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_msleep_timeout(100, 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 /* set audio mode to left/stereo for dual/stereo mode. */
607 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
609 /* set number of internal decoder buffers */
610 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
613 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
615 /* extract from user packets */
616 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
617 itv->vbi.dec_start = data[0];
619 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
620 itv->vbi.dec_start, data[1]);
622 /* set decoder source settings */
623 /* Data type: 0 = mpeg from host,
624 1 = yuv from encoder,
627 case IVTV_DEC_STREAM_TYPE_YUV:
628 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
629 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
631 case IVTV_DEC_STREAM_TYPE_MPG:
636 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
637 itv->params.width, itv->params.height, itv->params.audio_properties)) {
638 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
643 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
645 struct ivtv *itv = s->itv;
647 if (s->v4l2dev == NULL)
650 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
651 return 0; /* already started */
653 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
655 /* Clear Streamoff */
656 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
657 /* Initialize Decoder */
658 /* Reprogram Decoder YUV Buffers for YUV */
659 write_reg(yuv_offset[0] >> 4, 0x82c);
660 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
661 write_reg(yuv_offset[0] >> 4, 0x834);
662 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
664 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
666 write_reg_sync(0x00108080, 0x2898);
667 /* Enable YUV decoder output */
668 write_reg_sync(0x01, IVTV_REG_VDM);
671 ivtv_setup_v4l2_decode_stream(s);
673 /* set dma size to 65536 bytes */
674 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
676 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
678 /* Zero out decoder counters */
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[0]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[1]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[2]);
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[3]);
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
686 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
688 /* turn on notification of dual/stereo mode change */
689 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
692 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
694 /* Clear the following Interrupt mask bits for decoding */
695 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
696 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
698 /* you're live! sit back and await interrupts :) */
699 atomic_inc(&itv->decoding);
703 void ivtv_stop_all_captures(struct ivtv *itv)
707 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
708 struct ivtv_stream *s = &itv->streams[i];
710 if (s->v4l2dev == NULL)
712 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
713 ivtv_stop_v4l2_encode_stream(s, 0);
718 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
720 struct ivtv *itv = s->itv;
721 DECLARE_WAITQUEUE(wait, current);
725 u32 data[CX2341X_MBOX_MAX_DATA];
727 if (s->v4l2dev == NULL)
730 /* This function assumes that you are allowed to stop the capture
731 and that we are actually capturing */
733 IVTV_DEBUG_INFO("Stop Capture\n");
735 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
737 if (atomic_read(&itv->capturing) == 0)
741 case IVTV_ENC_STREAM_TYPE_YUV:
744 case IVTV_ENC_STREAM_TYPE_PCM:
747 case IVTV_ENC_STREAM_TYPE_VBI:
750 case IVTV_ENC_STREAM_TYPE_MPG:
756 /* Stop Capture Mode */
757 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
764 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
765 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
769 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
770 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
771 /* only run these if we're shutting down the last cap */
772 unsigned long duration;
775 add_wait_queue(&itv->cap_w, &wait);
777 set_current_state(TASK_INTERRUPTIBLE);
779 /* wait 2s for EOS interrupt */
780 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
781 jiffies < then + msecs_to_jiffies (2000)) {
782 schedule_timeout(msecs_to_jiffies(10));
785 /* To convert jiffies to ms, we must multiply by 1000
786 * and divide by HZ. To avoid runtime division, we
787 * convert this to multiplication by 1000/HZ.
788 * Since integer division truncates, we get the best
789 * accuracy if we do a rounding calculation of the constant.
790 * Think of the case where HZ is 1024.
792 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
794 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
795 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
796 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
798 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
800 set_current_state(TASK_RUNNING);
801 remove_wait_queue(&itv->cap_w, &wait);
805 /* Make sure DMA is complete */
806 add_wait_queue(&s->waitq, &wait);
808 /* check if DMA is pending */
809 if ((s->type == IVTV_ENC_STREAM_TYPE_MPG) && /* MPG Only */
810 (read_reg(IVTV_REG_DMASTATUS) & 0x02)) {
811 /* Check for last DMA */
812 ivtv_vapi_result(itv, data, CX2341X_ENC_GET_SEQ_END, 2, 0, 0);
815 IVTV_DEBUG_DMA("%s: Last DMA of size 0x%08x\n", s->name, data[1]);
818 } else if (read_reg(IVTV_REG_DMASTATUS) & 0x02) {
821 } while (!ivtv_msleep_timeout(10, 1) &&
822 then + msecs_to_jiffies(2000) > jiffies);
824 set_current_state(TASK_RUNNING);
825 remove_wait_queue(&s->waitq, &wait);
828 atomic_dec(&itv->capturing);
830 /* Clear capture and no-read bits */
831 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
833 /* ensure these global cleanup actions are done only once */
834 mutex_lock(&itv->serialize_lock);
836 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
837 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
839 if (atomic_read(&itv->capturing) > 0) {
840 mutex_unlock(&itv->serialize_lock);
844 /* Set the following Interrupt mask bits for capture */
845 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
847 /* event notification (off) */
848 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
849 /* type: 0 = refresh */
850 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
851 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
852 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
856 mutex_unlock(&itv->serialize_lock);
861 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
863 struct ivtv *itv = s->itv;
865 if (s->v4l2dev == NULL)
868 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
871 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
874 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
877 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
880 /* Wait until the decoder is no longer running */
882 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
883 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
886 u32 data[CX2341X_MBOX_MAX_DATA];
887 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
888 if (s->q_full.buffers + s->q_dma.buffers == 0) {
893 if (ivtv_msleep_timeout(100, 1))
897 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
899 /* turn off notification of dual/stereo mode change */
900 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
902 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
904 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
905 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
906 ivtv_flush_queues(s);
908 /* decrement decoding */
909 atomic_dec(&itv->decoding);
911 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
912 wake_up(&itv->event_waitq);
914 /* wake up wait queues */
920 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
922 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
923 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
925 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
928 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
930 /* Prevent others from starting/stopping streams while we
931 initiate/terminate passthrough mode */
933 if (itv->output_mode == OUT_PASSTHROUGH) {
936 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
939 /* Fully initialize stream, and then unflag init */
940 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
941 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
943 /* Setup YUV Decoder */
944 ivtv_setup_v4l2_decode_stream(dec_stream);
947 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
948 atomic_inc(&itv->decoding);
950 /* Setup capture if not already done */
951 if (atomic_read(&itv->capturing) == 0) {
952 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
955 /* Start Passthrough Mode */
956 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
957 atomic_inc(&itv->capturing);
961 if (itv->output_mode != OUT_PASSTHROUGH)
964 /* Stop Passthrough Mode */
965 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
966 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
968 atomic_dec(&itv->capturing);
969 atomic_dec(&itv->decoding);
970 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
971 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
972 itv->output_mode = OUT_NONE;