Merge ../linus
[linux-2.6] / drivers / media / video / videodev.c
1 /*
2  * Video capture interface for Linux version 2
3  *
4  *      A generic video device interface for the LINUX operating system
5  *      using a set of device structures/vectors for low level operations.
6  *
7  *      This program is free software; you can redistribute it and/or
8  *      modify it under the terms of the GNU General Public License
9  *      as published by the Free Software Foundation; either version
10  *      2 of the License, or (at your option) any later version.
11  *
12  * Authors:     Alan Cox, <alan@redhat.com> (version 1)
13  *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
14  *
15  * Fixes:       20000516  Claudio Matsuoka <claudio@conectiva.com>
16  *              - Added procfs support
17  */
18
19 #define dbgarg(cmd, fmt, arg...) \
20                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {                \
21                         printk (KERN_DEBUG "%s: ",  vfd->name);         \
22                         v4l_printk_ioctl(cmd);                          \
23                         printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg); \
24                 }
25
26 #define dbgarg2(fmt, arg...) \
27                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)                  \
28                         printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
29
30 #include <linux/module.h>
31 #include <linux/types.h>
32 #include <linux/kernel.h>
33 #include <linux/sched.h>
34 #include <linux/smp_lock.h>
35 #include <linux/mm.h>
36 #include <linux/string.h>
37 #include <linux/errno.h>
38 #include <linux/init.h>
39 #include <linux/kmod.h>
40 #include <linux/slab.h>
41 #include <asm/uaccess.h>
42 #include <asm/system.h>
43
44 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
45 #include <linux/videodev2.h>
46
47 #ifdef CONFIG_VIDEO_V4L1
48 #include <linux/videodev.h>
49 #endif
50 #include <media/v4l2-common.h>
51
52 #define VIDEO_NUM_DEVICES       256
53 #define VIDEO_NAME              "video4linux"
54
55 /*
56  *      sysfs stuff
57  */
58
59 static ssize_t show_name(struct class_device *cd, char *buf)
60 {
61         struct video_device *vfd = container_of(cd, struct video_device,
62                                                                 class_dev);
63         return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
64 }
65
66 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
67
68 struct video_device *video_device_alloc(void)
69 {
70         struct video_device *vfd;
71
72         vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
73         return vfd;
74 }
75
76 void video_device_release(struct video_device *vfd)
77 {
78         kfree(vfd);
79 }
80
81 static void video_release(struct class_device *cd)
82 {
83         struct video_device *vfd = container_of(cd, struct video_device,
84                                                                 class_dev);
85
86 #if 1
87         /* needed until all drivers are fixed */
88         if (!vfd->release)
89                 return;
90 #endif
91         vfd->release(vfd);
92 }
93
94 static struct class video_class = {
95         .name    = VIDEO_NAME,
96         .release = video_release,
97 };
98
99 /*
100  *      Active devices
101  */
102
103 static struct video_device *video_device[VIDEO_NUM_DEVICES];
104 static DEFINE_MUTEX(videodev_lock);
105
106 struct video_device* video_devdata(struct file *file)
107 {
108         return video_device[iminor(file->f_path.dentry->d_inode)];
109 }
110
111 /*
112  *      Open a video device - FIXME: Obsoleted
113  */
114 static int video_open(struct inode *inode, struct file *file)
115 {
116         unsigned int minor = iminor(inode);
117         int err = 0;
118         struct video_device *vfl;
119         const struct file_operations *old_fops;
120
121         if(minor>=VIDEO_NUM_DEVICES)
122                 return -ENODEV;
123         mutex_lock(&videodev_lock);
124         vfl=video_device[minor];
125         if(vfl==NULL) {
126                 mutex_unlock(&videodev_lock);
127                 request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
128                 mutex_lock(&videodev_lock);
129                 vfl=video_device[minor];
130                 if (vfl==NULL) {
131                         mutex_unlock(&videodev_lock);
132                         return -ENODEV;
133                 }
134         }
135         old_fops = file->f_op;
136         file->f_op = fops_get(vfl->fops);
137         if(file->f_op->open)
138                 err = file->f_op->open(inode,file);
139         if (err) {
140                 fops_put(file->f_op);
141                 file->f_op = fops_get(old_fops);
142         }
143         fops_put(old_fops);
144         mutex_unlock(&videodev_lock);
145         return err;
146 }
147
148 /*
149  * helper function -- handles userspace copying for ioctl arguments
150  */
151
152 #ifdef __OLD_VIDIOC_
153 static unsigned int
154 video_fix_command(unsigned int cmd)
155 {
156         switch (cmd) {
157         case VIDIOC_OVERLAY_OLD:
158                 cmd = VIDIOC_OVERLAY;
159                 break;
160         case VIDIOC_S_PARM_OLD:
161                 cmd = VIDIOC_S_PARM;
162                 break;
163         case VIDIOC_S_CTRL_OLD:
164                 cmd = VIDIOC_S_CTRL;
165                 break;
166         case VIDIOC_G_AUDIO_OLD:
167                 cmd = VIDIOC_G_AUDIO;
168                 break;
169         case VIDIOC_G_AUDOUT_OLD:
170                 cmd = VIDIOC_G_AUDOUT;
171                 break;
172         case VIDIOC_CROPCAP_OLD:
173                 cmd = VIDIOC_CROPCAP;
174                 break;
175         }
176         return cmd;
177 }
178 #endif
179
180 /*
181  * Obsolete usercopy function - Should be removed soon
182  */
183 int
184 video_usercopy(struct inode *inode, struct file *file,
185                unsigned int cmd, unsigned long arg,
186                int (*func)(struct inode *inode, struct file *file,
187                            unsigned int cmd, void *arg))
188 {
189         char    sbuf[128];
190         void    *mbuf = NULL;
191         void    *parg = NULL;
192         int     err  = -EINVAL;
193         int     is_ext_ctrl;
194         size_t  ctrls_size = 0;
195         void __user *user_ptr = NULL;
196
197 #ifdef __OLD_VIDIOC_
198         cmd = video_fix_command(cmd);
199 #endif
200         is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
201                        cmd == VIDIOC_TRY_EXT_CTRLS);
202
203         /*  Copy arguments into temp kernel buffer  */
204         switch (_IOC_DIR(cmd)) {
205         case _IOC_NONE:
206                 parg = NULL;
207                 break;
208         case _IOC_READ:
209         case _IOC_WRITE:
210         case (_IOC_WRITE | _IOC_READ):
211                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
212                         parg = sbuf;
213                 } else {
214                         /* too big to allocate from stack */
215                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
216                         if (NULL == mbuf)
217                                 return -ENOMEM;
218                         parg = mbuf;
219                 }
220
221                 err = -EFAULT;
222                 if (_IOC_DIR(cmd) & _IOC_WRITE)
223                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
224                                 goto out;
225                 break;
226         }
227         if (is_ext_ctrl) {
228                 struct v4l2_ext_controls *p = parg;
229
230                 /* In case of an error, tell the caller that it wasn't
231                    a specific control that caused it. */
232                 p->error_idx = p->count;
233                 user_ptr = (void __user *)p->controls;
234                 if (p->count) {
235                         ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
236                         /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
237                         mbuf = kmalloc(ctrls_size, GFP_KERNEL);
238                         err = -ENOMEM;
239                         if (NULL == mbuf)
240                                 goto out_ext_ctrl;
241                         err = -EFAULT;
242                         if (copy_from_user(mbuf, user_ptr, ctrls_size))
243                                 goto out_ext_ctrl;
244                         p->controls = mbuf;
245                 }
246         }
247
248         /* call driver */
249         err = func(inode, file, cmd, parg);
250         if (err == -ENOIOCTLCMD)
251                 err = -EINVAL;
252         if (is_ext_ctrl) {
253                 struct v4l2_ext_controls *p = parg;
254
255                 p->controls = (void *)user_ptr;
256                 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
257                         err = -EFAULT;
258                 goto out_ext_ctrl;
259         }
260         if (err < 0)
261                 goto out;
262
263 out_ext_ctrl:
264         /*  Copy results into user buffer  */
265         switch (_IOC_DIR(cmd))
266         {
267         case _IOC_READ:
268         case (_IOC_WRITE | _IOC_READ):
269                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
270                         err = -EFAULT;
271                 break;
272         }
273
274 out:
275         kfree(mbuf);
276         return err;
277 }
278
279 /*
280  * open/release helper functions -- handle exclusive opens
281  * Should be removed soon
282  */
283 int video_exclusive_open(struct inode *inode, struct file *file)
284 {
285         struct  video_device *vfl = video_devdata(file);
286         int retval = 0;
287
288         mutex_lock(&vfl->lock);
289         if (vfl->users) {
290                 retval = -EBUSY;
291         } else {
292                 vfl->users++;
293         }
294         mutex_unlock(&vfl->lock);
295         return retval;
296 }
297
298 int video_exclusive_release(struct inode *inode, struct file *file)
299 {
300         struct  video_device *vfl = video_devdata(file);
301
302         vfl->users--;
303         return 0;
304 }
305
306 static char *v4l2_memory_names[] = {
307         [V4L2_MEMORY_MMAP]    = "mmap",
308         [V4L2_MEMORY_USERPTR] = "userptr",
309         [V4L2_MEMORY_OVERLAY] = "overlay",
310 };
311
312
313 /* FIXME: Those stuff are replicated also on v4l2-common.c */
314 static char *v4l2_type_names_FIXME[] = {
315         [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "video-cap",
316         [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "video-over",
317         [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "video-out",
318         [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
319         [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
320         [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
321         [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",
322         [V4L2_BUF_TYPE_PRIVATE]            = "private",
323 };
324
325 static char *v4l2_field_names_FIXME[] = {
326         [V4L2_FIELD_ANY]        = "any",
327         [V4L2_FIELD_NONE]       = "none",
328         [V4L2_FIELD_TOP]        = "top",
329         [V4L2_FIELD_BOTTOM]     = "bottom",
330         [V4L2_FIELD_INTERLACED] = "interlaced",
331         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
332         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
333         [V4L2_FIELD_ALTERNATE]  = "alternate",
334 };
335
336 #define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
337
338 static void dbgbuf(unsigned int cmd, struct video_device *vfd,
339                                         struct v4l2_buffer *p)
340 {
341         struct v4l2_timecode *tc=&p->timecode;
342
343         dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
344                 "bytesused=%d, flags=0x%08d, "
345                 "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n",
346                         (p->timestamp.tv_sec/3600),
347                         (int)(p->timestamp.tv_sec/60)%60,
348                         (int)(p->timestamp.tv_sec%60),
349                         p->timestamp.tv_usec,
350                         p->index,
351                         prt_names(p->type,v4l2_type_names_FIXME),
352                         p->bytesused,p->flags,
353                         p->field,p->sequence,
354                         prt_names(p->memory,v4l2_memory_names),
355                         p->m.userptr, p->length);
356         dbgarg2 ("timecode= %02d:%02d:%02d type=%d, "
357                 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
358                         tc->hours,tc->minutes,tc->seconds,
359                         tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
360 }
361
362 static inline void dbgrect(struct video_device *vfd, char *s,
363                                                         struct v4l2_rect *r)
364 {
365         dbgarg2 ("%sRect start at %dx%d, size= %dx%d\n", s, r->left, r->top,
366                                                 r->width, r->height);
367 };
368
369 static inline void v4l_print_pix_fmt (struct video_device *vfd,
370                                                 struct v4l2_pix_format *fmt)
371 {
372         dbgarg2 ("width=%d, height=%d, format=%c%c%c%c, field=%s, "
373                 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
374                 fmt->width,fmt->height,
375                 (fmt->pixelformat & 0xff),
376                 (fmt->pixelformat >>  8) & 0xff,
377                 (fmt->pixelformat >> 16) & 0xff,
378                 (fmt->pixelformat >> 24) & 0xff,
379                 prt_names(fmt->field,v4l2_field_names_FIXME),
380                 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
381 };
382
383
384 static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
385 {
386         switch (type) {
387         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
388                 if (vfd->vidioc_try_fmt_cap)
389                         return (0);
390                 break;
391         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
392                 if (vfd->vidioc_try_fmt_overlay)
393                         return (0);
394                 break;
395         case V4L2_BUF_TYPE_VBI_CAPTURE:
396                 if (vfd->vidioc_try_fmt_vbi)
397                         return (0);
398                 break;
399         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
400                 if (vfd->vidioc_try_fmt_vbi_output)
401                         return (0);
402                 break;
403         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
404                 if (vfd->vidioc_try_fmt_vbi_capture)
405                         return (0);
406                 break;
407         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
408                 if (vfd->vidioc_try_fmt_video_output)
409                         return (0);
410                 break;
411         case V4L2_BUF_TYPE_VBI_OUTPUT:
412                 if (vfd->vidioc_try_fmt_vbi_output)
413                         return (0);
414                 break;
415         case V4L2_BUF_TYPE_PRIVATE:
416                 if (vfd->vidioc_try_fmt_type_private)
417                         return (0);
418                 break;
419         }
420         return (-EINVAL);
421 }
422
423 static int __video_do_ioctl(struct inode *inode, struct file *file,
424                 unsigned int cmd, void *arg)
425 {
426         struct video_device *vfd = video_devdata(file);
427         void                 *fh = file->private_data;
428         int                  ret = -EINVAL;
429
430         if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
431                                 !(vfd->debug | V4L2_DEBUG_IOCTL_ARG)) {
432                 v4l_print_ioctl(vfd->name, cmd);
433         }
434
435         if (_IOC_TYPE(cmd)=='v')
436                 return v4l_compat_translate_ioctl(inode,file,cmd,arg,
437                                                 __video_do_ioctl);
438
439         switch(cmd) {
440         /* --- capabilities ------------------------------------------ */
441         case VIDIOC_QUERYCAP:
442         {
443                 struct v4l2_capability *cap = (struct v4l2_capability*)arg;
444                 memset(cap, 0, sizeof(*cap));
445
446                 if (!vfd->vidioc_querycap)
447                         break;
448
449                 ret=vfd->vidioc_querycap(file, fh, cap);
450                 if (!ret)
451                         dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
452                                         "version=0x%08x, "
453                                         "capabilities=0x%08x\n",
454                                         cap->driver,cap->card,cap->bus_info,
455                                         cap->version,
456                                         cap->capabilities);
457                 break;
458         }
459
460         /* --- priority ------------------------------------------ */
461         case VIDIOC_G_PRIORITY:
462         {
463                 enum v4l2_priority *p=arg;
464
465                 if (!vfd->vidioc_g_priority)
466                         break;
467                 ret=vfd->vidioc_g_priority(file, fh, p);
468                 if (!ret)
469                         dbgarg(cmd, "priority is %d\n", *p);
470                 break;
471         }
472         case VIDIOC_S_PRIORITY:
473         {
474                 enum v4l2_priority *p=arg;
475
476                 if (!vfd->vidioc_s_priority)
477                         break;
478                 dbgarg(cmd, "setting priority to %d\n", *p);
479                 ret=vfd->vidioc_s_priority(file, fh, *p);
480                 break;
481         }
482
483         /* --- capture ioctls ---------------------------------------- */
484         case VIDIOC_ENUM_FMT:
485         {
486                 struct v4l2_fmtdesc *f = arg;
487                 enum v4l2_buf_type type;
488                 unsigned int index;
489
490                 index = f->index;
491                 type  = f->type;
492                 memset(f,0,sizeof(*f));
493                 f->index = index;
494                 f->type  = type;
495
496                 switch (type) {
497                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
498                         if (vfd->vidioc_enum_fmt_cap)
499                                 ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
500                         break;
501                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
502                         if (vfd->vidioc_enum_fmt_overlay)
503                                 ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
504                         break;
505                 case V4L2_BUF_TYPE_VBI_CAPTURE:
506                         if (vfd->vidioc_enum_fmt_vbi)
507                                 ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
508                         break;
509                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
510                         if (vfd->vidioc_enum_fmt_vbi_output)
511                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
512                                                                 fh, f);
513                         break;
514                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
515                         if (vfd->vidioc_enum_fmt_vbi_capture)
516                                 ret=vfd->vidioc_enum_fmt_vbi_capture(file,
517                                                                 fh, f);
518                         break;
519                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
520                         if (vfd->vidioc_enum_fmt_video_output)
521                                 ret=vfd->vidioc_enum_fmt_video_output(file,
522                                                                 fh, f);
523                         break;
524                 case V4L2_BUF_TYPE_VBI_OUTPUT:
525                         if (vfd->vidioc_enum_fmt_vbi_output)
526                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
527                                                                 fh, f);
528                         break;
529                 case V4L2_BUF_TYPE_PRIVATE:
530                         if (vfd->vidioc_enum_fmt_type_private)
531                                 ret=vfd->vidioc_enum_fmt_type_private(file,
532                                                                 fh, f);
533                         break;
534                 }
535                 if (!ret)
536                         dbgarg (cmd, "index=%d, type=%d, flags=%d, "
537                                         "pixelformat=%c%c%c%c, description='%s'\n",
538                                         f->index, f->type, f->flags,
539                                         (f->pixelformat & 0xff),
540                                         (f->pixelformat >>  8) & 0xff,
541                                         (f->pixelformat >> 16) & 0xff,
542                                         (f->pixelformat >> 24) & 0xff,
543                                         f->description);
544                 break;
545         }
546         case VIDIOC_G_FMT:
547         {
548                 struct v4l2_format *f = (struct v4l2_format *)arg;
549                 enum v4l2_buf_type type=f->type;
550
551                 memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
552                 f->type=type;
553
554                 /* FIXME: Should be one dump per type */
555                 dbgarg (cmd, "type=%s\n", prt_names(type,
556                                         v4l2_type_names_FIXME));
557
558                 switch (type) {
559                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
560                         if (vfd->vidioc_g_fmt_cap)
561                                 ret=vfd->vidioc_g_fmt_cap(file, fh, f);
562                         if (!ret)
563                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
564                         break;
565                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
566                         if (vfd->vidioc_g_fmt_overlay)
567                                 ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
568                         break;
569                 case V4L2_BUF_TYPE_VBI_CAPTURE:
570                         if (vfd->vidioc_g_fmt_vbi)
571                                 ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
572                         break;
573                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
574                         if (vfd->vidioc_g_fmt_vbi_output)
575                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
576                         break;
577                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
578                         if (vfd->vidioc_g_fmt_vbi_capture)
579                                 ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
580                         break;
581                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
582                         if (vfd->vidioc_g_fmt_video_output)
583                                 ret=vfd->vidioc_g_fmt_video_output(file,
584                                                                 fh, f);
585                         break;
586                 case V4L2_BUF_TYPE_VBI_OUTPUT:
587                         if (vfd->vidioc_g_fmt_vbi_output)
588                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
589                         break;
590                 case V4L2_BUF_TYPE_PRIVATE:
591                         if (vfd->vidioc_g_fmt_type_private)
592                                 ret=vfd->vidioc_g_fmt_type_private(file,
593                                                                 fh, f);
594                         break;
595                 }
596
597                 break;
598         }
599         case VIDIOC_S_FMT:
600         {
601                 struct v4l2_format *f = (struct v4l2_format *)arg;
602
603                 /* FIXME: Should be one dump per type */
604                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
605                                         v4l2_type_names_FIXME));
606
607                 switch (f->type) {
608                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
609                         v4l_print_pix_fmt(vfd,&f->fmt.pix);
610                         if (vfd->vidioc_s_fmt_cap)
611                                 ret=vfd->vidioc_s_fmt_cap(file, fh, f);
612                         break;
613                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
614                         if (vfd->vidioc_s_fmt_overlay)
615                                 ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
616                         break;
617                 case V4L2_BUF_TYPE_VBI_CAPTURE:
618                         if (vfd->vidioc_s_fmt_vbi)
619                                 ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
620                         break;
621                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
622                         if (vfd->vidioc_s_fmt_vbi_output)
623                                 ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
624                         break;
625                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
626                         if (vfd->vidioc_s_fmt_vbi_capture)
627                                 ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
628                         break;
629                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
630                         if (vfd->vidioc_s_fmt_video_output)
631                                 ret=vfd->vidioc_s_fmt_video_output(file,
632                                                                 fh, f);
633                         break;
634                 case V4L2_BUF_TYPE_VBI_OUTPUT:
635                         if (vfd->vidioc_s_fmt_vbi_output)
636                                 ret=vfd->vidioc_s_fmt_vbi_output(file,
637                                                                 fh, f);
638                         break;
639                 case V4L2_BUF_TYPE_PRIVATE:
640                         if (vfd->vidioc_s_fmt_type_private)
641                                 ret=vfd->vidioc_s_fmt_type_private(file,
642                                                                 fh, f);
643                         break;
644                 }
645                 break;
646         }
647         case VIDIOC_TRY_FMT:
648         {
649                 struct v4l2_format *f = (struct v4l2_format *)arg;
650
651                 /* FIXME: Should be one dump per type */
652                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
653                                                 v4l2_type_names_FIXME));
654                 switch (f->type) {
655                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
656                         if (vfd->vidioc_try_fmt_cap)
657                                 ret=vfd->vidioc_try_fmt_cap(file, fh, f);
658                         if (!ret)
659                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
660                         break;
661                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
662                         if (vfd->vidioc_try_fmt_overlay)
663                                 ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
664                         break;
665                 case V4L2_BUF_TYPE_VBI_CAPTURE:
666                         if (vfd->vidioc_try_fmt_vbi)
667                                 ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
668                         break;
669                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
670                         if (vfd->vidioc_try_fmt_vbi_output)
671                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
672                                                                 fh, f);
673                         break;
674                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
675                         if (vfd->vidioc_try_fmt_vbi_capture)
676                                 ret=vfd->vidioc_try_fmt_vbi_capture(file,
677                                                                 fh, f);
678                         break;
679                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
680                         if (vfd->vidioc_try_fmt_video_output)
681                                 ret=vfd->vidioc_try_fmt_video_output(file,
682                                                                 fh, f);
683                         break;
684                 case V4L2_BUF_TYPE_VBI_OUTPUT:
685                         if (vfd->vidioc_try_fmt_vbi_output)
686                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
687                                                                 fh, f);
688                         break;
689                 case V4L2_BUF_TYPE_PRIVATE:
690                         if (vfd->vidioc_try_fmt_type_private)
691                                 ret=vfd->vidioc_try_fmt_type_private(file,
692                                                                 fh, f);
693                         break;
694                 }
695
696                 break;
697         }
698         /* FIXME: Those buf reqs could be handled here,
699            with some changes on videobuf to allow its header to be included at
700            videodev2.h or being merged at videodev2.
701          */
702         case VIDIOC_REQBUFS:
703         {
704                 struct v4l2_requestbuffers *p=arg;
705
706                 if (!vfd->vidioc_reqbufs)
707                         break;
708                 ret = check_fmt (vfd, p->type);
709                 if (ret)
710                         break;
711
712                 ret=vfd->vidioc_reqbufs(file, fh, p);
713                 dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
714                                 p->count,
715                                 prt_names(p->type,v4l2_type_names_FIXME),
716                                 prt_names(p->memory,v4l2_memory_names));
717                 break;
718         }
719         case VIDIOC_QUERYBUF:
720         {
721                 struct v4l2_buffer *p=arg;
722
723                 if (!vfd->vidioc_querybuf)
724                         break;
725                 ret = check_fmt (vfd, p->type);
726                 if (ret)
727                         break;
728
729                 ret=vfd->vidioc_querybuf(file, fh, p);
730                 if (!ret)
731                         dbgbuf(cmd,vfd,p);
732                 break;
733         }
734         case VIDIOC_QBUF:
735         {
736                 struct v4l2_buffer *p=arg;
737
738                 if (!vfd->vidioc_qbuf)
739                         break;
740                 ret = check_fmt (vfd, p->type);
741                 if (ret)
742                         break;
743
744                 ret=vfd->vidioc_qbuf(file, fh, p);
745                 if (!ret)
746                         dbgbuf(cmd,vfd,p);
747                 break;
748         }
749         case VIDIOC_DQBUF:
750         {
751                 struct v4l2_buffer *p=arg;
752                 if (!vfd->vidioc_dqbuf)
753                         break;
754                 ret = check_fmt (vfd, p->type);
755                 if (ret)
756                         break;
757
758                 ret=vfd->vidioc_dqbuf(file, fh, p);
759                 if (!ret)
760                         dbgbuf(cmd,vfd,p);
761                 break;
762         }
763         case VIDIOC_OVERLAY:
764         {
765                 int *i = arg;
766
767                 if (!vfd->vidioc_overlay)
768                         break;
769                 dbgarg (cmd, "value=%d\n",*i);
770                 ret=vfd->vidioc_overlay(file, fh, *i);
771                 break;
772         }
773 #ifdef CONFIG_VIDEO_V4L1_COMPAT
774         /* --- streaming capture ------------------------------------- */
775         case VIDIOCGMBUF:
776         {
777                 struct video_mbuf *p=arg;
778
779                 memset(p,0,sizeof(p));
780
781                 if (!vfd->vidiocgmbuf)
782                         break;
783                 ret=vfd->vidiocgmbuf(file, fh, p);
784                 if (!ret)
785                         dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
786                                                 p->size, p->frames,
787                                                 (unsigned long)p->offsets);
788                 break;
789         }
790 #endif
791         case VIDIOC_G_FBUF:
792         {
793                 struct v4l2_framebuffer *p=arg;
794                 if (!vfd->vidioc_g_fbuf)
795                         break;
796                 ret=vfd->vidioc_g_fbuf(file, fh, arg);
797                 if (!ret) {
798                         dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
799                                         p->capability,p->flags,
800                                         (unsigned long)p->base);
801                         v4l_print_pix_fmt (vfd, &p->fmt);
802                 }
803                 break;
804         }
805         case VIDIOC_S_FBUF:
806         {
807                 struct v4l2_framebuffer *p=arg;
808                 if (!vfd->vidioc_s_fbuf)
809                         break;
810
811                 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
812                                 p->capability,p->flags,(unsigned long)p->base);
813                 v4l_print_pix_fmt (vfd, &p->fmt);
814                 ret=vfd->vidioc_s_fbuf(file, fh, arg);
815
816                 break;
817         }
818         case VIDIOC_STREAMON:
819         {
820                 enum v4l2_buf_type i = *(int *)arg;
821                 if (!vfd->vidioc_streamon)
822                         break;
823                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
824                 ret=vfd->vidioc_streamon(file, fh,i);
825                 break;
826         }
827         case VIDIOC_STREAMOFF:
828         {
829                 enum v4l2_buf_type i = *(int *)arg;
830
831                 if (!vfd->vidioc_streamoff)
832                         break;
833                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
834                 ret=vfd->vidioc_streamoff(file, fh, i);
835                 break;
836         }
837         /* ---------- tv norms ---------- */
838         case VIDIOC_ENUMSTD:
839         {
840                 struct v4l2_standard *p = arg;
841                 v4l2_std_id id = vfd->tvnorms,curr_id=0;
842                 unsigned int index = p->index,i;
843
844                 if (index<0) {
845                         ret=-EINVAL;
846                         break;
847                 }
848
849                 /* Return norm array on a canonical way */
850                 for (i=0;i<= index && id; i++) {
851                         if ( (id & V4L2_STD_PAL) == V4L2_STD_PAL) {
852                                 curr_id = V4L2_STD_PAL;
853                         } else if ( (id & V4L2_STD_PAL_BG) == V4L2_STD_PAL_BG) {
854                                 curr_id = V4L2_STD_PAL_BG;
855                         } else if ( (id & V4L2_STD_PAL_DK) == V4L2_STD_PAL_DK) {
856                                 curr_id = V4L2_STD_PAL_DK;
857                         } else if ( (id & V4L2_STD_PAL_B) == V4L2_STD_PAL_B) {
858                                 curr_id = V4L2_STD_PAL_B;
859                         } else if ( (id & V4L2_STD_PAL_B1) == V4L2_STD_PAL_B1) {
860                                 curr_id = V4L2_STD_PAL_B1;
861                         } else if ( (id & V4L2_STD_PAL_G) == V4L2_STD_PAL_G) {
862                                 curr_id = V4L2_STD_PAL_G;
863                         } else if ( (id & V4L2_STD_PAL_H) == V4L2_STD_PAL_H) {
864                                 curr_id = V4L2_STD_PAL_H;
865                         } else if ( (id & V4L2_STD_PAL_I) == V4L2_STD_PAL_I) {
866                                 curr_id = V4L2_STD_PAL_I;
867                         } else if ( (id & V4L2_STD_PAL_D) == V4L2_STD_PAL_D) {
868                                 curr_id = V4L2_STD_PAL_D;
869                         } else if ( (id & V4L2_STD_PAL_D1) == V4L2_STD_PAL_D1) {
870                                 curr_id = V4L2_STD_PAL_D1;
871                         } else if ( (id & V4L2_STD_PAL_K) == V4L2_STD_PAL_K) {
872                                 curr_id = V4L2_STD_PAL_K;
873                         } else if ( (id & V4L2_STD_PAL_M) == V4L2_STD_PAL_M) {
874                                 curr_id = V4L2_STD_PAL_M;
875                         } else if ( (id & V4L2_STD_PAL_N) == V4L2_STD_PAL_N) {
876                                 curr_id = V4L2_STD_PAL_N;
877                         } else if ( (id & V4L2_STD_PAL_Nc) == V4L2_STD_PAL_Nc) {
878                                 curr_id = V4L2_STD_PAL_Nc;
879                         } else if ( (id & V4L2_STD_PAL_60) == V4L2_STD_PAL_60) {
880                                 curr_id = V4L2_STD_PAL_60;
881                         } else if ( (id & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
882                                 curr_id = V4L2_STD_NTSC;
883                         } else if ( (id & V4L2_STD_NTSC_M) == V4L2_STD_NTSC_M) {
884                                 curr_id = V4L2_STD_NTSC_M;
885                         } else if ( (id & V4L2_STD_NTSC_M_JP) == V4L2_STD_NTSC_M_JP) {
886                                 curr_id = V4L2_STD_NTSC_M_JP;
887                         } else if ( (id & V4L2_STD_NTSC_443) == V4L2_STD_NTSC_443) {
888                                 curr_id = V4L2_STD_NTSC_443;
889                         } else if ( (id & V4L2_STD_NTSC_M_KR) == V4L2_STD_NTSC_M_KR) {
890                                 curr_id = V4L2_STD_NTSC_M_KR;
891                         } else if ( (id & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
892                                 curr_id = V4L2_STD_SECAM;
893                         } else if ( (id & V4L2_STD_SECAM_DK) == V4L2_STD_SECAM_DK) {
894                                 curr_id = V4L2_STD_SECAM_DK;
895                         } else if ( (id & V4L2_STD_SECAM_B) == V4L2_STD_SECAM_B) {
896                                 curr_id = V4L2_STD_SECAM_B;
897                         } else if ( (id & V4L2_STD_SECAM_D) == V4L2_STD_SECAM_D) {
898                                 curr_id = V4L2_STD_SECAM_D;
899                         } else if ( (id & V4L2_STD_SECAM_G) == V4L2_STD_SECAM_G) {
900                                 curr_id = V4L2_STD_SECAM_G;
901                         } else if ( (id & V4L2_STD_SECAM_H) == V4L2_STD_SECAM_H) {
902                                 curr_id = V4L2_STD_SECAM_H;
903                         } else if ( (id & V4L2_STD_SECAM_K) == V4L2_STD_SECAM_K) {
904                                 curr_id = V4L2_STD_SECAM_K;
905                         } else if ( (id & V4L2_STD_SECAM_K1) == V4L2_STD_SECAM_K1) {
906                                 curr_id = V4L2_STD_SECAM_K1;
907                         } else if ( (id & V4L2_STD_SECAM_L) == V4L2_STD_SECAM_L) {
908                                 curr_id = V4L2_STD_SECAM_L;
909                         } else if ( (id & V4L2_STD_SECAM_LC) == V4L2_STD_SECAM_LC) {
910                                 curr_id = V4L2_STD_SECAM_LC;
911                         } else {
912                                 break;
913                         }
914                         id &= ~curr_id;
915                 }
916                 if (i<=index)
917                         return -EINVAL;
918
919                 v4l2_video_std_construct(p, curr_id,v4l2_norm_to_name(curr_id));
920                 p->index = index;
921
922                 dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
923                                 "framelines=%d\n", p->index,
924                                 (unsigned long long)p->id, p->name,
925                                 p->frameperiod.numerator,
926                                 p->frameperiod.denominator,
927                                 p->framelines);
928
929                 ret=0;
930                 break;
931         }
932         case VIDIOC_G_STD:
933         {
934                 v4l2_std_id *id = arg;
935
936                 *id = vfd->current_norm;
937
938                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
939
940                 ret=0;
941                 break;
942         }
943         case VIDIOC_S_STD:
944         {
945                 v4l2_std_id *id = arg,norm;
946
947                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
948
949                 norm = (*id) & vfd->tvnorms;
950                 if ( vfd->tvnorms && !norm)     /* Check if std is supported */
951                         break;
952
953                 /* Calls the specific handler */
954                 if (vfd->vidioc_s_std)
955                         ret=vfd->vidioc_s_std(file, fh, &norm);
956                 else
957                         ret=-EINVAL;
958
959                 /* Updates standard information */
960                 if (ret>=0)
961                         vfd->current_norm=norm;
962
963                 break;
964         }
965         case VIDIOC_QUERYSTD:
966         {
967                 v4l2_std_id *p=arg;
968
969                 if (!vfd->vidioc_querystd)
970                         break;
971                 ret=vfd->vidioc_querystd(file, fh, arg);
972                 if (!ret)
973                         dbgarg (cmd, "detected std=%Lu\n",
974                                                 (unsigned long long)*p);
975                 break;
976         }
977         /* ------ input switching ---------- */
978         /* FIXME: Inputs can be handled inside videodev2 */
979         case VIDIOC_ENUMINPUT:
980         {
981                 struct v4l2_input *p=arg;
982                 int i=p->index;
983
984                 if (!vfd->vidioc_enum_input)
985                         break;
986                 memset(p, 0, sizeof(*p));
987                 p->index=i;
988
989                 ret=vfd->vidioc_enum_input(file, fh, p);
990                 if (!ret)
991                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
992                                         "audioset=%d, "
993                                         "tuner=%d, std=%Ld, status=%d\n",
994                                         p->index,p->name,p->type,p->audioset,
995                                         p->tuner,
996                                         (unsigned long long)p->std,
997                                         p->status);
998                 break;
999         }
1000         case VIDIOC_G_INPUT:
1001         {
1002                 unsigned int *i = arg;
1003
1004                 if (!vfd->vidioc_g_input)
1005                         break;
1006                 ret=vfd->vidioc_g_input(file, fh, i);
1007                 if (!ret)
1008                         dbgarg (cmd, "value=%d\n",*i);
1009                 break;
1010         }
1011         case VIDIOC_S_INPUT:
1012         {
1013                 unsigned int *i = arg;
1014
1015                 if (!vfd->vidioc_s_input)
1016                         break;
1017                 dbgarg (cmd, "value=%d\n",*i);
1018                 ret=vfd->vidioc_s_input(file, fh, *i);
1019                 break;
1020         }
1021
1022         /* ------ output switching ---------- */
1023         case VIDIOC_G_OUTPUT:
1024         {
1025                 unsigned int *i = arg;
1026
1027                 if (!vfd->vidioc_g_output)
1028                         break;
1029                 ret=vfd->vidioc_g_output(file, fh, i);
1030                 if (!ret)
1031                         dbgarg (cmd, "value=%d\n",*i);
1032                 break;
1033         }
1034         case VIDIOC_S_OUTPUT:
1035         {
1036                 unsigned int *i = arg;
1037
1038                 if (!vfd->vidioc_s_output)
1039                         break;
1040                 dbgarg (cmd, "value=%d\n",*i);
1041                 ret=vfd->vidioc_s_output(file, fh, *i);
1042                 break;
1043         }
1044
1045         /* --- controls ---------------------------------------------- */
1046         case VIDIOC_QUERYCTRL:
1047         {
1048                 struct v4l2_queryctrl *p=arg;
1049
1050                 if (!vfd->vidioc_queryctrl)
1051                         break;
1052                 ret=vfd->vidioc_queryctrl(file, fh, p);
1053
1054                 if (!ret)
1055                         dbgarg (cmd, "id=%d, type=%d, name=%s, "
1056                                         "min/max=%d/%d,"
1057                                         " step=%d, default=%d, flags=0x%08x\n",
1058                                         p->id,p->type,p->name,p->minimum,
1059                                         p->maximum,p->step,p->default_value,
1060                                         p->flags);
1061                 break;
1062         }
1063         case VIDIOC_G_CTRL:
1064         {
1065                 struct v4l2_control *p = arg;
1066
1067                 if (!vfd->vidioc_g_ctrl)
1068                         break;
1069                 dbgarg(cmd, "Enum for index=%d\n", p->id);
1070
1071                 ret=vfd->vidioc_g_ctrl(file, fh, p);
1072                 if (!ret)
1073                         dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
1074                 break;
1075         }
1076         case VIDIOC_S_CTRL:
1077         {
1078                 struct v4l2_control *p = arg;
1079
1080                 if (!vfd->vidioc_s_ctrl)
1081                         break;
1082                 dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
1083
1084                 ret=vfd->vidioc_s_ctrl(file, fh, p);
1085                 break;
1086         }
1087         case VIDIOC_G_EXT_CTRLS:
1088         {
1089                 struct v4l2_ext_controls *p = arg;
1090
1091                 if (vfd->vidioc_g_ext_ctrls) {
1092                         dbgarg(cmd, "count=%d\n", p->count);
1093
1094                         ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
1095                 }
1096                 break;
1097         }
1098         case VIDIOC_S_EXT_CTRLS:
1099         {
1100                 struct v4l2_ext_controls *p = arg;
1101
1102                 if (vfd->vidioc_s_ext_ctrls) {
1103                         dbgarg(cmd, "count=%d\n", p->count);
1104
1105                         ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
1106                 }
1107                 break;
1108         }
1109         case VIDIOC_TRY_EXT_CTRLS:
1110         {
1111                 struct v4l2_ext_controls *p = arg;
1112
1113                 if (vfd->vidioc_try_ext_ctrls) {
1114                         dbgarg(cmd, "count=%d\n", p->count);
1115
1116                         ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
1117                 }
1118                 break;
1119         }
1120         case VIDIOC_QUERYMENU:
1121         {
1122                 struct v4l2_querymenu *p=arg;
1123                 if (!vfd->vidioc_querymenu)
1124                         break;
1125                 ret=vfd->vidioc_querymenu(file, fh, p);
1126                 if (!ret)
1127                         dbgarg (cmd, "id=%d, index=%d, name=%s\n",
1128                                                 p->id,p->index,p->name);
1129                 break;
1130         }
1131         /* --- audio ---------------------------------------------- */
1132         case VIDIOC_ENUMAUDIO:
1133         {
1134                 struct v4l2_audio *p=arg;
1135
1136                 if (!vfd->vidioc_enumaudio)
1137                         break;
1138                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1139                 ret=vfd->vidioc_enumaudio(file, fh, p);
1140                 if (!ret)
1141                         dbgarg2("index=%d, name=%s, capability=%d, "
1142                                         "mode=%d\n",p->index,p->name,
1143                                         p->capability, p->mode);
1144                 break;
1145         }
1146         case VIDIOC_G_AUDIO:
1147         {
1148                 struct v4l2_audio *p=arg;
1149                 __u32 index=p->index;
1150
1151                 if (!vfd->vidioc_g_audio)
1152                         break;
1153
1154                 memset(p,0,sizeof(*p));
1155                 p->index=index;
1156                 dbgarg(cmd, "Get for index=%d\n", p->index);
1157                 ret=vfd->vidioc_g_audio(file, fh, p);
1158                 if (!ret)
1159                         dbgarg2("index=%d, name=%s, capability=%d, "
1160                                         "mode=%d\n",p->index,
1161                                         p->name,p->capability, p->mode);
1162                 break;
1163         }
1164         case VIDIOC_S_AUDIO:
1165         {
1166                 struct v4l2_audio *p=arg;
1167
1168                 if (!vfd->vidioc_s_audio)
1169                         break;
1170                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1171                                         "mode=%d\n", p->index, p->name,
1172                                         p->capability, p->mode);
1173                 ret=vfd->vidioc_s_audio(file, fh, p);
1174                 break;
1175         }
1176         case VIDIOC_ENUMAUDOUT:
1177         {
1178                 struct v4l2_audioout *p=arg;
1179
1180                 if (!vfd->vidioc_enumaudout)
1181                         break;
1182                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1183                 ret=vfd->vidioc_enumaudout(file, fh, p);
1184                 if (!ret)
1185                         dbgarg2("index=%d, name=%s, capability=%d, "
1186                                         "mode=%d\n", p->index, p->name,
1187                                         p->capability,p->mode);
1188                 break;
1189         }
1190         case VIDIOC_G_AUDOUT:
1191         {
1192                 struct v4l2_audioout *p=arg;
1193
1194                 if (!vfd->vidioc_g_audout)
1195                         break;
1196                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1197                 ret=vfd->vidioc_g_audout(file, fh, p);
1198                 if (!ret)
1199                         dbgarg2("index=%d, name=%s, capability=%d, "
1200                                         "mode=%d\n", p->index, p->name,
1201                                         p->capability,p->mode);
1202                 break;
1203         }
1204         case VIDIOC_S_AUDOUT:
1205         {
1206                 struct v4l2_audioout *p=arg;
1207
1208                 if (!vfd->vidioc_s_audout)
1209                         break;
1210                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1211                                         "mode=%d\n", p->index, p->name,
1212                                         p->capability,p->mode);
1213
1214                 ret=vfd->vidioc_s_audout(file, fh, p);
1215                 break;
1216         }
1217         case VIDIOC_G_MODULATOR:
1218         {
1219                 struct v4l2_modulator *p=arg;
1220                 if (!vfd->vidioc_g_modulator)
1221                         break;
1222                 ret=vfd->vidioc_g_modulator(file, fh, p);
1223                 if (!ret)
1224                         dbgarg(cmd, "index=%d, name=%s, "
1225                                         "capability=%d, rangelow=%d,"
1226                                         " rangehigh=%d, txsubchans=%d\n",
1227                                         p->index, p->name,p->capability,
1228                                         p->rangelow, p->rangehigh,
1229                                         p->txsubchans);
1230                 break;
1231         }
1232         case VIDIOC_S_MODULATOR:
1233         {
1234                 struct v4l2_modulator *p=arg;
1235                 if (!vfd->vidioc_s_modulator)
1236                         break;
1237                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1238                                 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1239                                 p->index, p->name,p->capability,p->rangelow,
1240                                 p->rangehigh,p->txsubchans);
1241                         ret=vfd->vidioc_s_modulator(file, fh, p);
1242                 break;
1243         }
1244         case VIDIOC_G_CROP:
1245         {
1246                 struct v4l2_crop *p=arg;
1247                 if (!vfd->vidioc_g_crop)
1248                         break;
1249                 ret=vfd->vidioc_g_crop(file, fh, p);
1250                 if (!ret) {
1251                         dbgarg(cmd, "type=%d\n", p->type);
1252                         dbgrect(vfd, "", &p->c);
1253                 }
1254                 break;
1255         }
1256         case VIDIOC_S_CROP:
1257         {
1258                 struct v4l2_crop *p=arg;
1259                 if (!vfd->vidioc_s_crop)
1260                         break;
1261                 dbgarg(cmd, "type=%d\n", p->type);
1262                 dbgrect(vfd, "", &p->c);
1263                 ret=vfd->vidioc_s_crop(file, fh, p);
1264                 break;
1265         }
1266         case VIDIOC_CROPCAP:
1267         {
1268                 struct v4l2_cropcap *p=arg;
1269                 /*FIXME: Should also show v4l2_fract pixelaspect */
1270                 if (!vfd->vidioc_cropcap)
1271                         break;
1272                 dbgarg(cmd, "type=%d\n", p->type);
1273                 dbgrect(vfd, "bounds ", &p->bounds);
1274                 dbgrect(vfd, "defrect ", &p->defrect);
1275                 ret=vfd->vidioc_cropcap(file, fh, p);
1276                 break;
1277         }
1278         case VIDIOC_G_MPEGCOMP:
1279         {
1280                 struct v4l2_mpeg_compression *p=arg;
1281
1282                 /*FIXME: Several fields not shown */
1283                 if (!vfd->vidioc_g_mpegcomp)
1284                         break;
1285                 ret=vfd->vidioc_g_mpegcomp(file, fh, p);
1286                 if (!ret)
1287                         dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
1288                                         " ts_pid_video=%d, ts_pid_pcr=%d, "
1289                                         "ps_size=%d, au_sample_rate=%d, "
1290                                         "au_pesid=%c, vi_frame_rate=%d, "
1291                                         "vi_frames_per_gop=%d, "
1292                                         "vi_bframes_count=%d, vi_pesid=%c\n",
1293                                         p->ts_pid_pmt,p->ts_pid_audio,
1294                                         p->ts_pid_video,p->ts_pid_pcr,
1295                                         p->ps_size, p->au_sample_rate,
1296                                         p->au_pesid, p->vi_frame_rate,
1297                                         p->vi_frames_per_gop,
1298                                         p->vi_bframes_count, p->vi_pesid);
1299                 break;
1300         }
1301         case VIDIOC_S_MPEGCOMP:
1302         {
1303                 struct v4l2_mpeg_compression *p=arg;
1304                 /*FIXME: Several fields not shown */
1305                 if (!vfd->vidioc_s_mpegcomp)
1306                         break;
1307                 dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
1308                                 "ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
1309                                 "au_sample_rate=%d, au_pesid=%c, "
1310                                 "vi_frame_rate=%d, vi_frames_per_gop=%d, "
1311                                 "vi_bframes_count=%d, vi_pesid=%c\n",
1312                                 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
1313                                 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
1314                                 p->au_pesid, p->vi_frame_rate,
1315                                 p->vi_frames_per_gop, p->vi_bframes_count,
1316                                 p->vi_pesid);
1317                 ret=vfd->vidioc_s_mpegcomp(file, fh, p);
1318                 break;
1319         }
1320         case VIDIOC_G_JPEGCOMP:
1321         {
1322                 struct v4l2_jpegcompression *p=arg;
1323                 if (!vfd->vidioc_g_jpegcomp)
1324                         break;
1325                 ret=vfd->vidioc_g_jpegcomp(file, fh, p);
1326                 if (!ret)
1327                         dbgarg (cmd, "quality=%d, APPn=%d, "
1328                                                 "APP_len=%d, COM_len=%d, "
1329                                                 "jpeg_markers=%d\n",
1330                                                 p->quality,p->APPn,p->APP_len,
1331                                                 p->COM_len,p->jpeg_markers);
1332                 break;
1333         }
1334         case VIDIOC_S_JPEGCOMP:
1335         {
1336                 struct v4l2_jpegcompression *p=arg;
1337                 if (!vfd->vidioc_g_jpegcomp)
1338                         break;
1339                 dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
1340                                         "COM_len=%d, jpeg_markers=%d\n",
1341                                         p->quality,p->APPn,p->APP_len,
1342                                         p->COM_len,p->jpeg_markers);
1343                         ret=vfd->vidioc_s_jpegcomp(file, fh, p);
1344                 break;
1345         }
1346         case VIDIOC_G_PARM:
1347         {
1348                 struct v4l2_streamparm *p=arg;
1349                 if (vfd->vidioc_g_parm) {
1350                         ret=vfd->vidioc_g_parm(file, fh, p);
1351                 } else {
1352                         struct v4l2_standard s;
1353
1354                         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1355                                 return -EINVAL;
1356
1357                         v4l2_video_std_construct(&s, vfd->current_norm,
1358                                                  v4l2_norm_to_name(vfd->current_norm));
1359
1360                         memset(p,0,sizeof(*p));
1361
1362                         p->parm.capture.timeperframe = s.frameperiod;
1363                         ret=0;
1364                 }
1365
1366                 dbgarg (cmd, "type=%d\n", p->type);
1367                 break;
1368         }
1369         case VIDIOC_S_PARM:
1370         {
1371                 struct v4l2_streamparm *p=arg;
1372                 if (!vfd->vidioc_s_parm)
1373                         break;
1374                 dbgarg (cmd, "type=%d\n", p->type);
1375                 ret=vfd->vidioc_s_parm(file, fh, p);
1376                 break;
1377         }
1378         case VIDIOC_G_TUNER:
1379         {
1380                 struct v4l2_tuner *p=arg;
1381                 __u32 index=p->index;
1382
1383                 if (!vfd->vidioc_g_tuner)
1384                         break;
1385
1386                 memset(p,0,sizeof(*p));
1387                 p->index=index;
1388
1389                 ret=vfd->vidioc_g_tuner(file, fh, p);
1390                 if (!ret)
1391                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
1392                                         "capability=%d, rangelow=%d, "
1393                                         "rangehigh=%d, signal=%d, afc=%d, "
1394                                         "rxsubchans=%d, audmode=%d\n",
1395                                         p->index, p->name, p->type,
1396                                         p->capability, p->rangelow,
1397                                         p->rangehigh, p->rxsubchans,
1398                                         p->audmode, p->signal, p->afc);
1399                 break;
1400         }
1401         case VIDIOC_S_TUNER:
1402         {
1403                 struct v4l2_tuner *p=arg;
1404                 if (!vfd->vidioc_s_tuner)
1405                         break;
1406                 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1407                                 "capability=%d, rangelow=%d, rangehigh=%d, "
1408                                 "signal=%d, afc=%d, rxsubchans=%d, "
1409                                 "audmode=%d\n",p->index, p->name, p->type,
1410                                 p->capability, p->rangelow,p->rangehigh,
1411                                 p->rxsubchans, p->audmode, p->signal,
1412                                 p->afc);
1413                 ret=vfd->vidioc_s_tuner(file, fh, p);
1414                 break;
1415         }
1416         case VIDIOC_G_FREQUENCY:
1417         {
1418                 struct v4l2_frequency *p=arg;
1419                 if (!vfd->vidioc_g_frequency)
1420                         break;
1421
1422                 memset(p,0,sizeof(*p));
1423
1424                 ret=vfd->vidioc_g_frequency(file, fh, p);
1425                 if (!ret)
1426                         dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1427                                                 p->tuner,p->type,p->frequency);
1428                 break;
1429         }
1430         case VIDIOC_S_FREQUENCY:
1431         {
1432                 struct v4l2_frequency *p=arg;
1433                 if (!vfd->vidioc_s_frequency)
1434                         break;
1435                 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1436                                 p->tuner,p->type,p->frequency);
1437                 ret=vfd->vidioc_s_frequency(file, fh, p);
1438                 break;
1439         }
1440         case VIDIOC_G_SLICED_VBI_CAP:
1441         {
1442                 struct v4l2_sliced_vbi_cap *p=arg;
1443                 if (!vfd->vidioc_g_sliced_vbi_cap)
1444                         break;
1445                 ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
1446                 if (!ret)
1447                         dbgarg (cmd, "service_set=%d\n", p->service_set);
1448                 break;
1449         }
1450         case VIDIOC_LOG_STATUS:
1451         {
1452                 if (!vfd->vidioc_log_status)
1453                         break;
1454                 ret=vfd->vidioc_log_status(file, fh);
1455                 break;
1456         }
1457         } /* switch */
1458
1459         if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1460                 if (ret<0) {
1461                         printk ("%s: err:\n", vfd->name);
1462                         v4l_print_ioctl(vfd->name, cmd);
1463                 }
1464         }
1465
1466         return ret;
1467 }
1468
1469 int video_ioctl2 (struct inode *inode, struct file *file,
1470                unsigned int cmd, unsigned long arg)
1471 {
1472         char    sbuf[128];
1473         void    *mbuf = NULL;
1474         void    *parg = NULL;
1475         int     err  = -EINVAL;
1476         int     is_ext_ctrl;
1477         size_t  ctrls_size = 0;
1478         void __user *user_ptr = NULL;
1479
1480 #ifdef __OLD_VIDIOC_
1481         cmd = video_fix_command(cmd);
1482 #endif
1483         is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
1484                        cmd == VIDIOC_TRY_EXT_CTRLS);
1485
1486         /*  Copy arguments into temp kernel buffer  */
1487         switch (_IOC_DIR(cmd)) {
1488         case _IOC_NONE:
1489                 parg = NULL;
1490                 break;
1491         case _IOC_READ:
1492         case _IOC_WRITE:
1493         case (_IOC_WRITE | _IOC_READ):
1494                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1495                         parg = sbuf;
1496                 } else {
1497                         /* too big to allocate from stack */
1498                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
1499                         if (NULL == mbuf)
1500                                 return -ENOMEM;
1501                         parg = mbuf;
1502                 }
1503
1504                 err = -EFAULT;
1505                 if (_IOC_DIR(cmd) & _IOC_WRITE)
1506                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1507                                 goto out;
1508                 break;
1509         }
1510
1511         if (is_ext_ctrl) {
1512                 struct v4l2_ext_controls *p = parg;
1513
1514                 /* In case of an error, tell the caller that it wasn't
1515                    a specific control that caused it. */
1516                 p->error_idx = p->count;
1517                 user_ptr = (void __user *)p->controls;
1518                 if (p->count) {
1519                         ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
1520                         /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
1521                         mbuf = kmalloc(ctrls_size, GFP_KERNEL);
1522                         err = -ENOMEM;
1523                         if (NULL == mbuf)
1524                                 goto out_ext_ctrl;
1525                         err = -EFAULT;
1526                         if (copy_from_user(mbuf, user_ptr, ctrls_size))
1527                                 goto out_ext_ctrl;
1528                         p->controls = mbuf;
1529                 }
1530         }
1531
1532         /* Handles IOCTL */
1533         err = __video_do_ioctl(inode, file, cmd, parg);
1534         if (err == -ENOIOCTLCMD)
1535                 err = -EINVAL;
1536         if (is_ext_ctrl) {
1537                 struct v4l2_ext_controls *p = parg;
1538
1539                 p->controls = (void *)user_ptr;
1540                 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
1541                         err = -EFAULT;
1542                 goto out_ext_ctrl;
1543         }
1544         if (err < 0)
1545                 goto out;
1546
1547 out_ext_ctrl:
1548         /*  Copy results into user buffer  */
1549         switch (_IOC_DIR(cmd))
1550         {
1551         case _IOC_READ:
1552         case (_IOC_WRITE | _IOC_READ):
1553                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1554                         err = -EFAULT;
1555                 break;
1556         }
1557
1558 out:
1559         kfree(mbuf);
1560         return err;
1561 }
1562
1563
1564 static struct file_operations video_fops;
1565
1566 /**
1567  *      video_register_device - register video4linux devices
1568  *      @vfd:  video device structure we want to register
1569  *      @type: type of device to register
1570  *      @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
1571  *             -1 == first free)
1572  *
1573  *      The registration code assigns minor numbers based on the type
1574  *      requested. -ENFILE is returned in all the device slots for this
1575  *      category are full. If not then the minor field is set and the
1576  *      driver initialize function is called (if non %NULL).
1577  *
1578  *      Zero is returned on success.
1579  *
1580  *      Valid types are
1581  *
1582  *      %VFL_TYPE_GRABBER - A frame grabber
1583  *
1584  *      %VFL_TYPE_VTX - A teletext device
1585  *
1586  *      %VFL_TYPE_VBI - Vertical blank data (undecoded)
1587  *
1588  *      %VFL_TYPE_RADIO - A radio card
1589  */
1590
1591 int video_register_device(struct video_device *vfd, int type, int nr)
1592 {
1593         int i=0;
1594         int base;
1595         int end;
1596         int ret;
1597         char *name_base;
1598
1599         switch(type)
1600         {
1601                 case VFL_TYPE_GRABBER:
1602                         base=MINOR_VFL_TYPE_GRABBER_MIN;
1603                         end=MINOR_VFL_TYPE_GRABBER_MAX+1;
1604                         name_base = "video";
1605                         break;
1606                 case VFL_TYPE_VTX:
1607                         base=MINOR_VFL_TYPE_VTX_MIN;
1608                         end=MINOR_VFL_TYPE_VTX_MAX+1;
1609                         name_base = "vtx";
1610                         break;
1611                 case VFL_TYPE_VBI:
1612                         base=MINOR_VFL_TYPE_VBI_MIN;
1613                         end=MINOR_VFL_TYPE_VBI_MAX+1;
1614                         name_base = "vbi";
1615                         break;
1616                 case VFL_TYPE_RADIO:
1617                         base=MINOR_VFL_TYPE_RADIO_MIN;
1618                         end=MINOR_VFL_TYPE_RADIO_MAX+1;
1619                         name_base = "radio";
1620                         break;
1621                 default:
1622                         printk(KERN_ERR "%s called with unknown type: %d\n",
1623                                __FUNCTION__, type);
1624                         return -1;
1625         }
1626
1627         /* pick a minor number */
1628         mutex_lock(&videodev_lock);
1629         if (nr >= 0  &&  nr < end-base) {
1630                 /* use the one the driver asked for */
1631                 i = base+nr;
1632                 if (NULL != video_device[i]) {
1633                         mutex_unlock(&videodev_lock);
1634                         return -ENFILE;
1635                 }
1636         } else {
1637                 /* use first free */
1638                 for(i=base;i<end;i++)
1639                         if (NULL == video_device[i])
1640                                 break;
1641                 if (i == end) {
1642                         mutex_unlock(&videodev_lock);
1643                         return -ENFILE;
1644                 }
1645         }
1646         video_device[i]=vfd;
1647         vfd->minor=i;
1648         mutex_unlock(&videodev_lock);
1649         mutex_init(&vfd->lock);
1650
1651         /* sysfs class */
1652         memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
1653         if (vfd->dev)
1654                 vfd->class_dev.dev = vfd->dev;
1655         vfd->class_dev.class       = &video_class;
1656         vfd->class_dev.devt        = MKDEV(VIDEO_MAJOR, vfd->minor);
1657         sprintf(vfd->class_dev.class_id, "%s%d", name_base, i - base);
1658         ret = class_device_register(&vfd->class_dev);
1659         if (ret < 0) {
1660                 printk(KERN_ERR "%s: class_device_register failed\n",
1661                        __FUNCTION__);
1662                 goto fail_minor;
1663         }
1664         ret = class_device_create_file(&vfd->class_dev, &class_device_attr_name);
1665         if (ret < 0) {
1666                 printk(KERN_ERR "%s: class_device_create_file 'name' failed\n",
1667                        __FUNCTION__);
1668                 goto fail_classdev;
1669         }
1670
1671 #if 1
1672         /* needed until all drivers are fixed */
1673         if (!vfd->release)
1674                 printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
1675                        "Please fix your driver for proper sysfs support, see "
1676                        "http://lwn.net/Articles/36850/\n", vfd->name);
1677 #endif
1678         return 0;
1679
1680 fail_classdev:
1681         class_device_unregister(&vfd->class_dev);
1682 fail_minor:
1683         mutex_lock(&videodev_lock);
1684         video_device[vfd->minor] = NULL;
1685         vfd->minor = -1;
1686         mutex_unlock(&videodev_lock);
1687         return ret;
1688 }
1689
1690 /**
1691  *      video_unregister_device - unregister a video4linux device
1692  *      @vfd: the device to unregister
1693  *
1694  *      This unregisters the passed device and deassigns the minor
1695  *      number. Future open calls will be met with errors.
1696  */
1697
1698 void video_unregister_device(struct video_device *vfd)
1699 {
1700         mutex_lock(&videodev_lock);
1701         if(video_device[vfd->minor]!=vfd)
1702                 panic("videodev: bad unregister");
1703
1704         video_device[vfd->minor]=NULL;
1705         class_device_unregister(&vfd->class_dev);
1706         mutex_unlock(&videodev_lock);
1707 }
1708
1709 /*
1710  * Video fs operations
1711  */
1712 static struct file_operations video_fops=
1713 {
1714         .owner          = THIS_MODULE,
1715         .llseek         = no_llseek,
1716         .open           = video_open,
1717 };
1718
1719 /*
1720  *      Initialise video for linux
1721  */
1722
1723 static int __init videodev_init(void)
1724 {
1725         int ret;
1726
1727         printk(KERN_INFO "Linux video capture interface: v2.00\n");
1728         if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
1729                 printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
1730                 return -EIO;
1731         }
1732
1733         ret = class_register(&video_class);
1734         if (ret < 0) {
1735                 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1736                 printk(KERN_WARNING "video_dev: class_register failed\n");
1737                 return -EIO;
1738         }
1739
1740         return 0;
1741 }
1742
1743 static void __exit videodev_exit(void)
1744 {
1745         class_unregister(&video_class);
1746         unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1747 }
1748
1749 module_init(videodev_init)
1750 module_exit(videodev_exit)
1751
1752 EXPORT_SYMBOL(video_register_device);
1753 EXPORT_SYMBOL(video_unregister_device);
1754 EXPORT_SYMBOL(video_devdata);
1755 EXPORT_SYMBOL(video_usercopy);
1756 EXPORT_SYMBOL(video_exclusive_open);
1757 EXPORT_SYMBOL(video_exclusive_release);
1758 EXPORT_SYMBOL(video_ioctl2);
1759 EXPORT_SYMBOL(video_device_alloc);
1760 EXPORT_SYMBOL(video_device_release);
1761
1762 MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
1763 MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
1764 MODULE_LICENSE("GPL");
1765
1766
1767 /*
1768  * Local variables:
1769  * c-basic-offset: 8
1770  * End:
1771  */