mirror of https://gitee.com/openkylin/linux.git
1647 lines
46 KiB
C
1647 lines
46 KiB
C
/*
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* USB USBVISION Video device driver 0.9.10
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*
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*
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*
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* Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
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*
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* This module is part of usbvision driver project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Let's call the version 0.... until compression decoding is completely
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* implemented.
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*
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* This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
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* It was based on USB CPiA driver written by Peter Pregler,
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* Scott J. Bertin and Johannes Erdfelt
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* Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
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* Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
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* Updates to driver completed by Dwaine P. Garden
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*
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*
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* TODO:
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* - use submit_urb for all setup packets
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* - Fix memory settings for nt1004. It is 4 times as big as the
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* nt1003 memory.
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* - Add audio on endpoint 3 for nt1004 chip.
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* Seems impossible, needs a codec interface. Which one?
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* - Clean up the driver.
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* - optimization for performance.
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* - Add Videotext capability (VBI). Working on it.....
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* - Check audio for other devices
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*
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*/
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/highmem.h>
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#include <linux/vmalloc.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/io.h>
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#include <linux/videodev2.h>
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#include <linux/i2c.h>
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#include <media/i2c/saa7115.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.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 \
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"Joerg Heckenbach <joerg@heckenbach-aw.de>, " \
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"Dwaine Garden <DwaineGarden@rogers.com>"
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#define DRIVER_NAME "usbvision"
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#define DRIVER_ALIAS "USBVision"
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#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
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#define USBVISION_VERSION_STRING "0.9.11"
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#define ENABLE_HEXDUMP 0 /* Enable if you need it */
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#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, \
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__func__, __LINE__ , ## args); \
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}
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#else
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#define PDEBUG(level, fmt, args...) do {} while (0)
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#endif
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#define DBG_IO (1 << 1)
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#define DBG_PROBE (1 << 2)
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#define DBG_MMAP (1 << 3)
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/* String operations */
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#define rmspace(str) while (*str == ' ') str++;
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#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[] = {
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{ 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
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{ 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
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{ 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
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{ 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
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{ 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
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{ 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
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{ 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */
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{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
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};
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/* Function prototypes */
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static void usbvision_release(struct usb_usbvision *usbvision);
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/* Default initialization of device driver parameters */
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/* Set the default format for ISOC endpoint */
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static int isoc_mode = ISOC_MODE_COMPRESS;
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/* Set the default Debug Mode of the device driver */
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static int video_debug;
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/* Sequential Number of Video Device */
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static int video_nr = -1;
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/* Sequential Number of Radio Device */
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static int radio_nr = -1;
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/* Grab parameters for the device driver */
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/* Showing parameters under SYSFS */
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module_param(isoc_mode, int, 0444);
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module_param(video_debug, int, 0444);
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module_param(video_nr, int, 0444);
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module_param(radio_nr, int, 0444);
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MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
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MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
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MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
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MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
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/* Misc stuff */
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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MODULE_VERSION(USBVISION_VERSION_STRING);
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MODULE_ALIAS(DRIVER_ALIAS);
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/*****************************************************************************/
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/* SYSFS Code - Copied from the stv680.c usb module. */
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/* Device information is located at /sys/class/video4linux/video0 */
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/* Device parameters information is located at /sys/module/usbvision */
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/* Device USB Information is located at */
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/* /sys/bus/usb/drivers/USBVision Video Grabber */
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/*****************************************************************************/
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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 = to_video_device(cd);
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return video_get_drvdata(vdev);
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}
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static ssize_t show_version(struct device *cd,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
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}
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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return sprintf(buf, "%s\n",
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usbvision_device_data[usbvision->dev_model].model_string);
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
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V4L2_CID_HUE));
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return sprintf(buf, "%d\n", val);
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
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V4L2_CID_CONTRAST));
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return sprintf(buf, "%d\n", val);
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
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V4L2_CID_BRIGHTNESS));
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return sprintf(buf, "%d\n", val);
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
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V4L2_CID_SATURATION));
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return sprintf(buf, "%d\n", val);
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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return sprintf(buf, "%s\n",
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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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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return sprintf(buf, "%s\n",
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YES_NO(usbvision->isoc_mode == 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,
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struct device_attribute *attr, char *buf)
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{
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struct video_device *vdev = to_video_device(cd);
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struct usb_usbvision *usbvision = video_get_drvdata(vdev);
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return sprintf(buf, "%d\n", usbvision->bridge_type);
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}
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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)
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{
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int res;
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if (!vdev)
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return;
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do {
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res = device_create_file(&vdev->dev, &dev_attr_version);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_model);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_hue);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_contrast);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_brightness);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_saturation);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_streaming);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_compression);
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if (res < 0)
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break;
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res = device_create_file(&vdev->dev, &dev_attr_bridge);
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if (res >= 0)
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return;
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} while (0);
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dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
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}
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static void usbvision_remove_sysfs(struct video_device *vdev)
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{
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if (vdev) {
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device_remove_file(&vdev->dev, &dev_attr_version);
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device_remove_file(&vdev->dev, &dev_attr_model);
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device_remove_file(&vdev->dev, &dev_attr_hue);
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device_remove_file(&vdev->dev, &dev_attr_contrast);
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device_remove_file(&vdev->dev, &dev_attr_brightness);
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device_remove_file(&vdev->dev, &dev_attr_saturation);
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device_remove_file(&vdev->dev, &dev_attr_streaming);
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device_remove_file(&vdev->dev, &dev_attr_compression);
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device_remove_file(&vdev->dev, &dev_attr_bridge);
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}
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}
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/*
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* usbvision_open()
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*
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* This is part of Video 4 Linux API. The driver can be opened by one
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* client only (checks internal counter 'usbvision->user'). The procedure
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* then allocates buffers needed for video processing.
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*
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*/
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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 err_code = 0;
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PDEBUG(DBG_IO, "open");
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if (mutex_lock_interruptible(&usbvision->v4l2_lock))
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return -ERESTARTSYS;
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if (usbvision->user) {
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err_code = -EBUSY;
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} else {
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err_code = v4l2_fh_open(file);
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if (err_code)
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goto unlock;
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/* Allocate memory for the scratch ring buffer */
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err_code = usbvision_scratch_alloc(usbvision);
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if (isoc_mode == ISOC_MODE_COMPRESS) {
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/* Allocate intermediate decompression buffers
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only if needed */
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err_code = usbvision_decompress_alloc(usbvision);
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}
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if (err_code) {
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/* Deallocate all buffers if trouble */
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usbvision_scratch_free(usbvision);
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usbvision_decompress_free(usbvision);
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}
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}
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/* If so far no errors then we shall start the camera */
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if (!err_code) {
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/* Send init sequence only once, it's large! */
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if (!usbvision->initialized) {
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int setup_ok = 0;
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setup_ok = usbvision_setup(usbvision, isoc_mode);
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if (setup_ok)
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usbvision->initialized = 1;
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else
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err_code = -EBUSY;
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}
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if (!err_code) {
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usbvision_begin_streaming(usbvision);
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err_code = usbvision_init_isoc(usbvision);
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/* device must be initialized before isoc transfer */
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usbvision_muxsel(usbvision, 0);
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/* prepare queues */
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usbvision_empty_framequeues(usbvision);
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usbvision->user++;
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}
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}
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unlock:
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mutex_unlock(&usbvision->v4l2_lock);
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PDEBUG(DBG_IO, "success");
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return err_code;
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}
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/*
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* usbvision_v4l2_close()
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*
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* This is part of Video 4 Linux API. The procedure
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* stops streaming and deallocates all buffers that were earlier
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* allocated in usbvision_v4l2_open().
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*
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*/
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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->v4l2_lock);
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usbvision_audio_off(usbvision);
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usbvision_restart_isoc(usbvision);
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usbvision_stop_isoc(usbvision);
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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);
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usbvision->user--;
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mutex_unlock(&usbvision->v4l2_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);
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return 0;
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}
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PDEBUG(DBG_IO, "success");
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return v4l2_fh_release(file);
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}
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/*
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* usbvision_ioctl()
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*
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* This is part of Video 4 Linux API. The procedure handles ioctl() calls.
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*
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*/
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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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 err_code;
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/* NT100x has a 8-bit register space */
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err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
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if (err_code < 0) {
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dev_err(&usbvision->vdev.dev,
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"%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
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__func__, err_code);
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return err_code;
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}
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reg->val = err_code;
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reg->size = 1;
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return 0;
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}
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static int vidioc_s_register(struct file *file, void *priv,
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const 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 err_code;
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/* NT100x has a 8-bit register space */
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err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
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if (err_code < 0) {
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dev_err(&usbvision->vdev.dev,
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"%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
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__func__, err_code);
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return err_code;
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}
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return 0;
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}
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#endif
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|
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *vc)
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{
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struct usb_usbvision *usbvision = video_drvdata(file);
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struct video_device *vdev = video_devdata(file);
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strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
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strlcpy(vc->card,
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usbvision_device_data[usbvision->dev_model].model_string,
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sizeof(vc->card));
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usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
|
|
vc->device_caps = usbvision->have_tuner ? V4L2_CAP_TUNER : 0;
|
|
if (vdev->vfl_type == VFL_TYPE_GRABBER)
|
|
vc->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
|
|
else
|
|
vc->device_caps |= V4L2_CAP_RADIO;
|
|
|
|
vc->capabilities = vc->device_caps | V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
|
|
if (usbvision_device_data[usbvision->dev_model].radio)
|
|
vc->capabilities |= V4L2_CAP_RADIO;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *vi)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int chan;
|
|
|
|
if (vi->index >= usbvision->video_inputs)
|
|
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->dev_model].video_channels == 4) {
|
|
strcpy(vi->name, "White Video Input");
|
|
} else {
|
|
strcpy(vi->name, "Television");
|
|
vi->type = V4L2_INPUT_TYPE_TUNER;
|
|
vi->tuner = chan;
|
|
vi->std = USBVISION_NORMS;
|
|
}
|
|
break;
|
|
case 1:
|
|
vi->type = V4L2_INPUT_TYPE_CAMERA;
|
|
if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
|
|
strcpy(vi->name, "Green Video Input");
|
|
else
|
|
strcpy(vi->name, "Composite Video Input");
|
|
vi->std = USBVISION_NORMS;
|
|
break;
|
|
case 2:
|
|
vi->type = V4L2_INPUT_TYPE_CAMERA;
|
|
if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
|
|
strcpy(vi->name, "Yellow Video Input");
|
|
else
|
|
strcpy(vi->name, "S-Video Input");
|
|
vi->std = USBVISION_NORMS;
|
|
break;
|
|
case 3:
|
|
vi->type = V4L2_INPUT_TYPE_CAMERA;
|
|
strcpy(vi->name, "Red Video Input");
|
|
vi->std = USBVISION_NORMS;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
*input = usbvision->ctl_input;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
if (input >= usbvision->video_inputs)
|
|
return -EINVAL;
|
|
|
|
usbvision_muxsel(usbvision, input);
|
|
usbvision_set_input(usbvision);
|
|
usbvision_set_output(usbvision,
|
|
usbvision->curwidth,
|
|
usbvision->curheight);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
usbvision->tvnorm_id = id;
|
|
|
|
call_all(usbvision, video, s_std, usbvision->tvnorm_id);
|
|
/* propagate the change to the decoder */
|
|
usbvision_muxsel(usbvision, usbvision->ctl_input);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
*id = usbvision->tvnorm_id;
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_tuner(struct file *file, void *priv,
|
|
struct v4l2_tuner *vt)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
if (vt->index) /* Only tuner 0 */
|
|
return -EINVAL;
|
|
if (vt->type == V4L2_TUNER_RADIO)
|
|
strcpy(vt->name, "Radio");
|
|
else
|
|
strcpy(vt->name, "Television");
|
|
|
|
/* Let clients fill in the remainder of this struct */
|
|
call_all(usbvision, tuner, g_tuner, vt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_tuner(struct file *file, void *priv,
|
|
const struct v4l2_tuner *vt)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
/* Only one tuner for now */
|
|
if (vt->index)
|
|
return -EINVAL;
|
|
/* let clients handle this */
|
|
call_all(usbvision, tuner, s_tuner, vt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_frequency(struct file *file, void *priv,
|
|
struct v4l2_frequency *freq)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
/* Only one tuner */
|
|
if (freq->tuner)
|
|
return -EINVAL;
|
|
if (freq->type == V4L2_TUNER_RADIO)
|
|
freq->frequency = usbvision->radio_freq;
|
|
else
|
|
freq->frequency = usbvision->tv_freq;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_frequency(struct file *file, void *priv,
|
|
const struct v4l2_frequency *freq)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
struct v4l2_frequency new_freq = *freq;
|
|
|
|
/* Only one tuner for now */
|
|
if (freq->tuner)
|
|
return -EINVAL;
|
|
|
|
call_all(usbvision, tuner, s_frequency, freq);
|
|
call_all(usbvision, tuner, g_frequency, &new_freq);
|
|
if (freq->type == V4L2_TUNER_RADIO)
|
|
usbvision->radio_freq = new_freq.frequency;
|
|
else
|
|
usbvision->tv_freq = new_freq.frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_reqbufs(struct file *file,
|
|
void *priv, struct v4l2_requestbuffers *vr)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
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->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (usbvision->streaming == stream_on) {
|
|
ret = usbvision_stream_interrupt(usbvision);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
usbvision_frames_free(usbvision);
|
|
usbvision_empty_framequeues(usbvision);
|
|
vr->count = usbvision_frames_alloc(usbvision, vr->count);
|
|
|
|
usbvision->cur_frame = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_querybuf(struct file *file,
|
|
void *priv, struct v4l2_buffer *vb)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
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 = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
|
frame = &usbvision->frame[vb->index];
|
|
if (frame->grabstate >= frame_state_ready)
|
|
vb->flags |= V4L2_BUF_FLAG_QUEUED;
|
|
if (frame->grabstate >= frame_state_done)
|
|
vb->flags |= V4L2_BUF_FLAG_DONE;
|
|
if (frame->grabstate == frame_state_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;
|
|
}
|
|
|
|
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
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 != frame_state_unused)
|
|
return -EAGAIN;
|
|
|
|
/* Mark it as ready and enqueue frame */
|
|
frame->grabstate = frame_state_ready;
|
|
frame->scanstate = scan_state_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)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
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 = frame_state_unused;
|
|
|
|
vb->memory = V4L2_MEMORY_MMAP;
|
|
vb->flags = V4L2_BUF_FLAG_MAPPED |
|
|
V4L2_BUF_FLAG_QUEUED |
|
|
V4L2_BUF_FLAG_DONE |
|
|
V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
|
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)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
usbvision->streaming = stream_on;
|
|
call_all(usbvision, video, s_stream, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_streamoff(struct file *file,
|
|
void *priv, enum v4l2_buf_type type)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
if (usbvision->streaming == stream_on) {
|
|
usbvision_stream_interrupt(usbvision);
|
|
/* Stop all video streamings */
|
|
call_all(usbvision, video, s_stream, 0);
|
|
}
|
|
usbvision_empty_framequeues(usbvision);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
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;
|
|
}
|
|
|
|
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *vf)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
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;
|
|
}
|
|
|
|
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *vf)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int format_idx;
|
|
|
|
/* Find requested format in available ones */
|
|
for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
|
|
if (vf->fmt.pix.pixelformat ==
|
|
usbvision_v4l2_format[format_idx].format) {
|
|
usbvision->palette = usbvision_v4l2_format[format_idx];
|
|
break;
|
|
}
|
|
}
|
|
/* robustness */
|
|
if (format_idx == 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;
|
|
vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *vf)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int ret;
|
|
|
|
ret = vidioc_try_fmt_vid_cap(file, priv, vf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* stop io in case it is already in progress */
|
|
if (usbvision->streaming == stream_on) {
|
|
ret = usbvision_stream_interrupt(usbvision);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
usbvision_frames_free(usbvision);
|
|
usbvision_empty_framequeues(usbvision);
|
|
|
|
usbvision->cur_frame = NULL;
|
|
|
|
/* by now we are committed to the new data... */
|
|
usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t usbvision_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int noblock = file->f_flags & O_NONBLOCK;
|
|
unsigned long lock_flags;
|
|
int ret, i;
|
|
struct usbvision_frame *frame;
|
|
|
|
PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
|
|
(unsigned long)count, noblock);
|
|
|
|
if (!USBVISION_IS_OPERATIONAL(usbvision) || !buf)
|
|
return -EFAULT;
|
|
|
|
/* 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. */
|
|
if (!usbvision->num_frames) {
|
|
/* First, allocate some frames to work with
|
|
if this has not been done with VIDIOC_REQBUF */
|
|
usbvision_frames_free(usbvision);
|
|
usbvision_empty_framequeues(usbvision);
|
|
usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
|
|
}
|
|
|
|
if (usbvision->streaming != stream_on) {
|
|
/* no stream is running, make it running ! */
|
|
usbvision->streaming = stream_on;
|
|
call_all(usbvision, video, s_stream, 1);
|
|
}
|
|
|
|
/* Then, enqueue as many frames as possible
|
|
(like a user of VIDIOC_QBUF would do) */
|
|
for (i = 0; i < usbvision->num_frames; i++) {
|
|
frame = &usbvision->frame[i];
|
|
if (frame->grabstate == frame_state_unused) {
|
|
/* Mark it as ready and enqueue frame */
|
|
frame->grabstate = frame_state_ready;
|
|
frame->scanstate = scan_state_scanning;
|
|
/* Accumulated in usbvision_parse_data() */
|
|
frame->scanlength = 0;
|
|
|
|
/* set v4l2_format index */
|
|
frame->v4l2_format = usbvision->palette;
|
|
|
|
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
|
|
list_add_tail(&frame->frame, &usbvision->inqueue);
|
|
spin_unlock_irqrestore(&usbvision->queue_lock,
|
|
lock_flags);
|
|
}
|
|
}
|
|
|
|
/* 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 == frame_state_error) {
|
|
frame->bytes_read = 0;
|
|
return 0;
|
|
}
|
|
|
|
PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
|
|
__func__,
|
|
frame->index, frame->bytes_read, frame->scanlength);
|
|
|
|
/* 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;
|
|
PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
|
|
__func__,
|
|
(unsigned long)count, frame->bytes_read);
|
|
|
|
#if 1
|
|
/*
|
|
* FIXME:
|
|
* For now, forget the frame if it has not been read in one shot.
|
|
*/
|
|
frame->bytes_read = 0;
|
|
|
|
/* Mark it as available to be used again. */
|
|
frame->grabstate = frame_state_unused;
|
|
#else
|
|
if (frame->bytes_read >= frame->scanlength) {
|
|
/* All data has been read */
|
|
frame->bytes_read = 0;
|
|
|
|
/* Mark it as available to be used again. */
|
|
frame->grabstate = frame_state_unused;
|
|
}
|
|
#endif
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int res;
|
|
|
|
if (mutex_lock_interruptible(&usbvision->v4l2_lock))
|
|
return -ERESTARTSYS;
|
|
res = usbvision_read(file, buf, count, ppos);
|
|
mutex_unlock(&usbvision->v4l2_lock);
|
|
return res;
|
|
}
|
|
|
|
static int usbvision_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;
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
PDEBUG(DBG_MMAP, "mmap");
|
|
|
|
if (!USBVISION_IS_OPERATIONAL(usbvision))
|
|
return -EFAULT;
|
|
|
|
if (!(vma->vm_flags & VM_WRITE) ||
|
|
size != PAGE_ALIGN(usbvision->max_frame_size)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < usbvision->num_frames; i++) {
|
|
if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
|
|
vma->vm_pgoff)
|
|
break;
|
|
}
|
|
if (i == usbvision->num_frames) {
|
|
PDEBUG(DBG_MMAP,
|
|
"mmap: user supplied mapping address is out of range");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* VM_IO is eventually going to replace PageReserved altogether */
|
|
vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
|
|
|
|
pos = usbvision->frame[i].data;
|
|
while (size > 0) {
|
|
if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
|
|
PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
|
|
return -EAGAIN;
|
|
}
|
|
start += PAGE_SIZE;
|
|
pos += PAGE_SIZE;
|
|
size -= PAGE_SIZE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int res;
|
|
|
|
if (mutex_lock_interruptible(&usbvision->v4l2_lock))
|
|
return -ERESTARTSYS;
|
|
res = usbvision_mmap(file, vma);
|
|
mutex_unlock(&usbvision->v4l2_lock);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* Here comes the stuff for radio on usbvision based devices
|
|
*
|
|
*/
|
|
static int usbvision_radio_open(struct file *file)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
int err_code = 0;
|
|
|
|
PDEBUG(DBG_IO, "%s:", __func__);
|
|
|
|
if (mutex_lock_interruptible(&usbvision->v4l2_lock))
|
|
return -ERESTARTSYS;
|
|
err_code = v4l2_fh_open(file);
|
|
if (err_code)
|
|
goto out;
|
|
if (usbvision->user) {
|
|
dev_err(&usbvision->rdev.dev,
|
|
"%s: Someone tried to open an already opened USBVision Radio!\n",
|
|
__func__);
|
|
err_code = -EBUSY;
|
|
} else {
|
|
/* Alternate interface 1 is is the biggest frame size */
|
|
err_code = usbvision_set_alternate(usbvision);
|
|
if (err_code < 0) {
|
|
usbvision->last_error = err_code;
|
|
err_code = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
/* If so far no errors then we shall start the radio */
|
|
usbvision->radio = 1;
|
|
call_all(usbvision, tuner, s_radio);
|
|
usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
|
|
usbvision->user++;
|
|
}
|
|
out:
|
|
mutex_unlock(&usbvision->v4l2_lock);
|
|
return err_code;
|
|
}
|
|
|
|
|
|
static int usbvision_radio_close(struct file *file)
|
|
{
|
|
struct usb_usbvision *usbvision = video_drvdata(file);
|
|
|
|
PDEBUG(DBG_IO, "");
|
|
|
|
mutex_lock(&usbvision->v4l2_lock);
|
|
/* Set packet size to 0 */
|
|
usbvision->iface_alt = 0;
|
|
usb_set_interface(usbvision->dev, usbvision->iface,
|
|
usbvision->iface_alt);
|
|
|
|
usbvision_audio_off(usbvision);
|
|
usbvision->radio = 0;
|
|
usbvision->user--;
|
|
mutex_unlock(&usbvision->v4l2_lock);
|
|
|
|
if (usbvision->remove_pending) {
|
|
printk(KERN_INFO "%s: Final disconnect\n", __func__);
|
|
v4l2_fh_release(file);
|
|
usbvision_release(usbvision);
|
|
return 0;
|
|
}
|
|
|
|
PDEBUG(DBG_IO, "success");
|
|
return v4l2_fh_release(file);
|
|
}
|
|
|
|
/* Video registration stuff */
|
|
|
|
/* Video template */
|
|
static const struct v4l2_file_operations usbvision_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = usbvision_v4l2_open,
|
|
.release = usbvision_v4l2_close,
|
|
.read = usbvision_v4l2_read,
|
|
.mmap = usbvision_v4l2_mmap,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
.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,
|
|
.vidioc_reqbufs = vidioc_reqbufs,
|
|
.vidioc_querybuf = vidioc_querybuf,
|
|
.vidioc_qbuf = vidioc_qbuf,
|
|
.vidioc_dqbuf = vidioc_dqbuf,
|
|
.vidioc_s_std = vidioc_s_std,
|
|
.vidioc_g_std = vidioc_g_std,
|
|
.vidioc_enum_input = vidioc_enum_input,
|
|
.vidioc_g_input = vidioc_g_input,
|
|
.vidioc_s_input = vidioc_s_input,
|
|
.vidioc_streamon = vidioc_streamon,
|
|
.vidioc_streamoff = vidioc_streamoff,
|
|
.vidioc_g_tuner = vidioc_g_tuner,
|
|
.vidioc_s_tuner = vidioc_s_tuner,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = vidioc_g_register,
|
|
.vidioc_s_register = vidioc_s_register,
|
|
#endif
|
|
};
|
|
|
|
static struct video_device usbvision_video_template = {
|
|
.fops = &usbvision_fops,
|
|
.ioctl_ops = &usbvision_ioctl_ops,
|
|
.name = "usbvision-video",
|
|
.release = video_device_release_empty,
|
|
.tvnorms = USBVISION_NORMS,
|
|
};
|
|
|
|
|
|
/* Radio template */
|
|
static const struct v4l2_file_operations usbvision_radio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = usbvision_radio_open,
|
|
.release = usbvision_radio_close,
|
|
.poll = v4l2_ctrl_poll,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
.vidioc_g_tuner = vidioc_g_tuner,
|
|
.vidioc_s_tuner = vidioc_s_tuner,
|
|
.vidioc_g_frequency = vidioc_g_frequency,
|
|
.vidioc_s_frequency = vidioc_s_frequency,
|
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
};
|
|
|
|
static struct video_device usbvision_radio_template = {
|
|
.fops = &usbvision_radio_fops,
|
|
.name = "usbvision-radio",
|
|
.release = video_device_release_empty,
|
|
.ioctl_ops = &usbvision_radio_ioctl_ops,
|
|
};
|
|
|
|
|
|
static void usbvision_vdev_init(struct usb_usbvision *usbvision,
|
|
struct video_device *vdev,
|
|
const struct video_device *vdev_template,
|
|
const char *name)
|
|
{
|
|
struct usb_device *usb_dev = usbvision->dev;
|
|
|
|
if (!usb_dev) {
|
|
dev_err(&usbvision->dev->dev,
|
|
"%s: usbvision->dev is not set\n", __func__);
|
|
return;
|
|
}
|
|
|
|
*vdev = *vdev_template;
|
|
vdev->lock = &usbvision->v4l2_lock;
|
|
vdev->v4l2_dev = &usbvision->v4l2_dev;
|
|
snprintf(vdev->name, sizeof(vdev->name), "%s", name);
|
|
video_set_drvdata(vdev, usbvision);
|
|
}
|
|
|
|
/* unregister video4linux devices */
|
|
static void usbvision_unregister_video(struct usb_usbvision *usbvision)
|
|
{
|
|
/* Radio Device: */
|
|
if (video_is_registered(&usbvision->rdev)) {
|
|
PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
|
|
video_device_node_name(&usbvision->rdev));
|
|
video_unregister_device(&usbvision->rdev);
|
|
}
|
|
|
|
/* Video Device: */
|
|
if (video_is_registered(&usbvision->vdev)) {
|
|
PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
|
|
video_device_node_name(&usbvision->vdev));
|
|
video_unregister_device(&usbvision->vdev);
|
|
}
|
|
}
|
|
|
|
/* register video4linux devices */
|
|
static int usbvision_register_video(struct usb_usbvision *usbvision)
|
|
{
|
|
int res = -ENOMEM;
|
|
|
|
/* Video Device: */
|
|
usbvision_vdev_init(usbvision, &usbvision->vdev,
|
|
&usbvision_video_template, "USBVision Video");
|
|
if (!usbvision->have_tuner) {
|
|
v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
|
|
v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
|
|
v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
|
|
v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
|
|
}
|
|
if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
|
|
goto err_exit;
|
|
printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
|
|
usbvision->nr, video_device_node_name(&usbvision->vdev));
|
|
|
|
/* Radio Device: */
|
|
if (usbvision_device_data[usbvision->dev_model].radio) {
|
|
/* usbvision has radio */
|
|
usbvision_vdev_init(usbvision, &usbvision->rdev,
|
|
&usbvision_radio_template, "USBVision Radio");
|
|
if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
|
|
goto err_exit;
|
|
printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
|
|
usbvision->nr, video_device_node_name(&usbvision->rdev));
|
|
}
|
|
/* all done */
|
|
return 0;
|
|
|
|
err_exit:
|
|
dev_err(&usbvision->dev->dev,
|
|
"USBVision[%d]: video_register_device() failed\n",
|
|
usbvision->nr);
|
|
usbvision_unregister_video(usbvision);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* usbvision_alloc()
|
|
*
|
|
* This code allocates the struct usb_usbvision.
|
|
* It is filled with default values.
|
|
*
|
|
* Returns NULL on error, a pointer to usb_usbvision else.
|
|
*
|
|
*/
|
|
static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
|
|
struct usb_interface *intf)
|
|
{
|
|
struct usb_usbvision *usbvision;
|
|
|
|
usbvision = kzalloc(sizeof(*usbvision), GFP_KERNEL);
|
|
if (!usbvision)
|
|
return NULL;
|
|
|
|
usbvision->dev = dev;
|
|
if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
|
|
goto err_free;
|
|
|
|
if (v4l2_ctrl_handler_init(&usbvision->hdl, 4))
|
|
goto err_unreg;
|
|
usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl;
|
|
mutex_init(&usbvision->v4l2_lock);
|
|
|
|
/* prepare control urb for control messages during interrupts */
|
|
usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
|
|
if (!usbvision->ctrl_urb)
|
|
goto err_unreg;
|
|
|
|
return usbvision;
|
|
|
|
err_unreg:
|
|
v4l2_ctrl_handler_free(&usbvision->hdl);
|
|
v4l2_device_unregister(&usbvision->v4l2_dev);
|
|
err_free:
|
|
kfree(usbvision);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* usbvision_release()
|
|
*
|
|
* This code does final release of struct usb_usbvision. This happens
|
|
* after the device is disconnected -and- all clients closed their files.
|
|
*
|
|
*/
|
|
static void usbvision_release(struct usb_usbvision *usbvision)
|
|
{
|
|
PDEBUG(DBG_PROBE, "");
|
|
|
|
usbvision->initialized = 0;
|
|
|
|
usbvision_remove_sysfs(&usbvision->vdev);
|
|
usbvision_unregister_video(usbvision);
|
|
kfree(usbvision->alt_max_pkt_size);
|
|
|
|
usb_free_urb(usbvision->ctrl_urb);
|
|
|
|
v4l2_ctrl_handler_free(&usbvision->hdl);
|
|
v4l2_device_unregister(&usbvision->v4l2_dev);
|
|
kfree(usbvision);
|
|
|
|
PDEBUG(DBG_PROBE, "success");
|
|
}
|
|
|
|
|
|
/*********************** usb interface **********************************/
|
|
|
|
static void usbvision_configure_video(struct usb_usbvision *usbvision)
|
|
{
|
|
int model;
|
|
|
|
if (!usbvision)
|
|
return;
|
|
|
|
model = usbvision->dev_model;
|
|
usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
|
|
|
|
if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
|
|
usbvision->vin_reg2_preset =
|
|
usbvision_device_data[usbvision->dev_model].vin_reg2;
|
|
} else {
|
|
usbvision->vin_reg2_preset = 0;
|
|
}
|
|
|
|
usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
|
|
usbvision->video_inputs = usbvision_device_data[model].video_channels;
|
|
usbvision->ctl_input = 0;
|
|
usbvision->radio_freq = 87.5 * 16000;
|
|
usbvision->tv_freq = 400 * 16;
|
|
|
|
/* This should be here to make i2c clients to be able to register */
|
|
/* first switch off audio */
|
|
if (usbvision_device_data[model].audio_channels > 0)
|
|
usbvision_audio_off(usbvision);
|
|
/* and then power up the tuner */
|
|
usbvision_power_on(usbvision);
|
|
usbvision_i2c_register(usbvision);
|
|
}
|
|
|
|
/*
|
|
* usbvision_probe()
|
|
*
|
|
* This procedure queries device descriptor and accepts the interface
|
|
* if it looks like USBVISION video device
|
|
*
|
|
*/
|
|
static int usbvision_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *devid)
|
|
{
|
|
struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
|
|
struct usb_interface *uif;
|
|
__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
|
|
const struct usb_host_interface *interface;
|
|
struct usb_usbvision *usbvision = NULL;
|
|
const struct usb_endpoint_descriptor *endpoint;
|
|
int model, i, ret;
|
|
|
|
PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
|
|
le16_to_cpu(dev->descriptor.idVendor),
|
|
le16_to_cpu(dev->descriptor.idProduct), ifnum);
|
|
|
|
model = devid->driver_info;
|
|
if (model < 0 || model >= usbvision_device_data_size) {
|
|
PDEBUG(DBG_PROBE, "model out of bounds %d", model);
|
|
ret = -ENODEV;
|
|
goto err_usb;
|
|
}
|
|
printk(KERN_INFO "%s: %s found\n", __func__,
|
|
usbvision_device_data[model].model_string);
|
|
|
|
if (usbvision_device_data[model].interface >= 0)
|
|
interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
|
|
else if (ifnum < dev->actconfig->desc.bNumInterfaces)
|
|
interface = &dev->actconfig->interface[ifnum]->altsetting[0];
|
|
else {
|
|
dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
|
|
ifnum, dev->actconfig->desc.bNumInterfaces - 1);
|
|
ret = -ENODEV;
|
|
goto err_usb;
|
|
}
|
|
|
|
if (interface->desc.bNumEndpoints < 2) {
|
|
dev_err(&intf->dev, "interface %d has %d endpoints, but must have minimum 2\n",
|
|
ifnum, interface->desc.bNumEndpoints);
|
|
ret = -ENODEV;
|
|
goto err_usb;
|
|
}
|
|
endpoint = &interface->endpoint[1].desc;
|
|
|
|
if (!usb_endpoint_xfer_isoc(endpoint)) {
|
|
dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
|
|
__func__, ifnum);
|
|
dev_err(&intf->dev, "%s: Endpoint attributes %d",
|
|
__func__, endpoint->bmAttributes);
|
|
ret = -ENODEV;
|
|
goto err_usb;
|
|
}
|
|
if (usb_endpoint_dir_out(endpoint)) {
|
|
dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
|
|
__func__, ifnum);
|
|
ret = -ENODEV;
|
|
goto err_usb;
|
|
}
|
|
|
|
usbvision = usbvision_alloc(dev, intf);
|
|
if (!usbvision) {
|
|
dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
|
|
ret = -ENOMEM;
|
|
goto err_usb;
|
|
}
|
|
|
|
if (dev->descriptor.bNumConfigurations > 1)
|
|
usbvision->bridge_type = BRIDGE_NT1004;
|
|
else if (model == DAZZLE_DVC_90_REV_1_SECAM)
|
|
usbvision->bridge_type = BRIDGE_NT1005;
|
|
else
|
|
usbvision->bridge_type = BRIDGE_NT1003;
|
|
PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
|
|
|
|
/* 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) {
|
|
ret = -ENOMEM;
|
|
goto err_pkt;
|
|
}
|
|
|
|
for (i = 0; i < usbvision->num_alt; i++) {
|
|
u16 tmp;
|
|
|
|
if (uif->altsetting[i].desc.bNumEndpoints < 2) {
|
|
ret = -ENODEV;
|
|
goto err_pkt;
|
|
}
|
|
|
|
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]);
|
|
}
|
|
|
|
|
|
usbvision->nr = usbvision_nr++;
|
|
|
|
spin_lock_init(&usbvision->queue_lock);
|
|
init_waitqueue_head(&usbvision->wait_frame);
|
|
init_waitqueue_head(&usbvision->wait_stream);
|
|
|
|
usbvision->have_tuner = usbvision_device_data[model].tuner;
|
|
if (usbvision->have_tuner)
|
|
usbvision->tuner_type = usbvision_device_data[model].tuner_type;
|
|
|
|
usbvision->dev_model = model;
|
|
usbvision->remove_pending = 0;
|
|
usbvision->iface = ifnum;
|
|
usbvision->iface_alt = 0;
|
|
usbvision->video_endp = endpoint->bEndpointAddress;
|
|
usbvision->isoc_packet_size = 0;
|
|
usbvision->usb_bandwidth = 0;
|
|
usbvision->user = 0;
|
|
usbvision->streaming = stream_off;
|
|
usbvision_configure_video(usbvision);
|
|
usbvision_register_video(usbvision);
|
|
|
|
usbvision_create_sysfs(&usbvision->vdev);
|
|
|
|
PDEBUG(DBG_PROBE, "success");
|
|
return 0;
|
|
|
|
err_pkt:
|
|
usbvision_release(usbvision);
|
|
err_usb:
|
|
usb_put_dev(dev);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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 usbvision_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
|
|
|
|
PDEBUG(DBG_PROBE, "");
|
|
|
|
if (!usbvision) {
|
|
pr_err("%s: usb_get_intfdata() failed\n", __func__);
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&usbvision->v4l2_lock);
|
|
|
|
/* At this time we ask to cancel outstanding URBs */
|
|
usbvision_stop_isoc(usbvision);
|
|
|
|
v4l2_device_disconnect(&usbvision->v4l2_dev);
|
|
usbvision_i2c_unregister(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 */
|
|
|
|
mutex_unlock(&usbvision->v4l2_lock);
|
|
|
|
if (usbvision->user) {
|
|
printk(KERN_INFO "%s: In use, disconnect pending\n",
|
|
__func__);
|
|
wake_up_interruptible(&usbvision->wait_frame);
|
|
wake_up_interruptible(&usbvision->wait_stream);
|
|
} else {
|
|
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 err_code;
|
|
|
|
PDEBUG(DBG_PROBE, "");
|
|
|
|
PDEBUG(DBG_IO, "IO debugging is enabled [video]");
|
|
PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
|
|
PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
|
|
|
|
/* disable planar mode support unless compression enabled */
|
|
if (isoc_mode != 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 */
|
|
}
|
|
|
|
err_code = usb_register(&usbvision_driver);
|
|
|
|
if (err_code == 0) {
|
|
printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
|
|
PDEBUG(DBG_PROBE, "success");
|
|
}
|
|
return err_code;
|
|
}
|
|
|
|
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);
|