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Fix common misspellings
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / em28xx / em28xx-video.c
1 /*
2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3 video capture devices
4
5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
7 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Sascha Sommer <saschasommer@freenet.de>
9
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;
281
282 if (dev == NULL) {
283 em28xx_isocdbg("dev is null\n");
284 return;
285 }
286 bytesperline = dev->vbi_width;
287
288 if (dma_q == NULL) {
289 em28xx_isocdbg("dma_q is null\n");
290 return;
291 }
292 if (buf == NULL) {
293 return;
294 }
295 if (p == NULL) {
296 em28xx_isocdbg("p is null\n");
297 return;
298 }
299 if (outp == NULL) {
300 em28xx_isocdbg("outp is null\n");
301 return;
302 }
303
304 if (dma_q->pos + len > buf->vb.size)
305 len = buf->vb.size - dma_q->pos;
306
307 startread = p;
308
309 startwrite = outp + dma_q->pos;
310 offset = dma_q->pos;
311
312 /* Make sure the bottom field populates the second half of the frame */
313 if (buf->top_field == 0) {
314 startwrite += bytesperline * dev->vbi_height;
315 offset += bytesperline * dev->vbi_height;
316 }
317
318 memcpy(startwrite, startread, len);
319 dma_q->pos += len;
320 }
321
322 static inline void print_err_status(struct em28xx *dev,
323 int packet, int status)
324 {
325 char *errmsg = "Unknown";
326
327 switch (status) {
328 case -ENOENT:
329 errmsg = "unlinked synchronuously";
330 break;
331 case -ECONNRESET:
332 errmsg = "unlinked asynchronuously";
333 break;
334 case -ENOSR:
335 errmsg = "Buffer error (overrun)";
336 break;
337 case -EPIPE:
338 errmsg = "Stalled (device not responding)";
339 break;
340 case -EOVERFLOW:
341 errmsg = "Babble (bad cable?)";
342 break;
343 case -EPROTO:
344 errmsg = "Bit-stuff error (bad cable?)";
345 break;
346 case -EILSEQ:
347 errmsg = "CRC/Timeout (could be anything)";
348 break;
349 case -ETIME:
350 errmsg = "Device does not respond";
351 break;
352 }
353 if (packet < 0) {
354 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
355 } else {
356 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
357 packet, status, errmsg);
358 }
359 }
360
361 /*
362 * video-buf generic routine to get the next available buffer
363 */
364 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
365 struct em28xx_buffer **buf)
366 {
367 struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
368 char *outp;
369
370 if (list_empty(&dma_q->active)) {
371 em28xx_isocdbg("No active queue to serve\n");
372 dev->isoc_ctl.vid_buf = NULL;
373 *buf = NULL;
374 return;
375 }
376
377 /* Get the next buffer */
378 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
379
380 /* Cleans up buffer - Useful for testing for frame/URB loss */
381 outp = videobuf_to_vmalloc(&(*buf)->vb);
382 memset(outp, 0, (*buf)->vb.size);
383
384 dev->isoc_ctl.vid_buf = *buf;
385
386 return;
387 }
388
389 /*
390 * video-buf generic routine to get the next available VBI buffer
391 */
392 static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q,
393 struct em28xx_buffer **buf)
394 {
395 struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq);
396 char *outp;
397
398 if (list_empty(&dma_q->active)) {
399 em28xx_isocdbg("No active queue to serve\n");
400 dev->isoc_ctl.vbi_buf = NULL;
401 *buf = NULL;
402 return;
403 }
404
405 /* Get the next buffer */
406 *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
407 /* Cleans up buffer - Useful for testing for frame/URB loss */
408 outp = videobuf_to_vmalloc(&(*buf)->vb);
409 memset(outp, 0x00, (*buf)->vb.size);
410
411 dev->isoc_ctl.vbi_buf = *buf;
412
413 return;
414 }
415
416 /*
417 * Controls the isoc copy of each urb packet
418 */
419 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
420 {
421 struct em28xx_buffer *buf;
422 struct em28xx_dmaqueue *dma_q = &dev->vidq;
423 unsigned char *outp = NULL;
424 int i, len = 0, rc = 1;
425 unsigned char *p;
426
427 if (!dev)
428 return 0;
429
430 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
431 return 0;
432
433 if (urb->status < 0) {
434 print_err_status(dev, -1, urb->status);
435 if (urb->status == -ENOENT)
436 return 0;
437 }
438
439 buf = dev->isoc_ctl.vid_buf;
440 if (buf != NULL)
441 outp = videobuf_to_vmalloc(&buf->vb);
442
443 for (i = 0; i < urb->number_of_packets; i++) {
444 int status = urb->iso_frame_desc[i].status;
445
446 if (status < 0) {
447 print_err_status(dev, i, status);
448 if (urb->iso_frame_desc[i].status != -EPROTO)
449 continue;
450 }
451
452 len = urb->iso_frame_desc[i].actual_length - 4;
453
454 if (urb->iso_frame_desc[i].actual_length <= 0) {
455 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
456 continue;
457 }
458 if (urb->iso_frame_desc[i].actual_length >
459 dev->max_pkt_size) {
460 em28xx_isocdbg("packet bigger than packet size");
461 continue;
462 }
463
464 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
465
466 /* FIXME: incomplete buffer checks where removed to make
467 logic simpler. Impacts of those changes should be evaluated
468 */
469 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
470 em28xx_isocdbg("VBI HEADER!!!\n");
471 /* FIXME: Should add vbi copy */
472 continue;
473 }
474 if (p[0] == 0x22 && p[1] == 0x5a) {
475 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
476 len, (p[2] & 1) ? "odd" : "even");
477
478 if (dev->progressive || !(p[2] & 1)) {
479 if (buf != NULL)
480 buffer_filled(dev, dma_q, buf);
481 get_next_buf(dma_q, &buf);
482 if (buf == NULL)
483 outp = NULL;
484 else
485 outp = videobuf_to_vmalloc(&buf->vb);
486 }
487
488 if (buf != NULL) {
489 if (p[2] & 1)
490 buf->top_field = 0;
491 else
492 buf->top_field = 1;
493 }
494
495 dma_q->pos = 0;
496 }
497 if (buf != NULL) {
498 if (p[0] != 0x88 && p[0] != 0x22) {
499 em28xx_isocdbg("frame is not complete\n");
500 len += 4;
501 } else {
502 p += 4;
503 }
504 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
505 }
506 }
507 return rc;
508 }
509
510 /* Version of isoc handler that takes into account a mixture of video and
511 VBI data */
512 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
513 {
514 struct em28xx_buffer *buf, *vbi_buf;
515 struct em28xx_dmaqueue *dma_q = &dev->vidq;
516 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
517 unsigned char *outp = NULL;
518 unsigned char *vbioutp = NULL;
519 int i, len = 0, rc = 1;
520 unsigned char *p;
521 int vbi_size;
522
523 if (!dev)
524 return 0;
525
526 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
527 return 0;
528
529 if (urb->status < 0) {
530 print_err_status(dev, -1, urb->status);
531 if (urb->status == -ENOENT)
532 return 0;
533 }
534
535 buf = dev->isoc_ctl.vid_buf;
536 if (buf != NULL)
537 outp = videobuf_to_vmalloc(&buf->vb);
538
539 vbi_buf = dev->isoc_ctl.vbi_buf;
540 if (vbi_buf != NULL)
541 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
542
543 for (i = 0; i < urb->number_of_packets; i++) {
544 int status = urb->iso_frame_desc[i].status;
545
546 if (status < 0) {
547 print_err_status(dev, i, status);
548 if (urb->iso_frame_desc[i].status != -EPROTO)
549 continue;
550 }
551
552 len = urb->iso_frame_desc[i].actual_length;
553 if (urb->iso_frame_desc[i].actual_length <= 0) {
554 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
555 continue;
556 }
557 if (urb->iso_frame_desc[i].actual_length >
558 dev->max_pkt_size) {
559 em28xx_isocdbg("packet bigger than packet size");
560 continue;
561 }
562
563 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
564
565 /* capture type 0 = vbi start
566 capture type 1 = video start
567 capture type 2 = video in progress */
568 if (p[0] == 0x33 && p[1] == 0x95) {
569 dev->capture_type = 0;
570 dev->vbi_read = 0;
571 em28xx_isocdbg("VBI START HEADER!!!\n");
572 dev->cur_field = p[2];
573 p += 4;
574 len -= 4;
575 } else if (p[0] == 0x88 && p[1] == 0x88 &&
576 p[2] == 0x88 && p[3] == 0x88) {
577 /* continuation */
578 p += 4;
579 len -= 4;
580 } else if (p[0] == 0x22 && p[1] == 0x5a) {
581 /* start video */
582 p += 4;
583 len -= 4;
584 }
585
586 vbi_size = dev->vbi_width * dev->vbi_height;
587
588 if (dev->capture_type == 0) {
589 if (dev->vbi_read >= vbi_size) {
590 /* We've already read all the VBI data, so
591 treat the rest as video */
592 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
593 } else if ((dev->vbi_read + len) < vbi_size) {
594 /* This entire frame is VBI data */
595 if (dev->vbi_read == 0 &&
596 (!(dev->cur_field & 1))) {
597 /* Brand new frame */
598 if (vbi_buf != NULL)
599 vbi_buffer_filled(dev,
600 vbi_dma_q,
601 vbi_buf);
602 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
603 if (vbi_buf == NULL)
604 vbioutp = NULL;
605 else
606 vbioutp = videobuf_to_vmalloc(
607 &vbi_buf->vb);
608 }
609
610 if (dev->vbi_read == 0) {
611 vbi_dma_q->pos = 0;
612 if (vbi_buf != NULL) {
613 if (dev->cur_field & 1)
614 vbi_buf->top_field = 0;
615 else
616 vbi_buf->top_field = 1;
617 }
618 }
619
620 dev->vbi_read += len;
621 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
622 vbioutp, len);
623 } else {
624 /* Some of this frame is VBI data and some is
625 video data */
626 int vbi_data_len = vbi_size - dev->vbi_read;
627 dev->vbi_read += vbi_data_len;
628 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
629 vbioutp, vbi_data_len);
630 dev->capture_type = 1;
631 p += vbi_data_len;
632 len -= vbi_data_len;
633 }
634 }
635
636 if (dev->capture_type == 1) {
637 dev->capture_type = 2;
638 if (dev->progressive || !(dev->cur_field & 1)) {
639 if (buf != NULL)
640 buffer_filled(dev, dma_q, buf);
641 get_next_buf(dma_q, &buf);
642 if (buf == NULL)
643 outp = NULL;
644 else
645 outp = videobuf_to_vmalloc(&buf->vb);
646 }
647 if (buf != NULL) {
648 if (dev->cur_field & 1)
649 buf->top_field = 0;
650 else
651 buf->top_field = 1;
652 }
653
654 dma_q->pos = 0;
655 }
656
657 if (buf != NULL && dev->capture_type == 2) {
658 if (len >= 4 && p[0] == 0x88 && p[1] == 0x88 &&
659 p[2] == 0x88 && p[3] == 0x88) {
660 p += 4;
661 len -= 4;
662 }
663 if (len >= 4 && p[0] == 0x22 && p[1] == 0x5a) {
664 em28xx_isocdbg("Video frame %d, len=%i, %s\n",
665 p[2], len, (p[2] & 1) ?
666 "odd" : "even");
667 p += 4;
668 len -= 4;
669 }
670
671 if (len > 0)
672 em28xx_copy_video(dev, dma_q, buf, p, outp,
673 len);
674 }
675 }
676 return rc;
677 }
678
679
680 /* ------------------------------------------------------------------
681 Videobuf operations
682 ------------------------------------------------------------------*/
683
684 static int
685 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
686 {
687 struct em28xx_fh *fh = vq->priv_data;
688 struct em28xx *dev = fh->dev;
689 struct v4l2_frequency f;
690
691 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
692 >> 3;
693
694 if (0 == *count)
695 *count = EM28XX_DEF_BUF;
696
697 if (*count < EM28XX_MIN_BUF)
698 *count = EM28XX_MIN_BUF;
699
700 /* Ask tuner to go to analog or radio mode */
701 memset(&f, 0, sizeof(f));
702 f.frequency = dev->ctl_freq;
703 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
704
705 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
706
707 return 0;
708 }
709
710 /* This is called *without* dev->slock held; please keep it that way */
711 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
712 {
713 struct em28xx_fh *fh = vq->priv_data;
714 struct em28xx *dev = fh->dev;
715 unsigned long flags = 0;
716 if (in_interrupt())
717 BUG();
718
719 /* We used to wait for the buffer to finish here, but this didn't work
720 because, as we were keeping the state as VIDEOBUF_QUEUED,
721 videobuf_queue_cancel marked it as finished for us.
722 (Also, it could wedge forever if the hardware was misconfigured.)
723
724 This should be safe; by the time we get here, the buffer isn't
725 queued anymore. If we ever start marking the buffers as
726 VIDEOBUF_ACTIVE, it won't be, though.
727 */
728 spin_lock_irqsave(&dev->slock, flags);
729 if (dev->isoc_ctl.vid_buf == buf)
730 dev->isoc_ctl.vid_buf = NULL;
731 spin_unlock_irqrestore(&dev->slock, flags);
732
733 videobuf_vmalloc_free(&buf->vb);
734 buf->vb.state = VIDEOBUF_NEEDS_INIT;
735 }
736
737 static int
738 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
739 enum v4l2_field field)
740 {
741 struct em28xx_fh *fh = vq->priv_data;
742 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
743 struct em28xx *dev = fh->dev;
744 int rc = 0, urb_init = 0;
745
746 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
747 + 7) >> 3;
748
749 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
750 return -EINVAL;
751
752 buf->vb.width = dev->width;
753 buf->vb.height = dev->height;
754 buf->vb.field = field;
755
756 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
757 rc = videobuf_iolock(vq, &buf->vb, NULL);
758 if (rc < 0)
759 goto fail;
760 }
761
762 if (!dev->isoc_ctl.num_bufs)
763 urb_init = 1;
764
765 if (urb_init) {
766 if (em28xx_vbi_supported(dev) == 1)
767 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
768 EM28XX_NUM_BUFS,
769 dev->max_pkt_size,
770 em28xx_isoc_copy_vbi);
771 else
772 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
773 EM28XX_NUM_BUFS,
774 dev->max_pkt_size,
775 em28xx_isoc_copy);
776 if (rc < 0)
777 goto fail;
778 }
779
780 buf->vb.state = VIDEOBUF_PREPARED;
781 return 0;
782
783 fail:
784 free_buffer(vq, buf);
785 return rc;
786 }
787
788 static void
789 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
790 {
791 struct em28xx_buffer *buf = container_of(vb,
792 struct em28xx_buffer,
793 vb);
794 struct em28xx_fh *fh = vq->priv_data;
795 struct em28xx *dev = fh->dev;
796 struct em28xx_dmaqueue *vidq = &dev->vidq;
797
798 buf->vb.state = VIDEOBUF_QUEUED;
799 list_add_tail(&buf->vb.queue, &vidq->active);
800
801 }
802
803 static void buffer_release(struct videobuf_queue *vq,
804 struct videobuf_buffer *vb)
805 {
806 struct em28xx_buffer *buf = container_of(vb,
807 struct em28xx_buffer,
808 vb);
809 struct em28xx_fh *fh = vq->priv_data;
810 struct em28xx *dev = (struct em28xx *)fh->dev;
811
812 em28xx_isocdbg("em28xx: called buffer_release\n");
813
814 free_buffer(vq, buf);
815 }
816
817 static struct videobuf_queue_ops em28xx_video_qops = {
818 .buf_setup = buffer_setup,
819 .buf_prepare = buffer_prepare,
820 .buf_queue = buffer_queue,
821 .buf_release = buffer_release,
822 };
823
824 /********************* v4l2 interface **************************************/
825
826 static void video_mux(struct em28xx *dev, int index)
827 {
828 dev->ctl_input = index;
829 dev->ctl_ainput = INPUT(index)->amux;
830 dev->ctl_aoutput = INPUT(index)->aout;
831
832 if (!dev->ctl_aoutput)
833 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
834
835 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
836 INPUT(index)->vmux, 0, 0);
837
838 if (dev->board.has_msp34xx) {
839 if (dev->i2s_speed) {
840 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
841 s_i2s_clock_freq, dev->i2s_speed);
842 }
843 /* Note: this is msp3400 specific */
844 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
845 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
846 }
847
848 if (dev->board.adecoder != EM28XX_NOADECODER) {
849 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
850 dev->ctl_ainput, dev->ctl_aoutput, 0);
851 }
852
853 em28xx_audio_analog_set(dev);
854 }
855
856 /* Usage lock check functions */
857 static int res_get(struct em28xx_fh *fh, unsigned int bit)
858 {
859 struct em28xx *dev = fh->dev;
860
861 if (fh->resources & bit)
862 /* have it already allocated */
863 return 1;
864
865 /* is it free? */
866 if (dev->resources & bit) {
867 /* no, someone else uses it */
868 return 0;
869 }
870 /* it's free, grab it */
871 fh->resources |= bit;
872 dev->resources |= bit;
873 em28xx_videodbg("res: get %d\n", bit);
874 return 1;
875 }
876
877 static int res_check(struct em28xx_fh *fh, unsigned int bit)
878 {
879 return fh->resources & bit;
880 }
881
882 static int res_locked(struct em28xx *dev, unsigned int bit)
883 {
884 return dev->resources & bit;
885 }
886
887 static void res_free(struct em28xx_fh *fh, unsigned int bits)
888 {
889 struct em28xx *dev = fh->dev;
890
891 BUG_ON((fh->resources & bits) != bits);
892
893 fh->resources &= ~bits;
894 dev->resources &= ~bits;
895 em28xx_videodbg("res: put %d\n", bits);
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 f->fmt.pix.width = dev->width;
1023 f->fmt.pix.height = dev->height;
1024 f->fmt.pix.pixelformat = dev->format->fourcc;
1025 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1026 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
1027 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1028
1029 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1030 if (dev->progressive)
1031 f->fmt.pix.field = V4L2_FIELD_NONE;
1032 else
1033 f->fmt.pix.field = dev->interlaced ?
1034 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1035 return 0;
1036 }
1037
1038 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1039 {
1040 unsigned int i;
1041
1042 for (i = 0; i < ARRAY_SIZE(format); i++)
1043 if (format[i].fourcc == fourcc)
1044 return &format[i];
1045
1046 return NULL;
1047 }
1048
1049 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1050 struct v4l2_format *f)
1051 {
1052 struct em28xx_fh *fh = priv;
1053 struct em28xx *dev = fh->dev;
1054 unsigned int width = f->fmt.pix.width;
1055 unsigned int height = f->fmt.pix.height;
1056 unsigned int maxw = norm_maxw(dev);
1057 unsigned int maxh = norm_maxh(dev);
1058 unsigned int hscale, vscale;
1059 struct em28xx_fmt *fmt;
1060
1061 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1062 if (!fmt) {
1063 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1064 f->fmt.pix.pixelformat);
1065 return -EINVAL;
1066 }
1067
1068 if (dev->board.is_em2800) {
1069 /* the em2800 can only scale down to 50% */
1070 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1071 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1072 } else {
1073 /* width must even because of the YUYV format
1074 height must be even because of interlacing */
1075 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1076 1, 0);
1077 }
1078
1079 get_scale(dev, width, height, &hscale, &vscale);
1080
1081 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1082 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1083
1084 f->fmt.pix.width = width;
1085 f->fmt.pix.height = height;
1086 f->fmt.pix.pixelformat = fmt->fourcc;
1087 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1088 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1089 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1090 if (dev->progressive)
1091 f->fmt.pix.field = V4L2_FIELD_NONE;
1092 else
1093 f->fmt.pix.field = dev->interlaced ?
1094 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1095
1096 return 0;
1097 }
1098
1099 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1100 unsigned width, unsigned height)
1101 {
1102 struct em28xx_fmt *fmt;
1103
1104 fmt = format_by_fourcc(fourcc);
1105 if (!fmt)
1106 return -EINVAL;
1107
1108 dev->format = fmt;
1109 dev->width = width;
1110 dev->height = height;
1111
1112 /* set new image size */
1113 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1114
1115 em28xx_set_alternate(dev);
1116 em28xx_resolution_set(dev);
1117
1118 return 0;
1119 }
1120
1121 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1122 struct v4l2_format *f)
1123 {
1124 struct em28xx_fh *fh = priv;
1125 struct em28xx *dev = fh->dev;
1126 int rc;
1127
1128 rc = check_dev(dev);
1129 if (rc < 0)
1130 return rc;
1131
1132 vidioc_try_fmt_vid_cap(file, priv, f);
1133
1134 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1135 em28xx_errdev("%s queue busy\n", __func__);
1136 return -EBUSY;
1137 }
1138
1139 return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1140 f->fmt.pix.width, f->fmt.pix.height);
1141 }
1142
1143 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1144 {
1145 struct em28xx_fh *fh = priv;
1146 struct em28xx *dev = fh->dev;
1147 int rc;
1148
1149 rc = check_dev(dev);
1150 if (rc < 0)
1151 return rc;
1152
1153 *norm = dev->norm;
1154
1155 return 0;
1156 }
1157
1158 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1159 {
1160 struct em28xx_fh *fh = priv;
1161 struct em28xx *dev = fh->dev;
1162 struct v4l2_format f;
1163 int rc;
1164
1165 rc = check_dev(dev);
1166 if (rc < 0)
1167 return rc;
1168
1169 dev->norm = *norm;
1170
1171 /* Adjusts width/height, if needed */
1172 f.fmt.pix.width = dev->width;
1173 f.fmt.pix.height = dev->height;
1174 vidioc_try_fmt_vid_cap(file, priv, &f);
1175
1176 /* set new image size */
1177 dev->width = f.fmt.pix.width;
1178 dev->height = f.fmt.pix.height;
1179 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1180
1181 em28xx_resolution_set(dev);
1182 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1183
1184 return 0;
1185 }
1186
1187 static int vidioc_g_parm(struct file *file, void *priv,
1188 struct v4l2_streamparm *p)
1189 {
1190 struct em28xx_fh *fh = priv;
1191 struct em28xx *dev = fh->dev;
1192 int rc = 0;
1193
1194 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1195 return -EINVAL;
1196
1197 if (dev->board.is_webcam)
1198 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1199 video, g_parm, p);
1200 else
1201 v4l2_video_std_frame_period(dev->norm,
1202 &p->parm.capture.timeperframe);
1203
1204 return rc;
1205 }
1206
1207 static int vidioc_s_parm(struct file *file, void *priv,
1208 struct v4l2_streamparm *p)
1209 {
1210 struct em28xx_fh *fh = priv;
1211 struct em28xx *dev = fh->dev;
1212
1213 if (!dev->board.is_webcam)
1214 return -EINVAL;
1215
1216 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1217 return -EINVAL;
1218
1219 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1220 }
1221
1222 static const char *iname[] = {
1223 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1224 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1225 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1226 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1227 [EM28XX_VMUX_SVIDEO] = "S-Video",
1228 [EM28XX_VMUX_TELEVISION] = "Television",
1229 [EM28XX_VMUX_CABLE] = "Cable TV",
1230 [EM28XX_VMUX_DVB] = "DVB",
1231 [EM28XX_VMUX_DEBUG] = "for debug only",
1232 };
1233
1234 static int vidioc_enum_input(struct file *file, void *priv,
1235 struct v4l2_input *i)
1236 {
1237 struct em28xx_fh *fh = priv;
1238 struct em28xx *dev = fh->dev;
1239 unsigned int n;
1240
1241 n = i->index;
1242 if (n >= MAX_EM28XX_INPUT)
1243 return -EINVAL;
1244 if (0 == INPUT(n)->type)
1245 return -EINVAL;
1246
1247 i->index = n;
1248 i->type = V4L2_INPUT_TYPE_CAMERA;
1249
1250 strcpy(i->name, iname[INPUT(n)->type]);
1251
1252 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1253 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1254 i->type = V4L2_INPUT_TYPE_TUNER;
1255
1256 i->std = dev->vdev->tvnorms;
1257
1258 return 0;
1259 }
1260
1261 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1262 {
1263 struct em28xx_fh *fh = priv;
1264 struct em28xx *dev = fh->dev;
1265
1266 *i = dev->ctl_input;
1267
1268 return 0;
1269 }
1270
1271 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1272 {
1273 struct em28xx_fh *fh = priv;
1274 struct em28xx *dev = fh->dev;
1275 int rc;
1276
1277 rc = check_dev(dev);
1278 if (rc < 0)
1279 return rc;
1280
1281 if (i >= MAX_EM28XX_INPUT)
1282 return -EINVAL;
1283 if (0 == INPUT(i)->type)
1284 return -EINVAL;
1285
1286 dev->ctl_input = i;
1287
1288 video_mux(dev, dev->ctl_input);
1289 return 0;
1290 }
1291
1292 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1293 {
1294 struct em28xx_fh *fh = priv;
1295 struct em28xx *dev = fh->dev;
1296
1297 if (!dev->audio_mode.has_audio)
1298 return -EINVAL;
1299
1300 switch (a->index) {
1301 case EM28XX_AMUX_VIDEO:
1302 strcpy(a->name, "Television");
1303 break;
1304 case EM28XX_AMUX_LINE_IN:
1305 strcpy(a->name, "Line In");
1306 break;
1307 case EM28XX_AMUX_VIDEO2:
1308 strcpy(a->name, "Television alt");
1309 break;
1310 case EM28XX_AMUX_PHONE:
1311 strcpy(a->name, "Phone");
1312 break;
1313 case EM28XX_AMUX_MIC:
1314 strcpy(a->name, "Mic");
1315 break;
1316 case EM28XX_AMUX_CD:
1317 strcpy(a->name, "CD");
1318 break;
1319 case EM28XX_AMUX_AUX:
1320 strcpy(a->name, "Aux");
1321 break;
1322 case EM28XX_AMUX_PCM_OUT:
1323 strcpy(a->name, "PCM");
1324 break;
1325 default:
1326 return -EINVAL;
1327 }
1328
1329 a->index = dev->ctl_ainput;
1330 a->capability = V4L2_AUDCAP_STEREO;
1331
1332 return 0;
1333 }
1334
1335 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1336 {
1337 struct em28xx_fh *fh = priv;
1338 struct em28xx *dev = fh->dev;
1339
1340
1341 if (!dev->audio_mode.has_audio)
1342 return -EINVAL;
1343
1344 if (a->index >= MAX_EM28XX_INPUT)
1345 return -EINVAL;
1346 if (0 == INPUT(a->index)->type)
1347 return -EINVAL;
1348
1349 dev->ctl_ainput = INPUT(a->index)->amux;
1350 dev->ctl_aoutput = INPUT(a->index)->aout;
1351
1352 if (!dev->ctl_aoutput)
1353 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1354
1355 return 0;
1356 }
1357
1358 static int vidioc_queryctrl(struct file *file, void *priv,
1359 struct v4l2_queryctrl *qc)
1360 {
1361 struct em28xx_fh *fh = priv;
1362 struct em28xx *dev = fh->dev;
1363 int id = qc->id;
1364 int rc;
1365
1366 rc = check_dev(dev);
1367 if (rc < 0)
1368 return rc;
1369
1370 memset(qc, 0, sizeof(*qc));
1371
1372 qc->id = id;
1373
1374 /* enumerate AC97 controls */
1375 if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1376 rc = ac97_queryctrl(qc);
1377 if (!rc)
1378 return 0;
1379 }
1380
1381 /* enumerate V4L2 device controls */
1382 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1383
1384 if (qc->type)
1385 return 0;
1386 else
1387 return -EINVAL;
1388 }
1389
1390 /*
1391 * FIXME: This is an indirect way to check if a control exists at a
1392 * subdev. Instead of that hack, maybe the better would be to change all
1393 * subdevs to return -ENOIOCTLCMD, if an ioctl is not supported.
1394 */
1395 static int check_subdev_ctrl(struct em28xx *dev, int id)
1396 {
1397 struct v4l2_queryctrl qc;
1398
1399 memset(&qc, 0, sizeof(qc));
1400 qc.id = id;
1401
1402 /* enumerate V4L2 device controls */
1403 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, &qc);
1404
1405 if (qc.type)
1406 return 0;
1407 else
1408 return -EINVAL;
1409 }
1410
1411 static int vidioc_g_ctrl(struct file *file, void *priv,
1412 struct v4l2_control *ctrl)
1413 {
1414 struct em28xx_fh *fh = priv;
1415 struct em28xx *dev = fh->dev;
1416 int rc;
1417
1418 rc = check_dev(dev);
1419 if (rc < 0)
1420 return rc;
1421 rc = 0;
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 if (check_subdev_ctrl(dev, ctrl->id))
1432 return -EINVAL;
1433
1434 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1435 rc = 0;
1436 }
1437
1438 return rc;
1439 }
1440
1441 static int vidioc_s_ctrl(struct file *file, void *priv,
1442 struct v4l2_control *ctrl)
1443 {
1444 struct em28xx_fh *fh = priv;
1445 struct em28xx *dev = fh->dev;
1446 int rc;
1447
1448 rc = check_dev(dev);
1449 if (rc < 0)
1450 return rc;
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 rc = check_subdev_ctrl(dev, ctrl->id);
1461 if (!rc)
1462 v4l2_device_call_all(&dev->v4l2_dev, 0,
1463 core, s_ctrl, ctrl);
1464 /*
1465 * In the case of non-AC97 volume controls, we still need
1466 * to do some setups at em28xx, in order to mute/unmute
1467 * and to adjust audio volume. However, the value ranges
1468 * should be checked by the corresponding V4L subdriver.
1469 */
1470 switch (ctrl->id) {
1471 case V4L2_CID_AUDIO_MUTE:
1472 dev->mute = ctrl->value;
1473 rc = em28xx_audio_analog_set(dev);
1474 break;
1475 case V4L2_CID_AUDIO_VOLUME:
1476 dev->volume = ctrl->value;
1477 rc = em28xx_audio_analog_set(dev);
1478 }
1479 }
1480 return (rc < 0) ? rc : 0;
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 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1501 return 0;
1502 }
1503
1504 static int vidioc_s_tuner(struct file *file, void *priv,
1505 struct v4l2_tuner *t)
1506 {
1507 struct em28xx_fh *fh = priv;
1508 struct em28xx *dev = fh->dev;
1509 int rc;
1510
1511 rc = check_dev(dev);
1512 if (rc < 0)
1513 return rc;
1514
1515 if (0 != t->index)
1516 return -EINVAL;
1517
1518 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1519 return 0;
1520 }
1521
1522 static int vidioc_g_frequency(struct file *file, void *priv,
1523 struct v4l2_frequency *f)
1524 {
1525 struct em28xx_fh *fh = priv;
1526 struct em28xx *dev = fh->dev;
1527
1528 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1529 f->frequency = dev->ctl_freq;
1530 return 0;
1531 }
1532
1533 static int vidioc_s_frequency(struct file *file, void *priv,
1534 struct v4l2_frequency *f)
1535 {
1536 struct em28xx_fh *fh = priv;
1537 struct em28xx *dev = fh->dev;
1538 int rc;
1539
1540 rc = check_dev(dev);
1541 if (rc < 0)
1542 return rc;
1543
1544 if (0 != f->tuner)
1545 return -EINVAL;
1546
1547 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1548 return -EINVAL;
1549 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1550 return -EINVAL;
1551
1552 dev->ctl_freq = f->frequency;
1553 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1554
1555 return 0;
1556 }
1557
1558 #ifdef CONFIG_VIDEO_ADV_DEBUG
1559 static int em28xx_reg_len(int reg)
1560 {
1561 switch (reg) {
1562 case EM28XX_R40_AC97LSB:
1563 case EM28XX_R30_HSCALELOW:
1564 case EM28XX_R32_VSCALELOW:
1565 return 2;
1566 default:
1567 return 1;
1568 }
1569 }
1570
1571 static int vidioc_g_chip_ident(struct file *file, void *priv,
1572 struct v4l2_dbg_chip_ident *chip)
1573 {
1574 struct em28xx_fh *fh = priv;
1575 struct em28xx *dev = fh->dev;
1576
1577 chip->ident = V4L2_IDENT_NONE;
1578 chip->revision = 0;
1579
1580 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1581
1582 return 0;
1583 }
1584
1585
1586 static int vidioc_g_register(struct file *file, void *priv,
1587 struct v4l2_dbg_register *reg)
1588 {
1589 struct em28xx_fh *fh = priv;
1590 struct em28xx *dev = fh->dev;
1591 int ret;
1592
1593 switch (reg->match.type) {
1594 case V4L2_CHIP_MATCH_AC97:
1595 ret = em28xx_read_ac97(dev, reg->reg);
1596 if (ret < 0)
1597 return ret;
1598
1599 reg->val = ret;
1600 reg->size = 1;
1601 return 0;
1602 case V4L2_CHIP_MATCH_I2C_DRIVER:
1603 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1604 return 0;
1605 case V4L2_CHIP_MATCH_I2C_ADDR:
1606 /* TODO: is this correct? */
1607 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1608 return 0;
1609 default:
1610 if (!v4l2_chip_match_host(&reg->match))
1611 return -EINVAL;
1612 }
1613
1614 /* Match host */
1615 reg->size = em28xx_reg_len(reg->reg);
1616 if (reg->size == 1) {
1617 ret = em28xx_read_reg(dev, reg->reg);
1618
1619 if (ret < 0)
1620 return ret;
1621
1622 reg->val = ret;
1623 } else {
1624 __le16 val = 0;
1625 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1626 reg->reg, (char *)&val, 2);
1627 if (ret < 0)
1628 return ret;
1629
1630 reg->val = le16_to_cpu(val);
1631 }
1632
1633 return 0;
1634 }
1635
1636 static int vidioc_s_register(struct file *file, void *priv,
1637 struct v4l2_dbg_register *reg)
1638 {
1639 struct em28xx_fh *fh = priv;
1640 struct em28xx *dev = fh->dev;
1641 __le16 buf;
1642
1643 switch (reg->match.type) {
1644 case V4L2_CHIP_MATCH_AC97:
1645 return em28xx_write_ac97(dev, reg->reg, reg->val);
1646 case V4L2_CHIP_MATCH_I2C_DRIVER:
1647 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1648 return 0;
1649 case V4L2_CHIP_MATCH_I2C_ADDR:
1650 /* TODO: is this correct? */
1651 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1652 return 0;
1653 default:
1654 if (!v4l2_chip_match_host(&reg->match))
1655 return -EINVAL;
1656 }
1657
1658 /* Match host */
1659 buf = cpu_to_le16(reg->val);
1660
1661 return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1662 em28xx_reg_len(reg->reg));
1663 }
1664 #endif
1665
1666
1667 static int vidioc_cropcap(struct file *file, void *priv,
1668 struct v4l2_cropcap *cc)
1669 {
1670 struct em28xx_fh *fh = priv;
1671 struct em28xx *dev = fh->dev;
1672
1673 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1674 return -EINVAL;
1675
1676 cc->bounds.left = 0;
1677 cc->bounds.top = 0;
1678 cc->bounds.width = dev->width;
1679 cc->bounds.height = dev->height;
1680 cc->defrect = cc->bounds;
1681 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1682 cc->pixelaspect.denominator = 59;
1683
1684 return 0;
1685 }
1686
1687 static int vidioc_streamon(struct file *file, void *priv,
1688 enum v4l2_buf_type type)
1689 {
1690 struct em28xx_fh *fh = priv;
1691 struct em28xx *dev = fh->dev;
1692 int rc = -EINVAL;
1693
1694 rc = check_dev(dev);
1695 if (rc < 0)
1696 return rc;
1697
1698 if (unlikely(type != fh->type))
1699 return -EINVAL;
1700
1701 em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1702 fh, type, fh->resources, dev->resources);
1703
1704 if (unlikely(!res_get(fh, get_ressource(fh))))
1705 return -EBUSY;
1706
1707 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1708 rc = videobuf_streamon(&fh->vb_vidq);
1709 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1710 rc = videobuf_streamon(&fh->vb_vbiq);
1711
1712 return rc;
1713 }
1714
1715 static int vidioc_streamoff(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;
1721
1722 rc = check_dev(dev);
1723 if (rc < 0)
1724 return rc;
1725
1726 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1727 fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1728 return -EINVAL;
1729 if (type != fh->type)
1730 return -EINVAL;
1731
1732 em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1733 fh, type, fh->resources, dev->resources);
1734
1735 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1736 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
1737 videobuf_streamoff(&fh->vb_vidq);
1738 res_free(fh, EM28XX_RESOURCE_VIDEO);
1739 }
1740 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1741 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
1742 videobuf_streamoff(&fh->vb_vbiq);
1743 res_free(fh, EM28XX_RESOURCE_VBI);
1744 }
1745 }
1746
1747 return 0;
1748 }
1749
1750 static int vidioc_querycap(struct file *file, void *priv,
1751 struct v4l2_capability *cap)
1752 {
1753 struct em28xx_fh *fh = priv;
1754 struct em28xx *dev = fh->dev;
1755
1756 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1757 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1758 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1759
1760 cap->version = EM28XX_VERSION_CODE;
1761
1762 cap->capabilities =
1763 V4L2_CAP_SLICED_VBI_CAPTURE |
1764 V4L2_CAP_VIDEO_CAPTURE |
1765 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1766
1767 if (dev->vbi_dev)
1768 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1769
1770 if (dev->audio_mode.has_audio)
1771 cap->capabilities |= V4L2_CAP_AUDIO;
1772
1773 if (dev->tuner_type != TUNER_ABSENT)
1774 cap->capabilities |= V4L2_CAP_TUNER;
1775
1776 return 0;
1777 }
1778
1779 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1780 struct v4l2_fmtdesc *f)
1781 {
1782 if (unlikely(f->index >= ARRAY_SIZE(format)))
1783 return -EINVAL;
1784
1785 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1786 f->pixelformat = format[f->index].fourcc;
1787
1788 return 0;
1789 }
1790
1791 /* Sliced VBI ioctls */
1792 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1793 struct v4l2_format *f)
1794 {
1795 struct em28xx_fh *fh = priv;
1796 struct em28xx *dev = fh->dev;
1797 int rc;
1798
1799 rc = check_dev(dev);
1800 if (rc < 0)
1801 return rc;
1802
1803 f->fmt.sliced.service_set = 0;
1804 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1805
1806 if (f->fmt.sliced.service_set == 0)
1807 rc = -EINVAL;
1808
1809 return rc;
1810 }
1811
1812 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1813 struct v4l2_format *f)
1814 {
1815 struct em28xx_fh *fh = priv;
1816 struct em28xx *dev = fh->dev;
1817 int rc;
1818
1819 rc = check_dev(dev);
1820 if (rc < 0)
1821 return rc;
1822
1823 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1824
1825 if (f->fmt.sliced.service_set == 0)
1826 return -EINVAL;
1827
1828 return 0;
1829 }
1830
1831 /* RAW VBI ioctls */
1832
1833 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1834 struct v4l2_format *format)
1835 {
1836 struct em28xx_fh *fh = priv;
1837 struct em28xx *dev = fh->dev;
1838
1839 format->fmt.vbi.samples_per_line = dev->vbi_width;
1840 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1841 format->fmt.vbi.offset = 0;
1842 format->fmt.vbi.flags = 0;
1843 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1844 format->fmt.vbi.count[0] = dev->vbi_height;
1845 format->fmt.vbi.count[1] = dev->vbi_height;
1846
1847 /* Varies by video standard (NTSC, PAL, etc.) */
1848 if (dev->norm & V4L2_STD_525_60) {
1849 /* NTSC */
1850 format->fmt.vbi.start[0] = 10;
1851 format->fmt.vbi.start[1] = 273;
1852 } else if (dev->norm & V4L2_STD_625_50) {
1853 /* PAL */
1854 format->fmt.vbi.start[0] = 6;
1855 format->fmt.vbi.start[1] = 318;
1856 }
1857
1858 return 0;
1859 }
1860
1861 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1862 struct v4l2_format *format)
1863 {
1864 struct em28xx_fh *fh = priv;
1865 struct em28xx *dev = fh->dev;
1866
1867 format->fmt.vbi.samples_per_line = dev->vbi_width;
1868 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1869 format->fmt.vbi.offset = 0;
1870 format->fmt.vbi.flags = 0;
1871 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1872 format->fmt.vbi.count[0] = dev->vbi_height;
1873 format->fmt.vbi.count[1] = dev->vbi_height;
1874
1875 /* Varies by video standard (NTSC, PAL, etc.) */
1876 if (dev->norm & V4L2_STD_525_60) {
1877 /* NTSC */
1878 format->fmt.vbi.start[0] = 10;
1879 format->fmt.vbi.start[1] = 273;
1880 } else if (dev->norm & V4L2_STD_625_50) {
1881 /* PAL */
1882 format->fmt.vbi.start[0] = 6;
1883 format->fmt.vbi.start[1] = 318;
1884 }
1885
1886 return 0;
1887 }
1888
1889 static int vidioc_reqbufs(struct file *file, void *priv,
1890 struct v4l2_requestbuffers *rb)
1891 {
1892 struct em28xx_fh *fh = priv;
1893 struct em28xx *dev = fh->dev;
1894 int rc;
1895
1896 rc = check_dev(dev);
1897 if (rc < 0)
1898 return rc;
1899
1900 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1901 return videobuf_reqbufs(&fh->vb_vidq, rb);
1902 else
1903 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1904 }
1905
1906 static int vidioc_querybuf(struct file *file, void *priv,
1907 struct v4l2_buffer *b)
1908 {
1909 struct em28xx_fh *fh = priv;
1910 struct em28xx *dev = fh->dev;
1911 int rc;
1912
1913 rc = check_dev(dev);
1914 if (rc < 0)
1915 return rc;
1916
1917 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1918 return videobuf_querybuf(&fh->vb_vidq, b);
1919 else {
1920 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1921 the videobuf framework, but we probably shouldn't be
1922 returning a buffer larger than that which was asked for.
1923 At a minimum, it causes a crash in zvbi since it does
1924 a memcpy based on the source buffer length */
1925 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1926 b->length = dev->vbi_width * dev->vbi_height * 2;
1927
1928 return result;
1929 }
1930 }
1931
1932 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1933 {
1934 struct em28xx_fh *fh = priv;
1935 struct em28xx *dev = fh->dev;
1936 int rc;
1937
1938 rc = check_dev(dev);
1939 if (rc < 0)
1940 return rc;
1941
1942 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1943 return videobuf_qbuf(&fh->vb_vidq, b);
1944 else
1945 return videobuf_qbuf(&fh->vb_vbiq, b);
1946 }
1947
1948 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1949 {
1950 struct em28xx_fh *fh = priv;
1951 struct em28xx *dev = fh->dev;
1952 int rc;
1953
1954 rc = check_dev(dev);
1955 if (rc < 0)
1956 return rc;
1957
1958 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1959 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1960 O_NONBLOCK);
1961 else
1962 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1963 O_NONBLOCK);
1964 }
1965
1966 /* ----------------------------------------------------------- */
1967 /* RADIO ESPECIFIC IOCTLS */
1968 /* ----------------------------------------------------------- */
1969
1970 static int radio_querycap(struct file *file, void *priv,
1971 struct v4l2_capability *cap)
1972 {
1973 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1974
1975 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1976 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1977 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1978
1979 cap->version = EM28XX_VERSION_CODE;
1980 cap->capabilities = V4L2_CAP_TUNER;
1981 return 0;
1982 }
1983
1984 static int radio_g_tuner(struct file *file, void *priv,
1985 struct v4l2_tuner *t)
1986 {
1987 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1988
1989 if (unlikely(t->index > 0))
1990 return -EINVAL;
1991
1992 strcpy(t->name, "Radio");
1993 t->type = V4L2_TUNER_RADIO;
1994
1995 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1996
1997 return 0;
1998 }
1999
2000 static int radio_enum_input(struct file *file, void *priv,
2001 struct v4l2_input *i)
2002 {
2003 if (i->index != 0)
2004 return -EINVAL;
2005 strcpy(i->name, "Radio");
2006 i->type = V4L2_INPUT_TYPE_TUNER;
2007
2008 return 0;
2009 }
2010
2011 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2012 {
2013 if (unlikely(a->index))
2014 return -EINVAL;
2015
2016 strcpy(a->name, "Radio");
2017 return 0;
2018 }
2019
2020 static int radio_s_tuner(struct file *file, void *priv,
2021 struct v4l2_tuner *t)
2022 {
2023 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2024
2025 if (0 != t->index)
2026 return -EINVAL;
2027
2028 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2029
2030 return 0;
2031 }
2032
2033 static int radio_s_audio(struct file *file, void *fh,
2034 struct v4l2_audio *a)
2035 {
2036 return 0;
2037 }
2038
2039 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2040 {
2041 return 0;
2042 }
2043
2044 static int radio_queryctrl(struct file *file, void *priv,
2045 struct v4l2_queryctrl *qc)
2046 {
2047 int i;
2048
2049 if (qc->id < V4L2_CID_BASE ||
2050 qc->id >= V4L2_CID_LASTP1)
2051 return -EINVAL;
2052
2053 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2054 if (qc->id && qc->id == ac97_qctrl[i].id) {
2055 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2056 return 0;
2057 }
2058 }
2059
2060 return -EINVAL;
2061 }
2062
2063 /*
2064 * em28xx_v4l2_open()
2065 * inits the device and starts isoc transfer
2066 */
2067 static int em28xx_v4l2_open(struct file *filp)
2068 {
2069 int errCode = 0, radio = 0;
2070 struct video_device *vdev = video_devdata(filp);
2071 struct em28xx *dev = video_drvdata(filp);
2072 enum v4l2_buf_type fh_type = 0;
2073 struct em28xx_fh *fh;
2074 enum v4l2_field field;
2075
2076 switch (vdev->vfl_type) {
2077 case VFL_TYPE_GRABBER:
2078 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2079 break;
2080 case VFL_TYPE_VBI:
2081 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
2082 break;
2083 case VFL_TYPE_RADIO:
2084 radio = 1;
2085 break;
2086 }
2087
2088 em28xx_videodbg("open dev=%s type=%s users=%d\n",
2089 video_device_node_name(vdev), v4l2_type_names[fh_type],
2090 dev->users);
2091
2092
2093 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2094 if (!fh) {
2095 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2096 return -ENOMEM;
2097 }
2098 fh->dev = dev;
2099 fh->radio = radio;
2100 fh->type = fh_type;
2101 filp->private_data = fh;
2102
2103 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2104 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2105 em28xx_set_alternate(dev);
2106 em28xx_resolution_set(dev);
2107
2108 /* Needed, since GPIO might have disabled power of
2109 some i2c device
2110 */
2111 em28xx_wake_i2c(dev);
2112
2113 }
2114 if (fh->radio) {
2115 em28xx_videodbg("video_open: setting radio device\n");
2116 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2117 }
2118
2119 dev->users++;
2120
2121 if (dev->progressive)
2122 field = V4L2_FIELD_NONE;
2123 else
2124 field = V4L2_FIELD_INTERLACED;
2125
2126 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2127 NULL, &dev->slock,
2128 V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2129 sizeof(struct em28xx_buffer), fh, &dev->lock);
2130
2131 videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2132 NULL, &dev->slock,
2133 V4L2_BUF_TYPE_VBI_CAPTURE,
2134 V4L2_FIELD_SEQ_TB,
2135 sizeof(struct em28xx_buffer), fh, &dev->lock);
2136
2137 return errCode;
2138 }
2139
2140 /*
2141 * em28xx_realease_resources()
2142 * unregisters the v4l2,i2c and usb devices
2143 * called when the device gets disconected or at module unload
2144 */
2145 void em28xx_release_analog_resources(struct em28xx *dev)
2146 {
2147
2148 /*FIXME: I2C IR should be disconnected */
2149
2150 if (dev->radio_dev) {
2151 if (video_is_registered(dev->radio_dev))
2152 video_unregister_device(dev->radio_dev);
2153 else
2154 video_device_release(dev->radio_dev);
2155 dev->radio_dev = NULL;
2156 }
2157 if (dev->vbi_dev) {
2158 em28xx_info("V4L2 device %s deregistered\n",
2159 video_device_node_name(dev->vbi_dev));
2160 if (video_is_registered(dev->vbi_dev))
2161 video_unregister_device(dev->vbi_dev);
2162 else
2163 video_device_release(dev->vbi_dev);
2164 dev->vbi_dev = NULL;
2165 }
2166 if (dev->vdev) {
2167 em28xx_info("V4L2 device %s deregistered\n",
2168 video_device_node_name(dev->vdev));
2169 if (video_is_registered(dev->vdev))
2170 video_unregister_device(dev->vdev);
2171 else
2172 video_device_release(dev->vdev);
2173 dev->vdev = NULL;
2174 }
2175 }
2176
2177 /*
2178 * em28xx_v4l2_close()
2179 * stops streaming and deallocates all resources allocated by the v4l2
2180 * calls and ioctls
2181 */
2182 static int em28xx_v4l2_close(struct file *filp)
2183 {
2184 struct em28xx_fh *fh = filp->private_data;
2185 struct em28xx *dev = fh->dev;
2186 int errCode;
2187
2188 em28xx_videodbg("users=%d\n", dev->users);
2189
2190 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2191 videobuf_stop(&fh->vb_vidq);
2192 res_free(fh, EM28XX_RESOURCE_VIDEO);
2193 }
2194
2195 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2196 videobuf_stop(&fh->vb_vbiq);
2197 res_free(fh, EM28XX_RESOURCE_VBI);
2198 }
2199
2200 if (dev->users == 1) {
2201 /* the device is already disconnect,
2202 free the remaining resources */
2203 if (dev->state & DEV_DISCONNECTED) {
2204 em28xx_release_resources(dev);
2205 kfree(dev);
2206 return 0;
2207 }
2208
2209 /* Save some power by putting tuner to sleep */
2210 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2211
2212 /* do this before setting alternate! */
2213 em28xx_uninit_isoc(dev);
2214 em28xx_set_mode(dev, EM28XX_SUSPEND);
2215
2216 /* set alternate 0 */
2217 dev->alt = 0;
2218 em28xx_videodbg("setting alternate 0\n");
2219 errCode = usb_set_interface(dev->udev, 0, 0);
2220 if (errCode < 0) {
2221 em28xx_errdev("cannot change alternate number to "
2222 "0 (error=%i)\n", errCode);
2223 }
2224 }
2225
2226 videobuf_mmap_free(&fh->vb_vidq);
2227 videobuf_mmap_free(&fh->vb_vbiq);
2228 kfree(fh);
2229 dev->users--;
2230 wake_up_interruptible_nr(&dev->open, 1);
2231 return 0;
2232 }
2233
2234 /*
2235 * em28xx_v4l2_read()
2236 * will allocate buffers when called for the first time
2237 */
2238 static ssize_t
2239 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2240 loff_t *pos)
2241 {
2242 struct em28xx_fh *fh = filp->private_data;
2243 struct em28xx *dev = fh->dev;
2244 int rc;
2245
2246 rc = check_dev(dev);
2247 if (rc < 0)
2248 return rc;
2249
2250 /* FIXME: read() is not prepared to allow changing the video
2251 resolution while streaming. Seems a bug at em28xx_set_fmt
2252 */
2253
2254 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2255 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2256 return -EBUSY;
2257
2258 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2259 filp->f_flags & O_NONBLOCK);
2260 }
2261
2262
2263 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2264 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2265 return -EBUSY;
2266
2267 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2268 filp->f_flags & O_NONBLOCK);
2269 }
2270
2271 return 0;
2272 }
2273
2274 /*
2275 * em28xx_v4l2_poll()
2276 * will allocate buffers when called for the first time
2277 */
2278 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2279 {
2280 struct em28xx_fh *fh = filp->private_data;
2281 struct em28xx *dev = fh->dev;
2282 int rc;
2283
2284 rc = check_dev(dev);
2285 if (rc < 0)
2286 return rc;
2287
2288 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2289 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2290 return POLLERR;
2291 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2292 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2293 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2294 return POLLERR;
2295 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2296 } else {
2297 return POLLERR;
2298 }
2299 }
2300
2301 /*
2302 * em28xx_v4l2_mmap()
2303 */
2304 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2305 {
2306 struct em28xx_fh *fh = filp->private_data;
2307 struct em28xx *dev = fh->dev;
2308 int rc;
2309
2310 rc = check_dev(dev);
2311 if (rc < 0)
2312 return rc;
2313
2314 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2315 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2316 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2317 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2318
2319 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2320 (unsigned long)vma->vm_start,
2321 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2322 rc);
2323
2324 return rc;
2325 }
2326
2327 static const struct v4l2_file_operations em28xx_v4l_fops = {
2328 .owner = THIS_MODULE,
2329 .open = em28xx_v4l2_open,
2330 .release = em28xx_v4l2_close,
2331 .read = em28xx_v4l2_read,
2332 .poll = em28xx_v4l2_poll,
2333 .mmap = em28xx_v4l2_mmap,
2334 .unlocked_ioctl = video_ioctl2,
2335 };
2336
2337 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2338 .vidioc_querycap = vidioc_querycap,
2339 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2340 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2341 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2342 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2343 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2344 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
2345 .vidioc_g_audio = vidioc_g_audio,
2346 .vidioc_s_audio = vidioc_s_audio,
2347 .vidioc_cropcap = vidioc_cropcap,
2348
2349 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2350 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2351 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2352
2353 .vidioc_reqbufs = vidioc_reqbufs,
2354 .vidioc_querybuf = vidioc_querybuf,
2355 .vidioc_qbuf = vidioc_qbuf,
2356 .vidioc_dqbuf = vidioc_dqbuf,
2357 .vidioc_g_std = vidioc_g_std,
2358 .vidioc_s_std = vidioc_s_std,
2359 .vidioc_g_parm = vidioc_g_parm,
2360 .vidioc_s_parm = vidioc_s_parm,
2361 .vidioc_enum_input = vidioc_enum_input,
2362 .vidioc_g_input = vidioc_g_input,
2363 .vidioc_s_input = vidioc_s_input,
2364 .vidioc_queryctrl = vidioc_queryctrl,
2365 .vidioc_g_ctrl = vidioc_g_ctrl,
2366 .vidioc_s_ctrl = vidioc_s_ctrl,
2367 .vidioc_streamon = vidioc_streamon,
2368 .vidioc_streamoff = vidioc_streamoff,
2369 .vidioc_g_tuner = vidioc_g_tuner,
2370 .vidioc_s_tuner = vidioc_s_tuner,
2371 .vidioc_g_frequency = vidioc_g_frequency,
2372 .vidioc_s_frequency = vidioc_s_frequency,
2373 #ifdef CONFIG_VIDEO_ADV_DEBUG
2374 .vidioc_g_register = vidioc_g_register,
2375 .vidioc_s_register = vidioc_s_register,
2376 .vidioc_g_chip_ident = vidioc_g_chip_ident,
2377 #endif
2378 };
2379
2380 static const struct video_device em28xx_video_template = {
2381 .fops = &em28xx_v4l_fops,
2382 .release = video_device_release,
2383 .ioctl_ops = &video_ioctl_ops,
2384
2385 .tvnorms = V4L2_STD_ALL,
2386 .current_norm = V4L2_STD_PAL,
2387 };
2388
2389 static const struct v4l2_file_operations radio_fops = {
2390 .owner = THIS_MODULE,
2391 .open = em28xx_v4l2_open,
2392 .release = em28xx_v4l2_close,
2393 .unlocked_ioctl = video_ioctl2,
2394 };
2395
2396 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2397 .vidioc_querycap = radio_querycap,
2398 .vidioc_g_tuner = radio_g_tuner,
2399 .vidioc_enum_input = radio_enum_input,
2400 .vidioc_g_audio = radio_g_audio,
2401 .vidioc_s_tuner = radio_s_tuner,
2402 .vidioc_s_audio = radio_s_audio,
2403 .vidioc_s_input = radio_s_input,
2404 .vidioc_queryctrl = radio_queryctrl,
2405 .vidioc_g_ctrl = vidioc_g_ctrl,
2406 .vidioc_s_ctrl = vidioc_s_ctrl,
2407 .vidioc_g_frequency = vidioc_g_frequency,
2408 .vidioc_s_frequency = vidioc_s_frequency,
2409 #ifdef CONFIG_VIDEO_ADV_DEBUG
2410 .vidioc_g_register = vidioc_g_register,
2411 .vidioc_s_register = vidioc_s_register,
2412 #endif
2413 };
2414
2415 static struct video_device em28xx_radio_template = {
2416 .name = "em28xx-radio",
2417 .fops = &radio_fops,
2418 .ioctl_ops = &radio_ioctl_ops,
2419 };
2420
2421 /******************************** usb interface ******************************/
2422
2423
2424
2425 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2426 const struct video_device *template,
2427 const char *type_name)
2428 {
2429 struct video_device *vfd;
2430
2431 vfd = video_device_alloc();
2432 if (NULL == vfd)
2433 return NULL;
2434
2435 *vfd = *template;
2436 vfd->v4l2_dev = &dev->v4l2_dev;
2437 vfd->release = video_device_release;
2438 vfd->debug = video_debug;
2439 vfd->lock = &dev->lock;
2440
2441 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2442 dev->name, type_name);
2443
2444 video_set_drvdata(vfd, dev);
2445 return vfd;
2446 }
2447
2448 int em28xx_register_analog_devices(struct em28xx *dev)
2449 {
2450 u8 val;
2451 int ret;
2452
2453 printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2454 dev->name,
2455 (EM28XX_VERSION_CODE >> 16) & 0xff,
2456 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2457
2458 /* set default norm */
2459 dev->norm = em28xx_video_template.current_norm;
2460 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
2461 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2462 dev->ctl_input = 0;
2463
2464 /* Analog specific initialization */
2465 dev->format = &format[0];
2466 em28xx_set_video_format(dev, format[0].fourcc,
2467 norm_maxw(dev), norm_maxh(dev));
2468
2469 video_mux(dev, dev->ctl_input);
2470
2471 /* Audio defaults */
2472 dev->mute = 1;
2473 dev->volume = 0x1f;
2474
2475 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2476 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2477 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2478 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2479
2480 em28xx_set_outfmt(dev);
2481 em28xx_colorlevels_set_default(dev);
2482 em28xx_compression_disable(dev);
2483
2484 /* allocate and fill video video_device struct */
2485 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2486 if (!dev->vdev) {
2487 em28xx_errdev("cannot allocate video_device.\n");
2488 return -ENODEV;
2489 }
2490
2491 /* register v4l2 video video_device */
2492 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2493 video_nr[dev->devno]);
2494 if (ret) {
2495 em28xx_errdev("unable to register video device (error=%i).\n",
2496 ret);
2497 return ret;
2498 }
2499
2500 /* Allocate and fill vbi video_device struct */
2501 if (em28xx_vbi_supported(dev) == 1) {
2502 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2503 "vbi");
2504
2505 /* register v4l2 vbi video_device */
2506 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2507 vbi_nr[dev->devno]);
2508 if (ret < 0) {
2509 em28xx_errdev("unable to register vbi device\n");
2510 return ret;
2511 }
2512 }
2513
2514 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2515 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2516 "radio");
2517 if (!dev->radio_dev) {
2518 em28xx_errdev("cannot allocate video_device.\n");
2519 return -ENODEV;
2520 }
2521 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2522 radio_nr[dev->devno]);
2523 if (ret < 0) {
2524 em28xx_errdev("can't register radio device\n");
2525 return ret;
2526 }
2527 em28xx_info("Registered radio device as %s\n",
2528 video_device_node_name(dev->radio_dev));
2529 }
2530
2531 em28xx_info("V4L2 video device registered as %s\n",
2532 video_device_node_name(dev->vdev));
2533
2534 if (dev->vbi_dev)
2535 em28xx_info("V4L2 VBI device registered as %s\n",
2536 video_device_node_name(dev->vbi_dev));
2537
2538 return 0;
2539 }
kernel source for telekom puls (alcatel/mediatek)