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@md.metrocast.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 .unlocked_ioctl = video_ioctl2,
44 .release = cx18_v4l2_close,
45 .poll = cx18_v4l2_enc_poll,
46 .mmap = cx18_v4l2_mmap,
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
62 } cx18_stream_info[] = {
63 { /* CX18_ENC_STREAM_TYPE_MPG */
67 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
68 V4L2_CAP_AUDIO | V4L2_CAP_TUNER
70 { /* CX18_ENC_STREAM_TYPE_TS */
75 { /* CX18_ENC_STREAM_TYPE_YUV */
77 VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
79 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
80 V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER
82 { /* CX18_ENC_STREAM_TYPE_VBI */
86 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE |
87 V4L2_CAP_READWRITE | V4L2_CAP_TUNER
89 { /* CX18_ENC_STREAM_TYPE_PCM */
91 VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
94 { /* CX18_ENC_STREAM_TYPE_IDX */
99 { /* CX18_ENC_STREAM_TYPE_RAD */
103 V4L2_CAP_RADIO | V4L2_CAP_TUNER
108 static void cx18_dma_free(struct videobuf_queue *q,
109 struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
111 videobuf_waiton(q, &buf->vb, 0, 0);
112 videobuf_vmalloc_free(&buf->vb);
113 buf->vb.state = VIDEOBUF_NEEDS_INIT;
116 static int cx18_prepare_buffer(struct videobuf_queue *q,
117 struct cx18_stream *s,
118 struct cx18_videobuf_buffer *buf,
120 unsigned int width, unsigned int height,
121 enum v4l2_field field)
123 struct cx18 *cx = s->cx;
129 if ((width < 48) || (height < 32))
132 buf->vb.size = (width * height * 2);
133 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
136 /* alloc + fill struct (if changed) */
137 if (buf->vb.width != width || buf->vb.height != height ||
138 buf->vb.field != field || s->pixelformat != pixelformat ||
139 buf->tvnorm != cx->std) {
141 buf->vb.width = width;
142 buf->vb.height = height;
143 buf->vb.field = field;
144 buf->tvnorm = cx->std;
145 s->pixelformat = pixelformat;
147 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
148 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
149 if (s->pixelformat == V4L2_PIX_FMT_HM12)
150 s->vb_bytes_per_frame = height * 720 * 3 / 2;
152 s->vb_bytes_per_frame = height * 720 * 2;
153 cx18_dma_free(q, s, buf);
156 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
159 if (buf->vb.field == 0)
160 buf->vb.field = V4L2_FIELD_INTERLACED;
162 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
163 buf->vb.width = width;
164 buf->vb.height = height;
165 buf->vb.field = field;
166 buf->tvnorm = cx->std;
167 s->pixelformat = pixelformat;
169 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
170 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
171 if (s->pixelformat == V4L2_PIX_FMT_HM12)
172 s->vb_bytes_per_frame = height * 720 * 3 / 2;
174 s->vb_bytes_per_frame = height * 720 * 2;
175 rc = videobuf_iolock(q, &buf->vb, NULL);
179 buf->vb.state = VIDEOBUF_PREPARED;
183 cx18_dma_free(q, s, buf);
188 /* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576)
189 1440 is a single line of 4:2:2 YUV at 720 luma samples wide
191 #define VB_MIN_BUFFERS 32
192 #define VB_MIN_BUFSIZE 4147200
194 static int buffer_setup(struct videobuf_queue *q,
195 unsigned int *count, unsigned int *size)
197 struct cx18_stream *s = q->priv_data;
198 struct cx18 *cx = s->cx;
200 *size = 2 * cx->cxhdl.width * cx->cxhdl.height;
202 *count = VB_MIN_BUFFERS;
204 while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
207 q->field = V4L2_FIELD_INTERLACED;
208 q->last = V4L2_FIELD_INTERLACED;
213 static int buffer_prepare(struct videobuf_queue *q,
214 struct videobuf_buffer *vb,
215 enum v4l2_field field)
217 struct cx18_videobuf_buffer *buf =
218 container_of(vb, struct cx18_videobuf_buffer, vb);
219 struct cx18_stream *s = q->priv_data;
220 struct cx18 *cx = s->cx;
222 return cx18_prepare_buffer(q, s, buf, s->pixelformat,
223 cx->cxhdl.width, cx->cxhdl.height, field);
226 static void buffer_release(struct videobuf_queue *q,
227 struct videobuf_buffer *vb)
229 struct cx18_videobuf_buffer *buf =
230 container_of(vb, struct cx18_videobuf_buffer, vb);
231 struct cx18_stream *s = q->priv_data;
233 cx18_dma_free(q, s, buf);
236 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
238 struct cx18_videobuf_buffer *buf =
239 container_of(vb, struct cx18_videobuf_buffer, vb);
240 struct cx18_stream *s = q->priv_data;
242 buf->vb.state = VIDEOBUF_QUEUED;
244 list_add_tail(&buf->vb.queue, &s->vb_capture);
247 static struct videobuf_queue_ops cx18_videobuf_qops = {
248 .buf_setup = buffer_setup,
249 .buf_prepare = buffer_prepare,
250 .buf_queue = buffer_queue,
251 .buf_release = buffer_release,
254 static void cx18_stream_init(struct cx18 *cx, int type)
256 struct cx18_stream *s = &cx->streams[type];
258 memset(s, 0, sizeof(*s));
260 /* initialize cx18_stream fields */
264 s->name = cx18_stream_info[type].name;
265 s->handle = CX18_INVALID_TASK_HANDLE;
267 s->dma = cx18_stream_info[type].dma;
268 s->v4l2_dev_caps = cx18_stream_info[type].caps;
269 s->buffers = cx->stream_buffers[type];
270 s->buf_size = cx->stream_buf_size[type];
271 INIT_LIST_HEAD(&s->buf_pool);
273 s->mdl_size = s->buf_size * s->bufs_per_mdl;
275 init_waitqueue_head(&s->waitq);
277 spin_lock_init(&s->q_free.lock);
278 cx18_queue_init(&s->q_free);
279 spin_lock_init(&s->q_busy.lock);
280 cx18_queue_init(&s->q_busy);
281 spin_lock_init(&s->q_full.lock);
282 cx18_queue_init(&s->q_full);
283 spin_lock_init(&s->q_idle.lock);
284 cx18_queue_init(&s->q_idle);
286 INIT_WORK(&s->out_work_order, cx18_out_work_handler);
288 INIT_LIST_HEAD(&s->vb_capture);
289 s->vb_timeout.function = cx18_vb_timeout;
290 s->vb_timeout.data = (unsigned long)s;
291 init_timer(&s->vb_timeout);
292 spin_lock_init(&s->vb_lock);
293 if (type == CX18_ENC_STREAM_TYPE_YUV) {
294 spin_lock_init(&s->vbuf_q_lock);
296 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
297 videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops,
298 &cx->pci_dev->dev, &s->vbuf_q_lock,
299 V4L2_BUF_TYPE_VIDEO_CAPTURE,
300 V4L2_FIELD_INTERLACED,
301 sizeof(struct cx18_videobuf_buffer),
302 s, &cx->serialize_lock);
304 /* Assume the previous pixel default */
305 s->pixelformat = V4L2_PIX_FMT_HM12;
306 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2;
307 s->vb_bytes_per_line = 720;
311 static int cx18_prep_dev(struct cx18 *cx, int type)
313 struct cx18_stream *s = &cx->streams[type];
314 u32 cap = cx->v4l2_cap;
315 int num_offset = cx18_stream_info[type].num_offset;
316 int num = cx->instance + cx18_first_minor + num_offset;
319 * These five fields are always initialized.
320 * For analog capture related streams, if video_dev.v4l2_dev == NULL then the
321 * stream is not in use.
322 * For the TS stream, if dvb == NULL then the stream is not in use.
323 * In those cases no other fields but these four can be used.
325 s->video_dev.v4l2_dev = NULL;
329 s->name = cx18_stream_info[type].name;
331 /* Check whether the radio is supported */
332 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
335 /* Check whether VBI is supported */
336 if (type == CX18_ENC_STREAM_TYPE_VBI &&
337 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
340 /* User explicitly selected 0 buffers for these streams, so don't
342 if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
343 cx->stream_buffers[type] == 0) {
344 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
348 cx18_stream_init(cx, type);
350 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */
351 if (type == CX18_ENC_STREAM_TYPE_TS) {
352 if (cx->card->hw_all & CX18_HW_DVB) {
353 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
354 if (s->dvb == NULL) {
355 CX18_ERR("Couldn't allocate cx18_dvb structure"
356 " for %s\n", s->name);
360 /* Don't need buffers for the TS, if there is no DVB */
365 if (num_offset == -1)
368 /* initialize the v4l2 video device structure */
369 snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s",
370 cx->v4l2_dev.name, s->name);
372 s->video_dev.num = num;
373 s->video_dev.v4l2_dev = &cx->v4l2_dev;
374 s->video_dev.fops = &cx18_v4l2_enc_fops;
375 s->video_dev.release = video_device_release_empty;
376 if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER)
377 s->video_dev.tvnorms = cx->tuner_std;
379 s->video_dev.tvnorms = V4L2_STD_ALL;
380 s->video_dev.lock = &cx->serialize_lock;
381 cx18_set_funcs(&s->video_dev);
385 /* Initialize v4l2 variables and register v4l2 devices */
386 int cx18_streams_setup(struct cx18 *cx)
390 /* Setup V4L2 Devices */
391 for (type = 0; type < CX18_MAX_STREAMS; type++) {
393 ret = cx18_prep_dev(cx, type);
397 /* Allocate Stream */
398 ret = cx18_stream_alloc(&cx->streams[type]);
402 if (type == CX18_MAX_STREAMS)
405 /* One or more streams could not be initialized. Clean 'em all up. */
406 cx18_streams_cleanup(cx, 0);
410 static int cx18_reg_dev(struct cx18 *cx, int type)
412 struct cx18_stream *s = &cx->streams[type];
413 int vfl_type = cx18_stream_info[type].vfl_type;
417 if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) {
418 ret = cx18_dvb_register(s);
420 CX18_ERR("DVB failed to register\n");
425 if (s->video_dev.v4l2_dev == NULL)
428 num = s->video_dev.num;
429 /* card number + user defined offset + device offset */
430 if (type != CX18_ENC_STREAM_TYPE_MPG) {
431 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
433 if (s_mpg->video_dev.v4l2_dev)
434 num = s_mpg->video_dev.num
435 + cx18_stream_info[type].num_offset;
437 video_set_drvdata(&s->video_dev, s);
439 /* Register device. First try the desired minor, then any free one. */
440 ret = video_register_device_no_warn(&s->video_dev, vfl_type, num);
442 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
444 s->video_dev.v4l2_dev = NULL;
448 name = video_device_node_name(&s->video_dev);
451 case VFL_TYPE_GRABBER:
452 CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n",
453 name, s->name, cx->stream_buffers[type],
454 cx->stream_buf_size[type] / 1024,
455 (cx->stream_buf_size[type] * 100 / 1024) % 100);
459 CX18_INFO("Registered device %s for %s\n", name, s->name);
463 if (cx->stream_buffers[type])
464 CX18_INFO("Registered device %s for %s "
466 name, s->name, cx->stream_buffers[type],
467 cx->stream_buf_size[type]);
469 CX18_INFO("Registered device %s for %s\n",
477 /* Register v4l2 devices */
478 int cx18_streams_register(struct cx18 *cx)
484 /* Register V4L2 devices */
485 for (type = 0; type < CX18_MAX_STREAMS; type++) {
486 err = cx18_reg_dev(cx, type);
494 /* One or more streams could not be initialized. Clean 'em all up. */
495 cx18_streams_cleanup(cx, 1);
499 /* Unregister v4l2 devices */
500 void cx18_streams_cleanup(struct cx18 *cx, int unregister)
502 struct video_device *vdev;
505 /* Teardown all streams */
506 for (type = 0; type < CX18_MAX_STREAMS; type++) {
508 /* The TS has a cx18_dvb structure, not a video_device */
509 if (type == CX18_ENC_STREAM_TYPE_TS) {
510 if (cx->streams[type].dvb != NULL) {
512 cx18_dvb_unregister(&cx->streams[type]);
513 kfree(cx->streams[type].dvb);
514 cx->streams[type].dvb = NULL;
515 cx18_stream_free(&cx->streams[type]);
520 /* No struct video_device, but can have buffers allocated */
521 if (type == CX18_ENC_STREAM_TYPE_IDX) {
522 /* If the module params didn't inhibit IDX ... */
523 if (cx->stream_buffers[type] != 0) {
524 cx->stream_buffers[type] = 0;
526 * Before calling cx18_stream_free(),
527 * check if the IDX stream was actually set up.
528 * Needed, since the cx18_probe() error path
529 * exits through here as well as normal clean up
531 if (cx->streams[type].buffers != 0)
532 cx18_stream_free(&cx->streams[type]);
537 /* If struct video_device exists, can have buffers allocated */
538 vdev = &cx->streams[type].video_dev;
540 if (vdev->v4l2_dev == NULL)
543 if (type == CX18_ENC_STREAM_TYPE_YUV)
544 videobuf_mmap_free(&cx->streams[type].vbuf_q);
546 cx18_stream_free(&cx->streams[type]);
548 video_unregister_device(vdev);
552 static void cx18_vbi_setup(struct cx18_stream *s)
554 struct cx18 *cx = s->cx;
555 int raw = cx18_raw_vbi(cx);
556 u32 data[CX2341X_MBOX_MAX_DATA];
561 cx->vbi.start[0] = 10;
562 cx->vbi.start[1] = 273;
563 } else { /* PAL/SECAM */
565 cx->vbi.start[0] = 6;
566 cx->vbi.start[1] = 318;
569 /* setup VBI registers */
571 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi);
573 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced);
576 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
577 * VBI when the first analog capture channel starts, as once it starts
578 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup
579 * (i.e. for the VBI capture channels). We also send it for each
580 * analog capture channel anyway just to make sure we get the proper
584 lines = cx->vbi.count * 2;
587 * For 525/60 systems, according to the VIP 2 & BT.656 std:
588 * The EAV RP code's Field bit toggles on line 4, a few lines
589 * after the Vertcal Blank bit has already toggled.
590 * Tell the encoder to capture 21-4+1=18 lines per field,
591 * since we want lines 10 through 21.
593 * For 625/50 systems, according to the VIP 2 & BT.656 std:
594 * The EAV RP code's Field bit toggles on line 1, a few lines
595 * after the Vertcal Blank bit has already toggled.
596 * (We've actually set the digitizer so that the Field bit
597 * toggles on line 2.) Tell the encoder to capture 23-2+1=22
598 * lines per field, since we want lines 6 through 23.
600 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
604 /* Lines per field */
605 data[1] = (lines / 2) | ((lines / 2) << 16);
607 data[2] = (raw ? vbi_active_samples
608 : (cx->is_60hz ? vbi_hblank_samples_60Hz
609 : vbi_hblank_samples_50Hz));
610 /* Every X number of frames a VBI interrupt arrives
611 (frames as in 25 or 30 fps) */
614 * Set the SAV/EAV RP codes to look for as start/stop points
615 * when in VIP-1.1 mode
619 * Start codes for beginning of "active" line in vertical blank
620 * 0x20 ( VerticalBlank )
621 * 0x60 ( EvenField VerticalBlank )
623 data[4] = 0x20602060;
625 * End codes for end of "active" raw lines and regular lines
626 * 0x30 ( VerticalBlank HorizontalBlank)
627 * 0x70 ( EvenField VerticalBlank HorizontalBlank)
628 * 0x90 (Task HorizontalBlank)
629 * 0xd0 (Task EvenField HorizontalBlank)
631 data[5] = 0x307090d0;
634 * End codes for active video, we want data in the hblank region
635 * 0xb0 (Task 0 VerticalBlank HorizontalBlank)
636 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
638 * Since the V bit is only allowed to toggle in the EAV RP code,
639 * just before the first active region line, these two
641 * 0x90 (Task HorizontalBlank)
642 * 0xd0 (Task EvenField HorizontalBlank)
644 * We have set the digitzer such that we don't have to worry
645 * about these problem codes.
647 data[4] = 0xB0F0B0F0;
649 * Start codes for beginning of active line in vertical blank
650 * 0xa0 (Task VerticalBlank )
651 * 0xe0 (Task EvenField VerticalBlank )
653 data[5] = 0xA0E0A0E0;
656 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
657 data[0], data[1], data[2], data[3], data[4], data[5]);
659 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
662 void cx18_stream_rotate_idx_mdls(struct cx18 *cx)
664 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
665 struct cx18_mdl *mdl;
667 if (!cx18_stream_enabled(s))
670 /* Return if the firmware is not running low on MDLs */
671 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >=
672 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN)
675 /* Return if there are no MDLs to rotate back to the firmware */
676 if (atomic_read(&s->q_full.depth) < 2)
680 * Take the oldest IDX MDL still holding data, and discard its index
681 * entries by scheduling the MDL to go back to the firmware
683 mdl = cx18_dequeue(s, &s->q_full);
685 cx18_enqueue(s, mdl, &s->q_free);
689 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
690 struct cx18_mdl *mdl)
692 struct cx18 *cx = s->cx;
693 struct cx18_queue *q;
695 /* Don't give it to the firmware, if we're not running a capture */
696 if (s->handle == CX18_INVALID_TASK_HANDLE ||
697 test_bit(CX18_F_S_STOPPING, &s->s_flags) ||
698 !test_bit(CX18_F_S_STREAMING, &s->s_flags))
699 return cx18_enqueue(s, mdl, &s->q_free);
701 q = cx18_enqueue(s, mdl, &s->q_busy);
703 return q; /* The firmware has the max MDLs it can handle */
705 cx18_mdl_sync_for_device(s, mdl);
706 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
707 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
708 s->bufs_per_mdl, mdl->id, s->mdl_size);
713 void _cx18_stream_load_fw_queue(struct cx18_stream *s)
715 struct cx18_queue *q;
716 struct cx18_mdl *mdl;
718 if (atomic_read(&s->q_free.depth) == 0 ||
719 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
722 /* Move from q_free to q_busy notifying the firmware, until the limit */
724 mdl = cx18_dequeue(s, &s->q_free);
727 q = _cx18_stream_put_mdl_fw(s, mdl);
728 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
732 void cx18_out_work_handler(struct work_struct *work)
734 struct cx18_stream *s =
735 container_of(work, struct cx18_stream, out_work_order);
737 _cx18_stream_load_fw_queue(s);
740 static void cx18_stream_configure_mdls(struct cx18_stream *s)
742 cx18_unload_queues(s);
745 case CX18_ENC_STREAM_TYPE_YUV:
747 * Height should be a multiple of 32 lines.
748 * Set the MDL size to the exact size needed for one frame.
749 * Use enough buffers per MDL to cover the MDL size
751 if (s->pixelformat == V4L2_PIX_FMT_HM12)
752 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
754 s->mdl_size = 720 * s->cx->cxhdl.height * 2;
755 s->bufs_per_mdl = s->mdl_size / s->buf_size;
756 if (s->mdl_size % s->buf_size)
759 case CX18_ENC_STREAM_TYPE_VBI:
761 if (cx18_raw_vbi(s->cx)) {
762 s->mdl_size = (s->cx->is_60hz ? 12 : 18)
763 * 2 * vbi_active_samples;
766 * See comment in cx18_vbi_setup() below about the
767 * extra lines we capture in sliced VBI mode due to
768 * the lines on which EAV RP codes toggle.
770 s->mdl_size = s->cx->is_60hz
771 ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
772 : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
777 s->mdl_size = s->buf_size * s->bufs_per_mdl;
784 int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
786 u32 data[MAX_MB_ARGUMENTS];
787 struct cx18 *cx = s->cx;
789 struct cx18_stream *s_idx;
791 if (!cx18_stream_enabled(s))
794 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
797 case CX18_ENC_STREAM_TYPE_MPG:
798 captype = CAPTURE_CHANNEL_TYPE_MPEG;
799 cx->mpg_data_received = cx->vbi_data_inserted = 0;
800 cx->dualwatch_jiffies = jiffies;
801 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode);
802 cx->search_pack_header = 0;
805 case CX18_ENC_STREAM_TYPE_IDX:
806 captype = CAPTURE_CHANNEL_TYPE_INDEX;
808 case CX18_ENC_STREAM_TYPE_TS:
809 captype = CAPTURE_CHANNEL_TYPE_TS;
811 case CX18_ENC_STREAM_TYPE_YUV:
812 captype = CAPTURE_CHANNEL_TYPE_YUV;
814 case CX18_ENC_STREAM_TYPE_PCM:
815 captype = CAPTURE_CHANNEL_TYPE_PCM;
817 case CX18_ENC_STREAM_TYPE_VBI:
818 #ifdef CX18_ENCODER_PARSES_SLICED
819 captype = cx18_raw_vbi(cx) ?
820 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
823 * Currently we set things up so that Sliced VBI from the
824 * digitizer is handled as Raw VBI by the encoder
826 captype = CAPTURE_CHANNEL_TYPE_VBI;
829 cx->vbi.inserted_frame = 0;
830 memset(cx->vbi.sliced_mpeg_size,
831 0, sizeof(cx->vbi.sliced_mpeg_size));
837 /* Clear Streamoff flags in case left from last capture */
838 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
840 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
842 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
845 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and
846 * set up all the parameters, as it is not obvious which parameters the
847 * firmware shares across capture channel types and which it does not.
849 * Some of the cx18_vapi() calls below apply to only certain capture
850 * channel types. We're hoping there's no harm in calling most of them
851 * anyway, as long as the values are all consistent. Setting some
852 * shared parameters will have no effect once an analog capture channel
853 * has started streaming.
855 if (captype != CAPTURE_CHANNEL_TYPE_TS) {
856 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
857 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
858 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
859 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
862 * Audio related reset according to
863 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
865 if (atomic_read(&cx->ana_capturing) == 0)
866 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
870 * Number of lines for Field 1 & Field 2 according to
871 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
872 * Field 1 is 312 for 625 line systems in BT.656
873 * Field 2 is 313 for 625 line systems in BT.656
875 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
876 s->handle, 312, 313);
878 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
882 * Select to receive I, P, and B frame index entries, if the
883 * index stream is enabled. Otherwise disable index entry
886 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
887 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
888 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);
890 /* Call out to the common CX2341x API setup for user controls */
892 cx2341x_handler_setup(&cx->cxhdl);
895 * When starting a capture and we're set for radio,
896 * ensure the video is muted, despite the user control.
898 if (!cx->cxhdl.video_mute &&
899 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
900 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
901 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);
903 /* Enable the Video Format Converter for UYVY 4:2:2 support,
904 * rather than the default HM12 Macroblovk 4:2:0 support.
906 if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
907 if (s->pixelformat == V4L2_PIX_FMT_UYVY)
908 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
911 /* If in doubt, default to HM12 */
912 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
917 if (atomic_read(&cx->tot_capturing) == 0) {
918 cx2341x_handler_set_busy(&cx->cxhdl, 1);
919 clear_bit(CX18_F_I_EOS, &cx->i_flags);
920 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
923 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
924 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
925 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
927 /* Init all the cpu_mdls for this stream */
928 cx18_stream_configure_mdls(s);
929 _cx18_stream_load_fw_queue(s);
932 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
933 CX18_DEBUG_WARN("Error starting capture!\n");
934 /* Ensure we're really not capturing before releasing MDLs */
935 set_bit(CX18_F_S_STOPPING, &s->s_flags);
936 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
937 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
939 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
940 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
941 /* FIXME - CX18_F_S_STREAMOFF as well? */
942 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
943 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
944 s->handle = CX18_INVALID_TASK_HANDLE;
945 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
946 if (atomic_read(&cx->tot_capturing) == 0) {
947 set_bit(CX18_F_I_EOS, &cx->i_flags);
948 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
953 /* you're live! sit back and await interrupts :) */
954 if (captype != CAPTURE_CHANNEL_TYPE_TS)
955 atomic_inc(&cx->ana_capturing);
956 atomic_inc(&cx->tot_capturing);
959 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream);
961 void cx18_stop_all_captures(struct cx18 *cx)
965 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
966 struct cx18_stream *s = &cx->streams[i];
968 if (!cx18_stream_enabled(s))
970 if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
971 cx18_stop_v4l2_encode_stream(s, 0);
975 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
977 struct cx18 *cx = s->cx;
979 if (!cx18_stream_enabled(s))
982 /* This function assumes that you are allowed to stop the capture
983 and that we are actually capturing */
985 CX18_DEBUG_INFO("Stop Capture\n");
987 if (atomic_read(&cx->tot_capturing) == 0)
990 set_bit(CX18_F_S_STOPPING, &s->s_flags);
991 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
992 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
994 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
996 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
997 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
1000 if (s->type != CX18_ENC_STREAM_TYPE_TS)
1001 atomic_dec(&cx->ana_capturing);
1002 atomic_dec(&cx->tot_capturing);
1004 /* Clear capture and no-read bits */
1005 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
1007 /* Tell the CX23418 it can't use our buffers anymore */
1008 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
1010 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
1011 s->handle = CX18_INVALID_TASK_HANDLE;
1012 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
1014 if (atomic_read(&cx->tot_capturing) > 0)
1017 cx2341x_handler_set_busy(&cx->cxhdl, 0);
1018 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
1023 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream);
1025 u32 cx18_find_handle(struct cx18 *cx)
1029 /* find first available handle to be used for global settings */
1030 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1031 struct cx18_stream *s = &cx->streams[i];
1033 if (s->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE))
1036 return CX18_INVALID_TASK_HANDLE;
1039 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
1042 struct cx18_stream *s;
1044 if (handle == CX18_INVALID_TASK_HANDLE)
1047 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1048 s = &cx->streams[i];
1049 if (s->handle != handle)
1051 if (cx18_stream_enabled(s))