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[people/arne_f/kernel.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 #include <linux/slab.h>
36
37 #include <media/v4l2-common.h>
38 #include <media/v4l2-ioctl.h>
39 #include <media/v4l2-chip-ident.h>
40 #include <media/msp3400.h>
41 #include <media/tuner.h>
42
43 #include "dvb_frontend.h"
44
45 #include "cx231xx.h"
46 #include "cx231xx-vbi.h"
47
48 #define CX231XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
49
50 #define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
51 #define DRIVER_DESC "Conexant cx231xx based USB video device driver"
52
53 #define cx231xx_videodbg(fmt, arg...) do {\
54 if (video_debug) \
55 printk(KERN_INFO "%s %s :"fmt, \
56 dev->name, __func__ , ##arg); } while (0)
57
58 static unsigned int isoc_debug;
59 module_param(isoc_debug, int, 0644);
60 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
61
62 #define cx231xx_isocdbg(fmt, arg...) \
63 do {\
64 if (isoc_debug) { \
65 printk(KERN_INFO "%s %s :"fmt, \
66 dev->name, __func__ , ##arg); \
67 } \
68 } while (0)
69
70 MODULE_AUTHOR(DRIVER_AUTHOR);
71 MODULE_DESCRIPTION(DRIVER_DESC);
72 MODULE_LICENSE("GPL");
73
74 static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
75 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
76 static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
77 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
78
79 module_param_array(card, int, NULL, 0444);
80 module_param_array(video_nr, int, NULL, 0444);
81 module_param_array(vbi_nr, int, NULL, 0444);
82 module_param_array(radio_nr, int, NULL, 0444);
83
84 MODULE_PARM_DESC(card, "card type");
85 MODULE_PARM_DESC(video_nr, "video device numbers");
86 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
87 MODULE_PARM_DESC(radio_nr, "radio device numbers");
88
89 static unsigned int video_debug;
90 module_param(video_debug, int, 0644);
91 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
92
93 /* supported video standards */
94 static struct cx231xx_fmt format[] = {
95 {
96 .name = "16bpp YUY2, 4:2:2, packed",
97 .fourcc = V4L2_PIX_FMT_YUYV,
98 .depth = 16,
99 .reg = 0,
100 },
101 };
102
103 /* supported controls */
104 /* Common to all boards */
105
106 /* ------------------------------------------------------------------- */
107
108 static const struct v4l2_queryctrl no_ctl = {
109 .name = "42",
110 .flags = V4L2_CTRL_FLAG_DISABLED,
111 };
112
113 static struct cx231xx_ctrl cx231xx_ctls[] = {
114 /* --- video --- */
115 {
116 .v = {
117 .id = V4L2_CID_BRIGHTNESS,
118 .name = "Brightness",
119 .minimum = 0x00,
120 .maximum = 0xff,
121 .step = 1,
122 .default_value = 0x7f,
123 .type = V4L2_CTRL_TYPE_INTEGER,
124 },
125 .off = 128,
126 .reg = LUMA_CTRL,
127 .mask = 0x00ff,
128 .shift = 0,
129 }, {
130 .v = {
131 .id = V4L2_CID_CONTRAST,
132 .name = "Contrast",
133 .minimum = 0,
134 .maximum = 0xff,
135 .step = 1,
136 .default_value = 0x3f,
137 .type = V4L2_CTRL_TYPE_INTEGER,
138 },
139 .off = 0,
140 .reg = LUMA_CTRL,
141 .mask = 0xff00,
142 .shift = 8,
143 }, {
144 .v = {
145 .id = V4L2_CID_HUE,
146 .name = "Hue",
147 .minimum = 0,
148 .maximum = 0xff,
149 .step = 1,
150 .default_value = 0x7f,
151 .type = V4L2_CTRL_TYPE_INTEGER,
152 },
153 .off = 128,
154 .reg = CHROMA_CTRL,
155 .mask = 0xff0000,
156 .shift = 16,
157 }, {
158 /* strictly, this only describes only U saturation.
159 * V saturation is handled specially through code.
160 */
161 .v = {
162 .id = V4L2_CID_SATURATION,
163 .name = "Saturation",
164 .minimum = 0,
165 .maximum = 0xff,
166 .step = 1,
167 .default_value = 0x7f,
168 .type = V4L2_CTRL_TYPE_INTEGER,
169 },
170 .off = 0,
171 .reg = CHROMA_CTRL,
172 .mask = 0x00ff,
173 .shift = 0,
174 }, {
175 /* --- audio --- */
176 .v = {
177 .id = V4L2_CID_AUDIO_MUTE,
178 .name = "Mute",
179 .minimum = 0,
180 .maximum = 1,
181 .default_value = 1,
182 .type = V4L2_CTRL_TYPE_BOOLEAN,
183 },
184 .reg = PATH1_CTL1,
185 .mask = (0x1f << 24),
186 .shift = 24,
187 }, {
188 .v = {
189 .id = V4L2_CID_AUDIO_VOLUME,
190 .name = "Volume",
191 .minimum = 0,
192 .maximum = 0x3f,
193 .step = 1,
194 .default_value = 0x3f,
195 .type = V4L2_CTRL_TYPE_INTEGER,
196 },
197 .reg = PATH1_VOL_CTL,
198 .mask = 0xff,
199 .shift = 0,
200 }
201 };
202 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
203
204 static const u32 cx231xx_user_ctrls[] = {
205 V4L2_CID_USER_CLASS,
206 V4L2_CID_BRIGHTNESS,
207 V4L2_CID_CONTRAST,
208 V4L2_CID_SATURATION,
209 V4L2_CID_HUE,
210 V4L2_CID_AUDIO_VOLUME,
211 #if 0
212 V4L2_CID_AUDIO_BALANCE,
213 #endif
214 V4L2_CID_AUDIO_MUTE,
215 0
216 };
217
218 static const u32 *ctrl_classes[] = {
219 cx231xx_user_ctrls,
220 NULL
221 };
222
223 /* ------------------------------------------------------------------
224 Video buffer and parser functions
225 ------------------------------------------------------------------*/
226
227 /*
228 * Announces that a buffer were filled and request the next
229 */
230 static inline void buffer_filled(struct cx231xx *dev,
231 struct cx231xx_dmaqueue *dma_q,
232 struct cx231xx_buffer *buf)
233 {
234 /* Advice that buffer was filled */
235 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
236 buf->vb.state = VIDEOBUF_DONE;
237 buf->vb.field_count++;
238 do_gettimeofday(&buf->vb.ts);
239
240 dev->video_mode.isoc_ctl.buf = NULL;
241
242 list_del(&buf->vb.queue);
243 wake_up(&buf->vb.done);
244 }
245
246 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
247 {
248 char *errmsg = "Unknown";
249
250 switch (status) {
251 case -ENOENT:
252 errmsg = "unlinked synchronuously";
253 break;
254 case -ECONNRESET:
255 errmsg = "unlinked asynchronuously";
256 break;
257 case -ENOSR:
258 errmsg = "Buffer error (overrun)";
259 break;
260 case -EPIPE:
261 errmsg = "Stalled (device not responding)";
262 break;
263 case -EOVERFLOW:
264 errmsg = "Babble (bad cable?)";
265 break;
266 case -EPROTO:
267 errmsg = "Bit-stuff error (bad cable?)";
268 break;
269 case -EILSEQ:
270 errmsg = "CRC/Timeout (could be anything)";
271 break;
272 case -ETIME:
273 errmsg = "Device does not respond";
274 break;
275 }
276 if (packet < 0) {
277 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
278 } else {
279 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
280 packet, status, errmsg);
281 }
282 }
283
284 /*
285 * video-buf generic routine to get the next available buffer
286 */
287 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
288 struct cx231xx_buffer **buf)
289 {
290 struct cx231xx_video_mode *vmode =
291 container_of(dma_q, struct cx231xx_video_mode, vidq);
292 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
293
294 char *outp;
295
296 if (list_empty(&dma_q->active)) {
297 cx231xx_isocdbg("No active queue to serve\n");
298 dev->video_mode.isoc_ctl.buf = NULL;
299 *buf = NULL;
300 return;
301 }
302
303 /* Get the next buffer */
304 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
305
306 /* Cleans up buffer - Usefull for testing for frame/URB loss */
307 outp = videobuf_to_vmalloc(&(*buf)->vb);
308 memset(outp, 0, (*buf)->vb.size);
309
310 dev->video_mode.isoc_ctl.buf = *buf;
311
312 return;
313 }
314
315 /*
316 * Controls the isoc copy of each urb packet
317 */
318 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
319 {
320 struct cx231xx_buffer *buf;
321 struct cx231xx_dmaqueue *dma_q = urb->context;
322 unsigned char *outp = NULL;
323 int i, rc = 1;
324 unsigned char *p_buffer;
325 u32 bytes_parsed = 0, buffer_size = 0;
326 u8 sav_eav = 0;
327
328 if (!dev)
329 return 0;
330
331 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
332 return 0;
333
334 if (urb->status < 0) {
335 print_err_status(dev, -1, urb->status);
336 if (urb->status == -ENOENT)
337 return 0;
338 }
339
340 buf = dev->video_mode.isoc_ctl.buf;
341 if (buf != NULL)
342 outp = videobuf_to_vmalloc(&buf->vb);
343
344 for (i = 0; i < urb->number_of_packets; i++) {
345 int status = urb->iso_frame_desc[i].status;
346
347 if (status < 0) {
348 print_err_status(dev, i, status);
349 if (urb->iso_frame_desc[i].status != -EPROTO)
350 continue;
351 }
352
353 if (urb->iso_frame_desc[i].actual_length <= 0) {
354 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
355 continue;
356 }
357 if (urb->iso_frame_desc[i].actual_length >
358 dev->video_mode.max_pkt_size) {
359 cx231xx_isocdbg("packet bigger than packet size");
360 continue;
361 }
362
363 /* get buffer pointer and length */
364 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
365 buffer_size = urb->iso_frame_desc[i].actual_length;
366 bytes_parsed = 0;
367
368 if (dma_q->is_partial_line) {
369 /* Handle the case of a partial line */
370 sav_eav = dma_q->last_sav;
371 } else {
372 /* Check for a SAV/EAV overlapping
373 the buffer boundary */
374 sav_eav =
375 cx231xx_find_boundary_SAV_EAV(p_buffer,
376 dma_q->partial_buf,
377 &bytes_parsed);
378 }
379
380 sav_eav &= 0xF0;
381 /* Get the first line if we have some portion of an SAV/EAV from
382 the last buffer or a partial line */
383 if (sav_eav) {
384 bytes_parsed += cx231xx_get_video_line(dev, dma_q,
385 sav_eav, /* SAV/EAV */
386 p_buffer + bytes_parsed, /* p_buffer */
387 buffer_size - bytes_parsed);/* buf size */
388 }
389
390 /* Now parse data that is completely in this buffer */
391 /* dma_q->is_partial_line = 0; */
392
393 while (bytes_parsed < buffer_size) {
394 u32 bytes_used = 0;
395
396 sav_eav = cx231xx_find_next_SAV_EAV(
397 p_buffer + bytes_parsed, /* p_buffer */
398 buffer_size - bytes_parsed, /* buf size */
399 &bytes_used);/* bytes used to get SAV/EAV */
400
401 bytes_parsed += bytes_used;
402
403 sav_eav &= 0xF0;
404 if (sav_eav && (bytes_parsed < buffer_size)) {
405 bytes_parsed += cx231xx_get_video_line(dev,
406 dma_q, sav_eav, /* SAV/EAV */
407 p_buffer + bytes_parsed,/* p_buffer */
408 buffer_size - bytes_parsed);/*buf size*/
409 }
410 }
411
412 /* Save the last four bytes of the buffer so we can check the
413 buffer boundary condition next time */
414 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
415 bytes_parsed = 0;
416
417 }
418 return rc;
419 }
420
421 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
422 u32 *p_bytes_used)
423 {
424 u32 bytes_used;
425 u8 boundary_bytes[8];
426 u8 sav_eav = 0;
427
428 *p_bytes_used = 0;
429
430 /* Create an array of the last 4 bytes of the last buffer and the first
431 4 bytes of the current buffer. */
432
433 memcpy(boundary_bytes, partial_buf, 4);
434 memcpy(boundary_bytes + 4, p_buffer, 4);
435
436 /* Check for the SAV/EAV in the boundary buffer */
437 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
438 &bytes_used);
439
440 if (sav_eav) {
441 /* found a boundary SAV/EAV. Updates the bytes used to reflect
442 only those used in the new buffer */
443 *p_bytes_used = bytes_used - 4;
444 }
445
446 return sav_eav;
447 }
448
449 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
450 {
451 u32 i;
452 u8 sav_eav = 0;
453
454 /*
455 * Don't search if the buffer size is less than 4. It causes a page
456 * fault since buffer_size - 4 evaluates to a large number in that
457 * case.
458 */
459 if (buffer_size < 4) {
460 *p_bytes_used = buffer_size;
461 return 0;
462 }
463
464 for (i = 0; i < (buffer_size - 3); i++) {
465
466 if ((p_buffer[i] == 0xFF) &&
467 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
468
469 *p_bytes_used = i + 4;
470 sav_eav = p_buffer[i + 3];
471 return sav_eav;
472 }
473 }
474
475 *p_bytes_used = buffer_size;
476 return 0;
477 }
478
479 u32 cx231xx_get_video_line(struct cx231xx *dev,
480 struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
481 u8 *p_buffer, u32 buffer_size)
482 {
483 u32 bytes_copied = 0;
484 int current_field = -1;
485
486 switch (sav_eav) {
487 case SAV_ACTIVE_VIDEO_FIELD1:
488 /* looking for skipped line which occurred in PAL 720x480 mode.
489 In this case, there will be no active data contained
490 between the SAV and EAV */
491 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
492 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
493 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
494 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
495 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
496 (p_buffer[3] == EAV_VBLANK_FIELD2)))
497 return bytes_copied;
498 current_field = 1;
499 break;
500
501 case SAV_ACTIVE_VIDEO_FIELD2:
502 /* looking for skipped line which occurred in PAL 720x480 mode.
503 In this case, there will be no active data contained between
504 the SAV and EAV */
505 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
506 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
507 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
508 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
509 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
510 (p_buffer[3] == EAV_VBLANK_FIELD2)))
511 return bytes_copied;
512 current_field = 2;
513 break;
514 }
515
516 dma_q->last_sav = sav_eav;
517
518 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
519 buffer_size, current_field);
520
521 return bytes_copied;
522 }
523
524 u32 cx231xx_copy_video_line(struct cx231xx *dev,
525 struct cx231xx_dmaqueue *dma_q, u8 *p_line,
526 u32 length, int field_number)
527 {
528 u32 bytes_to_copy;
529 struct cx231xx_buffer *buf;
530 u32 _line_size = dev->width * 2;
531
532 if (dma_q->current_field != field_number)
533 cx231xx_reset_video_buffer(dev, dma_q);
534
535 /* get the buffer pointer */
536 buf = dev->video_mode.isoc_ctl.buf;
537
538 /* Remember the field number for next time */
539 dma_q->current_field = field_number;
540
541 bytes_to_copy = dma_q->bytes_left_in_line;
542 if (bytes_to_copy > length)
543 bytes_to_copy = length;
544
545 if (dma_q->lines_completed >= dma_q->lines_per_field) {
546 dma_q->bytes_left_in_line -= bytes_to_copy;
547 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
548 0 : 1;
549 return 0;
550 }
551
552 dma_q->is_partial_line = 1;
553
554 /* If we don't have a buffer, just return the number of bytes we would
555 have copied if we had a buffer. */
556 if (!buf) {
557 dma_q->bytes_left_in_line -= bytes_to_copy;
558 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
559 ? 0 : 1;
560 return bytes_to_copy;
561 }
562
563 /* copy the data to video buffer */
564 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
565
566 dma_q->pos += bytes_to_copy;
567 dma_q->bytes_left_in_line -= bytes_to_copy;
568
569 if (dma_q->bytes_left_in_line == 0) {
570 dma_q->bytes_left_in_line = _line_size;
571 dma_q->lines_completed++;
572 dma_q->is_partial_line = 0;
573
574 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
575 buffer_filled(dev, dma_q, buf);
576
577 dma_q->pos = 0;
578 buf = NULL;
579 dma_q->lines_completed = 0;
580 }
581 }
582
583 return bytes_to_copy;
584 }
585
586 void cx231xx_reset_video_buffer(struct cx231xx *dev,
587 struct cx231xx_dmaqueue *dma_q)
588 {
589 struct cx231xx_buffer *buf;
590
591 /* handle the switch from field 1 to field 2 */
592 if (dma_q->current_field == 1) {
593 if (dma_q->lines_completed >= dma_q->lines_per_field)
594 dma_q->field1_done = 1;
595 else
596 dma_q->field1_done = 0;
597 }
598
599 buf = dev->video_mode.isoc_ctl.buf;
600
601 if (buf == NULL) {
602 u8 *outp = NULL;
603 /* first try to get the buffer */
604 get_next_buf(dma_q, &buf);
605
606 if (buf)
607 outp = videobuf_to_vmalloc(&buf->vb);
608
609 dma_q->pos = 0;
610 dma_q->field1_done = 0;
611 dma_q->current_field = -1;
612 }
613
614 /* reset the counters */
615 dma_q->bytes_left_in_line = dev->width << 1;
616 dma_q->lines_completed = 0;
617 }
618
619 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
620 u8 *p_buffer, u32 bytes_to_copy)
621 {
622 u8 *p_out_buffer = NULL;
623 u32 current_line_bytes_copied = 0;
624 struct cx231xx_buffer *buf;
625 u32 _line_size = dev->width << 1;
626 void *startwrite;
627 int offset, lencopy;
628
629 buf = dev->video_mode.isoc_ctl.buf;
630
631 if (buf == NULL)
632 return -1;
633
634 p_out_buffer = videobuf_to_vmalloc(&buf->vb);
635
636 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
637
638 /* Offset field 2 one line from the top of the buffer */
639 offset = (dma_q->current_field == 1) ? 0 : _line_size;
640
641 /* Offset for field 2 */
642 startwrite = p_out_buffer + offset;
643
644 /* lines already completed in the current field */
645 startwrite += (dma_q->lines_completed * _line_size * 2);
646
647 /* bytes already completed in the current line */
648 startwrite += current_line_bytes_copied;
649
650 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
651 bytes_to_copy : dma_q->bytes_left_in_line;
652
653 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
654 return 0;
655
656 /* The below copies the UYVY data straight into video buffer */
657 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
658
659 return 0;
660 }
661
662 void cx231xx_swab(u16 *from, u16 *to, u16 len)
663 {
664 u16 i;
665
666 if (len <= 0)
667 return;
668
669 for (i = 0; i < len / 2; i++)
670 to[i] = (from[i] << 8) | (from[i] >> 8);
671 }
672
673 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
674 {
675 u8 buffer_complete = 0;
676
677 /* Dual field stream */
678 buffer_complete = ((dma_q->current_field == 2) &&
679 (dma_q->lines_completed >= dma_q->lines_per_field) &&
680 dma_q->field1_done);
681
682 return buffer_complete;
683 }
684
685 /* ------------------------------------------------------------------
686 Videobuf operations
687 ------------------------------------------------------------------*/
688
689 static int
690 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
691 {
692 struct cx231xx_fh *fh = vq->priv_data;
693 struct cx231xx *dev = fh->dev;
694 struct v4l2_frequency f;
695
696 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
697 if (0 == *count)
698 *count = CX231XX_DEF_BUF;
699
700 if (*count < CX231XX_MIN_BUF)
701 *count = CX231XX_MIN_BUF;
702
703 /* Ask tuner to go to analog mode */
704 memset(&f, 0, sizeof(f));
705 f.frequency = dev->ctl_freq;
706 f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
707
708 call_all(dev, tuner, s_frequency, &f);
709
710 return 0;
711 }
712
713 /* This is called *without* dev->slock held; please keep it that way */
714 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
715 {
716 struct cx231xx_fh *fh = vq->priv_data;
717 struct cx231xx *dev = fh->dev;
718 unsigned long flags = 0;
719
720 if (in_interrupt())
721 BUG();
722
723 /* We used to wait for the buffer to finish here, but this didn't work
724 because, as we were keeping the state as VIDEOBUF_QUEUED,
725 videobuf_queue_cancel marked it as finished for us.
726 (Also, it could wedge forever if the hardware was misconfigured.)
727
728 This should be safe; by the time we get here, the buffer isn't
729 queued anymore. If we ever start marking the buffers as
730 VIDEOBUF_ACTIVE, it won't be, though.
731 */
732 spin_lock_irqsave(&dev->video_mode.slock, flags);
733 if (dev->video_mode.isoc_ctl.buf == buf)
734 dev->video_mode.isoc_ctl.buf = NULL;
735 spin_unlock_irqrestore(&dev->video_mode.slock, flags);
736
737 videobuf_vmalloc_free(&buf->vb);
738 buf->vb.state = VIDEOBUF_NEEDS_INIT;
739 }
740
741 static int
742 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
743 enum v4l2_field field)
744 {
745 struct cx231xx_fh *fh = vq->priv_data;
746 struct cx231xx_buffer *buf =
747 container_of(vb, struct cx231xx_buffer, vb);
748 struct cx231xx *dev = fh->dev;
749 int rc = 0, urb_init = 0;
750
751 /* The only currently supported format is 16 bits/pixel */
752 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
753 + 7) >> 3;
754 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
755 return -EINVAL;
756
757 buf->vb.width = dev->width;
758 buf->vb.height = dev->height;
759 buf->vb.field = field;
760
761 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
762 rc = videobuf_iolock(vq, &buf->vb, NULL);
763 if (rc < 0)
764 goto fail;
765 }
766
767 if (!dev->video_mode.isoc_ctl.num_bufs)
768 urb_init = 1;
769
770 if (urb_init) {
771 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
772 CX231XX_NUM_BUFS,
773 dev->video_mode.max_pkt_size,
774 cx231xx_isoc_copy);
775 if (rc < 0)
776 goto fail;
777 }
778
779 buf->vb.state = VIDEOBUF_PREPARED;
780 return 0;
781
782 fail:
783 free_buffer(vq, buf);
784 return rc;
785 }
786
787 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
788 {
789 struct cx231xx_buffer *buf =
790 container_of(vb, struct cx231xx_buffer, vb);
791 struct cx231xx_fh *fh = vq->priv_data;
792 struct cx231xx *dev = fh->dev;
793 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
794
795 buf->vb.state = VIDEOBUF_QUEUED;
796 list_add_tail(&buf->vb.queue, &vidq->active);
797
798 }
799
800 static void buffer_release(struct videobuf_queue *vq,
801 struct videobuf_buffer *vb)
802 {
803 struct cx231xx_buffer *buf =
804 container_of(vb, struct cx231xx_buffer, vb);
805 struct cx231xx_fh *fh = vq->priv_data;
806 struct cx231xx *dev = (struct cx231xx *)fh->dev;
807
808 cx231xx_isocdbg("cx231xx: called buffer_release\n");
809
810 free_buffer(vq, buf);
811 }
812
813 static struct videobuf_queue_ops cx231xx_video_qops = {
814 .buf_setup = buffer_setup,
815 .buf_prepare = buffer_prepare,
816 .buf_queue = buffer_queue,
817 .buf_release = buffer_release,
818 };
819
820 /********************* v4l2 interface **************************************/
821
822 void video_mux(struct cx231xx *dev, int index)
823 {
824 dev->video_input = index;
825 dev->ctl_ainput = INPUT(index)->amux;
826
827 cx231xx_set_video_input_mux(dev, index);
828
829 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
830
831 cx231xx_set_audio_input(dev, dev->ctl_ainput);
832
833 cx231xx_info("video_mux : %d\n", index);
834
835 /* do mode control overrides if required */
836 cx231xx_do_mode_ctrl_overrides(dev);
837 }
838
839 /* Usage lock check functions */
840 static int res_get(struct cx231xx_fh *fh)
841 {
842 struct cx231xx *dev = fh->dev;
843 int rc = 0;
844
845 /* This instance already has stream_on */
846 if (fh->stream_on)
847 return rc;
848
849 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
850 if (dev->stream_on)
851 return -EBUSY;
852 dev->stream_on = 1;
853 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
854 if (dev->vbi_stream_on)
855 return -EBUSY;
856 dev->vbi_stream_on = 1;
857 } else
858 return -EINVAL;
859
860 fh->stream_on = 1;
861
862 return rc;
863 }
864
865 static int res_check(struct cx231xx_fh *fh)
866 {
867 return fh->stream_on;
868 }
869
870 static void res_free(struct cx231xx_fh *fh)
871 {
872 struct cx231xx *dev = fh->dev;
873
874 fh->stream_on = 0;
875
876 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
877 dev->stream_on = 0;
878 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
879 dev->vbi_stream_on = 0;
880 }
881
882 static int check_dev(struct cx231xx *dev)
883 {
884 if (dev->state & DEV_DISCONNECTED) {
885 cx231xx_errdev("v4l2 ioctl: device not present\n");
886 return -ENODEV;
887 }
888
889 if (dev->state & DEV_MISCONFIGURED) {
890 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
891 "close and open it again\n");
892 return -EIO;
893 }
894 return 0;
895 }
896
897 static void get_scale(struct cx231xx *dev,
898 unsigned int width, unsigned int height,
899 unsigned int *hscale, unsigned int *vscale)
900 {
901 unsigned int maxw = norm_maxw(dev);
902 unsigned int maxh = norm_maxh(dev);
903
904 *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
905 if (*hscale >= 0x4000)
906 *hscale = 0x3fff;
907
908 *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
909 if (*vscale >= 0x4000)
910 *vscale = 0x3fff;
911 }
912
913 /* ------------------------------------------------------------------
914 IOCTL vidioc handling
915 ------------------------------------------------------------------*/
916
917 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
918 struct v4l2_format *f)
919 {
920 struct cx231xx_fh *fh = priv;
921 struct cx231xx *dev = fh->dev;
922
923 mutex_lock(&dev->lock);
924
925 f->fmt.pix.width = dev->width;
926 f->fmt.pix.height = dev->height;
927 f->fmt.pix.pixelformat = dev->format->fourcc;
928 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
929 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
930 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
931
932 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
933
934 mutex_unlock(&dev->lock);
935
936 return 0;
937 }
938
939 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
940 {
941 unsigned int i;
942
943 for (i = 0; i < ARRAY_SIZE(format); i++)
944 if (format[i].fourcc == fourcc)
945 return &format[i];
946
947 return NULL;
948 }
949
950 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
951 struct v4l2_format *f)
952 {
953 struct cx231xx_fh *fh = priv;
954 struct cx231xx *dev = fh->dev;
955 unsigned int width = f->fmt.pix.width;
956 unsigned int height = f->fmt.pix.height;
957 unsigned int maxw = norm_maxw(dev);
958 unsigned int maxh = norm_maxh(dev);
959 unsigned int hscale, vscale;
960 struct cx231xx_fmt *fmt;
961
962 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
963 if (!fmt) {
964 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
965 f->fmt.pix.pixelformat);
966 return -EINVAL;
967 }
968
969 /* width must even because of the YUYV format
970 height must be even because of interlacing */
971 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
972
973 get_scale(dev, width, height, &hscale, &vscale);
974
975 width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
976 height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
977
978 f->fmt.pix.width = width;
979 f->fmt.pix.height = height;
980 f->fmt.pix.pixelformat = fmt->fourcc;
981 f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
982 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
983 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
984 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
985
986 return 0;
987 }
988
989 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
990 struct v4l2_format *f)
991 {
992 struct cx231xx_fh *fh = priv;
993 struct cx231xx *dev = fh->dev;
994 int rc;
995 struct cx231xx_fmt *fmt;
996
997 rc = check_dev(dev);
998 if (rc < 0)
999 return rc;
1000
1001 mutex_lock(&dev->lock);
1002
1003 vidioc_try_fmt_vid_cap(file, priv, f);
1004
1005 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1006 if (!fmt) {
1007 rc = -EINVAL;
1008 goto out;
1009 }
1010
1011 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1012 cx231xx_errdev("%s queue busy\n", __func__);
1013 rc = -EBUSY;
1014 goto out;
1015 }
1016
1017 if (dev->stream_on && !fh->stream_on) {
1018 cx231xx_errdev("%s device in use by another fh\n", __func__);
1019 rc = -EBUSY;
1020 goto out;
1021 }
1022
1023 /* set new image size */
1024 dev->width = f->fmt.pix.width;
1025 dev->height = f->fmt.pix.height;
1026 dev->format = fmt;
1027 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1028
1029 call_all(dev, video, s_fmt, f);
1030
1031 /* Set the correct alternate setting for this resolution */
1032 cx231xx_resolution_set(dev);
1033
1034 out:
1035 mutex_unlock(&dev->lock);
1036 return rc;
1037 }
1038
1039 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1040 {
1041 struct cx231xx_fh *fh = priv;
1042 struct cx231xx *dev = fh->dev;
1043
1044 *id = dev->norm;
1045 return 0;
1046 }
1047
1048 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1049 {
1050 struct cx231xx_fh *fh = priv;
1051 struct cx231xx *dev = fh->dev;
1052 struct v4l2_format f;
1053 int rc;
1054
1055 rc = check_dev(dev);
1056 if (rc < 0)
1057 return rc;
1058
1059 cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1060
1061 mutex_lock(&dev->lock);
1062 dev->norm = *norm;
1063
1064 /* Adjusts width/height, if needed */
1065 f.fmt.pix.width = dev->width;
1066 f.fmt.pix.height = dev->height;
1067 vidioc_try_fmt_vid_cap(file, priv, &f);
1068
1069 /* set new image size */
1070 dev->width = f.fmt.pix.width;
1071 dev->height = f.fmt.pix.height;
1072 get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1073
1074 call_all(dev, core, s_std, dev->norm);
1075
1076 mutex_unlock(&dev->lock);
1077
1078 cx231xx_resolution_set(dev);
1079
1080 /* do mode control overrides */
1081 cx231xx_do_mode_ctrl_overrides(dev);
1082
1083 return 0;
1084 }
1085
1086 static const char *iname[] = {
1087 [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1088 [CX231XX_VMUX_SVIDEO] = "S-Video",
1089 [CX231XX_VMUX_TELEVISION] = "Television",
1090 [CX231XX_VMUX_CABLE] = "Cable TV",
1091 [CX231XX_VMUX_DVB] = "DVB",
1092 [CX231XX_VMUX_DEBUG] = "for debug only",
1093 };
1094
1095 static int vidioc_enum_input(struct file *file, void *priv,
1096 struct v4l2_input *i)
1097 {
1098 struct cx231xx_fh *fh = priv;
1099 struct cx231xx *dev = fh->dev;
1100 unsigned int n;
1101
1102 n = i->index;
1103 if (n >= MAX_CX231XX_INPUT)
1104 return -EINVAL;
1105 if (0 == INPUT(n)->type)
1106 return -EINVAL;
1107
1108 i->index = n;
1109 i->type = V4L2_INPUT_TYPE_CAMERA;
1110
1111 strcpy(i->name, iname[INPUT(n)->type]);
1112
1113 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1114 (CX231XX_VMUX_CABLE == INPUT(n)->type))
1115 i->type = V4L2_INPUT_TYPE_TUNER;
1116
1117 i->std = dev->vdev->tvnorms;
1118
1119 return 0;
1120 }
1121
1122 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1123 {
1124 struct cx231xx_fh *fh = priv;
1125 struct cx231xx *dev = fh->dev;
1126
1127 *i = dev->video_input;
1128
1129 return 0;
1130 }
1131
1132 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1133 {
1134 struct cx231xx_fh *fh = priv;
1135 struct cx231xx *dev = fh->dev;
1136 int rc;
1137
1138 rc = check_dev(dev);
1139 if (rc < 0)
1140 return rc;
1141
1142 if (i >= MAX_CX231XX_INPUT)
1143 return -EINVAL;
1144 if (0 == INPUT(i)->type)
1145 return -EINVAL;
1146
1147 mutex_lock(&dev->lock);
1148
1149 video_mux(dev, i);
1150
1151 mutex_unlock(&dev->lock);
1152 return 0;
1153 }
1154
1155 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1156 {
1157 struct cx231xx_fh *fh = priv;
1158 struct cx231xx *dev = fh->dev;
1159
1160 switch (a->index) {
1161 case CX231XX_AMUX_VIDEO:
1162 strcpy(a->name, "Television");
1163 break;
1164 case CX231XX_AMUX_LINE_IN:
1165 strcpy(a->name, "Line In");
1166 break;
1167 default:
1168 return -EINVAL;
1169 }
1170
1171 a->index = dev->ctl_ainput;
1172 a->capability = V4L2_AUDCAP_STEREO;
1173
1174 return 0;
1175 }
1176
1177 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1178 {
1179 struct cx231xx_fh *fh = priv;
1180 struct cx231xx *dev = fh->dev;
1181 int status = 0;
1182
1183 /* Doesn't allow manual routing */
1184 if (a->index != dev->ctl_ainput)
1185 return -EINVAL;
1186
1187 dev->ctl_ainput = INPUT(a->index)->amux;
1188 status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1189
1190 return status;
1191 }
1192
1193 static int vidioc_queryctrl(struct file *file, void *priv,
1194 struct v4l2_queryctrl *qc)
1195 {
1196 struct cx231xx_fh *fh = priv;
1197 struct cx231xx *dev = fh->dev;
1198 int id = qc->id;
1199 int i;
1200 int rc;
1201
1202 rc = check_dev(dev);
1203 if (rc < 0)
1204 return rc;
1205
1206 qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1207 if (unlikely(qc->id == 0))
1208 return -EINVAL;
1209
1210 memset(qc, 0, sizeof(*qc));
1211
1212 qc->id = id;
1213
1214 if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1215 return -EINVAL;
1216
1217 for (i = 0; i < CX231XX_CTLS; i++)
1218 if (cx231xx_ctls[i].v.id == qc->id)
1219 break;
1220
1221 if (i == CX231XX_CTLS) {
1222 *qc = no_ctl;
1223 return 0;
1224 }
1225 *qc = cx231xx_ctls[i].v;
1226
1227 mutex_lock(&dev->lock);
1228 call_all(dev, core, queryctrl, qc);
1229 mutex_unlock(&dev->lock);
1230
1231 if (qc->type)
1232 return 0;
1233 else
1234 return -EINVAL;
1235 }
1236
1237 static int vidioc_g_ctrl(struct file *file, void *priv,
1238 struct v4l2_control *ctrl)
1239 {
1240 struct cx231xx_fh *fh = priv;
1241 struct cx231xx *dev = fh->dev;
1242 int rc;
1243
1244 rc = check_dev(dev);
1245 if (rc < 0)
1246 return rc;
1247
1248 mutex_lock(&dev->lock);
1249 call_all(dev, core, g_ctrl, ctrl);
1250 mutex_unlock(&dev->lock);
1251 return rc;
1252 }
1253
1254 static int vidioc_s_ctrl(struct file *file, void *priv,
1255 struct v4l2_control *ctrl)
1256 {
1257 struct cx231xx_fh *fh = priv;
1258 struct cx231xx *dev = fh->dev;
1259 int rc;
1260
1261 rc = check_dev(dev);
1262 if (rc < 0)
1263 return rc;
1264
1265 mutex_lock(&dev->lock);
1266 call_all(dev, core, s_ctrl, ctrl);
1267 mutex_unlock(&dev->lock);
1268 return rc;
1269 }
1270
1271 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1272 {
1273 struct cx231xx_fh *fh = priv;
1274 struct cx231xx *dev = fh->dev;
1275 int rc;
1276
1277 rc = check_dev(dev);
1278 if (rc < 0)
1279 return rc;
1280
1281 if (0 != t->index)
1282 return -EINVAL;
1283
1284 strcpy(t->name, "Tuner");
1285
1286 t->type = V4L2_TUNER_ANALOG_TV;
1287 t->capability = V4L2_TUNER_CAP_NORM;
1288 t->rangehigh = 0xffffffffUL;
1289 t->signal = 0xffff; /* LOCKED */
1290
1291 return 0;
1292 }
1293
1294 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1295 {
1296 struct cx231xx_fh *fh = priv;
1297 struct cx231xx *dev = fh->dev;
1298 int rc;
1299
1300 rc = check_dev(dev);
1301 if (rc < 0)
1302 return rc;
1303
1304 if (0 != t->index)
1305 return -EINVAL;
1306 #if 0
1307 mutex_lock(&dev->lock);
1308 call_all(dev, tuner, s_tuner, t);
1309 mutex_unlock(&dev->lock);
1310 #endif
1311 return 0;
1312 }
1313
1314 static int vidioc_g_frequency(struct file *file, void *priv,
1315 struct v4l2_frequency *f)
1316 {
1317 struct cx231xx_fh *fh = priv;
1318 struct cx231xx *dev = fh->dev;
1319
1320 mutex_lock(&dev->lock);
1321 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1322 f->frequency = dev->ctl_freq;
1323
1324 call_all(dev, tuner, g_frequency, f);
1325
1326 mutex_unlock(&dev->lock);
1327
1328 return 0;
1329 }
1330
1331 static int vidioc_s_frequency(struct file *file, void *priv,
1332 struct v4l2_frequency *f)
1333 {
1334 struct cx231xx_fh *fh = priv;
1335 struct cx231xx *dev = fh->dev;
1336 int rc;
1337
1338 rc = check_dev(dev);
1339 if (rc < 0)
1340 return rc;
1341
1342 if (0 != f->tuner)
1343 return -EINVAL;
1344
1345 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1346 return -EINVAL;
1347 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1348 return -EINVAL;
1349
1350 /* set pre channel change settings in DIF first */
1351 rc = cx231xx_tuner_pre_channel_change(dev);
1352
1353 mutex_lock(&dev->lock);
1354
1355 dev->ctl_freq = f->frequency;
1356
1357 if (dev->tuner_type == TUNER_XC5000) {
1358 if (dev->cx231xx_set_analog_freq != NULL)
1359 dev->cx231xx_set_analog_freq(dev, f->frequency);
1360 } else
1361 call_all(dev, tuner, s_frequency, f);
1362
1363 mutex_unlock(&dev->lock);
1364
1365 /* set post channel change settings in DIF first */
1366 rc = cx231xx_tuner_post_channel_change(dev);
1367
1368 cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1369
1370 return rc;
1371 }
1372
1373 #ifdef CONFIG_VIDEO_ADV_DEBUG
1374
1375 /*
1376 -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1377 chip=<chip>[,min=<addr>,max=<addr>]
1378 dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1379 -r, --set-register=type=<host/i2cdrv/i2caddr>,
1380 chip=<chip>,reg=<addr>,val=<val>
1381 set the register [VIDIOC_DBG_S_REGISTER]
1382
1383 if type == host, then <chip> is the hosts chip ID (default 0)
1384 if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1385 if type == i2caddr, then <chip> is the 7-bit I2C address
1386 */
1387
1388 static int vidioc_g_register(struct file *file, void *priv,
1389 struct v4l2_dbg_register *reg)
1390 {
1391 struct cx231xx_fh *fh = priv;
1392 struct cx231xx *dev = fh->dev;
1393 int ret = 0;
1394 u8 value[4] = { 0, 0, 0, 0 };
1395 u32 data = 0;
1396
1397 switch (reg->match.type) {
1398 case V4L2_CHIP_MATCH_HOST:
1399 switch (reg->match.addr) {
1400 case 0: /* Cx231xx - internal registers */
1401 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1402 (u16)reg->reg, value, 4);
1403 reg->val = value[0] | value[1] << 8 |
1404 value[2] << 16 | value[3] << 24;
1405 break;
1406 case 1: /* AFE - read byte */
1407 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1408 (u16)reg->reg, 2, &data, 1);
1409 reg->val = le32_to_cpu(data & 0xff);
1410 break;
1411 case 14: /* AFE - read dword */
1412 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1413 (u16)reg->reg, 2, &data, 4);
1414 reg->val = le32_to_cpu(data);
1415 break;
1416 case 2: /* Video Block - read byte */
1417 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1418 (u16)reg->reg, 2, &data, 1);
1419 reg->val = le32_to_cpu(data & 0xff);
1420 break;
1421 case 24: /* Video Block - read dword */
1422 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1423 (u16)reg->reg, 2, &data, 4);
1424 reg->val = le32_to_cpu(data);
1425 break;
1426 case 3: /* I2S block - read byte */
1427 ret = cx231xx_read_i2c_data(dev,
1428 I2S_BLK_DEVICE_ADDRESS,
1429 (u16)reg->reg, 1,
1430 &data, 1);
1431 reg->val = le32_to_cpu(data & 0xff);
1432 break;
1433 case 34: /* I2S Block - read dword */
1434 ret =
1435 cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1436 (u16)reg->reg, 1, &data, 4);
1437 reg->val = le32_to_cpu(data);
1438 break;
1439 }
1440 return ret < 0 ? ret : 0;
1441
1442 case V4L2_CHIP_MATCH_I2C_DRIVER:
1443 call_all(dev, core, g_register, reg);
1444 return 0;
1445 case V4L2_CHIP_MATCH_I2C_ADDR:
1446 /* Not supported yet */
1447 return -EINVAL;
1448 default:
1449 if (!v4l2_chip_match_host(&reg->match))
1450 return -EINVAL;
1451 }
1452
1453 mutex_lock(&dev->lock);
1454 call_all(dev, core, g_register, reg);
1455 mutex_unlock(&dev->lock);
1456
1457 return ret;
1458 }
1459
1460 static int vidioc_s_register(struct file *file, void *priv,
1461 struct v4l2_dbg_register *reg)
1462 {
1463 struct cx231xx_fh *fh = priv;
1464 struct cx231xx *dev = fh->dev;
1465 int ret = 0;
1466 __le64 buf;
1467 u32 value;
1468 u8 data[4] = { 0, 0, 0, 0 };
1469
1470 buf = cpu_to_le64(reg->val);
1471
1472 switch (reg->match.type) {
1473 case V4L2_CHIP_MATCH_HOST:
1474 {
1475 value = (u32) buf & 0xffffffff;
1476
1477 switch (reg->match.addr) {
1478 case 0: /* cx231xx internal registers */
1479 data[0] = (u8) value;
1480 data[1] = (u8) (value >> 8);
1481 data[2] = (u8) (value >> 16);
1482 data[3] = (u8) (value >> 24);
1483 ret = cx231xx_write_ctrl_reg(dev,
1484 VRT_SET_REGISTER,
1485 (u16)reg->reg, data,
1486 4);
1487 break;
1488 case 1: /* AFE - read byte */
1489 ret = cx231xx_write_i2c_data(dev,
1490 AFE_DEVICE_ADDRESS,
1491 (u16)reg->reg, 2,
1492 value, 1);
1493 break;
1494 case 14: /* AFE - read dword */
1495 ret = cx231xx_write_i2c_data(dev,
1496 AFE_DEVICE_ADDRESS,
1497 (u16)reg->reg, 2,
1498 value, 4);
1499 break;
1500 case 2: /* Video Block - read byte */
1501 ret =
1502 cx231xx_write_i2c_data(dev,
1503 VID_BLK_I2C_ADDRESS,
1504 (u16)reg->reg, 2,
1505 value, 1);
1506 break;
1507 case 24: /* Video Block - read dword */
1508 ret =
1509 cx231xx_write_i2c_data(dev,
1510 VID_BLK_I2C_ADDRESS,
1511 (u16)reg->reg, 2,
1512 value, 4);
1513 break;
1514 case 3: /* I2S block - read byte */
1515 ret =
1516 cx231xx_write_i2c_data(dev,
1517 I2S_BLK_DEVICE_ADDRESS,
1518 (u16)reg->reg, 1,
1519 value, 1);
1520 break;
1521 case 34: /* I2S block - read dword */
1522 ret =
1523 cx231xx_write_i2c_data(dev,
1524 I2S_BLK_DEVICE_ADDRESS,
1525 (u16)reg->reg, 1,
1526 value, 4);
1527 break;
1528 }
1529 }
1530 return ret < 0 ? ret : 0;
1531
1532 default:
1533 break;
1534 }
1535
1536 mutex_lock(&dev->lock);
1537 call_all(dev, core, s_register, reg);
1538 mutex_unlock(&dev->lock);
1539
1540 return ret;
1541 }
1542 #endif
1543
1544 static int vidioc_cropcap(struct file *file, void *priv,
1545 struct v4l2_cropcap *cc)
1546 {
1547 struct cx231xx_fh *fh = priv;
1548 struct cx231xx *dev = fh->dev;
1549
1550 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1551 return -EINVAL;
1552
1553 cc->bounds.left = 0;
1554 cc->bounds.top = 0;
1555 cc->bounds.width = dev->width;
1556 cc->bounds.height = dev->height;
1557 cc->defrect = cc->bounds;
1558 cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1559 cc->pixelaspect.denominator = 59;
1560
1561 return 0;
1562 }
1563
1564 static int vidioc_streamon(struct file *file, void *priv,
1565 enum v4l2_buf_type type)
1566 {
1567 struct cx231xx_fh *fh = priv;
1568 struct cx231xx *dev = fh->dev;
1569 int rc;
1570
1571 rc = check_dev(dev);
1572 if (rc < 0)
1573 return rc;
1574
1575 mutex_lock(&dev->lock);
1576 rc = res_get(fh);
1577
1578 if (likely(rc >= 0))
1579 rc = videobuf_streamon(&fh->vb_vidq);
1580
1581 call_all(dev, video, s_stream, 1);
1582
1583 mutex_unlock(&dev->lock);
1584
1585 return rc;
1586 }
1587
1588 static int vidioc_streamoff(struct file *file, void *priv,
1589 enum v4l2_buf_type type)
1590 {
1591 struct cx231xx_fh *fh = priv;
1592 struct cx231xx *dev = fh->dev;
1593 int rc;
1594
1595 rc = check_dev(dev);
1596 if (rc < 0)
1597 return rc;
1598
1599 if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1600 (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1601 return -EINVAL;
1602 if (type != fh->type)
1603 return -EINVAL;
1604
1605 mutex_lock(&dev->lock);
1606
1607 cx25840_call(dev, video, s_stream, 0);
1608
1609 videobuf_streamoff(&fh->vb_vidq);
1610 res_free(fh);
1611
1612 mutex_unlock(&dev->lock);
1613
1614 return 0;
1615 }
1616
1617 static int vidioc_querycap(struct file *file, void *priv,
1618 struct v4l2_capability *cap)
1619 {
1620 struct cx231xx_fh *fh = priv;
1621 struct cx231xx *dev = fh->dev;
1622
1623 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1624 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1625 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1626
1627 cap->version = CX231XX_VERSION_CODE;
1628
1629 cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1630 #if 0
1631 V4L2_CAP_SLICED_VBI_CAPTURE |
1632 #endif
1633 V4L2_CAP_VIDEO_CAPTURE |
1634 V4L2_CAP_AUDIO |
1635 V4L2_CAP_READWRITE |
1636 V4L2_CAP_STREAMING;
1637
1638 if (dev->tuner_type != TUNER_ABSENT)
1639 cap->capabilities |= V4L2_CAP_TUNER;
1640
1641 return 0;
1642 }
1643
1644 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1645 struct v4l2_fmtdesc *f)
1646 {
1647 if (unlikely(f->index >= ARRAY_SIZE(format)))
1648 return -EINVAL;
1649
1650 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1651 f->pixelformat = format[f->index].fourcc;
1652
1653 return 0;
1654 }
1655
1656 /* Sliced VBI ioctls */
1657 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1658 struct v4l2_format *f)
1659 {
1660 struct cx231xx_fh *fh = priv;
1661 struct cx231xx *dev = fh->dev;
1662 int rc;
1663
1664 rc = check_dev(dev);
1665 if (rc < 0)
1666 return rc;
1667
1668 mutex_lock(&dev->lock);
1669
1670 f->fmt.sliced.service_set = 0;
1671
1672 call_all(dev, video, g_fmt, f);
1673
1674 if (f->fmt.sliced.service_set == 0)
1675 rc = -EINVAL;
1676
1677 mutex_unlock(&dev->lock);
1678 return rc;
1679 }
1680
1681 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1682 struct v4l2_format *f)
1683 {
1684 struct cx231xx_fh *fh = priv;
1685 struct cx231xx *dev = fh->dev;
1686 int rc;
1687
1688 rc = check_dev(dev);
1689 if (rc < 0)
1690 return rc;
1691
1692 mutex_lock(&dev->lock);
1693 call_all(dev, video, g_fmt, f);
1694 mutex_unlock(&dev->lock);
1695
1696 if (f->fmt.sliced.service_set == 0)
1697 return -EINVAL;
1698
1699 return 0;
1700 }
1701
1702 /* RAW VBI ioctls */
1703
1704 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1705 struct v4l2_format *f)
1706 {
1707 struct cx231xx_fh *fh = priv;
1708 struct cx231xx *dev = fh->dev;
1709
1710 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1711 35468950 : 28636363;
1712 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1713 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1714 f->fmt.vbi.offset = 64 * 4;
1715 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1716 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1717 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1718 PAL_VBI_LINES : NTSC_VBI_LINES;
1719 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1720 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1721 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1722
1723 return 0;
1724
1725 }
1726
1727 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1728 struct v4l2_format *f)
1729 {
1730 struct cx231xx_fh *fh = priv;
1731 struct cx231xx *dev = fh->dev;
1732
1733 if (dev->vbi_stream_on && !fh->stream_on) {
1734 cx231xx_errdev("%s device in use by another fh\n", __func__);
1735 return -EBUSY;
1736 }
1737
1738 f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1739 f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1740 35468950 : 28636363;
1741 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1742 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1743 f->fmt.vbi.offset = 244;
1744 f->fmt.vbi.flags = 0;
1745 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1746 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1747 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1748 PAL_VBI_LINES : NTSC_VBI_LINES;
1749 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1750 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1751 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1752
1753 return 0;
1754
1755 }
1756
1757 static int vidioc_reqbufs(struct file *file, void *priv,
1758 struct v4l2_requestbuffers *rb)
1759 {
1760 struct cx231xx_fh *fh = priv;
1761 struct cx231xx *dev = fh->dev;
1762 int rc;
1763
1764 rc = check_dev(dev);
1765 if (rc < 0)
1766 return rc;
1767
1768 return videobuf_reqbufs(&fh->vb_vidq, rb);
1769 }
1770
1771 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1772 {
1773 struct cx231xx_fh *fh = priv;
1774 struct cx231xx *dev = fh->dev;
1775 int rc;
1776
1777 rc = check_dev(dev);
1778 if (rc < 0)
1779 return rc;
1780
1781 return videobuf_querybuf(&fh->vb_vidq, b);
1782 }
1783
1784 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1785 {
1786 struct cx231xx_fh *fh = priv;
1787 struct cx231xx *dev = fh->dev;
1788 int rc;
1789
1790 rc = check_dev(dev);
1791 if (rc < 0)
1792 return rc;
1793
1794 return videobuf_qbuf(&fh->vb_vidq, b);
1795 }
1796
1797 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1798 {
1799 struct cx231xx_fh *fh = priv;
1800 struct cx231xx *dev = fh->dev;
1801 int rc;
1802
1803 rc = check_dev(dev);
1804 if (rc < 0)
1805 return rc;
1806
1807 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1808 }
1809
1810 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1811 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1812 {
1813 struct cx231xx_fh *fh = priv;
1814
1815 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1816 }
1817 #endif
1818
1819 /* ----------------------------------------------------------- */
1820 /* RADIO ESPECIFIC IOCTLS */
1821 /* ----------------------------------------------------------- */
1822
1823 static int radio_querycap(struct file *file, void *priv,
1824 struct v4l2_capability *cap)
1825 {
1826 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1827
1828 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1829 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1830 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1831
1832 cap->version = CX231XX_VERSION_CODE;
1833 cap->capabilities = V4L2_CAP_TUNER;
1834 return 0;
1835 }
1836
1837 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1838 {
1839 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1840
1841 if (unlikely(t->index > 0))
1842 return -EINVAL;
1843
1844 strcpy(t->name, "Radio");
1845 t->type = V4L2_TUNER_RADIO;
1846
1847 mutex_lock(&dev->lock);
1848 call_all(dev, tuner, s_tuner, t);
1849 mutex_unlock(&dev->lock);
1850
1851 return 0;
1852 }
1853
1854 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1855 {
1856 if (i->index != 0)
1857 return -EINVAL;
1858 strcpy(i->name, "Radio");
1859 i->type = V4L2_INPUT_TYPE_TUNER;
1860
1861 return 0;
1862 }
1863
1864 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1865 {
1866 if (unlikely(a->index))
1867 return -EINVAL;
1868
1869 strcpy(a->name, "Radio");
1870 return 0;
1871 }
1872
1873 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1874 {
1875 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1876
1877 if (0 != t->index)
1878 return -EINVAL;
1879
1880 mutex_lock(&dev->lock);
1881 call_all(dev, tuner, s_tuner, t);
1882 mutex_unlock(&dev->lock);
1883
1884 return 0;
1885 }
1886
1887 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1888 {
1889 return 0;
1890 }
1891
1892 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1893 {
1894 return 0;
1895 }
1896
1897 static int radio_queryctrl(struct file *file, void *priv,
1898 struct v4l2_queryctrl *c)
1899 {
1900 int i;
1901
1902 if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1903 return -EINVAL;
1904 if (c->id == V4L2_CID_AUDIO_MUTE) {
1905 for (i = 0; i < CX231XX_CTLS; i++)
1906 if (cx231xx_ctls[i].v.id == c->id)
1907 break;
1908 *c = cx231xx_ctls[i].v;
1909 } else
1910 *c = no_ctl;
1911 return 0;
1912 }
1913
1914 /*
1915 * cx231xx_v4l2_open()
1916 * inits the device and starts isoc transfer
1917 */
1918 static int cx231xx_v4l2_open(struct file *filp)
1919 {
1920 int errCode = 0, radio = 0;
1921 struct video_device *vdev = video_devdata(filp);
1922 struct cx231xx *dev = video_drvdata(filp);
1923 struct cx231xx_fh *fh;
1924 enum v4l2_buf_type fh_type = 0;
1925
1926 switch (vdev->vfl_type) {
1927 case VFL_TYPE_GRABBER:
1928 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1929 break;
1930 case VFL_TYPE_VBI:
1931 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1932 break;
1933 case VFL_TYPE_RADIO:
1934 radio = 1;
1935 break;
1936 }
1937
1938 mutex_lock(&dev->lock);
1939
1940 cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1941 video_device_node_name(vdev), v4l2_type_names[fh_type],
1942 dev->users);
1943
1944 #if 0
1945 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1946 if (errCode < 0) {
1947 cx231xx_errdev
1948 ("Device locked on digital mode. Can't open analog\n");
1949 mutex_unlock(&dev->lock);
1950 return -EBUSY;
1951 }
1952 #endif
1953
1954 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1955 if (!fh) {
1956 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1957 mutex_unlock(&dev->lock);
1958 return -ENOMEM;
1959 }
1960 fh->dev = dev;
1961 fh->radio = radio;
1962 fh->type = fh_type;
1963 filp->private_data = fh;
1964
1965 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1966 dev->width = norm_maxw(dev);
1967 dev->height = norm_maxh(dev);
1968 dev->hscale = 0;
1969 dev->vscale = 0;
1970
1971 /* Power up in Analog TV mode */
1972 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1973
1974 #if 0
1975 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1976 #endif
1977 cx231xx_resolution_set(dev);
1978
1979 /* set video alternate setting */
1980 cx231xx_set_video_alternate(dev);
1981
1982 /* Needed, since GPIO might have disabled power of
1983 some i2c device */
1984 cx231xx_config_i2c(dev);
1985
1986 /* device needs to be initialized before isoc transfer */
1987 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1988 video_mux(dev, dev->video_input);
1989
1990 }
1991 if (fh->radio) {
1992 cx231xx_videodbg("video_open: setting radio device\n");
1993
1994 /* cx231xx_start_radio(dev); */
1995
1996 call_all(dev, tuner, s_radio);
1997 }
1998
1999 dev->users++;
2000
2001 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2002 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2003 NULL, &dev->video_mode.slock,
2004 fh->type, V4L2_FIELD_INTERLACED,
2005 sizeof(struct cx231xx_buffer), fh);
2006 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2007 /* Set the required alternate setting VBI interface works in
2008 Bulk mode only */
2009 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2010
2011 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2012 NULL, &dev->vbi_mode.slock,
2013 fh->type, V4L2_FIELD_SEQ_TB,
2014 sizeof(struct cx231xx_buffer), fh);
2015 }
2016
2017 mutex_unlock(&dev->lock);
2018
2019 return errCode;
2020 }
2021
2022 /*
2023 * cx231xx_realease_resources()
2024 * unregisters the v4l2,i2c and usb devices
2025 * called when the device gets disconected or at module unload
2026 */
2027 void cx231xx_release_analog_resources(struct cx231xx *dev)
2028 {
2029
2030 /*FIXME: I2C IR should be disconnected */
2031
2032 if (dev->radio_dev) {
2033 if (video_is_registered(dev->radio_dev))
2034 video_unregister_device(dev->radio_dev);
2035 else
2036 video_device_release(dev->radio_dev);
2037 dev->radio_dev = NULL;
2038 }
2039 if (dev->vbi_dev) {
2040 cx231xx_info("V4L2 device %s deregistered\n",
2041 video_device_node_name(dev->vbi_dev));
2042 if (video_is_registered(dev->vbi_dev))
2043 video_unregister_device(dev->vbi_dev);
2044 else
2045 video_device_release(dev->vbi_dev);
2046 dev->vbi_dev = NULL;
2047 }
2048 if (dev->vdev) {
2049 cx231xx_info("V4L2 device %s deregistered\n",
2050 video_device_node_name(dev->vdev));
2051 if (video_is_registered(dev->vdev))
2052 video_unregister_device(dev->vdev);
2053 else
2054 video_device_release(dev->vdev);
2055 dev->vdev = NULL;
2056 }
2057 }
2058
2059 /*
2060 * cx231xx_v4l2_close()
2061 * stops streaming and deallocates all resources allocated by the v4l2
2062 * calls and ioctls
2063 */
2064 static int cx231xx_v4l2_close(struct file *filp)
2065 {
2066 struct cx231xx_fh *fh = filp->private_data;
2067 struct cx231xx *dev = fh->dev;
2068
2069 cx231xx_videodbg("users=%d\n", dev->users);
2070
2071 mutex_lock(&dev->lock);
2072
2073 if (res_check(fh))
2074 res_free(fh);
2075
2076 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2077 videobuf_stop(&fh->vb_vidq);
2078 videobuf_mmap_free(&fh->vb_vidq);
2079
2080 /* the device is already disconnect,
2081 free the remaining resources */
2082 if (dev->state & DEV_DISCONNECTED) {
2083 cx231xx_release_resources(dev);
2084 mutex_unlock(&dev->lock);
2085 kfree(dev);
2086 return 0;
2087 }
2088
2089 /* do this before setting alternate! */
2090 cx231xx_uninit_vbi_isoc(dev);
2091
2092 /* set alternate 0 */
2093 if (!dev->vbi_or_sliced_cc_mode)
2094 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2095 else
2096 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2097
2098 kfree(fh);
2099 dev->users--;
2100 wake_up_interruptible_nr(&dev->open, 1);
2101 mutex_unlock(&dev->lock);
2102 return 0;
2103 }
2104
2105 if (dev->users == 1) {
2106 videobuf_stop(&fh->vb_vidq);
2107 videobuf_mmap_free(&fh->vb_vidq);
2108
2109 /* the device is already disconnect,
2110 free the remaining resources */
2111 if (dev->state & DEV_DISCONNECTED) {
2112 cx231xx_release_resources(dev);
2113 mutex_unlock(&dev->lock);
2114 kfree(dev);
2115 return 0;
2116 }
2117
2118 /* Save some power by putting tuner to sleep */
2119 call_all(dev, core, s_power, 0);
2120
2121 /* do this before setting alternate! */
2122 cx231xx_uninit_isoc(dev);
2123 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2124
2125 /* set alternate 0 */
2126 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2127 }
2128 kfree(fh);
2129 dev->users--;
2130 wake_up_interruptible_nr(&dev->open, 1);
2131 mutex_unlock(&dev->lock);
2132 return 0;
2133 }
2134
2135 /*
2136 * cx231xx_v4l2_read()
2137 * will allocate buffers when called for the first time
2138 */
2139 static ssize_t
2140 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2141 loff_t *pos)
2142 {
2143 struct cx231xx_fh *fh = filp->private_data;
2144 struct cx231xx *dev = fh->dev;
2145 int rc;
2146
2147 rc = check_dev(dev);
2148 if (rc < 0)
2149 return rc;
2150
2151 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2152 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2153 mutex_lock(&dev->lock);
2154 rc = res_get(fh);
2155 mutex_unlock(&dev->lock);
2156
2157 if (unlikely(rc < 0))
2158 return rc;
2159
2160 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2161 filp->f_flags & O_NONBLOCK);
2162 }
2163 return 0;
2164 }
2165
2166 /*
2167 * cx231xx_v4l2_poll()
2168 * will allocate buffers when called for the first time
2169 */
2170 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2171 {
2172 struct cx231xx_fh *fh = filp->private_data;
2173 struct cx231xx *dev = fh->dev;
2174 int rc;
2175
2176 rc = check_dev(dev);
2177 if (rc < 0)
2178 return rc;
2179
2180 mutex_lock(&dev->lock);
2181 rc = res_get(fh);
2182 mutex_unlock(&dev->lock);
2183
2184 if (unlikely(rc < 0))
2185 return POLLERR;
2186
2187 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2188 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2189 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2190 else
2191 return POLLERR;
2192 }
2193
2194 /*
2195 * cx231xx_v4l2_mmap()
2196 */
2197 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2198 {
2199 struct cx231xx_fh *fh = filp->private_data;
2200 struct cx231xx *dev = fh->dev;
2201 int rc;
2202
2203 rc = check_dev(dev);
2204 if (rc < 0)
2205 return rc;
2206
2207 mutex_lock(&dev->lock);
2208 rc = res_get(fh);
2209 mutex_unlock(&dev->lock);
2210
2211 if (unlikely(rc < 0))
2212 return rc;
2213
2214 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2215
2216 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2217 (unsigned long)vma->vm_start,
2218 (unsigned long)vma->vm_end -
2219 (unsigned long)vma->vm_start, rc);
2220
2221 return rc;
2222 }
2223
2224 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2225 .owner = THIS_MODULE,
2226 .open = cx231xx_v4l2_open,
2227 .release = cx231xx_v4l2_close,
2228 .read = cx231xx_v4l2_read,
2229 .poll = cx231xx_v4l2_poll,
2230 .mmap = cx231xx_v4l2_mmap,
2231 .ioctl = video_ioctl2,
2232 };
2233
2234 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2235 .vidioc_querycap = vidioc_querycap,
2236 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2237 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2238 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2239 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2240 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2241 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2242 .vidioc_s_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2243 .vidioc_g_audio = vidioc_g_audio,
2244 .vidioc_s_audio = vidioc_s_audio,
2245 .vidioc_cropcap = vidioc_cropcap,
2246 .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap,
2247 .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2248 .vidioc_reqbufs = vidioc_reqbufs,
2249 .vidioc_querybuf = vidioc_querybuf,
2250 .vidioc_qbuf = vidioc_qbuf,
2251 .vidioc_dqbuf = vidioc_dqbuf,
2252 .vidioc_s_std = vidioc_s_std,
2253 .vidioc_g_std = vidioc_g_std,
2254 .vidioc_enum_input = vidioc_enum_input,
2255 .vidioc_g_input = vidioc_g_input,
2256 .vidioc_s_input = vidioc_s_input,
2257 .vidioc_queryctrl = vidioc_queryctrl,
2258 .vidioc_g_ctrl = vidioc_g_ctrl,
2259 .vidioc_s_ctrl = vidioc_s_ctrl,
2260 .vidioc_streamon = vidioc_streamon,
2261 .vidioc_streamoff = vidioc_streamoff,
2262 .vidioc_g_tuner = vidioc_g_tuner,
2263 .vidioc_s_tuner = vidioc_s_tuner,
2264 .vidioc_g_frequency = vidioc_g_frequency,
2265 .vidioc_s_frequency = vidioc_s_frequency,
2266 #ifdef CONFIG_VIDEO_ADV_DEBUG
2267 .vidioc_g_register = vidioc_g_register,
2268 .vidioc_s_register = vidioc_s_register,
2269 #endif
2270 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2271 .vidiocgmbuf = vidiocgmbuf,
2272 #endif
2273 };
2274
2275 static struct video_device cx231xx_vbi_template;
2276
2277 static const struct video_device cx231xx_video_template = {
2278 .fops = &cx231xx_v4l_fops,
2279 .release = video_device_release,
2280 .ioctl_ops = &video_ioctl_ops,
2281 .tvnorms = V4L2_STD_ALL,
2282 .current_norm = V4L2_STD_PAL,
2283 };
2284
2285 static const struct v4l2_file_operations radio_fops = {
2286 .owner = THIS_MODULE,
2287 .open = cx231xx_v4l2_open,
2288 .release = cx231xx_v4l2_close,
2289 .ioctl = video_ioctl2,
2290 };
2291
2292 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2293 .vidioc_querycap = radio_querycap,
2294 .vidioc_g_tuner = radio_g_tuner,
2295 .vidioc_enum_input = radio_enum_input,
2296 .vidioc_g_audio = radio_g_audio,
2297 .vidioc_s_tuner = radio_s_tuner,
2298 .vidioc_s_audio = radio_s_audio,
2299 .vidioc_s_input = radio_s_input,
2300 .vidioc_queryctrl = radio_queryctrl,
2301 .vidioc_g_ctrl = vidioc_g_ctrl,
2302 .vidioc_s_ctrl = vidioc_s_ctrl,
2303 .vidioc_g_frequency = vidioc_g_frequency,
2304 .vidioc_s_frequency = vidioc_s_frequency,
2305 #ifdef CONFIG_VIDEO_ADV_DEBUG
2306 .vidioc_g_register = vidioc_g_register,
2307 .vidioc_s_register = vidioc_s_register,
2308 #endif
2309 };
2310
2311 static struct video_device cx231xx_radio_template = {
2312 .name = "cx231xx-radio",
2313 .fops = &radio_fops,
2314 .ioctl_ops = &radio_ioctl_ops,
2315 };
2316
2317 /******************************** usb interface ******************************/
2318
2319 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2320 const struct video_device
2321 *template, const char *type_name)
2322 {
2323 struct video_device *vfd;
2324
2325 vfd = video_device_alloc();
2326 if (NULL == vfd)
2327 return NULL;
2328
2329 *vfd = *template;
2330 vfd->v4l2_dev = &dev->v4l2_dev;
2331 vfd->release = video_device_release;
2332 vfd->debug = video_debug;
2333
2334 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2335
2336 video_set_drvdata(vfd, dev);
2337 return vfd;
2338 }
2339
2340 int cx231xx_register_analog_devices(struct cx231xx *dev)
2341 {
2342 int ret;
2343
2344 cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2345 dev->name,
2346 (CX231XX_VERSION_CODE >> 16) & 0xff,
2347 (CX231XX_VERSION_CODE >> 8) & 0xff,
2348 CX231XX_VERSION_CODE & 0xff);
2349
2350 /* set default norm */
2351 /*dev->norm = cx231xx_video_template.current_norm; */
2352 dev->width = norm_maxw(dev);
2353 dev->height = norm_maxh(dev);
2354 dev->interlaced = 0;
2355 dev->hscale = 0;
2356 dev->vscale = 0;
2357
2358 /* Analog specific initialization */
2359 dev->format = &format[0];
2360 /* video_mux(dev, dev->video_input); */
2361
2362 /* Audio defaults */
2363 dev->mute = 1;
2364 dev->volume = 0x1f;
2365
2366 /* enable vbi capturing */
2367 /* write code here... */
2368
2369 /* allocate and fill video video_device struct */
2370 dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2371 if (!dev->vdev) {
2372 cx231xx_errdev("cannot allocate video_device.\n");
2373 return -ENODEV;
2374 }
2375
2376 /* register v4l2 video video_device */
2377 ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2378 video_nr[dev->devno]);
2379 if (ret) {
2380 cx231xx_errdev("unable to register video device (error=%i).\n",
2381 ret);
2382 return ret;
2383 }
2384
2385 cx231xx_info("%s/0: registered device %s [v4l2]\n",
2386 dev->name, video_device_node_name(dev->vdev));
2387
2388 /* Initialize VBI template */
2389 memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2390 sizeof(cx231xx_vbi_template));
2391 strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2392
2393 /* Allocate and fill vbi video_device struct */
2394 dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2395
2396 /* register v4l2 vbi video_device */
2397 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2398 vbi_nr[dev->devno]);
2399 if (ret < 0) {
2400 cx231xx_errdev("unable to register vbi device\n");
2401 return ret;
2402 }
2403
2404 cx231xx_info("%s/0: registered device %s\n",
2405 dev->name, video_device_node_name(dev->vbi_dev));
2406
2407 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2408 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2409 "radio");
2410 if (!dev->radio_dev) {
2411 cx231xx_errdev("cannot allocate video_device.\n");
2412 return -ENODEV;
2413 }
2414 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2415 radio_nr[dev->devno]);
2416 if (ret < 0) {
2417 cx231xx_errdev("can't register radio device\n");
2418 return ret;
2419 }
2420 cx231xx_info("Registered radio device as %s\n",
2421 video_device_node_name(dev->radio_dev));
2422 }
2423
2424 cx231xx_info("V4L2 device registered as %s and %s\n",
2425 video_device_node_name(dev->vdev),
2426 video_device_node_name(dev->vbi_dev));
2427
2428 return 0;
2429 }
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