| /* |
| * USB USBVISION Video device driver 0.9.10 |
| * |
| * |
| * |
| * 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. |
| * - Add audio on endpoint 3 for nt1004 chip. |
| * Seems impossible, needs a codec interface. Which one? |
| * - Clean up the driver. |
| * - optimization for performance. |
| * - Add Videotext capability (VBI). Working on it..... |
| * - Check audio for other devices |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| #include <linux/timer.h> |
| #include <linux/slab.h> |
| #include <linux/mm.h> |
| #include <linux/highmem.h> |
| #include <linux/vmalloc.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/spinlock.h> |
| #include <linux/io.h> |
| #include <linux/videodev2.h> |
| #include <linux/i2c.h> |
| |
| #include <media/saa7115.h> |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/tuner.h> |
| |
| #include <linux/workqueue.h> |
| |
| #include "usbvision.h" |
| #include "usbvision-cards.h" |
| |
| #define DRIVER_AUTHOR \ |
| "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \ |
| "Dwaine Garden <DwaineGarden@rogers.com>" |
| #define DRIVER_NAME "usbvision" |
| #define DRIVER_ALIAS "USBVision" |
| #define DRIVER_DESC "USBVision USB Video Device Driver for Linux" |
| #define DRIVER_LICENSE "GPL" |
| #define USBVISION_VERSION_STRING "0.9.11" |
| |
| #define ENABLE_HEXDUMP 0 /* Enable if you need it */ |
| |
| |
| #ifdef USBVISION_DEBUG |
| #define PDEBUG(level, fmt, args...) { \ |
| if (video_debug & (level)) \ |
| printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ |
| __func__, __LINE__ , ## args); \ |
| } |
| #else |
| #define PDEBUG(level, fmt, args...) do {} while (0) |
| #endif |
| |
| #define DBG_IO (1 << 1) |
| #define DBG_PROBE (1 << 2) |
| #define DBG_MMAP (1 << 3) |
| |
| /* String operations */ |
| #define rmspace(str) while (*str == ' ') str++; |
| #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++; |
| |
| |
| /* sequential number of usbvision device */ |
| static int usbvision_nr; |
| |
| 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" } |
| }; |
| |
| /* Function prototypes */ |
| static void usbvision_release(struct usb_usbvision *usbvision); |
| |
| /* Default initialization of device driver parameters */ |
| /* Set the default format for ISOC endpoint */ |
| static int isoc_mode = ISOC_MODE_COMPRESS; |
| /* Set the default Debug Mode of the device driver */ |
| static int video_debug; |
| /* Set the default device to power on at startup */ |
| static int power_on_at_open = 1; |
| /* Sequential Number of Video Device */ |
| static int video_nr = -1; |
| /* Sequential Number of Radio Device */ |
| static int radio_nr = -1; |
| |
| /* Grab parameters for the device driver */ |
| |
| /* Showing parameters under SYSFS */ |
| module_param(isoc_mode, int, 0444); |
| module_param(video_debug, int, 0444); |
| module_param(power_on_at_open, int, 0444); |
| module_param(video_nr, int, 0444); |
| module_param(radio_nr, int, 0444); |
| |
| MODULE_PARM_DESC(isoc_mode, " 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(power_on_at_open, " 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)"); |
| |
| |
| /* Misc stuff */ |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE(DRIVER_LICENSE); |
| MODULE_VERSION(USBVISION_VERSION_STRING); |
| MODULE_ALIAS(DRIVER_ALIAS); |
| |
| |
| /*****************************************************************************/ |
| /* 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 */ |
| /*****************************************************************************/ |
| |
| #define YES_NO(x) ((x) ? "Yes" : "No") |
| |
| static inline struct usb_usbvision *cd_to_usbvision(struct device *cd) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| return video_get_drvdata(vdev); |
| } |
| |
| static ssize_t show_version(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "%s\n", USBVISION_VERSION_STRING); |
| } |
| static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); |
| |
| static ssize_t show_model(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| return sprintf(buf, "%s\n", |
| usbvision_device_data[usbvision->dev_model].model_string); |
| } |
| static DEVICE_ATTR(model, S_IRUGO, show_model, NULL); |
| |
| static ssize_t show_hue(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| struct v4l2_control ctrl; |
| ctrl.id = V4L2_CID_HUE; |
| ctrl.value = 0; |
| if (usbvision->user) |
| call_all(usbvision, core, g_ctrl, &ctrl); |
| return sprintf(buf, "%d\n", ctrl.value); |
| } |
| static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); |
| |
| static ssize_t show_contrast(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| struct v4l2_control ctrl; |
| ctrl.id = V4L2_CID_CONTRAST; |
| ctrl.value = 0; |
| if (usbvision->user) |
| call_all(usbvision, core, g_ctrl, &ctrl); |
| return sprintf(buf, "%d\n", ctrl.value); |
| } |
| static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); |
| |
| static ssize_t show_brightness(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| struct v4l2_control ctrl; |
| ctrl.id = V4L2_CID_BRIGHTNESS; |
| ctrl.value = 0; |
| if (usbvision->user) |
| call_all(usbvision, core, g_ctrl, &ctrl); |
| return sprintf(buf, "%d\n", ctrl.value); |
| } |
| static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); |
| |
| static ssize_t show_saturation(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| struct v4l2_control ctrl; |
| ctrl.id = V4L2_CID_SATURATION; |
| ctrl.value = 0; |
| if (usbvision->user) |
| call_all(usbvision, core, g_ctrl, &ctrl); |
| return sprintf(buf, "%d\n", ctrl.value); |
| } |
| static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); |
| |
| static ssize_t show_streaming(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| return sprintf(buf, "%s\n", |
| YES_NO(usbvision->streaming == stream_on ? 1 : 0)); |
| } |
| static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); |
| |
| static ssize_t show_compression(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| return sprintf(buf, "%s\n", |
| YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS)); |
| } |
| static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); |
| |
| static ssize_t show_device_bridge(struct device *cd, |
| struct device_attribute *attr, char *buf) |
| { |
| struct video_device *vdev = |
| container_of(cd, struct video_device, dev); |
| struct usb_usbvision *usbvision = video_get_drvdata(vdev); |
| return sprintf(buf, "%d\n", usbvision->bridge_type); |
| } |
| static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); |
| |
| static void usbvision_create_sysfs(struct video_device *vdev) |
| { |
| int res; |
| |
| if (!vdev) |
| return; |
| do { |
| res = device_create_file(&vdev->dev, &dev_attr_version); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_model); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_hue); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_contrast); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_brightness); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_saturation); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_streaming); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_compression); |
| if (res < 0) |
| break; |
| res = device_create_file(&vdev->dev, &dev_attr_bridge); |
| if (res >= 0) |
| return; |
| } while (0); |
| |
| dev_err(&vdev->dev, "%s error: %d\n", __func__, res); |
| } |
| |
| static void usbvision_remove_sysfs(struct video_device *vdev) |
| { |
| if (vdev) { |
| 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); |
| } |
| } |
| |
| /* |
| * 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. |
| * |
| */ |
| static int usbvision_v4l2_open(struct file *file) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| int err_code = 0; |
| |
| PDEBUG(DBG_IO, "open"); |
| |
| usbvision_reset_power_off_timer(usbvision); |
| |
| if (usbvision->user) |
| err_code = -EBUSY; |
| else { |
| /* Allocate memory for the scratch ring buffer */ |
| err_code = usbvision_scratch_alloc(usbvision); |
| if (isoc_mode == ISOC_MODE_COMPRESS) { |
| /* Allocate intermediate decompression buffers |
| only if needed */ |
| err_code = usbvision_decompress_alloc(usbvision); |
| } |
| if (err_code) { |
| /* 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 (!err_code) { |
| if (usbvision->power == 0) { |
| usbvision_power_on(usbvision); |
| usbvision_i2c_register(usbvision); |
| } |
| |
| /* Send init sequence only once, it's large! */ |
| if (!usbvision->initialized) { |
| int setup_ok = 0; |
| setup_ok = usbvision_setup(usbvision, isoc_mode); |
| if (setup_ok) |
| usbvision->initialized = 1; |
| else |
| err_code = -EBUSY; |
| } |
| |
| if (!err_code) { |
| usbvision_begin_streaming(usbvision); |
| err_code = usbvision_init_isoc(usbvision); |
| /* device must be initialized before isoc transfer */ |
| usbvision_muxsel(usbvision, 0); |
| usbvision->user++; |
| } else { |
| if (power_on_at_open) { |
| usbvision_i2c_unregister(usbvision); |
| usbvision_power_off(usbvision); |
| usbvision->initialized = 0; |
| } |
| } |
| } |
| |
| /* prepare queues */ |
| usbvision_empty_framequeues(usbvision); |
| |
| PDEBUG(DBG_IO, "success"); |
| return err_code; |
| } |
| |
| /* |
| * 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(). |
| * |
| */ |
| static int usbvision_v4l2_close(struct file *file) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| PDEBUG(DBG_IO, "close"); |
| |
| usbvision_audio_off(usbvision); |
| usbvision_restart_isoc(usbvision); |
| usbvision_stop_isoc(usbvision); |
| |
| usbvision_decompress_free(usbvision); |
| usbvision_frames_free(usbvision); |
| usbvision_empty_framequeues(usbvision); |
| usbvision_scratch_free(usbvision); |
| |
| usbvision->user--; |
| |
| if (power_on_at_open) { |
| /* power off in a little while |
| to avoid off/on every close/open short sequences */ |
| usbvision_set_power_off_timer(usbvision); |
| usbvision->initialized = 0; |
| } |
| |
| if (usbvision->remove_pending) { |
| printk(KERN_INFO "%s: Final disconnect\n", __func__); |
| usbvision_release(usbvision); |
| } |
| |
| PDEBUG(DBG_IO, "success"); |
| return 0; |
| } |
| |
| |
| /* |
| * usbvision_ioctl() |
| * |
| * This is part of Video 4 Linux API. The procedure handles ioctl() calls. |
| * |
| */ |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| static int vidioc_g_register(struct file *file, void *priv, |
| struct v4l2_dbg_register *reg) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| int err_code; |
| |
| if (!v4l2_chip_match_host(®->match)) |
| return -EINVAL; |
| /* NT100x has a 8-bit register space */ |
| err_code = usbvision_read_reg(usbvision, reg->reg&0xff); |
| if (err_code < 0) { |
| dev_err(&usbvision->vdev->dev, |
| "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n", |
| __func__, err_code); |
| return err_code; |
| } |
| reg->val = err_code; |
| reg->size = 1; |
| return 0; |
| } |
| |
| static int vidioc_s_register(struct file *file, void *priv, |
| struct v4l2_dbg_register *reg) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| int err_code; |
| |
| if (!v4l2_chip_match_host(®->match)) |
| return -EINVAL; |
| /* NT100x has a 8-bit register space */ |
| err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val); |
| if (err_code < 0) { |
| dev_err(&usbvision->vdev->dev, |
| "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n", |
| __func__, err_code); |
| return err_code; |
| } |
| return 0; |
| } |
| #endif |
| |
| static int vidioc_querycap(struct file *file, void *priv, |
| struct v4l2_capability *vc) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| strlcpy(vc->driver, "USBVision", sizeof(vc->driver)); |
| strlcpy(vc->card, |
| usbvision_device_data[usbvision->dev_model].model_string, |
| sizeof(vc->card)); |
| usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info)); |
| 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) |
| { |
| 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->audioset = 1; |
| 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 = V4L2_STD_PAL; |
| 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 = 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; |
| } |
| |
| 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, core, s_std, usbvision->tvnorm_id); |
| /* propagate the change to the decoder */ |
| usbvision_muxsel(usbvision, usbvision->ctl_input); |
| |
| return 0; |
| } |
| |
| static int vidioc_g_tuner(struct file *file, void *priv, |
| struct v4l2_tuner *vt) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| if (!usbvision->have_tuner || vt->index) /* Only tuner 0 */ |
| return -EINVAL; |
| if (usbvision->radio) { |
| strcpy(vt->name, "Radio"); |
| vt->type = V4L2_TUNER_RADIO; |
| } else { |
| strcpy(vt->name, "Television"); |
| } |
| /* Let clients fill in the remainder of this struct */ |
| call_all(usbvision, tuner, g_tuner, vt); |
| |
| return 0; |
| } |
| |
| static int vidioc_s_tuner(struct file *file, void *priv, |
| struct v4l2_tuner *vt) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| /* Only no or one tuner for now */ |
| if (!usbvision->have_tuner || 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); |
| |
| 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; |
| |
| return 0; |
| } |
| |
| static int vidioc_s_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *freq) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| /* Only no or one tuner for now */ |
| if (!usbvision->have_tuner || freq->tuner) |
| return -EINVAL; |
| |
| usbvision->freq = freq->frequency; |
| call_all(usbvision, tuner, s_frequency, freq); |
| |
| return 0; |
| } |
| |
| static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| if (usbvision->radio) |
| strcpy(a->name, "Radio"); |
| else |
| strcpy(a->name, "TV"); |
| |
| return 0; |
| } |
| |
| static int vidioc_s_audio(struct file *file, void *fh, |
| struct v4l2_audio *a) |
| { |
| if (a->index) |
| return -EINVAL; |
| return 0; |
| } |
| |
| static int vidioc_queryctrl(struct file *file, void *priv, |
| struct v4l2_queryctrl *ctrl) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| call_all(usbvision, core, queryctrl, ctrl); |
| |
| if (!ctrl->type) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int vidioc_g_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctrl) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| call_all(usbvision, core, g_ctrl, ctrl); |
| return 0; |
| } |
| |
| static int vidioc_s_ctrl(struct file *file, void *priv, |
| struct v4l2_control *ctrl) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| |
| call_all(usbvision, core, s_ctrl, ctrl); |
| 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 = 0; |
| 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; |
| 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; |
| |
| 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_v4l2_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 == NULL)) |
| 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); |
| |
| /* For now, forget the frame if it has not been read in one shot. */ |
| /* 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; |
| /* } */ |
| |
| 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; |
| 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; |
| 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))) { |
| PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); |
| return -EAGAIN; |
| } |
| start += PAGE_SIZE; |
| pos += PAGE_SIZE; |
| size -= PAGE_SIZE; |
| } |
| |
| return 0; |
| } |
| |
| |
| /* |
| * 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 (usbvision->user) { |
| dev_err(&usbvision->rdev->dev, |
| "%s: Someone tried to open an already opened USBVision Radio!\n", |
| __func__); |
| err_code = -EBUSY; |
| } else { |
| if (power_on_at_open) { |
| usbvision_reset_power_off_timer(usbvision); |
| if (usbvision->power == 0) { |
| usbvision_power_on(usbvision); |
| usbvision_i2c_register(usbvision); |
| } |
| } |
| |
| /* 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++; |
| } |
| |
| if (err_code) { |
| if (power_on_at_open) { |
| usbvision_i2c_unregister(usbvision); |
| usbvision_power_off(usbvision); |
| usbvision->initialized = 0; |
| } |
| } |
| out: |
| return err_code; |
| } |
| |
| |
| static int usbvision_radio_close(struct file *file) |
| { |
| struct usb_usbvision *usbvision = video_drvdata(file); |
| int err_code = 0; |
| |
| PDEBUG(DBG_IO, ""); |
| |
| /* Set packet size to 0 */ |
| usbvision->iface_alt = 0; |
| err_code = usb_set_interface(usbvision->dev, usbvision->iface, |
| usbvision->iface_alt); |
| |
| usbvision_audio_off(usbvision); |
| usbvision->radio = 0; |
| usbvision->user--; |
| |
| if (power_on_at_open) { |
| usbvision_set_power_off_timer(usbvision); |
| usbvision->initialized = 0; |
| } |
| |
| if (usbvision->remove_pending) { |
| printk(KERN_INFO "%s: Final disconnect\n", __func__); |
| usbvision_release(usbvision); |
| } |
| |
| PDEBUG(DBG_IO, "success"); |
| return err_code; |
| } |
| |
| /* 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, |
| /* .poll = video_poll, */ |
| }; |
| |
| 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_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, |
| .vidioc_s_audio = vidioc_s_audio, |
| .vidioc_g_ctrl = vidioc_g_ctrl, |
| .vidioc_s_ctrl = vidioc_s_ctrl, |
| .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, |
| #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, |
| .tvnorms = USBVISION_NORMS, |
| .current_norm = V4L2_STD_PAL |
| }; |
| |
| |
| /* Radio template */ |
| static const struct v4l2_file_operations usbvision_radio_fops = { |
| .owner = THIS_MODULE, |
| .open = usbvision_radio_open, |
| .release = usbvision_radio_close, |
| .unlocked_ioctl = video_ioctl2, |
| }; |
| |
| static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = { |
| .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, |
| .vidioc_s_audio = vidioc_s_audio, |
| .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, |
| }; |
| |
| static struct video_device usbvision_radio_template = { |
| .fops = &usbvision_radio_fops, |
| .name = "usbvision-radio", |
| .release = video_device_release, |
| .ioctl_ops = &usbvision_radio_ioctl_ops, |
| |
| .tvnorms = USBVISION_NORMS, |
| .current_norm = V4L2_STD_PAL |
| }; |
| |
| |
| 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) { |
| dev_err(&usbvision->dev->dev, |
| "%s: usbvision->dev is not set\n", __func__); |
| return NULL; |
| } |
| |
| vdev = video_device_alloc(); |
| if (NULL == vdev) |
| return NULL; |
| *vdev = *vdev_template; |
| /* Locking in file operations other than ioctl should be done |
| by the driver, not the V4L2 core. |
| This driver needs auditing so that this flag can be removed. */ |
| set_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags); |
| vdev->lock = &usbvision->v4l2_lock; |
| vdev->v4l2_dev = &usbvision->v4l2_dev; |
| 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) |
| { |
| /* Radio Device: */ |
| if (usbvision->rdev) { |
| PDEBUG(DBG_PROBE, "unregister %s [v4l2]", |
| video_device_node_name(usbvision->rdev)); |
| if (video_is_registered(usbvision->rdev)) |
| video_unregister_device(usbvision->rdev); |
| else |
| video_device_release(usbvision->rdev); |
| usbvision->rdev = NULL; |
| } |
| |
| /* Video Device: */ |
| if (usbvision->vdev) { |
| PDEBUG(DBG_PROBE, "unregister %s [v4l2]", |
| video_device_node_name(usbvision->vdev)); |
| if (video_is_registered(usbvision->vdev)) |
| video_unregister_device(usbvision->vdev); |
| else |
| video_device_release(usbvision->vdev); |
| usbvision->vdev = NULL; |
| } |
| } |
| |
| /* register video4linux devices */ |
| static int __devinit usbvision_register_video(struct usb_usbvision *usbvision) |
| { |
| /* Video Device: */ |
| usbvision->vdev = usbvision_vdev_init(usbvision, |
| &usbvision_video_template, |
| "USBVision Video"); |
| if (usbvision->vdev == NULL) |
| goto err_exit; |
| 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->rdev = usbvision_vdev_init(usbvision, |
| &usbvision_radio_template, |
| "USBVision Radio"); |
| if (usbvision->rdev == NULL) |
| goto err_exit; |
| 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 -1; |
| } |
| |
| /* |
| * 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(struct usb_usbvision), GFP_KERNEL); |
| if (usbvision == NULL) |
| return NULL; |
| |
| usbvision->dev = dev; |
| if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev)) |
| goto err_free; |
| |
| 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 == NULL) |
| goto err_unreg; |
| init_waitqueue_head(&usbvision->ctrl_urb_wq); |
| |
| usbvision_init_power_off_timer(usbvision); |
| |
| return usbvision; |
| |
| err_unreg: |
| 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_reset_power_off_timer(usbvision); |
| |
| usbvision->initialized = 0; |
| |
| usbvision_remove_sysfs(usbvision->vdev); |
| usbvision_unregister_video(usbvision); |
| |
| usb_free_urb(usbvision->ctrl_urb); |
| |
| 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 == NULL) |
| 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; |
| |
| /* 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); |
| if (!power_on_at_open) { |
| /* and then power up the noisy 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 __devinit 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; |
| |
| PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u", |
| dev->descriptor.idVendor, |
| 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); |
| return -ENODEV; |
| } |
| 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 |
| interface = &dev->actconfig->interface[ifnum]->altsetting[0]; |
| 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); |
| return -ENODEV; |
| } |
| if (usb_endpoint_dir_out(endpoint)) { |
| dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n", |
| __func__, ifnum); |
| return -ENODEV; |
| } |
| |
| usbvision = usbvision_alloc(dev, intf); |
| if (usbvision == NULL) { |
| dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__); |
| return -ENOMEM; |
| } |
| |
| 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 == NULL) { |
| dev_err(&intf->dev, "usbvision: out of memory!\n"); |
| 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]); |
| } |
| |
| |
| usbvision->nr = usbvision_nr++; |
| |
| 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; |
| } |
| |
| |
| /* |
| * 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 = to_usbvision(usb_get_intfdata(intf)); |
| |
| PDEBUG(DBG_PROBE, ""); |
| |
| if (usbvision == NULL) { |
| 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); |
| |
| if (usbvision->power) { |
| usbvision_i2c_unregister(usbvision); |
| 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 */ |
| |
| 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 = __devexit_p(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); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |