usbvision-video.c 49.8 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/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);

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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, tuner, 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);
754 755 756 757 758 759 760 761 762 763 764 765 766
	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;
767
	}
768 769 770 771 772 773 774

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

	usbvision->curFrame = NULL;

775 776 777
	return 0;
}

778 779
static int vidioc_querybuf (struct file *file,
			    void *priv, struct v4l2_buffer *vb)
780
{
781
	struct usb_usbvision *usbvision = video_drvdata(file);
782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809
	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;
810 811
}

812 813
static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
{
814
	struct usb_usbvision *usbvision = video_drvdata(file);
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
	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)
{
851
	struct usb_usbvision *usbvision = video_drvdata(file);
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891
	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)
{
892
	struct usb_usbvision *usbvision = video_drvdata(file);
893 894

	usbvision->streaming = Stream_On;
895
	call_all(usbvision, video, s_stream, 1);
896 897 898 899 900 901 902

	return 0;
}

static int vidioc_streamoff(struct file *file,
			    void *priv, enum v4l2_buf_type type)
{
903
	struct usb_usbvision *usbvision = video_drvdata(file);
904 905 906 907 908 909 910

	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	if(usbvision->streaming == Stream_On) {
		usbvision_stream_interrupt(usbvision);
		/* Stop all video streamings */
911
		call_all(usbvision, video, s_stream, 0);
912 913 914 915 916 917
	}
	usbvision_empty_framequeues(usbvision);

	return 0;
}

918
static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
919 920 921 922 923 924 925 926 927 928 929
					struct v4l2_fmtdesc *vfd)
{
	if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
		return -EINVAL;
	}
	vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
	vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
	return 0;
}

930
static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
931 932
					struct v4l2_format *vf)
{
933
	struct usb_usbvision *usbvision = video_drvdata(file);
934 935 936 937 938 939 940 941 942 943 944 945
	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;
}

946
static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
947 948
			       struct v4l2_format *vf)
{
949
	struct usb_usbvision *usbvision = video_drvdata(file);
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973
	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;
}

974
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
975 976
			       struct v4l2_format *vf)
{
977
	struct usb_usbvision *usbvision = video_drvdata(file);
978 979
	int ret;

980
	if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
981 982 983 984 985 986 987 988 989 990 991 992 993 994
		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... */
995
	mutex_lock(&usbvision->lock);
996
	usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
997
	mutex_unlock(&usbvision->lock);
998 999 1000

	return 0;
}
1001

A
Al Viro 已提交
1002
static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1003 1004
		      size_t count, loff_t *ppos)
{
1005
	struct usb_usbvision *usbvision = video_drvdata(file);
1006 1007 1008 1009 1010 1011
	int noblock = file->f_flags & O_NONBLOCK;
	unsigned long lock_flags;

	int ret,i;
	struct usbvision_frame *frame;

1012
	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1013
	       (unsigned long)count, noblock);
1014 1015 1016 1017

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

1018 1019 1020
	/* 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. */
1021
	if(!usbvision->num_frames) {
1022 1023
		/* First, allocate some frames to work with
		   if this has not been done with VIDIOC_REQBUF */
1024 1025 1026 1027 1028 1029 1030 1031
		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;
1032
		call_all(usbvision, video, s_stream, 1);
1033
	}
1034

1035 1036
	/* Then, enqueue as many frames as possible
	   (like a user of VIDIOC_QBUF would do) */
1037
	for(i=0;i<usbvision->num_frames;i++) {
1038 1039 1040 1041 1042
		frame = &usbvision->frame[i];
		if(frame->grabstate == FrameState_Unused) {
			/* Mark it as ready and enqueue frame */
			frame->grabstate = FrameState_Ready;
			frame->scanstate = ScanState_Scanning;
1043 1044
			/* Accumulated in usbvision_parse_data() */
			frame->scanlength = 0;
1045 1046 1047 1048 1049 1050

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

			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
			list_add_tail(&frame->frame, &usbvision->inqueue);
1051 1052
			spin_unlock_irqrestore(&usbvision->queue_lock,
					       lock_flags);
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
		}
	}

	/* 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;
	}

1080
	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1081
	       __func__,
1082
	       frame->index, frame->bytes_read, frame->scanlength);
1083 1084 1085 1086 1087 1088 1089 1090 1091 1092

	/* 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;
1093
	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1094
	       __func__,
1095
	       (unsigned long)count, frame->bytes_read);
1096

1097
	/* For now, forget the frame if it has not been read in one shot. */
1098 1099 1100 1101
/* 	if (frame->bytes_read >= frame->scanlength) {// All data has been read */
		frame->bytes_read = 0;

		/* Mark it as available to be used again. */
1102
		frame->grabstate = FrameState_Unused;
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113
/* 	} */

	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;
1114
	struct usb_usbvision *usbvision = video_drvdata(file);
1115

1116 1117
	PDEBUG(DBG_MMAP, "mmap");

1118
	mutex_lock(&usbvision->lock);
1119 1120

	if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1121
		mutex_unlock(&usbvision->lock);
1122 1123 1124 1125
		return -EFAULT;
	}

	if (!(vma->vm_flags & VM_WRITE) ||
1126
	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
1127
		mutex_unlock(&usbvision->lock);
1128 1129 1130
		return -EINVAL;
	}

1131
	for (i = 0; i < usbvision->num_frames; i++) {
1132 1133
		if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
		    vma->vm_pgoff)
1134 1135
			break;
	}
1136
	if (i == usbvision->num_frames) {
1137 1138
		PDEBUG(DBG_MMAP,
		       "mmap: user supplied mapping address is out of range");
1139
		mutex_unlock(&usbvision->lock);
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
		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))) {
1151
			PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1152
			mutex_unlock(&usbvision->lock);
1153 1154 1155 1156 1157 1158 1159
			return -EAGAIN;
		}
		start += PAGE_SIZE;
		pos += PAGE_SIZE;
		size -= PAGE_SIZE;
	}

1160
	mutex_unlock(&usbvision->lock);
1161 1162 1163 1164 1165 1166 1167 1168
	return 0;
}


/*
 * Here comes the stuff for radio on usbvision based devices
 *
 */
1169
static int usbvision_radio_open(struct file *file)
1170
{
1171
	struct usb_usbvision *usbvision = video_drvdata(file);
1172 1173
	int errCode = 0;

1174
	PDEBUG(DBG_IO, "%s:", __func__);
1175

1176
	mutex_lock(&usbvision->lock);
1177 1178

	if (usbvision->user) {
1179 1180 1181
		dev_err(&usbvision->rdev->dev,
			"%s: Someone tried to open an already opened USBVision Radio!\n",
				__func__);
1182 1183 1184 1185 1186 1187 1188
		errCode = -EBUSY;
	}
	else {
		if(PowerOnAtOpen) {
			usbvision_reset_powerOffTimer(usbvision);
			if (usbvision->power == 0) {
				usbvision_power_on(usbvision);
1189
				usbvision_i2c_register(usbvision);
1190 1191 1192
			}
		}

1193 1194 1195 1196
		/* Alternate interface 1 is is the biggest frame size */
		errCode = usbvision_set_alternate(usbvision);
		if (errCode < 0) {
			usbvision->last_error = errCode;
1197 1198
			errCode = -EBUSY;
			goto out;
1199 1200
		}

1201 1202
		// If so far no errors then we shall start the radio
		usbvision->radio = 1;
1203
		call_all(usbvision, tuner, s_radio);
1204 1205 1206 1207 1208 1209
		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
		usbvision->user++;
	}

	if (errCode) {
		if (PowerOnAtOpen) {
1210
			usbvision_i2c_unregister(usbvision);
1211 1212 1213 1214
			usbvision_power_off(usbvision);
			usbvision->initialized = 0;
		}
	}
1215
out:
1216
	mutex_unlock(&usbvision->lock);
1217 1218 1219 1220
	return errCode;
}


1221
static int usbvision_radio_close(struct file *file)
1222
{
1223
	struct usb_usbvision *usbvision = video_drvdata(file);
1224 1225 1226 1227
	int errCode = 0;

	PDEBUG(DBG_IO, "");

1228
	mutex_lock(&usbvision->lock);
1229

1230 1231 1232 1233 1234
	/* Set packet size to 0 */
	usbvision->ifaceAlt=0;
	errCode = usb_set_interface(usbvision->dev, usbvision->iface,
				    usbvision->ifaceAlt);

1235 1236 1237 1238 1239 1240 1241 1242 1243
	usbvision_audio_off(usbvision);
	usbvision->radio=0;
	usbvision->user--;

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

1244
	mutex_unlock(&usbvision->lock);
1245 1246

	if (usbvision->remove_pending) {
1247
		printk(KERN_INFO "%s: Final disconnect\n", __func__);
1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
		usbvision_release(usbvision);
	}

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

/*
 * Here comes the stuff for vbi on usbvision based devices
 *
 */
1259
static int usbvision_vbi_open(struct file *file)
1260 1261
{
	/* TODO */
1262
	return -ENODEV;
1263 1264
}

1265
static int usbvision_vbi_close(struct file *file)
1266 1267
{
	/* TODO */
1268
	return -ENODEV;
1269 1270
}

1271
static long usbvision_do_vbi_ioctl(struct file *file,
1272 1273 1274
				 unsigned int cmd, void *arg)
{
	/* TODO */
1275
	return -ENOIOCTLCMD;
1276 1277
}

1278
static long usbvision_vbi_ioctl(struct file *file,
1279 1280
		       unsigned int cmd, unsigned long arg)
{
1281
	return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1282 1283 1284 1285 1286 1287 1288 1289
}


//
// Video registration stuff
//

// Video template
1290
static const struct v4l2_file_operations usbvision_fops = {
1291 1292 1293 1294 1295
	.owner             = THIS_MODULE,
	.open		= usbvision_v4l2_open,
	.release	= usbvision_v4l2_close,
	.read		= usbvision_v4l2_read,
	.mmap		= usbvision_v4l2_mmap,
1296 1297
	.ioctl		= video_ioctl2,
/* 	.poll          = video_poll, */
1298
};
1299 1300

static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1301
	.vidioc_querycap      = vidioc_querycap,
1302 1303 1304 1305
	.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,
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315
	.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,
1316
	.vidioc_s_audio       = vidioc_s_audio,
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
	.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
1332 1333 1334 1335 1336 1337 1338 1339
};

static struct video_device usbvision_video_template = {
	.fops		= &usbvision_fops,
	.ioctl_ops 	= &usbvision_ioctl_ops,
	.name           = "usbvision-video",
	.release	= video_device_release,
	.minor		= -1,
1340 1341
	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1342 1343 1344 1345
};


// Radio template
1346
static const struct v4l2_file_operations usbvision_radio_fops = {
1347 1348 1349
	.owner             = THIS_MODULE,
	.open		= usbvision_radio_open,
	.release	= usbvision_radio_close,
1350
	.ioctl		= video_ioctl2,
1351 1352
};

1353
static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1354 1355 1356 1357 1358 1359
	.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,
1360
	.vidioc_s_audio       = vidioc_s_audio,
1361 1362 1363 1364 1365 1366
	.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,
1367 1368 1369 1370 1371 1372 1373 1374
};

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,
1375 1376 1377

	.tvnorms              = USBVISION_NORMS,
	.current_norm         = V4L2_STD_PAL
1378 1379 1380
};

// vbi template
1381
static const struct v4l2_file_operations usbvision_vbi_fops = {
1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
	.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) {
1405 1406
		dev_err(&usbvision->dev->dev,
			"%s: usbvision->dev is not set\n", __func__);
1407 1408 1409 1410 1411 1412 1413 1414 1415
		return NULL;
	}

	vdev = video_device_alloc();
	if (NULL == vdev) {
		return NULL;
	}
	*vdev = *vdev_template;
//	vdev->minor   = -1;
1416
	vdev->v4l2_dev = &usbvision->v4l2_dev;
1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
	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) {
1427
		PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1428
		       usbvision->vbi->num);
1429 1430
		if (usbvision->vbi->minor != -1) {
			video_unregister_device(usbvision->vbi);
1431
		} else {
1432 1433 1434 1435 1436 1437 1438
			video_device_release(usbvision->vbi);
		}
		usbvision->vbi = NULL;
	}

	// Radio Device:
	if (usbvision->rdev) {
1439
		PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1440
		       usbvision->rdev->num);
1441 1442
		if (usbvision->rdev->minor != -1) {
			video_unregister_device(usbvision->rdev);
1443
		} else {
1444 1445 1446 1447 1448 1449 1450
			video_device_release(usbvision->rdev);
		}
		usbvision->rdev = NULL;
	}

	// Video Device:
	if (usbvision->vdev) {
1451
		PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1452
		       usbvision->vdev->num);
1453 1454
		if (usbvision->vdev->minor != -1) {
			video_unregister_device(usbvision->vdev);
1455
		} else {
1456 1457 1458 1459 1460 1461 1462 1463 1464 1465
			video_device_release(usbvision->vdev);
		}
		usbvision->vdev = NULL;
	}
}

// register video4linux devices
static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
{
	// Video Device:
1466 1467 1468
	usbvision->vdev = usbvision_vdev_init(usbvision,
					      &usbvision_video_template,
					      "USBVision Video");
1469 1470 1471
	if (usbvision->vdev == NULL) {
		goto err_exit;
	}
1472 1473 1474
	if (video_register_device(usbvision->vdev,
				  VFL_TYPE_GRABBER,
				  video_nr)<0) {
1475 1476
		goto err_exit;
	}
1477
	printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1478
	       usbvision->nr, usbvision->vdev->num);
1479 1480 1481 1482

	// Radio Device:
	if (usbvision_device_data[usbvision->DevModel].Radio) {
		// usbvision has radio
1483 1484 1485
		usbvision->rdev = usbvision_vdev_init(usbvision,
						      &usbvision_radio_template,
						      "USBVision Radio");
1486 1487 1488
		if (usbvision->rdev == NULL) {
			goto err_exit;
		}
1489 1490 1491
		if (video_register_device(usbvision->rdev,
					  VFL_TYPE_RADIO,
					  radio_nr)<0) {
1492 1493
			goto err_exit;
		}
1494
		printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1495
		       usbvision->nr, usbvision->rdev->num);
1496 1497 1498
	}
	// vbi Device:
	if (usbvision_device_data[usbvision->DevModel].vbi) {
1499 1500 1501
		usbvision->vbi = usbvision_vdev_init(usbvision,
						     &usbvision_vbi_template,
						     "USBVision VBI");
1502 1503 1504
		if (usbvision->vdev == NULL) {
			goto err_exit;
		}
1505 1506 1507
		if (video_register_device(usbvision->vbi,
					  VFL_TYPE_VBI,
					  vbi_nr)<0) {
1508 1509
			goto err_exit;
		}
1510
		printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1511
		       usbvision->nr, usbvision->vbi->num);
1512 1513 1514 1515 1516
	}
	// all done
	return 0;

 err_exit:
1517 1518 1519
	dev_err(&usbvision->dev->dev,
		"USBVision[%d]: video_register_device() failed\n",
			usbvision->nr);
1520 1521 1522 1523 1524 1525 1526
	usbvision_unregister_video(usbvision);
	return -1;
}

/*
 * usbvision_alloc()
 *
1527 1528
 * This code allocates the struct usb_usbvision.
 * It is filled with default values.
1529 1530 1531 1532 1533 1534 1535 1536
 *
 * Returns NULL on error, a pointer to usb_usbvision else.
 *
 */
static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
{
	struct usb_usbvision *usbvision;

1537 1538 1539
	usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
	if (usbvision == NULL)
		return NULL;
1540 1541

	usbvision->dev = dev;
1542 1543
	if (v4l2_device_register(&dev->dev, &usbvision->v4l2_dev))
		goto err_free;
1544

1545
	mutex_init(&usbvision->lock);	/* available */
1546 1547 1548

	// prepare control urb for control messages during interrupts
	usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1549 1550
	if (usbvision->ctrlUrb == NULL)
		goto err_unreg;
1551 1552 1553 1554 1555 1556
	init_waitqueue_head(&usbvision->ctrlUrb_wq);

	usbvision_init_powerOffTimer(usbvision);

	return usbvision;

1557 1558 1559 1560
err_unreg:
	v4l2_device_unregister(&usbvision->v4l2_dev);
err_free:
	kfree(usbvision);
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
	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, "");

1575
	mutex_lock(&usbvision->lock);
1576 1577 1578 1579 1580

	usbvision_reset_powerOffTimer(usbvision);

	usbvision->initialized = 0;

1581
	mutex_unlock(&usbvision->lock);
1582 1583 1584 1585 1586 1587 1588 1589

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

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

1590
	v4l2_device_unregister(&usbvision->v4l2_dev);
1591 1592 1593 1594 1595 1596
	kfree(usbvision);

	PDEBUG(DBG_PROBE, "success");
}


1597
/*********************** usb interface **********************************/
1598 1599 1600

static void usbvision_configure_video(struct usb_usbvision *usbvision)
{
1601
	int model;
1602 1603 1604 1605 1606 1607 1608

	if (usbvision == NULL)
		return;

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

1609
	if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1610 1611
		usbvision->Vin_Reg2_Preset =
			usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1612 1613 1614 1615
	} else {
		usbvision->Vin_Reg2_Preset = 0;
	}

1616
	usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1617 1618 1619 1620 1621

	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 */
1622 1623
	/* first switch off audio */
	usbvision_audio_off(usbvision);
1624
	if (!PowerOnAtOpen) {
1625 1626
		/* and then power up the noisy tuner */
		usbvision_power_on(usbvision);
1627
		usbvision_i2c_register(usbvision);
1628 1629 1630 1631 1632 1633 1634 1635 1636 1637
	}
}

/*
 * usbvision_probe()
 *
 * This procedure queries device descriptor and accepts the interface
 * if it looks like USBVISION video device
 *
 */
1638 1639
static int __devinit usbvision_probe(struct usb_interface *intf,
				     const struct usb_device_id *devid)
1640
{
1641 1642
	struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
	struct usb_interface *uif;
1643 1644 1645 1646
	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
	const struct usb_host_interface *interface;
	struct usb_usbvision *usbvision = NULL;
	const struct usb_endpoint_descriptor *endpoint;
1647
	int model,i;
1648 1649

	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1650 1651
				dev->descriptor.idVendor,
				dev->descriptor.idProduct, ifnum);
1652

1653
	model = devid->driver_info;
1654
	if ( (model<0) || (model>=usbvision_device_data_size) ) {
1655
		PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1656 1657
		return -ENODEV;
	}
1658
	printk(KERN_INFO "%s: %s found\n", __func__,
1659
				usbvision_device_data[model].ModelString);
1660 1661 1662

	if (usbvision_device_data[model].Interface >= 0) {
		interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1663
	} else {
1664 1665 1666
		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
	}
	endpoint = &interface->endpoint[1].desc;
1667
	if (!usb_endpoint_xfer_isoc(endpoint)) {
1668
		dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1669
		    __func__, ifnum);
1670
		dev_err(&intf->dev, "%s: Endpoint attributes %d",
1671
		    __func__, endpoint->bmAttributes);
1672 1673
		return -ENODEV;
	}
1674
	if (usb_endpoint_dir_out(endpoint)) {
1675
		dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1676
		    __func__, ifnum);
1677 1678 1679 1680
		return -ENODEV;
	}

	if ((usbvision = usbvision_alloc(dev)) == NULL) {
1681
		dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1682 1683
		return -ENOMEM;
	}
1684

1685 1686
	if (dev->descriptor.bNumConfigurations > 1) {
		usbvision->bridgeType = BRIDGE_NT1004;
1687
	} else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1688
		usbvision->bridgeType = BRIDGE_NT1005;
1689
	} else {
1690 1691 1692 1693
		usbvision->bridgeType = BRIDGE_NT1003;
	}
	PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);

1694
	mutex_lock(&usbvision->lock);
1695

1696 1697 1698 1699 1700 1701 1702 1703
	/* 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) {
1704
		dev_err(&intf->dev, "usbvision: out of memory!\n");
1705
		mutex_unlock(&usbvision->lock);
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718
		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]);
	}


1719 1720 1721 1722 1723 1724 1725 1726 1727 1728
	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;
1729
	usbvision->ifaceAlt = 0;
1730 1731 1732 1733 1734 1735 1736
	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);
1737
	mutex_unlock(&usbvision->lock);
1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762


	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) {
1763 1764
		dev_err(&usbvision->dev->dev,
			"%s: usb_get_intfdata() failed\n", __func__);
1765 1766 1767 1768
		return;
	}
	usb_set_intfdata (intf, NULL);

1769
	mutex_lock(&usbvision->lock);
1770 1771 1772 1773

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

1774 1775
	v4l2_device_disconnect(&usbvision->v4l2_dev);

1776
	if (usbvision->power) {
1777
		usbvision_i2c_unregister(usbvision);
1778 1779 1780 1781 1782 1783 1784
		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

1785
	mutex_unlock(&usbvision->lock);
1786 1787

	if (usbvision->user) {
1788
		printk(KERN_INFO "%s: In use, disconnect pending\n",
1789
		       __func__);
1790 1791
		wake_up_interruptible(&usbvision->wait_frame);
		wake_up_interruptible(&usbvision->wait_stream);
1792
	} else {
1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819
		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:
 */