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 */
347 v4l2_subdev_call(itv->sd_video, video, 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 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
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;
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 /* Avoid tinny audio problem - ensure audio clocks are going */
582 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
583 /* Avoid unpredictable PCI bus hang - disable video clocks */
584 v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
585 ivtv_msleep_timeout(300, 1);
586 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
587 v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
591 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
593 IVTV_DEBUG_WARN( "Error starting capture!\n");
597 /* Start Passthrough */
598 if (enable_passthrough) {
599 ivtv_passthrough_mode(itv, 1);
602 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
603 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
605 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
607 /* you're live! sit back and await interrupts :) */
608 atomic_inc(&itv->capturing);
612 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
614 u32 data[CX2341X_MBOX_MAX_DATA];
615 struct ivtv *itv = s->itv;
616 struct cx2341x_mpeg_params *p = &itv->params;
622 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
624 /* set audio mode to left/stereo for dual/stereo mode. */
625 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
627 /* set number of internal decoder buffers */
628 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
631 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
633 /* extract from user packets */
634 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
635 itv->vbi.dec_start = data[0];
637 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
638 itv->vbi.dec_start, data[1]);
640 /* set decoder source settings */
641 /* Data type: 0 = mpeg from host,
642 1 = yuv from encoder,
645 case IVTV_DEC_STREAM_TYPE_YUV:
646 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
647 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
649 case IVTV_DEC_STREAM_TYPE_MPG:
654 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
655 p->width, p->height, p->audio_properties)) {
656 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
661 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
663 struct ivtv *itv = s->itv;
668 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
669 return 0; /* already started */
671 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
673 ivtv_setup_v4l2_decode_stream(s);
675 /* set dma size to 65536 bytes */
676 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
678 /* Clear Streamoff */
679 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
681 /* Zero out decoder counters */
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
686 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
687 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
688 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
689 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
691 /* turn on notification of dual/stereo mode change */
692 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
695 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
697 /* Clear the following Interrupt mask bits for decoding */
698 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
699 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
701 /* you're live! sit back and await interrupts :) */
702 atomic_inc(&itv->decoding);
706 void ivtv_stop_all_captures(struct ivtv *itv)
710 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
711 struct ivtv_stream *s = &itv->streams[i];
715 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
716 ivtv_stop_v4l2_encode_stream(s, 0);
721 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
723 struct ivtv *itv = s->itv;
724 DECLARE_WAITQUEUE(wait, current);
731 /* This function assumes that you are allowed to stop the capture
732 and that we are actually capturing */
734 IVTV_DEBUG_INFO("Stop Capture\n");
736 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
738 if (atomic_read(&itv->capturing) == 0)
742 case IVTV_ENC_STREAM_TYPE_YUV:
745 case IVTV_ENC_STREAM_TYPE_PCM:
748 case IVTV_ENC_STREAM_TYPE_VBI:
751 case IVTV_ENC_STREAM_TYPE_MPG:
757 /* Stop Capture Mode */
758 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
765 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
766 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
768 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
769 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
770 /* only run these if we're shutting down the last cap */
771 unsigned long duration;
772 unsigned long then = jiffies;
774 add_wait_queue(&itv->eos_waitq, &wait);
776 set_current_state(TASK_INTERRUPTIBLE);
778 /* wait 2s for EOS interrupt */
779 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
781 then + msecs_to_jiffies(2000))) {
782 schedule_timeout(msecs_to_jiffies(10));
785 /* To convert jiffies to ms, we must multiply by 1000
786 * and divide by HZ. To avoid runtime division, we
787 * convert this to multiplication by 1000/HZ.
788 * Since integer division truncates, we get the best
789 * accuracy if we do a rounding calculation of the constant.
790 * Think of the case where HZ is 1024.
792 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
794 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
795 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
796 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
798 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
800 set_current_state(TASK_RUNNING);
801 remove_wait_queue(&itv->eos_waitq, &wait);
802 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
805 /* Handle any pending interrupts */
806 ivtv_msleep_timeout(100, 1);
809 atomic_dec(&itv->capturing);
811 /* Clear capture and no-read bits */
812 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
814 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
815 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
817 if (atomic_read(&itv->capturing) > 0) {
821 /* Set the following Interrupt mask bits for capture */
822 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
823 del_timer(&itv->dma_timer);
825 /* event notification (off) */
826 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
827 /* type: 0 = refresh */
828 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
829 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
830 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
833 /* Raw-passthrough is implied on start. Make sure it's stopped so
834 the encoder will re-initialize when next started */
835 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
842 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
844 static const struct v4l2_event ev = {
845 .type = V4L2_EVENT_EOS,
847 struct ivtv *itv = s->itv;
852 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
855 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
858 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
861 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
864 /* Wait until the decoder is no longer running */
866 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
867 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
870 u32 data[CX2341X_MBOX_MAX_DATA];
871 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
872 if (s->q_full.buffers + s->q_dma.buffers == 0) {
877 if (ivtv_msleep_timeout(100, 1))
881 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
883 /* turn off notification of dual/stereo mode change */
884 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
886 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
887 del_timer(&itv->dma_timer);
889 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
890 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
891 ivtv_flush_queues(s);
893 /* decrement decoding */
894 atomic_dec(&itv->decoding);
896 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
897 wake_up(&itv->event_waitq);
898 v4l2_event_queue(s->vdev, &ev);
900 /* wake up wait queues */
906 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
908 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
909 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
911 if (yuv_stream->vdev == NULL || dec_stream->vdev == NULL)
914 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
916 /* Prevent others from starting/stopping streams while we
917 initiate/terminate passthrough mode */
919 if (itv->output_mode == OUT_PASSTHROUGH) {
922 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
925 /* Fully initialize stream, and then unflag init */
926 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
927 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
929 /* Setup YUV Decoder */
930 ivtv_setup_v4l2_decode_stream(dec_stream);
933 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
934 atomic_inc(&itv->decoding);
936 /* Setup capture if not already done */
937 if (atomic_read(&itv->capturing) == 0) {
938 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
941 /* Start Passthrough Mode */
942 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
943 atomic_inc(&itv->capturing);
947 if (itv->output_mode != OUT_PASSTHROUGH)
950 /* Stop Passthrough Mode */
951 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
952 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
954 atomic_dec(&itv->capturing);
955 atomic_dec(&itv->decoding);
956 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
957 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
958 itv->output_mode = OUT_NONE;