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[media] v4l2: add const to argument of write-only s_frequency ioctl
[deliverable/linux.git] / drivers / media / usb / em28xx / em28xx-video.c
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 Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
10
11 Some parts based on SN9C10x PC Camera Controllers GPL driver made
12 by Luca Risolia <luca.risolia@studio.unibo.it>
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29 #include <linux/init.h>
30 #include <linux/list.h>
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/bitmap.h>
34 #include <linux/usb.h>
35 #include <linux/i2c.h>
36 #include <linux/mm.h>
37 #include <linux/mutex.h>
38 #include <linux/slab.h>
39
40 #include "em28xx.h"
41 #include <media/v4l2-common.h>
42 #include <media/v4l2-ioctl.h>
43 #include <media/v4l2-event.h>
44 #include <media/v4l2-chip-ident.h>
45 #include <media/msp3400.h>
46 #include <media/tuner.h>
47
48 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
49 "Markus Rechberger <mrechberger@gmail.com>, " \
50 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
51 "Sascha Sommer <saschasommer@freenet.de>"
52
53 #define DRIVER_DESC "Empia em28xx based USB video device driver"
54
55 #define EM28XX_VERSION "0.2.0"
56
57 #define em28xx_videodbg(fmt, arg...) do {\
58 if (video_debug) \
59 printk(KERN_INFO "%s %s :"fmt, \
60 dev->name, __func__ , ##arg); } while (0)
61
62 static unsigned int isoc_debug;
63 module_param(isoc_debug, int, 0644);
64 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
65
66 #define em28xx_isocdbg(fmt, arg...) \
67 do {\
68 if (isoc_debug) { \
69 printk(KERN_INFO "%s %s :"fmt, \
70 dev->name, __func__ , ##arg); \
71 } \
72 } while (0)
73
74 MODULE_AUTHOR(DRIVER_AUTHOR);
75 MODULE_DESCRIPTION(DRIVER_DESC);
76 MODULE_LICENSE("GPL");
77 MODULE_VERSION(EM28XX_VERSION);
78
79 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
80 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
81 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
82
83 module_param_array(video_nr, int, NULL, 0444);
84 module_param_array(vbi_nr, int, NULL, 0444);
85 module_param_array(radio_nr, int, NULL, 0444);
86 MODULE_PARM_DESC(video_nr, "video device numbers");
87 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
88 MODULE_PARM_DESC(radio_nr, "radio device numbers");
89
90 static unsigned int video_debug;
91 module_param(video_debug, int, 0644);
92 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
93
94 /* supported video standards */
95 static struct em28xx_fmt format[] = {
96 {
97 .name = "16 bpp YUY2, 4:2:2, packed",
98 .fourcc = V4L2_PIX_FMT_YUYV,
99 .depth = 16,
100 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
101 }, {
102 .name = "16 bpp RGB 565, LE",
103 .fourcc = V4L2_PIX_FMT_RGB565,
104 .depth = 16,
105 .reg = EM28XX_OUTFMT_RGB_16_656,
106 }, {
107 .name = "8 bpp Bayer BGBG..GRGR",
108 .fourcc = V4L2_PIX_FMT_SBGGR8,
109 .depth = 8,
110 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
111 }, {
112 .name = "8 bpp Bayer GRGR..BGBG",
113 .fourcc = V4L2_PIX_FMT_SGRBG8,
114 .depth = 8,
115 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
116 }, {
117 .name = "8 bpp Bayer GBGB..RGRG",
118 .fourcc = V4L2_PIX_FMT_SGBRG8,
119 .depth = 8,
120 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
121 }, {
122 .name = "12 bpp YUV411",
123 .fourcc = V4L2_PIX_FMT_YUV411P,
124 .depth = 12,
125 .reg = EM28XX_OUTFMT_YUV411,
126 },
127 };
128
129 /* ------------------------------------------------------------------
130 DMA and thread functions
131 ------------------------------------------------------------------*/
132
133 /*
134 * Finish the current buffer
135 */
136 static inline void finish_buffer(struct em28xx *dev,
137 struct em28xx_buffer *buf)
138 {
139 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
140
141 buf->vb.v4l2_buf.sequence = dev->field_count++;
142 buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
143 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
144
145 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
146 }
147
148 /*
149 * Copy picture data from USB buffer to videobuf buffer
150 */
151 static void em28xx_copy_video(struct em28xx *dev,
152 struct em28xx_buffer *buf,
153 unsigned char *usb_buf,
154 unsigned long len)
155 {
156 void *fieldstart, *startwrite, *startread;
157 int linesdone, currlinedone, offset, lencopy, remain;
158 int bytesperline = dev->width << 1;
159
160 if (buf->pos + len > buf->length)
161 len = buf->length - buf->pos;
162
163 startread = usb_buf;
164 remain = len;
165
166 if (dev->progressive || buf->top_field)
167 fieldstart = buf->vb_buf;
168 else /* interlaced mode, even nr. of lines */
169 fieldstart = buf->vb_buf + bytesperline;
170
171 linesdone = buf->pos / bytesperline;
172 currlinedone = buf->pos % bytesperline;
173
174 if (dev->progressive)
175 offset = linesdone * bytesperline + currlinedone;
176 else
177 offset = linesdone * bytesperline * 2 + currlinedone;
178
179 startwrite = fieldstart + offset;
180 lencopy = bytesperline - currlinedone;
181 lencopy = lencopy > remain ? remain : lencopy;
182
183 if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
184 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
185 ((char *)startwrite + lencopy) -
186 ((char *)buf->vb_buf + buf->length));
187 remain = (char *)buf->vb_buf + buf->length -
188 (char *)startwrite;
189 lencopy = remain;
190 }
191 if (lencopy <= 0)
192 return;
193 memcpy(startwrite, startread, lencopy);
194
195 remain -= lencopy;
196
197 while (remain > 0) {
198 if (dev->progressive)
199 startwrite += lencopy;
200 else
201 startwrite += lencopy + bytesperline;
202 startread += lencopy;
203 if (bytesperline > remain)
204 lencopy = remain;
205 else
206 lencopy = bytesperline;
207
208 if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
209 buf->length) {
210 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
211 "(2)\n",
212 ((char *)startwrite + lencopy) -
213 ((char *)buf->vb_buf + buf->length));
214 lencopy = remain = (char *)buf->vb_buf + buf->length -
215 (char *)startwrite;
216 }
217 if (lencopy <= 0)
218 break;
219
220 memcpy(startwrite, startread, lencopy);
221
222 remain -= lencopy;
223 }
224
225 buf->pos += len;
226 }
227
228 /*
229 * Copy VBI data from USB buffer to videobuf buffer
230 */
231 static void em28xx_copy_vbi(struct em28xx *dev,
232 struct em28xx_buffer *buf,
233 unsigned char *usb_buf,
234 unsigned long len)
235 {
236 unsigned int offset;
237
238 if (buf->pos + len > buf->length)
239 len = buf->length - buf->pos;
240
241 offset = buf->pos;
242 /* Make sure the bottom field populates the second half of the frame */
243 if (buf->top_field == 0)
244 offset += dev->vbi_width * dev->vbi_height;
245
246 memcpy(buf->vb_buf + offset, usb_buf, len);
247 buf->pos += len;
248 }
249
250 static inline void print_err_status(struct em28xx *dev,
251 int packet, int status)
252 {
253 char *errmsg = "Unknown";
254
255 switch (status) {
256 case -ENOENT:
257 errmsg = "unlinked synchronuously";
258 break;
259 case -ECONNRESET:
260 errmsg = "unlinked asynchronuously";
261 break;
262 case -ENOSR:
263 errmsg = "Buffer error (overrun)";
264 break;
265 case -EPIPE:
266 errmsg = "Stalled (device not responding)";
267 break;
268 case -EOVERFLOW:
269 errmsg = "Babble (bad cable?)";
270 break;
271 case -EPROTO:
272 errmsg = "Bit-stuff error (bad cable?)";
273 break;
274 case -EILSEQ:
275 errmsg = "CRC/Timeout (could be anything)";
276 break;
277 case -ETIME:
278 errmsg = "Device does not respond";
279 break;
280 }
281 if (packet < 0) {
282 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
283 } else {
284 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
285 packet, status, errmsg);
286 }
287 }
288
289 /*
290 * get the next available buffer from dma queue
291 */
292 static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
293 struct em28xx_dmaqueue *dma_q)
294 {
295 struct em28xx_buffer *buf;
296
297 if (list_empty(&dma_q->active)) {
298 em28xx_isocdbg("No active queue to serve\n");
299 return NULL;
300 }
301
302 /* Get the next buffer */
303 buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
304 /* Cleans up buffer - Useful for testing for frame/URB loss */
305 list_del(&buf->list);
306 buf->pos = 0;
307 buf->vb_buf = buf->mem;
308
309 return buf;
310 }
311
312 /*
313 * Finish the current buffer if completed and prepare for the next field
314 */
315 static struct em28xx_buffer *
316 finish_field_prepare_next(struct em28xx *dev,
317 struct em28xx_buffer *buf,
318 struct em28xx_dmaqueue *dma_q)
319 {
320 if (dev->progressive || dev->top_field) { /* Brand new frame */
321 if (buf != NULL)
322 finish_buffer(dev, buf);
323 buf = get_next_buf(dev, dma_q);
324 }
325 if (buf != NULL) {
326 buf->top_field = dev->top_field;
327 buf->pos = 0;
328 }
329
330 return buf;
331 }
332
333 /*
334 * Process data packet according to the em2710/em2750/em28xx frame data format
335 */
336 static inline void process_frame_data_em28xx(struct em28xx *dev,
337 unsigned char *data_pkt,
338 unsigned int data_len)
339 {
340 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
341 struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf;
342 struct em28xx_dmaqueue *dma_q = &dev->vidq;
343 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
344
345 /* capture type 0 = vbi start
346 capture type 1 = vbi in progress
347 capture type 2 = video start
348 capture type 3 = video in progress */
349 if (data_len >= 4) {
350 /* NOTE: Headers are always 4 bytes and
351 * never split across packets */
352 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
353 data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
354 /* Continuation */
355 data_pkt += 4;
356 data_len -= 4;
357 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
358 /* Field start (VBI mode) */
359 dev->capture_type = 0;
360 dev->vbi_read = 0;
361 em28xx_isocdbg("VBI START HEADER !!!\n");
362 dev->top_field = !(data_pkt[2] & 1);
363 data_pkt += 4;
364 data_len -= 4;
365 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
366 /* Field start (VBI disabled) */
367 dev->capture_type = 2;
368 em28xx_isocdbg("VIDEO START HEADER !!!\n");
369 dev->top_field = !(data_pkt[2] & 1);
370 data_pkt += 4;
371 data_len -= 4;
372 }
373 }
374 /* NOTE: With bulk transfers, intermediate data packets
375 * have no continuation header */
376
377 if (dev->capture_type == 0) {
378 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
379 dev->usb_ctl.vbi_buf = vbi_buf;
380 dev->capture_type = 1;
381 }
382
383 if (dev->capture_type == 1) {
384 int vbi_size = dev->vbi_width * dev->vbi_height;
385 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
386 (vbi_size - dev->vbi_read) : data_len;
387
388 /* Copy VBI data */
389 if (vbi_buf != NULL)
390 em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
391 dev->vbi_read += vbi_data_len;
392
393 if (vbi_data_len < data_len) {
394 /* Continue with copying video data */
395 dev->capture_type = 2;
396 data_pkt += vbi_data_len;
397 data_len -= vbi_data_len;
398 }
399 }
400
401 if (dev->capture_type == 2) {
402 buf = finish_field_prepare_next(dev, buf, dma_q);
403 dev->usb_ctl.vid_buf = buf;
404 dev->capture_type = 3;
405 }
406
407 if (dev->capture_type == 3 && buf != NULL && data_len > 0)
408 em28xx_copy_video(dev, buf, data_pkt, data_len);
409 }
410
411 /* Processes and copies the URB data content (video and VBI data) */
412 static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
413 {
414 int xfer_bulk, num_packets, i;
415 unsigned char *usb_data_pkt;
416 unsigned int usb_data_len;
417
418 if (!dev)
419 return 0;
420
421 if (dev->disconnected)
422 return 0;
423
424 if (urb->status < 0)
425 print_err_status(dev, -1, urb->status);
426
427 xfer_bulk = usb_pipebulk(urb->pipe);
428
429 if (xfer_bulk) /* bulk */
430 num_packets = 1;
431 else /* isoc */
432 num_packets = urb->number_of_packets;
433
434 for (i = 0; i < num_packets; i++) {
435 if (xfer_bulk) { /* bulk */
436 usb_data_len = urb->actual_length;
437
438 usb_data_pkt = urb->transfer_buffer;
439 } else { /* isoc */
440 if (urb->iso_frame_desc[i].status < 0) {
441 print_err_status(dev, i,
442 urb->iso_frame_desc[i].status);
443 if (urb->iso_frame_desc[i].status != -EPROTO)
444 continue;
445 }
446
447 usb_data_len = urb->iso_frame_desc[i].actual_length;
448 if (usb_data_len > dev->max_pkt_size) {
449 em28xx_isocdbg("packet bigger than packet size");
450 continue;
451 }
452
453 usb_data_pkt = urb->transfer_buffer +
454 urb->iso_frame_desc[i].offset;
455 }
456
457 if (usb_data_len == 0) {
458 /* NOTE: happens very often with isoc transfers */
459 /* em28xx_usbdbg("packet %d is empty",i); - spammy */
460 continue;
461 }
462
463 process_frame_data_em28xx(dev, usb_data_pkt, usb_data_len);
464 }
465 return 1;
466 }
467
468
469 static int get_ressource(enum v4l2_buf_type f_type)
470 {
471 switch (f_type) {
472 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
473 return EM28XX_RESOURCE_VIDEO;
474 case V4L2_BUF_TYPE_VBI_CAPTURE:
475 return EM28XX_RESOURCE_VBI;
476 default:
477 BUG();
478 return 0;
479 }
480 }
481
482 /* Usage lock check functions */
483 static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
484 {
485 int res_type = get_ressource(f_type);
486
487 /* is it free? */
488 if (dev->resources & res_type) {
489 /* no, someone else uses it */
490 return -EBUSY;
491 }
492
493 /* it's free, grab it */
494 dev->resources |= res_type;
495 em28xx_videodbg("res: get %d\n", res_type);
496 return 0;
497 }
498
499 static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
500 {
501 int res_type = get_ressource(f_type);
502
503 dev->resources &= ~res_type;
504 em28xx_videodbg("res: put %d\n", res_type);
505 }
506
507 /* ------------------------------------------------------------------
508 Videobuf2 operations
509 ------------------------------------------------------------------*/
510
511 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
512 unsigned int *nbuffers, unsigned int *nplanes,
513 unsigned int sizes[], void *alloc_ctxs[])
514 {
515 struct em28xx *dev = vb2_get_drv_priv(vq);
516 unsigned long size;
517
518 if (fmt)
519 size = fmt->fmt.pix.sizeimage;
520 else
521 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
522
523 if (size == 0)
524 return -EINVAL;
525
526 if (0 == *nbuffers)
527 *nbuffers = 32;
528
529 *nplanes = 1;
530 sizes[0] = size;
531
532 return 0;
533 }
534
535 static int
536 buffer_prepare(struct vb2_buffer *vb)
537 {
538 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
539 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
540 unsigned long size;
541
542 em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
543
544 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
545
546 if (vb2_plane_size(vb, 0) < size) {
547 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
548 __func__, vb2_plane_size(vb, 0), size);
549 return -EINVAL;
550 }
551 vb2_set_plane_payload(&buf->vb, 0, size);
552
553 return 0;
554 }
555
556 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
557 {
558 struct em28xx *dev = vb2_get_drv_priv(vq);
559 struct v4l2_frequency f;
560 int rc = 0;
561
562 em28xx_videodbg("%s\n", __func__);
563
564 /* Make sure streaming is not already in progress for this type
565 of filehandle (e.g. video, vbi) */
566 rc = res_get(dev, vq->type);
567 if (rc)
568 return rc;
569
570 if (dev->streaming_users++ == 0) {
571 /* First active streaming user, so allocate all the URBs */
572
573 /* Allocate the USB bandwidth */
574 em28xx_set_alternate(dev);
575
576 /* Needed, since GPIO might have disabled power of
577 some i2c device
578 */
579 em28xx_wake_i2c(dev);
580
581 dev->capture_type = -1;
582 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
583 dev->analog_xfer_bulk,
584 EM28XX_NUM_BUFS,
585 dev->max_pkt_size,
586 dev->packet_multiplier,
587 em28xx_urb_data_copy);
588 if (rc < 0)
589 goto fail;
590
591 /*
592 * djh: it's not clear whether this code is still needed. I'm
593 * leaving it in here for now entirely out of concern for
594 * backward compatibility (the old code did it)
595 */
596
597 /* Ask tuner to go to analog or radio mode */
598 memset(&f, 0, sizeof(f));
599 f.frequency = dev->ctl_freq;
600 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
601 f.type = V4L2_TUNER_RADIO;
602 else
603 f.type = V4L2_TUNER_ANALOG_TV;
604 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
605 }
606
607 fail:
608 return rc;
609 }
610
611 static int em28xx_stop_streaming(struct vb2_queue *vq)
612 {
613 struct em28xx *dev = vb2_get_drv_priv(vq);
614 struct em28xx_dmaqueue *vidq = &dev->vidq;
615 unsigned long flags = 0;
616
617 em28xx_videodbg("%s\n", __func__);
618
619 res_free(dev, vq->type);
620
621 if (dev->streaming_users-- == 1) {
622 /* Last active user, so shutdown all the URBS */
623 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
624 }
625
626 spin_lock_irqsave(&dev->slock, flags);
627 while (!list_empty(&vidq->active)) {
628 struct em28xx_buffer *buf;
629 buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
630 list_del(&buf->list);
631 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
632 }
633 dev->usb_ctl.vid_buf = NULL;
634 spin_unlock_irqrestore(&dev->slock, flags);
635
636 return 0;
637 }
638
639 int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
640 {
641 struct em28xx *dev = vb2_get_drv_priv(vq);
642 struct em28xx_dmaqueue *vbiq = &dev->vbiq;
643 unsigned long flags = 0;
644
645 em28xx_videodbg("%s\n", __func__);
646
647 res_free(dev, vq->type);
648
649 if (dev->streaming_users-- == 1) {
650 /* Last active user, so shutdown all the URBS */
651 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
652 }
653
654 spin_lock_irqsave(&dev->slock, flags);
655 while (!list_empty(&vbiq->active)) {
656 struct em28xx_buffer *buf;
657 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
658 list_del(&buf->list);
659 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
660 }
661 dev->usb_ctl.vbi_buf = NULL;
662 spin_unlock_irqrestore(&dev->slock, flags);
663
664 return 0;
665 }
666
667 static void
668 buffer_queue(struct vb2_buffer *vb)
669 {
670 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
671 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
672 struct em28xx_dmaqueue *vidq = &dev->vidq;
673 unsigned long flags = 0;
674
675 em28xx_videodbg("%s\n", __func__);
676 buf->mem = vb2_plane_vaddr(vb, 0);
677 buf->length = vb2_plane_size(vb, 0);
678
679 spin_lock_irqsave(&dev->slock, flags);
680 list_add_tail(&buf->list, &vidq->active);
681 spin_unlock_irqrestore(&dev->slock, flags);
682 }
683
684 static struct vb2_ops em28xx_video_qops = {
685 .queue_setup = queue_setup,
686 .buf_prepare = buffer_prepare,
687 .buf_queue = buffer_queue,
688 .start_streaming = em28xx_start_analog_streaming,
689 .stop_streaming = em28xx_stop_streaming,
690 .wait_prepare = vb2_ops_wait_prepare,
691 .wait_finish = vb2_ops_wait_finish,
692 };
693
694 int em28xx_vb2_setup(struct em28xx *dev)
695 {
696 int rc;
697 struct vb2_queue *q;
698
699 /* Setup Videobuf2 for Video capture */
700 q = &dev->vb_vidq;
701 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
702 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
703 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
704 q->drv_priv = dev;
705 q->buf_struct_size = sizeof(struct em28xx_buffer);
706 q->ops = &em28xx_video_qops;
707 q->mem_ops = &vb2_vmalloc_memops;
708
709 rc = vb2_queue_init(q);
710 if (rc < 0)
711 return rc;
712
713 /* Setup Videobuf2 for VBI capture */
714 q = &dev->vb_vbiq;
715 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
716 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
717 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
718 q->drv_priv = dev;
719 q->buf_struct_size = sizeof(struct em28xx_buffer);
720 q->ops = &em28xx_vbi_qops;
721 q->mem_ops = &vb2_vmalloc_memops;
722
723 rc = vb2_queue_init(q);
724 if (rc < 0)
725 return rc;
726
727 return 0;
728 }
729
730 /********************* v4l2 interface **************************************/
731
732 static void video_mux(struct em28xx *dev, int index)
733 {
734 dev->ctl_input = index;
735 dev->ctl_ainput = INPUT(index)->amux;
736 dev->ctl_aoutput = INPUT(index)->aout;
737
738 if (!dev->ctl_aoutput)
739 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
740
741 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
742 INPUT(index)->vmux, 0, 0);
743
744 if (dev->board.has_msp34xx) {
745 if (dev->i2s_speed) {
746 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
747 s_i2s_clock_freq, dev->i2s_speed);
748 }
749 /* Note: this is msp3400 specific */
750 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
751 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
752 }
753
754 if (dev->board.adecoder != EM28XX_NOADECODER) {
755 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
756 dev->ctl_ainput, dev->ctl_aoutput, 0);
757 }
758
759 em28xx_audio_analog_set(dev);
760 }
761
762 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
763 {
764 struct em28xx *dev = priv;
765
766 /*
767 * In the case of non-AC97 volume controls, we still need
768 * to do some setups at em28xx, in order to mute/unmute
769 * and to adjust audio volume. However, the value ranges
770 * should be checked by the corresponding V4L subdriver.
771 */
772 switch (ctrl->id) {
773 case V4L2_CID_AUDIO_MUTE:
774 dev->mute = ctrl->val;
775 em28xx_audio_analog_set(dev);
776 break;
777 case V4L2_CID_AUDIO_VOLUME:
778 dev->volume = ctrl->val;
779 em28xx_audio_analog_set(dev);
780 break;
781 }
782 }
783
784 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
785 {
786 struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
787 int ret = -EINVAL;
788
789 switch (ctrl->id) {
790 case V4L2_CID_AUDIO_MUTE:
791 dev->mute = ctrl->val;
792 ret = em28xx_audio_analog_set(dev);
793 break;
794 case V4L2_CID_AUDIO_VOLUME:
795 dev->volume = ctrl->val;
796 ret = em28xx_audio_analog_set(dev);
797 break;
798 case V4L2_CID_CONTRAST:
799 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
800 break;
801 case V4L2_CID_BRIGHTNESS:
802 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
803 break;
804 case V4L2_CID_SATURATION:
805 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
806 break;
807 case V4L2_CID_BLUE_BALANCE:
808 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
809 break;
810 case V4L2_CID_RED_BALANCE:
811 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
812 break;
813 case V4L2_CID_SHARPNESS:
814 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
815 break;
816 }
817
818 return (ret < 0) ? ret : 0;
819 }
820
821 const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
822 .s_ctrl = em28xx_s_ctrl,
823 };
824
825 static void size_to_scale(struct em28xx *dev,
826 unsigned int width, unsigned int height,
827 unsigned int *hscale, unsigned int *vscale)
828 {
829 unsigned int maxw = norm_maxw(dev);
830 unsigned int maxh = norm_maxh(dev);
831
832 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
833 if (*hscale > EM28XX_HVSCALE_MAX)
834 *hscale = EM28XX_HVSCALE_MAX;
835
836 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
837 if (*vscale > EM28XX_HVSCALE_MAX)
838 *vscale = EM28XX_HVSCALE_MAX;
839 }
840
841 static void scale_to_size(struct em28xx *dev,
842 unsigned int hscale, unsigned int vscale,
843 unsigned int *width, unsigned int *height)
844 {
845 unsigned int maxw = norm_maxw(dev);
846 unsigned int maxh = norm_maxh(dev);
847
848 *width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
849 *height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
850 }
851
852 /* ------------------------------------------------------------------
853 IOCTL vidioc handling
854 ------------------------------------------------------------------*/
855
856 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
857 struct v4l2_format *f)
858 {
859 struct em28xx_fh *fh = priv;
860 struct em28xx *dev = fh->dev;
861
862 f->fmt.pix.width = dev->width;
863 f->fmt.pix.height = dev->height;
864 f->fmt.pix.pixelformat = dev->format->fourcc;
865 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
866 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
867 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
868
869 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
870 if (dev->progressive)
871 f->fmt.pix.field = V4L2_FIELD_NONE;
872 else
873 f->fmt.pix.field = dev->interlaced ?
874 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
875 return 0;
876 }
877
878 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
879 {
880 unsigned int i;
881
882 for (i = 0; i < ARRAY_SIZE(format); i++)
883 if (format[i].fourcc == fourcc)
884 return &format[i];
885
886 return NULL;
887 }
888
889 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
890 struct v4l2_format *f)
891 {
892 struct em28xx_fh *fh = priv;
893 struct em28xx *dev = fh->dev;
894 unsigned int width = f->fmt.pix.width;
895 unsigned int height = f->fmt.pix.height;
896 unsigned int maxw = norm_maxw(dev);
897 unsigned int maxh = norm_maxh(dev);
898 unsigned int hscale, vscale;
899 struct em28xx_fmt *fmt;
900
901 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
902 if (!fmt) {
903 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
904 f->fmt.pix.pixelformat);
905 return -EINVAL;
906 }
907
908 if (dev->board.is_em2800) {
909 /* the em2800 can only scale down to 50% */
910 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
911 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
912 /*
913 * MaxPacketSize for em2800 is too small to capture at full
914 * resolution use half of maxw as the scaler can only scale
915 * to 50%
916 */
917 if (width == maxw && height == maxh)
918 width /= 2;
919 } else {
920 /* width must even because of the YUYV format
921 height must be even because of interlacing */
922 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
923 1, 0);
924 }
925
926 size_to_scale(dev, width, height, &hscale, &vscale);
927 scale_to_size(dev, hscale, hscale, &width, &height);
928
929 f->fmt.pix.width = width;
930 f->fmt.pix.height = height;
931 f->fmt.pix.pixelformat = fmt->fourcc;
932 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
933 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
934 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
935 if (dev->progressive)
936 f->fmt.pix.field = V4L2_FIELD_NONE;
937 else
938 f->fmt.pix.field = dev->interlaced ?
939 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
940
941 return 0;
942 }
943
944 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
945 unsigned width, unsigned height)
946 {
947 struct em28xx_fmt *fmt;
948
949 fmt = format_by_fourcc(fourcc);
950 if (!fmt)
951 return -EINVAL;
952
953 dev->format = fmt;
954 dev->width = width;
955 dev->height = height;
956
957 /* set new image size */
958 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
959
960 em28xx_resolution_set(dev);
961
962 return 0;
963 }
964
965 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
966 struct v4l2_format *f)
967 {
968 struct em28xx *dev = video_drvdata(file);
969
970 if (dev->streaming_users > 0)
971 return -EBUSY;
972
973 vidioc_try_fmt_vid_cap(file, priv, f);
974
975 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
976 f->fmt.pix.width, f->fmt.pix.height);
977 }
978
979 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
980 {
981 struct em28xx_fh *fh = priv;
982 struct em28xx *dev = fh->dev;
983
984 *norm = dev->norm;
985
986 return 0;
987 }
988
989 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
990 {
991 struct em28xx_fh *fh = priv;
992 struct em28xx *dev = fh->dev;
993
994 v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
995
996 return 0;
997 }
998
999 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1000 {
1001 struct em28xx_fh *fh = priv;
1002 struct em28xx *dev = fh->dev;
1003 struct v4l2_format f;
1004
1005 if (*norm == dev->norm)
1006 return 0;
1007
1008 if (dev->streaming_users > 0)
1009 return -EBUSY;
1010
1011 dev->norm = *norm;
1012
1013 /* Adjusts width/height, if needed */
1014 f.fmt.pix.width = 720;
1015 f.fmt.pix.height = (*norm & V4L2_STD_525_60) ? 480 : 576;
1016 vidioc_try_fmt_vid_cap(file, priv, &f);
1017
1018 /* set new image size */
1019 dev->width = f.fmt.pix.width;
1020 dev->height = f.fmt.pix.height;
1021 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1022
1023 em28xx_resolution_set(dev);
1024 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1025
1026 return 0;
1027 }
1028
1029 static int vidioc_g_parm(struct file *file, void *priv,
1030 struct v4l2_streamparm *p)
1031 {
1032 struct em28xx_fh *fh = priv;
1033 struct em28xx *dev = fh->dev;
1034 int rc = 0;
1035
1036 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1037 if (dev->board.is_webcam)
1038 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1039 video, g_parm, p);
1040 else
1041 v4l2_video_std_frame_period(dev->norm,
1042 &p->parm.capture.timeperframe);
1043
1044 return rc;
1045 }
1046
1047 static int vidioc_s_parm(struct file *file, void *priv,
1048 struct v4l2_streamparm *p)
1049 {
1050 struct em28xx_fh *fh = priv;
1051 struct em28xx *dev = fh->dev;
1052
1053 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1054 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1055 }
1056
1057 static const char *iname[] = {
1058 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1059 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1060 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1061 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1062 [EM28XX_VMUX_SVIDEO] = "S-Video",
1063 [EM28XX_VMUX_TELEVISION] = "Television",
1064 [EM28XX_VMUX_CABLE] = "Cable TV",
1065 [EM28XX_VMUX_DVB] = "DVB",
1066 [EM28XX_VMUX_DEBUG] = "for debug only",
1067 };
1068
1069 static int vidioc_enum_input(struct file *file, void *priv,
1070 struct v4l2_input *i)
1071 {
1072 struct em28xx_fh *fh = priv;
1073 struct em28xx *dev = fh->dev;
1074 unsigned int n;
1075
1076 n = i->index;
1077 if (n >= MAX_EM28XX_INPUT)
1078 return -EINVAL;
1079 if (0 == INPUT(n)->type)
1080 return -EINVAL;
1081
1082 i->index = n;
1083 i->type = V4L2_INPUT_TYPE_CAMERA;
1084
1085 strcpy(i->name, iname[INPUT(n)->type]);
1086
1087 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1088 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1089 i->type = V4L2_INPUT_TYPE_TUNER;
1090
1091 i->std = dev->vdev->tvnorms;
1092 /* webcams do not have the STD API */
1093 if (dev->board.is_webcam)
1094 i->capabilities = 0;
1095
1096 return 0;
1097 }
1098
1099 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1100 {
1101 struct em28xx_fh *fh = priv;
1102 struct em28xx *dev = fh->dev;
1103
1104 *i = dev->ctl_input;
1105
1106 return 0;
1107 }
1108
1109 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1110 {
1111 struct em28xx_fh *fh = priv;
1112 struct em28xx *dev = fh->dev;
1113
1114 if (i >= MAX_EM28XX_INPUT)
1115 return -EINVAL;
1116 if (0 == INPUT(i)->type)
1117 return -EINVAL;
1118
1119 video_mux(dev, i);
1120 return 0;
1121 }
1122
1123 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1124 {
1125 struct em28xx_fh *fh = priv;
1126 struct em28xx *dev = fh->dev;
1127
1128 switch (a->index) {
1129 case EM28XX_AMUX_VIDEO:
1130 strcpy(a->name, "Television");
1131 break;
1132 case EM28XX_AMUX_LINE_IN:
1133 strcpy(a->name, "Line In");
1134 break;
1135 case EM28XX_AMUX_VIDEO2:
1136 strcpy(a->name, "Television alt");
1137 break;
1138 case EM28XX_AMUX_PHONE:
1139 strcpy(a->name, "Phone");
1140 break;
1141 case EM28XX_AMUX_MIC:
1142 strcpy(a->name, "Mic");
1143 break;
1144 case EM28XX_AMUX_CD:
1145 strcpy(a->name, "CD");
1146 break;
1147 case EM28XX_AMUX_AUX:
1148 strcpy(a->name, "Aux");
1149 break;
1150 case EM28XX_AMUX_PCM_OUT:
1151 strcpy(a->name, "PCM");
1152 break;
1153 default:
1154 return -EINVAL;
1155 }
1156
1157 a->index = dev->ctl_ainput;
1158 a->capability = V4L2_AUDCAP_STEREO;
1159
1160 return 0;
1161 }
1162
1163 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1164 {
1165 struct em28xx_fh *fh = priv;
1166 struct em28xx *dev = fh->dev;
1167
1168 if (a->index >= MAX_EM28XX_INPUT)
1169 return -EINVAL;
1170 if (0 == INPUT(a->index)->type)
1171 return -EINVAL;
1172
1173 dev->ctl_ainput = INPUT(a->index)->amux;
1174 dev->ctl_aoutput = INPUT(a->index)->aout;
1175
1176 if (!dev->ctl_aoutput)
1177 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1178
1179 return 0;
1180 }
1181
1182 static int vidioc_g_tuner(struct file *file, void *priv,
1183 struct v4l2_tuner *t)
1184 {
1185 struct em28xx_fh *fh = priv;
1186 struct em28xx *dev = fh->dev;
1187
1188 if (0 != t->index)
1189 return -EINVAL;
1190
1191 strcpy(t->name, "Tuner");
1192
1193 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1194 return 0;
1195 }
1196
1197 static int vidioc_s_tuner(struct file *file, void *priv,
1198 struct v4l2_tuner *t)
1199 {
1200 struct em28xx_fh *fh = priv;
1201 struct em28xx *dev = fh->dev;
1202
1203 if (0 != t->index)
1204 return -EINVAL;
1205
1206 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1207 return 0;
1208 }
1209
1210 static int vidioc_g_frequency(struct file *file, void *priv,
1211 struct v4l2_frequency *f)
1212 {
1213 struct em28xx_fh *fh = priv;
1214 struct em28xx *dev = fh->dev;
1215
1216 if (0 != f->tuner)
1217 return -EINVAL;
1218
1219 f->frequency = dev->ctl_freq;
1220 return 0;
1221 }
1222
1223 static int vidioc_s_frequency(struct file *file, void *priv,
1224 const struct v4l2_frequency *f)
1225 {
1226 struct v4l2_frequency new_freq = *f;
1227 struct em28xx_fh *fh = priv;
1228 struct em28xx *dev = fh->dev;
1229
1230 if (0 != f->tuner)
1231 return -EINVAL;
1232
1233 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1234 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1235 dev->ctl_freq = new_freq.frequency;
1236
1237 return 0;
1238 }
1239
1240 static int vidioc_g_chip_ident(struct file *file, void *priv,
1241 struct v4l2_dbg_chip_ident *chip)
1242 {
1243 struct em28xx_fh *fh = priv;
1244 struct em28xx *dev = fh->dev;
1245
1246 chip->ident = V4L2_IDENT_NONE;
1247 chip->revision = 0;
1248 if (chip->match.type == V4L2_CHIP_MATCH_HOST) {
1249 if (v4l2_chip_match_host(&chip->match))
1250 chip->ident = V4L2_IDENT_NONE;
1251 return 0;
1252 }
1253 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1254 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
1255 return -EINVAL;
1256
1257 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1258
1259 return 0;
1260 }
1261
1262 #ifdef CONFIG_VIDEO_ADV_DEBUG
1263 static int em28xx_reg_len(int reg)
1264 {
1265 switch (reg) {
1266 case EM28XX_R40_AC97LSB:
1267 case EM28XX_R30_HSCALELOW:
1268 case EM28XX_R32_VSCALELOW:
1269 return 2;
1270 default:
1271 return 1;
1272 }
1273 }
1274
1275 static int vidioc_g_register(struct file *file, void *priv,
1276 struct v4l2_dbg_register *reg)
1277 {
1278 struct em28xx_fh *fh = priv;
1279 struct em28xx *dev = fh->dev;
1280 int ret;
1281
1282 switch (reg->match.type) {
1283 case V4L2_CHIP_MATCH_AC97:
1284 ret = em28xx_read_ac97(dev, reg->reg);
1285 if (ret < 0)
1286 return ret;
1287
1288 reg->val = ret;
1289 reg->size = 1;
1290 return 0;
1291 case V4L2_CHIP_MATCH_I2C_DRIVER:
1292 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1293 return 0;
1294 case V4L2_CHIP_MATCH_I2C_ADDR:
1295 /* TODO: is this correct? */
1296 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1297 return 0;
1298 default:
1299 if (!v4l2_chip_match_host(&reg->match))
1300 return -EINVAL;
1301 }
1302
1303 /* Match host */
1304 reg->size = em28xx_reg_len(reg->reg);
1305 if (reg->size == 1) {
1306 ret = em28xx_read_reg(dev, reg->reg);
1307
1308 if (ret < 0)
1309 return ret;
1310
1311 reg->val = ret;
1312 } else {
1313 __le16 val = 0;
1314 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1315 reg->reg, (char *)&val, 2);
1316 if (ret < 0)
1317 return ret;
1318
1319 reg->val = le16_to_cpu(val);
1320 }
1321
1322 return 0;
1323 }
1324
1325 static int vidioc_s_register(struct file *file, void *priv,
1326 struct v4l2_dbg_register *reg)
1327 {
1328 struct em28xx_fh *fh = priv;
1329 struct em28xx *dev = fh->dev;
1330 __le16 buf;
1331
1332 switch (reg->match.type) {
1333 case V4L2_CHIP_MATCH_AC97:
1334 return em28xx_write_ac97(dev, reg->reg, reg->val);
1335 case V4L2_CHIP_MATCH_I2C_DRIVER:
1336 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1337 return 0;
1338 case V4L2_CHIP_MATCH_I2C_ADDR:
1339 /* TODO: is this correct? */
1340 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1341 return 0;
1342 default:
1343 if (!v4l2_chip_match_host(&reg->match))
1344 return -EINVAL;
1345 }
1346
1347 /* Match host */
1348 buf = cpu_to_le16(reg->val);
1349
1350 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1351 em28xx_reg_len(reg->reg));
1352 }
1353 #endif
1354
1355
1356 static int vidioc_querycap(struct file *file, void *priv,
1357 struct v4l2_capability *cap)
1358 {
1359 struct video_device *vdev = video_devdata(file);
1360 struct em28xx_fh *fh = priv;
1361 struct em28xx *dev = fh->dev;
1362
1363 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1364 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1365 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1366
1367 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1368 cap->device_caps = V4L2_CAP_READWRITE |
1369 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1370 else if (vdev->vfl_type == VFL_TYPE_RADIO)
1371 cap->device_caps = V4L2_CAP_RADIO;
1372 else
1373 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1374
1375 if (dev->audio_mode.has_audio)
1376 cap->device_caps |= V4L2_CAP_AUDIO;
1377
1378 if (dev->tuner_type != TUNER_ABSENT)
1379 cap->device_caps |= V4L2_CAP_TUNER;
1380
1381 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1382 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1383 if (dev->vbi_dev)
1384 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1385 if (dev->radio_dev)
1386 cap->capabilities |= V4L2_CAP_RADIO;
1387 return 0;
1388 }
1389
1390 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1391 struct v4l2_fmtdesc *f)
1392 {
1393 if (unlikely(f->index >= ARRAY_SIZE(format)))
1394 return -EINVAL;
1395
1396 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1397 f->pixelformat = format[f->index].fourcc;
1398
1399 return 0;
1400 }
1401
1402 static int vidioc_enum_framesizes(struct file *file, void *priv,
1403 struct v4l2_frmsizeenum *fsize)
1404 {
1405 struct em28xx_fh *fh = priv;
1406 struct em28xx *dev = fh->dev;
1407 struct em28xx_fmt *fmt;
1408 unsigned int maxw = norm_maxw(dev);
1409 unsigned int maxh = norm_maxh(dev);
1410
1411 fmt = format_by_fourcc(fsize->pixel_format);
1412 if (!fmt) {
1413 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1414 fsize->pixel_format);
1415 return -EINVAL;
1416 }
1417
1418 if (dev->board.is_em2800) {
1419 if (fsize->index > 1)
1420 return -EINVAL;
1421 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1422 fsize->discrete.width = maxw / (1 + fsize->index);
1423 fsize->discrete.height = maxh / (1 + fsize->index);
1424 return 0;
1425 }
1426
1427 if (fsize->index != 0)
1428 return -EINVAL;
1429
1430 /* Report a continuous range */
1431 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1432 scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1433 &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1434 if (fsize->stepwise.min_width < 48)
1435 fsize->stepwise.min_width = 48;
1436 if (fsize->stepwise.min_height < 38)
1437 fsize->stepwise.min_height = 38;
1438 fsize->stepwise.max_width = maxw;
1439 fsize->stepwise.max_height = maxh;
1440 fsize->stepwise.step_width = 1;
1441 fsize->stepwise.step_height = 1;
1442 return 0;
1443 }
1444
1445 /* RAW VBI ioctls */
1446
1447 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1448 struct v4l2_format *format)
1449 {
1450 struct em28xx_fh *fh = priv;
1451 struct em28xx *dev = fh->dev;
1452
1453 format->fmt.vbi.samples_per_line = dev->vbi_width;
1454 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1455 format->fmt.vbi.offset = 0;
1456 format->fmt.vbi.flags = 0;
1457 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1458 format->fmt.vbi.count[0] = dev->vbi_height;
1459 format->fmt.vbi.count[1] = dev->vbi_height;
1460 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1461
1462 /* Varies by video standard (NTSC, PAL, etc.) */
1463 if (dev->norm & V4L2_STD_525_60) {
1464 /* NTSC */
1465 format->fmt.vbi.start[0] = 10;
1466 format->fmt.vbi.start[1] = 273;
1467 } else if (dev->norm & V4L2_STD_625_50) {
1468 /* PAL */
1469 format->fmt.vbi.start[0] = 6;
1470 format->fmt.vbi.start[1] = 318;
1471 }
1472
1473 return 0;
1474 }
1475
1476 /* ----------------------------------------------------------- */
1477 /* RADIO ESPECIFIC IOCTLS */
1478 /* ----------------------------------------------------------- */
1479
1480 static int radio_g_tuner(struct file *file, void *priv,
1481 struct v4l2_tuner *t)
1482 {
1483 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1484
1485 if (unlikely(t->index > 0))
1486 return -EINVAL;
1487
1488 strcpy(t->name, "Radio");
1489
1490 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1491
1492 return 0;
1493 }
1494
1495 static int radio_s_tuner(struct file *file, void *priv,
1496 struct v4l2_tuner *t)
1497 {
1498 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1499
1500 if (0 != t->index)
1501 return -EINVAL;
1502
1503 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1504
1505 return 0;
1506 }
1507
1508 /*
1509 * em28xx_v4l2_open()
1510 * inits the device and starts isoc transfer
1511 */
1512 static int em28xx_v4l2_open(struct file *filp)
1513 {
1514 struct video_device *vdev = video_devdata(filp);
1515 struct em28xx *dev = video_drvdata(filp);
1516 enum v4l2_buf_type fh_type = 0;
1517 struct em28xx_fh *fh;
1518
1519 switch (vdev->vfl_type) {
1520 case VFL_TYPE_GRABBER:
1521 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1522 break;
1523 case VFL_TYPE_VBI:
1524 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1525 break;
1526 }
1527
1528 em28xx_videodbg("open dev=%s type=%s users=%d\n",
1529 video_device_node_name(vdev), v4l2_type_names[fh_type],
1530 dev->users);
1531
1532
1533 if (mutex_lock_interruptible(&dev->lock))
1534 return -ERESTARTSYS;
1535 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1536 if (!fh) {
1537 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1538 mutex_unlock(&dev->lock);
1539 return -ENOMEM;
1540 }
1541 v4l2_fh_init(&fh->fh, vdev);
1542 fh->dev = dev;
1543 fh->type = fh_type;
1544 filp->private_data = fh;
1545
1546 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1547 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1548 em28xx_resolution_set(dev);
1549
1550 /* Needed, since GPIO might have disabled power of
1551 some i2c device
1552 */
1553 em28xx_wake_i2c(dev);
1554
1555 }
1556
1557 if (vdev->vfl_type == VFL_TYPE_RADIO) {
1558 em28xx_videodbg("video_open: setting radio device\n");
1559 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1560 }
1561
1562 dev->users++;
1563
1564 mutex_unlock(&dev->lock);
1565 v4l2_fh_add(&fh->fh);
1566
1567 return 0;
1568 }
1569
1570 /*
1571 * em28xx_realease_resources()
1572 * unregisters the v4l2,i2c and usb devices
1573 * called when the device gets disconected or at module unload
1574 */
1575 void em28xx_release_analog_resources(struct em28xx *dev)
1576 {
1577
1578 /*FIXME: I2C IR should be disconnected */
1579
1580 if (dev->radio_dev) {
1581 if (video_is_registered(dev->radio_dev))
1582 video_unregister_device(dev->radio_dev);
1583 else
1584 video_device_release(dev->radio_dev);
1585 dev->radio_dev = NULL;
1586 }
1587 if (dev->vbi_dev) {
1588 em28xx_info("V4L2 device %s deregistered\n",
1589 video_device_node_name(dev->vbi_dev));
1590 if (video_is_registered(dev->vbi_dev))
1591 video_unregister_device(dev->vbi_dev);
1592 else
1593 video_device_release(dev->vbi_dev);
1594 dev->vbi_dev = NULL;
1595 }
1596 if (dev->vdev) {
1597 em28xx_info("V4L2 device %s deregistered\n",
1598 video_device_node_name(dev->vdev));
1599 if (video_is_registered(dev->vdev))
1600 video_unregister_device(dev->vdev);
1601 else
1602 video_device_release(dev->vdev);
1603 dev->vdev = NULL;
1604 }
1605 }
1606
1607 /*
1608 * em28xx_v4l2_close()
1609 * stops streaming and deallocates all resources allocated by the v4l2
1610 * calls and ioctls
1611 */
1612 static int em28xx_v4l2_close(struct file *filp)
1613 {
1614 struct em28xx_fh *fh = filp->private_data;
1615 struct em28xx *dev = fh->dev;
1616 int errCode;
1617
1618 em28xx_videodbg("users=%d\n", dev->users);
1619
1620 mutex_lock(&dev->lock);
1621 vb2_fop_release(filp);
1622
1623 if (dev->users == 1) {
1624 /* the device is already disconnect,
1625 free the remaining resources */
1626 if (dev->disconnected) {
1627 em28xx_release_resources(dev);
1628 kfree(dev->alt_max_pkt_size_isoc);
1629 mutex_unlock(&dev->lock);
1630 kfree(dev);
1631 return 0;
1632 }
1633
1634 /* Save some power by putting tuner to sleep */
1635 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1636
1637 /* do this before setting alternate! */
1638 em28xx_set_mode(dev, EM28XX_SUSPEND);
1639
1640 /* set alternate 0 */
1641 dev->alt = 0;
1642 em28xx_videodbg("setting alternate 0\n");
1643 errCode = usb_set_interface(dev->udev, 0, 0);
1644 if (errCode < 0) {
1645 em28xx_errdev("cannot change alternate number to "
1646 "0 (error=%i)\n", errCode);
1647 }
1648 }
1649
1650 dev->users--;
1651 mutex_unlock(&dev->lock);
1652 return 0;
1653 }
1654
1655 static const struct v4l2_file_operations em28xx_v4l_fops = {
1656 .owner = THIS_MODULE,
1657 .open = em28xx_v4l2_open,
1658 .release = em28xx_v4l2_close,
1659 .read = vb2_fop_read,
1660 .poll = vb2_fop_poll,
1661 .mmap = vb2_fop_mmap,
1662 .unlocked_ioctl = video_ioctl2,
1663 };
1664
1665 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1666 .vidioc_querycap = vidioc_querycap,
1667 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1668 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1669 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1670 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1671 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1672 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1673 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1674 .vidioc_enum_framesizes = vidioc_enum_framesizes,
1675 .vidioc_g_audio = vidioc_g_audio,
1676 .vidioc_s_audio = vidioc_s_audio,
1677
1678 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1679 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1680 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1681 .vidioc_querybuf = vb2_ioctl_querybuf,
1682 .vidioc_qbuf = vb2_ioctl_qbuf,
1683 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1684
1685 .vidioc_g_std = vidioc_g_std,
1686 .vidioc_querystd = vidioc_querystd,
1687 .vidioc_s_std = vidioc_s_std,
1688 .vidioc_g_parm = vidioc_g_parm,
1689 .vidioc_s_parm = vidioc_s_parm,
1690 .vidioc_enum_input = vidioc_enum_input,
1691 .vidioc_g_input = vidioc_g_input,
1692 .vidioc_s_input = vidioc_s_input,
1693 .vidioc_streamon = vb2_ioctl_streamon,
1694 .vidioc_streamoff = vb2_ioctl_streamoff,
1695 .vidioc_g_tuner = vidioc_g_tuner,
1696 .vidioc_s_tuner = vidioc_s_tuner,
1697 .vidioc_g_frequency = vidioc_g_frequency,
1698 .vidioc_s_frequency = vidioc_s_frequency,
1699 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1700 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1701 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1702 #ifdef CONFIG_VIDEO_ADV_DEBUG
1703 .vidioc_g_register = vidioc_g_register,
1704 .vidioc_s_register = vidioc_s_register,
1705 #endif
1706 };
1707
1708 static const struct video_device em28xx_video_template = {
1709 .fops = &em28xx_v4l_fops,
1710 .release = video_device_release_empty,
1711 .ioctl_ops = &video_ioctl_ops,
1712
1713 .tvnorms = V4L2_STD_ALL,
1714 };
1715
1716 static const struct v4l2_file_operations radio_fops = {
1717 .owner = THIS_MODULE,
1718 .open = em28xx_v4l2_open,
1719 .release = em28xx_v4l2_close,
1720 .unlocked_ioctl = video_ioctl2,
1721 };
1722
1723 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1724 .vidioc_querycap = vidioc_querycap,
1725 .vidioc_g_tuner = radio_g_tuner,
1726 .vidioc_s_tuner = radio_s_tuner,
1727 .vidioc_g_frequency = vidioc_g_frequency,
1728 .vidioc_s_frequency = vidioc_s_frequency,
1729 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1730 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1731 .vidioc_g_chip_ident = vidioc_g_chip_ident,
1732 #ifdef CONFIG_VIDEO_ADV_DEBUG
1733 .vidioc_g_register = vidioc_g_register,
1734 .vidioc_s_register = vidioc_s_register,
1735 #endif
1736 };
1737
1738 static struct video_device em28xx_radio_template = {
1739 .name = "em28xx-radio",
1740 .fops = &radio_fops,
1741 .ioctl_ops = &radio_ioctl_ops,
1742 };
1743
1744 /******************************** usb interface ******************************/
1745
1746
1747
1748 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1749 const struct video_device *template,
1750 const char *type_name)
1751 {
1752 struct video_device *vfd;
1753
1754 vfd = video_device_alloc();
1755 if (NULL == vfd)
1756 return NULL;
1757
1758 *vfd = *template;
1759 vfd->v4l2_dev = &dev->v4l2_dev;
1760 vfd->debug = video_debug;
1761 vfd->lock = &dev->lock;
1762 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1763 if (dev->board.is_webcam)
1764 vfd->tvnorms = 0;
1765
1766 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1767 dev->name, type_name);
1768
1769 video_set_drvdata(vfd, dev);
1770 return vfd;
1771 }
1772
1773 int em28xx_register_analog_devices(struct em28xx *dev)
1774 {
1775 u8 val;
1776 int ret;
1777 unsigned int maxw;
1778
1779 printk(KERN_INFO "%s: v4l2 driver version %s\n",
1780 dev->name, EM28XX_VERSION);
1781
1782 /* set default norm */
1783 dev->norm = V4L2_STD_PAL;
1784 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1785 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1786
1787 /* Analog specific initialization */
1788 dev->format = &format[0];
1789
1790 maxw = norm_maxw(dev);
1791 /* MaxPacketSize for em2800 is too small to capture at full resolution
1792 * use half of maxw as the scaler can only scale to 50% */
1793 if (dev->board.is_em2800)
1794 maxw /= 2;
1795
1796 em28xx_set_video_format(dev, format[0].fourcc,
1797 maxw, norm_maxh(dev));
1798
1799 video_mux(dev, 0);
1800
1801 /* Audio defaults */
1802 dev->mute = 1;
1803 dev->volume = 0x1f;
1804
1805 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1806 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1807 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1808 (EM28XX_XCLK_AUDIO_UNMUTE | val));
1809
1810 em28xx_set_outfmt(dev);
1811 em28xx_compression_disable(dev);
1812
1813 /* Add image controls */
1814 /* NOTE: at this point, the subdevices are already registered, so bridge
1815 * controls are only added/enabled when no subdevice provides them */
1816 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1817 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1818 V4L2_CID_CONTRAST,
1819 0, 0x1f, 1, CONTRAST_DEFAULT);
1820 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1821 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1822 V4L2_CID_BRIGHTNESS,
1823 -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1824 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1825 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1826 V4L2_CID_SATURATION,
1827 0, 0x1f, 1, SATURATION_DEFAULT);
1828 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1829 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1830 V4L2_CID_BLUE_BALANCE,
1831 -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1832 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1833 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1834 V4L2_CID_RED_BALANCE,
1835 -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1836 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1837 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1838 V4L2_CID_SHARPNESS,
1839 0, 0x0f, 1, SHARPNESS_DEFAULT);
1840
1841 /* Reset image controls */
1842 em28xx_colorlevels_set_default(dev);
1843 v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1844 if (dev->ctrl_handler.error)
1845 return dev->ctrl_handler.error;
1846
1847 /* allocate and fill video video_device struct */
1848 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1849 if (!dev->vdev) {
1850 em28xx_errdev("cannot allocate video_device.\n");
1851 return -ENODEV;
1852 }
1853 dev->vdev->queue = &dev->vb_vidq;
1854 dev->vdev->queue->lock = &dev->vb_queue_lock;
1855
1856 /* disable inapplicable ioctls */
1857 if (dev->board.is_webcam) {
1858 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1859 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1860 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1861 } else {
1862 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1863 }
1864 if (dev->tuner_type == TUNER_ABSENT) {
1865 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1866 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1867 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1868 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1869 }
1870 if (!dev->audio_mode.has_audio) {
1871 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1872 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1873 }
1874
1875 /* register v4l2 video video_device */
1876 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1877 video_nr[dev->devno]);
1878 if (ret) {
1879 em28xx_errdev("unable to register video device (error=%i).\n",
1880 ret);
1881 return ret;
1882 }
1883
1884 /* Allocate and fill vbi video_device struct */
1885 if (em28xx_vbi_supported(dev) == 1) {
1886 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1887 "vbi");
1888
1889 dev->vbi_dev->queue = &dev->vb_vbiq;
1890 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1891
1892 /* disable inapplicable ioctls */
1893 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1894 if (dev->tuner_type == TUNER_ABSENT) {
1895 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1896 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1897 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1898 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1899 }
1900 if (!dev->audio_mode.has_audio) {
1901 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
1902 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
1903 }
1904
1905 /* register v4l2 vbi video_device */
1906 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1907 vbi_nr[dev->devno]);
1908 if (ret < 0) {
1909 em28xx_errdev("unable to register vbi device\n");
1910 return ret;
1911 }
1912 }
1913
1914 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
1915 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
1916 "radio");
1917 if (!dev->radio_dev) {
1918 em28xx_errdev("cannot allocate video_device.\n");
1919 return -ENODEV;
1920 }
1921 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1922 radio_nr[dev->devno]);
1923 if (ret < 0) {
1924 em28xx_errdev("can't register radio device\n");
1925 return ret;
1926 }
1927 em28xx_info("Registered radio device as %s\n",
1928 video_device_node_name(dev->radio_dev));
1929 }
1930
1931 em28xx_info("V4L2 video device registered as %s\n",
1932 video_device_node_name(dev->vdev));
1933
1934 if (dev->vbi_dev)
1935 em28xx_info("V4L2 VBI device registered as %s\n",
1936 video_device_node_name(dev->vbi_dev));
1937
1938 return 0;
1939 }
Linux kernel - Deliverables
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