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path: root/drivers/media/video/videodev.c
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Diffstat (limited to 'drivers/media/video/videodev.c')
-rw-r--r--drivers/media/video/videodev.c1272
1 files changed, 1257 insertions, 15 deletions
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 5f87dd5f1d0b..2dfa7f23d0ca 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -1,20 +1,31 @@
/*
- * Video capture interface for Linux
+ * 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.
+ * 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.
+ * 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.
*
- * Author: Alan Cox, <alan@redhat.com>
+ * 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...) \
+ if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
+ printk (KERN_DEBUG "%s: ", vfd->name); \
+ v4l_printk_ioctl(cmd); \
+ printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
+
+#define dbgarg2(fmt, arg...) \
+ if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
+ printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
+
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
@@ -30,7 +41,13 @@
#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>
#define VIDEO_NUM_DEVICES 256
#define VIDEO_NAME "video4linux"
@@ -41,7 +58,8 @@
static ssize_t show_name(struct class_device *cd, char *buf)
{
- struct video_device *vfd = container_of(cd, struct video_device, class_dev);
+ struct video_device *vfd = container_of(cd, struct video_device,
+ class_dev);
return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
}
@@ -62,7 +80,8 @@ void video_device_release(struct video_device *vfd)
static void video_release(struct class_device *cd)
{
- struct video_device *vfd = container_of(cd, struct video_device, class_dev);
+ struct video_device *vfd = container_of(cd, struct video_device,
+ class_dev);
#if 1
/* needed until all drivers are fixed */
@@ -90,7 +109,7 @@ struct video_device* video_devdata(struct file *file)
}
/*
- * Open a video device.
+ * Open a video device - FIXME: Obsoleted
*/
static int video_open(struct inode *inode, struct file *file)
{
@@ -130,6 +149,7 @@ static int video_open(struct inode *inode, struct file *file)
* helper function -- handles userspace copying for ioctl arguments
*/
+#ifdef __OLD_VIDIOC_
static unsigned int
video_fix_command(unsigned int cmd)
{
@@ -155,7 +175,11 @@ video_fix_command(unsigned int cmd)
}
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,
@@ -166,8 +190,15 @@ video_usercopy(struct inode *inode, struct file *file,
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)) {
@@ -193,14 +224,43 @@ video_usercopy(struct inode *inode, struct file *file,
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))
{
@@ -218,6 +278,7 @@ out:
/*
* open/release helper functions -- handle exclusive opens
+ * Should be removed soon
*/
int video_exclusive_open(struct inode *inode, struct file *file)
{
@@ -242,6 +303,1184 @@ int video_exclusive_release(struct inode *inode, struct file *file)
return 0;
}
+static char *v4l2_memory_names[] = {
+ [V4L2_MEMORY_MMAP] = "mmap",
+ [V4L2_MEMORY_USERPTR] = "userptr",
+ [V4L2_MEMORY_OVERLAY] = "overlay",
+};
+
+
+/* FIXME: Those stuff are replicated also on v4l2-common.c */
+static char *v4l2_type_names_FIXME[] = {
+ [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
+ [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
+ [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out",
+ [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
+ [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
+ [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
+ [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",
+ [V4L2_BUF_TYPE_PRIVATE] = "private",
+};
+
+static char *v4l2_field_names_FIXME[] = {
+ [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",
+};
+
+#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
+
+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\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_FIXME),
+ p->bytesused,p->flags,
+ p->field,p->sequence,
+ prt_names(p->memory,v4l2_memory_names),
+ p->m.userptr);
+ 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=0x%08x, field=%s, "
+ "bytesperline=%d sizeimage=%d, colorspace=%d\n",
+ fmt->width,fmt->height,fmt->pixelformat,
+ prt_names(fmt->field,v4l2_field_names_FIXME),
+ fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
+};
+
+
+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_cap)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_try_fmt_overlay)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_output)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi_capture)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_try_fmt_video_output)
+ return (0);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_output)
+ 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);
+ }
+
+ 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_cap)
+ ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_enum_fmt_overlay)
+ ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_enum_fmt_vbi)
+ ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_enum_fmt_vbi_output)
+ ret=vfd->vidioc_enum_fmt_vbi_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_enum_fmt_vbi_capture)
+ ret=vfd->vidioc_enum_fmt_vbi_capture(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_enum_fmt_video_output)
+ ret=vfd->vidioc_enum_fmt_video_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_enum_fmt_vbi_output)
+ ret=vfd->vidioc_enum_fmt_vbi_output(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;
+ }
+ if (!ret)
+ dbgarg (cmd, "index=%d, type=%d, flags=%d, "
+ "description=%s,"
+ " pixelformat=0x%8x\n",
+ f->index, f->type, f->flags,
+ f->description,
+ f->pixelformat);
+
+ break;
+ }
+ case VIDIOC_G_FMT:
+ {
+ struct v4l2_format *f = (struct v4l2_format *)arg;
+ enum v4l2_buf_type type=f->type;
+
+ memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
+ f->type=type;
+
+ /* FIXME: Should be one dump per type */
+ dbgarg (cmd, "type=%s\n", prt_names(type,
+ v4l2_type_names_FIXME));
+
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (vfd->vidioc_g_fmt_cap)
+ ret=vfd->vidioc_g_fmt_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_overlay)
+ ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_g_fmt_vbi)
+ ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_g_fmt_vbi_output)
+ ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_g_fmt_vbi_capture)
+ ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_g_fmt_video_output)
+ ret=vfd->vidioc_g_fmt_video_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_g_fmt_vbi_output)
+ ret=vfd->vidioc_g_fmt_vbi_output(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_FIXME));
+
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ v4l_print_pix_fmt(vfd,&f->fmt.pix);
+ if (vfd->vidioc_s_fmt_cap)
+ ret=vfd->vidioc_s_fmt_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_s_fmt_overlay)
+ ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_s_fmt_vbi)
+ ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_s_fmt_vbi_output)
+ ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_s_fmt_vbi_capture)
+ ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_s_fmt_video_output)
+ ret=vfd->vidioc_s_fmt_video_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_s_fmt_vbi_output)
+ ret=vfd->vidioc_s_fmt_vbi_output(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_FIXME));
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (vfd->vidioc_try_fmt_cap)
+ ret=vfd->vidioc_try_fmt_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_overlay)
+ ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi)
+ ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_output)
+ ret=vfd->vidioc_try_fmt_vbi_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi_capture)
+ ret=vfd->vidioc_try_fmt_vbi_capture(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_try_fmt_video_output)
+ ret=vfd->vidioc_try_fmt_video_output(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_output)
+ ret=vfd->vidioc_try_fmt_vbi_output(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_FIXME),
+ 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_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_OVERLAY:
+ {
+ int *i = arg;
+
+ if (!vfd->vidioc_overlay)
+ break;
+ dbgarg (cmd, "value=%d\n",*i);
+ ret=vfd->vidioc_overlay(file, fh, *i);
+ break;
+ }
+#ifdef HAVE_V4L1
+ /* --- streaming capture ------------------------------------- */
+ case VIDIOCGMBUF:
+ {
+ struct video_mbuf *p=arg;
+
+ memset(p,0,sizeof(p));
+
+ if (!vfd->vidiocgmbuf)
+ break;
+ 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);
+ break;
+ }
+#endif
+ 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=%d, 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=%d, 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_FIXME));
+ 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_FIXME));
+ ret=vfd->vidioc_streamoff(file, fh, i);
+ break;
+ }
+ /* ---------- tv norms ---------- */
+ case VIDIOC_ENUMSTD:
+ {
+ struct v4l2_standard *p = arg;
+ unsigned int index = p->index;
+
+ if (!vfd->tvnormsize) {
+ printk (KERN_WARNING "%s: no TV norms defined!\n",
+ vfd->name);
+ break;
+ }
+
+ if (index<=0 || index >= vfd->tvnormsize) {
+ ret=-EINVAL;
+ break;
+ }
+ v4l2_video_std_construct(p, vfd->tvnorms[p->index].id,
+ vfd->tvnorms[p->index].name);
+ p->index = index;
+
+ dbgarg (cmd, "index=%d, id=%Ld, 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;
+
+ *id = vfd->current_norm;
+
+ dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
+
+ ret=0;
+ break;
+ }
+ case VIDIOC_S_STD:
+ {
+ v4l2_std_id *id = arg;
+ unsigned int i;
+
+ if (!vfd->tvnormsize) {
+ printk (KERN_WARNING "%s: no TV norms defined!\n",
+ vfd->name);
+ break;
+ }
+
+ dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
+
+ /* First search for exact match */
+ for (i = 0; i < vfd->tvnormsize; i++)
+ if (*id == vfd->tvnorms[i].id)
+ break;
+ /* Then for a generic video std that contains desired std */
+ if (i == vfd->tvnormsize)
+ for (i = 0; i < vfd->tvnormsize; i++)
+ if (*id & vfd->tvnorms[i].id)
+ break;
+ if (i == vfd->tvnormsize) {
+ break;
+ }
+
+ /* Calls the specific handler */
+ if (vfd->vidioc_s_std)
+ ret=vfd->vidioc_s_std(file, fh, i);
+ else
+ ret=-EINVAL;
+
+ /* Updates standard information */
+ if (!ret)
+ vfd->current_norm=*id;
+
+ 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=%Lu\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=%Ld, 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_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=%d, 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);
+ break;
+ }
+ case VIDIOC_G_CTRL:
+ {
+ struct v4l2_control *p = arg;
+
+ if (!vfd->vidioc_g_ctrl)
+ break;
+ dbgarg(cmd, "Enum for index=%d\n", p->id);
+
+ ret=vfd->vidioc_g_ctrl(file, fh, p);
+ if (!ret)
+ dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
+ break;
+ }
+ case VIDIOC_S_CTRL:
+ {
+ struct v4l2_control *p = arg;
+
+ if (!vfd->vidioc_s_ctrl)
+ break;
+ dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
+
+ ret=vfd->vidioc_s_ctrl(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *p = arg;
+
+ if (vfd->vidioc_g_ext_ctrls) {
+ dbgarg(cmd, "count=%d\n", p->count);
+
+ ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
+ }
+ break;
+ }
+ case VIDIOC_S_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *p = arg;
+
+ if (vfd->vidioc_s_ext_ctrls) {
+ dbgarg(cmd, "count=%d\n", p->count);
+
+ ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
+ }
+ break;
+ }
+ case VIDIOC_TRY_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *p = arg;
+
+ if (vfd->vidioc_try_ext_ctrls) {
+ dbgarg(cmd, "count=%d\n", p->count);
+
+ 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=%d, index=%d, name=%s\n",
+ p->id,p->index,p->name);
+ break;
+ }
+ /* --- audio ---------------------------------------------- */
+ case VIDIOC_ENUMAUDIO:
+ {
+ struct v4l2_audio *p=arg;
+
+ if (!vfd->vidioc_enumaudio)
+ break;
+ dbgarg(cmd, "Enum for index=%d\n", p->index);
+ ret=vfd->vidioc_enumaudio(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_AUDIO:
+ {
+ struct v4l2_audio *p=arg;
+
+ if (!vfd->vidioc_g_audio)
+ break;
+ dbgarg(cmd, "Get for index=%d\n", p->index);
+ ret=vfd->vidioc_g_audio(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_AUDIO:
+ {
+ struct v4l2_audio *p=arg;
+
+ if (!vfd->vidioc_s_audio)
+ break;
+ dbgarg(cmd, "index=%d, name=%s, capability=%d, "
+ "mode=%d\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;
+ ret=vfd->vidioc_g_crop(file, fh, p);
+ if (!ret) {
+ dbgarg(cmd, "type=%d\n", p->type);
+ dbgrect(vfd, "", &p->c);
+ }
+ break;
+ }
+ case VIDIOC_S_CROP:
+ {
+ struct v4l2_crop *p=arg;
+ if (!vfd->vidioc_s_crop)
+ break;
+ dbgarg(cmd, "type=%d\n", p->type);
+ 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=%d\n", p->type);
+ dbgrect(vfd, "bounds ", &p->bounds);
+ dbgrect(vfd, "defrect ", &p->defrect);
+ ret=vfd->vidioc_cropcap(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_MPEGCOMP:
+ {
+ struct v4l2_mpeg_compression *p=arg;
+
+ /*FIXME: Several fields not shown */
+ if (!vfd->vidioc_g_mpegcomp)
+ break;
+ ret=vfd->vidioc_g_mpegcomp(file, fh, p);
+ if (!ret)
+ dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
+ " ts_pid_video=%d, ts_pid_pcr=%d, "
+ "ps_size=%d, au_sample_rate=%d, "
+ "au_pesid=%c, vi_frame_rate=%d, "
+ "vi_frames_per_gop=%d, "
+ "vi_bframes_count=%d, vi_pesid=%c\n",
+ p->ts_pid_pmt,p->ts_pid_audio,
+ p->ts_pid_video,p->ts_pid_pcr,
+ p->ps_size, p->au_sample_rate,
+ p->au_pesid, p->vi_frame_rate,
+ p->vi_frames_per_gop,
+ p->vi_bframes_count, p->vi_pesid);
+ break;
+ }
+ case VIDIOC_S_MPEGCOMP:
+ {
+ struct v4l2_mpeg_compression *p=arg;
+ /*FIXME: Several fields not shown */
+ if (!vfd->vidioc_s_mpegcomp)
+ break;
+ dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
+ "ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
+ "au_sample_rate=%d, au_pesid=%c, "
+ "vi_frame_rate=%d, vi_frames_per_gop=%d, "
+ "vi_bframes_count=%d, vi_pesid=%c\n",
+ p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
+ p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
+ p->au_pesid, p->vi_frame_rate,
+ p->vi_frames_per_gop, p->vi_bframes_count,
+ p->vi_pesid);
+ ret=vfd->vidioc_s_mpegcomp(file, fh, p);
+ 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_PARM:
+ {
+ struct v4l2_streamparm *p=arg;
+ if (!vfd->vidioc_g_parm)
+ break;
+ ret=vfd->vidioc_g_parm(file, fh, p);
+ 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;
+ if (!vfd->vidioc_g_tuner)
+ break;
+ ret=vfd->vidioc_g_tuner(file, fh, p);
+ if (!ret)
+ dbgarg (cmd, "index=%d, name=%s, type=%d, "
+ "capability=%d, rangelow=%d, "
+ "rangehigh=%d, signal=%d, afc=%d, "
+ "rxsubchans=%d, audmode=%d\n",
+ p->index, p->name, p->type,
+ p->capability, p->rangelow,
+ p->rangehigh, p->rxsubchans,
+ p->audmode, p->signal, p->afc);
+ 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=%d, rangelow=%d, rangehigh=%d, "
+ "signal=%d, afc=%d, rxsubchans=%d, "
+ "audmode=%d\n",p->index, p->name, p->type,
+ p->capability, p->rangelow,p->rangehigh,
+ p->rxsubchans, p->audmode, p->signal,
+ p->afc);
+ ret=vfd->vidioc_s_tuner(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_FREQUENCY:
+ {
+ struct v4l2_frequency *p=arg;
+ if (!vfd->vidioc_g_frequency)
+ break;
+ 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;
+ if (!vfd->vidioc_g_sliced_vbi_cap)
+ break;
+ ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
+ if (!ret)
+ dbgarg (cmd, "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;
+ }
+
+ /* --- Others --------------------------------------------- */
+
+ default:
+ ret=v4l_compat_translate_ioctl(inode,file,cmd,arg,__video_do_ioctl);
+ }
+
+ if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
+ if (ret<0) {
+ printk ("%s: err:\n", vfd->name);
+ v4l_print_ioctl(vfd->name, cmd);
+ }
+ }
+
+ 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;
+}
+
+
static struct file_operations video_fops;
/**
@@ -371,7 +1610,9 @@ void video_unregister_device(struct video_device *vfd)
mutex_unlock(&videodev_lock);
}
-
+/*
+ * Video fs operations
+ */
static struct file_operations video_fops=
{
.owner = THIS_MODULE,
@@ -387,7 +1628,7 @@ static int __init videodev_init(void)
{
int ret;
- printk(KERN_INFO "Linux video capture interface: v1.00\n");
+ 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;
@@ -418,11 +1659,12 @@ EXPORT_SYMBOL(video_devdata);
EXPORT_SYMBOL(video_usercopy);
EXPORT_SYMBOL(video_exclusive_open);
EXPORT_SYMBOL(video_exclusive_release);
+EXPORT_SYMBOL(video_ioctl2);
EXPORT_SYMBOL(video_device_alloc);
EXPORT_SYMBOL(video_device_release);
-MODULE_AUTHOR("Alan Cox");
-MODULE_DESCRIPTION("Device registrar for Video4Linux drivers");
+MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
+MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 03:27:03 +0300