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RT-AC56 3.0.0.4.374.37 core
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / media / video / em28xx / em28xx-video.c
blob919f1df1eb0feca16b3e898d084e2188d155faa5
1 /*
2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3 video capture devices
4
5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
7 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Sascha Sommer <saschasommer@freenet.de>
9
10 Some parts based on SN9C10x PC Camera Controllers GPL driver made
11 by Luca Risolia <luca.risolia@studio.unibo.it>
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/bitmap.h>
33 #include <linux/usb.h>
34 #include <linux/i2c.h>
35 #include <linux/version.h>
36 #include <linux/mm.h>
37 #include <linux/mutex.h>
38 #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-chip-ident.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 #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 2)
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
76 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
77 static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
78 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
79
80 module_param_array(video_nr, int, NULL, 0444);
81 module_param_array(vbi_nr, int, NULL, 0444);
82 module_param_array(radio_nr, int, NULL, 0444);
83 MODULE_PARM_DESC(video_nr, "video device numbers");
84 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
85 MODULE_PARM_DESC(radio_nr, "radio device numbers");
86
87 static unsigned int video_debug;
88 module_param(video_debug, int, 0644);
89 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
90
91 /* supported video standards */
92 static struct em28xx_fmt format[] = {
93 {
94 .name = "16 bpp YUY2, 4:2:2, packed",
95 .fourcc = V4L2_PIX_FMT_YUYV,
96 .depth = 16,
97 .reg = EM28XX_OUTFMT_YUV422_Y0UY1V,
98 }, {
99 .name = "16 bpp RGB 565, LE",
100 .fourcc = V4L2_PIX_FMT_RGB565,
101 .depth = 16,
102 .reg = EM28XX_OUTFMT_RGB_16_656,
103 }, {
104 .name = "8 bpp Bayer BGBG..GRGR",
105 .fourcc = V4L2_PIX_FMT_SBGGR8,
106 .depth = 8,
107 .reg = EM28XX_OUTFMT_RGB_8_BGBG,
108 }, {
109 .name = "8 bpp Bayer GRGR..BGBG",
110 .fourcc = V4L2_PIX_FMT_SGRBG8,
111 .depth = 8,
112 .reg = EM28XX_OUTFMT_RGB_8_GRGR,
113 }, {
114 .name = "8 bpp Bayer GBGB..RGRG",
115 .fourcc = V4L2_PIX_FMT_SGBRG8,
116 .depth = 8,
117 .reg = EM28XX_OUTFMT_RGB_8_GBGB,
118 }, {
119 .name = "12 bpp YUV411",
120 .fourcc = V4L2_PIX_FMT_YUV411P,
121 .depth = 12,
122 .reg = EM28XX_OUTFMT_YUV411,
123 },
124 };
125
126 /* supported controls */
127 /* Common to all boards */
128 static struct v4l2_queryctrl ac97_qctrl[] = {
129 {
130 .id = V4L2_CID_AUDIO_VOLUME,
131 .type = V4L2_CTRL_TYPE_INTEGER,
132 .name = "Volume",
133 .minimum = 0x0,
134 .maximum = 0x1f,
135 .step = 0x1,
136 .default_value = 0x1f,
137 .flags = V4L2_CTRL_FLAG_SLIDER,
138 }, {
139 .id = V4L2_CID_AUDIO_MUTE,
140 .type = V4L2_CTRL_TYPE_BOOLEAN,
141 .name = "Mute",
142 .minimum = 0,
143 .maximum = 1,
144 .step = 1,
145 .default_value = 1,
146 .flags = 0,
147 }
148 };
149
150 /* ------------------------------------------------------------------
151 DMA and thread functions
152 ------------------------------------------------------------------*/
153
154 /*
155 * Announces that a buffer were filled and request the next
156 */
157 static inline void buffer_filled(struct em28xx *dev,
158 struct em28xx_dmaqueue *dma_q,
159 struct em28xx_buffer *buf)
160 {
161 /* Advice that buffer was filled */
162 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
163 buf->vb.state = VIDEOBUF_DONE;
164 buf->vb.field_count++;
165 do_gettimeofday(&buf->vb.ts);
166
167 dev->isoc_ctl.vid_buf = NULL;
168
169 list_del(&buf->vb.queue);
170 wake_up(&buf->vb.done);
171 }
172
173 static inline void vbi_buffer_filled(struct em28xx *dev,
174 struct em28xx_dmaqueue *dma_q,
175 struct em28xx_buffer *buf)
176 {
177 /* Advice that buffer was filled */
178 em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
179
180 buf->vb.state = VIDEOBUF_DONE;
181 buf->vb.field_count++;
182 do_gettimeofday(&buf->vb.ts);
183
184 dev->isoc_ctl.vbi_buf = NULL;
185
186 list_del(&buf->vb.queue);
187 wake_up(&buf->vb.done);
188 }
189
190 /*
191 * Identify the buffer header type and properly handles
192 */
193 static void em28xx_copy_video(struct em28xx *dev,
194 struct em28xx_dmaqueue *dma_q,
195 struct em28xx_buffer *buf,
196 unsigned char *p,
197 unsigned char *outp, unsigned long len)
198 {
199 void *fieldstart, *startwrite, *startread;
200 int linesdone, currlinedone, offset, lencopy, remain;
201 int bytesperline = dev->width << 1;
202
203 if (dma_q->pos + len > buf->vb.size)
204 len = buf->vb.size - dma_q->pos;
205
206 startread = p;
207 remain = len;
208
209 if (dev->progressive)
210 fieldstart = outp;
211 else {
212 /* Interlaces two half frames */
213 if (buf->top_field)
214 fieldstart = outp;
215 else
216 fieldstart = outp + bytesperline;
217 }
218
219 linesdone = dma_q->pos / bytesperline;
220 currlinedone = dma_q->pos % bytesperline;
221
222 if (dev->progressive)
223 offset = linesdone * bytesperline + currlinedone;
224 else
225 offset = linesdone * bytesperline * 2 + currlinedone;
226
227 startwrite = fieldstart + offset;
228 lencopy = bytesperline - currlinedone;
229 lencopy = lencopy > remain ? remain : lencopy;
230
231 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
232 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
233 ((char *)startwrite + lencopy) -
234 ((char *)outp + buf->vb.size));
235 remain = (char *)outp + buf->vb.size - (char *)startwrite;
236 lencopy = remain;
237 }
238 if (lencopy <= 0)
239 return;
240 memcpy(startwrite, startread, lencopy);
241
242 remain -= lencopy;
243
244 while (remain > 0) {
245 startwrite += lencopy + bytesperline;
246 startread += lencopy;
247 if (bytesperline > remain)
248 lencopy = remain;
249 else
250 lencopy = bytesperline;
251
252 if ((char *)startwrite + lencopy > (char *)outp +
253 buf->vb.size) {
254 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
255 "(2)\n",
256 ((char *)startwrite + lencopy) -
257 ((char *)outp + buf->vb.size));
258 lencopy = remain = (char *)outp + buf->vb.size -
259 (char *)startwrite;
260 }
261 if (lencopy <= 0)
262 break;
263
264 memcpy(startwrite, startread, lencopy);
265
266 remain -= lencopy;
267 }
268
269 dma_q->pos += len;
270 }
271
272 static void em28xx_copy_vbi(struct em28xx *dev,
273 struct em28xx_dmaqueue *dma_q,
274 struct em28xx_buffer *buf,
275 unsigned char *p,
276 unsigned char *outp, unsigned long len)
277 {
278 void *startwrite, *startread;
279 int offset;
280 int bytesperline = dev->vbi_width;
281
282 if (dev == NULL) {
283 em28xx_isocdbg("dev is null\n");
284 return;
285 }
286
287 if (dma_q == NULL) {
288 em28xx_isocdbg("dma_q is null\n");
289 return;
290 }
291 if (buf == NULL) {
292 return;
293 }
294 if (p == NULL) {
295 em28xx_isocdbg("p is null\n");
296 return;
297 }
298 if (outp == NULL) {
299 em28xx_isocdbg("outp is null\n");
300 return;
301 }
302
303 if (dma_q->pos + len > buf->vb.size)
304 len = buf->vb.size - dma_q->pos;
305
306 startread = p;
307
308 startwrite = outp + dma_q->pos;
309 offset = dma_q->pos;
310
311 /* Make sure the bottom field populates the second half of the frame */
312 if (buf->top_field == 0) {
313 startwrite += bytesperline * dev->vbi_height;
314 offset += bytesperline * dev->vbi_height;
315 }
316
317 memcpy(startwrite, startread, len);
318 dma_q->pos += len;
319 }
320
321 static inline void print_err_status(struct em28xx *dev,
322 int packet, int status)
323 {
324 char *errmsg = "Unknown";
325
326 switch (status) {
327 case -ENOENT:
328 errmsg = "unlinked synchronuously";
329 break;
330 case -ECONNRESET:
331 errmsg = "unlinked asynchronuously";
332 break;
333 case -ENOSR:
334 errmsg = "Buffer error (overrun)";
335 break;
336 case -EPIPE:
337 errmsg = "Stalled (device not responding)";
338 break;
339 case -EOVERFLOW:
340 errmsg = "Babble (bad cable?)";
341 break;
342 case -EPROTO:
343 errmsg = "Bit-stuff error (bad cable?)";
344 break;
345 case -EILSEQ:
346 errmsg = "CRC/Timeout (could be anything)";
347 break;
348 case -ETIME:
349 errmsg = "Device does not respond";
350 break;
351 }
352 if (packet < 0) {
353 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
354 } else {
355 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
356 packet, status, errmsg);
357 }
358 }
359
360 /*
361 * video-buf generic routine to get the next available buffer
362 */
363 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
364 struct em28xx_buffer **buf)
365 {
366 struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
367 char *outp;
368
369 if (list_empty(&dma_q->active)) {
370 em28xx_isocdbg("No active queue to serve\n");
371 dev->isoc_ctl.vid_buf = NULL;
372 *buf = NULL;
373 return;
374 }
375
376 /* Get the next buffer */
377 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
378
379 /* Cleans up buffer - Usefull for testing for frame/URB loss */
380 outp = videobuf_to_vmalloc(&(*buf)->vb);
381 memset(outp, 0, (*buf)->vb.size);
382
383 dev->isoc_ctl.vid_buf = *buf;
384
385 return;
386 }
387
388 /*
389 * video-buf generic routine to get the next available VBI buffer
390 */
391 static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q,
392 struct em28xx_buffer **buf)
393 {
394 struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq);
395 char *outp;
396
397 if (list_empty(&dma_q->active)) {
398 em28xx_isocdbg("No active queue to serve\n");
399 dev->isoc_ctl.vbi_buf = NULL;
400 *buf = NULL;
401 return;
402 }
403
404 /* Get the next buffer */
405 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
406 /* Cleans up buffer - Usefull for testing for frame/URB loss */
407 outp = videobuf_to_vmalloc(&(*buf)->vb);
408 memset(outp, 0x00, (*buf)->vb.size);
409
410 dev->isoc_ctl.vbi_buf = *buf;
411
412 return;
413 }
414
415 /*
416 * Controls the isoc copy of each urb packet
417 */
418 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
419 {
420 struct em28xx_buffer *buf;
421 struct em28xx_dmaqueue *dma_q = &dev->vidq;
422 unsigned char *outp = NULL;
423 int i, len = 0, rc = 1;
424 unsigned char *p;
425
426 if (!dev)
427 return 0;
428
429 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
430 return 0;
431
432 if (urb->status < 0) {
433 print_err_status(dev, -1, urb->status);
434 if (urb->status == -ENOENT)
435 return 0;
436 }
437
438 buf = dev->isoc_ctl.vid_buf;
439 if (buf != NULL)
440 outp = videobuf_to_vmalloc(&buf->vb);
441
442 for (i = 0; i < urb->number_of_packets; i++) {
443 int status = urb->iso_frame_desc[i].status;
444
445 if (status < 0) {
446 print_err_status(dev, i, status);
447 if (urb->iso_frame_desc[i].status != -EPROTO)
448 continue;
449 }
450
451 len = urb->iso_frame_desc[i].actual_length - 4;
452
453 if (urb->iso_frame_desc[i].actual_length <= 0) {
454 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
455 continue;
456 }
457 if (urb->iso_frame_desc[i].actual_length >
458 dev->max_pkt_size) {
459 em28xx_isocdbg("packet bigger than packet size");
460 continue;
461 }
462
463 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
464
465 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
466 em28xx_isocdbg("VBI HEADER!!!\n");
467 continue;
468 }
469 if (p[0] == 0x22 && p[1] == 0x5a) {
470 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
471 len, (p[2] & 1) ? "odd" : "even");
472
473 if (dev->progressive || !(p[2] & 1)) {
474 if (buf != NULL)
475 buffer_filled(dev, dma_q, buf);
476 get_next_buf(dma_q, &buf);
477 if (buf == NULL)
478 outp = NULL;
479 else
480 outp = videobuf_to_vmalloc(&buf->vb);
481 }
482
483 if (buf != NULL) {
484 if (p[2] & 1)
485 buf->top_field = 0;
486 else
487 buf->top_field = 1;
488 }
489
490 dma_q->pos = 0;
491 }
492 if (buf != NULL) {
493 if (p[0] != 0x88 && p[0] != 0x22) {
494 em28xx_isocdbg("frame is not complete\n");
495 len += 4;
496 } else {
497 p += 4;
498 }
499 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
500 }
501 }
502 return rc;
503 }
504
505 /* Version of isoc handler that takes into account a mixture of video and
506 VBI data */
507 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
508 {
509 struct em28xx_buffer *buf, *vbi_buf;
510 struct em28xx_dmaqueue *dma_q = &dev->vidq;
511 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
512 unsigned char *outp = NULL;
513 unsigned char *vbioutp = NULL;
514 int i, len = 0, rc = 1;
515 unsigned char *p;
516 int vbi_size;
517
518 if (!dev)
519 return 0;
520
521 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
522 return 0;
523
524 if (urb->status < 0) {
525 print_err_status(dev, -1, urb->status);
526 if (urb->status == -ENOENT)
527 return 0;
528 }
529
530 buf = dev->isoc_ctl.vid_buf;
531 if (buf != NULL)
532 outp = videobuf_to_vmalloc(&buf->vb);
533
534 vbi_buf = dev->isoc_ctl.vbi_buf;
535 if (vbi_buf != NULL)
536 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
537
538 for (i = 0; i < urb->number_of_packets; i++) {
539 int status = urb->iso_frame_desc[i].status;
540
541 if (status < 0) {
542 print_err_status(dev, i, status);
543 if (urb->iso_frame_desc[i].status != -EPROTO)
544 continue;
545 }
546
547 len = urb->iso_frame_desc[i].actual_length;
548 if (urb->iso_frame_desc[i].actual_length <= 0) {
549 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
550 continue;
551 }
552 if (urb->iso_frame_desc[i].actual_length >
553 dev->max_pkt_size) {
554 em28xx_isocdbg("packet bigger than packet size");
555 continue;
556 }
557
558 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
559
560 /* capture type 0 = vbi start
561 capture type 1 = video start
562 capture type 2 = video in progress */
563 if (p[0] == 0x33 && p[1] == 0x95) {
564 dev->capture_type = 0;
565 dev->vbi_read = 0;
566 em28xx_isocdbg("VBI START HEADER!!!\n");
567 dev->cur_field = p[2];
568 p += 4;
569 len -= 4;
570 } else if (p[0] == 0x88 && p[1] == 0x88 &&
571 p[2] == 0x88 && p[3] == 0x88) {
572 /* continuation */
573 p += 4;
574 len -= 4;
575 } else if (p[0] == 0x22 && p[1] == 0x5a) {
576 /* start video */
577 p += 4;
578 len -= 4;
579 }
580
581 vbi_size = dev->vbi_width * dev->vbi_height;
582
583 if (dev->capture_type == 0) {
584 if (dev->vbi_read >= vbi_size) {
585 /* We've already read all the VBI data, so
586 treat the rest as video */
587 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
588 } else if ((dev->vbi_read + len) < vbi_size) {
589 /* This entire frame is VBI data */
590 if (dev->vbi_read == 0 &&
591 (!(dev->cur_field & 1))) {
592 /* Brand new frame */
593 if (vbi_buf != NULL)
594 vbi_buffer_filled(dev,
595 vbi_dma_q,
596 vbi_buf);
597 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
598 if (vbi_buf == NULL)
599 vbioutp = NULL;
600 else
601 vbioutp = videobuf_to_vmalloc(
602 &vbi_buf->vb);
603 }
604
605 if (dev->vbi_read == 0) {
606 vbi_dma_q->pos = 0;
607 if (vbi_buf != NULL) {
608 if (dev->cur_field & 1)
609 vbi_buf->top_field = 0;
610 else
611 vbi_buf->top_field = 1;
612 }
613 }
614
615 dev->vbi_read += len;
616 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
617 vbioutp, len);
618 } else {
619 /* Some of this frame is VBI data and some is
620 video data */
621 int vbi_data_len = vbi_size - dev->vbi_read;
622 dev->vbi_read += vbi_data_len;
623 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
624 vbioutp, vbi_data_len);
625 dev->capture_type = 1;
626 p += vbi_data_len;
627 len -= vbi_data_len;
628 }
629 }
630
631 if (dev->capture_type == 1) {
632 dev->capture_type = 2;
633 if (dev->progressive || !(dev->cur_field & 1)) {
634 if (buf != NULL)
635 buffer_filled(dev, dma_q, buf);
636 get_next_buf(dma_q, &buf);
637 if (buf == NULL)
638 outp = NULL;
639 else
640 outp = videobuf_to_vmalloc(&buf->vb);
641 }
642 if (buf != NULL) {
643 if (dev->cur_field & 1)
644 buf->top_field = 0;
645 else
646 buf->top_field = 1;
647 }
648
649 dma_q->pos = 0;
650 }
651
652 if (buf != NULL && dev->capture_type == 2) {
653 if (len >= 4 && p[0] == 0x88 && p[1] == 0x88 &&
654 p[2] == 0x88 && p[3] == 0x88) {
655 p += 4;
656 len -= 4;
657 }
658 if (len >= 4 && p[0] == 0x22 && p[1] == 0x5a) {
659 em28xx_isocdbg("Video frame %d, len=%i, %s\n",
660 p[2], len, (p[2] & 1) ?
661 "odd" : "even");
662 p += 4;
663 len -= 4;
664 }
665
666 if (len > 0)
667 em28xx_copy_video(dev, dma_q, buf, p, outp,
668 len);
669 }
670 }
671 return rc;
672 }
673
674
675 /* ------------------------------------------------------------------
676 Videobuf operations
677 ------------------------------------------------------------------*/
678
679 static int
680 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
681 {
682 struct em28xx_fh *fh = vq->priv_data;
683 struct em28xx *dev = fh->dev;
684 struct v4l2_frequency f;
685
686 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
687 >> 3;
688
689 if (0 == *count)
690 *count = EM28XX_DEF_BUF;
691
692 if (*count < EM28XX_MIN_BUF)
693 *count = EM28XX_MIN_BUF;
694
695 /* Ask tuner to go to analog or radio mode */
696 memset(&f, 0, sizeof(f));
697 f.frequency = dev->ctl_freq;
698 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
699
700 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
701
702 return 0;
703 }
704
705 /* This is called *without* dev->slock held; please keep it that way */
706 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
707 {
708 struct em28xx_fh *fh = vq->priv_data;
709 struct em28xx *dev = fh->dev;
710 unsigned long flags = 0;
711 if (in_interrupt())
712 BUG();
713
714 /* We used to wait for the buffer to finish here, but this didn't work
715 because, as we were keeping the state as VIDEOBUF_QUEUED,
716 videobuf_queue_cancel marked it as finished for us.
717 (Also, it could wedge forever if the hardware was misconfigured.)
718
719 This should be safe; by the time we get here, the buffer isn't
720 queued anymore. If we ever start marking the buffers as
721 VIDEOBUF_ACTIVE, it won't be, though.
722 */
723 spin_lock_irqsave(&dev->slock, flags);
724 if (dev->isoc_ctl.vid_buf == buf)
725 dev->isoc_ctl.vid_buf = NULL;
726 spin_unlock_irqrestore(&dev->slock, flags);
727
728 videobuf_vmalloc_free(&buf->vb);
729 buf->vb.state = VIDEOBUF_NEEDS_INIT;
730 }
731
732 static int
733 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
734 enum v4l2_field field)
735 {
736 struct em28xx_fh *fh = vq->priv_data;
737 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
738 struct em28xx *dev = fh->dev;
739 int rc = 0, urb_init = 0;
740
741 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
742 + 7) >> 3;
743
744 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
745 return -EINVAL;
746
747 buf->vb.width = dev->width;
748 buf->vb.height = dev->height;
749 buf->vb.field = field;
750
751 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
752 rc = videobuf_iolock(vq, &buf->vb, NULL);
753 if (rc < 0)
754 goto fail;
755 }
756
757 if (!dev->isoc_ctl.num_bufs)
758 urb_init = 1;
759
760 if (urb_init) {
761 if (em28xx_vbi_supported(dev) == 1)
762 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
763 EM28XX_NUM_BUFS,
764 dev->max_pkt_size,
765 em28xx_isoc_copy_vbi);
766 else
767 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
768 EM28XX_NUM_BUFS,
769 dev->max_pkt_size,
770 em28xx_isoc_copy);
771 if (rc < 0)
772 goto fail;
773 }
774
775 buf->vb.state = VIDEOBUF_PREPARED;
776 return 0;
777
778 fail:
779 free_buffer(vq, buf);
780 return rc;
781 }
782
783 static void
784 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
785 {
786 struct em28xx_buffer *buf = container_of(vb,
787 struct em28xx_buffer,
788 vb);
789 struct em28xx_fh *fh = vq->priv_data;
790 struct em28xx *dev = fh->dev;
791 struct em28xx_dmaqueue *vidq = &dev->vidq;
792
793 buf->vb.state = VIDEOBUF_QUEUED;
794 list_add_tail(&buf->vb.queue, &vidq->active);
795
796 }
797
798 static void buffer_release(struct videobuf_queue *vq,
799 struct videobuf_buffer *vb)
800 {
801 struct em28xx_buffer *buf = container_of(vb,
802 struct em28xx_buffer,
803 vb);
804 struct em28xx_fh *fh = vq->priv_data;
805 struct em28xx *dev = (struct em28xx *)fh->dev;
806
807 em28xx_isocdbg("em28xx: called buffer_release\n");
808
809 free_buffer(vq, buf);
810 }
811
812 static struct videobuf_queue_ops em28xx_video_qops = {
813 .buf_setup = buffer_setup,
814 .buf_prepare = buffer_prepare,
815 .buf_queue = buffer_queue,
816 .buf_release = buffer_release,
817 };
818
819 /********************* v4l2 interface **************************************/
820
821 static void video_mux(struct em28xx *dev, int index)
822 {
823 dev->ctl_input = index;
824 dev->ctl_ainput = INPUT(index)->amux;
825 dev->ctl_aoutput = INPUT(index)->aout;
826
827 if (!dev->ctl_aoutput)
828 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
829
830 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
831 INPUT(index)->vmux, 0, 0);
832
833 if (dev->board.has_msp34xx) {
834 if (dev->i2s_speed) {
835 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
836 s_i2s_clock_freq, dev->i2s_speed);
837 }
838 /* Note: this is msp3400 specific */
839 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
840 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
841 }
842
843 if (dev->board.adecoder != EM28XX_NOADECODER) {
844 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
845 dev->ctl_ainput, dev->ctl_aoutput, 0);
846 }
847
848 em28xx_audio_analog_set(dev);
849 }
850
851 /* Usage lock check functions */
852 static int res_get(struct em28xx_fh *fh, unsigned int bit)
853 {
854 struct em28xx *dev = fh->dev;
855
856 if (fh->resources & bit)
857 /* have it already allocated */
858 return 1;
859
860 /* is it free? */
861 mutex_lock(&dev->lock);
862 if (dev->resources & bit) {
863 /* no, someone else uses it */
864 mutex_unlock(&dev->lock);
865 return 0;
866 }
867 /* it's free, grab it */
868 fh->resources |= bit;
869 dev->resources |= bit;
870 em28xx_videodbg("res: get %d\n", bit);
871 mutex_unlock(&dev->lock);
872 return 1;
873 }
874
875 static int res_check(struct em28xx_fh *fh, unsigned int bit)
876 {
877 return fh->resources & bit;
878 }
879
880 static int res_locked(struct em28xx *dev, unsigned int bit)
881 {
882 return dev->resources & bit;
883 }
884
885 static void res_free(struct em28xx_fh *fh, unsigned int bits)
886 {
887 struct em28xx *dev = fh->dev;
888
889 BUG_ON((fh->resources & bits) != bits);
890
891 mutex_lock(&dev->lock);
892 fh->resources &= ~bits;
893 dev->resources &= ~bits;
894 em28xx_videodbg("res: put %d\n", bits);
895 mutex_unlock(&dev->lock);
896 }
897
898 static int get_ressource(struct em28xx_fh *fh)
899 {
900 switch (fh->type) {
901 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
902 return EM28XX_RESOURCE_VIDEO;
903 case V4L2_BUF_TYPE_VBI_CAPTURE:
904 return EM28XX_RESOURCE_VBI;
905 default:
906 BUG();
907 return 0;
908 }
909 }
910
911 /*
912 * ac97_queryctrl()
913 * return the ac97 supported controls
914 */
915 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
916 {
917 int i;
918
919 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
920 if (qc->id && qc->id == ac97_qctrl[i].id) {
921 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
922 return 0;
923 }
924 }
925
926 /* Control is not ac97 related */
927 return 1;
928 }
929
930 /*
931 * ac97_get_ctrl()
932 * return the current values for ac97 mute and volume
933 */
934 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
935 {
936 switch (ctrl->id) {
937 case V4L2_CID_AUDIO_MUTE:
938 ctrl->value = dev->mute;
939 return 0;
940 case V4L2_CID_AUDIO_VOLUME:
941 ctrl->value = dev->volume;
942 return 0;
943 default:
944 /* Control is not ac97 related */
945 return 1;
946 }
947 }
948
949 /*
950 * ac97_set_ctrl()
951 * set values for ac97 mute and volume
952 */
953 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
954 {
955 int i;
956
957 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
958 if (ctrl->id == ac97_qctrl[i].id)
959 goto handle;
960
961 /* Announce that hasn't handle it */
962 return 1;
963
964 handle:
965 if (ctrl->value < ac97_qctrl[i].minimum ||
966 ctrl->value > ac97_qctrl[i].maximum)
967 return -ERANGE;
968
969 switch (ctrl->id) {
970 case V4L2_CID_AUDIO_MUTE:
971 dev->mute = ctrl->value;
972 break;
973 case V4L2_CID_AUDIO_VOLUME:
974 dev->volume = ctrl->value;
975 break;
976 }
977
978 return em28xx_audio_analog_set(dev);
979 }
980
981 static int check_dev(struct em28xx *dev)
982 {
983 if (dev->state & DEV_DISCONNECTED) {
984 em28xx_errdev("v4l2 ioctl: device not present\n");
985 return -ENODEV;
986 }
987
988 if (dev->state & DEV_MISCONFIGURED) {
989 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
990 "close and open it again\n");
991 return -EIO;
992 }
993 return 0;
994 }
995
996 static void get_scale(struct em28xx *dev,
997 unsigned int width, unsigned int height,
998 unsigned int *hscale, unsigned int *vscale)
999 {
1000 unsigned int maxw = norm_maxw(dev);
1001 unsigned int maxh = norm_maxh(dev);
1002
1003 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
1004 if (*hscale >= 0x4000)
1005 *hscale = 0x3fff;
1006
1007 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
1008 if (*vscale >= 0x4000)
1009 *vscale = 0x3fff;
1010 }
1011
1012 /* ------------------------------------------------------------------
1013 IOCTL vidioc handling
1014 ------------------------------------------------------------------*/
1015
1016 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1017 struct v4l2_format *f)
1018 {
1019 struct em28xx_fh *fh = priv;
1020 struct em28xx *dev = fh->dev;
1021
1022 mutex_lock(&dev->lock);
1023
1024 f->fmt.pix.width = dev->width;
1025 f->fmt.pix.height = dev->height;
1026 f->fmt.pix.pixelformat = dev->format->fourcc;
1027 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1028 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
1029 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1030
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
1037 mutex_unlock(&dev->lock);
1038 return 0;
1039 }
1040
1041 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1042 {
1043 unsigned int i;
1044
1045 for (i = 0; i < ARRAY_SIZE(format); i++)
1046 if (format[i].fourcc == fourcc)
1047 return &format[i];
1048
1049 return NULL;
1050 }
1051
1052 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1053 struct v4l2_format *f)
1054 {
1055 struct em28xx_fh *fh = priv;
1056 struct em28xx *dev = fh->dev;
1057 unsigned int width = f->fmt.pix.width;
1058 unsigned int height = f->fmt.pix.height;
1059 unsigned int maxw = norm_maxw(dev);
1060 unsigned int maxh = norm_maxh(dev);
1061 unsigned int hscale, vscale;
1062 struct em28xx_fmt *fmt;
1063
1064 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1065 if (!fmt) {
1066 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1067 f->fmt.pix.pixelformat);
1068 return -EINVAL;
1069 }
1070
1071 if (dev->board.is_em2800) {
1072 /* the em2800 can only scale down to 50% */
1073 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1074 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1075 } else {
1076 /* width must even because of the YUYV format
1077 height must be even because of interlacing */
1078 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1079 1, 0);
1080 }
1081
1082 get_scale(dev, width, height, &hscale, &vscale);
1083
1084 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1085 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1086
1087 f->fmt.pix.width = width;
1088 f->fmt.pix.height = height;
1089 f->fmt.pix.pixelformat = fmt->fourcc;
1090 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1091 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1092 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1093 if (dev->progressive)
1094 f->fmt.pix.field = V4L2_FIELD_NONE;
1095 else
1096 f->fmt.pix.field = dev->interlaced ?
1097 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1098
1099 return 0;
1100 }
1101
1102 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1103 unsigned width, unsigned height)
1104 {
1105 struct em28xx_fmt *fmt;
1106
1107 fmt = format_by_fourcc(fourcc);
1108 if (!fmt)
1109 return -EINVAL;
1110
1111 dev->format = fmt;
1112 dev->width = width;
1113 dev->height = height;
1114
1115 /* set new image size */
1116 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1117
1118 em28xx_set_alternate(dev);
1119 em28xx_resolution_set(dev);
1120
1121 return 0;
1122 }
1123
1124 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1125 struct v4l2_format *f)
1126 {
1127 struct em28xx_fh *fh = priv;
1128 struct em28xx *dev = fh->dev;
1129 int rc;
1130
1131 rc = check_dev(dev);
1132 if (rc < 0)
1133 return rc;
1134
1135 mutex_lock(&dev->lock);
1136
1137 vidioc_try_fmt_vid_cap(file, priv, f);
1138
1139 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1140 em28xx_errdev("%s queue busy\n", __func__);
1141 rc = -EBUSY;
1142 goto out;
1143 }
1144
1145 rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1146 f->fmt.pix.width, f->fmt.pix.height);
1147
1148 out:
1149 mutex_unlock(&dev->lock);
1150 return rc;
1151 }
1152
1153 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1154 {
1155 struct em28xx_fh *fh = priv;
1156 struct em28xx *dev = fh->dev;
1157 int rc;
1158
1159 rc = check_dev(dev);
1160 if (rc < 0)
1161 return rc;
1162
1163 *norm = dev->norm;
1164
1165 return 0;
1166 }
1167
1168 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1169 {
1170 struct em28xx_fh *fh = priv;
1171 struct em28xx *dev = fh->dev;
1172 struct v4l2_format f;
1173 int rc;
1174
1175 rc = check_dev(dev);
1176 if (rc < 0)
1177 return rc;
1178
1179 mutex_lock(&dev->lock);
1180 dev->norm = *norm;
1181
1182 /* Adjusts width/height, if needed */
1183 f.fmt.pix.width = dev->width;
1184 f.fmt.pix.height = dev->height;
1185 vidioc_try_fmt_vid_cap(file, priv, &f);
1186
1187 /* set new image size */
1188 dev->width = f.fmt.pix.width;
1189 dev->height = f.fmt.pix.height;
1190 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1191
1192 em28xx_resolution_set(dev);
1193 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1194
1195 mutex_unlock(&dev->lock);
1196 return 0;
1197 }
1198
1199 static int vidioc_g_parm(struct file *file, void *priv,
1200 struct v4l2_streamparm *p)
1201 {
1202 struct em28xx_fh *fh = priv;
1203 struct em28xx *dev = fh->dev;
1204 int rc = 0;
1205
1206 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1207 return -EINVAL;
1208
1209 if (dev->board.is_webcam)
1210 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1211 video, g_parm, p);
1212 else
1213 v4l2_video_std_frame_period(dev->norm,
1214 &p->parm.capture.timeperframe);
1215
1216 return rc;
1217 }
1218
1219 static int vidioc_s_parm(struct file *file, void *priv,
1220 struct v4l2_streamparm *p)
1221 {
1222 struct em28xx_fh *fh = priv;
1223 struct em28xx *dev = fh->dev;
1224
1225 if (!dev->board.is_webcam)
1226 return -EINVAL;
1227
1228 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1229 return -EINVAL;
1230
1231 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1232 }
1233
1234 static const char *iname[] = {
1235 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1236 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1237 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1238 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1239 [EM28XX_VMUX_SVIDEO] = "S-Video",
1240 [EM28XX_VMUX_TELEVISION] = "Television",
1241 [EM28XX_VMUX_CABLE] = "Cable TV",
1242 [EM28XX_VMUX_DVB] = "DVB",
1243 [EM28XX_VMUX_DEBUG] = "for debug only",
1244 };
1245
1246 static int vidioc_enum_input(struct file *file, void *priv,
1247 struct v4l2_input *i)
1248 {
1249 struct em28xx_fh *fh = priv;
1250 struct em28xx *dev = fh->dev;
1251 unsigned int n;
1252
1253 n = i->index;
1254 if (n >= MAX_EM28XX_INPUT)
1255 return -EINVAL;
1256 if (0 == INPUT(n)->type)
1257 return -EINVAL;
1258
1259 i->index = n;
1260 i->type = V4L2_INPUT_TYPE_CAMERA;
1261
1262 strcpy(i->name, iname[INPUT(n)->type]);
1263
1264 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1265 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1266 i->type = V4L2_INPUT_TYPE_TUNER;
1267
1268 i->std = dev->vdev->tvnorms;
1269
1270 return 0;
1271 }
1272
1273 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1274 {
1275 struct em28xx_fh *fh = priv;
1276 struct em28xx *dev = fh->dev;
1277
1278 *i = dev->ctl_input;
1279
1280 return 0;
1281 }
1282
1283 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1284 {
1285 struct em28xx_fh *fh = priv;
1286 struct em28xx *dev = fh->dev;
1287 int rc;
1288
1289 rc = check_dev(dev);
1290 if (rc < 0)
1291 return rc;
1292
1293 if (i >= MAX_EM28XX_INPUT)
1294 return -EINVAL;
1295 if (0 == INPUT(i)->type)
1296 return -EINVAL;
1297
1298 dev->ctl_input = i;
1299
1300 mutex_lock(&dev->lock);
1301 video_mux(dev, dev->ctl_input);
1302 mutex_unlock(&dev->lock);
1303 return 0;
1304 }
1305
1306 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1307 {
1308 struct em28xx_fh *fh = priv;
1309 struct em28xx *dev = fh->dev;
1310
1311 if (!dev->audio_mode.has_audio)
1312 return -EINVAL;
1313
1314 switch (a->index) {
1315 case EM28XX_AMUX_VIDEO:
1316 strcpy(a->name, "Television");
1317 break;
1318 case EM28XX_AMUX_LINE_IN:
1319 strcpy(a->name, "Line In");
1320 break;
1321 case EM28XX_AMUX_VIDEO2:
1322 strcpy(a->name, "Television alt");
1323 break;
1324 case EM28XX_AMUX_PHONE:
1325 strcpy(a->name, "Phone");
1326 break;
1327 case EM28XX_AMUX_MIC:
1328 strcpy(a->name, "Mic");
1329 break;
1330 case EM28XX_AMUX_CD:
1331 strcpy(a->name, "CD");
1332 break;
1333 case EM28XX_AMUX_AUX:
1334 strcpy(a->name, "Aux");
1335 break;
1336 case EM28XX_AMUX_PCM_OUT:
1337 strcpy(a->name, "PCM");
1338 break;
1339 default:
1340 return -EINVAL;
1341 }
1342
1343 a->index = dev->ctl_ainput;
1344 a->capability = V4L2_AUDCAP_STEREO;
1345
1346 return 0;
1347 }
1348
1349 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1350 {
1351 struct em28xx_fh *fh = priv;
1352 struct em28xx *dev = fh->dev;
1353
1354
1355 if (!dev->audio_mode.has_audio)
1356 return -EINVAL;
1357
1358 if (a->index >= MAX_EM28XX_INPUT)
1359 return -EINVAL;
1360 if (0 == INPUT(a->index)->type)
1361 return -EINVAL;
1362
1363 mutex_lock(&dev->lock);
1364
1365 dev->ctl_ainput = INPUT(a->index)->amux;
1366 dev->ctl_aoutput = INPUT(a->index)->aout;
1367
1368 if (!dev->ctl_aoutput)
1369 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1370
1371 mutex_unlock(&dev->lock);
1372 return 0;
1373 }
1374
1375 static int vidioc_queryctrl(struct file *file, void *priv,
1376 struct v4l2_queryctrl *qc)
1377 {
1378 struct em28xx_fh *fh = priv;
1379 struct em28xx *dev = fh->dev;
1380 int id = qc->id;
1381 int rc;
1382
1383 rc = check_dev(dev);
1384 if (rc < 0)
1385 return rc;
1386
1387 memset(qc, 0, sizeof(*qc));
1388
1389 qc->id = id;
1390
1391 /* enumberate AC97 controls */
1392 if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1393 rc = ac97_queryctrl(qc);
1394 if (!rc)
1395 return 0;
1396 }
1397
1398 /* enumberate V4L2 device controls */
1399 mutex_lock(&dev->lock);
1400 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1401 mutex_unlock(&dev->lock);
1402
1403 if (qc->type)
1404 return 0;
1405 else
1406 return -EINVAL;
1407 }
1408
1409 static int vidioc_g_ctrl(struct file *file, void *priv,
1410 struct v4l2_control *ctrl)
1411 {
1412 struct em28xx_fh *fh = priv;
1413 struct em28xx *dev = fh->dev;
1414 int rc;
1415
1416 rc = check_dev(dev);
1417 if (rc < 0)
1418 return rc;
1419 rc = 0;
1420
1421 mutex_lock(&dev->lock);
1422
1423 /* Set an AC97 control */
1424 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1425 rc = ac97_get_ctrl(dev, ctrl);
1426 else
1427 rc = 1;
1428
1429 /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1430 if (rc == 1) {
1431 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1432 rc = 0;
1433 }
1434
1435 mutex_unlock(&dev->lock);
1436 return rc;
1437 }
1438
1439 static int vidioc_s_ctrl(struct file *file, void *priv,
1440 struct v4l2_control *ctrl)
1441 {
1442 struct em28xx_fh *fh = priv;
1443 struct em28xx *dev = fh->dev;
1444 int rc;
1445
1446 rc = check_dev(dev);
1447 if (rc < 0)
1448 return rc;
1449
1450 mutex_lock(&dev->lock);
1451
1452 /* Set an AC97 control */
1453 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1454 rc = ac97_set_ctrl(dev, ctrl);
1455 else
1456 rc = 1;
1457
1458 /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1459 if (rc == 1) {
1460 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1461
1462 /*
1463 * In the case of non-AC97 volume controls, we still need
1464 * to do some setups at em28xx, in order to mute/unmute
1465 * and to adjust audio volume. However, the value ranges
1466 * should be checked by the corresponding V4L subdriver.
1467 */
1468 switch (ctrl->id) {
1469 case V4L2_CID_AUDIO_MUTE:
1470 dev->mute = ctrl->value;
1471 rc = em28xx_audio_analog_set(dev);
1472 break;
1473 case V4L2_CID_AUDIO_VOLUME:
1474 dev->volume = ctrl->value;
1475 rc = em28xx_audio_analog_set(dev);
1476 }
1477 }
1478
1479 mutex_unlock(&dev->lock);
1480 return rc;
1481 }
1482
1483 static int vidioc_g_tuner(struct file *file, void *priv,
1484 struct v4l2_tuner *t)
1485 {
1486 struct em28xx_fh *fh = priv;
1487 struct em28xx *dev = fh->dev;
1488 int rc;
1489
1490 rc = check_dev(dev);
1491 if (rc < 0)
1492 return rc;
1493
1494 if (0 != t->index)
1495 return -EINVAL;
1496
1497 strcpy(t->name, "Tuner");
1498 t->type = V4L2_TUNER_ANALOG_TV;
1499
1500 mutex_lock(&dev->lock);
1501 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1502 mutex_unlock(&dev->lock);
1503
1504 return 0;
1505 }
1506
1507 static int vidioc_s_tuner(struct file *file, void *priv,
1508 struct v4l2_tuner *t)
1509 {
1510 struct em28xx_fh *fh = priv;
1511 struct em28xx *dev = fh->dev;
1512 int rc;
1513
1514 rc = check_dev(dev);
1515 if (rc < 0)
1516 return rc;
1517
1518 if (0 != t->index)
1519 return -EINVAL;
1520
1521 mutex_lock(&dev->lock);
1522 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1523 mutex_unlock(&dev->lock);
1524
1525 return 0;
1526 }
1527
1528 static int vidioc_g_frequency(struct file *file, void *priv,
1529 struct v4l2_frequency *f)
1530 {
1531 struct em28xx_fh *fh = priv;
1532 struct em28xx *dev = fh->dev;
1533
1534 mutex_lock(&dev->lock);
1535 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1536 f->frequency = dev->ctl_freq;
1537 mutex_unlock(&dev->lock);
1538
1539 return 0;
1540 }
1541
1542 static int vidioc_s_frequency(struct file *file, void *priv,
1543 struct v4l2_frequency *f)
1544 {
1545 struct em28xx_fh *fh = priv;
1546 struct em28xx *dev = fh->dev;
1547 int rc;
1548
1549 rc = check_dev(dev);
1550 if (rc < 0)
1551 return rc;
1552
1553 if (0 != f->tuner)
1554 return -EINVAL;
1555
1556 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1557 return -EINVAL;
1558 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1559 return -EINVAL;
1560
1561 mutex_lock(&dev->lock);
1562
1563 dev->ctl_freq = f->frequency;
1564 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1565
1566 mutex_unlock(&dev->lock);
1567
1568 return 0;
1569 }
1570
1571 #ifdef CONFIG_VIDEO_ADV_DEBUG
1572 static int em28xx_reg_len(int reg)
1573 {
1574 switch (reg) {
1575 case EM28XX_R40_AC97LSB:
1576 case EM28XX_R30_HSCALELOW:
1577 case EM28XX_R32_VSCALELOW:
1578 return 2;
1579 default:
1580 return 1;
1581 }
1582 }
1583
1584 static int vidioc_g_chip_ident(struct file *file, void *priv,
1585 struct v4l2_dbg_chip_ident *chip)
1586 {
1587 struct em28xx_fh *fh = priv;
1588 struct em28xx *dev = fh->dev;
1589
1590 chip->ident = V4L2_IDENT_NONE;
1591 chip->revision = 0;
1592
1593 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1594
1595 return 0;
1596 }
1597
1598
1599 static int vidioc_g_register(struct file *file, void *priv,
1600 struct v4l2_dbg_register *reg)
1601 {
1602 struct em28xx_fh *fh = priv;
1603 struct em28xx *dev = fh->dev;
1604 int ret;
1605
1606 switch (reg->match.type) {
1607 case V4L2_CHIP_MATCH_AC97:
1608 mutex_lock(&dev->lock);
1609 ret = em28xx_read_ac97(dev, reg->reg);
1610 mutex_unlock(&dev->lock);
1611 if (ret < 0)
1612 return ret;
1613
1614 reg->val = ret;
1615 reg->size = 1;
1616 return 0;
1617 case V4L2_CHIP_MATCH_I2C_DRIVER:
1618 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1619 return 0;
1620 case V4L2_CHIP_MATCH_I2C_ADDR:
1621 /* TODO: is this correct? */
1622 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1623 return 0;
1624 default:
1625 if (!v4l2_chip_match_host(&reg->match))
1626 return -EINVAL;
1627 }
1628
1629 /* Match host */
1630 reg->size = em28xx_reg_len(reg->reg);
1631 if (reg->size == 1) {
1632 mutex_lock(&dev->lock);
1633 ret = em28xx_read_reg(dev, reg->reg);
1634 mutex_unlock(&dev->lock);
1635
1636 if (ret < 0)
1637 return ret;
1638
1639 reg->val = ret;
1640 } else {
1641 __le16 val = 0;
1642 mutex_lock(&dev->lock);
1643 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1644 reg->reg, (char *)&val, 2);
1645 mutex_unlock(&dev->lock);
1646 if (ret < 0)
1647 return ret;
1648
1649 reg->val = le16_to_cpu(val);
1650 }
1651
1652 return 0;
1653 }
1654
1655 static int vidioc_s_register(struct file *file, void *priv,
1656 struct v4l2_dbg_register *reg)
1657 {
1658 struct em28xx_fh *fh = priv;
1659 struct em28xx *dev = fh->dev;
1660 __le16 buf;
1661 int rc;
1662
1663 switch (reg->match.type) {
1664 case V4L2_CHIP_MATCH_AC97:
1665 mutex_lock(&dev->lock);
1666 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1667 mutex_unlock(&dev->lock);
1668
1669 return rc;
1670 case V4L2_CHIP_MATCH_I2C_DRIVER:
1671 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1672 return 0;
1673 case V4L2_CHIP_MATCH_I2C_ADDR:
1674 /* TODO: is this correct? */
1675 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1676 return 0;
1677 default:
1678 if (!v4l2_chip_match_host(&reg->match))
1679 return -EINVAL;
1680 }
1681
1682 /* Match host */
1683 buf = cpu_to_le16(reg->val);
1684
1685 mutex_lock(&dev->lock);
1686 rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1687 em28xx_reg_len(reg->reg));
1688 mutex_unlock(&dev->lock);
1689
1690 return rc;
1691 }
1692 #endif
1693
1694
1695 static int vidioc_cropcap(struct file *file, void *priv,
1696 struct v4l2_cropcap *cc)
1697 {
1698 struct em28xx_fh *fh = priv;
1699 struct em28xx *dev = fh->dev;
1700
1701 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1702 return -EINVAL;
1703
1704 cc->bounds.left = 0;
1705 cc->bounds.top = 0;
1706 cc->bounds.width = dev->width;
1707 cc->bounds.height = dev->height;
1708 cc->defrect = cc->bounds;
1709 cc->pixelaspect.numerator = 54;
1710 cc->pixelaspect.denominator = 59;
1711
1712 return 0;
1713 }
1714
1715 static int vidioc_streamon(struct file *file, void *priv,
1716 enum v4l2_buf_type type)
1717 {
1718 struct em28xx_fh *fh = priv;
1719 struct em28xx *dev = fh->dev;
1720 int rc = -EINVAL;
1721
1722 rc = check_dev(dev);
1723 if (rc < 0)
1724 return rc;
1725
1726 if (unlikely(type != fh->type))
1727 return -EINVAL;
1728
1729 em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1730 fh, type, fh->resources, dev->resources);
1731
1732 if (unlikely(!res_get(fh, get_ressource(fh))))
1733 return -EBUSY;
1734
1735 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1736 rc = videobuf_streamon(&fh->vb_vidq);
1737 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1738 rc = videobuf_streamon(&fh->vb_vbiq);
1739
1740 return rc;
1741 }
1742
1743 static int vidioc_streamoff(struct file *file, void *priv,
1744 enum v4l2_buf_type type)
1745 {
1746 struct em28xx_fh *fh = priv;
1747 struct em28xx *dev = fh->dev;
1748 int rc;
1749
1750 rc = check_dev(dev);
1751 if (rc < 0)
1752 return rc;
1753
1754 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1755 fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1756 return -EINVAL;
1757 if (type != fh->type)
1758 return -EINVAL;
1759
1760 em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1761 fh, type, fh->resources, dev->resources);
1762
1763 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1764 videobuf_streamoff(&fh->vb_vidq);
1765 res_free(fh, EM28XX_RESOURCE_VIDEO);
1766 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1767 videobuf_streamoff(&fh->vb_vbiq);
1768 res_free(fh, EM28XX_RESOURCE_VBI);
1769 }
1770
1771 return 0;
1772 }
1773
1774 static int vidioc_querycap(struct file *file, void *priv,
1775 struct v4l2_capability *cap)
1776 {
1777 struct em28xx_fh *fh = priv;
1778 struct em28xx *dev = fh->dev;
1779
1780 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1781 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1782 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1783
1784 cap->version = EM28XX_VERSION_CODE;
1785
1786 cap->capabilities =
1787 V4L2_CAP_SLICED_VBI_CAPTURE |
1788 V4L2_CAP_VIDEO_CAPTURE |
1789 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1790
1791 if (dev->vbi_dev)
1792 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1793
1794 if (dev->audio_mode.has_audio)
1795 cap->capabilities |= V4L2_CAP_AUDIO;
1796
1797 if (dev->tuner_type != TUNER_ABSENT)
1798 cap->capabilities |= V4L2_CAP_TUNER;
1799
1800 return 0;
1801 }
1802
1803 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1804 struct v4l2_fmtdesc *f)
1805 {
1806 if (unlikely(f->index >= ARRAY_SIZE(format)))
1807 return -EINVAL;
1808
1809 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1810 f->pixelformat = format[f->index].fourcc;
1811
1812 return 0;
1813 }
1814
1815 /* Sliced VBI ioctls */
1816 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1817 struct v4l2_format *f)
1818 {
1819 struct em28xx_fh *fh = priv;
1820 struct em28xx *dev = fh->dev;
1821 int rc;
1822
1823 rc = check_dev(dev);
1824 if (rc < 0)
1825 return rc;
1826
1827 mutex_lock(&dev->lock);
1828
1829 f->fmt.sliced.service_set = 0;
1830 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1831
1832 if (f->fmt.sliced.service_set == 0)
1833 rc = -EINVAL;
1834
1835 mutex_unlock(&dev->lock);
1836
1837 return rc;
1838 }
1839
1840 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1841 struct v4l2_format *f)
1842 {
1843 struct em28xx_fh *fh = priv;
1844 struct em28xx *dev = fh->dev;
1845 int rc;
1846
1847 rc = check_dev(dev);
1848 if (rc < 0)
1849 return rc;
1850
1851 mutex_lock(&dev->lock);
1852 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1853 mutex_unlock(&dev->lock);
1854
1855 if (f->fmt.sliced.service_set == 0)
1856 return -EINVAL;
1857
1858 return 0;
1859 }
1860
1861 /* RAW VBI ioctls */
1862
1863 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1864 struct v4l2_format *format)
1865 {
1866 struct em28xx_fh *fh = priv;
1867 struct em28xx *dev = fh->dev;
1868
1869 format->fmt.vbi.samples_per_line = dev->vbi_width;
1870 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1871 format->fmt.vbi.offset = 0;
1872 format->fmt.vbi.flags = 0;
1873 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1874 format->fmt.vbi.count[0] = dev->vbi_height;
1875 format->fmt.vbi.count[1] = dev->vbi_height;
1876
1877 /* Varies by video standard (NTSC, PAL, etc.) */
1878 if (dev->norm & V4L2_STD_525_60) {
1879 /* NTSC */
1880 format->fmt.vbi.start[0] = 10;
1881 format->fmt.vbi.start[1] = 273;
1882 } else if (dev->norm & V4L2_STD_625_50) {
1883 /* PAL */
1884 format->fmt.vbi.start[0] = 6;
1885 format->fmt.vbi.start[1] = 318;
1886 }
1887
1888 return 0;
1889 }
1890
1891 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1892 struct v4l2_format *format)
1893 {
1894 struct em28xx_fh *fh = priv;
1895 struct em28xx *dev = fh->dev;
1896
1897 format->fmt.vbi.samples_per_line = dev->vbi_width;
1898 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1899 format->fmt.vbi.offset = 0;
1900 format->fmt.vbi.flags = 0;
1901 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1902 format->fmt.vbi.count[0] = dev->vbi_height;
1903 format->fmt.vbi.count[1] = dev->vbi_height;
1904
1905 /* Varies by video standard (NTSC, PAL, etc.) */
1906 if (dev->norm & V4L2_STD_525_60) {
1907 /* NTSC */
1908 format->fmt.vbi.start[0] = 10;
1909 format->fmt.vbi.start[1] = 273;
1910 } else if (dev->norm & V4L2_STD_625_50) {
1911 /* PAL */
1912 format->fmt.vbi.start[0] = 6;
1913 format->fmt.vbi.start[1] = 318;
1914 }
1915
1916 return 0;
1917 }
1918
1919 static int vidioc_reqbufs(struct file *file, void *priv,
1920 struct v4l2_requestbuffers *rb)
1921 {
1922 struct em28xx_fh *fh = priv;
1923 struct em28xx *dev = fh->dev;
1924 int rc;
1925
1926 rc = check_dev(dev);
1927 if (rc < 0)
1928 return rc;
1929
1930 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1931 return videobuf_reqbufs(&fh->vb_vidq, rb);
1932 else
1933 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1934 }
1935
1936 static int vidioc_querybuf(struct file *file, void *priv,
1937 struct v4l2_buffer *b)
1938 {
1939 struct em28xx_fh *fh = priv;
1940 struct em28xx *dev = fh->dev;
1941 int rc;
1942
1943 rc = check_dev(dev);
1944 if (rc < 0)
1945 return rc;
1946
1947 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1948 return videobuf_querybuf(&fh->vb_vidq, b);
1949 else {
1950 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1951 b->length = dev->vbi_width * dev->vbi_height * 2;
1952
1953 return result;
1954 }
1955 }
1956
1957 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1958 {
1959 struct em28xx_fh *fh = priv;
1960 struct em28xx *dev = fh->dev;
1961 int rc;
1962
1963 rc = check_dev(dev);
1964 if (rc < 0)
1965 return rc;
1966
1967 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1968 return videobuf_qbuf(&fh->vb_vidq, b);
1969 else
1970 return videobuf_qbuf(&fh->vb_vbiq, b);
1971 }
1972
1973 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1974 {
1975 struct em28xx_fh *fh = priv;
1976 struct em28xx *dev = fh->dev;
1977 int rc;
1978
1979 rc = check_dev(dev);
1980 if (rc < 0)
1981 return rc;
1982
1983 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1984 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1985 O_NONBLOCK);
1986 else
1987 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1988 O_NONBLOCK);
1989 }
1990
1991 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1992 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1993 {
1994 struct em28xx_fh *fh = priv;
1995
1996 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1997 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1998 else
1999 return videobuf_cgmbuf(&fh->vb_vbiq, mbuf, 8);
2000 }
2001 #endif
2002
2003
2004 /* ----------------------------------------------------------- */
2005 /* RADIO ESPECIFIC IOCTLS */
2006 /* ----------------------------------------------------------- */
2007
2008 static int radio_querycap(struct file *file, void *priv,
2009 struct v4l2_capability *cap)
2010 {
2011 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2012
2013 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
2014 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
2015 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
2016
2017 cap->version = EM28XX_VERSION_CODE;
2018 cap->capabilities = V4L2_CAP_TUNER;
2019 return 0;
2020 }
2021
2022 static int radio_g_tuner(struct file *file, void *priv,
2023 struct v4l2_tuner *t)
2024 {
2025 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2026
2027 if (unlikely(t->index > 0))
2028 return -EINVAL;
2029
2030 strcpy(t->name, "Radio");
2031 t->type = V4L2_TUNER_RADIO;
2032
2033 mutex_lock(&dev->lock);
2034 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
2035 mutex_unlock(&dev->lock);
2036
2037 return 0;
2038 }
2039
2040 static int radio_enum_input(struct file *file, void *priv,
2041 struct v4l2_input *i)
2042 {
2043 if (i->index != 0)
2044 return -EINVAL;
2045 strcpy(i->name, "Radio");
2046 i->type = V4L2_INPUT_TYPE_TUNER;
2047
2048 return 0;
2049 }
2050
2051 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2052 {
2053 if (unlikely(a->index))
2054 return -EINVAL;
2055
2056 strcpy(a->name, "Radio");
2057 return 0;
2058 }
2059
2060 static int radio_s_tuner(struct file *file, void *priv,
2061 struct v4l2_tuner *t)
2062 {
2063 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2064
2065 if (0 != t->index)
2066 return -EINVAL;
2067
2068 mutex_lock(&dev->lock);
2069 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2070 mutex_unlock(&dev->lock);
2071
2072 return 0;
2073 }
2074
2075 static int radio_s_audio(struct file *file, void *fh,
2076 struct v4l2_audio *a)
2077 {
2078 return 0;
2079 }
2080
2081 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2082 {
2083 return 0;
2084 }
2085
2086 static int radio_queryctrl(struct file *file, void *priv,
2087 struct v4l2_queryctrl *qc)
2088 {
2089 int i;
2090
2091 if (qc->id < V4L2_CID_BASE ||
2092 qc->id >= V4L2_CID_LASTP1)
2093 return -EINVAL;
2094
2095 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2096 if (qc->id && qc->id == ac97_qctrl[i].id) {
2097 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2098 return 0;
2099 }
2100 }
2101
2102 return -EINVAL;
2103 }
2104
2105 /*
2106 * em28xx_v4l2_open()
2107 * inits the device and starts isoc transfer
2108 */
2109 static int em28xx_v4l2_open(struct file *filp)
2110 {
2111 int errCode = 0, radio = 0;
2112 struct video_device *vdev = video_devdata(filp);
2113 struct em28xx *dev = video_drvdata(filp);
2114 enum v4l2_buf_type fh_type = 0;
2115 struct em28xx_fh *fh;
2116 enum v4l2_field field;
2117
2118 switch (vdev->vfl_type) {
2119 case VFL_TYPE_GRABBER:
2120 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2121 break;
2122 case VFL_TYPE_VBI:
2123 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
2124 break;
2125 case VFL_TYPE_RADIO:
2126 radio = 1;
2127 break;
2128 }
2129
2130 mutex_lock(&dev->lock);
2131
2132 em28xx_videodbg("open dev=%s type=%s users=%d\n",
2133 video_device_node_name(vdev), v4l2_type_names[fh_type],
2134 dev->users);
2135
2136
2137 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2138 if (!fh) {
2139 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2140 mutex_unlock(&dev->lock);
2141 return -ENOMEM;
2142 }
2143 fh->dev = dev;
2144 fh->radio = radio;
2145 fh->type = fh_type;
2146 filp->private_data = fh;
2147
2148 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2149 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2150 em28xx_set_alternate(dev);
2151 em28xx_resolution_set(dev);
2152
2153 /* Needed, since GPIO might have disabled power of
2154 some i2c device
2155 */
2156 em28xx_wake_i2c(dev);
2157
2158 }
2159 if (fh->radio) {
2160 em28xx_videodbg("video_open: setting radio device\n");
2161 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2162 }
2163
2164 dev->users++;
2165
2166 if (dev->progressive)
2167 field = V4L2_FIELD_NONE;
2168 else
2169 field = V4L2_FIELD_INTERLACED;
2170
2171 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2172 NULL, &dev->slock,
2173 V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2174 sizeof(struct em28xx_buffer), fh);
2175
2176 videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2177 NULL, &dev->slock,
2178 V4L2_BUF_TYPE_VBI_CAPTURE,
2179 V4L2_FIELD_SEQ_TB,
2180 sizeof(struct em28xx_buffer), fh);
2181
2182 mutex_unlock(&dev->lock);
2183
2184 return errCode;
2185 }
2186
2187 /*
2188 * em28xx_realease_resources()
2189 * unregisters the v4l2,i2c and usb devices
2190 * called when the device gets disconected or at module unload
2191 */
2192 void em28xx_release_analog_resources(struct em28xx *dev)
2193 {
2194
2195
2196 if (dev->radio_dev) {
2197 if (video_is_registered(dev->radio_dev))
2198 video_unregister_device(dev->radio_dev);
2199 else
2200 video_device_release(dev->radio_dev);
2201 dev->radio_dev = NULL;
2202 }
2203 if (dev->vbi_dev) {
2204 em28xx_info("V4L2 device %s deregistered\n",
2205 video_device_node_name(dev->vbi_dev));
2206 if (video_is_registered(dev->vbi_dev))
2207 video_unregister_device(dev->vbi_dev);
2208 else
2209 video_device_release(dev->vbi_dev);
2210 dev->vbi_dev = NULL;
2211 }
2212 if (dev->vdev) {
2213 em28xx_info("V4L2 device %s deregistered\n",
2214 video_device_node_name(dev->vdev));
2215 if (video_is_registered(dev->vdev))
2216 video_unregister_device(dev->vdev);
2217 else
2218 video_device_release(dev->vdev);
2219 dev->vdev = NULL;
2220 }
2221 }
2222
2223 /*
2224 * em28xx_v4l2_close()
2225 * stops streaming and deallocates all resources allocated by the v4l2
2226 * calls and ioctls
2227 */
2228 static int em28xx_v4l2_close(struct file *filp)
2229 {
2230 struct em28xx_fh *fh = filp->private_data;
2231 struct em28xx *dev = fh->dev;
2232 int errCode;
2233
2234 em28xx_videodbg("users=%d\n", dev->users);
2235
2236 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2237 videobuf_stop(&fh->vb_vidq);
2238 res_free(fh, EM28XX_RESOURCE_VIDEO);
2239 }
2240
2241 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2242 videobuf_stop(&fh->vb_vbiq);
2243 res_free(fh, EM28XX_RESOURCE_VBI);
2244 }
2245
2246 if (dev->users == 1) {
2247 /* the device is already disconnect,
2248 free the remaining resources */
2249 if (dev->state & DEV_DISCONNECTED) {
2250 em28xx_release_resources(dev);
2251 kfree(dev);
2252 return 0;
2253 }
2254
2255 /* Save some power by putting tuner to sleep */
2256 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2257
2258 /* do this before setting alternate! */
2259 em28xx_uninit_isoc(dev);
2260 em28xx_set_mode(dev, EM28XX_SUSPEND);
2261
2262 /* set alternate 0 */
2263 dev->alt = 0;
2264 em28xx_videodbg("setting alternate 0\n");
2265 errCode = usb_set_interface(dev->udev, 0, 0);
2266 if (errCode < 0) {
2267 em28xx_errdev("cannot change alternate number to "
2268 "0 (error=%i)\n", errCode);
2269 }
2270 }
2271
2272 videobuf_mmap_free(&fh->vb_vidq);
2273 videobuf_mmap_free(&fh->vb_vbiq);
2274 kfree(fh);
2275 dev->users--;
2276 wake_up_interruptible_nr(&dev->open, 1);
2277 return 0;
2278 }
2279
2280 /*
2281 * em28xx_v4l2_read()
2282 * will allocate buffers when called for the first time
2283 */
2284 static ssize_t
2285 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2286 loff_t *pos)
2287 {
2288 struct em28xx_fh *fh = filp->private_data;
2289 struct em28xx *dev = fh->dev;
2290 int rc;
2291
2292 rc = check_dev(dev);
2293 if (rc < 0)
2294 return rc;
2295
2296
2297 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2298 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2299 return -EBUSY;
2300
2301 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2302 filp->f_flags & O_NONBLOCK);
2303 }
2304
2305
2306 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2307 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2308 return -EBUSY;
2309
2310 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2311 filp->f_flags & O_NONBLOCK);
2312 }
2313
2314 return 0;
2315 }
2316
2317 /*
2318 * em28xx_v4l2_poll()
2319 * will allocate buffers when called for the first time
2320 */
2321 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2322 {
2323 struct em28xx_fh *fh = filp->private_data;
2324 struct em28xx *dev = fh->dev;
2325 int rc;
2326
2327 rc = check_dev(dev);
2328 if (rc < 0)
2329 return rc;
2330
2331 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2332 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2333 return POLLERR;
2334 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2335 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2336 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2337 return POLLERR;
2338 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2339 } else {
2340 return POLLERR;
2341 }
2342 }
2343
2344 /*
2345 * em28xx_v4l2_mmap()
2346 */
2347 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2348 {
2349 struct em28xx_fh *fh = filp->private_data;
2350 struct em28xx *dev = fh->dev;
2351 int rc;
2352
2353 rc = check_dev(dev);
2354 if (rc < 0)
2355 return rc;
2356
2357 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2358 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2359 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2360 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2361
2362 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2363 (unsigned long)vma->vm_start,
2364 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2365 rc);
2366
2367 return rc;
2368 }
2369
2370 static const struct v4l2_file_operations em28xx_v4l_fops = {
2371 .owner = THIS_MODULE,
2372 .open = em28xx_v4l2_open,
2373 .release = em28xx_v4l2_close,
2374 .read = em28xx_v4l2_read,
2375 .poll = em28xx_v4l2_poll,
2376 .mmap = em28xx_v4l2_mmap,
2377 .ioctl = video_ioctl2,
2378 };
2379
2380 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2381 .vidioc_querycap = vidioc_querycap,
2382 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2383 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2384 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2385 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2386 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2387 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
2388 .vidioc_g_audio = vidioc_g_audio,
2389 .vidioc_s_audio = vidioc_s_audio,
2390 .vidioc_cropcap = vidioc_cropcap,
2391
2392 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2393 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2394 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2395
2396 .vidioc_reqbufs = vidioc_reqbufs,
2397 .vidioc_querybuf = vidioc_querybuf,
2398 .vidioc_qbuf = vidioc_qbuf,
2399 .vidioc_dqbuf = vidioc_dqbuf,
2400 .vidioc_g_std = vidioc_g_std,
2401 .vidioc_s_std = vidioc_s_std,
2402 .vidioc_g_parm = vidioc_g_parm,
2403 .vidioc_s_parm = vidioc_s_parm,
2404 .vidioc_enum_input = vidioc_enum_input,
2405 .vidioc_g_input = vidioc_g_input,
2406 .vidioc_s_input = vidioc_s_input,
2407 .vidioc_queryctrl = vidioc_queryctrl,
2408 .vidioc_g_ctrl = vidioc_g_ctrl,
2409 .vidioc_s_ctrl = vidioc_s_ctrl,
2410 .vidioc_streamon = vidioc_streamon,
2411 .vidioc_streamoff = vidioc_streamoff,
2412 .vidioc_g_tuner = vidioc_g_tuner,
2413 .vidioc_s_tuner = vidioc_s_tuner,
2414 .vidioc_g_frequency = vidioc_g_frequency,
2415 .vidioc_s_frequency = vidioc_s_frequency,
2416 #ifdef CONFIG_VIDEO_ADV_DEBUG
2417 .vidioc_g_register = vidioc_g_register,
2418 .vidioc_s_register = vidioc_s_register,
2419 .vidioc_g_chip_ident = vidioc_g_chip_ident,
2420 #endif
2421 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2422 .vidiocgmbuf = vidiocgmbuf,
2423 #endif
2424 };
2425
2426 static const struct video_device em28xx_video_template = {
2427 .fops = &em28xx_v4l_fops,
2428 .release = video_device_release,
2429 .ioctl_ops = &video_ioctl_ops,
2430
2431 .tvnorms = V4L2_STD_ALL,
2432 .current_norm = V4L2_STD_PAL,
2433 };
2434
2435 static const struct v4l2_file_operations radio_fops = {
2436 .owner = THIS_MODULE,
2437 .open = em28xx_v4l2_open,
2438 .release = em28xx_v4l2_close,
2439 .ioctl = video_ioctl2,
2440 };
2441
2442 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2443 .vidioc_querycap = radio_querycap,
2444 .vidioc_g_tuner = radio_g_tuner,
2445 .vidioc_enum_input = radio_enum_input,
2446 .vidioc_g_audio = radio_g_audio,
2447 .vidioc_s_tuner = radio_s_tuner,
2448 .vidioc_s_audio = radio_s_audio,
2449 .vidioc_s_input = radio_s_input,
2450 .vidioc_queryctrl = radio_queryctrl,
2451 .vidioc_g_ctrl = vidioc_g_ctrl,
2452 .vidioc_s_ctrl = vidioc_s_ctrl,
2453 .vidioc_g_frequency = vidioc_g_frequency,
2454 .vidioc_s_frequency = vidioc_s_frequency,
2455 #ifdef CONFIG_VIDEO_ADV_DEBUG
2456 .vidioc_g_register = vidioc_g_register,
2457 .vidioc_s_register = vidioc_s_register,
2458 #endif
2459 };
2460
2461 static struct video_device em28xx_radio_template = {
2462 .name = "em28xx-radio",
2463 .fops = &radio_fops,
2464 .ioctl_ops = &radio_ioctl_ops,
2465 };
2466
2467 /******************************** usb interface ******************************/
2468
2469
2470
2471 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2472 const struct video_device *template,
2473 const char *type_name)
2474 {
2475 struct video_device *vfd;
2476
2477 vfd = video_device_alloc();
2478 if (NULL == vfd)
2479 return NULL;
2480
2481 *vfd = *template;
2482 vfd->v4l2_dev = &dev->v4l2_dev;
2483 vfd->release = video_device_release;
2484 vfd->debug = video_debug;
2485
2486 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2487 dev->name, type_name);
2488
2489 video_set_drvdata(vfd, dev);
2490 return vfd;
2491 }
2492
2493 int em28xx_register_analog_devices(struct em28xx *dev)
2494 {
2495 u8 val;
2496 int ret;
2497
2498 printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2499 dev->name,
2500 (EM28XX_VERSION_CODE >> 16) & 0xff,
2501 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2502
2503 /* set default norm */
2504 dev->norm = em28xx_video_template.current_norm;
2505 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2506 dev->ctl_input = 0;
2507
2508 /* Analog specific initialization */
2509 dev->format = &format[0];
2510 em28xx_set_video_format(dev, format[0].fourcc,
2511 norm_maxw(dev), norm_maxh(dev));
2512
2513 video_mux(dev, dev->ctl_input);
2514
2515 /* Audio defaults */
2516 dev->mute = 1;
2517 dev->volume = 0x1f;
2518
2519 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2520 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2521 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2522 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2523
2524 em28xx_set_outfmt(dev);
2525 em28xx_colorlevels_set_default(dev);
2526 em28xx_compression_disable(dev);
2527
2528 /* allocate and fill video video_device struct */
2529 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2530 if (!dev->vdev) {
2531 em28xx_errdev("cannot allocate video_device.\n");
2532 return -ENODEV;
2533 }
2534
2535 /* register v4l2 video video_device */
2536 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2537 video_nr[dev->devno]);
2538 if (ret) {
2539 em28xx_errdev("unable to register video device (error=%i).\n",
2540 ret);
2541 return ret;
2542 }
2543
2544 /* Allocate and fill vbi video_device struct */
2545 if (em28xx_vbi_supported(dev) == 1) {
2546 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2547 "vbi");
2548
2549 /* register v4l2 vbi video_device */
2550 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2551 vbi_nr[dev->devno]);
2552 if (ret < 0) {
2553 em28xx_errdev("unable to register vbi device\n");
2554 return ret;
2555 }
2556 }
2557
2558 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2559 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2560 "radio");
2561 if (!dev->radio_dev) {
2562 em28xx_errdev("cannot allocate video_device.\n");
2563 return -ENODEV;
2564 }
2565 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2566 radio_nr[dev->devno]);
2567 if (ret < 0) {
2568 em28xx_errdev("can't register radio device\n");
2569 return ret;
2570 }
2571 em28xx_info("Registered radio device as %s\n",
2572 video_device_node_name(dev->radio_dev));
2573 }
2574
2575 em28xx_info("V4L2 video device registered as %s\n",
2576 video_device_node_name(dev->vdev));
2577
2578 if (dev->vbi_dev)
2579 em28xx_info("V4L2 VBI device registered as %s\n",
2580 video_device_node_name(dev->vbi_dev));
2581
2582 return 0;
2583 }
Tomato firmware and modifications.