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"
39 #include "ivtv-queue.h"
40 #include "ivtv-mailbox.h"
41 #include "ivtv-audio.h"
42 #include "ivtv-video.h"
44 #include "ivtv-ioctl.h"
46 #include "ivtv-streams.h"
47 #include "ivtv-cards.h"
49 static struct file_operations ivtv_v4l2_enc_fops = {
51 .read = ivtv_v4l2_read,
52 .write = ivtv_v4l2_write,
53 .open = ivtv_v4l2_open,
54 .ioctl = ivtv_v4l2_ioctl,
55 .release = ivtv_v4l2_close,
56 .poll = ivtv_v4l2_enc_poll,
59 static struct file_operations ivtv_v4l2_dec_fops = {
61 .read = ivtv_v4l2_read,
62 .write = ivtv_v4l2_write,
63 .open = ivtv_v4l2_open,
64 .ioctl = ivtv_v4l2_ioctl,
65 .release = ivtv_v4l2_close,
66 .poll = ivtv_v4l2_dec_poll,
74 enum v4l2_buf_type buf_type;
75 struct file_operations *fops;
76 } ivtv_stream_info[] = {
77 { /* IVTV_ENC_STREAM_TYPE_MPG */
80 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
83 { /* IVTV_ENC_STREAM_TYPE_YUV */
85 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
86 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
89 { /* IVTV_ENC_STREAM_TYPE_VBI */
92 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
95 { /* IVTV_ENC_STREAM_TYPE_PCM */
97 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
98 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
101 { /* IVTV_ENC_STREAM_TYPE_RAD */
104 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
107 { /* IVTV_DEC_STREAM_TYPE_MPG */
109 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
110 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
113 { /* IVTV_DEC_STREAM_TYPE_VBI */
115 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
116 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
119 { /* IVTV_DEC_STREAM_TYPE_VOUT */
121 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
122 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
125 { /* IVTV_DEC_STREAM_TYPE_YUV */
127 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
128 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
133 static void ivtv_stream_init(struct ivtv *itv, int type)
135 struct ivtv_stream *s = &itv->streams[type];
136 struct video_device *dev = s->v4l2dev;
138 /* we need to keep v4l2dev, so restore it afterwards */
139 memset(s, 0, sizeof(*s));
142 /* initialize ivtv_stream fields */
145 s->name = ivtv_stream_info[type].name;
147 if (ivtv_stream_info[type].pio)
148 s->dma = PCI_DMA_NONE;
150 s->dma = ivtv_stream_info[type].dma;
151 s->buf_size = itv->stream_buf_size[type];
153 s->buffers = itv->options.megabytes[type] * 1024 * 1024 / s->buf_size;
154 spin_lock_init(&s->qlock);
155 init_waitqueue_head(&s->waitq);
157 s->SG_handle = IVTV_DMA_UNMAPPED;
158 ivtv_queue_init(&s->q_free);
159 ivtv_queue_init(&s->q_full);
160 ivtv_queue_init(&s->q_dma);
161 ivtv_queue_init(&s->q_predma);
162 ivtv_queue_init(&s->q_io);
165 static int ivtv_reg_dev(struct ivtv *itv, int type)
167 struct ivtv_stream *s = &itv->streams[type];
168 int vfl_type = ivtv_stream_info[type].vfl_type;
169 int minor_offset = ivtv_stream_info[type].minor_offset;
172 /* These four fields are always initialized. If v4l2dev == NULL, then
173 this stream is not in use. In that case no other fields but these
178 s->name = ivtv_stream_info[type].name;
180 /* Check whether the radio is supported */
181 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
183 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
186 if (minor_offset >= 0)
187 /* card number + user defined offset + device offset */
188 minor = itv->num + ivtv_first_minor + minor_offset;
192 /* User explicitly selected 0 buffers for these streams, so don't
194 if (minor >= 0 && ivtv_stream_info[type].dma != PCI_DMA_NONE &&
195 itv->options.megabytes[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;
223 /* Register device. First try the desired minor, then any free one. */
224 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
225 video_register_device(s->v4l2dev, vfl_type, -1)) {
226 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
228 video_device_release(s->v4l2dev);
234 /* Don't register a 'hidden' stream (OSD) */
235 IVTV_INFO("Created framebuffer stream for %s\n", s->name);
240 case VFL_TYPE_GRABBER:
241 IVTV_INFO("Registered device video%d for %s (%d MB)\n",
242 s->v4l2dev->minor, s->name, itv->options.megabytes[type]);
245 IVTV_INFO("Registered device radio%d for %s\n",
246 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
249 if (itv->options.megabytes[type])
250 IVTV_INFO("Registered device vbi%d for %s (%d MB)\n",
251 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
252 s->name, itv->options.megabytes[type]);
254 IVTV_INFO("Registered device vbi%d for %s\n",
255 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
261 /* Initialize v4l2 variables and register v4l2 devices */
262 int ivtv_streams_setup(struct ivtv *itv)
266 /* Setup V4L2 Devices */
267 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
268 /* Register Device */
269 if (ivtv_reg_dev(itv, type))
272 if (itv->streams[type].v4l2dev == NULL)
275 /* Allocate Stream */
276 if (ivtv_stream_alloc(&itv->streams[type]))
279 if (type == IVTV_MAX_STREAMS) {
283 /* One or more streams could not be initialized. Clean 'em all up. */
284 ivtv_streams_cleanup(itv);
288 /* Unregister v4l2 devices */
289 void ivtv_streams_cleanup(struct ivtv *itv)
293 /* Teardown all streams */
294 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
295 struct video_device *vdev = itv->streams[type].v4l2dev;
297 itv->streams[type].v4l2dev = NULL;
301 ivtv_stream_free(&itv->streams[type]);
303 if (vdev->minor == -1) /* 'Hidden' never registered stream (OSD) */
304 video_device_release(vdev);
305 else /* All others, just unregister. */
306 video_unregister_device(vdev);
310 static void ivtv_vbi_setup(struct ivtv *itv)
312 int raw = itv->vbi.sliced_in->service_set == 0;
313 u32 data[CX2341X_MBOX_MAX_DATA];
317 /* If Embed then streamtype must be Program */
318 /* TODO: should we really do this? */
319 if (0 && !raw && itv->vbi.insert_mpeg) {
320 itv->params.stream_type = 0;
322 /* assign stream type */
323 ivtv_vapi(itv, CX2341X_ENC_SET_STREAM_TYPE, 1, itv->params.stream_type);
327 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
331 itv->vbi.start[0] = 10;
332 itv->vbi.start[1] = 273;
333 } else { /* PAL/SECAM */
335 itv->vbi.start[0] = 6;
336 itv->vbi.start[1] = 318;
339 /* setup VBI registers */
340 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
342 /* determine number of lines and total number of VBI bytes.
343 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
344 The '- 1' byte is probably an unused U or V byte. Or something...
345 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
346 header, 42 data bytes + checksum (to be confirmed) */
348 lines = itv->vbi.count * 2;
350 lines = itv->is_60hz ? 24 : 38;
351 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
355 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
357 /* Note: sliced vs raw flag doesn't seem to have any effect
358 TODO: check mode (0x02) value with older ivtv versions. */
359 data[0] = raw | 0x02 | (0xbd << 8);
361 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
363 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
364 data[2] = raw ? 4 : 8;
365 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
366 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
367 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
368 code. These values for raw VBI are obtained from a driver disassembly. The sliced
369 start/stop codes was deduced from this, but they do not appear in the driver.
370 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
371 However, I have no idea what these values are for. */
372 if (itv->hw_flags & IVTV_HW_CX25840) {
373 /* Setup VBI for the cx25840 digitizer */
375 data[3] = 0x20602060;
376 data[4] = 0x30703070;
378 data[3] = 0xB0F0B0F0;
379 data[4] = 0xA0E0A0E0;
381 /* Lines per frame */
384 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
386 /* Setup VBI for the saa7115 digitizer */
388 data[3] = 0x25256262;
389 data[4] = 0x387F7F7F;
391 data[3] = 0xABABECEC;
392 data[4] = 0xB6F1F1F1;
394 /* Lines per frame */
397 data[6] = itv->vbi.enc_size / lines;
401 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
402 data[0], data[1], data[2], data[5], data[6]);
404 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
406 /* returns the VBI encoder memory area. */
407 itv->vbi.enc_start = data[2];
408 itv->vbi.fpi = data[0];
412 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d lines 0x%08x\n",
413 itv->vbi.enc_start, data[1], itv->vbi.fpi, itv->digitizer);
416 Note that the sliced argument seems to have no effect. */
417 for (i = 2; i <= 24; i++) {
421 valid = i >= 10 && i < 22;
423 valid = i >= 6 && i < 24;
425 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
427 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
431 /* Remaining VBI questions:
432 - Is it possible to select particular VBI lines only for inclusion in the MPEG
433 stream? Currently you can only get the first X lines.
434 - Is mixed raw and sliced VBI possible?
435 - What's the meaning of the raw/sliced flag?
436 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
439 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
441 u32 data[CX2341X_MBOX_MAX_DATA];
442 struct ivtv *itv = s->itv;
443 int captype = 0, subtype = 0;
444 int enable_passthrough = 0;
446 if (s->v4l2dev == NULL)
449 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
452 case IVTV_ENC_STREAM_TYPE_MPG:
456 /* Stop Passthrough */
457 if (itv->output_mode == OUT_PASSTHROUGH) {
458 ivtv_passthrough_mode(itv, 0);
459 enable_passthrough = 1;
461 itv->mpg_data_received = itv->vbi_data_inserted = 0;
462 itv->dualwatch_jiffies = jiffies;
463 itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300;
464 itv->search_pack_header = 0;
467 case IVTV_ENC_STREAM_TYPE_YUV:
468 if (itv->output_mode == OUT_PASSTHROUGH) {
470 subtype = 11; /* video+audio+decoder */
476 case IVTV_ENC_STREAM_TYPE_PCM:
480 case IVTV_ENC_STREAM_TYPE_VBI:
485 itv->vbi.inserted_frame = 0;
486 memset(itv->vbi.sliced_mpeg_size,
487 0, sizeof(itv->vbi.sliced_mpeg_size));
492 s->subtype = subtype;
493 s->buffers_stolen = 0;
495 /* mute/unmute video */
496 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 1 : 0);
498 /* Clear Streamoff flags in case left from last capture */
499 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
501 if (atomic_read(&itv->capturing) == 0) {
502 /* Always use frame based mode. Experiments have demonstrated that byte
503 stream based mode results in dropped frames and corruption. Not often,
504 but occasionally. Many thanks go to Leonard Orb who spent a lot of
505 effort and time trying to trace the cause of the drop outs. */
506 /* 1 frame per DMA */
507 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
508 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
510 /* Stuff from Windows, we don't know what it is */
511 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
512 /* According to the docs, this should be correct. However, this is
513 untested. I don't dare enable this without having tested it.
514 Only very few old cards actually have this hardware combination.
515 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
516 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
518 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
519 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
520 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
521 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
523 /* assign placeholder */
524 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
525 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
527 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, itv->digitizer, itv->digitizer);
530 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
534 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
535 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
536 itv->pgm_info_offset = data[0];
537 itv->pgm_info_num = data[1];
538 itv->pgm_info_write_idx = 0;
539 itv->pgm_info_read_idx = 0;
541 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
542 itv->pgm_info_offset, itv->pgm_info_num);
544 /* Setup API for Stream */
545 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
549 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
550 /* event notification (on) */
551 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
552 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
555 if (atomic_read(&itv->capturing) == 0) {
556 /* Clear all Pending Interrupts */
557 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
559 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
561 /* Initialize Digitizer for Capture */
562 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
564 ivtv_sleep_timeout(HZ / 10, 0);
568 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
570 IVTV_DEBUG_WARN( "Error starting capture!\n");
574 /* Start Passthrough */
575 if (enable_passthrough) {
576 ivtv_passthrough_mode(itv, 1);
579 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
580 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
582 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
584 /* you're live! sit back and await interrupts :) */
585 atomic_inc(&itv->capturing);
589 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
591 u32 data[CX2341X_MBOX_MAX_DATA];
592 struct ivtv *itv = s->itv;
595 if (s->v4l2dev == NULL)
598 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
600 /* disable VBI signals, if the MPEG stream contains VBI data,
601 then that data will be processed automatically for you. */
602 ivtv_disable_vbi(itv);
604 /* set audio mode to left/stereo for dual/stereo mode. */
605 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
607 /* set number of internal decoder buffers */
608 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
611 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
613 /* extract from user packets */
614 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
615 itv->vbi.dec_start = data[0];
617 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
618 itv->vbi.dec_start, data[1]);
620 /* set decoder source settings */
621 /* Data type: 0 = mpeg from host,
622 1 = yuv from encoder,
625 case IVTV_DEC_STREAM_TYPE_YUV:
626 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
627 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
629 case IVTV_DEC_STREAM_TYPE_MPG:
634 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
635 itv->params.width, itv->params.height, itv->params.audio_properties)) {
636 IVTV_DEBUG_WARN("COULDN'T INITIALIZE DECODER SOURCE\n");
641 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
643 struct ivtv *itv = s->itv;
645 if (s->v4l2dev == NULL)
648 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
649 return 0; /* already started */
651 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
653 /* Clear Streamoff */
654 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
655 /* Initialize Decoder */
656 /* Reprogram Decoder YUV Buffers for YUV */
657 write_reg(yuv_offset[0] >> 4, 0x82c);
658 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
659 write_reg(yuv_offset[0] >> 4, 0x834);
660 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
662 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
664 write_reg_sync(0x00108080, 0x2898);
665 /* Enable YUV decoder output */
666 write_reg_sync(0x01, IVTV_REG_VDM);
669 ivtv_setup_v4l2_decode_stream(s);
671 /* set dma size to 65536 bytes */
672 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
674 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
676 /* Zero out decoder counters */
677 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[0]);
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[1]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[2]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[3]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
686 /* turn on notification of dual/stereo mode change */
687 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
690 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
692 /* Clear the following Interrupt mask bits for decoding */
693 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
694 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
696 /* you're live! sit back and await interrupts :) */
697 atomic_inc(&itv->decoding);
701 void ivtv_stop_all_captures(struct ivtv *itv)
705 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
706 struct ivtv_stream *s = &itv->streams[i];
708 if (s->v4l2dev == NULL)
710 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
711 ivtv_stop_v4l2_encode_stream(s, 0);
716 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
718 struct ivtv *itv = s->itv;
719 DECLARE_WAITQUEUE(wait, current);
723 u32 data[CX2341X_MBOX_MAX_DATA];
725 if (s->v4l2dev == NULL)
728 /* This function assumes that you are allowed to stop the capture
729 and that we are actually capturing */
731 IVTV_DEBUG_INFO("Stop Capture\n");
733 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
735 if (atomic_read(&itv->capturing) == 0)
739 case IVTV_ENC_STREAM_TYPE_YUV:
742 case IVTV_ENC_STREAM_TYPE_PCM:
745 case IVTV_ENC_STREAM_TYPE_VBI:
748 case IVTV_ENC_STREAM_TYPE_MPG:
754 /* Stop Capture Mode */
755 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
762 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
763 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
765 /* only run these if we're shutting down the last cap */
766 if (atomic_read(&itv->capturing) - 1 == 0) {
767 /* event notification (off) */
768 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
769 /* type: 0 = refresh */
770 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
771 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
772 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
778 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
779 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
780 /* only run these if we're shutting down the last cap */
781 unsigned long duration;
784 add_wait_queue(&itv->cap_w, &wait);
786 set_current_state(TASK_INTERRUPTIBLE);
788 /* wait 2s for EOS interrupt */
789 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && jiffies < then + 2 * HZ) {
790 schedule_timeout(HZ / 100);
793 /* To convert jiffies to ms, we must multiply by 1000
794 * and divide by HZ. To avoid runtime division, we
795 * convert this to multiplication by 1000/HZ.
796 * Since integer division truncates, we get the best
797 * accuracy if we do a rounding calculation of the constant.
798 * Think of the case where HZ is 1024.
800 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
802 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
803 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
804 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
806 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
808 set_current_state(TASK_RUNNING);
809 remove_wait_queue(&itv->cap_w, &wait);
813 /* Make sure DMA is complete */
814 add_wait_queue(&s->waitq, &wait);
815 set_current_state(TASK_INTERRUPTIBLE);
817 /* check if DMA is pending */
818 if ((s->type == IVTV_ENC_STREAM_TYPE_MPG) && /* MPG Only */
819 (read_reg(IVTV_REG_DMASTATUS) & 0x02)) {
820 /* Check for last DMA */
821 ivtv_vapi_result(itv, data, CX2341X_ENC_GET_SEQ_END, 2, 0, 0);
824 IVTV_DEBUG_DMA("%s: Last DMA of size 0x%08x\n", s->name, data[1]);
827 } else if (read_reg(IVTV_REG_DMASTATUS) & 0x02) {
831 ivtv_sleep_timeout(HZ / 100, 1);
832 } while (then + HZ * 2 > jiffies);
834 set_current_state(TASK_RUNNING);
835 remove_wait_queue(&s->waitq, &wait);
838 atomic_dec(&itv->capturing);
840 /* Clear capture and no-read bits */
841 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
843 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
844 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
846 if (atomic_read(&itv->capturing) > 0) {
850 /* Set the following Interrupt mask bits for capture */
851 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
858 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
860 struct ivtv *itv = s->itv;
862 if (s->v4l2dev == NULL)
865 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
868 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
871 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
874 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
877 /* Wait until the decoder is no longer running */
879 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
880 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
883 u32 data[CX2341X_MBOX_MAX_DATA];
884 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
885 if (s->q_full.buffers + s->q_dma.buffers == 0) {
890 if (ivtv_sleep_timeout(HZ/10, 1))
894 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
896 /* turn off notification of dual/stereo mode change */
897 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
899 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
901 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
902 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
903 ivtv_flush_queues(s);
905 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
906 /* disable VBI on TV-out */
907 ivtv_disable_vbi(itv);
910 /* decrement decoding */
911 atomic_dec(&itv->decoding);
913 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
914 wake_up(&itv->event_waitq);
916 /* wake up wait queues */
922 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
924 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
925 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
927 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
930 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
932 /* Prevent others from starting/stopping streams while we
933 initiate/terminate passthrough mode */
935 if (itv->output_mode == OUT_PASSTHROUGH) {
938 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
941 /* Fully initialize stream, and then unflag init */
942 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
943 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
945 /* Setup YUV Decoder */
946 ivtv_setup_v4l2_decode_stream(dec_stream);
949 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
950 atomic_inc(&itv->decoding);
952 /* Setup capture if not already done */
953 if (atomic_read(&itv->capturing) == 0) {
954 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
957 /* Start Passthrough Mode */
958 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
959 atomic_inc(&itv->capturing);
963 if (itv->output_mode != OUT_PASSTHROUGH)
966 /* Stop Passthrough Mode */
967 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
968 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
970 atomic_dec(&itv->capturing);
971 atomic_dec(&itv->decoding);
972 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
973 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
974 itv->output_mode = OUT_NONE;