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V4L/DVB (12406): em28xx: fix: don't do image interlacing on webcams
[linux-2.6/linux-2.6-openrd.git] / drivers / media / video / em28xx / em28xx-video.c
blobab079d9256c463a0c9889841ed3e0946969f1929
1 /*
2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3 video capture devices
4
5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
7 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Sascha Sommer <saschasommer@freenet.de>
9
10 Some parts based on SN9C10x PC Camera Controllers GPL driver made
11 by Luca Risolia <luca.risolia@studio.unibo.it>
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/bitmap.h>
33 #include <linux/usb.h>
34 #include <linux/i2c.h>
35 #include <linux/version.h>
36 #include <linux/mm.h>
37 #include <linux/mutex.h>
38
39 #include "em28xx.h"
40 #include <media/v4l2-common.h>
41 #include <media/v4l2-ioctl.h>
42 #include <media/v4l2-chip-ident.h>
43 #include <media/msp3400.h>
44 #include <media/tuner.h>
45
46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
47 "Markus Rechberger <mrechberger@gmail.com>, " \
48 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
49 "Sascha Sommer <saschasommer@freenet.de>"
50
51 #define DRIVER_DESC "Empia em28xx based USB video device driver"
52 #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 2)
53
54 #define em28xx_videodbg(fmt, arg...) do {\
55 if (video_debug) \
56 printk(KERN_INFO "%s %s :"fmt, \
57 dev->name, __func__ , ##arg); } while (0)
58
59 static unsigned int isoc_debug;
60 module_param(isoc_debug, int, 0644);
61 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
62
63 #define em28xx_isocdbg(fmt, arg...) \
64 do {\
65 if (isoc_debug) { \
66 printk(KERN_INFO "%s %s :"fmt, \
67 dev->name, __func__ , ##arg); \
68 } \
69 } while (0)
70
71 MODULE_AUTHOR(DRIVER_AUTHOR);
72 MODULE_DESCRIPTION(DRIVER_DESC);
73 MODULE_LICENSE("GPL");
74
75 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
76 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
77 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
78
79 module_param_array(video_nr, int, NULL, 0444);
80 module_param_array(vbi_nr, int, NULL, 0444);
81 module_param_array(radio_nr, int, NULL, 0444);
82 MODULE_PARM_DESC(video_nr, "video device numbers");
83 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
84 MODULE_PARM_DESC(radio_nr, "radio device numbers");
85
86 static unsigned int video_debug;
87 module_param(video_debug, int, 0644);
88 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
89
90 /* supported video standards */
91 static struct em28xx_fmt format[] = {
92 {
93 .name = "16 bpp YUY2, 4:2:2, packed",
94 .fourcc = V4L2_PIX_FMT_YUYV,
95 .depth = 16,
96 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
97 }, {
98 .name = "16 bpp RGB 565, LE",
99 .fourcc = V4L2_PIX_FMT_RGB565,
100 .depth = 16,
101 .reg = EM28XX_OUTFMT_RGB_16_656,
102 }, {
103 .name = "8 bpp Bayer BGBG..GRGR",
104 .fourcc = V4L2_PIX_FMT_SBGGR8,
105 .depth = 8,
106 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
107 }, {
108 .name = "8 bpp Bayer GRGR..BGBG",
109 .fourcc = V4L2_PIX_FMT_SGRBG8,
110 .depth = 8,
111 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
112 }, {
113 .name = "8 bpp Bayer GBGB..RGRG",
114 .fourcc = V4L2_PIX_FMT_SGBRG8,
115 .depth = 8,
116 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
117 }, {
118 .name = "12 bpp YUV411",
119 .fourcc = V4L2_PIX_FMT_YUV411P,
120 .depth = 12,
121 .reg = EM28XX_OUTFMT_YUV411,
122 },
123 };
124
125 /* supported controls */
126 /* Common to all boards */
127 static struct v4l2_queryctrl em28xx_qctrl[] = {
128 {
129 .id = V4L2_CID_AUDIO_VOLUME,
130 .type = V4L2_CTRL_TYPE_INTEGER,
131 .name = "Volume",
132 .minimum = 0x0,
133 .maximum = 0x1f,
134 .step = 0x1,
135 .default_value = 0x1f,
136 .flags = 0,
137 }, {
138 .id = V4L2_CID_AUDIO_MUTE,
139 .type = V4L2_CTRL_TYPE_BOOLEAN,
140 .name = "Mute",
141 .minimum = 0,
142 .maximum = 1,
143 .step = 1,
144 .default_value = 1,
145 .flags = 0,
146 }
147 };
148
149 /* ------------------------------------------------------------------
150 DMA and thread functions
151 ------------------------------------------------------------------*/
152
153 /*
154 * Announces that a buffer were filled and request the next
155 */
156 static inline void buffer_filled(struct em28xx *dev,
157 struct em28xx_dmaqueue *dma_q,
158 struct em28xx_buffer *buf)
159 {
160 /* Advice that buffer was filled */
161 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
162 buf->vb.state = VIDEOBUF_DONE;
163 buf->vb.field_count++;
164 do_gettimeofday(&buf->vb.ts);
165
166 dev->isoc_ctl.buf = NULL;
167
168 list_del(&buf->vb.queue);
169 wake_up(&buf->vb.done);
170 }
171
172 /*
173 * Identify the buffer header type and properly handles
174 */
175 static void em28xx_copy_video(struct em28xx *dev,
176 struct em28xx_dmaqueue *dma_q,
177 struct em28xx_buffer *buf,
178 unsigned char *p,
179 unsigned char *outp, unsigned long len)
180 {
181 void *fieldstart, *startwrite, *startread;
182 int linesdone, currlinedone, offset, lencopy, remain;
183 int bytesperline = dev->width << 1;
184
185 if (dma_q->pos + len > buf->vb.size)
186 len = buf->vb.size - dma_q->pos;
187
188 if (p[0] != 0x88 && p[0] != 0x22) {
189 em28xx_isocdbg("frame is not complete\n");
190 len += 4;
191 } else
192 p += 4;
193
194 startread = p;
195 remain = len;
196
197 if (dev->progressive)
198 fieldstart = outp;
199 else {
200 /* Interlaces two half frames */
201 if (buf->top_field)
202 fieldstart = outp;
203 else
204 fieldstart = outp + bytesperline;
205 }
206
207 linesdone = dma_q->pos / bytesperline;
208 currlinedone = dma_q->pos % bytesperline;
209
210 if (dev->progressive)
211 offset = linesdone * bytesperline + currlinedone;
212 else
213 offset = linesdone * bytesperline * 2 + currlinedone;
214
215 startwrite = fieldstart + offset;
216 lencopy = bytesperline - currlinedone;
217 lencopy = lencopy > remain ? remain : lencopy;
218
219 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
220 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
221 ((char *)startwrite + lencopy) -
222 ((char *)outp + buf->vb.size));
223 remain = (char *)outp + buf->vb.size - (char *)startwrite;
224 lencopy = remain;
225 }
226 if (lencopy <= 0)
227 return;
228 memcpy(startwrite, startread, lencopy);
229
230 remain -= lencopy;
231
232 while (remain > 0) {
233 startwrite += lencopy + bytesperline;
234 startread += lencopy;
235 if (bytesperline > remain)
236 lencopy = remain;
237 else
238 lencopy = bytesperline;
239
240 if ((char *)startwrite + lencopy > (char *)outp +
241 buf->vb.size) {
242 em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
243 ((char *)startwrite + lencopy) -
244 ((char *)outp + buf->vb.size));
245 lencopy = remain = (char *)outp + buf->vb.size -
246 (char *)startwrite;
247 }
248 if (lencopy <= 0)
249 break;
250
251 memcpy(startwrite, startread, lencopy);
252
253 remain -= lencopy;
254 }
255
256 dma_q->pos += len;
257 }
258
259 static inline void print_err_status(struct em28xx *dev,
260 int packet, int status)
261 {
262 char *errmsg = "Unknown";
263
264 switch (status) {
265 case -ENOENT:
266 errmsg = "unlinked synchronuously";
267 break;
268 case -ECONNRESET:
269 errmsg = "unlinked asynchronuously";
270 break;
271 case -ENOSR:
272 errmsg = "Buffer error (overrun)";
273 break;
274 case -EPIPE:
275 errmsg = "Stalled (device not responding)";
276 break;
277 case -EOVERFLOW:
278 errmsg = "Babble (bad cable?)";
279 break;
280 case -EPROTO:
281 errmsg = "Bit-stuff error (bad cable?)";
282 break;
283 case -EILSEQ:
284 errmsg = "CRC/Timeout (could be anything)";
285 break;
286 case -ETIME:
287 errmsg = "Device does not respond";
288 break;
289 }
290 if (packet < 0) {
291 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
292 } else {
293 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
294 packet, status, errmsg);
295 }
296 }
297
298 /*
299 * video-buf generic routine to get the next available buffer
300 */
301 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
302 struct em28xx_buffer **buf)
303 {
304 struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
305 char *outp;
306
307 if (list_empty(&dma_q->active)) {
308 em28xx_isocdbg("No active queue to serve\n");
309 dev->isoc_ctl.buf = NULL;
310 *buf = NULL;
311 return;
312 }
313
314 /* Get the next buffer */
315 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
316
317 /* Cleans up buffer - Usefull for testing for frame/URB loss */
318 outp = videobuf_to_vmalloc(&(*buf)->vb);
319 memset(outp, 0, (*buf)->vb.size);
320
321 dev->isoc_ctl.buf = *buf;
322
323 return;
324 }
325
326 /*
327 * Controls the isoc copy of each urb packet
328 */
329 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
330 {
331 struct em28xx_buffer *buf;
332 struct em28xx_dmaqueue *dma_q = urb->context;
333 unsigned char *outp = NULL;
334 int i, len = 0, rc = 1;
335 unsigned char *p;
336
337 if (!dev)
338 return 0;
339
340 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
341 return 0;
342
343 if (urb->status < 0) {
344 print_err_status(dev, -1, urb->status);
345 if (urb->status == -ENOENT)
346 return 0;
347 }
348
349 buf = dev->isoc_ctl.buf;
350 if (buf != NULL)
351 outp = videobuf_to_vmalloc(&buf->vb);
352
353 for (i = 0; i < urb->number_of_packets; i++) {
354 int status = urb->iso_frame_desc[i].status;
355
356 if (status < 0) {
357 print_err_status(dev, i, status);
358 if (urb->iso_frame_desc[i].status != -EPROTO)
359 continue;
360 }
361
362 len = urb->iso_frame_desc[i].actual_length - 4;
363
364 if (urb->iso_frame_desc[i].actual_length <= 0) {
365 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
366 continue;
367 }
368 if (urb->iso_frame_desc[i].actual_length >
369 dev->max_pkt_size) {
370 em28xx_isocdbg("packet bigger than packet size");
371 continue;
372 }
373
374 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
375
376 /* FIXME: incomplete buffer checks where removed to make
377 logic simpler. Impacts of those changes should be evaluated
378 */
379 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
380 em28xx_isocdbg("VBI HEADER!!!\n");
381 /* FIXME: Should add vbi copy */
382 continue;
383 }
384 if (p[0] == 0x22 && p[1] == 0x5a) {
385 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
386 len, (p[2] & 1) ? "odd" : "even");
387
388 if (dev->progressive || !(p[2] & 1)) {
389 if (buf != NULL)
390 buffer_filled(dev, dma_q, buf);
391 get_next_buf(dma_q, &buf);
392 if (buf == NULL)
393 outp = NULL;
394 else
395 outp = videobuf_to_vmalloc(&buf->vb);
396 }
397
398 if (buf != NULL) {
399 if (p[2] & 1)
400 buf->top_field = 0;
401 else
402 buf->top_field = 1;
403 }
404
405 dma_q->pos = 0;
406 }
407 if (buf != NULL)
408 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
409 }
410 return rc;
411 }
412
413 /* ------------------------------------------------------------------
414 Videobuf operations
415 ------------------------------------------------------------------*/
416
417 static int
418 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
419 {
420 struct em28xx_fh *fh = vq->priv_data;
421 struct em28xx *dev = fh->dev;
422 struct v4l2_frequency f;
423
424 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
425
426 if (0 == *count)
427 *count = EM28XX_DEF_BUF;
428
429 if (*count < EM28XX_MIN_BUF)
430 *count = EM28XX_MIN_BUF;
431
432 /* Ask tuner to go to analog or radio mode */
433 memset(&f, 0, sizeof(f));
434 f.frequency = dev->ctl_freq;
435 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
436
437 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
438
439 return 0;
440 }
441
442 /* This is called *without* dev->slock held; please keep it that way */
443 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
444 {
445 struct em28xx_fh *fh = vq->priv_data;
446 struct em28xx *dev = fh->dev;
447 unsigned long flags = 0;
448 if (in_interrupt())
449 BUG();
450
451 /* We used to wait for the buffer to finish here, but this didn't work
452 because, as we were keeping the state as VIDEOBUF_QUEUED,
453 videobuf_queue_cancel marked it as finished for us.
454 (Also, it could wedge forever if the hardware was misconfigured.)
455
456 This should be safe; by the time we get here, the buffer isn't
457 queued anymore. If we ever start marking the buffers as
458 VIDEOBUF_ACTIVE, it won't be, though.
459 */
460 spin_lock_irqsave(&dev->slock, flags);
461 if (dev->isoc_ctl.buf == buf)
462 dev->isoc_ctl.buf = NULL;
463 spin_unlock_irqrestore(&dev->slock, flags);
464
465 videobuf_vmalloc_free(&buf->vb);
466 buf->vb.state = VIDEOBUF_NEEDS_INIT;
467 }
468
469 static int
470 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
471 enum v4l2_field field)
472 {
473 struct em28xx_fh *fh = vq->priv_data;
474 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
475 struct em28xx *dev = fh->dev;
476 int rc = 0, urb_init = 0;
477
478 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
479
480 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
481 return -EINVAL;
482
483 buf->vb.width = dev->width;
484 buf->vb.height = dev->height;
485 buf->vb.field = field;
486
487 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
488 rc = videobuf_iolock(vq, &buf->vb, NULL);
489 if (rc < 0)
490 goto fail;
491 }
492
493 if (!dev->isoc_ctl.num_bufs)
494 urb_init = 1;
495
496 if (urb_init) {
497 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
498 EM28XX_NUM_BUFS, dev->max_pkt_size,
499 em28xx_isoc_copy);
500 if (rc < 0)
501 goto fail;
502 }
503
504 buf->vb.state = VIDEOBUF_PREPARED;
505 return 0;
506
507 fail:
508 free_buffer(vq, buf);
509 return rc;
510 }
511
512 static void
513 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
514 {
515 struct em28xx_buffer *buf = container_of(vb,
516 struct em28xx_buffer,
517 vb);
518 struct em28xx_fh *fh = vq->priv_data;
519 struct em28xx *dev = fh->dev;
520 struct em28xx_dmaqueue *vidq = &dev->vidq;
521
522 buf->vb.state = VIDEOBUF_QUEUED;
523 list_add_tail(&buf->vb.queue, &vidq->active);
524
525 }
526
527 static void buffer_release(struct videobuf_queue *vq,
528 struct videobuf_buffer *vb)
529 {
530 struct em28xx_buffer *buf = container_of(vb,
531 struct em28xx_buffer,
532 vb);
533 struct em28xx_fh *fh = vq->priv_data;
534 struct em28xx *dev = (struct em28xx *)fh->dev;
535
536 em28xx_isocdbg("em28xx: called buffer_release\n");
537
538 free_buffer(vq, buf);
539 }
540
541 static struct videobuf_queue_ops em28xx_video_qops = {
542 .buf_setup = buffer_setup,
543 .buf_prepare = buffer_prepare,
544 .buf_queue = buffer_queue,
545 .buf_release = buffer_release,
546 };
547
548 /********************* v4l2 interface **************************************/
549
550 static void video_mux(struct em28xx *dev, int index)
551 {
552 dev->ctl_input = index;
553 dev->ctl_ainput = INPUT(index)->amux;
554 dev->ctl_aoutput = INPUT(index)->aout;
555
556 if (!dev->ctl_aoutput)
557 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
558
559 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
560 INPUT(index)->vmux, 0, 0);
561
562 if (dev->board.has_msp34xx) {
563 if (dev->i2s_speed) {
564 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
565 s_i2s_clock_freq, dev->i2s_speed);
566 }
567 /* Note: this is msp3400 specific */
568 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
569 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
570 }
571
572 if (dev->board.adecoder != EM28XX_NOADECODER) {
573 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
574 dev->ctl_ainput, dev->ctl_aoutput, 0);
575 }
576
577 em28xx_audio_analog_set(dev);
578 }
579
580 /* Usage lock check functions */
581 static int res_get(struct em28xx_fh *fh)
582 {
583 struct em28xx *dev = fh->dev;
584 int rc = 0;
585
586 /* This instance already has stream_on */
587 if (fh->stream_on)
588 return rc;
589
590 if (dev->stream_on)
591 return -EBUSY;
592
593 dev->stream_on = 1;
594 fh->stream_on = 1;
595 return rc;
596 }
597
598 static int res_check(struct em28xx_fh *fh)
599 {
600 return fh->stream_on;
601 }
602
603 static void res_free(struct em28xx_fh *fh)
604 {
605 struct em28xx *dev = fh->dev;
606
607 fh->stream_on = 0;
608 dev->stream_on = 0;
609 }
610
611 /*
612 * em28xx_get_ctrl()
613 * return the current saturation, brightness or contrast, mute state
614 */
615 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
616 {
617 switch (ctrl->id) {
618 case V4L2_CID_AUDIO_MUTE:
619 ctrl->value = dev->mute;
620 return 0;
621 case V4L2_CID_AUDIO_VOLUME:
622 ctrl->value = dev->volume;
623 return 0;
624 default:
625 return -EINVAL;
626 }
627 }
628
629 /*
630 * em28xx_set_ctrl()
631 * mute or set new saturation, brightness or contrast
632 */
633 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
634 {
635 switch (ctrl->id) {
636 case V4L2_CID_AUDIO_MUTE:
637 if (ctrl->value != dev->mute) {
638 dev->mute = ctrl->value;
639 return em28xx_audio_analog_set(dev);
640 }
641 return 0;
642 case V4L2_CID_AUDIO_VOLUME:
643 dev->volume = ctrl->value;
644 return em28xx_audio_analog_set(dev);
645 default:
646 return -EINVAL;
647 }
648 }
649
650 static int check_dev(struct em28xx *dev)
651 {
652 if (dev->state & DEV_DISCONNECTED) {
653 em28xx_errdev("v4l2 ioctl: device not present\n");
654 return -ENODEV;
655 }
656
657 if (dev->state & DEV_MISCONFIGURED) {
658 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
659 "close and open it again\n");
660 return -EIO;
661 }
662 return 0;
663 }
664
665 static void get_scale(struct em28xx *dev,
666 unsigned int width, unsigned int height,
667 unsigned int *hscale, unsigned int *vscale)
668 {
669 unsigned int maxw = norm_maxw(dev);
670 unsigned int maxh = norm_maxh(dev);
671
672 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
673 if (*hscale >= 0x4000)
674 *hscale = 0x3fff;
675
676 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
677 if (*vscale >= 0x4000)
678 *vscale = 0x3fff;
679 }
680
681 /* ------------------------------------------------------------------
682 IOCTL vidioc handling
683 ------------------------------------------------------------------*/
684
685 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
686 struct v4l2_format *f)
687 {
688 struct em28xx_fh *fh = priv;
689 struct em28xx *dev = fh->dev;
690
691 mutex_lock(&dev->lock);
692
693 f->fmt.pix.width = dev->width;
694 f->fmt.pix.height = dev->height;
695 f->fmt.pix.pixelformat = dev->format->fourcc;
696 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
697 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
698 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
699
700 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
701 if (dev->progressive)
702 f->fmt.pix.field = V4L2_FIELD_NONE;
703 else
704 f->fmt.pix.field = dev->interlaced ?
705 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
706
707 mutex_unlock(&dev->lock);
708 return 0;
709 }
710
711 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
712 {
713 unsigned int i;
714
715 for (i = 0; i < ARRAY_SIZE(format); i++)
716 if (format[i].fourcc == fourcc)
717 return &format[i];
718
719 return NULL;
720 }
721
722 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
723 struct v4l2_format *f)
724 {
725 struct em28xx_fh *fh = priv;
726 struct em28xx *dev = fh->dev;
727 unsigned int width = f->fmt.pix.width;
728 unsigned int height = f->fmt.pix.height;
729 unsigned int maxw = norm_maxw(dev);
730 unsigned int maxh = norm_maxh(dev);
731 unsigned int hscale, vscale;
732 struct em28xx_fmt *fmt;
733
734 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
735 if (!fmt) {
736 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
737 f->fmt.pix.pixelformat);
738 return -EINVAL;
739 }
740
741 if (dev->board.is_em2800) {
742 /* the em2800 can only scale down to 50% */
743 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
744 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
745 /* According to empiatech support the MaxPacketSize is too small
746 * to support framesizes larger than 640x480 @ 30 fps or 640x576
747 * @ 25 fps. As this would cut of a part of the image we prefer
748 * 360x576 or 360x480 for now */
749 if (width == maxw && height == maxh)
750 width /= 2;
751 } else {
752 /* width must even because of the YUYV format
753 height must be even because of interlacing */
754 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
755 }
756
757 get_scale(dev, width, height, &hscale, &vscale);
758
759 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
760 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
761
762 f->fmt.pix.width = width;
763 f->fmt.pix.height = height;
764 f->fmt.pix.pixelformat = fmt->fourcc;
765 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
766 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
767 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
768 if (dev->progressive)
769 f->fmt.pix.field = V4L2_FIELD_NONE;
770 else
771 f->fmt.pix.field = dev->interlaced ?
772 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
773
774 return 0;
775 }
776
777 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
778 unsigned width, unsigned height)
779 {
780 struct em28xx_fmt *fmt;
781
782 fmt = format_by_fourcc(fourcc);
783 if (!fmt)
784 return -EINVAL;
785
786 dev->format = fmt;
787 dev->width = width;
788 dev->height = height;
789
790 /* set new image size */
791 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
792
793 em28xx_set_alternate(dev);
794 em28xx_resolution_set(dev);
795
796 return 0;
797 }
798
799 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
800 struct v4l2_format *f)
801 {
802 struct em28xx_fh *fh = priv;
803 struct em28xx *dev = fh->dev;
804 int rc;
805
806 rc = check_dev(dev);
807 if (rc < 0)
808 return rc;
809
810 mutex_lock(&dev->lock);
811
812 vidioc_try_fmt_vid_cap(file, priv, f);
813
814 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
815 em28xx_errdev("%s queue busy\n", __func__);
816 rc = -EBUSY;
817 goto out;
818 }
819
820 if (dev->stream_on && !fh->stream_on) {
821 em28xx_errdev("%s device in use by another fh\n", __func__);
822 rc = -EBUSY;
823 goto out;
824 }
825
826 rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
827 f->fmt.pix.width, f->fmt.pix.height);
828
829 out:
830 mutex_unlock(&dev->lock);
831 return rc;
832 }
833
834 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
835 {
836 struct em28xx_fh *fh = priv;
837 struct em28xx *dev = fh->dev;
838 struct v4l2_format f;
839 int rc;
840
841 rc = check_dev(dev);
842 if (rc < 0)
843 return rc;
844
845 mutex_lock(&dev->lock);
846 dev->norm = *norm;
847
848 /* Adjusts width/height, if needed */
849 f.fmt.pix.width = dev->width;
850 f.fmt.pix.height = dev->height;
851 vidioc_try_fmt_vid_cap(file, priv, &f);
852
853 /* set new image size */
854 dev->width = f.fmt.pix.width;
855 dev->height = f.fmt.pix.height;
856 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
857
858 em28xx_resolution_set(dev);
859 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
860
861 mutex_unlock(&dev->lock);
862 return 0;
863 }
864
865 static int vidioc_g_parm(struct file *file, void *priv,
866 struct v4l2_streamparm *p)
867 {
868 struct em28xx_fh *fh = priv;
869 struct em28xx *dev = fh->dev;
870 int rc = 0;
871
872 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
873 return -EINVAL;
874
875 if (dev->board.is_webcam)
876 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
877 video, g_parm, p);
878 else
879 v4l2_video_std_frame_period(dev->norm,
880 &p->parm.capture.timeperframe);
881
882 return rc;
883 }
884
885 static int vidioc_s_parm(struct file *file, void *priv,
886 struct v4l2_streamparm *p)
887 {
888 struct em28xx_fh *fh = priv;
889 struct em28xx *dev = fh->dev;
890
891 if (!dev->board.is_webcam)
892 return -EINVAL;
893
894 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
895 return -EINVAL;
896
897 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
898 }
899
900 static const char *iname[] = {
901 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
902 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
903 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
904 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
905 [EM28XX_VMUX_SVIDEO] = "S-Video",
906 [EM28XX_VMUX_TELEVISION] = "Television",
907 [EM28XX_VMUX_CABLE] = "Cable TV",
908 [EM28XX_VMUX_DVB] = "DVB",
909 [EM28XX_VMUX_DEBUG] = "for debug only",
910 };
911
912 static int vidioc_enum_input(struct file *file, void *priv,
913 struct v4l2_input *i)
914 {
915 struct em28xx_fh *fh = priv;
916 struct em28xx *dev = fh->dev;
917 unsigned int n;
918
919 n = i->index;
920 if (n >= MAX_EM28XX_INPUT)
921 return -EINVAL;
922 if (0 == INPUT(n)->type)
923 return -EINVAL;
924
925 i->index = n;
926 i->type = V4L2_INPUT_TYPE_CAMERA;
927
928 strcpy(i->name, iname[INPUT(n)->type]);
929
930 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
931 (EM28XX_VMUX_CABLE == INPUT(n)->type))
932 i->type = V4L2_INPUT_TYPE_TUNER;
933
934 i->std = dev->vdev->tvnorms;
935
936 return 0;
937 }
938
939 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
940 {
941 struct em28xx_fh *fh = priv;
942 struct em28xx *dev = fh->dev;
943
944 *i = dev->ctl_input;
945
946 return 0;
947 }
948
949 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
950 {
951 struct em28xx_fh *fh = priv;
952 struct em28xx *dev = fh->dev;
953 int rc;
954
955 rc = check_dev(dev);
956 if (rc < 0)
957 return rc;
958
959 if (i >= MAX_EM28XX_INPUT)
960 return -EINVAL;
961 if (0 == INPUT(i)->type)
962 return -EINVAL;
963
964 dev->ctl_input = i;
965
966 mutex_lock(&dev->lock);
967 video_mux(dev, dev->ctl_input);
968 mutex_unlock(&dev->lock);
969 return 0;
970 }
971
972 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
973 {
974 struct em28xx_fh *fh = priv;
975 struct em28xx *dev = fh->dev;
976
977 switch (a->index) {
978 case EM28XX_AMUX_VIDEO:
979 strcpy(a->name, "Television");
980 break;
981 case EM28XX_AMUX_LINE_IN:
982 strcpy(a->name, "Line In");
983 break;
984 case EM28XX_AMUX_VIDEO2:
985 strcpy(a->name, "Television alt");
986 break;
987 case EM28XX_AMUX_PHONE:
988 strcpy(a->name, "Phone");
989 break;
990 case EM28XX_AMUX_MIC:
991 strcpy(a->name, "Mic");
992 break;
993 case EM28XX_AMUX_CD:
994 strcpy(a->name, "CD");
995 break;
996 case EM28XX_AMUX_AUX:
997 strcpy(a->name, "Aux");
998 break;
999 case EM28XX_AMUX_PCM_OUT:
1000 strcpy(a->name, "PCM");
1001 break;
1002 default:
1003 return -EINVAL;
1004 }
1005
1006 a->index = dev->ctl_ainput;
1007 a->capability = V4L2_AUDCAP_STEREO;
1008
1009 return 0;
1010 }
1011
1012 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1013 {
1014 struct em28xx_fh *fh = priv;
1015 struct em28xx *dev = fh->dev;
1016
1017
1018 if (a->index >= MAX_EM28XX_INPUT)
1019 return -EINVAL;
1020 if (0 == INPUT(a->index)->type)
1021 return -EINVAL;
1022
1023 mutex_lock(&dev->lock);
1024
1025 dev->ctl_ainput = INPUT(a->index)->amux;
1026 dev->ctl_aoutput = INPUT(a->index)->aout;
1027
1028 if (!dev->ctl_aoutput)
1029 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1030
1031 mutex_unlock(&dev->lock);
1032 return 0;
1033 }
1034
1035 static int vidioc_queryctrl(struct file *file, void *priv,
1036 struct v4l2_queryctrl *qc)
1037 {
1038 struct em28xx_fh *fh = priv;
1039 struct em28xx *dev = fh->dev;
1040 int id = qc->id;
1041 int i;
1042 int rc;
1043
1044 rc = check_dev(dev);
1045 if (rc < 0)
1046 return rc;
1047
1048 memset(qc, 0, sizeof(*qc));
1049
1050 qc->id = id;
1051
1052 if (!dev->board.has_msp34xx) {
1053 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1054 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1055 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1056 return 0;
1057 }
1058 }
1059 }
1060
1061 mutex_lock(&dev->lock);
1062 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1063 mutex_unlock(&dev->lock);
1064
1065 if (qc->type)
1066 return 0;
1067 else
1068 return -EINVAL;
1069 }
1070
1071 static int vidioc_g_ctrl(struct file *file, void *priv,
1072 struct v4l2_control *ctrl)
1073 {
1074 struct em28xx_fh *fh = priv;
1075 struct em28xx *dev = fh->dev;
1076 int rc;
1077
1078 rc = check_dev(dev);
1079 if (rc < 0)
1080 return rc;
1081 rc = 0;
1082
1083 mutex_lock(&dev->lock);
1084
1085 if (dev->board.has_msp34xx)
1086 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1087 else {
1088 rc = em28xx_get_ctrl(dev, ctrl);
1089 if (rc < 0) {
1090 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1091 rc = 0;
1092 }
1093 }
1094
1095 mutex_unlock(&dev->lock);
1096 return rc;
1097 }
1098
1099 static int vidioc_s_ctrl(struct file *file, void *priv,
1100 struct v4l2_control *ctrl)
1101 {
1102 struct em28xx_fh *fh = priv;
1103 struct em28xx *dev = fh->dev;
1104 u8 i;
1105 int rc;
1106
1107 rc = check_dev(dev);
1108 if (rc < 0)
1109 return rc;
1110
1111 mutex_lock(&dev->lock);
1112
1113 if (dev->board.has_msp34xx)
1114 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1115 else {
1116 rc = 1;
1117 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1118 if (ctrl->id == em28xx_qctrl[i].id) {
1119 if (ctrl->value < em28xx_qctrl[i].minimum ||
1120 ctrl->value > em28xx_qctrl[i].maximum) {
1121 rc = -ERANGE;
1122 break;
1123 }
1124
1125 rc = em28xx_set_ctrl(dev, ctrl);
1126 break;
1127 }
1128 }
1129 }
1130
1131 /* Control not found - try to send it to the attached devices */
1132 if (rc == 1) {
1133 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1134 rc = 0;
1135 }
1136
1137 mutex_unlock(&dev->lock);
1138 return rc;
1139 }
1140
1141 static int vidioc_g_tuner(struct file *file, void *priv,
1142 struct v4l2_tuner *t)
1143 {
1144 struct em28xx_fh *fh = priv;
1145 struct em28xx *dev = fh->dev;
1146 int rc;
1147
1148 rc = check_dev(dev);
1149 if (rc < 0)
1150 return rc;
1151
1152 if (0 != t->index)
1153 return -EINVAL;
1154
1155 strcpy(t->name, "Tuner");
1156
1157 mutex_lock(&dev->lock);
1158 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1159 mutex_unlock(&dev->lock);
1160
1161 return 0;
1162 }
1163
1164 static int vidioc_s_tuner(struct file *file, void *priv,
1165 struct v4l2_tuner *t)
1166 {
1167 struct em28xx_fh *fh = priv;
1168 struct em28xx *dev = fh->dev;
1169 int rc;
1170
1171 rc = check_dev(dev);
1172 if (rc < 0)
1173 return rc;
1174
1175 if (0 != t->index)
1176 return -EINVAL;
1177
1178 mutex_lock(&dev->lock);
1179 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1180 mutex_unlock(&dev->lock);
1181
1182 return 0;
1183 }
1184
1185 static int vidioc_g_frequency(struct file *file, void *priv,
1186 struct v4l2_frequency *f)
1187 {
1188 struct em28xx_fh *fh = priv;
1189 struct em28xx *dev = fh->dev;
1190
1191 mutex_lock(&dev->lock);
1192 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1193 f->frequency = dev->ctl_freq;
1194 mutex_unlock(&dev->lock);
1195
1196 return 0;
1197 }
1198
1199 static int vidioc_s_frequency(struct file *file, void *priv,
1200 struct v4l2_frequency *f)
1201 {
1202 struct em28xx_fh *fh = priv;
1203 struct em28xx *dev = fh->dev;
1204 int rc;
1205
1206 rc = check_dev(dev);
1207 if (rc < 0)
1208 return rc;
1209
1210 if (0 != f->tuner)
1211 return -EINVAL;
1212
1213 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1214 return -EINVAL;
1215 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1216 return -EINVAL;
1217
1218 mutex_lock(&dev->lock);
1219
1220 dev->ctl_freq = f->frequency;
1221 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1222
1223 mutex_unlock(&dev->lock);
1224
1225 return 0;
1226 }
1227
1228 #ifdef CONFIG_VIDEO_ADV_DEBUG
1229 static int em28xx_reg_len(int reg)
1230 {
1231 switch (reg) {
1232 case EM28XX_R40_AC97LSB:
1233 case EM28XX_R30_HSCALELOW:
1234 case EM28XX_R32_VSCALELOW:
1235 return 2;
1236 default:
1237 return 1;
1238 }
1239 }
1240
1241 static int vidioc_g_chip_ident(struct file *file, void *priv,
1242 struct v4l2_dbg_chip_ident *chip)
1243 {
1244 struct em28xx_fh *fh = priv;
1245 struct em28xx *dev = fh->dev;
1246
1247 chip->ident = V4L2_IDENT_NONE;
1248 chip->revision = 0;
1249
1250 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1251
1252 return 0;
1253 }
1254
1255
1256 static int vidioc_g_register(struct file *file, void *priv,
1257 struct v4l2_dbg_register *reg)
1258 {
1259 struct em28xx_fh *fh = priv;
1260 struct em28xx *dev = fh->dev;
1261 int ret;
1262
1263 switch (reg->match.type) {
1264 case V4L2_CHIP_MATCH_AC97:
1265 mutex_lock(&dev->lock);
1266 ret = em28xx_read_ac97(dev, reg->reg);
1267 mutex_unlock(&dev->lock);
1268 if (ret < 0)
1269 return ret;
1270
1271 reg->val = ret;
1272 reg->size = 1;
1273 return 0;
1274 case V4L2_CHIP_MATCH_I2C_DRIVER:
1275 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1276 return 0;
1277 case V4L2_CHIP_MATCH_I2C_ADDR:
1278 /* Not supported yet */
1279 return -EINVAL;
1280 default:
1281 if (!v4l2_chip_match_host(&reg->match))
1282 return -EINVAL;
1283 }
1284
1285 /* Match host */
1286 reg->size = em28xx_reg_len(reg->reg);
1287 if (reg->size == 1) {
1288 mutex_lock(&dev->lock);
1289 ret = em28xx_read_reg(dev, reg->reg);
1290 mutex_unlock(&dev->lock);
1291
1292 if (ret < 0)
1293 return ret;
1294
1295 reg->val = ret;
1296 } else {
1297 __le16 val = 0;
1298 mutex_lock(&dev->lock);
1299 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1300 reg->reg, (char *)&val, 2);
1301 mutex_unlock(&dev->lock);
1302 if (ret < 0)
1303 return ret;
1304
1305 reg->val = le16_to_cpu(val);
1306 }
1307
1308 return 0;
1309 }
1310
1311 static int vidioc_s_register(struct file *file, void *priv,
1312 struct v4l2_dbg_register *reg)
1313 {
1314 struct em28xx_fh *fh = priv;
1315 struct em28xx *dev = fh->dev;
1316 __le16 buf;
1317 int rc;
1318
1319 switch (reg->match.type) {
1320 case V4L2_CHIP_MATCH_AC97:
1321 mutex_lock(&dev->lock);
1322 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1323 mutex_unlock(&dev->lock);
1324
1325 return rc;
1326 case V4L2_CHIP_MATCH_I2C_DRIVER:
1327 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1328 return 0;
1329 case V4L2_CHIP_MATCH_I2C_ADDR:
1330 /* Not supported yet */
1331 return -EINVAL;
1332 default:
1333 if (!v4l2_chip_match_host(&reg->match))
1334 return -EINVAL;
1335 }
1336
1337 /* Match host */
1338 buf = cpu_to_le16(reg->val);
1339
1340 mutex_lock(&dev->lock);
1341 rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1342 em28xx_reg_len(reg->reg));
1343 mutex_unlock(&dev->lock);
1344
1345 return rc;
1346 }
1347 #endif
1348
1349
1350 static int vidioc_cropcap(struct file *file, void *priv,
1351 struct v4l2_cropcap *cc)
1352 {
1353 struct em28xx_fh *fh = priv;
1354 struct em28xx *dev = fh->dev;
1355
1356 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1357 return -EINVAL;
1358
1359 cc->bounds.left = 0;
1360 cc->bounds.top = 0;
1361 cc->bounds.width = dev->width;
1362 cc->bounds.height = dev->height;
1363 cc->defrect = cc->bounds;
1364 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1365 cc->pixelaspect.denominator = 59;
1366
1367 return 0;
1368 }
1369
1370 static int vidioc_streamon(struct file *file, void *priv,
1371 enum v4l2_buf_type type)
1372 {
1373 struct em28xx_fh *fh = priv;
1374 struct em28xx *dev = fh->dev;
1375 int rc;
1376
1377 rc = check_dev(dev);
1378 if (rc < 0)
1379 return rc;
1380
1381
1382 mutex_lock(&dev->lock);
1383 rc = res_get(fh);
1384
1385 if (likely(rc >= 0))
1386 rc = videobuf_streamon(&fh->vb_vidq);
1387
1388 mutex_unlock(&dev->lock);
1389
1390 return rc;
1391 }
1392
1393 static int vidioc_streamoff(struct file *file, void *priv,
1394 enum v4l2_buf_type type)
1395 {
1396 struct em28xx_fh *fh = priv;
1397 struct em28xx *dev = fh->dev;
1398 int rc;
1399
1400 rc = check_dev(dev);
1401 if (rc < 0)
1402 return rc;
1403
1404 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1405 return -EINVAL;
1406 if (type != fh->type)
1407 return -EINVAL;
1408
1409 mutex_lock(&dev->lock);
1410
1411 videobuf_streamoff(&fh->vb_vidq);
1412 res_free(fh);
1413
1414 mutex_unlock(&dev->lock);
1415
1416 return 0;
1417 }
1418
1419 static int vidioc_querycap(struct file *file, void *priv,
1420 struct v4l2_capability *cap)
1421 {
1422 struct em28xx_fh *fh = priv;
1423 struct em28xx *dev = fh->dev;
1424
1425 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1426 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1427 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1428
1429 cap->version = EM28XX_VERSION_CODE;
1430
1431 cap->capabilities =
1432 V4L2_CAP_SLICED_VBI_CAPTURE |
1433 V4L2_CAP_VIDEO_CAPTURE |
1434 V4L2_CAP_AUDIO |
1435 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1436
1437 if (dev->tuner_type != TUNER_ABSENT)
1438 cap->capabilities |= V4L2_CAP_TUNER;
1439
1440 return 0;
1441 }
1442
1443 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1444 struct v4l2_fmtdesc *f)
1445 {
1446 if (unlikely(f->index >= ARRAY_SIZE(format)))
1447 return -EINVAL;
1448
1449 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1450 f->pixelformat = format[f->index].fourcc;
1451
1452 return 0;
1453 }
1454
1455 /* Sliced VBI ioctls */
1456 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1457 struct v4l2_format *f)
1458 {
1459 struct em28xx_fh *fh = priv;
1460 struct em28xx *dev = fh->dev;
1461 int rc;
1462
1463 rc = check_dev(dev);
1464 if (rc < 0)
1465 return rc;
1466
1467 mutex_lock(&dev->lock);
1468
1469 f->fmt.sliced.service_set = 0;
1470 v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1471
1472 if (f->fmt.sliced.service_set == 0)
1473 rc = -EINVAL;
1474
1475 mutex_unlock(&dev->lock);
1476
1477 return rc;
1478 }
1479
1480 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1481 struct v4l2_format *f)
1482 {
1483 struct em28xx_fh *fh = priv;
1484 struct em28xx *dev = fh->dev;
1485 int rc;
1486
1487 rc = check_dev(dev);
1488 if (rc < 0)
1489 return rc;
1490
1491 mutex_lock(&dev->lock);
1492 v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1493 mutex_unlock(&dev->lock);
1494
1495 if (f->fmt.sliced.service_set == 0)
1496 return -EINVAL;
1497
1498 return 0;
1499 }
1500
1501
1502 static int vidioc_reqbufs(struct file *file, void *priv,
1503 struct v4l2_requestbuffers *rb)
1504 {
1505 struct em28xx_fh *fh = priv;
1506 struct em28xx *dev = fh->dev;
1507 int rc;
1508
1509 rc = check_dev(dev);
1510 if (rc < 0)
1511 return rc;
1512
1513 return videobuf_reqbufs(&fh->vb_vidq, rb);
1514 }
1515
1516 static int vidioc_querybuf(struct file *file, void *priv,
1517 struct v4l2_buffer *b)
1518 {
1519 struct em28xx_fh *fh = priv;
1520 struct em28xx *dev = fh->dev;
1521 int rc;
1522
1523 rc = check_dev(dev);
1524 if (rc < 0)
1525 return rc;
1526
1527 return videobuf_querybuf(&fh->vb_vidq, b);
1528 }
1529
1530 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1531 {
1532 struct em28xx_fh *fh = priv;
1533 struct em28xx *dev = fh->dev;
1534 int rc;
1535
1536 rc = check_dev(dev);
1537 if (rc < 0)
1538 return rc;
1539
1540 return videobuf_qbuf(&fh->vb_vidq, b);
1541 }
1542
1543 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1544 {
1545 struct em28xx_fh *fh = priv;
1546 struct em28xx *dev = fh->dev;
1547 int rc;
1548
1549 rc = check_dev(dev);
1550 if (rc < 0)
1551 return rc;
1552
1553 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1554 }
1555
1556 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1557 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1558 {
1559 struct em28xx_fh *fh = priv;
1560
1561 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1562 }
1563 #endif
1564
1565
1566 /* ----------------------------------------------------------- */
1567 /* RADIO ESPECIFIC IOCTLS */
1568 /* ----------------------------------------------------------- */
1569
1570 static int radio_querycap(struct file *file, void *priv,
1571 struct v4l2_capability *cap)
1572 {
1573 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1574
1575 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1576 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1577 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1578
1579 cap->version = EM28XX_VERSION_CODE;
1580 cap->capabilities = V4L2_CAP_TUNER;
1581 return 0;
1582 }
1583
1584 static int radio_g_tuner(struct file *file, void *priv,
1585 struct v4l2_tuner *t)
1586 {
1587 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1588
1589 if (unlikely(t->index > 0))
1590 return -EINVAL;
1591
1592 strcpy(t->name, "Radio");
1593 t->type = V4L2_TUNER_RADIO;
1594
1595 mutex_lock(&dev->lock);
1596 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1597 mutex_unlock(&dev->lock);
1598
1599 return 0;
1600 }
1601
1602 static int radio_enum_input(struct file *file, void *priv,
1603 struct v4l2_input *i)
1604 {
1605 if (i->index != 0)
1606 return -EINVAL;
1607 strcpy(i->name, "Radio");
1608 i->type = V4L2_INPUT_TYPE_TUNER;
1609
1610 return 0;
1611 }
1612
1613 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1614 {
1615 if (unlikely(a->index))
1616 return -EINVAL;
1617
1618 strcpy(a->name, "Radio");
1619 return 0;
1620 }
1621
1622 static int radio_s_tuner(struct file *file, void *priv,
1623 struct v4l2_tuner *t)
1624 {
1625 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1626
1627 if (0 != t->index)
1628 return -EINVAL;
1629
1630 mutex_lock(&dev->lock);
1631 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1632 mutex_unlock(&dev->lock);
1633
1634 return 0;
1635 }
1636
1637 static int radio_s_audio(struct file *file, void *fh,
1638 struct v4l2_audio *a)
1639 {
1640 return 0;
1641 }
1642
1643 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1644 {
1645 return 0;
1646 }
1647
1648 static int radio_queryctrl(struct file *file, void *priv,
1649 struct v4l2_queryctrl *qc)
1650 {
1651 int i;
1652
1653 if (qc->id < V4L2_CID_BASE ||
1654 qc->id >= V4L2_CID_LASTP1)
1655 return -EINVAL;
1656
1657 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1658 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1659 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1660 return 0;
1661 }
1662 }
1663
1664 return -EINVAL;
1665 }
1666
1667 /*
1668 * em28xx_v4l2_open()
1669 * inits the device and starts isoc transfer
1670 */
1671 static int em28xx_v4l2_open(struct file *filp)
1672 {
1673 int minor = video_devdata(filp)->minor;
1674 int errCode = 0, radio;
1675 struct em28xx *dev;
1676 enum v4l2_buf_type fh_type;
1677 struct em28xx_fh *fh;
1678 enum v4l2_field field;
1679
1680 dev = em28xx_get_device(minor, &fh_type, &radio);
1681
1682 if (NULL == dev)
1683 return -ENODEV;
1684
1685 mutex_lock(&dev->lock);
1686
1687 em28xx_videodbg("open minor=%d type=%s users=%d\n",
1688 minor, v4l2_type_names[fh_type], dev->users);
1689
1690
1691 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1692 if (!fh) {
1693 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1694 mutex_unlock(&dev->lock);
1695 return -ENOMEM;
1696 }
1697 fh->dev = dev;
1698 fh->radio = radio;
1699 fh->type = fh_type;
1700 filp->private_data = fh;
1701
1702 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1703 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1704 em28xx_set_alternate(dev);
1705 em28xx_resolution_set(dev);
1706
1707 /* Needed, since GPIO might have disabled power of
1708 some i2c device
1709 */
1710 em28xx_wake_i2c(dev);
1711
1712 }
1713 if (fh->radio) {
1714 em28xx_videodbg("video_open: setting radio device\n");
1715 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1716 }
1717
1718 dev->users++;
1719
1720 if (dev->progressive)
1721 field = V4L2_FIELD_NONE;
1722 else
1723 field = V4L2_FIELD_INTERLACED;
1724
1725 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1726 NULL, &dev->slock, fh->type, field,
1727 sizeof(struct em28xx_buffer), fh);
1728
1729 mutex_unlock(&dev->lock);
1730
1731 return errCode;
1732 }
1733
1734 /*
1735 * em28xx_realease_resources()
1736 * unregisters the v4l2,i2c and usb devices
1737 * called when the device gets disconected or at module unload
1738 */
1739 void em28xx_release_analog_resources(struct em28xx *dev)
1740 {
1741
1742 /*FIXME: I2C IR should be disconnected */
1743
1744 if (dev->radio_dev) {
1745 if (-1 != dev->radio_dev->minor)
1746 video_unregister_device(dev->radio_dev);
1747 else
1748 video_device_release(dev->radio_dev);
1749 dev->radio_dev = NULL;
1750 }
1751 if (dev->vbi_dev) {
1752 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1753 dev->vbi_dev->num);
1754 if (-1 != dev->vbi_dev->minor)
1755 video_unregister_device(dev->vbi_dev);
1756 else
1757 video_device_release(dev->vbi_dev);
1758 dev->vbi_dev = NULL;
1759 }
1760 if (dev->vdev) {
1761 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1762 dev->vdev->num);
1763 if (-1 != dev->vdev->minor)
1764 video_unregister_device(dev->vdev);
1765 else
1766 video_device_release(dev->vdev);
1767 dev->vdev = NULL;
1768 }
1769 }
1770
1771 /*
1772 * em28xx_v4l2_close()
1773 * stops streaming and deallocates all resources allocated by the v4l2
1774 * calls and ioctls
1775 */
1776 static int em28xx_v4l2_close(struct file *filp)
1777 {
1778 struct em28xx_fh *fh = filp->private_data;
1779 struct em28xx *dev = fh->dev;
1780 int errCode;
1781
1782 em28xx_videodbg("users=%d\n", dev->users);
1783
1784
1785 mutex_lock(&dev->lock);
1786 if (res_check(fh))
1787 res_free(fh);
1788
1789 if (dev->users == 1) {
1790 videobuf_stop(&fh->vb_vidq);
1791 videobuf_mmap_free(&fh->vb_vidq);
1792
1793 /* the device is already disconnect,
1794 free the remaining resources */
1795 if (dev->state & DEV_DISCONNECTED) {
1796 em28xx_release_resources(dev);
1797 mutex_unlock(&dev->lock);
1798 kfree(dev);
1799 return 0;
1800 }
1801
1802 /* Save some power by putting tuner to sleep */
1803 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1804
1805 /* do this before setting alternate! */
1806 em28xx_uninit_isoc(dev);
1807 em28xx_set_mode(dev, EM28XX_SUSPEND);
1808
1809 /* set alternate 0 */
1810 dev->alt = 0;
1811 em28xx_videodbg("setting alternate 0\n");
1812 errCode = usb_set_interface(dev->udev, 0, 0);
1813 if (errCode < 0) {
1814 em28xx_errdev("cannot change alternate number to "
1815 "0 (error=%i)\n", errCode);
1816 }
1817 }
1818 kfree(fh);
1819 dev->users--;
1820 wake_up_interruptible_nr(&dev->open, 1);
1821 mutex_unlock(&dev->lock);
1822 return 0;
1823 }
1824
1825 /*
1826 * em28xx_v4l2_read()
1827 * will allocate buffers when called for the first time
1828 */
1829 static ssize_t
1830 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1831 loff_t *pos)
1832 {
1833 struct em28xx_fh *fh = filp->private_data;
1834 struct em28xx *dev = fh->dev;
1835 int rc;
1836
1837 rc = check_dev(dev);
1838 if (rc < 0)
1839 return rc;
1840
1841 /* FIXME: read() is not prepared to allow changing the video
1842 resolution while streaming. Seems a bug at em28xx_set_fmt
1843 */
1844
1845 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1846 mutex_lock(&dev->lock);
1847 rc = res_get(fh);
1848 mutex_unlock(&dev->lock);
1849
1850 if (unlikely(rc < 0))
1851 return rc;
1852
1853 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1854 filp->f_flags & O_NONBLOCK);
1855 }
1856 return 0;
1857 }
1858
1859 /*
1860 * em28xx_v4l2_poll()
1861 * will allocate buffers when called for the first time
1862 */
1863 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1864 {
1865 struct em28xx_fh *fh = filp->private_data;
1866 struct em28xx *dev = fh->dev;
1867 int rc;
1868
1869 rc = check_dev(dev);
1870 if (rc < 0)
1871 return rc;
1872
1873 mutex_lock(&dev->lock);
1874 rc = res_get(fh);
1875 mutex_unlock(&dev->lock);
1876
1877 if (unlikely(rc < 0))
1878 return POLLERR;
1879
1880 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1881 return POLLERR;
1882
1883 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1884 }
1885
1886 /*
1887 * em28xx_v4l2_mmap()
1888 */
1889 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1890 {
1891 struct em28xx_fh *fh = filp->private_data;
1892 struct em28xx *dev = fh->dev;
1893 int rc;
1894
1895 rc = check_dev(dev);
1896 if (rc < 0)
1897 return rc;
1898
1899 mutex_lock(&dev->lock);
1900 rc = res_get(fh);
1901 mutex_unlock(&dev->lock);
1902
1903 if (unlikely(rc < 0))
1904 return rc;
1905
1906 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1907
1908 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1909 (unsigned long)vma->vm_start,
1910 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1911 rc);
1912
1913 return rc;
1914 }
1915
1916 static const struct v4l2_file_operations em28xx_v4l_fops = {
1917 .owner = THIS_MODULE,
1918 .open = em28xx_v4l2_open,
1919 .release = em28xx_v4l2_close,
1920 .read = em28xx_v4l2_read,
1921 .poll = em28xx_v4l2_poll,
1922 .mmap = em28xx_v4l2_mmap,
1923 .ioctl = video_ioctl2,
1924 };
1925
1926 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1927 .vidioc_querycap = vidioc_querycap,
1928 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1929 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1930 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1931 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1932 .vidioc_g_audio = vidioc_g_audio,
1933 .vidioc_s_audio = vidioc_s_audio,
1934 .vidioc_cropcap = vidioc_cropcap,
1935
1936 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
1937 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1938 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1939
1940 .vidioc_reqbufs = vidioc_reqbufs,
1941 .vidioc_querybuf = vidioc_querybuf,
1942 .vidioc_qbuf = vidioc_qbuf,
1943 .vidioc_dqbuf = vidioc_dqbuf,
1944 .vidioc_s_std = vidioc_s_std,
1945 .vidioc_g_parm = vidioc_g_parm,
1946 .vidioc_s_parm = vidioc_s_parm,
1947 .vidioc_enum_input = vidioc_enum_input,
1948 .vidioc_g_input = vidioc_g_input,
1949 .vidioc_s_input = vidioc_s_input,
1950 .vidioc_queryctrl = vidioc_queryctrl,
1951 .vidioc_g_ctrl = vidioc_g_ctrl,
1952 .vidioc_s_ctrl = vidioc_s_ctrl,
1953 .vidioc_streamon = vidioc_streamon,
1954 .vidioc_streamoff = vidioc_streamoff,
1955 .vidioc_g_tuner = vidioc_g_tuner,
1956 .vidioc_s_tuner = vidioc_s_tuner,
1957 .vidioc_g_frequency = vidioc_g_frequency,
1958 .vidioc_s_frequency = vidioc_s_frequency,
1959 #ifdef CONFIG_VIDEO_ADV_DEBUG
1960 .vidioc_g_register = vidioc_g_register,
1961 .vidioc_s_register = vidioc_s_register,
1962 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1963 #endif
1964 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1965 .vidiocgmbuf = vidiocgmbuf,
1966 #endif
1967 };
1968
1969 static const struct video_device em28xx_video_template = {
1970 .fops = &em28xx_v4l_fops,
1971 .release = video_device_release,
1972 .ioctl_ops = &video_ioctl_ops,
1973
1974 .minor = -1,
1975
1976 .tvnorms = V4L2_STD_ALL,
1977 .current_norm = V4L2_STD_PAL,
1978 };
1979
1980 static const struct v4l2_file_operations radio_fops = {
1981 .owner = THIS_MODULE,
1982 .open = em28xx_v4l2_open,
1983 .release = em28xx_v4l2_close,
1984 .ioctl = video_ioctl2,
1985 };
1986
1987 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1988 .vidioc_querycap = radio_querycap,
1989 .vidioc_g_tuner = radio_g_tuner,
1990 .vidioc_enum_input = radio_enum_input,
1991 .vidioc_g_audio = radio_g_audio,
1992 .vidioc_s_tuner = radio_s_tuner,
1993 .vidioc_s_audio = radio_s_audio,
1994 .vidioc_s_input = radio_s_input,
1995 .vidioc_queryctrl = radio_queryctrl,
1996 .vidioc_g_ctrl = vidioc_g_ctrl,
1997 .vidioc_s_ctrl = vidioc_s_ctrl,
1998 .vidioc_g_frequency = vidioc_g_frequency,
1999 .vidioc_s_frequency = vidioc_s_frequency,
2000 #ifdef CONFIG_VIDEO_ADV_DEBUG
2001 .vidioc_g_register = vidioc_g_register,
2002 .vidioc_s_register = vidioc_s_register,
2003 #endif
2004 };
2005
2006 static struct video_device em28xx_radio_template = {
2007 .name = "em28xx-radio",
2008 .fops = &radio_fops,
2009 .ioctl_ops = &radio_ioctl_ops,
2010 .minor = -1,
2011 };
2012
2013 /******************************** usb interface ******************************/
2014
2015
2016
2017 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2018 const struct video_device *template,
2019 const char *type_name)
2020 {
2021 struct video_device *vfd;
2022
2023 vfd = video_device_alloc();
2024 if (NULL == vfd)
2025 return NULL;
2026
2027 *vfd = *template;
2028 vfd->minor = -1;
2029 vfd->v4l2_dev = &dev->v4l2_dev;
2030 vfd->release = video_device_release;
2031 vfd->debug = video_debug;
2032
2033 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2034 dev->name, type_name);
2035
2036 return vfd;
2037 }
2038
2039 int em28xx_register_analog_devices(struct em28xx *dev)
2040 {
2041 u8 val;
2042 int ret;
2043
2044 printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2045 dev->name,
2046 (EM28XX_VERSION_CODE >> 16) & 0xff,
2047 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2048
2049 /* set default norm */
2050 dev->norm = em28xx_video_template.current_norm;
2051 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2052 dev->ctl_input = 0;
2053
2054 /* Analog specific initialization */
2055 dev->format = &format[0];
2056 em28xx_set_video_format(dev, format[0].fourcc,
2057 norm_maxw(dev), norm_maxh(dev));
2058
2059 video_mux(dev, dev->ctl_input);
2060
2061 /* Audio defaults */
2062 dev->mute = 1;
2063 dev->volume = 0x1f;
2064
2065 /* enable vbi capturing */
2066
2067 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2068 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2069 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2070 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2071 em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2072
2073 em28xx_set_outfmt(dev);
2074 em28xx_colorlevels_set_default(dev);
2075 em28xx_compression_disable(dev);
2076
2077 /* allocate and fill video video_device struct */
2078 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2079 if (!dev->vdev) {
2080 em28xx_errdev("cannot allocate video_device.\n");
2081 return -ENODEV;
2082 }
2083
2084 /* register v4l2 video video_device */
2085 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2086 video_nr[dev->devno]);
2087 if (ret) {
2088 em28xx_errdev("unable to register video device (error=%i).\n",
2089 ret);
2090 return ret;
2091 }
2092
2093 /* Allocate and fill vbi video_device struct */
2094 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2095
2096 /* register v4l2 vbi video_device */
2097 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2098 vbi_nr[dev->devno]);
2099 if (ret < 0) {
2100 em28xx_errdev("unable to register vbi device\n");
2101 return ret;
2102 }
2103
2104 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2105 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2106 "radio");
2107 if (!dev->radio_dev) {
2108 em28xx_errdev("cannot allocate video_device.\n");
2109 return -ENODEV;
2110 }
2111 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2112 radio_nr[dev->devno]);
2113 if (ret < 0) {
2114 em28xx_errdev("can't register radio device\n");
2115 return ret;
2116 }
2117 em28xx_info("Registered radio device as /dev/radio%d\n",
2118 dev->radio_dev->num);
2119 }
2120
2121 em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2122 dev->vdev->num, dev->vbi_dev->num);
2123
2124 return 0;
2125 }
linux 2.6 git repository for openrd