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>
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.
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.
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
23 * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
25 * This file will hold API related functions, both internal (firmware api)
26 * and external (v4l2, etc)
29 * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
30 * and Takeru KOMORIYA<komoriya@paken.org>
32 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
33 * using information provided by Jiun-Kuei Jung @ AVerMedia.
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"
43 #include "ivtv-cards.h"
44 #include "ivtv-streams.h"
46 static struct file_operations ivtv_v4l2_enc_fops = {
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,
56 static struct file_operations ivtv_v4l2_dec_fops = {
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,
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 */
78 enum v4l2_buf_type buf_type;
79 struct file_operations *fops;
80 } ivtv_stream_info[] = {
81 { /* IVTV_ENC_STREAM_TYPE_MPG */
84 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
87 { /* IVTV_ENC_STREAM_TYPE_YUV */
89 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
90 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
93 { /* IVTV_ENC_STREAM_TYPE_VBI */
96 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
99 { /* IVTV_ENC_STREAM_TYPE_PCM */
101 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
102 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
105 { /* IVTV_ENC_STREAM_TYPE_RAD */
108 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
111 { /* IVTV_DEC_STREAM_TYPE_MPG */
113 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
114 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
117 { /* IVTV_DEC_STREAM_TYPE_VBI */
119 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
120 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
123 { /* IVTV_DEC_STREAM_TYPE_VOUT */
125 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
126 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
129 { /* IVTV_DEC_STREAM_TYPE_YUV */
131 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
132 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
137 static void ivtv_stream_init(struct ivtv *itv, int type)
139 struct ivtv_stream *s = &itv->streams[type];
140 struct video_device *dev = s->v4l2dev;
142 /* we need to keep v4l2dev, so restore it afterwards */
143 memset(s, 0, sizeof(*s));
146 /* initialize ivtv_stream fields */
149 s->name = ivtv_stream_info[type].name;
151 if (ivtv_stream_info[type].pio)
152 s->dma = PCI_DMA_NONE;
154 s->dma = ivtv_stream_info[type].dma;
155 s->buf_size = itv->stream_buf_size[type];
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);
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);
169 static int ivtv_prep_dev(struct ivtv *itv, int type)
171 struct ivtv_stream *s = &itv->streams[type];
172 int minor_offset = ivtv_stream_info[type].minor_offset;
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
181 s->name = ivtv_stream_info[type].name;
183 /* Check whether the radio is supported */
184 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
186 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
189 /* card number + user defined offset + device offset */
190 minor = itv->num + ivtv_first_minor + minor_offset;
192 /* User explicitly selected 0 buffers for these streams, so don't
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);
200 ivtv_stream_init(itv, type);
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);
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;
214 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
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;
225 /* Initialize v4l2 variables and prepare v4l2 devices */
226 int ivtv_streams_setup(struct ivtv *itv)
230 /* Setup V4L2 Devices */
231 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
233 if (ivtv_prep_dev(itv, type))
236 if (itv->streams[type].v4l2dev == NULL)
239 /* Allocate Stream */
240 if (ivtv_stream_alloc(&itv->streams[type]))
243 if (type == IVTV_MAX_STREAMS)
246 /* One or more streams could not be initialized. Clean 'em all up. */
247 ivtv_streams_cleanup(itv);
251 static int ivtv_reg_dev(struct ivtv *itv, int type)
253 struct ivtv_stream *s = &itv->streams[type];
254 int vfl_type = ivtv_stream_info[type].vfl_type;
257 if (s->v4l2dev == NULL)
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",
266 video_device_release(s->v4l2dev);
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]);
277 IVTV_INFO("Registered device radio%d for %s\n",
278 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
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]);
286 IVTV_INFO("Registered device vbi%d for %s\n",
287 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
293 /* Register v4l2 devices */
294 int ivtv_streams_register(struct ivtv *itv)
299 /* Register V4L2 devices */
300 for (type = 0; type < IVTV_MAX_STREAMS; type++)
301 err |= ivtv_reg_dev(itv, type);
306 /* One or more streams could not be initialized. Clean 'em all up. */
307 ivtv_streams_cleanup(itv);
311 /* Unregister v4l2 devices */
312 void ivtv_streams_cleanup(struct ivtv *itv)
316 /* Teardown all streams */
317 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
318 struct video_device *vdev = itv->streams[type].v4l2dev;
320 itv->streams[type].v4l2dev = NULL;
324 ivtv_stream_free(&itv->streams[type]);
325 /* Unregister device */
326 video_unregister_device(vdev);
330 static void ivtv_vbi_setup(struct ivtv *itv)
332 int raw = itv->vbi.sliced_in->service_set == 0;
333 u32 data[CX2341X_MBOX_MAX_DATA];
338 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
340 /* setup VBI registers */
341 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
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) */
349 lines = itv->vbi.count * 2;
351 lines = itv->is_60hz ? 24 : 38;
352 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
356 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
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);
362 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
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 */
376 data[3] = 0x20602060;
377 data[4] = 0x30703070;
379 data[3] = 0xB0F0B0F0;
380 data[4] = 0xA0E0A0E0;
382 /* Lines per frame */
385 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
387 /* Setup VBI for the saa7115 digitizer */
389 data[3] = 0x25256262;
390 data[4] = 0x387F7F7F;
392 data[3] = 0xABABECEC;
393 data[4] = 0xB6F1F1F1;
395 /* Lines per frame */
398 data[6] = itv->vbi.enc_size / lines;
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]);
405 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
407 /* returns the VBI encoder memory area. */
408 itv->vbi.enc_start = data[2];
409 itv->vbi.fpi = data[0];
413 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
414 itv->vbi.enc_start, data[1], itv->vbi.fpi);
417 Note that the sliced argument seems to have no effect. */
418 for (i = 2; i <= 24; i++) {
422 valid = i >= 10 && i < 22;
424 valid = i >= 6 && i < 24;
426 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
428 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
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? */
440 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
442 u32 data[CX2341X_MBOX_MAX_DATA];
443 struct ivtv *itv = s->itv;
444 int captype = 0, subtype = 0;
445 int enable_passthrough = 0;
447 if (s->v4l2dev == NULL)
450 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
453 case IVTV_ENC_STREAM_TYPE_MPG:
457 /* Stop Passthrough */
458 if (itv->output_mode == OUT_PASSTHROUGH) {
459 ivtv_passthrough_mode(itv, 0);
460 enable_passthrough = 1;
462 itv->mpg_data_received = itv->vbi_data_inserted = 0;
463 itv->dualwatch_jiffies = jiffies;
464 itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300;
465 itv->search_pack_header = 0;
468 case IVTV_ENC_STREAM_TYPE_YUV:
469 if (itv->output_mode == OUT_PASSTHROUGH) {
471 subtype = 11; /* video+audio+decoder */
477 case IVTV_ENC_STREAM_TYPE_PCM:
481 case IVTV_ENC_STREAM_TYPE_VBI:
486 itv->vbi.inserted_frame = 0;
487 memset(itv->vbi.sliced_mpeg_size,
488 0, sizeof(itv->vbi.sliced_mpeg_size));
493 s->subtype = subtype;
494 s->buffers_stolen = 0;
496 /* mute/unmute video */
497 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
498 test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 0x00808001 : 0);
500 /* Clear Streamoff flags in case left from last capture */
501 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
503 if (atomic_read(&itv->capturing) == 0) {
506 /* Always use frame based mode. Experiments have demonstrated that byte
507 stream based mode results in dropped frames and corruption. Not often,
508 but occasionally. Many thanks go to Leonard Orb who spent a lot of
509 effort and time trying to trace the cause of the drop outs. */
510 /* 1 frame per DMA */
511 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
512 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
514 /* Stuff from Windows, we don't know what it is */
515 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
516 /* According to the docs, this should be correct. However, this is
517 untested. I don't dare enable this without having tested it.
518 Only very few old cards actually have this hardware combination.
519 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
520 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
522 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
523 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
524 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
525 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
527 /* assign placeholder */
528 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
529 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
531 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
533 else if (itv->card->hw_all & IVTV_HW_SAA7114)
538 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
541 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
545 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
546 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
547 itv->pgm_info_offset = data[0];
548 itv->pgm_info_num = data[1];
549 itv->pgm_info_write_idx = 0;
550 itv->pgm_info_read_idx = 0;
552 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
553 itv->pgm_info_offset, itv->pgm_info_num);
555 /* Setup API for Stream */
556 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
560 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
561 /* event notification (on) */
562 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
563 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
566 if (atomic_read(&itv->capturing) == 0) {
567 /* Clear all Pending Interrupts */
568 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
570 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
572 /* Initialize Digitizer for Capture */
573 itv->video_dec_func(itv, VIDIOC_STREAMOFF, 0);
574 ivtv_msleep_timeout(300, 1);
575 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
576 itv->video_dec_func(itv, VIDIOC_STREAMON, 0);
580 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
582 IVTV_DEBUG_WARN( "Error starting capture!\n");
586 /* Start Passthrough */
587 if (enable_passthrough) {
588 ivtv_passthrough_mode(itv, 1);
591 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
592 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
594 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
596 /* you're live! sit back and await interrupts :) */
597 atomic_inc(&itv->capturing);
601 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
603 u32 data[CX2341X_MBOX_MAX_DATA];
604 struct ivtv *itv = s->itv;
607 if (s->v4l2dev == NULL)
610 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
612 /* set audio mode to left/stereo for dual/stereo mode. */
613 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
615 /* set number of internal decoder buffers */
616 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
619 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
621 /* extract from user packets */
622 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
623 itv->vbi.dec_start = data[0];
625 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
626 itv->vbi.dec_start, data[1]);
628 /* set decoder source settings */
629 /* Data type: 0 = mpeg from host,
630 1 = yuv from encoder,
633 case IVTV_DEC_STREAM_TYPE_YUV:
634 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
635 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
637 case IVTV_DEC_STREAM_TYPE_MPG:
642 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
643 itv->params.width, itv->params.height, itv->params.audio_properties)) {
644 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
649 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
651 struct ivtv *itv = s->itv;
653 if (s->v4l2dev == NULL)
656 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
657 return 0; /* already started */
659 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
661 /* Clear Streamoff */
662 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
663 /* Initialize Decoder */
664 /* Reprogram Decoder YUV Buffers for YUV */
665 write_reg(yuv_offset[0] >> 4, 0x82c);
666 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
667 write_reg(yuv_offset[0] >> 4, 0x834);
668 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
670 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
672 write_reg_sync(0x00108080, 0x2898);
673 /* Enable YUV decoder output */
674 write_reg_sync(0x01, IVTV_REG_VDM);
677 ivtv_setup_v4l2_decode_stream(s);
679 /* set dma size to 65536 bytes */
680 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
682 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
684 /* Zero out decoder counters */
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
686 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
687 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
688 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
689 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
690 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
691 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
692 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
694 /* turn on notification of dual/stereo mode change */
695 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
698 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
700 /* Clear the following Interrupt mask bits for decoding */
701 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
702 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
704 /* you're live! sit back and await interrupts :) */
705 atomic_inc(&itv->decoding);
709 void ivtv_stop_all_captures(struct ivtv *itv)
713 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
714 struct ivtv_stream *s = &itv->streams[i];
716 if (s->v4l2dev == NULL)
718 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
719 ivtv_stop_v4l2_encode_stream(s, 0);
724 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
726 struct ivtv *itv = s->itv;
727 DECLARE_WAITQUEUE(wait, current);
731 if (s->v4l2dev == NULL)
734 /* This function assumes that you are allowed to stop the capture
735 and that we are actually capturing */
737 IVTV_DEBUG_INFO("Stop Capture\n");
739 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
741 if (atomic_read(&itv->capturing) == 0)
745 case IVTV_ENC_STREAM_TYPE_YUV:
748 case IVTV_ENC_STREAM_TYPE_PCM:
751 case IVTV_ENC_STREAM_TYPE_VBI:
754 case IVTV_ENC_STREAM_TYPE_MPG:
760 /* Stop Capture Mode */
761 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
768 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
769 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
771 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
772 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
773 /* only run these if we're shutting down the last cap */
774 unsigned long duration;
775 unsigned long then = jiffies;
777 add_wait_queue(&itv->eos_waitq, &wait);
779 set_current_state(TASK_INTERRUPTIBLE);
781 /* wait 2s for EOS interrupt */
782 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
783 jiffies < then + msecs_to_jiffies (2000)) {
784 schedule_timeout(msecs_to_jiffies(10));
787 /* To convert jiffies to ms, we must multiply by 1000
788 * and divide by HZ. To avoid runtime division, we
789 * convert this to multiplication by 1000/HZ.
790 * Since integer division truncates, we get the best
791 * accuracy if we do a rounding calculation of the constant.
792 * Think of the case where HZ is 1024.
794 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
796 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
797 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
798 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
800 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
802 set_current_state(TASK_RUNNING);
803 remove_wait_queue(&itv->eos_waitq, &wait);
804 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
807 /* Handle any pending interrupts */
808 ivtv_msleep_timeout(100, 1);
811 atomic_dec(&itv->capturing);
813 /* Clear capture and no-read bits */
814 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
816 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
817 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
819 if (atomic_read(&itv->capturing) > 0) {
823 /* Set the following Interrupt mask bits for capture */
824 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
825 del_timer(&itv->dma_timer);
827 /* event notification (off) */
828 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
829 /* type: 0 = refresh */
830 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
831 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
832 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
840 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
842 struct ivtv *itv = s->itv;
844 if (s->v4l2dev == NULL)
847 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
850 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
853 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
856 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
859 /* Wait until the decoder is no longer running */
861 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
862 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
865 u32 data[CX2341X_MBOX_MAX_DATA];
866 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
867 if (s->q_full.buffers + s->q_dma.buffers == 0) {
872 if (ivtv_msleep_timeout(100, 1))
876 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
878 /* turn off notification of dual/stereo mode change */
879 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
881 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
882 del_timer(&itv->dma_timer);
884 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
885 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
886 ivtv_flush_queues(s);
888 /* decrement decoding */
889 atomic_dec(&itv->decoding);
891 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
892 wake_up(&itv->event_waitq);
894 /* wake up wait queues */
900 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
902 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
903 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
905 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
908 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
910 /* Prevent others from starting/stopping streams while we
911 initiate/terminate passthrough mode */
913 if (itv->output_mode == OUT_PASSTHROUGH) {
916 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
919 /* Fully initialize stream, and then unflag init */
920 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
921 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
923 /* Setup YUV Decoder */
924 ivtv_setup_v4l2_decode_stream(dec_stream);
927 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
928 atomic_inc(&itv->decoding);
930 /* Setup capture if not already done */
931 if (atomic_read(&itv->capturing) == 0) {
932 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
935 /* Start Passthrough Mode */
936 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
937 atomic_inc(&itv->capturing);
941 if (itv->output_mode != OUT_PASSTHROUGH)
944 /* Stop Passthrough Mode */
945 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
946 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
948 atomic_dec(&itv->capturing);
949 atomic_dec(&itv->decoding);
950 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
951 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
952 itv->output_mode = OUT_NONE;