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1c1e45d1 HV |
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 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
21 | * 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include "cx18-driver.h" | |
25 | #include "cx18-fileops.h" | |
26 | #include "cx18-mailbox.h" | |
27 | #include "cx18-i2c.h" | |
28 | #include "cx18-queue.h" | |
29 | #include "cx18-ioctl.h" | |
30 | #include "cx18-streams.h" | |
31 | #include "cx18-cards.h" | |
32 | #include "cx18-scb.h" | |
33 | #include "cx18-av-core.h" | |
34 | #include "cx18-dvb.h" | |
35 | ||
36 | #define CX18_DSP0_INTERRUPT_MASK 0xd0004C | |
37 | ||
38 | static struct file_operations cx18_v4l2_enc_fops = { | |
daf20d95 HV |
39 | .owner = THIS_MODULE, |
40 | .read = cx18_v4l2_read, | |
41 | .open = cx18_v4l2_open, | |
42 | .ioctl = cx18_v4l2_ioctl, | |
43 | .compat_ioctl = v4l_compat_ioctl32, | |
44 | .release = cx18_v4l2_close, | |
45 | .poll = cx18_v4l2_enc_poll, | |
1c1e45d1 HV |
46 | }; |
47 | ||
48 | /* offset from 0 to register ts v4l2 minors on */ | |
49 | #define CX18_V4L2_ENC_TS_OFFSET 16 | |
50 | /* offset from 0 to register pcm v4l2 minors on */ | |
51 | #define CX18_V4L2_ENC_PCM_OFFSET 24 | |
52 | /* offset from 0 to register yuv v4l2 minors on */ | |
53 | #define CX18_V4L2_ENC_YUV_OFFSET 32 | |
54 | ||
55 | static struct { | |
56 | const char *name; | |
57 | int vfl_type; | |
58 | int minor_offset; | |
59 | int dma; | |
60 | enum v4l2_buf_type buf_type; | |
61 | struct file_operations *fops; | |
62 | } cx18_stream_info[] = { | |
63 | { /* CX18_ENC_STREAM_TYPE_MPG */ | |
64 | "encoder MPEG", | |
65 | VFL_TYPE_GRABBER, 0, | |
66 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
67 | &cx18_v4l2_enc_fops | |
68 | }, | |
69 | { /* CX18_ENC_STREAM_TYPE_TS */ | |
70 | "TS", | |
71 | VFL_TYPE_GRABBER, -1, | |
72 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
73 | &cx18_v4l2_enc_fops | |
74 | }, | |
75 | { /* CX18_ENC_STREAM_TYPE_YUV */ | |
76 | "encoder YUV", | |
77 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, | |
78 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
79 | &cx18_v4l2_enc_fops | |
80 | }, | |
81 | { /* CX18_ENC_STREAM_TYPE_VBI */ | |
82 | "encoder VBI", | |
83 | VFL_TYPE_VBI, 0, | |
84 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE, | |
85 | &cx18_v4l2_enc_fops | |
86 | }, | |
87 | { /* CX18_ENC_STREAM_TYPE_PCM */ | |
88 | "encoder PCM audio", | |
89 | VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, | |
90 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE, | |
91 | &cx18_v4l2_enc_fops | |
92 | }, | |
93 | { /* CX18_ENC_STREAM_TYPE_IDX */ | |
94 | "encoder IDX", | |
95 | VFL_TYPE_GRABBER, -1, | |
96 | PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
97 | &cx18_v4l2_enc_fops | |
98 | }, | |
99 | { /* CX18_ENC_STREAM_TYPE_RAD */ | |
100 | "encoder radio", | |
101 | VFL_TYPE_RADIO, 0, | |
102 | PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE, | |
103 | &cx18_v4l2_enc_fops | |
104 | }, | |
105 | }; | |
106 | ||
107 | static void cx18_stream_init(struct cx18 *cx, int type) | |
108 | { | |
109 | struct cx18_stream *s = &cx->streams[type]; | |
110 | struct video_device *dev = s->v4l2dev; | |
111 | u32 max_size = cx->options.megabytes[type] * 1024 * 1024; | |
112 | ||
113 | /* we need to keep v4l2dev, so restore it afterwards */ | |
114 | memset(s, 0, sizeof(*s)); | |
115 | s->v4l2dev = dev; | |
116 | ||
117 | /* initialize cx18_stream fields */ | |
118 | s->cx = cx; | |
119 | s->type = type; | |
120 | s->name = cx18_stream_info[type].name; | |
121 | s->handle = 0xffffffff; | |
122 | ||
123 | s->dma = cx18_stream_info[type].dma; | |
124 | s->buf_size = cx->stream_buf_size[type]; | |
125 | if (s->buf_size) | |
126 | s->buffers = max_size / s->buf_size; | |
127 | if (s->buffers > 63) { | |
128 | /* Each stream has a maximum of 63 buffers, | |
129 | ensure we do not exceed that. */ | |
130 | s->buffers = 63; | |
131 | s->buf_size = (max_size / s->buffers) & ~0xfff; | |
132 | } | |
133 | spin_lock_init(&s->qlock); | |
134 | init_waitqueue_head(&s->waitq); | |
135 | s->id = -1; | |
136 | cx18_queue_init(&s->q_free); | |
137 | cx18_queue_init(&s->q_full); | |
138 | cx18_queue_init(&s->q_io); | |
139 | } | |
140 | ||
141 | static int cx18_prep_dev(struct cx18 *cx, int type) | |
142 | { | |
143 | struct cx18_stream *s = &cx->streams[type]; | |
144 | u32 cap = cx->v4l2_cap; | |
145 | int minor_offset = cx18_stream_info[type].minor_offset; | |
146 | int minor; | |
147 | ||
148 | /* These four fields are always initialized. If v4l2dev == NULL, then | |
149 | this stream is not in use. In that case no other fields but these | |
150 | four can be used. */ | |
151 | s->v4l2dev = NULL; | |
152 | s->cx = cx; | |
153 | s->type = type; | |
154 | s->name = cx18_stream_info[type].name; | |
155 | ||
156 | /* Check whether the radio is supported */ | |
157 | if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) | |
158 | return 0; | |
159 | ||
160 | /* Check whether VBI is supported */ | |
161 | if (type == CX18_ENC_STREAM_TYPE_VBI && | |
162 | !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) | |
163 | return 0; | |
164 | ||
165 | /* card number + user defined offset + device offset */ | |
166 | minor = cx->num + cx18_first_minor + minor_offset; | |
167 | ||
168 | /* User explicitly selected 0 buffers for these streams, so don't | |
169 | create them. */ | |
170 | if (cx18_stream_info[type].dma != PCI_DMA_NONE && | |
171 | cx->options.megabytes[type] == 0) { | |
172 | CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); | |
173 | return 0; | |
174 | } | |
175 | ||
176 | cx18_stream_init(cx, type); | |
177 | ||
178 | if (minor_offset == -1) | |
179 | return 0; | |
180 | ||
181 | /* allocate and initialize the v4l2 video device structure */ | |
182 | s->v4l2dev = video_device_alloc(); | |
183 | if (s->v4l2dev == NULL) { | |
184 | CX18_ERR("Couldn't allocate v4l2 video_device for %s\n", | |
185 | s->name); | |
186 | return -ENOMEM; | |
187 | } | |
188 | ||
189 | s->v4l2dev->type = | |
190 | VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT | | |
191 | VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER; | |
192 | snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "cx18%d %s", | |
193 | cx->num, s->name); | |
194 | ||
195 | s->v4l2dev->minor = minor; | |
196 | s->v4l2dev->dev = &cx->dev->dev; | |
197 | s->v4l2dev->fops = cx18_stream_info[type].fops; | |
198 | s->v4l2dev->release = video_device_release; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | /* Initialize v4l2 variables and register v4l2 devices */ | |
204 | int cx18_streams_setup(struct cx18 *cx) | |
205 | { | |
206 | int type; | |
207 | ||
208 | /* Setup V4L2 Devices */ | |
209 | for (type = 0; type < CX18_MAX_STREAMS; type++) { | |
210 | /* Prepare device */ | |
211 | if (cx18_prep_dev(cx, type)) | |
212 | break; | |
213 | ||
214 | /* Allocate Stream */ | |
215 | if (cx18_stream_alloc(&cx->streams[type])) | |
216 | break; | |
217 | } | |
218 | if (type == CX18_MAX_STREAMS) | |
219 | return 0; | |
220 | ||
221 | /* One or more streams could not be initialized. Clean 'em all up. */ | |
3f98387e | 222 | cx18_streams_cleanup(cx, 0); |
1c1e45d1 HV |
223 | return -ENOMEM; |
224 | } | |
225 | ||
226 | static int cx18_reg_dev(struct cx18 *cx, int type) | |
227 | { | |
228 | struct cx18_stream *s = &cx->streams[type]; | |
229 | int vfl_type = cx18_stream_info[type].vfl_type; | |
230 | int minor; | |
231 | ||
232 | /* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something? | |
233 | * We need a VFL_TYPE_TS defined. | |
234 | */ | |
235 | if (strcmp("TS", s->name) == 0) { | |
236 | /* just return if no DVB is supported */ | |
237 | if ((cx->card->hw_all & CX18_HW_DVB) == 0) | |
238 | return 0; | |
239 | if (cx18_dvb_register(s) < 0) { | |
240 | CX18_ERR("DVB failed to register\n"); | |
241 | return -EINVAL; | |
242 | } | |
243 | } | |
244 | ||
245 | if (s->v4l2dev == NULL) | |
246 | return 0; | |
247 | ||
248 | minor = s->v4l2dev->minor; | |
249 | ||
250 | /* Register device. First try the desired minor, then any free one. */ | |
251 | if (video_register_device(s->v4l2dev, vfl_type, minor) && | |
252 | video_register_device(s->v4l2dev, vfl_type, -1)) { | |
253 | CX18_ERR("Couldn't register v4l2 device for %s minor %d\n", | |
254 | s->name, minor); | |
255 | video_device_release(s->v4l2dev); | |
256 | s->v4l2dev = NULL; | |
257 | return -ENOMEM; | |
258 | } | |
259 | minor = s->v4l2dev->minor; | |
260 | ||
261 | switch (vfl_type) { | |
262 | case VFL_TYPE_GRABBER: | |
263 | CX18_INFO("Registered device video%d for %s (%d MB)\n", | |
264 | minor, s->name, cx->options.megabytes[type]); | |
265 | break; | |
266 | ||
267 | case VFL_TYPE_RADIO: | |
268 | CX18_INFO("Registered device radio%d for %s\n", | |
269 | minor - MINOR_VFL_TYPE_RADIO_MIN, s->name); | |
270 | break; | |
271 | ||
272 | case VFL_TYPE_VBI: | |
273 | if (cx->options.megabytes[type]) | |
274 | CX18_INFO("Registered device vbi%d for %s (%d MB)\n", | |
275 | minor - MINOR_VFL_TYPE_VBI_MIN, | |
276 | s->name, cx->options.megabytes[type]); | |
277 | else | |
278 | CX18_INFO("Registered device vbi%d for %s\n", | |
279 | minor - MINOR_VFL_TYPE_VBI_MIN, s->name); | |
280 | break; | |
281 | } | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | /* Register v4l2 devices */ | |
287 | int cx18_streams_register(struct cx18 *cx) | |
288 | { | |
289 | int type; | |
290 | int err = 0; | |
291 | ||
292 | /* Register V4L2 devices */ | |
293 | for (type = 0; type < CX18_MAX_STREAMS; type++) | |
294 | err |= cx18_reg_dev(cx, type); | |
295 | ||
296 | if (err == 0) | |
297 | return 0; | |
298 | ||
299 | /* One or more streams could not be initialized. Clean 'em all up. */ | |
3f98387e | 300 | cx18_streams_cleanup(cx, 1); |
1c1e45d1 HV |
301 | return -ENOMEM; |
302 | } | |
303 | ||
304 | /* Unregister v4l2 devices */ | |
3f98387e | 305 | void cx18_streams_cleanup(struct cx18 *cx, int unregister) |
1c1e45d1 HV |
306 | { |
307 | struct video_device *vdev; | |
308 | int type; | |
309 | ||
310 | /* Teardown all streams */ | |
311 | for (type = 0; type < CX18_MAX_STREAMS; type++) { | |
312 | if (cx->streams[type].dvb.enabled) | |
313 | cx18_dvb_unregister(&cx->streams[type]); | |
314 | ||
315 | vdev = cx->streams[type].v4l2dev; | |
316 | ||
317 | cx->streams[type].v4l2dev = NULL; | |
318 | if (vdev == NULL) | |
319 | continue; | |
320 | ||
321 | cx18_stream_free(&cx->streams[type]); | |
322 | ||
3f98387e HV |
323 | /* Unregister or release device */ |
324 | if (unregister) | |
325 | video_unregister_device(vdev); | |
326 | else | |
327 | video_device_release(vdev); | |
1c1e45d1 HV |
328 | } |
329 | } | |
330 | ||
331 | static void cx18_vbi_setup(struct cx18_stream *s) | |
332 | { | |
333 | struct cx18 *cx = s->cx; | |
334 | int raw = cx->vbi.sliced_in->service_set == 0; | |
335 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
336 | int lines; | |
337 | ||
338 | if (cx->is_60hz) { | |
339 | cx->vbi.count = 12; | |
340 | cx->vbi.start[0] = 10; | |
341 | cx->vbi.start[1] = 273; | |
342 | } else { /* PAL/SECAM */ | |
343 | cx->vbi.count = 18; | |
344 | cx->vbi.start[0] = 6; | |
345 | cx->vbi.start[1] = 318; | |
346 | } | |
347 | ||
348 | /* setup VBI registers */ | |
349 | cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in); | |
350 | ||
351 | /* determine number of lines and total number of VBI bytes. | |
352 | A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 | |
353 | The '- 1' byte is probably an unused U or V byte. Or something... | |
354 | A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal | |
355 | header, 42 data bytes + checksum (to be confirmed) */ | |
356 | if (raw) { | |
357 | lines = cx->vbi.count * 2; | |
358 | } else { | |
359 | lines = cx->is_60hz ? 24 : 38; | |
360 | if (cx->is_60hz) | |
361 | lines += 2; | |
362 | } | |
363 | ||
364 | cx->vbi.enc_size = lines * | |
365 | (raw ? cx->vbi.raw_size : cx->vbi.sliced_size); | |
366 | ||
367 | data[0] = s->handle; | |
368 | /* Lines per field */ | |
369 | data[1] = (lines / 2) | ((lines / 2) << 16); | |
370 | /* bytes per line */ | |
371 | data[2] = (raw ? cx->vbi.raw_size : cx->vbi.sliced_size); | |
372 | /* Every X number of frames a VBI interrupt arrives | |
373 | (frames as in 25 or 30 fps) */ | |
374 | data[3] = 1; | |
375 | /* Setup VBI for the cx25840 digitizer */ | |
376 | if (raw) { | |
377 | data[4] = 0x20602060; | |
378 | data[5] = 0x30703070; | |
379 | } else { | |
380 | data[4] = 0xB0F0B0F0; | |
381 | data[5] = 0xA0E0A0E0; | |
382 | } | |
383 | ||
384 | CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", | |
385 | data[0], data[1], data[2], data[3], data[4], data[5]); | |
386 | ||
387 | if (s->type == CX18_ENC_STREAM_TYPE_VBI) | |
388 | cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); | |
389 | } | |
390 | ||
391 | int cx18_start_v4l2_encode_stream(struct cx18_stream *s) | |
392 | { | |
393 | u32 data[MAX_MB_ARGUMENTS]; | |
394 | struct cx18 *cx = s->cx; | |
395 | struct list_head *p; | |
396 | int ts = 0; | |
397 | int captype = 0; | |
398 | ||
399 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) | |
400 | return -EINVAL; | |
401 | ||
402 | CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); | |
403 | ||
404 | switch (s->type) { | |
405 | case CX18_ENC_STREAM_TYPE_MPG: | |
406 | captype = CAPTURE_CHANNEL_TYPE_MPEG; | |
407 | cx->mpg_data_received = cx->vbi_data_inserted = 0; | |
408 | cx->dualwatch_jiffies = jiffies; | |
409 | cx->dualwatch_stereo_mode = cx->params.audio_properties & 0x300; | |
410 | cx->search_pack_header = 0; | |
411 | break; | |
412 | ||
413 | case CX18_ENC_STREAM_TYPE_TS: | |
414 | captype = CAPTURE_CHANNEL_TYPE_TS; | |
415 | ts = 1; | |
416 | break; | |
417 | case CX18_ENC_STREAM_TYPE_YUV: | |
418 | captype = CAPTURE_CHANNEL_TYPE_YUV; | |
419 | break; | |
420 | case CX18_ENC_STREAM_TYPE_PCM: | |
421 | captype = CAPTURE_CHANNEL_TYPE_PCM; | |
422 | break; | |
423 | case CX18_ENC_STREAM_TYPE_VBI: | |
424 | captype = cx->vbi.sliced_in->service_set ? | |
425 | CAPTURE_CHANNEL_TYPE_SLICED_VBI : CAPTURE_CHANNEL_TYPE_VBI; | |
426 | cx->vbi.frame = 0; | |
427 | cx->vbi.inserted_frame = 0; | |
428 | memset(cx->vbi.sliced_mpeg_size, | |
429 | 0, sizeof(cx->vbi.sliced_mpeg_size)); | |
430 | break; | |
431 | default: | |
432 | return -EINVAL; | |
433 | } | |
434 | s->buffers_stolen = 0; | |
435 | ||
436 | /* mute/unmute video */ | |
437 | cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, | |
438 | s->handle, !!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)); | |
439 | ||
440 | /* Clear Streamoff flags in case left from last capture */ | |
441 | clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); | |
442 | ||
443 | cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); | |
444 | s->handle = data[0]; | |
445 | cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); | |
446 | ||
31554ae5 | 447 | if (atomic_read(&cx->ana_capturing) == 0 && !ts) { |
1c1e45d1 HV |
448 | /* Stuff from Windows, we don't know what it is */ |
449 | cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); | |
450 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); | |
451 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); | |
452 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); | |
453 | cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, s->handle, 12); | |
454 | ||
455 | cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, | |
456 | s->handle, cx->digitizer, cx->digitizer); | |
457 | ||
458 | /* Setup VBI */ | |
459 | if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) | |
460 | cx18_vbi_setup(s); | |
461 | ||
462 | /* assign program index info. | |
463 | Mask 7: select I/P/B, Num_req: 400 max */ | |
464 | cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0); | |
465 | ||
466 | /* Setup API for Stream */ | |
467 | cx2341x_update(cx, cx18_api_func, NULL, &cx->params); | |
468 | } | |
469 | ||
31554ae5 | 470 | if (atomic_read(&cx->tot_capturing) == 0) { |
1c1e45d1 HV |
471 | clear_bit(CX18_F_I_EOS, &cx->i_flags); |
472 | write_reg(7, CX18_DSP0_INTERRUPT_MASK); | |
473 | } | |
474 | ||
475 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, | |
990c81c8 AV |
476 | (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, |
477 | (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); | |
1c1e45d1 HV |
478 | |
479 | list_for_each(p, &s->q_free.list) { | |
480 | struct cx18_buffer *buf = list_entry(p, struct cx18_buffer, list); | |
481 | ||
482 | writel(buf->dma_handle, &cx->scb->cpu_mdl[buf->id].paddr); | |
483 | writel(s->buf_size, &cx->scb->cpu_mdl[buf->id].length); | |
484 | cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, | |
990c81c8 AV |
485 | (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem, |
486 | 1, buf->id, s->buf_size); | |
1c1e45d1 HV |
487 | } |
488 | /* begin_capture */ | |
489 | if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { | |
490 | CX18_DEBUG_WARN("Error starting capture!\n"); | |
491 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
495 | /* you're live! sit back and await interrupts :) */ | |
31554ae5 HV |
496 | if (!ts) |
497 | atomic_inc(&cx->ana_capturing); | |
498 | atomic_inc(&cx->tot_capturing); | |
1c1e45d1 HV |
499 | return 0; |
500 | } | |
501 | ||
502 | void cx18_stop_all_captures(struct cx18 *cx) | |
503 | { | |
504 | int i; | |
505 | ||
506 | for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { | |
507 | struct cx18_stream *s = &cx->streams[i]; | |
508 | ||
509 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) | |
510 | continue; | |
511 | if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) | |
512 | cx18_stop_v4l2_encode_stream(s, 0); | |
513 | } | |
514 | } | |
515 | ||
516 | int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) | |
517 | { | |
518 | struct cx18 *cx = s->cx; | |
519 | unsigned long then; | |
520 | ||
521 | if (s->v4l2dev == NULL && s->dvb.enabled == 0) | |
522 | return -EINVAL; | |
523 | ||
524 | /* This function assumes that you are allowed to stop the capture | |
525 | and that we are actually capturing */ | |
526 | ||
527 | CX18_DEBUG_INFO("Stop Capture\n"); | |
528 | ||
31554ae5 | 529 | if (atomic_read(&cx->tot_capturing) == 0) |
1c1e45d1 HV |
530 | return 0; |
531 | ||
532 | if (s->type == CX18_ENC_STREAM_TYPE_MPG) | |
533 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); | |
534 | else | |
535 | cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); | |
536 | ||
537 | then = jiffies; | |
538 | ||
539 | if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { | |
540 | CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); | |
541 | } | |
542 | ||
31554ae5 HV |
543 | if (s->type != CX18_ENC_STREAM_TYPE_TS) |
544 | atomic_dec(&cx->ana_capturing); | |
545 | atomic_dec(&cx->tot_capturing); | |
1c1e45d1 HV |
546 | |
547 | /* Clear capture and no-read bits */ | |
548 | clear_bit(CX18_F_S_STREAMING, &s->s_flags); | |
549 | ||
550 | cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); | |
551 | s->handle = 0xffffffff; | |
552 | ||
31554ae5 | 553 | if (atomic_read(&cx->tot_capturing) > 0) |
1c1e45d1 HV |
554 | return 0; |
555 | ||
556 | write_reg(5, CX18_DSP0_INTERRUPT_MASK); | |
557 | wake_up(&s->waitq); | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | u32 cx18_find_handle(struct cx18 *cx) | |
563 | { | |
564 | int i; | |
565 | ||
566 | /* find first available handle to be used for global settings */ | |
567 | for (i = 0; i < CX18_MAX_STREAMS; i++) { | |
568 | struct cx18_stream *s = &cx->streams[i]; | |
569 | ||
570 | if (s->v4l2dev && s->handle) | |
571 | return s->handle; | |
572 | } | |
573 | return 0; | |
574 | } |