V4L/DVB (4189): Add videodev support for VIDIOC_S/G/TRY_EXT_CTRLS.
[linux-2.6.git] / 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 #define dbgarg2(fmt, arg...) \
26                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)                  \
27                         printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
28
29 #include <linux/module.h>
30 #include <linux/types.h>
31 #include <linux/kernel.h>
32 #include <linux/sched.h>
33 #include <linux/smp_lock.h>
34 #include <linux/mm.h>
35 #include <linux/string.h>
36 #include <linux/errno.h>
37 #include <linux/init.h>
38 #include <linux/kmod.h>
39 #include <linux/slab.h>
40 #include <linux/devfs_fs_kernel.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_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\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);
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=0x%08x, field=%s, "
373                 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
374                 fmt->width,fmt->height,fmt->pixelformat,
375                 prt_names(fmt->field,v4l2_field_names_FIXME),
376                 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
377 };
378
379
380 static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
381 {
382         switch (type) {
383         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
384                 if (vfd->vidioc_try_fmt_cap)
385                         return (0);
386                 break;
387         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
388                 if (vfd->vidioc_try_fmt_overlay)
389                         return (0);
390                 break;
391         case V4L2_BUF_TYPE_VBI_CAPTURE:
392                 if (vfd->vidioc_try_fmt_vbi)
393                         return (0);
394                 break;
395         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
396                 if (vfd->vidioc_try_fmt_vbi_output)
397                         return (0);
398                 break;
399         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
400                 if (vfd->vidioc_try_fmt_vbi_capture)
401                         return (0);
402                 break;
403         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
404                 if (vfd->vidioc_try_fmt_video_output)
405                         return (0);
406                 break;
407         case V4L2_BUF_TYPE_VBI_OUTPUT:
408                 if (vfd->vidioc_try_fmt_vbi_output)
409                         return (0);
410                 break;
411         case V4L2_BUF_TYPE_PRIVATE:
412                 if (vfd->vidioc_try_fmt_type_private)
413                         return (0);
414                 break;
415         }
416         return (-EINVAL);
417 }
418
419 static int __video_do_ioctl(struct inode *inode, struct file *file,
420                 unsigned int cmd, void *arg)
421 {
422         struct video_device *vfd = video_devdata(file);
423         void                 *fh = file->private_data;
424         int                  ret = -EINVAL;
425
426         if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
427                                 !(vfd->debug | V4L2_DEBUG_IOCTL_ARG)) {
428                 v4l_print_ioctl(vfd->name, cmd);
429         }
430
431         switch(cmd) {
432         /* --- capabilities ------------------------------------------ */
433         case VIDIOC_QUERYCAP:
434         {
435                 struct v4l2_capability *cap = (struct v4l2_capability*)arg;
436                 memset(cap, 0, sizeof(*cap));
437
438                 if (!vfd->vidioc_querycap)
439                         break;
440
441                 ret=vfd->vidioc_querycap(file, fh, cap);
442                 if (!ret)
443                         dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
444                                         "version=0x%08x, "
445                                         "capabilities=0x%08x\n",
446                                         cap->driver,cap->card,cap->bus_info,
447                                         cap->version,
448                                         cap->capabilities);
449                 break;
450         }
451
452         /* --- priority ------------------------------------------ */
453         case VIDIOC_G_PRIORITY:
454         {
455                 enum v4l2_priority *p=arg;
456
457                 if (!vfd->vidioc_g_priority)
458                         break;
459                 ret=vfd->vidioc_g_priority(file, fh, p);
460                 if (!ret)
461                         dbgarg(cmd, "priority is %d\n", *p);
462                 break;
463         }
464         case VIDIOC_S_PRIORITY:
465         {
466                 enum v4l2_priority *p=arg;
467
468                 if (!vfd->vidioc_s_priority)
469                         break;
470                 dbgarg(cmd, "setting priority to %d\n", *p);
471                 ret=vfd->vidioc_s_priority(file, fh, *p);
472                 break;
473         }
474
475         /* --- capture ioctls ---------------------------------------- */
476         case VIDIOC_ENUM_FMT:
477         {
478                 struct v4l2_fmtdesc *f = arg;
479                 enum v4l2_buf_type type;
480                 unsigned int index;
481
482                 index = f->index;
483                 type  = f->type;
484                 memset(f,0,sizeof(*f));
485                 f->index = index;
486                 f->type  = type;
487
488                 switch (type) {
489                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
490                         if (vfd->vidioc_enum_fmt_cap)
491                                 ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
492                         break;
493                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
494                         if (vfd->vidioc_enum_fmt_overlay)
495                                 ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
496                         break;
497                 case V4L2_BUF_TYPE_VBI_CAPTURE:
498                         if (vfd->vidioc_enum_fmt_vbi)
499                                 ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
500                         break;
501                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
502                         if (vfd->vidioc_enum_fmt_vbi_output)
503                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
504                                                                 fh, f);
505                         break;
506                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
507                         if (vfd->vidioc_enum_fmt_vbi_capture)
508                                 ret=vfd->vidioc_enum_fmt_vbi_capture(file,
509                                                                 fh, f);
510                         break;
511                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
512                         if (vfd->vidioc_enum_fmt_video_output)
513                                 ret=vfd->vidioc_enum_fmt_video_output(file,
514                                                                 fh, f);
515                         break;
516                 case V4L2_BUF_TYPE_VBI_OUTPUT:
517                         if (vfd->vidioc_enum_fmt_vbi_output)
518                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
519                                                                 fh, f);
520                         break;
521                 case V4L2_BUF_TYPE_PRIVATE:
522                         if (vfd->vidioc_enum_fmt_type_private)
523                                 ret=vfd->vidioc_enum_fmt_type_private(file,
524                                                                 fh, f);
525                         break;
526                 }
527                 if (!ret)
528                         dbgarg (cmd, "index=%d, type=%d, flags=%d, "
529                                         "description=%s,"
530                                         " pixelformat=0x%8x\n",
531                                         f->index, f->type, f->flags,
532                                         f->description,
533                                         f->pixelformat);
534
535                 break;
536         }
537         case VIDIOC_G_FMT:
538         {
539                 struct v4l2_format *f = (struct v4l2_format *)arg;
540                 enum v4l2_buf_type type=f->type;
541
542                 memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
543                 f->type=type;
544
545                 /* FIXME: Should be one dump per type */
546                 dbgarg (cmd, "type=%s\n", prt_names(type,
547                                         v4l2_type_names_FIXME));
548
549                 switch (type) {
550                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
551                         if (vfd->vidioc_g_fmt_cap)
552                                 ret=vfd->vidioc_g_fmt_cap(file, fh, f);
553                         if (!ret)
554                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
555                         break;
556                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
557                         if (vfd->vidioc_g_fmt_overlay)
558                                 ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
559                         break;
560                 case V4L2_BUF_TYPE_VBI_CAPTURE:
561                         if (vfd->vidioc_g_fmt_vbi)
562                                 ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
563                         break;
564                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
565                         if (vfd->vidioc_g_fmt_vbi_output)
566                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
567                         break;
568                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
569                         if (vfd->vidioc_g_fmt_vbi_capture)
570                                 ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
571                         break;
572                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
573                         if (vfd->vidioc_g_fmt_video_output)
574                                 ret=vfd->vidioc_g_fmt_video_output(file,
575                                                                 fh, f);
576                         break;
577                 case V4L2_BUF_TYPE_VBI_OUTPUT:
578                         if (vfd->vidioc_g_fmt_vbi_output)
579                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
580                         break;
581                 case V4L2_BUF_TYPE_PRIVATE:
582                         if (vfd->vidioc_g_fmt_type_private)
583                                 ret=vfd->vidioc_g_fmt_type_private(file,
584                                                                 fh, f);
585                         break;
586                 }
587
588                 break;
589         }
590         case VIDIOC_S_FMT:
591         {
592                 struct v4l2_format *f = (struct v4l2_format *)arg;
593
594                 /* FIXME: Should be one dump per type */
595                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
596                                         v4l2_type_names_FIXME));
597
598                 switch (f->type) {
599                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
600                         v4l_print_pix_fmt(vfd,&f->fmt.pix);
601                         if (vfd->vidioc_s_fmt_cap)
602                                 ret=vfd->vidioc_s_fmt_cap(file, fh, f);
603                         break;
604                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
605                         if (vfd->vidioc_s_fmt_overlay)
606                                 ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
607                         break;
608                 case V4L2_BUF_TYPE_VBI_CAPTURE:
609                         if (vfd->vidioc_s_fmt_vbi)
610                                 ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
611                         break;
612                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
613                         if (vfd->vidioc_s_fmt_vbi_output)
614                                 ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
615                         break;
616                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
617                         if (vfd->vidioc_s_fmt_vbi_capture)
618                                 ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
619                         break;
620                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
621                         if (vfd->vidioc_s_fmt_video_output)
622                                 ret=vfd->vidioc_s_fmt_video_output(file,
623                                                                 fh, f);
624                         break;
625                 case V4L2_BUF_TYPE_VBI_OUTPUT:
626                         if (vfd->vidioc_s_fmt_vbi_output)
627                                 ret=vfd->vidioc_s_fmt_vbi_output(file,
628                                                                 fh, f);
629                         break;
630                 case V4L2_BUF_TYPE_PRIVATE:
631                         if (vfd->vidioc_s_fmt_type_private)
632                                 ret=vfd->vidioc_s_fmt_type_private(file,
633                                                                 fh, f);
634                         break;
635                 }
636                 break;
637         }
638         case VIDIOC_TRY_FMT:
639         {
640                 struct v4l2_format *f = (struct v4l2_format *)arg;
641
642                 /* FIXME: Should be one dump per type */
643                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
644                                                 v4l2_type_names_FIXME));
645                 switch (f->type) {
646                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
647                         if (vfd->vidioc_try_fmt_cap)
648                                 ret=vfd->vidioc_try_fmt_cap(file, fh, f);
649                         if (!ret)
650                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
651                         break;
652                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
653                         if (vfd->vidioc_try_fmt_overlay)
654                                 ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
655                         break;
656                 case V4L2_BUF_TYPE_VBI_CAPTURE:
657                         if (vfd->vidioc_try_fmt_vbi)
658                                 ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
659                         break;
660                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
661                         if (vfd->vidioc_try_fmt_vbi_output)
662                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
663                                                                 fh, f);
664                         break;
665                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
666                         if (vfd->vidioc_try_fmt_vbi_capture)
667                                 ret=vfd->vidioc_try_fmt_vbi_capture(file,
668                                                                 fh, f);
669                         break;
670                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
671                         if (vfd->vidioc_try_fmt_video_output)
672                                 ret=vfd->vidioc_try_fmt_video_output(file,
673                                                                 fh, f);
674                         break;
675                 case V4L2_BUF_TYPE_VBI_OUTPUT:
676                         if (vfd->vidioc_try_fmt_vbi_output)
677                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
678                                                                 fh, f);
679                         break;
680                 case V4L2_BUF_TYPE_PRIVATE:
681                         if (vfd->vidioc_try_fmt_type_private)
682                                 ret=vfd->vidioc_try_fmt_type_private(file,
683                                                                 fh, f);
684                         break;
685                 }
686
687                 break;
688         }
689         /* FIXME: Those buf reqs could be handled here,
690            with some changes on videobuf to allow its header to be included at
691            videodev2.h or being merged at videodev2.
692          */
693         case VIDIOC_REQBUFS:
694         {
695                 struct v4l2_requestbuffers *p=arg;
696
697                 if (!vfd->vidioc_reqbufs)
698                         break;
699                 ret = check_fmt (vfd, p->type);
700                 if (ret)
701                         break;
702
703                 ret=vfd->vidioc_reqbufs(file, fh, p);
704                 dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
705                                 p->count,
706                                 prt_names(p->type,v4l2_type_names_FIXME),
707                                 prt_names(p->memory,v4l2_memory_names));
708                 break;
709         }
710         case VIDIOC_QUERYBUF:
711         {
712                 struct v4l2_buffer *p=arg;
713
714                 if (!vfd->vidioc_querybuf)
715                         break;
716                 ret = check_fmt (vfd, p->type);
717                 if (ret)
718                         break;
719
720                 ret=vfd->vidioc_querybuf(file, fh, p);
721                 if (!ret)
722                         dbgbuf(cmd,vfd,p);
723                 break;
724         }
725         case VIDIOC_QBUF:
726         {
727                 struct v4l2_buffer *p=arg;
728
729                 if (!vfd->vidioc_qbuf)
730                         break;
731                 ret = check_fmt (vfd, p->type);
732                 if (ret)
733                         break;
734
735                 ret=vfd->vidioc_qbuf(file, fh, p);
736                 if (!ret)
737                         dbgbuf(cmd,vfd,p);
738                 break;
739         }
740         case VIDIOC_DQBUF:
741         {
742                 struct v4l2_buffer *p=arg;
743                 if (!vfd->vidioc_qbuf)
744                         break;
745                 ret = check_fmt (vfd, p->type);
746                 if (ret)
747                         break;
748
749                 ret=vfd->vidioc_qbuf(file, fh, p);
750                 if (!ret)
751                         dbgbuf(cmd,vfd,p);
752                 break;
753         }
754         case VIDIOC_OVERLAY:
755         {
756                 int *i = arg;
757
758                 if (!vfd->vidioc_overlay)
759                         break;
760                 dbgarg (cmd, "value=%d\n",*i);
761                 ret=vfd->vidioc_overlay(file, fh, *i);
762                 break;
763         }
764 #ifdef HAVE_V4L1
765         /* --- streaming capture ------------------------------------- */
766         case VIDIOCGMBUF:
767         {
768                 struct video_mbuf *p=arg;
769
770                 memset(p,0,sizeof(p));
771
772                 if (!vfd->vidiocgmbuf)
773                         break;
774                 ret=vfd->vidiocgmbuf(file, fh, p);
775                 if (!ret)
776                         dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
777                                                 p->size, p->frames,
778                                                 (unsigned long)p->offsets);
779                 break;
780         }
781 #endif
782         case VIDIOC_G_FBUF:
783         {
784                 struct v4l2_framebuffer *p=arg;
785                 if (!vfd->vidioc_g_fbuf)
786                         break;
787                 ret=vfd->vidioc_g_fbuf(file, fh, arg);
788                 if (!ret) {
789                         dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
790                                         p->capability,p->flags,
791                                         (unsigned long)p->base);
792                         v4l_print_pix_fmt (vfd, &p->fmt);
793                 }
794                 break;
795         }
796         case VIDIOC_S_FBUF:
797         {
798                 struct v4l2_framebuffer *p=arg;
799                 if (!vfd->vidioc_s_fbuf)
800                         break;
801
802                 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
803                                 p->capability,p->flags,(unsigned long)p->base);
804                 v4l_print_pix_fmt (vfd, &p->fmt);
805                 ret=vfd->vidioc_s_fbuf(file, fh, arg);
806
807                 break;
808         }
809         case VIDIOC_STREAMON:
810         {
811                 enum v4l2_buf_type i = *(int *)arg;
812                 if (!vfd->vidioc_streamon)
813                         break;
814                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
815                 ret=vfd->vidioc_streamon(file, fh,i);
816                 break;
817         }
818         case VIDIOC_STREAMOFF:
819         {
820                 enum v4l2_buf_type i = *(int *)arg;
821
822                 if (!vfd->vidioc_streamoff)
823                         break;
824                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
825                 ret=vfd->vidioc_streamoff(file, fh, i);
826                 break;
827         }
828         /* ---------- tv norms ---------- */
829         case VIDIOC_ENUMSTD:
830         {
831                 struct v4l2_standard *p = arg;
832                 unsigned int index = p->index;
833
834                 if (!vfd->tvnormsize) {
835                         printk (KERN_WARNING "%s: no TV norms defined!\n",
836                                                 vfd->name);
837                         break;
838                 }
839
840                 if (index<=0 || index >= vfd->tvnormsize) {
841                         ret=-EINVAL;
842                         break;
843                 }
844                 v4l2_video_std_construct(p, vfd->tvnorms[p->index].id,
845                                          vfd->tvnorms[p->index].name);
846                 p->index = index;
847
848                 dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
849                                 "framelines=%d\n", p->index,
850                                 (unsigned long long)p->id, p->name,
851                                 p->frameperiod.numerator,
852                                 p->frameperiod.denominator,
853                                 p->framelines);
854
855                 ret=0;
856                 break;
857         }
858         case VIDIOC_G_STD:
859         {
860                 v4l2_std_id *id = arg;
861
862                 *id = vfd->current_norm;
863
864                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
865
866                 ret=0;
867                 break;
868         }
869         case VIDIOC_S_STD:
870         {
871                 v4l2_std_id *id = arg;
872                 unsigned int i;
873
874                 if (!vfd->tvnormsize) {
875                         printk (KERN_WARNING "%s: no TV norms defined!\n",
876                                                 vfd->name);
877                         break;
878                 }
879
880                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
881
882                 /* First search for exact match */
883                 for (i = 0; i < vfd->tvnormsize; i++)
884                         if (*id == vfd->tvnorms[i].id)
885                                 break;
886                 /* Then for a generic video std that contains desired std */
887                 if (i == vfd->tvnormsize)
888                         for (i = 0; i < vfd->tvnormsize; i++)
889                                 if (*id & vfd->tvnorms[i].id)
890                                         break;
891                 if (i == vfd->tvnormsize) {
892                         break;
893                 }
894
895                 /* Calls the specific handler */
896                 if (vfd->vidioc_s_std)
897                         ret=vfd->vidioc_s_std(file, fh, i);
898                 else
899                         ret=-EINVAL;
900
901                 /* Updates standard information */
902                 if (!ret)
903                         vfd->current_norm=*id;
904
905                 break;
906         }
907         case VIDIOC_QUERYSTD:
908         {
909                 v4l2_std_id *p=arg;
910
911                 if (!vfd->vidioc_querystd)
912                         break;
913                 ret=vfd->vidioc_querystd(file, fh, arg);
914                 if (!ret)
915                         dbgarg (cmd, "detected std=%Lu\n",
916                                                 (unsigned long long)*p);
917                 break;
918         }
919         /* ------ input switching ---------- */
920         /* FIXME: Inputs can be handled inside videodev2 */
921         case VIDIOC_ENUMINPUT:
922         {
923                 struct v4l2_input *p=arg;
924                 int i=p->index;
925
926                 if (!vfd->vidioc_enum_input)
927                         break;
928                 memset(p, 0, sizeof(*p));
929                 p->index=i;
930
931                 ret=vfd->vidioc_enum_input(file, fh, p);
932                 if (!ret)
933                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
934                                         "audioset=%d, "
935                                         "tuner=%d, std=%Ld, status=%d\n",
936                                         p->index,p->name,p->type,p->audioset,
937                                         p->tuner,
938                                         (unsigned long long)p->std,
939                                         p->status);
940                 break;
941         }
942         case VIDIOC_G_INPUT:
943         {
944                 unsigned int *i = arg;
945
946                 if (!vfd->vidioc_g_input)
947                         break;
948                 ret=vfd->vidioc_g_input(file, fh, i);
949                 if (!ret)
950                         dbgarg (cmd, "value=%d\n",*i);
951                 break;
952         }
953         case VIDIOC_S_INPUT:
954         {
955                 unsigned int *i = arg;
956
957                 if (!vfd->vidioc_s_input)
958                         break;
959                 dbgarg (cmd, "value=%d\n",*i);
960                 ret=vfd->vidioc_s_input(file, fh, *i);
961                 break;
962         }
963
964         /* ------ output switching ---------- */
965         case VIDIOC_G_OUTPUT:
966         {
967                 unsigned int *i = arg;
968
969                 if (!vfd->vidioc_g_output)
970                         break;
971                 ret=vfd->vidioc_g_output(file, fh, i);
972                 if (!ret)
973                         dbgarg (cmd, "value=%d\n",*i);
974                 break;
975         }
976         case VIDIOC_S_OUTPUT:
977         {
978                 unsigned int *i = arg;
979
980                 if (!vfd->vidioc_s_output)
981                         break;
982                 dbgarg (cmd, "value=%d\n",*i);
983                 ret=vfd->vidioc_s_output(file, fh, *i);
984                 break;
985         }
986
987         /* --- controls ---------------------------------------------- */
988         case VIDIOC_QUERYCTRL:
989         {
990                 struct v4l2_queryctrl *p=arg;
991
992                 if (!vfd->vidioc_queryctrl)
993                         break;
994                 ret=vfd->vidioc_queryctrl(file, fh, p);
995
996                 if (!ret)
997                         dbgarg (cmd, "id=%d, type=%d, name=%s, "
998                                         "min/max=%d/%d,"
999                                         " step=%d, default=%d, flags=0x%08x\n",
1000                                         p->id,p->type,p->name,p->minimum,
1001                                         p->maximum,p->step,p->default_value,
1002                                         p->flags);
1003                 break;
1004         }
1005         case VIDIOC_G_CTRL:
1006         {
1007                 struct v4l2_control *p = arg;
1008
1009                 if (!vfd->vidioc_g_ctrl)
1010                         break;
1011                 dbgarg(cmd, "Enum for index=%d\n", p->id);
1012
1013                 ret=vfd->vidioc_g_ctrl(file, fh, p);
1014                 if (!ret)
1015                         dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
1016                 break;
1017         }
1018         case VIDIOC_S_CTRL:
1019         {
1020                 struct v4l2_control *p = arg;
1021
1022                 if (!vfd->vidioc_s_ctrl)
1023                         break;
1024                 dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
1025
1026                 ret=vfd->vidioc_s_ctrl(file, fh, p);
1027                 break;
1028         }
1029         case VIDIOC_G_EXT_CTRLS:
1030         {
1031                 struct v4l2_ext_controls *p = arg;
1032
1033                 if (vfd->vidioc_g_ext_ctrls) {
1034                         dbgarg(cmd, "count=%d\n", p->count);
1035
1036                         ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
1037                 }
1038                 break;
1039         }
1040         case VIDIOC_S_EXT_CTRLS:
1041         {
1042                 struct v4l2_ext_controls *p = arg;
1043
1044                 if (vfd->vidioc_s_ext_ctrls) {
1045                         dbgarg(cmd, "count=%d\n", p->count);
1046
1047                         ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
1048                 }
1049                 break;
1050         }
1051         case VIDIOC_TRY_EXT_CTRLS:
1052         {
1053                 struct v4l2_ext_controls *p = arg;
1054
1055                 if (vfd->vidioc_try_ext_ctrls) {
1056                         dbgarg(cmd, "count=%d\n", p->count);
1057
1058                         ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
1059                 }
1060                 break;
1061         }
1062         case VIDIOC_QUERYMENU:
1063         {
1064                 struct v4l2_querymenu *p=arg;
1065                 if (!vfd->vidioc_querymenu)
1066                         break;
1067                 ret=vfd->vidioc_querymenu(file, fh, p);
1068                 if (!ret)
1069                         dbgarg (cmd, "id=%d, index=%d, name=%s\n",
1070                                                 p->id,p->index,p->name);
1071                 break;
1072         }
1073         /* --- audio ---------------------------------------------- */
1074         case VIDIOC_ENUMAUDIO:
1075         {
1076                 struct v4l2_audio *p=arg;
1077
1078                 if (!vfd->vidioc_enumaudio)
1079                         break;
1080                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1081                 ret=vfd->vidioc_enumaudio(file, fh, p);
1082                 if (!ret)
1083                         dbgarg2("index=%d, name=%s, capability=%d, "
1084                                         "mode=%d\n",p->index,p->name,
1085                                         p->capability, p->mode);
1086                 break;
1087         }
1088         case VIDIOC_G_AUDIO:
1089         {
1090                 struct v4l2_audio *p=arg;
1091
1092                 if (!vfd->vidioc_g_audio)
1093                         break;
1094                 dbgarg(cmd, "Get for index=%d\n", p->index);
1095                 ret=vfd->vidioc_g_audio(file, fh, p);
1096                 if (!ret)
1097                         dbgarg2("index=%d, name=%s, capability=%d, "
1098                                         "mode=%d\n",p->index,
1099                                         p->name,p->capability, p->mode);
1100                 break;
1101         }
1102         case VIDIOC_S_AUDIO:
1103         {
1104                 struct v4l2_audio *p=arg;
1105
1106                 if (!vfd->vidioc_s_audio)
1107                         break;
1108                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1109                                         "mode=%d\n", p->index, p->name,
1110                                         p->capability, p->mode);
1111                 ret=vfd->vidioc_s_audio(file, fh, p);
1112                 break;
1113         }
1114         case VIDIOC_ENUMAUDOUT:
1115         {
1116                 struct v4l2_audioout *p=arg;
1117
1118                 if (!vfd->vidioc_enumaudout)
1119                         break;
1120                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1121                 ret=vfd->vidioc_enumaudout(file, fh, p);
1122                 if (!ret)
1123                         dbgarg2("index=%d, name=%s, capability=%d, "
1124                                         "mode=%d\n", p->index, p->name,
1125                                         p->capability,p->mode);
1126                 break;
1127         }
1128         case VIDIOC_G_AUDOUT:
1129         {
1130                 struct v4l2_audioout *p=arg;
1131
1132                 if (!vfd->vidioc_g_audout)
1133                         break;
1134                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1135                 ret=vfd->vidioc_g_audout(file, fh, p);
1136                 if (!ret)
1137                         dbgarg2("index=%d, name=%s, capability=%d, "
1138                                         "mode=%d\n", p->index, p->name,
1139                                         p->capability,p->mode);
1140                 break;
1141         }
1142         case VIDIOC_S_AUDOUT:
1143         {
1144                 struct v4l2_audioout *p=arg;
1145
1146                 if (!vfd->vidioc_s_audout)
1147                         break;
1148                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1149                                         "mode=%d\n", p->index, p->name,
1150                                         p->capability,p->mode);
1151
1152                 ret=vfd->vidioc_s_audout(file, fh, p);
1153                 break;
1154         }
1155         case VIDIOC_G_MODULATOR:
1156         {
1157                 struct v4l2_modulator *p=arg;
1158                 if (!vfd->vidioc_g_modulator)
1159                         break;
1160                 ret=vfd->vidioc_g_modulator(file, fh, p);
1161                 if (!ret)
1162                         dbgarg(cmd, "index=%d, name=%s, "
1163                                         "capability=%d, rangelow=%d,"
1164                                         " rangehigh=%d, txsubchans=%d\n",
1165                                         p->index, p->name,p->capability,
1166                                         p->rangelow, p->rangehigh,
1167                                         p->txsubchans);
1168                 break;
1169         }
1170         case VIDIOC_S_MODULATOR:
1171         {
1172                 struct v4l2_modulator *p=arg;
1173                 if (!vfd->vidioc_s_modulator)
1174                         break;
1175                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1176                                 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1177                                 p->index, p->name,p->capability,p->rangelow,
1178                                 p->rangehigh,p->txsubchans);
1179                         ret=vfd->vidioc_s_modulator(file, fh, p);
1180                 break;
1181         }
1182         case VIDIOC_G_CROP:
1183         {
1184                 struct v4l2_crop *p=arg;
1185                 if (!vfd->vidioc_g_crop)
1186                         break;
1187                 ret=vfd->vidioc_g_crop(file, fh, p);
1188                 if (!ret) {
1189                         dbgarg(cmd, "type=%d\n", p->type);
1190                         dbgrect(vfd, "", &p->c);
1191                 }
1192                 break;
1193         }
1194         case VIDIOC_S_CROP:
1195         {
1196                 struct v4l2_crop *p=arg;
1197                 if (!vfd->vidioc_s_crop)
1198                         break;
1199                 dbgarg(cmd, "type=%d\n", p->type);
1200                 dbgrect(vfd, "", &p->c);
1201                 ret=vfd->vidioc_s_crop(file, fh, p);
1202                 break;
1203         }
1204         case VIDIOC_CROPCAP:
1205         {
1206                 struct v4l2_cropcap *p=arg;
1207                 /*FIXME: Should also show v4l2_fract pixelaspect */
1208                 if (!vfd->vidioc_cropcap)
1209                         break;
1210                 dbgarg(cmd, "type=%d\n", p->type);
1211                 dbgrect(vfd, "bounds ", &p->bounds);
1212                 dbgrect(vfd, "defrect ", &p->defrect);
1213                 ret=vfd->vidioc_cropcap(file, fh, p);
1214                 break;
1215         }
1216         case VIDIOC_G_MPEGCOMP:
1217         {
1218                 struct v4l2_mpeg_compression *p=arg;
1219                 /*FIXME: Several fields not shown */
1220                 if (!vfd->vidioc_g_mpegcomp)
1221                         break;
1222                 ret=vfd->vidioc_g_mpegcomp(file, fh, p);
1223                 if (!ret)
1224                         dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
1225                                         " ts_pid_video=%d, ts_pid_pcr=%d, "
1226                                         "ps_size=%d, au_sample_rate=%d, "
1227                                         "au_pesid=%c, vi_frame_rate=%d, "
1228                                         "vi_frames_per_gop=%d, "
1229                                         "vi_bframes_count=%d, vi_pesid=%c\n",
1230                                         p->ts_pid_pmt,p->ts_pid_audio,
1231                                         p->ts_pid_video,p->ts_pid_pcr,
1232                                         p->ps_size, p->au_sample_rate,
1233                                         p->au_pesid, p->vi_frame_rate,
1234                                         p->vi_frames_per_gop,
1235                                         p->vi_bframes_count, p->vi_pesid);
1236                 break;
1237         }
1238         case VIDIOC_S_MPEGCOMP:
1239         {
1240                 struct v4l2_mpeg_compression *p=arg;
1241                 /*FIXME: Several fields not shown */
1242                 if (!vfd->vidioc_s_mpegcomp)
1243                         break;
1244                 dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
1245                                 "ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
1246                                 "au_sample_rate=%d, au_pesid=%c, "
1247                                 "vi_frame_rate=%d, vi_frames_per_gop=%d, "
1248                                 "vi_bframes_count=%d, vi_pesid=%c\n",
1249                                 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
1250                                 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
1251                                 p->au_pesid, p->vi_frame_rate,
1252                                 p->vi_frames_per_gop, p->vi_bframes_count,
1253                                 p->vi_pesid);
1254                 ret=vfd->vidioc_s_mpegcomp(file, fh, p);
1255                 break;
1256         }
1257         case VIDIOC_G_JPEGCOMP:
1258         {
1259                 struct v4l2_jpegcompression *p=arg;
1260                 if (!vfd->vidioc_g_jpegcomp)
1261                         break;
1262                 ret=vfd->vidioc_g_jpegcomp(file, fh, p);
1263                 if (!ret)
1264                         dbgarg (cmd, "quality=%d, APPn=%d, "
1265                                                 "APP_len=%d, COM_len=%d, "
1266                                                 "jpeg_markers=%d\n",
1267                                                 p->quality,p->APPn,p->APP_len,
1268                                                 p->COM_len,p->jpeg_markers);
1269                 break;
1270         }
1271         case VIDIOC_S_JPEGCOMP:
1272         {
1273                 struct v4l2_jpegcompression *p=arg;
1274                 if (!vfd->vidioc_g_jpegcomp)
1275                         break;
1276                 dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
1277                                         "COM_len=%d, jpeg_markers=%d\n",
1278                                         p->quality,p->APPn,p->APP_len,
1279                                         p->COM_len,p->jpeg_markers);
1280                         ret=vfd->vidioc_s_jpegcomp(file, fh, p);
1281                 break;
1282         }
1283         case VIDIOC_G_PARM:
1284         {
1285                 struct v4l2_streamparm *p=arg;
1286                 if (!vfd->vidioc_g_parm)
1287                         break;
1288                 ret=vfd->vidioc_g_parm(file, fh, p);
1289                 dbgarg (cmd, "type=%d\n", p->type);
1290                 break;
1291         }
1292         case VIDIOC_S_PARM:
1293         {
1294                 struct v4l2_streamparm *p=arg;
1295                 if (!vfd->vidioc_s_parm)
1296                         break;
1297                 dbgarg (cmd, "type=%d\n", p->type);
1298                 ret=vfd->vidioc_s_parm(file, fh, p);
1299                 break;
1300         }
1301         case VIDIOC_G_TUNER:
1302         {
1303                 struct v4l2_tuner *p=arg;
1304                 if (!vfd->vidioc_g_tuner)
1305                         break;
1306                 ret=vfd->vidioc_g_tuner(file, fh, p);
1307                 if (!ret)
1308                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
1309                                         "capability=%d, rangelow=%d, "
1310                                         "rangehigh=%d, signal=%d, afc=%d, "
1311                                         "rxsubchans=%d, audmode=%d\n",
1312                                         p->index, p->name, p->type,
1313                                         p->capability, p->rangelow,
1314                                         p->rangehigh, p->rxsubchans,
1315                                         p->audmode, p->signal, p->afc);
1316                 break;
1317         }
1318         case VIDIOC_S_TUNER:
1319         {
1320                 struct v4l2_tuner *p=arg;
1321                 if (!vfd->vidioc_s_tuner)
1322                         break;
1323                 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1324                                 "capability=%d, rangelow=%d, rangehigh=%d, "
1325                                 "signal=%d, afc=%d, rxsubchans=%d, "
1326                                 "audmode=%d\n",p->index, p->name, p->type,
1327                                 p->capability, p->rangelow,p->rangehigh,
1328                                 p->rxsubchans, p->audmode, p->signal,
1329                                 p->afc);
1330                 ret=vfd->vidioc_s_tuner(file, fh, p);
1331                 break;
1332         }
1333         case VIDIOC_G_FREQUENCY:
1334         {
1335                 struct v4l2_frequency *p=arg;
1336                 if (!vfd->vidioc_g_frequency)
1337                         break;
1338                 ret=vfd->vidioc_g_frequency(file, fh, p);
1339                 if (!ret)
1340                         dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1341                                                 p->tuner,p->type,p->frequency);
1342                 break;
1343         }
1344         case VIDIOC_S_FREQUENCY:
1345         {
1346                 struct v4l2_frequency *p=arg;
1347                 if (!vfd->vidioc_s_frequency)
1348                         break;
1349                 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1350                                 p->tuner,p->type,p->frequency);
1351                 ret=vfd->vidioc_s_frequency(file, fh, p);
1352                 break;
1353         }
1354         case VIDIOC_G_SLICED_VBI_CAP:
1355         {
1356                 struct v4l2_sliced_vbi_cap *p=arg;
1357                 if (!vfd->vidioc_g_sliced_vbi_cap)
1358                         break;
1359                 ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
1360                 if (!ret)
1361                         dbgarg (cmd, "service_set=%d\n", p->service_set);
1362                 break;
1363         }
1364         case VIDIOC_LOG_STATUS:
1365         {
1366                 if (!vfd->vidioc_log_status)
1367                         break;
1368                 ret=vfd->vidioc_log_status(file, fh);
1369                 break;
1370         }
1371
1372         /* --- Others --------------------------------------------- */
1373
1374         default:
1375                 ret=v4l_compat_translate_ioctl(inode,file,cmd,arg,__video_do_ioctl);
1376         }
1377
1378         if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1379                 if (ret<0) {
1380                         printk ("%s: err:\n", vfd->name);
1381                         v4l_print_ioctl(vfd->name, cmd);
1382                 }
1383         }
1384
1385         return ret;
1386 }
1387
1388 int video_ioctl2 (struct inode *inode, struct file *file,
1389                unsigned int cmd, unsigned long arg)
1390 {
1391         char    sbuf[128];
1392         void    *mbuf = NULL;
1393         void    *parg = NULL;
1394         int     err  = -EINVAL;
1395         int     is_ext_ctrl;
1396         size_t  ctrls_size = 0;
1397         void __user *user_ptr = NULL;
1398
1399 #ifdef __OLD_VIDIOC_
1400         cmd = video_fix_command(cmd);
1401 #endif
1402         is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
1403                        cmd == VIDIOC_TRY_EXT_CTRLS);
1404
1405         /*  Copy arguments into temp kernel buffer  */
1406         switch (_IOC_DIR(cmd)) {
1407         case _IOC_NONE:
1408                 parg = NULL;
1409                 break;
1410         case _IOC_READ:
1411         case _IOC_WRITE:
1412         case (_IOC_WRITE | _IOC_READ):
1413                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1414                         parg = sbuf;
1415                 } else {
1416                         /* too big to allocate from stack */
1417                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
1418                         if (NULL == mbuf)
1419                                 return -ENOMEM;
1420                         parg = mbuf;
1421                 }
1422
1423                 err = -EFAULT;
1424                 if (_IOC_DIR(cmd) & _IOC_WRITE)
1425                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1426                                 goto out;
1427                 break;
1428         }
1429
1430         if (is_ext_ctrl) {
1431                 struct v4l2_ext_controls *p = parg;
1432
1433                 /* In case of an error, tell the caller that it wasn't
1434                    a specific control that caused it. */
1435                 p->error_idx = p->count;
1436                 user_ptr = (void __user *)p->controls;
1437                 if (p->count) {
1438                         ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
1439                         /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
1440                         mbuf = kmalloc(ctrls_size, GFP_KERNEL);
1441                         err = -ENOMEM;
1442                         if (NULL == mbuf)
1443                                 goto out_ext_ctrl;
1444                         err = -EFAULT;
1445                         if (copy_from_user(mbuf, user_ptr, ctrls_size))
1446                                 goto out_ext_ctrl;
1447                         p->controls = mbuf;
1448                 }
1449         }
1450
1451         /* Handles IOCTL */
1452         err = __video_do_ioctl(inode, file, cmd, parg);
1453         if (err == -ENOIOCTLCMD)
1454                 err = -EINVAL;
1455         if (is_ext_ctrl) {
1456                 struct v4l2_ext_controls *p = parg;
1457
1458                 p->controls = (void *)user_ptr;
1459                 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
1460                         err = -EFAULT;
1461                 goto out_ext_ctrl;
1462         }
1463         if (err < 0)
1464                 goto out;
1465
1466 out_ext_ctrl:
1467         /*  Copy results into user buffer  */
1468         switch (_IOC_DIR(cmd))
1469         {
1470         case _IOC_READ:
1471         case (_IOC_WRITE | _IOC_READ):
1472                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1473                         err = -EFAULT;
1474                 break;
1475         }
1476
1477 out:
1478         kfree(mbuf);
1479         return err;
1480 }
1481
1482
1483 static struct file_operations video_fops;
1484
1485 /**
1486  *      video_register_device - register video4linux devices
1487  *      @vfd:  video device structure we want to register
1488  *      @type: type of device to register
1489  *      @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
1490  *             -1 == first free)
1491  *
1492  *      The registration code assigns minor numbers based on the type
1493  *      requested. -ENFILE is returned in all the device slots for this
1494  *      category are full. If not then the minor field is set and the
1495  *      driver initialize function is called (if non %NULL).
1496  *
1497  *      Zero is returned on success.
1498  *
1499  *      Valid types are
1500  *
1501  *      %VFL_TYPE_GRABBER - A frame grabber
1502  *
1503  *      %VFL_TYPE_VTX - A teletext device
1504  *
1505  *      %VFL_TYPE_VBI - Vertical blank data (undecoded)
1506  *
1507  *      %VFL_TYPE_RADIO - A radio card
1508  */
1509
1510 int video_register_device(struct video_device *vfd, int type, int nr)
1511 {
1512         int i=0;
1513         int base;
1514         int end;
1515         char *name_base;
1516
1517         switch(type)
1518         {
1519                 case VFL_TYPE_GRABBER:
1520                         base=MINOR_VFL_TYPE_GRABBER_MIN;
1521                         end=MINOR_VFL_TYPE_GRABBER_MAX+1;
1522                         name_base = "video";
1523                         break;
1524                 case VFL_TYPE_VTX:
1525                         base=MINOR_VFL_TYPE_VTX_MIN;
1526                         end=MINOR_VFL_TYPE_VTX_MAX+1;
1527                         name_base = "vtx";
1528                         break;
1529                 case VFL_TYPE_VBI:
1530                         base=MINOR_VFL_TYPE_VBI_MIN;
1531                         end=MINOR_VFL_TYPE_VBI_MAX+1;
1532                         name_base = "vbi";
1533                         break;
1534                 case VFL_TYPE_RADIO:
1535                         base=MINOR_VFL_TYPE_RADIO_MIN;
1536                         end=MINOR_VFL_TYPE_RADIO_MAX+1;
1537                         name_base = "radio";
1538                         break;
1539                 default:
1540                         return -1;
1541         }
1542
1543         /* pick a minor number */
1544         mutex_lock(&videodev_lock);
1545         if (nr >= 0  &&  nr < end-base) {
1546                 /* use the one the driver asked for */
1547                 i = base+nr;
1548                 if (NULL != video_device[i]) {
1549                         mutex_unlock(&videodev_lock);
1550                         return -ENFILE;
1551                 }
1552         } else {
1553                 /* use first free */
1554                 for(i=base;i<end;i++)
1555                         if (NULL == video_device[i])
1556                                 break;
1557                 if (i == end) {
1558                         mutex_unlock(&videodev_lock);
1559                         return -ENFILE;
1560                 }
1561         }
1562         video_device[i]=vfd;
1563         vfd->minor=i;
1564         mutex_unlock(&videodev_lock);
1565
1566         sprintf(vfd->devfs_name, "v4l/%s%d", name_base, i - base);
1567         devfs_mk_cdev(MKDEV(VIDEO_MAJOR, vfd->minor),
1568                         S_IFCHR | S_IRUSR | S_IWUSR, vfd->devfs_name);
1569         mutex_init(&vfd->lock);
1570
1571         /* sysfs class */
1572         memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
1573         if (vfd->dev)
1574                 vfd->class_dev.dev = vfd->dev;
1575         vfd->class_dev.class       = &video_class;
1576         vfd->class_dev.devt        = MKDEV(VIDEO_MAJOR, vfd->minor);
1577         strlcpy(vfd->class_dev.class_id, vfd->devfs_name + 4, BUS_ID_SIZE);
1578         class_device_register(&vfd->class_dev);
1579         class_device_create_file(&vfd->class_dev,
1580                                 &class_device_attr_name);
1581
1582 #if 1
1583         /* needed until all drivers are fixed */
1584         if (!vfd->release)
1585                 printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
1586                        "Please fix your driver for proper sysfs support, see "
1587                        "http://lwn.net/Articles/36850/\n", vfd->name);
1588 #endif
1589         return 0;
1590 }
1591
1592 /**
1593  *      video_unregister_device - unregister a video4linux device
1594  *      @vfd: the device to unregister
1595  *
1596  *      This unregisters the passed device and deassigns the minor
1597  *      number. Future open calls will be met with errors.
1598  */
1599
1600 void video_unregister_device(struct video_device *vfd)
1601 {
1602         mutex_lock(&videodev_lock);
1603         if(video_device[vfd->minor]!=vfd)
1604                 panic("videodev: bad unregister");
1605
1606         devfs_remove(vfd->devfs_name);
1607         video_device[vfd->minor]=NULL;
1608         class_device_unregister(&vfd->class_dev);
1609         mutex_unlock(&videodev_lock);
1610 }
1611
1612 /*
1613  * Video fs operations
1614  */
1615 static struct file_operations video_fops=
1616 {
1617         .owner          = THIS_MODULE,
1618         .llseek         = no_llseek,
1619         .open           = video_open,
1620 };
1621
1622 /*
1623  *      Initialise video for linux
1624  */
1625
1626 static int __init videodev_init(void)
1627 {
1628         int ret;
1629
1630         printk(KERN_INFO "Linux video capture interface: v2.00\n");
1631         if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
1632                 printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
1633                 return -EIO;
1634         }
1635
1636         ret = class_register(&video_class);
1637         if (ret < 0) {
1638                 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1639                 printk(KERN_WARNING "video_dev: class_register failed\n");
1640                 return -EIO;
1641         }
1642
1643         return 0;
1644 }
1645
1646 static void __exit videodev_exit(void)
1647 {
1648         class_unregister(&video_class);
1649         unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1650 }
1651
1652 module_init(videodev_init)
1653 module_exit(videodev_exit)
1654
1655 EXPORT_SYMBOL(video_register_device);
1656 EXPORT_SYMBOL(video_unregister_device);
1657 EXPORT_SYMBOL(video_devdata);
1658 EXPORT_SYMBOL(video_usercopy);
1659 EXPORT_SYMBOL(video_exclusive_open);
1660 EXPORT_SYMBOL(video_exclusive_release);
1661 EXPORT_SYMBOL(video_ioctl2);
1662 EXPORT_SYMBOL(video_device_alloc);
1663 EXPORT_SYMBOL(video_device_release);
1664
1665 MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
1666 MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
1667 MODULE_LICENSE("GPL");
1668
1669
1670 /*
1671  * Local variables:
1672  * c-basic-offset: 8
1673  * End:
1674  */