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V4L/DVB (11370): v4l2-subdev: move s_std from tuner to core.
[deliverable/linux.git] / drivers / media / video / cx231xx / cx231xx-video.c
1 /*
2 cx231xx-video.c - driver for Conexant Cx23100/101/102
3 USB video capture devices
4
5 Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
6 Based on em28xx driver
7 Based on cx23885 driver
8 Based on cx88 driver
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/init.h>
26 #include <linux/list.h>
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/bitmap.h>
30 #include <linux/usb.h>
31 #include <linux/i2c.h>
32 #include <linux/version.h>
33 #include <linux/mm.h>
34 #include <linux/mutex.h>
35
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <media/msp3400.h>
40 #include <media/tuner.h>
41
42 #include "dvb_frontend.h"
43
44 #include "cx231xx.h"
45 #include "cx231xx-vbi.h"
46
47 #define CX231XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
48
49 #define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
50 #define DRIVER_DESC "Conexant cx231xx based USB video device driver"
51
52 #define cx231xx_videodbg(fmt, arg...) do {\
53 if (video_debug) \
54 printk(KERN_INFO "%s %s :"fmt, \
55 dev->name, __func__ , ##arg); } while (0)
56
57 static unsigned int isoc_debug;
58 module_param(isoc_debug, int, 0644);
59 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
60
61 #define cx231xx_isocdbg(fmt, arg...) \
62 do {\
63 if (isoc_debug) { \
64 printk(KERN_INFO "%s %s :"fmt, \
65 dev->name, __func__ , ##arg); \
66 } \
67 } while (0)
68
69 MODULE_AUTHOR(DRIVER_AUTHOR);
70 MODULE_DESCRIPTION(DRIVER_DESC);
71 MODULE_LICENSE("GPL");
72
73 static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
75 static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
77
78 module_param_array(card, int, NULL, 0444);
79 module_param_array(video_nr, int, NULL, 0444);
80 module_param_array(vbi_nr, int, NULL, 0444);
81 module_param_array(radio_nr, int, NULL, 0444);
82
83 MODULE_PARM_DESC(card, "card type");
84 MODULE_PARM_DESC(video_nr, "video device numbers");
85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
87
88 static unsigned int video_debug;
89 module_param(video_debug, int, 0644);
90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
91
92 /* supported video standards */
93 static struct cx231xx_fmt format[] = {
94 {
95 .name = "16bpp YUY2, 4:2:2, packed",
96 .fourcc = V4L2_PIX_FMT_YUYV,
97 .depth = 16,
98 .reg = 0,
99 },
100 };
101
102 /* supported controls */
103 /* Common to all boards */
104
105 /* ------------------------------------------------------------------- */
106
107 static const struct v4l2_queryctrl no_ctl = {
108 .name = "42",
109 .flags = V4L2_CTRL_FLAG_DISABLED,
110 };
111
112 static struct cx231xx_ctrl cx231xx_ctls[] = {
113 /* --- video --- */
114 {
115 .v = {
116 .id = V4L2_CID_BRIGHTNESS,
117 .name = "Brightness",
118 .minimum = 0x00,
119 .maximum = 0xff,
120 .step = 1,
121 .default_value = 0x7f,
122 .type = V4L2_CTRL_TYPE_INTEGER,
123 },
124 .off = 128,
125 .reg = LUMA_CTRL,
126 .mask = 0x00ff,
127 .shift = 0,
128 }, {
129 .v = {
130 .id = V4L2_CID_CONTRAST,
131 .name = "Contrast",
132 .minimum = 0,
133 .maximum = 0xff,
134 .step = 1,
135 .default_value = 0x3f,
136 .type = V4L2_CTRL_TYPE_INTEGER,
137 },
138 .off = 0,
139 .reg = LUMA_CTRL,
140 .mask = 0xff00,
141 .shift = 8,
142 }, {
143 .v = {
144 .id = V4L2_CID_HUE,
145 .name = "Hue",
146 .minimum = 0,
147 .maximum = 0xff,
148 .step = 1,
149 .default_value = 0x7f,
150 .type = V4L2_CTRL_TYPE_INTEGER,
151 },
152 .off = 128,
153 .reg = CHROMA_CTRL,
154 .mask = 0xff0000,
155 .shift = 16,
156 }, {
157 /* strictly, this only describes only U saturation.
158 * V saturation is handled specially through code.
159 */
160 .v = {
161 .id = V4L2_CID_SATURATION,
162 .name = "Saturation",
163 .minimum = 0,
164 .maximum = 0xff,
165 .step = 1,
166 .default_value = 0x7f,
167 .type = V4L2_CTRL_TYPE_INTEGER,
168 },
169 .off = 0,
170 .reg = CHROMA_CTRL,
171 .mask = 0x00ff,
172 .shift = 0,
173 }, {
174 /* --- audio --- */
175 .v = {
176 .id = V4L2_CID_AUDIO_MUTE,
177 .name = "Mute",
178 .minimum = 0,
179 .maximum = 1,
180 .default_value = 1,
181 .type = V4L2_CTRL_TYPE_BOOLEAN,
182 },
183 .reg = PATH1_CTL1,
184 .mask = (0x1f << 24),
185 .shift = 24,
186 }, {
187 .v = {
188 .id = V4L2_CID_AUDIO_VOLUME,
189 .name = "Volume",
190 .minimum = 0,
191 .maximum = 0x3f,
192 .step = 1,
193 .default_value = 0x3f,
194 .type = V4L2_CTRL_TYPE_INTEGER,
195 },
196 .reg = PATH1_VOL_CTL,
197 .mask = 0xff,
198 .shift = 0,
199 }
200 };
201 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
202
203 static const u32 cx231xx_user_ctrls[] = {
204 V4L2_CID_USER_CLASS,
205 V4L2_CID_BRIGHTNESS,
206 V4L2_CID_CONTRAST,
207 V4L2_CID_SATURATION,
208 V4L2_CID_HUE,
209 V4L2_CID_AUDIO_VOLUME,
210 #if 0
211 V4L2_CID_AUDIO_BALANCE,
212 #endif
213 V4L2_CID_AUDIO_MUTE,
214 0
215 };
216
217 static const u32 *ctrl_classes[] = {
218 cx231xx_user_ctrls,
219 NULL
220 };
221
222 /* ------------------------------------------------------------------
223 Video buffer and parser functions
224 ------------------------------------------------------------------*/
225
226 /*
227 * Announces that a buffer were filled and request the next
228 */
229 static inline void buffer_filled(struct cx231xx *dev,
230 struct cx231xx_dmaqueue *dma_q,
231 struct cx231xx_buffer *buf)
232 {
233 /* Advice that buffer was filled */
234 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
235 buf->vb.state = VIDEOBUF_DONE;
236 buf->vb.field_count++;
237 do_gettimeofday(&buf->vb.ts);
238
239 dev->video_mode.isoc_ctl.buf = NULL;
240
241 list_del(&buf->vb.queue);
242 wake_up(&buf->vb.done);
243 }
244
245 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
246 {
247 char *errmsg = "Unknown";
248
249 switch (status) {
250 case -ENOENT:
251 errmsg = "unlinked synchronuously";
252 break;
253 case -ECONNRESET:
254 errmsg = "unlinked asynchronuously";
255 break;
256 case -ENOSR:
257 errmsg = "Buffer error (overrun)";
258 break;
259 case -EPIPE:
260 errmsg = "Stalled (device not responding)";
261 break;
262 case -EOVERFLOW:
263 errmsg = "Babble (bad cable?)";
264 break;
265 case -EPROTO:
266 errmsg = "Bit-stuff error (bad cable?)";
267 break;
268 case -EILSEQ:
269 errmsg = "CRC/Timeout (could be anything)";
270 break;
271 case -ETIME:
272 errmsg = "Device does not respond";
273 break;
274 }
275 if (packet < 0) {
276 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
277 } else {
278 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
279 packet, status, errmsg);
280 }
281 }
282
283 /*
284 * video-buf generic routine to get the next available buffer
285 */
286 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
287 struct cx231xx_buffer **buf)
288 {
289 struct cx231xx_video_mode *vmode =
290 container_of(dma_q, struct cx231xx_video_mode, vidq);
291 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
292
293 char *outp;
294
295 if (list_empty(&dma_q->active)) {
296 cx231xx_isocdbg("No active queue to serve\n");
297 dev->video_mode.isoc_ctl.buf = NULL;
298 *buf = NULL;
299 return;
300 }
301
302 /* Get the next buffer */
303 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
304
305 /* Cleans up buffer - Usefull for testing for frame/URB loss */
306 outp = videobuf_to_vmalloc(&(*buf)->vb);
307 memset(outp, 0, (*buf)->vb.size);
308
309 dev->video_mode.isoc_ctl.buf = *buf;
310
311 return;
312 }
313
314 /*
315 * Controls the isoc copy of each urb packet
316 */
317 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
318 {
319 struct cx231xx_buffer *buf;
320 struct cx231xx_dmaqueue *dma_q = urb->context;
321 unsigned char *outp = NULL;
322 int i, rc = 1;
323 unsigned char *p_buffer;
324 u32 bytes_parsed = 0, buffer_size = 0;
325 u8 sav_eav = 0;
326
327 if (!dev)
328 return 0;
329
330 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
331 return 0;
332
333 if (urb->status < 0) {
334 print_err_status(dev, -1, urb->status);
335 if (urb->status == -ENOENT)
336 return 0;
337 }
338
339 buf = dev->video_mode.isoc_ctl.buf;
340 if (buf != NULL)
341 outp = videobuf_to_vmalloc(&buf->vb);
342
343 for (i = 0; i < urb->number_of_packets; i++) {
344 int status = urb->iso_frame_desc[i].status;
345
346 if (status < 0) {
347 print_err_status(dev, i, status);
348 if (urb->iso_frame_desc[i].status != -EPROTO)
349 continue;
350 }
351
352 if (urb->iso_frame_desc[i].actual_length <= 0) {
353 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
354 continue;
355 }
356 if (urb->iso_frame_desc[i].actual_length >
357 dev->video_mode.max_pkt_size) {
358 cx231xx_isocdbg("packet bigger than packet size");
359 continue;
360 }
361
362 /* get buffer pointer and length */
363 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
364 buffer_size = urb->iso_frame_desc[i].actual_length;
365 bytes_parsed = 0;
366
367 if (dma_q->is_partial_line) {
368 /* Handle the case of a partial line */
369 sav_eav = dma_q->last_sav;
370 } else {
371 /* Check for a SAV/EAV overlapping
372 the buffer boundary */
373 sav_eav =
374 cx231xx_find_boundary_SAV_EAV(p_buffer,
375 dma_q->partial_buf,
376 &bytes_parsed);
377 }
378
379 sav_eav &= 0xF0;
380 /* Get the first line if we have some portion of an SAV/EAV from
381 the last buffer or a partial line */
382 if (sav_eav) {
383 bytes_parsed += cx231xx_get_video_line(dev, dma_q,
384 sav_eav, /* SAV/EAV */
385 p_buffer + bytes_parsed, /* p_buffer */
386 buffer_size - bytes_parsed);/* buf size */
387 }
388
389 /* Now parse data that is completely in this buffer */
390 /* dma_q->is_partial_line = 0; */
391
392 while (bytes_parsed < buffer_size) {
393 u32 bytes_used = 0;
394
395 sav_eav = cx231xx_find_next_SAV_EAV(
396 p_buffer + bytes_parsed, /* p_buffer */
397 buffer_size - bytes_parsed, /* buf size */
398 &bytes_used);/* bytes used to get SAV/EAV */
399
400 bytes_parsed += bytes_used;
401
402 sav_eav &= 0xF0;
403 if (sav_eav && (bytes_parsed < buffer_size)) {
404 bytes_parsed += cx231xx_get_video_line(dev,
405 dma_q, sav_eav, /* SAV/EAV */
406 p_buffer + bytes_parsed,/* p_buffer */
407 buffer_size - bytes_parsed);/*buf size*/
408 }
409 }
410
411 /* Save the last four bytes of the buffer so we can check the
412 buffer boundary condition next time */
413 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
414 bytes_parsed = 0;
415
416 }
417 return rc;
418 }
419
420 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
421 u32 *p_bytes_used)
422 {
423 u32 bytes_used;
424 u8 boundary_bytes[8];
425 u8 sav_eav = 0;
426
427 *p_bytes_used = 0;
428
429 /* Create an array of the last 4 bytes of the last buffer and the first
430 4 bytes of the current buffer. */
431
432 memcpy(boundary_bytes, partial_buf, 4);
433 memcpy(boundary_bytes + 4, p_buffer, 4);
434
435 /* Check for the SAV/EAV in the boundary buffer */
436 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
437 &bytes_used);
438
439 if (sav_eav) {
440 /* found a boundary SAV/EAV. Updates the bytes used to reflect
441 only those used in the new buffer */
442 *p_bytes_used = bytes_used - 4;
443 }
444
445 return sav_eav;
446 }
447
448 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
449 {
450 u32 i;
451 u8 sav_eav = 0;
452
453 /*
454 * Don't search if the buffer size is less than 4. It causes a page
455 * fault since buffer_size - 4 evaluates to a large number in that
456 * case.
457 */
458 if (buffer_size < 4) {
459 *p_bytes_used = buffer_size;
460 return 0;
461 }
462
463 for (i = 0; i < (buffer_size - 3); i++) {
464
465 if ((p_buffer[i] == 0xFF) &&
466 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
467
468 *p_bytes_used = i + 4;
469 sav_eav = p_buffer[i + 3];
470 return sav_eav;
471 }
472 }
473
474 *p_bytes_used = buffer_size;
475 return 0;
476 }
477
478 u32 cx231xx_get_video_line(struct cx231xx *dev,
479 struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
480 u8 *p_buffer, u32 buffer_size)
481 {
482 u32 bytes_copied = 0;
483 int current_field = -1;
484
485 switch (sav_eav) {
486 case SAV_ACTIVE_VIDEO_FIELD1:
487 /* looking for skipped line which occurred in PAL 720x480 mode.
488 In this case, there will be no active data contained
489 between the SAV and EAV */
490 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
491 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
492 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
493 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
494 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
495 (p_buffer[3] == EAV_VBLANK_FIELD2)))
496 return bytes_copied;
497 current_field = 1;
498 break;
499
500 case SAV_ACTIVE_VIDEO_FIELD2:
501 /* looking for skipped line which occurred in PAL 720x480 mode.
502 In this case, there will be no active data contained between
503 the SAV and EAV */
504 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
505 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
506 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
507 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
508 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
509 (p_buffer[3] == EAV_VBLANK_FIELD2)))
510 return bytes_copied;
511 current_field = 2;
512 break;
513 }
514
515 dma_q->last_sav = sav_eav;
516
517 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
518 buffer_size, current_field);
519
520 return bytes_copied;
521 }
522
523 u32 cx231xx_copy_video_line(struct cx231xx *dev,
524 struct cx231xx_dmaqueue *dma_q, u8 *p_line,
525 u32 length, int field_number)
526 {
527 u32 bytes_to_copy;
528 struct cx231xx_buffer *buf;
529 u32 _line_size = dev->width * 2;
530
531 if (dma_q->current_field != field_number)
532 cx231xx_reset_video_buffer(dev, dma_q);
533
534 /* get the buffer pointer */
535 buf = dev->video_mode.isoc_ctl.buf;
536
537 /* Remember the field number for next time */
538 dma_q->current_field = field_number;
539
540 bytes_to_copy = dma_q->bytes_left_in_line;
541 if (bytes_to_copy > length)
542 bytes_to_copy = length;
543
544 if (dma_q->lines_completed >= dma_q->lines_per_field) {
545 dma_q->bytes_left_in_line -= bytes_to_copy;
546 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
547 0 : 1;
548 return 0;
549 }
550
551 dma_q->is_partial_line = 1;
552
553 /* If we don't have a buffer, just return the number of bytes we would
554 have copied if we had a buffer. */
555 if (!buf) {
556 dma_q->bytes_left_in_line -= bytes_to_copy;
557 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
558 ? 0 : 1;
559 return bytes_to_copy;
560 }
561
562 /* copy the data to video buffer */
563 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
564
565 dma_q->pos += bytes_to_copy;
566 dma_q->bytes_left_in_line -= bytes_to_copy;
567
568 if (dma_q->bytes_left_in_line == 0) {
569 dma_q->bytes_left_in_line = _line_size;
570 dma_q->lines_completed++;
571 dma_q->is_partial_line = 0;
572
573 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
574 buffer_filled(dev, dma_q, buf);
575
576 dma_q->pos = 0;
577 buf = NULL;
578 dma_q->lines_completed = 0;
579 }
580 }
581
582 return bytes_to_copy;
583 }
584
585 void cx231xx_reset_video_buffer(struct cx231xx *dev,
586 struct cx231xx_dmaqueue *dma_q)
587 {
588 struct cx231xx_buffer *buf;
589
590 /* handle the switch from field 1 to field 2 */
591 if (dma_q->current_field == 1) {
592 if (dma_q->lines_completed >= dma_q->lines_per_field)
593 dma_q->field1_done = 1;
594 else
595 dma_q->field1_done = 0;
596 }
597
598 buf = dev->video_mode.isoc_ctl.buf;
599
600 if (buf == NULL) {
601 u8 *outp = NULL;
602 /* first try to get the buffer */
603 get_next_buf(dma_q, &buf);
604
605 if (buf)
606 outp = videobuf_to_vmalloc(&buf->vb);
607
608 dma_q->pos = 0;
609 dma_q->field1_done = 0;
610 dma_q->current_field = -1;
611 }
612
613 /* reset the counters */
614 dma_q->bytes_left_in_line = dev->width << 1;
615 dma_q->lines_completed = 0;
616 }
617
618 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
619 u8 *p_buffer, u32 bytes_to_copy)
620 {
621 u8 *p_out_buffer = NULL;
622 u32 current_line_bytes_copied = 0;
623 struct cx231xx_buffer *buf;
624 u32 _line_size = dev->width << 1;
625 void *startwrite;
626 int offset, lencopy;
627
628 buf = dev->video_mode.isoc_ctl.buf;
629
630 if (buf == NULL)
631 return -1;
632
633 p_out_buffer = videobuf_to_vmalloc(&buf->vb);
634
635 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
636
637 /* Offset field 2 one line from the top of the buffer */
638 offset = (dma_q->current_field == 1) ? 0 : _line_size;
639
640 /* Offset for field 2 */
641 startwrite = p_out_buffer + offset;
642
643 /* lines already completed in the current field */
644 startwrite += (dma_q->lines_completed * _line_size * 2);
645
646 /* bytes already completed in the current line */
647 startwrite += current_line_bytes_copied;
648
649 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
650 bytes_to_copy : dma_q->bytes_left_in_line;
651
652 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
653 return 0;
654
655 /* The below copies the UYVY data straight into video buffer */
656 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
657
658 return 0;
659 }
660
661 void cx231xx_swab(u16 *from, u16 *to, u16 len)
662 {
663 u16 i;
664
665 if (len <= 0)
666 return;
667
668 for (i = 0; i < len / 2; i++)
669 to[i] = (from[i] << 8) | (from[i] >> 8);
670 }
671
672 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
673 {
674 u8 buffer_complete = 0;
675
676 /* Dual field stream */
677 buffer_complete = ((dma_q->current_field == 2) &&
678 (dma_q->lines_completed >= dma_q->lines_per_field) &&
679 dma_q->field1_done);
680
681 return buffer_complete;
682 }
683
684 /* ------------------------------------------------------------------
685 Videobuf operations
686 ------------------------------------------------------------------*/
687
688 static int
689 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
690 {
691 struct cx231xx_fh *fh = vq->priv_data;
692 struct cx231xx *dev = fh->dev;
693 struct v4l2_frequency f;
694
695 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
696 if (0 == *count)
697 *count = CX231XX_DEF_BUF;
698
699 if (*count < CX231XX_MIN_BUF)
700 *count = CX231XX_MIN_BUF;
701
702 /* Ask tuner to go to analog mode */
703 memset(&f, 0, sizeof(f));
704 f.frequency = dev->ctl_freq;
705 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
706
707 call_all(dev, tuner, s_frequency, &f);
708
709 return 0;
710 }
711
712 /* This is called *without* dev->slock held; please keep it that way */
713 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
714 {
715 struct cx231xx_fh *fh = vq->priv_data;
716 struct cx231xx *dev = fh->dev;
717 unsigned long flags = 0;
718
719 if (in_interrupt())
720 BUG();
721
722 /* We used to wait for the buffer to finish here, but this didn't work
723 because, as we were keeping the state as VIDEOBUF_QUEUED,
724 videobuf_queue_cancel marked it as finished for us.
725 (Also, it could wedge forever if the hardware was misconfigured.)
726
727 This should be safe; by the time we get here, the buffer isn't
728 queued anymore. If we ever start marking the buffers as
729 VIDEOBUF_ACTIVE, it won't be, though.
730 */
731 spin_lock_irqsave(&dev->video_mode.slock, flags);
732 if (dev->video_mode.isoc_ctl.buf == buf)
733 dev->video_mode.isoc_ctl.buf = NULL;
734 spin_unlock_irqrestore(&dev->video_mode.slock, flags);
735
736 videobuf_vmalloc_free(&buf->vb);
737 buf->vb.state = VIDEOBUF_NEEDS_INIT;
738 }
739
740 static int
741 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
742 enum v4l2_field field)
743 {
744 struct cx231xx_fh *fh = vq->priv_data;
745 struct cx231xx_buffer *buf =
746 container_of(vb, struct cx231xx_buffer, vb);
747 struct cx231xx *dev = fh->dev;
748 int rc = 0, urb_init = 0;
749
750 /* The only currently supported format is 16 bits/pixel */
751 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
752 + 7) >> 3;
753 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
754 return -EINVAL;
755
756 buf->vb.width = dev->width;
757 buf->vb.height = dev->height;
758 buf->vb.field = field;
759
760 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
761 rc = videobuf_iolock(vq, &buf->vb, NULL);
762 if (rc < 0)
763 goto fail;
764 }
765
766 if (!dev->video_mode.isoc_ctl.num_bufs)
767 urb_init = 1;
768
769 if (urb_init) {
770 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
771 CX231XX_NUM_BUFS,
772 dev->video_mode.max_pkt_size,
773 cx231xx_isoc_copy);
774 if (rc < 0)
775 goto fail;
776 }
777
778 buf->vb.state = VIDEOBUF_PREPARED;
779 return 0;
780
781 fail:
782 free_buffer(vq, buf);
783 return rc;
784 }
785
786 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
787 {
788 struct cx231xx_buffer *buf =
789 container_of(vb, struct cx231xx_buffer, vb);
790 struct cx231xx_fh *fh = vq->priv_data;
791 struct cx231xx *dev = fh->dev;
792 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
793
794 buf->vb.state = VIDEOBUF_QUEUED;
795 list_add_tail(&buf->vb.queue, &vidq->active);
796
797 }
798
799 static void buffer_release(struct videobuf_queue *vq,
800 struct videobuf_buffer *vb)
801 {
802 struct cx231xx_buffer *buf =
803 container_of(vb, struct cx231xx_buffer, vb);
804 struct cx231xx_fh *fh = vq->priv_data;
805 struct cx231xx *dev = (struct cx231xx *)fh->dev;
806
807 cx231xx_isocdbg("cx231xx: called buffer_release\n");
808
809 free_buffer(vq, buf);
810 }
811
812 static struct videobuf_queue_ops cx231xx_video_qops = {
813 .buf_setup = buffer_setup,
814 .buf_prepare = buffer_prepare,
815 .buf_queue = buffer_queue,
816 .buf_release = buffer_release,
817 };
818
819 /********************* v4l2 interface **************************************/
820
821 void video_mux(struct cx231xx *dev, int index)
822 {
823
824 struct v4l2_routing route;
825
826 route.input = INPUT(index)->vmux;
827 route.output = 0;
828 dev->video_input = index;
829 dev->ctl_ainput = INPUT(index)->amux;
830
831 cx231xx_set_video_input_mux(dev, index);
832
833 cx25840_call(dev, video, s_routing, &route);
834
835 cx231xx_set_audio_input(dev, dev->ctl_ainput);
836
837 cx231xx_info("video_mux : %d\n", index);
838
839 /* do mode control overrides if required */
840 cx231xx_do_mode_ctrl_overrides(dev);
841 }
842
843 /* Usage lock check functions */
844 static int res_get(struct cx231xx_fh *fh)
845 {
846 struct cx231xx *dev = fh->dev;
847 int rc = 0;
848
849 /* This instance already has stream_on */
850 if (fh->stream_on)
851 return rc;
852
853 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
854 if (dev->stream_on)
855 return -EBUSY;
856 dev->stream_on = 1;
857 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
858 if (dev->vbi_stream_on)
859 return -EBUSY;
860 dev->vbi_stream_on = 1;
861 } else
862 return -EINVAL;
863
864 fh->stream_on = 1;
865
866 return rc;
867 }
868
869 static int res_check(struct cx231xx_fh *fh)
870 {
871 return fh->stream_on;
872 }
873
874 static void res_free(struct cx231xx_fh *fh)
875 {
876 struct cx231xx *dev = fh->dev;
877
878 fh->stream_on = 0;
879
880 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
881 dev->stream_on = 0;
882 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
883 dev->vbi_stream_on = 0;
884 }
885
886 static int check_dev(struct cx231xx *dev)
887 {
888 if (dev->state & DEV_DISCONNECTED) {
889 cx231xx_errdev("v4l2 ioctl: device not present\n");
890 return -ENODEV;
891 }
892
893 if (dev->state & DEV_MISCONFIGURED) {
894 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
895 "close and open it again\n");
896 return -EIO;
897 }
898 return 0;
899 }
900
901 void get_scale(struct cx231xx *dev,
902 unsigned int width, unsigned int height,
903 unsigned int *hscale, unsigned int *vscale)
904 {
905 unsigned int maxw = norm_maxw(dev);
906 unsigned int maxh = norm_maxh(dev);
907
908 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
909 if (*hscale >= 0x4000)
910 *hscale = 0x3fff;
911
912 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
913 if (*vscale >= 0x4000)
914 *vscale = 0x3fff;
915
916 dev->hscale = *hscale;
917 dev->vscale = *vscale;
918
919 }
920
921 /* ------------------------------------------------------------------
922 IOCTL vidioc handling
923 ------------------------------------------------------------------*/
924
925 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
926 struct v4l2_format *f)
927 {
928 struct cx231xx_fh *fh = priv;
929 struct cx231xx *dev = fh->dev;
930
931 mutex_lock(&dev->lock);
932
933 f->fmt.pix.width = dev->width;
934 f->fmt.pix.height = dev->height;
935 f->fmt.pix.pixelformat = dev->format->fourcc;;
936 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
937 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
938 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
939
940 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
941
942 mutex_unlock(&dev->lock);
943
944 return 0;
945 }
946
947 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
948 {
949 unsigned int i;
950
951 for (i = 0; i < ARRAY_SIZE(format); i++)
952 if (format[i].fourcc == fourcc)
953 return &format[i];
954
955 return NULL;
956 }
957
958 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
959 struct v4l2_format *f)
960 {
961 struct cx231xx_fh *fh = priv;
962 struct cx231xx *dev = fh->dev;
963 int width = f->fmt.pix.width;
964 int height = f->fmt.pix.height;
965 unsigned int maxw = norm_maxw(dev);
966 unsigned int maxh = norm_maxh(dev);
967 unsigned int hscale, vscale;
968 struct cx231xx_fmt *fmt;
969
970 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
971 if (!fmt) {
972 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
973 f->fmt.pix.pixelformat);
974 return -EINVAL;
975 }
976
977 /* width must even because of the YUYV format
978 height must be even because of interlacing */
979 height &= 0xfffe;
980 width &= 0xfffe;
981
982 if (unlikely(height < 32))
983 height = 32;
984 if (unlikely(height > maxh))
985 height = maxh;
986 if (unlikely(width < 48))
987 width = 48;
988 if (unlikely(width > maxw))
989 width = maxw;
990
991 get_scale(dev, width, height, &hscale, &vscale);
992
993 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
994 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
995
996 f->fmt.pix.width = width;
997 f->fmt.pix.height = height;
998 f->fmt.pix.pixelformat = fmt->fourcc;
999 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1000 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1001 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1002 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1003
1004 return 0;
1005 }
1006
1007 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1008 struct v4l2_format *f)
1009 {
1010 struct cx231xx_fh *fh = priv;
1011 struct cx231xx *dev = fh->dev;
1012 int rc;
1013 struct cx231xx_fmt *fmt;
1014
1015 rc = check_dev(dev);
1016 if (rc < 0)
1017 return rc;
1018
1019 mutex_lock(&dev->lock);
1020
1021 vidioc_try_fmt_vid_cap(file, priv, f);
1022
1023 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1024 if (!fmt) {
1025 rc = -EINVAL;
1026 goto out;
1027 }
1028
1029 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1030 cx231xx_errdev("%s queue busy\n", __func__);
1031 rc = -EBUSY;
1032 goto out;
1033 }
1034
1035 if (dev->stream_on && !fh->stream_on) {
1036 cx231xx_errdev("%s device in use by another fh\n", __func__);
1037 rc = -EBUSY;
1038 goto out;
1039 }
1040
1041 /* set new image size */
1042 dev->width = f->fmt.pix.width;
1043 dev->height = f->fmt.pix.height;
1044 dev->format = fmt;
1045 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1046
1047 call_all(dev, video, s_fmt, f);
1048
1049 /* Set the correct alternate setting for this resolution */
1050 cx231xx_resolution_set(dev);
1051
1052 out:
1053 mutex_unlock(&dev->lock);
1054 return rc;
1055 }
1056
1057 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1058 {
1059 struct cx231xx_fh *fh = priv;
1060 struct cx231xx *dev = fh->dev;
1061
1062 *id = dev->norm;
1063 return 0;
1064 }
1065
1066 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1067 {
1068 struct cx231xx_fh *fh = priv;
1069 struct cx231xx *dev = fh->dev;
1070 struct v4l2_format f;
1071 int rc;
1072
1073 rc = check_dev(dev);
1074 if (rc < 0)
1075 return rc;
1076
1077 cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1078
1079 mutex_lock(&dev->lock);
1080 dev->norm = *norm;
1081
1082 /* Adjusts width/height, if needed */
1083 f.fmt.pix.width = dev->width;
1084 f.fmt.pix.height = dev->height;
1085 vidioc_try_fmt_vid_cap(file, priv, &f);
1086
1087 /* set new image size */
1088 dev->width = f.fmt.pix.width;
1089 dev->height = f.fmt.pix.height;
1090 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1091
1092 call_all(dev, core, s_std, dev->norm);
1093
1094 mutex_unlock(&dev->lock);
1095
1096 cx231xx_resolution_set(dev);
1097
1098 /* do mode control overrides */
1099 cx231xx_do_mode_ctrl_overrides(dev);
1100
1101 return 0;
1102 }
1103
1104 static const char *iname[] = {
1105 [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1106 [CX231XX_VMUX_SVIDEO] = "S-Video",
1107 [CX231XX_VMUX_TELEVISION] = "Television",
1108 [CX231XX_VMUX_CABLE] = "Cable TV",
1109 [CX231XX_VMUX_DVB] = "DVB",
1110 [CX231XX_VMUX_DEBUG] = "for debug only",
1111 };
1112
1113 static int vidioc_enum_input(struct file *file, void *priv,
1114 struct v4l2_input *i)
1115 {
1116 struct cx231xx_fh *fh = priv;
1117 struct cx231xx *dev = fh->dev;
1118 unsigned int n;
1119
1120 n = i->index;
1121 if (n >= MAX_CX231XX_INPUT)
1122 return -EINVAL;
1123 if (0 == INPUT(n)->type)
1124 return -EINVAL;
1125
1126 i->index = n;
1127 i->type = V4L2_INPUT_TYPE_CAMERA;
1128
1129 strcpy(i->name, iname[INPUT(n)->type]);
1130
1131 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1132 (CX231XX_VMUX_CABLE == INPUT(n)->type))
1133 i->type = V4L2_INPUT_TYPE_TUNER;
1134
1135 i->std = dev->vdev->tvnorms;
1136
1137 return 0;
1138 }
1139
1140 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1141 {
1142 struct cx231xx_fh *fh = priv;
1143 struct cx231xx *dev = fh->dev;
1144
1145 *i = dev->video_input;
1146
1147 return 0;
1148 }
1149
1150 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1151 {
1152 struct cx231xx_fh *fh = priv;
1153 struct cx231xx *dev = fh->dev;
1154 int rc;
1155
1156 rc = check_dev(dev);
1157 if (rc < 0)
1158 return rc;
1159
1160 if (i >= MAX_CX231XX_INPUT)
1161 return -EINVAL;
1162 if (0 == INPUT(i)->type)
1163 return -EINVAL;
1164
1165 mutex_lock(&dev->lock);
1166
1167 video_mux(dev, i);
1168
1169 mutex_unlock(&dev->lock);
1170 return 0;
1171 }
1172
1173 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1174 {
1175 struct cx231xx_fh *fh = priv;
1176 struct cx231xx *dev = fh->dev;
1177
1178 switch (a->index) {
1179 case CX231XX_AMUX_VIDEO:
1180 strcpy(a->name, "Television");
1181 break;
1182 case CX231XX_AMUX_LINE_IN:
1183 strcpy(a->name, "Line In");
1184 break;
1185 default:
1186 return -EINVAL;
1187 }
1188
1189 a->index = dev->ctl_ainput;
1190 a->capability = V4L2_AUDCAP_STEREO;
1191
1192 return 0;
1193 }
1194
1195 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1196 {
1197 struct cx231xx_fh *fh = priv;
1198 struct cx231xx *dev = fh->dev;
1199 int status = 0;
1200
1201 /* Doesn't allow manual routing */
1202 if (a->index != dev->ctl_ainput)
1203 return -EINVAL;
1204
1205 dev->ctl_ainput = INPUT(a->index)->amux;
1206 status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1207
1208 return status;
1209 }
1210
1211 static int vidioc_queryctrl(struct file *file, void *priv,
1212 struct v4l2_queryctrl *qc)
1213 {
1214 struct cx231xx_fh *fh = priv;
1215 struct cx231xx *dev = fh->dev;
1216 int id = qc->id;
1217 int i;
1218 int rc;
1219
1220 rc = check_dev(dev);
1221 if (rc < 0)
1222 return rc;
1223
1224 qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1225 if (unlikely(qc->id == 0))
1226 return -EINVAL;
1227
1228 memset(qc, 0, sizeof(*qc));
1229
1230 qc->id = id;
1231
1232 if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1233 return -EINVAL;
1234
1235 for (i = 0; i < CX231XX_CTLS; i++)
1236 if (cx231xx_ctls[i].v.id == qc->id)
1237 break;
1238
1239 if (i == CX231XX_CTLS) {
1240 *qc = no_ctl;
1241 return 0;
1242 }
1243 *qc = cx231xx_ctls[i].v;
1244
1245 mutex_lock(&dev->lock);
1246 call_all(dev, core, queryctrl, qc);
1247 mutex_unlock(&dev->lock);
1248
1249 if (qc->type)
1250 return 0;
1251 else
1252 return -EINVAL;
1253 }
1254
1255 static int vidioc_g_ctrl(struct file *file, void *priv,
1256 struct v4l2_control *ctrl)
1257 {
1258 struct cx231xx_fh *fh = priv;
1259 struct cx231xx *dev = fh->dev;
1260 int rc;
1261
1262 rc = check_dev(dev);
1263 if (rc < 0)
1264 return rc;
1265
1266 mutex_lock(&dev->lock);
1267 call_all(dev, core, g_ctrl, ctrl);
1268 mutex_unlock(&dev->lock);
1269 return rc;
1270 }
1271
1272 static int vidioc_s_ctrl(struct file *file, void *priv,
1273 struct v4l2_control *ctrl)
1274 {
1275 struct cx231xx_fh *fh = priv;
1276 struct cx231xx *dev = fh->dev;
1277 int rc;
1278
1279 rc = check_dev(dev);
1280 if (rc < 0)
1281 return rc;
1282
1283 mutex_lock(&dev->lock);
1284 call_all(dev, core, s_ctrl, ctrl);
1285 mutex_unlock(&dev->lock);
1286 return rc;
1287 }
1288
1289 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1290 {
1291 struct cx231xx_fh *fh = priv;
1292 struct cx231xx *dev = fh->dev;
1293 int rc;
1294
1295 rc = check_dev(dev);
1296 if (rc < 0)
1297 return rc;
1298
1299 if (0 != t->index)
1300 return -EINVAL;
1301
1302 strcpy(t->name, "Tuner");
1303
1304 t->type = V4L2_TUNER_ANALOG_TV;
1305 t->capability = V4L2_TUNER_CAP_NORM;
1306 t->rangehigh = 0xffffffffUL;
1307 t->signal = 0xffff; /* LOCKED */
1308
1309 return 0;
1310 }
1311
1312 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1313 {
1314 struct cx231xx_fh *fh = priv;
1315 struct cx231xx *dev = fh->dev;
1316 int rc;
1317
1318 rc = check_dev(dev);
1319 if (rc < 0)
1320 return rc;
1321
1322 if (0 != t->index)
1323 return -EINVAL;
1324 #if 0
1325 mutex_lock(&dev->lock);
1326 call_all(dev, tuner, s_tuner, t);
1327 mutex_unlock(&dev->lock);
1328 #endif
1329 return 0;
1330 }
1331
1332 static int vidioc_g_frequency(struct file *file, void *priv,
1333 struct v4l2_frequency *f)
1334 {
1335 struct cx231xx_fh *fh = priv;
1336 struct cx231xx *dev = fh->dev;
1337
1338 mutex_lock(&dev->lock);
1339 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1340 f->frequency = dev->ctl_freq;
1341
1342 call_all(dev, tuner, g_frequency, f);
1343
1344 mutex_unlock(&dev->lock);
1345
1346 return 0;
1347 }
1348
1349 static int vidioc_s_frequency(struct file *file, void *priv,
1350 struct v4l2_frequency *f)
1351 {
1352 struct cx231xx_fh *fh = priv;
1353 struct cx231xx *dev = fh->dev;
1354 int rc;
1355
1356 rc = check_dev(dev);
1357 if (rc < 0)
1358 return rc;
1359
1360 if (0 != f->tuner)
1361 return -EINVAL;
1362
1363 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1364 return -EINVAL;
1365 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1366 return -EINVAL;
1367
1368 /* set pre channel change settings in DIF first */
1369 rc = cx231xx_tuner_pre_channel_change(dev);
1370
1371 mutex_lock(&dev->lock);
1372
1373 dev->ctl_freq = f->frequency;
1374
1375 if (dev->tuner_type == TUNER_XC5000) {
1376 if (dev->cx231xx_set_analog_freq != NULL)
1377 dev->cx231xx_set_analog_freq(dev, f->frequency);
1378 } else
1379 call_all(dev, tuner, s_frequency, f);
1380
1381 mutex_unlock(&dev->lock);
1382
1383 /* set post channel change settings in DIF first */
1384 rc = cx231xx_tuner_post_channel_change(dev);
1385
1386 cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1387
1388 return rc;
1389 }
1390
1391 #ifdef CONFIG_VIDEO_ADV_DEBUG
1392
1393 /*
1394 -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1395 chip=<chip>[,min=<addr>,max=<addr>]
1396 dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1397 -r, --set-register=type=<host/i2cdrv/i2caddr>,
1398 chip=<chip>,reg=<addr>,val=<val>
1399 set the register [VIDIOC_DBG_S_REGISTER]
1400
1401 if type == host, then <chip> is the hosts chip ID (default 0)
1402 if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1403 if type == i2caddr, then <chip> is the 7-bit I2C address
1404 */
1405
1406 static int vidioc_g_register(struct file *file, void *priv,
1407 struct v4l2_dbg_register *reg)
1408 {
1409 struct cx231xx_fh *fh = priv;
1410 struct cx231xx *dev = fh->dev;
1411 int ret = 0;
1412 u8 value[4] = { 0, 0, 0, 0 };
1413 u32 data = 0;
1414
1415 switch (reg->match.type) {
1416 case V4L2_CHIP_MATCH_HOST:
1417 switch (reg->match.addr) {
1418 case 0: /* Cx231xx - internal registers */
1419 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1420 (u16)reg->reg, value, 4);
1421 reg->val = value[0] | value[1] << 8 |
1422 value[2] << 16 | value[3] << 24;
1423 break;
1424 case 1: /* AFE - read byte */
1425 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1426 (u16)reg->reg, 2, &data, 1);
1427 reg->val = le32_to_cpu(data & 0xff);
1428 break;
1429 case 14: /* AFE - read dword */
1430 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1431 (u16)reg->reg, 2, &data, 4);
1432 reg->val = le32_to_cpu(data);
1433 break;
1434 case 2: /* Video Block - read byte */
1435 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1436 (u16)reg->reg, 2, &data, 1);
1437 reg->val = le32_to_cpu(data & 0xff);
1438 break;
1439 case 24: /* Video Block - read dword */
1440 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1441 (u16)reg->reg, 2, &data, 4);
1442 reg->val = le32_to_cpu(data);
1443 break;
1444 case 3: /* I2S block - read byte */
1445 ret = cx231xx_read_i2c_data(dev,
1446 I2S_BLK_DEVICE_ADDRESS,
1447 (u16)reg->reg, 1,
1448 &data, 1);
1449 reg->val = le32_to_cpu(data & 0xff);
1450 break;
1451 case 34: /* I2S Block - read dword */
1452 ret =
1453 cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1454 (u16)reg->reg, 1, &data, 4);
1455 reg->val = le32_to_cpu(data);
1456 break;
1457 }
1458 return ret < 0 ? ret : 0;
1459
1460 case V4L2_CHIP_MATCH_I2C_DRIVER:
1461 call_all(dev, core, g_register, reg);
1462 return 0;
1463 case V4L2_CHIP_MATCH_I2C_ADDR:
1464 /* Not supported yet */
1465 return -EINVAL;
1466 default:
1467 if (!v4l2_chip_match_host(&reg->match))
1468 return -EINVAL;
1469 }
1470
1471 mutex_lock(&dev->lock);
1472 call_all(dev, core, g_register, reg);
1473 mutex_unlock(&dev->lock);
1474
1475 return ret;
1476 }
1477
1478 static int vidioc_s_register(struct file *file, void *priv,
1479 struct v4l2_dbg_register *reg)
1480 {
1481 struct cx231xx_fh *fh = priv;
1482 struct cx231xx *dev = fh->dev;
1483 int ret = 0;
1484 __le64 buf;
1485 u32 value;
1486 u8 data[4] = { 0, 0, 0, 0 };
1487
1488 buf = cpu_to_le64(reg->val);
1489
1490 switch (reg->match.type) {
1491 case V4L2_CHIP_MATCH_HOST:
1492 {
1493 value = (u32) buf & 0xffffffff;
1494
1495 switch (reg->match.addr) {
1496 case 0: /* cx231xx internal registers */
1497 data[0] = (u8) value;
1498 data[1] = (u8) (value >> 8);
1499 data[2] = (u8) (value >> 16);
1500 data[3] = (u8) (value >> 24);
1501 ret = cx231xx_write_ctrl_reg(dev,
1502 VRT_SET_REGISTER,
1503 (u16)reg->reg, data,
1504 4);
1505 break;
1506 case 1: /* AFE - read byte */
1507 ret = cx231xx_write_i2c_data(dev,
1508 AFE_DEVICE_ADDRESS,
1509 (u16)reg->reg, 2,
1510 value, 1);
1511 break;
1512 case 14: /* AFE - read dword */
1513 ret = cx231xx_write_i2c_data(dev,
1514 AFE_DEVICE_ADDRESS,
1515 (u16)reg->reg, 2,
1516 value, 4);
1517 break;
1518 case 2: /* Video Block - read byte */
1519 ret =
1520 cx231xx_write_i2c_data(dev,
1521 VID_BLK_I2C_ADDRESS,
1522 (u16)reg->reg, 2,
1523 value, 1);
1524 break;
1525 case 24: /* Video Block - read dword */
1526 ret =
1527 cx231xx_write_i2c_data(dev,
1528 VID_BLK_I2C_ADDRESS,
1529 (u16)reg->reg, 2,
1530 value, 4);
1531 break;
1532 case 3: /* I2S block - read byte */
1533 ret =
1534 cx231xx_write_i2c_data(dev,
1535 I2S_BLK_DEVICE_ADDRESS,
1536 (u16)reg->reg, 1,
1537 value, 1);
1538 break;
1539 case 34: /* I2S block - read dword */
1540 ret =
1541 cx231xx_write_i2c_data(dev,
1542 I2S_BLK_DEVICE_ADDRESS,
1543 (u16)reg->reg, 1,
1544 value, 4);
1545 break;
1546 }
1547 }
1548 return ret < 0 ? ret : 0;
1549
1550 default:
1551 break;
1552 }
1553
1554 mutex_lock(&dev->lock);
1555 call_all(dev, core, s_register, reg);
1556 mutex_unlock(&dev->lock);
1557
1558 return ret;
1559 }
1560 #endif
1561
1562 static int vidioc_cropcap(struct file *file, void *priv,
1563 struct v4l2_cropcap *cc)
1564 {
1565 struct cx231xx_fh *fh = priv;
1566 struct cx231xx *dev = fh->dev;
1567
1568 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1569 return -EINVAL;
1570
1571 cc->bounds.left = 0;
1572 cc->bounds.top = 0;
1573 cc->bounds.width = dev->width;
1574 cc->bounds.height = dev->height;
1575 cc->defrect = cc->bounds;
1576 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1577 cc->pixelaspect.denominator = 59;
1578
1579 return 0;
1580 }
1581
1582 static int vidioc_streamon(struct file *file, void *priv,
1583 enum v4l2_buf_type type)
1584 {
1585 struct cx231xx_fh *fh = priv;
1586 struct cx231xx *dev = fh->dev;
1587 int rc;
1588
1589 rc = check_dev(dev);
1590 if (rc < 0)
1591 return rc;
1592
1593 mutex_lock(&dev->lock);
1594 rc = res_get(fh);
1595
1596 if (likely(rc >= 0))
1597 rc = videobuf_streamon(&fh->vb_vidq);
1598
1599 call_all(dev, video, s_stream, 1);
1600
1601 mutex_unlock(&dev->lock);
1602
1603 return rc;
1604 }
1605
1606 static int vidioc_streamoff(struct file *file, void *priv,
1607 enum v4l2_buf_type type)
1608 {
1609 struct cx231xx_fh *fh = priv;
1610 struct cx231xx *dev = fh->dev;
1611 int rc;
1612
1613 rc = check_dev(dev);
1614 if (rc < 0)
1615 return rc;
1616
1617 if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1618 (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1619 return -EINVAL;
1620 if (type != fh->type)
1621 return -EINVAL;
1622
1623 mutex_lock(&dev->lock);
1624
1625 cx25840_call(dev, video, s_stream, 0);
1626
1627 videobuf_streamoff(&fh->vb_vidq);
1628 res_free(fh);
1629
1630 mutex_unlock(&dev->lock);
1631
1632 return 0;
1633 }
1634
1635 static int vidioc_querycap(struct file *file, void *priv,
1636 struct v4l2_capability *cap)
1637 {
1638 struct cx231xx_fh *fh = priv;
1639 struct cx231xx *dev = fh->dev;
1640
1641 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1642 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1643 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1644
1645 cap->version = CX231XX_VERSION_CODE;
1646
1647 cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1648 #if 0
1649 V4L2_CAP_SLICED_VBI_CAPTURE |
1650 #endif
1651 V4L2_CAP_VIDEO_CAPTURE |
1652 V4L2_CAP_AUDIO |
1653 V4L2_CAP_READWRITE |
1654 V4L2_CAP_STREAMING;
1655
1656 if (dev->tuner_type != TUNER_ABSENT)
1657 cap->capabilities |= V4L2_CAP_TUNER;
1658
1659 return 0;
1660 }
1661
1662 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1663 struct v4l2_fmtdesc *f)
1664 {
1665 if (unlikely(f->index >= ARRAY_SIZE(format)))
1666 return -EINVAL;
1667
1668 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1669 f->pixelformat = format[f->index].fourcc;
1670
1671 return 0;
1672 }
1673
1674 /* Sliced VBI ioctls */
1675 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1676 struct v4l2_format *f)
1677 {
1678 struct cx231xx_fh *fh = priv;
1679 struct cx231xx *dev = fh->dev;
1680 int rc;
1681
1682 rc = check_dev(dev);
1683 if (rc < 0)
1684 return rc;
1685
1686 mutex_lock(&dev->lock);
1687
1688 f->fmt.sliced.service_set = 0;
1689
1690 call_all(dev, video, g_fmt, f);
1691
1692 if (f->fmt.sliced.service_set == 0)
1693 rc = -EINVAL;
1694
1695 mutex_unlock(&dev->lock);
1696 return rc;
1697 }
1698
1699 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1700 struct v4l2_format *f)
1701 {
1702 struct cx231xx_fh *fh = priv;
1703 struct cx231xx *dev = fh->dev;
1704 int rc;
1705
1706 rc = check_dev(dev);
1707 if (rc < 0)
1708 return rc;
1709
1710 mutex_lock(&dev->lock);
1711 call_all(dev, video, g_fmt, f);
1712 mutex_unlock(&dev->lock);
1713
1714 if (f->fmt.sliced.service_set == 0)
1715 return -EINVAL;
1716
1717 return 0;
1718 }
1719
1720 /* RAW VBI ioctls */
1721
1722 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1723 struct v4l2_format *f)
1724 {
1725 struct cx231xx_fh *fh = priv;
1726 struct cx231xx *dev = fh->dev;
1727
1728 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1729 35468950 : 28636363;
1730 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1731 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1732 f->fmt.vbi.offset = 64 * 4;
1733 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1734 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1735 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1736 PAL_VBI_LINES : NTSC_VBI_LINES;
1737 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1738 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1739 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1740
1741 return 0;
1742
1743 }
1744
1745 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1746 struct v4l2_format *f)
1747 {
1748 struct cx231xx_fh *fh = priv;
1749 struct cx231xx *dev = fh->dev;
1750
1751 if (dev->vbi_stream_on && !fh->stream_on) {
1752 cx231xx_errdev("%s device in use by another fh\n", __func__);
1753 return -EBUSY;
1754 }
1755
1756 f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1757 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1758 35468950 : 28636363;
1759 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1760 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1761 f->fmt.vbi.offset = 244;
1762 f->fmt.vbi.flags = 0;
1763 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1764 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1765 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1766 PAL_VBI_LINES : NTSC_VBI_LINES;
1767 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1768 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1769 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1770
1771 return 0;
1772
1773 }
1774
1775 static int vidioc_reqbufs(struct file *file, void *priv,
1776 struct v4l2_requestbuffers *rb)
1777 {
1778 struct cx231xx_fh *fh = priv;
1779 struct cx231xx *dev = fh->dev;
1780 int rc;
1781
1782 rc = check_dev(dev);
1783 if (rc < 0)
1784 return rc;
1785
1786 return videobuf_reqbufs(&fh->vb_vidq, rb);
1787 }
1788
1789 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1790 {
1791 struct cx231xx_fh *fh = priv;
1792 struct cx231xx *dev = fh->dev;
1793 int rc;
1794
1795 rc = check_dev(dev);
1796 if (rc < 0)
1797 return rc;
1798
1799 return videobuf_querybuf(&fh->vb_vidq, b);
1800 }
1801
1802 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1803 {
1804 struct cx231xx_fh *fh = priv;
1805 struct cx231xx *dev = fh->dev;
1806 int rc;
1807
1808 rc = check_dev(dev);
1809 if (rc < 0)
1810 return rc;
1811
1812 return videobuf_qbuf(&fh->vb_vidq, b);
1813 }
1814
1815 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1816 {
1817 struct cx231xx_fh *fh = priv;
1818 struct cx231xx *dev = fh->dev;
1819 int rc;
1820
1821 rc = check_dev(dev);
1822 if (rc < 0)
1823 return rc;
1824
1825 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1826 }
1827
1828 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1829 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1830 {
1831 struct cx231xx_fh *fh = priv;
1832
1833 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1834 }
1835 #endif
1836
1837 /* ----------------------------------------------------------- */
1838 /* RADIO ESPECIFIC IOCTLS */
1839 /* ----------------------------------------------------------- */
1840
1841 static int radio_querycap(struct file *file, void *priv,
1842 struct v4l2_capability *cap)
1843 {
1844 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1845
1846 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1847 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1848 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1849
1850 cap->version = CX231XX_VERSION_CODE;
1851 cap->capabilities = V4L2_CAP_TUNER;
1852 return 0;
1853 }
1854
1855 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1856 {
1857 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1858
1859 if (unlikely(t->index > 0))
1860 return -EINVAL;
1861
1862 strcpy(t->name, "Radio");
1863 t->type = V4L2_TUNER_RADIO;
1864
1865 mutex_lock(&dev->lock);
1866 call_all(dev, tuner, s_tuner, t);
1867 mutex_unlock(&dev->lock);
1868
1869 return 0;
1870 }
1871
1872 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1873 {
1874 if (i->index != 0)
1875 return -EINVAL;
1876 strcpy(i->name, "Radio");
1877 i->type = V4L2_INPUT_TYPE_TUNER;
1878
1879 return 0;
1880 }
1881
1882 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1883 {
1884 if (unlikely(a->index))
1885 return -EINVAL;
1886
1887 strcpy(a->name, "Radio");
1888 return 0;
1889 }
1890
1891 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1892 {
1893 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1894
1895 if (0 != t->index)
1896 return -EINVAL;
1897
1898 mutex_lock(&dev->lock);
1899 call_all(dev, tuner, s_tuner, t);
1900 mutex_unlock(&dev->lock);
1901
1902 return 0;
1903 }
1904
1905 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1906 {
1907 return 0;
1908 }
1909
1910 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1911 {
1912 return 0;
1913 }
1914
1915 static int radio_queryctrl(struct file *file, void *priv,
1916 struct v4l2_queryctrl *c)
1917 {
1918 int i;
1919
1920 if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1921 return -EINVAL;
1922 if (c->id == V4L2_CID_AUDIO_MUTE) {
1923 for (i = 0; i < CX231XX_CTLS; i++)
1924 if (cx231xx_ctls[i].v.id == c->id)
1925 break;
1926 *c = cx231xx_ctls[i].v;
1927 } else
1928 *c = no_ctl;
1929 return 0;
1930 }
1931
1932 /*
1933 * cx231xx_v4l2_open()
1934 * inits the device and starts isoc transfer
1935 */
1936 static int cx231xx_v4l2_open(struct file *filp)
1937 {
1938 int minor = video_devdata(filp)->minor;
1939 int errCode = 0, radio = 0;
1940 struct cx231xx *dev = NULL;
1941 struct cx231xx_fh *fh;
1942 enum v4l2_buf_type fh_type = 0;
1943
1944 dev = cx231xx_get_device(minor, &fh_type, &radio);
1945 if (NULL == dev)
1946 return -ENODEV;
1947
1948 mutex_lock(&dev->lock);
1949
1950 cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1951 minor, v4l2_type_names[fh_type], dev->users);
1952
1953 #if 0
1954 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1955 if (errCode < 0) {
1956 cx231xx_errdev
1957 ("Device locked on digital mode. Can't open analog\n");
1958 mutex_unlock(&dev->lock);
1959 return -EBUSY;
1960 }
1961 #endif
1962
1963 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1964 if (!fh) {
1965 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1966 mutex_unlock(&dev->lock);
1967 return -ENOMEM;
1968 }
1969 fh->dev = dev;
1970 fh->radio = radio;
1971 fh->type = fh_type;
1972 filp->private_data = fh;
1973
1974 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1975 dev->width = norm_maxw(dev);
1976 dev->height = norm_maxh(dev);
1977 dev->hscale = 0;
1978 dev->vscale = 0;
1979
1980 /* Power up in Analog TV mode */
1981 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1982
1983 #if 0
1984 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1985 #endif
1986 cx231xx_resolution_set(dev);
1987
1988 /* set video alternate setting */
1989 cx231xx_set_video_alternate(dev);
1990
1991 /* Needed, since GPIO might have disabled power of
1992 some i2c device */
1993 cx231xx_config_i2c(dev);
1994
1995 /* device needs to be initialized before isoc transfer */
1996 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1997 video_mux(dev, dev->video_input);
1998
1999 }
2000 if (fh->radio) {
2001 cx231xx_videodbg("video_open: setting radio device\n");
2002
2003 /* cx231xx_start_radio(dev); */
2004
2005 call_all(dev, tuner, s_radio);
2006 }
2007
2008 dev->users++;
2009
2010 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2011 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2012 NULL, &dev->video_mode.slock,
2013 fh->type, V4L2_FIELD_INTERLACED,
2014 sizeof(struct cx231xx_buffer), fh);
2015 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2016 /* Set the required alternate setting VBI interface works in
2017 Bulk mode only */
2018 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2019
2020 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2021 NULL, &dev->vbi_mode.slock,
2022 fh->type, V4L2_FIELD_SEQ_TB,
2023 sizeof(struct cx231xx_buffer), fh);
2024 }
2025
2026 mutex_unlock(&dev->lock);
2027
2028 return errCode;
2029 }
2030
2031 /*
2032 * cx231xx_realease_resources()
2033 * unregisters the v4l2,i2c and usb devices
2034 * called when the device gets disconected or at module unload
2035 */
2036 void cx231xx_release_analog_resources(struct cx231xx *dev)
2037 {
2038
2039 /*FIXME: I2C IR should be disconnected */
2040
2041 if (dev->radio_dev) {
2042 if (-1 != dev->radio_dev->minor)
2043 video_unregister_device(dev->radio_dev);
2044 else
2045 video_device_release(dev->radio_dev);
2046 dev->radio_dev = NULL;
2047 }
2048 if (dev->vbi_dev) {
2049 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2050 dev->vbi_dev->num);
2051 if (-1 != dev->vbi_dev->minor)
2052 video_unregister_device(dev->vbi_dev);
2053 else
2054 video_device_release(dev->vbi_dev);
2055 dev->vbi_dev = NULL;
2056 }
2057 if (dev->vdev) {
2058 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2059 dev->vdev->num);
2060 if (-1 != dev->vdev->minor)
2061 video_unregister_device(dev->vdev);
2062 else
2063 video_device_release(dev->vdev);
2064 dev->vdev = NULL;
2065 }
2066 }
2067
2068 /*
2069 * cx231xx_v4l2_close()
2070 * stops streaming and deallocates all resources allocated by the v4l2
2071 * calls and ioctls
2072 */
2073 static int cx231xx_v4l2_close(struct file *filp)
2074 {
2075 struct cx231xx_fh *fh = filp->private_data;
2076 struct cx231xx *dev = fh->dev;
2077
2078 cx231xx_videodbg("users=%d\n", dev->users);
2079
2080 mutex_lock(&dev->lock);
2081
2082 if (res_check(fh))
2083 res_free(fh);
2084
2085 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2086 videobuf_stop(&fh->vb_vidq);
2087 videobuf_mmap_free(&fh->vb_vidq);
2088
2089 /* the device is already disconnect,
2090 free the remaining resources */
2091 if (dev->state & DEV_DISCONNECTED) {
2092 cx231xx_release_resources(dev);
2093 mutex_unlock(&dev->lock);
2094 kfree(dev);
2095 return 0;
2096 }
2097
2098 /* do this before setting alternate! */
2099 cx231xx_uninit_vbi_isoc(dev);
2100
2101 /* set alternate 0 */
2102 if (!dev->vbi_or_sliced_cc_mode)
2103 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2104 else
2105 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2106
2107 kfree(fh);
2108 dev->users--;
2109 wake_up_interruptible_nr(&dev->open, 1);
2110 mutex_unlock(&dev->lock);
2111 return 0;
2112 }
2113
2114 if (dev->users == 1) {
2115 videobuf_stop(&fh->vb_vidq);
2116 videobuf_mmap_free(&fh->vb_vidq);
2117
2118 /* the device is already disconnect,
2119 free the remaining resources */
2120 if (dev->state & DEV_DISCONNECTED) {
2121 cx231xx_release_resources(dev);
2122 mutex_unlock(&dev->lock);
2123 kfree(dev);
2124 return 0;
2125 }
2126
2127 /* Save some power by putting tuner to sleep */
2128 call_all(dev, tuner, s_standby);
2129
2130 /* do this before setting alternate! */
2131 cx231xx_uninit_isoc(dev);
2132 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2133
2134 /* set alternate 0 */
2135 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2136 }
2137 kfree(fh);
2138 dev->users--;
2139 wake_up_interruptible_nr(&dev->open, 1);
2140 mutex_unlock(&dev->lock);
2141 return 0;
2142 }
2143
2144 /*
2145 * cx231xx_v4l2_read()
2146 * will allocate buffers when called for the first time
2147 */
2148 static ssize_t
2149 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2150 loff_t *pos)
2151 {
2152 struct cx231xx_fh *fh = filp->private_data;
2153 struct cx231xx *dev = fh->dev;
2154 int rc;
2155
2156 rc = check_dev(dev);
2157 if (rc < 0)
2158 return rc;
2159
2160 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2161 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2162 mutex_lock(&dev->lock);
2163 rc = res_get(fh);
2164 mutex_unlock(&dev->lock);
2165
2166 if (unlikely(rc < 0))
2167 return rc;
2168
2169 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2170 filp->f_flags & O_NONBLOCK);
2171 }
2172 return 0;
2173 }
2174
2175 /*
2176 * cx231xx_v4l2_poll()
2177 * will allocate buffers when called for the first time
2178 */
2179 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2180 {
2181 struct cx231xx_fh *fh = filp->private_data;
2182 struct cx231xx *dev = fh->dev;
2183 int rc;
2184
2185 rc = check_dev(dev);
2186 if (rc < 0)
2187 return rc;
2188
2189 mutex_lock(&dev->lock);
2190 rc = res_get(fh);
2191 mutex_unlock(&dev->lock);
2192
2193 if (unlikely(rc < 0))
2194 return POLLERR;
2195
2196 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2197 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2198 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2199 else
2200 return POLLERR;
2201 }
2202
2203 /*
2204 * cx231xx_v4l2_mmap()
2205 */
2206 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2207 {
2208 struct cx231xx_fh *fh = filp->private_data;
2209 struct cx231xx *dev = fh->dev;
2210 int rc;
2211
2212 rc = check_dev(dev);
2213 if (rc < 0)
2214 return rc;
2215
2216 mutex_lock(&dev->lock);
2217 rc = res_get(fh);
2218 mutex_unlock(&dev->lock);
2219
2220 if (unlikely(rc < 0))
2221 return rc;
2222
2223 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2224
2225 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2226 (unsigned long)vma->vm_start,
2227 (unsigned long)vma->vm_end -
2228 (unsigned long)vma->vm_start, rc);
2229
2230 return rc;
2231 }
2232
2233 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2234 .owner = THIS_MODULE,
2235 .open = cx231xx_v4l2_open,
2236 .release = cx231xx_v4l2_close,
2237 .read = cx231xx_v4l2_read,
2238 .poll = cx231xx_v4l2_poll,
2239 .mmap = cx231xx_v4l2_mmap,
2240 .ioctl = video_ioctl2,
2241 };
2242
2243 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2244 .vidioc_querycap = vidioc_querycap,
2245 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2246 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2247 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2248 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2249 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2250 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2251 .vidioc_s_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2252 .vidioc_g_audio = vidioc_g_audio,
2253 .vidioc_s_audio = vidioc_s_audio,
2254 .vidioc_cropcap = vidioc_cropcap,
2255 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2256 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2257 .vidioc_reqbufs = vidioc_reqbufs,
2258 .vidioc_querybuf = vidioc_querybuf,
2259 .vidioc_qbuf = vidioc_qbuf,
2260 .vidioc_dqbuf = vidioc_dqbuf,
2261 .vidioc_s_std = vidioc_s_std,
2262 .vidioc_g_std = vidioc_g_std,
2263 .vidioc_enum_input = vidioc_enum_input,
2264 .vidioc_g_input = vidioc_g_input,
2265 .vidioc_s_input = vidioc_s_input,
2266 .vidioc_queryctrl = vidioc_queryctrl,
2267 .vidioc_g_ctrl = vidioc_g_ctrl,
2268 .vidioc_s_ctrl = vidioc_s_ctrl,
2269 .vidioc_streamon = vidioc_streamon,
2270 .vidioc_streamoff = vidioc_streamoff,
2271 .vidioc_g_tuner = vidioc_g_tuner,
2272 .vidioc_s_tuner = vidioc_s_tuner,
2273 .vidioc_g_frequency = vidioc_g_frequency,
2274 .vidioc_s_frequency = vidioc_s_frequency,
2275 #ifdef CONFIG_VIDEO_ADV_DEBUG
2276 .vidioc_g_register = vidioc_g_register,
2277 .vidioc_s_register = vidioc_s_register,
2278 #endif
2279 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2280 .vidiocgmbuf = vidiocgmbuf,
2281 #endif
2282 };
2283
2284 static struct video_device cx231xx_vbi_template;
2285
2286 static const struct video_device cx231xx_video_template = {
2287 .fops = &cx231xx_v4l_fops,
2288 .release = video_device_release,
2289 .ioctl_ops = &video_ioctl_ops,
2290 .minor = -1,
2291 .tvnorms = V4L2_STD_ALL,
2292 .current_norm = V4L2_STD_PAL,
2293 };
2294
2295 static const struct v4l2_file_operations radio_fops = {
2296 .owner = THIS_MODULE,
2297 .open = cx231xx_v4l2_open,
2298 .release = cx231xx_v4l2_close,
2299 .ioctl = video_ioctl2,
2300 };
2301
2302 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2303 .vidioc_querycap = radio_querycap,
2304 .vidioc_g_tuner = radio_g_tuner,
2305 .vidioc_enum_input = radio_enum_input,
2306 .vidioc_g_audio = radio_g_audio,
2307 .vidioc_s_tuner = radio_s_tuner,
2308 .vidioc_s_audio = radio_s_audio,
2309 .vidioc_s_input = radio_s_input,
2310 .vidioc_queryctrl = radio_queryctrl,
2311 .vidioc_g_ctrl = vidioc_g_ctrl,
2312 .vidioc_s_ctrl = vidioc_s_ctrl,
2313 .vidioc_g_frequency = vidioc_g_frequency,
2314 .vidioc_s_frequency = vidioc_s_frequency,
2315 #ifdef CONFIG_VIDEO_ADV_DEBUG
2316 .vidioc_g_register = vidioc_g_register,
2317 .vidioc_s_register = vidioc_s_register,
2318 #endif
2319 };
2320
2321 static struct video_device cx231xx_radio_template = {
2322 .name = "cx231xx-radio",
2323 .fops = &radio_fops,
2324 .ioctl_ops = &radio_ioctl_ops,
2325 .minor = -1,
2326 };
2327
2328 /******************************** usb interface ******************************/
2329
2330 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2331 const struct video_device
2332 *template, const char *type_name)
2333 {
2334 struct video_device *vfd;
2335
2336 vfd = video_device_alloc();
2337 if (NULL == vfd)
2338 return NULL;
2339
2340 *vfd = *template;
2341 vfd->minor = -1;
2342 vfd->v4l2_dev = &dev->v4l2_dev;
2343 vfd->release = video_device_release;
2344 vfd->debug = video_debug;
2345
2346 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2347
2348 return vfd;
2349 }
2350
2351 int cx231xx_register_analog_devices(struct cx231xx *dev)
2352 {
2353 int ret;
2354
2355 cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2356 dev->name,
2357 (CX231XX_VERSION_CODE >> 16) & 0xff,
2358 (CX231XX_VERSION_CODE >> 8) & 0xff,
2359 CX231XX_VERSION_CODE & 0xff);
2360
2361 /* set default norm */
2362 /*dev->norm = cx231xx_video_template.current_norm; */
2363 dev->width = norm_maxw(dev);
2364 dev->height = norm_maxh(dev);
2365 dev->interlaced = 0;
2366 dev->hscale = 0;
2367 dev->vscale = 0;
2368
2369 /* Analog specific initialization */
2370 dev->format = &format[0];
2371 /* video_mux(dev, dev->video_input); */
2372
2373 /* Audio defaults */
2374 dev->mute = 1;
2375 dev->volume = 0x1f;
2376
2377 /* enable vbi capturing */
2378 /* write code here... */
2379
2380 /* allocate and fill video video_device struct */
2381 dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2382 if (!dev->vdev) {
2383 cx231xx_errdev("cannot allocate video_device.\n");
2384 return -ENODEV;
2385 }
2386
2387 /* register v4l2 video video_device */
2388 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2389 video_nr[dev->devno]);
2390 if (ret) {
2391 cx231xx_errdev("unable to register video device (error=%i).\n",
2392 ret);
2393 return ret;
2394 }
2395
2396 cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2397 dev->name, dev->vdev->num);
2398
2399 /* Initialize VBI template */
2400 memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2401 sizeof(cx231xx_vbi_template));
2402 strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2403
2404 /* Allocate and fill vbi video_device struct */
2405 dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2406
2407 /* register v4l2 vbi video_device */
2408 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2409 vbi_nr[dev->devno]);
2410 if (ret < 0) {
2411 cx231xx_errdev("unable to register vbi device\n");
2412 return ret;
2413 }
2414
2415 cx231xx_info("%s/0: registered device vbi%d\n",
2416 dev->name, dev->vbi_dev->num);
2417
2418 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2419 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2420 "radio");
2421 if (!dev->radio_dev) {
2422 cx231xx_errdev("cannot allocate video_device.\n");
2423 return -ENODEV;
2424 }
2425 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2426 radio_nr[dev->devno]);
2427 if (ret < 0) {
2428 cx231xx_errdev("can't register radio device\n");
2429 return ret;
2430 }
2431 cx231xx_info("Registered radio device as /dev/radio%d\n",
2432 dev->radio_dev->num);
2433 }
2434
2435 cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2436 dev->vdev->num, dev->vbi_dev->num);
2437
2438 return 0;
2439 }
Linux kernel - Deliverables
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