2 * cx18 init/start/stop/exit stream functions
4 * Derived from ivtv-streams.c
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
7 * Copyright (C) 2008 Andy Walls <awalls@radix.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
25 #include "cx18-driver.h"
27 #include "cx18-fileops.h"
28 #include "cx18-mailbox.h"
30 #include "cx18-queue.h"
31 #include "cx18-ioctl.h"
32 #include "cx18-streams.h"
33 #include "cx18-cards.h"
37 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C
39 static struct v4l2_file_operations cx18_v4l2_enc_fops = {
41 .read = cx18_v4l2_read,
42 .open = cx18_v4l2_open,
43 /* FIXME change to video_ioctl2 if serialization lock can be removed */
44 .ioctl = cx18_v4l2_ioctl,
45 .release = cx18_v4l2_close,
46 .poll = cx18_v4l2_enc_poll,
49 /* offset from 0 to register ts v4l2 minors on */
50 #define CX18_V4L2_ENC_TS_OFFSET 16
51 /* offset from 0 to register pcm v4l2 minors on */
52 #define CX18_V4L2_ENC_PCM_OFFSET 24
53 /* offset from 0 to register yuv v4l2 minors on */
54 #define CX18_V4L2_ENC_YUV_OFFSET 32
61 enum v4l2_buf_type buf_type;
62 } cx18_stream_info[] = {
63 { /* CX18_ENC_STREAM_TYPE_MPG */
66 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
68 { /* CX18_ENC_STREAM_TYPE_TS */
71 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
73 { /* CX18_ENC_STREAM_TYPE_YUV */
75 VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
76 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
78 { /* CX18_ENC_STREAM_TYPE_VBI */
81 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE,
83 { /* CX18_ENC_STREAM_TYPE_PCM */
85 VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
86 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE,
88 { /* CX18_ENC_STREAM_TYPE_IDX */
91 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
93 { /* CX18_ENC_STREAM_TYPE_RAD */
96 PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE,
100 static void cx18_stream_init(struct cx18 *cx, int type)
102 struct cx18_stream *s = &cx->streams[type];
103 struct video_device *video_dev = s->video_dev;
105 /* we need to keep video_dev, so restore it afterwards */
106 memset(s, 0, sizeof(*s));
107 s->video_dev = video_dev;
109 /* initialize cx18_stream fields */
112 s->name = cx18_stream_info[type].name;
113 s->handle = CX18_INVALID_TASK_HANDLE;
115 s->dma = cx18_stream_info[type].dma;
116 s->buffers = cx->stream_buffers[type];
117 s->buf_size = cx->stream_buf_size[type];
118 INIT_LIST_HEAD(&s->buf_pool);
120 s->mdl_size = s->buf_size * s->bufs_per_mdl;
122 init_waitqueue_head(&s->waitq);
124 spin_lock_init(&s->q_free.lock);
125 cx18_queue_init(&s->q_free);
126 spin_lock_init(&s->q_busy.lock);
127 cx18_queue_init(&s->q_busy);
128 spin_lock_init(&s->q_full.lock);
129 cx18_queue_init(&s->q_full);
130 spin_lock_init(&s->q_idle.lock);
131 cx18_queue_init(&s->q_idle);
133 INIT_WORK(&s->out_work_order, cx18_out_work_handler);
136 static int cx18_prep_dev(struct cx18 *cx, int type)
138 struct cx18_stream *s = &cx->streams[type];
139 u32 cap = cx->v4l2_cap;
140 int num_offset = cx18_stream_info[type].num_offset;
141 int num = cx->instance + cx18_first_minor + num_offset;
143 /* These four fields are always initialized. If video_dev == NULL, then
144 this stream is not in use. In that case no other fields but these
149 s->name = cx18_stream_info[type].name;
151 /* Check whether the radio is supported */
152 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
155 /* Check whether VBI is supported */
156 if (type == CX18_ENC_STREAM_TYPE_VBI &&
157 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
160 /* User explicitly selected 0 buffers for these streams, so don't
162 if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
163 cx->stream_buffers[type] == 0) {
164 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
168 cx18_stream_init(cx, type);
170 if (num_offset == -1)
173 /* allocate and initialize the v4l2 video device structure */
174 s->video_dev = video_device_alloc();
175 if (s->video_dev == NULL) {
176 CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
181 snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s",
182 cx->v4l2_dev.name, s->name);
184 s->video_dev->num = num;
185 s->video_dev->v4l2_dev = &cx->v4l2_dev;
186 s->video_dev->fops = &cx18_v4l2_enc_fops;
187 s->video_dev->release = video_device_release;
188 s->video_dev->tvnorms = V4L2_STD_ALL;
189 cx18_set_funcs(s->video_dev);
193 /* Initialize v4l2 variables and register v4l2 devices */
194 int cx18_streams_setup(struct cx18 *cx)
198 /* Setup V4L2 Devices */
199 for (type = 0; type < CX18_MAX_STREAMS; type++) {
201 ret = cx18_prep_dev(cx, type);
205 /* Allocate Stream */
206 ret = cx18_stream_alloc(&cx->streams[type]);
210 if (type == CX18_MAX_STREAMS)
213 /* One or more streams could not be initialized. Clean 'em all up. */
214 cx18_streams_cleanup(cx, 0);
218 static int cx18_reg_dev(struct cx18 *cx, int type)
220 struct cx18_stream *s = &cx->streams[type];
221 int vfl_type = cx18_stream_info[type].vfl_type;
225 /* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
226 * We need a VFL_TYPE_TS defined.
228 if (strcmp("TS", s->name) == 0) {
229 /* just return if no DVB is supported */
230 if ((cx->card->hw_all & CX18_HW_DVB) == 0)
232 ret = cx18_dvb_register(s);
234 CX18_ERR("DVB failed to register\n");
239 if (s->video_dev == NULL)
242 num = s->video_dev->num;
243 /* card number + user defined offset + device offset */
244 if (type != CX18_ENC_STREAM_TYPE_MPG) {
245 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
247 if (s_mpg->video_dev)
248 num = s_mpg->video_dev->num
249 + cx18_stream_info[type].num_offset;
251 video_set_drvdata(s->video_dev, s);
253 /* Register device. First try the desired minor, then any free one. */
254 ret = video_register_device_no_warn(s->video_dev, vfl_type, num);
256 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
258 video_device_release(s->video_dev);
263 name = video_device_node_name(s->video_dev);
266 case VFL_TYPE_GRABBER:
267 CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n",
268 name, s->name, cx->stream_buffers[type],
269 cx->stream_buf_size[type] / 1024,
270 (cx->stream_buf_size[type] * 100 / 1024) % 100);
274 CX18_INFO("Registered device %s for %s\n", name, s->name);
278 if (cx->stream_buffers[type])
279 CX18_INFO("Registered device %s for %s "
281 name, s->name, cx->stream_buffers[type],
282 cx->stream_buf_size[type]);
284 CX18_INFO("Registered device %s for %s\n",
292 /* Register v4l2 devices */
293 int cx18_streams_register(struct cx18 *cx)
299 /* Register V4L2 devices */
300 for (type = 0; type < CX18_MAX_STREAMS; type++) {
301 err = cx18_reg_dev(cx, type);
309 /* One or more streams could not be initialized. Clean 'em all up. */
310 cx18_streams_cleanup(cx, 1);
314 /* Unregister v4l2 devices */
315 void cx18_streams_cleanup(struct cx18 *cx, int unregister)
317 struct video_device *vdev;
320 /* Teardown all streams */
321 for (type = 0; type < CX18_MAX_STREAMS; type++) {
322 if (cx->streams[type].dvb.enabled) {
323 cx18_dvb_unregister(&cx->streams[type]);
324 cx->streams[type].dvb.enabled = false;
327 vdev = cx->streams[type].video_dev;
329 cx->streams[type].video_dev = NULL;
333 cx18_stream_free(&cx->streams[type]);
335 /* Unregister or release device */
337 video_unregister_device(vdev);
339 video_device_release(vdev);
343 static void cx18_vbi_setup(struct cx18_stream *s)
345 struct cx18 *cx = s->cx;
346 int raw = cx18_raw_vbi(cx);
347 u32 data[CX2341X_MBOX_MAX_DATA];
352 cx->vbi.start[0] = 10;
353 cx->vbi.start[1] = 273;
354 } else { /* PAL/SECAM */
356 cx->vbi.start[0] = 6;
357 cx->vbi.start[1] = 318;
360 /* setup VBI registers */
361 v4l2_subdev_call(cx->sd_av, video, s_fmt, &cx->vbi.in);
364 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
365 * VBI when the first analog capture channel starts, as once it starts
366 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup
367 * (i.e. for the VBI capture channels). We also send it for each
368 * analog capture channel anyway just to make sure we get the proper
372 lines = cx->vbi.count * 2;
375 * For 525/60 systems, according to the VIP 2 & BT.656 std:
376 * The EAV RP code's Field bit toggles on line 4, a few lines
377 * after the Vertcal Blank bit has already toggled.
378 * Tell the encoder to capture 21-4+1=18 lines per field,
379 * since we want lines 10 through 21.
381 * For 625/50 systems, according to the VIP 2 & BT.656 std:
382 * The EAV RP code's Field bit toggles on line 1, a few lines
383 * after the Vertcal Blank bit has already toggled.
384 * (We've actually set the digitizer so that the Field bit
385 * toggles on line 2.) Tell the encoder to capture 23-2+1=22
386 * lines per field, since we want lines 6 through 23.
388 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
392 /* Lines per field */
393 data[1] = (lines / 2) | ((lines / 2) << 16);
395 data[2] = (raw ? vbi_active_samples
396 : (cx->is_60hz ? vbi_hblank_samples_60Hz
397 : vbi_hblank_samples_50Hz));
398 /* Every X number of frames a VBI interrupt arrives
399 (frames as in 25 or 30 fps) */
402 * Set the SAV/EAV RP codes to look for as start/stop points
403 * when in VIP-1.1 mode
407 * Start codes for beginning of "active" line in vertical blank
408 * 0x20 ( VerticalBlank )
409 * 0x60 ( EvenField VerticalBlank )
411 data[4] = 0x20602060;
413 * End codes for end of "active" raw lines and regular lines
414 * 0x30 ( VerticalBlank HorizontalBlank)
415 * 0x70 ( EvenField VerticalBlank HorizontalBlank)
416 * 0x90 (Task HorizontalBlank)
417 * 0xd0 (Task EvenField HorizontalBlank)
419 data[5] = 0x307090d0;
422 * End codes for active video, we want data in the hblank region
423 * 0xb0 (Task 0 VerticalBlank HorizontalBlank)
424 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
426 * Since the V bit is only allowed to toggle in the EAV RP code,
427 * just before the first active region line, these two
429 * 0x90 (Task HorizontalBlank)
430 * 0xd0 (Task EvenField HorizontalBlank)
432 * We have set the digitzer such that we don't have to worry
433 * about these problem codes.
435 data[4] = 0xB0F0B0F0;
437 * Start codes for beginning of active line in vertical blank
438 * 0xa0 (Task VerticalBlank )
439 * 0xe0 (Task EvenField VerticalBlank )
441 data[5] = 0xA0E0A0E0;
444 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
445 data[0], data[1], data[2], data[3], data[4], data[5]);
447 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
451 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
452 struct cx18_mdl *mdl)
454 struct cx18 *cx = s->cx;
455 struct cx18_queue *q;
457 /* Don't give it to the firmware, if we're not running a capture */
458 if (s->handle == CX18_INVALID_TASK_HANDLE ||
459 test_bit(CX18_F_S_STOPPING, &s->s_flags) ||
460 !test_bit(CX18_F_S_STREAMING, &s->s_flags))
461 return cx18_enqueue(s, mdl, &s->q_free);
463 q = cx18_enqueue(s, mdl, &s->q_busy);
465 return q; /* The firmware has the max MDLs it can handle */
467 cx18_mdl_sync_for_device(s, mdl);
468 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
469 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
470 s->bufs_per_mdl, mdl->id, s->mdl_size);
475 void _cx18_stream_load_fw_queue(struct cx18_stream *s)
477 struct cx18_queue *q;
478 struct cx18_mdl *mdl;
480 if (atomic_read(&s->q_free.depth) == 0 ||
481 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
484 /* Move from q_free to q_busy notifying the firmware, until the limit */
486 mdl = cx18_dequeue(s, &s->q_free);
489 q = _cx18_stream_put_mdl_fw(s, mdl);
490 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
494 void cx18_out_work_handler(struct work_struct *work)
496 struct cx18_stream *s =
497 container_of(work, struct cx18_stream, out_work_order);
499 _cx18_stream_load_fw_queue(s);
502 static void cx18_stream_configure_mdls(struct cx18_stream *s)
504 cx18_unload_queues(s);
507 case CX18_ENC_STREAM_TYPE_YUV:
509 * Height should be a multiple of 32 lines.
510 * Set the MDL size to the exact size needed for one frame.
511 * Use enough buffers per MDL to cover the MDL size
513 s->mdl_size = 720 * s->cx->params.height * 3 / 2;
514 s->bufs_per_mdl = s->mdl_size / s->buf_size;
515 if (s->mdl_size % s->buf_size)
518 case CX18_ENC_STREAM_TYPE_VBI:
520 if (cx18_raw_vbi(s->cx)) {
521 s->mdl_size = (s->cx->is_60hz ? 12 : 18)
522 * 2 * vbi_active_samples;
525 * See comment in cx18_vbi_setup() below about the
526 * extra lines we capture in sliced VBI mode due to
527 * the lines on which EAV RP codes toggle.
529 s->mdl_size = s->cx->is_60hz
530 ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
531 : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
536 s->mdl_size = s->buf_size * s->bufs_per_mdl;
543 int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
545 u32 data[MAX_MB_ARGUMENTS];
546 struct cx18 *cx = s->cx;
548 struct cx18_api_func_private priv;
550 if (s->video_dev == NULL && s->dvb.enabled == 0)
553 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
556 case CX18_ENC_STREAM_TYPE_MPG:
557 captype = CAPTURE_CHANNEL_TYPE_MPEG;
558 cx->mpg_data_received = cx->vbi_data_inserted = 0;
559 cx->dualwatch_jiffies = jiffies;
560 cx->dualwatch_stereo_mode = cx->params.audio_properties & 0x300;
561 cx->search_pack_header = 0;
564 case CX18_ENC_STREAM_TYPE_TS:
565 captype = CAPTURE_CHANNEL_TYPE_TS;
567 case CX18_ENC_STREAM_TYPE_YUV:
568 captype = CAPTURE_CHANNEL_TYPE_YUV;
570 case CX18_ENC_STREAM_TYPE_PCM:
571 captype = CAPTURE_CHANNEL_TYPE_PCM;
573 case CX18_ENC_STREAM_TYPE_VBI:
574 #ifdef CX18_ENCODER_PARSES_SLICED
575 captype = cx18_raw_vbi(cx) ?
576 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
579 * Currently we set things up so that Sliced VBI from the
580 * digitizer is handled as Raw VBI by the encoder
582 captype = CAPTURE_CHANNEL_TYPE_VBI;
585 cx->vbi.inserted_frame = 0;
586 memset(cx->vbi.sliced_mpeg_size,
587 0, sizeof(cx->vbi.sliced_mpeg_size));
593 /* Clear Streamoff flags in case left from last capture */
594 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
596 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
598 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
601 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and
602 * set up all the parameters, as it is not obvious which parameters the
603 * firmware shares across capture channel types and which it does not.
605 * Some of the cx18_vapi() calls below apply to only certain capture
606 * channel types. We're hoping there's no harm in calling most of them
607 * anyway, as long as the values are all consistent. Setting some
608 * shared parameters will have no effect once an analog capture channel
609 * has started streaming.
611 if (captype != CAPTURE_CHANNEL_TYPE_TS) {
612 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
613 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
614 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
615 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
618 * Audio related reset according to
619 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
621 if (atomic_read(&cx->ana_capturing) == 0)
622 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
626 * Number of lines for Field 1 & Field 2 according to
627 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
628 * Field 1 is 312 for 625 line systems in BT.656
629 * Field 2 is 313 for 625 line systems in BT.656
631 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
632 s->handle, 312, 313);
634 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
638 * assign program index info.
639 * Mask 7: select I/P/B, Num_req: 400 max
640 * FIXME - currently we have this hardcoded as disabled
642 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0);
644 /* Call out to the common CX2341x API setup for user controls */
647 cx2341x_update(&priv, cx18_api_func, NULL, &cx->params);
650 * When starting a capture and we're set for radio,
651 * ensure the video is muted, despite the user control.
653 if (!cx->params.video_mute &&
654 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
655 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
656 (cx->params.video_mute_yuv << 8) | 1);
659 if (atomic_read(&cx->tot_capturing) == 0) {
660 clear_bit(CX18_F_I_EOS, &cx->i_flags);
661 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
664 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
665 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
666 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
668 /* Init all the cpu_mdls for this stream */
669 cx18_stream_configure_mdls(s);
670 _cx18_stream_load_fw_queue(s);
673 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
674 CX18_DEBUG_WARN("Error starting capture!\n");
675 /* Ensure we're really not capturing before releasing MDLs */
676 set_bit(CX18_F_S_STOPPING, &s->s_flags);
677 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
678 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
680 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
681 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
682 /* FIXME - CX18_F_S_STREAMOFF as well? */
683 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
684 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
685 s->handle = CX18_INVALID_TASK_HANDLE;
686 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
687 if (atomic_read(&cx->tot_capturing) == 0) {
688 set_bit(CX18_F_I_EOS, &cx->i_flags);
689 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
694 /* you're live! sit back and await interrupts :) */
695 if (captype != CAPTURE_CHANNEL_TYPE_TS)
696 atomic_inc(&cx->ana_capturing);
697 atomic_inc(&cx->tot_capturing);
701 void cx18_stop_all_captures(struct cx18 *cx)
705 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
706 struct cx18_stream *s = &cx->streams[i];
708 if (s->video_dev == NULL && s->dvb.enabled == 0)
710 if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
711 cx18_stop_v4l2_encode_stream(s, 0);
715 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
717 struct cx18 *cx = s->cx;
720 if (s->video_dev == NULL && s->dvb.enabled == 0)
723 /* This function assumes that you are allowed to stop the capture
724 and that we are actually capturing */
726 CX18_DEBUG_INFO("Stop Capture\n");
728 if (atomic_read(&cx->tot_capturing) == 0)
731 set_bit(CX18_F_S_STOPPING, &s->s_flags);
732 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
733 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
735 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
739 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
740 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
743 if (s->type != CX18_ENC_STREAM_TYPE_TS)
744 atomic_dec(&cx->ana_capturing);
745 atomic_dec(&cx->tot_capturing);
747 /* Clear capture and no-read bits */
748 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
750 /* Tell the CX23418 it can't use our buffers anymore */
751 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
753 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
754 s->handle = CX18_INVALID_TASK_HANDLE;
755 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
757 if (atomic_read(&cx->tot_capturing) > 0)
760 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
766 u32 cx18_find_handle(struct cx18 *cx)
770 /* find first available handle to be used for global settings */
771 for (i = 0; i < CX18_MAX_STREAMS; i++) {
772 struct cx18_stream *s = &cx->streams[i];
774 if (s->video_dev && (s->handle != CX18_INVALID_TASK_HANDLE))
777 return CX18_INVALID_TASK_HANDLE;
780 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
783 struct cx18_stream *s;
785 if (handle == CX18_INVALID_TASK_HANDLE)
788 for (i = 0; i < CX18_MAX_STREAMS; i++) {
790 if (s->handle != handle)
792 if (s->video_dev || s->dvb.enabled)