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V4L/DVB: em28xx: g_tuner must set type field
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / media / video / em28xx / em28xx-video.c
blob20090e34173a617c8cd6030124948f2110533917
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 /* FIXME: incomplete buffer checks where removed to make
466 logic simpler. Impacts of those changes should be evaluated
467 */
468 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
469 em28xx_isocdbg("VBI HEADER!!!\n");
470 /* FIXME: Should add vbi copy */
471 continue;
472 }
473 if (p[0] == 0x22 && p[1] == 0x5a) {
474 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
475 len, (p[2] & 1) ? "odd" : "even");
476
477 if (dev->progressive || !(p[2] & 1)) {
478 if (buf != NULL)
479 buffer_filled(dev, dma_q, buf);
480 get_next_buf(dma_q, &buf);
481 if (buf == NULL)
482 outp = NULL;
483 else
484 outp = videobuf_to_vmalloc(&buf->vb);
485 }
486
487 if (buf != NULL) {
488 if (p[2] & 1)
489 buf->top_field = 0;
490 else
491 buf->top_field = 1;
492 }
493
494 dma_q->pos = 0;
495 }
496 if (buf != NULL) {
497 if (p[0] != 0x88 && p[0] != 0x22) {
498 em28xx_isocdbg("frame is not complete\n");
499 len += 4;
500 } else {
501 p += 4;
502 }
503 em28xx_copy_video(dev, dma_q, buf, p, outp, len);
504 }
505 }
506 return rc;
507 }
508
509 /* Version of isoc handler that takes into account a mixture of video and
510 VBI data */
511 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
512 {
513 struct em28xx_buffer *buf, *vbi_buf;
514 struct em28xx_dmaqueue *dma_q = &dev->vidq;
515 struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq;
516 unsigned char *outp = NULL;
517 unsigned char *vbioutp = NULL;
518 int i, len = 0, rc = 1;
519 unsigned char *p;
520 int vbi_size;
521
522 if (!dev)
523 return 0;
524
525 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
526 return 0;
527
528 if (urb->status < 0) {
529 print_err_status(dev, -1, urb->status);
530 if (urb->status == -ENOENT)
531 return 0;
532 }
533
534 buf = dev->isoc_ctl.vid_buf;
535 if (buf != NULL)
536 outp = videobuf_to_vmalloc(&buf->vb);
537
538 vbi_buf = dev->isoc_ctl.vbi_buf;
539 if (vbi_buf != NULL)
540 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
541
542 for (i = 0; i < urb->number_of_packets; i++) {
543 int status = urb->iso_frame_desc[i].status;
544
545 if (status < 0) {
546 print_err_status(dev, i, status);
547 if (urb->iso_frame_desc[i].status != -EPROTO)
548 continue;
549 }
550
551 len = urb->iso_frame_desc[i].actual_length;
552 if (urb->iso_frame_desc[i].actual_length <= 0) {
553 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
554 continue;
555 }
556 if (urb->iso_frame_desc[i].actual_length >
557 dev->max_pkt_size) {
558 em28xx_isocdbg("packet bigger than packet size");
559 continue;
560 }
561
562 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
563
564 /* capture type 0 = vbi start
565 capture type 1 = video start
566 capture type 2 = video in progress */
567 if (p[0] == 0x33 && p[1] == 0x95) {
568 dev->capture_type = 0;
569 dev->vbi_read = 0;
570 em28xx_isocdbg("VBI START HEADER!!!\n");
571 dev->cur_field = p[2];
572 p += 4;
573 len -= 4;
574 } else if (p[0] == 0x88 && p[1] == 0x88 &&
575 p[2] == 0x88 && p[3] == 0x88) {
576 /* continuation */
577 p += 4;
578 len -= 4;
579 } else if (p[0] == 0x22 && p[1] == 0x5a) {
580 /* start video */
581 p += 4;
582 len -= 4;
583 }
584
585 vbi_size = dev->vbi_width * dev->vbi_height;
586
587 if (dev->capture_type == 0) {
588 if (dev->vbi_read >= vbi_size) {
589 /* We've already read all the VBI data, so
590 treat the rest as video */
591 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
592 } else if ((dev->vbi_read + len) < vbi_size) {
593 /* This entire frame is VBI data */
594 if (dev->vbi_read == 0 &&
595 (!(dev->cur_field & 1))) {
596 /* Brand new frame */
597 if (vbi_buf != NULL)
598 vbi_buffer_filled(dev,
599 vbi_dma_q,
600 vbi_buf);
601 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
602 if (vbi_buf == NULL)
603 vbioutp = NULL;
604 else
605 vbioutp = videobuf_to_vmalloc(
606 &vbi_buf->vb);
607 }
608
609 if (dev->vbi_read == 0) {
610 vbi_dma_q->pos = 0;
611 if (vbi_buf != NULL) {
612 if (dev->cur_field & 1)
613 vbi_buf->top_field = 0;
614 else
615 vbi_buf->top_field = 1;
616 }
617 }
618
619 dev->vbi_read += len;
620 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
621 vbioutp, len);
622 } else {
623 /* Some of this frame is VBI data and some is
624 video data */
625 int vbi_data_len = vbi_size - dev->vbi_read;
626 dev->vbi_read += vbi_data_len;
627 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
628 vbioutp, vbi_data_len);
629 dev->capture_type = 1;
630 p += vbi_data_len;
631 len -= vbi_data_len;
632 }
633 }
634
635 if (dev->capture_type == 1) {
636 dev->capture_type = 2;
637 if (dev->progressive || !(dev->cur_field & 1)) {
638 if (buf != NULL)
639 buffer_filled(dev, dma_q, buf);
640 get_next_buf(dma_q, &buf);
641 if (buf == NULL)
642 outp = NULL;
643 else
644 outp = videobuf_to_vmalloc(&buf->vb);
645 }
646 if (buf != NULL) {
647 if (dev->cur_field & 1)
648 buf->top_field = 0;
649 else
650 buf->top_field = 1;
651 }
652
653 dma_q->pos = 0;
654 }
655
656 if (buf != NULL && dev->capture_type == 2) {
657 if (len > 4 && p[0] == 0x88 && p[1] == 0x88 &&
658 p[2] == 0x88 && p[3] == 0x88) {
659 p += 4;
660 len -= 4;
661 }
662 if (len > 4 && p[0] == 0x22 && p[1] == 0x5a) {
663 em28xx_isocdbg("Video frame %d, len=%i, %s\n",
664 p[2], len, (p[2] & 1) ?
665 "odd" : "even");
666 p += 4;
667 len -= 4;
668 }
669
670 if (len > 0)
671 em28xx_copy_video(dev, dma_q, buf, p, outp,
672 len);
673 }
674 }
675 return rc;
676 }
677
678
679 /* ------------------------------------------------------------------
680 Videobuf operations
681 ------------------------------------------------------------------*/
682
683 static int
684 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
685 {
686 struct em28xx_fh *fh = vq->priv_data;
687 struct em28xx *dev = fh->dev;
688 struct v4l2_frequency f;
689
690 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
691 >> 3;
692
693 if (0 == *count)
694 *count = EM28XX_DEF_BUF;
695
696 if (*count < EM28XX_MIN_BUF)
697 *count = EM28XX_MIN_BUF;
698
699 /* Ask tuner to go to analog or radio mode */
700 memset(&f, 0, sizeof(f));
701 f.frequency = dev->ctl_freq;
702 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
703
704 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
705
706 return 0;
707 }
708
709 /* This is called *without* dev->slock held; please keep it that way */
710 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
711 {
712 struct em28xx_fh *fh = vq->priv_data;
713 struct em28xx *dev = fh->dev;
714 unsigned long flags = 0;
715 if (in_interrupt())
716 BUG();
717
718 /* We used to wait for the buffer to finish here, but this didn't work
719 because, as we were keeping the state as VIDEOBUF_QUEUED,
720 videobuf_queue_cancel marked it as finished for us.
721 (Also, it could wedge forever if the hardware was misconfigured.)
722
723 This should be safe; by the time we get here, the buffer isn't
724 queued anymore. If we ever start marking the buffers as
725 VIDEOBUF_ACTIVE, it won't be, though.
726 */
727 spin_lock_irqsave(&dev->slock, flags);
728 if (dev->isoc_ctl.vid_buf == buf)
729 dev->isoc_ctl.vid_buf = NULL;
730 spin_unlock_irqrestore(&dev->slock, flags);
731
732 videobuf_vmalloc_free(&buf->vb);
733 buf->vb.state = VIDEOBUF_NEEDS_INIT;
734 }
735
736 static int
737 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
738 enum v4l2_field field)
739 {
740 struct em28xx_fh *fh = vq->priv_data;
741 struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
742 struct em28xx *dev = fh->dev;
743 int rc = 0, urb_init = 0;
744
745 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
746 + 7) >> 3;
747
748 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
749 return -EINVAL;
750
751 buf->vb.width = dev->width;
752 buf->vb.height = dev->height;
753 buf->vb.field = field;
754
755 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
756 rc = videobuf_iolock(vq, &buf->vb, NULL);
757 if (rc < 0)
758 goto fail;
759 }
760
761 if (!dev->isoc_ctl.num_bufs)
762 urb_init = 1;
763
764 if (urb_init) {
765 if (em28xx_vbi_supported(dev) == 1)
766 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
767 EM28XX_NUM_BUFS,
768 dev->max_pkt_size,
769 em28xx_isoc_copy_vbi);
770 else
771 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
772 EM28XX_NUM_BUFS,
773 dev->max_pkt_size,
774 em28xx_isoc_copy);
775 if (rc < 0)
776 goto fail;
777 }
778
779 buf->vb.state = VIDEOBUF_PREPARED;
780 return 0;
781
782 fail:
783 free_buffer(vq, buf);
784 return rc;
785 }
786
787 static void
788 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
789 {
790 struct em28xx_buffer *buf = container_of(vb,
791 struct em28xx_buffer,
792 vb);
793 struct em28xx_fh *fh = vq->priv_data;
794 struct em28xx *dev = fh->dev;
795 struct em28xx_dmaqueue *vidq = &dev->vidq;
796
797 buf->vb.state = VIDEOBUF_QUEUED;
798 list_add_tail(&buf->vb.queue, &vidq->active);
799
800 }
801
802 static void buffer_release(struct videobuf_queue *vq,
803 struct videobuf_buffer *vb)
804 {
805 struct em28xx_buffer *buf = container_of(vb,
806 struct em28xx_buffer,
807 vb);
808 struct em28xx_fh *fh = vq->priv_data;
809 struct em28xx *dev = (struct em28xx *)fh->dev;
810
811 em28xx_isocdbg("em28xx: called buffer_release\n");
812
813 free_buffer(vq, buf);
814 }
815
816 static struct videobuf_queue_ops em28xx_video_qops = {
817 .buf_setup = buffer_setup,
818 .buf_prepare = buffer_prepare,
819 .buf_queue = buffer_queue,
820 .buf_release = buffer_release,
821 };
822
823 /********************* v4l2 interface **************************************/
824
825 static void video_mux(struct em28xx *dev, int index)
826 {
827 dev->ctl_input = index;
828 dev->ctl_ainput = INPUT(index)->amux;
829 dev->ctl_aoutput = INPUT(index)->aout;
830
831 if (!dev->ctl_aoutput)
832 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
833
834 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
835 INPUT(index)->vmux, 0, 0);
836
837 if (dev->board.has_msp34xx) {
838 if (dev->i2s_speed) {
839 v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
840 s_i2s_clock_freq, dev->i2s_speed);
841 }
842 /* Note: this is msp3400 specific */
843 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
844 dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
845 }
846
847 if (dev->board.adecoder != EM28XX_NOADECODER) {
848 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
849 dev->ctl_ainput, dev->ctl_aoutput, 0);
850 }
851
852 em28xx_audio_analog_set(dev);
853 }
854
855 /* Usage lock check functions */
856 static int res_get(struct em28xx_fh *fh, unsigned int bit)
857 {
858 struct em28xx *dev = fh->dev;
859
860 if (fh->resources & bit)
861 /* have it already allocated */
862 return 1;
863
864 /* is it free? */
865 mutex_lock(&dev->lock);
866 if (dev->resources & bit) {
867 /* no, someone else uses it */
868 mutex_unlock(&dev->lock);
869 return 0;
870 }
871 /* it's free, grab it */
872 fh->resources |= bit;
873 dev->resources |= bit;
874 em28xx_videodbg("res: get %d\n", bit);
875 mutex_unlock(&dev->lock);
876 return 1;
877 }
878
879 static int res_check(struct em28xx_fh *fh, unsigned int bit)
880 {
881 return fh->resources & bit;
882 }
883
884 static int res_locked(struct em28xx *dev, unsigned int bit)
885 {
886 return dev->resources & bit;
887 }
888
889 static void res_free(struct em28xx_fh *fh, unsigned int bits)
890 {
891 struct em28xx *dev = fh->dev;
892
893 BUG_ON((fh->resources & bits) != bits);
894
895 mutex_lock(&dev->lock);
896 fh->resources &= ~bits;
897 dev->resources &= ~bits;
898 em28xx_videodbg("res: put %d\n", bits);
899 mutex_unlock(&dev->lock);
900 }
901
902 static int get_ressource(struct em28xx_fh *fh)
903 {
904 switch (fh->type) {
905 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
906 return EM28XX_RESOURCE_VIDEO;
907 case V4L2_BUF_TYPE_VBI_CAPTURE:
908 return EM28XX_RESOURCE_VBI;
909 default:
910 BUG();
911 return 0;
912 }
913 }
914
915 /*
916 * ac97_queryctrl()
917 * return the ac97 supported controls
918 */
919 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
920 {
921 int i;
922
923 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
924 if (qc->id && qc->id == ac97_qctrl[i].id) {
925 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
926 return 0;
927 }
928 }
929
930 /* Control is not ac97 related */
931 return 1;
932 }
933
934 /*
935 * ac97_get_ctrl()
936 * return the current values for ac97 mute and volume
937 */
938 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
939 {
940 switch (ctrl->id) {
941 case V4L2_CID_AUDIO_MUTE:
942 ctrl->value = dev->mute;
943 return 0;
944 case V4L2_CID_AUDIO_VOLUME:
945 ctrl->value = dev->volume;
946 return 0;
947 default:
948 /* Control is not ac97 related */
949 return 1;
950 }
951 }
952
953 /*
954 * ac97_set_ctrl()
955 * set values for ac97 mute and volume
956 */
957 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
958 {
959 int i;
960
961 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
962 if (ctrl->id == ac97_qctrl[i].id)
963 goto handle;
964
965 /* Announce that hasn't handle it */
966 return 1;
967
968 handle:
969 if (ctrl->value < ac97_qctrl[i].minimum ||
970 ctrl->value > ac97_qctrl[i].maximum)
971 return -ERANGE;
972
973 switch (ctrl->id) {
974 case V4L2_CID_AUDIO_MUTE:
975 dev->mute = ctrl->value;
976 break;
977 case V4L2_CID_AUDIO_VOLUME:
978 dev->volume = ctrl->value;
979 break;
980 }
981
982 return em28xx_audio_analog_set(dev);
983 }
984
985 static int check_dev(struct em28xx *dev)
986 {
987 if (dev->state & DEV_DISCONNECTED) {
988 em28xx_errdev("v4l2 ioctl: device not present\n");
989 return -ENODEV;
990 }
991
992 if (dev->state & DEV_MISCONFIGURED) {
993 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
994 "close and open it again\n");
995 return -EIO;
996 }
997 return 0;
998 }
999
1000 static void get_scale(struct em28xx *dev,
1001 unsigned int width, unsigned int height,
1002 unsigned int *hscale, unsigned int *vscale)
1003 {
1004 unsigned int maxw = norm_maxw(dev);
1005 unsigned int maxh = norm_maxh(dev);
1006
1007 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
1008 if (*hscale >= 0x4000)
1009 *hscale = 0x3fff;
1010
1011 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
1012 if (*vscale >= 0x4000)
1013 *vscale = 0x3fff;
1014 }
1015
1016 /* ------------------------------------------------------------------
1017 IOCTL vidioc handling
1018 ------------------------------------------------------------------*/
1019
1020 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1021 struct v4l2_format *f)
1022 {
1023 struct em28xx_fh *fh = priv;
1024 struct em28xx *dev = fh->dev;
1025
1026 mutex_lock(&dev->lock);
1027
1028 f->fmt.pix.width = dev->width;
1029 f->fmt.pix.height = dev->height;
1030 f->fmt.pix.pixelformat = dev->format->fourcc;
1031 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1032 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
1033 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1034
1035 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1036 if (dev->progressive)
1037 f->fmt.pix.field = V4L2_FIELD_NONE;
1038 else
1039 f->fmt.pix.field = dev->interlaced ?
1040 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1041
1042 mutex_unlock(&dev->lock);
1043 return 0;
1044 }
1045
1046 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1047 {
1048 unsigned int i;
1049
1050 for (i = 0; i < ARRAY_SIZE(format); i++)
1051 if (format[i].fourcc == fourcc)
1052 return &format[i];
1053
1054 return NULL;
1055 }
1056
1057 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1058 struct v4l2_format *f)
1059 {
1060 struct em28xx_fh *fh = priv;
1061 struct em28xx *dev = fh->dev;
1062 unsigned int width = f->fmt.pix.width;
1063 unsigned int height = f->fmt.pix.height;
1064 unsigned int maxw = norm_maxw(dev);
1065 unsigned int maxh = norm_maxh(dev);
1066 unsigned int hscale, vscale;
1067 struct em28xx_fmt *fmt;
1068
1069 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1070 if (!fmt) {
1071 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1072 f->fmt.pix.pixelformat);
1073 return -EINVAL;
1074 }
1075
1076 if (dev->board.is_em2800) {
1077 /* the em2800 can only scale down to 50% */
1078 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1079 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1080 } else {
1081 /* width must even because of the YUYV format
1082 height must be even because of interlacing */
1083 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1084 1, 0);
1085 }
1086
1087 get_scale(dev, width, height, &hscale, &vscale);
1088
1089 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1090 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1091
1092 f->fmt.pix.width = width;
1093 f->fmt.pix.height = height;
1094 f->fmt.pix.pixelformat = fmt->fourcc;
1095 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1096 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1097 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1098 if (dev->progressive)
1099 f->fmt.pix.field = V4L2_FIELD_NONE;
1100 else
1101 f->fmt.pix.field = dev->interlaced ?
1102 V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1103
1104 return 0;
1105 }
1106
1107 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1108 unsigned width, unsigned height)
1109 {
1110 struct em28xx_fmt *fmt;
1111
1112 fmt = format_by_fourcc(fourcc);
1113 if (!fmt)
1114 return -EINVAL;
1115
1116 dev->format = fmt;
1117 dev->width = width;
1118 dev->height = height;
1119
1120 /* set new image size */
1121 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1122
1123 em28xx_set_alternate(dev);
1124 em28xx_resolution_set(dev);
1125
1126 return 0;
1127 }
1128
1129 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1130 struct v4l2_format *f)
1131 {
1132 struct em28xx_fh *fh = priv;
1133 struct em28xx *dev = fh->dev;
1134 int rc;
1135
1136 rc = check_dev(dev);
1137 if (rc < 0)
1138 return rc;
1139
1140 mutex_lock(&dev->lock);
1141
1142 vidioc_try_fmt_vid_cap(file, priv, f);
1143
1144 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1145 em28xx_errdev("%s queue busy\n", __func__);
1146 rc = -EBUSY;
1147 goto out;
1148 }
1149
1150 rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1151 f->fmt.pix.width, f->fmt.pix.height);
1152
1153 out:
1154 mutex_unlock(&dev->lock);
1155 return rc;
1156 }
1157
1158 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1159 {
1160 struct em28xx_fh *fh = priv;
1161 struct em28xx *dev = fh->dev;
1162 int rc;
1163
1164 rc = check_dev(dev);
1165 if (rc < 0)
1166 return rc;
1167
1168 *norm = dev->norm;
1169
1170 return 0;
1171 }
1172
1173 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1174 {
1175 struct em28xx_fh *fh = priv;
1176 struct em28xx *dev = fh->dev;
1177 struct v4l2_format f;
1178 int rc;
1179
1180 rc = check_dev(dev);
1181 if (rc < 0)
1182 return rc;
1183
1184 mutex_lock(&dev->lock);
1185 dev->norm = *norm;
1186
1187 /* Adjusts width/height, if needed */
1188 f.fmt.pix.width = dev->width;
1189 f.fmt.pix.height = dev->height;
1190 vidioc_try_fmt_vid_cap(file, priv, &f);
1191
1192 /* set new image size */
1193 dev->width = f.fmt.pix.width;
1194 dev->height = f.fmt.pix.height;
1195 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1196
1197 em28xx_resolution_set(dev);
1198 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1199
1200 mutex_unlock(&dev->lock);
1201 return 0;
1202 }
1203
1204 static int vidioc_g_parm(struct file *file, void *priv,
1205 struct v4l2_streamparm *p)
1206 {
1207 struct em28xx_fh *fh = priv;
1208 struct em28xx *dev = fh->dev;
1209 int rc = 0;
1210
1211 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1212 return -EINVAL;
1213
1214 if (dev->board.is_webcam)
1215 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1216 video, g_parm, p);
1217 else
1218 v4l2_video_std_frame_period(dev->norm,
1219 &p->parm.capture.timeperframe);
1220
1221 return rc;
1222 }
1223
1224 static int vidioc_s_parm(struct file *file, void *priv,
1225 struct v4l2_streamparm *p)
1226 {
1227 struct em28xx_fh *fh = priv;
1228 struct em28xx *dev = fh->dev;
1229
1230 if (!dev->board.is_webcam)
1231 return -EINVAL;
1232
1233 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1234 return -EINVAL;
1235
1236 return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1237 }
1238
1239 static const char *iname[] = {
1240 [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1241 [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1242 [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1243 [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1244 [EM28XX_VMUX_SVIDEO] = "S-Video",
1245 [EM28XX_VMUX_TELEVISION] = "Television",
1246 [EM28XX_VMUX_CABLE] = "Cable TV",
1247 [EM28XX_VMUX_DVB] = "DVB",
1248 [EM28XX_VMUX_DEBUG] = "for debug only",
1249 };
1250
1251 static int vidioc_enum_input(struct file *file, void *priv,
1252 struct v4l2_input *i)
1253 {
1254 struct em28xx_fh *fh = priv;
1255 struct em28xx *dev = fh->dev;
1256 unsigned int n;
1257
1258 n = i->index;
1259 if (n >= MAX_EM28XX_INPUT)
1260 return -EINVAL;
1261 if (0 == INPUT(n)->type)
1262 return -EINVAL;
1263
1264 i->index = n;
1265 i->type = V4L2_INPUT_TYPE_CAMERA;
1266
1267 strcpy(i->name, iname[INPUT(n)->type]);
1268
1269 if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1270 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1271 i->type = V4L2_INPUT_TYPE_TUNER;
1272
1273 i->std = dev->vdev->tvnorms;
1274
1275 return 0;
1276 }
1277
1278 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1279 {
1280 struct em28xx_fh *fh = priv;
1281 struct em28xx *dev = fh->dev;
1282
1283 *i = dev->ctl_input;
1284
1285 return 0;
1286 }
1287
1288 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1289 {
1290 struct em28xx_fh *fh = priv;
1291 struct em28xx *dev = fh->dev;
1292 int rc;
1293
1294 rc = check_dev(dev);
1295 if (rc < 0)
1296 return rc;
1297
1298 if (i >= MAX_EM28XX_INPUT)
1299 return -EINVAL;
1300 if (0 == INPUT(i)->type)
1301 return -EINVAL;
1302
1303 dev->ctl_input = i;
1304
1305 mutex_lock(&dev->lock);
1306 video_mux(dev, dev->ctl_input);
1307 mutex_unlock(&dev->lock);
1308 return 0;
1309 }
1310
1311 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1312 {
1313 struct em28xx_fh *fh = priv;
1314 struct em28xx *dev = fh->dev;
1315
1316 if (!dev->audio_mode.has_audio)
1317 return -EINVAL;
1318
1319 switch (a->index) {
1320 case EM28XX_AMUX_VIDEO:
1321 strcpy(a->name, "Television");
1322 break;
1323 case EM28XX_AMUX_LINE_IN:
1324 strcpy(a->name, "Line In");
1325 break;
1326 case EM28XX_AMUX_VIDEO2:
1327 strcpy(a->name, "Television alt");
1328 break;
1329 case EM28XX_AMUX_PHONE:
1330 strcpy(a->name, "Phone");
1331 break;
1332 case EM28XX_AMUX_MIC:
1333 strcpy(a->name, "Mic");
1334 break;
1335 case EM28XX_AMUX_CD:
1336 strcpy(a->name, "CD");
1337 break;
1338 case EM28XX_AMUX_AUX:
1339 strcpy(a->name, "Aux");
1340 break;
1341 case EM28XX_AMUX_PCM_OUT:
1342 strcpy(a->name, "PCM");
1343 break;
1344 default:
1345 return -EINVAL;
1346 }
1347
1348 a->index = dev->ctl_ainput;
1349 a->capability = V4L2_AUDCAP_STEREO;
1350
1351 return 0;
1352 }
1353
1354 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1355 {
1356 struct em28xx_fh *fh = priv;
1357 struct em28xx *dev = fh->dev;
1358
1359
1360 if (!dev->audio_mode.has_audio)
1361 return -EINVAL;
1362
1363 if (a->index >= MAX_EM28XX_INPUT)
1364 return -EINVAL;
1365 if (0 == INPUT(a->index)->type)
1366 return -EINVAL;
1367
1368 mutex_lock(&dev->lock);
1369
1370 dev->ctl_ainput = INPUT(a->index)->amux;
1371 dev->ctl_aoutput = INPUT(a->index)->aout;
1372
1373 if (!dev->ctl_aoutput)
1374 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1375
1376 mutex_unlock(&dev->lock);
1377 return 0;
1378 }
1379
1380 static int vidioc_queryctrl(struct file *file, void *priv,
1381 struct v4l2_queryctrl *qc)
1382 {
1383 struct em28xx_fh *fh = priv;
1384 struct em28xx *dev = fh->dev;
1385 int id = qc->id;
1386 int rc;
1387
1388 rc = check_dev(dev);
1389 if (rc < 0)
1390 return rc;
1391
1392 memset(qc, 0, sizeof(*qc));
1393
1394 qc->id = id;
1395
1396 /* enumberate AC97 controls */
1397 if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1398 rc = ac97_queryctrl(qc);
1399 if (!rc)
1400 return 0;
1401 }
1402
1403 /* enumberate V4L2 device controls */
1404 mutex_lock(&dev->lock);
1405 v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1406 mutex_unlock(&dev->lock);
1407
1408 if (qc->type)
1409 return 0;
1410 else
1411 return -EINVAL;
1412 }
1413
1414 static int vidioc_g_ctrl(struct file *file, void *priv,
1415 struct v4l2_control *ctrl)
1416 {
1417 struct em28xx_fh *fh = priv;
1418 struct em28xx *dev = fh->dev;
1419 int rc;
1420
1421 rc = check_dev(dev);
1422 if (rc < 0)
1423 return rc;
1424 rc = 0;
1425
1426 mutex_lock(&dev->lock);
1427
1428 /* Set an AC97 control */
1429 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1430 rc = ac97_get_ctrl(dev, ctrl);
1431 else
1432 rc = 1;
1433
1434 /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1435 if (rc == 1) {
1436 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1437 rc = 0;
1438 }
1439
1440 mutex_unlock(&dev->lock);
1441 return rc;
1442 }
1443
1444 static int vidioc_s_ctrl(struct file *file, void *priv,
1445 struct v4l2_control *ctrl)
1446 {
1447 struct em28xx_fh *fh = priv;
1448 struct em28xx *dev = fh->dev;
1449 int rc;
1450
1451 rc = check_dev(dev);
1452 if (rc < 0)
1453 return rc;
1454
1455 mutex_lock(&dev->lock);
1456
1457 /* Set an AC97 control */
1458 if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1459 rc = ac97_set_ctrl(dev, ctrl);
1460 else
1461 rc = 1;
1462
1463 /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1464 if (rc == 1) {
1465 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1466
1467 /*
1468 * In the case of non-AC97 volume controls, we still need
1469 * to do some setups at em28xx, in order to mute/unmute
1470 * and to adjust audio volume. However, the value ranges
1471 * should be checked by the corresponding V4L subdriver.
1472 */
1473 switch (ctrl->id) {
1474 case V4L2_CID_AUDIO_MUTE:
1475 dev->mute = ctrl->value;
1476 rc = em28xx_audio_analog_set(dev);
1477 break;
1478 case V4L2_CID_AUDIO_VOLUME:
1479 dev->volume = ctrl->value;
1480 rc = em28xx_audio_analog_set(dev);
1481 }
1482 }
1483
1484 mutex_unlock(&dev->lock);
1485 return rc;
1486 }
1487
1488 static int vidioc_g_tuner(struct file *file, void *priv,
1489 struct v4l2_tuner *t)
1490 {
1491 struct em28xx_fh *fh = priv;
1492 struct em28xx *dev = fh->dev;
1493 int rc;
1494
1495 rc = check_dev(dev);
1496 if (rc < 0)
1497 return rc;
1498
1499 if (0 != t->index)
1500 return -EINVAL;
1501
1502 strcpy(t->name, "Tuner");
1503 t->type = V4L2_TUNER_ANALOG_TV;
1504
1505 mutex_lock(&dev->lock);
1506 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1507 mutex_unlock(&dev->lock);
1508
1509 return 0;
1510 }
1511
1512 static int vidioc_s_tuner(struct file *file, void *priv,
1513 struct v4l2_tuner *t)
1514 {
1515 struct em28xx_fh *fh = priv;
1516 struct em28xx *dev = fh->dev;
1517 int rc;
1518
1519 rc = check_dev(dev);
1520 if (rc < 0)
1521 return rc;
1522
1523 if (0 != t->index)
1524 return -EINVAL;
1525
1526 mutex_lock(&dev->lock);
1527 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1528 mutex_unlock(&dev->lock);
1529
1530 return 0;
1531 }
1532
1533 static int vidioc_g_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
1539 mutex_lock(&dev->lock);
1540 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1541 f->frequency = dev->ctl_freq;
1542 mutex_unlock(&dev->lock);
1543
1544 return 0;
1545 }
1546
1547 static int vidioc_s_frequency(struct file *file, void *priv,
1548 struct v4l2_frequency *f)
1549 {
1550 struct em28xx_fh *fh = priv;
1551 struct em28xx *dev = fh->dev;
1552 int rc;
1553
1554 rc = check_dev(dev);
1555 if (rc < 0)
1556 return rc;
1557
1558 if (0 != f->tuner)
1559 return -EINVAL;
1560
1561 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1562 return -EINVAL;
1563 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1564 return -EINVAL;
1565
1566 mutex_lock(&dev->lock);
1567
1568 dev->ctl_freq = f->frequency;
1569 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1570
1571 mutex_unlock(&dev->lock);
1572
1573 return 0;
1574 }
1575
1576 #ifdef CONFIG_VIDEO_ADV_DEBUG
1577 static int em28xx_reg_len(int reg)
1578 {
1579 switch (reg) {
1580 case EM28XX_R40_AC97LSB:
1581 case EM28XX_R30_HSCALELOW:
1582 case EM28XX_R32_VSCALELOW:
1583 return 2;
1584 default:
1585 return 1;
1586 }
1587 }
1588
1589 static int vidioc_g_chip_ident(struct file *file, void *priv,
1590 struct v4l2_dbg_chip_ident *chip)
1591 {
1592 struct em28xx_fh *fh = priv;
1593 struct em28xx *dev = fh->dev;
1594
1595 chip->ident = V4L2_IDENT_NONE;
1596 chip->revision = 0;
1597
1598 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1599
1600 return 0;
1601 }
1602
1603
1604 static int vidioc_g_register(struct file *file, void *priv,
1605 struct v4l2_dbg_register *reg)
1606 {
1607 struct em28xx_fh *fh = priv;
1608 struct em28xx *dev = fh->dev;
1609 int ret;
1610
1611 switch (reg->match.type) {
1612 case V4L2_CHIP_MATCH_AC97:
1613 mutex_lock(&dev->lock);
1614 ret = em28xx_read_ac97(dev, reg->reg);
1615 mutex_unlock(&dev->lock);
1616 if (ret < 0)
1617 return ret;
1618
1619 reg->val = ret;
1620 reg->size = 1;
1621 return 0;
1622 case V4L2_CHIP_MATCH_I2C_DRIVER:
1623 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1624 return 0;
1625 case V4L2_CHIP_MATCH_I2C_ADDR:
1626 /* TODO: is this correct? */
1627 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1628 return 0;
1629 default:
1630 if (!v4l2_chip_match_host(&reg->match))
1631 return -EINVAL;
1632 }
1633
1634 /* Match host */
1635 reg->size = em28xx_reg_len(reg->reg);
1636 if (reg->size == 1) {
1637 mutex_lock(&dev->lock);
1638 ret = em28xx_read_reg(dev, reg->reg);
1639 mutex_unlock(&dev->lock);
1640
1641 if (ret < 0)
1642 return ret;
1643
1644 reg->val = ret;
1645 } else {
1646 __le16 val = 0;
1647 mutex_lock(&dev->lock);
1648 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1649 reg->reg, (char *)&val, 2);
1650 mutex_unlock(&dev->lock);
1651 if (ret < 0)
1652 return ret;
1653
1654 reg->val = le16_to_cpu(val);
1655 }
1656
1657 return 0;
1658 }
1659
1660 static int vidioc_s_register(struct file *file, void *priv,
1661 struct v4l2_dbg_register *reg)
1662 {
1663 struct em28xx_fh *fh = priv;
1664 struct em28xx *dev = fh->dev;
1665 __le16 buf;
1666 int rc;
1667
1668 switch (reg->match.type) {
1669 case V4L2_CHIP_MATCH_AC97:
1670 mutex_lock(&dev->lock);
1671 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1672 mutex_unlock(&dev->lock);
1673
1674 return rc;
1675 case V4L2_CHIP_MATCH_I2C_DRIVER:
1676 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1677 return 0;
1678 case V4L2_CHIP_MATCH_I2C_ADDR:
1679 /* TODO: is this correct? */
1680 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1681 return 0;
1682 default:
1683 if (!v4l2_chip_match_host(&reg->match))
1684 return -EINVAL;
1685 }
1686
1687 /* Match host */
1688 buf = cpu_to_le16(reg->val);
1689
1690 mutex_lock(&dev->lock);
1691 rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1692 em28xx_reg_len(reg->reg));
1693 mutex_unlock(&dev->lock);
1694
1695 return rc;
1696 }
1697 #endif
1698
1699
1700 static int vidioc_cropcap(struct file *file, void *priv,
1701 struct v4l2_cropcap *cc)
1702 {
1703 struct em28xx_fh *fh = priv;
1704 struct em28xx *dev = fh->dev;
1705
1706 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1707 return -EINVAL;
1708
1709 cc->bounds.left = 0;
1710 cc->bounds.top = 0;
1711 cc->bounds.width = dev->width;
1712 cc->bounds.height = dev->height;
1713 cc->defrect = cc->bounds;
1714 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1715 cc->pixelaspect.denominator = 59;
1716
1717 return 0;
1718 }
1719
1720 static int vidioc_streamon(struct file *file, void *priv,
1721 enum v4l2_buf_type type)
1722 {
1723 struct em28xx_fh *fh = priv;
1724 struct em28xx *dev = fh->dev;
1725 int rc = -EINVAL;
1726
1727 rc = check_dev(dev);
1728 if (rc < 0)
1729 return rc;
1730
1731 if (unlikely(type != fh->type))
1732 return -EINVAL;
1733
1734 em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1735 fh, type, fh->resources, dev->resources);
1736
1737 if (unlikely(!res_get(fh, get_ressource(fh))))
1738 return -EBUSY;
1739
1740 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1741 rc = videobuf_streamon(&fh->vb_vidq);
1742 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1743 rc = videobuf_streamon(&fh->vb_vbiq);
1744
1745 return rc;
1746 }
1747
1748 static int vidioc_streamoff(struct file *file, void *priv,
1749 enum v4l2_buf_type type)
1750 {
1751 struct em28xx_fh *fh = priv;
1752 struct em28xx *dev = fh->dev;
1753 int rc;
1754
1755 rc = check_dev(dev);
1756 if (rc < 0)
1757 return rc;
1758
1759 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1760 fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1761 return -EINVAL;
1762 if (type != fh->type)
1763 return -EINVAL;
1764
1765 em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1766 fh, type, fh->resources, dev->resources);
1767
1768 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1769 videobuf_streamoff(&fh->vb_vidq);
1770 res_free(fh, EM28XX_RESOURCE_VIDEO);
1771 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1772 videobuf_streamoff(&fh->vb_vbiq);
1773 res_free(fh, EM28XX_RESOURCE_VBI);
1774 }
1775
1776 return 0;
1777 }
1778
1779 static int vidioc_querycap(struct file *file, void *priv,
1780 struct v4l2_capability *cap)
1781 {
1782 struct em28xx_fh *fh = priv;
1783 struct em28xx *dev = fh->dev;
1784
1785 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1786 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1787 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1788
1789 cap->version = EM28XX_VERSION_CODE;
1790
1791 cap->capabilities =
1792 V4L2_CAP_SLICED_VBI_CAPTURE |
1793 V4L2_CAP_VIDEO_CAPTURE |
1794 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1795
1796 if (dev->vbi_dev)
1797 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1798
1799 if (dev->audio_mode.has_audio)
1800 cap->capabilities |= V4L2_CAP_AUDIO;
1801
1802 if (dev->tuner_type != TUNER_ABSENT)
1803 cap->capabilities |= V4L2_CAP_TUNER;
1804
1805 return 0;
1806 }
1807
1808 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1809 struct v4l2_fmtdesc *f)
1810 {
1811 if (unlikely(f->index >= ARRAY_SIZE(format)))
1812 return -EINVAL;
1813
1814 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1815 f->pixelformat = format[f->index].fourcc;
1816
1817 return 0;
1818 }
1819
1820 /* Sliced VBI ioctls */
1821 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1822 struct v4l2_format *f)
1823 {
1824 struct em28xx_fh *fh = priv;
1825 struct em28xx *dev = fh->dev;
1826 int rc;
1827
1828 rc = check_dev(dev);
1829 if (rc < 0)
1830 return rc;
1831
1832 mutex_lock(&dev->lock);
1833
1834 f->fmt.sliced.service_set = 0;
1835 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1836
1837 if (f->fmt.sliced.service_set == 0)
1838 rc = -EINVAL;
1839
1840 mutex_unlock(&dev->lock);
1841
1842 return rc;
1843 }
1844
1845 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1846 struct v4l2_format *f)
1847 {
1848 struct em28xx_fh *fh = priv;
1849 struct em28xx *dev = fh->dev;
1850 int rc;
1851
1852 rc = check_dev(dev);
1853 if (rc < 0)
1854 return rc;
1855
1856 mutex_lock(&dev->lock);
1857 v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced);
1858 mutex_unlock(&dev->lock);
1859
1860 if (f->fmt.sliced.service_set == 0)
1861 return -EINVAL;
1862
1863 return 0;
1864 }
1865
1866 /* RAW VBI ioctls */
1867
1868 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1869 struct v4l2_format *format)
1870 {
1871 struct em28xx_fh *fh = priv;
1872 struct em28xx *dev = fh->dev;
1873
1874 format->fmt.vbi.samples_per_line = dev->vbi_width;
1875 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1876 format->fmt.vbi.offset = 0;
1877 format->fmt.vbi.flags = 0;
1878 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1879 format->fmt.vbi.count[0] = dev->vbi_height;
1880 format->fmt.vbi.count[1] = dev->vbi_height;
1881
1882 /* Varies by video standard (NTSC, PAL, etc.) */
1883 if (dev->norm & V4L2_STD_525_60) {
1884 /* NTSC */
1885 format->fmt.vbi.start[0] = 10;
1886 format->fmt.vbi.start[1] = 273;
1887 } else if (dev->norm & V4L2_STD_625_50) {
1888 /* PAL */
1889 format->fmt.vbi.start[0] = 6;
1890 format->fmt.vbi.start[1] = 318;
1891 }
1892
1893 return 0;
1894 }
1895
1896 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1897 struct v4l2_format *format)
1898 {
1899 struct em28xx_fh *fh = priv;
1900 struct em28xx *dev = fh->dev;
1901
1902 format->fmt.vbi.samples_per_line = dev->vbi_width;
1903 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1904 format->fmt.vbi.offset = 0;
1905 format->fmt.vbi.flags = 0;
1906 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1907 format->fmt.vbi.count[0] = dev->vbi_height;
1908 format->fmt.vbi.count[1] = dev->vbi_height;
1909
1910 /* Varies by video standard (NTSC, PAL, etc.) */
1911 if (dev->norm & V4L2_STD_525_60) {
1912 /* NTSC */
1913 format->fmt.vbi.start[0] = 10;
1914 format->fmt.vbi.start[1] = 273;
1915 } else if (dev->norm & V4L2_STD_625_50) {
1916 /* PAL */
1917 format->fmt.vbi.start[0] = 6;
1918 format->fmt.vbi.start[1] = 318;
1919 }
1920
1921 return 0;
1922 }
1923
1924 static int vidioc_reqbufs(struct file *file, void *priv,
1925 struct v4l2_requestbuffers *rb)
1926 {
1927 struct em28xx_fh *fh = priv;
1928 struct em28xx *dev = fh->dev;
1929 int rc;
1930
1931 rc = check_dev(dev);
1932 if (rc < 0)
1933 return rc;
1934
1935 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1936 return videobuf_reqbufs(&fh->vb_vidq, rb);
1937 else
1938 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1939 }
1940
1941 static int vidioc_querybuf(struct file *file, void *priv,
1942 struct v4l2_buffer *b)
1943 {
1944 struct em28xx_fh *fh = priv;
1945 struct em28xx *dev = fh->dev;
1946 int rc;
1947
1948 rc = check_dev(dev);
1949 if (rc < 0)
1950 return rc;
1951
1952 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1953 return videobuf_querybuf(&fh->vb_vidq, b);
1954 else {
1955 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1956 the videobuf framework, but we probably shouldn't be
1957 returning a buffer larger than that which was asked for.
1958 At a minimum, it causes a crash in zvbi since it does
1959 a memcpy based on the source buffer length */
1960 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1961 b->length = dev->vbi_width * dev->vbi_height * 2;
1962
1963 return result;
1964 }
1965 }
1966
1967 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1968 {
1969 struct em28xx_fh *fh = priv;
1970 struct em28xx *dev = fh->dev;
1971 int rc;
1972
1973 rc = check_dev(dev);
1974 if (rc < 0)
1975 return rc;
1976
1977 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1978 return videobuf_qbuf(&fh->vb_vidq, b);
1979 else
1980 return videobuf_qbuf(&fh->vb_vbiq, b);
1981 }
1982
1983 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1984 {
1985 struct em28xx_fh *fh = priv;
1986 struct em28xx *dev = fh->dev;
1987 int rc;
1988
1989 rc = check_dev(dev);
1990 if (rc < 0)
1991 return rc;
1992
1993 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1994 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1995 O_NONBLOCK);
1996 else
1997 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1998 O_NONBLOCK);
1999 }
2000
2001 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2002 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
2003 {
2004 struct em28xx_fh *fh = priv;
2005
2006 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2007 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
2008 else
2009 return videobuf_cgmbuf(&fh->vb_vbiq, mbuf, 8);
2010 }
2011 #endif
2012
2013
2014 /* ----------------------------------------------------------- */
2015 /* RADIO ESPECIFIC IOCTLS */
2016 /* ----------------------------------------------------------- */
2017
2018 static int radio_querycap(struct file *file, void *priv,
2019 struct v4l2_capability *cap)
2020 {
2021 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2022
2023 strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
2024 strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
2025 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
2026
2027 cap->version = EM28XX_VERSION_CODE;
2028 cap->capabilities = V4L2_CAP_TUNER;
2029 return 0;
2030 }
2031
2032 static int radio_g_tuner(struct file *file, void *priv,
2033 struct v4l2_tuner *t)
2034 {
2035 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2036
2037 if (unlikely(t->index > 0))
2038 return -EINVAL;
2039
2040 strcpy(t->name, "Radio");
2041 t->type = V4L2_TUNER_RADIO;
2042
2043 mutex_lock(&dev->lock);
2044 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
2045 mutex_unlock(&dev->lock);
2046
2047 return 0;
2048 }
2049
2050 static int radio_enum_input(struct file *file, void *priv,
2051 struct v4l2_input *i)
2052 {
2053 if (i->index != 0)
2054 return -EINVAL;
2055 strcpy(i->name, "Radio");
2056 i->type = V4L2_INPUT_TYPE_TUNER;
2057
2058 return 0;
2059 }
2060
2061 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2062 {
2063 if (unlikely(a->index))
2064 return -EINVAL;
2065
2066 strcpy(a->name, "Radio");
2067 return 0;
2068 }
2069
2070 static int radio_s_tuner(struct file *file, void *priv,
2071 struct v4l2_tuner *t)
2072 {
2073 struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2074
2075 if (0 != t->index)
2076 return -EINVAL;
2077
2078 mutex_lock(&dev->lock);
2079 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2080 mutex_unlock(&dev->lock);
2081
2082 return 0;
2083 }
2084
2085 static int radio_s_audio(struct file *file, void *fh,
2086 struct v4l2_audio *a)
2087 {
2088 return 0;
2089 }
2090
2091 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2092 {
2093 return 0;
2094 }
2095
2096 static int radio_queryctrl(struct file *file, void *priv,
2097 struct v4l2_queryctrl *qc)
2098 {
2099 int i;
2100
2101 if (qc->id < V4L2_CID_BASE ||
2102 qc->id >= V4L2_CID_LASTP1)
2103 return -EINVAL;
2104
2105 for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2106 if (qc->id && qc->id == ac97_qctrl[i].id) {
2107 memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2108 return 0;
2109 }
2110 }
2111
2112 return -EINVAL;
2113 }
2114
2115 /*
2116 * em28xx_v4l2_open()
2117 * inits the device and starts isoc transfer
2118 */
2119 static int em28xx_v4l2_open(struct file *filp)
2120 {
2121 int errCode = 0, radio = 0;
2122 struct video_device *vdev = video_devdata(filp);
2123 struct em28xx *dev = video_drvdata(filp);
2124 enum v4l2_buf_type fh_type = 0;
2125 struct em28xx_fh *fh;
2126 enum v4l2_field field;
2127
2128 switch (vdev->vfl_type) {
2129 case VFL_TYPE_GRABBER:
2130 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2131 break;
2132 case VFL_TYPE_VBI:
2133 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
2134 break;
2135 case VFL_TYPE_RADIO:
2136 radio = 1;
2137 break;
2138 }
2139
2140 mutex_lock(&dev->lock);
2141
2142 em28xx_videodbg("open dev=%s type=%s users=%d\n",
2143 video_device_node_name(vdev), v4l2_type_names[fh_type],
2144 dev->users);
2145
2146
2147 fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2148 if (!fh) {
2149 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2150 mutex_unlock(&dev->lock);
2151 return -ENOMEM;
2152 }
2153 fh->dev = dev;
2154 fh->radio = radio;
2155 fh->type = fh_type;
2156 filp->private_data = fh;
2157
2158 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2159 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2160 em28xx_set_alternate(dev);
2161 em28xx_resolution_set(dev);
2162
2163 /* Needed, since GPIO might have disabled power of
2164 some i2c device
2165 */
2166 em28xx_wake_i2c(dev);
2167
2168 }
2169 if (fh->radio) {
2170 em28xx_videodbg("video_open: setting radio device\n");
2171 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2172 }
2173
2174 dev->users++;
2175
2176 if (dev->progressive)
2177 field = V4L2_FIELD_NONE;
2178 else
2179 field = V4L2_FIELD_INTERLACED;
2180
2181 videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2182 NULL, &dev->slock,
2183 V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2184 sizeof(struct em28xx_buffer), fh);
2185
2186 videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2187 NULL, &dev->slock,
2188 V4L2_BUF_TYPE_VBI_CAPTURE,
2189 V4L2_FIELD_SEQ_TB,
2190 sizeof(struct em28xx_buffer), fh);
2191
2192 mutex_unlock(&dev->lock);
2193
2194 return errCode;
2195 }
2196
2197 /*
2198 * em28xx_realease_resources()
2199 * unregisters the v4l2,i2c and usb devices
2200 * called when the device gets disconected or at module unload
2201 */
2202 void em28xx_release_analog_resources(struct em28xx *dev)
2203 {
2204
2205 /*FIXME: I2C IR should be disconnected */
2206
2207 if (dev->radio_dev) {
2208 if (video_is_registered(dev->radio_dev))
2209 video_unregister_device(dev->radio_dev);
2210 else
2211 video_device_release(dev->radio_dev);
2212 dev->radio_dev = NULL;
2213 }
2214 if (dev->vbi_dev) {
2215 em28xx_info("V4L2 device %s deregistered\n",
2216 video_device_node_name(dev->vbi_dev));
2217 if (video_is_registered(dev->vbi_dev))
2218 video_unregister_device(dev->vbi_dev);
2219 else
2220 video_device_release(dev->vbi_dev);
2221 dev->vbi_dev = NULL;
2222 }
2223 if (dev->vdev) {
2224 em28xx_info("V4L2 device %s deregistered\n",
2225 video_device_node_name(dev->vdev));
2226 if (video_is_registered(dev->vdev))
2227 video_unregister_device(dev->vdev);
2228 else
2229 video_device_release(dev->vdev);
2230 dev->vdev = NULL;
2231 }
2232 }
2233
2234 /*
2235 * em28xx_v4l2_close()
2236 * stops streaming and deallocates all resources allocated by the v4l2
2237 * calls and ioctls
2238 */
2239 static int em28xx_v4l2_close(struct file *filp)
2240 {
2241 struct em28xx_fh *fh = filp->private_data;
2242 struct em28xx *dev = fh->dev;
2243 int errCode;
2244
2245 em28xx_videodbg("users=%d\n", dev->users);
2246
2247 if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2248 videobuf_stop(&fh->vb_vidq);
2249 res_free(fh, EM28XX_RESOURCE_VIDEO);
2250 }
2251
2252 if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2253 videobuf_stop(&fh->vb_vbiq);
2254 res_free(fh, EM28XX_RESOURCE_VBI);
2255 }
2256
2257 if (dev->users == 1) {
2258 /* the device is already disconnect,
2259 free the remaining resources */
2260 if (dev->state & DEV_DISCONNECTED) {
2261 em28xx_release_resources(dev);
2262 kfree(dev);
2263 return 0;
2264 }
2265
2266 /* Save some power by putting tuner to sleep */
2267 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2268
2269 /* do this before setting alternate! */
2270 em28xx_uninit_isoc(dev);
2271 em28xx_set_mode(dev, EM28XX_SUSPEND);
2272
2273 /* set alternate 0 */
2274 dev->alt = 0;
2275 em28xx_videodbg("setting alternate 0\n");
2276 errCode = usb_set_interface(dev->udev, 0, 0);
2277 if (errCode < 0) {
2278 em28xx_errdev("cannot change alternate number to "
2279 "0 (error=%i)\n", errCode);
2280 }
2281 }
2282
2283 videobuf_mmap_free(&fh->vb_vidq);
2284 videobuf_mmap_free(&fh->vb_vbiq);
2285 kfree(fh);
2286 dev->users--;
2287 wake_up_interruptible_nr(&dev->open, 1);
2288 return 0;
2289 }
2290
2291 /*
2292 * em28xx_v4l2_read()
2293 * will allocate buffers when called for the first time
2294 */
2295 static ssize_t
2296 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2297 loff_t *pos)
2298 {
2299 struct em28xx_fh *fh = filp->private_data;
2300 struct em28xx *dev = fh->dev;
2301 int rc;
2302
2303 rc = check_dev(dev);
2304 if (rc < 0)
2305 return rc;
2306
2307 /* FIXME: read() is not prepared to allow changing the video
2308 resolution while streaming. Seems a bug at em28xx_set_fmt
2309 */
2310
2311 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2312 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2313 return -EBUSY;
2314
2315 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2316 filp->f_flags & O_NONBLOCK);
2317 }
2318
2319
2320 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2321 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2322 return -EBUSY;
2323
2324 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2325 filp->f_flags & O_NONBLOCK);
2326 }
2327
2328 return 0;
2329 }
2330
2331 /*
2332 * em28xx_v4l2_poll()
2333 * will allocate buffers when called for the first time
2334 */
2335 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2336 {
2337 struct em28xx_fh *fh = filp->private_data;
2338 struct em28xx *dev = fh->dev;
2339 int rc;
2340
2341 rc = check_dev(dev);
2342 if (rc < 0)
2343 return rc;
2344
2345 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2346 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2347 return POLLERR;
2348 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2349 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2350 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2351 return POLLERR;
2352 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2353 } else {
2354 return POLLERR;
2355 }
2356 }
2357
2358 /*
2359 * em28xx_v4l2_mmap()
2360 */
2361 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2362 {
2363 struct em28xx_fh *fh = filp->private_data;
2364 struct em28xx *dev = fh->dev;
2365 int rc;
2366
2367 rc = check_dev(dev);
2368 if (rc < 0)
2369 return rc;
2370
2371 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2372 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2373 else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2374 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2375
2376 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2377 (unsigned long)vma->vm_start,
2378 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2379 rc);
2380
2381 return rc;
2382 }
2383
2384 static const struct v4l2_file_operations em28xx_v4l_fops = {
2385 .owner = THIS_MODULE,
2386 .open = em28xx_v4l2_open,
2387 .release = em28xx_v4l2_close,
2388 .read = em28xx_v4l2_read,
2389 .poll = em28xx_v4l2_poll,
2390 .mmap = em28xx_v4l2_mmap,
2391 .ioctl = video_ioctl2,
2392 };
2393
2394 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2395 .vidioc_querycap = vidioc_querycap,
2396 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2397 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2398 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2399 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2400 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2401 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
2402 .vidioc_g_audio = vidioc_g_audio,
2403 .vidioc_s_audio = vidioc_s_audio,
2404 .vidioc_cropcap = vidioc_cropcap,
2405
2406 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2407 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2408 .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2409
2410 .vidioc_reqbufs = vidioc_reqbufs,
2411 .vidioc_querybuf = vidioc_querybuf,
2412 .vidioc_qbuf = vidioc_qbuf,
2413 .vidioc_dqbuf = vidioc_dqbuf,
2414 .vidioc_g_std = vidioc_g_std,
2415 .vidioc_s_std = vidioc_s_std,
2416 .vidioc_g_parm = vidioc_g_parm,
2417 .vidioc_s_parm = vidioc_s_parm,
2418 .vidioc_enum_input = vidioc_enum_input,
2419 .vidioc_g_input = vidioc_g_input,
2420 .vidioc_s_input = vidioc_s_input,
2421 .vidioc_queryctrl = vidioc_queryctrl,
2422 .vidioc_g_ctrl = vidioc_g_ctrl,
2423 .vidioc_s_ctrl = vidioc_s_ctrl,
2424 .vidioc_streamon = vidioc_streamon,
2425 .vidioc_streamoff = vidioc_streamoff,
2426 .vidioc_g_tuner = vidioc_g_tuner,
2427 .vidioc_s_tuner = vidioc_s_tuner,
2428 .vidioc_g_frequency = vidioc_g_frequency,
2429 .vidioc_s_frequency = vidioc_s_frequency,
2430 #ifdef CONFIG_VIDEO_ADV_DEBUG
2431 .vidioc_g_register = vidioc_g_register,
2432 .vidioc_s_register = vidioc_s_register,
2433 .vidioc_g_chip_ident = vidioc_g_chip_ident,
2434 #endif
2435 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2436 .vidiocgmbuf = vidiocgmbuf,
2437 #endif
2438 };
2439
2440 static const struct video_device em28xx_video_template = {
2441 .fops = &em28xx_v4l_fops,
2442 .release = video_device_release,
2443 .ioctl_ops = &video_ioctl_ops,
2444
2445 .tvnorms = V4L2_STD_ALL,
2446 .current_norm = V4L2_STD_PAL,
2447 };
2448
2449 static const struct v4l2_file_operations radio_fops = {
2450 .owner = THIS_MODULE,
2451 .open = em28xx_v4l2_open,
2452 .release = em28xx_v4l2_close,
2453 .ioctl = video_ioctl2,
2454 };
2455
2456 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2457 .vidioc_querycap = radio_querycap,
2458 .vidioc_g_tuner = radio_g_tuner,
2459 .vidioc_enum_input = radio_enum_input,
2460 .vidioc_g_audio = radio_g_audio,
2461 .vidioc_s_tuner = radio_s_tuner,
2462 .vidioc_s_audio = radio_s_audio,
2463 .vidioc_s_input = radio_s_input,
2464 .vidioc_queryctrl = radio_queryctrl,
2465 .vidioc_g_ctrl = vidioc_g_ctrl,
2466 .vidioc_s_ctrl = vidioc_s_ctrl,
2467 .vidioc_g_frequency = vidioc_g_frequency,
2468 .vidioc_s_frequency = vidioc_s_frequency,
2469 #ifdef CONFIG_VIDEO_ADV_DEBUG
2470 .vidioc_g_register = vidioc_g_register,
2471 .vidioc_s_register = vidioc_s_register,
2472 #endif
2473 };
2474
2475 static struct video_device em28xx_radio_template = {
2476 .name = "em28xx-radio",
2477 .fops = &radio_fops,
2478 .ioctl_ops = &radio_ioctl_ops,
2479 };
2480
2481 /******************************** usb interface ******************************/
2482
2483
2484
2485 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2486 const struct video_device *template,
2487 const char *type_name)
2488 {
2489 struct video_device *vfd;
2490
2491 vfd = video_device_alloc();
2492 if (NULL == vfd)
2493 return NULL;
2494
2495 *vfd = *template;
2496 vfd->v4l2_dev = &dev->v4l2_dev;
2497 vfd->release = video_device_release;
2498 vfd->debug = video_debug;
2499
2500 snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2501 dev->name, type_name);
2502
2503 video_set_drvdata(vfd, dev);
2504 return vfd;
2505 }
2506
2507 int em28xx_register_analog_devices(struct em28xx *dev)
2508 {
2509 u8 val;
2510 int ret;
2511
2512 printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2513 dev->name,
2514 (EM28XX_VERSION_CODE >> 16) & 0xff,
2515 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2516
2517 /* set default norm */
2518 dev->norm = em28xx_video_template.current_norm;
2519 dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2520 dev->ctl_input = 0;
2521
2522 /* Analog specific initialization */
2523 dev->format = &format[0];
2524 em28xx_set_video_format(dev, format[0].fourcc,
2525 norm_maxw(dev), norm_maxh(dev));
2526
2527 video_mux(dev, dev->ctl_input);
2528
2529 /* Audio defaults */
2530 dev->mute = 1;
2531 dev->volume = 0x1f;
2532
2533 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2534 val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2535 em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2536 (EM28XX_XCLK_AUDIO_UNMUTE | val));
2537
2538 em28xx_set_outfmt(dev);
2539 em28xx_colorlevels_set_default(dev);
2540 em28xx_compression_disable(dev);
2541
2542 /* allocate and fill video video_device struct */
2543 dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2544 if (!dev->vdev) {
2545 em28xx_errdev("cannot allocate video_device.\n");
2546 return -ENODEV;
2547 }
2548
2549 /* register v4l2 video video_device */
2550 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2551 video_nr[dev->devno]);
2552 if (ret) {
2553 em28xx_errdev("unable to register video device (error=%i).\n",
2554 ret);
2555 return ret;
2556 }
2557
2558 /* Allocate and fill vbi video_device struct */
2559 if (em28xx_vbi_supported(dev) == 1) {
2560 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2561 "vbi");
2562
2563 /* register v4l2 vbi video_device */
2564 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2565 vbi_nr[dev->devno]);
2566 if (ret < 0) {
2567 em28xx_errdev("unable to register vbi device\n");
2568 return ret;
2569 }
2570 }
2571
2572 if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2573 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2574 "radio");
2575 if (!dev->radio_dev) {
2576 em28xx_errdev("cannot allocate video_device.\n");
2577 return -ENODEV;
2578 }
2579 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2580 radio_nr[dev->devno]);
2581 if (ret < 0) {
2582 em28xx_errdev("can't register radio device\n");
2583 return ret;
2584 }
2585 em28xx_info("Registered radio device as %s\n",
2586 video_device_node_name(dev->radio_dev));
2587 }
2588
2589 em28xx_info("V4L2 video device registered as %s\n",
2590 video_device_node_name(dev->vdev));
2591
2592 if (dev->vbi_dev)
2593 em28xx_info("V4L2 VBI device registered as %s\n",
2594 video_device_node_name(dev->vbi_dev));
2595
2596 return 0;
2597 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree