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ARM: OMAP4: Fix NULL pointer dereference crash.
[linux-2.6.git] / drivers / media / video / cx231xx / cx231xx-video.c
blob609bae6098d395b6aaee1f81fe683ca3f2771512
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 dev->video_input = index;
824 dev->ctl_ainput = INPUT(index)->amux;
825
826 cx231xx_set_video_input_mux(dev, index);
827
828 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
829
830 cx231xx_set_audio_input(dev, dev->ctl_ainput);
831
832 cx231xx_info("video_mux : %d\n", index);
833
834 /* do mode control overrides if required */
835 cx231xx_do_mode_ctrl_overrides(dev);
836 }
837
838 /* Usage lock check functions */
839 static int res_get(struct cx231xx_fh *fh)
840 {
841 struct cx231xx *dev = fh->dev;
842 int rc = 0;
843
844 /* This instance already has stream_on */
845 if (fh->stream_on)
846 return rc;
847
848 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
849 if (dev->stream_on)
850 return -EBUSY;
851 dev->stream_on = 1;
852 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
853 if (dev->vbi_stream_on)
854 return -EBUSY;
855 dev->vbi_stream_on = 1;
856 } else
857 return -EINVAL;
858
859 fh->stream_on = 1;
860
861 return rc;
862 }
863
864 static int res_check(struct cx231xx_fh *fh)
865 {
866 return fh->stream_on;
867 }
868
869 static void res_free(struct cx231xx_fh *fh)
870 {
871 struct cx231xx *dev = fh->dev;
872
873 fh->stream_on = 0;
874
875 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
876 dev->stream_on = 0;
877 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
878 dev->vbi_stream_on = 0;
879 }
880
881 static int check_dev(struct cx231xx *dev)
882 {
883 if (dev->state & DEV_DISCONNECTED) {
884 cx231xx_errdev("v4l2 ioctl: device not present\n");
885 return -ENODEV;
886 }
887
888 if (dev->state & DEV_MISCONFIGURED) {
889 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
890 "close and open it again\n");
891 return -EIO;
892 }
893 return 0;
894 }
895
896 static void get_scale(struct cx231xx *dev,
897 unsigned int width, unsigned int height,
898 unsigned int *hscale, unsigned int *vscale)
899 {
900 unsigned int maxw = norm_maxw(dev);
901 unsigned int maxh = norm_maxh(dev);
902
903 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
904 if (*hscale >= 0x4000)
905 *hscale = 0x3fff;
906
907 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
908 if (*vscale >= 0x4000)
909 *vscale = 0x3fff;
910 }
911
912 /* ------------------------------------------------------------------
913 IOCTL vidioc handling
914 ------------------------------------------------------------------*/
915
916 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
917 struct v4l2_format *f)
918 {
919 struct cx231xx_fh *fh = priv;
920 struct cx231xx *dev = fh->dev;
921
922 mutex_lock(&dev->lock);
923
924 f->fmt.pix.width = dev->width;
925 f->fmt.pix.height = dev->height;
926 f->fmt.pix.pixelformat = dev->format->fourcc;;
927 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
928 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
929 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
930
931 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
932
933 mutex_unlock(&dev->lock);
934
935 return 0;
936 }
937
938 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
939 {
940 unsigned int i;
941
942 for (i = 0; i < ARRAY_SIZE(format); i++)
943 if (format[i].fourcc == fourcc)
944 return &format[i];
945
946 return NULL;
947 }
948
949 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
950 struct v4l2_format *f)
951 {
952 struct cx231xx_fh *fh = priv;
953 struct cx231xx *dev = fh->dev;
954 unsigned int width = f->fmt.pix.width;
955 unsigned int height = f->fmt.pix.height;
956 unsigned int maxw = norm_maxw(dev);
957 unsigned int maxh = norm_maxh(dev);
958 unsigned int hscale, vscale;
959 struct cx231xx_fmt *fmt;
960
961 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
962 if (!fmt) {
963 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
964 f->fmt.pix.pixelformat);
965 return -EINVAL;
966 }
967
968 /* width must even because of the YUYV format
969 height must be even because of interlacing */
970 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
971
972 get_scale(dev, width, height, &hscale, &vscale);
973
974 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
975 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
976
977 f->fmt.pix.width = width;
978 f->fmt.pix.height = height;
979 f->fmt.pix.pixelformat = fmt->fourcc;
980 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
981 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
982 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
983 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
984
985 return 0;
986 }
987
988 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
989 struct v4l2_format *f)
990 {
991 struct cx231xx_fh *fh = priv;
992 struct cx231xx *dev = fh->dev;
993 int rc;
994 struct cx231xx_fmt *fmt;
995
996 rc = check_dev(dev);
997 if (rc < 0)
998 return rc;
999
1000 mutex_lock(&dev->lock);
1001
1002 vidioc_try_fmt_vid_cap(file, priv, f);
1003
1004 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1005 if (!fmt) {
1006 rc = -EINVAL;
1007 goto out;
1008 }
1009
1010 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1011 cx231xx_errdev("%s queue busy\n", __func__);
1012 rc = -EBUSY;
1013 goto out;
1014 }
1015
1016 if (dev->stream_on && !fh->stream_on) {
1017 cx231xx_errdev("%s device in use by another fh\n", __func__);
1018 rc = -EBUSY;
1019 goto out;
1020 }
1021
1022 /* set new image size */
1023 dev->width = f->fmt.pix.width;
1024 dev->height = f->fmt.pix.height;
1025 dev->format = fmt;
1026 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1027
1028 call_all(dev, video, s_fmt, f);
1029
1030 /* Set the correct alternate setting for this resolution */
1031 cx231xx_resolution_set(dev);
1032
1033 out:
1034 mutex_unlock(&dev->lock);
1035 return rc;
1036 }
1037
1038 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1039 {
1040 struct cx231xx_fh *fh = priv;
1041 struct cx231xx *dev = fh->dev;
1042
1043 *id = dev->norm;
1044 return 0;
1045 }
1046
1047 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1048 {
1049 struct cx231xx_fh *fh = priv;
1050 struct cx231xx *dev = fh->dev;
1051 struct v4l2_format f;
1052 int rc;
1053
1054 rc = check_dev(dev);
1055 if (rc < 0)
1056 return rc;
1057
1058 cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1059
1060 mutex_lock(&dev->lock);
1061 dev->norm = *norm;
1062
1063 /* Adjusts width/height, if needed */
1064 f.fmt.pix.width = dev->width;
1065 f.fmt.pix.height = dev->height;
1066 vidioc_try_fmt_vid_cap(file, priv, &f);
1067
1068 /* set new image size */
1069 dev->width = f.fmt.pix.width;
1070 dev->height = f.fmt.pix.height;
1071 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1072
1073 call_all(dev, core, s_std, dev->norm);
1074
1075 mutex_unlock(&dev->lock);
1076
1077 cx231xx_resolution_set(dev);
1078
1079 /* do mode control overrides */
1080 cx231xx_do_mode_ctrl_overrides(dev);
1081
1082 return 0;
1083 }
1084
1085 static const char *iname[] = {
1086 [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1087 [CX231XX_VMUX_SVIDEO] = "S-Video",
1088 [CX231XX_VMUX_TELEVISION] = "Television",
1089 [CX231XX_VMUX_CABLE] = "Cable TV",
1090 [CX231XX_VMUX_DVB] = "DVB",
1091 [CX231XX_VMUX_DEBUG] = "for debug only",
1092 };
1093
1094 static int vidioc_enum_input(struct file *file, void *priv,
1095 struct v4l2_input *i)
1096 {
1097 struct cx231xx_fh *fh = priv;
1098 struct cx231xx *dev = fh->dev;
1099 unsigned int n;
1100
1101 n = i->index;
1102 if (n >= MAX_CX231XX_INPUT)
1103 return -EINVAL;
1104 if (0 == INPUT(n)->type)
1105 return -EINVAL;
1106
1107 i->index = n;
1108 i->type = V4L2_INPUT_TYPE_CAMERA;
1109
1110 strcpy(i->name, iname[INPUT(n)->type]);
1111
1112 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1113 (CX231XX_VMUX_CABLE == INPUT(n)->type))
1114 i->type = V4L2_INPUT_TYPE_TUNER;
1115
1116 i->std = dev->vdev->tvnorms;
1117
1118 return 0;
1119 }
1120
1121 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1122 {
1123 struct cx231xx_fh *fh = priv;
1124 struct cx231xx *dev = fh->dev;
1125
1126 *i = dev->video_input;
1127
1128 return 0;
1129 }
1130
1131 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1132 {
1133 struct cx231xx_fh *fh = priv;
1134 struct cx231xx *dev = fh->dev;
1135 int rc;
1136
1137 rc = check_dev(dev);
1138 if (rc < 0)
1139 return rc;
1140
1141 if (i >= MAX_CX231XX_INPUT)
1142 return -EINVAL;
1143 if (0 == INPUT(i)->type)
1144 return -EINVAL;
1145
1146 mutex_lock(&dev->lock);
1147
1148 video_mux(dev, i);
1149
1150 mutex_unlock(&dev->lock);
1151 return 0;
1152 }
1153
1154 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1155 {
1156 struct cx231xx_fh *fh = priv;
1157 struct cx231xx *dev = fh->dev;
1158
1159 switch (a->index) {
1160 case CX231XX_AMUX_VIDEO:
1161 strcpy(a->name, "Television");
1162 break;
1163 case CX231XX_AMUX_LINE_IN:
1164 strcpy(a->name, "Line In");
1165 break;
1166 default:
1167 return -EINVAL;
1168 }
1169
1170 a->index = dev->ctl_ainput;
1171 a->capability = V4L2_AUDCAP_STEREO;
1172
1173 return 0;
1174 }
1175
1176 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1177 {
1178 struct cx231xx_fh *fh = priv;
1179 struct cx231xx *dev = fh->dev;
1180 int status = 0;
1181
1182 /* Doesn't allow manual routing */
1183 if (a->index != dev->ctl_ainput)
1184 return -EINVAL;
1185
1186 dev->ctl_ainput = INPUT(a->index)->amux;
1187 status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1188
1189 return status;
1190 }
1191
1192 static int vidioc_queryctrl(struct file *file, void *priv,
1193 struct v4l2_queryctrl *qc)
1194 {
1195 struct cx231xx_fh *fh = priv;
1196 struct cx231xx *dev = fh->dev;
1197 int id = qc->id;
1198 int i;
1199 int rc;
1200
1201 rc = check_dev(dev);
1202 if (rc < 0)
1203 return rc;
1204
1205 qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1206 if (unlikely(qc->id == 0))
1207 return -EINVAL;
1208
1209 memset(qc, 0, sizeof(*qc));
1210
1211 qc->id = id;
1212
1213 if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1214 return -EINVAL;
1215
1216 for (i = 0; i < CX231XX_CTLS; i++)
1217 if (cx231xx_ctls[i].v.id == qc->id)
1218 break;
1219
1220 if (i == CX231XX_CTLS) {
1221 *qc = no_ctl;
1222 return 0;
1223 }
1224 *qc = cx231xx_ctls[i].v;
1225
1226 mutex_lock(&dev->lock);
1227 call_all(dev, core, queryctrl, qc);
1228 mutex_unlock(&dev->lock);
1229
1230 if (qc->type)
1231 return 0;
1232 else
1233 return -EINVAL;
1234 }
1235
1236 static int vidioc_g_ctrl(struct file *file, void *priv,
1237 struct v4l2_control *ctrl)
1238 {
1239 struct cx231xx_fh *fh = priv;
1240 struct cx231xx *dev = fh->dev;
1241 int rc;
1242
1243 rc = check_dev(dev);
1244 if (rc < 0)
1245 return rc;
1246
1247 mutex_lock(&dev->lock);
1248 call_all(dev, core, g_ctrl, ctrl);
1249 mutex_unlock(&dev->lock);
1250 return rc;
1251 }
1252
1253 static int vidioc_s_ctrl(struct file *file, void *priv,
1254 struct v4l2_control *ctrl)
1255 {
1256 struct cx231xx_fh *fh = priv;
1257 struct cx231xx *dev = fh->dev;
1258 int rc;
1259
1260 rc = check_dev(dev);
1261 if (rc < 0)
1262 return rc;
1263
1264 mutex_lock(&dev->lock);
1265 call_all(dev, core, s_ctrl, ctrl);
1266 mutex_unlock(&dev->lock);
1267 return rc;
1268 }
1269
1270 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1271 {
1272 struct cx231xx_fh *fh = priv;
1273 struct cx231xx *dev = fh->dev;
1274 int rc;
1275
1276 rc = check_dev(dev);
1277 if (rc < 0)
1278 return rc;
1279
1280 if (0 != t->index)
1281 return -EINVAL;
1282
1283 strcpy(t->name, "Tuner");
1284
1285 t->type = V4L2_TUNER_ANALOG_TV;
1286 t->capability = V4L2_TUNER_CAP_NORM;
1287 t->rangehigh = 0xffffffffUL;
1288 t->signal = 0xffff; /* LOCKED */
1289
1290 return 0;
1291 }
1292
1293 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1294 {
1295 struct cx231xx_fh *fh = priv;
1296 struct cx231xx *dev = fh->dev;
1297 int rc;
1298
1299 rc = check_dev(dev);
1300 if (rc < 0)
1301 return rc;
1302
1303 if (0 != t->index)
1304 return -EINVAL;
1305 #if 0
1306 mutex_lock(&dev->lock);
1307 call_all(dev, tuner, s_tuner, t);
1308 mutex_unlock(&dev->lock);
1309 #endif
1310 return 0;
1311 }
1312
1313 static int vidioc_g_frequency(struct file *file, void *priv,
1314 struct v4l2_frequency *f)
1315 {
1316 struct cx231xx_fh *fh = priv;
1317 struct cx231xx *dev = fh->dev;
1318
1319 mutex_lock(&dev->lock);
1320 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1321 f->frequency = dev->ctl_freq;
1322
1323 call_all(dev, tuner, g_frequency, f);
1324
1325 mutex_unlock(&dev->lock);
1326
1327 return 0;
1328 }
1329
1330 static int vidioc_s_frequency(struct file *file, void *priv,
1331 struct v4l2_frequency *f)
1332 {
1333 struct cx231xx_fh *fh = priv;
1334 struct cx231xx *dev = fh->dev;
1335 int rc;
1336
1337 rc = check_dev(dev);
1338 if (rc < 0)
1339 return rc;
1340
1341 if (0 != f->tuner)
1342 return -EINVAL;
1343
1344 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1345 return -EINVAL;
1346 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1347 return -EINVAL;
1348
1349 /* set pre channel change settings in DIF first */
1350 rc = cx231xx_tuner_pre_channel_change(dev);
1351
1352 mutex_lock(&dev->lock);
1353
1354 dev->ctl_freq = f->frequency;
1355
1356 if (dev->tuner_type == TUNER_XC5000) {
1357 if (dev->cx231xx_set_analog_freq != NULL)
1358 dev->cx231xx_set_analog_freq(dev, f->frequency);
1359 } else
1360 call_all(dev, tuner, s_frequency, f);
1361
1362 mutex_unlock(&dev->lock);
1363
1364 /* set post channel change settings in DIF first */
1365 rc = cx231xx_tuner_post_channel_change(dev);
1366
1367 cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1368
1369 return rc;
1370 }
1371
1372 #ifdef CONFIG_VIDEO_ADV_DEBUG
1373
1374 /*
1375 -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1376 chip=<chip>[,min=<addr>,max=<addr>]
1377 dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1378 -r, --set-register=type=<host/i2cdrv/i2caddr>,
1379 chip=<chip>,reg=<addr>,val=<val>
1380 set the register [VIDIOC_DBG_S_REGISTER]
1381
1382 if type == host, then <chip> is the hosts chip ID (default 0)
1383 if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1384 if type == i2caddr, then <chip> is the 7-bit I2C address
1385 */
1386
1387 static int vidioc_g_register(struct file *file, void *priv,
1388 struct v4l2_dbg_register *reg)
1389 {
1390 struct cx231xx_fh *fh = priv;
1391 struct cx231xx *dev = fh->dev;
1392 int ret = 0;
1393 u8 value[4] = { 0, 0, 0, 0 };
1394 u32 data = 0;
1395
1396 switch (reg->match.type) {
1397 case V4L2_CHIP_MATCH_HOST:
1398 switch (reg->match.addr) {
1399 case 0: /* Cx231xx - internal registers */
1400 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1401 (u16)reg->reg, value, 4);
1402 reg->val = value[0] | value[1] << 8 |
1403 value[2] << 16 | value[3] << 24;
1404 break;
1405 case 1: /* AFE - read byte */
1406 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1407 (u16)reg->reg, 2, &data, 1);
1408 reg->val = le32_to_cpu(data & 0xff);
1409 break;
1410 case 14: /* AFE - read dword */
1411 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1412 (u16)reg->reg, 2, &data, 4);
1413 reg->val = le32_to_cpu(data);
1414 break;
1415 case 2: /* Video Block - read byte */
1416 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1417 (u16)reg->reg, 2, &data, 1);
1418 reg->val = le32_to_cpu(data & 0xff);
1419 break;
1420 case 24: /* Video Block - read dword */
1421 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1422 (u16)reg->reg, 2, &data, 4);
1423 reg->val = le32_to_cpu(data);
1424 break;
1425 case 3: /* I2S block - read byte */
1426 ret = cx231xx_read_i2c_data(dev,
1427 I2S_BLK_DEVICE_ADDRESS,
1428 (u16)reg->reg, 1,
1429 &data, 1);
1430 reg->val = le32_to_cpu(data & 0xff);
1431 break;
1432 case 34: /* I2S Block - read dword */
1433 ret =
1434 cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1435 (u16)reg->reg, 1, &data, 4);
1436 reg->val = le32_to_cpu(data);
1437 break;
1438 }
1439 return ret < 0 ? ret : 0;
1440
1441 case V4L2_CHIP_MATCH_I2C_DRIVER:
1442 call_all(dev, core, g_register, reg);
1443 return 0;
1444 case V4L2_CHIP_MATCH_I2C_ADDR:
1445 /* Not supported yet */
1446 return -EINVAL;
1447 default:
1448 if (!v4l2_chip_match_host(&reg->match))
1449 return -EINVAL;
1450 }
1451
1452 mutex_lock(&dev->lock);
1453 call_all(dev, core, g_register, reg);
1454 mutex_unlock(&dev->lock);
1455
1456 return ret;
1457 }
1458
1459 static int vidioc_s_register(struct file *file, void *priv,
1460 struct v4l2_dbg_register *reg)
1461 {
1462 struct cx231xx_fh *fh = priv;
1463 struct cx231xx *dev = fh->dev;
1464 int ret = 0;
1465 __le64 buf;
1466 u32 value;
1467 u8 data[4] = { 0, 0, 0, 0 };
1468
1469 buf = cpu_to_le64(reg->val);
1470
1471 switch (reg->match.type) {
1472 case V4L2_CHIP_MATCH_HOST:
1473 {
1474 value = (u32) buf & 0xffffffff;
1475
1476 switch (reg->match.addr) {
1477 case 0: /* cx231xx internal registers */
1478 data[0] = (u8) value;
1479 data[1] = (u8) (value >> 8);
1480 data[2] = (u8) (value >> 16);
1481 data[3] = (u8) (value >> 24);
1482 ret = cx231xx_write_ctrl_reg(dev,
1483 VRT_SET_REGISTER,
1484 (u16)reg->reg, data,
1485 4);
1486 break;
1487 case 1: /* AFE - read byte */
1488 ret = cx231xx_write_i2c_data(dev,
1489 AFE_DEVICE_ADDRESS,
1490 (u16)reg->reg, 2,
1491 value, 1);
1492 break;
1493 case 14: /* AFE - read dword */
1494 ret = cx231xx_write_i2c_data(dev,
1495 AFE_DEVICE_ADDRESS,
1496 (u16)reg->reg, 2,
1497 value, 4);
1498 break;
1499 case 2: /* Video Block - read byte */
1500 ret =
1501 cx231xx_write_i2c_data(dev,
1502 VID_BLK_I2C_ADDRESS,
1503 (u16)reg->reg, 2,
1504 value, 1);
1505 break;
1506 case 24: /* Video Block - read dword */
1507 ret =
1508 cx231xx_write_i2c_data(dev,
1509 VID_BLK_I2C_ADDRESS,
1510 (u16)reg->reg, 2,
1511 value, 4);
1512 break;
1513 case 3: /* I2S block - read byte */
1514 ret =
1515 cx231xx_write_i2c_data(dev,
1516 I2S_BLK_DEVICE_ADDRESS,
1517 (u16)reg->reg, 1,
1518 value, 1);
1519 break;
1520 case 34: /* I2S block - read dword */
1521 ret =
1522 cx231xx_write_i2c_data(dev,
1523 I2S_BLK_DEVICE_ADDRESS,
1524 (u16)reg->reg, 1,
1525 value, 4);
1526 break;
1527 }
1528 }
1529 return ret < 0 ? ret : 0;
1530
1531 default:
1532 break;
1533 }
1534
1535 mutex_lock(&dev->lock);
1536 call_all(dev, core, s_register, reg);
1537 mutex_unlock(&dev->lock);
1538
1539 return ret;
1540 }
1541 #endif
1542
1543 static int vidioc_cropcap(struct file *file, void *priv,
1544 struct v4l2_cropcap *cc)
1545 {
1546 struct cx231xx_fh *fh = priv;
1547 struct cx231xx *dev = fh->dev;
1548
1549 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1550 return -EINVAL;
1551
1552 cc->bounds.left = 0;
1553 cc->bounds.top = 0;
1554 cc->bounds.width = dev->width;
1555 cc->bounds.height = dev->height;
1556 cc->defrect = cc->bounds;
1557 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1558 cc->pixelaspect.denominator = 59;
1559
1560 return 0;
1561 }
1562
1563 static int vidioc_streamon(struct file *file, void *priv,
1564 enum v4l2_buf_type type)
1565 {
1566 struct cx231xx_fh *fh = priv;
1567 struct cx231xx *dev = fh->dev;
1568 int rc;
1569
1570 rc = check_dev(dev);
1571 if (rc < 0)
1572 return rc;
1573
1574 mutex_lock(&dev->lock);
1575 rc = res_get(fh);
1576
1577 if (likely(rc >= 0))
1578 rc = videobuf_streamon(&fh->vb_vidq);
1579
1580 call_all(dev, video, s_stream, 1);
1581
1582 mutex_unlock(&dev->lock);
1583
1584 return rc;
1585 }
1586
1587 static int vidioc_streamoff(struct file *file, void *priv,
1588 enum v4l2_buf_type type)
1589 {
1590 struct cx231xx_fh *fh = priv;
1591 struct cx231xx *dev = fh->dev;
1592 int rc;
1593
1594 rc = check_dev(dev);
1595 if (rc < 0)
1596 return rc;
1597
1598 if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1599 (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1600 return -EINVAL;
1601 if (type != fh->type)
1602 return -EINVAL;
1603
1604 mutex_lock(&dev->lock);
1605
1606 cx25840_call(dev, video, s_stream, 0);
1607
1608 videobuf_streamoff(&fh->vb_vidq);
1609 res_free(fh);
1610
1611 mutex_unlock(&dev->lock);
1612
1613 return 0;
1614 }
1615
1616 static int vidioc_querycap(struct file *file, void *priv,
1617 struct v4l2_capability *cap)
1618 {
1619 struct cx231xx_fh *fh = priv;
1620 struct cx231xx *dev = fh->dev;
1621
1622 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1623 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1624 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1625
1626 cap->version = CX231XX_VERSION_CODE;
1627
1628 cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1629 #if 0
1630 V4L2_CAP_SLICED_VBI_CAPTURE |
1631 #endif
1632 V4L2_CAP_VIDEO_CAPTURE |
1633 V4L2_CAP_AUDIO |
1634 V4L2_CAP_READWRITE |
1635 V4L2_CAP_STREAMING;
1636
1637 if (dev->tuner_type != TUNER_ABSENT)
1638 cap->capabilities |= V4L2_CAP_TUNER;
1639
1640 return 0;
1641 }
1642
1643 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1644 struct v4l2_fmtdesc *f)
1645 {
1646 if (unlikely(f->index >= ARRAY_SIZE(format)))
1647 return -EINVAL;
1648
1649 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1650 f->pixelformat = format[f->index].fourcc;
1651
1652 return 0;
1653 }
1654
1655 /* Sliced VBI ioctls */
1656 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1657 struct v4l2_format *f)
1658 {
1659 struct cx231xx_fh *fh = priv;
1660 struct cx231xx *dev = fh->dev;
1661 int rc;
1662
1663 rc = check_dev(dev);
1664 if (rc < 0)
1665 return rc;
1666
1667 mutex_lock(&dev->lock);
1668
1669 f->fmt.sliced.service_set = 0;
1670
1671 call_all(dev, video, g_fmt, f);
1672
1673 if (f->fmt.sliced.service_set == 0)
1674 rc = -EINVAL;
1675
1676 mutex_unlock(&dev->lock);
1677 return rc;
1678 }
1679
1680 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1681 struct v4l2_format *f)
1682 {
1683 struct cx231xx_fh *fh = priv;
1684 struct cx231xx *dev = fh->dev;
1685 int rc;
1686
1687 rc = check_dev(dev);
1688 if (rc < 0)
1689 return rc;
1690
1691 mutex_lock(&dev->lock);
1692 call_all(dev, video, g_fmt, f);
1693 mutex_unlock(&dev->lock);
1694
1695 if (f->fmt.sliced.service_set == 0)
1696 return -EINVAL;
1697
1698 return 0;
1699 }
1700
1701 /* RAW VBI ioctls */
1702
1703 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1704 struct v4l2_format *f)
1705 {
1706 struct cx231xx_fh *fh = priv;
1707 struct cx231xx *dev = fh->dev;
1708
1709 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1710 35468950 : 28636363;
1711 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1712 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1713 f->fmt.vbi.offset = 64 * 4;
1714 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1715 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1716 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1717 PAL_VBI_LINES : NTSC_VBI_LINES;
1718 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1719 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1720 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1721
1722 return 0;
1723
1724 }
1725
1726 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1727 struct v4l2_format *f)
1728 {
1729 struct cx231xx_fh *fh = priv;
1730 struct cx231xx *dev = fh->dev;
1731
1732 if (dev->vbi_stream_on && !fh->stream_on) {
1733 cx231xx_errdev("%s device in use by another fh\n", __func__);
1734 return -EBUSY;
1735 }
1736
1737 f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1738 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1739 35468950 : 28636363;
1740 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1741 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1742 f->fmt.vbi.offset = 244;
1743 f->fmt.vbi.flags = 0;
1744 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1745 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1746 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1747 PAL_VBI_LINES : NTSC_VBI_LINES;
1748 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1749 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1750 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1751
1752 return 0;
1753
1754 }
1755
1756 static int vidioc_reqbufs(struct file *file, void *priv,
1757 struct v4l2_requestbuffers *rb)
1758 {
1759 struct cx231xx_fh *fh = priv;
1760 struct cx231xx *dev = fh->dev;
1761 int rc;
1762
1763 rc = check_dev(dev);
1764 if (rc < 0)
1765 return rc;
1766
1767 return videobuf_reqbufs(&fh->vb_vidq, rb);
1768 }
1769
1770 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1771 {
1772 struct cx231xx_fh *fh = priv;
1773 struct cx231xx *dev = fh->dev;
1774 int rc;
1775
1776 rc = check_dev(dev);
1777 if (rc < 0)
1778 return rc;
1779
1780 return videobuf_querybuf(&fh->vb_vidq, b);
1781 }
1782
1783 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1784 {
1785 struct cx231xx_fh *fh = priv;
1786 struct cx231xx *dev = fh->dev;
1787 int rc;
1788
1789 rc = check_dev(dev);
1790 if (rc < 0)
1791 return rc;
1792
1793 return videobuf_qbuf(&fh->vb_vidq, b);
1794 }
1795
1796 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1797 {
1798 struct cx231xx_fh *fh = priv;
1799 struct cx231xx *dev = fh->dev;
1800 int rc;
1801
1802 rc = check_dev(dev);
1803 if (rc < 0)
1804 return rc;
1805
1806 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1807 }
1808
1809 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1810 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1811 {
1812 struct cx231xx_fh *fh = priv;
1813
1814 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1815 }
1816 #endif
1817
1818 /* ----------------------------------------------------------- */
1819 /* RADIO ESPECIFIC IOCTLS */
1820 /* ----------------------------------------------------------- */
1821
1822 static int radio_querycap(struct file *file, void *priv,
1823 struct v4l2_capability *cap)
1824 {
1825 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1826
1827 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1828 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1829 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1830
1831 cap->version = CX231XX_VERSION_CODE;
1832 cap->capabilities = V4L2_CAP_TUNER;
1833 return 0;
1834 }
1835
1836 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1837 {
1838 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1839
1840 if (unlikely(t->index > 0))
1841 return -EINVAL;
1842
1843 strcpy(t->name, "Radio");
1844 t->type = V4L2_TUNER_RADIO;
1845
1846 mutex_lock(&dev->lock);
1847 call_all(dev, tuner, s_tuner, t);
1848 mutex_unlock(&dev->lock);
1849
1850 return 0;
1851 }
1852
1853 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1854 {
1855 if (i->index != 0)
1856 return -EINVAL;
1857 strcpy(i->name, "Radio");
1858 i->type = V4L2_INPUT_TYPE_TUNER;
1859
1860 return 0;
1861 }
1862
1863 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1864 {
1865 if (unlikely(a->index))
1866 return -EINVAL;
1867
1868 strcpy(a->name, "Radio");
1869 return 0;
1870 }
1871
1872 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1873 {
1874 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1875
1876 if (0 != t->index)
1877 return -EINVAL;
1878
1879 mutex_lock(&dev->lock);
1880 call_all(dev, tuner, s_tuner, t);
1881 mutex_unlock(&dev->lock);
1882
1883 return 0;
1884 }
1885
1886 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1887 {
1888 return 0;
1889 }
1890
1891 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1892 {
1893 return 0;
1894 }
1895
1896 static int radio_queryctrl(struct file *file, void *priv,
1897 struct v4l2_queryctrl *c)
1898 {
1899 int i;
1900
1901 if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1902 return -EINVAL;
1903 if (c->id == V4L2_CID_AUDIO_MUTE) {
1904 for (i = 0; i < CX231XX_CTLS; i++)
1905 if (cx231xx_ctls[i].v.id == c->id)
1906 break;
1907 *c = cx231xx_ctls[i].v;
1908 } else
1909 *c = no_ctl;
1910 return 0;
1911 }
1912
1913 /*
1914 * cx231xx_v4l2_open()
1915 * inits the device and starts isoc transfer
1916 */
1917 static int cx231xx_v4l2_open(struct file *filp)
1918 {
1919 int minor = video_devdata(filp)->minor;
1920 int errCode = 0, radio = 0;
1921 struct cx231xx *dev = NULL;
1922 struct cx231xx_fh *fh;
1923 enum v4l2_buf_type fh_type = 0;
1924
1925 dev = cx231xx_get_device(minor, &fh_type, &radio);
1926 if (NULL == dev)
1927 return -ENODEV;
1928
1929 mutex_lock(&dev->lock);
1930
1931 cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1932 minor, v4l2_type_names[fh_type], dev->users);
1933
1934 #if 0
1935 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1936 if (errCode < 0) {
1937 cx231xx_errdev
1938 ("Device locked on digital mode. Can't open analog\n");
1939 mutex_unlock(&dev->lock);
1940 return -EBUSY;
1941 }
1942 #endif
1943
1944 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1945 if (!fh) {
1946 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1947 mutex_unlock(&dev->lock);
1948 return -ENOMEM;
1949 }
1950 fh->dev = dev;
1951 fh->radio = radio;
1952 fh->type = fh_type;
1953 filp->private_data = fh;
1954
1955 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1956 dev->width = norm_maxw(dev);
1957 dev->height = norm_maxh(dev);
1958 dev->hscale = 0;
1959 dev->vscale = 0;
1960
1961 /* Power up in Analog TV mode */
1962 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1963
1964 #if 0
1965 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1966 #endif
1967 cx231xx_resolution_set(dev);
1968
1969 /* set video alternate setting */
1970 cx231xx_set_video_alternate(dev);
1971
1972 /* Needed, since GPIO might have disabled power of
1973 some i2c device */
1974 cx231xx_config_i2c(dev);
1975
1976 /* device needs to be initialized before isoc transfer */
1977 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1978 video_mux(dev, dev->video_input);
1979
1980 }
1981 if (fh->radio) {
1982 cx231xx_videodbg("video_open: setting radio device\n");
1983
1984 /* cx231xx_start_radio(dev); */
1985
1986 call_all(dev, tuner, s_radio);
1987 }
1988
1989 dev->users++;
1990
1991 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1992 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1993 NULL, &dev->video_mode.slock,
1994 fh->type, V4L2_FIELD_INTERLACED,
1995 sizeof(struct cx231xx_buffer), fh);
1996 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1997 /* Set the required alternate setting VBI interface works in
1998 Bulk mode only */
1999 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2000
2001 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2002 NULL, &dev->vbi_mode.slock,
2003 fh->type, V4L2_FIELD_SEQ_TB,
2004 sizeof(struct cx231xx_buffer), fh);
2005 }
2006
2007 mutex_unlock(&dev->lock);
2008
2009 return errCode;
2010 }
2011
2012 /*
2013 * cx231xx_realease_resources()
2014 * unregisters the v4l2,i2c and usb devices
2015 * called when the device gets disconected or at module unload
2016 */
2017 void cx231xx_release_analog_resources(struct cx231xx *dev)
2018 {
2019
2020 /*FIXME: I2C IR should be disconnected */
2021
2022 if (dev->radio_dev) {
2023 if (-1 != dev->radio_dev->minor)
2024 video_unregister_device(dev->radio_dev);
2025 else
2026 video_device_release(dev->radio_dev);
2027 dev->radio_dev = NULL;
2028 }
2029 if (dev->vbi_dev) {
2030 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2031 dev->vbi_dev->num);
2032 if (-1 != dev->vbi_dev->minor)
2033 video_unregister_device(dev->vbi_dev);
2034 else
2035 video_device_release(dev->vbi_dev);
2036 dev->vbi_dev = NULL;
2037 }
2038 if (dev->vdev) {
2039 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2040 dev->vdev->num);
2041 if (-1 != dev->vdev->minor)
2042 video_unregister_device(dev->vdev);
2043 else
2044 video_device_release(dev->vdev);
2045 dev->vdev = NULL;
2046 }
2047 }
2048
2049 /*
2050 * cx231xx_v4l2_close()
2051 * stops streaming and deallocates all resources allocated by the v4l2
2052 * calls and ioctls
2053 */
2054 static int cx231xx_v4l2_close(struct file *filp)
2055 {
2056 struct cx231xx_fh *fh = filp->private_data;
2057 struct cx231xx *dev = fh->dev;
2058
2059 cx231xx_videodbg("users=%d\n", dev->users);
2060
2061 mutex_lock(&dev->lock);
2062
2063 if (res_check(fh))
2064 res_free(fh);
2065
2066 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2067 videobuf_stop(&fh->vb_vidq);
2068 videobuf_mmap_free(&fh->vb_vidq);
2069
2070 /* the device is already disconnect,
2071 free the remaining resources */
2072 if (dev->state & DEV_DISCONNECTED) {
2073 cx231xx_release_resources(dev);
2074 mutex_unlock(&dev->lock);
2075 kfree(dev);
2076 return 0;
2077 }
2078
2079 /* do this before setting alternate! */
2080 cx231xx_uninit_vbi_isoc(dev);
2081
2082 /* set alternate 0 */
2083 if (!dev->vbi_or_sliced_cc_mode)
2084 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2085 else
2086 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2087
2088 kfree(fh);
2089 dev->users--;
2090 wake_up_interruptible_nr(&dev->open, 1);
2091 mutex_unlock(&dev->lock);
2092 return 0;
2093 }
2094
2095 if (dev->users == 1) {
2096 videobuf_stop(&fh->vb_vidq);
2097 videobuf_mmap_free(&fh->vb_vidq);
2098
2099 /* the device is already disconnect,
2100 free the remaining resources */
2101 if (dev->state & DEV_DISCONNECTED) {
2102 cx231xx_release_resources(dev);
2103 mutex_unlock(&dev->lock);
2104 kfree(dev);
2105 return 0;
2106 }
2107
2108 /* Save some power by putting tuner to sleep */
2109 call_all(dev, tuner, s_standby);
2110
2111 /* do this before setting alternate! */
2112 cx231xx_uninit_isoc(dev);
2113 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2114
2115 /* set alternate 0 */
2116 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2117 }
2118 kfree(fh);
2119 dev->users--;
2120 wake_up_interruptible_nr(&dev->open, 1);
2121 mutex_unlock(&dev->lock);
2122 return 0;
2123 }
2124
2125 /*
2126 * cx231xx_v4l2_read()
2127 * will allocate buffers when called for the first time
2128 */
2129 static ssize_t
2130 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2131 loff_t *pos)
2132 {
2133 struct cx231xx_fh *fh = filp->private_data;
2134 struct cx231xx *dev = fh->dev;
2135 int rc;
2136
2137 rc = check_dev(dev);
2138 if (rc < 0)
2139 return rc;
2140
2141 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2142 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2143 mutex_lock(&dev->lock);
2144 rc = res_get(fh);
2145 mutex_unlock(&dev->lock);
2146
2147 if (unlikely(rc < 0))
2148 return rc;
2149
2150 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2151 filp->f_flags & O_NONBLOCK);
2152 }
2153 return 0;
2154 }
2155
2156 /*
2157 * cx231xx_v4l2_poll()
2158 * will allocate buffers when called for the first time
2159 */
2160 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2161 {
2162 struct cx231xx_fh *fh = filp->private_data;
2163 struct cx231xx *dev = fh->dev;
2164 int rc;
2165
2166 rc = check_dev(dev);
2167 if (rc < 0)
2168 return rc;
2169
2170 mutex_lock(&dev->lock);
2171 rc = res_get(fh);
2172 mutex_unlock(&dev->lock);
2173
2174 if (unlikely(rc < 0))
2175 return POLLERR;
2176
2177 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2178 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2179 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2180 else
2181 return POLLERR;
2182 }
2183
2184 /*
2185 * cx231xx_v4l2_mmap()
2186 */
2187 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2188 {
2189 struct cx231xx_fh *fh = filp->private_data;
2190 struct cx231xx *dev = fh->dev;
2191 int rc;
2192
2193 rc = check_dev(dev);
2194 if (rc < 0)
2195 return rc;
2196
2197 mutex_lock(&dev->lock);
2198 rc = res_get(fh);
2199 mutex_unlock(&dev->lock);
2200
2201 if (unlikely(rc < 0))
2202 return rc;
2203
2204 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2205
2206 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2207 (unsigned long)vma->vm_start,
2208 (unsigned long)vma->vm_end -
2209 (unsigned long)vma->vm_start, rc);
2210
2211 return rc;
2212 }
2213
2214 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2215 .owner = THIS_MODULE,
2216 .open = cx231xx_v4l2_open,
2217 .release = cx231xx_v4l2_close,
2218 .read = cx231xx_v4l2_read,
2219 .poll = cx231xx_v4l2_poll,
2220 .mmap = cx231xx_v4l2_mmap,
2221 .ioctl = video_ioctl2,
2222 };
2223
2224 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2225 .vidioc_querycap = vidioc_querycap,
2226 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2227 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2228 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2229 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2230 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2231 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2232 .vidioc_s_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2233 .vidioc_g_audio = vidioc_g_audio,
2234 .vidioc_s_audio = vidioc_s_audio,
2235 .vidioc_cropcap = vidioc_cropcap,
2236 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2237 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2238 .vidioc_reqbufs = vidioc_reqbufs,
2239 .vidioc_querybuf = vidioc_querybuf,
2240 .vidioc_qbuf = vidioc_qbuf,
2241 .vidioc_dqbuf = vidioc_dqbuf,
2242 .vidioc_s_std = vidioc_s_std,
2243 .vidioc_g_std = vidioc_g_std,
2244 .vidioc_enum_input = vidioc_enum_input,
2245 .vidioc_g_input = vidioc_g_input,
2246 .vidioc_s_input = vidioc_s_input,
2247 .vidioc_queryctrl = vidioc_queryctrl,
2248 .vidioc_g_ctrl = vidioc_g_ctrl,
2249 .vidioc_s_ctrl = vidioc_s_ctrl,
2250 .vidioc_streamon = vidioc_streamon,
2251 .vidioc_streamoff = vidioc_streamoff,
2252 .vidioc_g_tuner = vidioc_g_tuner,
2253 .vidioc_s_tuner = vidioc_s_tuner,
2254 .vidioc_g_frequency = vidioc_g_frequency,
2255 .vidioc_s_frequency = vidioc_s_frequency,
2256 #ifdef CONFIG_VIDEO_ADV_DEBUG
2257 .vidioc_g_register = vidioc_g_register,
2258 .vidioc_s_register = vidioc_s_register,
2259 #endif
2260 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2261 .vidiocgmbuf = vidiocgmbuf,
2262 #endif
2263 };
2264
2265 static struct video_device cx231xx_vbi_template;
2266
2267 static const struct video_device cx231xx_video_template = {
2268 .fops = &cx231xx_v4l_fops,
2269 .release = video_device_release,
2270 .ioctl_ops = &video_ioctl_ops,
2271 .minor = -1,
2272 .tvnorms = V4L2_STD_ALL,
2273 .current_norm = V4L2_STD_PAL,
2274 };
2275
2276 static const struct v4l2_file_operations radio_fops = {
2277 .owner = THIS_MODULE,
2278 .open = cx231xx_v4l2_open,
2279 .release = cx231xx_v4l2_close,
2280 .ioctl = video_ioctl2,
2281 };
2282
2283 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2284 .vidioc_querycap = radio_querycap,
2285 .vidioc_g_tuner = radio_g_tuner,
2286 .vidioc_enum_input = radio_enum_input,
2287 .vidioc_g_audio = radio_g_audio,
2288 .vidioc_s_tuner = radio_s_tuner,
2289 .vidioc_s_audio = radio_s_audio,
2290 .vidioc_s_input = radio_s_input,
2291 .vidioc_queryctrl = radio_queryctrl,
2292 .vidioc_g_ctrl = vidioc_g_ctrl,
2293 .vidioc_s_ctrl = vidioc_s_ctrl,
2294 .vidioc_g_frequency = vidioc_g_frequency,
2295 .vidioc_s_frequency = vidioc_s_frequency,
2296 #ifdef CONFIG_VIDEO_ADV_DEBUG
2297 .vidioc_g_register = vidioc_g_register,
2298 .vidioc_s_register = vidioc_s_register,
2299 #endif
2300 };
2301
2302 static struct video_device cx231xx_radio_template = {
2303 .name = "cx231xx-radio",
2304 .fops = &radio_fops,
2305 .ioctl_ops = &radio_ioctl_ops,
2306 .minor = -1,
2307 };
2308
2309 /******************************** usb interface ******************************/
2310
2311 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2312 const struct video_device
2313 *template, const char *type_name)
2314 {
2315 struct video_device *vfd;
2316
2317 vfd = video_device_alloc();
2318 if (NULL == vfd)
2319 return NULL;
2320
2321 *vfd = *template;
2322 vfd->minor = -1;
2323 vfd->v4l2_dev = &dev->v4l2_dev;
2324 vfd->release = video_device_release;
2325 vfd->debug = video_debug;
2326
2327 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2328
2329 return vfd;
2330 }
2331
2332 int cx231xx_register_analog_devices(struct cx231xx *dev)
2333 {
2334 int ret;
2335
2336 cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2337 dev->name,
2338 (CX231XX_VERSION_CODE >> 16) & 0xff,
2339 (CX231XX_VERSION_CODE >> 8) & 0xff,
2340 CX231XX_VERSION_CODE & 0xff);
2341
2342 /* set default norm */
2343 /*dev->norm = cx231xx_video_template.current_norm; */
2344 dev->width = norm_maxw(dev);
2345 dev->height = norm_maxh(dev);
2346 dev->interlaced = 0;
2347 dev->hscale = 0;
2348 dev->vscale = 0;
2349
2350 /* Analog specific initialization */
2351 dev->format = &format[0];
2352 /* video_mux(dev, dev->video_input); */
2353
2354 /* Audio defaults */
2355 dev->mute = 1;
2356 dev->volume = 0x1f;
2357
2358 /* enable vbi capturing */
2359 /* write code here... */
2360
2361 /* allocate and fill video video_device struct */
2362 dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2363 if (!dev->vdev) {
2364 cx231xx_errdev("cannot allocate video_device.\n");
2365 return -ENODEV;
2366 }
2367
2368 /* register v4l2 video video_device */
2369 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2370 video_nr[dev->devno]);
2371 if (ret) {
2372 cx231xx_errdev("unable to register video device (error=%i).\n",
2373 ret);
2374 return ret;
2375 }
2376
2377 cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2378 dev->name, dev->vdev->num);
2379
2380 /* Initialize VBI template */
2381 memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2382 sizeof(cx231xx_vbi_template));
2383 strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2384
2385 /* Allocate and fill vbi video_device struct */
2386 dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2387
2388 /* register v4l2 vbi video_device */
2389 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2390 vbi_nr[dev->devno]);
2391 if (ret < 0) {
2392 cx231xx_errdev("unable to register vbi device\n");
2393 return ret;
2394 }
2395
2396 cx231xx_info("%s/0: registered device vbi%d\n",
2397 dev->name, dev->vbi_dev->num);
2398
2399 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2400 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2401 "radio");
2402 if (!dev->radio_dev) {
2403 cx231xx_errdev("cannot allocate video_device.\n");
2404 return -ENODEV;
2405 }
2406 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2407 radio_nr[dev->devno]);
2408 if (ret < 0) {
2409 cx231xx_errdev("can't register radio device\n");
2410 return ret;
2411 }
2412 cx231xx_info("Registered radio device as /dev/radio%d\n",
2413 dev->radio_dev->num);
2414 }
2415
2416 cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2417 dev->vdev->num, dev->vbi_dev->num);
2418
2419 return 0;
2420 }
Linus' kernel tree