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);
326 itv->vbi.start[0] = 10;
327 itv->vbi.start[1] = 273;
328 } else { /* PAL/SECAM */
330 itv->vbi.start[0] = 6;
331 itv->vbi.start[1] = 318;
334 /* setup VBI registers */
335 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
337 /* determine number of lines and total number of VBI bytes.
338 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
339 The '- 1' byte is probably an unused U or V byte. Or something...
340 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
341 header, 42 data bytes + checksum (to be confirmed) */
343 lines = itv->vbi.count * 2;
345 lines = itv->is_60hz ? 24 : 38;
346 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
350 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
352 /* Note: sliced vs raw flag doesn't seem to have any effect
353 TODO: check mode (0x02) value with older ivtv versions. */
354 data[0] = raw | 0x02 | (0xbd << 8);
356 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
358 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
359 data[2] = raw ? 4 : 8;
360 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
361 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
362 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
363 code. These values for raw VBI are obtained from a driver disassembly. The sliced
364 start/stop codes was deduced from this, but they do not appear in the driver.
365 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
366 However, I have no idea what these values are for. */
367 if (itv->hw_flags & IVTV_HW_CX25840) {
368 /* Setup VBI for the cx25840 digitizer */
370 data[3] = 0x20602060;
371 data[4] = 0x30703070;
373 data[3] = 0xB0F0B0F0;
374 data[4] = 0xA0E0A0E0;
376 /* Lines per frame */
379 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
381 /* Setup VBI for the saa7115 digitizer */
383 data[3] = 0x25256262;
384 data[4] = 0x387F7F7F;
386 data[3] = 0xABABECEC;
387 data[4] = 0xB6F1F1F1;
389 /* Lines per frame */
392 data[6] = itv->vbi.enc_size / lines;
396 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
397 data[0], data[1], data[2], data[5], data[6]);
399 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
401 /* returns the VBI encoder memory area. */
402 itv->vbi.enc_start = data[2];
403 itv->vbi.fpi = data[0];
407 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
408 itv->vbi.enc_start, data[1], itv->vbi.fpi);
411 Note that the sliced argument seems to have no effect. */
412 for (i = 2; i <= 24; i++) {
416 valid = i >= 10 && i < 22;
418 valid = i >= 6 && i < 24;
420 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
422 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
426 /* Remaining VBI questions:
427 - Is it possible to select particular VBI lines only for inclusion in the MPEG
428 stream? Currently you can only get the first X lines.
429 - Is mixed raw and sliced VBI possible?
430 - What's the meaning of the raw/sliced flag?
431 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
434 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
436 u32 data[CX2341X_MBOX_MAX_DATA];
437 struct ivtv *itv = s->itv;
438 int captype = 0, subtype = 0;
439 int enable_passthrough = 0;
441 if (s->v4l2dev == NULL)
444 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
447 case IVTV_ENC_STREAM_TYPE_MPG:
451 /* Stop Passthrough */
452 if (itv->output_mode == OUT_PASSTHROUGH) {
453 ivtv_passthrough_mode(itv, 0);
454 enable_passthrough = 1;
456 itv->mpg_data_received = itv->vbi_data_inserted = 0;
457 itv->dualwatch_jiffies = jiffies;
458 itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300;
459 itv->search_pack_header = 0;
462 case IVTV_ENC_STREAM_TYPE_YUV:
463 if (itv->output_mode == OUT_PASSTHROUGH) {
465 subtype = 11; /* video+audio+decoder */
471 case IVTV_ENC_STREAM_TYPE_PCM:
475 case IVTV_ENC_STREAM_TYPE_VBI:
480 itv->vbi.inserted_frame = 0;
481 memset(itv->vbi.sliced_mpeg_size,
482 0, sizeof(itv->vbi.sliced_mpeg_size));
487 s->subtype = subtype;
488 s->buffers_stolen = 0;
490 /* mute/unmute video */
491 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 1 : 0);
493 /* Clear Streamoff flags in case left from last capture */
494 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
496 if (atomic_read(&itv->capturing) == 0) {
499 /* Always use frame based mode. Experiments have demonstrated that byte
500 stream based mode results in dropped frames and corruption. Not often,
501 but occasionally. Many thanks go to Leonard Orb who spent a lot of
502 effort and time trying to trace the cause of the drop outs. */
503 /* 1 frame per DMA */
504 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
505 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
507 /* Stuff from Windows, we don't know what it is */
508 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
509 /* According to the docs, this should be correct. However, this is
510 untested. I don't dare enable this without having tested it.
511 Only very few old cards actually have this hardware combination.
512 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
513 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
515 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
516 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
517 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
518 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
520 /* assign placeholder */
521 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
522 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
524 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
526 else if (itv->card->hw_all & IVTV_HW_SAA7114)
531 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
534 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
538 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
539 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
540 itv->pgm_info_offset = data[0];
541 itv->pgm_info_num = data[1];
542 itv->pgm_info_write_idx = 0;
543 itv->pgm_info_read_idx = 0;
545 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
546 itv->pgm_info_offset, itv->pgm_info_num);
548 /* Setup API for Stream */
549 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
553 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
554 /* event notification (on) */
555 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
556 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
559 if (atomic_read(&itv->capturing) == 0) {
560 /* Clear all Pending Interrupts */
561 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
563 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
565 /* Initialize Digitizer for Capture */
566 itv->video_dec_func(itv, VIDIOC_STREAMOFF, 0);
567 ivtv_msleep_timeout(300, 1);
568 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
569 itv->video_dec_func(itv, VIDIOC_STREAMON, 0);
573 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
575 IVTV_DEBUG_WARN( "Error starting capture!\n");
579 /* Start Passthrough */
580 if (enable_passthrough) {
581 ivtv_passthrough_mode(itv, 1);
584 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
585 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
587 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
589 /* you're live! sit back and await interrupts :) */
590 atomic_inc(&itv->capturing);
594 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
596 u32 data[CX2341X_MBOX_MAX_DATA];
597 struct ivtv *itv = s->itv;
600 if (s->v4l2dev == NULL)
603 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
605 /* set audio mode to left/stereo for dual/stereo mode. */
606 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
608 /* set number of internal decoder buffers */
609 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
612 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
614 /* extract from user packets */
615 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
616 itv->vbi.dec_start = data[0];
618 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
619 itv->vbi.dec_start, data[1]);
621 /* set decoder source settings */
622 /* Data type: 0 = mpeg from host,
623 1 = yuv from encoder,
626 case IVTV_DEC_STREAM_TYPE_YUV:
627 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
628 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
630 case IVTV_DEC_STREAM_TYPE_MPG:
635 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
636 itv->params.width, itv->params.height, itv->params.audio_properties)) {
637 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
642 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
644 struct ivtv *itv = s->itv;
646 if (s->v4l2dev == NULL)
649 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
650 return 0; /* already started */
652 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
654 /* Clear Streamoff */
655 if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
656 /* Initialize Decoder */
657 /* Reprogram Decoder YUV Buffers for YUV */
658 write_reg(yuv_offset[0] >> 4, 0x82c);
659 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
660 write_reg(yuv_offset[0] >> 4, 0x834);
661 write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838);
663 write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24);
665 write_reg_sync(0x00108080, 0x2898);
666 /* Enable YUV decoder output */
667 write_reg_sync(0x01, IVTV_REG_VDM);
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_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
677 /* Zero out decoder counters */
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
687 /* turn on notification of dual/stereo mode change */
688 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
691 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
693 /* Clear the following Interrupt mask bits for decoding */
694 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
695 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
697 /* you're live! sit back and await interrupts :) */
698 atomic_inc(&itv->decoding);
702 void ivtv_stop_all_captures(struct ivtv *itv)
706 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
707 struct ivtv_stream *s = &itv->streams[i];
709 if (s->v4l2dev == NULL)
711 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
712 ivtv_stop_v4l2_encode_stream(s, 0);
717 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
719 struct ivtv *itv = s->itv;
720 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);
767 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
768 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
769 /* only run these if we're shutting down the last cap */
770 unsigned long duration;
773 add_wait_queue(&itv->eos_waitq, &wait);
775 set_current_state(TASK_INTERRUPTIBLE);
777 /* wait 2s for EOS interrupt */
778 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
779 jiffies < then + msecs_to_jiffies (2000)) {
780 schedule_timeout(msecs_to_jiffies(10));
783 /* To convert jiffies to ms, we must multiply by 1000
784 * and divide by HZ. To avoid runtime division, we
785 * convert this to multiplication by 1000/HZ.
786 * Since integer division truncates, we get the best
787 * accuracy if we do a rounding calculation of the constant.
788 * Think of the case where HZ is 1024.
790 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
792 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
793 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
794 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
796 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
798 set_current_state(TASK_RUNNING);
799 remove_wait_queue(&itv->eos_waitq, &wait);
804 /* Handle any pending interrupts */
805 ivtv_msleep_timeout(100, 1);
808 atomic_dec(&itv->capturing);
810 /* Clear capture and no-read bits */
811 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
813 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
814 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
816 if (atomic_read(&itv->capturing) > 0) {
820 /* Set the following Interrupt mask bits for capture */
821 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
822 del_timer(&itv->dma_timer);
824 /* event notification (off) */
825 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
826 /* type: 0 = refresh */
827 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
828 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
829 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
837 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
839 struct ivtv *itv = s->itv;
841 if (s->v4l2dev == NULL)
844 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
847 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
850 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
853 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
856 /* Wait until the decoder is no longer running */
858 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
859 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
862 u32 data[CX2341X_MBOX_MAX_DATA];
863 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
864 if (s->q_full.buffers + s->q_dma.buffers == 0) {
869 if (ivtv_msleep_timeout(100, 1))
873 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
875 /* turn off notification of dual/stereo mode change */
876 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
878 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
879 del_timer(&itv->dma_timer);
881 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
882 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
883 ivtv_flush_queues(s);
885 /* decrement decoding */
886 atomic_dec(&itv->decoding);
888 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
889 wake_up(&itv->event_waitq);
891 /* wake up wait queues */
897 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
899 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
900 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
902 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
905 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
907 /* Prevent others from starting/stopping streams while we
908 initiate/terminate passthrough mode */
910 if (itv->output_mode == OUT_PASSTHROUGH) {
913 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
916 /* Fully initialize stream, and then unflag init */
917 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
918 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
920 /* Setup YUV Decoder */
921 ivtv_setup_v4l2_decode_stream(dec_stream);
924 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
925 atomic_inc(&itv->decoding);
927 /* Setup capture if not already done */
928 if (atomic_read(&itv->capturing) == 0) {
929 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
932 /* Start Passthrough Mode */
933 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
934 atomic_inc(&itv->capturing);
938 if (itv->output_mode != OUT_PASSTHROUGH)
941 /* Stop Passthrough Mode */
942 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
943 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
945 atomic_dec(&itv->capturing);
946 atomic_dec(&itv->decoding);
947 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
948 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
949 itv->output_mode = OUT_NONE;