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 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
214 s->v4l2dev->minor = minor;
215 s->v4l2dev->parent = &itv->dev->dev;
216 s->v4l2dev->fops = ivtv_stream_info[type].fops;
217 s->v4l2dev->release = video_device_release;
218 s->v4l2dev->tvnorms = V4L2_STD_ALL;
219 ivtv_set_funcs(s->v4l2dev);
223 /* Initialize v4l2 variables and prepare v4l2 devices */
224 int ivtv_streams_setup(struct ivtv *itv)
228 /* Setup V4L2 Devices */
229 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
231 if (ivtv_prep_dev(itv, type))
234 if (itv->streams[type].v4l2dev == NULL)
237 /* Allocate Stream */
238 if (ivtv_stream_alloc(&itv->streams[type]))
241 if (type == IVTV_MAX_STREAMS)
244 /* One or more streams could not be initialized. Clean 'em all up. */
245 ivtv_streams_cleanup(itv, 0);
249 static int ivtv_reg_dev(struct ivtv *itv, int type)
251 struct ivtv_stream *s = &itv->streams[type];
252 int vfl_type = ivtv_stream_info[type].vfl_type;
255 if (s->v4l2dev == NULL)
258 minor = s->v4l2dev->minor;
259 /* Register device. First try the desired minor, then any free one. */
260 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
261 video_register_device(s->v4l2dev, vfl_type, -1)) {
262 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
264 video_device_release(s->v4l2dev);
270 case VFL_TYPE_GRABBER:
271 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
272 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
275 IVTV_INFO("Registered device radio%d for %s\n",
276 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
279 if (itv->options.kilobytes[type])
280 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
281 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
282 s->name, itv->options.kilobytes[type]);
284 IVTV_INFO("Registered device vbi%d for %s\n",
285 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
291 /* Register v4l2 devices */
292 int ivtv_streams_register(struct ivtv *itv)
297 /* Register V4L2 devices */
298 for (type = 0; type < IVTV_MAX_STREAMS; type++)
299 err |= ivtv_reg_dev(itv, type);
304 /* One or more streams could not be initialized. Clean 'em all up. */
305 ivtv_streams_cleanup(itv, 1);
309 /* Unregister v4l2 devices */
310 void ivtv_streams_cleanup(struct ivtv *itv, int unregister)
314 /* Teardown all streams */
315 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
316 struct video_device *vdev = itv->streams[type].v4l2dev;
318 itv->streams[type].v4l2dev = NULL;
322 ivtv_stream_free(&itv->streams[type]);
323 /* Unregister or release device */
325 video_unregister_device(vdev);
327 video_device_release(vdev);
331 static void ivtv_vbi_setup(struct ivtv *itv)
333 int raw = itv->vbi.sliced_in->service_set == 0;
334 u32 data[CX2341X_MBOX_MAX_DATA];
339 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
341 /* setup VBI registers */
342 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
344 /* determine number of lines and total number of VBI bytes.
345 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
346 The '- 1' byte is probably an unused U or V byte. Or something...
347 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
348 header, 42 data bytes + checksum (to be confirmed) */
350 lines = itv->vbi.count * 2;
352 lines = itv->is_60hz ? 24 : 38;
353 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
357 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
359 /* Note: sliced vs raw flag doesn't seem to have any effect
360 TODO: check mode (0x02) value with older ivtv versions. */
361 data[0] = raw | 0x02 | (0xbd << 8);
363 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
365 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
366 data[2] = raw ? 4 : 8;
367 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
368 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
369 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
370 code. These values for raw VBI are obtained from a driver disassembly. The sliced
371 start/stop codes was deduced from this, but they do not appear in the driver.
372 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
373 However, I have no idea what these values are for. */
374 if (itv->hw_flags & IVTV_HW_CX25840) {
375 /* Setup VBI for the cx25840 digitizer */
377 data[3] = 0x20602060;
378 data[4] = 0x30703070;
380 data[3] = 0xB0F0B0F0;
381 data[4] = 0xA0E0A0E0;
383 /* Lines per frame */
386 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
388 /* Setup VBI for the saa7115 digitizer */
390 data[3] = 0x25256262;
391 data[4] = 0x387F7F7F;
393 data[3] = 0xABABECEC;
394 data[4] = 0xB6F1F1F1;
396 /* Lines per frame */
399 data[6] = itv->vbi.enc_size / lines;
403 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
404 data[0], data[1], data[2], data[5], data[6]);
406 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
408 /* returns the VBI encoder memory area. */
409 itv->vbi.enc_start = data[2];
410 itv->vbi.fpi = data[0];
414 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
415 itv->vbi.enc_start, data[1], itv->vbi.fpi);
418 Note that the sliced argument seems to have no effect. */
419 for (i = 2; i <= 24; i++) {
423 valid = i >= 10 && i < 22;
425 valid = i >= 6 && i < 24;
427 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
429 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
433 /* Remaining VBI questions:
434 - Is it possible to select particular VBI lines only for inclusion in the MPEG
435 stream? Currently you can only get the first X lines.
436 - Is mixed raw and sliced VBI possible?
437 - What's the meaning of the raw/sliced flag?
438 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
441 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
443 u32 data[CX2341X_MBOX_MAX_DATA];
444 struct ivtv *itv = s->itv;
445 struct cx2341x_mpeg_params *p = &itv->params;
446 int captype = 0, subtype = 0;
447 int enable_passthrough = 0;
449 if (s->v4l2dev == NULL)
452 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
455 case IVTV_ENC_STREAM_TYPE_MPG:
459 /* Stop Passthrough */
460 if (itv->output_mode == OUT_PASSTHROUGH) {
461 ivtv_passthrough_mode(itv, 0);
462 enable_passthrough = 1;
464 itv->mpg_data_received = itv->vbi_data_inserted = 0;
465 itv->dualwatch_jiffies = jiffies;
466 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
467 itv->search_pack_header = 0;
470 case IVTV_ENC_STREAM_TYPE_YUV:
471 if (itv->output_mode == OUT_PASSTHROUGH) {
473 subtype = 11; /* video+audio+decoder */
479 case IVTV_ENC_STREAM_TYPE_PCM:
483 case IVTV_ENC_STREAM_TYPE_VBI:
488 itv->vbi.inserted_frame = 0;
489 memset(itv->vbi.sliced_mpeg_size,
490 0, sizeof(itv->vbi.sliced_mpeg_size));
495 s->subtype = subtype;
496 s->buffers_stolen = 0;
498 /* Clear Streamoff flags in case left from last capture */
499 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
501 if (atomic_read(&itv->capturing) == 0) {
504 /* Always use frame based mode. Experiments have demonstrated that byte
505 stream based mode results in dropped frames and corruption. Not often,
506 but occasionally. Many thanks go to Leonard Orb who spent a lot of
507 effort and time trying to trace the cause of the drop outs. */
508 /* 1 frame per DMA */
509 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
510 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
512 /* Stuff from Windows, we don't know what it is */
513 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
514 /* According to the docs, this should be correct. However, this is
515 untested. I don't dare enable this without having tested it.
516 Only very few old cards actually have this hardware combination.
517 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
518 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
520 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
521 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
522 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
523 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
525 /* assign placeholder */
526 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
527 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
529 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
531 else if (itv->card->hw_all & IVTV_HW_SAA7114)
536 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
539 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
543 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
544 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
545 itv->pgm_info_offset = data[0];
546 itv->pgm_info_num = data[1];
547 itv->pgm_info_write_idx = 0;
548 itv->pgm_info_read_idx = 0;
550 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
551 itv->pgm_info_offset, itv->pgm_info_num);
553 /* Setup API for Stream */
554 cx2341x_update(itv, ivtv_api_func, NULL, p);
556 /* mute if capturing radio */
557 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
558 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
559 1 | (p->video_mute_yuv << 8));
563 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
564 /* event notification (on) */
565 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
566 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
569 if (atomic_read(&itv->capturing) == 0) {
570 /* Clear all Pending Interrupts */
571 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
573 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
575 /* Initialize Digitizer for Capture */
576 itv->video_dec_func(itv, VIDIOC_STREAMOFF, NULL);
577 ivtv_msleep_timeout(300, 1);
578 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
579 itv->video_dec_func(itv, VIDIOC_STREAMON, NULL);
583 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
585 IVTV_DEBUG_WARN( "Error starting capture!\n");
589 /* Start Passthrough */
590 if (enable_passthrough) {
591 ivtv_passthrough_mode(itv, 1);
594 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
595 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
597 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
599 /* you're live! sit back and await interrupts :) */
600 atomic_inc(&itv->capturing);
604 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
606 u32 data[CX2341X_MBOX_MAX_DATA];
607 struct ivtv *itv = s->itv;
608 struct cx2341x_mpeg_params *p = &itv->params;
611 if (s->v4l2dev == NULL)
614 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
616 /* set audio mode to left/stereo for dual/stereo mode. */
617 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
619 /* set number of internal decoder buffers */
620 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
623 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
625 /* extract from user packets */
626 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
627 itv->vbi.dec_start = data[0];
629 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
630 itv->vbi.dec_start, data[1]);
632 /* set decoder source settings */
633 /* Data type: 0 = mpeg from host,
634 1 = yuv from encoder,
637 case IVTV_DEC_STREAM_TYPE_YUV:
638 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
639 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
641 case IVTV_DEC_STREAM_TYPE_MPG:
646 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
647 p->width, p->height, p->audio_properties)) {
648 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
653 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
655 struct ivtv *itv = s->itv;
657 if (s->v4l2dev == NULL)
660 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
661 return 0; /* already started */
663 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
665 ivtv_setup_v4l2_decode_stream(s);
667 /* set dma size to 65536 bytes */
668 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
670 /* Clear Streamoff */
671 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
673 /* Zero out decoder counters */
674 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
675 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
676 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
677 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
683 /* turn on notification of dual/stereo mode change */
684 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
687 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
689 /* Clear the following Interrupt mask bits for decoding */
690 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
691 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
693 /* you're live! sit back and await interrupts :) */
694 atomic_inc(&itv->decoding);
698 void ivtv_stop_all_captures(struct ivtv *itv)
702 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
703 struct ivtv_stream *s = &itv->streams[i];
705 if (s->v4l2dev == NULL)
707 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
708 ivtv_stop_v4l2_encode_stream(s, 0);
713 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
715 struct ivtv *itv = s->itv;
716 DECLARE_WAITQUEUE(wait, current);
720 if (s->v4l2dev == NULL)
723 /* This function assumes that you are allowed to stop the capture
724 and that we are actually capturing */
726 IVTV_DEBUG_INFO("Stop Capture\n");
728 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
730 if (atomic_read(&itv->capturing) == 0)
734 case IVTV_ENC_STREAM_TYPE_YUV:
737 case IVTV_ENC_STREAM_TYPE_PCM:
740 case IVTV_ENC_STREAM_TYPE_VBI:
743 case IVTV_ENC_STREAM_TYPE_MPG:
749 /* Stop Capture Mode */
750 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
757 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
758 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
760 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
761 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
762 /* only run these if we're shutting down the last cap */
763 unsigned long duration;
764 unsigned long then = jiffies;
766 add_wait_queue(&itv->eos_waitq, &wait);
768 set_current_state(TASK_INTERRUPTIBLE);
770 /* wait 2s for EOS interrupt */
771 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
773 then + msecs_to_jiffies(2000))) {
774 schedule_timeout(msecs_to_jiffies(10));
777 /* To convert jiffies to ms, we must multiply by 1000
778 * and divide by HZ. To avoid runtime division, we
779 * convert this to multiplication by 1000/HZ.
780 * Since integer division truncates, we get the best
781 * accuracy if we do a rounding calculation of the constant.
782 * Think of the case where HZ is 1024.
784 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
786 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
787 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
788 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
790 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
792 set_current_state(TASK_RUNNING);
793 remove_wait_queue(&itv->eos_waitq, &wait);
794 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
797 /* Handle any pending interrupts */
798 ivtv_msleep_timeout(100, 1);
801 atomic_dec(&itv->capturing);
803 /* Clear capture and no-read bits */
804 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
806 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
807 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
809 if (atomic_read(&itv->capturing) > 0) {
813 /* Set the following Interrupt mask bits for capture */
814 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
815 del_timer(&itv->dma_timer);
817 /* event notification (off) */
818 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
819 /* type: 0 = refresh */
820 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
821 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
822 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
830 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
832 struct ivtv *itv = s->itv;
834 if (s->v4l2dev == NULL)
837 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
840 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
843 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
846 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
849 /* Wait until the decoder is no longer running */
851 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
852 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
855 u32 data[CX2341X_MBOX_MAX_DATA];
856 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
857 if (s->q_full.buffers + s->q_dma.buffers == 0) {
862 if (ivtv_msleep_timeout(100, 1))
866 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
868 /* turn off notification of dual/stereo mode change */
869 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
871 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
872 del_timer(&itv->dma_timer);
874 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
875 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
876 ivtv_flush_queues(s);
878 /* decrement decoding */
879 atomic_dec(&itv->decoding);
881 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
882 wake_up(&itv->event_waitq);
884 /* wake up wait queues */
890 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
892 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
893 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
895 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
898 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
900 /* Prevent others from starting/stopping streams while we
901 initiate/terminate passthrough mode */
903 if (itv->output_mode == OUT_PASSTHROUGH) {
906 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
909 /* Fully initialize stream, and then unflag init */
910 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
911 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
913 /* Setup YUV Decoder */
914 ivtv_setup_v4l2_decode_stream(dec_stream);
917 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
918 atomic_inc(&itv->decoding);
920 /* Setup capture if not already done */
921 if (atomic_read(&itv->capturing) == 0) {
922 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
925 /* Start Passthrough Mode */
926 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
927 atomic_inc(&itv->capturing);
931 if (itv->output_mode != OUT_PASSTHROUGH)
934 /* Stop Passthrough Mode */
935 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
936 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
938 atomic_dec(&itv->capturing);
939 atomic_dec(&itv->decoding);
940 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
941 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
942 itv->output_mode = OUT_NONE;