usbvision-video.c 49.6 KB
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/*
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 * USB USBVISION Video device driver 0.9.10
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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/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
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#define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
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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)
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		call_all(usbvision, core, 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)
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		call_all(usbvision, core, 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)
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		call_all(usbvision, core, 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)
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		call_all(usbvision, core, 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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	dev_err(&vdev->dev, "%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,
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				struct v4l2_dbg_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))
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		return -EINVAL;
	/* NT100x has a 8-bit register space */
	errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
	if (errCode < 0) {
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		dev_err(&usbvision->vdev->dev,
			"%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
				__func__, errCode);
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		return errCode;
	}
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	reg->val = errCode;
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	reg->size = 1;
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	return 0;
}
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static int vidioc_s_register (struct file *file, void *priv,
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				struct v4l2_dbg_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))
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		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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		dev_err(&usbvision->vdev->dev,
			"%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
				__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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	usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
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	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)
{
594
	struct usb_usbvision *usbvision = video_drvdata(file);
595

596 597 598
	*input = usbvision->ctl_input;
	return 0;
}
599

600 601
static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
{
602
	struct usb_usbvision *usbvision = video_drvdata(file);
603

604 605
	if ((input >= usbvision->video_inputs) || (input < 0) )
		return -EINVAL;
606

607
	mutex_lock(&usbvision->lock);
608
	usbvision_muxsel(usbvision, input);
609 610 611 612
	usbvision_set_input(usbvision);
	usbvision_set_output(usbvision,
			     usbvision->curwidth,
			     usbvision->curheight);
613
	mutex_unlock(&usbvision->lock);
614 615
	return 0;
}
616

617 618
static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
{
619 620
	struct usb_usbvision *usbvision = video_drvdata(file);

621
	usbvision->tvnormId=*id;
622

623
	mutex_lock(&usbvision->lock);
624
	call_all(usbvision, core, 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
	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 */
646
	call_all(usbvision, tuner, 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
	// Only no or one tuner for now
	if (!usbvision->have_tuner || vt->index)
		return -EINVAL;
	/* let clients handle this */
660
	call_all(usbvision, tuner, 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
	usbvision->freq = freq->frequency;
691
	call_all(usbvision, tuner, 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
	if(usbvision->radio) {
		strcpy(a->name,"Radio");
	} else {
		strcpy(a->name, "TV");
	}
705

706 707
	return 0;
}
708

709 710 711 712 713 714
static int vidioc_s_audio (struct file *file, void *fh,
			  struct v4l2_audio *a)
{
	if(a->index) {
		return -EINVAL;
	}
715

716 717
	return 0;
}
718

719 720 721
static int vidioc_queryctrl (struct file *file, void *priv,
			    struct v4l2_queryctrl *ctrl)
{
722
	struct usb_usbvision *usbvision = video_drvdata(file);
723

724
	call_all(usbvision, core, queryctrl, ctrl);
725

726 727
	if (!ctrl->type)
		return -EINVAL;
728

729 730
	return 0;
}
731

732 733 734
static int vidioc_g_ctrl (struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
735
	struct usb_usbvision *usbvision = video_drvdata(file);
736
	call_all(usbvision, core, g_ctrl, ctrl);
737

738 739 740 741 742 743
	return 0;
}

static int vidioc_s_ctrl (struct file *file, void *priv,
				struct v4l2_control *ctrl)
{
744
	struct usb_usbvision *usbvision = video_drvdata(file);
745
	call_all(usbvision, core, s_ctrl, ctrl);
746 747 748 749 750 751 752

	return 0;
}

static int vidioc_reqbufs (struct file *file,
			   void *priv, struct v4l2_requestbuffers *vr)
{
753
	struct usb_usbvision *usbvision = video_drvdata(file);
754 755 756 757 758 759
	int ret;

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

	/* Check input validity:
	   the user must do a VIDEO CAPTURE and MMAP method. */
760
	if (vr->memory != V4L2_MEMORY_MMAP)
761 762 763 764 765
		return -EINVAL;

	if(usbvision->streaming == Stream_On) {
		if ((ret = usbvision_stream_interrupt(usbvision)))
			return ret;
766
	}
767 768 769 770 771 772 773

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

	usbvision->curFrame = NULL;

774 775 776
	return 0;
}

777 778
static int vidioc_querybuf (struct file *file,
			    void *priv, struct v4l2_buffer *vb)
779
{
780
	struct usb_usbvision *usbvision = video_drvdata(file);
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
	struct usbvision_frame *frame;

	/* FIXME : must control
	   that buffers are mapped (VIDIOC_REQBUFS has been called) */
	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;
809 810
}

811 812
static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
{
813
	struct usb_usbvision *usbvision = video_drvdata(file);
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846
	struct usbvision_frame *frame;
	unsigned long lock_flags;

	/* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
	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)
{
847
	struct usb_usbvision *usbvision = video_drvdata(file);
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884
	int ret;
	struct usbvision_frame *f;
	unsigned long lock_flags;

	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)
{
885
	struct usb_usbvision *usbvision = video_drvdata(file);
886 887

	usbvision->streaming = Stream_On;
888
	call_all(usbvision, video, s_stream, 1);
889 890 891 892 893 894 895

	return 0;
}

static int vidioc_streamoff(struct file *file,
			    void *priv, enum v4l2_buf_type type)
{
896
	struct usb_usbvision *usbvision = video_drvdata(file);
897 898 899 900 901 902 903

	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	if(usbvision->streaming == Stream_On) {
		usbvision_stream_interrupt(usbvision);
		/* Stop all video streamings */
904
		call_all(usbvision, video, s_stream, 0);
905 906 907 908 909 910
	}
	usbvision_empty_framequeues(usbvision);

	return 0;
}

911
static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
912 913 914 915 916 917 918 919 920 921
					struct v4l2_fmtdesc *vfd)
{
	if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
		return -EINVAL;
	}
	strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
	vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
	return 0;
}

922
static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
923 924
					struct v4l2_format *vf)
{
925
	struct usb_usbvision *usbvision = video_drvdata(file);
926 927 928 929 930 931 932 933 934 935 936 937
	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;
}

938
static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
939 940
			       struct v4l2_format *vf)
{
941
	struct usb_usbvision *usbvision = video_drvdata(file);
942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
	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;
}

966
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
967 968
			       struct v4l2_format *vf)
{
969
	struct usb_usbvision *usbvision = video_drvdata(file);
970 971
	int ret;

972
	if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
973 974 975 976 977 978 979 980 981 982 983 984 985 986
		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... */
987
	mutex_lock(&usbvision->lock);
988
	usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
989
	mutex_unlock(&usbvision->lock);
990 991 992

	return 0;
}
993

A
Al Viro 已提交
994
static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
995 996
		      size_t count, loff_t *ppos)
{
997
	struct usb_usbvision *usbvision = video_drvdata(file);
998 999 1000 1001 1002 1003
	int noblock = file->f_flags & O_NONBLOCK;
	unsigned long lock_flags;

	int ret,i;
	struct usbvision_frame *frame;

1004
	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1005
	       (unsigned long)count, noblock);
1006 1007 1008 1009

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

1010 1011 1012
	/* 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. */
1013
	if(!usbvision->num_frames) {
1014 1015
		/* First, allocate some frames to work with
		   if this has not been done with VIDIOC_REQBUF */
1016 1017 1018 1019 1020 1021 1022 1023
		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;
1024
		call_all(usbvision, video, s_stream, 1);
1025
	}
1026

1027 1028
	/* Then, enqueue as many frames as possible
	   (like a user of VIDIOC_QBUF would do) */
1029
	for(i=0;i<usbvision->num_frames;i++) {
1030 1031 1032 1033 1034
		frame = &usbvision->frame[i];
		if(frame->grabstate == FrameState_Unused) {
			/* Mark it as ready and enqueue frame */
			frame->grabstate = FrameState_Ready;
			frame->scanstate = ScanState_Scanning;
1035 1036
			/* Accumulated in usbvision_parse_data() */
			frame->scanlength = 0;
1037 1038 1039 1040 1041 1042

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

			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
			list_add_tail(&frame->frame, &usbvision->inqueue);
1043 1044
			spin_unlock_irqrestore(&usbvision->queue_lock,
					       lock_flags);
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
		}
	}

	/* 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;
	}

1072
	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1073
	       __func__,
1074
	       frame->index, frame->bytes_read, frame->scanlength);
1075 1076 1077 1078 1079 1080 1081 1082 1083 1084

	/* 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;
1085
	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1086
	       __func__,
1087
	       (unsigned long)count, frame->bytes_read);
1088

1089
	/* For now, forget the frame if it has not been read in one shot. */
1090 1091 1092 1093
/* 	if (frame->bytes_read >= frame->scanlength) {// All data has been read */
		frame->bytes_read = 0;

		/* Mark it as available to be used again. */
1094
		frame->grabstate = FrameState_Unused;
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105
/* 	} */

	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;
1106
	struct usb_usbvision *usbvision = video_drvdata(file);
1107

1108 1109
	PDEBUG(DBG_MMAP, "mmap");

1110
	mutex_lock(&usbvision->lock);
1111 1112

	if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1113
		mutex_unlock(&usbvision->lock);
1114 1115 1116 1117
		return -EFAULT;
	}

	if (!(vma->vm_flags & VM_WRITE) ||
1118
	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
1119
		mutex_unlock(&usbvision->lock);
1120 1121 1122
		return -EINVAL;
	}

1123
	for (i = 0; i < usbvision->num_frames; i++) {
1124 1125
		if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
		    vma->vm_pgoff)
1126 1127
			break;
	}
1128
	if (i == usbvision->num_frames) {
1129 1130
		PDEBUG(DBG_MMAP,
		       "mmap: user supplied mapping address is out of range");
1131
		mutex_unlock(&usbvision->lock);
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
		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))) {
1143
			PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1144
			mutex_unlock(&usbvision->lock);
1145 1146 1147 1148 1149 1150 1151
			return -EAGAIN;
		}
		start += PAGE_SIZE;
		pos += PAGE_SIZE;
		size -= PAGE_SIZE;
	}

1152
	mutex_unlock(&usbvision->lock);
1153 1154 1155 1156 1157 1158 1159 1160
	return 0;
}


/*
 * Here comes the stuff for radio on usbvision based devices
 *
 */
1161
static int usbvision_radio_open(struct file *file)
1162
{
1163
	struct usb_usbvision *usbvision = video_drvdata(file);
1164 1165
	int errCode = 0;

1166
	PDEBUG(DBG_IO, "%s:", __func__);
1167

1168
	mutex_lock(&usbvision->lock);
1169 1170

	if (usbvision->user) {
1171 1172 1173
		dev_err(&usbvision->rdev->dev,
			"%s: Someone tried to open an already opened USBVision Radio!\n",
				__func__);
1174 1175 1176 1177 1178 1179 1180
		errCode = -EBUSY;
	}
	else {
		if(PowerOnAtOpen) {
			usbvision_reset_powerOffTimer(usbvision);
			if (usbvision->power == 0) {
				usbvision_power_on(usbvision);
1181
				usbvision_i2c_register(usbvision);
1182 1183 1184
			}
		}

1185 1186 1187 1188
		/* Alternate interface 1 is is the biggest frame size */
		errCode = usbvision_set_alternate(usbvision);
		if (errCode < 0) {
			usbvision->last_error = errCode;
1189 1190
			errCode = -EBUSY;
			goto out;
1191 1192
		}

1193 1194
		// If so far no errors then we shall start the radio
		usbvision->radio = 1;
1195
		call_all(usbvision, tuner, s_radio);
1196 1197 1198 1199 1200 1201
		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
		usbvision->user++;
	}

	if (errCode) {
		if (PowerOnAtOpen) {
1202
			usbvision_i2c_unregister(usbvision);
1203 1204 1205 1206
			usbvision_power_off(usbvision);
			usbvision->initialized = 0;
		}
	}
1207
out:
1208
	mutex_unlock(&usbvision->lock);
1209 1210 1211 1212
	return errCode;
}


1213
static int usbvision_radio_close(struct file *file)
1214
{
1215
	struct usb_usbvision *usbvision = video_drvdata(file);
1216 1217 1218 1219
	int errCode = 0;

	PDEBUG(DBG_IO, "");

1220
	mutex_lock(&usbvision->lock);
1221

1222 1223 1224 1225 1226
	/* Set packet size to 0 */
	usbvision->ifaceAlt=0;
	errCode = usb_set_interface(usbvision->dev, usbvision->iface,
				    usbvision->ifaceAlt);

1227 1228 1229 1230 1231 1232 1233 1234 1235
	usbvision_audio_off(usbvision);
	usbvision->radio=0;
	usbvision->user--;

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

1236
	mutex_unlock(&usbvision->lock);
1237 1238

	if (usbvision->remove_pending) {
1239
		printk(KERN_INFO "%s: Final disconnect\n", __func__);
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
		usbvision_release(usbvision);
	}

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

/*
 * Here comes the stuff for vbi on usbvision based devices
 *
 */
1251
static int usbvision_vbi_open(struct file *file)
1252 1253
{
	/* TODO */
1254
	return -ENODEV;
1255 1256
}

1257
static int usbvision_vbi_close(struct file *file)
1258 1259
{
	/* TODO */
1260
	return -ENODEV;
1261 1262
}

1263
static long usbvision_do_vbi_ioctl(struct file *file,
1264 1265 1266
				 unsigned int cmd, void *arg)
{
	/* TODO */
1267
	return -ENOIOCTLCMD;
1268 1269
}

1270
static long usbvision_vbi_ioctl(struct file *file,
1271 1272
		       unsigned int cmd, unsigned long arg)
{
1273
	return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1274 1275 1276 1277 1278 1279 1280 1281
}


//
// Video registration stuff
//

// Video template
1282
static const struct v4l2_file_operations usbvision_fops = {
1283 1284 1285 1286 1287
	.owner             = THIS_MODULE,
	.open		= usbvision_v4l2_open,
	.release	= usbvision_v4l2_close,
	.read		= usbvision_v4l2_read,
	.mmap		= usbvision_v4l2_mmap,
1288 1289
	.ioctl		= video_ioctl2,
/* 	.poll          = video_poll, */
1290
};
1291 1292

static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1293
	.vidioc_querycap      = vidioc_querycap,
1294 1295 1296 1297
	.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,
1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
	.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,
1308
	.vidioc_s_audio       = vidioc_s_audio,
1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
	.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
1324 1325 1326 1327 1328 1329 1330 1331
};

static struct video_device usbvision_video_template = {
	.fops		= &usbvision_fops,
	.ioctl_ops 	= &usbvision_ioctl_ops,
	.name           = "usbvision-video",
	.release	= video_device_release,
	.minor		= -1,
1332 1333
	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1334 1335 1336 1337
};


// Radio template
1338
static const struct v4l2_file_operations usbvision_radio_fops = {
1339 1340 1341
	.owner             = THIS_MODULE,
	.open		= usbvision_radio_open,
	.release	= usbvision_radio_close,
1342
	.ioctl		= video_ioctl2,
1343 1344
};

1345
static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1346 1347 1348 1349 1350 1351
	.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,
1352
	.vidioc_s_audio       = vidioc_s_audio,
1353 1354 1355 1356 1357 1358
	.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,
1359 1360 1361 1362 1363 1364 1365 1366
};

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,
1367 1368 1369

	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1370 1371 1372
};

// vbi template
1373
static const struct v4l2_file_operations usbvision_vbi_fops = {
1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
	.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) {
1397 1398
		dev_err(&usbvision->dev->dev,
			"%s: usbvision->dev is not set\n", __func__);
1399 1400 1401 1402 1403 1404 1405 1406 1407
		return NULL;
	}

	vdev = video_device_alloc();
	if (NULL == vdev) {
		return NULL;
	}
	*vdev = *vdev_template;
//	vdev->minor   = -1;
1408
	vdev->v4l2_dev = &usbvision->v4l2_dev;
1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
	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) {
1419
		PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1420
		       usbvision->vbi->num);
1421 1422
		if (usbvision->vbi->minor != -1) {
			video_unregister_device(usbvision->vbi);
1423
		} else {
1424 1425 1426 1427 1428 1429 1430
			video_device_release(usbvision->vbi);
		}
		usbvision->vbi = NULL;
	}

	// Radio Device:
	if (usbvision->rdev) {
1431
		PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1432
		       usbvision->rdev->num);
1433 1434
		if (usbvision->rdev->minor != -1) {
			video_unregister_device(usbvision->rdev);
1435
		} else {
1436 1437 1438 1439 1440 1441 1442
			video_device_release(usbvision->rdev);
		}
		usbvision->rdev = NULL;
	}

	// Video Device:
	if (usbvision->vdev) {
1443
		PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1444
		       usbvision->vdev->num);
1445 1446
		if (usbvision->vdev->minor != -1) {
			video_unregister_device(usbvision->vdev);
1447
		} else {
1448 1449 1450 1451 1452 1453 1454 1455 1456 1457
			video_device_release(usbvision->vdev);
		}
		usbvision->vdev = NULL;
	}
}

// register video4linux devices
static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
{
	// Video Device:
1458 1459 1460
	usbvision->vdev = usbvision_vdev_init(usbvision,
					      &usbvision_video_template,
					      "USBVision Video");
1461 1462 1463
	if (usbvision->vdev == NULL) {
		goto err_exit;
	}
1464 1465 1466
	if (video_register_device(usbvision->vdev,
				  VFL_TYPE_GRABBER,
				  video_nr)<0) {
1467 1468
		goto err_exit;
	}
1469
	printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1470
	       usbvision->nr, usbvision->vdev->num);
1471 1472 1473 1474

	// Radio Device:
	if (usbvision_device_data[usbvision->DevModel].Radio) {
		// usbvision has radio
1475 1476 1477
		usbvision->rdev = usbvision_vdev_init(usbvision,
						      &usbvision_radio_template,
						      "USBVision Radio");
1478 1479 1480
		if (usbvision->rdev == NULL) {
			goto err_exit;
		}
1481 1482 1483
		if (video_register_device(usbvision->rdev,
					  VFL_TYPE_RADIO,
					  radio_nr)<0) {
1484 1485
			goto err_exit;
		}
1486
		printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1487
		       usbvision->nr, usbvision->rdev->num);
1488 1489 1490
	}
	// vbi Device:
	if (usbvision_device_data[usbvision->DevModel].vbi) {
1491 1492 1493
		usbvision->vbi = usbvision_vdev_init(usbvision,
						     &usbvision_vbi_template,
						     "USBVision VBI");
1494 1495 1496
		if (usbvision->vdev == NULL) {
			goto err_exit;
		}
1497 1498 1499
		if (video_register_device(usbvision->vbi,
					  VFL_TYPE_VBI,
					  vbi_nr)<0) {
1500 1501
			goto err_exit;
		}
1502
		printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1503
		       usbvision->nr, usbvision->vbi->num);
1504 1505 1506 1507 1508
	}
	// all done
	return 0;

 err_exit:
1509 1510 1511
	dev_err(&usbvision->dev->dev,
		"USBVision[%d]: video_register_device() failed\n",
			usbvision->nr);
1512 1513 1514 1515 1516 1517 1518
	usbvision_unregister_video(usbvision);
	return -1;
}

/*
 * usbvision_alloc()
 *
1519 1520
 * This code allocates the struct usb_usbvision.
 * It is filled with default values.
1521 1522 1523 1524
 *
 * Returns NULL on error, a pointer to usb_usbvision else.
 *
 */
1525 1526
static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
					     struct usb_interface *intf)
1527 1528 1529
{
	struct usb_usbvision *usbvision;

1530 1531 1532
	usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
	if (usbvision == NULL)
		return NULL;
1533 1534

	usbvision->dev = dev;
1535
	if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1536
		goto err_free;
1537

1538
	mutex_init(&usbvision->lock);	/* available */
1539 1540 1541

	// prepare control urb for control messages during interrupts
	usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1542 1543
	if (usbvision->ctrlUrb == NULL)
		goto err_unreg;
1544 1545 1546 1547 1548 1549
	init_waitqueue_head(&usbvision->ctrlUrb_wq);

	usbvision_init_powerOffTimer(usbvision);

	return usbvision;

1550 1551 1552 1553
err_unreg:
	v4l2_device_unregister(&usbvision->v4l2_dev);
err_free:
	kfree(usbvision);
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567
	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, "");

1568
	mutex_lock(&usbvision->lock);
1569 1570 1571 1572 1573

	usbvision_reset_powerOffTimer(usbvision);

	usbvision->initialized = 0;

1574
	mutex_unlock(&usbvision->lock);
1575 1576 1577 1578 1579 1580 1581 1582

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

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

1583
	v4l2_device_unregister(&usbvision->v4l2_dev);
1584 1585 1586 1587 1588 1589
	kfree(usbvision);

	PDEBUG(DBG_PROBE, "success");
}


1590
/*********************** usb interface **********************************/
1591 1592 1593

static void usbvision_configure_video(struct usb_usbvision *usbvision)
{
1594
	int model;
1595 1596 1597 1598 1599 1600 1601

	if (usbvision == NULL)
		return;

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

1602
	if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1603 1604
		usbvision->Vin_Reg2_Preset =
			usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1605 1606 1607 1608
	} else {
		usbvision->Vin_Reg2_Preset = 0;
	}

1609
	usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1610 1611 1612 1613 1614

	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 */
1615 1616
	/* first switch off audio */
	usbvision_audio_off(usbvision);
1617
	if (!PowerOnAtOpen) {
1618 1619
		/* and then power up the noisy tuner */
		usbvision_power_on(usbvision);
1620
		usbvision_i2c_register(usbvision);
1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
	}
}

/*
 * usbvision_probe()
 *
 * This procedure queries device descriptor and accepts the interface
 * if it looks like USBVISION video device
 *
 */
1631 1632
static int __devinit usbvision_probe(struct usb_interface *intf,
				     const struct usb_device_id *devid)
1633
{
1634 1635
	struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
	struct usb_interface *uif;
1636 1637 1638 1639
	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
	const struct usb_host_interface *interface;
	struct usb_usbvision *usbvision = NULL;
	const struct usb_endpoint_descriptor *endpoint;
1640
	int model,i;
1641 1642

	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1643 1644
				dev->descriptor.idVendor,
				dev->descriptor.idProduct, ifnum);
1645

1646
	model = devid->driver_info;
1647
	if ( (model<0) || (model>=usbvision_device_data_size) ) {
1648
		PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1649 1650
		return -ENODEV;
	}
1651
	printk(KERN_INFO "%s: %s found\n", __func__,
1652
				usbvision_device_data[model].ModelString);
1653 1654 1655

	if (usbvision_device_data[model].Interface >= 0) {
		interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1656
	} else {
1657 1658 1659
		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
	}
	endpoint = &interface->endpoint[1].desc;
1660
	if (!usb_endpoint_xfer_isoc(endpoint)) {
1661
		dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1662
		    __func__, ifnum);
1663
		dev_err(&intf->dev, "%s: Endpoint attributes %d",
1664
		    __func__, endpoint->bmAttributes);
1665 1666
		return -ENODEV;
	}
1667
	if (usb_endpoint_dir_out(endpoint)) {
1668
		dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1669
		    __func__, ifnum);
1670 1671 1672
		return -ENODEV;
	}

1673 1674
	usbvision = usbvision_alloc(dev, intf);
	if (usbvision == NULL) {
1675
		dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1676 1677
		return -ENOMEM;
	}
1678

1679 1680
	if (dev->descriptor.bNumConfigurations > 1) {
		usbvision->bridgeType = BRIDGE_NT1004;
1681
	} else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1682
		usbvision->bridgeType = BRIDGE_NT1005;
1683
	} else {
1684 1685 1686 1687
		usbvision->bridgeType = BRIDGE_NT1003;
	}
	PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);

1688
	mutex_lock(&usbvision->lock);
1689

1690 1691 1692 1693 1694 1695 1696 1697
	/* 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) {
1698
		dev_err(&intf->dev, "usbvision: out of memory!\n");
1699
		mutex_unlock(&usbvision->lock);
1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712
		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]);
	}


1713 1714 1715 1716 1717 1718 1719 1720 1721 1722
	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->DevModel = model;
	usbvision->remove_pending = 0;
	usbvision->iface = ifnum;
1723
	usbvision->ifaceAlt = 0;
1724 1725 1726 1727 1728 1729 1730
	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);
1731
	mutex_unlock(&usbvision->lock);
1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756


	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) {
1757 1758
		dev_err(&usbvision->dev->dev,
			"%s: usb_get_intfdata() failed\n", __func__);
1759 1760 1761 1762
		return;
	}
	usb_set_intfdata (intf, NULL);

1763
	mutex_lock(&usbvision->lock);
1764 1765 1766 1767

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

1768 1769
	v4l2_device_disconnect(&usbvision->v4l2_dev);

1770
	if (usbvision->power) {
1771
		usbvision_i2c_unregister(usbvision);
1772 1773 1774 1775 1776 1777 1778
		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

1779
	mutex_unlock(&usbvision->lock);
1780 1781

	if (usbvision->user) {
1782
		printk(KERN_INFO "%s: In use, disconnect pending\n",
1783
		       __func__);
1784 1785
		wake_up_interruptible(&usbvision->wait_frame);
		wake_up_interruptible(&usbvision->wait_stream);
1786
	} else {
1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813
		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:
 */