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Merge tag 'drm-intel-next-2016-02-14' of git://anongit.freedesktop.org/drm-intel...
[deliverable/linux.git] / drivers / media / usb / 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 "cx231xx.h"
26 #include <linux/init.h>
27 #include <linux/list.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/bitmap.h>
31 #include <linux/i2c.h>
32 #include <linux/mm.h>
33 #include <linux/mutex.h>
34 #include <linux/slab.h>
35
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-event.h>
39 #include <media/drv-intf/msp3400.h>
40 #include <media/tuner.h>
41
42 #include "dvb_frontend.h"
43
44 #include "cx231xx-vbi.h"
45
46 #define CX231XX_VERSION "0.0.3"
47
48 #define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
49 #define DRIVER_DESC "Conexant cx231xx based USB video device driver"
50
51 #define cx231xx_videodbg(fmt, arg...) do {\
52 if (video_debug) \
53 printk(KERN_INFO "%s %s :"fmt, \
54 dev->name, __func__ , ##arg); } while (0)
55
56 static unsigned int isoc_debug;
57 module_param(isoc_debug, int, 0644);
58 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
59
60 #define cx231xx_isocdbg(fmt, arg...) \
61 do {\
62 if (isoc_debug) { \
63 printk(KERN_INFO "%s %s :"fmt, \
64 dev->name, __func__ , ##arg); \
65 } \
66 } while (0)
67
68 MODULE_AUTHOR(DRIVER_AUTHOR);
69 MODULE_DESCRIPTION(DRIVER_DESC);
70 MODULE_LICENSE("GPL");
71 MODULE_VERSION(CX231XX_VERSION);
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
103 static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
104 {
105 #ifdef CONFIG_MEDIA_CONTROLLER
106 struct media_device *mdev = dev->media_dev;
107 struct media_entity *entity, *decoder = NULL, *source;
108 struct media_link *link, *found_link = NULL;
109 int ret, active_links = 0;
110
111 if (!mdev)
112 return 0;
113
114 /*
115 * This will find the tuner that is connected into the decoder.
116 * Technically, this is not 100% correct, as the device may be
117 * using an analog input instead of the tuner. However, as we can't
118 * do DVB streaming while the DMA engine is being used for V4L2,
119 * this should be enough for the actual needs.
120 */
121 media_device_for_each_entity(entity, mdev) {
122 if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
123 decoder = entity;
124 break;
125 }
126 }
127 if (!decoder)
128 return 0;
129
130 list_for_each_entry(link, &decoder->links, list) {
131 if (link->sink->entity == decoder) {
132 found_link = link;
133 if (link->flags & MEDIA_LNK_FL_ENABLED)
134 active_links++;
135 break;
136 }
137 }
138
139 if (active_links == 1 || !found_link)
140 return 0;
141
142 source = found_link->source->entity;
143 list_for_each_entry(link, &source->links, list) {
144 struct media_entity *sink;
145 int flags = 0;
146
147 sink = link->sink->entity;
148
149 if (sink == entity)
150 flags = MEDIA_LNK_FL_ENABLED;
151
152 ret = media_entity_setup_link(link, flags);
153 if (ret) {
154 dev_err(dev->dev,
155 "Couldn't change link %s->%s to %s. Error %d\n",
156 source->name, sink->name,
157 flags ? "enabled" : "disabled",
158 ret);
159 return ret;
160 } else
161 dev_dbg(dev->dev,
162 "link %s->%s was %s\n",
163 source->name, sink->name,
164 flags ? "ENABLED" : "disabled");
165 }
166 #endif
167 return 0;
168 }
169
170 /* ------------------------------------------------------------------
171 Video buffer and parser functions
172 ------------------------------------------------------------------*/
173
174 /*
175 * Announces that a buffer were filled and request the next
176 */
177 static inline void buffer_filled(struct cx231xx *dev,
178 struct cx231xx_dmaqueue *dma_q,
179 struct cx231xx_buffer *buf)
180 {
181 /* Advice that buffer was filled */
182 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
183 buf->vb.state = VIDEOBUF_DONE;
184 buf->vb.field_count++;
185 v4l2_get_timestamp(&buf->vb.ts);
186
187 if (dev->USE_ISO)
188 dev->video_mode.isoc_ctl.buf = NULL;
189 else
190 dev->video_mode.bulk_ctl.buf = NULL;
191
192 list_del(&buf->vb.queue);
193 wake_up(&buf->vb.done);
194 }
195
196 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
197 {
198 char *errmsg = "Unknown";
199
200 switch (status) {
201 case -ENOENT:
202 errmsg = "unlinked synchronuously";
203 break;
204 case -ECONNRESET:
205 errmsg = "unlinked asynchronuously";
206 break;
207 case -ENOSR:
208 errmsg = "Buffer error (overrun)";
209 break;
210 case -EPIPE:
211 errmsg = "Stalled (device not responding)";
212 break;
213 case -EOVERFLOW:
214 errmsg = "Babble (bad cable?)";
215 break;
216 case -EPROTO:
217 errmsg = "Bit-stuff error (bad cable?)";
218 break;
219 case -EILSEQ:
220 errmsg = "CRC/Timeout (could be anything)";
221 break;
222 case -ETIME:
223 errmsg = "Device does not respond";
224 break;
225 }
226 if (packet < 0) {
227 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
228 } else {
229 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
230 packet, status, errmsg);
231 }
232 }
233
234 /*
235 * video-buf generic routine to get the next available buffer
236 */
237 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
238 struct cx231xx_buffer **buf)
239 {
240 struct cx231xx_video_mode *vmode =
241 container_of(dma_q, struct cx231xx_video_mode, vidq);
242 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
243
244 char *outp;
245
246 if (list_empty(&dma_q->active)) {
247 cx231xx_isocdbg("No active queue to serve\n");
248 if (dev->USE_ISO)
249 dev->video_mode.isoc_ctl.buf = NULL;
250 else
251 dev->video_mode.bulk_ctl.buf = NULL;
252 *buf = NULL;
253 return;
254 }
255
256 /* Get the next buffer */
257 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
258
259 /* Cleans up buffer - Useful for testing for frame/URB loss */
260 outp = videobuf_to_vmalloc(&(*buf)->vb);
261 memset(outp, 0, (*buf)->vb.size);
262
263 if (dev->USE_ISO)
264 dev->video_mode.isoc_ctl.buf = *buf;
265 else
266 dev->video_mode.bulk_ctl.buf = *buf;
267
268 return;
269 }
270
271 /*
272 * Controls the isoc copy of each urb packet
273 */
274 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
275 {
276 struct cx231xx_dmaqueue *dma_q = urb->context;
277 int i;
278 unsigned char *p_buffer;
279 u32 bytes_parsed = 0, buffer_size = 0;
280 u8 sav_eav = 0;
281
282 if (!dev)
283 return 0;
284
285 if (dev->state & DEV_DISCONNECTED)
286 return 0;
287
288 if (urb->status < 0) {
289 print_err_status(dev, -1, urb->status);
290 if (urb->status == -ENOENT)
291 return 0;
292 }
293
294 for (i = 0; i < urb->number_of_packets; i++) {
295 int status = urb->iso_frame_desc[i].status;
296
297 if (status < 0) {
298 print_err_status(dev, i, status);
299 if (urb->iso_frame_desc[i].status != -EPROTO)
300 continue;
301 }
302
303 if (urb->iso_frame_desc[i].actual_length <= 0) {
304 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
305 continue;
306 }
307 if (urb->iso_frame_desc[i].actual_length >
308 dev->video_mode.max_pkt_size) {
309 cx231xx_isocdbg("packet bigger than packet size");
310 continue;
311 }
312
313 /* get buffer pointer and length */
314 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
315 buffer_size = urb->iso_frame_desc[i].actual_length;
316 bytes_parsed = 0;
317
318 if (dma_q->is_partial_line) {
319 /* Handle the case of a partial line */
320 sav_eav = dma_q->last_sav;
321 } else {
322 /* Check for a SAV/EAV overlapping
323 the buffer boundary */
324 sav_eav =
325 cx231xx_find_boundary_SAV_EAV(p_buffer,
326 dma_q->partial_buf,
327 &bytes_parsed);
328 }
329
330 sav_eav &= 0xF0;
331 /* Get the first line if we have some portion of an SAV/EAV from
332 the last buffer or a partial line */
333 if (sav_eav) {
334 bytes_parsed += cx231xx_get_video_line(dev, dma_q,
335 sav_eav, /* SAV/EAV */
336 p_buffer + bytes_parsed, /* p_buffer */
337 buffer_size - bytes_parsed);/* buf size */
338 }
339
340 /* Now parse data that is completely in this buffer */
341 /* dma_q->is_partial_line = 0; */
342
343 while (bytes_parsed < buffer_size) {
344 u32 bytes_used = 0;
345
346 sav_eav = cx231xx_find_next_SAV_EAV(
347 p_buffer + bytes_parsed, /* p_buffer */
348 buffer_size - bytes_parsed, /* buf size */
349 &bytes_used);/* bytes used to get SAV/EAV */
350
351 bytes_parsed += bytes_used;
352
353 sav_eav &= 0xF0;
354 if (sav_eav && (bytes_parsed < buffer_size)) {
355 bytes_parsed += cx231xx_get_video_line(dev,
356 dma_q, sav_eav, /* SAV/EAV */
357 p_buffer + bytes_parsed,/* p_buffer */
358 buffer_size - bytes_parsed);/*buf size*/
359 }
360 }
361
362 /* Save the last four bytes of the buffer so we can check the
363 buffer boundary condition next time */
364 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
365 bytes_parsed = 0;
366
367 }
368 return 1;
369 }
370
371 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
372 {
373 struct cx231xx_dmaqueue *dma_q = urb->context;
374 unsigned char *p_buffer;
375 u32 bytes_parsed = 0, buffer_size = 0;
376 u8 sav_eav = 0;
377
378 if (!dev)
379 return 0;
380
381 if (dev->state & DEV_DISCONNECTED)
382 return 0;
383
384 if (urb->status < 0) {
385 print_err_status(dev, -1, urb->status);
386 if (urb->status == -ENOENT)
387 return 0;
388 }
389
390 if (1) {
391
392 /* get buffer pointer and length */
393 p_buffer = urb->transfer_buffer;
394 buffer_size = urb->actual_length;
395 bytes_parsed = 0;
396
397 if (dma_q->is_partial_line) {
398 /* Handle the case of a partial line */
399 sav_eav = dma_q->last_sav;
400 } else {
401 /* Check for a SAV/EAV overlapping
402 the buffer boundary */
403 sav_eav =
404 cx231xx_find_boundary_SAV_EAV(p_buffer,
405 dma_q->partial_buf,
406 &bytes_parsed);
407 }
408
409 sav_eav &= 0xF0;
410 /* Get the first line if we have some portion of an SAV/EAV from
411 the last buffer or a partial line */
412 if (sav_eav) {
413 bytes_parsed += cx231xx_get_video_line(dev, dma_q,
414 sav_eav, /* SAV/EAV */
415 p_buffer + bytes_parsed, /* p_buffer */
416 buffer_size - bytes_parsed);/* buf size */
417 }
418
419 /* Now parse data that is completely in this buffer */
420 /* dma_q->is_partial_line = 0; */
421
422 while (bytes_parsed < buffer_size) {
423 u32 bytes_used = 0;
424
425 sav_eav = cx231xx_find_next_SAV_EAV(
426 p_buffer + bytes_parsed, /* p_buffer */
427 buffer_size - bytes_parsed, /* buf size */
428 &bytes_used);/* bytes used to get SAV/EAV */
429
430 bytes_parsed += bytes_used;
431
432 sav_eav &= 0xF0;
433 if (sav_eav && (bytes_parsed < buffer_size)) {
434 bytes_parsed += cx231xx_get_video_line(dev,
435 dma_q, sav_eav, /* SAV/EAV */
436 p_buffer + bytes_parsed,/* p_buffer */
437 buffer_size - bytes_parsed);/*buf size*/
438 }
439 }
440
441 /* Save the last four bytes of the buffer so we can check the
442 buffer boundary condition next time */
443 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
444 bytes_parsed = 0;
445
446 }
447 return 1;
448 }
449
450
451 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
452 u32 *p_bytes_used)
453 {
454 u32 bytes_used;
455 u8 boundary_bytes[8];
456 u8 sav_eav = 0;
457
458 *p_bytes_used = 0;
459
460 /* Create an array of the last 4 bytes of the last buffer and the first
461 4 bytes of the current buffer. */
462
463 memcpy(boundary_bytes, partial_buf, 4);
464 memcpy(boundary_bytes + 4, p_buffer, 4);
465
466 /* Check for the SAV/EAV in the boundary buffer */
467 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
468 &bytes_used);
469
470 if (sav_eav) {
471 /* found a boundary SAV/EAV. Updates the bytes used to reflect
472 only those used in the new buffer */
473 *p_bytes_used = bytes_used - 4;
474 }
475
476 return sav_eav;
477 }
478
479 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
480 {
481 u32 i;
482 u8 sav_eav = 0;
483
484 /*
485 * Don't search if the buffer size is less than 4. It causes a page
486 * fault since buffer_size - 4 evaluates to a large number in that
487 * case.
488 */
489 if (buffer_size < 4) {
490 *p_bytes_used = buffer_size;
491 return 0;
492 }
493
494 for (i = 0; i < (buffer_size - 3); i++) {
495
496 if ((p_buffer[i] == 0xFF) &&
497 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
498
499 *p_bytes_used = i + 4;
500 sav_eav = p_buffer[i + 3];
501 return sav_eav;
502 }
503 }
504
505 *p_bytes_used = buffer_size;
506 return 0;
507 }
508
509 u32 cx231xx_get_video_line(struct cx231xx *dev,
510 struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
511 u8 *p_buffer, u32 buffer_size)
512 {
513 u32 bytes_copied = 0;
514 int current_field = -1;
515
516 switch (sav_eav) {
517 case SAV_ACTIVE_VIDEO_FIELD1:
518 /* looking for skipped line which occurred in PAL 720x480 mode.
519 In this case, there will be no active data contained
520 between the SAV and EAV */
521 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
522 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
523 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
524 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
525 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
526 (p_buffer[3] == EAV_VBLANK_FIELD2)))
527 return bytes_copied;
528 current_field = 1;
529 break;
530
531 case SAV_ACTIVE_VIDEO_FIELD2:
532 /* looking for skipped line which occurred in PAL 720x480 mode.
533 In this case, there will be no active data contained between
534 the SAV and EAV */
535 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
536 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
537 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
538 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
539 (p_buffer[3] == EAV_VBLANK_FIELD1) ||
540 (p_buffer[3] == EAV_VBLANK_FIELD2)))
541 return bytes_copied;
542 current_field = 2;
543 break;
544 }
545
546 dma_q->last_sav = sav_eav;
547
548 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
549 buffer_size, current_field);
550
551 return bytes_copied;
552 }
553
554 u32 cx231xx_copy_video_line(struct cx231xx *dev,
555 struct cx231xx_dmaqueue *dma_q, u8 *p_line,
556 u32 length, int field_number)
557 {
558 u32 bytes_to_copy;
559 struct cx231xx_buffer *buf;
560 u32 _line_size = dev->width * 2;
561
562 if (dma_q->current_field != field_number)
563 cx231xx_reset_video_buffer(dev, dma_q);
564
565 /* get the buffer pointer */
566 if (dev->USE_ISO)
567 buf = dev->video_mode.isoc_ctl.buf;
568 else
569 buf = dev->video_mode.bulk_ctl.buf;
570
571 /* Remember the field number for next time */
572 dma_q->current_field = field_number;
573
574 bytes_to_copy = dma_q->bytes_left_in_line;
575 if (bytes_to_copy > length)
576 bytes_to_copy = length;
577
578 if (dma_q->lines_completed >= dma_q->lines_per_field) {
579 dma_q->bytes_left_in_line -= bytes_to_copy;
580 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
581 0 : 1;
582 return 0;
583 }
584
585 dma_q->is_partial_line = 1;
586
587 /* If we don't have a buffer, just return the number of bytes we would
588 have copied if we had a buffer. */
589 if (!buf) {
590 dma_q->bytes_left_in_line -= bytes_to_copy;
591 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
592 ? 0 : 1;
593 return bytes_to_copy;
594 }
595
596 /* copy the data to video buffer */
597 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
598
599 dma_q->pos += bytes_to_copy;
600 dma_q->bytes_left_in_line -= bytes_to_copy;
601
602 if (dma_q->bytes_left_in_line == 0) {
603 dma_q->bytes_left_in_line = _line_size;
604 dma_q->lines_completed++;
605 dma_q->is_partial_line = 0;
606
607 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
608 buffer_filled(dev, dma_q, buf);
609
610 dma_q->pos = 0;
611 buf = NULL;
612 dma_q->lines_completed = 0;
613 }
614 }
615
616 return bytes_to_copy;
617 }
618
619 void cx231xx_reset_video_buffer(struct cx231xx *dev,
620 struct cx231xx_dmaqueue *dma_q)
621 {
622 struct cx231xx_buffer *buf;
623
624 /* handle the switch from field 1 to field 2 */
625 if (dma_q->current_field == 1) {
626 if (dma_q->lines_completed >= dma_q->lines_per_field)
627 dma_q->field1_done = 1;
628 else
629 dma_q->field1_done = 0;
630 }
631
632 if (dev->USE_ISO)
633 buf = dev->video_mode.isoc_ctl.buf;
634 else
635 buf = dev->video_mode.bulk_ctl.buf;
636
637 if (buf == NULL) {
638 /* first try to get the buffer */
639 get_next_buf(dma_q, &buf);
640
641 dma_q->pos = 0;
642 dma_q->field1_done = 0;
643 dma_q->current_field = -1;
644 }
645
646 /* reset the counters */
647 dma_q->bytes_left_in_line = dev->width << 1;
648 dma_q->lines_completed = 0;
649 }
650
651 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
652 u8 *p_buffer, u32 bytes_to_copy)
653 {
654 u8 *p_out_buffer = NULL;
655 u32 current_line_bytes_copied = 0;
656 struct cx231xx_buffer *buf;
657 u32 _line_size = dev->width << 1;
658 void *startwrite;
659 int offset, lencopy;
660
661 if (dev->USE_ISO)
662 buf = dev->video_mode.isoc_ctl.buf;
663 else
664 buf = dev->video_mode.bulk_ctl.buf;
665
666 if (buf == NULL)
667 return -1;
668
669 p_out_buffer = videobuf_to_vmalloc(&buf->vb);
670
671 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
672
673 /* Offset field 2 one line from the top of the buffer */
674 offset = (dma_q->current_field == 1) ? 0 : _line_size;
675
676 /* Offset for field 2 */
677 startwrite = p_out_buffer + offset;
678
679 /* lines already completed in the current field */
680 startwrite += (dma_q->lines_completed * _line_size * 2);
681
682 /* bytes already completed in the current line */
683 startwrite += current_line_bytes_copied;
684
685 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
686 bytes_to_copy : dma_q->bytes_left_in_line;
687
688 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
689 return 0;
690
691 /* The below copies the UYVY data straight into video buffer */
692 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
693
694 return 0;
695 }
696
697 void cx231xx_swab(u16 *from, u16 *to, u16 len)
698 {
699 u16 i;
700
701 if (len <= 0)
702 return;
703
704 for (i = 0; i < len / 2; i++)
705 to[i] = (from[i] << 8) | (from[i] >> 8);
706 }
707
708 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
709 {
710 u8 buffer_complete = 0;
711
712 /* Dual field stream */
713 buffer_complete = ((dma_q->current_field == 2) &&
714 (dma_q->lines_completed >= dma_q->lines_per_field) &&
715 dma_q->field1_done);
716
717 return buffer_complete;
718 }
719
720 /* ------------------------------------------------------------------
721 Videobuf operations
722 ------------------------------------------------------------------*/
723
724 static int
725 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
726 {
727 struct cx231xx_fh *fh = vq->priv_data;
728 struct cx231xx *dev = fh->dev;
729
730 *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
731 if (0 == *count)
732 *count = CX231XX_DEF_BUF;
733
734 if (*count < CX231XX_MIN_BUF)
735 *count = CX231XX_MIN_BUF;
736
737
738 cx231xx_enable_analog_tuner(dev);
739
740 return 0;
741 }
742
743 /* This is called *without* dev->slock held; please keep it that way */
744 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
745 {
746 struct cx231xx_fh *fh = vq->priv_data;
747 struct cx231xx *dev = fh->dev;
748 unsigned long flags = 0;
749
750 BUG_ON(in_interrupt());
751
752 /* We used to wait for the buffer to finish here, but this didn't work
753 because, as we were keeping the state as VIDEOBUF_QUEUED,
754 videobuf_queue_cancel marked it as finished for us.
755 (Also, it could wedge forever if the hardware was misconfigured.)
756
757 This should be safe; by the time we get here, the buffer isn't
758 queued anymore. If we ever start marking the buffers as
759 VIDEOBUF_ACTIVE, it won't be, though.
760 */
761 spin_lock_irqsave(&dev->video_mode.slock, flags);
762 if (dev->USE_ISO) {
763 if (dev->video_mode.isoc_ctl.buf == buf)
764 dev->video_mode.isoc_ctl.buf = NULL;
765 } else {
766 if (dev->video_mode.bulk_ctl.buf == buf)
767 dev->video_mode.bulk_ctl.buf = NULL;
768 }
769 spin_unlock_irqrestore(&dev->video_mode.slock, flags);
770
771 videobuf_vmalloc_free(&buf->vb);
772 buf->vb.state = VIDEOBUF_NEEDS_INIT;
773 }
774
775 static int
776 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
777 enum v4l2_field field)
778 {
779 struct cx231xx_fh *fh = vq->priv_data;
780 struct cx231xx_buffer *buf =
781 container_of(vb, struct cx231xx_buffer, vb);
782 struct cx231xx *dev = fh->dev;
783 int rc = 0, urb_init = 0;
784
785 /* The only currently supported format is 16 bits/pixel */
786 buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
787 + 7) >> 3;
788 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
789 return -EINVAL;
790
791 buf->vb.width = dev->width;
792 buf->vb.height = dev->height;
793 buf->vb.field = field;
794
795 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
796 rc = videobuf_iolock(vq, &buf->vb, NULL);
797 if (rc < 0)
798 goto fail;
799 }
800
801 if (dev->USE_ISO) {
802 if (!dev->video_mode.isoc_ctl.num_bufs)
803 urb_init = 1;
804 } else {
805 if (!dev->video_mode.bulk_ctl.num_bufs)
806 urb_init = 1;
807 }
808 dev_dbg(dev->dev,
809 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
810 urb_init, dev->video_mode.max_pkt_size);
811 if (urb_init) {
812 dev->mode_tv = 0;
813 if (dev->USE_ISO)
814 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
815 CX231XX_NUM_BUFS,
816 dev->video_mode.max_pkt_size,
817 cx231xx_isoc_copy);
818 else
819 rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
820 CX231XX_NUM_BUFS,
821 dev->video_mode.max_pkt_size,
822 cx231xx_bulk_copy);
823 if (rc < 0)
824 goto fail;
825 }
826
827 buf->vb.state = VIDEOBUF_PREPARED;
828
829 return 0;
830
831 fail:
832 free_buffer(vq, buf);
833 return rc;
834 }
835
836 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
837 {
838 struct cx231xx_buffer *buf =
839 container_of(vb, struct cx231xx_buffer, vb);
840 struct cx231xx_fh *fh = vq->priv_data;
841 struct cx231xx *dev = fh->dev;
842 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
843
844 buf->vb.state = VIDEOBUF_QUEUED;
845 list_add_tail(&buf->vb.queue, &vidq->active);
846
847 }
848
849 static void buffer_release(struct videobuf_queue *vq,
850 struct videobuf_buffer *vb)
851 {
852 struct cx231xx_buffer *buf =
853 container_of(vb, struct cx231xx_buffer, vb);
854 struct cx231xx_fh *fh = vq->priv_data;
855 struct cx231xx *dev = (struct cx231xx *)fh->dev;
856
857 cx231xx_isocdbg("cx231xx: called buffer_release\n");
858
859 free_buffer(vq, buf);
860 }
861
862 static struct videobuf_queue_ops cx231xx_video_qops = {
863 .buf_setup = buffer_setup,
864 .buf_prepare = buffer_prepare,
865 .buf_queue = buffer_queue,
866 .buf_release = buffer_release,
867 };
868
869 /********************* v4l2 interface **************************************/
870
871 void video_mux(struct cx231xx *dev, int index)
872 {
873 dev->video_input = index;
874 dev->ctl_ainput = INPUT(index)->amux;
875
876 cx231xx_set_video_input_mux(dev, index);
877
878 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
879
880 cx231xx_set_audio_input(dev, dev->ctl_ainput);
881
882 dev_dbg(dev->dev, "video_mux : %d\n", index);
883
884 /* do mode control overrides if required */
885 cx231xx_do_mode_ctrl_overrides(dev);
886 }
887
888 /* Usage lock check functions */
889 static int res_get(struct cx231xx_fh *fh)
890 {
891 struct cx231xx *dev = fh->dev;
892 int rc = 0;
893
894 /* This instance already has stream_on */
895 if (fh->stream_on)
896 return rc;
897
898 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
899 if (dev->stream_on)
900 return -EBUSY;
901 dev->stream_on = 1;
902 } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
903 if (dev->vbi_stream_on)
904 return -EBUSY;
905 dev->vbi_stream_on = 1;
906 } else
907 return -EINVAL;
908
909 fh->stream_on = 1;
910
911 return rc;
912 }
913
914 static int res_check(struct cx231xx_fh *fh)
915 {
916 return fh->stream_on;
917 }
918
919 static void res_free(struct cx231xx_fh *fh)
920 {
921 struct cx231xx *dev = fh->dev;
922
923 fh->stream_on = 0;
924
925 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
926 dev->stream_on = 0;
927 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
928 dev->vbi_stream_on = 0;
929 }
930
931 static int check_dev(struct cx231xx *dev)
932 {
933 if (dev->state & DEV_DISCONNECTED) {
934 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
935 return -ENODEV;
936 }
937 return 0;
938 }
939
940 /* ------------------------------------------------------------------
941 IOCTL vidioc handling
942 ------------------------------------------------------------------*/
943
944 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
945 struct v4l2_format *f)
946 {
947 struct cx231xx_fh *fh = priv;
948 struct cx231xx *dev = fh->dev;
949
950 f->fmt.pix.width = dev->width;
951 f->fmt.pix.height = dev->height;
952 f->fmt.pix.pixelformat = dev->format->fourcc;
953 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
954 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
955 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
956
957 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
958
959 return 0;
960 }
961
962 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
963 {
964 unsigned int i;
965
966 for (i = 0; i < ARRAY_SIZE(format); i++)
967 if (format[i].fourcc == fourcc)
968 return &format[i];
969
970 return NULL;
971 }
972
973 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
974 struct v4l2_format *f)
975 {
976 struct cx231xx_fh *fh = priv;
977 struct cx231xx *dev = fh->dev;
978 unsigned int width = f->fmt.pix.width;
979 unsigned int height = f->fmt.pix.height;
980 unsigned int maxw = norm_maxw(dev);
981 unsigned int maxh = norm_maxh(dev);
982 struct cx231xx_fmt *fmt;
983
984 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
985 if (!fmt) {
986 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
987 f->fmt.pix.pixelformat);
988 return -EINVAL;
989 }
990
991 /* width must even because of the YUYV format
992 height must be even because of interlacing */
993 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
994
995 f->fmt.pix.width = width;
996 f->fmt.pix.height = height;
997 f->fmt.pix.pixelformat = fmt->fourcc;
998 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
999 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1000 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1001 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1002
1003 return 0;
1004 }
1005
1006 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1007 struct v4l2_format *f)
1008 {
1009 struct cx231xx_fh *fh = priv;
1010 struct cx231xx *dev = fh->dev;
1011 int rc;
1012 struct cx231xx_fmt *fmt;
1013 struct v4l2_subdev_format format = {
1014 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1015 };
1016
1017 rc = check_dev(dev);
1018 if (rc < 0)
1019 return rc;
1020
1021 vidioc_try_fmt_vid_cap(file, priv, f);
1022
1023 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1024 if (!fmt)
1025 return -EINVAL;
1026
1027 if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1028 dev_err(dev->dev, "%s: queue busy\n", __func__);
1029 return -EBUSY;
1030 }
1031
1032 if (dev->stream_on && !fh->stream_on) {
1033 dev_err(dev->dev,
1034 "%s: device in use by another fh\n", __func__);
1035 return -EBUSY;
1036 }
1037
1038 /* set new image size */
1039 dev->width = f->fmt.pix.width;
1040 dev->height = f->fmt.pix.height;
1041 dev->format = fmt;
1042
1043 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1044 call_all(dev, pad, set_fmt, NULL, &format);
1045 v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1046
1047 return rc;
1048 }
1049
1050 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1051 {
1052 struct cx231xx_fh *fh = priv;
1053 struct cx231xx *dev = fh->dev;
1054
1055 *id = dev->norm;
1056 return 0;
1057 }
1058
1059 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1060 {
1061 struct cx231xx_fh *fh = priv;
1062 struct cx231xx *dev = fh->dev;
1063 struct v4l2_subdev_format format = {
1064 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1065 };
1066 int rc;
1067
1068 rc = check_dev(dev);
1069 if (rc < 0)
1070 return rc;
1071
1072 if (dev->norm == norm)
1073 return 0;
1074
1075 if (videobuf_queue_is_busy(&fh->vb_vidq))
1076 return -EBUSY;
1077
1078 dev->norm = norm;
1079
1080 /* Adjusts width/height, if needed */
1081 dev->width = 720;
1082 dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1083
1084 call_all(dev, video, s_std, dev->norm);
1085
1086 /* We need to reset basic properties in the decoder related to
1087 resolution (since a standard change effects things like the number
1088 of lines in VACT, etc) */
1089 format.format.code = MEDIA_BUS_FMT_FIXED;
1090 format.format.width = dev->width;
1091 format.format.height = dev->height;
1092 call_all(dev, pad, set_fmt, NULL, &format);
1093
1094 /* do mode control overrides */
1095 cx231xx_do_mode_ctrl_overrides(dev);
1096
1097 return 0;
1098 }
1099
1100 static const char *iname[] = {
1101 [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1102 [CX231XX_VMUX_SVIDEO] = "S-Video",
1103 [CX231XX_VMUX_TELEVISION] = "Television",
1104 [CX231XX_VMUX_CABLE] = "Cable TV",
1105 [CX231XX_VMUX_DVB] = "DVB",
1106 };
1107
1108 void cx231xx_v4l2_create_entities(struct cx231xx *dev)
1109 {
1110 #if defined(CONFIG_MEDIA_CONTROLLER)
1111 int ret, i;
1112
1113 /* Create entities for each input connector */
1114 for (i = 0; i < MAX_CX231XX_INPUT; i++) {
1115 struct media_entity *ent = &dev->input_ent[i];
1116
1117 if (!INPUT(i)->type)
1118 break;
1119
1120 ent->name = iname[INPUT(i)->type];
1121 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1122 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1123
1124 switch (INPUT(i)->type) {
1125 case CX231XX_VMUX_COMPOSITE1:
1126 ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1127 break;
1128 case CX231XX_VMUX_SVIDEO:
1129 ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1130 break;
1131 case CX231XX_VMUX_TELEVISION:
1132 case CX231XX_VMUX_CABLE:
1133 case CX231XX_VMUX_DVB:
1134 /* The DVB core will handle it */
1135 if (dev->tuner_type == TUNER_ABSENT)
1136 continue;
1137 /* fall though */
1138 default: /* just to shut up a gcc warning */
1139 ent->function = MEDIA_ENT_F_CONN_RF;
1140 break;
1141 }
1142
1143 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1144 if (ret < 0)
1145 pr_err("failed to initialize input pad[%d]!\n", i);
1146
1147 ret = media_device_register_entity(dev->media_dev, ent);
1148 if (ret < 0)
1149 pr_err("failed to register input entity %d!\n", i);
1150 }
1151 #endif
1152 }
1153
1154 int cx231xx_enum_input(struct file *file, void *priv,
1155 struct v4l2_input *i)
1156 {
1157 struct cx231xx_fh *fh = priv;
1158 struct cx231xx *dev = fh->dev;
1159 u32 gen_stat;
1160 unsigned int n;
1161 int ret;
1162
1163 n = i->index;
1164 if (n >= MAX_CX231XX_INPUT)
1165 return -EINVAL;
1166 if (0 == INPUT(n)->type)
1167 return -EINVAL;
1168
1169 i->index = n;
1170 i->type = V4L2_INPUT_TYPE_CAMERA;
1171
1172 strcpy(i->name, iname[INPUT(n)->type]);
1173
1174 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1175 (CX231XX_VMUX_CABLE == INPUT(n)->type))
1176 i->type = V4L2_INPUT_TYPE_TUNER;
1177
1178 i->std = dev->vdev.tvnorms;
1179
1180 /* If they are asking about the active input, read signal status */
1181 if (n == dev->video_input) {
1182 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1183 GEN_STAT, 2, &gen_stat, 4);
1184 if (ret > 0) {
1185 if ((gen_stat & FLD_VPRES) == 0x00)
1186 i->status |= V4L2_IN_ST_NO_SIGNAL;
1187 if ((gen_stat & FLD_HLOCK) == 0x00)
1188 i->status |= V4L2_IN_ST_NO_H_LOCK;
1189 }
1190 }
1191
1192 return 0;
1193 }
1194
1195 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1196 {
1197 struct cx231xx_fh *fh = priv;
1198 struct cx231xx *dev = fh->dev;
1199
1200 *i = dev->video_input;
1201
1202 return 0;
1203 }
1204
1205 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1206 {
1207 struct cx231xx_fh *fh = priv;
1208 struct cx231xx *dev = fh->dev;
1209 int rc;
1210
1211 dev->mode_tv = 0;
1212 rc = check_dev(dev);
1213 if (rc < 0)
1214 return rc;
1215
1216 if (i >= MAX_CX231XX_INPUT)
1217 return -EINVAL;
1218 if (0 == INPUT(i)->type)
1219 return -EINVAL;
1220
1221 video_mux(dev, i);
1222
1223 if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1224 INPUT(i)->type == CX231XX_VMUX_CABLE) {
1225 /* There's a tuner, so reset the standard and put it on the
1226 last known frequency (since it was probably powered down
1227 until now */
1228 call_all(dev, video, s_std, dev->norm);
1229 }
1230
1231 return 0;
1232 }
1233
1234 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1235 {
1236 struct cx231xx_fh *fh = priv;
1237 struct cx231xx *dev = fh->dev;
1238 int rc;
1239
1240 rc = check_dev(dev);
1241 if (rc < 0)
1242 return rc;
1243
1244 if (0 != t->index)
1245 return -EINVAL;
1246
1247 strcpy(t->name, "Tuner");
1248
1249 t->type = V4L2_TUNER_ANALOG_TV;
1250 t->capability = V4L2_TUNER_CAP_NORM;
1251 t->rangehigh = 0xffffffffUL;
1252 t->signal = 0xffff; /* LOCKED */
1253 call_all(dev, tuner, g_tuner, t);
1254
1255 return 0;
1256 }
1257
1258 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1259 {
1260 struct cx231xx_fh *fh = priv;
1261 struct cx231xx *dev = fh->dev;
1262 int rc;
1263
1264 rc = check_dev(dev);
1265 if (rc < 0)
1266 return rc;
1267
1268 if (0 != t->index)
1269 return -EINVAL;
1270 #if 0
1271 call_all(dev, tuner, s_tuner, t);
1272 #endif
1273 return 0;
1274 }
1275
1276 int cx231xx_g_frequency(struct file *file, void *priv,
1277 struct v4l2_frequency *f)
1278 {
1279 struct cx231xx_fh *fh = priv;
1280 struct cx231xx *dev = fh->dev;
1281
1282 if (f->tuner)
1283 return -EINVAL;
1284
1285 f->frequency = dev->ctl_freq;
1286
1287 return 0;
1288 }
1289
1290 int cx231xx_s_frequency(struct file *file, void *priv,
1291 const struct v4l2_frequency *f)
1292 {
1293 struct cx231xx_fh *fh = priv;
1294 struct cx231xx *dev = fh->dev;
1295 struct v4l2_frequency new_freq = *f;
1296 int rc;
1297 u32 if_frequency = 5400000;
1298
1299 dev_dbg(dev->dev,
1300 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1301 f->frequency, f->type);
1302
1303 rc = check_dev(dev);
1304 if (rc < 0)
1305 return rc;
1306
1307 if (0 != f->tuner)
1308 return -EINVAL;
1309
1310 /* set pre channel change settings in DIF first */
1311 rc = cx231xx_tuner_pre_channel_change(dev);
1312
1313 call_all(dev, tuner, s_frequency, f);
1314 call_all(dev, tuner, g_frequency, &new_freq);
1315 dev->ctl_freq = new_freq.frequency;
1316
1317 /* set post channel change settings in DIF first */
1318 rc = cx231xx_tuner_post_channel_change(dev);
1319
1320 if (dev->tuner_type == TUNER_NXP_TDA18271) {
1321 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1322 if_frequency = 5400000; /*5.4MHz */
1323 else if (dev->norm & V4L2_STD_B)
1324 if_frequency = 6000000; /*6.0MHz */
1325 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1326 if_frequency = 6900000; /*6.9MHz */
1327 else if (dev->norm & V4L2_STD_GH)
1328 if_frequency = 7100000; /*7.1MHz */
1329 else if (dev->norm & V4L2_STD_PAL_I)
1330 if_frequency = 7250000; /*7.25MHz */
1331 else if (dev->norm & V4L2_STD_SECAM_L)
1332 if_frequency = 6900000; /*6.9MHz */
1333 else if (dev->norm & V4L2_STD_SECAM_LC)
1334 if_frequency = 1250000; /*1.25MHz */
1335
1336 dev_dbg(dev->dev,
1337 "if_frequency is set to %d\n", if_frequency);
1338 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1339
1340 update_HH_register_after_set_DIF(dev);
1341 }
1342
1343 dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1344
1345 return rc;
1346 }
1347
1348 #ifdef CONFIG_VIDEO_ADV_DEBUG
1349
1350 int cx231xx_g_chip_info(struct file *file, void *fh,
1351 struct v4l2_dbg_chip_info *chip)
1352 {
1353 switch (chip->match.addr) {
1354 case 0: /* Cx231xx - internal registers */
1355 return 0;
1356 case 1: /* AFE - read byte */
1357 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1358 return 0;
1359 case 2: /* Video Block - read byte */
1360 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1361 return 0;
1362 case 3: /* I2S block - read byte */
1363 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1364 return 0;
1365 case 4: /* AFE - read dword */
1366 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1367 return 0;
1368 case 5: /* Video Block - read dword */
1369 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1370 return 0;
1371 case 6: /* I2S Block - read dword */
1372 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1373 return 0;
1374 }
1375 return -EINVAL;
1376 }
1377
1378 int cx231xx_g_register(struct file *file, void *priv,
1379 struct v4l2_dbg_register *reg)
1380 {
1381 struct cx231xx_fh *fh = priv;
1382 struct cx231xx *dev = fh->dev;
1383 int ret;
1384 u8 value[4] = { 0, 0, 0, 0 };
1385 u32 data = 0;
1386
1387 switch (reg->match.addr) {
1388 case 0: /* Cx231xx - internal registers */
1389 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1390 (u16)reg->reg, value, 4);
1391 reg->val = value[0] | value[1] << 8 |
1392 value[2] << 16 | value[3] << 24;
1393 reg->size = 4;
1394 break;
1395 case 1: /* AFE - read byte */
1396 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1397 (u16)reg->reg, 2, &data, 1);
1398 reg->val = data;
1399 reg->size = 1;
1400 break;
1401 case 2: /* Video Block - read byte */
1402 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1403 (u16)reg->reg, 2, &data, 1);
1404 reg->val = data;
1405 reg->size = 1;
1406 break;
1407 case 3: /* I2S block - read byte */
1408 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1409 (u16)reg->reg, 1, &data, 1);
1410 reg->val = data;
1411 reg->size = 1;
1412 break;
1413 case 4: /* AFE - read dword */
1414 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1415 (u16)reg->reg, 2, &data, 4);
1416 reg->val = data;
1417 reg->size = 4;
1418 break;
1419 case 5: /* Video Block - read dword */
1420 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1421 (u16)reg->reg, 2, &data, 4);
1422 reg->val = data;
1423 reg->size = 4;
1424 break;
1425 case 6: /* I2S Block - read dword */
1426 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1427 (u16)reg->reg, 1, &data, 4);
1428 reg->val = data;
1429 reg->size = 4;
1430 break;
1431 default:
1432 return -EINVAL;
1433 }
1434 return ret < 0 ? ret : 0;
1435 }
1436
1437 int cx231xx_s_register(struct file *file, void *priv,
1438 const struct v4l2_dbg_register *reg)
1439 {
1440 struct cx231xx_fh *fh = priv;
1441 struct cx231xx *dev = fh->dev;
1442 int ret;
1443 u8 data[4] = { 0, 0, 0, 0 };
1444
1445 switch (reg->match.addr) {
1446 case 0: /* cx231xx internal registers */
1447 data[0] = (u8) reg->val;
1448 data[1] = (u8) (reg->val >> 8);
1449 data[2] = (u8) (reg->val >> 16);
1450 data[3] = (u8) (reg->val >> 24);
1451 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1452 (u16)reg->reg, data, 4);
1453 break;
1454 case 1: /* AFE - write byte */
1455 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1456 (u16)reg->reg, 2, reg->val, 1);
1457 break;
1458 case 2: /* Video Block - write byte */
1459 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1460 (u16)reg->reg, 2, reg->val, 1);
1461 break;
1462 case 3: /* I2S block - write byte */
1463 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1464 (u16)reg->reg, 1, reg->val, 1);
1465 break;
1466 case 4: /* AFE - write dword */
1467 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1468 (u16)reg->reg, 2, reg->val, 4);
1469 break;
1470 case 5: /* Video Block - write dword */
1471 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1472 (u16)reg->reg, 2, reg->val, 4);
1473 break;
1474 case 6: /* I2S block - write dword */
1475 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1476 (u16)reg->reg, 1, reg->val, 4);
1477 break;
1478 default:
1479 return -EINVAL;
1480 }
1481 return ret < 0 ? ret : 0;
1482 }
1483 #endif
1484
1485 static int vidioc_cropcap(struct file *file, void *priv,
1486 struct v4l2_cropcap *cc)
1487 {
1488 struct cx231xx_fh *fh = priv;
1489 struct cx231xx *dev = fh->dev;
1490 bool is_50hz = dev->norm & V4L2_STD_625_50;
1491
1492 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1493 return -EINVAL;
1494
1495 cc->bounds.left = 0;
1496 cc->bounds.top = 0;
1497 cc->bounds.width = dev->width;
1498 cc->bounds.height = dev->height;
1499 cc->defrect = cc->bounds;
1500 cc->pixelaspect.numerator = is_50hz ? 54 : 11;
1501 cc->pixelaspect.denominator = is_50hz ? 59 : 10;
1502
1503 return 0;
1504 }
1505
1506 static int vidioc_streamon(struct file *file, void *priv,
1507 enum v4l2_buf_type type)
1508 {
1509 struct cx231xx_fh *fh = priv;
1510 struct cx231xx *dev = fh->dev;
1511 int rc;
1512
1513 rc = check_dev(dev);
1514 if (rc < 0)
1515 return rc;
1516
1517 rc = res_get(fh);
1518
1519 if (likely(rc >= 0))
1520 rc = videobuf_streamon(&fh->vb_vidq);
1521
1522 call_all(dev, video, s_stream, 1);
1523
1524 return rc;
1525 }
1526
1527 static int vidioc_streamoff(struct file *file, void *priv,
1528 enum v4l2_buf_type type)
1529 {
1530 struct cx231xx_fh *fh = priv;
1531 struct cx231xx *dev = fh->dev;
1532 int rc;
1533
1534 rc = check_dev(dev);
1535 if (rc < 0)
1536 return rc;
1537
1538 if (type != fh->type)
1539 return -EINVAL;
1540
1541 cx25840_call(dev, video, s_stream, 0);
1542
1543 videobuf_streamoff(&fh->vb_vidq);
1544 res_free(fh);
1545
1546 return 0;
1547 }
1548
1549 int cx231xx_querycap(struct file *file, void *priv,
1550 struct v4l2_capability *cap)
1551 {
1552 struct video_device *vdev = video_devdata(file);
1553 struct cx231xx_fh *fh = priv;
1554 struct cx231xx *dev = fh->dev;
1555
1556 strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1557 strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1558 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1559
1560 if (vdev->vfl_type == VFL_TYPE_RADIO)
1561 cap->device_caps = V4L2_CAP_RADIO;
1562 else {
1563 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1564 if (vdev->vfl_type == VFL_TYPE_VBI)
1565 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1566 else
1567 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1568 }
1569 if (dev->tuner_type != TUNER_ABSENT)
1570 cap->device_caps |= V4L2_CAP_TUNER;
1571 cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1572 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1573 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1574 if (video_is_registered(&dev->radio_dev))
1575 cap->capabilities |= V4L2_CAP_RADIO;
1576
1577 return 0;
1578 }
1579
1580 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1581 struct v4l2_fmtdesc *f)
1582 {
1583 if (unlikely(f->index >= ARRAY_SIZE(format)))
1584 return -EINVAL;
1585
1586 strlcpy(f->description, format[f->index].name, sizeof(f->description));
1587 f->pixelformat = format[f->index].fourcc;
1588
1589 return 0;
1590 }
1591
1592 /* RAW VBI ioctls */
1593
1594 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1595 struct v4l2_format *f)
1596 {
1597 struct cx231xx_fh *fh = priv;
1598 struct cx231xx *dev = fh->dev;
1599
1600 f->fmt.vbi.sampling_rate = 6750000 * 4;
1601 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1602 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1603 f->fmt.vbi.offset = 0;
1604 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1605 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1606 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1607 PAL_VBI_LINES : NTSC_VBI_LINES;
1608 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1609 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1610 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1611 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1612
1613 return 0;
1614
1615 }
1616
1617 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1618 struct v4l2_format *f)
1619 {
1620 struct cx231xx_fh *fh = priv;
1621 struct cx231xx *dev = fh->dev;
1622
1623 f->fmt.vbi.sampling_rate = 6750000 * 4;
1624 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1625 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1626 f->fmt.vbi.offset = 0;
1627 f->fmt.vbi.flags = 0;
1628 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1629 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1630 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1631 PAL_VBI_LINES : NTSC_VBI_LINES;
1632 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1633 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1634 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1635 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1636
1637 return 0;
1638
1639 }
1640
1641 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1642 struct v4l2_format *f)
1643 {
1644 struct cx231xx_fh *fh = priv;
1645 struct cx231xx *dev = fh->dev;
1646
1647 if (dev->vbi_stream_on && !fh->stream_on) {
1648 dev_err(dev->dev,
1649 "%s device in use by another fh\n", __func__);
1650 return -EBUSY;
1651 }
1652 return vidioc_try_fmt_vbi_cap(file, priv, f);
1653 }
1654
1655 static int vidioc_reqbufs(struct file *file, void *priv,
1656 struct v4l2_requestbuffers *rb)
1657 {
1658 struct cx231xx_fh *fh = priv;
1659 struct cx231xx *dev = fh->dev;
1660 int rc;
1661
1662 rc = check_dev(dev);
1663 if (rc < 0)
1664 return rc;
1665
1666 return videobuf_reqbufs(&fh->vb_vidq, rb);
1667 }
1668
1669 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1670 {
1671 struct cx231xx_fh *fh = priv;
1672 struct cx231xx *dev = fh->dev;
1673 int rc;
1674
1675 rc = check_dev(dev);
1676 if (rc < 0)
1677 return rc;
1678
1679 return videobuf_querybuf(&fh->vb_vidq, b);
1680 }
1681
1682 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
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 return videobuf_qbuf(&fh->vb_vidq, b);
1693 }
1694
1695 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1696 {
1697 struct cx231xx_fh *fh = priv;
1698 struct cx231xx *dev = fh->dev;
1699 int rc;
1700
1701 rc = check_dev(dev);
1702 if (rc < 0)
1703 return rc;
1704
1705 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1706 }
1707
1708 /* ----------------------------------------------------------- */
1709 /* RADIO ESPECIFIC IOCTLS */
1710 /* ----------------------------------------------------------- */
1711
1712 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1713 {
1714 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1715
1716 if (t->index)
1717 return -EINVAL;
1718
1719 strcpy(t->name, "Radio");
1720
1721 call_all(dev, tuner, g_tuner, t);
1722
1723 return 0;
1724 }
1725 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1726 {
1727 struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1728
1729 if (t->index)
1730 return -EINVAL;
1731
1732 call_all(dev, tuner, s_tuner, t);
1733
1734 return 0;
1735 }
1736
1737 /*
1738 * cx231xx_v4l2_open()
1739 * inits the device and starts isoc transfer
1740 */
1741 static int cx231xx_v4l2_open(struct file *filp)
1742 {
1743 int radio = 0;
1744 struct video_device *vdev = video_devdata(filp);
1745 struct cx231xx *dev = video_drvdata(filp);
1746 struct cx231xx_fh *fh;
1747 enum v4l2_buf_type fh_type = 0;
1748
1749 switch (vdev->vfl_type) {
1750 case VFL_TYPE_GRABBER:
1751 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1752 break;
1753 case VFL_TYPE_VBI:
1754 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1755 break;
1756 case VFL_TYPE_RADIO:
1757 radio = 1;
1758 break;
1759 }
1760
1761 cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1762 video_device_node_name(vdev), v4l2_type_names[fh_type],
1763 dev->users);
1764
1765 #if 0
1766 errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1767 if (errCode < 0) {
1768 dev_err(dev->dev,
1769 "Device locked on digital mode. Can't open analog\n");
1770 return -EBUSY;
1771 }
1772 #endif
1773
1774 fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1775 if (!fh)
1776 return -ENOMEM;
1777 if (mutex_lock_interruptible(&dev->lock)) {
1778 kfree(fh);
1779 return -ERESTARTSYS;
1780 }
1781 fh->dev = dev;
1782 fh->type = fh_type;
1783 filp->private_data = fh;
1784 v4l2_fh_init(&fh->fh, vdev);
1785
1786 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1787 /* Power up in Analog TV mode */
1788 if (dev->board.external_av)
1789 cx231xx_set_power_mode(dev,
1790 POLARIS_AVMODE_ENXTERNAL_AV);
1791 else
1792 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1793
1794 #if 0
1795 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1796 #endif
1797
1798 /* set video alternate setting */
1799 cx231xx_set_video_alternate(dev);
1800
1801 /* Needed, since GPIO might have disabled power of
1802 some i2c device */
1803 cx231xx_config_i2c(dev);
1804
1805 /* device needs to be initialized before isoc transfer */
1806 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1807
1808 }
1809 if (radio) {
1810 cx231xx_videodbg("video_open: setting radio device\n");
1811
1812 /* cx231xx_start_radio(dev); */
1813
1814 call_all(dev, tuner, s_radio);
1815 }
1816
1817 dev->users++;
1818
1819 if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1820 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1821 NULL, &dev->video_mode.slock,
1822 fh->type, V4L2_FIELD_INTERLACED,
1823 sizeof(struct cx231xx_buffer),
1824 fh, &dev->lock);
1825 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1826 /* Set the required alternate setting VBI interface works in
1827 Bulk mode only */
1828 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1829
1830 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1831 NULL, &dev->vbi_mode.slock,
1832 fh->type, V4L2_FIELD_SEQ_TB,
1833 sizeof(struct cx231xx_buffer),
1834 fh, &dev->lock);
1835 }
1836 mutex_unlock(&dev->lock);
1837 v4l2_fh_add(&fh->fh);
1838
1839 return 0;
1840 }
1841
1842 /*
1843 * cx231xx_realease_resources()
1844 * unregisters the v4l2,i2c and usb devices
1845 * called when the device gets disconected or at module unload
1846 */
1847 void cx231xx_release_analog_resources(struct cx231xx *dev)
1848 {
1849
1850 /*FIXME: I2C IR should be disconnected */
1851
1852 if (video_is_registered(&dev->radio_dev))
1853 video_unregister_device(&dev->radio_dev);
1854 if (video_is_registered(&dev->vbi_dev)) {
1855 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1856 video_device_node_name(&dev->vbi_dev));
1857 video_unregister_device(&dev->vbi_dev);
1858 }
1859 if (video_is_registered(&dev->vdev)) {
1860 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1861 video_device_node_name(&dev->vdev));
1862
1863 if (dev->board.has_417)
1864 cx231xx_417_unregister(dev);
1865
1866 video_unregister_device(&dev->vdev);
1867 }
1868 v4l2_ctrl_handler_free(&dev->ctrl_handler);
1869 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1870 }
1871
1872 /*
1873 * cx231xx_close()
1874 * stops streaming and deallocates all resources allocated by the v4l2
1875 * calls and ioctls
1876 */
1877 static int cx231xx_close(struct file *filp)
1878 {
1879 struct cx231xx_fh *fh = filp->private_data;
1880 struct cx231xx *dev = fh->dev;
1881
1882 cx231xx_videodbg("users=%d\n", dev->users);
1883
1884 cx231xx_videodbg("users=%d\n", dev->users);
1885 if (res_check(fh))
1886 res_free(fh);
1887
1888 /*
1889 * To workaround error number=-71 on EP0 for VideoGrabber,
1890 * need exclude following.
1891 * FIXME: It is probably safe to remove most of these, as we're
1892 * now avoiding the alternate setting for INDEX_VANC
1893 */
1894 if (!dev->board.no_alt_vanc)
1895 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1896 videobuf_stop(&fh->vb_vidq);
1897 videobuf_mmap_free(&fh->vb_vidq);
1898
1899 /* the device is already disconnect,
1900 free the remaining resources */
1901 if (dev->state & DEV_DISCONNECTED) {
1902 if (atomic_read(&dev->devlist_count) > 0) {
1903 cx231xx_release_resources(dev);
1904 fh->dev = NULL;
1905 return 0;
1906 }
1907 return 0;
1908 }
1909
1910 /* do this before setting alternate! */
1911 cx231xx_uninit_vbi_isoc(dev);
1912
1913 /* set alternate 0 */
1914 if (!dev->vbi_or_sliced_cc_mode)
1915 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1916 else
1917 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1918
1919 v4l2_fh_del(&fh->fh);
1920 v4l2_fh_exit(&fh->fh);
1921 kfree(fh);
1922 dev->users--;
1923 wake_up_interruptible(&dev->open);
1924 return 0;
1925 }
1926
1927 v4l2_fh_del(&fh->fh);
1928 dev->users--;
1929 if (!dev->users) {
1930 videobuf_stop(&fh->vb_vidq);
1931 videobuf_mmap_free(&fh->vb_vidq);
1932
1933 /* the device is already disconnect,
1934 free the remaining resources */
1935 if (dev->state & DEV_DISCONNECTED) {
1936 cx231xx_release_resources(dev);
1937 fh->dev = NULL;
1938 return 0;
1939 }
1940
1941 /* Save some power by putting tuner to sleep */
1942 call_all(dev, core, s_power, 0);
1943
1944 /* do this before setting alternate! */
1945 if (dev->USE_ISO)
1946 cx231xx_uninit_isoc(dev);
1947 else
1948 cx231xx_uninit_bulk(dev);
1949 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1950
1951 /* set alternate 0 */
1952 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1953 }
1954 v4l2_fh_exit(&fh->fh);
1955 kfree(fh);
1956 wake_up_interruptible(&dev->open);
1957 return 0;
1958 }
1959
1960 static int cx231xx_v4l2_close(struct file *filp)
1961 {
1962 struct cx231xx_fh *fh = filp->private_data;
1963 struct cx231xx *dev = fh->dev;
1964 int rc;
1965
1966 mutex_lock(&dev->lock);
1967 rc = cx231xx_close(filp);
1968 mutex_unlock(&dev->lock);
1969 return rc;
1970 }
1971
1972 /*
1973 * cx231xx_v4l2_read()
1974 * will allocate buffers when called for the first time
1975 */
1976 static ssize_t
1977 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1978 loff_t *pos)
1979 {
1980 struct cx231xx_fh *fh = filp->private_data;
1981 struct cx231xx *dev = fh->dev;
1982 int rc;
1983
1984 rc = check_dev(dev);
1985 if (rc < 0)
1986 return rc;
1987
1988 if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1989 (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1990 rc = res_get(fh);
1991
1992 if (unlikely(rc < 0))
1993 return rc;
1994
1995 if (mutex_lock_interruptible(&dev->lock))
1996 return -ERESTARTSYS;
1997 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1998 filp->f_flags & O_NONBLOCK);
1999 mutex_unlock(&dev->lock);
2000 return rc;
2001 }
2002 return 0;
2003 }
2004
2005 /*
2006 * cx231xx_v4l2_poll()
2007 * will allocate buffers when called for the first time
2008 */
2009 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2010 {
2011 unsigned long req_events = poll_requested_events(wait);
2012 struct cx231xx_fh *fh = filp->private_data;
2013 struct cx231xx *dev = fh->dev;
2014 unsigned res = 0;
2015 int rc;
2016
2017 rc = check_dev(dev);
2018 if (rc < 0)
2019 return POLLERR;
2020
2021 rc = res_get(fh);
2022
2023 if (unlikely(rc < 0))
2024 return POLLERR;
2025
2026 if (v4l2_event_pending(&fh->fh))
2027 res |= POLLPRI;
2028 else
2029 poll_wait(filp, &fh->fh.wait, wait);
2030
2031 if (!(req_events & (POLLIN | POLLRDNORM)))
2032 return res;
2033
2034 if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2035 (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2036 mutex_lock(&dev->lock);
2037 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2038 mutex_unlock(&dev->lock);
2039 return res;
2040 }
2041 return res | POLLERR;
2042 }
2043
2044 /*
2045 * cx231xx_v4l2_mmap()
2046 */
2047 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2048 {
2049 struct cx231xx_fh *fh = filp->private_data;
2050 struct cx231xx *dev = fh->dev;
2051 int rc;
2052
2053 rc = check_dev(dev);
2054 if (rc < 0)
2055 return rc;
2056
2057 rc = res_get(fh);
2058
2059 if (unlikely(rc < 0))
2060 return rc;
2061
2062 if (mutex_lock_interruptible(&dev->lock))
2063 return -ERESTARTSYS;
2064 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2065 mutex_unlock(&dev->lock);
2066
2067 cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2068 (unsigned long)vma->vm_start,
2069 (unsigned long)vma->vm_end -
2070 (unsigned long)vma->vm_start, rc);
2071
2072 return rc;
2073 }
2074
2075 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2076 .owner = THIS_MODULE,
2077 .open = cx231xx_v4l2_open,
2078 .release = cx231xx_v4l2_close,
2079 .read = cx231xx_v4l2_read,
2080 .poll = cx231xx_v4l2_poll,
2081 .mmap = cx231xx_v4l2_mmap,
2082 .unlocked_ioctl = video_ioctl2,
2083 };
2084
2085 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2086 .vidioc_querycap = cx231xx_querycap,
2087 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
2088 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
2089 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
2090 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
2091 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
2092 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
2093 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
2094 .vidioc_cropcap = vidioc_cropcap,
2095 .vidioc_reqbufs = vidioc_reqbufs,
2096 .vidioc_querybuf = vidioc_querybuf,
2097 .vidioc_qbuf = vidioc_qbuf,
2098 .vidioc_dqbuf = vidioc_dqbuf,
2099 .vidioc_s_std = vidioc_s_std,
2100 .vidioc_g_std = vidioc_g_std,
2101 .vidioc_enum_input = cx231xx_enum_input,
2102 .vidioc_g_input = cx231xx_g_input,
2103 .vidioc_s_input = cx231xx_s_input,
2104 .vidioc_streamon = vidioc_streamon,
2105 .vidioc_streamoff = vidioc_streamoff,
2106 .vidioc_g_tuner = cx231xx_g_tuner,
2107 .vidioc_s_tuner = cx231xx_s_tuner,
2108 .vidioc_g_frequency = cx231xx_g_frequency,
2109 .vidioc_s_frequency = cx231xx_s_frequency,
2110 #ifdef CONFIG_VIDEO_ADV_DEBUG
2111 .vidioc_g_chip_info = cx231xx_g_chip_info,
2112 .vidioc_g_register = cx231xx_g_register,
2113 .vidioc_s_register = cx231xx_s_register,
2114 #endif
2115 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2116 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2117 };
2118
2119 static struct video_device cx231xx_vbi_template;
2120
2121 static const struct video_device cx231xx_video_template = {
2122 .fops = &cx231xx_v4l_fops,
2123 .release = video_device_release_empty,
2124 .ioctl_ops = &video_ioctl_ops,
2125 .tvnorms = V4L2_STD_ALL,
2126 };
2127
2128 static const struct v4l2_file_operations radio_fops = {
2129 .owner = THIS_MODULE,
2130 .open = cx231xx_v4l2_open,
2131 .release = cx231xx_v4l2_close,
2132 .poll = v4l2_ctrl_poll,
2133 .unlocked_ioctl = video_ioctl2,
2134 };
2135
2136 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2137 .vidioc_querycap = cx231xx_querycap,
2138 .vidioc_g_tuner = radio_g_tuner,
2139 .vidioc_s_tuner = radio_s_tuner,
2140 .vidioc_g_frequency = cx231xx_g_frequency,
2141 .vidioc_s_frequency = cx231xx_s_frequency,
2142 #ifdef CONFIG_VIDEO_ADV_DEBUG
2143 .vidioc_g_chip_info = cx231xx_g_chip_info,
2144 .vidioc_g_register = cx231xx_g_register,
2145 .vidioc_s_register = cx231xx_s_register,
2146 #endif
2147 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2148 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2149 };
2150
2151 static struct video_device cx231xx_radio_template = {
2152 .name = "cx231xx-radio",
2153 .fops = &radio_fops,
2154 .ioctl_ops = &radio_ioctl_ops,
2155 };
2156
2157 /******************************** usb interface ******************************/
2158
2159 static void cx231xx_vdev_init(struct cx231xx *dev,
2160 struct video_device *vfd,
2161 const struct video_device *template,
2162 const char *type_name)
2163 {
2164 *vfd = *template;
2165 vfd->v4l2_dev = &dev->v4l2_dev;
2166 vfd->release = video_device_release_empty;
2167 vfd->lock = &dev->lock;
2168
2169 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2170
2171 video_set_drvdata(vfd, dev);
2172 if (dev->tuner_type == TUNER_ABSENT) {
2173 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2174 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2175 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2176 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2177 }
2178 }
2179
2180 int cx231xx_register_analog_devices(struct cx231xx *dev)
2181 {
2182 int ret;
2183
2184 dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2185
2186 /* set default norm */
2187 dev->norm = V4L2_STD_PAL;
2188 dev->width = norm_maxw(dev);
2189 dev->height = norm_maxh(dev);
2190 dev->interlaced = 0;
2191
2192 /* Analog specific initialization */
2193 dev->format = &format[0];
2194
2195 /* Set the initial input */
2196 video_mux(dev, dev->video_input);
2197
2198 call_all(dev, video, s_std, dev->norm);
2199
2200 v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2201 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2202
2203 if (dev->sd_cx25840) {
2204 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2205 dev->sd_cx25840->ctrl_handler, NULL);
2206 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2207 dev->sd_cx25840->ctrl_handler,
2208 v4l2_ctrl_radio_filter);
2209 }
2210
2211 if (dev->ctrl_handler.error)
2212 return dev->ctrl_handler.error;
2213 if (dev->radio_ctrl_handler.error)
2214 return dev->radio_ctrl_handler.error;
2215
2216 /* enable vbi capturing */
2217 /* write code here... */
2218
2219 /* allocate and fill video video_device struct */
2220 cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2221 #if defined(CONFIG_MEDIA_CONTROLLER)
2222 dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2223 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2224 if (ret < 0)
2225 dev_err(dev->dev, "failed to initialize video media entity!\n");
2226 #endif
2227 dev->vdev.ctrl_handler = &dev->ctrl_handler;
2228 /* register v4l2 video video_device */
2229 ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2230 video_nr[dev->devno]);
2231 if (ret) {
2232 dev_err(dev->dev,
2233 "unable to register video device (error=%i).\n",
2234 ret);
2235 return ret;
2236 }
2237
2238 dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2239 video_device_node_name(&dev->vdev));
2240
2241 /* Initialize VBI template */
2242 cx231xx_vbi_template = cx231xx_video_template;
2243 strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2244
2245 /* Allocate and fill vbi video_device struct */
2246 cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2247
2248 #if defined(CONFIG_MEDIA_CONTROLLER)
2249 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2250 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2251 if (ret < 0)
2252 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2253 #endif
2254 dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2255 /* register v4l2 vbi video_device */
2256 ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2257 vbi_nr[dev->devno]);
2258 if (ret < 0) {
2259 dev_err(dev->dev, "unable to register vbi device\n");
2260 return ret;
2261 }
2262
2263 dev_info(dev->dev, "Registered VBI device %s\n",
2264 video_device_node_name(&dev->vbi_dev));
2265
2266 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2267 cx231xx_vdev_init(dev, &dev->radio_dev,
2268 &cx231xx_radio_template, "radio");
2269 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2270 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2271 radio_nr[dev->devno]);
2272 if (ret < 0) {
2273 dev_err(dev->dev,
2274 "can't register radio device\n");
2275 return ret;
2276 }
2277 dev_info(dev->dev, "Registered radio device as %s\n",
2278 video_device_node_name(&dev->radio_dev));
2279 }
2280
2281 return 0;
2282 }
Linux kernel - Deliverables
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