diff options
Diffstat (limited to 'drivers/media/video/videodev.c')
| -rw-r--r-- | drivers/media/video/videodev.c | 1690 |
1 files changed, 0 insertions, 1690 deletions
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c deleted file mode 100644 index edd7b83c346..00000000000 --- a/drivers/media/video/videodev.c +++ /dev/null @@ -1,1690 +0,0 @@ -/* - * 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...) \ - 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> -#include <linux/sched.h> -#include <linux/smp_lock.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 <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" - -/* - * sysfs stuff - */ - -static ssize_t show_name(struct class_device *cd, 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 CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL); - -struct video_device *video_device_alloc(void) -{ - struct video_device *vfd; - - vfd = kzalloc(sizeof(*vfd),GFP_KERNEL); - return vfd; -} - -void video_device_release(struct video_device *vfd) -{ - kfree(vfd); -} - -static void video_release(struct class_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, - .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_dentry->d_inode)]; -} - -/* - * 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; - 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); - 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); - 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; -} - -/* - * 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; -} - -int video_exclusive_release(struct inode *inode, struct file *file) -{ - struct video_device *vfl = video_devdata(file); - - vfl->users--; - 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 CONFIG_VIDEO_V4L1_COMPAT - /* --- 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; - -/** - * 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(struct video_device *vfd, int type, int nr) -{ - 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", - __FUNCTION__, 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; - mutex_unlock(&videodev_lock); - mutex_init(&vfd->lock); - - /* sysfs class */ - memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev)); - if (vfd->dev) - vfd->class_dev.dev = vfd->dev; - vfd->class_dev.class = &video_class; - vfd->class_dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor); - sprintf(vfd->class_dev.class_id, "%s%d", name_base, i - base); - ret = class_device_register(&vfd->class_dev); - if (ret < 0) { - printk(KERN_ERR "%s: class_device_register failed\n", - __FUNCTION__); - goto fail_minor; - } - ret = class_device_create_file(&vfd->class_dev, &class_device_attr_name); - if (ret < 0) { - printk(KERN_ERR "%s: class_device_create_file 'name' failed\n", - __FUNCTION__); - goto fail_classdev; - } - -#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_classdev: - class_device_unregister(&vfd->class_dev); -fail_minor: - mutex_lock(&videodev_lock); - video_device[vfd->minor] = NULL; - vfd->minor = -1; - mutex_unlock(&videodev_lock); - return ret; -} - -/** - * 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; - class_device_unregister(&vfd->class_dev); - mutex_unlock(&videodev_lock); -} - -/* - * Video fs operations - */ -static 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) - -EXPORT_SYMBOL(video_register_device); -EXPORT_SYMBOL(video_unregister_device); -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, Mauro Carvalho Chehab <mchehab@infradead.org>"); -MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2"); -MODULE_LICENSE("GPL"); - - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |