media: cropcap/g_selection split
[sfrench/cifs-2.6.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 <media/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 synchronously";
203                 break;
204         case -ECONNRESET:
205                 errmsg = "unlinked asynchronously";
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 const 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 through */
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         strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));
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         strscpy(t->name, "Tuner", sizeof(t->name));
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                 strscpy(chip->name, "AFE (byte)", sizeof(chip->name));
1358                 return 0;
1359         case 2: /* Video Block - read byte */
1360                 strscpy(chip->name, "Video (byte)", sizeof(chip->name));
1361                 return 0;
1362         case 3: /* I2S block - read byte */
1363                 strscpy(chip->name, "I2S (byte)", sizeof(chip->name));
1364                 return 0;
1365         case 4: /* AFE - read dword */
1366                 strscpy(chip->name, "AFE (dword)", sizeof(chip->name));
1367                 return 0;
1368         case 5: /* Video Block - read dword */
1369                 strscpy(chip->name, "Video (dword)", sizeof(chip->name));
1370                 return 0;
1371         case 6: /* I2S Block - read dword */
1372                 strscpy(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 | (u32)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->pixelaspect.numerator = is_50hz ? 54 : 11;
1496         cc->pixelaspect.denominator = is_50hz ? 59 : 10;
1497
1498         return 0;
1499 }
1500
1501 static int vidioc_g_selection(struct file *file, void *priv,
1502                               struct v4l2_selection *s)
1503 {
1504         struct cx231xx_fh *fh = priv;
1505         struct cx231xx *dev = fh->dev;
1506
1507         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1508                 return -EINVAL;
1509
1510         switch (s->target) {
1511         case V4L2_SEL_TGT_CROP_BOUNDS:
1512         case V4L2_SEL_TGT_CROP_DEFAULT:
1513                 s->r.left = 0;
1514                 s->r.top = 0;
1515                 s->r.width = dev->width;
1516                 s->r.height = dev->height;
1517                 break;
1518         default:
1519                 return -EINVAL;
1520         }
1521         return 0;
1522 }
1523
1524 static int vidioc_streamon(struct file *file, void *priv,
1525                            enum v4l2_buf_type type)
1526 {
1527         struct cx231xx_fh *fh = priv;
1528         struct cx231xx *dev = fh->dev;
1529         int rc;
1530
1531         rc = check_dev(dev);
1532         if (rc < 0)
1533                 return rc;
1534
1535         rc = res_get(fh);
1536
1537         if (likely(rc >= 0))
1538                 rc = videobuf_streamon(&fh->vb_vidq);
1539
1540         call_all(dev, video, s_stream, 1);
1541
1542         return rc;
1543 }
1544
1545 static int vidioc_streamoff(struct file *file, void *priv,
1546                             enum v4l2_buf_type type)
1547 {
1548         struct cx231xx_fh *fh = priv;
1549         struct cx231xx *dev = fh->dev;
1550         int rc;
1551
1552         rc = check_dev(dev);
1553         if (rc < 0)
1554                 return rc;
1555
1556         if (type != fh->type)
1557                 return -EINVAL;
1558
1559         cx25840_call(dev, video, s_stream, 0);
1560
1561         videobuf_streamoff(&fh->vb_vidq);
1562         res_free(fh);
1563
1564         return 0;
1565 }
1566
1567 int cx231xx_querycap(struct file *file, void *priv,
1568                            struct v4l2_capability *cap)
1569 {
1570         struct video_device *vdev = video_devdata(file);
1571         struct cx231xx_fh *fh = priv;
1572         struct cx231xx *dev = fh->dev;
1573
1574         strscpy(cap->driver, "cx231xx", sizeof(cap->driver));
1575         strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1576         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1577
1578         if (vdev->vfl_type == VFL_TYPE_RADIO)
1579                 cap->device_caps = V4L2_CAP_RADIO;
1580         else {
1581                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1582                 if (vdev->vfl_type == VFL_TYPE_VBI)
1583                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1584                 else
1585                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1586         }
1587         if (dev->tuner_type != TUNER_ABSENT)
1588                 cap->device_caps |= V4L2_CAP_TUNER;
1589         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1590                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1591                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1592         if (video_is_registered(&dev->radio_dev))
1593                 cap->capabilities |= V4L2_CAP_RADIO;
1594
1595         return 0;
1596 }
1597
1598 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1599                                    struct v4l2_fmtdesc *f)
1600 {
1601         if (unlikely(f->index >= ARRAY_SIZE(format)))
1602                 return -EINVAL;
1603
1604         strscpy(f->description, format[f->index].name, sizeof(f->description));
1605         f->pixelformat = format[f->index].fourcc;
1606
1607         return 0;
1608 }
1609
1610 /* RAW VBI ioctls */
1611
1612 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1613                                 struct v4l2_format *f)
1614 {
1615         struct cx231xx_fh *fh = priv;
1616         struct cx231xx *dev = fh->dev;
1617
1618         f->fmt.vbi.sampling_rate = 6750000 * 4;
1619         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1620         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1621         f->fmt.vbi.offset = 0;
1622         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1623             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1624         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1625             PAL_VBI_LINES : NTSC_VBI_LINES;
1626         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1627             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1628         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1629         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1630
1631         return 0;
1632
1633 }
1634
1635 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1636                                   struct v4l2_format *f)
1637 {
1638         struct cx231xx_fh *fh = priv;
1639         struct cx231xx *dev = fh->dev;
1640
1641         f->fmt.vbi.sampling_rate = 6750000 * 4;
1642         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1643         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1644         f->fmt.vbi.offset = 0;
1645         f->fmt.vbi.flags = 0;
1646         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1647             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1648         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1649             PAL_VBI_LINES : NTSC_VBI_LINES;
1650         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1651             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1652         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1653         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1654
1655         return 0;
1656
1657 }
1658
1659 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1660                                   struct v4l2_format *f)
1661 {
1662         struct cx231xx_fh *fh = priv;
1663         struct cx231xx *dev = fh->dev;
1664
1665         if (dev->vbi_stream_on && !fh->stream_on) {
1666                 dev_err(dev->dev,
1667                         "%s device in use by another fh\n", __func__);
1668                 return -EBUSY;
1669         }
1670         return vidioc_try_fmt_vbi_cap(file, priv, f);
1671 }
1672
1673 static int vidioc_reqbufs(struct file *file, void *priv,
1674                           struct v4l2_requestbuffers *rb)
1675 {
1676         struct cx231xx_fh *fh = priv;
1677         struct cx231xx *dev = fh->dev;
1678         int rc;
1679
1680         rc = check_dev(dev);
1681         if (rc < 0)
1682                 return rc;
1683
1684         return videobuf_reqbufs(&fh->vb_vidq, rb);
1685 }
1686
1687 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1688 {
1689         struct cx231xx_fh *fh = priv;
1690         struct cx231xx *dev = fh->dev;
1691         int rc;
1692
1693         rc = check_dev(dev);
1694         if (rc < 0)
1695                 return rc;
1696
1697         return videobuf_querybuf(&fh->vb_vidq, b);
1698 }
1699
1700 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1701 {
1702         struct cx231xx_fh *fh = priv;
1703         struct cx231xx *dev = fh->dev;
1704         int rc;
1705
1706         rc = check_dev(dev);
1707         if (rc < 0)
1708                 return rc;
1709
1710         return videobuf_qbuf(&fh->vb_vidq, b);
1711 }
1712
1713 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1714 {
1715         struct cx231xx_fh *fh = priv;
1716         struct cx231xx *dev = fh->dev;
1717         int rc;
1718
1719         rc = check_dev(dev);
1720         if (rc < 0)
1721                 return rc;
1722
1723         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1724 }
1725
1726 /* ----------------------------------------------------------- */
1727 /* RADIO ESPECIFIC IOCTLS                                      */
1728 /* ----------------------------------------------------------- */
1729
1730 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1731 {
1732         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1733
1734         if (t->index)
1735                 return -EINVAL;
1736
1737         strscpy(t->name, "Radio", sizeof(t->name));
1738
1739         call_all(dev, tuner, g_tuner, t);
1740
1741         return 0;
1742 }
1743 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1744 {
1745         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1746
1747         if (t->index)
1748                 return -EINVAL;
1749
1750         call_all(dev, tuner, s_tuner, t);
1751
1752         return 0;
1753 }
1754
1755 /*
1756  * cx231xx_v4l2_open()
1757  * inits the device and starts isoc transfer
1758  */
1759 static int cx231xx_v4l2_open(struct file *filp)
1760 {
1761         int radio = 0;
1762         struct video_device *vdev = video_devdata(filp);
1763         struct cx231xx *dev = video_drvdata(filp);
1764         struct cx231xx_fh *fh;
1765         enum v4l2_buf_type fh_type = 0;
1766
1767         switch (vdev->vfl_type) {
1768         case VFL_TYPE_GRABBER:
1769                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1770                 break;
1771         case VFL_TYPE_VBI:
1772                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1773                 break;
1774         case VFL_TYPE_RADIO:
1775                 radio = 1;
1776                 break;
1777         default:
1778                 return -EINVAL;
1779         }
1780
1781         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1782                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1783                          dev->users);
1784
1785 #if 0
1786         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1787         if (errCode < 0) {
1788                 dev_err(dev->dev,
1789                         "Device locked on digital mode. Can't open analog\n");
1790                 return -EBUSY;
1791         }
1792 #endif
1793
1794         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1795         if (!fh)
1796                 return -ENOMEM;
1797         if (mutex_lock_interruptible(&dev->lock)) {
1798                 kfree(fh);
1799                 return -ERESTARTSYS;
1800         }
1801         fh->dev = dev;
1802         fh->type = fh_type;
1803         filp->private_data = fh;
1804         v4l2_fh_init(&fh->fh, vdev);
1805
1806         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1807                 /* Power up in Analog TV mode */
1808                 if (dev->board.external_av)
1809                         cx231xx_set_power_mode(dev,
1810                                  POLARIS_AVMODE_ENXTERNAL_AV);
1811                 else
1812                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1813
1814 #if 0
1815                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1816 #endif
1817
1818                 /* set video alternate setting */
1819                 cx231xx_set_video_alternate(dev);
1820
1821                 /* Needed, since GPIO might have disabled power of
1822                    some i2c device */
1823                 cx231xx_config_i2c(dev);
1824
1825                 /* device needs to be initialized before isoc transfer */
1826                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1827
1828         }
1829         if (radio) {
1830                 cx231xx_videodbg("video_open: setting radio device\n");
1831
1832                 /* cx231xx_start_radio(dev); */
1833
1834                 call_all(dev, tuner, s_radio);
1835         }
1836
1837         dev->users++;
1838
1839         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1840                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1841                                             NULL, &dev->video_mode.slock,
1842                                             fh->type, V4L2_FIELD_INTERLACED,
1843                                             sizeof(struct cx231xx_buffer),
1844                                             fh, &dev->lock);
1845         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1846                 /* Set the required alternate setting  VBI interface works in
1847                    Bulk mode only */
1848                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1849
1850                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1851                                             NULL, &dev->vbi_mode.slock,
1852                                             fh->type, V4L2_FIELD_SEQ_TB,
1853                                             sizeof(struct cx231xx_buffer),
1854                                             fh, &dev->lock);
1855         }
1856         mutex_unlock(&dev->lock);
1857         v4l2_fh_add(&fh->fh);
1858
1859         return 0;
1860 }
1861
1862 /*
1863  * cx231xx_realease_resources()
1864  * unregisters the v4l2,i2c and usb devices
1865  * called when the device gets disconected or at module unload
1866 */
1867 void cx231xx_release_analog_resources(struct cx231xx *dev)
1868 {
1869
1870         /*FIXME: I2C IR should be disconnected */
1871
1872         if (video_is_registered(&dev->radio_dev))
1873                 video_unregister_device(&dev->radio_dev);
1874         if (video_is_registered(&dev->vbi_dev)) {
1875                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1876                         video_device_node_name(&dev->vbi_dev));
1877                 video_unregister_device(&dev->vbi_dev);
1878         }
1879         if (video_is_registered(&dev->vdev)) {
1880                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1881                         video_device_node_name(&dev->vdev));
1882
1883                 if (dev->board.has_417)
1884                         cx231xx_417_unregister(dev);
1885
1886                 video_unregister_device(&dev->vdev);
1887         }
1888         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1889         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1890 }
1891
1892 /*
1893  * cx231xx_close()
1894  * stops streaming and deallocates all resources allocated by the v4l2
1895  * calls and ioctls
1896  */
1897 static int cx231xx_close(struct file *filp)
1898 {
1899         struct cx231xx_fh *fh = filp->private_data;
1900         struct cx231xx *dev = fh->dev;
1901
1902         cx231xx_videodbg("users=%d\n", dev->users);
1903
1904         cx231xx_videodbg("users=%d\n", dev->users);
1905         if (res_check(fh))
1906                 res_free(fh);
1907
1908         /*
1909          * To workaround error number=-71 on EP0 for VideoGrabber,
1910          *       need exclude following.
1911          * FIXME: It is probably safe to remove most of these, as we're
1912          * now avoiding the alternate setting for INDEX_VANC
1913          */
1914         if (!dev->board.no_alt_vanc)
1915                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1916                         videobuf_stop(&fh->vb_vidq);
1917                         videobuf_mmap_free(&fh->vb_vidq);
1918
1919                         /* the device is already disconnect,
1920                            free the remaining resources */
1921                         if (dev->state & DEV_DISCONNECTED) {
1922                                 if (atomic_read(&dev->devlist_count) > 0) {
1923                                         cx231xx_release_resources(dev);
1924                                         fh->dev = NULL;
1925                                         return 0;
1926                                 }
1927                                 return 0;
1928                         }
1929
1930                         /* do this before setting alternate! */
1931                         cx231xx_uninit_vbi_isoc(dev);
1932
1933                         /* set alternate 0 */
1934                         if (!dev->vbi_or_sliced_cc_mode)
1935                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1936                         else
1937                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1938
1939                         v4l2_fh_del(&fh->fh);
1940                         v4l2_fh_exit(&fh->fh);
1941                         kfree(fh);
1942                         dev->users--;
1943                         wake_up_interruptible(&dev->open);
1944                         return 0;
1945                 }
1946
1947         v4l2_fh_del(&fh->fh);
1948         dev->users--;
1949         if (!dev->users) {
1950                 videobuf_stop(&fh->vb_vidq);
1951                 videobuf_mmap_free(&fh->vb_vidq);
1952
1953                 /* the device is already disconnect,
1954                    free the remaining resources */
1955                 if (dev->state & DEV_DISCONNECTED) {
1956                         cx231xx_release_resources(dev);
1957                         fh->dev = NULL;
1958                         return 0;
1959                 }
1960
1961                 /* Save some power by putting tuner to sleep */
1962                 call_all(dev, tuner, standby);
1963
1964                 /* do this before setting alternate! */
1965                 if (dev->USE_ISO)
1966                         cx231xx_uninit_isoc(dev);
1967                 else
1968                         cx231xx_uninit_bulk(dev);
1969                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1970
1971                 /* set alternate 0 */
1972                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1973         }
1974         v4l2_fh_exit(&fh->fh);
1975         kfree(fh);
1976         wake_up_interruptible(&dev->open);
1977         return 0;
1978 }
1979
1980 static int cx231xx_v4l2_close(struct file *filp)
1981 {
1982         struct cx231xx_fh *fh = filp->private_data;
1983         struct cx231xx *dev = fh->dev;
1984         int rc;
1985
1986         mutex_lock(&dev->lock);
1987         rc = cx231xx_close(filp);
1988         mutex_unlock(&dev->lock);
1989         return rc;
1990 }
1991
1992 /*
1993  * cx231xx_v4l2_read()
1994  * will allocate buffers when called for the first time
1995  */
1996 static ssize_t
1997 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1998                   loff_t *pos)
1999 {
2000         struct cx231xx_fh *fh = filp->private_data;
2001         struct cx231xx *dev = fh->dev;
2002         int rc;
2003
2004         rc = check_dev(dev);
2005         if (rc < 0)
2006                 return rc;
2007
2008         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2009             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2010                 rc = res_get(fh);
2011
2012                 if (unlikely(rc < 0))
2013                         return rc;
2014
2015                 if (mutex_lock_interruptible(&dev->lock))
2016                         return -ERESTARTSYS;
2017                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2018                                             filp->f_flags & O_NONBLOCK);
2019                 mutex_unlock(&dev->lock);
2020                 return rc;
2021         }
2022         return 0;
2023 }
2024
2025 /*
2026  * cx231xx_v4l2_poll()
2027  * will allocate buffers when called for the first time
2028  */
2029 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2030 {
2031         __poll_t req_events = poll_requested_events(wait);
2032         struct cx231xx_fh *fh = filp->private_data;
2033         struct cx231xx *dev = fh->dev;
2034         __poll_t res = 0;
2035         int rc;
2036
2037         rc = check_dev(dev);
2038         if (rc < 0)
2039                 return EPOLLERR;
2040
2041         rc = res_get(fh);
2042
2043         if (unlikely(rc < 0))
2044                 return EPOLLERR;
2045
2046         if (v4l2_event_pending(&fh->fh))
2047                 res |= EPOLLPRI;
2048         else
2049                 poll_wait(filp, &fh->fh.wait, wait);
2050
2051         if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
2052                 return res;
2053
2054         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2055             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2056                 mutex_lock(&dev->lock);
2057                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2058                 mutex_unlock(&dev->lock);
2059                 return res;
2060         }
2061         return res | EPOLLERR;
2062 }
2063
2064 /*
2065  * cx231xx_v4l2_mmap()
2066  */
2067 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2068 {
2069         struct cx231xx_fh *fh = filp->private_data;
2070         struct cx231xx *dev = fh->dev;
2071         int rc;
2072
2073         rc = check_dev(dev);
2074         if (rc < 0)
2075                 return rc;
2076
2077         rc = res_get(fh);
2078
2079         if (unlikely(rc < 0))
2080                 return rc;
2081
2082         if (mutex_lock_interruptible(&dev->lock))
2083                 return -ERESTARTSYS;
2084         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2085         mutex_unlock(&dev->lock);
2086
2087         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2088                          (unsigned long)vma->vm_start,
2089                          (unsigned long)vma->vm_end -
2090                          (unsigned long)vma->vm_start, rc);
2091
2092         return rc;
2093 }
2094
2095 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2096         .owner   = THIS_MODULE,
2097         .open    = cx231xx_v4l2_open,
2098         .release = cx231xx_v4l2_close,
2099         .read    = cx231xx_v4l2_read,
2100         .poll    = cx231xx_v4l2_poll,
2101         .mmap    = cx231xx_v4l2_mmap,
2102         .unlocked_ioctl   = video_ioctl2,
2103 };
2104
2105 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2106         .vidioc_querycap               = cx231xx_querycap,
2107         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2108         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2109         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2110         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2111         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2112         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2113         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2114         .vidioc_cropcap                = vidioc_cropcap,
2115         .vidioc_g_selection            = vidioc_g_selection,
2116         .vidioc_reqbufs                = vidioc_reqbufs,
2117         .vidioc_querybuf               = vidioc_querybuf,
2118         .vidioc_qbuf                   = vidioc_qbuf,
2119         .vidioc_dqbuf                  = vidioc_dqbuf,
2120         .vidioc_s_std                  = vidioc_s_std,
2121         .vidioc_g_std                  = vidioc_g_std,
2122         .vidioc_enum_input             = cx231xx_enum_input,
2123         .vidioc_g_input                = cx231xx_g_input,
2124         .vidioc_s_input                = cx231xx_s_input,
2125         .vidioc_streamon               = vidioc_streamon,
2126         .vidioc_streamoff              = vidioc_streamoff,
2127         .vidioc_g_tuner                = cx231xx_g_tuner,
2128         .vidioc_s_tuner                = cx231xx_s_tuner,
2129         .vidioc_g_frequency            = cx231xx_g_frequency,
2130         .vidioc_s_frequency            = cx231xx_s_frequency,
2131 #ifdef CONFIG_VIDEO_ADV_DEBUG
2132         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2133         .vidioc_g_register             = cx231xx_g_register,
2134         .vidioc_s_register             = cx231xx_s_register,
2135 #endif
2136         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2137         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2138 };
2139
2140 static struct video_device cx231xx_vbi_template;
2141
2142 static const struct video_device cx231xx_video_template = {
2143         .fops         = &cx231xx_v4l_fops,
2144         .release      = video_device_release_empty,
2145         .ioctl_ops    = &video_ioctl_ops,
2146         .tvnorms      = V4L2_STD_ALL,
2147 };
2148
2149 static const struct v4l2_file_operations radio_fops = {
2150         .owner   = THIS_MODULE,
2151         .open   = cx231xx_v4l2_open,
2152         .release = cx231xx_v4l2_close,
2153         .poll = v4l2_ctrl_poll,
2154         .unlocked_ioctl = video_ioctl2,
2155 };
2156
2157 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2158         .vidioc_querycap    = cx231xx_querycap,
2159         .vidioc_g_tuner     = radio_g_tuner,
2160         .vidioc_s_tuner     = radio_s_tuner,
2161         .vidioc_g_frequency = cx231xx_g_frequency,
2162         .vidioc_s_frequency = cx231xx_s_frequency,
2163 #ifdef CONFIG_VIDEO_ADV_DEBUG
2164         .vidioc_g_chip_info = cx231xx_g_chip_info,
2165         .vidioc_g_register  = cx231xx_g_register,
2166         .vidioc_s_register  = cx231xx_s_register,
2167 #endif
2168         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2169         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2170 };
2171
2172 static struct video_device cx231xx_radio_template = {
2173         .name      = "cx231xx-radio",
2174         .fops      = &radio_fops,
2175         .ioctl_ops = &radio_ioctl_ops,
2176 };
2177
2178 /******************************** usb interface ******************************/
2179
2180 static void cx231xx_vdev_init(struct cx231xx *dev,
2181                 struct video_device *vfd,
2182                 const struct video_device *template,
2183                 const char *type_name)
2184 {
2185         *vfd = *template;
2186         vfd->v4l2_dev = &dev->v4l2_dev;
2187         vfd->release = video_device_release_empty;
2188         vfd->lock = &dev->lock;
2189
2190         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2191
2192         video_set_drvdata(vfd, dev);
2193         if (dev->tuner_type == TUNER_ABSENT) {
2194                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2195                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2196                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2197                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2198         }
2199 }
2200
2201 int cx231xx_register_analog_devices(struct cx231xx *dev)
2202 {
2203         int ret;
2204
2205         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2206
2207         /* set default norm */
2208         dev->norm = V4L2_STD_PAL;
2209         dev->width = norm_maxw(dev);
2210         dev->height = norm_maxh(dev);
2211         dev->interlaced = 0;
2212
2213         /* Analog specific initialization */
2214         dev->format = &format[0];
2215
2216         /* Set the initial input */
2217         video_mux(dev, dev->video_input);
2218
2219         call_all(dev, video, s_std, dev->norm);
2220
2221         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2222         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2223
2224         if (dev->sd_cx25840) {
2225                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2226                                 dev->sd_cx25840->ctrl_handler, NULL, true);
2227                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2228                                 dev->sd_cx25840->ctrl_handler,
2229                                 v4l2_ctrl_radio_filter, true);
2230         }
2231
2232         if (dev->ctrl_handler.error)
2233                 return dev->ctrl_handler.error;
2234         if (dev->radio_ctrl_handler.error)
2235                 return dev->radio_ctrl_handler.error;
2236
2237         /* enable vbi capturing */
2238         /* write code here...  */
2239
2240         /* allocate and fill video video_device struct */
2241         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2242 #if defined(CONFIG_MEDIA_CONTROLLER)
2243         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2244         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2245         if (ret < 0)
2246                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2247 #endif
2248         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2249         /* register v4l2 video video_device */
2250         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2251                                     video_nr[dev->devno]);
2252         if (ret) {
2253                 dev_err(dev->dev,
2254                         "unable to register video device (error=%i).\n",
2255                         ret);
2256                 return ret;
2257         }
2258
2259         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2260                 video_device_node_name(&dev->vdev));
2261
2262         /* Initialize VBI template */
2263         cx231xx_vbi_template = cx231xx_video_template;
2264         strscpy(cx231xx_vbi_template.name, "cx231xx-vbi",
2265                 sizeof(cx231xx_vbi_template.name));
2266
2267         /* Allocate and fill vbi video_device struct */
2268         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2269
2270 #if defined(CONFIG_MEDIA_CONTROLLER)
2271         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2272         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2273         if (ret < 0)
2274                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2275 #endif
2276         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2277         /* register v4l2 vbi video_device */
2278         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2279                                     vbi_nr[dev->devno]);
2280         if (ret < 0) {
2281                 dev_err(dev->dev, "unable to register vbi device\n");
2282                 return ret;
2283         }
2284
2285         dev_info(dev->dev, "Registered VBI device %s\n",
2286                 video_device_node_name(&dev->vbi_dev));
2287
2288         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2289                 cx231xx_vdev_init(dev, &dev->radio_dev,
2290                                 &cx231xx_radio_template, "radio");
2291                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2292                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2293                                             radio_nr[dev->devno]);
2294                 if (ret < 0) {
2295                         dev_err(dev->dev,
2296                                 "can't register radio device\n");
2297                         return ret;
2298                 }
2299                 dev_info(dev->dev, "Registered radio device as %s\n",
2300                         video_device_node_name(&dev->radio_dev));
2301         }
2302
2303         return 0;
2304 }