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 file_operations ivtv_v4l2_enc_fops = {
48 .read = ivtv_v4l2_read,
49 .write = ivtv_v4l2_write,
50 .open = ivtv_v4l2_open,
51 .ioctl = ivtv_v4l2_ioctl,
52 .release = ivtv_v4l2_close,
53 .poll = ivtv_v4l2_enc_poll,
56 static const struct file_operations ivtv_v4l2_dec_fops = {
58 .read = ivtv_v4l2_read,
59 .write = ivtv_v4l2_write,
60 .open = ivtv_v4l2_open,
61 .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 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 minor_offset = ivtv_stream_info[type].minor_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 /* card number + user defined offset + device offset */
190 minor = itv->num + ivtv_first_minor + minor_offset;
192 /* User explicitly selected 0 buffers for these streams, so don't
194 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
195 itv->options.kilobytes[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;
225 /* Initialize v4l2 variables and prepare v4l2 devices */
226 int ivtv_streams_setup(struct ivtv *itv)
230 /* Setup V4L2 Devices */
231 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
233 if (ivtv_prep_dev(itv, type))
236 if (itv->streams[type].v4l2dev == NULL)
239 /* Allocate Stream */
240 if (ivtv_stream_alloc(&itv->streams[type]))
243 if (type == IVTV_MAX_STREAMS)
246 /* One or more streams could not be initialized. Clean 'em all up. */
247 ivtv_streams_cleanup(itv);
251 static int ivtv_reg_dev(struct ivtv *itv, int type)
253 struct ivtv_stream *s = &itv->streams[type];
254 int vfl_type = ivtv_stream_info[type].vfl_type;
257 if (s->v4l2dev == NULL)
260 minor = s->v4l2dev->minor;
261 /* Register device. First try the desired minor, then any free one. */
262 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
263 video_register_device(s->v4l2dev, vfl_type, -1)) {
264 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
266 video_device_release(s->v4l2dev);
272 case VFL_TYPE_GRABBER:
273 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
274 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
277 IVTV_INFO("Registered device radio%d for %s\n",
278 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
281 if (itv->options.kilobytes[type])
282 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
283 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
284 s->name, itv->options.kilobytes[type]);
286 IVTV_INFO("Registered device vbi%d for %s\n",
287 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
293 /* Register v4l2 devices */
294 int ivtv_streams_register(struct ivtv *itv)
299 /* Register V4L2 devices */
300 for (type = 0; type < IVTV_MAX_STREAMS; type++)
301 err |= ivtv_reg_dev(itv, type);
306 /* One or more streams could not be initialized. Clean 'em all up. */
307 ivtv_streams_cleanup(itv);
311 /* Unregister v4l2 devices */
312 void ivtv_streams_cleanup(struct ivtv *itv)
316 /* Teardown all streams */
317 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
318 struct video_device *vdev = itv->streams[type].v4l2dev;
320 itv->streams[type].v4l2dev = NULL;
324 ivtv_stream_free(&itv->streams[type]);
325 /* Unregister device */
326 video_unregister_device(vdev);
330 static void ivtv_vbi_setup(struct ivtv *itv)
332 int raw = itv->vbi.sliced_in->service_set == 0;
333 u32 data[CX2341X_MBOX_MAX_DATA];
338 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
340 /* setup VBI registers */
341 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
343 /* determine number of lines and total number of VBI bytes.
344 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
345 The '- 1' byte is probably an unused U or V byte. Or something...
346 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
347 header, 42 data bytes + checksum (to be confirmed) */
349 lines = itv->vbi.count * 2;
351 lines = itv->is_60hz ? 24 : 38;
352 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
356 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
358 /* Note: sliced vs raw flag doesn't seem to have any effect
359 TODO: check mode (0x02) value with older ivtv versions. */
360 data[0] = raw | 0x02 | (0xbd << 8);
362 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
364 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
365 data[2] = raw ? 4 : 8;
366 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
367 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
368 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
369 code. These values for raw VBI are obtained from a driver disassembly. The sliced
370 start/stop codes was deduced from this, but they do not appear in the driver.
371 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
372 However, I have no idea what these values are for. */
373 if (itv->hw_flags & IVTV_HW_CX25840) {
374 /* Setup VBI for the cx25840 digitizer */
376 data[3] = 0x20602060;
377 data[4] = 0x30703070;
379 data[3] = 0xB0F0B0F0;
380 data[4] = 0xA0E0A0E0;
382 /* Lines per frame */
385 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
387 /* Setup VBI for the saa7115 digitizer */
389 data[3] = 0x25256262;
390 data[4] = 0x387F7F7F;
392 data[3] = 0xABABECEC;
393 data[4] = 0xB6F1F1F1;
395 /* Lines per frame */
398 data[6] = itv->vbi.enc_size / lines;
402 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
403 data[0], data[1], data[2], data[5], data[6]);
405 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
407 /* returns the VBI encoder memory area. */
408 itv->vbi.enc_start = data[2];
409 itv->vbi.fpi = data[0];
413 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
414 itv->vbi.enc_start, data[1], itv->vbi.fpi);
417 Note that the sliced argument seems to have no effect. */
418 for (i = 2; i <= 24; i++) {
422 valid = i >= 10 && i < 22;
424 valid = i >= 6 && i < 24;
426 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
428 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
432 /* Remaining VBI questions:
433 - Is it possible to select particular VBI lines only for inclusion in the MPEG
434 stream? Currently you can only get the first X lines.
435 - Is mixed raw and sliced VBI possible?
436 - What's the meaning of the raw/sliced flag?
437 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
440 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
442 u32 data[CX2341X_MBOX_MAX_DATA];
443 struct ivtv *itv = s->itv;
444 struct cx2341x_mpeg_params *p = &itv->params;
445 int captype = 0, subtype = 0;
446 int enable_passthrough = 0;
448 if (s->v4l2dev == NULL)
451 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
454 case IVTV_ENC_STREAM_TYPE_MPG:
458 /* Stop Passthrough */
459 if (itv->output_mode == OUT_PASSTHROUGH) {
460 ivtv_passthrough_mode(itv, 0);
461 enable_passthrough = 1;
463 itv->mpg_data_received = itv->vbi_data_inserted = 0;
464 itv->dualwatch_jiffies = jiffies;
465 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
466 itv->search_pack_header = 0;
469 case IVTV_ENC_STREAM_TYPE_YUV:
470 if (itv->output_mode == OUT_PASSTHROUGH) {
472 subtype = 11; /* video+audio+decoder */
478 case IVTV_ENC_STREAM_TYPE_PCM:
482 case IVTV_ENC_STREAM_TYPE_VBI:
487 itv->vbi.inserted_frame = 0;
488 memset(itv->vbi.sliced_mpeg_size,
489 0, sizeof(itv->vbi.sliced_mpeg_size));
494 s->subtype = subtype;
495 s->buffers_stolen = 0;
497 /* Clear Streamoff flags in case left from last capture */
498 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
500 if (atomic_read(&itv->capturing) == 0) {
503 /* Always use frame based mode. Experiments have demonstrated that byte
504 stream based mode results in dropped frames and corruption. Not often,
505 but occasionally. Many thanks go to Leonard Orb who spent a lot of
506 effort and time trying to trace the cause of the drop outs. */
507 /* 1 frame per DMA */
508 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
509 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
511 /* Stuff from Windows, we don't know what it is */
512 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
513 /* According to the docs, this should be correct. However, this is
514 untested. I don't dare enable this without having tested it.
515 Only very few old cards actually have this hardware combination.
516 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
517 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
519 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
520 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
521 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
522 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
524 /* assign placeholder */
525 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
526 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
528 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
530 else if (itv->card->hw_all & IVTV_HW_SAA7114)
535 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
538 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
542 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
543 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
544 itv->pgm_info_offset = data[0];
545 itv->pgm_info_num = data[1];
546 itv->pgm_info_write_idx = 0;
547 itv->pgm_info_read_idx = 0;
549 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
550 itv->pgm_info_offset, itv->pgm_info_num);
552 /* Setup API for Stream */
553 cx2341x_update(itv, ivtv_api_func, NULL, p);
555 /* mute if capturing radio */
556 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
557 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
558 1 | (p->video_mute_yuv << 8));
562 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
563 /* event notification (on) */
564 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
565 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
568 if (atomic_read(&itv->capturing) == 0) {
569 /* Clear all Pending Interrupts */
570 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
572 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
574 /* Initialize Digitizer for Capture */
575 itv->video_dec_func(itv, VIDIOC_STREAMOFF, NULL);
576 ivtv_msleep_timeout(300, 1);
577 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
578 itv->video_dec_func(itv, VIDIOC_STREAMON, NULL);
582 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
584 IVTV_DEBUG_WARN( "Error starting capture!\n");
588 /* Start Passthrough */
589 if (enable_passthrough) {
590 ivtv_passthrough_mode(itv, 1);
593 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
594 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
596 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
598 /* you're live! sit back and await interrupts :) */
599 atomic_inc(&itv->capturing);
603 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
605 u32 data[CX2341X_MBOX_MAX_DATA];
606 struct ivtv *itv = s->itv;
607 struct cx2341x_mpeg_params *p = &itv->params;
610 if (s->v4l2dev == NULL)
613 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
615 /* set audio mode to left/stereo for dual/stereo mode. */
616 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
618 /* set number of internal decoder buffers */
619 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
622 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
624 /* extract from user packets */
625 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
626 itv->vbi.dec_start = data[0];
628 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
629 itv->vbi.dec_start, data[1]);
631 /* set decoder source settings */
632 /* Data type: 0 = mpeg from host,
633 1 = yuv from encoder,
636 case IVTV_DEC_STREAM_TYPE_YUV:
637 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
638 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
640 case IVTV_DEC_STREAM_TYPE_MPG:
645 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
646 p->width, p->height, p->audio_properties)) {
647 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
652 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
654 struct ivtv *itv = s->itv;
656 if (s->v4l2dev == NULL)
659 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
660 return 0; /* already started */
662 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
664 ivtv_setup_v4l2_decode_stream(s);
666 /* set dma size to 65536 bytes */
667 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
669 /* Clear Streamoff */
670 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
672 /* Zero out decoder counters */
673 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
674 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
675 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
676 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
677 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
682 /* turn on notification of dual/stereo mode change */
683 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
686 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
688 /* Clear the following Interrupt mask bits for decoding */
689 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
690 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
692 /* you're live! sit back and await interrupts :) */
693 atomic_inc(&itv->decoding);
697 void ivtv_stop_all_captures(struct ivtv *itv)
701 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
702 struct ivtv_stream *s = &itv->streams[i];
704 if (s->v4l2dev == NULL)
706 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
707 ivtv_stop_v4l2_encode_stream(s, 0);
712 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
714 struct ivtv *itv = s->itv;
715 DECLARE_WAITQUEUE(wait, current);
719 if (s->v4l2dev == NULL)
722 /* This function assumes that you are allowed to stop the capture
723 and that we are actually capturing */
725 IVTV_DEBUG_INFO("Stop Capture\n");
727 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
729 if (atomic_read(&itv->capturing) == 0)
733 case IVTV_ENC_STREAM_TYPE_YUV:
736 case IVTV_ENC_STREAM_TYPE_PCM:
739 case IVTV_ENC_STREAM_TYPE_VBI:
742 case IVTV_ENC_STREAM_TYPE_MPG:
748 /* Stop Capture Mode */
749 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
756 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
757 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
759 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
760 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
761 /* only run these if we're shutting down the last cap */
762 unsigned long duration;
763 unsigned long then = jiffies;
765 add_wait_queue(&itv->eos_waitq, &wait);
767 set_current_state(TASK_INTERRUPTIBLE);
769 /* wait 2s for EOS interrupt */
770 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
771 jiffies < then + msecs_to_jiffies (2000)) {
772 schedule_timeout(msecs_to_jiffies(10));
775 /* To convert jiffies to ms, we must multiply by 1000
776 * and divide by HZ. To avoid runtime division, we
777 * convert this to multiplication by 1000/HZ.
778 * Since integer division truncates, we get the best
779 * accuracy if we do a rounding calculation of the constant.
780 * Think of the case where HZ is 1024.
782 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
784 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
785 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
786 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
788 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
790 set_current_state(TASK_RUNNING);
791 remove_wait_queue(&itv->eos_waitq, &wait);
792 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
795 /* Handle any pending interrupts */
796 ivtv_msleep_timeout(100, 1);
799 atomic_dec(&itv->capturing);
801 /* Clear capture and no-read bits */
802 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
804 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
805 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
807 if (atomic_read(&itv->capturing) > 0) {
811 /* Set the following Interrupt mask bits for capture */
812 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
813 del_timer(&itv->dma_timer);
815 /* event notification (off) */
816 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
817 /* type: 0 = refresh */
818 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
819 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
820 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
828 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
830 struct ivtv *itv = s->itv;
832 if (s->v4l2dev == NULL)
835 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
838 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
841 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
844 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
847 /* Wait until the decoder is no longer running */
849 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
850 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
853 u32 data[CX2341X_MBOX_MAX_DATA];
854 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
855 if (s->q_full.buffers + s->q_dma.buffers == 0) {
860 if (ivtv_msleep_timeout(100, 1))
864 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
866 /* turn off notification of dual/stereo mode change */
867 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
869 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
870 del_timer(&itv->dma_timer);
872 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
873 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
874 ivtv_flush_queues(s);
876 /* decrement decoding */
877 atomic_dec(&itv->decoding);
879 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
880 wake_up(&itv->event_waitq);
882 /* wake up wait queues */
888 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
890 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
891 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
893 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
896 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
898 /* Prevent others from starting/stopping streams while we
899 initiate/terminate passthrough mode */
901 if (itv->output_mode == OUT_PASSTHROUGH) {
904 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
907 /* Fully initialize stream, and then unflag init */
908 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
909 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
911 /* Setup YUV Decoder */
912 ivtv_setup_v4l2_decode_stream(dec_stream);
915 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
916 atomic_inc(&itv->decoding);
918 /* Setup capture if not already done */
919 if (atomic_read(&itv->capturing) == 0) {
920 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
923 /* Start Passthrough Mode */
924 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
925 atomic_inc(&itv->capturing);
929 if (itv->output_mode != OUT_PASSTHROUGH)
932 /* Stop Passthrough Mode */
933 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
934 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
936 atomic_dec(&itv->capturing);
937 atomic_dec(&itv->decoding);
938 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
939 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
940 itv->output_mode = OUT_NONE;