V4L/DVB (8427): videodev: split off the ioctl handling into v4l2-ioctl.c
Hans Verkuil [Sun, 20 Jul 2008 11:43:17 +0000 (08:43 -0300)]
videodev.c became top-heavy so all the ioctl processing has been split off
into v4l2-ioctl.c. This means videodev.c is back to its original purpose:
creating and registering v4l devices.

Since videodev.c and v4l2-ioctl.c should still remain one module (as least
for now) I also had to rename videodev.c to v4l2-dev.c to prevent a
circular dependency when building a videodev.ko module. This is not a bad
thing, since the source and header now have the same name. And the v4l2-
prefix is useful to see which sources are generic v4l2 support code.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/Makefile
drivers/media/video/v4l2-dev.c [new file with mode: 0644]
drivers/media/video/videodev.c

index 45d5db5..9de1e48 100644 (file)
@@ -10,6 +10,8 @@ msp3400-objs  :=      msp3400-driver.o msp3400-kthreads.o
 
 stkwebcam-objs :=      stk-webcam.o stk-sensor.o
 
+videodev-objs  :=      v4l2-dev.o v4l2-ioctl.o
+
 obj-$(CONFIG_VIDEO_DEV) += videodev.o compat_ioctl32.o v4l2-int-device.o
 
 obj-$(CONFIG_VIDEO_V4L2_COMMON) += v4l2-common.o
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
new file mode 100644 (file)
index 0000000..2dd82b1
--- /dev/null
@@ -0,0 +1,424 @@
+/*
+ * Video capture interface for Linux version 2
+ *
+ *     A generic video device interface for the LINUX operating system
+ *     using a set of device structures/vectors for low level operations.
+ *
+ *     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.
+ *
+ * Authors:    Alan Cox, <alan@redhat.com> (version 1)
+ *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
+ *
+ * Fixes:      20000516  Claudio Matsuoka <claudio@conectiva.com>
+ *             - Added procfs support
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kmod.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <media/v4l2-common.h>
+
+#define VIDEO_NUM_DEVICES      256
+#define VIDEO_NAME              "video4linux"
+
+/*
+ *     sysfs stuff
+ */
+
+static ssize_t show_index(struct device *cd,
+                        struct device_attribute *attr, char *buf)
+{
+       struct video_device *vfd = container_of(cd, struct video_device,
+                                               class_dev);
+       return sprintf(buf, "%i\n", vfd->index);
+}
+
+static ssize_t show_name(struct device *cd,
+                        struct device_attribute *attr, char *buf)
+{
+       struct video_device *vfd = container_of(cd, struct video_device,
+                                               class_dev);
+       return sprintf(buf, "%.*s\n", (int)sizeof(vfd->name), vfd->name);
+}
+
+static struct device_attribute video_device_attrs[] = {
+       __ATTR(name, S_IRUGO, show_name, NULL),
+       __ATTR(index, S_IRUGO, show_index, NULL),
+       __ATTR_NULL
+};
+
+struct video_device *video_device_alloc(void)
+{
+       struct video_device *vfd;
+
+       vfd = kzalloc(sizeof(*vfd), GFP_KERNEL);
+       return vfd;
+}
+EXPORT_SYMBOL(video_device_alloc);
+
+void video_device_release(struct video_device *vfd)
+{
+       kfree(vfd);
+}
+EXPORT_SYMBOL(video_device_release);
+
+static void video_release(struct device *cd)
+{
+       struct video_device *vfd = container_of(cd, struct video_device,
+                                                               class_dev);
+
+#if 1
+       /* needed until all drivers are fixed */
+       if (!vfd->release)
+               return;
+#endif
+       vfd->release(vfd);
+}
+
+static struct class video_class = {
+       .name = VIDEO_NAME,
+       .dev_attrs = video_device_attrs,
+       .dev_release = video_release,
+};
+
+/*
+ *     Active devices
+ */
+
+static struct video_device *video_device[VIDEO_NUM_DEVICES];
+static DEFINE_MUTEX(videodev_lock);
+
+struct video_device *video_devdata(struct file *file)
+{
+       return video_device[iminor(file->f_path.dentry->d_inode)];
+}
+EXPORT_SYMBOL(video_devdata);
+
+/*
+ *     Open a video device - FIXME: Obsoleted
+ */
+static int video_open(struct inode *inode, struct file *file)
+{
+       unsigned int minor = iminor(inode);
+       int err = 0;
+       struct video_device *vfl;
+       const struct file_operations *old_fops;
+
+       if (minor >= VIDEO_NUM_DEVICES)
+               return -ENODEV;
+       lock_kernel();
+       mutex_lock(&videodev_lock);
+       vfl = video_device[minor];
+       if (vfl == NULL) {
+               mutex_unlock(&videodev_lock);
+               request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
+               mutex_lock(&videodev_lock);
+               vfl = video_device[minor];
+               if (vfl == NULL) {
+                       mutex_unlock(&videodev_lock);
+                       unlock_kernel();
+                       return -ENODEV;
+               }
+       }
+       old_fops = file->f_op;
+       file->f_op = fops_get(vfl->fops);
+       if (file->f_op->open)
+               err = file->f_op->open(inode, file);
+       if (err) {
+               fops_put(file->f_op);
+               file->f_op = fops_get(old_fops);
+       }
+       fops_put(old_fops);
+       mutex_unlock(&videodev_lock);
+       unlock_kernel();
+       return err;
+}
+
+/*
+ * open/release helper functions -- handle exclusive opens
+ * Should be removed soon
+ */
+int video_exclusive_open(struct inode *inode, struct file *file)
+{
+       struct video_device *vfl = video_devdata(file);
+       int retval = 0;
+
+       mutex_lock(&vfl->lock);
+       if (vfl->users)
+               retval = -EBUSY;
+       else
+               vfl->users++;
+       mutex_unlock(&vfl->lock);
+       return retval;
+}
+EXPORT_SYMBOL(video_exclusive_open);
+
+int video_exclusive_release(struct inode *inode, struct file *file)
+{
+       struct video_device *vfl = video_devdata(file);
+
+       vfl->users--;
+       return 0;
+}
+EXPORT_SYMBOL(video_exclusive_release);
+
+/**
+ * get_index - assign stream number based on parent device
+ * @vdev: video_device to assign index number to, vdev->dev should be assigned
+ * @num: -1 if auto assign, requested number otherwise
+ *
+ *
+ * returns -ENFILE if num is already in use, a free index number if
+ * successful.
+ */
+static int get_index(struct video_device *vdev, int num)
+{
+       u32 used = 0;
+       const int max_index = sizeof(used) * 8 - 1;
+       int i;
+
+       /* Currently a single v4l driver instance cannot create more than
+          32 devices.
+          Increase to u64 or an array of u32 if more are needed. */
+       if (num > max_index) {
+               printk(KERN_ERR "videodev: %s num is too large\n", __func__);
+               return -EINVAL;
+       }
+
+       for (i = 0; i < VIDEO_NUM_DEVICES; i++) {
+               if (video_device[i] != NULL &&
+                   video_device[i] != vdev &&
+                   video_device[i]->dev == vdev->dev) {
+                       used |= 1 << video_device[i]->index;
+               }
+       }
+
+       if (num >= 0) {
+               if (used & (1 << num))
+                       return -ENFILE;
+               return num;
+       }
+
+       i = ffz(used);
+       return i > max_index ? -ENFILE : i;
+}
+
+static const struct file_operations video_fops;
+
+int video_register_device(struct video_device *vfd, int type, int nr)
+{
+       return video_register_device_index(vfd, type, nr, -1);
+}
+EXPORT_SYMBOL(video_register_device);
+
+/**
+ *     video_register_device - register video4linux devices
+ *     @vfd:  video device structure we want to register
+ *     @type: type of device to register
+ *     @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
+ *             -1 == first free)
+ *
+ *     The registration code assigns minor numbers based on the type
+ *     requested. -ENFILE is returned in all the device slots for this
+ *     category are full. If not then the minor field is set and the
+ *     driver initialize function is called (if non %NULL).
+ *
+ *     Zero is returned on success.
+ *
+ *     Valid types are
+ *
+ *     %VFL_TYPE_GRABBER - A frame grabber
+ *
+ *     %VFL_TYPE_VTX - A teletext device
+ *
+ *     %VFL_TYPE_VBI - Vertical blank data (undecoded)
+ *
+ *     %VFL_TYPE_RADIO - A radio card
+ */
+
+int video_register_device_index(struct video_device *vfd, int type, int nr,
+                                       int index)
+{
+       int i = 0;
+       int base;
+       int end;
+       int ret;
+       char *name_base;
+
+       switch (type) {
+       case VFL_TYPE_GRABBER:
+               base = MINOR_VFL_TYPE_GRABBER_MIN;
+               end = MINOR_VFL_TYPE_GRABBER_MAX+1;
+               name_base = "video";
+               break;
+       case VFL_TYPE_VTX:
+               base = MINOR_VFL_TYPE_VTX_MIN;
+               end = MINOR_VFL_TYPE_VTX_MAX+1;
+               name_base = "vtx";
+               break;
+       case VFL_TYPE_VBI:
+               base = MINOR_VFL_TYPE_VBI_MIN;
+               end = MINOR_VFL_TYPE_VBI_MAX+1;
+               name_base = "vbi";
+               break;
+       case VFL_TYPE_RADIO:
+               base = MINOR_VFL_TYPE_RADIO_MIN;
+               end = MINOR_VFL_TYPE_RADIO_MAX+1;
+               name_base = "radio";
+               break;
+       default:
+               printk(KERN_ERR "%s called with unknown type: %d\n",
+                      __func__, type);
+               return -1;
+       }
+
+       /* pick a minor number */
+       mutex_lock(&videodev_lock);
+       if (nr >= 0  &&  nr < end-base) {
+               /* use the one the driver asked for */
+               i = base + nr;
+               if (NULL != video_device[i]) {
+                       mutex_unlock(&videodev_lock);
+                       return -ENFILE;
+               }
+       } else {
+               /* use first free */
+               for (i = base; i < end; i++)
+                       if (NULL == video_device[i])
+                               break;
+               if (i == end) {
+                       mutex_unlock(&videodev_lock);
+                       return -ENFILE;
+               }
+       }
+       video_device[i] = vfd;
+       vfd->minor = i;
+
+       ret = get_index(vfd, index);
+       vfd->index = ret;
+
+       mutex_unlock(&videodev_lock);
+
+       if (ret < 0) {
+               printk(KERN_ERR "%s: get_index failed\n", __func__);
+               goto fail_minor;
+       }
+
+       mutex_init(&vfd->lock);
+
+       /* sysfs class */
+       memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
+       vfd->class_dev.class = &video_class;
+       vfd->class_dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor);
+       if (vfd->dev)
+               vfd->class_dev.parent = vfd->dev;
+       sprintf(vfd->class_dev.bus_id, "%s%d", name_base, i - base);
+       ret = device_register(&vfd->class_dev);
+       if (ret < 0) {
+               printk(KERN_ERR "%s: device_register failed\n", __func__);
+               goto fail_minor;
+       }
+
+#if 1
+       /* needed until all drivers are fixed */
+       if (!vfd->release)
+               printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
+                      "Please fix your driver for proper sysfs support, see "
+                      "http://lwn.net/Articles/36850/\n", vfd->name);
+#endif
+       return 0;
+
+fail_minor:
+       mutex_lock(&videodev_lock);
+       video_device[vfd->minor] = NULL;
+       vfd->minor = -1;
+       mutex_unlock(&videodev_lock);
+       return ret;
+}
+EXPORT_SYMBOL(video_register_device_index);
+
+/**
+ *     video_unregister_device - unregister a video4linux device
+ *     @vfd: the device to unregister
+ *
+ *     This unregisters the passed device and deassigns the minor
+ *     number. Future open calls will be met with errors.
+ */
+
+void video_unregister_device(struct video_device *vfd)
+{
+       mutex_lock(&videodev_lock);
+       if (video_device[vfd->minor] != vfd)
+               panic("videodev: bad unregister");
+
+       video_device[vfd->minor] = NULL;
+       device_unregister(&vfd->class_dev);
+       mutex_unlock(&videodev_lock);
+}
+EXPORT_SYMBOL(video_unregister_device);
+
+/*
+ * Video fs operations
+ */
+static const struct file_operations video_fops = {
+       .owner          = THIS_MODULE,
+       .llseek         = no_llseek,
+       .open           = video_open,
+};
+
+/*
+ *     Initialise video for linux
+ */
+
+static int __init videodev_init(void)
+{
+       int ret;
+
+       printk(KERN_INFO "Linux video capture interface: v2.00\n");
+       if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
+               printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
+               return -EIO;
+       }
+
+       ret = class_register(&video_class);
+       if (ret < 0) {
+               unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
+               printk(KERN_WARNING "video_dev: class_register failed\n");
+               return -EIO;
+       }
+
+       return 0;
+}
+
+static void __exit videodev_exit(void)
+{
+       class_unregister(&video_class);
+       unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
+}
+
+module_init(videodev_init)
+module_exit(videodev_exit)
+
+MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
+MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
index 6616e65..e69de29 100644 (file)
-/*
- * Video capture interface for Linux version 2
- *
- *     A generic video device interface for the LINUX operating system
- *     using a set of device structures/vectors for low level operations.
- *
- *     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.
- *
- * Authors:    Alan Cox, <alan@redhat.com> (version 1)
- *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
- *
- * Fixes:      20000516  Claudio Matsuoka <claudio@conectiva.com>
- *             - Added procfs support
- */
-
-#define dbgarg(cmd, fmt, arg...) \
-               do {                                                    \
-                   if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {            \
-                       printk(KERN_DEBUG "%s: ",  vfd->name);          \
-                       v4l_printk_ioctl(cmd);                          \
-                       printk(" " fmt,  ## arg);                       \
-                   }                                                   \
-               } while (0)
-
-#define dbgarg2(fmt, arg...) \
-               do {                                                    \
-                   if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)              \
-                       printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\
-               } while (0)
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/kmod.h>
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#define __OLD_VIDIOC_ /* To allow fixing old calls*/
-#include <linux/videodev2.h>
-
-#ifdef CONFIG_VIDEO_V4L1
-#include <linux/videodev.h>
-#endif
-#include <media/v4l2-common.h>
-#include <linux/video_decoder.h>
-
-#define VIDEO_NUM_DEVICES      256
-#define VIDEO_NAME              "video4linux"
-
-struct std_descr {
-       v4l2_std_id std;
-       const char *descr;
-};
-
-static const struct std_descr standards[] = {
-       { V4L2_STD_NTSC,        "NTSC"      },
-       { V4L2_STD_NTSC_M,      "NTSC-M"    },
-       { V4L2_STD_NTSC_M_JP,   "NTSC-M-JP" },
-       { V4L2_STD_NTSC_M_KR,   "NTSC-M-KR" },
-       { V4L2_STD_NTSC_443,    "NTSC-443"  },
-       { V4L2_STD_PAL,         "PAL"       },
-       { V4L2_STD_PAL_BG,      "PAL-BG"    },
-       { V4L2_STD_PAL_B,       "PAL-B"     },
-       { V4L2_STD_PAL_B1,      "PAL-B1"    },
-       { V4L2_STD_PAL_G,       "PAL-G"     },
-       { V4L2_STD_PAL_H,       "PAL-H"     },
-       { V4L2_STD_PAL_I,       "PAL-I"     },
-       { V4L2_STD_PAL_DK,      "PAL-DK"    },
-       { V4L2_STD_PAL_D,       "PAL-D"     },
-       { V4L2_STD_PAL_D1,      "PAL-D1"    },
-       { V4L2_STD_PAL_K,       "PAL-K"     },
-       { V4L2_STD_PAL_M,       "PAL-M"     },
-       { V4L2_STD_PAL_N,       "PAL-N"     },
-       { V4L2_STD_PAL_Nc,      "PAL-Nc"    },
-       { V4L2_STD_PAL_60,      "PAL-60"    },
-       { V4L2_STD_SECAM,       "SECAM"     },
-       { V4L2_STD_SECAM_B,     "SECAM-B"   },
-       { V4L2_STD_SECAM_G,     "SECAM-G"   },
-       { V4L2_STD_SECAM_H,     "SECAM-H"   },
-       { V4L2_STD_SECAM_DK,    "SECAM-DK"  },
-       { V4L2_STD_SECAM_D,     "SECAM-D"   },
-       { V4L2_STD_SECAM_K,     "SECAM-K"   },
-       { V4L2_STD_SECAM_K1,    "SECAM-K1"  },
-       { V4L2_STD_SECAM_L,     "SECAM-L"   },
-       { V4L2_STD_SECAM_LC,    "SECAM-Lc"  },
-       { 0,                    "Unknown"   }
-};
-
-/* video4linux standard ID conversion to standard name
- */
-const char *v4l2_norm_to_name(v4l2_std_id id)
-{
-       u32 myid = id;
-       int i;
-
-       /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
-          64 bit comparations. So, on that architecture, with some gcc
-          variants, compilation fails. Currently, the max value is 30bit wide.
-        */
-       BUG_ON(myid != id);
-
-       for (i = 0; standards[i].std; i++)
-               if (myid == standards[i].std)
-                       break;
-       return standards[i].descr;
-}
-EXPORT_SYMBOL(v4l2_norm_to_name);
-
-/* Fill in the fields of a v4l2_standard structure according to the
-   'id' and 'transmission' parameters.  Returns negative on error.  */
-int v4l2_video_std_construct(struct v4l2_standard *vs,
-                            int id, const char *name)
-{
-       u32 index = vs->index;
-
-       memset(vs, 0, sizeof(struct v4l2_standard));
-       vs->index = index;
-       vs->id    = id;
-       if (id & V4L2_STD_525_60) {
-               vs->frameperiod.numerator = 1001;
-               vs->frameperiod.denominator = 30000;
-               vs->framelines = 525;
-       } else {
-               vs->frameperiod.numerator = 1;
-               vs->frameperiod.denominator = 25;
-               vs->framelines = 625;
-       }
-       strlcpy(vs->name, name, sizeof(vs->name));
-       return 0;
-}
-EXPORT_SYMBOL(v4l2_video_std_construct);
-
-/* ----------------------------------------------------------------- */
-/* some arrays for pretty-printing debug messages of enum types      */
-
-const char *v4l2_field_names[] = {
-       [V4L2_FIELD_ANY]        = "any",
-       [V4L2_FIELD_NONE]       = "none",
-       [V4L2_FIELD_TOP]        = "top",
-       [V4L2_FIELD_BOTTOM]     = "bottom",
-       [V4L2_FIELD_INTERLACED] = "interlaced",
-       [V4L2_FIELD_SEQ_TB]     = "seq-tb",
-       [V4L2_FIELD_SEQ_BT]     = "seq-bt",
-       [V4L2_FIELD_ALTERNATE]  = "alternate",
-       [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
-       [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
-};
-EXPORT_SYMBOL(v4l2_field_names);
-
-const char *v4l2_type_names[] = {
-       [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "vid-cap",
-       [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "vid-overlay",
-       [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "vid-out",
-       [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
-       [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
-       [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
-       [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
-       [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
-};
-EXPORT_SYMBOL(v4l2_type_names);
-
-static const char *v4l2_memory_names[] = {
-       [V4L2_MEMORY_MMAP]    = "mmap",
-       [V4L2_MEMORY_USERPTR] = "userptr",
-       [V4L2_MEMORY_OVERLAY] = "overlay",
-};
-
-#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
-                          arr[a] : "unknown")
-
-/* ------------------------------------------------------------------ */
-/* debug help functions                                               */
-
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-static const char *v4l1_ioctls[] = {
-       [_IOC_NR(VIDIOCGCAP)]       = "VIDIOCGCAP",
-       [_IOC_NR(VIDIOCGCHAN)]      = "VIDIOCGCHAN",
-       [_IOC_NR(VIDIOCSCHAN)]      = "VIDIOCSCHAN",
-       [_IOC_NR(VIDIOCGTUNER)]     = "VIDIOCGTUNER",
-       [_IOC_NR(VIDIOCSTUNER)]     = "VIDIOCSTUNER",
-       [_IOC_NR(VIDIOCGPICT)]      = "VIDIOCGPICT",
-       [_IOC_NR(VIDIOCSPICT)]      = "VIDIOCSPICT",
-       [_IOC_NR(VIDIOCCAPTURE)]    = "VIDIOCCAPTURE",
-       [_IOC_NR(VIDIOCGWIN)]       = "VIDIOCGWIN",
-       [_IOC_NR(VIDIOCSWIN)]       = "VIDIOCSWIN",
-       [_IOC_NR(VIDIOCGFBUF)]      = "VIDIOCGFBUF",
-       [_IOC_NR(VIDIOCSFBUF)]      = "VIDIOCSFBUF",
-       [_IOC_NR(VIDIOCKEY)]        = "VIDIOCKEY",
-       [_IOC_NR(VIDIOCGFREQ)]      = "VIDIOCGFREQ",
-       [_IOC_NR(VIDIOCSFREQ)]      = "VIDIOCSFREQ",
-       [_IOC_NR(VIDIOCGAUDIO)]     = "VIDIOCGAUDIO",
-       [_IOC_NR(VIDIOCSAUDIO)]     = "VIDIOCSAUDIO",
-       [_IOC_NR(VIDIOCSYNC)]       = "VIDIOCSYNC",
-       [_IOC_NR(VIDIOCMCAPTURE)]   = "VIDIOCMCAPTURE",
-       [_IOC_NR(VIDIOCGMBUF)]      = "VIDIOCGMBUF",
-       [_IOC_NR(VIDIOCGUNIT)]      = "VIDIOCGUNIT",
-       [_IOC_NR(VIDIOCGCAPTURE)]   = "VIDIOCGCAPTURE",
-       [_IOC_NR(VIDIOCSCAPTURE)]   = "VIDIOCSCAPTURE",
-       [_IOC_NR(VIDIOCSPLAYMODE)]  = "VIDIOCSPLAYMODE",
-       [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
-       [_IOC_NR(VIDIOCGPLAYINFO)]  = "VIDIOCGPLAYINFO",
-       [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
-       [_IOC_NR(VIDIOCGVBIFMT)]    = "VIDIOCGVBIFMT",
-       [_IOC_NR(VIDIOCSVBIFMT)]    = "VIDIOCSVBIFMT"
-};
-#define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
-#endif
-
-static const char *v4l2_ioctls[] = {
-       [_IOC_NR(VIDIOC_QUERYCAP)]         = "VIDIOC_QUERYCAP",
-       [_IOC_NR(VIDIOC_RESERVED)]         = "VIDIOC_RESERVED",
-       [_IOC_NR(VIDIOC_ENUM_FMT)]         = "VIDIOC_ENUM_FMT",
-       [_IOC_NR(VIDIOC_G_FMT)]            = "VIDIOC_G_FMT",
-       [_IOC_NR(VIDIOC_S_FMT)]            = "VIDIOC_S_FMT",
-       [_IOC_NR(VIDIOC_REQBUFS)]          = "VIDIOC_REQBUFS",
-       [_IOC_NR(VIDIOC_QUERYBUF)]         = "VIDIOC_QUERYBUF",
-       [_IOC_NR(VIDIOC_G_FBUF)]           = "VIDIOC_G_FBUF",
-       [_IOC_NR(VIDIOC_S_FBUF)]           = "VIDIOC_S_FBUF",
-       [_IOC_NR(VIDIOC_OVERLAY)]          = "VIDIOC_OVERLAY",
-       [_IOC_NR(VIDIOC_QBUF)]             = "VIDIOC_QBUF",
-       [_IOC_NR(VIDIOC_DQBUF)]            = "VIDIOC_DQBUF",
-       [_IOC_NR(VIDIOC_STREAMON)]         = "VIDIOC_STREAMON",
-       [_IOC_NR(VIDIOC_STREAMOFF)]        = "VIDIOC_STREAMOFF",
-       [_IOC_NR(VIDIOC_G_PARM)]           = "VIDIOC_G_PARM",
-       [_IOC_NR(VIDIOC_S_PARM)]           = "VIDIOC_S_PARM",
-       [_IOC_NR(VIDIOC_G_STD)]            = "VIDIOC_G_STD",
-       [_IOC_NR(VIDIOC_S_STD)]            = "VIDIOC_S_STD",
-       [_IOC_NR(VIDIOC_ENUMSTD)]          = "VIDIOC_ENUMSTD",
-       [_IOC_NR(VIDIOC_ENUMINPUT)]        = "VIDIOC_ENUMINPUT",
-       [_IOC_NR(VIDIOC_G_CTRL)]           = "VIDIOC_G_CTRL",
-       [_IOC_NR(VIDIOC_S_CTRL)]           = "VIDIOC_S_CTRL",
-       [_IOC_NR(VIDIOC_G_TUNER)]          = "VIDIOC_G_TUNER",
-       [_IOC_NR(VIDIOC_S_TUNER)]          = "VIDIOC_S_TUNER",
-       [_IOC_NR(VIDIOC_G_AUDIO)]          = "VIDIOC_G_AUDIO",
-       [_IOC_NR(VIDIOC_S_AUDIO)]          = "VIDIOC_S_AUDIO",
-       [_IOC_NR(VIDIOC_QUERYCTRL)]        = "VIDIOC_QUERYCTRL",
-       [_IOC_NR(VIDIOC_QUERYMENU)]        = "VIDIOC_QUERYMENU",
-       [_IOC_NR(VIDIOC_G_INPUT)]          = "VIDIOC_G_INPUT",
-       [_IOC_NR(VIDIOC_S_INPUT)]          = "VIDIOC_S_INPUT",
-       [_IOC_NR(VIDIOC_G_OUTPUT)]         = "VIDIOC_G_OUTPUT",
-       [_IOC_NR(VIDIOC_S_OUTPUT)]         = "VIDIOC_S_OUTPUT",
-       [_IOC_NR(VIDIOC_ENUMOUTPUT)]       = "VIDIOC_ENUMOUTPUT",
-       [_IOC_NR(VIDIOC_G_AUDOUT)]         = "VIDIOC_G_AUDOUT",
-       [_IOC_NR(VIDIOC_S_AUDOUT)]         = "VIDIOC_S_AUDOUT",
-       [_IOC_NR(VIDIOC_G_MODULATOR)]      = "VIDIOC_G_MODULATOR",
-       [_IOC_NR(VIDIOC_S_MODULATOR)]      = "VIDIOC_S_MODULATOR",
-       [_IOC_NR(VIDIOC_G_FREQUENCY)]      = "VIDIOC_G_FREQUENCY",
-       [_IOC_NR(VIDIOC_S_FREQUENCY)]      = "VIDIOC_S_FREQUENCY",
-       [_IOC_NR(VIDIOC_CROPCAP)]          = "VIDIOC_CROPCAP",
-       [_IOC_NR(VIDIOC_G_CROP)]           = "VIDIOC_G_CROP",
-       [_IOC_NR(VIDIOC_S_CROP)]           = "VIDIOC_S_CROP",
-       [_IOC_NR(VIDIOC_G_JPEGCOMP)]       = "VIDIOC_G_JPEGCOMP",
-       [_IOC_NR(VIDIOC_S_JPEGCOMP)]       = "VIDIOC_S_JPEGCOMP",
-       [_IOC_NR(VIDIOC_QUERYSTD)]         = "VIDIOC_QUERYSTD",
-       [_IOC_NR(VIDIOC_TRY_FMT)]          = "VIDIOC_TRY_FMT",
-       [_IOC_NR(VIDIOC_ENUMAUDIO)]        = "VIDIOC_ENUMAUDIO",
-       [_IOC_NR(VIDIOC_ENUMAUDOUT)]       = "VIDIOC_ENUMAUDOUT",
-       [_IOC_NR(VIDIOC_G_PRIORITY)]       = "VIDIOC_G_PRIORITY",
-       [_IOC_NR(VIDIOC_S_PRIORITY)]       = "VIDIOC_S_PRIORITY",
-       [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
-       [_IOC_NR(VIDIOC_LOG_STATUS)]       = "VIDIOC_LOG_STATUS",
-       [_IOC_NR(VIDIOC_G_EXT_CTRLS)]      = "VIDIOC_G_EXT_CTRLS",
-       [_IOC_NR(VIDIOC_S_EXT_CTRLS)]      = "VIDIOC_S_EXT_CTRLS",
-       [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)]    = "VIDIOC_TRY_EXT_CTRLS",
-#if 1
-       [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)]  = "VIDIOC_ENUM_FRAMESIZES",
-       [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS",
-       [_IOC_NR(VIDIOC_G_ENC_INDEX)]      = "VIDIOC_G_ENC_INDEX",
-       [_IOC_NR(VIDIOC_ENCODER_CMD)]      = "VIDIOC_ENCODER_CMD",
-       [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)]  = "VIDIOC_TRY_ENCODER_CMD",
-
-       [_IOC_NR(VIDIOC_DBG_S_REGISTER)]   = "VIDIOC_DBG_S_REGISTER",
-       [_IOC_NR(VIDIOC_DBG_G_REGISTER)]   = "VIDIOC_DBG_G_REGISTER",
-
-       [_IOC_NR(VIDIOC_G_CHIP_IDENT)]     = "VIDIOC_G_CHIP_IDENT",
-       [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)]   = "VIDIOC_S_HW_FREQ_SEEK",
-#endif
-};
-#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
-
-static const char *v4l2_int_ioctls[] = {
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-       [_IOC_NR(DECODER_GET_CAPABILITIES)]    = "DECODER_GET_CAPABILITIES",
-       [_IOC_NR(DECODER_GET_STATUS)]          = "DECODER_GET_STATUS",
-       [_IOC_NR(DECODER_SET_NORM)]            = "DECODER_SET_NORM",
-       [_IOC_NR(DECODER_SET_INPUT)]           = "DECODER_SET_INPUT",
-       [_IOC_NR(DECODER_SET_OUTPUT)]          = "DECODER_SET_OUTPUT",
-       [_IOC_NR(DECODER_ENABLE_OUTPUT)]       = "DECODER_ENABLE_OUTPUT",
-       [_IOC_NR(DECODER_SET_PICTURE)]         = "DECODER_SET_PICTURE",
-       [_IOC_NR(DECODER_SET_GPIO)]            = "DECODER_SET_GPIO",
-       [_IOC_NR(DECODER_INIT)]                = "DECODER_INIT",
-       [_IOC_NR(DECODER_SET_VBI_BYPASS)]      = "DECODER_SET_VBI_BYPASS",
-       [_IOC_NR(DECODER_DUMP)]                = "DECODER_DUMP",
-#endif
-       [_IOC_NR(AUDC_SET_RADIO)]              = "AUDC_SET_RADIO",
-
-       [_IOC_NR(TUNER_SET_TYPE_ADDR)]         = "TUNER_SET_TYPE_ADDR",
-       [_IOC_NR(TUNER_SET_STANDBY)]           = "TUNER_SET_STANDBY",
-       [_IOC_NR(TUNER_SET_CONFIG)]            = "TUNER_SET_CONFIG",
-
-       [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)]     = "VIDIOC_INT_S_TUNER_MODE",
-       [_IOC_NR(VIDIOC_INT_RESET)]            = "VIDIOC_INT_RESET",
-       [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
-       [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)]  = "VIDIOC_INT_DECODE_VBI_LINE",
-       [_IOC_NR(VIDIOC_INT_S_VBI_DATA)]       = "VIDIOC_INT_S_VBI_DATA",
-       [_IOC_NR(VIDIOC_INT_G_VBI_DATA)]       = "VIDIOC_INT_G_VBI_DATA",
-       [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)]   = "VIDIOC_INT_I2S_CLOCK_FREQ",
-       [_IOC_NR(VIDIOC_INT_S_STANDBY)]        = "VIDIOC_INT_S_STANDBY",
-       [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)]  = "VIDIOC_INT_S_AUDIO_ROUTING",
-       [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)]  = "VIDIOC_INT_G_AUDIO_ROUTING",
-       [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)]  = "VIDIOC_INT_S_VIDEO_ROUTING",
-       [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)]  = "VIDIOC_INT_G_VIDEO_ROUTING",
-       [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)]   = "VIDIOC_INT_S_CRYSTAL_FREQ",
-       [_IOC_NR(VIDIOC_INT_INIT)]             = "VIDIOC_INT_INIT",
-       [_IOC_NR(VIDIOC_INT_G_STD_OUTPUT)]     = "VIDIOC_INT_G_STD_OUTPUT",
-       [_IOC_NR(VIDIOC_INT_S_STD_OUTPUT)]     = "VIDIOC_INT_S_STD_OUTPUT",
-};
-#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
-
-/* Common ioctl debug function. This function can be used by
-   external ioctl messages as well as internal V4L ioctl */
-void v4l_printk_ioctl(unsigned int cmd)
-{
-       char *dir, *type;
-
-       switch (_IOC_TYPE(cmd)) {
-       case 'd':
-               if (_IOC_NR(cmd) >= V4L2_INT_IOCTLS) {
-                       type = "v4l2_int";
-                       break;
-               }
-               printk("%s", v4l2_int_ioctls[_IOC_NR(cmd)]);
-               return;
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-       case 'v':
-               if (_IOC_NR(cmd) >= V4L1_IOCTLS) {
-                       type = "v4l1";
-                       break;
-               }
-               printk("%s", v4l1_ioctls[_IOC_NR(cmd)]);
-               return;
-#endif
-       case 'V':
-               if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
-                       type = "v4l2";
-                       break;
-               }
-               printk("%s", v4l2_ioctls[_IOC_NR(cmd)]);
-               return;
-       default:
-               type = "unknown";
-       }
-
-       switch (_IOC_DIR(cmd)) {
-       case _IOC_NONE:              dir = "--"; break;
-       case _IOC_READ:              dir = "r-"; break;
-       case _IOC_WRITE:             dir = "-w"; break;
-       case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
-       default:                     dir = "*ERR*"; break;
-       }
-       printk("%s ioctl '%c', dir=%s, #%d (0x%08x)",
-               type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
-}
-EXPORT_SYMBOL(v4l_printk_ioctl);
-
-/*
- *     sysfs stuff
- */
-
-static ssize_t show_index(struct device *cd,
-                        struct device_attribute *attr, char *buf)
-{
-       struct video_device *vfd = container_of(cd, struct video_device,
-                                               class_dev);
-       return sprintf(buf, "%i\n", vfd->index);
-}
-
-static ssize_t show_name(struct device *cd,
-                        struct device_attribute *attr, char *buf)
-{
-       struct video_device *vfd = container_of(cd, struct video_device,
-                                               class_dev);
-       return sprintf(buf, "%.*s\n", (int)sizeof(vfd->name), vfd->name);
-}
-
-static struct device_attribute video_device_attrs[] = {
-       __ATTR(name, S_IRUGO, show_name, NULL),
-       __ATTR(index, S_IRUGO, show_index, NULL),
-       __ATTR_NULL
-};
-
-struct video_device *video_device_alloc(void)
-{
-       struct video_device *vfd;
-
-       vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
-       return vfd;
-}
-EXPORT_SYMBOL(video_device_alloc);
-
-void video_device_release(struct video_device *vfd)
-{
-       kfree(vfd);
-}
-EXPORT_SYMBOL(video_device_release);
-
-static void video_release(struct device *cd)
-{
-       struct video_device *vfd = container_of(cd, struct video_device,
-                                                               class_dev);
-
-#if 1
-       /* needed until all drivers are fixed */
-       if (!vfd->release)
-               return;
-#endif
-       vfd->release(vfd);
-}
-
-static struct class video_class = {
-       .name    = VIDEO_NAME,
-       .dev_attrs = video_device_attrs,
-       .dev_release = video_release,
-};
-
-/*
- *     Active devices
- */
-
-static struct video_device *video_device[VIDEO_NUM_DEVICES];
-static DEFINE_MUTEX(videodev_lock);
-
-struct video_device* video_devdata(struct file *file)
-{
-       return video_device[iminor(file->f_path.dentry->d_inode)];
-}
-EXPORT_SYMBOL(video_devdata);
-
-/*
- *     Open a video device - FIXME: Obsoleted
- */
-static int video_open(struct inode *inode, struct file *file)
-{
-       unsigned int minor = iminor(inode);
-       int err = 0;
-       struct video_device *vfl;
-       const struct file_operations *old_fops;
-
-       if(minor>=VIDEO_NUM_DEVICES)
-               return -ENODEV;
-       lock_kernel();
-       mutex_lock(&videodev_lock);
-       vfl=video_device[minor];
-       if(vfl==NULL) {
-               mutex_unlock(&videodev_lock);
-               request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
-               mutex_lock(&videodev_lock);
-               vfl=video_device[minor];
-               if (vfl==NULL) {
-                       mutex_unlock(&videodev_lock);
-                       unlock_kernel();
-                       return -ENODEV;
-               }
-       }
-       old_fops = file->f_op;
-       file->f_op = fops_get(vfl->fops);
-       if(file->f_op->open)
-               err = file->f_op->open(inode,file);
-       if (err) {
-               fops_put(file->f_op);
-               file->f_op = fops_get(old_fops);
-       }
-       fops_put(old_fops);
-       mutex_unlock(&videodev_lock);
-       unlock_kernel();
-       return err;
-}
-
-/*
- * helper function -- handles userspace copying for ioctl arguments
- */
-
-#ifdef __OLD_VIDIOC_
-static unsigned int
-video_fix_command(unsigned int cmd)
-{
-       switch (cmd) {
-       case VIDIOC_OVERLAY_OLD:
-               cmd = VIDIOC_OVERLAY;
-               break;
-       case VIDIOC_S_PARM_OLD:
-               cmd = VIDIOC_S_PARM;
-               break;
-       case VIDIOC_S_CTRL_OLD:
-               cmd = VIDIOC_S_CTRL;
-               break;
-       case VIDIOC_G_AUDIO_OLD:
-               cmd = VIDIOC_G_AUDIO;
-               break;
-       case VIDIOC_G_AUDOUT_OLD:
-               cmd = VIDIOC_G_AUDOUT;
-               break;
-       case VIDIOC_CROPCAP_OLD:
-               cmd = VIDIOC_CROPCAP;
-               break;
-       }
-       return cmd;
-}
-#endif
-
-/*
- * Obsolete usercopy function - Should be removed soon
- */
-int
-video_usercopy(struct inode *inode, struct file *file,
-              unsigned int cmd, unsigned long arg,
-              int (*func)(struct inode *inode, struct file *file,
-                          unsigned int cmd, void *arg))
-{
-       char    sbuf[128];
-       void    *mbuf = NULL;
-       void    *parg = NULL;
-       int     err  = -EINVAL;
-       int     is_ext_ctrl;
-       size_t  ctrls_size = 0;
-       void __user *user_ptr = NULL;
-
-#ifdef __OLD_VIDIOC_
-       cmd = video_fix_command(cmd);
-#endif
-       is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
-                      cmd == VIDIOC_TRY_EXT_CTRLS);
-
-       /*  Copy arguments into temp kernel buffer  */
-       switch (_IOC_DIR(cmd)) {
-       case _IOC_NONE:
-               parg = NULL;
-               break;
-       case _IOC_READ:
-       case _IOC_WRITE:
-       case (_IOC_WRITE | _IOC_READ):
-               if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
-                       parg = sbuf;
-               } else {
-                       /* too big to allocate from stack */
-                       mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
-                       if (NULL == mbuf)
-                               return -ENOMEM;
-                       parg = mbuf;
-               }
-
-               err = -EFAULT;
-               if (_IOC_DIR(cmd) & _IOC_WRITE)
-                       if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
-                               goto out;
-               break;
-       }
-       if (is_ext_ctrl) {
-               struct v4l2_ext_controls *p = parg;
-
-               /* In case of an error, tell the caller that it wasn't
-                  a specific control that caused it. */
-               p->error_idx = p->count;
-               user_ptr = (void __user *)p->controls;
-               if (p->count) {
-                       ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
-                       /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
-                       mbuf = kmalloc(ctrls_size, GFP_KERNEL);
-                       err = -ENOMEM;
-                       if (NULL == mbuf)
-                               goto out_ext_ctrl;
-                       err = -EFAULT;
-                       if (copy_from_user(mbuf, user_ptr, ctrls_size))
-                               goto out_ext_ctrl;
-                       p->controls = mbuf;
-               }
-       }
-
-       /* call driver */
-       err = func(inode, file, cmd, parg);
-       if (err == -ENOIOCTLCMD)
-               err = -EINVAL;
-       if (is_ext_ctrl) {
-               struct v4l2_ext_controls *p = parg;
-
-               p->controls = (void *)user_ptr;
-               if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
-                       err = -EFAULT;
-               goto out_ext_ctrl;
-       }
-       if (err < 0)
-               goto out;
-
-out_ext_ctrl:
-       /*  Copy results into user buffer  */
-       switch (_IOC_DIR(cmd))
-       {
-       case _IOC_READ:
-       case (_IOC_WRITE | _IOC_READ):
-               if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
-                       err = -EFAULT;
-               break;
-       }
-
-out:
-       kfree(mbuf);
-       return err;
-}
-EXPORT_SYMBOL(video_usercopy);
-
-/*
- * open/release helper functions -- handle exclusive opens
- * Should be removed soon
- */
-int video_exclusive_open(struct inode *inode, struct file *file)
-{
-       struct  video_device *vfl = video_devdata(file);
-       int retval = 0;
-
-       mutex_lock(&vfl->lock);
-       if (vfl->users) {
-               retval = -EBUSY;
-       } else {
-               vfl->users++;
-       }
-       mutex_unlock(&vfl->lock);
-       return retval;
-}
-EXPORT_SYMBOL(video_exclusive_open);
-
-int video_exclusive_release(struct inode *inode, struct file *file)
-{
-       struct  video_device *vfl = video_devdata(file);
-
-       vfl->users--;
-       return 0;
-}
-EXPORT_SYMBOL(video_exclusive_release);
-
-static void dbgbuf(unsigned int cmd, struct video_device *vfd,
-                                       struct v4l2_buffer *p)
-{
-       struct v4l2_timecode *tc=&p->timecode;
-
-       dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
-               "bytesused=%d, flags=0x%08d, "
-               "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n",
-                       (p->timestamp.tv_sec/3600),
-                       (int)(p->timestamp.tv_sec/60)%60,
-                       (int)(p->timestamp.tv_sec%60),
-                       p->timestamp.tv_usec,
-                       p->index,
-                       prt_names(p->type, v4l2_type_names),
-                       p->bytesused, p->flags,
-                       p->field, p->sequence,
-                       prt_names(p->memory, v4l2_memory_names),
-                       p->m.userptr, p->length);
-       dbgarg2("timecode=%02d:%02d:%02d type=%d, "
-               "flags=0x%08d, frames=%d, userbits=0x%08x\n",
-                       tc->hours,tc->minutes,tc->seconds,
-                       tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
-}
-
-static inline void dbgrect(struct video_device *vfd, char *s,
-                                                       struct v4l2_rect *r)
-{
-       dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top,
-                                               r->width, r->height);
-};
-
-static inline void v4l_print_pix_fmt (struct video_device *vfd,
-                                               struct v4l2_pix_format *fmt)
-{
-       dbgarg2 ("width=%d, height=%d, format=%c%c%c%c, field=%s, "
-               "bytesperline=%d sizeimage=%d, colorspace=%d\n",
-               fmt->width,fmt->height,
-               (fmt->pixelformat & 0xff),
-               (fmt->pixelformat >>  8) & 0xff,
-               (fmt->pixelformat >> 16) & 0xff,
-               (fmt->pixelformat >> 24) & 0xff,
-               prt_names(fmt->field, v4l2_field_names),
-               fmt->bytesperline, fmt->sizeimage, fmt->colorspace);
-};
-
-static inline void v4l_print_ext_ctrls(unsigned int cmd,
-       struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals)
-{
-       __u32 i;
-
-       if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG))
-               return;
-       dbgarg(cmd, "");
-       printk(KERN_CONT "class=0x%x", c->ctrl_class);
-       for (i = 0; i < c->count; i++) {
-               if (show_vals)
-                       printk(KERN_CONT " id/val=0x%x/0x%x",
-                               c->controls[i].id, c->controls[i].value);
-               else
-                       printk(KERN_CONT " id=0x%x", c->controls[i].id);
-       }
-       printk(KERN_CONT "\n");
-};
-
-static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
-{
-       __u32 i;
-
-       /* zero the reserved fields */
-       c->reserved[0] = c->reserved[1] = 0;
-       for (i = 0; i < c->count; i++) {
-               c->controls[i].reserved2[0] = 0;
-               c->controls[i].reserved2[1] = 0;
-       }
-       /* V4L2_CID_PRIVATE_BASE cannot be used as control class
-          when using extended controls.
-          Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
-          is it allowed for backwards compatibility.
-        */
-       if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
-               return 0;
-       /* Check that all controls are from the same control class. */
-       for (i = 0; i < c->count; i++) {
-               if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
-                       c->error_idx = i;
-                       return 0;
-               }
-       }
-       return 1;
-}
-
-static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
-{
-       switch (type) {
-       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               if (vfd->vidioc_try_fmt_vid_cap)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-               if (vfd->vidioc_try_fmt_vid_overlay)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-               if (vfd->vidioc_try_fmt_vid_out)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-               if (vfd->vidioc_try_fmt_vid_out_overlay)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_VBI_CAPTURE:
-               if (vfd->vidioc_try_fmt_vbi_cap)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_VBI_OUTPUT:
-               if (vfd->vidioc_try_fmt_vbi_out)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-               if (vfd->vidioc_try_fmt_sliced_vbi_cap)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-               if (vfd->vidioc_try_fmt_sliced_vbi_out)
-                       return (0);
-               break;
-       case V4L2_BUF_TYPE_PRIVATE:
-               if (vfd->vidioc_try_fmt_type_private)
-                       return (0);
-               break;
-       }
-       return (-EINVAL);
-}
-
-static int __video_do_ioctl(struct inode *inode, struct file *file,
-               unsigned int cmd, void *arg)
-{
-       struct video_device *vfd = video_devdata(file);
-       void                 *fh = file->private_data;
-       int                  ret = -EINVAL;
-
-       if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
-                               !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
-               v4l_print_ioctl(vfd->name, cmd);
-               printk("\n");
-       }
-
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-       /***********************************************************
-        Handles calls to the obsoleted V4L1 API
-        Due to the nature of VIDIOCGMBUF, each driver that supports
-        V4L1 should implement its own handler for this ioctl.
-        ***********************************************************/
-
-       /* --- streaming capture ------------------------------------- */
-       if (cmd == VIDIOCGMBUF) {
-               struct video_mbuf *p=arg;
-
-               memset(p, 0, sizeof(*p));
-
-               if (!vfd->vidiocgmbuf)
-                       return ret;
-               ret=vfd->vidiocgmbuf(file, fh, p);
-               if (!ret)
-                       dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
-                                               p->size, p->frames,
-                                               (unsigned long)p->offsets);
-               return ret;
-       }
-
-       /********************************************************
-        All other V4L1 calls are handled by v4l1_compat module.
-        Those calls will be translated into V4L2 calls, and
-        __video_do_ioctl will be called again, with one or more
-        V4L2 ioctls.
-        ********************************************************/
-       if (_IOC_TYPE(cmd)=='v')
-               return v4l_compat_translate_ioctl(inode,file,cmd,arg,
-                                               __video_do_ioctl);
-#endif
-
-       switch(cmd) {
-       /* --- capabilities ------------------------------------------ */
-       case VIDIOC_QUERYCAP:
-       {
-               struct v4l2_capability *cap = (struct v4l2_capability*)arg;
-               memset(cap, 0, sizeof(*cap));
-
-               if (!vfd->vidioc_querycap)
-                       break;
-
-               ret=vfd->vidioc_querycap(file, fh, cap);
-               if (!ret)
-                       dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
-                                       "version=0x%08x, "
-                                       "capabilities=0x%08x\n",
-                                       cap->driver,cap->card,cap->bus_info,
-                                       cap->version,
-                                       cap->capabilities);
-               break;
-       }
-
-       /* --- priority ------------------------------------------ */
-       case VIDIOC_G_PRIORITY:
-       {
-               enum v4l2_priority *p=arg;
-
-               if (!vfd->vidioc_g_priority)
-                       break;
-               ret=vfd->vidioc_g_priority(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "priority is %d\n", *p);
-               break;
-       }
-       case VIDIOC_S_PRIORITY:
-       {
-               enum v4l2_priority *p=arg;
-
-               if (!vfd->vidioc_s_priority)
-                       break;
-               dbgarg(cmd, "setting priority to %d\n", *p);
-               ret=vfd->vidioc_s_priority(file, fh, *p);
-               break;
-       }
-
-       /* --- capture ioctls ---------------------------------------- */
-       case VIDIOC_ENUM_FMT:
-       {
-               struct v4l2_fmtdesc *f = arg;
-               enum v4l2_buf_type type;
-               unsigned int index;
-
-               index = f->index;
-               type  = f->type;
-               memset(f,0,sizeof(*f));
-               f->index = index;
-               f->type  = type;
-
-               switch (type) {
-               case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-                       if (vfd->vidioc_enum_fmt_vid_cap)
-                               ret = vfd->vidioc_enum_fmt_vid_cap(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-                       if (vfd->vidioc_enum_fmt_vid_overlay)
-                               ret = vfd->vidioc_enum_fmt_vid_overlay(file,
-                                       fh, f);
-                       break;
-#if 1
-               /* V4L2_BUF_TYPE_VBI_CAPTURE should not support VIDIOC_ENUM_FMT
-                * according to the spec. The bttv and saa7134 drivers support
-                * it though, so just warn that this is deprecated and will be
-                * removed in the near future. */
-               case V4L2_BUF_TYPE_VBI_CAPTURE:
-                       if (vfd->vidioc_enum_fmt_vbi_cap) {
-                               printk(KERN_WARNING "vidioc_enum_fmt_vbi_cap will be removed in 2.6.28!\n");
-                               ret = vfd->vidioc_enum_fmt_vbi_cap(file, fh, f);
-                       }
-                       break;
-#endif
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-                       if (vfd->vidioc_enum_fmt_vid_out)
-                               ret = vfd->vidioc_enum_fmt_vid_out(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_PRIVATE:
-                       if (vfd->vidioc_enum_fmt_type_private)
-                               ret = vfd->vidioc_enum_fmt_type_private(file,
-                                                               fh, f);
-                       break;
-               default:
-                       break;
-               }
-               if (!ret)
-                       dbgarg (cmd, "index=%d, type=%d, flags=%d, "
-                                       "pixelformat=%c%c%c%c, description='%s'\n",
-                                       f->index, f->type, f->flags,
-                                       (f->pixelformat & 0xff),
-                                       (f->pixelformat >>  8) & 0xff,
-                                       (f->pixelformat >> 16) & 0xff,
-                                       (f->pixelformat >> 24) & 0xff,
-                                       f->description);
-               break;
-       }
-       case VIDIOC_G_FMT:
-       {
-               struct v4l2_format *f = (struct v4l2_format *)arg;
-
-               memset(f->fmt.raw_data, 0, sizeof(f->fmt.raw_data));
-
-               /* FIXME: Should be one dump per type */
-               dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
-
-               switch (f->type) {
-               case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-                       if (vfd->vidioc_g_fmt_vid_cap)
-                               ret = vfd->vidioc_g_fmt_vid_cap(file, fh, f);
-                       if (!ret)
-                               v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-                       if (vfd->vidioc_g_fmt_vid_overlay)
-                               ret = vfd->vidioc_g_fmt_vid_overlay(file,
-                                                                   fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-                       if (vfd->vidioc_g_fmt_vid_out)
-                               ret = vfd->vidioc_g_fmt_vid_out(file, fh, f);
-                       if (!ret)
-                               v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-                       if (vfd->vidioc_g_fmt_vid_out_overlay)
-                               ret = vfd->vidioc_g_fmt_vid_out_overlay(file,
-                                      fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_CAPTURE:
-                       if (vfd->vidioc_g_fmt_vbi_cap)
-                               ret = vfd->vidioc_g_fmt_vbi_cap(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_OUTPUT:
-                       if (vfd->vidioc_g_fmt_vbi_out)
-                               ret = vfd->vidioc_g_fmt_vbi_out(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-                       if (vfd->vidioc_g_fmt_sliced_vbi_cap)
-                               ret = vfd->vidioc_g_fmt_sliced_vbi_cap(file,
-                                                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-                       if (vfd->vidioc_g_fmt_sliced_vbi_out)
-                               ret = vfd->vidioc_g_fmt_sliced_vbi_out(file,
-                                                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_PRIVATE:
-                       if (vfd->vidioc_g_fmt_type_private)
-                               ret = vfd->vidioc_g_fmt_type_private(file,
-                                                               fh, f);
-                       break;
-               }
-
-               break;
-       }
-       case VIDIOC_S_FMT:
-       {
-               struct v4l2_format *f = (struct v4l2_format *)arg;
-
-               /* FIXME: Should be one dump per type */
-               dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
-
-               switch (f->type) {
-               case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-                       v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       if (vfd->vidioc_s_fmt_vid_cap)
-                               ret = vfd->vidioc_s_fmt_vid_cap(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-                       if (vfd->vidioc_s_fmt_vid_overlay)
-                               ret = vfd->vidioc_s_fmt_vid_overlay(file,
-                                                                   fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-                       v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       if (vfd->vidioc_s_fmt_vid_out)
-                               ret = vfd->vidioc_s_fmt_vid_out(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-                       if (vfd->vidioc_s_fmt_vid_out_overlay)
-                               ret = vfd->vidioc_s_fmt_vid_out_overlay(file,
-                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_CAPTURE:
-                       if (vfd->vidioc_s_fmt_vbi_cap)
-                               ret = vfd->vidioc_s_fmt_vbi_cap(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_OUTPUT:
-                       if (vfd->vidioc_s_fmt_vbi_out)
-                               ret = vfd->vidioc_s_fmt_vbi_out(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-                       if (vfd->vidioc_s_fmt_sliced_vbi_cap)
-                               ret = vfd->vidioc_s_fmt_sliced_vbi_cap(file,
-                                                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-                       if (vfd->vidioc_s_fmt_sliced_vbi_out)
-                               ret = vfd->vidioc_s_fmt_sliced_vbi_out(file,
-                                                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_PRIVATE:
-                       if (vfd->vidioc_s_fmt_type_private)
-                               ret = vfd->vidioc_s_fmt_type_private(file,
-                                                               fh, f);
-                       break;
-               }
-               break;
-       }
-       case VIDIOC_TRY_FMT:
-       {
-               struct v4l2_format *f = (struct v4l2_format *)arg;
-
-               /* FIXME: Should be one dump per type */
-               dbgarg (cmd, "type=%s\n", prt_names(f->type,
-                                               v4l2_type_names));
-               switch (f->type) {
-               case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-                       if (vfd->vidioc_try_fmt_vid_cap)
-                               ret = vfd->vidioc_try_fmt_vid_cap(file, fh, f);
-                       if (!ret)
-                               v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-                       if (vfd->vidioc_try_fmt_vid_overlay)
-                               ret = vfd->vidioc_try_fmt_vid_overlay(file,
-                                       fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-                       if (vfd->vidioc_try_fmt_vid_out)
-                               ret = vfd->vidioc_try_fmt_vid_out(file, fh, f);
-                       if (!ret)
-                               v4l_print_pix_fmt(vfd, &f->fmt.pix);
-                       break;
-               case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-                       if (vfd->vidioc_try_fmt_vid_out_overlay)
-                               ret = vfd->vidioc_try_fmt_vid_out_overlay(file,
-                                      fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_CAPTURE:
-                       if (vfd->vidioc_try_fmt_vbi_cap)
-                               ret = vfd->vidioc_try_fmt_vbi_cap(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_VBI_OUTPUT:
-                       if (vfd->vidioc_try_fmt_vbi_out)
-                               ret = vfd->vidioc_try_fmt_vbi_out(file, fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-                       if (vfd->vidioc_try_fmt_sliced_vbi_cap)
-                               ret = vfd->vidioc_try_fmt_sliced_vbi_cap(file,
-                                                               fh, f);
-                       break;
-               case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-                       if (vfd->vidioc_try_fmt_sliced_vbi_out)
-                               ret = vfd->vidioc_try_fmt_sliced_vbi_out(file,
-                                                               fh, f);
-                       break;
-               case V4L2_BUF_TYPE_PRIVATE:
-                       if (vfd->vidioc_try_fmt_type_private)
-                               ret = vfd->vidioc_try_fmt_type_private(file,
-                                                               fh, f);
-                       break;
-               }
-
-               break;
-       }
-       /* FIXME: Those buf reqs could be handled here,
-          with some changes on videobuf to allow its header to be included at
-          videodev2.h or being merged at videodev2.
-        */
-       case VIDIOC_REQBUFS:
-       {
-               struct v4l2_requestbuffers *p=arg;
-
-               if (!vfd->vidioc_reqbufs)
-                       break;
-               ret = check_fmt (vfd, p->type);
-               if (ret)
-                       break;
-
-               ret=vfd->vidioc_reqbufs(file, fh, p);
-               dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
-                               p->count,
-                               prt_names(p->type, v4l2_type_names),
-                               prt_names(p->memory, v4l2_memory_names));
-               break;
-       }
-       case VIDIOC_QUERYBUF:
-       {
-               struct v4l2_buffer *p=arg;
-
-               if (!vfd->vidioc_querybuf)
-                       break;
-               ret = check_fmt (vfd, p->type);
-               if (ret)
-                       break;
-
-               ret=vfd->vidioc_querybuf(file, fh, p);
-               if (!ret)
-                       dbgbuf(cmd,vfd,p);
-               break;
-       }
-       case VIDIOC_QBUF:
-       {
-               struct v4l2_buffer *p=arg;
-
-               if (!vfd->vidioc_qbuf)
-                       break;
-               ret = check_fmt (vfd, p->type);
-               if (ret)
-                       break;
-
-               ret=vfd->vidioc_qbuf(file, fh, p);
-               if (!ret)
-                       dbgbuf(cmd,vfd,p);
-               break;
-       }
-       case VIDIOC_DQBUF:
-       {
-               struct v4l2_buffer *p=arg;
-               if (!vfd->vidioc_dqbuf)
-                       break;
-               ret = check_fmt (vfd, p->type);
-               if (ret)
-                       break;
-
-               ret=vfd->vidioc_dqbuf(file, fh, p);
-               if (!ret)
-                       dbgbuf(cmd,vfd,p);
-               break;
-       }
-       case VIDIOC_OVERLAY:
-       {
-               int *i = arg;
-
-               if (!vfd->vidioc_overlay)
-                       break;
-               dbgarg (cmd, "value=%d\n",*i);
-               ret=vfd->vidioc_overlay(file, fh, *i);
-               break;
-       }
-       case VIDIOC_G_FBUF:
-       {
-               struct v4l2_framebuffer *p = arg;
-
-               if (!vfd->vidioc_g_fbuf)
-                       break;
-               ret = vfd->vidioc_g_fbuf(file, fh, arg);
-               if (!ret) {
-                       dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
-                                       p->capability, p->flags,
-                                       (unsigned long)p->base);
-                       v4l_print_pix_fmt(vfd, &p->fmt);
-               }
-               break;
-       }
-       case VIDIOC_S_FBUF:
-       {
-               struct v4l2_framebuffer *p = arg;
-
-               if (!vfd->vidioc_s_fbuf)
-                       break;
-               dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
-                       p->capability, p->flags, (unsigned long)p->base);
-               v4l_print_pix_fmt(vfd, &p->fmt);
-               ret = vfd->vidioc_s_fbuf(file, fh, arg);
-               break;
-       }
-       case VIDIOC_STREAMON:
-       {
-               enum v4l2_buf_type i = *(int *)arg;
-               if (!vfd->vidioc_streamon)
-                       break;
-               dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
-               ret=vfd->vidioc_streamon(file, fh,i);
-               break;
-       }
-       case VIDIOC_STREAMOFF:
-       {
-               enum v4l2_buf_type i = *(int *)arg;
-
-               if (!vfd->vidioc_streamoff)
-                       break;
-               dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
-               ret=vfd->vidioc_streamoff(file, fh, i);
-               break;
-       }
-       /* ---------- tv norms ---------- */
-       case VIDIOC_ENUMSTD:
-       {
-               struct v4l2_standard *p = arg;
-               v4l2_std_id id = vfd->tvnorms, curr_id = 0;
-               unsigned int index = p->index, i, j = 0;
-               const char *descr = "";
-
-               /* Return norm array in a canonical way */
-               for (i = 0; i <= index && id; i++) {
-                       /* last std value in the standards array is 0, so this
-                          while always ends there since (id & 0) == 0. */
-                       while ((id & standards[j].std) != standards[j].std)
-                               j++;
-                       curr_id = standards[j].std;
-                       descr = standards[j].descr;
-                       j++;
-                       if (curr_id == 0)
-                               break;
-                       if (curr_id != V4L2_STD_PAL &&
-                           curr_id != V4L2_STD_SECAM &&
-                           curr_id != V4L2_STD_NTSC)
-                               id &= ~curr_id;
-               }
-               if (i <= index)
-                       return -EINVAL;
-
-               v4l2_video_std_construct(p, curr_id, descr);
-               p->index = index;
-
-               dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, "
-                               "framelines=%d\n", p->index,
-                               (unsigned long long)p->id, p->name,
-                               p->frameperiod.numerator,
-                               p->frameperiod.denominator,
-                               p->framelines);
-
-               ret = 0;
-               break;
-       }
-       case VIDIOC_G_STD:
-       {
-               v4l2_std_id *id = arg;
-
-               ret = 0;
-               /* Calls the specific handler */
-               if (vfd->vidioc_g_std)
-                       ret = vfd->vidioc_g_std(file, fh, id);
-               else
-                       *id = vfd->current_norm;
-
-               if (!ret)
-                       dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id);
-               break;
-       }
-       case VIDIOC_S_STD:
-       {
-               v4l2_std_id *id = arg,norm;
-
-               dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id);
-
-               norm = (*id) & vfd->tvnorms;
-               if ( vfd->tvnorms && !norm)     /* Check if std is supported */
-                       break;
-
-               /* Calls the specific handler */
-               if (vfd->vidioc_s_std)
-                       ret=vfd->vidioc_s_std(file, fh, &norm);
-               else
-                       ret=-EINVAL;
-
-               /* Updates standard information */
-               if (ret>=0)
-                       vfd->current_norm=norm;
-
-               break;
-       }
-       case VIDIOC_QUERYSTD:
-       {
-               v4l2_std_id *p=arg;
-
-               if (!vfd->vidioc_querystd)
-                       break;
-               ret=vfd->vidioc_querystd(file, fh, arg);
-               if (!ret)
-                       dbgarg (cmd, "detected std=%08Lx\n",
-                                               (unsigned long long)*p);
-               break;
-       }
-       /* ------ input switching ---------- */
-       /* FIXME: Inputs can be handled inside videodev2 */
-       case VIDIOC_ENUMINPUT:
-       {
-               struct v4l2_input *p=arg;
-               int i=p->index;
-
-               if (!vfd->vidioc_enum_input)
-                       break;
-               memset(p, 0, sizeof(*p));
-               p->index=i;
-
-               ret=vfd->vidioc_enum_input(file, fh, p);
-               if (!ret)
-                       dbgarg (cmd, "index=%d, name=%s, type=%d, "
-                                       "audioset=%d, "
-                                       "tuner=%d, std=%08Lx, status=%d\n",
-                                       p->index,p->name,p->type,p->audioset,
-                                       p->tuner,
-                                       (unsigned long long)p->std,
-                                       p->status);
-               break;
-       }
-       case VIDIOC_G_INPUT:
-       {
-               unsigned int *i = arg;
-
-               if (!vfd->vidioc_g_input)
-                       break;
-               ret=vfd->vidioc_g_input(file, fh, i);
-               if (!ret)
-                       dbgarg (cmd, "value=%d\n",*i);
-               break;
-       }
-       case VIDIOC_S_INPUT:
-       {
-               unsigned int *i = arg;
-
-               if (!vfd->vidioc_s_input)
-                       break;
-               dbgarg (cmd, "value=%d\n",*i);
-               ret=vfd->vidioc_s_input(file, fh, *i);
-               break;
-       }
-
-       /* ------ output switching ---------- */
-       case VIDIOC_ENUMOUTPUT:
-       {
-               struct v4l2_output *p = arg;
-               int i = p->index;
-
-               if (!vfd->vidioc_enum_output)
-                       break;
-               memset(p, 0, sizeof(*p));
-               p->index = i;
-
-               ret = vfd->vidioc_enum_output(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "index=%d, name=%s, type=%d, "
-                               "audioset=0x%x, "
-                               "modulator=%d, std=0x%08Lx\n",
-                               p->index, p->name, p->type, p->audioset,
-                               p->modulator, (unsigned long long)p->std);
-               break;
-       }
-       case VIDIOC_G_OUTPUT:
-       {
-               unsigned int *i = arg;
-
-               if (!vfd->vidioc_g_output)
-                       break;
-               ret=vfd->vidioc_g_output(file, fh, i);
-               if (!ret)
-                       dbgarg (cmd, "value=%d\n",*i);
-               break;
-       }
-       case VIDIOC_S_OUTPUT:
-       {
-               unsigned int *i = arg;
-
-               if (!vfd->vidioc_s_output)
-                       break;
-               dbgarg (cmd, "value=%d\n",*i);
-               ret=vfd->vidioc_s_output(file, fh, *i);
-               break;
-       }
-
-       /* --- controls ---------------------------------------------- */
-       case VIDIOC_QUERYCTRL:
-       {
-               struct v4l2_queryctrl *p = arg;
-
-               if (!vfd->vidioc_queryctrl)
-                       break;
-               ret = vfd->vidioc_queryctrl(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, "
-                                       "step=%d, default=%d, flags=0x%08x\n",
-                                       p->id, p->type, p->name,
-                                       p->minimum, p->maximum,
-                                       p->step, p->default_value, p->flags);
-               else
-                       dbgarg(cmd, "id=0x%x\n", p->id);
-               break;
-       }
-       case VIDIOC_G_CTRL:
-       {
-               struct v4l2_control *p = arg;
-
-               if (vfd->vidioc_g_ctrl)
-                       ret = vfd->vidioc_g_ctrl(file, fh, p);
-               else if (vfd->vidioc_g_ext_ctrls) {
-                       struct v4l2_ext_controls ctrls;
-                       struct v4l2_ext_control ctrl;
-
-                       ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
-                       ctrls.count = 1;
-                       ctrls.controls = &ctrl;
-                       ctrl.id = p->id;
-                       ctrl.value = p->value;
-                       if (check_ext_ctrls(&ctrls, 1)) {
-                               ret = vfd->vidioc_g_ext_ctrls(file, fh, &ctrls);
-                               if (ret == 0)
-                                       p->value = ctrl.value;
-                       }
-               } else
-                       break;
-               if (!ret)
-                       dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
-               else
-                       dbgarg(cmd, "id=0x%x\n", p->id);
-               break;
-       }
-       case VIDIOC_S_CTRL:
-       {
-               struct v4l2_control *p = arg;
-               struct v4l2_ext_controls ctrls;
-               struct v4l2_ext_control ctrl;
-
-               if (!vfd->vidioc_s_ctrl && !vfd->vidioc_s_ext_ctrls)
-                       break;
-
-               dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
-
-               if (vfd->vidioc_s_ctrl) {
-                       ret = vfd->vidioc_s_ctrl(file, fh, p);
-                       break;
-               }
-               if (!vfd->vidioc_s_ext_ctrls)
-                       break;
-
-               ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
-               ctrls.count = 1;
-               ctrls.controls = &ctrl;
-               ctrl.id = p->id;
-               ctrl.value = p->value;
-               if (check_ext_ctrls(&ctrls, 1))
-                       ret = vfd->vidioc_s_ext_ctrls(file, fh, &ctrls);
-               break;
-       }
-       case VIDIOC_G_EXT_CTRLS:
-       {
-               struct v4l2_ext_controls *p = arg;
-
-               p->error_idx = p->count;
-               if (!vfd->vidioc_g_ext_ctrls)
-                       break;
-               if (check_ext_ctrls(p, 0))
-                       ret = vfd->vidioc_g_ext_ctrls(file, fh, p);
-               v4l_print_ext_ctrls(cmd, vfd, p, !ret);
-               break;
-       }
-       case VIDIOC_S_EXT_CTRLS:
-       {
-               struct v4l2_ext_controls *p = arg;
-
-               p->error_idx = p->count;
-               if (!vfd->vidioc_s_ext_ctrls)
-                       break;
-               v4l_print_ext_ctrls(cmd, vfd, p, 1);
-               if (check_ext_ctrls(p, 0))
-                       ret = vfd->vidioc_s_ext_ctrls(file, fh, p);
-               break;
-       }
-       case VIDIOC_TRY_EXT_CTRLS:
-       {
-               struct v4l2_ext_controls *p = arg;
-
-               p->error_idx = p->count;
-               if (!vfd->vidioc_try_ext_ctrls)
-                       break;
-               v4l_print_ext_ctrls(cmd, vfd, p, 1);
-               if (check_ext_ctrls(p, 0))
-                       ret = vfd->vidioc_try_ext_ctrls(file, fh, p);
-               break;
-       }
-       case VIDIOC_QUERYMENU:
-       {
-               struct v4l2_querymenu *p = arg;
-
-               if (!vfd->vidioc_querymenu)
-                       break;
-               ret = vfd->vidioc_querymenu(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "id=0x%x, index=%d, name=%s\n",
-                               p->id, p->index, p->name);
-               else
-                       dbgarg(cmd, "id=0x%x, index=%d\n",
-                               p->id, p->index);
-               break;
-       }
-       /* --- audio ---------------------------------------------- */
-       case VIDIOC_ENUMAUDIO:
-       {
-               struct v4l2_audio *p = arg;
-
-               if (!vfd->vidioc_enumaudio)
-                       break;
-               ret = vfd->vidioc_enumaudio(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
-                                       "mode=0x%x\n", p->index, p->name,
-                                       p->capability, p->mode);
-               else
-                       dbgarg(cmd, "index=%d\n", p->index);
-               break;
-       }
-       case VIDIOC_G_AUDIO:
-       {
-               struct v4l2_audio *p = arg;
-               __u32 index = p->index;
-
-               if (!vfd->vidioc_g_audio)
-                       break;
-
-               memset(p, 0, sizeof(*p));
-               p->index = index;
-               ret = vfd->vidioc_g_audio(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
-                                       "mode=0x%x\n", p->index,
-                                       p->name, p->capability, p->mode);
-               else
-                       dbgarg(cmd, "index=%d\n", p->index);
-               break;
-       }
-       case VIDIOC_S_AUDIO:
-       {
-               struct v4l2_audio *p = arg;
-
-               if (!vfd->vidioc_s_audio)
-                       break;
-               dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
-                                       "mode=0x%x\n", p->index, p->name,
-                                       p->capability, p->mode);
-               ret = vfd->vidioc_s_audio(file, fh, p);
-               break;
-       }
-       case VIDIOC_ENUMAUDOUT:
-       {
-               struct v4l2_audioout *p=arg;
-
-               if (!vfd->vidioc_enumaudout)
-                       break;
-               dbgarg(cmd, "Enum for index=%d\n", p->index);
-               ret=vfd->vidioc_enumaudout(file, fh, p);
-               if (!ret)
-                       dbgarg2("index=%d, name=%s, capability=%d, "
-                                       "mode=%d\n", p->index, p->name,
-                                       p->capability,p->mode);
-               break;
-       }
-       case VIDIOC_G_AUDOUT:
-       {
-               struct v4l2_audioout *p=arg;
-
-               if (!vfd->vidioc_g_audout)
-                       break;
-               dbgarg(cmd, "Enum for index=%d\n", p->index);
-               ret=vfd->vidioc_g_audout(file, fh, p);
-               if (!ret)
-                       dbgarg2("index=%d, name=%s, capability=%d, "
-                                       "mode=%d\n", p->index, p->name,
-                                       p->capability,p->mode);
-               break;
-       }
-       case VIDIOC_S_AUDOUT:
-       {
-               struct v4l2_audioout *p=arg;
-
-               if (!vfd->vidioc_s_audout)
-                       break;
-               dbgarg(cmd, "index=%d, name=%s, capability=%d, "
-                                       "mode=%d\n", p->index, p->name,
-                                       p->capability,p->mode);
-
-               ret=vfd->vidioc_s_audout(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_MODULATOR:
-       {
-               struct v4l2_modulator *p=arg;
-               if (!vfd->vidioc_g_modulator)
-                       break;
-               ret=vfd->vidioc_g_modulator(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "index=%d, name=%s, "
-                                       "capability=%d, rangelow=%d,"
-                                       " rangehigh=%d, txsubchans=%d\n",
-                                       p->index, p->name,p->capability,
-                                       p->rangelow, p->rangehigh,
-                                       p->txsubchans);
-               break;
-       }
-       case VIDIOC_S_MODULATOR:
-       {
-               struct v4l2_modulator *p=arg;
-               if (!vfd->vidioc_s_modulator)
-                       break;
-               dbgarg(cmd, "index=%d, name=%s, capability=%d, "
-                               "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
-                               p->index, p->name,p->capability,p->rangelow,
-                               p->rangehigh,p->txsubchans);
-                       ret=vfd->vidioc_s_modulator(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_CROP:
-       {
-               struct v4l2_crop *p=arg;
-               if (!vfd->vidioc_g_crop)
-                       break;
-               dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
-               ret=vfd->vidioc_g_crop(file, fh, p);
-               if (!ret) {
-                       dbgrect(vfd, "", &p->c);
-               }
-               break;
-       }
-       case VIDIOC_S_CROP:
-       {
-               struct v4l2_crop *p=arg;
-               if (!vfd->vidioc_s_crop)
-                       break;
-               dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
-               dbgrect(vfd, "", &p->c);
-               ret=vfd->vidioc_s_crop(file, fh, p);
-               break;
-       }
-       case VIDIOC_CROPCAP:
-       {
-               struct v4l2_cropcap *p = arg;
-
-               /*FIXME: Should also show v4l2_fract pixelaspect */
-               if (!vfd->vidioc_cropcap)
-                       break;
-               dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
-               ret = vfd->vidioc_cropcap(file, fh, p);
-               if (!ret) {
-                       dbgrect(vfd, "bounds ", &p->bounds);
-                       dbgrect(vfd, "defrect ", &p->defrect);
-               }
-               break;
-       }
-       case VIDIOC_G_JPEGCOMP:
-       {
-               struct v4l2_jpegcompression *p=arg;
-               if (!vfd->vidioc_g_jpegcomp)
-                       break;
-               ret=vfd->vidioc_g_jpegcomp(file, fh, p);
-               if (!ret)
-                       dbgarg (cmd, "quality=%d, APPn=%d, "
-                                               "APP_len=%d, COM_len=%d, "
-                                               "jpeg_markers=%d\n",
-                                               p->quality,p->APPn,p->APP_len,
-                                               p->COM_len,p->jpeg_markers);
-               break;
-       }
-       case VIDIOC_S_JPEGCOMP:
-       {
-               struct v4l2_jpegcompression *p=arg;
-               if (!vfd->vidioc_g_jpegcomp)
-                       break;
-               dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
-                                       "COM_len=%d, jpeg_markers=%d\n",
-                                       p->quality,p->APPn,p->APP_len,
-                                       p->COM_len,p->jpeg_markers);
-                       ret=vfd->vidioc_s_jpegcomp(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_ENC_INDEX:
-       {
-               struct v4l2_enc_idx *p=arg;
-
-               if (!vfd->vidioc_g_enc_index)
-                       break;
-               ret=vfd->vidioc_g_enc_index(file, fh, p);
-               if (!ret)
-                       dbgarg (cmd, "entries=%d, entries_cap=%d\n",
-                                       p->entries,p->entries_cap);
-               break;
-       }
-       case VIDIOC_ENCODER_CMD:
-       {
-               struct v4l2_encoder_cmd *p = arg;
-
-               if (!vfd->vidioc_encoder_cmd)
-                       break;
-               memset(&p->raw, 0, sizeof(p->raw));
-               ret = vfd->vidioc_encoder_cmd(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
-               break;
-       }
-       case VIDIOC_TRY_ENCODER_CMD:
-       {
-               struct v4l2_encoder_cmd *p = arg;
-
-               if (!vfd->vidioc_try_encoder_cmd)
-                       break;
-               memset(&p->raw, 0, sizeof(p->raw));
-               ret = vfd->vidioc_try_encoder_cmd(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
-               break;
-       }
-       case VIDIOC_G_PARM:
-       {
-               struct v4l2_streamparm *p=arg;
-               __u32 type=p->type;
-
-               memset(p,0,sizeof(*p));
-               p->type=type;
-
-               if (vfd->vidioc_g_parm) {
-                       ret=vfd->vidioc_g_parm(file, fh, p);
-               } else {
-                       struct v4l2_standard s;
-
-                       if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-                               return -EINVAL;
-
-                       v4l2_video_std_construct(&s, vfd->current_norm,
-                                                v4l2_norm_to_name(vfd->current_norm));
-
-                       p->parm.capture.timeperframe = s.frameperiod;
-                       ret=0;
-               }
-
-               dbgarg (cmd, "type=%d\n", p->type);
-               break;
-       }
-       case VIDIOC_S_PARM:
-       {
-               struct v4l2_streamparm *p=arg;
-               if (!vfd->vidioc_s_parm)
-                       break;
-               dbgarg (cmd, "type=%d\n", p->type);
-               ret=vfd->vidioc_s_parm(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_TUNER:
-       {
-               struct v4l2_tuner *p = arg;
-               __u32 index = p->index;
-
-               if (!vfd->vidioc_g_tuner)
-                       break;
-
-               memset(p, 0, sizeof(*p));
-               p->index = index;
-
-               ret = vfd->vidioc_g_tuner(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "index=%d, name=%s, type=%d, "
-                                       "capability=0x%x, rangelow=%d, "
-                                       "rangehigh=%d, signal=%d, afc=%d, "
-                                       "rxsubchans=0x%x, audmode=%d\n",
-                                       p->index, p->name, p->type,
-                                       p->capability, p->rangelow,
-                                       p->rangehigh, p->signal, p->afc,
-                                       p->rxsubchans, p->audmode);
-               break;
-       }
-       case VIDIOC_S_TUNER:
-       {
-               struct v4l2_tuner *p = arg;
-
-               if (!vfd->vidioc_s_tuner)
-                       break;
-               dbgarg(cmd, "index=%d, name=%s, type=%d, "
-                               "capability=0x%x, rangelow=%d, "
-                               "rangehigh=%d, signal=%d, afc=%d, "
-                               "rxsubchans=0x%x, audmode=%d\n",
-                               p->index, p->name, p->type,
-                               p->capability, p->rangelow,
-                               p->rangehigh, p->signal, p->afc,
-                               p->rxsubchans, p->audmode);
-               ret = vfd->vidioc_s_tuner(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_FREQUENCY:
-       {
-               struct v4l2_frequency *p = arg;
-
-               if (!vfd->vidioc_g_frequency)
-                       break;
-
-               memset(p->reserved, 0, sizeof(p->reserved));
-
-               ret = vfd->vidioc_g_frequency(file, fh, p);
-               if (!ret)
-                       dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
-                                       p->tuner, p->type, p->frequency);
-               break;
-       }
-       case VIDIOC_S_FREQUENCY:
-       {
-               struct v4l2_frequency *p=arg;
-               if (!vfd->vidioc_s_frequency)
-                       break;
-               dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
-                               p->tuner,p->type,p->frequency);
-               ret=vfd->vidioc_s_frequency(file, fh, p);
-               break;
-       }
-       case VIDIOC_G_SLICED_VBI_CAP:
-       {
-               struct v4l2_sliced_vbi_cap *p = arg;
-               __u32 type = p->type;
-
-               if (!vfd->vidioc_g_sliced_vbi_cap)
-                       break;
-               memset(p, 0, sizeof(*p));
-               p->type = type;
-               dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
-               ret = vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
-               if (!ret)
-                       dbgarg2("service_set=%d\n", p->service_set);
-               break;
-       }
-       case VIDIOC_LOG_STATUS:
-       {
-               if (!vfd->vidioc_log_status)
-                       break;
-               ret=vfd->vidioc_log_status(file, fh);
-               break;
-       }
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-       case VIDIOC_DBG_G_REGISTER:
-       {
-               struct v4l2_register *p=arg;
-               if (!capable(CAP_SYS_ADMIN))
-                       ret=-EPERM;
-               else if (vfd->vidioc_g_register)
-                       ret=vfd->vidioc_g_register(file, fh, p);
-               break;
-       }
-       case VIDIOC_DBG_S_REGISTER:
-       {
-               struct v4l2_register *p=arg;
-               if (!capable(CAP_SYS_ADMIN))
-                       ret=-EPERM;
-               else if (vfd->vidioc_s_register)
-                       ret=vfd->vidioc_s_register(file, fh, p);
-               break;
-       }
-#endif
-       case VIDIOC_G_CHIP_IDENT:
-       {
-               struct v4l2_chip_ident *p=arg;
-               if (!vfd->vidioc_g_chip_ident)
-                       break;
-               ret=vfd->vidioc_g_chip_ident(file, fh, p);
-               if (!ret)
-                       dbgarg (cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
-               break;
-       }
-       default:
-       {
-               if (!vfd->vidioc_default)
-                       break;
-               ret = vfd->vidioc_default(file, fh, cmd, arg);
-               break;
-       }
-       case VIDIOC_S_HW_FREQ_SEEK:
-       {
-               struct v4l2_hw_freq_seek *p = arg;
-               if (!vfd->vidioc_s_hw_freq_seek)
-                       break;
-               dbgarg(cmd,
-                       "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n",
-                       p->tuner, p->type, p->seek_upward, p->wrap_around);
-               ret = vfd->vidioc_s_hw_freq_seek(file, fh, p);
-               break;
-       }
-       } /* switch */
-
-       if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
-               if (ret < 0) {
-                       v4l_print_ioctl(vfd->name, cmd);
-                       printk(KERN_CONT " error %d\n", ret);
-               }
-       }
-
-       return ret;
-}
-
-int video_ioctl2 (struct inode *inode, struct file *file,
-              unsigned int cmd, unsigned long arg)
-{
-       char    sbuf[128];
-       void    *mbuf = NULL;
-       void    *parg = NULL;
-       int     err  = -EINVAL;
-       int     is_ext_ctrl;
-       size_t  ctrls_size = 0;
-       void __user *user_ptr = NULL;
-
-#ifdef __OLD_VIDIOC_
-       cmd = video_fix_command(cmd);
-#endif
-       is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
-                      cmd == VIDIOC_TRY_EXT_CTRLS);
-
-       /*  Copy arguments into temp kernel buffer  */
-       switch (_IOC_DIR(cmd)) {
-       case _IOC_NONE:
-               parg = NULL;
-               break;
-       case _IOC_READ:
-       case _IOC_WRITE:
-       case (_IOC_WRITE | _IOC_READ):
-               if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
-                       parg = sbuf;
-               } else {
-                       /* too big to allocate from stack */
-                       mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
-                       if (NULL == mbuf)
-                               return -ENOMEM;
-                       parg = mbuf;
-               }
-
-               err = -EFAULT;
-               if (_IOC_DIR(cmd) & _IOC_WRITE)
-                       if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
-                               goto out;
-               break;
-       }
-
-       if (is_ext_ctrl) {
-               struct v4l2_ext_controls *p = parg;
-
-               /* In case of an error, tell the caller that it wasn't
-                  a specific control that caused it. */
-               p->error_idx = p->count;
-               user_ptr = (void __user *)p->controls;
-               if (p->count) {
-                       ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
-                       /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
-                       mbuf = kmalloc(ctrls_size, GFP_KERNEL);
-                       err = -ENOMEM;
-                       if (NULL == mbuf)
-                               goto out_ext_ctrl;
-                       err = -EFAULT;
-                       if (copy_from_user(mbuf, user_ptr, ctrls_size))
-                               goto out_ext_ctrl;
-                       p->controls = mbuf;
-               }
-       }
-
-       /* Handles IOCTL */
-       err = __video_do_ioctl(inode, file, cmd, parg);
-       if (err == -ENOIOCTLCMD)
-               err = -EINVAL;
-       if (is_ext_ctrl) {
-               struct v4l2_ext_controls *p = parg;
-
-               p->controls = (void *)user_ptr;
-               if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
-                       err = -EFAULT;
-               goto out_ext_ctrl;
-       }
-       if (err < 0)
-               goto out;
-
-out_ext_ctrl:
-       /*  Copy results into user buffer  */
-       switch (_IOC_DIR(cmd))
-       {
-       case _IOC_READ:
-       case (_IOC_WRITE | _IOC_READ):
-               if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
-                       err = -EFAULT;
-               break;
-       }
-
-out:
-       kfree(mbuf);
-       return err;
-}
-EXPORT_SYMBOL(video_ioctl2);
-
-/**
- * get_index - assign stream number based on parent device
- * @vdev: video_device to assign index number to, vdev->dev should be assigned
- * @num: -1 if auto assign, requested number otherwise
- *
- *
- * returns -ENFILE if num is already in use, a free index number if
- * successful.
- */
-static int get_index(struct video_device *vdev, int num)
-{
-       u32 used = 0;
-       const int max_index = sizeof(used) * 8 - 1;
-       int i;
-
-       /* Currently a single v4l driver instance cannot create more than
-          32 devices.
-          Increase to u64 or an array of u32 if more are needed. */
-       if (num > max_index) {
-               printk(KERN_ERR "videodev: %s num is too large\n", __func__);
-               return -EINVAL;
-       }
-
-       for (i = 0; i < VIDEO_NUM_DEVICES; i++) {
-               if (video_device[i] != NULL &&
-                   video_device[i] != vdev &&
-                   video_device[i]->dev == vdev->dev) {
-                       used |= 1 << video_device[i]->index;
-               }
-       }
-
-       if (num >= 0) {
-               if (used & (1 << num))
-                       return -ENFILE;
-               return num;
-       }
-
-       i = ffz(used);
-       return i > max_index ? -ENFILE : i;
-}
-
-static const struct file_operations video_fops;
-
-int video_register_device(struct video_device *vfd, int type, int nr)
-{
-       return video_register_device_index(vfd, type, nr, -1);
-}
-EXPORT_SYMBOL(video_register_device);
-
-/**
- *     video_register_device - register video4linux devices
- *     @vfd:  video device structure we want to register
- *     @type: type of device to register
- *     @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
- *             -1 == first free)
- *
- *     The registration code assigns minor numbers based on the type
- *     requested. -ENFILE is returned in all the device slots for this
- *     category are full. If not then the minor field is set and the
- *     driver initialize function is called (if non %NULL).
- *
- *     Zero is returned on success.
- *
- *     Valid types are
- *
- *     %VFL_TYPE_GRABBER - A frame grabber
- *
- *     %VFL_TYPE_VTX - A teletext device
- *
- *     %VFL_TYPE_VBI - Vertical blank data (undecoded)
- *
- *     %VFL_TYPE_RADIO - A radio card
- */
-
-int video_register_device_index(struct video_device *vfd, int type, int nr,
-                                       int index)
-{
-       int i=0;
-       int base;
-       int end;
-       int ret;
-       char *name_base;
-
-       switch(type)
-       {
-               case VFL_TYPE_GRABBER:
-                       base=MINOR_VFL_TYPE_GRABBER_MIN;
-                       end=MINOR_VFL_TYPE_GRABBER_MAX+1;
-                       name_base = "video";
-                       break;
-               case VFL_TYPE_VTX:
-                       base=MINOR_VFL_TYPE_VTX_MIN;
-                       end=MINOR_VFL_TYPE_VTX_MAX+1;
-                       name_base = "vtx";
-                       break;
-               case VFL_TYPE_VBI:
-                       base=MINOR_VFL_TYPE_VBI_MIN;
-                       end=MINOR_VFL_TYPE_VBI_MAX+1;
-                       name_base = "vbi";
-                       break;
-               case VFL_TYPE_RADIO:
-                       base=MINOR_VFL_TYPE_RADIO_MIN;
-                       end=MINOR_VFL_TYPE_RADIO_MAX+1;
-                       name_base = "radio";
-                       break;
-               default:
-                       printk(KERN_ERR "%s called with unknown type: %d\n",
-                              __func__, type);
-                       return -1;
-       }
-
-       /* pick a minor number */
-       mutex_lock(&videodev_lock);
-       if (nr >= 0  &&  nr < end-base) {
-               /* use the one the driver asked for */
-               i = base+nr;
-               if (NULL != video_device[i]) {
-                       mutex_unlock(&videodev_lock);
-                       return -ENFILE;
-               }
-       } else {
-               /* use first free */
-               for(i=base;i<end;i++)
-                       if (NULL == video_device[i])
-                               break;
-               if (i == end) {
-                       mutex_unlock(&videodev_lock);
-                       return -ENFILE;
-               }
-       }
-       video_device[i]=vfd;
-       vfd->minor=i;
-
-       ret = get_index(vfd, index);
-       vfd->index = ret;
-
-       mutex_unlock(&videodev_lock);
-
-       if (ret < 0) {
-               printk(KERN_ERR "%s: get_index failed\n", __func__);
-               goto fail_minor;
-       }
-
-       mutex_init(&vfd->lock);
-
-       /* sysfs class */
-       memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
-       vfd->class_dev.class       = &video_class;
-       vfd->class_dev.devt        = MKDEV(VIDEO_MAJOR, vfd->minor);
-       if (vfd->dev)
-               vfd->class_dev.parent = vfd->dev;
-       sprintf(vfd->class_dev.bus_id, "%s%d", name_base, i - base);
-       ret = device_register(&vfd->class_dev);
-       if (ret < 0) {
-               printk(KERN_ERR "%s: device_register failed\n", __func__);
-               goto fail_minor;
-       }
-
-#if 1
-       /* needed until all drivers are fixed */
-       if (!vfd->release)
-               printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
-                      "Please fix your driver for proper sysfs support, see "
-                      "http://lwn.net/Articles/36850/\n", vfd->name);
-#endif
-       return 0;
-
-fail_minor:
-       mutex_lock(&videodev_lock);
-       video_device[vfd->minor] = NULL;
-       vfd->minor = -1;
-       mutex_unlock(&videodev_lock);
-       return ret;
-}
-EXPORT_SYMBOL(video_register_device_index);
-
-/**
- *     video_unregister_device - unregister a video4linux device
- *     @vfd: the device to unregister
- *
- *     This unregisters the passed device and deassigns the minor
- *     number. Future open calls will be met with errors.
- */
-
-void video_unregister_device(struct video_device *vfd)
-{
-       mutex_lock(&videodev_lock);
-       if(video_device[vfd->minor]!=vfd)
-               panic("videodev: bad unregister");
-
-       video_device[vfd->minor]=NULL;
-       device_unregister(&vfd->class_dev);
-       mutex_unlock(&videodev_lock);
-}
-EXPORT_SYMBOL(video_unregister_device);
-
-/*
- * Video fs operations
- */
-static const struct file_operations video_fops=
-{
-       .owner          = THIS_MODULE,
-       .llseek         = no_llseek,
-       .open           = video_open,
-};
-
-/*
- *     Initialise video for linux
- */
-
-static int __init videodev_init(void)
-{
-       int ret;
-
-       printk(KERN_INFO "Linux video capture interface: v2.00\n");
-       if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
-               printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
-               return -EIO;
-       }
-
-       ret = class_register(&video_class);
-       if (ret < 0) {
-               unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
-               printk(KERN_WARNING "video_dev: class_register failed\n");
-               return -EIO;
-       }
-
-       return 0;
-}
-
-static void __exit videodev_exit(void)
-{
-       class_unregister(&video_class);
-       unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
-}
-
-module_init(videodev_init)
-module_exit(videodev_exit)
-
-MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
-MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
-MODULE_LICENSE("GPL");
-
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */