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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / media / video / ivtv / ivtv-streams.c
blob24d98ecf35ad13de77f4d2457de6c8ba09c9c584
1 /*
2 init/start/stop/exit stream functions
3 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
4 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 /* License: GPL
23 * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
24 *
25 * This file will hold API related functions, both internal (firmware api)
26 * and external (v4l2, etc)
27 *
28 * -----
29 * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
30 * and Takeru KOMORIYA<komoriya@paken.org>
31 *
32 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
33 * using information provided by Jiun-Kuei Jung @ AVerMedia.
34 */
35
36 #include "ivtv-driver.h"
37 #include "ivtv-fileops.h"
38 #include "ivtv-queue.h"
39 #include "ivtv-mailbox.h"
40 #include "ivtv-ioctl.h"
41 #include "ivtv-irq.h"
42 #include "ivtv-yuv.h"
43 #include "ivtv-cards.h"
44 #include "ivtv-streams.h"
45
46 static const struct file_operations ivtv_v4l2_enc_fops = {
47 .owner = THIS_MODULE,
48 .read = ivtv_v4l2_read,
49 .write = ivtv_v4l2_write,
50 .open = ivtv_v4l2_open,
51 .ioctl = ivtv_v4l2_ioctl,
52 .release = ivtv_v4l2_close,
53 .poll = ivtv_v4l2_enc_poll,
54 };
55
56 static const struct file_operations ivtv_v4l2_dec_fops = {
57 .owner = THIS_MODULE,
58 .read = ivtv_v4l2_read,
59 .write = ivtv_v4l2_write,
60 .open = ivtv_v4l2_open,
61 .ioctl = ivtv_v4l2_ioctl,
62 .release = ivtv_v4l2_close,
63 .poll = ivtv_v4l2_dec_poll,
64 };
65
66 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
67 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
68 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
69 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
70 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
71 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
72
73 static struct {
74 const char *name;
75 int vfl_type;
76 int minor_offset;
77 int dma, pio;
78 enum v4l2_buf_type buf_type;
79 const struct file_operations *fops;
80 } ivtv_stream_info[] = {
81 { /* IVTV_ENC_STREAM_TYPE_MPG */
82 "encoder MPG",
83 VFL_TYPE_GRABBER, 0,
84 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
85 &ivtv_v4l2_enc_fops
86 },
87 { /* IVTV_ENC_STREAM_TYPE_YUV */
88 "encoder YUV",
89 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
90 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
91 &ivtv_v4l2_enc_fops
92 },
93 { /* IVTV_ENC_STREAM_TYPE_VBI */
94 "encoder VBI",
95 VFL_TYPE_VBI, 0,
96 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
97 &ivtv_v4l2_enc_fops
98 },
99 { /* IVTV_ENC_STREAM_TYPE_PCM */
100 "encoder PCM",
101 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
102 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
103 &ivtv_v4l2_enc_fops
104 },
105 { /* IVTV_ENC_STREAM_TYPE_RAD */
106 "encoder radio",
107 VFL_TYPE_RADIO, 0,
108 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
109 &ivtv_v4l2_enc_fops
110 },
111 { /* IVTV_DEC_STREAM_TYPE_MPG */
112 "decoder MPG",
113 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
114 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
115 &ivtv_v4l2_dec_fops
116 },
117 { /* IVTV_DEC_STREAM_TYPE_VBI */
118 "decoder VBI",
119 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
120 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
121 &ivtv_v4l2_enc_fops
122 },
123 { /* IVTV_DEC_STREAM_TYPE_VOUT */
124 "decoder VOUT",
125 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
126 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
127 &ivtv_v4l2_dec_fops
128 },
129 { /* IVTV_DEC_STREAM_TYPE_YUV */
130 "decoder YUV",
131 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
132 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
133 &ivtv_v4l2_dec_fops
134 }
135 };
136
137 static void ivtv_stream_init(struct ivtv *itv, int type)
138 {
139 struct ivtv_stream *s = &itv->streams[type];
140 struct video_device *dev = s->v4l2dev;
141
142 /* we need to keep v4l2dev, so restore it afterwards */
143 memset(s, 0, sizeof(*s));
144 s->v4l2dev = dev;
145
146 /* initialize ivtv_stream fields */
147 s->itv = itv;
148 s->type = type;
149 s->name = ivtv_stream_info[type].name;
150
151 if (ivtv_stream_info[type].pio)
152 s->dma = PCI_DMA_NONE;
153 else
154 s->dma = ivtv_stream_info[type].dma;
155 s->buf_size = itv->stream_buf_size[type];
156 if (s->buf_size)
157 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
158 spin_lock_init(&s->qlock);
159 init_waitqueue_head(&s->waitq);
160 s->id = -1;
161 s->sg_handle = IVTV_DMA_UNMAPPED;
162 ivtv_queue_init(&s->q_free);
163 ivtv_queue_init(&s->q_full);
164 ivtv_queue_init(&s->q_dma);
165 ivtv_queue_init(&s->q_predma);
166 ivtv_queue_init(&s->q_io);
167 }
168
169 static int ivtv_prep_dev(struct ivtv *itv, int type)
170 {
171 struct ivtv_stream *s = &itv->streams[type];
172 int minor_offset = ivtv_stream_info[type].minor_offset;
173 int minor;
174
175 /* These four fields are always initialized. If v4l2dev == NULL, then
176 this stream is not in use. In that case no other fields but these
177 four can be used. */
178 s->v4l2dev = NULL;
179 s->itv = itv;
180 s->type = type;
181 s->name = ivtv_stream_info[type].name;
182
183 /* Check whether the radio is supported */
184 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
185 return 0;
186 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
187 return 0;
188
189 /* card number + user defined offset + device offset */
190 minor = itv->num + ivtv_first_minor + minor_offset;
191
192 /* User explicitly selected 0 buffers for these streams, so don't
193 create them. */
194 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
195 itv->options.kilobytes[type] == 0) {
196 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
197 return 0;
198 }
199
200 ivtv_stream_init(itv, type);
201
202 /* allocate and initialize the v4l2 video device structure */
203 s->v4l2dev = video_device_alloc();
204 if (s->v4l2dev == NULL) {
205 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
206 return -ENOMEM;
207 }
208
209 s->v4l2dev->type = VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT |
210 VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER;
211 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
212 s->v4l2dev->type |= VID_TYPE_MPEG_DECODER;
213 }
214 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
215 itv->num, s->name);
216
217 s->v4l2dev->minor = minor;
218 s->v4l2dev->dev = &itv->dev->dev;
219 s->v4l2dev->fops = ivtv_stream_info[type].fops;
220 s->v4l2dev->release = video_device_release;
221
222 return 0;
223 }
224
225 /* Initialize v4l2 variables and prepare v4l2 devices */
226 int ivtv_streams_setup(struct ivtv *itv)
227 {
228 int type;
229
230 /* Setup V4L2 Devices */
231 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
232 /* Prepare device */
233 if (ivtv_prep_dev(itv, type))
234 break;
235
236 if (itv->streams[type].v4l2dev == NULL)
237 continue;
238
239 /* Allocate Stream */
240 if (ivtv_stream_alloc(&itv->streams[type]))
241 break;
242 }
243 if (type == IVTV_MAX_STREAMS)
244 return 0;
245
246 /* One or more streams could not be initialized. Clean 'em all up. */
247 ivtv_streams_cleanup(itv);
248 return -ENOMEM;
249 }
250
251 static int ivtv_reg_dev(struct ivtv *itv, int type)
252 {
253 struct ivtv_stream *s = &itv->streams[type];
254 int vfl_type = ivtv_stream_info[type].vfl_type;
255 int minor;
256
257 if (s->v4l2dev == NULL)
258 return 0;
259
260 minor = s->v4l2dev->minor;
261 /* Register device. First try the desired minor, then any free one. */
262 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
263 video_register_device(s->v4l2dev, vfl_type, -1)) {
264 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
265 s->name, minor);
266 video_device_release(s->v4l2dev);
267 s->v4l2dev = NULL;
268 return -ENOMEM;
269 }
270
271 switch (vfl_type) {
272 case VFL_TYPE_GRABBER:
273 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
274 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
275 break;
276 case VFL_TYPE_RADIO:
277 IVTV_INFO("Registered device radio%d for %s\n",
278 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
279 break;
280 case VFL_TYPE_VBI:
281 if (itv->options.kilobytes[type])
282 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
283 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
284 s->name, itv->options.kilobytes[type]);
285 else
286 IVTV_INFO("Registered device vbi%d for %s\n",
287 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
288 break;
289 }
290 return 0;
291 }
292
293 /* Register v4l2 devices */
294 int ivtv_streams_register(struct ivtv *itv)
295 {
296 int type;
297 int err = 0;
298
299 /* Register V4L2 devices */
300 for (type = 0; type < IVTV_MAX_STREAMS; type++)
301 err |= ivtv_reg_dev(itv, type);
302
303 if (err == 0)
304 return 0;
305
306 /* One or more streams could not be initialized. Clean 'em all up. */
307 ivtv_streams_cleanup(itv);
308 return -ENOMEM;
309 }
310
311 /* Unregister v4l2 devices */
312 void ivtv_streams_cleanup(struct ivtv *itv)
313 {
314 int type;
315
316 /* Teardown all streams */
317 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
318 struct video_device *vdev = itv->streams[type].v4l2dev;
319
320 itv->streams[type].v4l2dev = NULL;
321 if (vdev == NULL)
322 continue;
323
324 ivtv_stream_free(&itv->streams[type]);
325 /* Unregister device */
326 video_unregister_device(vdev);
327 }
328 }
329
330 static void ivtv_vbi_setup(struct ivtv *itv)
331 {
332 int raw = itv->vbi.sliced_in->service_set == 0;
333 u32 data[CX2341X_MBOX_MAX_DATA];
334 int lines;
335 int i;
336
337 /* Reset VBI */
338 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
339
340 /* setup VBI registers */
341 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
342
343 /* determine number of lines and total number of VBI bytes.
344 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
345 The '- 1' byte is probably an unused U or V byte. Or something...
346 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
347 header, 42 data bytes + checksum (to be confirmed) */
348 if (raw) {
349 lines = itv->vbi.count * 2;
350 } else {
351 lines = itv->is_60hz ? 24 : 38;
352 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
353 lines += 2;
354 }
355
356 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
357
358 /* Note: sliced vs raw flag doesn't seem to have any effect
359 TODO: check mode (0x02) value with older ivtv versions. */
360 data[0] = raw | 0x02 | (0xbd << 8);
361
362 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
363 data[1] = 1;
364 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
365 data[2] = raw ? 4 : 8;
366 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
367 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
368 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
369 code. These values for raw VBI are obtained from a driver disassembly. The sliced
370 start/stop codes was deduced from this, but they do not appear in the driver.
371 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
372 However, I have no idea what these values are for. */
373 if (itv->hw_flags & IVTV_HW_CX25840) {
374 /* Setup VBI for the cx25840 digitizer */
375 if (raw) {
376 data[3] = 0x20602060;
377 data[4] = 0x30703070;
378 } else {
379 data[3] = 0xB0F0B0F0;
380 data[4] = 0xA0E0A0E0;
381 }
382 /* Lines per frame */
383 data[5] = lines;
384 /* bytes per line */
385 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
386 } else {
387 /* Setup VBI for the saa7115 digitizer */
388 if (raw) {
389 data[3] = 0x25256262;
390 data[4] = 0x387F7F7F;
391 } else {
392 data[3] = 0xABABECEC;
393 data[4] = 0xB6F1F1F1;
394 }
395 /* Lines per frame */
396 data[5] = lines;
397 /* bytes per line */
398 data[6] = itv->vbi.enc_size / lines;
399 }
400
401 IVTV_DEBUG_INFO(
402 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
403 data[0], data[1], data[2], data[5], data[6]);
404
405 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
406
407 /* returns the VBI encoder memory area. */
408 itv->vbi.enc_start = data[2];
409 itv->vbi.fpi = data[0];
410 if (!itv->vbi.fpi)
411 itv->vbi.fpi = 1;
412
413 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
414 itv->vbi.enc_start, data[1], itv->vbi.fpi);
415
416 /* select VBI lines.
417 Note that the sliced argument seems to have no effect. */
418 for (i = 2; i <= 24; i++) {
419 int valid;
420
421 if (itv->is_60hz) {
422 valid = i >= 10 && i < 22;
423 } else {
424 valid = i >= 6 && i < 24;
425 }
426 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
427 valid, 0 , 0, 0);
428 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
429 valid, 0, 0, 0);
430 }
431
432 /* Remaining VBI questions:
433 - Is it possible to select particular VBI lines only for inclusion in the MPEG
434 stream? Currently you can only get the first X lines.
435 - Is mixed raw and sliced VBI possible?
436 - What's the meaning of the raw/sliced flag?
437 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
438 }
439
440 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
441 {
442 u32 data[CX2341X_MBOX_MAX_DATA];
443 struct ivtv *itv = s->itv;
444 struct cx2341x_mpeg_params *p = &itv->params;
445 int captype = 0, subtype = 0;
446 int enable_passthrough = 0;
447
448 if (s->v4l2dev == NULL)
449 return -EINVAL;
450
451 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
452
453 switch (s->type) {
454 case IVTV_ENC_STREAM_TYPE_MPG:
455 captype = 0;
456 subtype = 3;
457
458 /* Stop Passthrough */
459 if (itv->output_mode == OUT_PASSTHROUGH) {
460 ivtv_passthrough_mode(itv, 0);
461 enable_passthrough = 1;
462 }
463 itv->mpg_data_received = itv->vbi_data_inserted = 0;
464 itv->dualwatch_jiffies = jiffies;
465 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
466 itv->search_pack_header = 0;
467 break;
468
469 case IVTV_ENC_STREAM_TYPE_YUV:
470 if (itv->output_mode == OUT_PASSTHROUGH) {
471 captype = 2;
472 subtype = 11; /* video+audio+decoder */
473 break;
474 }
475 captype = 1;
476 subtype = 1;
477 break;
478 case IVTV_ENC_STREAM_TYPE_PCM:
479 captype = 1;
480 subtype = 2;
481 break;
482 case IVTV_ENC_STREAM_TYPE_VBI:
483 captype = 1;
484 subtype = 4;
485
486 itv->vbi.frame = 0;
487 itv->vbi.inserted_frame = 0;
488 memset(itv->vbi.sliced_mpeg_size,
489 0, sizeof(itv->vbi.sliced_mpeg_size));
490 break;
491 default:
492 return -EINVAL;
493 }
494 s->subtype = subtype;
495 s->buffers_stolen = 0;
496
497 /* Clear Streamoff flags in case left from last capture */
498 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
499
500 if (atomic_read(&itv->capturing) == 0) {
501 int digitizer;
502
503 /* Always use frame based mode. Experiments have demonstrated that byte
504 stream based mode results in dropped frames and corruption. Not often,
505 but occasionally. Many thanks go to Leonard Orb who spent a lot of
506 effort and time trying to trace the cause of the drop outs. */
507 /* 1 frame per DMA */
508 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
509 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
510
511 /* Stuff from Windows, we don't know what it is */
512 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
513 /* According to the docs, this should be correct. However, this is
514 untested. I don't dare enable this without having tested it.
515 Only very few old cards actually have this hardware combination.
516 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
517 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
518 */
519 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
520 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
521 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
522 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
523
524 /* assign placeholder */
525 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
526 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
527
528 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
529 digitizer = 0xF1;
530 else if (itv->card->hw_all & IVTV_HW_SAA7114)
531 digitizer = 0xEF;
532 else /* cx25840 */
533 digitizer = 0x140;
534
535 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
536
537 /* Setup VBI */
538 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
539 ivtv_vbi_setup(itv);
540 }
541
542 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
543 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
544 itv->pgm_info_offset = data[0];
545 itv->pgm_info_num = data[1];
546 itv->pgm_info_write_idx = 0;
547 itv->pgm_info_read_idx = 0;
548
549 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
550 itv->pgm_info_offset, itv->pgm_info_num);
551
552 /* Setup API for Stream */
553 cx2341x_update(itv, ivtv_api_func, NULL, p);
554
555 /* mute if capturing radio */
556 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
557 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
558 1 | (p->video_mute_yuv << 8));
559 }
560
561 /* Vsync Setup */
562 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
563 /* event notification (on) */
564 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
565 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
566 }
567
568 if (atomic_read(&itv->capturing) == 0) {
569 /* Clear all Pending Interrupts */
570 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
571
572 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
573
574 /* Initialize Digitizer for Capture */
575 itv->video_dec_func(itv, VIDIOC_STREAMOFF, NULL);
576 ivtv_msleep_timeout(300, 1);
577 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
578 itv->video_dec_func(itv, VIDIOC_STREAMON, NULL);
579 }
580
581 /* begin_capture */
582 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
583 {
584 IVTV_DEBUG_WARN( "Error starting capture!\n");
585 return -EINVAL;
586 }
587
588 /* Start Passthrough */
589 if (enable_passthrough) {
590 ivtv_passthrough_mode(itv, 1);
591 }
592
593 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
594 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
595 else
596 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
597
598 /* you're live! sit back and await interrupts :) */
599 atomic_inc(&itv->capturing);
600 return 0;
601 }
602
603 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
604 {
605 u32 data[CX2341X_MBOX_MAX_DATA];
606 struct ivtv *itv = s->itv;
607 struct cx2341x_mpeg_params *p = &itv->params;
608 int datatype;
609
610 if (s->v4l2dev == NULL)
611 return -EINVAL;
612
613 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
614
615 /* set audio mode to left/stereo for dual/stereo mode. */
616 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
617
618 /* set number of internal decoder buffers */
619 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
620
621 /* prebuffering */
622 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
623
624 /* extract from user packets */
625 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
626 itv->vbi.dec_start = data[0];
627
628 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
629 itv->vbi.dec_start, data[1]);
630
631 /* set decoder source settings */
632 /* Data type: 0 = mpeg from host,
633 1 = yuv from encoder,
634 2 = yuv_from_host */
635 switch (s->type) {
636 case IVTV_DEC_STREAM_TYPE_YUV:
637 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
638 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
639 break;
640 case IVTV_DEC_STREAM_TYPE_MPG:
641 default:
642 datatype = 0;
643 break;
644 }
645 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
646 p->width, p->height, p->audio_properties)) {
647 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
648 }
649 return 0;
650 }
651
652 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
653 {
654 struct ivtv *itv = s->itv;
655
656 if (s->v4l2dev == NULL)
657 return -EINVAL;
658
659 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
660 return 0; /* already started */
661
662 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
663
664 ivtv_setup_v4l2_decode_stream(s);
665
666 /* set dma size to 65536 bytes */
667 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
668
669 /* Clear Streamoff */
670 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
671
672 /* Zero out decoder counters */
673 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
674 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
675 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
676 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
677 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
681
682 /* turn on notification of dual/stereo mode change */
683 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
684
685 /* start playback */
686 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
687
688 /* Clear the following Interrupt mask bits for decoding */
689 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
690 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
691
692 /* you're live! sit back and await interrupts :) */
693 atomic_inc(&itv->decoding);
694 return 0;
695 }
696
697 void ivtv_stop_all_captures(struct ivtv *itv)
698 {
699 int i;
700
701 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
702 struct ivtv_stream *s = &itv->streams[i];
703
704 if (s->v4l2dev == NULL)
705 continue;
706 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
707 ivtv_stop_v4l2_encode_stream(s, 0);
708 }
709 }
710 }
711
712 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
713 {
714 struct ivtv *itv = s->itv;
715 DECLARE_WAITQUEUE(wait, current);
716 int cap_type;
717 int stopmode;
718
719 if (s->v4l2dev == NULL)
720 return -EINVAL;
721
722 /* This function assumes that you are allowed to stop the capture
723 and that we are actually capturing */
724
725 IVTV_DEBUG_INFO("Stop Capture\n");
726
727 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
728 return 0;
729 if (atomic_read(&itv->capturing) == 0)
730 return 0;
731
732 switch (s->type) {
733 case IVTV_ENC_STREAM_TYPE_YUV:
734 cap_type = 1;
735 break;
736 case IVTV_ENC_STREAM_TYPE_PCM:
737 cap_type = 1;
738 break;
739 case IVTV_ENC_STREAM_TYPE_VBI:
740 cap_type = 1;
741 break;
742 case IVTV_ENC_STREAM_TYPE_MPG:
743 default:
744 cap_type = 0;
745 break;
746 }
747
748 /* Stop Capture Mode */
749 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
750 stopmode = 0;
751 } else {
752 stopmode = 1;
753 }
754
755 /* end_capture */
756 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
757 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
758
759 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
760 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
761 /* only run these if we're shutting down the last cap */
762 unsigned long duration;
763 unsigned long then = jiffies;
764
765 add_wait_queue(&itv->eos_waitq, &wait);
766
767 set_current_state(TASK_INTERRUPTIBLE);
768
769 /* wait 2s for EOS interrupt */
770 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
771 jiffies < then + msecs_to_jiffies (2000)) {
772 schedule_timeout(msecs_to_jiffies(10));
773 }
774
775 /* To convert jiffies to ms, we must multiply by 1000
776 * and divide by HZ. To avoid runtime division, we
777 * convert this to multiplication by 1000/HZ.
778 * Since integer division truncates, we get the best
779 * accuracy if we do a rounding calculation of the constant.
780 * Think of the case where HZ is 1024.
781 */
782 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
783
784 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
785 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
786 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
787 } else {
788 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
789 }
790 set_current_state(TASK_RUNNING);
791 remove_wait_queue(&itv->eos_waitq, &wait);
792 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
793 }
794
795 /* Handle any pending interrupts */
796 ivtv_msleep_timeout(100, 1);
797 }
798
799 atomic_dec(&itv->capturing);
800
801 /* Clear capture and no-read bits */
802 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
803
804 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
805 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
806
807 if (atomic_read(&itv->capturing) > 0) {
808 return 0;
809 }
810
811 /* Set the following Interrupt mask bits for capture */
812 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
813 del_timer(&itv->dma_timer);
814
815 /* event notification (off) */
816 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
817 /* type: 0 = refresh */
818 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
819 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
820 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
821 }
822
823 wake_up(&s->waitq);
824
825 return 0;
826 }
827
828 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
829 {
830 struct ivtv *itv = s->itv;
831
832 if (s->v4l2dev == NULL)
833 return -EINVAL;
834
835 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
836 return -EINVAL;
837
838 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
839 return 0;
840
841 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
842
843 /* Stop Decoder */
844 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
845 u32 tmp = 0;
846
847 /* Wait until the decoder is no longer running */
848 if (pts) {
849 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
850 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
851 }
852 while (1) {
853 u32 data[CX2341X_MBOX_MAX_DATA];
854 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
855 if (s->q_full.buffers + s->q_dma.buffers == 0) {
856 if (tmp == data[3])
857 break;
858 tmp = data[3];
859 }
860 if (ivtv_msleep_timeout(100, 1))
861 break;
862 }
863 }
864 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
865
866 /* turn off notification of dual/stereo mode change */
867 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
868
869 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
870 del_timer(&itv->dma_timer);
871
872 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
873 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
874 ivtv_flush_queues(s);
875
876 /* decrement decoding */
877 atomic_dec(&itv->decoding);
878
879 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
880 wake_up(&itv->event_waitq);
881
882 /* wake up wait queues */
883 wake_up(&s->waitq);
884
885 return 0;
886 }
887
888 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
889 {
890 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
891 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
892
893 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
894 return -EINVAL;
895
896 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
897
898 /* Prevent others from starting/stopping streams while we
899 initiate/terminate passthrough mode */
900 if (enable) {
901 if (itv->output_mode == OUT_PASSTHROUGH) {
902 return 0;
903 }
904 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
905 return -EBUSY;
906
907 /* Fully initialize stream, and then unflag init */
908 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
909 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
910
911 /* Setup YUV Decoder */
912 ivtv_setup_v4l2_decode_stream(dec_stream);
913
914 /* Start Decoder */
915 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
916 atomic_inc(&itv->decoding);
917
918 /* Setup capture if not already done */
919 if (atomic_read(&itv->capturing) == 0) {
920 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
921 }
922
923 /* Start Passthrough Mode */
924 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
925 atomic_inc(&itv->capturing);
926 return 0;
927 }
928
929 if (itv->output_mode != OUT_PASSTHROUGH)
930 return 0;
931
932 /* Stop Passthrough Mode */
933 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
934 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
935
936 atomic_dec(&itv->capturing);
937 atomic_dec(&itv->decoding);
938 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
939 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
940 itv->output_mode = OUT_NONE;
941
942 return 0;
943 }
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