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 "ivtv-firmware.h"
46 #include <media/v4l2-event.h>
48 static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
50 .read = ivtv_v4l2_read,
51 .write = ivtv_v4l2_write,
52 .open = ivtv_v4l2_open,
53 .unlocked_ioctl = ivtv_v4l2_ioctl,
54 .release = ivtv_v4l2_close,
55 .poll = ivtv_v4l2_enc_poll,
58 static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
60 .read = ivtv_v4l2_read,
61 .write = ivtv_v4l2_write,
62 .open = ivtv_v4l2_open,
63 .unlocked_ioctl = ivtv_v4l2_ioctl,
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 v4l2_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 *vdev = s->vdev;
144 /* we need to keep vdev, 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 num_offset = ivtv_stream_info[type].num_offset;
175 int num = itv->instance + ivtv_first_minor + num_offset;
177 /* These four fields are always initialized. If vdev == 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 /* User explicitly selected 0 buffers for these streams, so don't
193 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
194 itv->options.kilobytes[type] == 0) {
195 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
199 ivtv_stream_init(itv, type);
201 /* allocate and initialize the v4l2 video device structure */
202 s->vdev = video_device_alloc();
203 if (s->vdev == NULL) {
204 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
208 snprintf(s->vdev->name, sizeof(s->vdev->name), "%s %s",
209 itv->v4l2_dev.name, s->name);
212 s->vdev->v4l2_dev = &itv->v4l2_dev;
213 s->vdev->fops = ivtv_stream_info[type].fops;
214 s->vdev->release = video_device_release;
215 s->vdev->tvnorms = V4L2_STD_ALL;
216 ivtv_set_funcs(s->vdev);
220 /* Initialize v4l2 variables and prepare v4l2 devices */
221 int ivtv_streams_setup(struct ivtv *itv)
225 /* Setup V4L2 Devices */
226 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
228 if (ivtv_prep_dev(itv, type))
231 if (itv->streams[type].vdev == NULL)
234 /* Allocate Stream */
235 if (ivtv_stream_alloc(&itv->streams[type]))
238 if (type == IVTV_MAX_STREAMS)
241 /* One or more streams could not be initialized. Clean 'em all up. */
242 ivtv_streams_cleanup(itv, 0);
246 static int ivtv_reg_dev(struct ivtv *itv, int type)
248 struct ivtv_stream *s = &itv->streams[type];
249 int vfl_type = ivtv_stream_info[type].vfl_type;
257 /* card number + user defined offset + device offset */
258 if (type != IVTV_ENC_STREAM_TYPE_MPG) {
259 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
262 num = s_mpg->vdev->num + ivtv_stream_info[type].num_offset;
264 video_set_drvdata(s->vdev, s);
266 /* Register device. First try the desired minor, then any free one. */
267 if (video_register_device_no_warn(s->vdev, vfl_type, num)) {
268 IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
270 video_device_release(s->vdev);
274 name = video_device_node_name(s->vdev);
277 case VFL_TYPE_GRABBER:
278 IVTV_INFO("Registered device %s for %s (%d kB)\n",
279 name, s->name, itv->options.kilobytes[type]);
282 IVTV_INFO("Registered device %s for %s\n",
286 if (itv->options.kilobytes[type])
287 IVTV_INFO("Registered device %s for %s (%d kB)\n",
288 name, s->name, itv->options.kilobytes[type]);
290 IVTV_INFO("Registered device %s for %s\n",
297 /* Register v4l2 devices */
298 int ivtv_streams_register(struct ivtv *itv)
303 /* Register V4L2 devices */
304 for (type = 0; type < IVTV_MAX_STREAMS; type++)
305 err |= ivtv_reg_dev(itv, type);
310 /* One or more streams could not be initialized. Clean 'em all up. */
311 ivtv_streams_cleanup(itv, 1);
315 /* Unregister v4l2 devices */
316 void ivtv_streams_cleanup(struct ivtv *itv, int unregister)
320 /* Teardown all streams */
321 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
322 struct video_device *vdev = itv->streams[type].vdev;
324 itv->streams[type].vdev = NULL;
328 ivtv_stream_free(&itv->streams[type]);
329 /* Unregister or release device */
331 video_unregister_device(vdev);
333 video_device_release(vdev);
337 static void ivtv_vbi_setup(struct ivtv *itv)
339 int raw = ivtv_raw_vbi(itv);
340 u32 data[CX2341X_MBOX_MAX_DATA];
345 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
347 /* setup VBI registers */
349 v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi);
351 v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced);
353 /* determine number of lines and total number of VBI bytes.
354 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
355 The '- 1' byte is probably an unused U or V byte. Or something...
356 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
357 header, 42 data bytes + checksum (to be confirmed) */
359 lines = itv->vbi.count * 2;
361 lines = itv->is_60hz ? 24 : 38;
362 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
366 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
368 /* Note: sliced vs raw flag doesn't seem to have any effect
369 TODO: check mode (0x02) value with older ivtv versions. */
370 data[0] = raw | 0x02 | (0xbd << 8);
372 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
374 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
375 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
376 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
377 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
378 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
379 code. These values for raw VBI are obtained from a driver disassembly. The sliced
380 start/stop codes was deduced from this, but they do not appear in the driver.
381 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
382 However, I have no idea what these values are for. */
383 if (itv->hw_flags & IVTV_HW_CX25840) {
384 /* Setup VBI for the cx25840 digitizer */
386 data[3] = 0x20602060;
387 data[4] = 0x30703070;
389 data[3] = 0xB0F0B0F0;
390 data[4] = 0xA0E0A0E0;
392 /* Lines per frame */
395 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
397 /* Setup VBI for the saa7115 digitizer */
399 data[3] = 0x25256262;
400 data[4] = 0x387F7F7F;
402 data[3] = 0xABABECEC;
403 data[4] = 0xB6F1F1F1;
405 /* Lines per frame */
408 data[6] = itv->vbi.enc_size / lines;
412 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
413 data[0], data[1], data[2], data[5], data[6]);
415 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
417 /* returns the VBI encoder memory area. */
418 itv->vbi.enc_start = data[2];
419 itv->vbi.fpi = data[0];
423 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
424 itv->vbi.enc_start, data[1], itv->vbi.fpi);
427 Note that the sliced argument seems to have no effect. */
428 for (i = 2; i <= 24; i++) {
432 valid = i >= 10 && i < 22;
434 valid = i >= 6 && i < 24;
436 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
438 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
442 /* Remaining VBI questions:
443 - Is it possible to select particular VBI lines only for inclusion in the MPEG
444 stream? Currently you can only get the first X lines.
445 - Is mixed raw and sliced VBI possible?
446 - What's the meaning of the raw/sliced flag?
447 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
450 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
452 u32 data[CX2341X_MBOX_MAX_DATA];
453 struct ivtv *itv = s->itv;
454 struct cx2341x_mpeg_params *p = &itv->params;
455 int captype = 0, subtype = 0;
456 int enable_passthrough = 0;
461 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
464 case IVTV_ENC_STREAM_TYPE_MPG:
468 /* Stop Passthrough */
469 if (itv->output_mode == OUT_PASSTHROUGH) {
470 ivtv_passthrough_mode(itv, 0);
471 enable_passthrough = 1;
473 itv->mpg_data_received = itv->vbi_data_inserted = 0;
474 itv->dualwatch_jiffies = jiffies;
475 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
476 itv->search_pack_header = 0;
479 case IVTV_ENC_STREAM_TYPE_YUV:
480 if (itv->output_mode == OUT_PASSTHROUGH) {
482 subtype = 11; /* video+audio+decoder */
488 case IVTV_ENC_STREAM_TYPE_PCM:
492 case IVTV_ENC_STREAM_TYPE_VBI:
497 itv->vbi.inserted_frame = 0;
498 memset(itv->vbi.sliced_mpeg_size,
499 0, sizeof(itv->vbi.sliced_mpeg_size));
504 s->subtype = subtype;
505 s->buffers_stolen = 0;
507 /* Clear Streamoff flags in case left from last capture */
508 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
510 if (atomic_read(&itv->capturing) == 0) {
513 /* Always use frame based mode. Experiments have demonstrated that byte
514 stream based mode results in dropped frames and corruption. Not often,
515 but occasionally. Many thanks go to Leonard Orb who spent a lot of
516 effort and time trying to trace the cause of the drop outs. */
517 /* 1 frame per DMA */
518 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
519 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
521 /* Stuff from Windows, we don't know what it is */
522 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
523 /* According to the docs, this should be correct. However, this is
524 untested. I don't dare enable this without having tested it.
525 Only very few old cards actually have this hardware combination.
526 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
527 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
529 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
530 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
531 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
532 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
534 /* assign placeholder */
535 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
536 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
538 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
540 else if (itv->card->hw_all & IVTV_HW_SAA7114)
545 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
548 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
552 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
553 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
554 itv->pgm_info_offset = data[0];
555 itv->pgm_info_num = data[1];
556 itv->pgm_info_write_idx = 0;
557 itv->pgm_info_read_idx = 0;
559 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
560 itv->pgm_info_offset, itv->pgm_info_num);
562 /* Setup API for Stream */
563 cx2341x_update(itv, ivtv_api_func, NULL, p);
565 /* mute if capturing radio */
566 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
567 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
568 1 | (p->video_mute_yuv << 8));
572 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
573 /* event notification (on) */
574 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
575 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
578 if (atomic_read(&itv->capturing) == 0) {
579 /* Clear all Pending Interrupts */
580 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
582 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
584 /* Initialize Digitizer for Capture */
585 /* Avoid tinny audio problem - ensure audio clocks are going */
586 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
587 /* Avoid unpredictable PCI bus hang - disable video clocks */
588 v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
589 ivtv_msleep_timeout(300, 1);
590 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
591 v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
595 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
597 IVTV_DEBUG_WARN( "Error starting capture!\n");
601 /* Start Passthrough */
602 if (enable_passthrough) {
603 ivtv_passthrough_mode(itv, 1);
606 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
607 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
609 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
611 /* you're live! sit back and await interrupts :) */
612 atomic_inc(&itv->capturing);
616 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
618 u32 data[CX2341X_MBOX_MAX_DATA];
619 struct ivtv *itv = s->itv;
620 struct cx2341x_mpeg_params *p = &itv->params;
628 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
633 /* set audio mode to left/stereo for dual/stereo mode. */
634 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
636 /* set number of internal decoder buffers */
637 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
640 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
642 /* extract from user packets */
643 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
644 itv->vbi.dec_start = data[0];
646 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
647 itv->vbi.dec_start, data[1]);
649 /* set decoder source settings */
650 /* Data type: 0 = mpeg from host,
651 1 = yuv from encoder,
654 case IVTV_DEC_STREAM_TYPE_YUV:
655 if (itv->output_mode == OUT_PASSTHROUGH) {
658 /* Fake size to avoid switching video standard */
661 height = itv->is_out_50hz ? 576 : 480;
663 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
665 case IVTV_DEC_STREAM_TYPE_MPG:
670 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
671 width, height, p->audio_properties)) {
672 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
675 /* Decoder sometimes dies here, so wait a moment */
676 ivtv_msleep_timeout(10, 0);
678 /* Known failure point for firmware, so check */
679 if (ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream") < 0)
685 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
687 struct ivtv *itv = s->itv;
693 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
694 return 0; /* already started */
696 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
698 rc = ivtv_setup_v4l2_decode_stream(s);
700 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
704 /* set dma size to 65536 bytes */
705 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
707 /* Clear Streamoff */
708 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
710 /* Zero out decoder counters */
711 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
712 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
713 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
714 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
715 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
716 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
717 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
718 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
720 /* turn on notification of dual/stereo mode change */
721 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
724 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
726 /* Let things settle before we actually start */
727 ivtv_msleep_timeout(10, 0);
729 /* Clear the following Interrupt mask bits for decoding */
730 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
731 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
733 /* you're live! sit back and await interrupts :) */
734 atomic_inc(&itv->decoding);
738 void ivtv_stop_all_captures(struct ivtv *itv)
742 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
743 struct ivtv_stream *s = &itv->streams[i];
747 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
748 ivtv_stop_v4l2_encode_stream(s, 0);
753 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
755 struct ivtv *itv = s->itv;
756 DECLARE_WAITQUEUE(wait, current);
763 /* This function assumes that you are allowed to stop the capture
764 and that we are actually capturing */
766 IVTV_DEBUG_INFO("Stop Capture\n");
768 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
770 if (atomic_read(&itv->capturing) == 0)
774 case IVTV_ENC_STREAM_TYPE_YUV:
777 case IVTV_ENC_STREAM_TYPE_PCM:
780 case IVTV_ENC_STREAM_TYPE_VBI:
783 case IVTV_ENC_STREAM_TYPE_MPG:
789 /* Stop Capture Mode */
790 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
797 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
798 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
800 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
801 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
802 /* only run these if we're shutting down the last cap */
803 unsigned long duration;
804 unsigned long then = jiffies;
806 add_wait_queue(&itv->eos_waitq, &wait);
808 set_current_state(TASK_INTERRUPTIBLE);
810 /* wait 2s for EOS interrupt */
811 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
813 then + msecs_to_jiffies(2000))) {
814 schedule_timeout(msecs_to_jiffies(10));
817 /* To convert jiffies to ms, we must multiply by 1000
818 * and divide by HZ. To avoid runtime division, we
819 * convert this to multiplication by 1000/HZ.
820 * Since integer division truncates, we get the best
821 * accuracy if we do a rounding calculation of the constant.
822 * Think of the case where HZ is 1024.
824 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
826 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
827 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
828 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
830 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
832 set_current_state(TASK_RUNNING);
833 remove_wait_queue(&itv->eos_waitq, &wait);
834 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
837 /* Handle any pending interrupts */
838 ivtv_msleep_timeout(100, 1);
841 atomic_dec(&itv->capturing);
843 /* Clear capture and no-read bits */
844 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
846 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
847 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
849 if (atomic_read(&itv->capturing) > 0) {
853 /* Set the following Interrupt mask bits for capture */
854 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
855 del_timer(&itv->dma_timer);
857 /* event notification (off) */
858 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
859 /* type: 0 = refresh */
860 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
861 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
862 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
865 /* Raw-passthrough is implied on start. Make sure it's stopped so
866 the encoder will re-initialize when next started */
867 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
874 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
876 static const struct v4l2_event ev = {
877 .type = V4L2_EVENT_EOS,
879 struct ivtv *itv = s->itv;
884 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
887 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
890 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
893 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
896 /* Wait until the decoder is no longer running */
898 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
899 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
902 u32 data[CX2341X_MBOX_MAX_DATA];
903 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
904 if (s->q_full.buffers + s->q_dma.buffers == 0) {
909 if (ivtv_msleep_timeout(100, 1))
913 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
915 /* turn off notification of dual/stereo mode change */
916 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
918 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
919 del_timer(&itv->dma_timer);
921 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
922 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
923 ivtv_flush_queues(s);
925 /* decoder needs time to settle */
926 ivtv_msleep_timeout(40, 0);
928 /* decrement decoding */
929 atomic_dec(&itv->decoding);
931 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
932 wake_up(&itv->event_waitq);
933 v4l2_event_queue(s->vdev, &ev);
935 /* wake up wait queues */
941 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
943 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
944 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
946 if (yuv_stream->vdev == NULL || dec_stream->vdev == NULL)
949 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
951 /* Prevent others from starting/stopping streams while we
952 initiate/terminate passthrough mode */
954 if (itv->output_mode == OUT_PASSTHROUGH) {
957 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
960 /* Fully initialize stream, and then unflag init */
961 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
962 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
964 /* Setup YUV Decoder */
965 ivtv_setup_v4l2_decode_stream(dec_stream);
968 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
969 atomic_inc(&itv->decoding);
971 /* Setup capture if not already done */
972 if (atomic_read(&itv->capturing) == 0) {
973 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
976 /* Start Passthrough Mode */
977 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
978 atomic_inc(&itv->capturing);
982 if (itv->output_mode != OUT_PASSTHROUGH)
985 /* Stop Passthrough Mode */
986 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
987 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
989 atomic_dec(&itv->capturing);
990 atomic_dec(&itv->decoding);
991 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
992 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
993 itv->output_mode = OUT_NONE;