usbvision_video_template = {
	.fops		= &usbvision_fops,
	.ioctl_ops 	= &usbvision_ioctl_ops,
	.name           = "usbvision-video",
	.release	= video_device_release,
	.minor		= -1,
1350 1351
	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1352 1353 1354 1355
};


// Radio template
1356
static const struct v4l2_file_operations usbvision_radio_fops = {
1357 1358 1359
	.owner             = THIS_MODULE,
	.open		= usbvision_radio_open,
	.release	= usbvision_radio_close,
1360
	.ioctl		= video_ioctl2,
1361 1362
};

1363
static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1364 1365 1366 1367 1368 1369
	.vidioc_querycap      = vidioc_querycap,
	.vidioc_enum_input    = vidioc_enum_input,
	.vidioc_g_input       = vidioc_g_input,
	.vidioc_s_input       = vidioc_s_input,
	.vidioc_queryctrl     = vidioc_queryctrl,
	.vidioc_g_audio       = vidioc_g_audio,
1370
	.vidioc_s_audio       = vidioc_s_audio,
1371 1372 1373 1374 1375 1376
	.vidioc_g_ctrl        = vidioc_g_ctrl,
	.vidioc_s_ctrl        = vidioc_s_ctrl,
	.vidioc_g_tuner       = vidioc_g_tuner,
	.vidioc_s_tuner       = vidioc_s_tuner,
	.vidioc_g_frequency   = vidioc_g_frequency,
	.vidioc_s_frequency   = vidioc_s_frequency,
1377 1378 1379 1380 1381 1382 1383 1384
};

static struct video_device usbvision_radio_template = {
	.fops		= &usbvision_radio_fops,
	.name           = "usbvision-radio",
	.release	= video_device_release,
	.minor		= -1,
	.ioctl_ops 	= &usbvision_radio_ioctl_ops,
1385 1386 1387

	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1388 1389 1390
};

// vbi template
1391
static const struct v4l2_file_operations usbvision_vbi_fops = {
1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414
	.owner             = THIS_MODULE,
	.open		= usbvision_vbi_open,
	.release	= usbvision_vbi_close,
	.ioctl		= usbvision_vbi_ioctl,
};

static struct video_device usbvision_vbi_template=
{
	.fops		= &usbvision_vbi_fops,
	.release	= video_device_release,
	.name           = "usbvision-vbi",
	.minor		= -1,
};


static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
					struct video_device *vdev_template,
					char *name)
{
	struct usb_device *usb_dev = usbvision->dev;
	struct video_device *vdev;

	if (usb_dev == NULL) {
1415
		err("%s: usbvision->dev is not set", __func__);
1416 1417 1418 1419 1420 1421 1422 1423 1424
		return NULL;
	}

	vdev = video_device_alloc();
	if (NULL == vdev) {
		return NULL;
	}
	*vdev = *vdev_template;
//	vdev->minor   = -1;
1425
	vdev->parent  = &usb_dev->dev;
1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
	snprintf(vdev->name, sizeof(vdev->name), "%s", name);
	video_set_drvdata(vdev, usbvision);
	return vdev;
}

// unregister video4linux devices
static void usbvision_unregister_video(struct usb_usbvision *usbvision)
{
	// vbi Device:
	if (usbvision->vbi) {
1436
		PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1437
		       usbvision->vbi->num);
1438 1439
		if (usbvision->vbi->minor != -1) {
			video_unregister_device(usbvision->vbi);
1440
		} else {
1441 1442 1443 1444 1445 1446 1447
			video_device_release(usbvision->vbi);
		}
		usbvision->vbi = NULL;
	}

	// Radio Device:
	if (usbvision->rdev) {
1448
		PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1449
		       usbvision->rdev->num);
1450 1451
		if (usbvision->rdev->minor != -1) {
			video_unregister_device(usbvision->rdev);
1452
		} else {
1453 1454 1455 1456 1457 1458 1459
			video_device_release(usbvision->rdev);
		}
		usbvision->rdev = NULL;
	}

	// Video Device:
	if (usbvision->vdev) {
1460
		PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1461
		       usbvision->vdev->num);
1462 1463
		if (usbvision->vdev->minor != -1) {
			video_unregister_device(usbvision->vdev);
1464
		} else {
1465 1466 1467 1468 1469 1470 1471 1472 1473 1474
			video_device_release(usbvision->vdev);
		}
		usbvision->vdev = NULL;
	}
}

// register video4linux devices
static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
{
	// Video Device:
1475 1476 1477
	usbvision->vdev = usbvision_vdev_init(usbvision,
					      &usbvision_video_template,
					      "USBVision Video");
1478 1479 1480
	if (usbvision->vdev == NULL) {
		goto err_exit;
	}
1481 1482 1483
	if (video_register_device(usbvision->vdev,
				  VFL_TYPE_GRABBER,
				  video_nr)<0) {
1484 1485
		goto err_exit;
	}
1486
	printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1487
	       usbvision->nr, usbvision->vdev->num);
1488 1489 1490 1491

	// Radio Device:
	if (usbvision_device_data[usbvision->DevModel].Radio) {
		// usbvision has radio
1492 1493 1494
		usbvision->rdev = usbvision_vdev_init(usbvision,
						      &usbvision_radio_template,
						      "USBVision Radio");
1495 1496 1497
		if (usbvision->rdev == NULL) {
			goto err_exit;
		}
1498 1499 1500
		if (video_register_device(usbvision->rdev,
					  VFL_TYPE_RADIO,
					  radio_nr)<0) {
1501 1502
			goto err_exit;
		}
1503
		printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1504
		       usbvision->nr, usbvision->rdev->num);
1505 1506 1507
	}
	// vbi Device:
	if (usbvision_device_data[usbvision->DevModel].vbi) {
1508 1509 1510
		usbvision->vbi = usbvision_vdev_init(usbvision,
						     &usbvision_vbi_template,
						     "USBVision VBI");
1511 1512 1513
		if (usbvision->vdev == NULL) {
			goto err_exit;
		}
1514 1515 1516
		if (video_register_device(usbvision->vbi,
					  VFL_TYPE_VBI,
					  vbi_nr)<0) {
1517 1518
			goto err_exit;
		}
1519
		printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1520
		       usbvision->nr, usbvision->vbi->num);
1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533
	}
	// all done
	return 0;

 err_exit:
	err("USBVision[%d]: video_register_device() failed", usbvision->nr);
	usbvision_unregister_video(usbvision);
	return -1;
}

/*
 * usbvision_alloc()
 *
1534 1535
 * This code allocates the struct usb_usbvision.
 * It is filled with default values.
1536 1537 1538 1539 1540 1541 1542 1543
 *
 * Returns NULL on error, a pointer to usb_usbvision else.
 *
 */
static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
{
	struct usb_usbvision *usbvision;

1544 1545
	if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
	    NULL) {
1546 1547 1548 1549 1550
		goto err_exit;
	}

	usbvision->dev = dev;

1551
	mutex_init(&usbvision->lock);	/* available */
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584

	// prepare control urb for control messages during interrupts
	usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
	if (usbvision->ctrlUrb == NULL) {
		goto err_exit;
	}
	init_waitqueue_head(&usbvision->ctrlUrb_wq);

	usbvision_init_powerOffTimer(usbvision);

	return usbvision;

err_exit:
	if (usbvision && usbvision->ctrlUrb) {
		usb_free_urb(usbvision->ctrlUrb);
	}
	if (usbvision) {
		kfree(usbvision);
	}
	return NULL;
}

/*
 * usbvision_release()
 *
 * This code does final release of struct usb_usbvision. This happens
 * after the device is disconnected -and- all clients closed their files.
 *
 */
static void usbvision_release(struct usb_usbvision *usbvision)
{
	PDEBUG(DBG_PROBE, "");

1585
	mutex_lock(&usbvision->lock);
1586 1587 1588 1589 1590

	usbvision_reset_powerOffTimer(usbvision);

	usbvision->initialized = 0;

1591
	mutex_unlock(&usbvision->lock);
1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605

	usbvision_remove_sysfs(usbvision->vdev);
	usbvision_unregister_video(usbvision);

	if (usbvision->ctrlUrb) {
		usb_free_urb(usbvision->ctrlUrb);
	}

	kfree(usbvision);

	PDEBUG(DBG_PROBE, "success");
}


1606
/*********************** usb interface **********************************/
1607 1608 1609

static void usbvision_configure_video(struct usb_usbvision *usbvision)
{
1610
	int model;
1611 1612 1613 1614 1615 1616 1617

	if (usbvision == NULL)
		return;

	model = usbvision->DevModel;
	usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;

1618
	if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1619 1620
		usbvision->Vin_Reg2_Preset =
			usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1621 1622 1623 1624
	} else {
		usbvision->Vin_Reg2_Preset = 0;
	}

1625
	usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1626 1627 1628 1629 1630

	usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
	usbvision->ctl_input = 0;

	/* This should be here to make i2c clients to be able to register */
1631 1632
	/* first switch off audio */
	usbvision_audio_off(usbvision);
1633
	if (!PowerOnAtOpen) {
1634 1635
		/* and then power up the noisy tuner */
		usbvision_power_on(usbvision);
1636
		usbvision_i2c_register(usbvision);
1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
	}
}

/*
 * usbvision_probe()
 *
 * This procedure queries device descriptor and accepts the interface
 * if it looks like USBVISION video device
 *
 */
1647 1648
static int __devinit usbvision_probe(struct usb_interface *intf,
				     const struct usb_device_id *devid)
1649
{
1650 1651
	struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
	struct usb_interface *uif;
1652 1653 1654 1655
	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
	const struct usb_host_interface *interface;
	struct usb_usbvision *usbvision = NULL;
	const struct usb_endpoint_descriptor *endpoint;
1656
	int model,i;
1657 1658

	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1659 1660
				dev->descriptor.idVendor,
				dev->descriptor.idProduct, ifnum);
1661

1662
	model = devid->driver_info;
1663
	if ( (model<0) || (model>=usbvision_device_data_size) ) {
1664
		PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1665 1666
		return -ENODEV;
	}
1667
	printk(KERN_INFO "%s: %s found\n", __func__,
1668
				usbvision_device_data[model].ModelString);
1669 1670 1671

	if (usbvision_device_data[model].Interface >= 0) {
		interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1672
	} else {
1673 1674 1675
		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
	}
	endpoint = &interface->endpoint[1].desc;
1676
	if (usb_endpoint_type(endpoint) !=
1677 1678
	    USB_ENDPOINT_XFER_ISOC) {
		err("%s: interface %d. has non-ISO endpoint!",
1679
		    __func__, ifnum);
1680
		err("%s: Endpoint attributes %d",
1681
		    __func__, endpoint->bmAttributes);
1682 1683
		return -ENODEV;
	}
1684
	if (usb_endpoint_dir_out(endpoint)) {
1685
		err("%s: interface %d. has ISO OUT endpoint!",
1686
		    __func__, ifnum);
1687 1688 1689 1690
		return -ENODEV;
	}

	if ((usbvision = usbvision_alloc(dev)) == NULL) {
1691
		err("%s: couldn't allocate USBVision struct", __func__);
1692 1693
		return -ENOMEM;
	}
1694

1695 1696
	if (dev->descriptor.bNumConfigurations > 1) {
		usbvision->bridgeType = BRIDGE_NT1004;
1697
	} else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1698
		usbvision->bridgeType = BRIDGE_NT1005;
1699
	} else {
1700 1701 1702 1703
		usbvision->bridgeType = BRIDGE_NT1003;
	}
	PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);

1704
	mutex_lock(&usbvision->lock);
1705

1706 1707 1708 1709 1710 1711 1712 1713 1714
	/* compute alternate max packet sizes */
	uif = dev->actconfig->interface[0];

	usbvision->num_alt=uif->num_altsetting;
	PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
	usbvision->alt_max_pkt_size = kmalloc(32*
					      usbvision->num_alt,GFP_KERNEL);
	if (usbvision->alt_max_pkt_size == NULL) {
		err("usbvision: out of memory!\n");
1715
		mutex_unlock(&usbvision->lock);
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728
		return -ENOMEM;
	}

	for (i = 0; i < usbvision->num_alt ; i++) {
		u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
				      wMaxPacketSize);
		usbvision->alt_max_pkt_size[i] =
			(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
		PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
		       usbvision->alt_max_pkt_size[i]);
	}


1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740
	usbvision->nr = usbvision_nr++;

	usbvision->have_tuner = usbvision_device_data[model].Tuner;
	if (usbvision->have_tuner) {
		usbvision->tuner_type = usbvision_device_data[model].TunerType;
	}

	usbvision->tuner_addr = ADDR_UNSET;

	usbvision->DevModel = model;
	usbvision->remove_pending = 0;
	usbvision->iface = ifnum;
1741
	usbvision->ifaceAlt = 0;
1742 1743 1744 1745 1746 1747 1748
	usbvision->video_endp = endpoint->bEndpointAddress;
	usbvision->isocPacketSize = 0;
	usbvision->usb_bandwidth = 0;
	usbvision->user = 0;
	usbvision->streaming = Stream_Off;
	usbvision_register_video(usbvision);
	usbvision_configure_video(usbvision);
1749
	mutex_unlock(&usbvision->lock);
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774


	usb_set_intfdata (intf, usbvision);
	usbvision_create_sysfs(usbvision->vdev);

	PDEBUG(DBG_PROBE, "success");
	return 0;
}


/*
 * usbvision_disconnect()
 *
 * This procedure stops all driver activity, deallocates interface-private
 * structure (pointed by 'ptr') and after that driver should be removable
 * with no ill consequences.
 *
 */
static void __devexit usbvision_disconnect(struct usb_interface *intf)
{
	struct usb_usbvision *usbvision = usb_get_intfdata(intf);

	PDEBUG(DBG_PROBE, "");

	if (usbvision == NULL) {
1775
		err("%s: usb_get_intfdata() failed", __func__);
1776 1777 1778 1779
		return;
	}
	usb_set_intfdata (intf, NULL);

1780
	mutex_lock(&usbvision->lock);
1781 1782 1783 1784 1785

	// At this time we ask to cancel outstanding URBs
	usbvision_stop_isoc(usbvision);

	if (usbvision->power) {
1786
		usbvision_i2c_unregister(usbvision);
1787 1788 1789 1790 1791 1792 1793
		usbvision_power_off(usbvision);
	}
	usbvision->remove_pending = 1;	// Now all ISO data will be ignored

	usb_put_dev(usbvision->dev);
	usbvision->dev = NULL;	// USB device is no more

1794
	mutex_unlock(&usbvision->lock);
1795 1796

	if (usbvision->user) {
1797
		printk(KERN_INFO "%s: In use, disconnect pending\n",
1798
		       __func__);
1799 1800
		wake_up_interruptible(&usbvision->wait_frame);
		wake_up_interruptible(&usbvision->wait_stream);
1801
	} else {
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		usbvision_release(usbvision);
	}

	PDEBUG(DBG_PROBE, "success");
}

static struct usb_driver usbvision_driver = {
	.name		= "usbvision",
	.id_table	= usbvision_table,
	.probe		= usbvision_probe,
	.disconnect	= usbvision_disconnect
};

/*
 * usbvision_init()
 *
 * This code is run to initialize the driver.
 *
 */
static int __init usbvision_init(void)
{
	int errCode;

	PDEBUG(DBG_PROBE, "");

	PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
	PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
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	PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
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	/* disable planar mode support unless compression enabled */
	if (isocMode != ISOC_MODE_COMPRESS ) {
		// FIXME : not the right way to set supported flag
		usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
		usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
	}

	errCode = usb_register(&usbvision_driver);

	if (errCode == 0) {
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		printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
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		PDEBUG(DBG_PROBE, "success");
	}
	return errCode;
}

static void __exit usbvision_exit(void)
{
 PDEBUG(DBG_PROBE, "");

 usb_deregister(&usbvision_driver);
 PDEBUG(DBG_PROBE, "success");
}

module_init(usbvision_init);
module_exit(usbvision_exit);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */