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 /* Big serialization lock to ensure no two streams are started
450 simultaneously: that can give all sorts of weird results. */
451 mutex_lock(&itv->serialize_lock);
452 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
455 case IVTV_ENC_STREAM_TYPE_MPG:
459 /* Stop Passthrough */
460 if (itv->output_mode == OUT_PASSTHROUGH) {
461 ivtv_passthrough_mode(itv, 0);
462 enable_passthrough = 1;
464 itv->mpg_data_received = itv->vbi_data_inserted = 0;
465 itv->dualwatch_jiffies = jiffies;
466 itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300;
467 itv->search_pack_header = 0;
470 case IVTV_ENC_STREAM_TYPE_YUV:
471 if (itv->output_mode == OUT_PASSTHROUGH) {
473 subtype = 11; /* video+audio+decoder */
479 case IVTV_ENC_STREAM_TYPE_PCM:
483 case IVTV_ENC_STREAM_TYPE_VBI:
488 itv->vbi.inserted_frame = 0;
489 memset(itv->vbi.sliced_mpeg_size,
490 0, sizeof(itv->vbi.sliced_mpeg_size));
493 mutex_unlock(&itv->serialize_lock);
496 s->subtype = subtype;
497 s->buffers_stolen = 0;
499 /* mute/unmute video */
500 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 1 : 0);
502 /* Clear Streamoff flags in case left from last capture */
503 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
505 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 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, itv->digitizer, itv->digitizer);
534 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
538 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
539 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
540 itv->pgm_info_offset = data[0];
541 itv->pgm_info_num = data[1];
542 itv->pgm_info_write_idx = 0;
543 itv->pgm_info_read_idx = 0;
545 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
546 itv->pgm_info_offset, itv->pgm_info_num);
548 /* Setup API for Stream */
549 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
553 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
554 /* event notification (on) */
555 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
556 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
559 if (atomic_read(&itv->capturing) == 0) {
560 /* Clear all Pending Interrupts */
561 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
563 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
565 /* Initialize Digitizer for Capture */
566 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
568 ivtv_sleep_timeout(HZ / 10, 0);
572 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
574 IVTV_DEBUG_WARN( "Error starting capture!\n");
575 mutex_unlock(&itv->serialize_lock);
579 /* Start Passthrough */
580 if (enable_passthrough) {
581 ivtv_passthrough_mode(itv, 1);
584 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
585 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
587 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
589 /* you're live! sit back and await interrupts :) */
590 atomic_inc(&itv->capturing);
591 mutex_unlock(&itv->serialize_lock);
595 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
597 u32 data[CX2341X_MBOX_MAX_DATA];
598 struct ivtv *itv = s->itv;
601 if (s->v4l2dev == NULL)
604 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
606 /* disable VBI signals, if the MPEG stream contains VBI data,
607 then that data will be processed automatically for you. */
608 ivtv_disable_vbi(itv);
610 /* set audio mode to left/stereo for dual/stereo mode. */
611 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
613 /* set number of internal decoder buffers */
614 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
617 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
619 /* extract from user packets */
620 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
621 itv->vbi.dec_start = data[0];
623 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
624 itv->vbi.dec_start, data[1]);
626 /* set decoder source settings */
627 /* Data type: 0 = mpeg from host,
628 1 = yuv from encoder,
631 case IVTV_DEC_STREAM_TYPE_YUV:
632 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
633 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
635 case IVTV_DEC_STREAM_TYPE_MPG:
640 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
641 itv->params.width, itv->params.height, itv->params.audio_properties)) {
642 IVTV_DEBUG_WARN("COULDN'T INITIALIZE DECODER SOURCE\n");
647 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
649 struct ivtv *itv = s->itv;
651 if (s->v4l2dev == NULL)
654 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
655 return 0; /* already started */
657 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
659 /* Clear Streamoff */
660 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
661 /* Initialize Decoder */
662 /* Reprogram Decoder YUV Buffers for YUV */
663 write_reg(yuv_offset[0] >> 4, 0x82c);
664 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
665 write_reg(yuv_offset[0] >> 4, 0x834);
666 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
668 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
670 write_reg_sync(0x00108080, 0x2898);
671 /* Enable YUV decoder output */
672 write_reg_sync(0x01, IVTV_REG_VDM);
675 ivtv_setup_v4l2_decode_stream(s);
677 /* set dma size to 65536 bytes */
678 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
680 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
682 /* Zero out decoder counters */
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[0]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[1]);
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[2]);
686 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[3]);
687 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
688 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
689 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
690 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
692 /* turn on notification of dual/stereo mode change */
693 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
696 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
698 /* Clear the following Interrupt mask bits for decoding */
699 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
700 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
702 /* you're live! sit back and await interrupts :) */
703 atomic_inc(&itv->decoding);
707 void ivtv_stop_all_captures(struct ivtv *itv)
711 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
712 struct ivtv_stream *s = &itv->streams[i];
714 if (s->v4l2dev == NULL)
716 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
717 ivtv_stop_v4l2_encode_stream(s, 0);
722 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
724 struct ivtv *itv = s->itv;
725 DECLARE_WAITQUEUE(wait, current);
729 u32 data[CX2341X_MBOX_MAX_DATA];
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);
773 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
774 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
775 /* only run these if we're shutting down the last cap */
776 unsigned long duration;
779 add_wait_queue(&itv->cap_w, &wait);
781 set_current_state(TASK_INTERRUPTIBLE);
783 /* wait 2s for EOS interrupt */
784 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && jiffies < then + 2 * HZ) {
785 schedule_timeout(HZ / 100);
788 /* To convert jiffies to ms, we must multiply by 1000
789 * and divide by HZ. To avoid runtime division, we
790 * convert this to multiplication by 1000/HZ.
791 * Since integer division truncates, we get the best
792 * accuracy if we do a rounding calculation of the constant.
793 * Think of the case where HZ is 1024.
795 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
797 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
798 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
799 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
801 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
803 set_current_state(TASK_RUNNING);
804 remove_wait_queue(&itv->cap_w, &wait);
808 /* Make sure DMA is complete */
809 add_wait_queue(&s->waitq, &wait);
811 /* check if DMA is pending */
812 if ((s->type == IVTV_ENC_STREAM_TYPE_MPG) && /* MPG Only */
813 (read_reg(IVTV_REG_DMASTATUS) & 0x02)) {
814 /* Check for last DMA */
815 ivtv_vapi_result(itv, data, CX2341X_ENC_GET_SEQ_END, 2, 0, 0);
818 IVTV_DEBUG_DMA("%s: Last DMA of size 0x%08x\n", s->name, data[1]);
821 } else if (read_reg(IVTV_REG_DMASTATUS) & 0x02) {
824 } while (!ivtv_sleep_timeout(HZ / 100, 1) && then + HZ * 2 > jiffies);
826 set_current_state(TASK_RUNNING);
827 remove_wait_queue(&s->waitq, &wait);
830 atomic_dec(&itv->capturing);
832 /* Clear capture and no-read bits */
833 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
835 /* ensure these global cleanup actions are done only once */
836 mutex_lock(&itv->serialize_lock);
838 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
839 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
841 if (atomic_read(&itv->capturing) > 0) {
842 mutex_unlock(&itv->serialize_lock);
846 /* Set the following Interrupt mask bits for capture */
847 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
849 /* event notification (off) */
850 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
851 /* type: 0 = refresh */
852 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
853 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
854 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
858 mutex_unlock(&itv->serialize_lock);
863 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
865 struct ivtv *itv = s->itv;
867 if (s->v4l2dev == NULL)
870 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
873 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
876 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
879 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
882 /* Wait until the decoder is no longer running */
884 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
885 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
888 u32 data[CX2341X_MBOX_MAX_DATA];
889 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
890 if (s->q_full.buffers + s->q_dma.buffers == 0) {
895 if (ivtv_sleep_timeout(HZ/10, 1))
899 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
901 /* turn off notification of dual/stereo mode change */
902 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
904 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
906 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
907 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
908 ivtv_flush_queues(s);
910 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
911 /* disable VBI on TV-out */
912 ivtv_disable_vbi(itv);
915 /* decrement decoding */
916 atomic_dec(&itv->decoding);
918 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
919 wake_up(&itv->event_waitq);
921 /* wake up wait queues */
927 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
929 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
930 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
932 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
935 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
937 /* Prevent others from starting/stopping streams while we
938 initiate/terminate passthrough mode */
940 if (itv->output_mode == OUT_PASSTHROUGH) {
943 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
946 /* Fully initialize stream, and then unflag init */
947 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
948 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
950 /* Setup YUV Decoder */
951 ivtv_setup_v4l2_decode_stream(dec_stream);
954 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
955 atomic_inc(&itv->decoding);
957 /* Setup capture if not already done */
958 if (atomic_read(&itv->capturing) == 0) {
959 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
962 /* Start Passthrough Mode */
963 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
964 atomic_inc(&itv->capturing);
968 if (itv->output_mode != OUT_PASSTHROUGH)
971 /* Stop Passthrough Mode */
972 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
973 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
975 atomic_dec(&itv->capturing);
976 atomic_dec(&itv->decoding);
977 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
978 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
979 itv->output_mode = OUT_NONE;