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Merge remote-tracking branch 'moduleh/module.h-split'
[linux-2.6/next.git] / drivers / media / video / em28xx / em28xx-video.c
blobd176dc0394e2f9c276c4e333f695c7c91f39a563
1 /*
2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3 video capture devices
4
5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
7 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Sascha Sommer <saschasommer@freenet.de>
9
10 Some parts based on SN9C10x PC Camera Controllers GPL driver made
11 by Luca Risolia <luca.risolia@studio.unibo.it>
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/bitmap.h>
33 #include <linux/usb.h>
34 #include <linux/i2c.h>
35 #include <linux/mm.h>
36 #include <linux/mutex.h>
37 #include <linux/slab.h>
38
39 #include "em28xx.h"
40 #include <media/v4l2-common.h>
41 #include <media/v4l2-ioctl.h>
42 #include <media/v4l2-chip-ident.h>
43 #include <media/msp3400.h>
44 #include <media/tuner.h>
45
46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
47 "Markus Rechberger <mrechberger@gmail.com>, " \
48 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
49 "Sascha Sommer <saschasommer@freenet.de>"
50
51 #define DRIVER_DESC "Empia em28xx based USB video device driver"
52
53 #define EM28XX_VERSION "0.1.3"
54
55 #define em28xx_videodbg(fmt, arg...) do {\
56 if (video_debug) \
57 printk(KERN_INFO "%s %s :"fmt, \
58 dev->name, __func__ , ##arg); } while (0)
59
60 static unsigned int isoc_debug;
61 module_param(isoc_debug, int, 0644);
62 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
63
64 #define em28xx_isocdbg(fmt, arg...) \
65 do {\
66 if (isoc_debug) { \
67 printk(KERN_INFO "%s %s :"fmt, \
68 dev->name, __func__ , ##arg); \
69 } \
70 } while (0)
71
72 MODULE_AUTHOR(DRIVER_AUTHOR);
73 MODULE_DESCRIPTION(DRIVER_DESC);
74 MODULE_LICENSE("GPL");
75 MODULE_VERSION(EM28XX_VERSION);
76
77 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
78 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
79 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
80
81 module_param_array(video_nr, int, NULL, 0444);
82 module_param_array(vbi_nr, int, NULL, 0444);
83 module_param_array(radio_nr, int, NULL, 0444);
84 MODULE_PARM_DESC(video_nr, "video device numbers");
85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
87
88 static unsigned int video_debug;
89 module_param(video_debug, int, 0644);
90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
91
92 /* supported video standards */
93 static struct em28xx_fmt format[] = {
94 {
95 .name = "16 bpp YUY2, 4:2:2, packed",
96 .fourcc = V4L2_PIX_FMT_YUYV,
97 .depth = 16,
98 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
99 }, {
100 .name = "16 bpp RGB 565, LE",
101 .fourcc = V4L2_PIX_FMT_RGB565,
102 .depth = 16,
103 .reg = EM28XX_OUTFMT_RGB_16_656,
104 }, {
105 .name = "8 bpp Bayer BGBG..GRGR",
106 .fourcc = V4L2_PIX_FMT_SBGGR8,
107 .depth = 8,
108 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
109 }, {
110 .name = "8 bpp Bayer GRGR..BGBG",
111 .fourcc = V4L2_PIX_FMT_SGRBG8,
112 .depth = 8,
113 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
114 }, {
115 .name = "8 bpp Bayer GBGB..RGRG",
116 .fourcc = V4L2_PIX_FMT_SGBRG8,
117 .depth = 8,
118 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
119 }, {
120 .name = "12 bpp YUV411",
121 .fourcc = V4L2_PIX_FMT_YUV411P,
122 .depth = 12,
123 .reg = EM28XX_OUTFMT_YUV411,
124 },
125 };
126
127 /* supported controls */
128 /* Common to all boards */
129 static struct v4l2_queryctrl ac97_qctrl[] = {
130 {
131 .id = V4L2_CID_AUDIO_VOLUME,
132 .type = V4L2_CTRL_TYPE_INTEGER,
133 .name = "Volume",
134 .minimum = 0x0,
135 .maximum = 0x1f,
136 .step = 0x1,
137 .default_value = 0x1f,
138 .flags = V4L2_CTRL_FLAG_SLIDER,
139 }, {
140 .id = V4L2_CID_AUDIO_MUTE,
141 .type = V4L2_CTRL_TYPE_BOOLEAN,
142 .name = "Mute",
143 .minimum = 0,
144 .maximum = 1,
145 .step = 1,
146 .default_value = 1,
147 .flags = 0,
148 }
149 };
150
151 /* ------------------------------------------------------------------
152 DMA and thread functions
153 ------------------------------------------------------------------*/
154
155 /*
156 * Announces that a buffer were filled and request the next
157 */
158 static inline void buffer_filled(struct em28xx *dev,
159 struct em28xx_dmaqueue *dma_q,
160 struct em28xx_buffer *buf)
161 {
162 /* Advice that buffer was filled */
163 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
164 buf->vb.state = VIDEOBUF_DONE;
165 buf->vb.field_count++;
166 do_gettimeofday(&buf->vb.ts);
167
168 dev->isoc_ctl.vid_buf = NULL;
169
170 list_del(&buf->vb.queue);
171 wake_up(&buf->vb.done);
172 }
173
174 static inline void vbi_buffer_filled(struct em28xx *dev,
175 struct em28xx_dmaqueue *dma_q,
176 struct em28xx_buffer *buf)
177 {
178 /* Advice that buffer was filled */
179 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
180
181 buf->vb.state = VIDEOBUF_DONE;
182 buf->vb.field_count++;
183 do_gettimeofday(&buf->vb.ts);
184
185 dev->isoc_ctl.vbi_buf = NULL;
186
187 list_del(&buf->vb.queue);
188 wake_up(&buf->vb.done);
189 }
190
191 /*
192 * Identify the buffer header type and properly handles
193 */
194 static void em28xx_copy_video(struct em28xx *dev,
195 struct em28xx_dmaqueue *dma_q,
196 struct em28xx_buffer *buf,
197 unsigned char *p,
198 unsigned char *outp, unsigned long len)
199 {
200 void *fieldstart, *startwrite, *startread;
201 int linesdone, currlinedone, offset, lencopy, remain;
202 int bytesperline = dev->width << 1;
203
204 if (dma_q->pos + len > buf->vb.size)
205 len = buf->vb.size - dma_q->pos;
206
207 startread = p;
208 remain = len;
209
210 if (dev->progressive)
211 fieldstart = outp;
212 else {
213 /* Interlaces two half frames */
214 if (buf->top_field)
215 fieldstart = outp;
216 else
217 fieldstart = outp + bytesperline;
218 }
219
220 linesdone = dma_q->pos / bytesperline;
221 currlinedone = dma_q->pos % bytesperline;
222
223 if (dev->progressive)
224 offset = linesdone * bytesperline + currlinedone;
225 else
226 offset = linesdone * bytesperline * 2 + currlinedone;
227
228 startwrite = fieldstart + offset;
229 lencopy = bytesperline - currlinedone;
230 lencopy = lencopy > remain ? remain : lencopy;
231
232 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
233 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
234 ((char *)startwrite + lencopy) -
235 ((char *)outp + buf->vb.size));
236 remain = (char *)outp + buf->vb.size - (char *)startwrite;
237 lencopy = remain;
238 }
239 if (lencopy <= 0)
240 return;
241 memcpy(startwrite, startread, lencopy);
242
243 remain -= lencopy;
244
245 while (remain > 0) {
246 startwrite += lencopy + bytesperline;
247 startread += lencopy;
248 if (bytesperline > remain)
249 lencopy = remain;
250 else
251 lencopy = bytesperline;
252
253 if ((char *)startwrite + lencopy > (char *)outp +
254 buf->vb.size) {
255 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
256 "(2)\n",
257 ((char *)startwrite + lencopy) -
258 ((char *)outp + buf->vb.size));
259 lencopy = remain = (char *)outp + buf->vb.size -
260 (char *)startwrite;
261 }
262 if (lencopy <= 0)
263 break;
264
265 memcpy(startwrite, startread, lencopy);
266
267 remain -= lencopy;
268 }
269
270 dma_q->pos += len;
271 }
272
273 static void em28xx_copy_vbi(struct em28xx *dev,
274 struct em28xx_dmaqueue *dma_q,
275 struct em28xx_buffer *buf,
276 unsigned char *p,
277 unsigned char *outp, unsigned long len)
278 {
279 void *startwrite, *startread;
280 int offset;
281 int bytesperline;
282
283 if (dev == NULL) {
284 em28xx_isocdbg("dev is null\n");
285 return;
286 }
287 bytesperline = dev->vbi_width;
288
289 if (dma_q == NULL) {
290 em28xx_isocdbg("dma_q is null\n");
291 return;
292 }
293 if (buf == NULL) {
294 return;
295 }
296 if (p == NULL) {
297 em28xx_isocdbg("p is null\n");
298 return;
299 }
300 if (outp == NULL) {
301 em28xx_isocdbg("outp is null\n");
302 return;
303 }
304
305 if (dma_q->pos + len > buf->vb.size)
306 len = buf->vb.size - dma_q->pos;
307
308 startread = p;
309
310 startwrite = outp + dma_q->pos;
311 offset = dma_q->pos;
312
313 /* Make sure the bottom field populates the second half of the frame */
314 if (buf->top_field == 0) {
315 startwrite += bytesperline * dev->vbi_height;
316 offset += bytesperline * dev->vbi_height;
317 }
318
319 memcpy(startwrite, startread, len);
320 dma_q->pos += len;
321 }
322
323 static inline void print_err_status(struct em28xx *dev,
324 int packet, int status)
325 {
326 char *errmsg = "Unknown";
327
328 switch (status) {
329 case -ENOENT:
330 errmsg = "unlinked synchronuously";
331 break;
332 case -ECONNRESET:
333 errmsg = "unlinked asynchronuously";
334 break;
335 case -ENOSR:
336 errmsg = "Buffer error (overrun)";
337 break;
338 case -EPIPE:
339 errmsg = "Stalled (device not responding)";
340 break;
341 case -EOVERFLOW:
342 errmsg = "Babble (bad cable?)";
343 break;
344 case -EPROTO:
345 errmsg = "Bit-stuff error (bad cable?)";
346 break;
347 case -EILSEQ:
348 errmsg = "CRC/Timeout (could be anything)";
349 break;
350 case -ETIME:
351 errmsg = "Device does not respond";
352 break;
353 }
354 if (packet < 0) {
355 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
356 } else {
357 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
358 packet, status, errmsg);
359 }
360 }
361
362 /*
363 * video-buf generic routine to get the next available buffer
364 */
365 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
366 struct em28xx_buffer **buf)
367 {
368 struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
369 char *outp;
370
371 if (list_empty(&dma_q->active)) {
372 em28xx_isocdbg("No active queue to serve\n");
373 dev->isoc_ctl.vid_buf = NULL;
374 *buf = NULL;
375 return;
376 }
377
378 /* Get the next buffer */
379 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
380
381 /* Cleans up buffer - Useful for testing for frame/URB loss */
382 outp = videobuf_to_vmalloc(&(*buf)->vb);
383 memset(outp, 0, (*buf)->vb.size);
384
385 dev->isoc_ctl.vid_buf = *buf;
386
387 return;
388 }
389
390 /*
391 * video-buf generic routine to get the next available VBI buffer
392 */
393 static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q,
394 struct em28xx_buffer **buf)
395 {
396 struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq);
397 char *outp;
398
399 if (list_empty(&dma_q->active)) {
400 em28xx_isocdbg("No active queue to serve\n");
401 dev->isoc_ctl.vbi_buf = NULL;
402 *buf = NULL;
403 return;
404 }
405
406 /* Get the next buffer */
407 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
408 /* Cleans up buffer - Useful for testing for frame/URB loss */
409 outp = videobuf_to_vmalloc(&(*buf)->vb);
410 memset(outp, 0x00, (*buf)->vb.size);
411
412 dev->isoc_ctl.vbi_buf = *buf;
413
414 return;
415 }
416
417 /*
418 * Controls the isoc copy of each urb packet
419 */
420 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
421 {
422 struct em28xx_buffer *buf;
423 struct em28xx_dmaqueue *dma_q = &dev->vidq;
424 unsigned char *outp = NULL;
425 int i, len = 0, rc = 1;
426 unsigned char *p;
427
428 if (!dev)
429 return 0;
430
431 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
432 return 0;
433
434 if (urb->status < 0) {
435 print_err_status(dev, -1, urb->status);
436 if (urb->status == -ENOENT)
437 return 0;
438 }
439
440 buf = dev->isoc_ctl.vid_buf;
441 if (buf != NULL)
442 outp = videobuf_to_vmalloc(&buf->vb);
443
444 for (i = 0; i < urb->number_of_packets; i++) {
445 int status = urb->iso_frame_desc[i].status;
446
447 if (status < 0) {
448 print_err_status(dev, i, status);
449 if (urb->iso_frame_desc[i].status != -EPROTO)
450 continue;
451 }
452
453 len = urb->iso_frame_desc[i].actual_length - 4;
454
455 if (urb->iso_frame_desc[i].actual_length <= 0) {
456 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
457 continue;
458 }
459 if (urb->iso_frame_desc[i].actual_length >
460 dev->max_pkt_size) {
461 em28xx_isocdbg("packet bigger than packet size");
462 continue;
463 }
464
465 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
466
467 /* FIXME: incomplete buffer checks where removed to make
468 logic simpler. Impacts of those changes should be evaluated
469 */
470 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
471 em28xx_isocdbg("VBI HEADER!!!\n");
472 /* FIXME: Should add vbi copy */
473 continue;
474 }
475 if (p[0] == 0x22 && p[1] == 0x5a) {
476 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
477 len, (p[2] & 1) ? "odd" : "even");
478
479 if (dev->progressive || !(p[2] & 1)) {
480 if (buf != NULL)
481 buffer_filled(dev, dma_q, buf);
482 get_next_buf(dma_q, &buf);
483 if (buf == NULL)
484 outp = NULL;
485 else
486 outp = videobuf_to_vmalloc(&buf->vb);
487 }
488
489 if (buf != NULL) {
490 if (p[2] & 1)
491 buf->top_field = 0;
492 else
493 buf->top_field = 1;
494 }
495
496 dma_q->pos = 0;
497 }
498 if (buf != NULL) {
499 if (p[0] != 0x88 && p[0] != 0x22) {
500 em28xx_isocdbg("frame is not complete\n");
501 len += 4;
502 } else {
503 p += 4;
504 }
505 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
506 }
507 }
508 return rc;
509 }
510
511 /* Version of isoc handler that takes into account a mixture of video and
512 VBI data */
513 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
514 {
515 struct em28xx_buffer *buf, *vbi_buf;
516 struct em28xx_dmaqueue *dma_q = &dev->vidq;
517 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
518 unsigned char *outp = NULL;
519 unsigned char *vbioutp = NULL;
520 int i, len = 0, rc = 1;
521 unsigned char *p;
522 int vbi_size;
523
524 if (!dev)
525 return 0;
526
527 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
528 return 0;
529
530 if (urb->status < 0) {
531 print_err_status(dev, -1, urb->status);
532 if (urb->status == -ENOENT)
533 return 0;
534 }
535
536 buf = dev->isoc_ctl.vid_buf;
537 if (buf != NULL)
538 outp = videobuf_to_vmalloc(&buf->vb);
539
540 vbi_buf = dev->isoc_ctl.vbi_buf;
541 if (vbi_buf != NULL)
542 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
543
544 for (i = 0; i < urb->number_of_packets; i++) {
545 int status = urb->iso_frame_desc[i].status;
546
547 if (status < 0) {
548 print_err_status(dev, i, status);
549 if (urb->iso_frame_desc[i].status != -EPROTO)
550 continue;
551 }
552
553 len = urb->iso_frame_desc[i].actual_length;
554 if (urb->iso_frame_desc[i].actual_length <= 0) {
555 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
556 continue;
557 }
558 if (urb->iso_frame_desc[i].actual_length >
559 dev->max_pkt_size) {
560 em28xx_isocdbg("packet bigger than packet size");
561 continue;
562 }
563
564 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
565
566 /* capture type 0 = vbi start
567 capture type 1 = video start
568 capture type 2 = video in progress */
569 if (p[0] == 0x33 && p[1] == 0x95) {
570 dev->capture_type = 0;
571 dev->vbi_read = 0;
572 em28xx_isocdbg("VBI START HEADER!!!\n");
573 dev->cur_field = p[2];
574 p += 4;
575 len -= 4;
576 } else if (p[0] == 0x88 && p[1] == 0x88 &&
577 p[2] == 0x88 && p[3] == 0x88) {
578 /* continuation */
579 p += 4;
580 len -= 4;
581 } else if (p[0] == 0x22 && p[1] == 0x5a) {
582 /* start video */
583 p += 4;
584 len -= 4;
585 }
586
587 vbi_size = dev->vbi_width * dev->vbi_height;
588
589 if (dev->capture_type == 0) {
590 if (dev->vbi_read >= vbi_size) {
591 /* We've already read all the VBI data, so
592 treat the rest as video */
593 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
594 } else if ((dev->vbi_read + len) < vbi_size) {
595 /* This entire frame is VBI data */
596 if (dev->vbi_read == 0 &&
597 (!(dev->cur_field & 1))) {
598 /* Brand new frame */
599 if (vbi_buf != NULL)
600 vbi_buffer_filled(dev,
601 vbi_dma_q,
602 vbi_buf);
603 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
604 if (vbi_buf == NULL)
605 vbioutp = NULL;
606 else
607 vbioutp = videobuf_to_vmalloc(
608 &vbi_buf->vb);
609 }
610
611 if (dev->vbi_read == 0) {
612 vbi_dma_q->pos = 0;
613 if (vbi_buf != NULL) {
614 if (dev->cur_field & 1)
615 vbi_buf->top_field = 0;
616 else
617 vbi_buf->top_field = 1;
618 }
619 }
620
621 dev->vbi_read += len;
622 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
623 vbioutp, len);
624 } else {
625 /* Some of this frame is VBI data and some is
626 video data */
627 int vbi_data_len = vbi_size - dev->vbi_read;
628 dev->vbi_read += vbi_data_len;
629 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
630 vbioutp, vbi_data_len);
631 dev->capture_type = 1;
632 p += vbi_data_len;
633 len -= vbi_data_len;
634 }
635 }
636
637 if (dev->capture_type == 1) {
638 dev->capture_type = 2;
639 if (dev->progressive || !(dev->cur_field & 1)) {
640 if (buf != NULL)
641 buffer_filled(dev, dma_q, buf);
642 get_next_buf(dma_q, &buf);
643 if (buf == NULL)
644 outp = NULL;
645 else
646 outp = videobuf_to_vmalloc(&buf->vb);
647 }
648 if (buf != NULL) {
649 if (dev->cur_field & 1)
650 buf->top_field = 0;
651 else
652 buf->top_field = 1;
653 }
654
655 dma_q->pos = 0;
656 }
657
658 if (buf != NULL && dev->capture_type == 2) {
659 if (len >= 4 && p[0] == 0x88 && p[1] == 0x88 &&
660 p[2] == 0x88 && p[3] == 0x88) {
661 p += 4;
662 len -= 4;
663 }
664 if (len >= 4 && p[0] == 0x22 && p[1] == 0x5a) {
665 em28xx_isocdbg("Video frame %d, len=%i, %s\n",
666 p[2], len, (p[2] & 1) ?
667 "odd" : "even");
668 p += 4;
669 len -= 4;
670 }
671
672 if (len > 0)
673 em28xx_copy_video(dev, dma_q, buf, p, outp,
674 len);
675 }
676 }
677 return rc;
678 }
679
680
681 /* ------------------------------------------------------------------
682 Videobuf operations
683 ------------------------------------------------------------------*/
684
685 static int
686 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
687 {
688 struct em28xx_fh *fh = vq->priv_data;
689 struct em28xx *dev = fh->dev;
690 struct v4l2_frequency f;
691
692 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
693 >> 3;
694
695 if (0 == *count)
696 *count = EM28XX_DEF_BUF;
697
698 if (*count < EM28XX_MIN_BUF)
699 *count = EM28XX_MIN_BUF;
700
701 /* Ask tuner to go to analog or radio mode */
702 memset(&f, 0, sizeof(f));
703 f.frequency = dev->ctl_freq;
704 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
705
706 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
707
708 return 0;
709 }
710
711 /* This is called *without* dev->slock held; please keep it that way */
712 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
713 {
714 struct em28xx_fh *fh = vq->priv_data;
715 struct em28xx *dev = fh->dev;
716 unsigned long flags = 0;
717 if (in_interrupt())
718 BUG();
719
720 /* We used to wait for the buffer to finish here, but this didn't work
721 because, as we were keeping the state as VIDEOBUF_QUEUED,
722 videobuf_queue_cancel marked it as finished for us.
723 (Also, it could wedge forever if the hardware was misconfigured.)
724
725 This should be safe; by the time we get here, the buffer isn't
726 queued anymore. If we ever start marking the buffers as
727 VIDEOBUF_ACTIVE, it won't be, though.
728 */
729 spin_lock_irqsave(&dev->slock, flags);
730 if (dev->isoc_ctl.vid_buf == buf)
731 dev->isoc_ctl.vid_buf = NULL;
732 spin_unlock_irqrestore(&dev->slock, flags);
733
734 videobuf_vmalloc_free(&buf->vb);
735 buf->vb.state = VIDEOBUF_NEEDS_INIT;
736 }
737
738 static int
739 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
740 enum v4l2_field field)
741 {
742 struct em28xx_fh *fh = vq->priv_data;
743 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
744 struct em28xx *dev = fh->dev;
745 int rc = 0, urb_init = 0;
746
747 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
748 + 7) >> 3;
749
750 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
751 return -EINVAL;
752
753 buf->vb.width = dev->width;
754 buf->vb.height = dev->height;
755 buf->vb.field = field;
756
757 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
758 rc = videobuf_iolock(vq, &buf->vb, NULL);
759 if (rc < 0)
760 goto fail;
761 }
762
763 if (!dev->isoc_ctl.num_bufs)
764 urb_init = 1;
765
766 if (urb_init) {
767 if (em28xx_vbi_supported(dev) == 1)
768 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
769 EM28XX_NUM_BUFS,
770 dev->max_pkt_size,
771 em28xx_isoc_copy_vbi);
772 else
773 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
774 EM28XX_NUM_BUFS,
775 dev->max_pkt_size,
776 em28xx_isoc_copy);
777 if (rc < 0)
778 goto fail;
779 }
780
781 buf->vb.state = VIDEOBUF_PREPARED;
782 return 0;
783
784 fail:
785 free_buffer(vq, buf);
786 return rc;
787 }
788
789 static void
790 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
791 {
792 struct em28xx_buffer *buf = container_of(vb,
793 struct em28xx_buffer,
794 vb);
795 struct em28xx_fh *fh = vq->priv_data;
796 struct em28xx *dev = fh->dev;
797 struct em28xx_dmaqueue *vidq = &dev->vidq;
798
799 buf->vb.state = VIDEOBUF_QUEUED;
800 list_add_tail(&buf->vb.queue, &vidq->active);
801
802 }
803
804 static void buffer_release(struct videobuf_queue *vq,
805 struct videobuf_buffer *vb)
806 {
807 struct em28xx_buffer *buf = container_of(vb,
808 struct em28xx_buffer,
809 vb);
810 struct em28xx_fh *fh = vq->priv_data;
811 struct em28xx *dev = (struct em28xx *)fh->dev;
812
813 em28xx_isocdbg("em28xx: called buffer_release\n");
814
815 free_buffer(vq, buf);
816 }
817
818 static struct videobuf_queue_ops em28xx_video_qops = {
819 .buf_setup = buffer_setup,
820 .buf_prepare = buffer_prepare,
821 .buf_queue = buffer_queue,
822 .buf_release = buffer_release,
823 };
824
825 /********************* v4l2 interface **************************************/
826
827 static void video_mux(struct em28xx *dev, int index)
828 {
829 dev->ctl_input = index;
830 dev->ctl_ainput = INPUT(index)->amux;
831 dev->ctl_aoutput = INPUT(index)->aout;
832
833 if (!dev->ctl_aoutput)
834 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
835
836 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
837 INPUT(index)->vmux, 0, 0);
838
839 if (dev->board.has_msp34xx) {
840 if (dev->i2s_speed) {
841 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
842 s_i2s_clock_freq, dev->i2s_speed);
843 }
844 /* Note: this is msp3400 specific */
845 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
846 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
847 }
848
849 if (dev->board.adecoder != EM28XX_NOADECODER) {
850 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
851 dev->ctl_ainput, dev->ctl_aoutput, 0);
852 }
853
854 em28xx_audio_analog_set(dev);
855 }
856
857 /* Usage lock check functions */
858 static int res_get(struct em28xx_fh *fh, unsigned int bit)
859 {
860 struct em28xx *dev = fh->dev;
861
862 if (fh->resources & bit)
863 /* have it already allocated */
864 return 1;
865
866 /* is it free? */
867 if (dev->resources & bit) {
868 /* no, someone else uses it */
869 return 0;
870 }
871 /* it's free, grab it */
872 fh->resources |= bit;
873 dev->resources |= bit;
874 em28xx_videodbg("res: get %d\n", bit);
875 return 1;
876 }
877
878 static int res_check(struct em28xx_fh *fh, unsigned int bit)
879 {
880 return fh->resources & bit;
881 }
882
883 static int res_locked(struct em28xx *dev, unsigned int bit)
884 {
885 return dev->resources & bit;
886 }
887
888 static void res_free(struct em28xx_fh *fh, unsigned int bits)
889 {
890 struct em28xx *dev = fh->dev;
891
892 BUG_ON((fh->resources & bits) != bits);
893
894 fh->resources &= ~bits;
895 dev->resources &= ~bits;
896 em28xx_videodbg("res: put %d\n", bits);
897 }
898
899 static int get_ressource(struct em28xx_fh *fh)
900 {
901 switch (fh->type) {
902 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
903 return EM28XX_RESOURCE_VIDEO;
904 case V4L2_BUF_TYPE_VBI_CAPTURE:
905 return EM28XX_RESOURCE_VBI;
906 default:
907 BUG();
908 return 0;
909 }
910 }
911
912 /*
913 * ac97_queryctrl()
914 * return the ac97 supported controls
915 */
916 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
917 {
918 int i;
919
920 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
921 if (qc->id && qc->id == ac97_qctrl[i].id) {
922 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
923 return 0;
924 }
925 }
926
927 /* Control is not ac97 related */
928 return 1;
929 }
930
931 /*
932 * ac97_get_ctrl()
933 * return the current values for ac97 mute and volume
934 */
935 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
936 {
937 switch (ctrl->id) {
938 case V4L2_CID_AUDIO_MUTE:
939 ctrl->value = dev->mute;
940 return 0;
941 case V4L2_CID_AUDIO_VOLUME:
942 ctrl->value = dev->volume;
943 return 0;
944 default:
945 /* Control is not ac97 related */
946 return 1;
947 }
948 }
949
950 /*
951 * ac97_set_ctrl()
952 * set values for ac97 mute and volume
953 */
954 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
955 {
956 int i;
957
958 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
959 if (ctrl->id == ac97_qctrl[i].id)
960 goto handle;
961
962 /* Announce that hasn't handle it */
963 return 1;
964
965 handle:
966 if (ctrl->value < ac97_qctrl[i].minimum ||
967 ctrl->value > ac97_qctrl[i].maximum)
968 return -ERANGE;
969
970 switch (ctrl->id) {
971 case V4L2_CID_AUDIO_MUTE:
972 dev->mute = ctrl->value;
973 break;
974 case V4L2_CID_AUDIO_VOLUME:
975 dev->volume = ctrl->value;
976 break;
977 }
978
979 return em28xx_audio_analog_set(dev);
980 }
981
982 static int check_dev(struct em28xx *dev)
983 {
984 if (dev->state & DEV_DISCONNECTED) {
985 em28xx_errdev("v4l2 ioctl: device not present\n");
986 return -ENODEV;
987 }
988
989 if (dev->state & DEV_MISCONFIGURED) {
990 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
991 "close and open it again\n");
992 return -EIO;
993 }
994 return 0;
995 }
996
997 static void get_scale(struct em28xx *dev,
998 unsigned int width, unsigned int height,
999 unsigned int *hscale, unsigned int *vscale)
1000 {
1001 unsigned int maxw = norm_maxw(dev);
1002 unsigned int maxh = norm_maxh(dev);
1003
1004 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
1005 if (*hscale >= 0x4000)
1006 *hscale = 0x3fff;
1007
1008 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
1009 if (*vscale >= 0x4000)
1010 *vscale = 0x3fff;
1011 }
1012
1013 /* ------------------------------------------------------------------
1014 IOCTL vidioc handling
1015 ------------------------------------------------------------------*/
1016
1017 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1018 struct v4l2_format *f)
1019 {
1020 struct em28xx_fh *fh = priv;
1021 struct em28xx *dev = fh->dev;
1022
1023 f->fmt.pix.width = dev->width;
1024 f->fmt.pix.height = dev->height;
1025 f->fmt.pix.pixelformat = dev->format->fourcc;
1026 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1027 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
1028 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1029
1030 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1031 if (dev->progressive)
1032 f->fmt.pix.field = V4L2_FIELD_NONE;
1033 else
1034 f->fmt.pix.field = dev->interlaced ?
1035 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1036 return 0;
1037 }
1038
1039 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1040 {
1041 unsigned int i;
1042
1043 for (i = 0; i < ARRAY_SIZE(format); i++)
1044 if (format[i].fourcc == fourcc)
1045 return &format[i];
1046
1047 return NULL;
1048 }
1049
1050 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1051 struct v4l2_format *f)
1052 {
1053 struct em28xx_fh *fh = priv;
1054 struct em28xx *dev = fh->dev;
1055 unsigned int width = f->fmt.pix.width;
1056 unsigned int height = f->fmt.pix.height;
1057 unsigned int maxw = norm_maxw(dev);
1058 unsigned int maxh = norm_maxh(dev);
1059 unsigned int hscale, vscale;
1060 struct em28xx_fmt *fmt;
1061
1062 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1063 if (!fmt) {
1064 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1065 f->fmt.pix.pixelformat);
1066 return -EINVAL;
1067 }
1068
1069 if (dev->board.is_em2800) {
1070 /* the em2800 can only scale down to 50% */
1071 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1072 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1073 } else {
1074 /* width must even because of the YUYV format
1075 height must be even because of interlacing */
1076 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1077 1, 0);
1078 }
1079
1080 get_scale(dev, width, height, &hscale, &vscale);
1081
1082 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1083 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1084
1085 f->fmt.pix.width = width;
1086 f->fmt.pix.height = height;
1087 f->fmt.pix.pixelformat = fmt->fourcc;
1088 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1089 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1090 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1091 if (dev->progressive)
1092 f->fmt.pix.field = V4L2_FIELD_NONE;
1093 else
1094 f->fmt.pix.field = dev->interlaced ?
1095 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1096
1097 return 0;
1098 }
1099
1100 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1101 unsigned width, unsigned height)
1102 {
1103 struct em28xx_fmt *fmt;
1104
1105 fmt = format_by_fourcc(fourcc);
1106 if (!fmt)
1107 return -EINVAL;
1108
1109 dev->format = fmt;
1110 dev->width = width;
1111 dev->height = height;
1112
1113 /* set new image size */
1114 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1115
1116 em28xx_set_alternate(dev);
1117 em28xx_resolution_set(dev);
1118
1119 return 0;
1120 }
1121
1122 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1123 struct v4l2_format *f)
1124 {
1125 struct em28xx_fh *fh = priv;
1126 struct em28xx *dev = fh->dev;
1127 int rc;
1128
1129 rc = check_dev(dev);
1130 if (rc < 0)
1131 return rc;
1132
1133 vidioc_try_fmt_vid_cap(file, priv, f);
1134
1135 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1136 em28xx_errdev("%s queue busy\n", __func__);
1137 return -EBUSY;
1138 }
1139
1140 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1141 f->fmt.pix.width, f->fmt.pix.height);
1142 }
1143
1144 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1145 {
1146 struct em28xx_fh *fh = priv;
1147 struct em28xx *dev = fh->dev;
1148 int rc;
1149
1150 rc = check_dev(dev);
1151 if (rc < 0)
1152 return rc;
1153
1154 *norm = dev->norm;
1155
1156 return 0;
1157 }
1158
1159 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1160 {
1161 struct em28xx_fh *fh = priv;
1162 struct em28xx *dev = fh->dev;
1163 struct v4l2_format f;
1164 int rc;
1165
1166 rc = check_dev(dev);
1167 if (rc < 0)
1168 return rc;
1169
1170 dev->norm = *norm;
1171
1172 /* Adjusts width/height, if needed */
1173 f.fmt.pix.width = dev->width;
1174 f.fmt.pix.height = dev->height;
1175 vidioc_try_fmt_vid_cap(file, priv, &f);
1176
1177 /* set new image size */
1178 dev->width = f.fmt.pix.width;
1179 dev->height = f.fmt.pix.height;
1180 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1181
1182 em28xx_resolution_set(dev);
1183 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1184
1185 return 0;
1186 }
1187
1188 static int vidioc_g_parm(struct file *file, void *priv,
1189 struct v4l2_streamparm *p)
1190 {
1191 struct em28xx_fh *fh = priv;
1192 struct em28xx *dev = fh->dev;
1193 int rc = 0;
1194
1195 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1196 return -EINVAL;
1197
1198 if (dev->board.is_webcam)
1199 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1200 video, g_parm, p);
1201 else
1202 v4l2_video_std_frame_period(dev->norm,
1203 &p->parm.capture.timeperframe);
1204
1205 return rc;
1206 }
1207
1208 static int vidioc_s_parm(struct file *file, void *priv,
1209 struct v4l2_streamparm *p)
1210 {
1211 struct em28xx_fh *fh = priv;
1212 struct em28xx *dev = fh->dev;
1213
1214 if (!dev->board.is_webcam)
1215 return -EINVAL;
1216
1217 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1218 return -EINVAL;
1219
1220 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1221 }
1222
1223 static const char *iname[] = {
1224 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1225 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1226 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1227 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1228 [EM28XX_VMUX_SVIDEO] = "S-Video",
1229 [EM28XX_VMUX_TELEVISION] = "Television",
1230 [EM28XX_VMUX_CABLE] = "Cable TV",
1231 [EM28XX_VMUX_DVB] = "DVB",
1232 [EM28XX_VMUX_DEBUG] = "for debug only",
1233 };
1234
1235 static int vidioc_enum_input(struct file *file, void *priv,
1236 struct v4l2_input *i)
1237 {
1238 struct em28xx_fh *fh = priv;
1239 struct em28xx *dev = fh->dev;
1240 unsigned int n;
1241
1242 n = i->index;
1243 if (n >= MAX_EM28XX_INPUT)
1244 return -EINVAL;
1245 if (0 == INPUT(n)->type)
1246 return -EINVAL;
1247
1248 i->index = n;
1249 i->type = V4L2_INPUT_TYPE_CAMERA;
1250
1251 strcpy(i->name, iname[INPUT(n)->type]);
1252
1253 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1254 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1255 i->type = V4L2_INPUT_TYPE_TUNER;
1256
1257 i->std = dev->vdev->tvnorms;
1258
1259 return 0;
1260 }
1261
1262 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1263 {
1264 struct em28xx_fh *fh = priv;
1265 struct em28xx *dev = fh->dev;
1266
1267 *i = dev->ctl_input;
1268
1269 return 0;
1270 }
1271
1272 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1273 {
1274 struct em28xx_fh *fh = priv;
1275 struct em28xx *dev = fh->dev;
1276 int rc;
1277
1278 rc = check_dev(dev);
1279 if (rc < 0)
1280 return rc;
1281
1282 if (i >= MAX_EM28XX_INPUT)
1283 return -EINVAL;
1284 if (0 == INPUT(i)->type)
1285 return -EINVAL;
1286
1287 dev->ctl_input = i;
1288
1289 video_mux(dev, dev->ctl_input);
1290 return 0;
1291 }
1292
1293 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1294 {
1295 struct em28xx_fh *fh = priv;
1296 struct em28xx *dev = fh->dev;
1297
1298 if (!dev->audio_mode.has_audio)
1299 return -EINVAL;
1300
1301 switch (a->index) {
1302 case EM28XX_AMUX_VIDEO:
1303 strcpy(a->name, "Television");
1304 break;
1305 case EM28XX_AMUX_LINE_IN:
1306 strcpy(a->name, "Line In");
1307 break;
1308 case EM28XX_AMUX_VIDEO2:
1309 strcpy(a->name, "Television alt");
1310 break;
1311 case EM28XX_AMUX_PHONE:
1312 strcpy(a->name, "Phone");
1313 break;
1314 case EM28XX_AMUX_MIC:
1315 strcpy(a->name, "Mic");
1316 break;
1317 case EM28XX_AMUX_CD:
1318 strcpy(a->name, "CD");
1319 break;
1320 case EM28XX_AMUX_AUX:
1321 strcpy(a->name, "Aux");
1322 break;
1323 case EM28XX_AMUX_PCM_OUT:
1324 strcpy(a->name, "PCM");
1325 break;
1326 default:
1327 return -EINVAL;
1328 }
1329
1330 a->index = dev->ctl_ainput;
1331 a->capability = V4L2_AUDCAP_STEREO;
1332
1333 return 0;
1334 }
1335
1336 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1337 {
1338 struct em28xx_fh *fh = priv;
1339 struct em28xx *dev = fh->dev;
1340
1341
1342 if (!dev->audio_mode.has_audio)
1343 return -EINVAL;
1344
1345 if (a->index >= MAX_EM28XX_INPUT)
1346 return -EINVAL;
1347 if (0 == INPUT(a->index)->type)
1348 return -EINVAL;
1349
1350 dev->ctl_ainput = INPUT(a->index)->amux;
1351 dev->ctl_aoutput = INPUT(a->index)->aout;
1352
1353 if (!dev->ctl_aoutput)
1354 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1355
1356 return 0;
1357 }
1358
1359 static int vidioc_queryctrl(struct file *file, void *priv,
1360 struct v4l2_queryctrl *qc)
1361 {
1362 struct em28xx_fh *fh = priv;
1363 struct em28xx *dev = fh->dev;
1364 int id = qc->id;
1365 int rc;
1366
1367 rc = check_dev(dev);
1368 if (rc < 0)
1369 return rc;
1370
1371 memset(qc, 0, sizeof(*qc));
1372
1373 qc->id = id;
1374
1375 /* enumerate AC97 controls */
1376 if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1377 rc = ac97_queryctrl(qc);
1378 if (!rc)
1379 return 0;
1380 }
1381
1382 /* enumerate V4L2 device controls */
1383 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1384
1385 if (qc->type)
1386 return 0;
1387 else
1388 return -EINVAL;
1389 }
1390
1391 /*
1392 * FIXME: This is an indirect way to check if a control exists at a
1393 * subdev. Instead of that hack, maybe the better would be to change all
1394 * subdevs to return -ENOIOCTLCMD, if an ioctl is not supported.
1395 */
1396 static int check_subdev_ctrl(struct em28xx *dev, int id)
1397 {
1398 struct v4l2_queryctrl qc;
1399
1400 memset(&qc, 0, sizeof(qc));
1401 qc.id = id;
1402
1403 /* enumerate V4L2 device controls */
1404 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, &qc);
1405
1406 if (qc.type)
1407 return 0;
1408 else
1409 return -EINVAL;
1410 }
1411
1412 static int vidioc_g_ctrl(struct file *file, void *priv,
1413 struct v4l2_control *ctrl)
1414 {
1415 struct em28xx_fh *fh = priv;
1416 struct em28xx *dev = fh->dev;
1417 int rc;
1418
1419 rc = check_dev(dev);
1420 if (rc < 0)
1421 return rc;
1422 rc = 0;
1423
1424 /* Set an AC97 control */
1425 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1426 rc = ac97_get_ctrl(dev, ctrl);
1427 else
1428 rc = 1;
1429
1430 /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1431 if (rc == 1) {
1432 if (check_subdev_ctrl(dev, ctrl->id))
1433 return -EINVAL;
1434
1435 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1436 rc = 0;
1437 }
1438
1439 return rc;
1440 }
1441
1442 static int vidioc_s_ctrl(struct file *file, void *priv,
1443 struct v4l2_control *ctrl)
1444 {
1445 struct em28xx_fh *fh = priv;
1446 struct em28xx *dev = fh->dev;
1447 int rc;
1448
1449 rc = check_dev(dev);
1450 if (rc < 0)
1451 return rc;
1452
1453 /* Set an AC97 control */
1454 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1455 rc = ac97_set_ctrl(dev, ctrl);
1456 else
1457 rc = 1;
1458
1459 /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1460 if (rc == 1) {
1461 rc = check_subdev_ctrl(dev, ctrl->id);
1462 if (!rc)
1463 v4l2_device_call_all(&dev->v4l2_dev, 0,
1464 core, s_ctrl, ctrl);
1465 /*
1466 * In the case of non-AC97 volume controls, we still need
1467 * to do some setups at em28xx, in order to mute/unmute
1468 * and to adjust audio volume. However, the value ranges
1469 * should be checked by the corresponding V4L subdriver.
1470 */
1471 switch (ctrl->id) {
1472 case V4L2_CID_AUDIO_MUTE:
1473 dev->mute = ctrl->value;
1474 rc = em28xx_audio_analog_set(dev);
1475 break;
1476 case V4L2_CID_AUDIO_VOLUME:
1477 dev->volume = ctrl->value;
1478 rc = em28xx_audio_analog_set(dev);
1479 }
1480 }
1481 return (rc < 0) ? rc : 0;
1482 }
1483
1484 static int vidioc_g_tuner(struct file *file, void *priv,
1485 struct v4l2_tuner *t)
1486 {
1487 struct em28xx_fh *fh = priv;
1488 struct em28xx *dev = fh->dev;
1489 int rc;
1490
1491 rc = check_dev(dev);
1492 if (rc < 0)
1493 return rc;
1494
1495 if (0 != t->index)
1496 return -EINVAL;
1497
1498 strcpy(t->name, "Tuner");
1499 t->type = V4L2_TUNER_ANALOG_TV;
1500
1501 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1502 return 0;
1503 }
1504
1505 static int vidioc_s_tuner(struct file *file, void *priv,
1506 struct v4l2_tuner *t)
1507 {
1508 struct em28xx_fh *fh = priv;
1509 struct em28xx *dev = fh->dev;
1510 int rc;
1511
1512 rc = check_dev(dev);
1513 if (rc < 0)
1514 return rc;
1515
1516 if (0 != t->index)
1517 return -EINVAL;
1518
1519 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1520 return 0;
1521 }
1522
1523 static int vidioc_g_frequency(struct file *file, void *priv,
1524 struct v4l2_frequency *f)
1525 {
1526 struct em28xx_fh *fh = priv;
1527 struct em28xx *dev = fh->dev;
1528
1529 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1530 f->frequency = dev->ctl_freq;
1531 return 0;
1532 }
1533
1534 static int vidioc_s_frequency(struct file *file, void *priv,
1535 struct v4l2_frequency *f)
1536 {
1537 struct em28xx_fh *fh = priv;
1538 struct em28xx *dev = fh->dev;
1539 int rc;
1540
1541 rc = check_dev(dev);
1542 if (rc < 0)
1543 return rc;
1544
1545 if (0 != f->tuner)
1546 return -EINVAL;
1547
1548 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1549 return -EINVAL;
1550 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1551 return -EINVAL;
1552
1553 dev->ctl_freq = f->frequency;
1554 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1555
1556 return 0;
1557 }
1558
1559 #ifdef CONFIG_VIDEO_ADV_DEBUG
1560 static int em28xx_reg_len(int reg)
1561 {
1562 switch (reg) {
1563 case EM28XX_R40_AC97LSB:
1564 case EM28XX_R30_HSCALELOW:
1565 case EM28XX_R32_VSCALELOW:
1566 return 2;
1567 default:
1568 return 1;
1569 }
1570 }
1571
1572 static int vidioc_g_chip_ident(struct file *file, void *priv,
1573 struct v4l2_dbg_chip_ident *chip)
1574 {
1575 struct em28xx_fh *fh = priv;
1576 struct em28xx *dev = fh->dev;
1577
1578 chip->ident = V4L2_IDENT_NONE;
1579 chip->revision = 0;
1580
1581 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1582
1583 return 0;
1584 }
1585
1586
1587 static int vidioc_g_register(struct file *file, void *priv,
1588 struct v4l2_dbg_register *reg)
1589 {
1590 struct em28xx_fh *fh = priv;
1591 struct em28xx *dev = fh->dev;
1592 int ret;
1593
1594 switch (reg->match.type) {
1595 case V4L2_CHIP_MATCH_AC97:
1596 ret = em28xx_read_ac97(dev, reg->reg);
1597 if (ret < 0)
1598 return ret;
1599
1600 reg->val = ret;
1601 reg->size = 1;
1602 return 0;
1603 case V4L2_CHIP_MATCH_I2C_DRIVER:
1604 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1605 return 0;
1606 case V4L2_CHIP_MATCH_I2C_ADDR:
1607 /* TODO: is this correct? */
1608 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1609 return 0;
1610 default:
1611 if (!v4l2_chip_match_host(&reg->match))
1612 return -EINVAL;
1613 }
1614
1615 /* Match host */
1616 reg->size = em28xx_reg_len(reg->reg);
1617 if (reg->size == 1) {
1618 ret = em28xx_read_reg(dev, reg->reg);
1619
1620 if (ret < 0)
1621 return ret;
1622
1623 reg->val = ret;
1624 } else {
1625 __le16 val = 0;
1626 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1627 reg->reg, (char *)&val, 2);
1628 if (ret < 0)
1629 return ret;
1630
1631 reg->val = le16_to_cpu(val);
1632 }
1633
1634 return 0;
1635 }
1636
1637 static int vidioc_s_register(struct file *file, void *priv,
1638 struct v4l2_dbg_register *reg)
1639 {
1640 struct em28xx_fh *fh = priv;
1641 struct em28xx *dev = fh->dev;
1642 __le16 buf;
1643
1644 switch (reg->match.type) {
1645 case V4L2_CHIP_MATCH_AC97:
1646 return em28xx_write_ac97(dev, reg->reg, reg->val);
1647 case V4L2_CHIP_MATCH_I2C_DRIVER:
1648 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1649 return 0;
1650 case V4L2_CHIP_MATCH_I2C_ADDR:
1651 /* TODO: is this correct? */
1652 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1653 return 0;
1654 default:
1655 if (!v4l2_chip_match_host(&reg->match))
1656 return -EINVAL;
1657 }
1658
1659 /* Match host */
1660 buf = cpu_to_le16(reg->val);
1661
1662 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1663 em28xx_reg_len(reg->reg));
1664 }
1665 #endif
1666
1667
1668 static int vidioc_cropcap(struct file *file, void *priv,
1669 struct v4l2_cropcap *cc)
1670 {
1671 struct em28xx_fh *fh = priv;
1672 struct em28xx *dev = fh->dev;
1673
1674 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1675 return -EINVAL;
1676
1677 cc->bounds.left = 0;
1678 cc->bounds.top = 0;
1679 cc->bounds.width = dev->width;
1680 cc->bounds.height = dev->height;
1681 cc->defrect = cc->bounds;
1682 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1683 cc->pixelaspect.denominator = 59;
1684
1685 return 0;
1686 }
1687
1688 static int vidioc_streamon(struct file *file, void *priv,
1689 enum v4l2_buf_type type)
1690 {
1691 struct em28xx_fh *fh = priv;
1692 struct em28xx *dev = fh->dev;
1693 int rc = -EINVAL;
1694
1695 rc = check_dev(dev);
1696 if (rc < 0)
1697 return rc;
1698
1699 if (unlikely(type != fh->type))
1700 return -EINVAL;
1701
1702 em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1703 fh, type, fh->resources, dev->resources);
1704
1705 if (unlikely(!res_get(fh, get_ressource(fh))))
1706 return -EBUSY;
1707
1708 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1709 rc = videobuf_streamon(&fh->vb_vidq);
1710 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1711 rc = videobuf_streamon(&fh->vb_vbiq);
1712
1713 return rc;
1714 }
1715
1716 static int vidioc_streamoff(struct file *file, void *priv,
1717 enum v4l2_buf_type type)
1718 {
1719 struct em28xx_fh *fh = priv;
1720 struct em28xx *dev = fh->dev;
1721 int rc;
1722
1723 rc = check_dev(dev);
1724 if (rc < 0)
1725 return rc;
1726
1727 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1728 fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1729 return -EINVAL;
1730 if (type != fh->type)
1731 return -EINVAL;
1732
1733 em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1734 fh, type, fh->resources, dev->resources);
1735
1736 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1737 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
1738 videobuf_streamoff(&fh->vb_vidq);
1739 res_free(fh, EM28XX_RESOURCE_VIDEO);
1740 }
1741 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1742 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
1743 videobuf_streamoff(&fh->vb_vbiq);
1744 res_free(fh, EM28XX_RESOURCE_VBI);
1745 }
1746 }
1747
1748 return 0;
1749 }
1750
1751 static int vidioc_querycap(struct file *file, void *priv,
1752 struct v4l2_capability *cap)
1753 {
1754 struct em28xx_fh *fh = priv;
1755 struct em28xx *dev = fh->dev;
1756
1757 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1758 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1759 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1760
1761 cap->capabilities =
1762 V4L2_CAP_SLICED_VBI_CAPTURE |
1763 V4L2_CAP_VIDEO_CAPTURE |
1764 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1765
1766 if (dev->vbi_dev)
1767 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1768
1769 if (dev->audio_mode.has_audio)
1770 cap->capabilities |= V4L2_CAP_AUDIO;
1771
1772 if (dev->tuner_type != TUNER_ABSENT)
1773 cap->capabilities |= V4L2_CAP_TUNER;
1774
1775 return 0;
1776 }
1777
1778 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1779 struct v4l2_fmtdesc *f)
1780 {
1781 if (unlikely(f->index >= ARRAY_SIZE(format)))
1782 return -EINVAL;
1783
1784 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1785 f->pixelformat = format[f->index].fourcc;
1786
1787 return 0;
1788 }
1789
1790 /* Sliced VBI ioctls */
1791 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1792 struct v4l2_format *f)
1793 {
1794 struct em28xx_fh *fh = priv;
1795 struct em28xx *dev = fh->dev;
1796 int rc;
1797
1798 rc = check_dev(dev);
1799 if (rc < 0)
1800 return rc;
1801
1802 f->fmt.sliced.service_set = 0;
1803 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1804
1805 if (f->fmt.sliced.service_set == 0)
1806 rc = -EINVAL;
1807
1808 return rc;
1809 }
1810
1811 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1812 struct v4l2_format *f)
1813 {
1814 struct em28xx_fh *fh = priv;
1815 struct em28xx *dev = fh->dev;
1816 int rc;
1817
1818 rc = check_dev(dev);
1819 if (rc < 0)
1820 return rc;
1821
1822 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1823
1824 if (f->fmt.sliced.service_set == 0)
1825 return -EINVAL;
1826
1827 return 0;
1828 }
1829
1830 /* RAW VBI ioctls */
1831
1832 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1833 struct v4l2_format *format)
1834 {
1835 struct em28xx_fh *fh = priv;
1836 struct em28xx *dev = fh->dev;
1837
1838 format->fmt.vbi.samples_per_line = dev->vbi_width;
1839 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1840 format->fmt.vbi.offset = 0;
1841 format->fmt.vbi.flags = 0;
1842 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1843 format->fmt.vbi.count[0] = dev->vbi_height;
1844 format->fmt.vbi.count[1] = dev->vbi_height;
1845
1846 /* Varies by video standard (NTSC, PAL, etc.) */
1847 if (dev->norm & V4L2_STD_525_60) {
1848 /* NTSC */
1849 format->fmt.vbi.start[0] = 10;
1850 format->fmt.vbi.start[1] = 273;
1851 } else if (dev->norm & V4L2_STD_625_50) {
1852 /* PAL */
1853 format->fmt.vbi.start[0] = 6;
1854 format->fmt.vbi.start[1] = 318;
1855 }
1856
1857 return 0;
1858 }
1859
1860 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1861 struct v4l2_format *format)
1862 {
1863 struct em28xx_fh *fh = priv;
1864 struct em28xx *dev = fh->dev;
1865
1866 format->fmt.vbi.samples_per_line = dev->vbi_width;
1867 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1868 format->fmt.vbi.offset = 0;
1869 format->fmt.vbi.flags = 0;
1870 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1871 format->fmt.vbi.count[0] = dev->vbi_height;
1872 format->fmt.vbi.count[1] = dev->vbi_height;
1873
1874 /* Varies by video standard (NTSC, PAL, etc.) */
1875 if (dev->norm & V4L2_STD_525_60) {
1876 /* NTSC */
1877 format->fmt.vbi.start[0] = 10;
1878 format->fmt.vbi.start[1] = 273;
1879 } else if (dev->norm & V4L2_STD_625_50) {
1880 /* PAL */
1881 format->fmt.vbi.start[0] = 6;
1882 format->fmt.vbi.start[1] = 318;
1883 }
1884
1885 return 0;
1886 }
1887
1888 static int vidioc_reqbufs(struct file *file, void *priv,
1889 struct v4l2_requestbuffers *rb)
1890 {
1891 struct em28xx_fh *fh = priv;
1892 struct em28xx *dev = fh->dev;
1893 int rc;
1894
1895 rc = check_dev(dev);
1896 if (rc < 0)
1897 return rc;
1898
1899 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1900 return videobuf_reqbufs(&fh->vb_vidq, rb);
1901 else
1902 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1903 }
1904
1905 static int vidioc_querybuf(struct file *file, void *priv,
1906 struct v4l2_buffer *b)
1907 {
1908 struct em28xx_fh *fh = priv;
1909 struct em28xx *dev = fh->dev;
1910 int rc;
1911
1912 rc = check_dev(dev);
1913 if (rc < 0)
1914 return rc;
1915
1916 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1917 return videobuf_querybuf(&fh->vb_vidq, b);
1918 else {
1919 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1920 the videobuf framework, but we probably shouldn't be
1921 returning a buffer larger than that which was asked for.
1922 At a minimum, it causes a crash in zvbi since it does
1923 a memcpy based on the source buffer length */
1924 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1925 b->length = dev->vbi_width * dev->vbi_height * 2;
1926
1927 return result;
1928 }
1929 }
1930
1931 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1932 {
1933 struct em28xx_fh *fh = priv;
1934 struct em28xx *dev = fh->dev;
1935 int rc;
1936
1937 rc = check_dev(dev);
1938 if (rc < 0)
1939 return rc;
1940
1941 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1942 return videobuf_qbuf(&fh->vb_vidq, b);
1943 else
1944 return videobuf_qbuf(&fh->vb_vbiq, b);
1945 }
1946
1947 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1948 {
1949 struct em28xx_fh *fh = priv;
1950 struct em28xx *dev = fh->dev;
1951 int rc;
1952
1953 rc = check_dev(dev);
1954 if (rc < 0)
1955 return rc;
1956
1957 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1958 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1959 O_NONBLOCK);
1960 else
1961 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1962 O_NONBLOCK);
1963 }
1964
1965 /* ----------------------------------------------------------- */
1966 /* RADIO ESPECIFIC IOCTLS */
1967 /* ----------------------------------------------------------- */
1968
1969 static int radio_querycap(struct file *file, void *priv,
1970 struct v4l2_capability *cap)
1971 {
1972 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1973
1974 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1975 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1976 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1977
1978 cap->capabilities = V4L2_CAP_TUNER;
1979 return 0;
1980 }
1981
1982 static int radio_g_tuner(struct file *file, void *priv,
1983 struct v4l2_tuner *t)
1984 {
1985 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1986
1987 if (unlikely(t->index > 0))
1988 return -EINVAL;
1989
1990 strcpy(t->name, "Radio");
1991 t->type = V4L2_TUNER_RADIO;
1992
1993 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1994
1995 return 0;
1996 }
1997
1998 static int radio_enum_input(struct file *file, void *priv,
1999 struct v4l2_input *i)
2000 {
2001 if (i->index != 0)
2002 return -EINVAL;
2003 strcpy(i->name, "Radio");
2004 i->type = V4L2_INPUT_TYPE_TUNER;
2005
2006 return 0;
2007 }
2008
2009 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2010 {
2011 if (unlikely(a->index))
2012 return -EINVAL;
2013
2014 strcpy(a->name, "Radio");
2015 return 0;
2016 }
2017
2018 static int radio_s_tuner(struct file *file, void *priv,
2019 struct v4l2_tuner *t)
2020 {
2021 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2022
2023 if (0 != t->index)
2024 return -EINVAL;
2025
2026 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2027
2028 return 0;
2029 }
2030
2031 static int radio_s_audio(struct file *file, void *fh,
2032 struct v4l2_audio *a)
2033 {
2034 return 0;
2035 }
2036
2037 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2038 {
2039 return 0;
2040 }
2041
2042 static int radio_queryctrl(struct file *file, void *priv,
2043 struct v4l2_queryctrl *qc)
2044 {
2045 int i;
2046
2047 if (qc->id < V4L2_CID_BASE ||
2048 qc->id >= V4L2_CID_LASTP1)
2049 return -EINVAL;
2050
2051 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2052 if (qc->id && qc->id == ac97_qctrl[i].id) {
2053 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2054 return 0;
2055 }
2056 }
2057
2058 return -EINVAL;
2059 }
2060
2061 /*
2062 * em28xx_v4l2_open()
2063 * inits the device and starts isoc transfer
2064 */
2065 static int em28xx_v4l2_open(struct file *filp)
2066 {
2067 int errCode = 0, radio = 0;
2068 struct video_device *vdev = video_devdata(filp);
2069 struct em28xx *dev = video_drvdata(filp);
2070 enum v4l2_buf_type fh_type = 0;
2071 struct em28xx_fh *fh;
2072 enum v4l2_field field;
2073
2074 switch (vdev->vfl_type) {
2075 case VFL_TYPE_GRABBER:
2076 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2077 break;
2078 case VFL_TYPE_VBI:
2079 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
2080 break;
2081 case VFL_TYPE_RADIO:
2082 radio = 1;
2083 break;
2084 }
2085
2086 em28xx_videodbg("open dev=%s type=%s users=%d\n",
2087 video_device_node_name(vdev), v4l2_type_names[fh_type],
2088 dev->users);
2089
2090
2091 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2092 if (!fh) {
2093 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2094 return -ENOMEM;
2095 }
2096 fh->dev = dev;
2097 fh->radio = radio;
2098 fh->type = fh_type;
2099 filp->private_data = fh;
2100
2101 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2102 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2103 em28xx_set_alternate(dev);
2104 em28xx_resolution_set(dev);
2105
2106 /* Needed, since GPIO might have disabled power of
2107 some i2c device
2108 */
2109 em28xx_wake_i2c(dev);
2110
2111 }
2112 if (fh->radio) {
2113 em28xx_videodbg("video_open: setting radio device\n");
2114 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2115 }
2116
2117 dev->users++;
2118
2119 if (dev->progressive)
2120 field = V4L2_FIELD_NONE;
2121 else
2122 field = V4L2_FIELD_INTERLACED;
2123
2124 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2125 NULL, &dev->slock,
2126 V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2127 sizeof(struct em28xx_buffer), fh, &dev->lock);
2128
2129 videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2130 NULL, &dev->slock,
2131 V4L2_BUF_TYPE_VBI_CAPTURE,
2132 V4L2_FIELD_SEQ_TB,
2133 sizeof(struct em28xx_buffer), fh, &dev->lock);
2134
2135 return errCode;
2136 }
2137
2138 /*
2139 * em28xx_realease_resources()
2140 * unregisters the v4l2,i2c and usb devices
2141 * called when the device gets disconected or at module unload
2142 */
2143 void em28xx_release_analog_resources(struct em28xx *dev)
2144 {
2145
2146 /*FIXME: I2C IR should be disconnected */
2147
2148 if (dev->radio_dev) {
2149 if (video_is_registered(dev->radio_dev))
2150 video_unregister_device(dev->radio_dev);
2151 else
2152 video_device_release(dev->radio_dev);
2153 dev->radio_dev = NULL;
2154 }
2155 if (dev->vbi_dev) {
2156 em28xx_info("V4L2 device %s deregistered\n",
2157 video_device_node_name(dev->vbi_dev));
2158 if (video_is_registered(dev->vbi_dev))
2159 video_unregister_device(dev->vbi_dev);
2160 else
2161 video_device_release(dev->vbi_dev);
2162 dev->vbi_dev = NULL;
2163 }
2164 if (dev->vdev) {
2165 em28xx_info("V4L2 device %s deregistered\n",
2166 video_device_node_name(dev->vdev));
2167 if (video_is_registered(dev->vdev))
2168 video_unregister_device(dev->vdev);
2169 else
2170 video_device_release(dev->vdev);
2171 dev->vdev = NULL;
2172 }
2173 }
2174
2175 /*
2176 * em28xx_v4l2_close()
2177 * stops streaming and deallocates all resources allocated by the v4l2
2178 * calls and ioctls
2179 */
2180 static int em28xx_v4l2_close(struct file *filp)
2181 {
2182 struct em28xx_fh *fh = filp->private_data;
2183 struct em28xx *dev = fh->dev;
2184 int errCode;
2185
2186 em28xx_videodbg("users=%d\n", dev->users);
2187
2188 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2189 videobuf_stop(&fh->vb_vidq);
2190 res_free(fh, EM28XX_RESOURCE_VIDEO);
2191 }
2192
2193 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2194 videobuf_stop(&fh->vb_vbiq);
2195 res_free(fh, EM28XX_RESOURCE_VBI);
2196 }
2197
2198 if (dev->users == 1) {
2199 /* the device is already disconnect,
2200 free the remaining resources */
2201 if (dev->state & DEV_DISCONNECTED) {
2202 em28xx_release_resources(dev);
2203 kfree(dev);
2204 return 0;
2205 }
2206
2207 /* Save some power by putting tuner to sleep */
2208 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2209
2210 /* do this before setting alternate! */
2211 em28xx_uninit_isoc(dev);
2212 em28xx_set_mode(dev, EM28XX_SUSPEND);
2213
2214 /* set alternate 0 */
2215 dev->alt = 0;
2216 em28xx_videodbg("setting alternate 0\n");
2217 errCode = usb_set_interface(dev->udev, 0, 0);
2218 if (errCode < 0) {
2219 em28xx_errdev("cannot change alternate number to "
2220 "0 (error=%i)\n", errCode);
2221 }
2222 }
2223
2224 videobuf_mmap_free(&fh->vb_vidq);
2225 videobuf_mmap_free(&fh->vb_vbiq);
2226 kfree(fh);
2227 dev->users--;
2228 wake_up_interruptible_nr(&dev->open, 1);
2229 return 0;
2230 }
2231
2232 /*
2233 * em28xx_v4l2_read()
2234 * will allocate buffers when called for the first time
2235 */
2236 static ssize_t
2237 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2238 loff_t *pos)
2239 {
2240 struct em28xx_fh *fh = filp->private_data;
2241 struct em28xx *dev = fh->dev;
2242 int rc;
2243
2244 rc = check_dev(dev);
2245 if (rc < 0)
2246 return rc;
2247
2248 /* FIXME: read() is not prepared to allow changing the video
2249 resolution while streaming. Seems a bug at em28xx_set_fmt
2250 */
2251
2252 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2253 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2254 return -EBUSY;
2255
2256 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2257 filp->f_flags & O_NONBLOCK);
2258 }
2259
2260
2261 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2262 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2263 return -EBUSY;
2264
2265 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2266 filp->f_flags & O_NONBLOCK);
2267 }
2268
2269 return 0;
2270 }
2271
2272 /*
2273 * em28xx_v4l2_poll()
2274 * will allocate buffers when called for the first time
2275 */
2276 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2277 {
2278 struct em28xx_fh *fh = filp->private_data;
2279 struct em28xx *dev = fh->dev;
2280 int rc;
2281
2282 rc = check_dev(dev);
2283 if (rc < 0)
2284 return rc;
2285
2286 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2287 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2288 return POLLERR;
2289 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2290 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2291 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2292 return POLLERR;
2293 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2294 } else {
2295 return POLLERR;
2296 }
2297 }
2298
2299 /*
2300 * em28xx_v4l2_mmap()
2301 */
2302 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2303 {
2304 struct em28xx_fh *fh = filp->private_data;
2305 struct em28xx *dev = fh->dev;
2306 int rc;
2307
2308 rc = check_dev(dev);
2309 if (rc < 0)
2310 return rc;
2311
2312 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2313 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2314 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2315 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2316
2317 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2318 (unsigned long)vma->vm_start,
2319 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2320 rc);
2321
2322 return rc;
2323 }
2324
2325 static const struct v4l2_file_operations em28xx_v4l_fops = {
2326 .owner = THIS_MODULE,
2327 .open = em28xx_v4l2_open,
2328 .release = em28xx_v4l2_close,
2329 .read = em28xx_v4l2_read,
2330 .poll = em28xx_v4l2_poll,
2331 .mmap = em28xx_v4l2_mmap,
2332 .unlocked_ioctl = video_ioctl2,
2333 };
2334
2335 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2336 .vidioc_querycap = vidioc_querycap,
2337 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2338 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2339 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2340 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2341 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2342 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
2343 .vidioc_g_audio = vidioc_g_audio,
2344 .vidioc_s_audio = vidioc_s_audio,
2345 .vidioc_cropcap = vidioc_cropcap,
2346
2347 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2348 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2349 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2350
2351 .vidioc_reqbufs = vidioc_reqbufs,
2352 .vidioc_querybuf = vidioc_querybuf,
2353 .vidioc_qbuf = vidioc_qbuf,
2354 .vidioc_dqbuf = vidioc_dqbuf,
2355 .vidioc_g_std = vidioc_g_std,
2356 .vidioc_s_std = vidioc_s_std,
2357 .vidioc_g_parm = vidioc_g_parm,
2358 .vidioc_s_parm = vidioc_s_parm,
2359 .vidioc_enum_input = vidioc_enum_input,
2360 .vidioc_g_input = vidioc_g_input,
2361 .vidioc_s_input = vidioc_s_input,
2362 .vidioc_queryctrl = vidioc_queryctrl,
2363 .vidioc_g_ctrl = vidioc_g_ctrl,
2364 .vidioc_s_ctrl = vidioc_s_ctrl,
2365 .vidioc_streamon = vidioc_streamon,
2366 .vidioc_streamoff = vidioc_streamoff,
2367 .vidioc_g_tuner = vidioc_g_tuner,
2368 .vidioc_s_tuner = vidioc_s_tuner,
2369 .vidioc_g_frequency = vidioc_g_frequency,
2370 .vidioc_s_frequency = vidioc_s_frequency,
2371 #ifdef CONFIG_VIDEO_ADV_DEBUG
2372 .vidioc_g_register = vidioc_g_register,
2373 .vidioc_s_register = vidioc_s_register,
2374 .vidioc_g_chip_ident = vidioc_g_chip_ident,
2375 #endif
2376 };
2377
2378 static const struct video_device em28xx_video_template = {
2379 .fops = &em28xx_v4l_fops,
2380 .release = video_device_release,
2381 .ioctl_ops = &video_ioctl_ops,
2382
2383 .tvnorms = V4L2_STD_ALL,
2384 .current_norm = V4L2_STD_PAL,
2385 };
2386
2387 static const struct v4l2_file_operations radio_fops = {
2388 .owner = THIS_MODULE,
2389 .open = em28xx_v4l2_open,
2390 .release = em28xx_v4l2_close,
2391 .unlocked_ioctl = video_ioctl2,
2392 };
2393
2394 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2395 .vidioc_querycap = radio_querycap,
2396 .vidioc_g_tuner = radio_g_tuner,
2397 .vidioc_enum_input = radio_enum_input,
2398 .vidioc_g_audio = radio_g_audio,
2399 .vidioc_s_tuner = radio_s_tuner,
2400 .vidioc_s_audio = radio_s_audio,
2401 .vidioc_s_input = radio_s_input,
2402 .vidioc_queryctrl = radio_queryctrl,
2403 .vidioc_g_ctrl = vidioc_g_ctrl,
2404 .vidioc_s_ctrl = vidioc_s_ctrl,
2405 .vidioc_g_frequency = vidioc_g_frequency,
2406 .vidioc_s_frequency = vidioc_s_frequency,
2407 #ifdef CONFIG_VIDEO_ADV_DEBUG
2408 .vidioc_g_register = vidioc_g_register,
2409 .vidioc_s_register = vidioc_s_register,
2410 #endif
2411 };
2412
2413 static struct video_device em28xx_radio_template = {
2414 .name = "em28xx-radio",
2415 .fops = &radio_fops,
2416 .ioctl_ops = &radio_ioctl_ops,
2417 };
2418
2419 /******************************** usb interface ******************************/
2420
2421
2422
2423 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2424 const struct video_device *template,
2425 const char *type_name)
2426 {
2427 struct video_device *vfd;
2428
2429 vfd = video_device_alloc();
2430 if (NULL == vfd)
2431 return NULL;
2432
2433 *vfd = *template;
2434 vfd->v4l2_dev = &dev->v4l2_dev;
2435 vfd->release = video_device_release;
2436 vfd->debug = video_debug;
2437 vfd->lock = &dev->lock;
2438
2439 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2440 dev->name, type_name);
2441
2442 video_set_drvdata(vfd, dev);
2443 return vfd;
2444 }
2445
2446 int em28xx_register_analog_devices(struct em28xx *dev)
2447 {
2448 u8 val;
2449 int ret;
2450
2451 printk(KERN_INFO "%s: v4l2 driver version %s\n",
2452 dev->name, EM28XX_VERSION);
2453
2454 /* set default norm */
2455 dev->norm = em28xx_video_template.current_norm;
2456 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
2457 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2458 dev->ctl_input = 0;
2459
2460 /* Analog specific initialization */
2461 dev->format = &format[0];
2462 em28xx_set_video_format(dev, format[0].fourcc,
2463 norm_maxw(dev), norm_maxh(dev));
2464
2465 video_mux(dev, dev->ctl_input);
2466
2467 /* Audio defaults */
2468 dev->mute = 1;
2469 dev->volume = 0x1f;
2470
2471 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2472 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2473 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2474 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2475
2476 em28xx_set_outfmt(dev);
2477 em28xx_colorlevels_set_default(dev);
2478 em28xx_compression_disable(dev);
2479
2480 /* allocate and fill video video_device struct */
2481 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2482 if (!dev->vdev) {
2483 em28xx_errdev("cannot allocate video_device.\n");
2484 return -ENODEV;
2485 }
2486
2487 /* register v4l2 video video_device */
2488 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2489 video_nr[dev->devno]);
2490 if (ret) {
2491 em28xx_errdev("unable to register video device (error=%i).\n",
2492 ret);
2493 return ret;
2494 }
2495
2496 /* Allocate and fill vbi video_device struct */
2497 if (em28xx_vbi_supported(dev) == 1) {
2498 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2499 "vbi");
2500
2501 /* register v4l2 vbi video_device */
2502 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2503 vbi_nr[dev->devno]);
2504 if (ret < 0) {
2505 em28xx_errdev("unable to register vbi device\n");
2506 return ret;
2507 }
2508 }
2509
2510 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2511 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2512 "radio");
2513 if (!dev->radio_dev) {
2514 em28xx_errdev("cannot allocate video_device.\n");
2515 return -ENODEV;
2516 }
2517 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2518 radio_nr[dev->devno]);
2519 if (ret < 0) {
2520 em28xx_errdev("can't register radio device\n");
2521 return ret;
2522 }
2523 em28xx_info("Registered radio device as %s\n",
2524 video_device_node_name(dev->radio_dev));
2525 }
2526
2527 em28xx_info("V4L2 video device registered as %s\n",
2528 video_device_node_name(dev->vdev));
2529
2530 if (dev->vbi_dev)
2531 em28xx_info("V4L2 VBI device registered as %s\n",
2532 video_device_node_name(dev->vbi_dev));
2533
2534 return 0;
2535 }
linux-next