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 .compat_ioctl = v4l_compat_ioctl32,
53 .release = ivtv_v4l2_close,
54 .poll = ivtv_v4l2_enc_poll,
57 static const struct file_operations ivtv_v4l2_dec_fops = {
59 .read = ivtv_v4l2_read,
60 .write = ivtv_v4l2_write,
61 .open = ivtv_v4l2_open,
62 .ioctl = ivtv_v4l2_ioctl,
63 .compat_ioctl = v4l_compat_ioctl32,
64 .release = ivtv_v4l2_close,
65 .poll = ivtv_v4l2_dec_poll,
68 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
69 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
70 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
71 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
72 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
73 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
80 enum v4l2_buf_type buf_type;
81 const struct file_operations *fops;
82 } ivtv_stream_info[] = {
83 { /* IVTV_ENC_STREAM_TYPE_MPG */
86 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
89 { /* IVTV_ENC_STREAM_TYPE_YUV */
91 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
92 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
95 { /* IVTV_ENC_STREAM_TYPE_VBI */
98 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
101 { /* IVTV_ENC_STREAM_TYPE_PCM */
103 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
104 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
107 { /* IVTV_ENC_STREAM_TYPE_RAD */
110 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
113 { /* IVTV_DEC_STREAM_TYPE_MPG */
115 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
116 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
119 { /* IVTV_DEC_STREAM_TYPE_VBI */
121 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
122 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
125 { /* IVTV_DEC_STREAM_TYPE_VOUT */
127 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
128 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
131 { /* IVTV_DEC_STREAM_TYPE_YUV */
133 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
134 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
139 static void ivtv_stream_init(struct ivtv *itv, int type)
141 struct ivtv_stream *s = &itv->streams[type];
142 struct video_device *dev = s->v4l2dev;
144 /* we need to keep v4l2dev, so restore it afterwards */
145 memset(s, 0, sizeof(*s));
148 /* initialize ivtv_stream fields */
151 s->name = ivtv_stream_info[type].name;
153 if (ivtv_stream_info[type].pio)
154 s->dma = PCI_DMA_NONE;
156 s->dma = ivtv_stream_info[type].dma;
157 s->buf_size = itv->stream_buf_size[type];
159 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
160 spin_lock_init(&s->qlock);
161 init_waitqueue_head(&s->waitq);
163 s->sg_handle = IVTV_DMA_UNMAPPED;
164 ivtv_queue_init(&s->q_free);
165 ivtv_queue_init(&s->q_full);
166 ivtv_queue_init(&s->q_dma);
167 ivtv_queue_init(&s->q_predma);
168 ivtv_queue_init(&s->q_io);
171 static int ivtv_prep_dev(struct ivtv *itv, int type)
173 struct ivtv_stream *s = &itv->streams[type];
174 int minor_offset = ivtv_stream_info[type].minor_offset;
177 /* These four fields are always initialized. If v4l2dev == NULL, then
178 this stream is not in use. In that case no other fields but these
183 s->name = ivtv_stream_info[type].name;
185 /* Check whether the radio is supported */
186 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
188 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
191 /* card number + user defined offset + device offset */
192 minor = itv->num + ivtv_first_minor + minor_offset;
194 /* User explicitly selected 0 buffers for these streams, so don't
196 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
197 itv->options.kilobytes[type] == 0) {
198 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
202 ivtv_stream_init(itv, type);
204 /* allocate and initialize the v4l2 video device structure */
205 s->v4l2dev = video_device_alloc();
206 if (s->v4l2dev == NULL) {
207 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
211 s->v4l2dev->type = VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT |
212 VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER;
213 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
214 s->v4l2dev->type |= VID_TYPE_MPEG_DECODER;
216 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
219 s->v4l2dev->minor = minor;
220 s->v4l2dev->dev = &itv->dev->dev;
221 s->v4l2dev->fops = ivtv_stream_info[type].fops;
222 s->v4l2dev->release = video_device_release;
223 s->v4l2dev->tvnorms = V4L2_STD_ALL;
224 ivtv_set_funcs(s->v4l2dev);
228 /* Initialize v4l2 variables and prepare v4l2 devices */
229 int ivtv_streams_setup(struct ivtv *itv)
233 /* Setup V4L2 Devices */
234 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
236 if (ivtv_prep_dev(itv, type))
239 if (itv->streams[type].v4l2dev == NULL)
242 /* Allocate Stream */
243 if (ivtv_stream_alloc(&itv->streams[type]))
246 if (type == IVTV_MAX_STREAMS)
249 /* One or more streams could not be initialized. Clean 'em all up. */
250 ivtv_streams_cleanup(itv, 0);
254 static int ivtv_reg_dev(struct ivtv *itv, int type)
256 struct ivtv_stream *s = &itv->streams[type];
257 int vfl_type = ivtv_stream_info[type].vfl_type;
260 if (s->v4l2dev == NULL)
263 minor = s->v4l2dev->minor;
264 /* Register device. First try the desired minor, then any free one. */
265 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
266 video_register_device(s->v4l2dev, vfl_type, -1)) {
267 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
269 video_device_release(s->v4l2dev);
275 case VFL_TYPE_GRABBER:
276 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
277 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
280 IVTV_INFO("Registered device radio%d for %s\n",
281 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
284 if (itv->options.kilobytes[type])
285 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
286 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
287 s->name, itv->options.kilobytes[type]);
289 IVTV_INFO("Registered device vbi%d for %s\n",
290 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
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].v4l2dev;
323 itv->streams[type].v4l2dev = 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 = itv->vbi.sliced_in->service_set == 0;
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 */
347 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
349 /* determine number of lines and total number of VBI bytes.
350 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
351 The '- 1' byte is probably an unused U or V byte. Or something...
352 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
353 header, 42 data bytes + checksum (to be confirmed) */
355 lines = itv->vbi.count * 2;
357 lines = itv->is_60hz ? 24 : 38;
358 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
362 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
364 /* Note: sliced vs raw flag doesn't seem to have any effect
365 TODO: check mode (0x02) value with older ivtv versions. */
366 data[0] = raw | 0x02 | (0xbd << 8);
368 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
370 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
371 data[2] = raw ? 4 : 8;
372 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
373 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
374 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
375 code. These values for raw VBI are obtained from a driver disassembly. The sliced
376 start/stop codes was deduced from this, but they do not appear in the driver.
377 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
378 However, I have no idea what these values are for. */
379 if (itv->hw_flags & IVTV_HW_CX25840) {
380 /* Setup VBI for the cx25840 digitizer */
382 data[3] = 0x20602060;
383 data[4] = 0x30703070;
385 data[3] = 0xB0F0B0F0;
386 data[4] = 0xA0E0A0E0;
388 /* Lines per frame */
391 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
393 /* Setup VBI for the saa7115 digitizer */
395 data[3] = 0x25256262;
396 data[4] = 0x387F7F7F;
398 data[3] = 0xABABECEC;
399 data[4] = 0xB6F1F1F1;
401 /* Lines per frame */
404 data[6] = itv->vbi.enc_size / lines;
408 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
409 data[0], data[1], data[2], data[5], data[6]);
411 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
413 /* returns the VBI encoder memory area. */
414 itv->vbi.enc_start = data[2];
415 itv->vbi.fpi = data[0];
419 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
420 itv->vbi.enc_start, data[1], itv->vbi.fpi);
423 Note that the sliced argument seems to have no effect. */
424 for (i = 2; i <= 24; i++) {
428 valid = i >= 10 && i < 22;
430 valid = i >= 6 && i < 24;
432 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
434 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
438 /* Remaining VBI questions:
439 - Is it possible to select particular VBI lines only for inclusion in the MPEG
440 stream? Currently you can only get the first X lines.
441 - Is mixed raw and sliced VBI possible?
442 - What's the meaning of the raw/sliced flag?
443 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
446 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
448 u32 data[CX2341X_MBOX_MAX_DATA];
449 struct ivtv *itv = s->itv;
450 struct cx2341x_mpeg_params *p = &itv->params;
451 int captype = 0, subtype = 0;
452 int enable_passthrough = 0;
454 if (s->v4l2dev == NULL)
457 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
460 case IVTV_ENC_STREAM_TYPE_MPG:
464 /* Stop Passthrough */
465 if (itv->output_mode == OUT_PASSTHROUGH) {
466 ivtv_passthrough_mode(itv, 0);
467 enable_passthrough = 1;
469 itv->mpg_data_received = itv->vbi_data_inserted = 0;
470 itv->dualwatch_jiffies = jiffies;
471 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
472 itv->search_pack_header = 0;
475 case IVTV_ENC_STREAM_TYPE_YUV:
476 if (itv->output_mode == OUT_PASSTHROUGH) {
478 subtype = 11; /* video+audio+decoder */
484 case IVTV_ENC_STREAM_TYPE_PCM:
488 case IVTV_ENC_STREAM_TYPE_VBI:
493 itv->vbi.inserted_frame = 0;
494 memset(itv->vbi.sliced_mpeg_size,
495 0, sizeof(itv->vbi.sliced_mpeg_size));
500 s->subtype = subtype;
501 s->buffers_stolen = 0;
503 /* Clear Streamoff flags in case left from last capture */
504 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
506 if (atomic_read(&itv->capturing) == 0) {
509 /* Always use frame based mode. Experiments have demonstrated that byte
510 stream based mode results in dropped frames and corruption. Not often,
511 but occasionally. Many thanks go to Leonard Orb who spent a lot of
512 effort and time trying to trace the cause of the drop outs. */
513 /* 1 frame per DMA */
514 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
515 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
517 /* Stuff from Windows, we don't know what it is */
518 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
519 /* According to the docs, this should be correct. However, this is
520 untested. I don't dare enable this without having tested it.
521 Only very few old cards actually have this hardware combination.
522 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
523 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
525 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
526 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
527 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
528 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
530 /* assign placeholder */
531 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
532 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
534 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
536 else if (itv->card->hw_all & IVTV_HW_SAA7114)
541 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
544 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
548 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
549 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
550 itv->pgm_info_offset = data[0];
551 itv->pgm_info_num = data[1];
552 itv->pgm_info_write_idx = 0;
553 itv->pgm_info_read_idx = 0;
555 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
556 itv->pgm_info_offset, itv->pgm_info_num);
558 /* Setup API for Stream */
559 cx2341x_update(itv, ivtv_api_func, NULL, p);
561 /* mute if capturing radio */
562 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
563 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
564 1 | (p->video_mute_yuv << 8));
568 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
569 /* event notification (on) */
570 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
571 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
574 if (atomic_read(&itv->capturing) == 0) {
575 /* Clear all Pending Interrupts */
576 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
578 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
580 /* Initialize Digitizer for Capture */
581 itv->video_dec_func(itv, VIDIOC_STREAMOFF, NULL);
582 ivtv_msleep_timeout(300, 1);
583 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
584 itv->video_dec_func(itv, VIDIOC_STREAMON, NULL);
588 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
590 IVTV_DEBUG_WARN( "Error starting capture!\n");
594 /* Start Passthrough */
595 if (enable_passthrough) {
596 ivtv_passthrough_mode(itv, 1);
599 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
600 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
602 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
604 /* you're live! sit back and await interrupts :) */
605 atomic_inc(&itv->capturing);
609 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
611 u32 data[CX2341X_MBOX_MAX_DATA];
612 struct ivtv *itv = s->itv;
613 struct cx2341x_mpeg_params *p = &itv->params;
616 if (s->v4l2dev == NULL)
619 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
621 /* set audio mode to left/stereo for dual/stereo mode. */
622 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
624 /* set number of internal decoder buffers */
625 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
628 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
630 /* extract from user packets */
631 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
632 itv->vbi.dec_start = data[0];
634 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
635 itv->vbi.dec_start, data[1]);
637 /* set decoder source settings */
638 /* Data type: 0 = mpeg from host,
639 1 = yuv from encoder,
642 case IVTV_DEC_STREAM_TYPE_YUV:
643 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
644 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
646 case IVTV_DEC_STREAM_TYPE_MPG:
651 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
652 p->width, p->height, p->audio_properties)) {
653 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
658 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
660 struct ivtv *itv = s->itv;
662 if (s->v4l2dev == NULL)
665 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
666 return 0; /* already started */
668 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
670 ivtv_setup_v4l2_decode_stream(s);
672 /* set dma size to 65536 bytes */
673 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
675 /* Clear Streamoff */
676 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
678 /* Zero out decoder counters */
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].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 if (s->v4l2dev == NULL)
728 /* This function assumes that you are allowed to stop the capture
729 and that we are actually capturing */
731 IVTV_DEBUG_INFO("Stop Capture\n");
733 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
735 if (atomic_read(&itv->capturing) == 0)
739 case IVTV_ENC_STREAM_TYPE_YUV:
742 case IVTV_ENC_STREAM_TYPE_PCM:
745 case IVTV_ENC_STREAM_TYPE_VBI:
748 case IVTV_ENC_STREAM_TYPE_MPG:
754 /* Stop Capture Mode */
755 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
762 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
763 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
765 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
766 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
767 /* only run these if we're shutting down the last cap */
768 unsigned long duration;
769 unsigned long then = jiffies;
771 add_wait_queue(&itv->eos_waitq, &wait);
773 set_current_state(TASK_INTERRUPTIBLE);
775 /* wait 2s for EOS interrupt */
776 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
778 then + msecs_to_jiffies(2000))) {
779 schedule_timeout(msecs_to_jiffies(10));
782 /* To convert jiffies to ms, we must multiply by 1000
783 * and divide by HZ. To avoid runtime division, we
784 * convert this to multiplication by 1000/HZ.
785 * Since integer division truncates, we get the best
786 * accuracy if we do a rounding calculation of the constant.
787 * Think of the case where HZ is 1024.
789 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
791 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
792 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
793 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
795 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
797 set_current_state(TASK_RUNNING);
798 remove_wait_queue(&itv->eos_waitq, &wait);
799 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
802 /* Handle any pending interrupts */
803 ivtv_msleep_timeout(100, 1);
806 atomic_dec(&itv->capturing);
808 /* Clear capture and no-read bits */
809 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
811 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
812 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
814 if (atomic_read(&itv->capturing) > 0) {
818 /* Set the following Interrupt mask bits for capture */
819 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
820 del_timer(&itv->dma_timer);
822 /* event notification (off) */
823 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
824 /* type: 0 = refresh */
825 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
826 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
827 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
835 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
837 struct ivtv *itv = s->itv;
839 if (s->v4l2dev == NULL)
842 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
845 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
848 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
851 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
854 /* Wait until the decoder is no longer running */
856 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
857 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
860 u32 data[CX2341X_MBOX_MAX_DATA];
861 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
862 if (s->q_full.buffers + s->q_dma.buffers == 0) {
867 if (ivtv_msleep_timeout(100, 1))
871 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
873 /* turn off notification of dual/stereo mode change */
874 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
876 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
877 del_timer(&itv->dma_timer);
879 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
880 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
881 ivtv_flush_queues(s);
883 /* decrement decoding */
884 atomic_dec(&itv->decoding);
886 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
887 wake_up(&itv->event_waitq);
889 /* wake up wait queues */
895 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
897 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
898 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
900 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
903 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
905 /* Prevent others from starting/stopping streams while we
906 initiate/terminate passthrough mode */
908 if (itv->output_mode == OUT_PASSTHROUGH) {
911 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
914 /* Fully initialize stream, and then unflag init */
915 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
916 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
918 /* Setup YUV Decoder */
919 ivtv_setup_v4l2_decode_stream(dec_stream);
922 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
923 atomic_inc(&itv->decoding);
925 /* Setup capture if not already done */
926 if (atomic_read(&itv->capturing) == 0) {
927 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
930 /* Start Passthrough Mode */
931 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
932 atomic_inc(&itv->capturing);
936 if (itv->output_mode != OUT_PASSTHROUGH)
939 /* Stop Passthrough Mode */
940 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
941 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
943 atomic_dec(&itv->capturing);
944 atomic_dec(&itv->decoding);
945 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
946 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
947 itv->output_mode = OUT_NONE;