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 const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
48 .read = ivtv_v4l2_read,
49 .write = ivtv_v4l2_write,
50 .open = ivtv_v4l2_open,
51 .unlocked_ioctl = ivtv_v4l2_ioctl,
52 .release = ivtv_v4l2_close,
53 .poll = ivtv_v4l2_enc_poll,
56 static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
58 .read = ivtv_v4l2_read,
59 .write = ivtv_v4l2_write,
60 .open = ivtv_v4l2_open,
61 .unlocked_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 const struct v4l2_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 num_offset = ivtv_stream_info[type].num_offset;
173 int num = itv->instance + ivtv_first_minor + num_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 /* User explicitly selected 0 buffers for these streams, so don't
191 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
192 itv->options.kilobytes[type] == 0) {
193 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
197 ivtv_stream_init(itv, type);
199 /* allocate and initialize the v4l2 video device structure */
200 s->v4l2dev = video_device_alloc();
201 if (s->v4l2dev == NULL) {
202 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
206 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "%s %s",
207 itv->device.name, s->name);
209 s->v4l2dev->num = num;
210 s->v4l2dev->v4l2_dev = &itv->device;
211 s->v4l2dev->fops = ivtv_stream_info[type].fops;
212 s->v4l2dev->release = video_device_release;
213 s->v4l2dev->tvnorms = V4L2_STD_ALL;
214 ivtv_set_funcs(s->v4l2dev);
218 /* Initialize v4l2 variables and prepare v4l2 devices */
219 int ivtv_streams_setup(struct ivtv *itv)
223 /* Setup V4L2 Devices */
224 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
226 if (ivtv_prep_dev(itv, type))
229 if (itv->streams[type].v4l2dev == NULL)
232 /* Allocate Stream */
233 if (ivtv_stream_alloc(&itv->streams[type]))
236 if (type == IVTV_MAX_STREAMS)
239 /* One or more streams could not be initialized. Clean 'em all up. */
240 ivtv_streams_cleanup(itv, 0);
244 static int ivtv_reg_dev(struct ivtv *itv, int type)
246 struct ivtv_stream *s = &itv->streams[type];
247 int vfl_type = ivtv_stream_info[type].vfl_type;
250 if (s->v4l2dev == NULL)
253 num = s->v4l2dev->num;
254 /* card number + user defined offset + device offset */
255 if (type != IVTV_ENC_STREAM_TYPE_MPG) {
256 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
259 num = s_mpg->v4l2dev->num + ivtv_stream_info[type].num_offset;
261 video_set_drvdata(s->v4l2dev, s);
263 /* Register device. First try the desired minor, then any free one. */
264 if (video_register_device(s->v4l2dev, vfl_type, num)) {
265 IVTV_ERR("Couldn't register v4l2 device for %s kernel number %d\n",
267 video_device_release(s->v4l2dev);
271 num = s->v4l2dev->num;
274 case VFL_TYPE_GRABBER:
275 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
276 num, s->name, itv->options.kilobytes[type]);
279 IVTV_INFO("Registered device radio%d for %s\n",
283 if (itv->options.kilobytes[type])
284 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
285 num, s->name, itv->options.kilobytes[type]);
287 IVTV_INFO("Registered device vbi%d for %s\n",
294 /* Register v4l2 devices */
295 int ivtv_streams_register(struct ivtv *itv)
300 /* Register V4L2 devices */
301 for (type = 0; type < IVTV_MAX_STREAMS; type++)
302 err |= ivtv_reg_dev(itv, type);
307 /* One or more streams could not be initialized. Clean 'em all up. */
308 ivtv_streams_cleanup(itv, 1);
312 /* Unregister v4l2 devices */
313 void ivtv_streams_cleanup(struct ivtv *itv, int unregister)
317 /* Teardown all streams */
318 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
319 struct video_device *vdev = itv->streams[type].v4l2dev;
321 itv->streams[type].v4l2dev = NULL;
325 ivtv_stream_free(&itv->streams[type]);
326 /* Unregister or release device */
328 video_unregister_device(vdev);
330 video_device_release(vdev);
334 static void ivtv_vbi_setup(struct ivtv *itv)
336 int raw = ivtv_raw_vbi(itv);
337 u32 data[CX2341X_MBOX_MAX_DATA];
342 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
344 /* setup VBI registers */
345 v4l2_subdev_call(itv->sd_video, video, s_fmt, &itv->vbi.in);
347 /* determine number of lines and total number of VBI bytes.
348 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
349 The '- 1' byte is probably an unused U or V byte. Or something...
350 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
351 header, 42 data bytes + checksum (to be confirmed) */
353 lines = itv->vbi.count * 2;
355 lines = itv->is_60hz ? 24 : 38;
356 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
360 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
362 /* Note: sliced vs raw flag doesn't seem to have any effect
363 TODO: check mode (0x02) value with older ivtv versions. */
364 data[0] = raw | 0x02 | (0xbd << 8);
366 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
368 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
369 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
370 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
371 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
372 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
373 code. These values for raw VBI are obtained from a driver disassembly. The sliced
374 start/stop codes was deduced from this, but they do not appear in the driver.
375 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
376 However, I have no idea what these values are for. */
377 if (itv->hw_flags & IVTV_HW_CX25840) {
378 /* Setup VBI for the cx25840 digitizer */
380 data[3] = 0x20602060;
381 data[4] = 0x30703070;
383 data[3] = 0xB0F0B0F0;
384 data[4] = 0xA0E0A0E0;
386 /* Lines per frame */
389 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
391 /* Setup VBI for the saa7115 digitizer */
393 data[3] = 0x25256262;
394 data[4] = 0x387F7F7F;
396 data[3] = 0xABABECEC;
397 data[4] = 0xB6F1F1F1;
399 /* Lines per frame */
402 data[6] = itv->vbi.enc_size / lines;
406 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
407 data[0], data[1], data[2], data[5], data[6]);
409 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
411 /* returns the VBI encoder memory area. */
412 itv->vbi.enc_start = data[2];
413 itv->vbi.fpi = data[0];
417 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
418 itv->vbi.enc_start, data[1], itv->vbi.fpi);
421 Note that the sliced argument seems to have no effect. */
422 for (i = 2; i <= 24; i++) {
426 valid = i >= 10 && i < 22;
428 valid = i >= 6 && i < 24;
430 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
432 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
436 /* Remaining VBI questions:
437 - Is it possible to select particular VBI lines only for inclusion in the MPEG
438 stream? Currently you can only get the first X lines.
439 - Is mixed raw and sliced VBI possible?
440 - What's the meaning of the raw/sliced flag?
441 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
444 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
446 u32 data[CX2341X_MBOX_MAX_DATA];
447 struct ivtv *itv = s->itv;
448 struct cx2341x_mpeg_params *p = &itv->params;
449 int captype = 0, subtype = 0;
450 int enable_passthrough = 0;
452 if (s->v4l2dev == NULL)
455 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
458 case IVTV_ENC_STREAM_TYPE_MPG:
462 /* Stop Passthrough */
463 if (itv->output_mode == OUT_PASSTHROUGH) {
464 ivtv_passthrough_mode(itv, 0);
465 enable_passthrough = 1;
467 itv->mpg_data_received = itv->vbi_data_inserted = 0;
468 itv->dualwatch_jiffies = jiffies;
469 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
470 itv->search_pack_header = 0;
473 case IVTV_ENC_STREAM_TYPE_YUV:
474 if (itv->output_mode == OUT_PASSTHROUGH) {
476 subtype = 11; /* video+audio+decoder */
482 case IVTV_ENC_STREAM_TYPE_PCM:
486 case IVTV_ENC_STREAM_TYPE_VBI:
491 itv->vbi.inserted_frame = 0;
492 memset(itv->vbi.sliced_mpeg_size,
493 0, sizeof(itv->vbi.sliced_mpeg_size));
498 s->subtype = subtype;
499 s->buffers_stolen = 0;
501 /* Clear Streamoff flags in case left from last capture */
502 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
504 if (atomic_read(&itv->capturing) == 0) {
507 /* Always use frame based mode. Experiments have demonstrated that byte
508 stream based mode results in dropped frames and corruption. Not often,
509 but occasionally. Many thanks go to Leonard Orb who spent a lot of
510 effort and time trying to trace the cause of the drop outs. */
511 /* 1 frame per DMA */
512 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
513 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
515 /* Stuff from Windows, we don't know what it is */
516 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
517 /* According to the docs, this should be correct. However, this is
518 untested. I don't dare enable this without having tested it.
519 Only very few old cards actually have this hardware combination.
520 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
521 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
523 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
524 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
525 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
526 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
528 /* assign placeholder */
529 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
530 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
532 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
534 else if (itv->card->hw_all & IVTV_HW_SAA7114)
539 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
542 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
546 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
547 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
548 itv->pgm_info_offset = data[0];
549 itv->pgm_info_num = data[1];
550 itv->pgm_info_write_idx = 0;
551 itv->pgm_info_read_idx = 0;
553 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
554 itv->pgm_info_offset, itv->pgm_info_num);
556 /* Setup API for Stream */
557 cx2341x_update(itv, ivtv_api_func, NULL, p);
559 /* mute if capturing radio */
560 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
561 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
562 1 | (p->video_mute_yuv << 8));
566 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
567 /* event notification (on) */
568 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
569 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
572 if (atomic_read(&itv->capturing) == 0) {
573 /* Clear all Pending Interrupts */
574 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
576 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
578 /* Initialize Digitizer for Capture */
579 v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
580 ivtv_msleep_timeout(300, 1);
581 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
582 v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
586 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
588 IVTV_DEBUG_WARN( "Error starting capture!\n");
592 /* Start Passthrough */
593 if (enable_passthrough) {
594 ivtv_passthrough_mode(itv, 1);
597 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
598 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
600 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
602 /* you're live! sit back and await interrupts :) */
603 atomic_inc(&itv->capturing);
607 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
609 u32 data[CX2341X_MBOX_MAX_DATA];
610 struct ivtv *itv = s->itv;
611 struct cx2341x_mpeg_params *p = &itv->params;
614 if (s->v4l2dev == NULL)
617 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
619 /* set audio mode to left/stereo for dual/stereo mode. */
620 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
622 /* set number of internal decoder buffers */
623 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
626 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
628 /* extract from user packets */
629 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
630 itv->vbi.dec_start = data[0];
632 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
633 itv->vbi.dec_start, data[1]);
635 /* set decoder source settings */
636 /* Data type: 0 = mpeg from host,
637 1 = yuv from encoder,
640 case IVTV_DEC_STREAM_TYPE_YUV:
641 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
642 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
644 case IVTV_DEC_STREAM_TYPE_MPG:
649 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
650 p->width, p->height, p->audio_properties)) {
651 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
656 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
658 struct ivtv *itv = s->itv;
660 if (s->v4l2dev == NULL)
663 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
664 return 0; /* already started */
666 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
668 ivtv_setup_v4l2_decode_stream(s);
670 /* set dma size to 65536 bytes */
671 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
673 /* Clear Streamoff */
674 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
676 /* Zero out decoder counters */
677 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].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 if (s->v4l2dev == NULL)
726 /* This function assumes that you are allowed to stop the capture
727 and that we are actually capturing */
729 IVTV_DEBUG_INFO("Stop Capture\n");
731 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
733 if (atomic_read(&itv->capturing) == 0)
737 case IVTV_ENC_STREAM_TYPE_YUV:
740 case IVTV_ENC_STREAM_TYPE_PCM:
743 case IVTV_ENC_STREAM_TYPE_VBI:
746 case IVTV_ENC_STREAM_TYPE_MPG:
752 /* Stop Capture Mode */
753 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
760 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
761 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
763 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
764 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
765 /* only run these if we're shutting down the last cap */
766 unsigned long duration;
767 unsigned long then = jiffies;
769 add_wait_queue(&itv->eos_waitq, &wait);
771 set_current_state(TASK_INTERRUPTIBLE);
773 /* wait 2s for EOS interrupt */
774 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
776 then + msecs_to_jiffies(2000))) {
777 schedule_timeout(msecs_to_jiffies(10));
780 /* To convert jiffies to ms, we must multiply by 1000
781 * and divide by HZ. To avoid runtime division, we
782 * convert this to multiplication by 1000/HZ.
783 * Since integer division truncates, we get the best
784 * accuracy if we do a rounding calculation of the constant.
785 * Think of the case where HZ is 1024.
787 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
789 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
790 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
791 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
793 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
795 set_current_state(TASK_RUNNING);
796 remove_wait_queue(&itv->eos_waitq, &wait);
797 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
800 /* Handle any pending interrupts */
801 ivtv_msleep_timeout(100, 1);
804 atomic_dec(&itv->capturing);
806 /* Clear capture and no-read bits */
807 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
809 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
810 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
812 if (atomic_read(&itv->capturing) > 0) {
816 /* Set the following Interrupt mask bits for capture */
817 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
818 del_timer(&itv->dma_timer);
820 /* event notification (off) */
821 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
822 /* type: 0 = refresh */
823 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
824 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
825 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
833 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
835 struct ivtv *itv = s->itv;
837 if (s->v4l2dev == NULL)
840 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
843 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
846 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
849 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
852 /* Wait until the decoder is no longer running */
854 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
855 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
858 u32 data[CX2341X_MBOX_MAX_DATA];
859 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
860 if (s->q_full.buffers + s->q_dma.buffers == 0) {
865 if (ivtv_msleep_timeout(100, 1))
869 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
871 /* turn off notification of dual/stereo mode change */
872 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
874 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
875 del_timer(&itv->dma_timer);
877 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
878 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
879 ivtv_flush_queues(s);
881 /* decrement decoding */
882 atomic_dec(&itv->decoding);
884 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
885 wake_up(&itv->event_waitq);
887 /* wake up wait queues */
893 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
895 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
896 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
898 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
901 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
903 /* Prevent others from starting/stopping streams while we
904 initiate/terminate passthrough mode */
906 if (itv->output_mode == OUT_PASSTHROUGH) {
909 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
912 /* Fully initialize stream, and then unflag init */
913 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
914 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
916 /* Setup YUV Decoder */
917 ivtv_setup_v4l2_decode_stream(dec_stream);
920 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
921 atomic_inc(&itv->decoding);
923 /* Setup capture if not already done */
924 if (atomic_read(&itv->capturing) == 0) {
925 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
928 /* Start Passthrough Mode */
929 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
930 atomic_inc(&itv->capturing);
934 if (itv->output_mode != OUT_PASSTHROUGH)
937 /* Stop Passthrough Mode */
938 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
939 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
941 atomic_dec(&itv->capturing);
942 atomic_dec(&itv->decoding);
943 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
944 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
945 itv->output_mode = OUT_NONE;