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 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 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 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_reg_dev(struct ivtv *itv, int type)
171 struct ivtv_stream *s = &itv->streams[type];
172 int vfl_type = ivtv_stream_info[type].vfl_type;
173 int minor_offset = ivtv_stream_info[type].minor_offset;
176 /* These four fields are always initialized. If v4l2dev == 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 if (minor_offset >= 0)
191 /* card number + user defined offset + device offset */
192 minor = itv->num + ivtv_first_minor + minor_offset;
196 /* User explicitly selected 0 buffers for these streams, so don't
198 if (minor >= 0 && ivtv_stream_info[type].dma != PCI_DMA_NONE &&
199 itv->options.kilobytes[type] == 0) {
200 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
204 ivtv_stream_init(itv, type);
206 /* allocate and initialize the v4l2 video device structure */
207 s->v4l2dev = video_device_alloc();
208 if (s->v4l2dev == NULL) {
209 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
213 s->v4l2dev->type = VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT |
214 VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER;
215 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
216 s->v4l2dev->type |= VID_TYPE_MPEG_DECODER;
218 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
221 s->v4l2dev->minor = minor;
222 s->v4l2dev->dev = &itv->dev->dev;
223 s->v4l2dev->fops = ivtv_stream_info[type].fops;
224 s->v4l2dev->release = video_device_release;
227 /* Register device. First try the desired minor, then any free one. */
228 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
229 video_register_device(s->v4l2dev, vfl_type, -1)) {
230 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
232 video_device_release(s->v4l2dev);
238 /* Don't register a 'hidden' stream (OSD) */
239 IVTV_INFO("Created framebuffer stream for %s\n", s->name);
244 case VFL_TYPE_GRABBER:
245 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
246 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
249 IVTV_INFO("Registered device radio%d for %s\n",
250 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
253 if (itv->options.kilobytes[type])
254 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
255 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
256 s->name, itv->options.kilobytes[type]);
258 IVTV_INFO("Registered device vbi%d for %s\n",
259 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
265 /* Initialize v4l2 variables and register v4l2 devices */
266 int ivtv_streams_setup(struct ivtv *itv)
270 /* Setup V4L2 Devices */
271 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
272 /* Register Device */
273 if (ivtv_reg_dev(itv, type))
276 if (itv->streams[type].v4l2dev == NULL)
279 /* Allocate Stream */
280 if (ivtv_stream_alloc(&itv->streams[type]))
283 if (type == IVTV_MAX_STREAMS) {
287 /* One or more streams could not be initialized. Clean 'em all up. */
288 ivtv_streams_cleanup(itv);
292 /* Unregister v4l2 devices */
293 void ivtv_streams_cleanup(struct ivtv *itv)
297 /* Teardown all streams */
298 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
299 struct video_device *vdev = itv->streams[type].v4l2dev;
301 itv->streams[type].v4l2dev = NULL;
305 ivtv_stream_free(&itv->streams[type]);
307 if (vdev->minor == -1) /* 'Hidden' never registered stream (OSD) */
308 video_device_release(vdev);
309 else /* All others, just unregister. */
310 video_unregister_device(vdev);
314 static void ivtv_vbi_setup(struct ivtv *itv)
316 int raw = itv->vbi.sliced_in->service_set == 0;
317 u32 data[CX2341X_MBOX_MAX_DATA];
322 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
324 /* setup VBI registers */
325 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
327 /* determine number of lines and total number of VBI bytes.
328 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
329 The '- 1' byte is probably an unused U or V byte. Or something...
330 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
331 header, 42 data bytes + checksum (to be confirmed) */
333 lines = itv->vbi.count * 2;
335 lines = itv->is_60hz ? 24 : 38;
336 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
340 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
342 /* Note: sliced vs raw flag doesn't seem to have any effect
343 TODO: check mode (0x02) value with older ivtv versions. */
344 data[0] = raw | 0x02 | (0xbd << 8);
346 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
348 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
349 data[2] = raw ? 4 : 8;
350 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
351 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
352 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
353 code. These values for raw VBI are obtained from a driver disassembly. The sliced
354 start/stop codes was deduced from this, but they do not appear in the driver.
355 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
356 However, I have no idea what these values are for. */
357 if (itv->hw_flags & IVTV_HW_CX25840) {
358 /* Setup VBI for the cx25840 digitizer */
360 data[3] = 0x20602060;
361 data[4] = 0x30703070;
363 data[3] = 0xB0F0B0F0;
364 data[4] = 0xA0E0A0E0;
366 /* Lines per frame */
369 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
371 /* Setup VBI for the saa7115 digitizer */
373 data[3] = 0x25256262;
374 data[4] = 0x387F7F7F;
376 data[3] = 0xABABECEC;
377 data[4] = 0xB6F1F1F1;
379 /* Lines per frame */
382 data[6] = itv->vbi.enc_size / lines;
386 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
387 data[0], data[1], data[2], data[5], data[6]);
389 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
391 /* returns the VBI encoder memory area. */
392 itv->vbi.enc_start = data[2];
393 itv->vbi.fpi = data[0];
397 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
398 itv->vbi.enc_start, data[1], itv->vbi.fpi);
401 Note that the sliced argument seems to have no effect. */
402 for (i = 2; i <= 24; i++) {
406 valid = i >= 10 && i < 22;
408 valid = i >= 6 && i < 24;
410 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
412 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
416 /* Remaining VBI questions:
417 - Is it possible to select particular VBI lines only for inclusion in the MPEG
418 stream? Currently you can only get the first X lines.
419 - Is mixed raw and sliced VBI possible?
420 - What's the meaning of the raw/sliced flag?
421 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
424 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
426 u32 data[CX2341X_MBOX_MAX_DATA];
427 struct ivtv *itv = s->itv;
428 int captype = 0, subtype = 0;
429 int enable_passthrough = 0;
431 if (s->v4l2dev == NULL)
434 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
437 case IVTV_ENC_STREAM_TYPE_MPG:
441 /* Stop Passthrough */
442 if (itv->output_mode == OUT_PASSTHROUGH) {
443 ivtv_passthrough_mode(itv, 0);
444 enable_passthrough = 1;
446 itv->mpg_data_received = itv->vbi_data_inserted = 0;
447 itv->dualwatch_jiffies = jiffies;
448 itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300;
449 itv->search_pack_header = 0;
452 case IVTV_ENC_STREAM_TYPE_YUV:
453 if (itv->output_mode == OUT_PASSTHROUGH) {
455 subtype = 11; /* video+audio+decoder */
461 case IVTV_ENC_STREAM_TYPE_PCM:
465 case IVTV_ENC_STREAM_TYPE_VBI:
470 itv->vbi.inserted_frame = 0;
471 memset(itv->vbi.sliced_mpeg_size,
472 0, sizeof(itv->vbi.sliced_mpeg_size));
477 s->subtype = subtype;
478 s->buffers_stolen = 0;
480 /* mute/unmute video */
481 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
482 test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 0x00808001 : 0);
484 /* Clear Streamoff flags in case left from last capture */
485 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
487 if (atomic_read(&itv->capturing) == 0) {
490 /* Always use frame based mode. Experiments have demonstrated that byte
491 stream based mode results in dropped frames and corruption. Not often,
492 but occasionally. Many thanks go to Leonard Orb who spent a lot of
493 effort and time trying to trace the cause of the drop outs. */
494 /* 1 frame per DMA */
495 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
496 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
498 /* Stuff from Windows, we don't know what it is */
499 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
500 /* According to the docs, this should be correct. However, this is
501 untested. I don't dare enable this without having tested it.
502 Only very few old cards actually have this hardware combination.
503 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
504 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
506 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
507 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
508 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
509 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
511 /* assign placeholder */
512 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
513 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
515 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
517 else if (itv->card->hw_all & IVTV_HW_SAA7114)
522 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
525 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
529 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
530 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
531 itv->pgm_info_offset = data[0];
532 itv->pgm_info_num = data[1];
533 itv->pgm_info_write_idx = 0;
534 itv->pgm_info_read_idx = 0;
536 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
537 itv->pgm_info_offset, itv->pgm_info_num);
539 /* Setup API for Stream */
540 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
544 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
545 /* event notification (on) */
546 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
547 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
550 if (atomic_read(&itv->capturing) == 0) {
551 /* Clear all Pending Interrupts */
552 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
554 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
556 /* Initialize Digitizer for Capture */
557 itv->video_dec_func(itv, VIDIOC_STREAMOFF, 0);
558 ivtv_msleep_timeout(300, 1);
559 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
560 itv->video_dec_func(itv, VIDIOC_STREAMON, 0);
564 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
566 IVTV_DEBUG_WARN( "Error starting capture!\n");
570 /* Start Passthrough */
571 if (enable_passthrough) {
572 ivtv_passthrough_mode(itv, 1);
575 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
576 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
578 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
580 /* you're live! sit back and await interrupts :) */
581 atomic_inc(&itv->capturing);
585 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
587 u32 data[CX2341X_MBOX_MAX_DATA];
588 struct ivtv *itv = s->itv;
591 if (s->v4l2dev == NULL)
594 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
596 /* set audio mode to left/stereo for dual/stereo mode. */
597 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
599 /* set number of internal decoder buffers */
600 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
603 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
605 /* extract from user packets */
606 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
607 itv->vbi.dec_start = data[0];
609 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
610 itv->vbi.dec_start, data[1]);
612 /* set decoder source settings */
613 /* Data type: 0 = mpeg from host,
614 1 = yuv from encoder,
617 case IVTV_DEC_STREAM_TYPE_YUV:
618 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
619 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
621 case IVTV_DEC_STREAM_TYPE_MPG:
626 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
627 itv->params.width, itv->params.height, itv->params.audio_properties)) {
628 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
633 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
635 struct ivtv *itv = s->itv;
637 if (s->v4l2dev == NULL)
640 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
641 return 0; /* already started */
643 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
645 /* Clear Streamoff */
646 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
647 /* Initialize Decoder */
648 /* Reprogram Decoder YUV Buffers for YUV */
649 write_reg(yuv_offset[0] >> 4, 0x82c);
650 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
651 write_reg(yuv_offset[0] >> 4, 0x834);
652 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
654 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
656 write_reg_sync(0x00108080, 0x2898);
657 /* Enable YUV decoder output */
658 write_reg_sync(0x01, IVTV_REG_VDM);
661 ivtv_setup_v4l2_decode_stream(s);
663 /* set dma size to 65536 bytes */
664 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
666 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
668 /* Zero out decoder counters */
669 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
670 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
671 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
672 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
673 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
674 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
675 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
676 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
678 /* turn on notification of dual/stereo mode change */
679 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
682 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
684 /* Clear the following Interrupt mask bits for decoding */
685 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
686 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
688 /* you're live! sit back and await interrupts :) */
689 atomic_inc(&itv->decoding);
693 void ivtv_stop_all_captures(struct ivtv *itv)
697 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
698 struct ivtv_stream *s = &itv->streams[i];
700 if (s->v4l2dev == NULL)
702 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
703 ivtv_stop_v4l2_encode_stream(s, 0);
708 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
710 struct ivtv *itv = s->itv;
711 DECLARE_WAITQUEUE(wait, current);
715 if (s->v4l2dev == NULL)
718 /* This function assumes that you are allowed to stop the capture
719 and that we are actually capturing */
721 IVTV_DEBUG_INFO("Stop Capture\n");
723 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
725 if (atomic_read(&itv->capturing) == 0)
729 case IVTV_ENC_STREAM_TYPE_YUV:
732 case IVTV_ENC_STREAM_TYPE_PCM:
735 case IVTV_ENC_STREAM_TYPE_VBI:
738 case IVTV_ENC_STREAM_TYPE_MPG:
744 /* Stop Capture Mode */
745 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
752 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
753 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
755 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
756 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
757 /* only run these if we're shutting down the last cap */
758 unsigned long duration;
759 unsigned long then = jiffies;
761 add_wait_queue(&itv->eos_waitq, &wait);
763 set_current_state(TASK_INTERRUPTIBLE);
765 /* wait 2s for EOS interrupt */
766 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
767 jiffies < then + msecs_to_jiffies (2000)) {
768 schedule_timeout(msecs_to_jiffies(10));
771 /* To convert jiffies to ms, we must multiply by 1000
772 * and divide by HZ. To avoid runtime division, we
773 * convert this to multiplication by 1000/HZ.
774 * Since integer division truncates, we get the best
775 * accuracy if we do a rounding calculation of the constant.
776 * Think of the case where HZ is 1024.
778 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
780 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
781 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
782 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
784 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
786 set_current_state(TASK_RUNNING);
787 remove_wait_queue(&itv->eos_waitq, &wait);
788 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
791 /* Handle any pending interrupts */
792 ivtv_msleep_timeout(100, 1);
795 atomic_dec(&itv->capturing);
797 /* Clear capture and no-read bits */
798 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
800 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
801 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
803 if (atomic_read(&itv->capturing) > 0) {
807 /* Set the following Interrupt mask bits for capture */
808 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
809 del_timer(&itv->dma_timer);
811 /* event notification (off) */
812 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
813 /* type: 0 = refresh */
814 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
815 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
816 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
824 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
826 struct ivtv *itv = s->itv;
828 if (s->v4l2dev == NULL)
831 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
834 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
837 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
840 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
843 /* Wait until the decoder is no longer running */
845 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
846 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
849 u32 data[CX2341X_MBOX_MAX_DATA];
850 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
851 if (s->q_full.buffers + s->q_dma.buffers == 0) {
856 if (ivtv_msleep_timeout(100, 1))
860 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
862 /* turn off notification of dual/stereo mode change */
863 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
865 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
866 del_timer(&itv->dma_timer);
868 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
869 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
870 ivtv_flush_queues(s);
872 /* decrement decoding */
873 atomic_dec(&itv->decoding);
875 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
876 wake_up(&itv->event_waitq);
878 /* wake up wait queues */
884 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
886 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
887 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
889 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
892 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
894 /* Prevent others from starting/stopping streams while we
895 initiate/terminate passthrough mode */
897 if (itv->output_mode == OUT_PASSTHROUGH) {
900 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
903 /* Fully initialize stream, and then unflag init */
904 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
905 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
907 /* Setup YUV Decoder */
908 ivtv_setup_v4l2_decode_stream(dec_stream);
911 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
912 atomic_inc(&itv->decoding);
914 /* Setup capture if not already done */
915 if (atomic_read(&itv->capturing) == 0) {
916 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
919 /* Start Passthrough Mode */
920 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
921 atomic_inc(&itv->capturing);
925 if (itv->output_mode != OUT_PASSTHROUGH)
928 /* Stop Passthrough Mode */
929 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
930 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
932 atomic_dec(&itv->capturing);
933 atomic_dec(&itv->decoding);
934 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
935 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
936 itv->output_mode = OUT_NONE;