1 /*
2 * cx18 init/start/stop/exit stream functions
3 *
4 * Derived from ivtv-streams.c
5 *
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
7 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
8 *
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.
13 *
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.
18 *
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
22 * 02111-1307 USA
23 */
24
25 #include "cx18-driver.h"
26 #include "cx18-io.h"
27 #include "cx18-fileops.h"
28 #include "cx18-mailbox.h"
29 #include "cx18-i2c.h"
30 #include "cx18-queue.h"
31 #include "cx18-ioctl.h"
32 #include "cx18-streams.h"
33 #include "cx18-cards.h"
34 #include "cx18-scb.h"
35 #include "cx18-dvb.h"
36
37 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C
38
39 static struct v4l2_file_operations cx18_v4l2_enc_fops = {
40 .owner = THIS_MODULE,
41 .read = cx18_v4l2_read,
42 .open = cx18_v4l2_open,
43 /* FIXME change to video_ioctl2 if serialization lock can be removed */
44 .unlocked_ioctl = cx18_v4l2_ioctl,
45 .release = cx18_v4l2_close,
46 .poll = cx18_v4l2_enc_poll,
47 .mmap = cx18_v4l2_mmap,
48 };
49
50 /* offset from 0 to register ts v4l2 minors on */
51 #define CX18_V4L2_ENC_TS_OFFSET 16
52 /* offset from 0 to register pcm v4l2 minors on */
53 #define CX18_V4L2_ENC_PCM_OFFSET 24
54 /* offset from 0 to register yuv v4l2 minors on */
55 #define CX18_V4L2_ENC_YUV_OFFSET 32
56
57 static struct {
58 const char *name;
59 int vfl_type;
60 int num_offset;
61 int dma;
62 enum v4l2_buf_type buf_type;
63 } cx18_stream_info[] = {
64 { /* CX18_ENC_STREAM_TYPE_MPG */
65 "encoder MPEG",
66 VFL_TYPE_GRABBER, 0,
67 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
68 },
69 { /* CX18_ENC_STREAM_TYPE_TS */
70 "TS",
71 VFL_TYPE_GRABBER, -1,
72 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
73 },
74 { /* CX18_ENC_STREAM_TYPE_YUV */
75 "encoder YUV",
76 VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
77 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
78 },
79 { /* CX18_ENC_STREAM_TYPE_VBI */
80 "encoder VBI",
81 VFL_TYPE_VBI, 0,
82 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE,
83 },
84 { /* CX18_ENC_STREAM_TYPE_PCM */
85 "encoder PCM audio",
86 VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
87 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE,
88 },
89 { /* CX18_ENC_STREAM_TYPE_IDX */
90 "encoder IDX",
91 VFL_TYPE_GRABBER, -1,
92 PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
93 },
94 { /* CX18_ENC_STREAM_TYPE_RAD */
95 "encoder radio",
96 VFL_TYPE_RADIO, 0,
97 PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE,
98 },
99 };
100
101
cx18_dma_free(struct videobuf_queue * q,struct cx18_stream * s,struct cx18_videobuf_buffer * buf)102 void cx18_dma_free(struct videobuf_queue *q,
103 struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
104 {
105 videobuf_waiton(q, &buf->vb, 0, 0);
106 videobuf_vmalloc_free(&buf->vb);
107 buf->vb.state = VIDEOBUF_NEEDS_INIT;
108 }
109
cx18_prepare_buffer(struct videobuf_queue * q,struct cx18_stream * s,struct cx18_videobuf_buffer * buf,u32 pixelformat,unsigned int width,unsigned int height,enum v4l2_field field)110 static int cx18_prepare_buffer(struct videobuf_queue *q,
111 struct cx18_stream *s,
112 struct cx18_videobuf_buffer *buf,
113 u32 pixelformat,
114 unsigned int width, unsigned int height,
115 enum v4l2_field field)
116 {
117 struct cx18 *cx = s->cx;
118 int rc = 0;
119
120 /* check settings */
121 buf->bytes_used = 0;
122
123 if ((width < 48) || (height < 32))
124 return -EINVAL;
125
126 buf->vb.size = (width * height * 2);
127 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
128 return -EINVAL;
129
130 /* alloc + fill struct (if changed) */
131 if (buf->vb.width != width || buf->vb.height != height ||
132 buf->vb.field != field || s->pixelformat != pixelformat ||
133 buf->tvnorm != cx->std) {
134
135 buf->vb.width = width;
136 buf->vb.height = height;
137 buf->vb.field = field;
138 buf->tvnorm = cx->std;
139 s->pixelformat = pixelformat;
140
141 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
142 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
143 if (s->pixelformat == V4L2_PIX_FMT_HM12)
144 s->vb_bytes_per_frame = height * 720 * 3 / 2;
145 else
146 s->vb_bytes_per_frame = height * 720 * 2;
147 cx18_dma_free(q, s, buf);
148 }
149
150 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
151 return -EINVAL;
152
153 if (buf->vb.field == 0)
154 buf->vb.field = V4L2_FIELD_INTERLACED;
155
156 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
157 buf->vb.width = width;
158 buf->vb.height = height;
159 buf->vb.field = field;
160 buf->tvnorm = cx->std;
161 s->pixelformat = pixelformat;
162
163 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
164 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
165 if (s->pixelformat == V4L2_PIX_FMT_HM12)
166 s->vb_bytes_per_frame = height * 720 * 3 / 2;
167 else
168 s->vb_bytes_per_frame = height * 720 * 2;
169 rc = videobuf_iolock(q, &buf->vb, NULL);
170 if (rc != 0)
171 goto fail;
172 }
173 buf->vb.state = VIDEOBUF_PREPARED;
174 return 0;
175
176 fail:
177 cx18_dma_free(q, s, buf);
178 return rc;
179
180 }
181
182 /* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576)
183 1440 is a single line of 4:2:2 YUV at 720 luma samples wide
184 */
185 #define VB_MIN_BUFFERS 32
186 #define VB_MIN_BUFSIZE 4147200
187
buffer_setup(struct videobuf_queue * q,unsigned int * count,unsigned int * size)188 static int buffer_setup(struct videobuf_queue *q,
189 unsigned int *count, unsigned int *size)
190 {
191 struct cx18_stream *s = q->priv_data;
192 struct cx18 *cx = s->cx;
193
194 *size = 2 * cx->cxhdl.width * cx->cxhdl.height;
195 if (*count == 0)
196 *count = VB_MIN_BUFFERS;
197
198 while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
199 (*count)--;
200
201 q->field = V4L2_FIELD_INTERLACED;
202 q->last = V4L2_FIELD_INTERLACED;
203
204 return 0;
205 }
206
buffer_prepare(struct videobuf_queue * q,struct videobuf_buffer * vb,enum v4l2_field field)207 static int buffer_prepare(struct videobuf_queue *q,
208 struct videobuf_buffer *vb,
209 enum v4l2_field field)
210 {
211 struct cx18_videobuf_buffer *buf =
212 container_of(vb, struct cx18_videobuf_buffer, vb);
213 struct cx18_stream *s = q->priv_data;
214 struct cx18 *cx = s->cx;
215
216 return cx18_prepare_buffer(q, s, buf, s->pixelformat,
217 cx->cxhdl.width, cx->cxhdl.height, field);
218 }
219
buffer_release(struct videobuf_queue * q,struct videobuf_buffer * vb)220 static void buffer_release(struct videobuf_queue *q,
221 struct videobuf_buffer *vb)
222 {
223 struct cx18_videobuf_buffer *buf =
224 container_of(vb, struct cx18_videobuf_buffer, vb);
225 struct cx18_stream *s = q->priv_data;
226
227 cx18_dma_free(q, s, buf);
228 }
229
buffer_queue(struct videobuf_queue * q,struct videobuf_buffer * vb)230 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
231 {
232 struct cx18_videobuf_buffer *buf =
233 container_of(vb, struct cx18_videobuf_buffer, vb);
234 struct cx18_stream *s = q->priv_data;
235
236 buf->vb.state = VIDEOBUF_QUEUED;
237
238 list_add_tail(&buf->vb.queue, &s->vb_capture);
239 }
240
241 static struct videobuf_queue_ops cx18_videobuf_qops = {
242 .buf_setup = buffer_setup,
243 .buf_prepare = buffer_prepare,
244 .buf_queue = buffer_queue,
245 .buf_release = buffer_release,
246 };
247
cx18_stream_init(struct cx18 * cx,int type)248 static void cx18_stream_init(struct cx18 *cx, int type)
249 {
250 struct cx18_stream *s = &cx->streams[type];
251 struct video_device *video_dev = s->video_dev;
252
253 /* we need to keep video_dev, so restore it afterwards */
254 memset(s, 0, sizeof(*s));
255 s->video_dev = video_dev;
256
257 /* initialize cx18_stream fields */
258 s->dvb = NULL;
259 s->cx = cx;
260 s->type = type;
261 s->name = cx18_stream_info[type].name;
262 s->handle = CX18_INVALID_TASK_HANDLE;
263
264 s->dma = cx18_stream_info[type].dma;
265 s->buffers = cx->stream_buffers[type];
266 s->buf_size = cx->stream_buf_size[type];
267 INIT_LIST_HEAD(&s->buf_pool);
268 s->bufs_per_mdl = 1;
269 s->mdl_size = s->buf_size * s->bufs_per_mdl;
270
271 init_waitqueue_head(&s->waitq);
272 s->id = -1;
273 spin_lock_init(&s->q_free.lock);
274 cx18_queue_init(&s->q_free);
275 spin_lock_init(&s->q_busy.lock);
276 cx18_queue_init(&s->q_busy);
277 spin_lock_init(&s->q_full.lock);
278 cx18_queue_init(&s->q_full);
279 spin_lock_init(&s->q_idle.lock);
280 cx18_queue_init(&s->q_idle);
281
282 INIT_WORK(&s->out_work_order, cx18_out_work_handler);
283
284 INIT_LIST_HEAD(&s->vb_capture);
285 s->vb_timeout.function = cx18_vb_timeout;
286 s->vb_timeout.data = (unsigned long)s;
287 init_timer(&s->vb_timeout);
288 spin_lock_init(&s->vb_lock);
289 if (type == CX18_ENC_STREAM_TYPE_YUV) {
290 spin_lock_init(&s->vbuf_q_lock);
291
292 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
293 videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops,
294 &cx->pci_dev->dev, &s->vbuf_q_lock,
295 V4L2_BUF_TYPE_VIDEO_CAPTURE,
296 V4L2_FIELD_INTERLACED,
297 sizeof(struct cx18_videobuf_buffer),
298 s, &cx->serialize_lock);
299
300 /* Assume the previous pixel default */
301 s->pixelformat = V4L2_PIX_FMT_HM12;
302 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2;
303 }
304 }
305
cx18_prep_dev(struct cx18 * cx,int type)306 static int cx18_prep_dev(struct cx18 *cx, int type)
307 {
308 struct cx18_stream *s = &cx->streams[type];
309 u32 cap = cx->v4l2_cap;
310 int num_offset = cx18_stream_info[type].num_offset;
311 int num = cx->instance + cx18_first_minor + num_offset;
312
313 /*
314 * These five fields are always initialized.
315 * For analog capture related streams, if video_dev == NULL then the
316 * stream is not in use.
317 * For the TS stream, if dvb == NULL then the stream is not in use.
318 * In those cases no other fields but these four can be used.
319 */
320 s->video_dev = NULL;
321 s->dvb = NULL;
322 s->cx = cx;
323 s->type = type;
324 s->name = cx18_stream_info[type].name;
325
326 /* Check whether the radio is supported */
327 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
328 return 0;
329
330 /* Check whether VBI is supported */
331 if (type == CX18_ENC_STREAM_TYPE_VBI &&
332 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
333 return 0;
334
335 /* User explicitly selected 0 buffers for these streams, so don't
336 create them. */
337 if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
338 cx->stream_buffers[type] == 0) {
339 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
340 return 0;
341 }
342
343 cx18_stream_init(cx, type);
344
345 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */
346 if (type == CX18_ENC_STREAM_TYPE_TS) {
347 if (cx->card->hw_all & CX18_HW_DVB) {
348 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
349 if (s->dvb == NULL) {
350 CX18_ERR("Couldn't allocate cx18_dvb structure"
351 " for %s\n", s->name);
352 return -ENOMEM;
353 }
354 } else {
355 /* Don't need buffers for the TS, if there is no DVB */
356 s->buffers = 0;
357 }
358 }
359
360 if (num_offset == -1)
361 return 0;
362
363 /* allocate and initialize the v4l2 video device structure */
364 s->video_dev = video_device_alloc();
365 if (s->video_dev == NULL) {
366 CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
367 s->name);
368 return -ENOMEM;
369 }
370
371 snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s",
372 cx->v4l2_dev.name, s->name);
373
374 s->video_dev->num = num;
375 s->video_dev->v4l2_dev = &cx->v4l2_dev;
376 s->video_dev->fops = &cx18_v4l2_enc_fops;
377 s->video_dev->release = video_device_release;
378 s->video_dev->tvnorms = V4L2_STD_ALL;
379 set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags);
380 cx18_set_funcs(s->video_dev);
381 return 0;
382 }
383
384 /* Initialize v4l2 variables and register v4l2 devices */
cx18_streams_setup(struct cx18 * cx)385 int cx18_streams_setup(struct cx18 *cx)
386 {
387 int type, ret;
388
389 /* Setup V4L2 Devices */
390 for (type = 0; type < CX18_MAX_STREAMS; type++) {
391 /* Prepare device */
392 ret = cx18_prep_dev(cx, type);
393 if (ret < 0)
394 break;
395
396 /* Allocate Stream */
397 ret = cx18_stream_alloc(&cx->streams[type]);
398 if (ret < 0)
399 break;
400 }
401 if (type == CX18_MAX_STREAMS)
402 return 0;
403
404 /* One or more streams could not be initialized. Clean 'em all up. */
405 cx18_streams_cleanup(cx, 0);
406 return ret;
407 }
408
cx18_reg_dev(struct cx18 * cx,int type)409 static int cx18_reg_dev(struct cx18 *cx, int type)
410 {
411 struct cx18_stream *s = &cx->streams[type];
412 int vfl_type = cx18_stream_info[type].vfl_type;
413 const char *name;
414 int num, ret;
415
416 if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) {
417 ret = cx18_dvb_register(s);
418 if (ret < 0) {
419 CX18_ERR("DVB failed to register\n");
420 return ret;
421 }
422 }
423
424 if (s->video_dev == NULL)
425 return 0;
426
427 num = s->video_dev->num;
428 /* card number + user defined offset + device offset */
429 if (type != CX18_ENC_STREAM_TYPE_MPG) {
430 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
431
432 if (s_mpg->video_dev)
433 num = s_mpg->video_dev->num
434 + cx18_stream_info[type].num_offset;
435 }
436 video_set_drvdata(s->video_dev, s);
437
438 /* Register device. First try the desired minor, then any free one. */
439 ret = video_register_device_no_warn(s->video_dev, vfl_type, num);
440 if (ret < 0) {
441 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
442 s->name, num);
443 video_device_release(s->video_dev);
444 s->video_dev = NULL;
445 return ret;
446 }
447
448 name = video_device_node_name(s->video_dev);
449
450 switch (vfl_type) {
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);
456 break;
457
458 case VFL_TYPE_RADIO:
459 CX18_INFO("Registered device %s for %s\n", name, s->name);
460 break;
461
462 case VFL_TYPE_VBI:
463 if (cx->stream_buffers[type])
464 CX18_INFO("Registered device %s for %s "
465 "(%d x %d bytes)\n",
466 name, s->name, cx->stream_buffers[type],
467 cx->stream_buf_size[type]);
468 else
469 CX18_INFO("Registered device %s for %s\n",
470 name, s->name);
471 break;
472 }
473
474 return 0;
475 }
476
477 /* Register v4l2 devices */
cx18_streams_register(struct cx18 * cx)478 int cx18_streams_register(struct cx18 *cx)
479 {
480 int type;
481 int err;
482 int ret = 0;
483
484 /* Register V4L2 devices */
485 for (type = 0; type < CX18_MAX_STREAMS; type++) {
486 err = cx18_reg_dev(cx, type);
487 if (err && ret == 0)
488 ret = err;
489 }
490
491 if (ret == 0)
492 return 0;
493
494 /* One or more streams could not be initialized. Clean 'em all up. */
495 cx18_streams_cleanup(cx, 1);
496 return ret;
497 }
498
499 /* Unregister v4l2 devices */
cx18_streams_cleanup(struct cx18 * cx,int unregister)500 void cx18_streams_cleanup(struct cx18 *cx, int unregister)
501 {
502 struct video_device *vdev;
503 int type;
504
505 /* Teardown all streams */
506 for (type = 0; type < CX18_MAX_STREAMS; type++) {
507
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) {
511 if (unregister)
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]);
516 }
517 continue;
518 }
519
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;
525 /*
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
530 */
531 if (cx->streams[type].buffers != 0)
532 cx18_stream_free(&cx->streams[type]);
533 }
534 continue;
535 }
536
537 /* If struct video_device exists, can have buffers allocated */
538 vdev = cx->streams[type].video_dev;
539
540 cx->streams[type].video_dev = NULL;
541 if (vdev == NULL)
542 continue;
543
544 if (type == CX18_ENC_STREAM_TYPE_YUV)
545 videobuf_mmap_free(&cx->streams[type].vbuf_q);
546
547 cx18_stream_free(&cx->streams[type]);
548
549 /* Unregister or release device */
550 if (unregister)
551 video_unregister_device(vdev);
552 else
553 video_device_release(vdev);
554 }
555 }
556
cx18_vbi_setup(struct cx18_stream * s)557 static void cx18_vbi_setup(struct cx18_stream *s)
558 {
559 struct cx18 *cx = s->cx;
560 int raw = cx18_raw_vbi(cx);
561 u32 data[CX2341X_MBOX_MAX_DATA];
562 int lines;
563
564 if (cx->is_60hz) {
565 cx->vbi.count = 12;
566 cx->vbi.start[0] = 10;
567 cx->vbi.start[1] = 273;
568 } else { /* PAL/SECAM */
569 cx->vbi.count = 18;
570 cx->vbi.start[0] = 6;
571 cx->vbi.start[1] = 318;
572 }
573
574 /* setup VBI registers */
575 if (raw)
576 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi);
577 else
578 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced);
579
580 /*
581 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
582 * VBI when the first analog capture channel starts, as once it starts
583 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup
584 * (i.e. for the VBI capture channels). We also send it for each
585 * analog capture channel anyway just to make sure we get the proper
586 * behavior
587 */
588 if (raw) {
589 lines = cx->vbi.count * 2;
590 } else {
591 /*
592 * For 525/60 systems, according to the VIP 2 & BT.656 std:
593 * The EAV RP code's Field bit toggles on line 4, a few lines
594 * after the Vertcal Blank bit has already toggled.
595 * Tell the encoder to capture 21-4+1=18 lines per field,
596 * since we want lines 10 through 21.
597 *
598 * For 625/50 systems, according to the VIP 2 & BT.656 std:
599 * The EAV RP code's Field bit toggles on line 1, a few lines
600 * after the Vertcal Blank bit has already toggled.
601 * (We've actually set the digitizer so that the Field bit
602 * toggles on line 2.) Tell the encoder to capture 23-2+1=22
603 * lines per field, since we want lines 6 through 23.
604 */
605 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
606 }
607
608 data[0] = s->handle;
609 /* Lines per field */
610 data[1] = (lines / 2) | ((lines / 2) << 16);
611 /* bytes per line */
612 data[2] = (raw ? vbi_active_samples
613 : (cx->is_60hz ? vbi_hblank_samples_60Hz
614 : vbi_hblank_samples_50Hz));
615 /* Every X number of frames a VBI interrupt arrives
616 (frames as in 25 or 30 fps) */
617 data[3] = 1;
618 /*
619 * Set the SAV/EAV RP codes to look for as start/stop points
620 * when in VIP-1.1 mode
621 */
622 if (raw) {
623 /*
624 * Start codes for beginning of "active" line in vertical blank
625 * 0x20 ( VerticalBlank )
626 * 0x60 ( EvenField VerticalBlank )
627 */
628 data[4] = 0x20602060;
629 /*
630 * End codes for end of "active" raw lines and regular lines
631 * 0x30 ( VerticalBlank HorizontalBlank)
632 * 0x70 ( EvenField VerticalBlank HorizontalBlank)
633 * 0x90 (Task HorizontalBlank)
634 * 0xd0 (Task EvenField HorizontalBlank)
635 */
636 data[5] = 0x307090d0;
637 } else {
638 /*
639 * End codes for active video, we want data in the hblank region
640 * 0xb0 (Task 0 VerticalBlank HorizontalBlank)
641 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
642 *
643 * Since the V bit is only allowed to toggle in the EAV RP code,
644 * just before the first active region line, these two
645 * are problematic:
646 * 0x90 (Task HorizontalBlank)
647 * 0xd0 (Task EvenField HorizontalBlank)
648 *
649 * We have set the digitzer such that we don't have to worry
650 * about these problem codes.
651 */
652 data[4] = 0xB0F0B0F0;
653 /*
654 * Start codes for beginning of active line in vertical blank
655 * 0xa0 (Task VerticalBlank )
656 * 0xe0 (Task EvenField VerticalBlank )
657 */
658 data[5] = 0xA0E0A0E0;
659 }
660
661 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
662 data[0], data[1], data[2], data[3], data[4], data[5]);
663
664 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
665 }
666
cx18_stream_rotate_idx_mdls(struct cx18 * cx)667 void cx18_stream_rotate_idx_mdls(struct cx18 *cx)
668 {
669 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
670 struct cx18_mdl *mdl;
671
672 if (!cx18_stream_enabled(s))
673 return;
674
675 /* Return if the firmware is not running low on MDLs */
676 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >=
677 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN)
678 return;
679
680 /* Return if there are no MDLs to rotate back to the firmware */
681 if (atomic_read(&s->q_full.depth) < 2)
682 return;
683
684 /*
685 * Take the oldest IDX MDL still holding data, and discard its index
686 * entries by scheduling the MDL to go back to the firmware
687 */
688 mdl = cx18_dequeue(s, &s->q_full);
689 if (mdl != NULL)
690 cx18_enqueue(s, mdl, &s->q_free);
691 }
692
693 static
_cx18_stream_put_mdl_fw(struct cx18_stream * s,struct cx18_mdl * mdl)694 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
695 struct cx18_mdl *mdl)
696 {
697 struct cx18 *cx = s->cx;
698 struct cx18_queue *q;
699
700 /* Don't give it to the firmware, if we're not running a capture */
701 if (s->handle == CX18_INVALID_TASK_HANDLE ||
702 test_bit(CX18_F_S_STOPPING, &s->s_flags) ||
703 !test_bit(CX18_F_S_STREAMING, &s->s_flags))
704 return cx18_enqueue(s, mdl, &s->q_free);
705
706 q = cx18_enqueue(s, mdl, &s->q_busy);
707 if (q != &s->q_busy)
708 return q; /* The firmware has the max MDLs it can handle */
709
710 cx18_mdl_sync_for_device(s, mdl);
711 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
712 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
713 s->bufs_per_mdl, mdl->id, s->mdl_size);
714 return q;
715 }
716
717 static
_cx18_stream_load_fw_queue(struct cx18_stream * s)718 void _cx18_stream_load_fw_queue(struct cx18_stream *s)
719 {
720 struct cx18_queue *q;
721 struct cx18_mdl *mdl;
722
723 if (atomic_read(&s->q_free.depth) == 0 ||
724 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
725 return;
726
727 /* Move from q_free to q_busy notifying the firmware, until the limit */
728 do {
729 mdl = cx18_dequeue(s, &s->q_free);
730 if (mdl == NULL)
731 break;
732 q = _cx18_stream_put_mdl_fw(s, mdl);
733 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
734 && q == &s->q_busy);
735 }
736
cx18_out_work_handler(struct work_struct * work)737 void cx18_out_work_handler(struct work_struct *work)
738 {
739 struct cx18_stream *s =
740 container_of(work, struct cx18_stream, out_work_order);
741
742 _cx18_stream_load_fw_queue(s);
743 }
744
cx18_stream_configure_mdls(struct cx18_stream * s)745 static void cx18_stream_configure_mdls(struct cx18_stream *s)
746 {
747 cx18_unload_queues(s);
748
749 switch (s->type) {
750 case CX18_ENC_STREAM_TYPE_YUV:
751 /*
752 * Height should be a multiple of 32 lines.
753 * Set the MDL size to the exact size needed for one frame.
754 * Use enough buffers per MDL to cover the MDL size
755 */
756 if (s->pixelformat == V4L2_PIX_FMT_HM12)
757 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
758 else
759 s->mdl_size = 720 * s->cx->cxhdl.height * 2;
760 s->bufs_per_mdl = s->mdl_size / s->buf_size;
761 if (s->mdl_size % s->buf_size)
762 s->bufs_per_mdl++;
763 break;
764 case CX18_ENC_STREAM_TYPE_VBI:
765 s->bufs_per_mdl = 1;
766 if (cx18_raw_vbi(s->cx)) {
767 s->mdl_size = (s->cx->is_60hz ? 12 : 18)
768 * 2 * vbi_active_samples;
769 } else {
770 /*
771 * See comment in cx18_vbi_setup() below about the
772 * extra lines we capture in sliced VBI mode due to
773 * the lines on which EAV RP codes toggle.
774 */
775 s->mdl_size = s->cx->is_60hz
776 ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
777 : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
778 }
779 break;
780 default:
781 s->bufs_per_mdl = 1;
782 s->mdl_size = s->buf_size * s->bufs_per_mdl;
783 break;
784 }
785
786 cx18_load_queues(s);
787 }
788
cx18_start_v4l2_encode_stream(struct cx18_stream * s)789 int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
790 {
791 u32 data[MAX_MB_ARGUMENTS];
792 struct cx18 *cx = s->cx;
793 int captype = 0;
794 struct cx18_stream *s_idx;
795
796 if (!cx18_stream_enabled(s))
797 return -EINVAL;
798
799 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
800
801 switch (s->type) {
802 case CX18_ENC_STREAM_TYPE_MPG:
803 captype = CAPTURE_CHANNEL_TYPE_MPEG;
804 cx->mpg_data_received = cx->vbi_data_inserted = 0;
805 cx->dualwatch_jiffies = jiffies;
806 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode);
807 cx->search_pack_header = 0;
808 break;
809
810 case CX18_ENC_STREAM_TYPE_IDX:
811 captype = CAPTURE_CHANNEL_TYPE_INDEX;
812 break;
813 case CX18_ENC_STREAM_TYPE_TS:
814 captype = CAPTURE_CHANNEL_TYPE_TS;
815 break;
816 case CX18_ENC_STREAM_TYPE_YUV:
817 captype = CAPTURE_CHANNEL_TYPE_YUV;
818 break;
819 case CX18_ENC_STREAM_TYPE_PCM:
820 captype = CAPTURE_CHANNEL_TYPE_PCM;
821 break;
822 case CX18_ENC_STREAM_TYPE_VBI:
823 #ifdef CX18_ENCODER_PARSES_SLICED
824 captype = cx18_raw_vbi(cx) ?
825 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
826 #else
827 /*
828 * Currently we set things up so that Sliced VBI from the
829 * digitizer is handled as Raw VBI by the encoder
830 */
831 captype = CAPTURE_CHANNEL_TYPE_VBI;
832 #endif
833 cx->vbi.frame = 0;
834 cx->vbi.inserted_frame = 0;
835 memset(cx->vbi.sliced_mpeg_size,
836 0, sizeof(cx->vbi.sliced_mpeg_size));
837 break;
838 default:
839 return -EINVAL;
840 }
841
842 /* Clear Streamoff flags in case left from last capture */
843 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
844
845 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
846 s->handle = data[0];
847 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
848
849 /*
850 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and
851 * set up all the parameters, as it is not obvious which parameters the
852 * firmware shares across capture channel types and which it does not.
853 *
854 * Some of the cx18_vapi() calls below apply to only certain capture
855 * channel types. We're hoping there's no harm in calling most of them
856 * anyway, as long as the values are all consistent. Setting some
857 * shared parameters will have no effect once an analog capture channel
858 * has started streaming.
859 */
860 if (captype != CAPTURE_CHANNEL_TYPE_TS) {
861 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
862 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
863 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
864 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
865
866 /*
867 * Audio related reset according to
868 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
869 */
870 if (atomic_read(&cx->ana_capturing) == 0)
871 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
872 s->handle, 12);
873
874 /*
875 * Number of lines for Field 1 & Field 2 according to
876 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
877 * Field 1 is 312 for 625 line systems in BT.656
878 * Field 2 is 313 for 625 line systems in BT.656
879 */
880 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
881 s->handle, 312, 313);
882
883 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
884 cx18_vbi_setup(s);
885
886 /*
887 * Select to receive I, P, and B frame index entries, if the
888 * index stream is enabled. Otherwise disable index entry
889 * generation.
890 */
891 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
892 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
893 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);
894
895 /* Call out to the common CX2341x API setup for user controls */
896 cx->cxhdl.priv = s;
897 cx2341x_handler_setup(&cx->cxhdl);
898
899 /*
900 * When starting a capture and we're set for radio,
901 * ensure the video is muted, despite the user control.
902 */
903 if (!cx->cxhdl.video_mute &&
904 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
905 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
906 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);
907
908 /* Enable the Video Format Converter for UYVY 4:2:2 support,
909 * rather than the default HM12 Macroblovk 4:2:0 support.
910 */
911 if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
912 if (s->pixelformat == V4L2_PIX_FMT_UYVY)
913 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
914 s->handle, 1);
915 else
916 /* If in doubt, default to HM12 */
917 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
918 s->handle, 0);
919 }
920 }
921
922 if (atomic_read(&cx->tot_capturing) == 0) {
923 cx2341x_handler_set_busy(&cx->cxhdl, 1);
924 clear_bit(CX18_F_I_EOS, &cx->i_flags);
925 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
926 }
927
928 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
929 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
930 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
931
932 /* Init all the cpu_mdls for this stream */
933 cx18_stream_configure_mdls(s);
934 _cx18_stream_load_fw_queue(s);
935
936 /* begin_capture */
937 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
938 CX18_DEBUG_WARN("Error starting capture!\n");
939 /* Ensure we're really not capturing before releasing MDLs */
940 set_bit(CX18_F_S_STOPPING, &s->s_flags);
941 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
942 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
943 else
944 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
945 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
946 /* FIXME - CX18_F_S_STREAMOFF as well? */
947 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
948 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
949 s->handle = CX18_INVALID_TASK_HANDLE;
950 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
951 if (atomic_read(&cx->tot_capturing) == 0) {
952 set_bit(CX18_F_I_EOS, &cx->i_flags);
953 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
954 }
955 return -EINVAL;
956 }
957
958 /* you're live! sit back and await interrupts :) */
959 if (captype != CAPTURE_CHANNEL_TYPE_TS)
960 atomic_inc(&cx->ana_capturing);
961 atomic_inc(&cx->tot_capturing);
962 return 0;
963 }
964 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream);
965
cx18_stop_all_captures(struct cx18 * cx)966 void cx18_stop_all_captures(struct cx18 *cx)
967 {
968 int i;
969
970 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
971 struct cx18_stream *s = &cx->streams[i];
972
973 if (!cx18_stream_enabled(s))
974 continue;
975 if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
976 cx18_stop_v4l2_encode_stream(s, 0);
977 }
978 }
979
cx18_stop_v4l2_encode_stream(struct cx18_stream * s,int gop_end)980 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
981 {
982 struct cx18 *cx = s->cx;
983 unsigned long then;
984
985 if (!cx18_stream_enabled(s))
986 return -EINVAL;
987
988 /* This function assumes that you are allowed to stop the capture
989 and that we are actually capturing */
990
991 CX18_DEBUG_INFO("Stop Capture\n");
992
993 if (atomic_read(&cx->tot_capturing) == 0)
994 return 0;
995
996 set_bit(CX18_F_S_STOPPING, &s->s_flags);
997 if (s->type == CX18_ENC_STREAM_TYPE_MPG)
998 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
999 else
1000 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
1001
1002 then = jiffies;
1003
1004 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
1005 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
1006 }
1007
1008 if (s->type != CX18_ENC_STREAM_TYPE_TS)
1009 atomic_dec(&cx->ana_capturing);
1010 atomic_dec(&cx->tot_capturing);
1011
1012 /* Clear capture and no-read bits */
1013 clear_bit(CX18_F_S_STREAMING, &s->s_flags);
1014
1015 /* Tell the CX23418 it can't use our buffers anymore */
1016 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
1017
1018 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
1019 s->handle = CX18_INVALID_TASK_HANDLE;
1020 clear_bit(CX18_F_S_STOPPING, &s->s_flags);
1021
1022 if (atomic_read(&cx->tot_capturing) > 0)
1023 return 0;
1024
1025 cx2341x_handler_set_busy(&cx->cxhdl, 0);
1026 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
1027 wake_up(&s->waitq);
1028
1029 return 0;
1030 }
1031 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream);
1032
cx18_find_handle(struct cx18 * cx)1033 u32 cx18_find_handle(struct cx18 *cx)
1034 {
1035 int i;
1036
1037 /* find first available handle to be used for global settings */
1038 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1039 struct cx18_stream *s = &cx->streams[i];
1040
1041 if (s->video_dev && (s->handle != CX18_INVALID_TASK_HANDLE))
1042 return s->handle;
1043 }
1044 return CX18_INVALID_TASK_HANDLE;
1045 }
1046
cx18_handle_to_stream(struct cx18 * cx,u32 handle)1047 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
1048 {
1049 int i;
1050 struct cx18_stream *s;
1051
1052 if (handle == CX18_INVALID_TASK_HANDLE)
1053 return NULL;
1054
1055 for (i = 0; i < CX18_MAX_STREAMS; i++) {
1056 s = &cx->streams[i];
1057 if (s->handle != handle)
1058 continue;
1059 if (cx18_stream_enabled(s))
1060 return s;
1061 }
1062 return NULL;
1063 }
1064