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path: root/drivers/media/usb/usbvision/usbvision-video.c
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Diffstat (limited to 'drivers/media/usb/usbvision/usbvision-video.c')
-rw-r--r--drivers/media/usb/usbvision/usbvision-video.c1720
1 files changed, 1720 insertions, 0 deletions
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
new file mode 100644
index 000000000000..8a4317979a43
--- /dev/null
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -0,0 +1,1720 @@
+/*
+ * 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");
+
+ if (mutex_lock_interruptible(&usbvision->v4l2_lock))
+ return -ERESTARTSYS;
+ 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);
+ mutex_unlock(&usbvision->v4l2_lock);
+
+ 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");
+
+ mutex_lock(&usbvision->v4l2_lock);
+ 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);
+ }
+ mutex_unlock(&usbvision->v4l2_lock);
+
+ 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(&reg->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(&reg->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_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 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;
+ 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;
+}
+
+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;
+ 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:
+ mutex_unlock(&usbvision->v4l2_lock);
+ 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, "");
+
+ mutex_lock(&usbvision->v4l2_lock);
+ /* 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);
+ }
+
+ mutex_unlock(&usbvision->v4l2_lock);
+ 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;
+ 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:
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 06:26:39 +0000