Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / media / video / cx231xx / cx231xx-video.c
1 /*
2    cx231xx-video.c - driver for Conexant Cx23100/101/102
3                      USB video capture devices
4
5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
6         Based on em28xx driver
7         Based on cx23885 driver
8         Based on cx88 driver
9
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 2 of the License, or
13    (at your option) any later version.
14
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  */
24
25 #include <linux/init.h>
26 #include <linux/list.h>
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/bitmap.h>
30 #include <linux/usb.h>
31 #include <linux/i2c.h>
32 #include <linux/version.h>
33 #include <linux/mm.h>
34 #include <linux/mutex.h>
35
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <media/msp3400.h>
40 #include <media/tuner.h>
41
42 #include "dvb_frontend.h"
43
44 #include "cx231xx.h"
45 #include "cx231xx-vbi.h"
46
47 #define CX231XX_VERSION_CODE            KERNEL_VERSION(0, 0, 1)
48
49 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
50 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
51
52 #define cx231xx_videodbg(fmt, arg...) do {\
53         if (video_debug) \
54                 printk(KERN_INFO "%s %s :"fmt, \
55                          dev->name, __func__ , ##arg); } while (0)
56
57 static unsigned int isoc_debug;
58 module_param(isoc_debug, int, 0644);
59 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
60
61 #define cx231xx_isocdbg(fmt, arg...) \
62 do {\
63         if (isoc_debug) { \
64                 printk(KERN_INFO "%s %s :"fmt, \
65                          dev->name, __func__ , ##arg); \
66         } \
67   } while (0)
68
69 MODULE_AUTHOR(DRIVER_AUTHOR);
70 MODULE_DESCRIPTION(DRIVER_DESC);
71 MODULE_LICENSE("GPL");
72
73 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
75 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
77
78 module_param_array(card, int, NULL, 0444);
79 module_param_array(video_nr, int, NULL, 0444);
80 module_param_array(vbi_nr, int, NULL, 0444);
81 module_param_array(radio_nr, int, NULL, 0444);
82
83 MODULE_PARM_DESC(card, "card type");
84 MODULE_PARM_DESC(video_nr, "video device numbers");
85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
87
88 static unsigned int video_debug;
89 module_param(video_debug, int, 0644);
90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
91
92 /* supported video standards */
93 static struct cx231xx_fmt format[] = {
94         {
95          .name = "16bpp YUY2, 4:2:2, packed",
96          .fourcc = V4L2_PIX_FMT_YUYV,
97          .depth = 16,
98          .reg = 0,
99          },
100 };
101
102 /* supported controls */
103 /* Common to all boards */
104
105 /* ------------------------------------------------------------------- */
106
107 static const struct v4l2_queryctrl no_ctl = {
108         .name = "42",
109         .flags = V4L2_CTRL_FLAG_DISABLED,
110 };
111
112 static struct cx231xx_ctrl cx231xx_ctls[] = {
113         /* --- video --- */
114         {
115                 .v = {
116                         .id = V4L2_CID_BRIGHTNESS,
117                         .name = "Brightness",
118                         .minimum = 0x00,
119                         .maximum = 0xff,
120                         .step = 1,
121                         .default_value = 0x7f,
122                         .type = V4L2_CTRL_TYPE_INTEGER,
123                 },
124                 .off = 128,
125                 .reg = LUMA_CTRL,
126                 .mask = 0x00ff,
127                 .shift = 0,
128         }, {
129                 .v = {
130                         .id = V4L2_CID_CONTRAST,
131                         .name = "Contrast",
132                         .minimum = 0,
133                         .maximum = 0xff,
134                         .step = 1,
135                         .default_value = 0x3f,
136                         .type = V4L2_CTRL_TYPE_INTEGER,
137                 },
138                 .off = 0,
139                 .reg = LUMA_CTRL,
140                 .mask = 0xff00,
141                 .shift = 8,
142         }, {
143                 .v = {
144                         .id = V4L2_CID_HUE,
145                         .name = "Hue",
146                         .minimum = 0,
147                         .maximum = 0xff,
148                         .step = 1,
149                         .default_value = 0x7f,
150                         .type = V4L2_CTRL_TYPE_INTEGER,
151                 },
152                 .off = 128,
153                 .reg = CHROMA_CTRL,
154                 .mask = 0xff0000,
155                 .shift = 16,
156         }, {
157         /* strictly, this only describes only U saturation.
158         * V saturation is handled specially through code.
159         */
160                 .v = {
161                         .id = V4L2_CID_SATURATION,
162                         .name = "Saturation",
163                         .minimum = 0,
164                         .maximum = 0xff,
165                         .step = 1,
166                         .default_value = 0x7f,
167                         .type = V4L2_CTRL_TYPE_INTEGER,
168                 },
169                 .off = 0,
170                 .reg = CHROMA_CTRL,
171                 .mask = 0x00ff,
172                 .shift = 0,
173         }, {
174                 /* --- audio --- */
175                 .v = {
176                         .id = V4L2_CID_AUDIO_MUTE,
177                         .name = "Mute",
178                         .minimum = 0,
179                         .maximum = 1,
180                         .default_value = 1,
181                         .type = V4L2_CTRL_TYPE_BOOLEAN,
182                 },
183                 .reg = PATH1_CTL1,
184                 .mask = (0x1f << 24),
185                 .shift = 24,
186         }, {
187                 .v = {
188                         .id = V4L2_CID_AUDIO_VOLUME,
189                         .name = "Volume",
190                         .minimum = 0,
191                         .maximum = 0x3f,
192                         .step = 1,
193                         .default_value = 0x3f,
194                         .type = V4L2_CTRL_TYPE_INTEGER,
195                 },
196                 .reg = PATH1_VOL_CTL,
197                 .mask = 0xff,
198                 .shift = 0,
199         }
200 };
201 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
202
203 static const u32 cx231xx_user_ctrls[] = {
204         V4L2_CID_USER_CLASS,
205         V4L2_CID_BRIGHTNESS,
206         V4L2_CID_CONTRAST,
207         V4L2_CID_SATURATION,
208         V4L2_CID_HUE,
209         V4L2_CID_AUDIO_VOLUME,
210 #if 0
211         V4L2_CID_AUDIO_BALANCE,
212 #endif
213         V4L2_CID_AUDIO_MUTE,
214         0
215 };
216
217 static const u32 *ctrl_classes[] = {
218         cx231xx_user_ctrls,
219         NULL
220 };
221
222 /* ------------------------------------------------------------------
223         Video buffer and parser functions
224    ------------------------------------------------------------------*/
225
226 /*
227  * Announces that a buffer were filled and request the next
228  */
229 static inline void buffer_filled(struct cx231xx *dev,
230                                  struct cx231xx_dmaqueue *dma_q,
231                                  struct cx231xx_buffer *buf)
232 {
233         /* Advice that buffer was filled */
234         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
235         buf->vb.state = VIDEOBUF_DONE;
236         buf->vb.field_count++;
237         do_gettimeofday(&buf->vb.ts);
238
239         dev->video_mode.isoc_ctl.buf = NULL;
240
241         list_del(&buf->vb.queue);
242         wake_up(&buf->vb.done);
243 }
244
245 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
246 {
247         char *errmsg = "Unknown";
248
249         switch (status) {
250         case -ENOENT:
251                 errmsg = "unlinked synchronuously";
252                 break;
253         case -ECONNRESET:
254                 errmsg = "unlinked asynchronuously";
255                 break;
256         case -ENOSR:
257                 errmsg = "Buffer error (overrun)";
258                 break;
259         case -EPIPE:
260                 errmsg = "Stalled (device not responding)";
261                 break;
262         case -EOVERFLOW:
263                 errmsg = "Babble (bad cable?)";
264                 break;
265         case -EPROTO:
266                 errmsg = "Bit-stuff error (bad cable?)";
267                 break;
268         case -EILSEQ:
269                 errmsg = "CRC/Timeout (could be anything)";
270                 break;
271         case -ETIME:
272                 errmsg = "Device does not respond";
273                 break;
274         }
275         if (packet < 0) {
276                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
277         } else {
278                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
279                                 packet, status, errmsg);
280         }
281 }
282
283 /*
284  * video-buf generic routine to get the next available buffer
285  */
286 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
287                                 struct cx231xx_buffer **buf)
288 {
289         struct cx231xx_video_mode *vmode =
290             container_of(dma_q, struct cx231xx_video_mode, vidq);
291         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
292
293         char *outp;
294
295         if (list_empty(&dma_q->active)) {
296                 cx231xx_isocdbg("No active queue to serve\n");
297                 dev->video_mode.isoc_ctl.buf = NULL;
298                 *buf = NULL;
299                 return;
300         }
301
302         /* Get the next buffer */
303         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
304
305         /* Cleans up buffer - Usefull for testing for frame/URB loss */
306         outp = videobuf_to_vmalloc(&(*buf)->vb);
307         memset(outp, 0, (*buf)->vb.size);
308
309         dev->video_mode.isoc_ctl.buf = *buf;
310
311         return;
312 }
313
314 /*
315  * Controls the isoc copy of each urb packet
316  */
317 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
318 {
319         struct cx231xx_buffer *buf;
320         struct cx231xx_dmaqueue *dma_q = urb->context;
321         unsigned char *outp = NULL;
322         int i, rc = 1;
323         unsigned char *p_buffer;
324         u32 bytes_parsed = 0, buffer_size = 0;
325         u8 sav_eav = 0;
326
327         if (!dev)
328                 return 0;
329
330         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
331                 return 0;
332
333         if (urb->status < 0) {
334                 print_err_status(dev, -1, urb->status);
335                 if (urb->status == -ENOENT)
336                         return 0;
337         }
338
339         buf = dev->video_mode.isoc_ctl.buf;
340         if (buf != NULL)
341                 outp = videobuf_to_vmalloc(&buf->vb);
342
343         for (i = 0; i < urb->number_of_packets; i++) {
344                 int status = urb->iso_frame_desc[i].status;
345
346                 if (status < 0) {
347                         print_err_status(dev, i, status);
348                         if (urb->iso_frame_desc[i].status != -EPROTO)
349                                 continue;
350                 }
351
352                 if (urb->iso_frame_desc[i].actual_length <= 0) {
353                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
354                         continue;
355                 }
356                 if (urb->iso_frame_desc[i].actual_length >
357                     dev->video_mode.max_pkt_size) {
358                         cx231xx_isocdbg("packet bigger than packet size");
359                         continue;
360                 }
361
362                 /*  get buffer pointer and length */
363                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
364                 buffer_size = urb->iso_frame_desc[i].actual_length;
365                 bytes_parsed = 0;
366
367                 if (dma_q->is_partial_line) {
368                         /* Handle the case of a partial line */
369                         sav_eav = dma_q->last_sav;
370                 } else {
371                         /* Check for a SAV/EAV overlapping
372                                 the buffer boundary */
373                         sav_eav =
374                             cx231xx_find_boundary_SAV_EAV(p_buffer,
375                                                           dma_q->partial_buf,
376                                                           &bytes_parsed);
377                 }
378
379                 sav_eav &= 0xF0;
380                 /* Get the first line if we have some portion of an SAV/EAV from
381                    the last buffer or a partial line  */
382                 if (sav_eav) {
383                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
384                                 sav_eav,        /* SAV/EAV */
385                                 p_buffer + bytes_parsed,        /* p_buffer */
386                                 buffer_size - bytes_parsed);/* buf size */
387                 }
388
389                 /* Now parse data that is completely in this buffer */
390                 /* dma_q->is_partial_line = 0;  */
391
392                 while (bytes_parsed < buffer_size) {
393                         u32 bytes_used = 0;
394
395                         sav_eav = cx231xx_find_next_SAV_EAV(
396                                 p_buffer + bytes_parsed,        /* p_buffer */
397                                 buffer_size - bytes_parsed,     /* buf size */
398                                 &bytes_used);/* bytes used to get SAV/EAV */
399
400                         bytes_parsed += bytes_used;
401
402                         sav_eav &= 0xF0;
403                         if (sav_eav && (bytes_parsed < buffer_size)) {
404                                 bytes_parsed += cx231xx_get_video_line(dev,
405                                         dma_q, sav_eav, /* SAV/EAV */
406                                         p_buffer + bytes_parsed,/* p_buffer */
407                                         buffer_size - bytes_parsed);/*buf size*/
408                         }
409                 }
410
411                 /* Save the last four bytes of the buffer so we can check the
412                    buffer boundary condition next time */
413                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
414                 bytes_parsed = 0;
415
416         }
417         return rc;
418 }
419
420 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
421                                  u32 *p_bytes_used)
422 {
423         u32 bytes_used;
424         u8 boundary_bytes[8];
425         u8 sav_eav = 0;
426
427         *p_bytes_used = 0;
428
429         /* Create an array of the last 4 bytes of the last buffer and the first
430            4 bytes of the current buffer. */
431
432         memcpy(boundary_bytes, partial_buf, 4);
433         memcpy(boundary_bytes + 4, p_buffer, 4);
434
435         /* Check for the SAV/EAV in the boundary buffer */
436         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
437                                             &bytes_used);
438
439         if (sav_eav) {
440                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
441                    only those used in the new buffer */
442                 *p_bytes_used = bytes_used - 4;
443         }
444
445         return sav_eav;
446 }
447
448 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
449 {
450         u32 i;
451         u8 sav_eav = 0;
452
453         /*
454          * Don't search if the buffer size is less than 4.  It causes a page
455          * fault since buffer_size - 4 evaluates to a large number in that
456          * case.
457          */
458         if (buffer_size < 4) {
459                 *p_bytes_used = buffer_size;
460                 return 0;
461         }
462
463         for (i = 0; i < (buffer_size - 3); i++) {
464
465                 if ((p_buffer[i] == 0xFF) &&
466                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
467
468                         *p_bytes_used = i + 4;
469                         sav_eav = p_buffer[i + 3];
470                         return sav_eav;
471                 }
472         }
473
474         *p_bytes_used = buffer_size;
475         return 0;
476 }
477
478 u32 cx231xx_get_video_line(struct cx231xx *dev,
479                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
480                            u8 *p_buffer, u32 buffer_size)
481 {
482         u32 bytes_copied = 0;
483         int current_field = -1;
484
485         switch (sav_eav) {
486         case SAV_ACTIVE_VIDEO_FIELD1:
487                 /* looking for skipped line which occurred in PAL 720x480 mode.
488                    In this case, there will be no active data contained
489                    between the SAV and EAV */
490                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
491                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
492                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
493                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
494                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
495                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
496                         return bytes_copied;
497                 current_field = 1;
498                 break;
499
500         case SAV_ACTIVE_VIDEO_FIELD2:
501                 /* looking for skipped line which occurred in PAL 720x480 mode.
502                    In this case, there will be no active data contained between
503                    the SAV and EAV */
504                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
505                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
506                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
507                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
508                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
509                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
510                         return bytes_copied;
511                 current_field = 2;
512                 break;
513         }
514
515         dma_q->last_sav = sav_eav;
516
517         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
518                                                buffer_size, current_field);
519
520         return bytes_copied;
521 }
522
523 u32 cx231xx_copy_video_line(struct cx231xx *dev,
524                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
525                             u32 length, int field_number)
526 {
527         u32 bytes_to_copy;
528         struct cx231xx_buffer *buf;
529         u32 _line_size = dev->width * 2;
530
531         if (dma_q->current_field != field_number)
532                 cx231xx_reset_video_buffer(dev, dma_q);
533
534         /* get the buffer pointer */
535         buf = dev->video_mode.isoc_ctl.buf;
536
537         /* Remember the field number for next time */
538         dma_q->current_field = field_number;
539
540         bytes_to_copy = dma_q->bytes_left_in_line;
541         if (bytes_to_copy > length)
542                 bytes_to_copy = length;
543
544         if (dma_q->lines_completed >= dma_q->lines_per_field) {
545                 dma_q->bytes_left_in_line -= bytes_to_copy;
546                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
547                                           0 : 1;
548                 return 0;
549         }
550
551         dma_q->is_partial_line = 1;
552
553         /* If we don't have a buffer, just return the number of bytes we would
554            have copied if we had a buffer. */
555         if (!buf) {
556                 dma_q->bytes_left_in_line -= bytes_to_copy;
557                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
558                                          ? 0 : 1;
559                 return bytes_to_copy;
560         }
561
562         /* copy the data to video buffer */
563         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
564
565         dma_q->pos += bytes_to_copy;
566         dma_q->bytes_left_in_line -= bytes_to_copy;
567
568         if (dma_q->bytes_left_in_line == 0) {
569                 dma_q->bytes_left_in_line = _line_size;
570                 dma_q->lines_completed++;
571                 dma_q->is_partial_line = 0;
572
573                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
574                         buffer_filled(dev, dma_q, buf);
575
576                         dma_q->pos = 0;
577                         buf = NULL;
578                         dma_q->lines_completed = 0;
579                 }
580         }
581
582         return bytes_to_copy;
583 }
584
585 void cx231xx_reset_video_buffer(struct cx231xx *dev,
586                                 struct cx231xx_dmaqueue *dma_q)
587 {
588         struct cx231xx_buffer *buf;
589
590         /* handle the switch from field 1 to field 2 */
591         if (dma_q->current_field == 1) {
592                 if (dma_q->lines_completed >= dma_q->lines_per_field)
593                         dma_q->field1_done = 1;
594                 else
595                         dma_q->field1_done = 0;
596         }
597
598         buf = dev->video_mode.isoc_ctl.buf;
599
600         if (buf == NULL) {
601                 u8 *outp = NULL;
602                 /* first try to get the buffer */
603                 get_next_buf(dma_q, &buf);
604
605                 if (buf)
606                         outp = videobuf_to_vmalloc(&buf->vb);
607
608                 dma_q->pos = 0;
609                 dma_q->field1_done = 0;
610                 dma_q->current_field = -1;
611         }
612
613         /* reset the counters */
614         dma_q->bytes_left_in_line = dev->width << 1;
615         dma_q->lines_completed = 0;
616 }
617
618 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
619                     u8 *p_buffer, u32 bytes_to_copy)
620 {
621         u8 *p_out_buffer = NULL;
622         u32 current_line_bytes_copied = 0;
623         struct cx231xx_buffer *buf;
624         u32 _line_size = dev->width << 1;
625         void *startwrite;
626         int offset, lencopy;
627
628         buf = dev->video_mode.isoc_ctl.buf;
629
630         if (buf == NULL)
631                 return -1;
632
633         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
634
635         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
636
637         /* Offset field 2 one line from the top of the buffer */
638         offset = (dma_q->current_field == 1) ? 0 : _line_size;
639
640         /* Offset for field 2 */
641         startwrite = p_out_buffer + offset;
642
643         /* lines already completed in the current field */
644         startwrite += (dma_q->lines_completed * _line_size * 2);
645
646         /* bytes already completed in the current line */
647         startwrite += current_line_bytes_copied;
648
649         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
650                   bytes_to_copy : dma_q->bytes_left_in_line;
651
652         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
653                 return 0;
654
655         /* The below copies the UYVY data straight into video buffer */
656         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
657
658         return 0;
659 }
660
661 void cx231xx_swab(u16 *from, u16 *to, u16 len)
662 {
663         u16 i;
664
665         if (len <= 0)
666                 return;
667
668         for (i = 0; i < len / 2; i++)
669                 to[i] = (from[i] << 8) | (from[i] >> 8);
670 }
671
672 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
673 {
674         u8 buffer_complete = 0;
675
676         /* Dual field stream */
677         buffer_complete = ((dma_q->current_field == 2) &&
678                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
679                             dma_q->field1_done);
680
681         return buffer_complete;
682 }
683
684 /* ------------------------------------------------------------------
685         Videobuf operations
686    ------------------------------------------------------------------*/
687
688 static int
689 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
690 {
691         struct cx231xx_fh *fh = vq->priv_data;
692         struct cx231xx *dev = fh->dev;
693         struct v4l2_frequency f;
694
695         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
696         if (0 == *count)
697                 *count = CX231XX_DEF_BUF;
698
699         if (*count < CX231XX_MIN_BUF)
700                 *count = CX231XX_MIN_BUF;
701
702         /* Ask tuner to go to analog mode */
703         memset(&f, 0, sizeof(f));
704         f.frequency = dev->ctl_freq;
705         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
706
707         call_all(dev, tuner, s_frequency, &f);
708
709         return 0;
710 }
711
712 /* This is called *without* dev->slock held; please keep it that way */
713 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
714 {
715         struct cx231xx_fh *fh = vq->priv_data;
716         struct cx231xx *dev = fh->dev;
717         unsigned long flags = 0;
718
719         if (in_interrupt())
720                 BUG();
721
722         /* We used to wait for the buffer to finish here, but this didn't work
723            because, as we were keeping the state as VIDEOBUF_QUEUED,
724            videobuf_queue_cancel marked it as finished for us.
725            (Also, it could wedge forever if the hardware was misconfigured.)
726
727            This should be safe; by the time we get here, the buffer isn't
728            queued anymore. If we ever start marking the buffers as
729            VIDEOBUF_ACTIVE, it won't be, though.
730          */
731         spin_lock_irqsave(&dev->video_mode.slock, flags);
732         if (dev->video_mode.isoc_ctl.buf == buf)
733                 dev->video_mode.isoc_ctl.buf = NULL;
734         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
735
736         videobuf_vmalloc_free(&buf->vb);
737         buf->vb.state = VIDEOBUF_NEEDS_INIT;
738 }
739
740 static int
741 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
742                enum v4l2_field field)
743 {
744         struct cx231xx_fh *fh = vq->priv_data;
745         struct cx231xx_buffer *buf =
746             container_of(vb, struct cx231xx_buffer, vb);
747         struct cx231xx *dev = fh->dev;
748         int rc = 0, urb_init = 0;
749
750         /* The only currently supported format is 16 bits/pixel */
751         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
752                         + 7) >> 3;
753         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
754                 return -EINVAL;
755
756         buf->vb.width = dev->width;
757         buf->vb.height = dev->height;
758         buf->vb.field = field;
759
760         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
761                 rc = videobuf_iolock(vq, &buf->vb, NULL);
762                 if (rc < 0)
763                         goto fail;
764         }
765
766         if (!dev->video_mode.isoc_ctl.num_bufs)
767                 urb_init = 1;
768
769         if (urb_init) {
770                 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
771                                        CX231XX_NUM_BUFS,
772                                        dev->video_mode.max_pkt_size,
773                                        cx231xx_isoc_copy);
774                 if (rc < 0)
775                         goto fail;
776         }
777
778         buf->vb.state = VIDEOBUF_PREPARED;
779         return 0;
780
781 fail:
782         free_buffer(vq, buf);
783         return rc;
784 }
785
786 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
787 {
788         struct cx231xx_buffer *buf =
789             container_of(vb, struct cx231xx_buffer, vb);
790         struct cx231xx_fh *fh = vq->priv_data;
791         struct cx231xx *dev = fh->dev;
792         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
793
794         buf->vb.state = VIDEOBUF_QUEUED;
795         list_add_tail(&buf->vb.queue, &vidq->active);
796
797 }
798
799 static void buffer_release(struct videobuf_queue *vq,
800                            struct videobuf_buffer *vb)
801 {
802         struct cx231xx_buffer *buf =
803             container_of(vb, struct cx231xx_buffer, vb);
804         struct cx231xx_fh *fh = vq->priv_data;
805         struct cx231xx *dev = (struct cx231xx *)fh->dev;
806
807         cx231xx_isocdbg("cx231xx: called buffer_release\n");
808
809         free_buffer(vq, buf);
810 }
811
812 static struct videobuf_queue_ops cx231xx_video_qops = {
813         .buf_setup = buffer_setup,
814         .buf_prepare = buffer_prepare,
815         .buf_queue = buffer_queue,
816         .buf_release = buffer_release,
817 };
818
819 /*********************  v4l2 interface  **************************************/
820
821 void video_mux(struct cx231xx *dev, int index)
822 {
823         dev->video_input = index;
824         dev->ctl_ainput = INPUT(index)->amux;
825
826         cx231xx_set_video_input_mux(dev, index);
827
828         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
829
830         cx231xx_set_audio_input(dev, dev->ctl_ainput);
831
832         cx231xx_info("video_mux : %d\n", index);
833
834         /* do mode control overrides if required */
835         cx231xx_do_mode_ctrl_overrides(dev);
836 }
837
838 /* Usage lock check functions */
839 static int res_get(struct cx231xx_fh *fh)
840 {
841         struct cx231xx *dev = fh->dev;
842         int rc = 0;
843
844         /* This instance already has stream_on */
845         if (fh->stream_on)
846                 return rc;
847
848         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
849                 if (dev->stream_on)
850                         return -EBUSY;
851                 dev->stream_on = 1;
852         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
853                 if (dev->vbi_stream_on)
854                         return -EBUSY;
855                 dev->vbi_stream_on = 1;
856         } else
857                 return -EINVAL;
858
859         fh->stream_on = 1;
860
861         return rc;
862 }
863
864 static int res_check(struct cx231xx_fh *fh)
865 {
866         return fh->stream_on;
867 }
868
869 static void res_free(struct cx231xx_fh *fh)
870 {
871         struct cx231xx *dev = fh->dev;
872
873         fh->stream_on = 0;
874
875         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
876                 dev->stream_on = 0;
877         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
878                 dev->vbi_stream_on = 0;
879 }
880
881 static int check_dev(struct cx231xx *dev)
882 {
883         if (dev->state & DEV_DISCONNECTED) {
884                 cx231xx_errdev("v4l2 ioctl: device not present\n");
885                 return -ENODEV;
886         }
887
888         if (dev->state & DEV_MISCONFIGURED) {
889                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
890                                "close and open it again\n");
891                 return -EIO;
892         }
893         return 0;
894 }
895
896 static void get_scale(struct cx231xx *dev,
897                       unsigned int width, unsigned int height,
898                       unsigned int *hscale, unsigned int *vscale)
899 {
900         unsigned int maxw = norm_maxw(dev);
901         unsigned int maxh = norm_maxh(dev);
902
903         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
904         if (*hscale >= 0x4000)
905                 *hscale = 0x3fff;
906
907         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
908         if (*vscale >= 0x4000)
909                 *vscale = 0x3fff;
910 }
911
912 /* ------------------------------------------------------------------
913         IOCTL vidioc handling
914    ------------------------------------------------------------------*/
915
916 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
917                                 struct v4l2_format *f)
918 {
919         struct cx231xx_fh *fh = priv;
920         struct cx231xx *dev = fh->dev;
921
922         mutex_lock(&dev->lock);
923
924         f->fmt.pix.width = dev->width;
925         f->fmt.pix.height = dev->height;
926         f->fmt.pix.pixelformat = dev->format->fourcc;
927         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
928         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
929         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
930
931         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
932
933         mutex_unlock(&dev->lock);
934
935         return 0;
936 }
937
938 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
939 {
940         unsigned int i;
941
942         for (i = 0; i < ARRAY_SIZE(format); i++)
943                 if (format[i].fourcc == fourcc)
944                         return &format[i];
945
946         return NULL;
947 }
948
949 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
950                                   struct v4l2_format *f)
951 {
952         struct cx231xx_fh *fh = priv;
953         struct cx231xx *dev = fh->dev;
954         unsigned int width = f->fmt.pix.width;
955         unsigned int height = f->fmt.pix.height;
956         unsigned int maxw = norm_maxw(dev);
957         unsigned int maxh = norm_maxh(dev);
958         unsigned int hscale, vscale;
959         struct cx231xx_fmt *fmt;
960
961         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
962         if (!fmt) {
963                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
964                                  f->fmt.pix.pixelformat);
965                 return -EINVAL;
966         }
967
968         /* width must even because of the YUYV format
969            height must be even because of interlacing */
970         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
971
972         get_scale(dev, width, height, &hscale, &vscale);
973
974         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
975         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
976
977         f->fmt.pix.width = width;
978         f->fmt.pix.height = height;
979         f->fmt.pix.pixelformat = fmt->fourcc;
980         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
981         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
982         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
983         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
984
985         return 0;
986 }
987
988 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
989                                 struct v4l2_format *f)
990 {
991         struct cx231xx_fh *fh = priv;
992         struct cx231xx *dev = fh->dev;
993         int rc;
994         struct cx231xx_fmt *fmt;
995
996         rc = check_dev(dev);
997         if (rc < 0)
998                 return rc;
999
1000         mutex_lock(&dev->lock);
1001
1002         vidioc_try_fmt_vid_cap(file, priv, f);
1003
1004         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1005         if (!fmt) {
1006                 rc = -EINVAL;
1007                 goto out;
1008         }
1009
1010         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1011                 cx231xx_errdev("%s queue busy\n", __func__);
1012                 rc = -EBUSY;
1013                 goto out;
1014         }
1015
1016         if (dev->stream_on && !fh->stream_on) {
1017                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1018                 rc = -EBUSY;
1019                 goto out;
1020         }
1021
1022         /* set new image size */
1023         dev->width = f->fmt.pix.width;
1024         dev->height = f->fmt.pix.height;
1025         dev->format = fmt;
1026         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1027
1028         call_all(dev, video, s_fmt, f);
1029
1030         /* Set the correct alternate setting for this resolution */
1031         cx231xx_resolution_set(dev);
1032
1033 out:
1034         mutex_unlock(&dev->lock);
1035         return rc;
1036 }
1037
1038 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1039 {
1040         struct cx231xx_fh *fh = priv;
1041         struct cx231xx *dev = fh->dev;
1042
1043         *id = dev->norm;
1044         return 0;
1045 }
1046
1047 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1048 {
1049         struct cx231xx_fh *fh = priv;
1050         struct cx231xx *dev = fh->dev;
1051         struct v4l2_format f;
1052         int rc;
1053
1054         rc = check_dev(dev);
1055         if (rc < 0)
1056                 return rc;
1057
1058         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1059
1060         mutex_lock(&dev->lock);
1061         dev->norm = *norm;
1062
1063         /* Adjusts width/height, if needed */
1064         f.fmt.pix.width = dev->width;
1065         f.fmt.pix.height = dev->height;
1066         vidioc_try_fmt_vid_cap(file, priv, &f);
1067
1068         /* set new image size */
1069         dev->width = f.fmt.pix.width;
1070         dev->height = f.fmt.pix.height;
1071         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1072
1073         call_all(dev, core, s_std, dev->norm);
1074
1075         mutex_unlock(&dev->lock);
1076
1077         cx231xx_resolution_set(dev);
1078
1079         /* do mode control overrides */
1080         cx231xx_do_mode_ctrl_overrides(dev);
1081
1082         return 0;
1083 }
1084
1085 static const char *iname[] = {
1086         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1087         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1088         [CX231XX_VMUX_TELEVISION] = "Television",
1089         [CX231XX_VMUX_CABLE]      = "Cable TV",
1090         [CX231XX_VMUX_DVB]        = "DVB",
1091         [CX231XX_VMUX_DEBUG]      = "for debug only",
1092 };
1093
1094 static int vidioc_enum_input(struct file *file, void *priv,
1095                              struct v4l2_input *i)
1096 {
1097         struct cx231xx_fh *fh = priv;
1098         struct cx231xx *dev = fh->dev;
1099         unsigned int n;
1100
1101         n = i->index;
1102         if (n >= MAX_CX231XX_INPUT)
1103                 return -EINVAL;
1104         if (0 == INPUT(n)->type)
1105                 return -EINVAL;
1106
1107         i->index = n;
1108         i->type = V4L2_INPUT_TYPE_CAMERA;
1109
1110         strcpy(i->name, iname[INPUT(n)->type]);
1111
1112         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1113             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1114                 i->type = V4L2_INPUT_TYPE_TUNER;
1115
1116         i->std = dev->vdev->tvnorms;
1117
1118         return 0;
1119 }
1120
1121 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1122 {
1123         struct cx231xx_fh *fh = priv;
1124         struct cx231xx *dev = fh->dev;
1125
1126         *i = dev->video_input;
1127
1128         return 0;
1129 }
1130
1131 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1132 {
1133         struct cx231xx_fh *fh = priv;
1134         struct cx231xx *dev = fh->dev;
1135         int rc;
1136
1137         rc = check_dev(dev);
1138         if (rc < 0)
1139                 return rc;
1140
1141         if (i >= MAX_CX231XX_INPUT)
1142                 return -EINVAL;
1143         if (0 == INPUT(i)->type)
1144                 return -EINVAL;
1145
1146         mutex_lock(&dev->lock);
1147
1148         video_mux(dev, i);
1149
1150         mutex_unlock(&dev->lock);
1151         return 0;
1152 }
1153
1154 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1155 {
1156         struct cx231xx_fh *fh = priv;
1157         struct cx231xx *dev = fh->dev;
1158
1159         switch (a->index) {
1160         case CX231XX_AMUX_VIDEO:
1161                 strcpy(a->name, "Television");
1162                 break;
1163         case CX231XX_AMUX_LINE_IN:
1164                 strcpy(a->name, "Line In");
1165                 break;
1166         default:
1167                 return -EINVAL;
1168         }
1169
1170         a->index = dev->ctl_ainput;
1171         a->capability = V4L2_AUDCAP_STEREO;
1172
1173         return 0;
1174 }
1175
1176 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1177 {
1178         struct cx231xx_fh *fh = priv;
1179         struct cx231xx *dev = fh->dev;
1180         int status = 0;
1181
1182         /* Doesn't allow manual routing */
1183         if (a->index != dev->ctl_ainput)
1184                 return -EINVAL;
1185
1186         dev->ctl_ainput = INPUT(a->index)->amux;
1187         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1188
1189         return status;
1190 }
1191
1192 static int vidioc_queryctrl(struct file *file, void *priv,
1193                             struct v4l2_queryctrl *qc)
1194 {
1195         struct cx231xx_fh *fh = priv;
1196         struct cx231xx *dev = fh->dev;
1197         int id = qc->id;
1198         int i;
1199         int rc;
1200
1201         rc = check_dev(dev);
1202         if (rc < 0)
1203                 return rc;
1204
1205         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1206         if (unlikely(qc->id == 0))
1207                 return -EINVAL;
1208
1209         memset(qc, 0, sizeof(*qc));
1210
1211         qc->id = id;
1212
1213         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1214                 return -EINVAL;
1215
1216         for (i = 0; i < CX231XX_CTLS; i++)
1217                 if (cx231xx_ctls[i].v.id == qc->id)
1218                         break;
1219
1220         if (i == CX231XX_CTLS) {
1221                 *qc = no_ctl;
1222                 return 0;
1223         }
1224         *qc = cx231xx_ctls[i].v;
1225
1226         mutex_lock(&dev->lock);
1227         call_all(dev, core, queryctrl, qc);
1228         mutex_unlock(&dev->lock);
1229
1230         if (qc->type)
1231                 return 0;
1232         else
1233                 return -EINVAL;
1234 }
1235
1236 static int vidioc_g_ctrl(struct file *file, void *priv,
1237                          struct v4l2_control *ctrl)
1238 {
1239         struct cx231xx_fh *fh = priv;
1240         struct cx231xx *dev = fh->dev;
1241         int rc;
1242
1243         rc = check_dev(dev);
1244         if (rc < 0)
1245                 return rc;
1246
1247         mutex_lock(&dev->lock);
1248         call_all(dev, core, g_ctrl, ctrl);
1249         mutex_unlock(&dev->lock);
1250         return rc;
1251 }
1252
1253 static int vidioc_s_ctrl(struct file *file, void *priv,
1254                          struct v4l2_control *ctrl)
1255 {
1256         struct cx231xx_fh *fh = priv;
1257         struct cx231xx *dev = fh->dev;
1258         int rc;
1259
1260         rc = check_dev(dev);
1261         if (rc < 0)
1262                 return rc;
1263
1264         mutex_lock(&dev->lock);
1265         call_all(dev, core, s_ctrl, ctrl);
1266         mutex_unlock(&dev->lock);
1267         return rc;
1268 }
1269
1270 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1271 {
1272         struct cx231xx_fh *fh = priv;
1273         struct cx231xx *dev = fh->dev;
1274         int rc;
1275
1276         rc = check_dev(dev);
1277         if (rc < 0)
1278                 return rc;
1279
1280         if (0 != t->index)
1281                 return -EINVAL;
1282
1283         strcpy(t->name, "Tuner");
1284
1285         t->type = V4L2_TUNER_ANALOG_TV;
1286         t->capability = V4L2_TUNER_CAP_NORM;
1287         t->rangehigh = 0xffffffffUL;
1288         t->signal = 0xffff;     /* LOCKED */
1289
1290         return 0;
1291 }
1292
1293 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1294 {
1295         struct cx231xx_fh *fh = priv;
1296         struct cx231xx *dev = fh->dev;
1297         int rc;
1298
1299         rc = check_dev(dev);
1300         if (rc < 0)
1301                 return rc;
1302
1303         if (0 != t->index)
1304                 return -EINVAL;
1305 #if 0
1306         mutex_lock(&dev->lock);
1307         call_all(dev, tuner, s_tuner, t);
1308         mutex_unlock(&dev->lock);
1309 #endif
1310         return 0;
1311 }
1312
1313 static int vidioc_g_frequency(struct file *file, void *priv,
1314                               struct v4l2_frequency *f)
1315 {
1316         struct cx231xx_fh *fh = priv;
1317         struct cx231xx *dev = fh->dev;
1318
1319         mutex_lock(&dev->lock);
1320         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1321         f->frequency = dev->ctl_freq;
1322
1323         call_all(dev, tuner, g_frequency, f);
1324
1325         mutex_unlock(&dev->lock);
1326
1327         return 0;
1328 }
1329
1330 static int vidioc_s_frequency(struct file *file, void *priv,
1331                               struct v4l2_frequency *f)
1332 {
1333         struct cx231xx_fh *fh = priv;
1334         struct cx231xx *dev = fh->dev;
1335         int rc;
1336
1337         rc = check_dev(dev);
1338         if (rc < 0)
1339                 return rc;
1340
1341         if (0 != f->tuner)
1342                 return -EINVAL;
1343
1344         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1345                 return -EINVAL;
1346         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1347                 return -EINVAL;
1348
1349         /* set pre channel change settings in DIF first */
1350         rc = cx231xx_tuner_pre_channel_change(dev);
1351
1352         mutex_lock(&dev->lock);
1353
1354         dev->ctl_freq = f->frequency;
1355
1356         if (dev->tuner_type == TUNER_XC5000) {
1357                 if (dev->cx231xx_set_analog_freq != NULL)
1358                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1359         } else
1360                 call_all(dev, tuner, s_frequency, f);
1361
1362         mutex_unlock(&dev->lock);
1363
1364         /* set post channel change settings in DIF first */
1365         rc = cx231xx_tuner_post_channel_change(dev);
1366
1367         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1368
1369         return rc;
1370 }
1371
1372 #ifdef CONFIG_VIDEO_ADV_DEBUG
1373
1374 /*
1375   -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1376                                 chip=<chip>[,min=<addr>,max=<addr>]
1377                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1378   -r, --set-register=type=<host/i2cdrv/i2caddr>,
1379                                 chip=<chip>,reg=<addr>,val=<val>
1380                      set the register [VIDIOC_DBG_S_REGISTER]
1381
1382   if type == host, then <chip> is the hosts chip ID (default 0)
1383   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1384   if type == i2caddr, then <chip> is the 7-bit I2C address
1385 */
1386
1387 static int vidioc_g_register(struct file *file, void *priv,
1388                              struct v4l2_dbg_register *reg)
1389 {
1390         struct cx231xx_fh *fh = priv;
1391         struct cx231xx *dev = fh->dev;
1392         int ret = 0;
1393         u8 value[4] = { 0, 0, 0, 0 };
1394         u32 data = 0;
1395
1396         switch (reg->match.type) {
1397         case V4L2_CHIP_MATCH_HOST:
1398                 switch (reg->match.addr) {
1399                 case 0: /* Cx231xx - internal registers */
1400                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1401                                                   (u16)reg->reg, value, 4);
1402                         reg->val = value[0] | value[1] << 8 |
1403                                    value[2] << 16 | value[3] << 24;
1404                         break;
1405                 case 1: /* AFE - read byte */
1406                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1407                                                   (u16)reg->reg, 2, &data, 1);
1408                         reg->val = le32_to_cpu(data & 0xff);
1409                         break;
1410                 case 14: /* AFE - read dword */
1411                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1412                                                   (u16)reg->reg, 2, &data, 4);
1413                         reg->val = le32_to_cpu(data);
1414                         break;
1415                 case 2: /* Video Block - read byte */
1416                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1417                                                   (u16)reg->reg, 2, &data, 1);
1418                         reg->val = le32_to_cpu(data & 0xff);
1419                         break;
1420                 case 24: /* Video Block - read dword */
1421                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1422                                                   (u16)reg->reg, 2, &data, 4);
1423                         reg->val = le32_to_cpu(data);
1424                         break;
1425                 case 3: /* I2S block - read byte */
1426                         ret = cx231xx_read_i2c_data(dev,
1427                                                     I2S_BLK_DEVICE_ADDRESS,
1428                                                     (u16)reg->reg, 1,
1429                                                     &data, 1);
1430                         reg->val = le32_to_cpu(data & 0xff);
1431                         break;
1432                 case 34: /* I2S Block - read dword */
1433                         ret =
1434                             cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1435                                                   (u16)reg->reg, 1, &data, 4);
1436                         reg->val = le32_to_cpu(data);
1437                         break;
1438                 }
1439                 return ret < 0 ? ret : 0;
1440
1441         case V4L2_CHIP_MATCH_I2C_DRIVER:
1442                 call_all(dev, core, g_register, reg);
1443                 return 0;
1444         case V4L2_CHIP_MATCH_I2C_ADDR:
1445                 /* Not supported yet */
1446                 return -EINVAL;
1447         default:
1448                 if (!v4l2_chip_match_host(&reg->match))
1449                         return -EINVAL;
1450         }
1451
1452         mutex_lock(&dev->lock);
1453         call_all(dev, core, g_register, reg);
1454         mutex_unlock(&dev->lock);
1455
1456         return ret;
1457 }
1458
1459 static int vidioc_s_register(struct file *file, void *priv,
1460                              struct v4l2_dbg_register *reg)
1461 {
1462         struct cx231xx_fh *fh = priv;
1463         struct cx231xx *dev = fh->dev;
1464         int ret = 0;
1465         __le64 buf;
1466         u32 value;
1467         u8 data[4] = { 0, 0, 0, 0 };
1468
1469         buf = cpu_to_le64(reg->val);
1470
1471         switch (reg->match.type) {
1472         case V4L2_CHIP_MATCH_HOST:
1473                 {
1474                         value = (u32) buf & 0xffffffff;
1475
1476                         switch (reg->match.addr) {
1477                         case 0: /* cx231xx internal registers */
1478                                 data[0] = (u8) value;
1479                                 data[1] = (u8) (value >> 8);
1480                                 data[2] = (u8) (value >> 16);
1481                                 data[3] = (u8) (value >> 24);
1482                                 ret = cx231xx_write_ctrl_reg(dev,
1483                                                            VRT_SET_REGISTER,
1484                                                            (u16)reg->reg, data,
1485                                                            4);
1486                                 break;
1487                         case 1: /* AFE - read byte */
1488                                 ret = cx231xx_write_i2c_data(dev,
1489                                                         AFE_DEVICE_ADDRESS,
1490                                                         (u16)reg->reg, 2,
1491                                                         value, 1);
1492                                 break;
1493                         case 14: /* AFE - read dword */
1494                                 ret = cx231xx_write_i2c_data(dev,
1495                                                         AFE_DEVICE_ADDRESS,
1496                                                         (u16)reg->reg, 2,
1497                                                         value, 4);
1498                                 break;
1499                         case 2: /* Video Block - read byte */
1500                                 ret =
1501                                     cx231xx_write_i2c_data(dev,
1502                                                         VID_BLK_I2C_ADDRESS,
1503                                                         (u16)reg->reg, 2,
1504                                                         value, 1);
1505                                 break;
1506                         case 24: /* Video Block - read dword */
1507                                 ret =
1508                                     cx231xx_write_i2c_data(dev,
1509                                                         VID_BLK_I2C_ADDRESS,
1510                                                         (u16)reg->reg, 2,
1511                                                         value, 4);
1512                                 break;
1513                         case 3: /* I2S block - read byte */
1514                                 ret =
1515                                     cx231xx_write_i2c_data(dev,
1516                                                         I2S_BLK_DEVICE_ADDRESS,
1517                                                         (u16)reg->reg, 1,
1518                                                         value, 1);
1519                                 break;
1520                         case 34: /* I2S block - read dword */
1521                                 ret =
1522                                     cx231xx_write_i2c_data(dev,
1523                                                         I2S_BLK_DEVICE_ADDRESS,
1524                                                         (u16)reg->reg, 1,
1525                                                         value, 4);
1526                                 break;
1527                         }
1528                 }
1529                 return ret < 0 ? ret : 0;
1530
1531         default:
1532                 break;
1533         }
1534
1535         mutex_lock(&dev->lock);
1536         call_all(dev, core, s_register, reg);
1537         mutex_unlock(&dev->lock);
1538
1539         return ret;
1540 }
1541 #endif
1542
1543 static int vidioc_cropcap(struct file *file, void *priv,
1544                           struct v4l2_cropcap *cc)
1545 {
1546         struct cx231xx_fh *fh = priv;
1547         struct cx231xx *dev = fh->dev;
1548
1549         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1550                 return -EINVAL;
1551
1552         cc->bounds.left = 0;
1553         cc->bounds.top = 0;
1554         cc->bounds.width = dev->width;
1555         cc->bounds.height = dev->height;
1556         cc->defrect = cc->bounds;
1557         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1558         cc->pixelaspect.denominator = 59;
1559
1560         return 0;
1561 }
1562
1563 static int vidioc_streamon(struct file *file, void *priv,
1564                            enum v4l2_buf_type type)
1565 {
1566         struct cx231xx_fh *fh = priv;
1567         struct cx231xx *dev = fh->dev;
1568         int rc;
1569
1570         rc = check_dev(dev);
1571         if (rc < 0)
1572                 return rc;
1573
1574         mutex_lock(&dev->lock);
1575         rc = res_get(fh);
1576
1577         if (likely(rc >= 0))
1578                 rc = videobuf_streamon(&fh->vb_vidq);
1579
1580         call_all(dev, video, s_stream, 1);
1581
1582         mutex_unlock(&dev->lock);
1583
1584         return rc;
1585 }
1586
1587 static int vidioc_streamoff(struct file *file, void *priv,
1588                             enum v4l2_buf_type type)
1589 {
1590         struct cx231xx_fh *fh = priv;
1591         struct cx231xx *dev = fh->dev;
1592         int rc;
1593
1594         rc = check_dev(dev);
1595         if (rc < 0)
1596                 return rc;
1597
1598         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1599             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1600                 return -EINVAL;
1601         if (type != fh->type)
1602                 return -EINVAL;
1603
1604         mutex_lock(&dev->lock);
1605
1606         cx25840_call(dev, video, s_stream, 0);
1607
1608         videobuf_streamoff(&fh->vb_vidq);
1609         res_free(fh);
1610
1611         mutex_unlock(&dev->lock);
1612
1613         return 0;
1614 }
1615
1616 static int vidioc_querycap(struct file *file, void *priv,
1617                            struct v4l2_capability *cap)
1618 {
1619         struct cx231xx_fh *fh = priv;
1620         struct cx231xx *dev = fh->dev;
1621
1622         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1623         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1624         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1625
1626         cap->version = CX231XX_VERSION_CODE;
1627
1628         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1629 #if 0
1630                 V4L2_CAP_SLICED_VBI_CAPTURE |
1631 #endif
1632                 V4L2_CAP_VIDEO_CAPTURE  |
1633                 V4L2_CAP_AUDIO          |
1634                 V4L2_CAP_READWRITE      |
1635                 V4L2_CAP_STREAMING;
1636
1637         if (dev->tuner_type != TUNER_ABSENT)
1638                 cap->capabilities |= V4L2_CAP_TUNER;
1639
1640         return 0;
1641 }
1642
1643 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1644                                    struct v4l2_fmtdesc *f)
1645 {
1646         if (unlikely(f->index >= ARRAY_SIZE(format)))
1647                 return -EINVAL;
1648
1649         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1650         f->pixelformat = format[f->index].fourcc;
1651
1652         return 0;
1653 }
1654
1655 /* Sliced VBI ioctls */
1656 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1657                                        struct v4l2_format *f)
1658 {
1659         struct cx231xx_fh *fh = priv;
1660         struct cx231xx *dev = fh->dev;
1661         int rc;
1662
1663         rc = check_dev(dev);
1664         if (rc < 0)
1665                 return rc;
1666
1667         mutex_lock(&dev->lock);
1668
1669         f->fmt.sliced.service_set = 0;
1670
1671         call_all(dev, video, g_fmt, f);
1672
1673         if (f->fmt.sliced.service_set == 0)
1674                 rc = -EINVAL;
1675
1676         mutex_unlock(&dev->lock);
1677         return rc;
1678 }
1679
1680 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1681                                          struct v4l2_format *f)
1682 {
1683         struct cx231xx_fh *fh = priv;
1684         struct cx231xx *dev = fh->dev;
1685         int rc;
1686
1687         rc = check_dev(dev);
1688         if (rc < 0)
1689                 return rc;
1690
1691         mutex_lock(&dev->lock);
1692         call_all(dev, video, g_fmt, f);
1693         mutex_unlock(&dev->lock);
1694
1695         if (f->fmt.sliced.service_set == 0)
1696                 return -EINVAL;
1697
1698         return 0;
1699 }
1700
1701 /* RAW VBI ioctls */
1702
1703 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1704                                 struct v4l2_format *f)
1705 {
1706         struct cx231xx_fh *fh = priv;
1707         struct cx231xx *dev = fh->dev;
1708
1709         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1710             35468950 : 28636363;
1711         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1712         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1713         f->fmt.vbi.offset = 64 * 4;
1714         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1715             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1716         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1717             PAL_VBI_LINES : NTSC_VBI_LINES;
1718         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1719             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1720         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1721
1722         return 0;
1723
1724 }
1725
1726 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1727                                   struct v4l2_format *f)
1728 {
1729         struct cx231xx_fh *fh = priv;
1730         struct cx231xx *dev = fh->dev;
1731
1732         if (dev->vbi_stream_on && !fh->stream_on) {
1733                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1734                 return -EBUSY;
1735         }
1736
1737         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1738         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1739             35468950 : 28636363;
1740         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1741         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1742         f->fmt.vbi.offset = 244;
1743         f->fmt.vbi.flags = 0;
1744         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1745             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1746         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1747             PAL_VBI_LINES : NTSC_VBI_LINES;
1748         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1749             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1750         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1751
1752         return 0;
1753
1754 }
1755
1756 static int vidioc_reqbufs(struct file *file, void *priv,
1757                           struct v4l2_requestbuffers *rb)
1758 {
1759         struct cx231xx_fh *fh = priv;
1760         struct cx231xx *dev = fh->dev;
1761         int rc;
1762
1763         rc = check_dev(dev);
1764         if (rc < 0)
1765                 return rc;
1766
1767         return videobuf_reqbufs(&fh->vb_vidq, rb);
1768 }
1769
1770 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1771 {
1772         struct cx231xx_fh *fh = priv;
1773         struct cx231xx *dev = fh->dev;
1774         int rc;
1775
1776         rc = check_dev(dev);
1777         if (rc < 0)
1778                 return rc;
1779
1780         return videobuf_querybuf(&fh->vb_vidq, b);
1781 }
1782
1783 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1784 {
1785         struct cx231xx_fh *fh = priv;
1786         struct cx231xx *dev = fh->dev;
1787         int rc;
1788
1789         rc = check_dev(dev);
1790         if (rc < 0)
1791                 return rc;
1792
1793         return videobuf_qbuf(&fh->vb_vidq, b);
1794 }
1795
1796 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1797 {
1798         struct cx231xx_fh *fh = priv;
1799         struct cx231xx *dev = fh->dev;
1800         int rc;
1801
1802         rc = check_dev(dev);
1803         if (rc < 0)
1804                 return rc;
1805
1806         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1807 }
1808
1809 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1810 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1811 {
1812         struct cx231xx_fh *fh = priv;
1813
1814         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1815 }
1816 #endif
1817
1818 /* ----------------------------------------------------------- */
1819 /* RADIO ESPECIFIC IOCTLS                                      */
1820 /* ----------------------------------------------------------- */
1821
1822 static int radio_querycap(struct file *file, void *priv,
1823                           struct v4l2_capability *cap)
1824 {
1825         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1826
1827         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1828         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1829         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1830
1831         cap->version = CX231XX_VERSION_CODE;
1832         cap->capabilities = V4L2_CAP_TUNER;
1833         return 0;
1834 }
1835
1836 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1837 {
1838         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1839
1840         if (unlikely(t->index > 0))
1841                 return -EINVAL;
1842
1843         strcpy(t->name, "Radio");
1844         t->type = V4L2_TUNER_RADIO;
1845
1846         mutex_lock(&dev->lock);
1847         call_all(dev, tuner, s_tuner, t);
1848         mutex_unlock(&dev->lock);
1849
1850         return 0;
1851 }
1852
1853 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1854 {
1855         if (i->index != 0)
1856                 return -EINVAL;
1857         strcpy(i->name, "Radio");
1858         i->type = V4L2_INPUT_TYPE_TUNER;
1859
1860         return 0;
1861 }
1862
1863 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1864 {
1865         if (unlikely(a->index))
1866                 return -EINVAL;
1867
1868         strcpy(a->name, "Radio");
1869         return 0;
1870 }
1871
1872 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1873 {
1874         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1875
1876         if (0 != t->index)
1877                 return -EINVAL;
1878
1879         mutex_lock(&dev->lock);
1880         call_all(dev, tuner, s_tuner, t);
1881         mutex_unlock(&dev->lock);
1882
1883         return 0;
1884 }
1885
1886 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1887 {
1888         return 0;
1889 }
1890
1891 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1892 {
1893         return 0;
1894 }
1895
1896 static int radio_queryctrl(struct file *file, void *priv,
1897                            struct v4l2_queryctrl *c)
1898 {
1899         int i;
1900
1901         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1902                 return -EINVAL;
1903         if (c->id == V4L2_CID_AUDIO_MUTE) {
1904                 for (i = 0; i < CX231XX_CTLS; i++)
1905                         if (cx231xx_ctls[i].v.id == c->id)
1906                                 break;
1907                 *c = cx231xx_ctls[i].v;
1908         } else
1909                 *c = no_ctl;
1910         return 0;
1911 }
1912
1913 /*
1914  * cx231xx_v4l2_open()
1915  * inits the device and starts isoc transfer
1916  */
1917 static int cx231xx_v4l2_open(struct file *filp)
1918 {
1919         int errCode = 0, radio = 0;
1920         struct video_device *vdev = video_devdata(filp);
1921         struct cx231xx *dev = video_drvdata(filp);
1922         struct cx231xx_fh *fh;
1923         enum v4l2_buf_type fh_type = 0;
1924
1925         switch (vdev->vfl_type) {
1926         case VFL_TYPE_GRABBER:
1927                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1928                 break;
1929         case VFL_TYPE_VBI:
1930                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1931                 break;
1932         case VFL_TYPE_RADIO:
1933                 radio = 1;
1934                 break;
1935         }
1936
1937         mutex_lock(&dev->lock);
1938
1939         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1940                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1941                          dev->users);
1942
1943 #if 0
1944         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1945         if (errCode < 0) {
1946                 cx231xx_errdev
1947                     ("Device locked on digital mode. Can't open analog\n");
1948                 mutex_unlock(&dev->lock);
1949                 return -EBUSY;
1950         }
1951 #endif
1952
1953         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1954         if (!fh) {
1955                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1956                 mutex_unlock(&dev->lock);
1957                 return -ENOMEM;
1958         }
1959         fh->dev = dev;
1960         fh->radio = radio;
1961         fh->type = fh_type;
1962         filp->private_data = fh;
1963
1964         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1965                 dev->width = norm_maxw(dev);
1966                 dev->height = norm_maxh(dev);
1967                 dev->hscale = 0;
1968                 dev->vscale = 0;
1969
1970                 /* Power up in Analog TV mode */
1971                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1972
1973 #if 0
1974                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1975 #endif
1976                 cx231xx_resolution_set(dev);
1977
1978                 /* set video alternate setting */
1979                 cx231xx_set_video_alternate(dev);
1980
1981                 /* Needed, since GPIO might have disabled power of
1982                    some i2c device */
1983                 cx231xx_config_i2c(dev);
1984
1985                 /* device needs to be initialized before isoc transfer */
1986                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1987                 video_mux(dev, dev->video_input);
1988
1989         }
1990         if (fh->radio) {
1991                 cx231xx_videodbg("video_open: setting radio device\n");
1992
1993                 /* cx231xx_start_radio(dev); */
1994
1995                 call_all(dev, tuner, s_radio);
1996         }
1997
1998         dev->users++;
1999
2000         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2001                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2002                                             NULL, &dev->video_mode.slock,
2003                                             fh->type, V4L2_FIELD_INTERLACED,
2004                                             sizeof(struct cx231xx_buffer), fh);
2005         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2006                 /* Set the required alternate setting  VBI interface works in
2007                    Bulk mode only */
2008                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2009
2010                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2011                                             NULL, &dev->vbi_mode.slock,
2012                                             fh->type, V4L2_FIELD_SEQ_TB,
2013                                             sizeof(struct cx231xx_buffer), fh);
2014         }
2015
2016         mutex_unlock(&dev->lock);
2017
2018         return errCode;
2019 }
2020
2021 /*
2022  * cx231xx_realease_resources()
2023  * unregisters the v4l2,i2c and usb devices
2024  * called when the device gets disconected or at module unload
2025 */
2026 void cx231xx_release_analog_resources(struct cx231xx *dev)
2027 {
2028
2029         /*FIXME: I2C IR should be disconnected */
2030
2031         if (dev->radio_dev) {
2032                 if (video_is_registered(dev->radio_dev))
2033                         video_unregister_device(dev->radio_dev);
2034                 else
2035                         video_device_release(dev->radio_dev);
2036                 dev->radio_dev = NULL;
2037         }
2038         if (dev->vbi_dev) {
2039                 cx231xx_info("V4L2 device %s deregistered\n",
2040                              video_device_node_name(dev->vbi_dev));
2041                 if (video_is_registered(dev->vbi_dev))
2042                         video_unregister_device(dev->vbi_dev);
2043                 else
2044                         video_device_release(dev->vbi_dev);
2045                 dev->vbi_dev = NULL;
2046         }
2047         if (dev->vdev) {
2048                 cx231xx_info("V4L2 device %s deregistered\n",
2049                              video_device_node_name(dev->vdev));
2050                 if (video_is_registered(dev->vdev))
2051                         video_unregister_device(dev->vdev);
2052                 else
2053                         video_device_release(dev->vdev);
2054                 dev->vdev = NULL;
2055         }
2056 }
2057
2058 /*
2059  * cx231xx_v4l2_close()
2060  * stops streaming and deallocates all resources allocated by the v4l2
2061  * calls and ioctls
2062  */
2063 static int cx231xx_v4l2_close(struct file *filp)
2064 {
2065         struct cx231xx_fh *fh = filp->private_data;
2066         struct cx231xx *dev = fh->dev;
2067
2068         cx231xx_videodbg("users=%d\n", dev->users);
2069
2070         mutex_lock(&dev->lock);
2071
2072         if (res_check(fh))
2073                 res_free(fh);
2074
2075         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2076                 videobuf_stop(&fh->vb_vidq);
2077                 videobuf_mmap_free(&fh->vb_vidq);
2078
2079                 /* the device is already disconnect,
2080                    free the remaining resources */
2081                 if (dev->state & DEV_DISCONNECTED) {
2082                         cx231xx_release_resources(dev);
2083                         mutex_unlock(&dev->lock);
2084                         kfree(dev);
2085                         return 0;
2086                 }
2087
2088                 /* do this before setting alternate! */
2089                 cx231xx_uninit_vbi_isoc(dev);
2090
2091                 /* set alternate 0 */
2092                 if (!dev->vbi_or_sliced_cc_mode)
2093                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2094                 else
2095                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2096
2097                 kfree(fh);
2098                 dev->users--;
2099                 wake_up_interruptible_nr(&dev->open, 1);
2100                 mutex_unlock(&dev->lock);
2101                 return 0;
2102         }
2103
2104         if (dev->users == 1) {
2105                 videobuf_stop(&fh->vb_vidq);
2106                 videobuf_mmap_free(&fh->vb_vidq);
2107
2108                 /* the device is already disconnect,
2109                    free the remaining resources */
2110                 if (dev->state & DEV_DISCONNECTED) {
2111                         cx231xx_release_resources(dev);
2112                         mutex_unlock(&dev->lock);
2113                         kfree(dev);
2114                         return 0;
2115                 }
2116
2117                 /* Save some power by putting tuner to sleep */
2118                 call_all(dev, core, s_power, 0);
2119
2120                 /* do this before setting alternate! */
2121                 cx231xx_uninit_isoc(dev);
2122                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2123
2124                 /* set alternate 0 */
2125                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2126         }
2127         kfree(fh);
2128         dev->users--;
2129         wake_up_interruptible_nr(&dev->open, 1);
2130         mutex_unlock(&dev->lock);
2131         return 0;
2132 }
2133
2134 /*
2135  * cx231xx_v4l2_read()
2136  * will allocate buffers when called for the first time
2137  */
2138 static ssize_t
2139 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2140                   loff_t *pos)
2141 {
2142         struct cx231xx_fh *fh = filp->private_data;
2143         struct cx231xx *dev = fh->dev;
2144         int rc;
2145
2146         rc = check_dev(dev);
2147         if (rc < 0)
2148                 return rc;
2149
2150         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2151             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2152                 mutex_lock(&dev->lock);
2153                 rc = res_get(fh);
2154                 mutex_unlock(&dev->lock);
2155
2156                 if (unlikely(rc < 0))
2157                         return rc;
2158
2159                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2160                                             filp->f_flags & O_NONBLOCK);
2161         }
2162         return 0;
2163 }
2164
2165 /*
2166  * cx231xx_v4l2_poll()
2167  * will allocate buffers when called for the first time
2168  */
2169 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2170 {
2171         struct cx231xx_fh *fh = filp->private_data;
2172         struct cx231xx *dev = fh->dev;
2173         int rc;
2174
2175         rc = check_dev(dev);
2176         if (rc < 0)
2177                 return rc;
2178
2179         mutex_lock(&dev->lock);
2180         rc = res_get(fh);
2181         mutex_unlock(&dev->lock);
2182
2183         if (unlikely(rc < 0))
2184                 return POLLERR;
2185
2186         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2187             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2188                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2189         else
2190                 return POLLERR;
2191 }
2192
2193 /*
2194  * cx231xx_v4l2_mmap()
2195  */
2196 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2197 {
2198         struct cx231xx_fh *fh = filp->private_data;
2199         struct cx231xx *dev = fh->dev;
2200         int rc;
2201
2202         rc = check_dev(dev);
2203         if (rc < 0)
2204                 return rc;
2205
2206         mutex_lock(&dev->lock);
2207         rc = res_get(fh);
2208         mutex_unlock(&dev->lock);
2209
2210         if (unlikely(rc < 0))
2211                 return rc;
2212
2213         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2214
2215         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2216                          (unsigned long)vma->vm_start,
2217                          (unsigned long)vma->vm_end -
2218                          (unsigned long)vma->vm_start, rc);
2219
2220         return rc;
2221 }
2222
2223 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2224         .owner   = THIS_MODULE,
2225         .open    = cx231xx_v4l2_open,
2226         .release = cx231xx_v4l2_close,
2227         .read    = cx231xx_v4l2_read,
2228         .poll    = cx231xx_v4l2_poll,
2229         .mmap    = cx231xx_v4l2_mmap,
2230         .ioctl   = video_ioctl2,
2231 };
2232
2233 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2234         .vidioc_querycap               = vidioc_querycap,
2235         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2236         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2237         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2238         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2239         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2240         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2241         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2242         .vidioc_g_audio                =  vidioc_g_audio,
2243         .vidioc_s_audio                = vidioc_s_audio,
2244         .vidioc_cropcap                = vidioc_cropcap,
2245         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2246         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2247         .vidioc_reqbufs                = vidioc_reqbufs,
2248         .vidioc_querybuf               = vidioc_querybuf,
2249         .vidioc_qbuf                   = vidioc_qbuf,
2250         .vidioc_dqbuf                  = vidioc_dqbuf,
2251         .vidioc_s_std                  = vidioc_s_std,
2252         .vidioc_g_std                  = vidioc_g_std,
2253         .vidioc_enum_input             = vidioc_enum_input,
2254         .vidioc_g_input                = vidioc_g_input,
2255         .vidioc_s_input                = vidioc_s_input,
2256         .vidioc_queryctrl              = vidioc_queryctrl,
2257         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2258         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2259         .vidioc_streamon               = vidioc_streamon,
2260         .vidioc_streamoff              = vidioc_streamoff,
2261         .vidioc_g_tuner                = vidioc_g_tuner,
2262         .vidioc_s_tuner                = vidioc_s_tuner,
2263         .vidioc_g_frequency            = vidioc_g_frequency,
2264         .vidioc_s_frequency            = vidioc_s_frequency,
2265 #ifdef CONFIG_VIDEO_ADV_DEBUG
2266         .vidioc_g_register             = vidioc_g_register,
2267         .vidioc_s_register             = vidioc_s_register,
2268 #endif
2269 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2270         .vidiocgmbuf                   = vidiocgmbuf,
2271 #endif
2272 };
2273
2274 static struct video_device cx231xx_vbi_template;
2275
2276 static const struct video_device cx231xx_video_template = {
2277         .fops         = &cx231xx_v4l_fops,
2278         .release      = video_device_release,
2279         .ioctl_ops    = &video_ioctl_ops,
2280         .tvnorms      = V4L2_STD_ALL,
2281         .current_norm = V4L2_STD_PAL,
2282 };
2283
2284 static const struct v4l2_file_operations radio_fops = {
2285         .owner   = THIS_MODULE,
2286         .open   = cx231xx_v4l2_open,
2287         .release = cx231xx_v4l2_close,
2288         .ioctl   = video_ioctl2,
2289 };
2290
2291 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2292         .vidioc_querycap    = radio_querycap,
2293         .vidioc_g_tuner     = radio_g_tuner,
2294         .vidioc_enum_input  = radio_enum_input,
2295         .vidioc_g_audio     = radio_g_audio,
2296         .vidioc_s_tuner     = radio_s_tuner,
2297         .vidioc_s_audio     = radio_s_audio,
2298         .vidioc_s_input     = radio_s_input,
2299         .vidioc_queryctrl   = radio_queryctrl,
2300         .vidioc_g_ctrl      = vidioc_g_ctrl,
2301         .vidioc_s_ctrl      = vidioc_s_ctrl,
2302         .vidioc_g_frequency = vidioc_g_frequency,
2303         .vidioc_s_frequency = vidioc_s_frequency,
2304 #ifdef CONFIG_VIDEO_ADV_DEBUG
2305         .vidioc_g_register  = vidioc_g_register,
2306         .vidioc_s_register  = vidioc_s_register,
2307 #endif
2308 };
2309
2310 static struct video_device cx231xx_radio_template = {
2311         .name      = "cx231xx-radio",
2312         .fops      = &radio_fops,
2313         .ioctl_ops = &radio_ioctl_ops,
2314 };
2315
2316 /******************************** usb interface ******************************/
2317
2318 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2319                 const struct video_device
2320                 *template, const char *type_name)
2321 {
2322         struct video_device *vfd;
2323
2324         vfd = video_device_alloc();
2325         if (NULL == vfd)
2326                 return NULL;
2327
2328         *vfd = *template;
2329         vfd->v4l2_dev = &dev->v4l2_dev;
2330         vfd->release = video_device_release;
2331         vfd->debug = video_debug;
2332
2333         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2334
2335         video_set_drvdata(vfd, dev);
2336         return vfd;
2337 }
2338
2339 int cx231xx_register_analog_devices(struct cx231xx *dev)
2340 {
2341         int ret;
2342
2343         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2344                      dev->name,
2345                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2346                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2347                      CX231XX_VERSION_CODE & 0xff);
2348
2349         /* set default norm */
2350         /*dev->norm = cx231xx_video_template.current_norm; */
2351         dev->width = norm_maxw(dev);
2352         dev->height = norm_maxh(dev);
2353         dev->interlaced = 0;
2354         dev->hscale = 0;
2355         dev->vscale = 0;
2356
2357         /* Analog specific initialization */
2358         dev->format = &format[0];
2359         /* video_mux(dev, dev->video_input); */
2360
2361         /* Audio defaults */
2362         dev->mute = 1;
2363         dev->volume = 0x1f;
2364
2365         /* enable vbi capturing */
2366         /* write code here...  */
2367
2368         /* allocate and fill video video_device struct */
2369         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2370         if (!dev->vdev) {
2371                 cx231xx_errdev("cannot allocate video_device.\n");
2372                 return -ENODEV;
2373         }
2374
2375         /* register v4l2 video video_device */
2376         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2377                                     video_nr[dev->devno]);
2378         if (ret) {
2379                 cx231xx_errdev("unable to register video device (error=%i).\n",
2380                                ret);
2381                 return ret;
2382         }
2383
2384         cx231xx_info("%s/0: registered device %s [v4l2]\n",
2385                      dev->name, video_device_node_name(dev->vdev));
2386
2387         /* Initialize VBI template */
2388         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2389                sizeof(cx231xx_vbi_template));
2390         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2391
2392         /* Allocate and fill vbi video_device struct */
2393         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2394
2395         /* register v4l2 vbi video_device */
2396         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2397                                     vbi_nr[dev->devno]);
2398         if (ret < 0) {
2399                 cx231xx_errdev("unable to register vbi device\n");
2400                 return ret;
2401         }
2402
2403         cx231xx_info("%s/0: registered device %s\n",
2404                      dev->name, video_device_node_name(dev->vbi_dev));
2405
2406         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2407                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2408                                                    "radio");
2409                 if (!dev->radio_dev) {
2410                         cx231xx_errdev("cannot allocate video_device.\n");
2411                         return -ENODEV;
2412                 }
2413                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2414                                             radio_nr[dev->devno]);
2415                 if (ret < 0) {
2416                         cx231xx_errdev("can't register radio device\n");
2417                         return ret;
2418                 }
2419                 cx231xx_info("Registered radio device as %s\n",
2420                              video_device_node_name(dev->radio_dev));
2421         }
2422
2423         cx231xx_info("V4L2 device registered as %s and %s\n",
2424                      video_device_node_name(dev->vdev),
2425                      video_device_node_name(dev->vbi_dev));
2426
2427         return 0;
2428 }