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"
45 #include <media/v4l2-event.h>
47 static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
49 .read = ivtv_v4l2_read,
50 .write = ivtv_v4l2_write,
51 .open = ivtv_v4l2_open,
52 .unlocked_ioctl = ivtv_v4l2_ioctl,
53 .release = ivtv_v4l2_close,
54 .poll = ivtv_v4l2_enc_poll,
57 static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
59 .read = ivtv_v4l2_read,
60 .write = ivtv_v4l2_write,
61 .open = ivtv_v4l2_open,
62 .unlocked_ioctl = ivtv_v4l2_ioctl,
63 .release = ivtv_v4l2_close,
64 .poll = ivtv_v4l2_dec_poll,
67 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
68 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
69 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
70 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
71 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
72 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
79 enum v4l2_buf_type buf_type;
80 const struct v4l2_file_operations *fops;
81 } ivtv_stream_info[] = {
82 { /* IVTV_ENC_STREAM_TYPE_MPG */
85 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
88 { /* IVTV_ENC_STREAM_TYPE_YUV */
90 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
91 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
94 { /* IVTV_ENC_STREAM_TYPE_VBI */
97 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
100 { /* IVTV_ENC_STREAM_TYPE_PCM */
102 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
103 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
106 { /* IVTV_ENC_STREAM_TYPE_RAD */
109 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
112 { /* IVTV_DEC_STREAM_TYPE_MPG */
114 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
115 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
118 { /* IVTV_DEC_STREAM_TYPE_VBI */
120 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
121 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
124 { /* IVTV_DEC_STREAM_TYPE_VOUT */
126 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
127 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
130 { /* IVTV_DEC_STREAM_TYPE_YUV */
132 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
133 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
138 static void ivtv_stream_init(struct ivtv *itv, int type)
140 struct ivtv_stream *s = &itv->streams[type];
141 struct video_device *vdev = s->vdev;
143 /* we need to keep vdev, so restore it afterwards */
144 memset(s, 0, sizeof(*s));
147 /* initialize ivtv_stream fields */
150 s->name = ivtv_stream_info[type].name;
152 if (ivtv_stream_info[type].pio)
153 s->dma = PCI_DMA_NONE;
155 s->dma = ivtv_stream_info[type].dma;
156 s->buf_size = itv->stream_buf_size[type];
158 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
159 spin_lock_init(&s->qlock);
160 init_waitqueue_head(&s->waitq);
162 s->sg_handle = IVTV_DMA_UNMAPPED;
163 ivtv_queue_init(&s->q_free);
164 ivtv_queue_init(&s->q_full);
165 ivtv_queue_init(&s->q_dma);
166 ivtv_queue_init(&s->q_predma);
167 ivtv_queue_init(&s->q_io);
170 static int ivtv_prep_dev(struct ivtv *itv, int type)
172 struct ivtv_stream *s = &itv->streams[type];
173 int num_offset = ivtv_stream_info[type].num_offset;
174 int num = itv->instance + ivtv_first_minor + num_offset;
176 /* These four fields are always initialized. If vdev == NULL, then
177 this stream is not in use. In that case no other fields but these
182 s->name = ivtv_stream_info[type].name;
184 /* Check whether the radio is supported */
185 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
187 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
190 /* User explicitly selected 0 buffers for these streams, so don't
192 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
193 itv->options.kilobytes[type] == 0) {
194 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
198 ivtv_stream_init(itv, type);
200 /* allocate and initialize the v4l2 video device structure */
201 s->vdev = video_device_alloc();
202 if (s->vdev == NULL) {
203 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
207 snprintf(s->vdev->name, sizeof(s->vdev->name), "%s %s",
208 itv->v4l2_dev.name, s->name);
211 s->vdev->v4l2_dev = &itv->v4l2_dev;
212 s->vdev->fops = ivtv_stream_info[type].fops;
213 s->vdev->release = video_device_release;
214 s->vdev->tvnorms = V4L2_STD_ALL;
215 ivtv_set_funcs(s->vdev);
219 /* Initialize v4l2 variables and prepare v4l2 devices */
220 int ivtv_streams_setup(struct ivtv *itv)
224 /* Setup V4L2 Devices */
225 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
227 if (ivtv_prep_dev(itv, type))
230 if (itv->streams[type].vdev == NULL)
233 /* Allocate Stream */
234 if (ivtv_stream_alloc(&itv->streams[type]))
237 if (type == IVTV_MAX_STREAMS)
240 /* One or more streams could not be initialized. Clean 'em all up. */
241 ivtv_streams_cleanup(itv, 0);
245 static int ivtv_reg_dev(struct ivtv *itv, int type)
247 struct ivtv_stream *s = &itv->streams[type];
248 int vfl_type = ivtv_stream_info[type].vfl_type;
256 /* card number + user defined offset + device offset */
257 if (type != IVTV_ENC_STREAM_TYPE_MPG) {
258 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
261 num = s_mpg->vdev->num + ivtv_stream_info[type].num_offset;
263 video_set_drvdata(s->vdev, s);
265 /* Register device. First try the desired minor, then any free one. */
266 if (video_register_device_no_warn(s->vdev, vfl_type, num)) {
267 IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
269 video_device_release(s->vdev);
273 name = video_device_node_name(s->vdev);
276 case VFL_TYPE_GRABBER:
277 IVTV_INFO("Registered device %s for %s (%d kB)\n",
278 name, s->name, itv->options.kilobytes[type]);
281 IVTV_INFO("Registered device %s for %s\n",
285 if (itv->options.kilobytes[type])
286 IVTV_INFO("Registered device %s for %s (%d kB)\n",
287 name, s->name, itv->options.kilobytes[type]);
289 IVTV_INFO("Registered device %s for %s\n",
296 /* Register v4l2 devices */
297 int ivtv_streams_register(struct ivtv *itv)
302 /* Register V4L2 devices */
303 for (type = 0; type < IVTV_MAX_STREAMS; type++)
304 err |= ivtv_reg_dev(itv, type);
309 /* One or more streams could not be initialized. Clean 'em all up. */
310 ivtv_streams_cleanup(itv, 1);
314 /* Unregister v4l2 devices */
315 void ivtv_streams_cleanup(struct ivtv *itv, int unregister)
319 /* Teardown all streams */
320 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
321 struct video_device *vdev = itv->streams[type].vdev;
323 itv->streams[type].vdev = NULL;
327 ivtv_stream_free(&itv->streams[type]);
328 /* Unregister or release device */
330 video_unregister_device(vdev);
332 video_device_release(vdev);
336 static void ivtv_vbi_setup(struct ivtv *itv)
338 int raw = ivtv_raw_vbi(itv);
339 u32 data[CX2341X_MBOX_MAX_DATA];
344 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
346 /* setup VBI registers */
348 v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi);
350 v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced);
352 /* determine number of lines and total number of VBI bytes.
353 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
354 The '- 1' byte is probably an unused U or V byte. Or something...
355 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
356 header, 42 data bytes + checksum (to be confirmed) */
358 lines = itv->vbi.count * 2;
360 lines = itv->is_60hz ? 24 : 38;
361 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
365 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
367 /* Note: sliced vs raw flag doesn't seem to have any effect
368 TODO: check mode (0x02) value with older ivtv versions. */
369 data[0] = raw | 0x02 | (0xbd << 8);
371 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
373 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
374 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
375 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
376 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
377 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
378 code. These values for raw VBI are obtained from a driver disassembly. The sliced
379 start/stop codes was deduced from this, but they do not appear in the driver.
380 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
381 However, I have no idea what these values are for. */
382 if (itv->hw_flags & IVTV_HW_CX25840) {
383 /* Setup VBI for the cx25840 digitizer */
385 data[3] = 0x20602060;
386 data[4] = 0x30703070;
388 data[3] = 0xB0F0B0F0;
389 data[4] = 0xA0E0A0E0;
391 /* Lines per frame */
394 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
396 /* Setup VBI for the saa7115 digitizer */
398 data[3] = 0x25256262;
399 data[4] = 0x387F7F7F;
401 data[3] = 0xABABECEC;
402 data[4] = 0xB6F1F1F1;
404 /* Lines per frame */
407 data[6] = itv->vbi.enc_size / lines;
411 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
412 data[0], data[1], data[2], data[5], data[6]);
414 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
416 /* returns the VBI encoder memory area. */
417 itv->vbi.enc_start = data[2];
418 itv->vbi.fpi = data[0];
422 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
423 itv->vbi.enc_start, data[1], itv->vbi.fpi);
426 Note that the sliced argument seems to have no effect. */
427 for (i = 2; i <= 24; i++) {
431 valid = i >= 10 && i < 22;
433 valid = i >= 6 && i < 24;
435 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
437 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
441 /* Remaining VBI questions:
442 - Is it possible to select particular VBI lines only for inclusion in the MPEG
443 stream? Currently you can only get the first X lines.
444 - Is mixed raw and sliced VBI possible?
445 - What's the meaning of the raw/sliced flag?
446 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
449 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
451 u32 data[CX2341X_MBOX_MAX_DATA];
452 struct ivtv *itv = s->itv;
453 struct cx2341x_mpeg_params *p = &itv->params;
454 int captype = 0, subtype = 0;
455 int enable_passthrough = 0;
460 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
463 case IVTV_ENC_STREAM_TYPE_MPG:
467 /* Stop Passthrough */
468 if (itv->output_mode == OUT_PASSTHROUGH) {
469 ivtv_passthrough_mode(itv, 0);
470 enable_passthrough = 1;
472 itv->mpg_data_received = itv->vbi_data_inserted = 0;
473 itv->dualwatch_jiffies = jiffies;
474 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
475 itv->search_pack_header = 0;
478 case IVTV_ENC_STREAM_TYPE_YUV:
479 if (itv->output_mode == OUT_PASSTHROUGH) {
481 subtype = 11; /* video+audio+decoder */
487 case IVTV_ENC_STREAM_TYPE_PCM:
491 case IVTV_ENC_STREAM_TYPE_VBI:
496 itv->vbi.inserted_frame = 0;
497 memset(itv->vbi.sliced_mpeg_size,
498 0, sizeof(itv->vbi.sliced_mpeg_size));
503 s->subtype = subtype;
504 s->buffers_stolen = 0;
506 /* Clear Streamoff flags in case left from last capture */
507 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
509 if (atomic_read(&itv->capturing) == 0) {
512 /* Always use frame based mode. Experiments have demonstrated that byte
513 stream based mode results in dropped frames and corruption. Not often,
514 but occasionally. Many thanks go to Leonard Orb who spent a lot of
515 effort and time trying to trace the cause of the drop outs. */
516 /* 1 frame per DMA */
517 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
518 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
520 /* Stuff from Windows, we don't know what it is */
521 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
522 /* According to the docs, this should be correct. However, this is
523 untested. I don't dare enable this without having tested it.
524 Only very few old cards actually have this hardware combination.
525 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
526 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
528 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
529 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
530 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
531 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
533 /* assign placeholder */
534 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
535 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
537 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
539 else if (itv->card->hw_all & IVTV_HW_SAA7114)
544 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
547 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
551 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
552 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
553 itv->pgm_info_offset = data[0];
554 itv->pgm_info_num = data[1];
555 itv->pgm_info_write_idx = 0;
556 itv->pgm_info_read_idx = 0;
558 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
559 itv->pgm_info_offset, itv->pgm_info_num);
561 /* Setup API for Stream */
562 cx2341x_update(itv, ivtv_api_func, NULL, p);
564 /* mute if capturing radio */
565 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
566 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
567 1 | (p->video_mute_yuv << 8));
571 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
572 /* event notification (on) */
573 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
574 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
577 if (atomic_read(&itv->capturing) == 0) {
578 /* Clear all Pending Interrupts */
579 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
581 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
583 /* Initialize Digitizer for Capture */
584 /* Avoid tinny audio problem - ensure audio clocks are going */
585 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
586 /* Avoid unpredictable PCI bus hang - disable video clocks */
587 v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
588 ivtv_msleep_timeout(300, 1);
589 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
590 v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
594 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
596 IVTV_DEBUG_WARN( "Error starting capture!\n");
600 /* Start Passthrough */
601 if (enable_passthrough) {
602 ivtv_passthrough_mode(itv, 1);
605 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
606 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
608 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
610 /* you're live! sit back and await interrupts :) */
611 atomic_inc(&itv->capturing);
615 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
617 u32 data[CX2341X_MBOX_MAX_DATA];
618 struct ivtv *itv = s->itv;
619 struct cx2341x_mpeg_params *p = &itv->params;
627 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
632 /* set audio mode to left/stereo for dual/stereo mode. */
633 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
635 /* set number of internal decoder buffers */
636 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
639 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
641 /* extract from user packets */
642 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
643 itv->vbi.dec_start = data[0];
645 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
646 itv->vbi.dec_start, data[1]);
648 /* set decoder source settings */
649 /* Data type: 0 = mpeg from host,
650 1 = yuv from encoder,
653 case IVTV_DEC_STREAM_TYPE_YUV:
654 if (itv->output_mode == OUT_PASSTHROUGH) {
657 /* Fake size to avoid switching video standard */
660 height = itv->is_out_50hz ? 576 : 480;
662 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
664 case IVTV_DEC_STREAM_TYPE_MPG:
669 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
670 width, height, p->audio_properties)) {
671 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
674 /* Decoder sometimes dies here, so wait a moment */
675 ivtv_msleep_timeout(10, 0);
680 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
682 struct ivtv *itv = s->itv;
687 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
688 return 0; /* already started */
690 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
692 ivtv_setup_v4l2_decode_stream(s);
694 /* set dma size to 65536 bytes */
695 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
697 /* Clear Streamoff */
698 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
700 /* Zero out decoder counters */
701 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
702 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
703 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
704 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
705 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
706 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
707 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
708 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
710 /* turn on notification of dual/stereo mode change */
711 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
714 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
716 /* Let things settle before we actually start */
717 ivtv_msleep_timeout(10, 0);
719 /* Clear the following Interrupt mask bits for decoding */
720 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
721 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
723 /* you're live! sit back and await interrupts :) */
724 atomic_inc(&itv->decoding);
728 void ivtv_stop_all_captures(struct ivtv *itv)
732 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
733 struct ivtv_stream *s = &itv->streams[i];
737 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
738 ivtv_stop_v4l2_encode_stream(s, 0);
743 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
745 struct ivtv *itv = s->itv;
746 DECLARE_WAITQUEUE(wait, current);
753 /* This function assumes that you are allowed to stop the capture
754 and that we are actually capturing */
756 IVTV_DEBUG_INFO("Stop Capture\n");
758 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
760 if (atomic_read(&itv->capturing) == 0)
764 case IVTV_ENC_STREAM_TYPE_YUV:
767 case IVTV_ENC_STREAM_TYPE_PCM:
770 case IVTV_ENC_STREAM_TYPE_VBI:
773 case IVTV_ENC_STREAM_TYPE_MPG:
779 /* Stop Capture Mode */
780 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
787 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
788 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
790 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
791 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
792 /* only run these if we're shutting down the last cap */
793 unsigned long duration;
794 unsigned long then = jiffies;
796 add_wait_queue(&itv->eos_waitq, &wait);
798 set_current_state(TASK_INTERRUPTIBLE);
800 /* wait 2s for EOS interrupt */
801 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
803 then + msecs_to_jiffies(2000))) {
804 schedule_timeout(msecs_to_jiffies(10));
807 /* To convert jiffies to ms, we must multiply by 1000
808 * and divide by HZ. To avoid runtime division, we
809 * convert this to multiplication by 1000/HZ.
810 * Since integer division truncates, we get the best
811 * accuracy if we do a rounding calculation of the constant.
812 * Think of the case where HZ is 1024.
814 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
816 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
817 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
818 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
820 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
822 set_current_state(TASK_RUNNING);
823 remove_wait_queue(&itv->eos_waitq, &wait);
824 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
827 /* Handle any pending interrupts */
828 ivtv_msleep_timeout(100, 1);
831 atomic_dec(&itv->capturing);
833 /* Clear capture and no-read bits */
834 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
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) {
843 /* Set the following Interrupt mask bits for capture */
844 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
845 del_timer(&itv->dma_timer);
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);
855 /* Raw-passthrough is implied on start. Make sure it's stopped so
856 the encoder will re-initialize when next started */
857 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
864 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
866 static const struct v4l2_event ev = {
867 .type = V4L2_EVENT_EOS,
869 struct ivtv *itv = s->itv;
874 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
877 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
880 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
883 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
886 /* Wait until the decoder is no longer running */
888 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
889 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
892 u32 data[CX2341X_MBOX_MAX_DATA];
893 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
894 if (s->q_full.buffers + s->q_dma.buffers == 0) {
899 if (ivtv_msleep_timeout(100, 1))
903 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
905 /* turn off notification of dual/stereo mode change */
906 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
908 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
909 del_timer(&itv->dma_timer);
911 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
912 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
913 ivtv_flush_queues(s);
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);
920 v4l2_event_queue(s->vdev, &ev);
922 /* wake up wait queues */
928 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
930 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
931 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
933 if (yuv_stream->vdev == NULL || dec_stream->vdev == NULL)
936 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
938 /* Prevent others from starting/stopping streams while we
939 initiate/terminate passthrough mode */
941 if (itv->output_mode == OUT_PASSTHROUGH) {
944 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
947 /* Fully initialize stream, and then unflag init */
948 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
949 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
951 /* Setup YUV Decoder */
952 ivtv_setup_v4l2_decode_stream(dec_stream);
955 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
956 atomic_inc(&itv->decoding);
958 /* Setup capture if not already done */
959 if (atomic_read(&itv->capturing) == 0) {
960 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
963 /* Start Passthrough Mode */
964 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
965 atomic_inc(&itv->capturing);
969 if (itv->output_mode != OUT_PASSTHROUGH)
972 /* Stop Passthrough Mode */
973 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
974 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
976 atomic_dec(&itv->capturing);
977 atomic_dec(&itv->decoding);
978 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
979 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
980 itv->output_mode = OUT_NONE;