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Linux 3.11-rc3
[cris-mirror.git] / drivers / media / usb / em28xx / em28xx-video.c
blob1a577ed8ea0ca0163e9203e9db0a143ccd65a743
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/msp3400.h>
45 #include <media/tuner.h>
46
47 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
48 "Markus Rechberger <mrechberger@gmail.com>, " \
49 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
50 "Sascha Sommer <saschasommer@freenet.de>"
51
52 #define DRIVER_DESC "Empia em28xx based USB video device driver"
53
54 #define EM28XX_VERSION "0.2.0"
55
56 #define em28xx_videodbg(fmt, arg...) do {\
57 if (video_debug) \
58 printk(KERN_INFO "%s %s :"fmt, \
59 dev->name, __func__ , ##arg); } while (0)
60
61 static unsigned int isoc_debug;
62 module_param(isoc_debug, int, 0644);
63 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
64
65 #define em28xx_isocdbg(fmt, arg...) \
66 do {\
67 if (isoc_debug) { \
68 printk(KERN_INFO "%s %s :"fmt, \
69 dev->name, __func__ , ##arg); \
70 } \
71 } while (0)
72
73 MODULE_AUTHOR(DRIVER_AUTHOR);
74 MODULE_DESCRIPTION(DRIVER_DESC);
75 MODULE_LICENSE("GPL");
76 MODULE_VERSION(EM28XX_VERSION);
77
78
79 #define EM25XX_FRMDATAHDR_BYTE1 0x02
80 #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE 0x20
81 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END 0x02
82 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID 0x01
83 #define EM25XX_FRMDATAHDR_BYTE2_MASK (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \
84 EM25XX_FRMDATAHDR_BYTE2_FRAME_END | \
85 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID)
86
87
88 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
89 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
90 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
91
92 module_param_array(video_nr, int, NULL, 0444);
93 module_param_array(vbi_nr, int, NULL, 0444);
94 module_param_array(radio_nr, int, NULL, 0444);
95 MODULE_PARM_DESC(video_nr, "video device numbers");
96 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
97 MODULE_PARM_DESC(radio_nr, "radio device numbers");
98
99 static unsigned int video_debug;
100 module_param(video_debug, int, 0644);
101 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
102
103 /* supported video standards */
104 static struct em28xx_fmt format[] = {
105 {
106 .name = "16 bpp YUY2, 4:2:2, packed",
107 .fourcc = V4L2_PIX_FMT_YUYV,
108 .depth = 16,
109 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
110 }, {
111 .name = "16 bpp RGB 565, LE",
112 .fourcc = V4L2_PIX_FMT_RGB565,
113 .depth = 16,
114 .reg = EM28XX_OUTFMT_RGB_16_656,
115 }, {
116 .name = "8 bpp Bayer BGBG..GRGR",
117 .fourcc = V4L2_PIX_FMT_SBGGR8,
118 .depth = 8,
119 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
120 }, {
121 .name = "8 bpp Bayer GRGR..BGBG",
122 .fourcc = V4L2_PIX_FMT_SGRBG8,
123 .depth = 8,
124 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
125 }, {
126 .name = "8 bpp Bayer GBGB..RGRG",
127 .fourcc = V4L2_PIX_FMT_SGBRG8,
128 .depth = 8,
129 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
130 }, {
131 .name = "12 bpp YUV411",
132 .fourcc = V4L2_PIX_FMT_YUV411P,
133 .depth = 12,
134 .reg = EM28XX_OUTFMT_YUV411,
135 },
136 };
137
138 /* ------------------------------------------------------------------
139 DMA and thread functions
140 ------------------------------------------------------------------*/
141
142 /*
143 * Finish the current buffer
144 */
145 static inline void finish_buffer(struct em28xx *dev,
146 struct em28xx_buffer *buf)
147 {
148 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
149
150 buf->vb.v4l2_buf.sequence = dev->field_count++;
151 buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
152 v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
153
154 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
155 }
156
157 /*
158 * Copy picture data from USB buffer to videobuf buffer
159 */
160 static void em28xx_copy_video(struct em28xx *dev,
161 struct em28xx_buffer *buf,
162 unsigned char *usb_buf,
163 unsigned long len)
164 {
165 void *fieldstart, *startwrite, *startread;
166 int linesdone, currlinedone, offset, lencopy, remain;
167 int bytesperline = dev->width << 1;
168
169 if (buf->pos + len > buf->length)
170 len = buf->length - buf->pos;
171
172 startread = usb_buf;
173 remain = len;
174
175 if (dev->progressive || buf->top_field)
176 fieldstart = buf->vb_buf;
177 else /* interlaced mode, even nr. of lines */
178 fieldstart = buf->vb_buf + bytesperline;
179
180 linesdone = buf->pos / bytesperline;
181 currlinedone = buf->pos % bytesperline;
182
183 if (dev->progressive)
184 offset = linesdone * bytesperline + currlinedone;
185 else
186 offset = linesdone * bytesperline * 2 + currlinedone;
187
188 startwrite = fieldstart + offset;
189 lencopy = bytesperline - currlinedone;
190 lencopy = lencopy > remain ? remain : lencopy;
191
192 if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
193 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
194 ((char *)startwrite + lencopy) -
195 ((char *)buf->vb_buf + buf->length));
196 remain = (char *)buf->vb_buf + buf->length -
197 (char *)startwrite;
198 lencopy = remain;
199 }
200 if (lencopy <= 0)
201 return;
202 memcpy(startwrite, startread, lencopy);
203
204 remain -= lencopy;
205
206 while (remain > 0) {
207 if (dev->progressive)
208 startwrite += lencopy;
209 else
210 startwrite += lencopy + bytesperline;
211 startread += lencopy;
212 if (bytesperline > remain)
213 lencopy = remain;
214 else
215 lencopy = bytesperline;
216
217 if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
218 buf->length) {
219 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
220 "(2)\n",
221 ((char *)startwrite + lencopy) -
222 ((char *)buf->vb_buf + buf->length));
223 lencopy = remain = (char *)buf->vb_buf + buf->length -
224 (char *)startwrite;
225 }
226 if (lencopy <= 0)
227 break;
228
229 memcpy(startwrite, startread, lencopy);
230
231 remain -= lencopy;
232 }
233
234 buf->pos += len;
235 }
236
237 /*
238 * Copy VBI data from USB buffer to videobuf buffer
239 */
240 static void em28xx_copy_vbi(struct em28xx *dev,
241 struct em28xx_buffer *buf,
242 unsigned char *usb_buf,
243 unsigned long len)
244 {
245 unsigned int offset;
246
247 if (buf->pos + len > buf->length)
248 len = buf->length - buf->pos;
249
250 offset = buf->pos;
251 /* Make sure the bottom field populates the second half of the frame */
252 if (buf->top_field == 0)
253 offset += dev->vbi_width * dev->vbi_height;
254
255 memcpy(buf->vb_buf + offset, usb_buf, len);
256 buf->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 * get the next available buffer from dma queue
300 */
301 static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
302 struct em28xx_dmaqueue *dma_q)
303 {
304 struct em28xx_buffer *buf;
305
306 if (list_empty(&dma_q->active)) {
307 em28xx_isocdbg("No active queue to serve\n");
308 return NULL;
309 }
310
311 /* Get the next buffer */
312 buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
313 /* Cleans up buffer - Useful for testing for frame/URB loss */
314 list_del(&buf->list);
315 buf->pos = 0;
316 buf->vb_buf = buf->mem;
317
318 return buf;
319 }
320
321 /*
322 * Finish the current buffer if completed and prepare for the next field
323 */
324 static struct em28xx_buffer *
325 finish_field_prepare_next(struct em28xx *dev,
326 struct em28xx_buffer *buf,
327 struct em28xx_dmaqueue *dma_q)
328 {
329 if (dev->progressive || dev->top_field) { /* Brand new frame */
330 if (buf != NULL)
331 finish_buffer(dev, buf);
332 buf = get_next_buf(dev, dma_q);
333 }
334 if (buf != NULL) {
335 buf->top_field = dev->top_field;
336 buf->pos = 0;
337 }
338
339 return buf;
340 }
341
342 /*
343 * Process data packet according to the em2710/em2750/em28xx frame data format
344 */
345 static inline void process_frame_data_em28xx(struct em28xx *dev,
346 unsigned char *data_pkt,
347 unsigned int data_len)
348 {
349 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
350 struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf;
351 struct em28xx_dmaqueue *dma_q = &dev->vidq;
352 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
353
354 /* capture type 0 = vbi start
355 capture type 1 = vbi in progress
356 capture type 2 = video start
357 capture type 3 = video in progress */
358 if (data_len >= 4) {
359 /* NOTE: Headers are always 4 bytes and
360 * never split across packets */
361 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
362 data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
363 /* Continuation */
364 data_pkt += 4;
365 data_len -= 4;
366 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
367 /* Field start (VBI mode) */
368 dev->capture_type = 0;
369 dev->vbi_read = 0;
370 em28xx_isocdbg("VBI START HEADER !!!\n");
371 dev->top_field = !(data_pkt[2] & 1);
372 data_pkt += 4;
373 data_len -= 4;
374 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
375 /* Field start (VBI disabled) */
376 dev->capture_type = 2;
377 em28xx_isocdbg("VIDEO START HEADER !!!\n");
378 dev->top_field = !(data_pkt[2] & 1);
379 data_pkt += 4;
380 data_len -= 4;
381 }
382 }
383 /* NOTE: With bulk transfers, intermediate data packets
384 * have no continuation header */
385
386 if (dev->capture_type == 0) {
387 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
388 dev->usb_ctl.vbi_buf = vbi_buf;
389 dev->capture_type = 1;
390 }
391
392 if (dev->capture_type == 1) {
393 int vbi_size = dev->vbi_width * dev->vbi_height;
394 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
395 (vbi_size - dev->vbi_read) : data_len;
396
397 /* Copy VBI data */
398 if (vbi_buf != NULL)
399 em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
400 dev->vbi_read += vbi_data_len;
401
402 if (vbi_data_len < data_len) {
403 /* Continue with copying video data */
404 dev->capture_type = 2;
405 data_pkt += vbi_data_len;
406 data_len -= vbi_data_len;
407 }
408 }
409
410 if (dev->capture_type == 2) {
411 buf = finish_field_prepare_next(dev, buf, dma_q);
412 dev->usb_ctl.vid_buf = buf;
413 dev->capture_type = 3;
414 }
415
416 if (dev->capture_type == 3 && buf != NULL && data_len > 0)
417 em28xx_copy_video(dev, buf, data_pkt, data_len);
418 }
419
420 /*
421 * Process data packet according to the em25xx/em276x/7x/8x frame data format
422 */
423 static inline void process_frame_data_em25xx(struct em28xx *dev,
424 unsigned char *data_pkt,
425 unsigned int data_len)
426 {
427 struct em28xx_buffer *buf = dev->usb_ctl.vid_buf;
428 struct em28xx_dmaqueue *dmaq = &dev->vidq;
429 bool frame_end = 0;
430
431 /* Check for header */
432 /* NOTE: at least with bulk transfers, only the first packet
433 * has a header and has always set the FRAME_END bit */
434 if (data_len >= 2) { /* em25xx header is only 2 bytes long */
435 if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
436 ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
437 dev->top_field = !(data_pkt[1] &
438 EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
439 frame_end = data_pkt[1] &
440 EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
441 data_pkt += 2;
442 data_len -= 2;
443 }
444
445 /* Finish field and prepare next (BULK only) */
446 if (dev->analog_xfer_bulk && frame_end) {
447 buf = finish_field_prepare_next(dev, buf, dmaq);
448 dev->usb_ctl.vid_buf = buf;
449 }
450 /* NOTE: in ISOC mode when a new frame starts and buf==NULL,
451 * we COULD already prepare a buffer here to avoid skipping the
452 * first frame.
453 */
454 }
455
456 /* Copy data */
457 if (buf != NULL && data_len > 0)
458 em28xx_copy_video(dev, buf, data_pkt, data_len);
459
460 /* Finish frame (ISOC only) => avoids lag of 1 frame */
461 if (!dev->analog_xfer_bulk && frame_end) {
462 buf = finish_field_prepare_next(dev, buf, dmaq);
463 dev->usb_ctl.vid_buf = buf;
464 }
465
466 /* NOTE: Tested with USB bulk transfers only !
467 * The wording in the datasheet suggests that isoc might work different.
468 * The current code assumes that with isoc transfers each packet has a
469 * header like with the other em28xx devices.
470 */
471 /* NOTE: Support for interlaced mode is pure theory. It has not been
472 * tested and it is unknown if these devices actually support it. */
473 /* NOTE: No VBI support yet (these chips likely do not support VBI). */
474 }
475
476 /* Processes and copies the URB data content (video and VBI data) */
477 static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
478 {
479 int xfer_bulk, num_packets, i;
480 unsigned char *usb_data_pkt;
481 unsigned int usb_data_len;
482
483 if (!dev)
484 return 0;
485
486 if (dev->disconnected)
487 return 0;
488
489 if (urb->status < 0)
490 print_err_status(dev, -1, urb->status);
491
492 xfer_bulk = usb_pipebulk(urb->pipe);
493
494 if (xfer_bulk) /* bulk */
495 num_packets = 1;
496 else /* isoc */
497 num_packets = urb->number_of_packets;
498
499 for (i = 0; i < num_packets; i++) {
500 if (xfer_bulk) { /* bulk */
501 usb_data_len = urb->actual_length;
502
503 usb_data_pkt = urb->transfer_buffer;
504 } else { /* isoc */
505 if (urb->iso_frame_desc[i].status < 0) {
506 print_err_status(dev, i,
507 urb->iso_frame_desc[i].status);
508 if (urb->iso_frame_desc[i].status != -EPROTO)
509 continue;
510 }
511
512 usb_data_len = urb->iso_frame_desc[i].actual_length;
513 if (usb_data_len > dev->max_pkt_size) {
514 em28xx_isocdbg("packet bigger than packet size");
515 continue;
516 }
517
518 usb_data_pkt = urb->transfer_buffer +
519 urb->iso_frame_desc[i].offset;
520 }
521
522 if (usb_data_len == 0) {
523 /* NOTE: happens very often with isoc transfers */
524 /* em28xx_usbdbg("packet %d is empty",i); - spammy */
525 continue;
526 }
527
528 if (dev->is_em25xx)
529 process_frame_data_em25xx(dev,
530 usb_data_pkt, usb_data_len);
531 else
532 process_frame_data_em28xx(dev,
533 usb_data_pkt, usb_data_len);
534
535 }
536 return 1;
537 }
538
539
540 static int get_ressource(enum v4l2_buf_type f_type)
541 {
542 switch (f_type) {
543 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
544 return EM28XX_RESOURCE_VIDEO;
545 case V4L2_BUF_TYPE_VBI_CAPTURE:
546 return EM28XX_RESOURCE_VBI;
547 default:
548 BUG();
549 return 0;
550 }
551 }
552
553 /* Usage lock check functions */
554 static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
555 {
556 int res_type = get_ressource(f_type);
557
558 /* is it free? */
559 if (dev->resources & res_type) {
560 /* no, someone else uses it */
561 return -EBUSY;
562 }
563
564 /* it's free, grab it */
565 dev->resources |= res_type;
566 em28xx_videodbg("res: get %d\n", res_type);
567 return 0;
568 }
569
570 static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
571 {
572 int res_type = get_ressource(f_type);
573
574 dev->resources &= ~res_type;
575 em28xx_videodbg("res: put %d\n", res_type);
576 }
577
578 /* ------------------------------------------------------------------
579 Videobuf2 operations
580 ------------------------------------------------------------------*/
581
582 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
583 unsigned int *nbuffers, unsigned int *nplanes,
584 unsigned int sizes[], void *alloc_ctxs[])
585 {
586 struct em28xx *dev = vb2_get_drv_priv(vq);
587 unsigned long size;
588
589 if (fmt)
590 size = fmt->fmt.pix.sizeimage;
591 else
592 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
593
594 if (size == 0)
595 return -EINVAL;
596
597 if (0 == *nbuffers)
598 *nbuffers = 32;
599
600 *nplanes = 1;
601 sizes[0] = size;
602
603 return 0;
604 }
605
606 static int
607 buffer_prepare(struct vb2_buffer *vb)
608 {
609 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
610 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
611 unsigned long size;
612
613 em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
614
615 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
616
617 if (vb2_plane_size(vb, 0) < size) {
618 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
619 __func__, vb2_plane_size(vb, 0), size);
620 return -EINVAL;
621 }
622 vb2_set_plane_payload(&buf->vb, 0, size);
623
624 return 0;
625 }
626
627 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
628 {
629 struct em28xx *dev = vb2_get_drv_priv(vq);
630 struct v4l2_frequency f;
631 int rc = 0;
632
633 em28xx_videodbg("%s\n", __func__);
634
635 /* Make sure streaming is not already in progress for this type
636 of filehandle (e.g. video, vbi) */
637 rc = res_get(dev, vq->type);
638 if (rc)
639 return rc;
640
641 if (dev->streaming_users++ == 0) {
642 /* First active streaming user, so allocate all the URBs */
643
644 /* Allocate the USB bandwidth */
645 em28xx_set_alternate(dev);
646
647 /* Needed, since GPIO might have disabled power of
648 some i2c device
649 */
650 em28xx_wake_i2c(dev);
651
652 dev->capture_type = -1;
653 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
654 dev->analog_xfer_bulk,
655 EM28XX_NUM_BUFS,
656 dev->max_pkt_size,
657 dev->packet_multiplier,
658 em28xx_urb_data_copy);
659 if (rc < 0)
660 goto fail;
661
662 /*
663 * djh: it's not clear whether this code is still needed. I'm
664 * leaving it in here for now entirely out of concern for
665 * backward compatibility (the old code did it)
666 */
667
668 /* Ask tuner to go to analog or radio mode */
669 memset(&f, 0, sizeof(f));
670 f.frequency = dev->ctl_freq;
671 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
672 f.type = V4L2_TUNER_RADIO;
673 else
674 f.type = V4L2_TUNER_ANALOG_TV;
675 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
676 }
677
678 fail:
679 return rc;
680 }
681
682 static int em28xx_stop_streaming(struct vb2_queue *vq)
683 {
684 struct em28xx *dev = vb2_get_drv_priv(vq);
685 struct em28xx_dmaqueue *vidq = &dev->vidq;
686 unsigned long flags = 0;
687
688 em28xx_videodbg("%s\n", __func__);
689
690 res_free(dev, vq->type);
691
692 if (dev->streaming_users-- == 1) {
693 /* Last active user, so shutdown all the URBS */
694 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
695 }
696
697 spin_lock_irqsave(&dev->slock, flags);
698 while (!list_empty(&vidq->active)) {
699 struct em28xx_buffer *buf;
700 buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
701 list_del(&buf->list);
702 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
703 }
704 dev->usb_ctl.vid_buf = NULL;
705 spin_unlock_irqrestore(&dev->slock, flags);
706
707 return 0;
708 }
709
710 int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
711 {
712 struct em28xx *dev = vb2_get_drv_priv(vq);
713 struct em28xx_dmaqueue *vbiq = &dev->vbiq;
714 unsigned long flags = 0;
715
716 em28xx_videodbg("%s\n", __func__);
717
718 res_free(dev, vq->type);
719
720 if (dev->streaming_users-- == 1) {
721 /* Last active user, so shutdown all the URBS */
722 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
723 }
724
725 spin_lock_irqsave(&dev->slock, flags);
726 while (!list_empty(&vbiq->active)) {
727 struct em28xx_buffer *buf;
728 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
729 list_del(&buf->list);
730 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
731 }
732 dev->usb_ctl.vbi_buf = NULL;
733 spin_unlock_irqrestore(&dev->slock, flags);
734
735 return 0;
736 }
737
738 static void
739 buffer_queue(struct vb2_buffer *vb)
740 {
741 struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
742 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
743 struct em28xx_dmaqueue *vidq = &dev->vidq;
744 unsigned long flags = 0;
745
746 em28xx_videodbg("%s\n", __func__);
747 buf->mem = vb2_plane_vaddr(vb, 0);
748 buf->length = vb2_plane_size(vb, 0);
749
750 spin_lock_irqsave(&dev->slock, flags);
751 list_add_tail(&buf->list, &vidq->active);
752 spin_unlock_irqrestore(&dev->slock, flags);
753 }
754
755 static struct vb2_ops em28xx_video_qops = {
756 .queue_setup = queue_setup,
757 .buf_prepare = buffer_prepare,
758 .buf_queue = buffer_queue,
759 .start_streaming = em28xx_start_analog_streaming,
760 .stop_streaming = em28xx_stop_streaming,
761 .wait_prepare = vb2_ops_wait_prepare,
762 .wait_finish = vb2_ops_wait_finish,
763 };
764
765 int em28xx_vb2_setup(struct em28xx *dev)
766 {
767 int rc;
768 struct vb2_queue *q;
769
770 /* Setup Videobuf2 for Video capture */
771 q = &dev->vb_vidq;
772 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
773 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
774 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
775 q->drv_priv = dev;
776 q->buf_struct_size = sizeof(struct em28xx_buffer);
777 q->ops = &em28xx_video_qops;
778 q->mem_ops = &vb2_vmalloc_memops;
779
780 rc = vb2_queue_init(q);
781 if (rc < 0)
782 return rc;
783
784 /* Setup Videobuf2 for VBI capture */
785 q = &dev->vb_vbiq;
786 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
787 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
788 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
789 q->drv_priv = dev;
790 q->buf_struct_size = sizeof(struct em28xx_buffer);
791 q->ops = &em28xx_vbi_qops;
792 q->mem_ops = &vb2_vmalloc_memops;
793
794 rc = vb2_queue_init(q);
795 if (rc < 0)
796 return rc;
797
798 return 0;
799 }
800
801 /********************* v4l2 interface **************************************/
802
803 static void video_mux(struct em28xx *dev, int index)
804 {
805 dev->ctl_input = index;
806 dev->ctl_ainput = INPUT(index)->amux;
807 dev->ctl_aoutput = INPUT(index)->aout;
808
809 if (!dev->ctl_aoutput)
810 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
811
812 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
813 INPUT(index)->vmux, 0, 0);
814
815 if (dev->board.has_msp34xx) {
816 if (dev->i2s_speed) {
817 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
818 s_i2s_clock_freq, dev->i2s_speed);
819 }
820 /* Note: this is msp3400 specific */
821 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
822 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
823 }
824
825 if (dev->board.adecoder != EM28XX_NOADECODER) {
826 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
827 dev->ctl_ainput, dev->ctl_aoutput, 0);
828 }
829
830 em28xx_audio_analog_set(dev);
831 }
832
833 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
834 {
835 struct em28xx *dev = priv;
836
837 /*
838 * In the case of non-AC97 volume controls, we still need
839 * to do some setups at em28xx, in order to mute/unmute
840 * and to adjust audio volume. However, the value ranges
841 * should be checked by the corresponding V4L subdriver.
842 */
843 switch (ctrl->id) {
844 case V4L2_CID_AUDIO_MUTE:
845 dev->mute = ctrl->val;
846 em28xx_audio_analog_set(dev);
847 break;
848 case V4L2_CID_AUDIO_VOLUME:
849 dev->volume = ctrl->val;
850 em28xx_audio_analog_set(dev);
851 break;
852 }
853 }
854
855 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
856 {
857 struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
858 int ret = -EINVAL;
859
860 switch (ctrl->id) {
861 case V4L2_CID_AUDIO_MUTE:
862 dev->mute = ctrl->val;
863 ret = em28xx_audio_analog_set(dev);
864 break;
865 case V4L2_CID_AUDIO_VOLUME:
866 dev->volume = ctrl->val;
867 ret = em28xx_audio_analog_set(dev);
868 break;
869 case V4L2_CID_CONTRAST:
870 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
871 break;
872 case V4L2_CID_BRIGHTNESS:
873 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
874 break;
875 case V4L2_CID_SATURATION:
876 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
877 break;
878 case V4L2_CID_BLUE_BALANCE:
879 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
880 break;
881 case V4L2_CID_RED_BALANCE:
882 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
883 break;
884 case V4L2_CID_SHARPNESS:
885 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
886 break;
887 }
888
889 return (ret < 0) ? ret : 0;
890 }
891
892 const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
893 .s_ctrl = em28xx_s_ctrl,
894 };
895
896 static void size_to_scale(struct em28xx *dev,
897 unsigned int width, unsigned int height,
898 unsigned int *hscale, unsigned int *vscale)
899 {
900 unsigned int maxw = norm_maxw(dev);
901 unsigned int maxh = norm_maxh(dev);
902
903 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
904 if (*hscale > EM28XX_HVSCALE_MAX)
905 *hscale = EM28XX_HVSCALE_MAX;
906
907 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
908 if (*vscale > EM28XX_HVSCALE_MAX)
909 *vscale = EM28XX_HVSCALE_MAX;
910 }
911
912 static void scale_to_size(struct em28xx *dev,
913 unsigned int hscale, unsigned int vscale,
914 unsigned int *width, unsigned int *height)
915 {
916 unsigned int maxw = norm_maxw(dev);
917 unsigned int maxh = norm_maxh(dev);
918
919 *width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
920 *height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
921 }
922
923 /* ------------------------------------------------------------------
924 IOCTL vidioc handling
925 ------------------------------------------------------------------*/
926
927 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
928 struct v4l2_format *f)
929 {
930 struct em28xx_fh *fh = priv;
931 struct em28xx *dev = fh->dev;
932
933 f->fmt.pix.width = dev->width;
934 f->fmt.pix.height = dev->height;
935 f->fmt.pix.pixelformat = dev->format->fourcc;
936 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
937 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
938 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
939
940 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
941 if (dev->progressive)
942 f->fmt.pix.field = V4L2_FIELD_NONE;
943 else
944 f->fmt.pix.field = dev->interlaced ?
945 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
946 return 0;
947 }
948
949 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
950 {
951 unsigned int i;
952
953 for (i = 0; i < ARRAY_SIZE(format); i++)
954 if (format[i].fourcc == fourcc)
955 return &format[i];
956
957 return NULL;
958 }
959
960 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
961 struct v4l2_format *f)
962 {
963 struct em28xx_fh *fh = priv;
964 struct em28xx *dev = fh->dev;
965 unsigned int width = f->fmt.pix.width;
966 unsigned int height = f->fmt.pix.height;
967 unsigned int maxw = norm_maxw(dev);
968 unsigned int maxh = norm_maxh(dev);
969 unsigned int hscale, vscale;
970 struct em28xx_fmt *fmt;
971
972 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
973 if (!fmt) {
974 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
975 f->fmt.pix.pixelformat);
976 return -EINVAL;
977 }
978
979 if (dev->board.is_em2800) {
980 /* the em2800 can only scale down to 50% */
981 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
982 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
983 /*
984 * MaxPacketSize for em2800 is too small to capture at full
985 * resolution use half of maxw as the scaler can only scale
986 * to 50%
987 */
988 if (width == maxw && height == maxh)
989 width /= 2;
990 } else {
991 /* width must even because of the YUYV format
992 height must be even because of interlacing */
993 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
994 1, 0);
995 }
996
997 size_to_scale(dev, width, height, &hscale, &vscale);
998 scale_to_size(dev, hscale, vscale, &width, &height);
999
1000 f->fmt.pix.width = width;
1001 f->fmt.pix.height = height;
1002 f->fmt.pix.pixelformat = fmt->fourcc;
1003 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1004 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1005 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1006 if (dev->progressive)
1007 f->fmt.pix.field = V4L2_FIELD_NONE;
1008 else
1009 f->fmt.pix.field = dev->interlaced ?
1010 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1011
1012 return 0;
1013 }
1014
1015 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1016 unsigned width, unsigned height)
1017 {
1018 struct em28xx_fmt *fmt;
1019
1020 fmt = format_by_fourcc(fourcc);
1021 if (!fmt)
1022 return -EINVAL;
1023
1024 dev->format = fmt;
1025 dev->width = width;
1026 dev->height = height;
1027
1028 /* set new image size */
1029 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1030
1031 em28xx_resolution_set(dev);
1032
1033 return 0;
1034 }
1035
1036 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1037 struct v4l2_format *f)
1038 {
1039 struct em28xx *dev = video_drvdata(file);
1040
1041 if (dev->streaming_users > 0)
1042 return -EBUSY;
1043
1044 vidioc_try_fmt_vid_cap(file, priv, f);
1045
1046 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1047 f->fmt.pix.width, f->fmt.pix.height);
1048 }
1049
1050 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1051 {
1052 struct em28xx_fh *fh = priv;
1053 struct em28xx *dev = fh->dev;
1054
1055 *norm = dev->norm;
1056
1057 return 0;
1058 }
1059
1060 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
1061 {
1062 struct em28xx_fh *fh = priv;
1063 struct em28xx *dev = fh->dev;
1064
1065 v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
1066
1067 return 0;
1068 }
1069
1070 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1071 {
1072 struct em28xx_fh *fh = priv;
1073 struct em28xx *dev = fh->dev;
1074 struct v4l2_format f;
1075
1076 if (norm == dev->norm)
1077 return 0;
1078
1079 if (dev->streaming_users > 0)
1080 return -EBUSY;
1081
1082 dev->norm = norm;
1083
1084 /* Adjusts width/height, if needed */
1085 f.fmt.pix.width = 720;
1086 f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576;
1087 vidioc_try_fmt_vid_cap(file, priv, &f);
1088
1089 /* set new image size */
1090 dev->width = f.fmt.pix.width;
1091 dev->height = f.fmt.pix.height;
1092 size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1093
1094 em28xx_resolution_set(dev);
1095 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1096
1097 return 0;
1098 }
1099
1100 static int vidioc_g_parm(struct file *file, void *priv,
1101 struct v4l2_streamparm *p)
1102 {
1103 struct em28xx_fh *fh = priv;
1104 struct em28xx *dev = fh->dev;
1105 int rc = 0;
1106
1107 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1108 if (dev->board.is_webcam)
1109 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1110 video, g_parm, p);
1111 else
1112 v4l2_video_std_frame_period(dev->norm,
1113 &p->parm.capture.timeperframe);
1114
1115 return rc;
1116 }
1117
1118 static int vidioc_s_parm(struct file *file, void *priv,
1119 struct v4l2_streamparm *p)
1120 {
1121 struct em28xx_fh *fh = priv;
1122 struct em28xx *dev = fh->dev;
1123
1124 p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1125 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1126 }
1127
1128 static const char *iname[] = {
1129 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1130 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1131 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1132 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1133 [EM28XX_VMUX_SVIDEO] = "S-Video",
1134 [EM28XX_VMUX_TELEVISION] = "Television",
1135 [EM28XX_VMUX_CABLE] = "Cable TV",
1136 [EM28XX_VMUX_DVB] = "DVB",
1137 [EM28XX_VMUX_DEBUG] = "for debug only",
1138 };
1139
1140 static int vidioc_enum_input(struct file *file, void *priv,
1141 struct v4l2_input *i)
1142 {
1143 struct em28xx_fh *fh = priv;
1144 struct em28xx *dev = fh->dev;
1145 unsigned int n;
1146
1147 n = i->index;
1148 if (n >= MAX_EM28XX_INPUT)
1149 return -EINVAL;
1150 if (0 == INPUT(n)->type)
1151 return -EINVAL;
1152
1153 i->index = n;
1154 i->type = V4L2_INPUT_TYPE_CAMERA;
1155
1156 strcpy(i->name, iname[INPUT(n)->type]);
1157
1158 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1159 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1160 i->type = V4L2_INPUT_TYPE_TUNER;
1161
1162 i->std = dev->vdev->tvnorms;
1163 /* webcams do not have the STD API */
1164 if (dev->board.is_webcam)
1165 i->capabilities = 0;
1166
1167 return 0;
1168 }
1169
1170 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1171 {
1172 struct em28xx_fh *fh = priv;
1173 struct em28xx *dev = fh->dev;
1174
1175 *i = dev->ctl_input;
1176
1177 return 0;
1178 }
1179
1180 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1181 {
1182 struct em28xx_fh *fh = priv;
1183 struct em28xx *dev = fh->dev;
1184
1185 if (i >= MAX_EM28XX_INPUT)
1186 return -EINVAL;
1187 if (0 == INPUT(i)->type)
1188 return -EINVAL;
1189
1190 video_mux(dev, i);
1191 return 0;
1192 }
1193
1194 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1195 {
1196 struct em28xx_fh *fh = priv;
1197 struct em28xx *dev = fh->dev;
1198
1199 switch (a->index) {
1200 case EM28XX_AMUX_VIDEO:
1201 strcpy(a->name, "Television");
1202 break;
1203 case EM28XX_AMUX_LINE_IN:
1204 strcpy(a->name, "Line In");
1205 break;
1206 case EM28XX_AMUX_VIDEO2:
1207 strcpy(a->name, "Television alt");
1208 break;
1209 case EM28XX_AMUX_PHONE:
1210 strcpy(a->name, "Phone");
1211 break;
1212 case EM28XX_AMUX_MIC:
1213 strcpy(a->name, "Mic");
1214 break;
1215 case EM28XX_AMUX_CD:
1216 strcpy(a->name, "CD");
1217 break;
1218 case EM28XX_AMUX_AUX:
1219 strcpy(a->name, "Aux");
1220 break;
1221 case EM28XX_AMUX_PCM_OUT:
1222 strcpy(a->name, "PCM");
1223 break;
1224 default:
1225 return -EINVAL;
1226 }
1227
1228 a->index = dev->ctl_ainput;
1229 a->capability = V4L2_AUDCAP_STEREO;
1230
1231 return 0;
1232 }
1233
1234 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1235 {
1236 struct em28xx_fh *fh = priv;
1237 struct em28xx *dev = fh->dev;
1238
1239 if (a->index >= MAX_EM28XX_INPUT)
1240 return -EINVAL;
1241 if (0 == INPUT(a->index)->type)
1242 return -EINVAL;
1243
1244 dev->ctl_ainput = INPUT(a->index)->amux;
1245 dev->ctl_aoutput = INPUT(a->index)->aout;
1246
1247 if (!dev->ctl_aoutput)
1248 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1249
1250 return 0;
1251 }
1252
1253 static int vidioc_g_tuner(struct file *file, void *priv,
1254 struct v4l2_tuner *t)
1255 {
1256 struct em28xx_fh *fh = priv;
1257 struct em28xx *dev = fh->dev;
1258
1259 if (0 != t->index)
1260 return -EINVAL;
1261
1262 strcpy(t->name, "Tuner");
1263
1264 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1265 return 0;
1266 }
1267
1268 static int vidioc_s_tuner(struct file *file, void *priv,
1269 const struct v4l2_tuner *t)
1270 {
1271 struct em28xx_fh *fh = priv;
1272 struct em28xx *dev = fh->dev;
1273
1274 if (0 != t->index)
1275 return -EINVAL;
1276
1277 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1278 return 0;
1279 }
1280
1281 static int vidioc_g_frequency(struct file *file, void *priv,
1282 struct v4l2_frequency *f)
1283 {
1284 struct em28xx_fh *fh = priv;
1285 struct em28xx *dev = fh->dev;
1286
1287 if (0 != f->tuner)
1288 return -EINVAL;
1289
1290 f->frequency = dev->ctl_freq;
1291 return 0;
1292 }
1293
1294 static int vidioc_s_frequency(struct file *file, void *priv,
1295 const struct v4l2_frequency *f)
1296 {
1297 struct v4l2_frequency new_freq = *f;
1298 struct em28xx_fh *fh = priv;
1299 struct em28xx *dev = fh->dev;
1300
1301 if (0 != f->tuner)
1302 return -EINVAL;
1303
1304 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1305 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1306 dev->ctl_freq = new_freq.frequency;
1307
1308 return 0;
1309 }
1310
1311 #ifdef CONFIG_VIDEO_ADV_DEBUG
1312 static int vidioc_g_chip_info(struct file *file, void *priv,
1313 struct v4l2_dbg_chip_info *chip)
1314 {
1315 struct em28xx_fh *fh = priv;
1316 struct em28xx *dev = fh->dev;
1317
1318 if (chip->match.addr > 1)
1319 return -EINVAL;
1320 if (chip->match.addr == 1)
1321 strlcpy(chip->name, "ac97", sizeof(chip->name));
1322 else
1323 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
1324 return 0;
1325 }
1326
1327 static int em28xx_reg_len(int reg)
1328 {
1329 switch (reg) {
1330 case EM28XX_R40_AC97LSB:
1331 case EM28XX_R30_HSCALELOW:
1332 case EM28XX_R32_VSCALELOW:
1333 return 2;
1334 default:
1335 return 1;
1336 }
1337 }
1338
1339 static int vidioc_g_register(struct file *file, void *priv,
1340 struct v4l2_dbg_register *reg)
1341 {
1342 struct em28xx_fh *fh = priv;
1343 struct em28xx *dev = fh->dev;
1344 int ret;
1345
1346 if (reg->match.addr > 1)
1347 return -EINVAL;
1348 if (reg->match.addr) {
1349 ret = em28xx_read_ac97(dev, reg->reg);
1350 if (ret < 0)
1351 return ret;
1352
1353 reg->val = ret;
1354 reg->size = 1;
1355 return 0;
1356 }
1357
1358 /* Match host */
1359 reg->size = em28xx_reg_len(reg->reg);
1360 if (reg->size == 1) {
1361 ret = em28xx_read_reg(dev, reg->reg);
1362
1363 if (ret < 0)
1364 return ret;
1365
1366 reg->val = ret;
1367 } else {
1368 __le16 val = 0;
1369 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1370 reg->reg, (char *)&val, 2);
1371 if (ret < 0)
1372 return ret;
1373
1374 reg->val = le16_to_cpu(val);
1375 }
1376
1377 return 0;
1378 }
1379
1380 static int vidioc_s_register(struct file *file, void *priv,
1381 const struct v4l2_dbg_register *reg)
1382 {
1383 struct em28xx_fh *fh = priv;
1384 struct em28xx *dev = fh->dev;
1385 __le16 buf;
1386
1387 if (reg->match.addr > 1)
1388 return -EINVAL;
1389 if (reg->match.addr)
1390 return em28xx_write_ac97(dev, reg->reg, reg->val);
1391
1392 /* Match host */
1393 buf = cpu_to_le16(reg->val);
1394
1395 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1396 em28xx_reg_len(reg->reg));
1397 }
1398 #endif
1399
1400
1401 static int vidioc_querycap(struct file *file, void *priv,
1402 struct v4l2_capability *cap)
1403 {
1404 struct video_device *vdev = video_devdata(file);
1405 struct em28xx_fh *fh = priv;
1406 struct em28xx *dev = fh->dev;
1407
1408 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1409 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1410 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1411
1412 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1413 cap->device_caps = V4L2_CAP_READWRITE |
1414 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1415 else if (vdev->vfl_type == VFL_TYPE_RADIO)
1416 cap->device_caps = V4L2_CAP_RADIO;
1417 else
1418 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1419
1420 if (dev->audio_mode.has_audio)
1421 cap->device_caps |= V4L2_CAP_AUDIO;
1422
1423 if (dev->tuner_type != TUNER_ABSENT)
1424 cap->device_caps |= V4L2_CAP_TUNER;
1425
1426 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1427 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1428 if (dev->vbi_dev)
1429 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1430 if (dev->radio_dev)
1431 cap->capabilities |= V4L2_CAP_RADIO;
1432 return 0;
1433 }
1434
1435 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1436 struct v4l2_fmtdesc *f)
1437 {
1438 if (unlikely(f->index >= ARRAY_SIZE(format)))
1439 return -EINVAL;
1440
1441 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1442 f->pixelformat = format[f->index].fourcc;
1443
1444 return 0;
1445 }
1446
1447 static int vidioc_enum_framesizes(struct file *file, void *priv,
1448 struct v4l2_frmsizeenum *fsize)
1449 {
1450 struct em28xx_fh *fh = priv;
1451 struct em28xx *dev = fh->dev;
1452 struct em28xx_fmt *fmt;
1453 unsigned int maxw = norm_maxw(dev);
1454 unsigned int maxh = norm_maxh(dev);
1455
1456 fmt = format_by_fourcc(fsize->pixel_format);
1457 if (!fmt) {
1458 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1459 fsize->pixel_format);
1460 return -EINVAL;
1461 }
1462
1463 if (dev->board.is_em2800) {
1464 if (fsize->index > 1)
1465 return -EINVAL;
1466 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1467 fsize->discrete.width = maxw / (1 + fsize->index);
1468 fsize->discrete.height = maxh / (1 + fsize->index);
1469 return 0;
1470 }
1471
1472 if (fsize->index != 0)
1473 return -EINVAL;
1474
1475 /* Report a continuous range */
1476 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1477 scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1478 &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1479 if (fsize->stepwise.min_width < 48)
1480 fsize->stepwise.min_width = 48;
1481 if (fsize->stepwise.min_height < 38)
1482 fsize->stepwise.min_height = 38;
1483 fsize->stepwise.max_width = maxw;
1484 fsize->stepwise.max_height = maxh;
1485 fsize->stepwise.step_width = 1;
1486 fsize->stepwise.step_height = 1;
1487 return 0;
1488 }
1489
1490 /* RAW VBI ioctls */
1491
1492 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1493 struct v4l2_format *format)
1494 {
1495 struct em28xx_fh *fh = priv;
1496 struct em28xx *dev = fh->dev;
1497
1498 format->fmt.vbi.samples_per_line = dev->vbi_width;
1499 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1500 format->fmt.vbi.offset = 0;
1501 format->fmt.vbi.flags = 0;
1502 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1503 format->fmt.vbi.count[0] = dev->vbi_height;
1504 format->fmt.vbi.count[1] = dev->vbi_height;
1505 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1506
1507 /* Varies by video standard (NTSC, PAL, etc.) */
1508 if (dev->norm & V4L2_STD_525_60) {
1509 /* NTSC */
1510 format->fmt.vbi.start[0] = 10;
1511 format->fmt.vbi.start[1] = 273;
1512 } else if (dev->norm & V4L2_STD_625_50) {
1513 /* PAL */
1514 format->fmt.vbi.start[0] = 6;
1515 format->fmt.vbi.start[1] = 318;
1516 }
1517
1518 return 0;
1519 }
1520
1521 /* ----------------------------------------------------------- */
1522 /* RADIO ESPECIFIC IOCTLS */
1523 /* ----------------------------------------------------------- */
1524
1525 static int radio_g_tuner(struct file *file, void *priv,
1526 struct v4l2_tuner *t)
1527 {
1528 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1529
1530 if (unlikely(t->index > 0))
1531 return -EINVAL;
1532
1533 strcpy(t->name, "Radio");
1534
1535 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1536
1537 return 0;
1538 }
1539
1540 static int radio_s_tuner(struct file *file, void *priv,
1541 const struct v4l2_tuner *t)
1542 {
1543 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1544
1545 if (0 != t->index)
1546 return -EINVAL;
1547
1548 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1549
1550 return 0;
1551 }
1552
1553 /*
1554 * em28xx_v4l2_open()
1555 * inits the device and starts isoc transfer
1556 */
1557 static int em28xx_v4l2_open(struct file *filp)
1558 {
1559 struct video_device *vdev = video_devdata(filp);
1560 struct em28xx *dev = video_drvdata(filp);
1561 enum v4l2_buf_type fh_type = 0;
1562 struct em28xx_fh *fh;
1563
1564 switch (vdev->vfl_type) {
1565 case VFL_TYPE_GRABBER:
1566 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1567 break;
1568 case VFL_TYPE_VBI:
1569 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1570 break;
1571 }
1572
1573 em28xx_videodbg("open dev=%s type=%s users=%d\n",
1574 video_device_node_name(vdev), v4l2_type_names[fh_type],
1575 dev->users);
1576
1577
1578 if (mutex_lock_interruptible(&dev->lock))
1579 return -ERESTARTSYS;
1580 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1581 if (!fh) {
1582 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1583 mutex_unlock(&dev->lock);
1584 return -ENOMEM;
1585 }
1586 v4l2_fh_init(&fh->fh, vdev);
1587 fh->dev = dev;
1588 fh->type = fh_type;
1589 filp->private_data = fh;
1590
1591 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1592 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1593 em28xx_resolution_set(dev);
1594
1595 /* Needed, since GPIO might have disabled power of
1596 some i2c device
1597 */
1598 em28xx_wake_i2c(dev);
1599
1600 }
1601
1602 if (vdev->vfl_type == VFL_TYPE_RADIO) {
1603 em28xx_videodbg("video_open: setting radio device\n");
1604 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1605 }
1606
1607 dev->users++;
1608
1609 mutex_unlock(&dev->lock);
1610 v4l2_fh_add(&fh->fh);
1611
1612 return 0;
1613 }
1614
1615 /*
1616 * em28xx_realease_resources()
1617 * unregisters the v4l2,i2c and usb devices
1618 * called when the device gets disconected or at module unload
1619 */
1620 void em28xx_release_analog_resources(struct em28xx *dev)
1621 {
1622
1623 /*FIXME: I2C IR should be disconnected */
1624
1625 if (dev->radio_dev) {
1626 if (video_is_registered(dev->radio_dev))
1627 video_unregister_device(dev->radio_dev);
1628 else
1629 video_device_release(dev->radio_dev);
1630 dev->radio_dev = NULL;
1631 }
1632 if (dev->vbi_dev) {
1633 em28xx_info("V4L2 device %s deregistered\n",
1634 video_device_node_name(dev->vbi_dev));
1635 if (video_is_registered(dev->vbi_dev))
1636 video_unregister_device(dev->vbi_dev);
1637 else
1638 video_device_release(dev->vbi_dev);
1639 dev->vbi_dev = NULL;
1640 }
1641 if (dev->vdev) {
1642 em28xx_info("V4L2 device %s deregistered\n",
1643 video_device_node_name(dev->vdev));
1644 if (video_is_registered(dev->vdev))
1645 video_unregister_device(dev->vdev);
1646 else
1647 video_device_release(dev->vdev);
1648 dev->vdev = NULL;
1649 }
1650 }
1651
1652 /*
1653 * em28xx_v4l2_close()
1654 * stops streaming and deallocates all resources allocated by the v4l2
1655 * calls and ioctls
1656 */
1657 static int em28xx_v4l2_close(struct file *filp)
1658 {
1659 struct em28xx_fh *fh = filp->private_data;
1660 struct em28xx *dev = fh->dev;
1661 int errCode;
1662
1663 em28xx_videodbg("users=%d\n", dev->users);
1664
1665 mutex_lock(&dev->lock);
1666 vb2_fop_release(filp);
1667
1668 if (dev->users == 1) {
1669 /* the device is already disconnect,
1670 free the remaining resources */
1671 if (dev->disconnected) {
1672 em28xx_release_resources(dev);
1673 kfree(dev->alt_max_pkt_size_isoc);
1674 mutex_unlock(&dev->lock);
1675 kfree(dev);
1676 return 0;
1677 }
1678
1679 /* Save some power by putting tuner to sleep */
1680 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1681
1682 /* do this before setting alternate! */
1683 em28xx_set_mode(dev, EM28XX_SUSPEND);
1684
1685 /* set alternate 0 */
1686 dev->alt = 0;
1687 em28xx_videodbg("setting alternate 0\n");
1688 errCode = usb_set_interface(dev->udev, 0, 0);
1689 if (errCode < 0) {
1690 em28xx_errdev("cannot change alternate number to "
1691 "0 (error=%i)\n", errCode);
1692 }
1693 }
1694
1695 dev->users--;
1696 mutex_unlock(&dev->lock);
1697 return 0;
1698 }
1699
1700 static const struct v4l2_file_operations em28xx_v4l_fops = {
1701 .owner = THIS_MODULE,
1702 .open = em28xx_v4l2_open,
1703 .release = em28xx_v4l2_close,
1704 .read = vb2_fop_read,
1705 .poll = vb2_fop_poll,
1706 .mmap = vb2_fop_mmap,
1707 .unlocked_ioctl = video_ioctl2,
1708 };
1709
1710 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1711 .vidioc_querycap = vidioc_querycap,
1712 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1713 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1714 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1715 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1716 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1717 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1718 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1719 .vidioc_enum_framesizes = vidioc_enum_framesizes,
1720 .vidioc_g_audio = vidioc_g_audio,
1721 .vidioc_s_audio = vidioc_s_audio,
1722
1723 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1724 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1725 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1726 .vidioc_querybuf = vb2_ioctl_querybuf,
1727 .vidioc_qbuf = vb2_ioctl_qbuf,
1728 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1729
1730 .vidioc_g_std = vidioc_g_std,
1731 .vidioc_querystd = vidioc_querystd,
1732 .vidioc_s_std = vidioc_s_std,
1733 .vidioc_g_parm = vidioc_g_parm,
1734 .vidioc_s_parm = vidioc_s_parm,
1735 .vidioc_enum_input = vidioc_enum_input,
1736 .vidioc_g_input = vidioc_g_input,
1737 .vidioc_s_input = vidioc_s_input,
1738 .vidioc_streamon = vb2_ioctl_streamon,
1739 .vidioc_streamoff = vb2_ioctl_streamoff,
1740 .vidioc_g_tuner = vidioc_g_tuner,
1741 .vidioc_s_tuner = vidioc_s_tuner,
1742 .vidioc_g_frequency = vidioc_g_frequency,
1743 .vidioc_s_frequency = vidioc_s_frequency,
1744 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1745 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1746 #ifdef CONFIG_VIDEO_ADV_DEBUG
1747 .vidioc_g_chip_info = vidioc_g_chip_info,
1748 .vidioc_g_register = vidioc_g_register,
1749 .vidioc_s_register = vidioc_s_register,
1750 #endif
1751 };
1752
1753 static const struct video_device em28xx_video_template = {
1754 .fops = &em28xx_v4l_fops,
1755 .release = video_device_release_empty,
1756 .ioctl_ops = &video_ioctl_ops,
1757
1758 .tvnorms = V4L2_STD_ALL,
1759 };
1760
1761 static const struct v4l2_file_operations radio_fops = {
1762 .owner = THIS_MODULE,
1763 .open = em28xx_v4l2_open,
1764 .release = em28xx_v4l2_close,
1765 .unlocked_ioctl = video_ioctl2,
1766 };
1767
1768 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1769 .vidioc_querycap = vidioc_querycap,
1770 .vidioc_g_tuner = radio_g_tuner,
1771 .vidioc_s_tuner = radio_s_tuner,
1772 .vidioc_g_frequency = vidioc_g_frequency,
1773 .vidioc_s_frequency = vidioc_s_frequency,
1774 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1775 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1776 #ifdef CONFIG_VIDEO_ADV_DEBUG
1777 .vidioc_g_chip_info = vidioc_g_chip_info,
1778 .vidioc_g_register = vidioc_g_register,
1779 .vidioc_s_register = vidioc_s_register,
1780 #endif
1781 };
1782
1783 static struct video_device em28xx_radio_template = {
1784 .name = "em28xx-radio",
1785 .fops = &radio_fops,
1786 .ioctl_ops = &radio_ioctl_ops,
1787 };
1788
1789 /******************************** usb interface ******************************/
1790
1791
1792
1793 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1794 const struct video_device *template,
1795 const char *type_name)
1796 {
1797 struct video_device *vfd;
1798
1799 vfd = video_device_alloc();
1800 if (NULL == vfd)
1801 return NULL;
1802
1803 *vfd = *template;
1804 vfd->v4l2_dev = &dev->v4l2_dev;
1805 vfd->debug = video_debug;
1806 vfd->lock = &dev->lock;
1807 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1808 if (dev->board.is_webcam)
1809 vfd->tvnorms = 0;
1810
1811 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1812 dev->name, type_name);
1813
1814 video_set_drvdata(vfd, dev);
1815 return vfd;
1816 }
1817
1818 int em28xx_register_analog_devices(struct em28xx *dev)
1819 {
1820 u8 val;
1821 int ret;
1822 unsigned int maxw;
1823
1824 printk(KERN_INFO "%s: v4l2 driver version %s\n",
1825 dev->name, EM28XX_VERSION);
1826
1827 /* set default norm */
1828 dev->norm = V4L2_STD_PAL;
1829 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1830 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1831
1832 /* Analog specific initialization */
1833 dev->format = &format[0];
1834
1835 maxw = norm_maxw(dev);
1836 /* MaxPacketSize for em2800 is too small to capture at full resolution
1837 * use half of maxw as the scaler can only scale to 50% */
1838 if (dev->board.is_em2800)
1839 maxw /= 2;
1840
1841 em28xx_set_video_format(dev, format[0].fourcc,
1842 maxw, norm_maxh(dev));
1843
1844 video_mux(dev, 0);
1845
1846 /* Audio defaults */
1847 dev->mute = 1;
1848 dev->volume = 0x1f;
1849
1850 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1851 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1852 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1853 (EM28XX_XCLK_AUDIO_UNMUTE | val));
1854
1855 em28xx_set_outfmt(dev);
1856 em28xx_compression_disable(dev);
1857
1858 /* Add image controls */
1859 /* NOTE: at this point, the subdevices are already registered, so bridge
1860 * controls are only added/enabled when no subdevice provides them */
1861 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1862 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1863 V4L2_CID_CONTRAST,
1864 0, 0x1f, 1, CONTRAST_DEFAULT);
1865 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1866 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1867 V4L2_CID_BRIGHTNESS,
1868 -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1869 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1870 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1871 V4L2_CID_SATURATION,
1872 0, 0x1f, 1, SATURATION_DEFAULT);
1873 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1874 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1875 V4L2_CID_BLUE_BALANCE,
1876 -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1877 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1878 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1879 V4L2_CID_RED_BALANCE,
1880 -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1881 if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1882 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1883 V4L2_CID_SHARPNESS,
1884 0, 0x0f, 1, SHARPNESS_DEFAULT);
1885
1886 /* Reset image controls */
1887 em28xx_colorlevels_set_default(dev);
1888 v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1889 if (dev->ctrl_handler.error)
1890 return dev->ctrl_handler.error;
1891
1892 /* allocate and fill video video_device struct */
1893 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1894 if (!dev->vdev) {
1895 em28xx_errdev("cannot allocate video_device.\n");
1896 return -ENODEV;
1897 }
1898 dev->vdev->queue = &dev->vb_vidq;
1899 dev->vdev->queue->lock = &dev->vb_queue_lock;
1900
1901 /* disable inapplicable ioctls */
1902 if (dev->board.is_webcam) {
1903 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1904 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1905 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1906 } else {
1907 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1908 }
1909 if (dev->tuner_type == TUNER_ABSENT) {
1910 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1911 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1912 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1913 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1914 }
1915 if (!dev->audio_mode.has_audio) {
1916 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1917 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1918 }
1919
1920 /* register v4l2 video video_device */
1921 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1922 video_nr[dev->devno]);
1923 if (ret) {
1924 em28xx_errdev("unable to register video device (error=%i).\n",
1925 ret);
1926 return ret;
1927 }
1928
1929 /* Allocate and fill vbi video_device struct */
1930 if (em28xx_vbi_supported(dev) == 1) {
1931 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1932 "vbi");
1933
1934 dev->vbi_dev->queue = &dev->vb_vbiq;
1935 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1936
1937 /* disable inapplicable ioctls */
1938 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1939 if (dev->tuner_type == TUNER_ABSENT) {
1940 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1941 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1942 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1943 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1944 }
1945 if (!dev->audio_mode.has_audio) {
1946 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
1947 v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
1948 }
1949
1950 /* register v4l2 vbi video_device */
1951 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1952 vbi_nr[dev->devno]);
1953 if (ret < 0) {
1954 em28xx_errdev("unable to register vbi device\n");
1955 return ret;
1956 }
1957 }
1958
1959 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
1960 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
1961 "radio");
1962 if (!dev->radio_dev) {
1963 em28xx_errdev("cannot allocate video_device.\n");
1964 return -ENODEV;
1965 }
1966 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1967 radio_nr[dev->devno]);
1968 if (ret < 0) {
1969 em28xx_errdev("can't register radio device\n");
1970 return ret;
1971 }
1972 em28xx_info("Registered radio device as %s\n",
1973 video_device_node_name(dev->radio_dev));
1974 }
1975
1976 em28xx_info("V4L2 video device registered as %s\n",
1977 video_device_node_name(dev->vdev));
1978
1979 if (dev->vbi_dev)
1980 em28xx_info("V4L2 VBI device registered as %s\n",
1981 video_device_node_name(dev->vbi_dev));
1982
1983 return 0;
1984 }
CRIS linux kernel tree