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[linux/fpc-iii.git] / drivers / media / video / em28xx / em28xx-video.c
bloba6bdbc21410e7764cc67eee1cd0543079f8c5b36
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 ac97_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 = V4L2_CTRL_FLAG_SLIDER,
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 * ac97_queryctrl()
613 * return the ac97 supported controls
614 */
615 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
616 {
617 int i;
618
619 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
620 if (qc->id && qc->id == ac97_qctrl[i].id) {
621 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
622 return 0;
623 }
624 }
625
626 /* Control is not ac97 related */
627 return 1;
628 }
629
630 /*
631 * ac97_get_ctrl()
632 * return the current values for ac97 mute and volume
633 */
634 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
635 {
636 switch (ctrl->id) {
637 case V4L2_CID_AUDIO_MUTE:
638 ctrl->value = dev->mute;
639 return 0;
640 case V4L2_CID_AUDIO_VOLUME:
641 ctrl->value = dev->volume;
642 return 0;
643 default:
644 /* Control is not ac97 related */
645 return 1;
646 }
647 }
648
649 /*
650 * ac97_set_ctrl()
651 * set values for ac97 mute and volume
652 */
653 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
654 {
655 int i;
656
657 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
658 if (ctrl->id == ac97_qctrl[i].id)
659 goto handle;
660
661 /* Announce that hasn't handle it */
662 return 1;
663
664 handle:
665 if (ctrl->value < ac97_qctrl[i].minimum ||
666 ctrl->value > ac97_qctrl[i].maximum)
667 return -ERANGE;
668
669 switch (ctrl->id) {
670 case V4L2_CID_AUDIO_MUTE:
671 dev->mute = ctrl->value;
672 break;
673 case V4L2_CID_AUDIO_VOLUME:
674 dev->volume = ctrl->value;
675 break;
676 }
677
678 return em28xx_audio_analog_set(dev);
679 }
680
681 static int check_dev(struct em28xx *dev)
682 {
683 if (dev->state & DEV_DISCONNECTED) {
684 em28xx_errdev("v4l2 ioctl: device not present\n");
685 return -ENODEV;
686 }
687
688 if (dev->state & DEV_MISCONFIGURED) {
689 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
690 "close and open it again\n");
691 return -EIO;
692 }
693 return 0;
694 }
695
696 static void get_scale(struct em28xx *dev,
697 unsigned int width, unsigned int height,
698 unsigned int *hscale, unsigned int *vscale)
699 {
700 unsigned int maxw = norm_maxw(dev);
701 unsigned int maxh = norm_maxh(dev);
702
703 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
704 if (*hscale >= 0x4000)
705 *hscale = 0x3fff;
706
707 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
708 if (*vscale >= 0x4000)
709 *vscale = 0x3fff;
710 }
711
712 /* ------------------------------------------------------------------
713 IOCTL vidioc handling
714 ------------------------------------------------------------------*/
715
716 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
717 struct v4l2_format *f)
718 {
719 struct em28xx_fh *fh = priv;
720 struct em28xx *dev = fh->dev;
721
722 mutex_lock(&dev->lock);
723
724 f->fmt.pix.width = dev->width;
725 f->fmt.pix.height = dev->height;
726 f->fmt.pix.pixelformat = dev->format->fourcc;
727 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
728 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
729 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
730
731 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
732 if (dev->progressive)
733 f->fmt.pix.field = V4L2_FIELD_NONE;
734 else
735 f->fmt.pix.field = dev->interlaced ?
736 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
737
738 mutex_unlock(&dev->lock);
739 return 0;
740 }
741
742 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
743 {
744 unsigned int i;
745
746 for (i = 0; i < ARRAY_SIZE(format); i++)
747 if (format[i].fourcc == fourcc)
748 return &format[i];
749
750 return NULL;
751 }
752
753 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
754 struct v4l2_format *f)
755 {
756 struct em28xx_fh *fh = priv;
757 struct em28xx *dev = fh->dev;
758 unsigned int width = f->fmt.pix.width;
759 unsigned int height = f->fmt.pix.height;
760 unsigned int maxw = norm_maxw(dev);
761 unsigned int maxh = norm_maxh(dev);
762 unsigned int hscale, vscale;
763 struct em28xx_fmt *fmt;
764
765 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
766 if (!fmt) {
767 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
768 f->fmt.pix.pixelformat);
769 return -EINVAL;
770 }
771
772 if (dev->board.is_em2800) {
773 /* the em2800 can only scale down to 50% */
774 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
775 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
776 /* According to empiatech support the MaxPacketSize is too small
777 * to support framesizes larger than 640x480 @ 30 fps or 640x576
778 * @ 25 fps. As this would cut of a part of the image we prefer
779 * 360x576 or 360x480 for now */
780 if (width == maxw && height == maxh)
781 width /= 2;
782 } else {
783 /* width must even because of the YUYV format
784 height must be even because of interlacing */
785 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
786 }
787
788 get_scale(dev, width, height, &hscale, &vscale);
789
790 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
791 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
792
793 f->fmt.pix.width = width;
794 f->fmt.pix.height = height;
795 f->fmt.pix.pixelformat = fmt->fourcc;
796 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
797 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
798 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
799 if (dev->progressive)
800 f->fmt.pix.field = V4L2_FIELD_NONE;
801 else
802 f->fmt.pix.field = dev->interlaced ?
803 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
804
805 return 0;
806 }
807
808 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
809 unsigned width, unsigned height)
810 {
811 struct em28xx_fmt *fmt;
812
813 fmt = format_by_fourcc(fourcc);
814 if (!fmt)
815 return -EINVAL;
816
817 dev->format = fmt;
818 dev->width = width;
819 dev->height = height;
820
821 /* set new image size */
822 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
823
824 em28xx_set_alternate(dev);
825 em28xx_resolution_set(dev);
826
827 return 0;
828 }
829
830 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
831 struct v4l2_format *f)
832 {
833 struct em28xx_fh *fh = priv;
834 struct em28xx *dev = fh->dev;
835 int rc;
836
837 rc = check_dev(dev);
838 if (rc < 0)
839 return rc;
840
841 mutex_lock(&dev->lock);
842
843 vidioc_try_fmt_vid_cap(file, priv, f);
844
845 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
846 em28xx_errdev("%s queue busy\n", __func__);
847 rc = -EBUSY;
848 goto out;
849 }
850
851 if (dev->stream_on && !fh->stream_on) {
852 em28xx_errdev("%s device in use by another fh\n", __func__);
853 rc = -EBUSY;
854 goto out;
855 }
856
857 rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
858 f->fmt.pix.width, f->fmt.pix.height);
859
860 out:
861 mutex_unlock(&dev->lock);
862 return rc;
863 }
864
865 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
866 {
867 struct em28xx_fh *fh = priv;
868 struct em28xx *dev = fh->dev;
869 struct v4l2_format f;
870 int rc;
871
872 rc = check_dev(dev);
873 if (rc < 0)
874 return rc;
875
876 mutex_lock(&dev->lock);
877 dev->norm = *norm;
878
879 /* Adjusts width/height, if needed */
880 f.fmt.pix.width = dev->width;
881 f.fmt.pix.height = dev->height;
882 vidioc_try_fmt_vid_cap(file, priv, &f);
883
884 /* set new image size */
885 dev->width = f.fmt.pix.width;
886 dev->height = f.fmt.pix.height;
887 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
888
889 em28xx_resolution_set(dev);
890 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
891
892 mutex_unlock(&dev->lock);
893 return 0;
894 }
895
896 static int vidioc_g_parm(struct file *file, void *priv,
897 struct v4l2_streamparm *p)
898 {
899 struct em28xx_fh *fh = priv;
900 struct em28xx *dev = fh->dev;
901 int rc = 0;
902
903 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
904 return -EINVAL;
905
906 if (dev->board.is_webcam)
907 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
908 video, g_parm, p);
909 else
910 v4l2_video_std_frame_period(dev->norm,
911 &p->parm.capture.timeperframe);
912
913 return rc;
914 }
915
916 static int vidioc_s_parm(struct file *file, void *priv,
917 struct v4l2_streamparm *p)
918 {
919 struct em28xx_fh *fh = priv;
920 struct em28xx *dev = fh->dev;
921
922 if (!dev->board.is_webcam)
923 return -EINVAL;
924
925 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
926 return -EINVAL;
927
928 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
929 }
930
931 static const char *iname[] = {
932 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
933 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
934 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
935 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
936 [EM28XX_VMUX_SVIDEO] = "S-Video",
937 [EM28XX_VMUX_TELEVISION] = "Television",
938 [EM28XX_VMUX_CABLE] = "Cable TV",
939 [EM28XX_VMUX_DVB] = "DVB",
940 [EM28XX_VMUX_DEBUG] = "for debug only",
941 };
942
943 static int vidioc_enum_input(struct file *file, void *priv,
944 struct v4l2_input *i)
945 {
946 struct em28xx_fh *fh = priv;
947 struct em28xx *dev = fh->dev;
948 unsigned int n;
949
950 n = i->index;
951 if (n >= MAX_EM28XX_INPUT)
952 return -EINVAL;
953 if (0 == INPUT(n)->type)
954 return -EINVAL;
955
956 i->index = n;
957 i->type = V4L2_INPUT_TYPE_CAMERA;
958
959 strcpy(i->name, iname[INPUT(n)->type]);
960
961 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
962 (EM28XX_VMUX_CABLE == INPUT(n)->type))
963 i->type = V4L2_INPUT_TYPE_TUNER;
964
965 i->std = dev->vdev->tvnorms;
966
967 return 0;
968 }
969
970 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
971 {
972 struct em28xx_fh *fh = priv;
973 struct em28xx *dev = fh->dev;
974
975 *i = dev->ctl_input;
976
977 return 0;
978 }
979
980 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
981 {
982 struct em28xx_fh *fh = priv;
983 struct em28xx *dev = fh->dev;
984 int rc;
985
986 rc = check_dev(dev);
987 if (rc < 0)
988 return rc;
989
990 if (i >= MAX_EM28XX_INPUT)
991 return -EINVAL;
992 if (0 == INPUT(i)->type)
993 return -EINVAL;
994
995 dev->ctl_input = i;
996
997 mutex_lock(&dev->lock);
998 video_mux(dev, dev->ctl_input);
999 mutex_unlock(&dev->lock);
1000 return 0;
1001 }
1002
1003 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1004 {
1005 struct em28xx_fh *fh = priv;
1006 struct em28xx *dev = fh->dev;
1007
1008 if (!dev->audio_mode.has_audio)
1009 return -EINVAL;
1010
1011 switch (a->index) {
1012 case EM28XX_AMUX_VIDEO:
1013 strcpy(a->name, "Television");
1014 break;
1015 case EM28XX_AMUX_LINE_IN:
1016 strcpy(a->name, "Line In");
1017 break;
1018 case EM28XX_AMUX_VIDEO2:
1019 strcpy(a->name, "Television alt");
1020 break;
1021 case EM28XX_AMUX_PHONE:
1022 strcpy(a->name, "Phone");
1023 break;
1024 case EM28XX_AMUX_MIC:
1025 strcpy(a->name, "Mic");
1026 break;
1027 case EM28XX_AMUX_CD:
1028 strcpy(a->name, "CD");
1029 break;
1030 case EM28XX_AMUX_AUX:
1031 strcpy(a->name, "Aux");
1032 break;
1033 case EM28XX_AMUX_PCM_OUT:
1034 strcpy(a->name, "PCM");
1035 break;
1036 default:
1037 return -EINVAL;
1038 }
1039
1040 a->index = dev->ctl_ainput;
1041 a->capability = V4L2_AUDCAP_STEREO;
1042
1043 return 0;
1044 }
1045
1046 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1047 {
1048 struct em28xx_fh *fh = priv;
1049 struct em28xx *dev = fh->dev;
1050
1051
1052 if (!dev->audio_mode.has_audio)
1053 return -EINVAL;
1054
1055 if (a->index >= MAX_EM28XX_INPUT)
1056 return -EINVAL;
1057 if (0 == INPUT(a->index)->type)
1058 return -EINVAL;
1059
1060 mutex_lock(&dev->lock);
1061
1062 dev->ctl_ainput = INPUT(a->index)->amux;
1063 dev->ctl_aoutput = INPUT(a->index)->aout;
1064
1065 if (!dev->ctl_aoutput)
1066 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1067
1068 mutex_unlock(&dev->lock);
1069 return 0;
1070 }
1071
1072 static int vidioc_queryctrl(struct file *file, void *priv,
1073 struct v4l2_queryctrl *qc)
1074 {
1075 struct em28xx_fh *fh = priv;
1076 struct em28xx *dev = fh->dev;
1077 int id = qc->id;
1078 int rc;
1079
1080 rc = check_dev(dev);
1081 if (rc < 0)
1082 return rc;
1083
1084 memset(qc, 0, sizeof(*qc));
1085
1086 qc->id = id;
1087
1088 /* enumberate AC97 controls */
1089 if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1090 rc = ac97_queryctrl(qc);
1091 if (!rc)
1092 return 0;
1093 }
1094
1095 /* enumberate V4L2 device controls */
1096 mutex_lock(&dev->lock);
1097 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1098 mutex_unlock(&dev->lock);
1099
1100 if (qc->type)
1101 return 0;
1102 else
1103 return -EINVAL;
1104 }
1105
1106 static int vidioc_g_ctrl(struct file *file, void *priv,
1107 struct v4l2_control *ctrl)
1108 {
1109 struct em28xx_fh *fh = priv;
1110 struct em28xx *dev = fh->dev;
1111 int rc;
1112
1113 rc = check_dev(dev);
1114 if (rc < 0)
1115 return rc;
1116 rc = 0;
1117
1118 mutex_lock(&dev->lock);
1119
1120 /* Set an AC97 control */
1121 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1122 rc = ac97_get_ctrl(dev, ctrl);
1123 else
1124 rc = 1;
1125
1126 /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1127 if (rc == 1) {
1128 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1129 rc = 0;
1130 }
1131
1132 mutex_unlock(&dev->lock);
1133 return rc;
1134 }
1135
1136 static int vidioc_s_ctrl(struct file *file, void *priv,
1137 struct v4l2_control *ctrl)
1138 {
1139 struct em28xx_fh *fh = priv;
1140 struct em28xx *dev = fh->dev;
1141 int rc;
1142
1143 rc = check_dev(dev);
1144 if (rc < 0)
1145 return rc;
1146
1147 mutex_lock(&dev->lock);
1148
1149 /* Set an AC97 control */
1150 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1151 rc = ac97_set_ctrl(dev, ctrl);
1152 else
1153 rc = 1;
1154
1155 /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1156 if (rc == 1) {
1157 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1158
1159 /*
1160 * In the case of non-AC97 volume controls, we still need
1161 * to do some setups at em28xx, in order to mute/unmute
1162 * and to adjust audio volume. However, the value ranges
1163 * should be checked by the corresponding V4L subdriver.
1164 */
1165 switch (ctrl->id) {
1166 case V4L2_CID_AUDIO_MUTE:
1167 dev->mute = ctrl->value;
1168 rc = em28xx_audio_analog_set(dev);
1169 break;
1170 case V4L2_CID_AUDIO_VOLUME:
1171 dev->volume = ctrl->value;
1172 rc = em28xx_audio_analog_set(dev);
1173 }
1174 }
1175
1176 mutex_unlock(&dev->lock);
1177 return rc;
1178 }
1179
1180 static int vidioc_g_tuner(struct file *file, void *priv,
1181 struct v4l2_tuner *t)
1182 {
1183 struct em28xx_fh *fh = priv;
1184 struct em28xx *dev = fh->dev;
1185 int rc;
1186
1187 rc = check_dev(dev);
1188 if (rc < 0)
1189 return rc;
1190
1191 if (0 != t->index)
1192 return -EINVAL;
1193
1194 strcpy(t->name, "Tuner");
1195
1196 mutex_lock(&dev->lock);
1197 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1198 mutex_unlock(&dev->lock);
1199
1200 return 0;
1201 }
1202
1203 static int vidioc_s_tuner(struct file *file, void *priv,
1204 struct v4l2_tuner *t)
1205 {
1206 struct em28xx_fh *fh = priv;
1207 struct em28xx *dev = fh->dev;
1208 int rc;
1209
1210 rc = check_dev(dev);
1211 if (rc < 0)
1212 return rc;
1213
1214 if (0 != t->index)
1215 return -EINVAL;
1216
1217 mutex_lock(&dev->lock);
1218 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1219 mutex_unlock(&dev->lock);
1220
1221 return 0;
1222 }
1223
1224 static int vidioc_g_frequency(struct file *file, void *priv,
1225 struct v4l2_frequency *f)
1226 {
1227 struct em28xx_fh *fh = priv;
1228 struct em28xx *dev = fh->dev;
1229
1230 mutex_lock(&dev->lock);
1231 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1232 f->frequency = dev->ctl_freq;
1233 mutex_unlock(&dev->lock);
1234
1235 return 0;
1236 }
1237
1238 static int vidioc_s_frequency(struct file *file, void *priv,
1239 struct v4l2_frequency *f)
1240 {
1241 struct em28xx_fh *fh = priv;
1242 struct em28xx *dev = fh->dev;
1243 int rc;
1244
1245 rc = check_dev(dev);
1246 if (rc < 0)
1247 return rc;
1248
1249 if (0 != f->tuner)
1250 return -EINVAL;
1251
1252 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1253 return -EINVAL;
1254 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1255 return -EINVAL;
1256
1257 mutex_lock(&dev->lock);
1258
1259 dev->ctl_freq = f->frequency;
1260 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1261
1262 mutex_unlock(&dev->lock);
1263
1264 return 0;
1265 }
1266
1267 #ifdef CONFIG_VIDEO_ADV_DEBUG
1268 static int em28xx_reg_len(int reg)
1269 {
1270 switch (reg) {
1271 case EM28XX_R40_AC97LSB:
1272 case EM28XX_R30_HSCALELOW:
1273 case EM28XX_R32_VSCALELOW:
1274 return 2;
1275 default:
1276 return 1;
1277 }
1278 }
1279
1280 static int vidioc_g_chip_ident(struct file *file, void *priv,
1281 struct v4l2_dbg_chip_ident *chip)
1282 {
1283 struct em28xx_fh *fh = priv;
1284 struct em28xx *dev = fh->dev;
1285
1286 chip->ident = V4L2_IDENT_NONE;
1287 chip->revision = 0;
1288
1289 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1290
1291 return 0;
1292 }
1293
1294
1295 static int vidioc_g_register(struct file *file, void *priv,
1296 struct v4l2_dbg_register *reg)
1297 {
1298 struct em28xx_fh *fh = priv;
1299 struct em28xx *dev = fh->dev;
1300 int ret;
1301
1302 switch (reg->match.type) {
1303 case V4L2_CHIP_MATCH_AC97:
1304 mutex_lock(&dev->lock);
1305 ret = em28xx_read_ac97(dev, reg->reg);
1306 mutex_unlock(&dev->lock);
1307 if (ret < 0)
1308 return ret;
1309
1310 reg->val = ret;
1311 reg->size = 1;
1312 return 0;
1313 case V4L2_CHIP_MATCH_I2C_DRIVER:
1314 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1315 return 0;
1316 case V4L2_CHIP_MATCH_I2C_ADDR:
1317 /* TODO: is this correct? */
1318 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1319 return 0;
1320 default:
1321 if (!v4l2_chip_match_host(&reg->match))
1322 return -EINVAL;
1323 }
1324
1325 /* Match host */
1326 reg->size = em28xx_reg_len(reg->reg);
1327 if (reg->size == 1) {
1328 mutex_lock(&dev->lock);
1329 ret = em28xx_read_reg(dev, reg->reg);
1330 mutex_unlock(&dev->lock);
1331
1332 if (ret < 0)
1333 return ret;
1334
1335 reg->val = ret;
1336 } else {
1337 __le16 val = 0;
1338 mutex_lock(&dev->lock);
1339 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1340 reg->reg, (char *)&val, 2);
1341 mutex_unlock(&dev->lock);
1342 if (ret < 0)
1343 return ret;
1344
1345 reg->val = le16_to_cpu(val);
1346 }
1347
1348 return 0;
1349 }
1350
1351 static int vidioc_s_register(struct file *file, void *priv,
1352 struct v4l2_dbg_register *reg)
1353 {
1354 struct em28xx_fh *fh = priv;
1355 struct em28xx *dev = fh->dev;
1356 __le16 buf;
1357 int rc;
1358
1359 switch (reg->match.type) {
1360 case V4L2_CHIP_MATCH_AC97:
1361 mutex_lock(&dev->lock);
1362 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1363 mutex_unlock(&dev->lock);
1364
1365 return rc;
1366 case V4L2_CHIP_MATCH_I2C_DRIVER:
1367 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1368 return 0;
1369 case V4L2_CHIP_MATCH_I2C_ADDR:
1370 /* TODO: is this correct? */
1371 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1372 return 0;
1373 default:
1374 if (!v4l2_chip_match_host(&reg->match))
1375 return -EINVAL;
1376 }
1377
1378 /* Match host */
1379 buf = cpu_to_le16(reg->val);
1380
1381 mutex_lock(&dev->lock);
1382 rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1383 em28xx_reg_len(reg->reg));
1384 mutex_unlock(&dev->lock);
1385
1386 return rc;
1387 }
1388 #endif
1389
1390
1391 static int vidioc_cropcap(struct file *file, void *priv,
1392 struct v4l2_cropcap *cc)
1393 {
1394 struct em28xx_fh *fh = priv;
1395 struct em28xx *dev = fh->dev;
1396
1397 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1398 return -EINVAL;
1399
1400 cc->bounds.left = 0;
1401 cc->bounds.top = 0;
1402 cc->bounds.width = dev->width;
1403 cc->bounds.height = dev->height;
1404 cc->defrect = cc->bounds;
1405 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1406 cc->pixelaspect.denominator = 59;
1407
1408 return 0;
1409 }
1410
1411 static int vidioc_streamon(struct file *file, void *priv,
1412 enum v4l2_buf_type type)
1413 {
1414 struct em28xx_fh *fh = priv;
1415 struct em28xx *dev = fh->dev;
1416 int rc;
1417
1418 rc = check_dev(dev);
1419 if (rc < 0)
1420 return rc;
1421
1422
1423 mutex_lock(&dev->lock);
1424 rc = res_get(fh);
1425
1426 if (likely(rc >= 0))
1427 rc = videobuf_streamon(&fh->vb_vidq);
1428
1429 mutex_unlock(&dev->lock);
1430
1431 return rc;
1432 }
1433
1434 static int vidioc_streamoff(struct file *file, void *priv,
1435 enum v4l2_buf_type type)
1436 {
1437 struct em28xx_fh *fh = priv;
1438 struct em28xx *dev = fh->dev;
1439 int rc;
1440
1441 rc = check_dev(dev);
1442 if (rc < 0)
1443 return rc;
1444
1445 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1446 return -EINVAL;
1447 if (type != fh->type)
1448 return -EINVAL;
1449
1450 mutex_lock(&dev->lock);
1451
1452 videobuf_streamoff(&fh->vb_vidq);
1453 res_free(fh);
1454
1455 mutex_unlock(&dev->lock);
1456
1457 return 0;
1458 }
1459
1460 static int vidioc_querycap(struct file *file, void *priv,
1461 struct v4l2_capability *cap)
1462 {
1463 struct em28xx_fh *fh = priv;
1464 struct em28xx *dev = fh->dev;
1465
1466 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1467 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1468 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1469
1470 cap->version = EM28XX_VERSION_CODE;
1471
1472 cap->capabilities =
1473 V4L2_CAP_SLICED_VBI_CAPTURE |
1474 V4L2_CAP_VIDEO_CAPTURE |
1475 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1476
1477 if (dev->audio_mode.has_audio)
1478 cap->capabilities |= V4L2_CAP_AUDIO;
1479
1480 if (dev->tuner_type != TUNER_ABSENT)
1481 cap->capabilities |= V4L2_CAP_TUNER;
1482
1483 return 0;
1484 }
1485
1486 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1487 struct v4l2_fmtdesc *f)
1488 {
1489 if (unlikely(f->index >= ARRAY_SIZE(format)))
1490 return -EINVAL;
1491
1492 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1493 f->pixelformat = format[f->index].fourcc;
1494
1495 return 0;
1496 }
1497
1498 /* Sliced VBI ioctls */
1499 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1500 struct v4l2_format *f)
1501 {
1502 struct em28xx_fh *fh = priv;
1503 struct em28xx *dev = fh->dev;
1504 int rc;
1505
1506 rc = check_dev(dev);
1507 if (rc < 0)
1508 return rc;
1509
1510 mutex_lock(&dev->lock);
1511
1512 f->fmt.sliced.service_set = 0;
1513 v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1514
1515 if (f->fmt.sliced.service_set == 0)
1516 rc = -EINVAL;
1517
1518 mutex_unlock(&dev->lock);
1519
1520 return rc;
1521 }
1522
1523 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1524 struct v4l2_format *f)
1525 {
1526 struct em28xx_fh *fh = priv;
1527 struct em28xx *dev = fh->dev;
1528 int rc;
1529
1530 rc = check_dev(dev);
1531 if (rc < 0)
1532 return rc;
1533
1534 mutex_lock(&dev->lock);
1535 v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1536 mutex_unlock(&dev->lock);
1537
1538 if (f->fmt.sliced.service_set == 0)
1539 return -EINVAL;
1540
1541 return 0;
1542 }
1543
1544
1545 static int vidioc_reqbufs(struct file *file, void *priv,
1546 struct v4l2_requestbuffers *rb)
1547 {
1548 struct em28xx_fh *fh = priv;
1549 struct em28xx *dev = fh->dev;
1550 int rc;
1551
1552 rc = check_dev(dev);
1553 if (rc < 0)
1554 return rc;
1555
1556 return videobuf_reqbufs(&fh->vb_vidq, rb);
1557 }
1558
1559 static int vidioc_querybuf(struct file *file, void *priv,
1560 struct v4l2_buffer *b)
1561 {
1562 struct em28xx_fh *fh = priv;
1563 struct em28xx *dev = fh->dev;
1564 int rc;
1565
1566 rc = check_dev(dev);
1567 if (rc < 0)
1568 return rc;
1569
1570 return videobuf_querybuf(&fh->vb_vidq, b);
1571 }
1572
1573 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1574 {
1575 struct em28xx_fh *fh = priv;
1576 struct em28xx *dev = fh->dev;
1577 int rc;
1578
1579 rc = check_dev(dev);
1580 if (rc < 0)
1581 return rc;
1582
1583 return videobuf_qbuf(&fh->vb_vidq, b);
1584 }
1585
1586 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1587 {
1588 struct em28xx_fh *fh = priv;
1589 struct em28xx *dev = fh->dev;
1590 int rc;
1591
1592 rc = check_dev(dev);
1593 if (rc < 0)
1594 return rc;
1595
1596 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1597 }
1598
1599 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1600 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1601 {
1602 struct em28xx_fh *fh = priv;
1603
1604 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1605 }
1606 #endif
1607
1608
1609 /* ----------------------------------------------------------- */
1610 /* RADIO ESPECIFIC IOCTLS */
1611 /* ----------------------------------------------------------- */
1612
1613 static int radio_querycap(struct file *file, void *priv,
1614 struct v4l2_capability *cap)
1615 {
1616 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1617
1618 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1619 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1620 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1621
1622 cap->version = EM28XX_VERSION_CODE;
1623 cap->capabilities = V4L2_CAP_TUNER;
1624 return 0;
1625 }
1626
1627 static int radio_g_tuner(struct file *file, void *priv,
1628 struct v4l2_tuner *t)
1629 {
1630 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1631
1632 if (unlikely(t->index > 0))
1633 return -EINVAL;
1634
1635 strcpy(t->name, "Radio");
1636 t->type = V4L2_TUNER_RADIO;
1637
1638 mutex_lock(&dev->lock);
1639 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1640 mutex_unlock(&dev->lock);
1641
1642 return 0;
1643 }
1644
1645 static int radio_enum_input(struct file *file, void *priv,
1646 struct v4l2_input *i)
1647 {
1648 if (i->index != 0)
1649 return -EINVAL;
1650 strcpy(i->name, "Radio");
1651 i->type = V4L2_INPUT_TYPE_TUNER;
1652
1653 return 0;
1654 }
1655
1656 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1657 {
1658 if (unlikely(a->index))
1659 return -EINVAL;
1660
1661 strcpy(a->name, "Radio");
1662 return 0;
1663 }
1664
1665 static int radio_s_tuner(struct file *file, void *priv,
1666 struct v4l2_tuner *t)
1667 {
1668 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1669
1670 if (0 != t->index)
1671 return -EINVAL;
1672
1673 mutex_lock(&dev->lock);
1674 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1675 mutex_unlock(&dev->lock);
1676
1677 return 0;
1678 }
1679
1680 static int radio_s_audio(struct file *file, void *fh,
1681 struct v4l2_audio *a)
1682 {
1683 return 0;
1684 }
1685
1686 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1687 {
1688 return 0;
1689 }
1690
1691 static int radio_queryctrl(struct file *file, void *priv,
1692 struct v4l2_queryctrl *qc)
1693 {
1694 int i;
1695
1696 if (qc->id < V4L2_CID_BASE ||
1697 qc->id >= V4L2_CID_LASTP1)
1698 return -EINVAL;
1699
1700 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
1701 if (qc->id && qc->id == ac97_qctrl[i].id) {
1702 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
1703 return 0;
1704 }
1705 }
1706
1707 return -EINVAL;
1708 }
1709
1710 /*
1711 * em28xx_v4l2_open()
1712 * inits the device and starts isoc transfer
1713 */
1714 static int em28xx_v4l2_open(struct file *filp)
1715 {
1716 int minor = video_devdata(filp)->minor;
1717 int errCode = 0, radio;
1718 struct em28xx *dev;
1719 enum v4l2_buf_type fh_type;
1720 struct em28xx_fh *fh;
1721 enum v4l2_field field;
1722
1723 dev = em28xx_get_device(minor, &fh_type, &radio);
1724
1725 if (NULL == dev)
1726 return -ENODEV;
1727
1728 mutex_lock(&dev->lock);
1729
1730 em28xx_videodbg("open minor=%d type=%s users=%d\n",
1731 minor, v4l2_type_names[fh_type], dev->users);
1732
1733
1734 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1735 if (!fh) {
1736 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1737 mutex_unlock(&dev->lock);
1738 return -ENOMEM;
1739 }
1740 fh->dev = dev;
1741 fh->radio = radio;
1742 fh->type = fh_type;
1743 filp->private_data = fh;
1744
1745 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1746 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1747 em28xx_set_alternate(dev);
1748 em28xx_resolution_set(dev);
1749
1750 /* Needed, since GPIO might have disabled power of
1751 some i2c device
1752 */
1753 em28xx_wake_i2c(dev);
1754
1755 }
1756 if (fh->radio) {
1757 em28xx_videodbg("video_open: setting radio device\n");
1758 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1759 }
1760
1761 dev->users++;
1762
1763 if (dev->progressive)
1764 field = V4L2_FIELD_NONE;
1765 else
1766 field = V4L2_FIELD_INTERLACED;
1767
1768 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1769 NULL, &dev->slock, fh->type, field,
1770 sizeof(struct em28xx_buffer), fh);
1771
1772 mutex_unlock(&dev->lock);
1773
1774 return errCode;
1775 }
1776
1777 /*
1778 * em28xx_realease_resources()
1779 * unregisters the v4l2,i2c and usb devices
1780 * called when the device gets disconected or at module unload
1781 */
1782 void em28xx_release_analog_resources(struct em28xx *dev)
1783 {
1784
1785 /*FIXME: I2C IR should be disconnected */
1786
1787 if (dev->radio_dev) {
1788 if (-1 != dev->radio_dev->minor)
1789 video_unregister_device(dev->radio_dev);
1790 else
1791 video_device_release(dev->radio_dev);
1792 dev->radio_dev = NULL;
1793 }
1794 if (dev->vbi_dev) {
1795 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1796 dev->vbi_dev->num);
1797 if (-1 != dev->vbi_dev->minor)
1798 video_unregister_device(dev->vbi_dev);
1799 else
1800 video_device_release(dev->vbi_dev);
1801 dev->vbi_dev = NULL;
1802 }
1803 if (dev->vdev) {
1804 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1805 dev->vdev->num);
1806 if (-1 != dev->vdev->minor)
1807 video_unregister_device(dev->vdev);
1808 else
1809 video_device_release(dev->vdev);
1810 dev->vdev = NULL;
1811 }
1812 }
1813
1814 /*
1815 * em28xx_v4l2_close()
1816 * stops streaming and deallocates all resources allocated by the v4l2
1817 * calls and ioctls
1818 */
1819 static int em28xx_v4l2_close(struct file *filp)
1820 {
1821 struct em28xx_fh *fh = filp->private_data;
1822 struct em28xx *dev = fh->dev;
1823 int errCode;
1824
1825 em28xx_videodbg("users=%d\n", dev->users);
1826
1827
1828 mutex_lock(&dev->lock);
1829 if (res_check(fh))
1830 res_free(fh);
1831
1832 if (dev->users == 1) {
1833 videobuf_stop(&fh->vb_vidq);
1834 videobuf_mmap_free(&fh->vb_vidq);
1835
1836 /* the device is already disconnect,
1837 free the remaining resources */
1838 if (dev->state & DEV_DISCONNECTED) {
1839 em28xx_release_resources(dev);
1840 mutex_unlock(&dev->lock);
1841 kfree(dev);
1842 return 0;
1843 }
1844
1845 /* Save some power by putting tuner to sleep */
1846 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1847
1848 /* do this before setting alternate! */
1849 em28xx_uninit_isoc(dev);
1850 em28xx_set_mode(dev, EM28XX_SUSPEND);
1851
1852 /* set alternate 0 */
1853 dev->alt = 0;
1854 em28xx_videodbg("setting alternate 0\n");
1855 errCode = usb_set_interface(dev->udev, 0, 0);
1856 if (errCode < 0) {
1857 em28xx_errdev("cannot change alternate number to "
1858 "0 (error=%i)\n", errCode);
1859 }
1860 }
1861 kfree(fh);
1862 dev->users--;
1863 wake_up_interruptible_nr(&dev->open, 1);
1864 mutex_unlock(&dev->lock);
1865 return 0;
1866 }
1867
1868 /*
1869 * em28xx_v4l2_read()
1870 * will allocate buffers when called for the first time
1871 */
1872 static ssize_t
1873 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1874 loff_t *pos)
1875 {
1876 struct em28xx_fh *fh = filp->private_data;
1877 struct em28xx *dev = fh->dev;
1878 int rc;
1879
1880 rc = check_dev(dev);
1881 if (rc < 0)
1882 return rc;
1883
1884 /* FIXME: read() is not prepared to allow changing the video
1885 resolution while streaming. Seems a bug at em28xx_set_fmt
1886 */
1887
1888 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1889 mutex_lock(&dev->lock);
1890 rc = res_get(fh);
1891 mutex_unlock(&dev->lock);
1892
1893 if (unlikely(rc < 0))
1894 return rc;
1895
1896 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1897 filp->f_flags & O_NONBLOCK);
1898 }
1899 return 0;
1900 }
1901
1902 /*
1903 * em28xx_v4l2_poll()
1904 * will allocate buffers when called for the first time
1905 */
1906 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1907 {
1908 struct em28xx_fh *fh = filp->private_data;
1909 struct em28xx *dev = fh->dev;
1910 int rc;
1911
1912 rc = check_dev(dev);
1913 if (rc < 0)
1914 return rc;
1915
1916 mutex_lock(&dev->lock);
1917 rc = res_get(fh);
1918 mutex_unlock(&dev->lock);
1919
1920 if (unlikely(rc < 0))
1921 return POLLERR;
1922
1923 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1924 return POLLERR;
1925
1926 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1927 }
1928
1929 /*
1930 * em28xx_v4l2_mmap()
1931 */
1932 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1933 {
1934 struct em28xx_fh *fh = filp->private_data;
1935 struct em28xx *dev = fh->dev;
1936 int rc;
1937
1938 rc = check_dev(dev);
1939 if (rc < 0)
1940 return rc;
1941
1942 mutex_lock(&dev->lock);
1943 rc = res_get(fh);
1944 mutex_unlock(&dev->lock);
1945
1946 if (unlikely(rc < 0))
1947 return rc;
1948
1949 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1950
1951 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1952 (unsigned long)vma->vm_start,
1953 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1954 rc);
1955
1956 return rc;
1957 }
1958
1959 static const struct v4l2_file_operations em28xx_v4l_fops = {
1960 .owner = THIS_MODULE,
1961 .open = em28xx_v4l2_open,
1962 .release = em28xx_v4l2_close,
1963 .read = em28xx_v4l2_read,
1964 .poll = em28xx_v4l2_poll,
1965 .mmap = em28xx_v4l2_mmap,
1966 .ioctl = video_ioctl2,
1967 };
1968
1969 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1970 .vidioc_querycap = vidioc_querycap,
1971 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1972 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1973 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1974 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1975 .vidioc_g_audio = vidioc_g_audio,
1976 .vidioc_s_audio = vidioc_s_audio,
1977 .vidioc_cropcap = vidioc_cropcap,
1978
1979 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
1980 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1981 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1982
1983 .vidioc_reqbufs = vidioc_reqbufs,
1984 .vidioc_querybuf = vidioc_querybuf,
1985 .vidioc_qbuf = vidioc_qbuf,
1986 .vidioc_dqbuf = vidioc_dqbuf,
1987 .vidioc_s_std = vidioc_s_std,
1988 .vidioc_g_parm = vidioc_g_parm,
1989 .vidioc_s_parm = vidioc_s_parm,
1990 .vidioc_enum_input = vidioc_enum_input,
1991 .vidioc_g_input = vidioc_g_input,
1992 .vidioc_s_input = vidioc_s_input,
1993 .vidioc_queryctrl = vidioc_queryctrl,
1994 .vidioc_g_ctrl = vidioc_g_ctrl,
1995 .vidioc_s_ctrl = vidioc_s_ctrl,
1996 .vidioc_streamon = vidioc_streamon,
1997 .vidioc_streamoff = vidioc_streamoff,
1998 .vidioc_g_tuner = vidioc_g_tuner,
1999 .vidioc_s_tuner = vidioc_s_tuner,
2000 .vidioc_g_frequency = vidioc_g_frequency,
2001 .vidioc_s_frequency = vidioc_s_frequency,
2002 #ifdef CONFIG_VIDEO_ADV_DEBUG
2003 .vidioc_g_register = vidioc_g_register,
2004 .vidioc_s_register = vidioc_s_register,
2005 .vidioc_g_chip_ident = vidioc_g_chip_ident,
2006 #endif
2007 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2008 .vidiocgmbuf = vidiocgmbuf,
2009 #endif
2010 };
2011
2012 static const struct video_device em28xx_video_template = {
2013 .fops = &em28xx_v4l_fops,
2014 .release = video_device_release,
2015 .ioctl_ops = &video_ioctl_ops,
2016
2017 .minor = -1,
2018
2019 .tvnorms = V4L2_STD_ALL,
2020 .current_norm = V4L2_STD_PAL,
2021 };
2022
2023 static const struct v4l2_file_operations radio_fops = {
2024 .owner = THIS_MODULE,
2025 .open = em28xx_v4l2_open,
2026 .release = em28xx_v4l2_close,
2027 .ioctl = video_ioctl2,
2028 };
2029
2030 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2031 .vidioc_querycap = radio_querycap,
2032 .vidioc_g_tuner = radio_g_tuner,
2033 .vidioc_enum_input = radio_enum_input,
2034 .vidioc_g_audio = radio_g_audio,
2035 .vidioc_s_tuner = radio_s_tuner,
2036 .vidioc_s_audio = radio_s_audio,
2037 .vidioc_s_input = radio_s_input,
2038 .vidioc_queryctrl = radio_queryctrl,
2039 .vidioc_g_ctrl = vidioc_g_ctrl,
2040 .vidioc_s_ctrl = vidioc_s_ctrl,
2041 .vidioc_g_frequency = vidioc_g_frequency,
2042 .vidioc_s_frequency = vidioc_s_frequency,
2043 #ifdef CONFIG_VIDEO_ADV_DEBUG
2044 .vidioc_g_register = vidioc_g_register,
2045 .vidioc_s_register = vidioc_s_register,
2046 #endif
2047 };
2048
2049 static struct video_device em28xx_radio_template = {
2050 .name = "em28xx-radio",
2051 .fops = &radio_fops,
2052 .ioctl_ops = &radio_ioctl_ops,
2053 .minor = -1,
2054 };
2055
2056 /******************************** usb interface ******************************/
2057
2058
2059
2060 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2061 const struct video_device *template,
2062 const char *type_name)
2063 {
2064 struct video_device *vfd;
2065
2066 vfd = video_device_alloc();
2067 if (NULL == vfd)
2068 return NULL;
2069
2070 *vfd = *template;
2071 vfd->minor = -1;
2072 vfd->v4l2_dev = &dev->v4l2_dev;
2073 vfd->release = video_device_release;
2074 vfd->debug = video_debug;
2075
2076 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2077 dev->name, type_name);
2078
2079 return vfd;
2080 }
2081
2082 int em28xx_register_analog_devices(struct em28xx *dev)
2083 {
2084 u8 val;
2085 int ret;
2086
2087 printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2088 dev->name,
2089 (EM28XX_VERSION_CODE >> 16) & 0xff,
2090 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2091
2092 /* set default norm */
2093 dev->norm = em28xx_video_template.current_norm;
2094 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2095 dev->ctl_input = 0;
2096
2097 /* Analog specific initialization */
2098 dev->format = &format[0];
2099 em28xx_set_video_format(dev, format[0].fourcc,
2100 norm_maxw(dev), norm_maxh(dev));
2101
2102 video_mux(dev, dev->ctl_input);
2103
2104 /* Audio defaults */
2105 dev->mute = 1;
2106 dev->volume = 0x1f;
2107
2108 /* enable vbi capturing */
2109
2110 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2111 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2112 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2113 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2114 em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2115
2116 em28xx_set_outfmt(dev);
2117 em28xx_colorlevels_set_default(dev);
2118 em28xx_compression_disable(dev);
2119
2120 /* allocate and fill video video_device struct */
2121 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2122 if (!dev->vdev) {
2123 em28xx_errdev("cannot allocate video_device.\n");
2124 return -ENODEV;
2125 }
2126
2127 /* register v4l2 video video_device */
2128 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2129 video_nr[dev->devno]);
2130 if (ret) {
2131 em28xx_errdev("unable to register video device (error=%i).\n",
2132 ret);
2133 return ret;
2134 }
2135
2136 /* Allocate and fill vbi video_device struct */
2137 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2138
2139 /* register v4l2 vbi video_device */
2140 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2141 vbi_nr[dev->devno]);
2142 if (ret < 0) {
2143 em28xx_errdev("unable to register vbi device\n");
2144 return ret;
2145 }
2146
2147 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2148 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2149 "radio");
2150 if (!dev->radio_dev) {
2151 em28xx_errdev("cannot allocate video_device.\n");
2152 return -ENODEV;
2153 }
2154 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2155 radio_nr[dev->devno]);
2156 if (ret < 0) {
2157 em28xx_errdev("can't register radio device\n");
2158 return ret;
2159 }
2160 em28xx_info("Registered radio device as /dev/radio%d\n",
2161 dev->radio_dev->num);
2162 }
2163
2164 em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2165 dev->vdev->num, dev->vbi_dev->num);
2166
2167 return 0;
2168 }
Linux with added FPC-III support