]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/media/video/videodev.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (5982): Dev.c: memset fix
[mirror_ubuntu-artful-kernel.git] / drivers / media / video / videodev.c
CommitLineData
1da177e4 1/*
401998fa 2 * Video capture interface for Linux version 2
1da177e4 3 *
401998fa
MCC		 4 * A generic video device interface for the LINUX operating system
5 * using a set of device structures/vectors for low level operations.
1da177e4 6 *
401998fa
MCC		 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.
1da177e4 11 *
401998fa
MCC		 12 * Authors: Alan Cox, <alan@redhat.com> (version 1)
13 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
1da177e4
LT		 14 *
15 * Fixes: 20000516 Claudio Matsuoka <claudio@conectiva.com>
16 * - Added procfs support
17 */
18
401998fa 19#define dbgarg(cmd, fmt, arg...) \
474ce781 20 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \
401998fa
MCC		 21 printk (KERN_DEBUG "%s: ", vfd->name); \
22 v4l_printk_ioctl(cmd); \
474ce781
ES		 23 printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg); \
24 }
401998fa
MCC		 25
26#define dbgarg2(fmt, arg...) \
27 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
28 printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
29
1da177e4
LT		 30#include <linux/module.h>
31#include <linux/types.h>
32#include <linux/kernel.h>
1da177e4
LT		 33#include <linux/mm.h>
34#include <linux/string.h>
35#include <linux/errno.h>
36#include <linux/init.h>
37#include <linux/kmod.h>
38#include <linux/slab.h>
1da177e4
LT		 39#include <asm/uaccess.h>
40#include <asm/system.h>
1da177e4 41
401998fa
MCC		 42#define __OLD_VIDIOC_ /* To allow fixing old calls*/
43#include <linux/videodev2.h>
44
45#ifdef CONFIG_VIDEO_V4L1
1da177e4 46#include <linux/videodev.h>
401998fa
MCC		 47#endif
48#include <media/v4l2-common.h>
1da177e4
LT		 49
50#define VIDEO_NUM_DEVICES 256
51#define VIDEO_NAME "video4linux"
52
53/*
54 * sysfs stuff
55 */
56
57static ssize_t show_name(struct class_device *cd, char *buf)
58{
401998fa
MCC		 59 struct video_device *vfd = container_of(cd, struct video_device,
60 class_dev);
1da177e4
LT		 61 return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
62}
63
64static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
65
66struct video_device *video_device_alloc(void)
67{
68 struct video_device *vfd;
69
7408187d 70 vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
1da177e4
LT		 71 return vfd;
72}
73
74void video_device_release(struct video_device *vfd)
75{
76 kfree(vfd);
77}
78
79static void video_release(struct class_device *cd)
80{
401998fa
MCC		 81 struct video_device *vfd = container_of(cd, struct video_device,
82 class_dev);
1da177e4 83
d21838dd 84#if 1
50c25fff 85 /* needed until all drivers are fixed */
1da177e4
LT		 86 if (!vfd->release)
87 return;
88#endif
89 vfd->release(vfd);
90}
91
92static struct class video_class = {
938606b0 93 .name = VIDEO_NAME,
1da177e4
LT		 94 .release = video_release,
95};
96
97/*
938606b0 98 * Active devices
1da177e4 99 */
938606b0 100
1da177e4 101static struct video_device *video_device[VIDEO_NUM_DEVICES];
1e4baed3 102static DEFINE_MUTEX(videodev_lock);
1da177e4
LT		 103
104struct video_device* video_devdata(struct file *file)
105{
723731b2 106 return video_device[iminor(file->f_path.dentry->d_inode)];
1da177e4
LT		 107}
108
109/*
401998fa 110 * Open a video device - FIXME: Obsoleted
1da177e4
LT		 111 */
112static int video_open(struct inode *inode, struct file *file)
113{
114 unsigned int minor = iminor(inode);
115 int err = 0;
116 struct video_device *vfl;
99ac48f5 117 const struct file_operations *old_fops;
938606b0 118
1da177e4
LT		 119 if(minor>=VIDEO_NUM_DEVICES)
120 return -ENODEV;
1e4baed3 121 mutex_lock(&videodev_lock);
1da177e4
LT		 122 vfl=video_device[minor];
123 if(vfl==NULL) {
1e4baed3 124 mutex_unlock(&videodev_lock);
1da177e4 125 request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
1e4baed3 126 mutex_lock(&videodev_lock);
1da177e4
LT		 127 vfl=video_device[minor];
128 if (vfl==NULL) {
1e4baed3 129 mutex_unlock(&videodev_lock);
1da177e4
LT		 130 return -ENODEV;
131 }
132 }
133 old_fops = file->f_op;
134 file->f_op = fops_get(vfl->fops);
135 if(file->f_op->open)
136 err = file->f_op->open(inode,file);
137 if (err) {
138 fops_put(file->f_op);
139 file->f_op = fops_get(old_fops);
140 }
141 fops_put(old_fops);
1e4baed3 142 mutex_unlock(&videodev_lock);
1da177e4
LT		 143 return err;
144}
145
146/*
147 * helper function -- handles userspace copying for ioctl arguments
148 */
149
401998fa 150#ifdef __OLD_VIDIOC_
1da177e4
LT		 151static unsigned int
152video_fix_command(unsigned int cmd)
153{
154 switch (cmd) {
155 case VIDIOC_OVERLAY_OLD:
156 cmd = VIDIOC_OVERLAY;
157 break;
158 case VIDIOC_S_PARM_OLD:
159 cmd = VIDIOC_S_PARM;
160 break;
161 case VIDIOC_S_CTRL_OLD:
162 cmd = VIDIOC_S_CTRL;
163 break;
164 case VIDIOC_G_AUDIO_OLD:
165 cmd = VIDIOC_G_AUDIO;
166 break;
167 case VIDIOC_G_AUDOUT_OLD:
168 cmd = VIDIOC_G_AUDOUT;
169 break;
170 case VIDIOC_CROPCAP_OLD:
171 cmd = VIDIOC_CROPCAP;
172 break;
173 }
174 return cmd;
175}
401998fa 176#endif
1da177e4 177
401998fa
MCC		 178/*
179 * Obsolete usercopy function - Should be removed soon
180 */
1da177e4
LT		 181int
182video_usercopy(struct inode *inode, struct file *file,
183 unsigned int cmd, unsigned long arg,
184 int (*func)(struct inode *inode, struct file *file,
185 unsigned int cmd, void *arg))
186{
187 char sbuf[128];
188 void *mbuf = NULL;
189 void *parg = NULL;
190 int err = -EINVAL;
05976914
HV		 191 int is_ext_ctrl;
192 size_t ctrls_size = 0;
193 void __user *user_ptr = NULL;
1da177e4 194
401998fa 195#ifdef __OLD_VIDIOC_
1da177e4 196 cmd = video_fix_command(cmd);
401998fa 197#endif
05976914
HV		 198 is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
199 cmd == VIDIOC_TRY_EXT_CTRLS);
1da177e4
LT		 200
201 /* Copy arguments into temp kernel buffer */
202 switch (_IOC_DIR(cmd)) {
203 case _IOC_NONE:
204 parg = NULL;
205 break;
206 case _IOC_READ:
207 case _IOC_WRITE:
208 case (_IOC_WRITE | _IOC_READ):
209 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
210 parg = sbuf;
211 } else {
212 /* too big to allocate from stack */
213 mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
214 if (NULL == mbuf)
215 return -ENOMEM;
216 parg = mbuf;
217 }
938606b0 218
1da177e4
LT		 219 err = -EFAULT;
220 if (_IOC_DIR(cmd) & _IOC_WRITE)
05976914 221 if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1da177e4
LT		 222 goto out;
223 break;
224 }
05976914
HV		 225 if (is_ext_ctrl) {
226 struct v4l2_ext_controls *p = parg;
227
228 /* In case of an error, tell the caller that it wasn't
229 a specific control that caused it. */
230 p->error_idx = p->count;
231 user_ptr = (void __user *)p->controls;
232 if (p->count) {
233 ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
234 /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
235 mbuf = kmalloc(ctrls_size, GFP_KERNEL);
236 err = -ENOMEM;
237 if (NULL == mbuf)
238 goto out_ext_ctrl;
239 err = -EFAULT;
240 if (copy_from_user(mbuf, user_ptr, ctrls_size))
241 goto out_ext_ctrl;
242 p->controls = mbuf;
243 }
244 }
1da177e4
LT		 245
246 /* call driver */
247 err = func(inode, file, cmd, parg);
248 if (err == -ENOIOCTLCMD)
249 err = -EINVAL;
05976914
HV		 250 if (is_ext_ctrl) {
251 struct v4l2_ext_controls *p = parg;
252
253 p->controls = (void *)user_ptr;
254 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
255 err = -EFAULT;
256 goto out_ext_ctrl;
257 }
1da177e4
LT		 258 if (err < 0)
259 goto out;
260
05976914 261out_ext_ctrl:
1da177e4
LT		 262 /* Copy results into user buffer */
263 switch (_IOC_DIR(cmd))
264 {
265 case _IOC_READ:
266 case (_IOC_WRITE | _IOC_READ):
267 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
268 err = -EFAULT;
269 break;
270 }
271
272out:
2ea75330 273 kfree(mbuf);
1da177e4
LT		 274 return err;
275}
276
277/*
278 * open/release helper functions -- handle exclusive opens
401998fa 279 * Should be removed soon
1da177e4
LT		 280 */
281int video_exclusive_open(struct inode *inode, struct file *file)
282{
283 struct video_device *vfl = video_devdata(file);
284 int retval = 0;
285
3593cab5 286 mutex_lock(&vfl->lock);
1da177e4
LT		 287 if (vfl->users) {
288 retval = -EBUSY;
289 } else {
290 vfl->users++;
291 }
3593cab5 292 mutex_unlock(&vfl->lock);
1da177e4
LT		 293 return retval;
294}
295
296int video_exclusive_release(struct inode *inode, struct file *file)
297{
298 struct video_device *vfl = video_devdata(file);
938606b0 299
1da177e4
LT		 300 vfl->users--;
301 return 0;
302}
303
401998fa
MCC		 304static char *v4l2_memory_names[] = {
305 [V4L2_MEMORY_MMAP] = "mmap",
306 [V4L2_MEMORY_USERPTR] = "userptr",
307 [V4L2_MEMORY_OVERLAY] = "overlay",
308};
309
310
311/* FIXME: Those stuff are replicated also on v4l2-common.c */
312static char *v4l2_type_names_FIXME[] = {
313 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
314 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
315 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out",
316 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
317 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
318 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
319 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",
b2787845 320 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "video-out-over",
401998fa
MCC		 321 [V4L2_BUF_TYPE_PRIVATE] = "private",
322};
323
324static char *v4l2_field_names_FIXME[] = {
325 [V4L2_FIELD_ANY] = "any",
326 [V4L2_FIELD_NONE] = "none",
327 [V4L2_FIELD_TOP] = "top",
328 [V4L2_FIELD_BOTTOM] = "bottom",
329 [V4L2_FIELD_INTERLACED] = "interlaced",
330 [V4L2_FIELD_SEQ_TB] = "seq-tb",
331 [V4L2_FIELD_SEQ_BT] = "seq-bt",
332 [V4L2_FIELD_ALTERNATE] = "alternate",
b2787845
HV		 333 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
334 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
401998fa
MCC		 335};
336
337#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
338
339static void dbgbuf(unsigned int cmd, struct video_device *vfd,
340 struct v4l2_buffer *p)
341{
342 struct v4l2_timecode *tc=&p->timecode;
343
344 dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
345 "bytesused=%d, flags=0x%08d, "
bf5dbed6 346 "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n",
401998fa
MCC		 347 (p->timestamp.tv_sec/3600),
348 (int)(p->timestamp.tv_sec/60)%60,
349 (int)(p->timestamp.tv_sec%60),
350 p->timestamp.tv_usec,
351 p->index,
352 prt_names(p->type,v4l2_type_names_FIXME),
353 p->bytesused,p->flags,
354 p->field,p->sequence,
355 prt_names(p->memory,v4l2_memory_names),
bf5dbed6 356 p->m.userptr, p->length);
401998fa
MCC		 357 dbgarg2 ("timecode= %02d:%02d:%02d type=%d, "
358 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
359 tc->hours,tc->minutes,tc->seconds,
c18cb01c 360 tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
401998fa
MCC		 361}
362
363static inline void dbgrect(struct video_device *vfd, char *s,
364 struct v4l2_rect *r)
365{
366 dbgarg2 ("%sRect start at %dx%d, size= %dx%d\n", s, r->left, r->top,
367 r->width, r->height);
368};
369
370static inline void v4l_print_pix_fmt (struct video_device *vfd,
371 struct v4l2_pix_format *fmt)
372{
bf5dbed6 373 dbgarg2 ("width=%d, height=%d, format=%c%c%c%c, field=%s, "
401998fa 374 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
bf5dbed6
MCC		 375 fmt->width,fmt->height,
376 (fmt->pixelformat & 0xff),
377 (fmt->pixelformat >> 8) & 0xff,
378 (fmt->pixelformat >> 16) & 0xff,
379 (fmt->pixelformat >> 24) & 0xff,
401998fa
MCC		 380 prt_names(fmt->field,v4l2_field_names_FIXME),
381 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
382};
383
384
385static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
386{
387 switch (type) {
388 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
389 if (vfd->vidioc_try_fmt_cap)
390 return (0);
391 break;
392 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
393 if (vfd->vidioc_try_fmt_overlay)
394 return (0);
395 break;
396 case V4L2_BUF_TYPE_VBI_CAPTURE:
397 if (vfd->vidioc_try_fmt_vbi)
398 return (0);
399 break;
400 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
401 if (vfd->vidioc_try_fmt_vbi_output)
402 return (0);
403 break;
404 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
405 if (vfd->vidioc_try_fmt_vbi_capture)
406 return (0);
407 break;
408 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
409 if (vfd->vidioc_try_fmt_video_output)
410 return (0);
411 break;
412 case V4L2_BUF_TYPE_VBI_OUTPUT:
413 if (vfd->vidioc_try_fmt_vbi_output)
414 return (0);
415 break;
b2787845
HV		 416 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
417 if (vfd->vidioc_try_fmt_output_overlay)
418 return (0);
419 break;
401998fa
MCC		 420 case V4L2_BUF_TYPE_PRIVATE:
421 if (vfd->vidioc_try_fmt_type_private)
422 return (0);
423 break;
424 }
425 return (-EINVAL);
426}
427
428static int __video_do_ioctl(struct inode *inode, struct file *file,
429 unsigned int cmd, void *arg)
430{
431 struct video_device *vfd = video_devdata(file);
432 void *fh = file->private_data;
433 int ret = -EINVAL;
434
435 if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
57e45b31 436 !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
401998fa
MCC		 437 v4l_print_ioctl(vfd->name, cmd);
438 }
439
1088b137 440#ifdef CONFIG_VIDEO_V4L1_COMPAT
452c0fb4
MCC		 441 /***********************************************************
442 Handles calls to the obsoleted V4L1 API
443 Due to the nature of VIDIOCGMBUF, each driver that supports
444 V4L1 should implement its own handler for this ioctl.
445 ***********************************************************/
446
1088b137
SR		 447 /* --- streaming capture ------------------------------------- */
448 if (cmd == VIDIOCGMBUF) {
449 struct video_mbuf *p=arg;
450
473c653f 451 memset(p, 0, sizeof(*p));
1088b137
SR		 452
453 if (!vfd->vidiocgmbuf)
454 return ret;
455 ret=vfd->vidiocgmbuf(file, fh, p);
456 if (!ret)
457 dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
458 p->size, p->frames,
459 (unsigned long)p->offsets);
460 return ret;
461 }
1088b137 462
452c0fb4
MCC		 463 /********************************************************
464 All other V4L1 calls are handled by v4l1_compat module.
465 Those calls will be translated into V4L2 calls, and
466 __video_do_ioctl will be called again, with one or more
467 V4L2 ioctls.
468 ********************************************************/
207705cd
MCC		 469 if (_IOC_TYPE(cmd)=='v')
470 return v4l_compat_translate_ioctl(inode,file,cmd,arg,
471 __video_do_ioctl);
452c0fb4 472#endif
207705cd 473
401998fa
MCC		 474 switch(cmd) {
475 /* --- capabilities ------------------------------------------ */
476 case VIDIOC_QUERYCAP:
477 {
478 struct v4l2_capability *cap = (struct v4l2_capability*)arg;
479 memset(cap, 0, sizeof(*cap));
480
481 if (!vfd->vidioc_querycap)
482 break;
483
484 ret=vfd->vidioc_querycap(file, fh, cap);
485 if (!ret)
486 dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
487 "version=0x%08x, "
488 "capabilities=0x%08x\n",
489 cap->driver,cap->card,cap->bus_info,
490 cap->version,
491 cap->capabilities);
492 break;
493 }
494
495 /* --- priority ------------------------------------------ */
496 case VIDIOC_G_PRIORITY:
497 {
498 enum v4l2_priority *p=arg;
499
500 if (!vfd->vidioc_g_priority)
501 break;
502 ret=vfd->vidioc_g_priority(file, fh, p);
503 if (!ret)
504 dbgarg(cmd, "priority is %d\n", *p);
505 break;
506 }
507 case VIDIOC_S_PRIORITY:
508 {
509 enum v4l2_priority *p=arg;
510
511 if (!vfd->vidioc_s_priority)
512 break;
513 dbgarg(cmd, "setting priority to %d\n", *p);
514 ret=vfd->vidioc_s_priority(file, fh, *p);
515 break;
516 }
517
518 /* --- capture ioctls ---------------------------------------- */
519 case VIDIOC_ENUM_FMT:
520 {
521 struct v4l2_fmtdesc *f = arg;
522 enum v4l2_buf_type type;
523 unsigned int index;
524
525 index = f->index;
526 type = f->type;
527 memset(f,0,sizeof(*f));
528 f->index = index;
529 f->type = type;
530
531 switch (type) {
532 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
533 if (vfd->vidioc_enum_fmt_cap)
534 ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
535 break;
536 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
537 if (vfd->vidioc_enum_fmt_overlay)
538 ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
539 break;
540 case V4L2_BUF_TYPE_VBI_CAPTURE:
541 if (vfd->vidioc_enum_fmt_vbi)
542 ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
543 break;
544 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
545 if (vfd->vidioc_enum_fmt_vbi_output)
546 ret=vfd->vidioc_enum_fmt_vbi_output(file,
547 fh, f);
548 break;
549 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
550 if (vfd->vidioc_enum_fmt_vbi_capture)
551 ret=vfd->vidioc_enum_fmt_vbi_capture(file,
552 fh, f);
553 break;
554 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
555 if (vfd->vidioc_enum_fmt_video_output)
556 ret=vfd->vidioc_enum_fmt_video_output(file,
557 fh, f);
558 break;
559 case V4L2_BUF_TYPE_VBI_OUTPUT:
560 if (vfd->vidioc_enum_fmt_vbi_output)
561 ret=vfd->vidioc_enum_fmt_vbi_output(file,
562 fh, f);
563 break;
b2787845
HV		 564 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
565 if (vfd->vidioc_enum_fmt_output_overlay)
566 ret=vfd->vidioc_enum_fmt_output_overlay(file, fh, f);
567 break;
401998fa
MCC		 568 case V4L2_BUF_TYPE_PRIVATE:
569 if (vfd->vidioc_enum_fmt_type_private)
570 ret=vfd->vidioc_enum_fmt_type_private(file,
571 fh, f);
572 break;
573 }
574 if (!ret)
575 dbgarg (cmd, "index=%d, type=%d, flags=%d, "
bf5dbed6 576 "pixelformat=%c%c%c%c, description='%s'\n",
401998fa 577 f->index, f->type, f->flags,
bf5dbed6
MCC		 578 (f->pixelformat & 0xff),
579 (f->pixelformat >> 8) & 0xff,
580 (f->pixelformat >> 16) & 0xff,
581 (f->pixelformat >> 24) & 0xff,
582 f->description);
401998fa
MCC		 583 break;
584 }
585 case VIDIOC_G_FMT:
586 {
587 struct v4l2_format *f = (struct v4l2_format *)arg;
588 enum v4l2_buf_type type=f->type;
589
590 memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
591 f->type=type;
592
593 /* FIXME: Should be one dump per type */
594 dbgarg (cmd, "type=%s\n", prt_names(type,
595 v4l2_type_names_FIXME));
596
597 switch (type) {
598 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
599 if (vfd->vidioc_g_fmt_cap)
600 ret=vfd->vidioc_g_fmt_cap(file, fh, f);
601 if (!ret)
602 v4l_print_pix_fmt(vfd,&f->fmt.pix);
603 break;
604 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
605 if (vfd->vidioc_g_fmt_overlay)
606 ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
607 break;
608 case V4L2_BUF_TYPE_VBI_CAPTURE:
609 if (vfd->vidioc_g_fmt_vbi)
610 ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
611 break;
612 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
613 if (vfd->vidioc_g_fmt_vbi_output)
614 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
615 break;
616 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
617 if (vfd->vidioc_g_fmt_vbi_capture)
618 ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
619 break;
620 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
621 if (vfd->vidioc_g_fmt_video_output)
622 ret=vfd->vidioc_g_fmt_video_output(file,
623 fh, f);
624 break;
b2787845
HV		 625 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
626 if (vfd->vidioc_g_fmt_output_overlay)
627 ret=vfd->vidioc_g_fmt_output_overlay(file, fh, f);
628 break;
401998fa
MCC		 629 case V4L2_BUF_TYPE_VBI_OUTPUT:
630 if (vfd->vidioc_g_fmt_vbi_output)
631 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
632 break;
633 case V4L2_BUF_TYPE_PRIVATE:
634 if (vfd->vidioc_g_fmt_type_private)
635 ret=vfd->vidioc_g_fmt_type_private(file,
636 fh, f);
637 break;
638 }
639
640 break;
641 }
642 case VIDIOC_S_FMT:
643 {
644 struct v4l2_format *f = (struct v4l2_format *)arg;
645
646 /* FIXME: Should be one dump per type */
647 dbgarg (cmd, "type=%s\n", prt_names(f->type,
648 v4l2_type_names_FIXME));
649
650 switch (f->type) {
651 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
652 v4l_print_pix_fmt(vfd,&f->fmt.pix);
653 if (vfd->vidioc_s_fmt_cap)
654 ret=vfd->vidioc_s_fmt_cap(file, fh, f);
655 break;
656 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
657 if (vfd->vidioc_s_fmt_overlay)
658 ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
659 break;
660 case V4L2_BUF_TYPE_VBI_CAPTURE:
661 if (vfd->vidioc_s_fmt_vbi)
662 ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
663 break;
664 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
665 if (vfd->vidioc_s_fmt_vbi_output)
666 ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
667 break;
668 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
669 if (vfd->vidioc_s_fmt_vbi_capture)
670 ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
671 break;
672 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
673 if (vfd->vidioc_s_fmt_video_output)
674 ret=vfd->vidioc_s_fmt_video_output(file,
675 fh, f);
676 break;
b2787845
HV		 677 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
678 if (vfd->vidioc_s_fmt_output_overlay)
679 ret=vfd->vidioc_s_fmt_output_overlay(file, fh, f);
680 break;
401998fa
MCC		 681 case V4L2_BUF_TYPE_VBI_OUTPUT:
682 if (vfd->vidioc_s_fmt_vbi_output)
683 ret=vfd->vidioc_s_fmt_vbi_output(file,
684 fh, f);
685 break;
686 case V4L2_BUF_TYPE_PRIVATE:
687 if (vfd->vidioc_s_fmt_type_private)
688 ret=vfd->vidioc_s_fmt_type_private(file,
689 fh, f);
690 break;
691 }
692 break;
693 }
694 case VIDIOC_TRY_FMT:
695 {
696 struct v4l2_format *f = (struct v4l2_format *)arg;
697
698 /* FIXME: Should be one dump per type */
699 dbgarg (cmd, "type=%s\n", prt_names(f->type,
700 v4l2_type_names_FIXME));
701 switch (f->type) {
702 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
703 if (vfd->vidioc_try_fmt_cap)
704 ret=vfd->vidioc_try_fmt_cap(file, fh, f);
705 if (!ret)
706 v4l_print_pix_fmt(vfd,&f->fmt.pix);
707 break;
708 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
709 if (vfd->vidioc_try_fmt_overlay)
710 ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
711 break;
712 case V4L2_BUF_TYPE_VBI_CAPTURE:
713 if (vfd->vidioc_try_fmt_vbi)
714 ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
715 break;
716 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
717 if (vfd->vidioc_try_fmt_vbi_output)
718 ret=vfd->vidioc_try_fmt_vbi_output(file,
719 fh, f);
720 break;
721 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
722 if (vfd->vidioc_try_fmt_vbi_capture)
723 ret=vfd->vidioc_try_fmt_vbi_capture(file,
724 fh, f);
725 break;
726 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
727 if (vfd->vidioc_try_fmt_video_output)
728 ret=vfd->vidioc_try_fmt_video_output(file,
729 fh, f);
730 break;
b2787845
HV		 731 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
732 if (vfd->vidioc_try_fmt_output_overlay)
733 ret=vfd->vidioc_try_fmt_output_overlay(file, fh, f);
734 break;
401998fa
MCC		 735 case V4L2_BUF_TYPE_VBI_OUTPUT:
736 if (vfd->vidioc_try_fmt_vbi_output)
737 ret=vfd->vidioc_try_fmt_vbi_output(file,
738 fh, f);
739 break;
740 case V4L2_BUF_TYPE_PRIVATE:
741 if (vfd->vidioc_try_fmt_type_private)
742 ret=vfd->vidioc_try_fmt_type_private(file,
743 fh, f);
744 break;
745 }
746
747 break;
748 }
749 /* FIXME: Those buf reqs could be handled here,
750 with some changes on videobuf to allow its header to be included at
751 videodev2.h or being merged at videodev2.
752 */
753 case VIDIOC_REQBUFS:
754 {
755 struct v4l2_requestbuffers *p=arg;
756
757 if (!vfd->vidioc_reqbufs)
758 break;
759 ret = check_fmt (vfd, p->type);
760 if (ret)
761 break;
762
763 ret=vfd->vidioc_reqbufs(file, fh, p);
764 dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
765 p->count,
766 prt_names(p->type,v4l2_type_names_FIXME),
767 prt_names(p->memory,v4l2_memory_names));
768 break;
769 }
770 case VIDIOC_QUERYBUF:
771 {
772 struct v4l2_buffer *p=arg;
773
774 if (!vfd->vidioc_querybuf)
775 break;
776 ret = check_fmt (vfd, p->type);
777 if (ret)
778 break;
779
780 ret=vfd->vidioc_querybuf(file, fh, p);
781 if (!ret)
782 dbgbuf(cmd,vfd,p);
783 break;
784 }
785 case VIDIOC_QBUF:
786 {
787 struct v4l2_buffer *p=arg;
788
789 if (!vfd->vidioc_qbuf)
790 break;
791 ret = check_fmt (vfd, p->type);
792 if (ret)
793 break;
794
795 ret=vfd->vidioc_qbuf(file, fh, p);
796 if (!ret)
797 dbgbuf(cmd,vfd,p);
798 break;
799 }
800 case VIDIOC_DQBUF:
801 {
802 struct v4l2_buffer *p=arg;
c93a5c34 803 if (!vfd->vidioc_dqbuf)
401998fa
MCC		 804 break;
805 ret = check_fmt (vfd, p->type);
806 if (ret)
807 break;
808
c93a5c34 809 ret=vfd->vidioc_dqbuf(file, fh, p);
401998fa
MCC		 810 if (!ret)
811 dbgbuf(cmd,vfd,p);
812 break;
813 }
814 case VIDIOC_OVERLAY:
815 {
816 int *i = arg;
817
818 if (!vfd->vidioc_overlay)
819 break;
820 dbgarg (cmd, "value=%d\n",*i);
821 ret=vfd->vidioc_overlay(file, fh, *i);
822 break;
823 }
401998fa
MCC		 824 case VIDIOC_G_FBUF:
825 {
826 struct v4l2_framebuffer *p=arg;
827 if (!vfd->vidioc_g_fbuf)
828 break;
829 ret=vfd->vidioc_g_fbuf(file, fh, arg);
830 if (!ret) {
831 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
832 p->capability,p->flags,
833 (unsigned long)p->base);
834 v4l_print_pix_fmt (vfd, &p->fmt);
835 }
836 break;
837 }
838 case VIDIOC_S_FBUF:
839 {
840 struct v4l2_framebuffer *p=arg;
841 if (!vfd->vidioc_s_fbuf)
842 break;
843
844 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
845 p->capability,p->flags,(unsigned long)p->base);
846 v4l_print_pix_fmt (vfd, &p->fmt);
847 ret=vfd->vidioc_s_fbuf(file, fh, arg);
848
849 break;
850 }
851 case VIDIOC_STREAMON:
852 {
853 enum v4l2_buf_type i = *(int *)arg;
854 if (!vfd->vidioc_streamon)
855 break;
856 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
857 ret=vfd->vidioc_streamon(file, fh,i);
858 break;
859 }
860 case VIDIOC_STREAMOFF:
861 {
862 enum v4l2_buf_type i = *(int *)arg;
863
864 if (!vfd->vidioc_streamoff)
865 break;
866 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
867 ret=vfd->vidioc_streamoff(file, fh, i);
868 break;
869 }
870 /* ---------- tv norms ---------- */
871 case VIDIOC_ENUMSTD:
872 {
873 struct v4l2_standard *p = arg;
e75f9cee
MCC		 874 v4l2_std_id id = vfd->tvnorms,curr_id=0;
875 unsigned int index = p->index,i;
401998fa 876
e75f9cee
MCC		 877 if (index<0) {
878 ret=-EINVAL;
401998fa
MCC		 879 break;
880 }
881
e75f9cee
MCC		 882 /* Return norm array on a canonical way */
883 for (i=0;i<= index && id; i++) {
884 if ( (id & V4L2_STD_PAL) == V4L2_STD_PAL) {
885 curr_id = V4L2_STD_PAL;
886 } else if ( (id & V4L2_STD_PAL_BG) == V4L2_STD_PAL_BG) {
887 curr_id = V4L2_STD_PAL_BG;
888 } else if ( (id & V4L2_STD_PAL_DK) == V4L2_STD_PAL_DK) {
889 curr_id = V4L2_STD_PAL_DK;
890 } else if ( (id & V4L2_STD_PAL_B) == V4L2_STD_PAL_B) {
891 curr_id = V4L2_STD_PAL_B;
892 } else if ( (id & V4L2_STD_PAL_B1) == V4L2_STD_PAL_B1) {
893 curr_id = V4L2_STD_PAL_B1;
894 } else if ( (id & V4L2_STD_PAL_G) == V4L2_STD_PAL_G) {
895 curr_id = V4L2_STD_PAL_G;
896 } else if ( (id & V4L2_STD_PAL_H) == V4L2_STD_PAL_H) {
897 curr_id = V4L2_STD_PAL_H;
898 } else if ( (id & V4L2_STD_PAL_I) == V4L2_STD_PAL_I) {
899 curr_id = V4L2_STD_PAL_I;
900 } else if ( (id & V4L2_STD_PAL_D) == V4L2_STD_PAL_D) {
901 curr_id = V4L2_STD_PAL_D;
902 } else if ( (id & V4L2_STD_PAL_D1) == V4L2_STD_PAL_D1) {
903 curr_id = V4L2_STD_PAL_D1;
904 } else if ( (id & V4L2_STD_PAL_K) == V4L2_STD_PAL_K) {
905 curr_id = V4L2_STD_PAL_K;
906 } else if ( (id & V4L2_STD_PAL_M) == V4L2_STD_PAL_M) {
907 curr_id = V4L2_STD_PAL_M;
908 } else if ( (id & V4L2_STD_PAL_N) == V4L2_STD_PAL_N) {
909 curr_id = V4L2_STD_PAL_N;
910 } else if ( (id & V4L2_STD_PAL_Nc) == V4L2_STD_PAL_Nc) {
911 curr_id = V4L2_STD_PAL_Nc;
912 } else if ( (id & V4L2_STD_PAL_60) == V4L2_STD_PAL_60) {
913 curr_id = V4L2_STD_PAL_60;
914 } else if ( (id & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
915 curr_id = V4L2_STD_NTSC;
916 } else if ( (id & V4L2_STD_NTSC_M) == V4L2_STD_NTSC_M) {
917 curr_id = V4L2_STD_NTSC_M;
918 } else if ( (id & V4L2_STD_NTSC_M_JP) == V4L2_STD_NTSC_M_JP) {
919 curr_id = V4L2_STD_NTSC_M_JP;
920 } else if ( (id & V4L2_STD_NTSC_443) == V4L2_STD_NTSC_443) {
921 curr_id = V4L2_STD_NTSC_443;
922 } else if ( (id & V4L2_STD_NTSC_M_KR) == V4L2_STD_NTSC_M_KR) {
923 curr_id = V4L2_STD_NTSC_M_KR;
924 } else if ( (id & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
925 curr_id = V4L2_STD_SECAM;
926 } else if ( (id & V4L2_STD_SECAM_DK) == V4L2_STD_SECAM_DK) {
927 curr_id = V4L2_STD_SECAM_DK;
928 } else if ( (id & V4L2_STD_SECAM_B) == V4L2_STD_SECAM_B) {
929 curr_id = V4L2_STD_SECAM_B;
930 } else if ( (id & V4L2_STD_SECAM_D) == V4L2_STD_SECAM_D) {
931 curr_id = V4L2_STD_SECAM_D;
932 } else if ( (id & V4L2_STD_SECAM_G) == V4L2_STD_SECAM_G) {
933 curr_id = V4L2_STD_SECAM_G;
934 } else if ( (id & V4L2_STD_SECAM_H) == V4L2_STD_SECAM_H) {
935 curr_id = V4L2_STD_SECAM_H;
936 } else if ( (id & V4L2_STD_SECAM_K) == V4L2_STD_SECAM_K) {
937 curr_id = V4L2_STD_SECAM_K;
938 } else if ( (id & V4L2_STD_SECAM_K1) == V4L2_STD_SECAM_K1) {
939 curr_id = V4L2_STD_SECAM_K1;
940 } else if ( (id & V4L2_STD_SECAM_L) == V4L2_STD_SECAM_L) {
941 curr_id = V4L2_STD_SECAM_L;
942 } else if ( (id & V4L2_STD_SECAM_LC) == V4L2_STD_SECAM_LC) {
943 curr_id = V4L2_STD_SECAM_LC;
944 } else {
945 break;
946 }
947 id &= ~curr_id;
401998fa 948 }
e75f9cee
MCC		 949 if (i<=index)
950 return -EINVAL;
951
952 v4l2_video_std_construct(p, curr_id,v4l2_norm_to_name(curr_id));
401998fa
MCC		 953 p->index = index;
954
955 dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
956 "framelines=%d\n", p->index,
957 (unsigned long long)p->id, p->name,
958 p->frameperiod.numerator,
959 p->frameperiod.denominator,
960 p->framelines);
961
962 ret=0;
963 break;
964 }
965 case VIDIOC_G_STD:
966 {
967 v4l2_std_id *id = arg;
968
969 *id = vfd->current_norm;
970
971 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
972
973 ret=0;
974 break;
975 }
976 case VIDIOC_S_STD:
977 {
e75f9cee 978 v4l2_std_id *id = arg,norm;
401998fa
MCC		 979
980 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
981
e75f9cee
MCC		 982 norm = (*id) & vfd->tvnorms;
983 if ( vfd->tvnorms && !norm) /* Check if std is supported */
401998fa 984 break;
401998fa
MCC		 985
986 /* Calls the specific handler */
987 if (vfd->vidioc_s_std)
e75f9cee 988 ret=vfd->vidioc_s_std(file, fh, &norm);
401998fa
MCC		 989 else
990 ret=-EINVAL;
991
992 /* Updates standard information */
e75f9cee
MCC		 993 if (ret>=0)
994 vfd->current_norm=norm;
401998fa
MCC		 995
996 break;
997 }
998 case VIDIOC_QUERYSTD:
999 {
1000 v4l2_std_id *p=arg;
1001
1002 if (!vfd->vidioc_querystd)
1003 break;
1004 ret=vfd->vidioc_querystd(file, fh, arg);
1005 if (!ret)
1006 dbgarg (cmd, "detected std=%Lu\n",
1007 (unsigned long long)*p);
1008 break;
1009 }
1010 /* ------ input switching ---------- */
1011 /* FIXME: Inputs can be handled inside videodev2 */
1012 case VIDIOC_ENUMINPUT:
1013 {
1014 struct v4l2_input *p=arg;
1015 int i=p->index;
1016
1017 if (!vfd->vidioc_enum_input)
1018 break;
1019 memset(p, 0, sizeof(*p));
1020 p->index=i;
1021
1022 ret=vfd->vidioc_enum_input(file, fh, p);
1023 if (!ret)
1024 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1025 "audioset=%d, "
1026 "tuner=%d, std=%Ld, status=%d\n",
1027 p->index,p->name,p->type,p->audioset,
1028 p->tuner,
1029 (unsigned long long)p->std,
1030 p->status);
1031 break;
1032 }
1033 case VIDIOC_G_INPUT:
1034 {
1035 unsigned int *i = arg;
1036
1037 if (!vfd->vidioc_g_input)
1038 break;
1039 ret=vfd->vidioc_g_input(file, fh, i);
1040 if (!ret)
1041 dbgarg (cmd, "value=%d\n",*i);
1042 break;
1043 }
1044 case VIDIOC_S_INPUT:
1045 {
1046 unsigned int *i = arg;
1047
1048 if (!vfd->vidioc_s_input)
1049 break;
1050 dbgarg (cmd, "value=%d\n",*i);
1051 ret=vfd->vidioc_s_input(file, fh, *i);
1052 break;
1053 }
1054
1055 /* ------ output switching ---------- */
1056 case VIDIOC_G_OUTPUT:
1057 {
1058 unsigned int *i = arg;
1059
1060 if (!vfd->vidioc_g_output)
1061 break;
1062 ret=vfd->vidioc_g_output(file, fh, i);
1063 if (!ret)
1064 dbgarg (cmd, "value=%d\n",*i);
1065 break;
1066 }
1067 case VIDIOC_S_OUTPUT:
1068 {
1069 unsigned int *i = arg;
1070
1071 if (!vfd->vidioc_s_output)
1072 break;
1073 dbgarg (cmd, "value=%d\n",*i);
1074 ret=vfd->vidioc_s_output(file, fh, *i);
1075 break;
1076 }
1077
1078 /* --- controls ---------------------------------------------- */
1079 case VIDIOC_QUERYCTRL:
1080 {
1081 struct v4l2_queryctrl *p=arg;
1082
1083 if (!vfd->vidioc_queryctrl)
1084 break;
1085 ret=vfd->vidioc_queryctrl(file, fh, p);
1086
1087 if (!ret)
1088 dbgarg (cmd, "id=%d, type=%d, name=%s, "
1089 "min/max=%d/%d,"
1090 " step=%d, default=%d, flags=0x%08x\n",
1091 p->id,p->type,p->name,p->minimum,
1092 p->maximum,p->step,p->default_value,
1093 p->flags);
1094 break;
1095 }
1096 case VIDIOC_G_CTRL:
1097 {
1098 struct v4l2_control *p = arg;
1099
1100 if (!vfd->vidioc_g_ctrl)
1101 break;
1102 dbgarg(cmd, "Enum for index=%d\n", p->id);
1103
1104 ret=vfd->vidioc_g_ctrl(file, fh, p);
1105 if (!ret)
1106 dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
1107 break;
1108 }
1109 case VIDIOC_S_CTRL:
1110 {
1111 struct v4l2_control *p = arg;
1112
1113 if (!vfd->vidioc_s_ctrl)
1114 break;
1115 dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
1116
1117 ret=vfd->vidioc_s_ctrl(file, fh, p);
1118 break;
1119 }
05976914
HV		 1120 case VIDIOC_G_EXT_CTRLS:
1121 {
1122 struct v4l2_ext_controls *p = arg;
1123
1124 if (vfd->vidioc_g_ext_ctrls) {
1125 dbgarg(cmd, "count=%d\n", p->count);
1126
1127 ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
1128 }
1129 break;
1130 }
1131 case VIDIOC_S_EXT_CTRLS:
1132 {
1133 struct v4l2_ext_controls *p = arg;
1134
1135 if (vfd->vidioc_s_ext_ctrls) {
1136 dbgarg(cmd, "count=%d\n", p->count);
1137
1138 ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
1139 }
1140 break;
1141 }
1142 case VIDIOC_TRY_EXT_CTRLS:
1143 {
1144 struct v4l2_ext_controls *p = arg;
1145
1146 if (vfd->vidioc_try_ext_ctrls) {
1147 dbgarg(cmd, "count=%d\n", p->count);
1148
1149 ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
1150 }
1151 break;
1152 }
401998fa
MCC		 1153 case VIDIOC_QUERYMENU:
1154 {
1155 struct v4l2_querymenu *p=arg;
1156 if (!vfd->vidioc_querymenu)
1157 break;
1158 ret=vfd->vidioc_querymenu(file, fh, p);
1159 if (!ret)
1160 dbgarg (cmd, "id=%d, index=%d, name=%s\n",
1161 p->id,p->index,p->name);
1162 break;
1163 }
1164 /* --- audio ---------------------------------------------- */
1165 case VIDIOC_ENUMAUDIO:
1166 {
1167 struct v4l2_audio *p=arg;
1168
1169 if (!vfd->vidioc_enumaudio)
1170 break;
1171 dbgarg(cmd, "Enum for index=%d\n", p->index);
1172 ret=vfd->vidioc_enumaudio(file, fh, p);
1173 if (!ret)
1174 dbgarg2("index=%d, name=%s, capability=%d, "
1175 "mode=%d\n",p->index,p->name,
1176 p->capability, p->mode);
1177 break;
1178 }
1179 case VIDIOC_G_AUDIO:
1180 {
1181 struct v4l2_audio *p=arg;
7964b1b1 1182 __u32 index=p->index;
401998fa
MCC		 1183
1184 if (!vfd->vidioc_g_audio)
1185 break;
7964b1b1
MCC		 1186
1187 memset(p,0,sizeof(*p));
1188 p->index=index;
401998fa
MCC		 1189 dbgarg(cmd, "Get for index=%d\n", p->index);
1190 ret=vfd->vidioc_g_audio(file, fh, p);
1191 if (!ret)
1192 dbgarg2("index=%d, name=%s, capability=%d, "
1193 "mode=%d\n",p->index,
1194 p->name,p->capability, p->mode);
1195 break;
1196 }
1197 case VIDIOC_S_AUDIO:
1198 {
1199 struct v4l2_audio *p=arg;
1200
1201 if (!vfd->vidioc_s_audio)
1202 break;
1203 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1204 "mode=%d\n", p->index, p->name,
1205 p->capability, p->mode);
1206 ret=vfd->vidioc_s_audio(file, fh, p);
1207 break;
1208 }
1209 case VIDIOC_ENUMAUDOUT:
1210 {
1211 struct v4l2_audioout *p=arg;
1212
1213 if (!vfd->vidioc_enumaudout)
1214 break;
1215 dbgarg(cmd, "Enum for index=%d\n", p->index);
1216 ret=vfd->vidioc_enumaudout(file, fh, p);
1217 if (!ret)
1218 dbgarg2("index=%d, name=%s, capability=%d, "
1219 "mode=%d\n", p->index, p->name,
1220 p->capability,p->mode);
1221 break;
1222 }
1223 case VIDIOC_G_AUDOUT:
1224 {
1225 struct v4l2_audioout *p=arg;
1226
1227 if (!vfd->vidioc_g_audout)
1228 break;
1229 dbgarg(cmd, "Enum for index=%d\n", p->index);
1230 ret=vfd->vidioc_g_audout(file, fh, p);
1231 if (!ret)
1232 dbgarg2("index=%d, name=%s, capability=%d, "
1233 "mode=%d\n", p->index, p->name,
1234 p->capability,p->mode);
1235 break;
1236 }
1237 case VIDIOC_S_AUDOUT:
1238 {
1239 struct v4l2_audioout *p=arg;
1240
1241 if (!vfd->vidioc_s_audout)
1242 break;
1243 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1244 "mode=%d\n", p->index, p->name,
1245 p->capability,p->mode);
1246
1247 ret=vfd->vidioc_s_audout(file, fh, p);
1248 break;
1249 }
1250 case VIDIOC_G_MODULATOR:
1251 {
1252 struct v4l2_modulator *p=arg;
1253 if (!vfd->vidioc_g_modulator)
1254 break;
1255 ret=vfd->vidioc_g_modulator(file, fh, p);
1256 if (!ret)
1257 dbgarg(cmd, "index=%d, name=%s, "
1258 "capability=%d, rangelow=%d,"
1259 " rangehigh=%d, txsubchans=%d\n",
1260 p->index, p->name,p->capability,
1261 p->rangelow, p->rangehigh,
1262 p->txsubchans);
1263 break;
1264 }
1265 case VIDIOC_S_MODULATOR:
1266 {
1267 struct v4l2_modulator *p=arg;
1268 if (!vfd->vidioc_s_modulator)
1269 break;
1270 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1271 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1272 p->index, p->name,p->capability,p->rangelow,
1273 p->rangehigh,p->txsubchans);
1274 ret=vfd->vidioc_s_modulator(file, fh, p);
1275 break;
1276 }
1277 case VIDIOC_G_CROP:
1278 {
1279 struct v4l2_crop *p=arg;
1280 if (!vfd->vidioc_g_crop)
1281 break;
1282 ret=vfd->vidioc_g_crop(file, fh, p);
1283 if (!ret) {
1284 dbgarg(cmd, "type=%d\n", p->type);
1285 dbgrect(vfd, "", &p->c);
1286 }
1287 break;
1288 }
1289 case VIDIOC_S_CROP:
1290 {
1291 struct v4l2_crop *p=arg;
1292 if (!vfd->vidioc_s_crop)
1293 break;
1294 dbgarg(cmd, "type=%d\n", p->type);
1295 dbgrect(vfd, "", &p->c);
1296 ret=vfd->vidioc_s_crop(file, fh, p);
1297 break;
1298 }
1299 case VIDIOC_CROPCAP:
1300 {
1301 struct v4l2_cropcap *p=arg;
1302 /*FIXME: Should also show v4l2_fract pixelaspect */
1303 if (!vfd->vidioc_cropcap)
1304 break;
1305 dbgarg(cmd, "type=%d\n", p->type);
1306 dbgrect(vfd, "bounds ", &p->bounds);
1307 dbgrect(vfd, "defrect ", &p->defrect);
1308 ret=vfd->vidioc_cropcap(file, fh, p);
1309 break;
1310 }
1311 case VIDIOC_G_MPEGCOMP:
1312 {
1313 struct v4l2_mpeg_compression *p=arg;
f81cf753 1314
401998fa
MCC		 1315 /*FIXME: Several fields not shown */
1316 if (!vfd->vidioc_g_mpegcomp)
1317 break;
1318 ret=vfd->vidioc_g_mpegcomp(file, fh, p);
1319 if (!ret)
1320 dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
1321 " ts_pid_video=%d, ts_pid_pcr=%d, "
1322 "ps_size=%d, au_sample_rate=%d, "
1323 "au_pesid=%c, vi_frame_rate=%d, "
1324 "vi_frames_per_gop=%d, "
1325 "vi_bframes_count=%d, vi_pesid=%c\n",
1326 p->ts_pid_pmt,p->ts_pid_audio,
1327 p->ts_pid_video,p->ts_pid_pcr,
1328 p->ps_size, p->au_sample_rate,
1329 p->au_pesid, p->vi_frame_rate,
1330 p->vi_frames_per_gop,
1331 p->vi_bframes_count, p->vi_pesid);
1332 break;
1333 }
1334 case VIDIOC_S_MPEGCOMP:
1335 {
1336 struct v4l2_mpeg_compression *p=arg;
1337 /*FIXME: Several fields not shown */
1338 if (!vfd->vidioc_s_mpegcomp)
1339 break;
1340 dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
1341 "ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
1342 "au_sample_rate=%d, au_pesid=%c, "
1343 "vi_frame_rate=%d, vi_frames_per_gop=%d, "
1344 "vi_bframes_count=%d, vi_pesid=%c\n",
1345 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
1346 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
1347 p->au_pesid, p->vi_frame_rate,
1348 p->vi_frames_per_gop, p->vi_bframes_count,
1349 p->vi_pesid);
1350 ret=vfd->vidioc_s_mpegcomp(file, fh, p);
1351 break;
1352 }
1353 case VIDIOC_G_JPEGCOMP:
1354 {
1355 struct v4l2_jpegcompression *p=arg;
1356 if (!vfd->vidioc_g_jpegcomp)
1357 break;
1358 ret=vfd->vidioc_g_jpegcomp(file, fh, p);
1359 if (!ret)
1360 dbgarg (cmd, "quality=%d, APPn=%d, "
1361 "APP_len=%d, COM_len=%d, "
1362 "jpeg_markers=%d\n",
1363 p->quality,p->APPn,p->APP_len,
1364 p->COM_len,p->jpeg_markers);
1365 break;
1366 }
1367 case VIDIOC_S_JPEGCOMP:
1368 {
1369 struct v4l2_jpegcompression *p=arg;
1370 if (!vfd->vidioc_g_jpegcomp)
1371 break;
1372 dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
1373 "COM_len=%d, jpeg_markers=%d\n",
1374 p->quality,p->APPn,p->APP_len,
1375 p->COM_len,p->jpeg_markers);
1376 ret=vfd->vidioc_s_jpegcomp(file, fh, p);
1377 break;
1378 }
db6eb5b3
HV		 1379 case VIDIOC_G_ENC_INDEX:
1380 {
1381 struct v4l2_enc_idx *p=arg;
1382
1383 if (!vfd->vidioc_g_enc_index)
1384 break;
1385 ret=vfd->vidioc_g_enc_index(file, fh, p);
1386 if (!ret)
1387 dbgarg (cmd, "entries=%d, entries_cap=%d\n",
1388 p->entries,p->entries_cap);
1389 break;
1390 }
ada6ecd2
HV		 1391 case VIDIOC_ENCODER_CMD:
1392 {
1393 struct v4l2_encoder_cmd *p=arg;
1394
1395 if (!vfd->vidioc_encoder_cmd)
1396 break;
1397 ret=vfd->vidioc_encoder_cmd(file, fh, p);
1398 if (!ret)
1399 dbgarg (cmd, "cmd=%d, flags=%d\n",
1400 p->cmd,p->flags);
1401 break;
1402 }
1403 case VIDIOC_TRY_ENCODER_CMD:
1404 {
1405 struct v4l2_encoder_cmd *p=arg;
1406
1407 if (!vfd->vidioc_try_encoder_cmd)
1408 break;
1409 ret=vfd->vidioc_try_encoder_cmd(file, fh, p);
1410 if (!ret)
1411 dbgarg (cmd, "cmd=%d, flags=%d\n",
1412 p->cmd,p->flags);
1413 break;
1414 }
401998fa
MCC		 1415 case VIDIOC_G_PARM:
1416 {
1417 struct v4l2_streamparm *p=arg;
2aa2342f
MCC		 1418 __u32 type=p->type;
1419
1420 memset(p,0,sizeof(*p));
1421 p->type=type;
1422
1c2d034e
MCC		 1423 if (vfd->vidioc_g_parm) {
1424 ret=vfd->vidioc_g_parm(file, fh, p);
1425 } else {
1426 struct v4l2_standard s;
1c2d034e
MCC		 1427
1428 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1429 return -EINVAL;
1430
83427ac5 1431 v4l2_video_std_construct(&s, vfd->current_norm,
e75f9cee 1432 v4l2_norm_to_name(vfd->current_norm));
1c2d034e 1433
1c2d034e
MCC		 1434 p->parm.capture.timeperframe = s.frameperiod;
1435 ret=0;
1436 }
1437
401998fa
MCC		 1438 dbgarg (cmd, "type=%d\n", p->type);
1439 break;
1440 }
1441 case VIDIOC_S_PARM:
1442 {
1443 struct v4l2_streamparm *p=arg;
1444 if (!vfd->vidioc_s_parm)
1445 break;
1446 dbgarg (cmd, "type=%d\n", p->type);
1447 ret=vfd->vidioc_s_parm(file, fh, p);
1448 break;
1449 }
1450 case VIDIOC_G_TUNER:
1451 {
1452 struct v4l2_tuner *p=arg;
7964b1b1
MCC		 1453 __u32 index=p->index;
1454
401998fa
MCC		 1455 if (!vfd->vidioc_g_tuner)
1456 break;
7964b1b1
MCC		 1457
1458 memset(p,0,sizeof(*p));
1459 p->index=index;
1460
401998fa
MCC		 1461 ret=vfd->vidioc_g_tuner(file, fh, p);
1462 if (!ret)
1463 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1464 "capability=%d, rangelow=%d, "
1465 "rangehigh=%d, signal=%d, afc=%d, "
1466 "rxsubchans=%d, audmode=%d\n",
1467 p->index, p->name, p->type,
1468 p->capability, p->rangelow,
1469 p->rangehigh, p->rxsubchans,
1470 p->audmode, p->signal, p->afc);
1471 break;
1472 }
1473 case VIDIOC_S_TUNER:
1474 {
1475 struct v4l2_tuner *p=arg;
1476 if (!vfd->vidioc_s_tuner)
1477 break;
1478 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1479 "capability=%d, rangelow=%d, rangehigh=%d, "
1480 "signal=%d, afc=%d, rxsubchans=%d, "
1481 "audmode=%d\n",p->index, p->name, p->type,
1482 p->capability, p->rangelow,p->rangehigh,
1483 p->rxsubchans, p->audmode, p->signal,
1484 p->afc);
1485 ret=vfd->vidioc_s_tuner(file, fh, p);
1486 break;
1487 }
1488 case VIDIOC_G_FREQUENCY:
1489 {
1490 struct v4l2_frequency *p=arg;
1491 if (!vfd->vidioc_g_frequency)
1492 break;
7964b1b1
MCC		 1493
1494 memset(p,0,sizeof(*p));
1495
401998fa
MCC		 1496 ret=vfd->vidioc_g_frequency(file, fh, p);
1497 if (!ret)
1498 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1499 p->tuner,p->type,p->frequency);
1500 break;
1501 }
1502 case VIDIOC_S_FREQUENCY:
1503 {
1504 struct v4l2_frequency *p=arg;
1505 if (!vfd->vidioc_s_frequency)
1506 break;
1507 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1508 p->tuner,p->type,p->frequency);
1509 ret=vfd->vidioc_s_frequency(file, fh, p);
1510 break;
1511 }
1512 case VIDIOC_G_SLICED_VBI_CAP:
1513 {
1514 struct v4l2_sliced_vbi_cap *p=arg;
1515 if (!vfd->vidioc_g_sliced_vbi_cap)
1516 break;
1517 ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
1518 if (!ret)
1519 dbgarg (cmd, "service_set=%d\n", p->service_set);
1520 break;
1521 }
1522 case VIDIOC_LOG_STATUS:
1523 {
1524 if (!vfd->vidioc_log_status)
1525 break;
1526 ret=vfd->vidioc_log_status(file, fh);
1527 break;
1528 }
dbbff48f 1529#ifdef CONFIG_VIDEO_ADV_DEBUG
52ebc763 1530 case VIDIOC_DBG_G_REGISTER:
dbbff48f
TP		 1531 {
1532 struct v4l2_register *p=arg;
62d50add
TP		 1533 if (!capable(CAP_SYS_ADMIN))
1534 ret=-EPERM;
1535 else if (vfd->vidioc_g_register)
dbbff48f
TP		 1536 ret=vfd->vidioc_g_register(file, fh, p);
1537 break;
1538 }
52ebc763 1539 case VIDIOC_DBG_S_REGISTER:
dbbff48f
TP		 1540 {
1541 struct v4l2_register *p=arg;
52ebc763
TP		 1542 if (!capable(CAP_SYS_ADMIN))
1543 ret=-EPERM;
1544 else if (vfd->vidioc_s_register)
dbbff48f
TP		 1545 ret=vfd->vidioc_s_register(file, fh, p);
1546 break;
1547 }
1548#endif
3434eb7e
HV		 1549 case VIDIOC_G_CHIP_IDENT:
1550 {
1551 struct v4l2_chip_ident *p=arg;
1552 if (!vfd->vidioc_g_chip_ident)
1553 break;
1554 ret=vfd->vidioc_g_chip_ident(file, fh, p);
1555 if (!ret)
1556 dbgarg (cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
1557 break;
1558 }
207705cd 1559 } /* switch */
401998fa
MCC		 1560
1561 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1562 if (ret<0) {
1563 printk ("%s: err:\n", vfd->name);
1564 v4l_print_ioctl(vfd->name, cmd);
1565 }
1566 }
1567
1568 return ret;
1569}
1570
1571int video_ioctl2 (struct inode *inode, struct file *file,
1572 unsigned int cmd, unsigned long arg)
1573{
1574 char sbuf[128];
1575 void *mbuf = NULL;
1576 void *parg = NULL;
1577 int err = -EINVAL;
05976914
HV		 1578 int is_ext_ctrl;
1579 size_t ctrls_size = 0;
1580 void __user *user_ptr = NULL;
401998fa
MCC		 1581
1582#ifdef __OLD_VIDIOC_
1583 cmd = video_fix_command(cmd);
1584#endif
05976914
HV		 1585 is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
1586 cmd == VIDIOC_TRY_EXT_CTRLS);
401998fa
MCC		 1587
1588 /* Copy arguments into temp kernel buffer */
1589 switch (_IOC_DIR(cmd)) {
1590 case _IOC_NONE:
1591 parg = NULL;
1592 break;
1593 case _IOC_READ:
1594 case _IOC_WRITE:
1595 case (_IOC_WRITE | _IOC_READ):
1596 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1597 parg = sbuf;
1598 } else {
1599 /* too big to allocate from stack */
1600 mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
1601 if (NULL == mbuf)
1602 return -ENOMEM;
1603 parg = mbuf;
1604 }
1605
1606 err = -EFAULT;
1607 if (_IOC_DIR(cmd) & _IOC_WRITE)
1608 if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1609 goto out;
1610 break;
1611 }
1612
05976914
HV		 1613 if (is_ext_ctrl) {
1614 struct v4l2_ext_controls *p = parg;
1615
1616 /* In case of an error, tell the caller that it wasn't
1617 a specific control that caused it. */
1618 p->error_idx = p->count;
1619 user_ptr = (void __user *)p->controls;
1620 if (p->count) {
1621 ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
1622 /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
1623 mbuf = kmalloc(ctrls_size, GFP_KERNEL);
1624 err = -ENOMEM;
1625 if (NULL == mbuf)
1626 goto out_ext_ctrl;
1627 err = -EFAULT;
1628 if (copy_from_user(mbuf, user_ptr, ctrls_size))
1629 goto out_ext_ctrl;
1630 p->controls = mbuf;
1631 }
1632 }
1633
401998fa
MCC		 1634 /* Handles IOCTL */
1635 err = __video_do_ioctl(inode, file, cmd, parg);
1636 if (err == -ENOIOCTLCMD)
1637 err = -EINVAL;
05976914
HV		 1638 if (is_ext_ctrl) {
1639 struct v4l2_ext_controls *p = parg;
1640
1641 p->controls = (void *)user_ptr;
1642 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
1643 err = -EFAULT;
1644 goto out_ext_ctrl;
1645 }
401998fa
MCC		 1646 if (err < 0)
1647 goto out;
1648
05976914 1649out_ext_ctrl:
401998fa
MCC		 1650 /* Copy results into user buffer */
1651 switch (_IOC_DIR(cmd))
1652 {
1653 case _IOC_READ:
1654 case (_IOC_WRITE | _IOC_READ):
1655 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1656 err = -EFAULT;
1657 break;
1658 }
1659
1660out:
1661 kfree(mbuf);
1662 return err;
1663}
1664
1665
fa027c2a 1666static const struct file_operations video_fops;
1da177e4
LT		 1667
1668/**
1669 * video_register_device - register video4linux devices
1670 * @vfd: video device structure we want to register
1671 * @type: type of device to register
1672 * @nr: which device number (0 == /dev/video0, 1 == /dev/video1, ...
1673 * -1 == first free)
938606b0 1674 *
1da177e4
LT		 1675 * The registration code assigns minor numbers based on the type
1676 * requested. -ENFILE is returned in all the device slots for this
1677 * category are full. If not then the minor field is set and the
1678 * driver initialize function is called (if non %NULL).
1679 *
1680 * Zero is returned on success.
1681 *
1682 * Valid types are
1683 *
1684 * %VFL_TYPE_GRABBER - A frame grabber
1685 *
1686 * %VFL_TYPE_VTX - A teletext device
1687 *
1688 * %VFL_TYPE_VBI - Vertical blank data (undecoded)
1689 *
938606b0 1690 * %VFL_TYPE_RADIO - A radio card
1da177e4
LT		 1691 */
1692
1693int video_register_device(struct video_device *vfd, int type, int nr)
1694{
1695 int i=0;
1696 int base;
1697 int end;
3117beec 1698 int ret;
1da177e4 1699 char *name_base;
938606b0 1700
1da177e4
LT		 1701 switch(type)
1702 {
1703 case VFL_TYPE_GRABBER:
4d0dddb1
MCC		 1704 base=MINOR_VFL_TYPE_GRABBER_MIN;
1705 end=MINOR_VFL_TYPE_GRABBER_MAX+1;
1da177e4
LT		 1706 name_base = "video";
1707 break;
1708 case VFL_TYPE_VTX:
4d0dddb1
MCC		 1709 base=MINOR_VFL_TYPE_VTX_MIN;
1710 end=MINOR_VFL_TYPE_VTX_MAX+1;
1da177e4
LT		 1711 name_base = "vtx";
1712 break;
1713 case VFL_TYPE_VBI:
4d0dddb1
MCC		 1714 base=MINOR_VFL_TYPE_VBI_MIN;
1715 end=MINOR_VFL_TYPE_VBI_MAX+1;
1da177e4
LT		 1716 name_base = "vbi";
1717 break;
1718 case VFL_TYPE_RADIO:
4d0dddb1
MCC		 1719 base=MINOR_VFL_TYPE_RADIO_MIN;
1720 end=MINOR_VFL_TYPE_RADIO_MAX+1;
1da177e4
LT		 1721 name_base = "radio";
1722 break;
1723 default:
53dd8def
TP		 1724 printk(KERN_ERR "%s called with unknown type: %d\n",
1725 __FUNCTION__, type);
1da177e4
LT		 1726 return -1;
1727 }
1728
1729 /* pick a minor number */
1e4baed3 1730 mutex_lock(&videodev_lock);
1da177e4
LT		 1731 if (nr >= 0 && nr < end-base) {
1732 /* use the one the driver asked for */
1733 i = base+nr;
1734 if (NULL != video_device[i]) {
1e4baed3 1735 mutex_unlock(&videodev_lock);
1da177e4
LT		 1736 return -ENFILE;
1737 }
1738 } else {
1739 /* use first free */
1740 for(i=base;i<end;i++)
1741 if (NULL == video_device[i])
1742 break;
1743 if (i == end) {
1e4baed3 1744 mutex_unlock(&videodev_lock);
1da177e4
LT		 1745 return -ENFILE;
1746 }
1747 }
1748 video_device[i]=vfd;
1749 vfd->minor=i;
1e4baed3 1750 mutex_unlock(&videodev_lock);
3593cab5 1751 mutex_init(&vfd->lock);
1da177e4
LT		 1752
1753 /* sysfs class */
938606b0 1754 memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
1da177e4
LT		 1755 if (vfd->dev)
1756 vfd->class_dev.dev = vfd->dev;
1757 vfd->class_dev.class = &video_class;
50c25fff 1758 vfd->class_dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor);
5e483075 1759 sprintf(vfd->class_dev.class_id, "%s%d", name_base, i - base);
3117beec 1760 ret = class_device_register(&vfd->class_dev);
8c313111 1761 if (ret < 0) {
3117beec
MK		 1762 printk(KERN_ERR "%s: class_device_register failed\n",
1763 __FUNCTION__);
d94fc9a0 1764 goto fail_minor;
3117beec 1765 }
985bc96e
MCC		 1766 ret = class_device_create_file(&vfd->class_dev, &class_device_attr_name);
1767 if (ret < 0) {
d94fc9a0
TP		 1768 printk(KERN_ERR "%s: class_device_create_file 'name' failed\n",
1769 __FUNCTION__);
1770 goto fail_classdev;
985bc96e 1771 }
1da177e4 1772
d21838dd
MCC		 1773#if 1
1774 /* needed until all drivers are fixed */
1da177e4
LT		 1775 if (!vfd->release)
1776 printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
1777 "Please fix your driver for proper sysfs support, see "
1778 "http://lwn.net/Articles/36850/\n", vfd->name);
1779#endif
1780 return 0;
53dd8def
TP		 1781
1782fail_classdev:
1783 class_device_unregister(&vfd->class_dev);
1784fail_minor:
1785 mutex_lock(&videodev_lock);
1786 video_device[vfd->minor] = NULL;
1787 vfd->minor = -1;
1788 mutex_unlock(&videodev_lock);
1789 return ret;
1da177e4
LT		 1790}
1791
1792/**
1793 * video_unregister_device - unregister a video4linux device
1794 * @vfd: the device to unregister
1795 *
1796 * This unregisters the passed device and deassigns the minor
1797 * number. Future open calls will be met with errors.
1798 */
938606b0 1799
1da177e4
LT		 1800void video_unregister_device(struct video_device *vfd)
1801{
1e4baed3 1802 mutex_lock(&videodev_lock);
1da177e4
LT		 1803 if(video_device[vfd->minor]!=vfd)
1804 panic("videodev: bad unregister");
1805
1da177e4
LT		 1806 video_device[vfd->minor]=NULL;
1807 class_device_unregister(&vfd->class_dev);
1e4baed3 1808 mutex_unlock(&videodev_lock);
1da177e4
LT		 1809}
1810
401998fa
MCC		 1811/*
1812 * Video fs operations
1813 */
fa027c2a 1814static const struct file_operations video_fops=
1da177e4
LT		 1815{
1816 .owner = THIS_MODULE,
1817 .llseek = no_llseek,
1818 .open = video_open,
1819};
1820
1821/*
1822 * Initialise video for linux
1823 */
938606b0 1824
1da177e4
LT		 1825static int __init videodev_init(void)
1826{
1827 int ret;
1828
401998fa 1829 printk(KERN_INFO "Linux video capture interface: v2.00\n");
1da177e4
LT		 1830 if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
1831 printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
1832 return -EIO;
1833 }
1834
1835 ret = class_register(&video_class);
1836 if (ret < 0) {
1837 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1838 printk(KERN_WARNING "video_dev: class_register failed\n");
1839 return -EIO;
1840 }
1841
1842 return 0;
1843}
1844
1845static void __exit videodev_exit(void)
1846{
1847 class_unregister(&video_class);
1848 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1849}
1850
1851module_init(videodev_init)
1852module_exit(videodev_exit)
1853
1854EXPORT_SYMBOL(video_register_device);
1855EXPORT_SYMBOL(video_unregister_device);
1856EXPORT_SYMBOL(video_devdata);
1857EXPORT_SYMBOL(video_usercopy);
1858EXPORT_SYMBOL(video_exclusive_open);
1859EXPORT_SYMBOL(video_exclusive_release);
401998fa 1860EXPORT_SYMBOL(video_ioctl2);
1da177e4
LT		 1861EXPORT_SYMBOL(video_device_alloc);
1862EXPORT_SYMBOL(video_device_release);
1863
401998fa
MCC		 1864MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
1865MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
1da177e4
LT		 1866MODULE_LICENSE("GPL");
1867
1868
1869/*
1870 * Local variables:
1871 * c-basic-offset: 8
1872 * End:
1873 */
Ubuntu Artful kernel mirror