5cc4fff04cdbf1b8e37f104251f2c1ca0d87a453
[linux-2.6.git] / drivers / media / video / em28xx / em28xx-video.c
1 /*
2    em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
3                     video capture devices
4
5    Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6                       Markus Rechberger <mrechberger@gmail.com>
7                       Mauro Carvalho Chehab <mchehab@infradead.org>
8                       Sascha Sommer <saschasommer@freenet.de>
9
10         Some parts based on SN9C10x PC Camera Controllers GPL driver made
11                 by Luca Risolia <luca.risolia@studio.unibo.it>
12
13    This program is free software; you can redistribute it and/or modify
14    it under the terms of the GNU General Public License as published by
15    the Free Software Foundation; either version 2 of the License, or
16    (at your option) any later version.
17
18    This program is distributed in the hope that it will be useful,
19    but WITHOUT ANY WARRANTY; without even the implied warranty of
20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21    GNU General Public License for more details.
22
23    You should have received a copy of the GNU General Public License
24    along with this program; if not, write to the Free Software
25    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26  */
27
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/bitmap.h>
33 #include <linux/usb.h>
34 #include <linux/i2c.h>
35 #include <linux/version.h>
36 #include <linux/mm.h>
37 #include <linux/mutex.h>
38
39 #include "em28xx.h"
40 #include <media/v4l2-common.h>
41 #include <media/v4l2-ioctl.h>
42 #include <media/v4l2-chip-ident.h>
43 #include <media/msp3400.h>
44 #include <media/tuner.h>
45
46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
47                       "Markus Rechberger <mrechberger@gmail.com>, " \
48                       "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
49                       "Sascha Sommer <saschasommer@freenet.de>"
50
51 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
52 #define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 2)
53
54 #define em28xx_videodbg(fmt, arg...) do {\
55         if (video_debug) \
56                 printk(KERN_INFO "%s %s :"fmt, \
57                          dev->name, __func__ , ##arg); } while (0)
58
59 static unsigned int isoc_debug;
60 module_param(isoc_debug, int, 0644);
61 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
62
63 #define em28xx_isocdbg(fmt, arg...) \
64 do {\
65         if (isoc_debug) { \
66                 printk(KERN_INFO "%s %s :"fmt, \
67                          dev->name, __func__ , ##arg); \
68         } \
69   } while (0)
70
71 MODULE_AUTHOR(DRIVER_AUTHOR);
72 MODULE_DESCRIPTION(DRIVER_DESC);
73 MODULE_LICENSE("GPL");
74
75 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
76 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
77 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
78
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 MODULE_PARM_DESC(video_nr, "video device numbers");
83 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
84 MODULE_PARM_DESC(radio_nr, "radio device numbers");
85
86 static unsigned int video_debug;
87 module_param(video_debug, int, 0644);
88 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
89
90 /* supported video standards */
91 static struct em28xx_fmt format[] = {
92         {
93                 .name     = "16 bpp YUY2, 4:2:2, packed",
94                 .fourcc   = V4L2_PIX_FMT_YUYV,
95                 .depth    = 16,
96                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
97         }, {
98                 .name     = "16 bpp RGB 565, LE",
99                 .fourcc   = V4L2_PIX_FMT_RGB565,
100                 .depth    = 16,
101                 .reg      = EM28XX_OUTFMT_RGB_16_656,
102         }, {
103                 .name     = "8 bpp Bayer BGBG..GRGR",
104                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
105                 .depth    = 8,
106                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
107         }, {
108                 .name     = "8 bpp Bayer GRGR..BGBG",
109                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
110                 .depth    = 8,
111                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
112         }, {
113                 .name     = "8 bpp Bayer GBGB..RGRG",
114                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
115                 .depth    = 8,
116                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
117         }, {
118                 .name     = "12 bpp YUV411",
119                 .fourcc   = V4L2_PIX_FMT_YUV411P,
120                 .depth    = 12,
121                 .reg      = EM28XX_OUTFMT_YUV411,
122         },
123 };
124
125 /* supported controls */
126 /* Common to all boards */
127 static struct v4l2_queryctrl ac97_qctrl[] = {
128         {
129                 .id = V4L2_CID_AUDIO_VOLUME,
130                 .type = V4L2_CTRL_TYPE_INTEGER,
131                 .name = "Volume",
132                 .minimum = 0x0,
133                 .maximum = 0x1f,
134                 .step = 0x1,
135                 .default_value = 0x1f,
136                 .flags = V4L2_CTRL_FLAG_SLIDER,
137         }, {
138                 .id = V4L2_CID_AUDIO_MUTE,
139                 .type = V4L2_CTRL_TYPE_BOOLEAN,
140                 .name = "Mute",
141                 .minimum = 0,
142                 .maximum = 1,
143                 .step = 1,
144                 .default_value = 1,
145                 .flags = 0,
146         }
147 };
148
149 /* ------------------------------------------------------------------
150         DMA and thread functions
151    ------------------------------------------------------------------*/
152
153 /*
154  * Announces that a buffer were filled and request the next
155  */
156 static inline void buffer_filled(struct em28xx *dev,
157                                   struct em28xx_dmaqueue *dma_q,
158                                   struct em28xx_buffer *buf)
159 {
160         /* Advice that buffer was filled */
161         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
162         buf->vb.state = VIDEOBUF_DONE;
163         buf->vb.field_count++;
164         do_gettimeofday(&buf->vb.ts);
165
166         dev->isoc_ctl.vid_buf = NULL;
167
168         list_del(&buf->vb.queue);
169         wake_up(&buf->vb.done);
170 }
171
172 static inline void vbi_buffer_filled(struct em28xx *dev,
173                                      struct em28xx_dmaqueue *dma_q,
174                                      struct em28xx_buffer *buf)
175 {
176         /* Advice that buffer was filled */
177         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
178
179         buf->vb.state = VIDEOBUF_DONE;
180         buf->vb.field_count++;
181         do_gettimeofday(&buf->vb.ts);
182
183         dev->isoc_ctl.vbi_buf = NULL;
184
185         list_del(&buf->vb.queue);
186         wake_up(&buf->vb.done);
187 }
188
189 /*
190  * Identify the buffer header type and properly handles
191  */
192 static void em28xx_copy_video(struct em28xx *dev,
193                               struct em28xx_dmaqueue  *dma_q,
194                               struct em28xx_buffer *buf,
195                               unsigned char *p,
196                               unsigned char *outp, unsigned long len)
197 {
198         void *fieldstart, *startwrite, *startread;
199         int  linesdone, currlinedone, offset, lencopy, remain;
200         int bytesperline = dev->width << 1;
201
202         if (dma_q->pos + len > buf->vb.size)
203                 len = buf->vb.size - dma_q->pos;
204
205         if (p[0] != 0x88 && p[0] != 0x22) {
206                 em28xx_isocdbg("frame is not complete\n");
207                 len += 4;
208         } else
209                 p += 4;
210
211         startread = p;
212         remain = len;
213
214         if (dev->progressive)
215                 fieldstart = outp;
216         else {
217                 /* Interlaces two half frames */
218                 if (buf->top_field)
219                         fieldstart = outp;
220                 else
221                         fieldstart = outp + bytesperline;
222         }
223
224         linesdone = dma_q->pos / bytesperline;
225         currlinedone = dma_q->pos % bytesperline;
226
227         if (dev->progressive)
228                 offset = linesdone * bytesperline + currlinedone;
229         else
230                 offset = linesdone * bytesperline * 2 + currlinedone;
231
232         startwrite = fieldstart + offset;
233         lencopy = bytesperline - currlinedone;
234         lencopy = lencopy > remain ? remain : lencopy;
235
236         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
237                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
238                                ((char *)startwrite + lencopy) -
239                                ((char *)outp + buf->vb.size));
240                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
241                 lencopy = remain;
242         }
243         if (lencopy <= 0)
244                 return;
245         memcpy(startwrite, startread, lencopy);
246
247         remain -= lencopy;
248
249         while (remain > 0) {
250                 startwrite += lencopy + bytesperline;
251                 startread += lencopy;
252                 if (bytesperline > remain)
253                         lencopy = remain;
254                 else
255                         lencopy = bytesperline;
256
257                 if ((char *)startwrite + lencopy > (char *)outp +
258                     buf->vb.size) {
259                         em28xx_isocdbg("Overflow of %zi bytes past buffer end"
260                                        "(2)\n",
261                                        ((char *)startwrite + lencopy) -
262                                        ((char *)outp + buf->vb.size));
263                         lencopy = remain = (char *)outp + buf->vb.size -
264                                            (char *)startwrite;
265                 }
266                 if (lencopy <= 0)
267                         break;
268
269                 memcpy(startwrite, startread, lencopy);
270
271                 remain -= lencopy;
272         }
273
274         dma_q->pos += len;
275 }
276
277 static void em28xx_copy_vbi(struct em28xx *dev,
278                               struct em28xx_dmaqueue  *dma_q,
279                               struct em28xx_buffer *buf,
280                               unsigned char *p,
281                               unsigned char *outp, unsigned long len)
282 {
283         void *startwrite, *startread;
284         int  offset;
285         int bytesperline = 720;
286
287         if (dev == NULL) {
288                 em28xx_isocdbg("dev is null\n");
289                 return;
290         }
291
292         if (dma_q == NULL) {
293                 em28xx_isocdbg("dma_q is null\n");
294                 return;
295         }
296         if (buf == NULL) {
297                 return;
298         }
299         if (p == NULL) {
300                 em28xx_isocdbg("p is null\n");
301                 return;
302         }
303         if (outp == NULL) {
304                 em28xx_isocdbg("outp is null\n");
305                 return;
306         }
307
308         if (dma_q->pos + len > buf->vb.size)
309                 len = buf->vb.size - dma_q->pos;
310
311         if ((p[0] == 0x33 && p[1] == 0x95) ||
312             (p[0] == 0x88 && p[1] == 0x88)) {
313                 /* Header field, advance past it */
314                 p += 4;
315         } else {
316                 len += 4;
317         }
318
319         startread = p;
320
321         startwrite = outp + dma_q->pos;
322         offset = dma_q->pos;
323
324         /* Make sure the bottom field populates the second half of the frame */
325         if (buf->top_field == 0) {
326                 startwrite += bytesperline * 0x0c;
327                 offset += bytesperline * 0x0c;
328         }
329
330         memcpy(startwrite, startread, len);
331         dma_q->pos += len;
332 }
333
334 static inline void print_err_status(struct em28xx *dev,
335                                      int packet, int status)
336 {
337         char *errmsg = "Unknown";
338
339         switch (status) {
340         case -ENOENT:
341                 errmsg = "unlinked synchronuously";
342                 break;
343         case -ECONNRESET:
344                 errmsg = "unlinked asynchronuously";
345                 break;
346         case -ENOSR:
347                 errmsg = "Buffer error (overrun)";
348                 break;
349         case -EPIPE:
350                 errmsg = "Stalled (device not responding)";
351                 break;
352         case -EOVERFLOW:
353                 errmsg = "Babble (bad cable?)";
354                 break;
355         case -EPROTO:
356                 errmsg = "Bit-stuff error (bad cable?)";
357                 break;
358         case -EILSEQ:
359                 errmsg = "CRC/Timeout (could be anything)";
360                 break;
361         case -ETIME:
362                 errmsg = "Device does not respond";
363                 break;
364         }
365         if (packet < 0) {
366                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
367         } else {
368                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
369                                packet, status, errmsg);
370         }
371 }
372
373 /*
374  * video-buf generic routine to get the next available buffer
375  */
376 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
377                                           struct em28xx_buffer **buf)
378 {
379         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
380         char *outp;
381
382         if (list_empty(&dma_q->active)) {
383                 em28xx_isocdbg("No active queue to serve\n");
384                 dev->isoc_ctl.vid_buf = NULL;
385                 *buf = NULL;
386                 return;
387         }
388
389         /* Get the next buffer */
390         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
391
392         /* Cleans up buffer - Usefull for testing for frame/URB loss */
393         outp = videobuf_to_vmalloc(&(*buf)->vb);
394         memset(outp, 0, (*buf)->vb.size);
395
396         dev->isoc_ctl.vid_buf = *buf;
397
398         return;
399 }
400
401 /*
402  * video-buf generic routine to get the next available VBI buffer
403  */
404 static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q,
405                                     struct em28xx_buffer **buf)
406 {
407         struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq);
408         char *outp;
409
410         if (list_empty(&dma_q->active)) {
411                 em28xx_isocdbg("No active queue to serve\n");
412                 dev->isoc_ctl.vbi_buf = NULL;
413                 *buf = NULL;
414                 return;
415         }
416
417         /* Get the next buffer */
418         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
419         /* Cleans up buffer - Usefull for testing for frame/URB loss */
420         outp = videobuf_to_vmalloc(&(*buf)->vb);
421         memset(outp, 0x00, (*buf)->vb.size);
422
423         dev->isoc_ctl.vbi_buf = *buf;
424
425         return;
426 }
427
428 /*
429  * Controls the isoc copy of each urb packet
430  */
431 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
432 {
433         struct em28xx_buffer    *buf;
434         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
435         unsigned char *outp = NULL;
436         int i, len = 0, rc = 1;
437         unsigned char *p;
438
439         if (!dev)
440                 return 0;
441
442         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
443                 return 0;
444
445         if (urb->status < 0) {
446                 print_err_status(dev, -1, urb->status);
447                 if (urb->status == -ENOENT)
448                         return 0;
449         }
450
451         buf = dev->isoc_ctl.vid_buf;
452         if (buf != NULL)
453                 outp = videobuf_to_vmalloc(&buf->vb);
454
455         for (i = 0; i < urb->number_of_packets; i++) {
456                 int status = urb->iso_frame_desc[i].status;
457
458                 if (status < 0) {
459                         print_err_status(dev, i, status);
460                         if (urb->iso_frame_desc[i].status != -EPROTO)
461                                 continue;
462                 }
463
464                 len = urb->iso_frame_desc[i].actual_length - 4;
465
466                 if (urb->iso_frame_desc[i].actual_length <= 0) {
467                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
468                         continue;
469                 }
470                 if (urb->iso_frame_desc[i].actual_length >
471                                                 dev->max_pkt_size) {
472                         em28xx_isocdbg("packet bigger than packet size");
473                         continue;
474                 }
475
476                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
477
478                 /* FIXME: incomplete buffer checks where removed to make
479                    logic simpler. Impacts of those changes should be evaluated
480                  */
481                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
482                         em28xx_isocdbg("VBI HEADER!!!\n");
483                         /* FIXME: Should add vbi copy */
484                         continue;
485                 }
486                 if (p[0] == 0x22 && p[1] == 0x5a) {
487                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
488                                        len, (p[2] & 1) ? "odd" : "even");
489
490                         if (dev->progressive || !(p[2] & 1)) {
491                                 if (buf != NULL)
492                                         buffer_filled(dev, dma_q, buf);
493                                 get_next_buf(dma_q, &buf);
494                                 if (buf == NULL)
495                                         outp = NULL;
496                                 else
497                                         outp = videobuf_to_vmalloc(&buf->vb);
498                         }
499
500                         if (buf != NULL) {
501                                 if (p[2] & 1)
502                                         buf->top_field = 0;
503                                 else
504                                         buf->top_field = 1;
505                         }
506
507                         dma_q->pos = 0;
508                 }
509                 if (buf != NULL)
510                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
511         }
512         return rc;
513 }
514
515 /* Version of isoc handler that takes into account a mixture of video and
516    VBI data */
517 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
518 {
519         struct em28xx_buffer    *buf, *vbi_buf;
520         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
521         struct em28xx_dmaqueue  *vbi_dma_q = &dev->vbiq;
522         unsigned char *outp = NULL;
523         unsigned char *vbioutp = NULL;
524         int i, len = 0, rc = 1;
525         unsigned char *p;
526         int vbi_size;
527
528         if (!dev)
529                 return 0;
530
531         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
532                 return 0;
533
534         if (urb->status < 0) {
535                 print_err_status(dev, -1, urb->status);
536                 if (urb->status == -ENOENT)
537                         return 0;
538         }
539
540         buf = dev->isoc_ctl.vid_buf;
541         if (buf != NULL)
542                 outp = videobuf_to_vmalloc(&buf->vb);
543
544         vbi_buf = dev->isoc_ctl.vbi_buf;
545         if (vbi_buf != NULL)
546                 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
547
548         for (i = 0; i < urb->number_of_packets; i++) {
549                 int status = urb->iso_frame_desc[i].status;
550
551                 if (status < 0) {
552                         print_err_status(dev, i, status);
553                         if (urb->iso_frame_desc[i].status != -EPROTO)
554                                 continue;
555                 }
556
557                 len = urb->iso_frame_desc[i].actual_length - 4;
558
559                 if (urb->iso_frame_desc[i].actual_length <= 0) {
560                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
561                         continue;
562                 }
563                 if (urb->iso_frame_desc[i].actual_length >
564                                                 dev->max_pkt_size) {
565                         em28xx_isocdbg("packet bigger than packet size");
566                         continue;
567                 }
568
569                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
570
571                 /* capture type 0 = vbi start
572                    capture type 1 = video start
573                    capture type 2 = video in progress */
574                 if (p[0] == 0x33 && p[1] == 0x95) {
575                         dev->capture_type = 0;
576                         dev->vbi_read = 0;
577                         em28xx_isocdbg("VBI START HEADER!!!\n");
578                         dev->cur_field = p[2];
579                 }
580
581                 /* FIXME: get rid of hard-coded value */
582                 vbi_size = 720 * 0x0c;
583
584                 if (dev->capture_type == 0) {
585                         if (dev->vbi_read >= vbi_size) {
586                                 /* We've already read all the VBI data, so
587                                    treat the rest as video */
588                                 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
589                         } else if ((dev->vbi_read + len) < vbi_size) {
590                                 /* This entire frame is VBI data */
591                                 if (dev->vbi_read == 0 &&
592                                     (!(dev->cur_field & 1))) {
593                                         /* Brand new frame */
594                                         if (vbi_buf != NULL)
595                                                 vbi_buffer_filled(dev,
596                                                                   vbi_dma_q,
597                                                                   vbi_buf);
598                                         vbi_get_next_buf(vbi_dma_q, &vbi_buf);
599                                         if (vbi_buf == NULL)
600                                                 vbioutp = NULL;
601                                         else
602                                                 vbioutp = videobuf_to_vmalloc(
603                                                         &vbi_buf->vb);
604                                 }
605
606                                 if (dev->vbi_read == 0) {
607                                         vbi_dma_q->pos = 0;
608                                         if (vbi_buf != NULL) {
609                                                 if (dev->cur_field & 1)
610                                                         vbi_buf->top_field = 0;
611                                                 else
612                                                         vbi_buf->top_field = 1;
613                                         }
614                                 }
615
616                                 dev->vbi_read += len;
617                                 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
618                                                 vbioutp, len);
619                         } else {
620                                 /* Some of this frame is VBI data and some is
621                                    video data */
622                                 int vbi_data_len = vbi_size - dev->vbi_read;
623                                 dev->vbi_read += vbi_data_len;
624                                 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
625                                                 vbioutp, vbi_data_len);
626                                 dev->capture_type = 1;
627                                 p += vbi_data_len;
628                                 len -= vbi_data_len;
629                         }
630                 }
631
632                 if (dev->capture_type == 1) {
633                         dev->capture_type = 2;
634                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
635                                        len, (p[2] & 1) ? "odd" : "even");
636
637                         if (dev->progressive || !(dev->cur_field & 1)) {
638                                 if (buf != NULL)
639                                         buffer_filled(dev, dma_q, buf);
640                                 get_next_buf(dma_q, &buf);
641                                 if (buf == NULL)
642                                         outp = NULL;
643                                 else
644                                         outp = videobuf_to_vmalloc(&buf->vb);
645                         }
646                         if (buf != NULL) {
647                                 if (dev->cur_field & 1)
648                                         buf->top_field = 0;
649                                 else
650                                         buf->top_field = 1;
651                         }
652
653                         dma_q->pos = 0;
654                 }
655                 if (buf != NULL && dev->capture_type == 2)
656                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
657         }
658         return rc;
659 }
660
661
662 /* ------------------------------------------------------------------
663         Videobuf operations
664    ------------------------------------------------------------------*/
665
666 static int
667 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
668 {
669         struct em28xx_fh *fh = vq->priv_data;
670         struct em28xx        *dev = fh->dev;
671         struct v4l2_frequency f;
672
673         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
674                 >> 3;
675
676         if (0 == *count)
677                 *count = EM28XX_DEF_BUF;
678
679         if (*count < EM28XX_MIN_BUF)
680                 *count = EM28XX_MIN_BUF;
681
682         /* Ask tuner to go to analog or radio mode */
683         memset(&f, 0, sizeof(f));
684         f.frequency = dev->ctl_freq;
685         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
686
687         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
688
689         return 0;
690 }
691
692 /* This is called *without* dev->slock held; please keep it that way */
693 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
694 {
695         struct em28xx_fh     *fh  = vq->priv_data;
696         struct em28xx        *dev = fh->dev;
697         unsigned long flags = 0;
698         if (in_interrupt())
699                 BUG();
700
701         /* We used to wait for the buffer to finish here, but this didn't work
702            because, as we were keeping the state as VIDEOBUF_QUEUED,
703            videobuf_queue_cancel marked it as finished for us.
704            (Also, it could wedge forever if the hardware was misconfigured.)
705
706            This should be safe; by the time we get here, the buffer isn't
707            queued anymore. If we ever start marking the buffers as
708            VIDEOBUF_ACTIVE, it won't be, though.
709         */
710         spin_lock_irqsave(&dev->slock, flags);
711         if (dev->isoc_ctl.vid_buf == buf)
712                 dev->isoc_ctl.vid_buf = NULL;
713         spin_unlock_irqrestore(&dev->slock, flags);
714
715         videobuf_vmalloc_free(&buf->vb);
716         buf->vb.state = VIDEOBUF_NEEDS_INIT;
717 }
718
719 static int
720 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
721                                                 enum v4l2_field field)
722 {
723         struct em28xx_fh     *fh  = vq->priv_data;
724         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
725         struct em28xx        *dev = fh->dev;
726         int                  rc = 0, urb_init = 0;
727
728         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
729                         + 7) >> 3;
730
731         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
732                 return -EINVAL;
733
734         buf->vb.width  = dev->width;
735         buf->vb.height = dev->height;
736         buf->vb.field  = field;
737
738         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
739                 rc = videobuf_iolock(vq, &buf->vb, NULL);
740                 if (rc < 0)
741                         goto fail;
742         }
743
744         if (!dev->isoc_ctl.num_bufs)
745                 urb_init = 1;
746
747         if (urb_init) {
748                 if (em28xx_vbi_supported(dev) == 1)
749                         rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
750                                               EM28XX_NUM_BUFS,
751                                               dev->max_pkt_size,
752                                               em28xx_isoc_copy_vbi);
753                 else
754                         rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
755                                               EM28XX_NUM_BUFS,
756                                               dev->max_pkt_size,
757                                               em28xx_isoc_copy);
758                 if (rc < 0)
759                         goto fail;
760         }
761
762         buf->vb.state = VIDEOBUF_PREPARED;
763         return 0;
764
765 fail:
766         free_buffer(vq, buf);
767         return rc;
768 }
769
770 static void
771 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
772 {
773         struct em28xx_buffer    *buf     = container_of(vb,
774                                                         struct em28xx_buffer,
775                                                         vb);
776         struct em28xx_fh        *fh      = vq->priv_data;
777         struct em28xx           *dev     = fh->dev;
778         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
779
780         buf->vb.state = VIDEOBUF_QUEUED;
781         list_add_tail(&buf->vb.queue, &vidq->active);
782
783 }
784
785 static void buffer_release(struct videobuf_queue *vq,
786                                 struct videobuf_buffer *vb)
787 {
788         struct em28xx_buffer   *buf  = container_of(vb,
789                                                     struct em28xx_buffer,
790                                                     vb);
791         struct em28xx_fh       *fh   = vq->priv_data;
792         struct em28xx          *dev  = (struct em28xx *)fh->dev;
793
794         em28xx_isocdbg("em28xx: called buffer_release\n");
795
796         free_buffer(vq, buf);
797 }
798
799 static struct videobuf_queue_ops em28xx_video_qops = {
800         .buf_setup      = buffer_setup,
801         .buf_prepare    = buffer_prepare,
802         .buf_queue      = buffer_queue,
803         .buf_release    = buffer_release,
804 };
805
806 /*********************  v4l2 interface  **************************************/
807
808 static void video_mux(struct em28xx *dev, int index)
809 {
810         dev->ctl_input = index;
811         dev->ctl_ainput = INPUT(index)->amux;
812         dev->ctl_aoutput = INPUT(index)->aout;
813
814         if (!dev->ctl_aoutput)
815                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
816
817         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
818                         INPUT(index)->vmux, 0, 0);
819
820         if (dev->board.has_msp34xx) {
821                 if (dev->i2s_speed) {
822                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
823                                 s_i2s_clock_freq, dev->i2s_speed);
824                 }
825                 /* Note: this is msp3400 specific */
826                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
827                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
828         }
829
830         if (dev->board.adecoder != EM28XX_NOADECODER) {
831                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
832                         dev->ctl_ainput, dev->ctl_aoutput, 0);
833         }
834
835         em28xx_audio_analog_set(dev);
836 }
837
838 /* Usage lock check functions */
839 static int res_get(struct em28xx_fh *fh, unsigned int bit)
840 {
841         struct em28xx    *dev = fh->dev;
842
843         if (fh->resources & bit)
844                 /* have it already allocated */
845                 return 1;
846
847         /* is it free? */
848         mutex_lock(&dev->lock);
849         if (dev->resources & bit) {
850                 /* no, someone else uses it */
851                 mutex_unlock(&dev->lock);
852                 return 0;
853         }
854         /* it's free, grab it */
855         fh->resources  |= bit;
856         dev->resources |= bit;
857         em28xx_videodbg("res: get %d\n", bit);
858         mutex_unlock(&dev->lock);
859         return 1;
860 }
861
862 static int res_check(struct em28xx_fh *fh, unsigned int bit)
863 {
864         return fh->resources & bit;
865 }
866
867 static int res_locked(struct em28xx *dev, unsigned int bit)
868 {
869         return dev->resources & bit;
870 }
871
872 static void res_free(struct em28xx_fh *fh, unsigned int bits)
873 {
874         struct em28xx    *dev = fh->dev;
875
876         BUG_ON((fh->resources & bits) != bits);
877
878         mutex_lock(&dev->lock);
879         fh->resources  &= ~bits;
880         dev->resources &= ~bits;
881         em28xx_videodbg("res: put %d\n", bits);
882         mutex_unlock(&dev->lock);
883 }
884
885 static int get_ressource(struct em28xx_fh *fh)
886 {
887         switch (fh->type) {
888         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
889                 return EM28XX_RESOURCE_VIDEO;
890         case V4L2_BUF_TYPE_VBI_CAPTURE:
891                 return EM28XX_RESOURCE_VBI;
892         default:
893                 BUG();
894                 return 0;
895         }
896 }
897
898 /*
899  * ac97_queryctrl()
900  * return the ac97 supported controls
901  */
902 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
903 {
904         int i;
905
906         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
907                 if (qc->id && qc->id == ac97_qctrl[i].id) {
908                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
909                         return 0;
910                 }
911         }
912
913         /* Control is not ac97 related */
914         return 1;
915 }
916
917 /*
918  * ac97_get_ctrl()
919  * return the current values for ac97 mute and volume
920  */
921 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
922 {
923         switch (ctrl->id) {
924         case V4L2_CID_AUDIO_MUTE:
925                 ctrl->value = dev->mute;
926                 return 0;
927         case V4L2_CID_AUDIO_VOLUME:
928                 ctrl->value = dev->volume;
929                 return 0;
930         default:
931                 /* Control is not ac97 related */
932                 return 1;
933         }
934 }
935
936 /*
937  * ac97_set_ctrl()
938  * set values for ac97 mute and volume
939  */
940 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
941 {
942         int i;
943
944         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
945                 if (ctrl->id == ac97_qctrl[i].id)
946                         goto handle;
947
948         /* Announce that hasn't handle it */
949         return 1;
950
951 handle:
952         if (ctrl->value < ac97_qctrl[i].minimum ||
953             ctrl->value > ac97_qctrl[i].maximum)
954                 return -ERANGE;
955
956         switch (ctrl->id) {
957         case V4L2_CID_AUDIO_MUTE:
958                 dev->mute = ctrl->value;
959                 break;
960         case V4L2_CID_AUDIO_VOLUME:
961                 dev->volume = ctrl->value;
962                 break;
963         }
964
965         return em28xx_audio_analog_set(dev);
966 }
967
968 static int check_dev(struct em28xx *dev)
969 {
970         if (dev->state & DEV_DISCONNECTED) {
971                 em28xx_errdev("v4l2 ioctl: device not present\n");
972                 return -ENODEV;
973         }
974
975         if (dev->state & DEV_MISCONFIGURED) {
976                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
977                               "close and open it again\n");
978                 return -EIO;
979         }
980         return 0;
981 }
982
983 static void get_scale(struct em28xx *dev,
984                         unsigned int width, unsigned int height,
985                         unsigned int *hscale, unsigned int *vscale)
986 {
987         unsigned int          maxw = norm_maxw(dev);
988         unsigned int          maxh = norm_maxh(dev);
989
990         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
991         if (*hscale >= 0x4000)
992                 *hscale = 0x3fff;
993
994         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
995         if (*vscale >= 0x4000)
996                 *vscale = 0x3fff;
997 }
998
999 /* ------------------------------------------------------------------
1000         IOCTL vidioc handling
1001    ------------------------------------------------------------------*/
1002
1003 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1004                                         struct v4l2_format *f)
1005 {
1006         struct em28xx_fh      *fh  = priv;
1007         struct em28xx         *dev = fh->dev;
1008
1009         mutex_lock(&dev->lock);
1010
1011         f->fmt.pix.width = dev->width;
1012         f->fmt.pix.height = dev->height;
1013         f->fmt.pix.pixelformat = dev->format->fourcc;
1014         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1015         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
1016         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1017
1018         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1019         if (dev->progressive)
1020                 f->fmt.pix.field = V4L2_FIELD_NONE;
1021         else
1022                 f->fmt.pix.field = dev->interlaced ?
1023                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1024
1025         mutex_unlock(&dev->lock);
1026         return 0;
1027 }
1028
1029 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1030 {
1031         unsigned int i;
1032
1033         for (i = 0; i < ARRAY_SIZE(format); i++)
1034                 if (format[i].fourcc == fourcc)
1035                         return &format[i];
1036
1037         return NULL;
1038 }
1039
1040 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1041                         struct v4l2_format *f)
1042 {
1043         struct em28xx_fh      *fh    = priv;
1044         struct em28xx         *dev   = fh->dev;
1045         unsigned int          width  = f->fmt.pix.width;
1046         unsigned int          height = f->fmt.pix.height;
1047         unsigned int          maxw   = norm_maxw(dev);
1048         unsigned int          maxh   = norm_maxh(dev);
1049         unsigned int          hscale, vscale;
1050         struct em28xx_fmt     *fmt;
1051
1052         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1053         if (!fmt) {
1054                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1055                                 f->fmt.pix.pixelformat);
1056                 return -EINVAL;
1057         }
1058
1059         if (dev->board.is_em2800) {
1060                 /* the em2800 can only scale down to 50% */
1061                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1062                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1063         } else {
1064                 /* width must even because of the YUYV format
1065                    height must be even because of interlacing */
1066                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1067                                       1, 0);
1068         }
1069
1070         get_scale(dev, width, height, &hscale, &vscale);
1071
1072         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1073         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1074
1075         f->fmt.pix.width = width;
1076         f->fmt.pix.height = height;
1077         f->fmt.pix.pixelformat = fmt->fourcc;
1078         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1079         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1080         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1081         if (dev->progressive)
1082                 f->fmt.pix.field = V4L2_FIELD_NONE;
1083         else
1084                 f->fmt.pix.field = dev->interlaced ?
1085                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1086
1087         return 0;
1088 }
1089
1090 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1091                                    unsigned width, unsigned height)
1092 {
1093         struct em28xx_fmt     *fmt;
1094
1095         fmt = format_by_fourcc(fourcc);
1096         if (!fmt)
1097                 return -EINVAL;
1098
1099         dev->format = fmt;
1100         dev->width  = width;
1101         dev->height = height;
1102
1103         /* set new image size */
1104         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1105
1106         em28xx_set_alternate(dev);
1107         em28xx_resolution_set(dev);
1108
1109         return 0;
1110 }
1111
1112 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1113                         struct v4l2_format *f)
1114 {
1115         struct em28xx_fh      *fh  = priv;
1116         struct em28xx         *dev = fh->dev;
1117         int                   rc;
1118
1119         rc = check_dev(dev);
1120         if (rc < 0)
1121                 return rc;
1122
1123         mutex_lock(&dev->lock);
1124
1125         vidioc_try_fmt_vid_cap(file, priv, f);
1126
1127         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1128                 em28xx_errdev("%s queue busy\n", __func__);
1129                 rc = -EBUSY;
1130                 goto out;
1131         }
1132
1133         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1134                                 f->fmt.pix.width, f->fmt.pix.height);
1135
1136 out:
1137         mutex_unlock(&dev->lock);
1138         return rc;
1139 }
1140
1141 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1142 {
1143         struct em28xx_fh   *fh  = priv;
1144         struct em28xx      *dev = fh->dev;
1145         int                rc;
1146
1147         rc = check_dev(dev);
1148         if (rc < 0)
1149                 return rc;
1150
1151         *norm = dev->norm;
1152
1153         return 0;
1154 }
1155
1156 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1157 {
1158         struct em28xx_fh   *fh  = priv;
1159         struct em28xx      *dev = fh->dev;
1160         struct v4l2_format f;
1161         int                rc;
1162
1163         rc = check_dev(dev);
1164         if (rc < 0)
1165                 return rc;
1166
1167         mutex_lock(&dev->lock);
1168         dev->norm = *norm;
1169
1170         /* Adjusts width/height, if needed */
1171         f.fmt.pix.width = dev->width;
1172         f.fmt.pix.height = dev->height;
1173         vidioc_try_fmt_vid_cap(file, priv, &f);
1174
1175         /* set new image size */
1176         dev->width = f.fmt.pix.width;
1177         dev->height = f.fmt.pix.height;
1178         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1179
1180         em28xx_resolution_set(dev);
1181         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1182
1183         mutex_unlock(&dev->lock);
1184         return 0;
1185 }
1186
1187 static int vidioc_g_parm(struct file *file, void *priv,
1188                          struct v4l2_streamparm *p)
1189 {
1190         struct em28xx_fh   *fh  = priv;
1191         struct em28xx      *dev = fh->dev;
1192         int rc = 0;
1193
1194         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1195                 return -EINVAL;
1196
1197         if (dev->board.is_webcam)
1198                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1199                                                 video, g_parm, p);
1200         else
1201                 v4l2_video_std_frame_period(dev->norm,
1202                                                  &p->parm.capture.timeperframe);
1203
1204         return rc;
1205 }
1206
1207 static int vidioc_s_parm(struct file *file, void *priv,
1208                          struct v4l2_streamparm *p)
1209 {
1210         struct em28xx_fh   *fh  = priv;
1211         struct em28xx      *dev = fh->dev;
1212
1213         if (!dev->board.is_webcam)
1214                 return -EINVAL;
1215
1216         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1217                 return -EINVAL;
1218
1219         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1220 }
1221
1222 static const char *iname[] = {
1223         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1224         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1225         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1226         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1227         [EM28XX_VMUX_SVIDEO]     = "S-Video",
1228         [EM28XX_VMUX_TELEVISION] = "Television",
1229         [EM28XX_VMUX_CABLE]      = "Cable TV",
1230         [EM28XX_VMUX_DVB]        = "DVB",
1231         [EM28XX_VMUX_DEBUG]      = "for debug only",
1232 };
1233
1234 static int vidioc_enum_input(struct file *file, void *priv,
1235                                 struct v4l2_input *i)
1236 {
1237         struct em28xx_fh   *fh  = priv;
1238         struct em28xx      *dev = fh->dev;
1239         unsigned int       n;
1240
1241         n = i->index;
1242         if (n >= MAX_EM28XX_INPUT)
1243                 return -EINVAL;
1244         if (0 == INPUT(n)->type)
1245                 return -EINVAL;
1246
1247         i->index = n;
1248         i->type = V4L2_INPUT_TYPE_CAMERA;
1249
1250         strcpy(i->name, iname[INPUT(n)->type]);
1251
1252         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1253                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1254                 i->type = V4L2_INPUT_TYPE_TUNER;
1255
1256         i->std = dev->vdev->tvnorms;
1257
1258         return 0;
1259 }
1260
1261 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1262 {
1263         struct em28xx_fh   *fh  = priv;
1264         struct em28xx      *dev = fh->dev;
1265
1266         *i = dev->ctl_input;
1267
1268         return 0;
1269 }
1270
1271 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1272 {
1273         struct em28xx_fh   *fh  = priv;
1274         struct em28xx      *dev = fh->dev;
1275         int                rc;
1276
1277         rc = check_dev(dev);
1278         if (rc < 0)
1279                 return rc;
1280
1281         if (i >= MAX_EM28XX_INPUT)
1282                 return -EINVAL;
1283         if (0 == INPUT(i)->type)
1284                 return -EINVAL;
1285
1286         dev->ctl_input = i;
1287
1288         mutex_lock(&dev->lock);
1289         video_mux(dev, dev->ctl_input);
1290         mutex_unlock(&dev->lock);
1291         return 0;
1292 }
1293
1294 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1295 {
1296         struct em28xx_fh   *fh    = priv;
1297         struct em28xx      *dev   = fh->dev;
1298
1299         if (!dev->audio_mode.has_audio)
1300                 return -EINVAL;
1301
1302         switch (a->index) {
1303         case EM28XX_AMUX_VIDEO:
1304                 strcpy(a->name, "Television");
1305                 break;
1306         case EM28XX_AMUX_LINE_IN:
1307                 strcpy(a->name, "Line In");
1308                 break;
1309         case EM28XX_AMUX_VIDEO2:
1310                 strcpy(a->name, "Television alt");
1311                 break;
1312         case EM28XX_AMUX_PHONE:
1313                 strcpy(a->name, "Phone");
1314                 break;
1315         case EM28XX_AMUX_MIC:
1316                 strcpy(a->name, "Mic");
1317                 break;
1318         case EM28XX_AMUX_CD:
1319                 strcpy(a->name, "CD");
1320                 break;
1321         case EM28XX_AMUX_AUX:
1322                 strcpy(a->name, "Aux");
1323                 break;
1324         case EM28XX_AMUX_PCM_OUT:
1325                 strcpy(a->name, "PCM");
1326                 break;
1327         default:
1328                 return -EINVAL;
1329         }
1330
1331         a->index = dev->ctl_ainput;
1332         a->capability = V4L2_AUDCAP_STEREO;
1333
1334         return 0;
1335 }
1336
1337 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1338 {
1339         struct em28xx_fh   *fh  = priv;
1340         struct em28xx      *dev = fh->dev;
1341
1342
1343         if (!dev->audio_mode.has_audio)
1344                 return -EINVAL;
1345
1346         if (a->index >= MAX_EM28XX_INPUT)
1347                 return -EINVAL;
1348         if (0 == INPUT(a->index)->type)
1349                 return -EINVAL;
1350
1351         mutex_lock(&dev->lock);
1352
1353         dev->ctl_ainput = INPUT(a->index)->amux;
1354         dev->ctl_aoutput = INPUT(a->index)->aout;
1355
1356         if (!dev->ctl_aoutput)
1357                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1358
1359         mutex_unlock(&dev->lock);
1360         return 0;
1361 }
1362
1363 static int vidioc_queryctrl(struct file *file, void *priv,
1364                                 struct v4l2_queryctrl *qc)
1365 {
1366         struct em28xx_fh      *fh  = priv;
1367         struct em28xx         *dev = fh->dev;
1368         int                   id  = qc->id;
1369         int                   rc;
1370
1371         rc = check_dev(dev);
1372         if (rc < 0)
1373                 return rc;
1374
1375         memset(qc, 0, sizeof(*qc));
1376
1377         qc->id = id;
1378
1379         /* enumberate AC97 controls */
1380         if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1381                 rc = ac97_queryctrl(qc);
1382                 if (!rc)
1383                         return 0;
1384         }
1385
1386         /* enumberate V4L2 device controls */
1387         mutex_lock(&dev->lock);
1388         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1389         mutex_unlock(&dev->lock);
1390
1391         if (qc->type)
1392                 return 0;
1393         else
1394                 return -EINVAL;
1395 }
1396
1397 static int vidioc_g_ctrl(struct file *file, void *priv,
1398                                 struct v4l2_control *ctrl)
1399 {
1400         struct em28xx_fh      *fh  = priv;
1401         struct em28xx         *dev = fh->dev;
1402         int                   rc;
1403
1404         rc = check_dev(dev);
1405         if (rc < 0)
1406                 return rc;
1407         rc = 0;
1408
1409         mutex_lock(&dev->lock);
1410
1411         /* Set an AC97 control */
1412         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1413                 rc = ac97_get_ctrl(dev, ctrl);
1414         else
1415                 rc = 1;
1416
1417         /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1418         if (rc == 1) {
1419                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1420                 rc = 0;
1421         }
1422
1423         mutex_unlock(&dev->lock);
1424         return rc;
1425 }
1426
1427 static int vidioc_s_ctrl(struct file *file, void *priv,
1428                                 struct v4l2_control *ctrl)
1429 {
1430         struct em28xx_fh      *fh  = priv;
1431         struct em28xx         *dev = fh->dev;
1432         int                   rc;
1433
1434         rc = check_dev(dev);
1435         if (rc < 0)
1436                 return rc;
1437
1438         mutex_lock(&dev->lock);
1439
1440         /* Set an AC97 control */
1441         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1442                 rc = ac97_set_ctrl(dev, ctrl);
1443         else
1444                 rc = 1;
1445
1446         /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1447         if (rc == 1) {
1448                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1449
1450                 /*
1451                  * In the case of non-AC97 volume controls, we still need
1452                  * to do some setups at em28xx, in order to mute/unmute
1453                  * and to adjust audio volume. However, the value ranges
1454                  * should be checked by the corresponding V4L subdriver.
1455                  */
1456                 switch (ctrl->id) {
1457                 case V4L2_CID_AUDIO_MUTE:
1458                         dev->mute = ctrl->value;
1459                         rc = em28xx_audio_analog_set(dev);
1460                         break;
1461                 case V4L2_CID_AUDIO_VOLUME:
1462                         dev->volume = ctrl->value;
1463                         rc = em28xx_audio_analog_set(dev);
1464                 }
1465         }
1466
1467         mutex_unlock(&dev->lock);
1468         return rc;
1469 }
1470
1471 static int vidioc_g_tuner(struct file *file, void *priv,
1472                                 struct v4l2_tuner *t)
1473 {
1474         struct em28xx_fh      *fh  = priv;
1475         struct em28xx         *dev = fh->dev;
1476         int                   rc;
1477
1478         rc = check_dev(dev);
1479         if (rc < 0)
1480                 return rc;
1481
1482         if (0 != t->index)
1483                 return -EINVAL;
1484
1485         strcpy(t->name, "Tuner");
1486
1487         mutex_lock(&dev->lock);
1488         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1489         mutex_unlock(&dev->lock);
1490
1491         return 0;
1492 }
1493
1494 static int vidioc_s_tuner(struct file *file, void *priv,
1495                                 struct v4l2_tuner *t)
1496 {
1497         struct em28xx_fh      *fh  = priv;
1498         struct em28xx         *dev = fh->dev;
1499         int                   rc;
1500
1501         rc = check_dev(dev);
1502         if (rc < 0)
1503                 return rc;
1504
1505         if (0 != t->index)
1506                 return -EINVAL;
1507
1508         mutex_lock(&dev->lock);
1509         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1510         mutex_unlock(&dev->lock);
1511
1512         return 0;
1513 }
1514
1515 static int vidioc_g_frequency(struct file *file, void *priv,
1516                                 struct v4l2_frequency *f)
1517 {
1518         struct em28xx_fh      *fh  = priv;
1519         struct em28xx         *dev = fh->dev;
1520
1521         mutex_lock(&dev->lock);
1522         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1523         f->frequency = dev->ctl_freq;
1524         mutex_unlock(&dev->lock);
1525
1526         return 0;
1527 }
1528
1529 static int vidioc_s_frequency(struct file *file, void *priv,
1530                                 struct v4l2_frequency *f)
1531 {
1532         struct em28xx_fh      *fh  = priv;
1533         struct em28xx         *dev = fh->dev;
1534         int                   rc;
1535
1536         rc = check_dev(dev);
1537         if (rc < 0)
1538                 return rc;
1539
1540         if (0 != f->tuner)
1541                 return -EINVAL;
1542
1543         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1544                 return -EINVAL;
1545         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1546                 return -EINVAL;
1547
1548         mutex_lock(&dev->lock);
1549
1550         dev->ctl_freq = f->frequency;
1551         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1552
1553         mutex_unlock(&dev->lock);
1554
1555         return 0;
1556 }
1557
1558 #ifdef CONFIG_VIDEO_ADV_DEBUG
1559 static int em28xx_reg_len(int reg)
1560 {
1561         switch (reg) {
1562         case EM28XX_R40_AC97LSB:
1563         case EM28XX_R30_HSCALELOW:
1564         case EM28XX_R32_VSCALELOW:
1565                 return 2;
1566         default:
1567                 return 1;
1568         }
1569 }
1570
1571 static int vidioc_g_chip_ident(struct file *file, void *priv,
1572                struct v4l2_dbg_chip_ident *chip)
1573 {
1574         struct em28xx_fh      *fh  = priv;
1575         struct em28xx         *dev = fh->dev;
1576
1577         chip->ident = V4L2_IDENT_NONE;
1578         chip->revision = 0;
1579
1580         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1581
1582         return 0;
1583 }
1584
1585
1586 static int vidioc_g_register(struct file *file, void *priv,
1587                              struct v4l2_dbg_register *reg)
1588 {
1589         struct em28xx_fh      *fh  = priv;
1590         struct em28xx         *dev = fh->dev;
1591         int ret;
1592
1593         switch (reg->match.type) {
1594         case V4L2_CHIP_MATCH_AC97:
1595                 mutex_lock(&dev->lock);
1596                 ret = em28xx_read_ac97(dev, reg->reg);
1597                 mutex_unlock(&dev->lock);
1598                 if (ret < 0)
1599                         return ret;
1600
1601                 reg->val = ret;
1602                 reg->size = 1;
1603                 return 0;
1604         case V4L2_CHIP_MATCH_I2C_DRIVER:
1605                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1606                 return 0;
1607         case V4L2_CHIP_MATCH_I2C_ADDR:
1608                 /* TODO: is this correct? */
1609                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1610                 return 0;
1611         default:
1612                 if (!v4l2_chip_match_host(&reg->match))
1613                         return -EINVAL;
1614         }
1615
1616         /* Match host */
1617         reg->size = em28xx_reg_len(reg->reg);
1618         if (reg->size == 1) {
1619                 mutex_lock(&dev->lock);
1620                 ret = em28xx_read_reg(dev, reg->reg);
1621                 mutex_unlock(&dev->lock);
1622
1623                 if (ret < 0)
1624                         return ret;
1625
1626                 reg->val = ret;
1627         } else {
1628                 __le16 val = 0;
1629                 mutex_lock(&dev->lock);
1630                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1631                                                    reg->reg, (char *)&val, 2);
1632                 mutex_unlock(&dev->lock);
1633                 if (ret < 0)
1634                         return ret;
1635
1636                 reg->val = le16_to_cpu(val);
1637         }
1638
1639         return 0;
1640 }
1641
1642 static int vidioc_s_register(struct file *file, void *priv,
1643                              struct v4l2_dbg_register *reg)
1644 {
1645         struct em28xx_fh      *fh  = priv;
1646         struct em28xx         *dev = fh->dev;
1647         __le16 buf;
1648         int    rc;
1649
1650         switch (reg->match.type) {
1651         case V4L2_CHIP_MATCH_AC97:
1652                 mutex_lock(&dev->lock);
1653                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1654                 mutex_unlock(&dev->lock);
1655
1656                 return rc;
1657         case V4L2_CHIP_MATCH_I2C_DRIVER:
1658                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1659                 return 0;
1660         case V4L2_CHIP_MATCH_I2C_ADDR:
1661                 /* TODO: is this correct? */
1662                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1663                 return 0;
1664         default:
1665                 if (!v4l2_chip_match_host(&reg->match))
1666                         return -EINVAL;
1667         }
1668
1669         /* Match host */
1670         buf = cpu_to_le16(reg->val);
1671
1672         mutex_lock(&dev->lock);
1673         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1674                                em28xx_reg_len(reg->reg));
1675         mutex_unlock(&dev->lock);
1676
1677         return rc;
1678 }
1679 #endif
1680
1681
1682 static int vidioc_cropcap(struct file *file, void *priv,
1683                                         struct v4l2_cropcap *cc)
1684 {
1685         struct em28xx_fh      *fh  = priv;
1686         struct em28xx         *dev = fh->dev;
1687
1688         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1689                 return -EINVAL;
1690
1691         cc->bounds.left = 0;
1692         cc->bounds.top = 0;
1693         cc->bounds.width = dev->width;
1694         cc->bounds.height = dev->height;
1695         cc->defrect = cc->bounds;
1696         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1697         cc->pixelaspect.denominator = 59;
1698
1699         return 0;
1700 }
1701
1702 static int vidioc_streamon(struct file *file, void *priv,
1703                                         enum v4l2_buf_type type)
1704 {
1705         struct em28xx_fh      *fh  = priv;
1706         struct em28xx         *dev = fh->dev;
1707         int                   rc = -EINVAL;
1708
1709         rc = check_dev(dev);
1710         if (rc < 0)
1711                 return rc;
1712
1713         if (unlikely(type != fh->type))
1714                 return -EINVAL;
1715
1716         em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1717                         fh, type, fh->resources, dev->resources);
1718
1719         if (unlikely(!res_get(fh, get_ressource(fh))))
1720                 return -EBUSY;
1721
1722         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1723                 rc = videobuf_streamon(&fh->vb_vidq);
1724         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1725                 rc = videobuf_streamon(&fh->vb_vbiq);
1726
1727         return rc;
1728 }
1729
1730 static int vidioc_streamoff(struct file *file, void *priv,
1731                                         enum v4l2_buf_type type)
1732 {
1733         struct em28xx_fh      *fh  = priv;
1734         struct em28xx         *dev = fh->dev;
1735         int                   rc;
1736
1737         rc = check_dev(dev);
1738         if (rc < 0)
1739                 return rc;
1740
1741         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1742             fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1743                 return -EINVAL;
1744         if (type != fh->type)
1745                 return -EINVAL;
1746
1747         em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1748                         fh, type, fh->resources, dev->resources);
1749
1750         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1751                 videobuf_streamoff(&fh->vb_vidq);
1752                 res_free(fh, EM28XX_RESOURCE_VIDEO);
1753         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1754                 videobuf_streamoff(&fh->vb_vbiq);
1755                 res_free(fh, EM28XX_RESOURCE_VBI);
1756         }
1757
1758         return 0;
1759 }
1760
1761 static int vidioc_querycap(struct file *file, void  *priv,
1762                                         struct v4l2_capability *cap)
1763 {
1764         struct em28xx_fh      *fh  = priv;
1765         struct em28xx         *dev = fh->dev;
1766
1767         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1768         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1769         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1770
1771         cap->version = EM28XX_VERSION_CODE;
1772
1773         cap->capabilities =
1774                         V4L2_CAP_SLICED_VBI_CAPTURE |
1775                         V4L2_CAP_VIDEO_CAPTURE |
1776                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1777
1778         if (dev->vbi_dev)
1779                 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1780
1781         if (dev->audio_mode.has_audio)
1782                 cap->capabilities |= V4L2_CAP_AUDIO;
1783
1784         if (dev->tuner_type != TUNER_ABSENT)
1785                 cap->capabilities |= V4L2_CAP_TUNER;
1786
1787         return 0;
1788 }
1789
1790 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1791                                         struct v4l2_fmtdesc *f)
1792 {
1793         if (unlikely(f->index >= ARRAY_SIZE(format)))
1794                 return -EINVAL;
1795
1796         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1797         f->pixelformat = format[f->index].fourcc;
1798
1799         return 0;
1800 }
1801
1802 /* Sliced VBI ioctls */
1803 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1804                                         struct v4l2_format *f)
1805 {
1806         struct em28xx_fh      *fh  = priv;
1807         struct em28xx         *dev = fh->dev;
1808         int                   rc;
1809
1810         rc = check_dev(dev);
1811         if (rc < 0)
1812                 return rc;
1813
1814         mutex_lock(&dev->lock);
1815
1816         f->fmt.sliced.service_set = 0;
1817         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1818
1819         if (f->fmt.sliced.service_set == 0)
1820                 rc = -EINVAL;
1821
1822         mutex_unlock(&dev->lock);
1823
1824         return rc;
1825 }
1826
1827 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1828                         struct v4l2_format *f)
1829 {
1830         struct em28xx_fh      *fh  = priv;
1831         struct em28xx         *dev = fh->dev;
1832         int                   rc;
1833
1834         rc = check_dev(dev);
1835         if (rc < 0)
1836                 return rc;
1837
1838         mutex_lock(&dev->lock);
1839         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1840         mutex_unlock(&dev->lock);
1841
1842         if (f->fmt.sliced.service_set == 0)
1843                 return -EINVAL;
1844
1845         return 0;
1846 }
1847
1848 /* RAW VBI ioctls */
1849
1850 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1851                                 struct v4l2_format *format)
1852 {
1853         format->fmt.vbi.samples_per_line = 720;
1854         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1855         format->fmt.vbi.offset = 0;
1856         format->fmt.vbi.flags = 0;
1857
1858         /* Varies by video standard (NTSC, PAL, etc.) */
1859         /* FIXME: hard-coded for NTSC support */
1860         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; /* FIXME: ??? */
1861         format->fmt.vbi.count[0] = 12;
1862         format->fmt.vbi.count[1] = 12;
1863         format->fmt.vbi.start[0] = 10;
1864         format->fmt.vbi.start[1] = 273;
1865
1866         return 0;
1867 }
1868
1869 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1870                                 struct v4l2_format *format)
1871 {
1872         format->fmt.vbi.samples_per_line = 720;
1873         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1874         format->fmt.vbi.offset = 0;
1875         format->fmt.vbi.flags = 0;
1876
1877         /* Varies by video standard (NTSC, PAL, etc.) */
1878         /* FIXME: hard-coded for NTSC support */
1879         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; /* FIXME: ??? */
1880         format->fmt.vbi.count[0] = 12;
1881         format->fmt.vbi.count[1] = 12;
1882         format->fmt.vbi.start[0] = 10;
1883         format->fmt.vbi.start[1] = 273;
1884
1885         return 0;
1886 }
1887
1888 static int vidioc_reqbufs(struct file *file, void *priv,
1889                           struct v4l2_requestbuffers *rb)
1890 {
1891         struct em28xx_fh      *fh  = priv;
1892         struct em28xx         *dev = fh->dev;
1893         int                   rc;
1894
1895         rc = check_dev(dev);
1896         if (rc < 0)
1897                 return rc;
1898
1899         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1900                 return videobuf_reqbufs(&fh->vb_vidq, rb);
1901         else
1902                 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1903 }
1904
1905 static int vidioc_querybuf(struct file *file, void *priv,
1906                            struct v4l2_buffer *b)
1907 {
1908         struct em28xx_fh      *fh  = priv;
1909         struct em28xx         *dev = fh->dev;
1910         int                   rc;
1911
1912         rc = check_dev(dev);
1913         if (rc < 0)
1914                 return rc;
1915
1916         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1917                 return videobuf_querybuf(&fh->vb_vidq, b);
1918         else {
1919                 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1920                    the videobuf framework, but we probably shouldn't be
1921                    returning a buffer larger than that which was asked for.
1922                    At a minimum, it causes a crash in zvbi since it does
1923                    a memcpy based on the source buffer length */
1924                 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1925                 b->length = 17280;
1926                 return result;
1927         }
1928 }
1929
1930 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1931 {
1932         struct em28xx_fh      *fh  = priv;
1933         struct em28xx         *dev = fh->dev;
1934         int                   rc;
1935
1936         rc = check_dev(dev);
1937         if (rc < 0)
1938                 return rc;
1939
1940         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1941                 return videobuf_qbuf(&fh->vb_vidq, b);
1942         else
1943                 return videobuf_qbuf(&fh->vb_vbiq, b);
1944 }
1945
1946 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1947 {
1948         struct em28xx_fh      *fh  = priv;
1949         struct em28xx         *dev = fh->dev;
1950         int                   rc;
1951
1952         rc = check_dev(dev);
1953         if (rc < 0)
1954                 return rc;
1955
1956         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1957                 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1958                                       O_NONBLOCK);
1959         else
1960                 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1961                                       O_NONBLOCK);
1962 }
1963
1964 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1965 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1966 {
1967         struct em28xx_fh  *fh = priv;
1968
1969         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1970                 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1971         else
1972                 return videobuf_cgmbuf(&fh->vb_vbiq, mbuf, 8);
1973 }
1974 #endif
1975
1976
1977 /* ----------------------------------------------------------- */
1978 /* RADIO ESPECIFIC IOCTLS                                      */
1979 /* ----------------------------------------------------------- */
1980
1981 static int radio_querycap(struct file *file, void  *priv,
1982                           struct v4l2_capability *cap)
1983 {
1984         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1985
1986         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1987         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1988         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1989
1990         cap->version = EM28XX_VERSION_CODE;
1991         cap->capabilities = V4L2_CAP_TUNER;
1992         return 0;
1993 }
1994
1995 static int radio_g_tuner(struct file *file, void *priv,
1996                          struct v4l2_tuner *t)
1997 {
1998         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1999
2000         if (unlikely(t->index > 0))
2001                 return -EINVAL;
2002
2003         strcpy(t->name, "Radio");
2004         t->type = V4L2_TUNER_RADIO;
2005
2006         mutex_lock(&dev->lock);
2007         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
2008         mutex_unlock(&dev->lock);
2009
2010         return 0;
2011 }
2012
2013 static int radio_enum_input(struct file *file, void *priv,
2014                             struct v4l2_input *i)
2015 {
2016         if (i->index != 0)
2017                 return -EINVAL;
2018         strcpy(i->name, "Radio");
2019         i->type = V4L2_INPUT_TYPE_TUNER;
2020
2021         return 0;
2022 }
2023
2024 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2025 {
2026         if (unlikely(a->index))
2027                 return -EINVAL;
2028
2029         strcpy(a->name, "Radio");
2030         return 0;
2031 }
2032
2033 static int radio_s_tuner(struct file *file, void *priv,
2034                          struct v4l2_tuner *t)
2035 {
2036         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2037
2038         if (0 != t->index)
2039                 return -EINVAL;
2040
2041         mutex_lock(&dev->lock);
2042         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2043         mutex_unlock(&dev->lock);
2044
2045         return 0;
2046 }
2047
2048 static int radio_s_audio(struct file *file, void *fh,
2049                          struct v4l2_audio *a)
2050 {
2051         return 0;
2052 }
2053
2054 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2055 {
2056         return 0;
2057 }
2058
2059 static int radio_queryctrl(struct file *file, void *priv,
2060                            struct v4l2_queryctrl *qc)
2061 {
2062         int i;
2063
2064         if (qc->id <  V4L2_CID_BASE ||
2065                 qc->id >= V4L2_CID_LASTP1)
2066                 return -EINVAL;
2067
2068         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2069                 if (qc->id && qc->id == ac97_qctrl[i].id) {
2070                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2071                         return 0;
2072                 }
2073         }
2074
2075         return -EINVAL;
2076 }
2077
2078 /*
2079  * em28xx_v4l2_open()
2080  * inits the device and starts isoc transfer
2081  */
2082 static int em28xx_v4l2_open(struct file *filp)
2083 {
2084         int minor = video_devdata(filp)->minor;
2085         int errCode = 0, radio;
2086         struct em28xx *dev;
2087         enum v4l2_buf_type fh_type;
2088         struct em28xx_fh *fh;
2089         enum v4l2_field field;
2090
2091         dev = em28xx_get_device(minor, &fh_type, &radio);
2092
2093         if (NULL == dev)
2094                 return -ENODEV;
2095
2096         mutex_lock(&dev->lock);
2097
2098         em28xx_videodbg("open minor=%d type=%s users=%d\n",
2099                                 minor, v4l2_type_names[fh_type], dev->users);
2100
2101
2102         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2103         if (!fh) {
2104                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2105                 mutex_unlock(&dev->lock);
2106                 return -ENOMEM;
2107         }
2108         fh->dev = dev;
2109         fh->radio = radio;
2110         fh->type = fh_type;
2111         filp->private_data = fh;
2112
2113         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2114                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2115                 em28xx_set_alternate(dev);
2116                 em28xx_resolution_set(dev);
2117
2118                 /* Needed, since GPIO might have disabled power of
2119                    some i2c device
2120                  */
2121                 em28xx_wake_i2c(dev);
2122
2123         }
2124         if (fh->radio) {
2125                 em28xx_videodbg("video_open: setting radio device\n");
2126                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2127         }
2128
2129         dev->users++;
2130
2131         if (dev->progressive)
2132                 field = V4L2_FIELD_NONE;
2133         else
2134                 field = V4L2_FIELD_INTERLACED;
2135
2136         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2137                                     NULL, &dev->slock,
2138                                     V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2139                                     sizeof(struct em28xx_buffer), fh);
2140
2141         videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2142                                     NULL, &dev->slock,
2143                                     V4L2_BUF_TYPE_VBI_CAPTURE,
2144                                     V4L2_FIELD_SEQ_TB,
2145                                     sizeof(struct em28xx_buffer), fh);
2146
2147         mutex_unlock(&dev->lock);
2148
2149         return errCode;
2150 }
2151
2152 /*
2153  * em28xx_realease_resources()
2154  * unregisters the v4l2,i2c and usb devices
2155  * called when the device gets disconected or at module unload
2156 */
2157 void em28xx_release_analog_resources(struct em28xx *dev)
2158 {
2159
2160         /*FIXME: I2C IR should be disconnected */
2161
2162         if (dev->radio_dev) {
2163                 if (-1 != dev->radio_dev->minor)
2164                         video_unregister_device(dev->radio_dev);
2165                 else
2166                         video_device_release(dev->radio_dev);
2167                 dev->radio_dev = NULL;
2168         }
2169         if (dev->vbi_dev) {
2170                 em28xx_info("V4L2 device %s deregistered\n",
2171                             video_device_node_name(dev->vbi_dev));
2172                 if (-1 != dev->vbi_dev->minor)
2173                         video_unregister_device(dev->vbi_dev);
2174                 else
2175                         video_device_release(dev->vbi_dev);
2176                 dev->vbi_dev = NULL;
2177         }
2178         if (dev->vdev) {
2179                 em28xx_info("V4L2 device %s deregistered\n",
2180                             video_device_node_name(dev->vdev));
2181                 if (-1 != dev->vdev->minor)
2182                         video_unregister_device(dev->vdev);
2183                 else
2184                         video_device_release(dev->vdev);
2185                 dev->vdev = NULL;
2186         }
2187 }
2188
2189 /*
2190  * em28xx_v4l2_close()
2191  * stops streaming and deallocates all resources allocated by the v4l2
2192  * calls and ioctls
2193  */
2194 static int em28xx_v4l2_close(struct file *filp)
2195 {
2196         struct em28xx_fh *fh  = filp->private_data;
2197         struct em28xx    *dev = fh->dev;
2198         int              errCode;
2199
2200         em28xx_videodbg("users=%d\n", dev->users);
2201
2202         if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2203                 videobuf_stop(&fh->vb_vidq);
2204                 res_free(fh, EM28XX_RESOURCE_VIDEO);
2205         }
2206
2207         if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2208                 videobuf_stop(&fh->vb_vbiq);
2209                 res_free(fh, EM28XX_RESOURCE_VBI);
2210         }
2211
2212         if (dev->users == 1) {
2213                 /* the device is already disconnect,
2214                    free the remaining resources */
2215                 if (dev->state & DEV_DISCONNECTED) {
2216                         em28xx_release_resources(dev);
2217                         kfree(dev);
2218                         return 0;
2219                 }
2220
2221                 /* Save some power by putting tuner to sleep */
2222                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2223
2224                 /* do this before setting alternate! */
2225                 em28xx_uninit_isoc(dev);
2226                 em28xx_set_mode(dev, EM28XX_SUSPEND);
2227
2228                 /* set alternate 0 */
2229                 dev->alt = 0;
2230                 em28xx_videodbg("setting alternate 0\n");
2231                 errCode = usb_set_interface(dev->udev, 0, 0);
2232                 if (errCode < 0) {
2233                         em28xx_errdev("cannot change alternate number to "
2234                                         "0 (error=%i)\n", errCode);
2235                 }
2236         }
2237
2238         videobuf_mmap_free(&fh->vb_vidq);
2239         videobuf_mmap_free(&fh->vb_vbiq);
2240         kfree(fh);
2241         dev->users--;
2242         wake_up_interruptible_nr(&dev->open, 1);
2243         return 0;
2244 }
2245
2246 /*
2247  * em28xx_v4l2_read()
2248  * will allocate buffers when called for the first time
2249  */
2250 static ssize_t
2251 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2252                  loff_t *pos)
2253 {
2254         struct em28xx_fh *fh = filp->private_data;
2255         struct em28xx *dev = fh->dev;
2256         int rc;
2257
2258         rc = check_dev(dev);
2259         if (rc < 0)
2260                 return rc;
2261
2262         /* FIXME: read() is not prepared to allow changing the video
2263            resolution while streaming. Seems a bug at em28xx_set_fmt
2264          */
2265
2266         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2267                 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2268                         return -EBUSY;
2269
2270                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2271                                         filp->f_flags & O_NONBLOCK);
2272         }
2273
2274
2275         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2276                 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2277                         return -EBUSY;
2278
2279                 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2280                                         filp->f_flags & O_NONBLOCK);
2281         }
2282
2283         return 0;
2284 }
2285
2286 /*
2287  * em28xx_v4l2_poll()
2288  * will allocate buffers when called for the first time
2289  */
2290 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2291 {
2292         struct em28xx_fh *fh = filp->private_data;
2293         struct em28xx *dev = fh->dev;
2294         int rc;
2295
2296         rc = check_dev(dev);
2297         if (rc < 0)
2298                 return rc;
2299
2300         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2301                 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2302                         return POLLERR;
2303                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2304         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2305                 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2306                         return POLLERR;
2307                 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2308         } else {
2309                 return POLLERR;
2310         }
2311 }
2312
2313 /*
2314  * em28xx_v4l2_mmap()
2315  */
2316 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2317 {
2318         struct em28xx_fh *fh    = filp->private_data;
2319         struct em28xx    *dev   = fh->dev;
2320         int              rc;
2321
2322         rc = check_dev(dev);
2323         if (rc < 0)
2324                 return rc;
2325
2326         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2327                 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2328         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2329                 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2330
2331         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2332                 (unsigned long)vma->vm_start,
2333                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2334                 rc);
2335
2336         return rc;
2337 }
2338
2339 static const struct v4l2_file_operations em28xx_v4l_fops = {
2340         .owner         = THIS_MODULE,
2341         .open          = em28xx_v4l2_open,
2342         .release       = em28xx_v4l2_close,
2343         .read          = em28xx_v4l2_read,
2344         .poll          = em28xx_v4l2_poll,
2345         .mmap          = em28xx_v4l2_mmap,
2346         .ioctl         = video_ioctl2,
2347 };
2348
2349 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2350         .vidioc_querycap            = vidioc_querycap,
2351         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
2352         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
2353         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
2354         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
2355         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
2356         .vidioc_s_fmt_vbi_cap       = vidioc_s_fmt_vbi_cap,
2357         .vidioc_g_audio             = vidioc_g_audio,
2358         .vidioc_s_audio             = vidioc_s_audio,
2359         .vidioc_cropcap             = vidioc_cropcap,
2360
2361         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2362         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2363         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
2364
2365         .vidioc_reqbufs             = vidioc_reqbufs,
2366         .vidioc_querybuf            = vidioc_querybuf,
2367         .vidioc_qbuf                = vidioc_qbuf,
2368         .vidioc_dqbuf               = vidioc_dqbuf,
2369         .vidioc_g_std               = vidioc_g_std,
2370         .vidioc_s_std               = vidioc_s_std,
2371         .vidioc_g_parm              = vidioc_g_parm,
2372         .vidioc_s_parm              = vidioc_s_parm,
2373         .vidioc_enum_input          = vidioc_enum_input,
2374         .vidioc_g_input             = vidioc_g_input,
2375         .vidioc_s_input             = vidioc_s_input,
2376         .vidioc_queryctrl           = vidioc_queryctrl,
2377         .vidioc_g_ctrl              = vidioc_g_ctrl,
2378         .vidioc_s_ctrl              = vidioc_s_ctrl,
2379         .vidioc_streamon            = vidioc_streamon,
2380         .vidioc_streamoff           = vidioc_streamoff,
2381         .vidioc_g_tuner             = vidioc_g_tuner,
2382         .vidioc_s_tuner             = vidioc_s_tuner,
2383         .vidioc_g_frequency         = vidioc_g_frequency,
2384         .vidioc_s_frequency         = vidioc_s_frequency,
2385 #ifdef CONFIG_VIDEO_ADV_DEBUG
2386         .vidioc_g_register          = vidioc_g_register,
2387         .vidioc_s_register          = vidioc_s_register,
2388         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
2389 #endif
2390 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2391         .vidiocgmbuf                = vidiocgmbuf,
2392 #endif
2393 };
2394
2395 static const struct video_device em28xx_video_template = {
2396         .fops                       = &em28xx_v4l_fops,
2397         .release                    = video_device_release,
2398         .ioctl_ops                  = &video_ioctl_ops,
2399
2400         .minor                      = -1,
2401
2402         .tvnorms                    = V4L2_STD_ALL,
2403         .current_norm               = V4L2_STD_PAL,
2404 };
2405
2406 static const struct v4l2_file_operations radio_fops = {
2407         .owner         = THIS_MODULE,
2408         .open          = em28xx_v4l2_open,
2409         .release       = em28xx_v4l2_close,
2410         .ioctl         = video_ioctl2,
2411 };
2412
2413 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2414         .vidioc_querycap      = radio_querycap,
2415         .vidioc_g_tuner       = radio_g_tuner,
2416         .vidioc_enum_input    = radio_enum_input,
2417         .vidioc_g_audio       = radio_g_audio,
2418         .vidioc_s_tuner       = radio_s_tuner,
2419         .vidioc_s_audio       = radio_s_audio,
2420         .vidioc_s_input       = radio_s_input,
2421         .vidioc_queryctrl     = radio_queryctrl,
2422         .vidioc_g_ctrl        = vidioc_g_ctrl,
2423         .vidioc_s_ctrl        = vidioc_s_ctrl,
2424         .vidioc_g_frequency   = vidioc_g_frequency,
2425         .vidioc_s_frequency   = vidioc_s_frequency,
2426 #ifdef CONFIG_VIDEO_ADV_DEBUG
2427         .vidioc_g_register    = vidioc_g_register,
2428         .vidioc_s_register    = vidioc_s_register,
2429 #endif
2430 };
2431
2432 static struct video_device em28xx_radio_template = {
2433         .name                 = "em28xx-radio",
2434         .fops                 = &radio_fops,
2435         .ioctl_ops            = &radio_ioctl_ops,
2436         .minor                = -1,
2437 };
2438
2439 /******************************** usb interface ******************************/
2440
2441
2442
2443 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2444                                         const struct video_device *template,
2445                                         const char *type_name)
2446 {
2447         struct video_device *vfd;
2448
2449         vfd = video_device_alloc();
2450         if (NULL == vfd)
2451                 return NULL;
2452
2453         *vfd            = *template;
2454         vfd->minor      = -1;
2455         vfd->v4l2_dev   = &dev->v4l2_dev;
2456         vfd->release    = video_device_release;
2457         vfd->debug      = video_debug;
2458
2459         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2460                  dev->name, type_name);
2461
2462         return vfd;
2463 }
2464
2465 int em28xx_register_analog_devices(struct em28xx *dev)
2466 {
2467       u8 val;
2468         int ret;
2469
2470         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2471                 dev->name,
2472                 (EM28XX_VERSION_CODE >> 16) & 0xff,
2473                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2474
2475         /* set default norm */
2476         dev->norm = em28xx_video_template.current_norm;
2477         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2478         dev->ctl_input = 0;
2479
2480         /* Analog specific initialization */
2481         dev->format = &format[0];
2482         em28xx_set_video_format(dev, format[0].fourcc,
2483                                 norm_maxw(dev), norm_maxh(dev));
2484
2485         video_mux(dev, dev->ctl_input);
2486
2487         /* Audio defaults */
2488         dev->mute = 1;
2489         dev->volume = 0x1f;
2490
2491 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2492         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2493         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2494                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2495
2496         em28xx_set_outfmt(dev);
2497         em28xx_colorlevels_set_default(dev);
2498         em28xx_compression_disable(dev);
2499
2500         /* allocate and fill video video_device struct */
2501         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2502         if (!dev->vdev) {
2503                 em28xx_errdev("cannot allocate video_device.\n");
2504                 return -ENODEV;
2505         }
2506
2507         /* register v4l2 video video_device */
2508         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2509                                        video_nr[dev->devno]);
2510         if (ret) {
2511                 em28xx_errdev("unable to register video device (error=%i).\n",
2512                               ret);
2513                 return ret;
2514         }
2515
2516         /* Allocate and fill vbi video_device struct */
2517         if (em28xx_vbi_supported(dev) == 1) {
2518                 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2519                                                 "vbi");
2520
2521                 /* register v4l2 vbi video_device */
2522                 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2523                                             vbi_nr[dev->devno]);
2524                 if (ret < 0) {
2525                         em28xx_errdev("unable to register vbi device\n");
2526                         return ret;
2527                 }
2528         }
2529
2530         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2531                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2532                                                   "radio");
2533                 if (!dev->radio_dev) {
2534                         em28xx_errdev("cannot allocate video_device.\n");
2535                         return -ENODEV;
2536                 }
2537                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2538                                             radio_nr[dev->devno]);
2539                 if (ret < 0) {
2540                         em28xx_errdev("can't register radio device\n");
2541                         return ret;
2542                 }
2543                 em28xx_info("Registered radio device as %s\n",
2544                             video_device_node_name(dev->radio_dev));
2545         }
2546
2547         em28xx_info("V4L2 video device registered as %s\n",
2548                     video_device_node_name(dev->vdev));
2549
2550         if (dev->vbi_dev)
2551                 em28xx_info("V4L2 VBI device registered as %s\n",
2552                             video_device_node_name(dev->vbi_dev));
2553
2554         return 0;
2555 }