Commit | Line | Data |
---|---|---|
1a0adaf3 HV |
1 | /* |
2 | file operation functions | |
3 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | |
4 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> | |
5 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include "ivtv-driver.h" | |
23 | #include "ivtv-fileops.h" | |
24 | #include "ivtv-i2c.h" | |
25 | #include "ivtv-queue.h" | |
26 | #include "ivtv-udma.h" | |
27 | #include "ivtv-irq.h" | |
28 | #include "ivtv-vbi.h" | |
29 | #include "ivtv-mailbox.h" | |
33c0fcad | 30 | #include "ivtv-routing.h" |
1a0adaf3 HV |
31 | #include "ivtv-streams.h" |
32 | #include "ivtv-yuv.h" | |
1a0adaf3 | 33 | #include "ivtv-ioctl.h" |
f2100d82 HV |
34 | #include "ivtv-cards.h" |
35 | #include <media/saa7115.h> | |
1a0adaf3 HV |
36 | |
37 | /* This function tries to claim the stream for a specific file descriptor. | |
38 | If no one else is using this stream then the stream is claimed and | |
39 | associated VBI streams are also automatically claimed. | |
40 | Possible error returns: -EBUSY if someone else has claimed | |
41 | the stream or 0 on success. */ | |
42 | int ivtv_claim_stream(struct ivtv_open_id *id, int type) | |
43 | { | |
44 | struct ivtv *itv = id->itv; | |
45 | struct ivtv_stream *s = &itv->streams[type]; | |
46 | struct ivtv_stream *s_vbi; | |
47 | int vbi_type; | |
48 | ||
49 | if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
50 | /* someone already claimed this stream */ | |
51 | if (s->id == id->open_id) { | |
52 | /* yes, this file descriptor did. So that's OK. */ | |
53 | return 0; | |
54 | } | |
55 | if (s->id == -1 && (type == IVTV_DEC_STREAM_TYPE_VBI || | |
56 | type == IVTV_ENC_STREAM_TYPE_VBI)) { | |
57 | /* VBI is handled already internally, now also assign | |
58 | the file descriptor to this stream for external | |
59 | reading of the stream. */ | |
60 | s->id = id->open_id; | |
61 | IVTV_DEBUG_INFO("Start Read VBI\n"); | |
62 | return 0; | |
63 | } | |
64 | /* someone else is using this stream already */ | |
65 | IVTV_DEBUG_INFO("Stream %d is busy\n", type); | |
66 | return -EBUSY; | |
67 | } | |
68 | s->id = id->open_id; | |
69 | if (type == IVTV_DEC_STREAM_TYPE_VBI) { | |
70 | /* Enable reinsertion interrupt */ | |
71 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
72 | } | |
73 | ||
74 | /* IVTV_DEC_STREAM_TYPE_MPG needs to claim IVTV_DEC_STREAM_TYPE_VBI, | |
75 | IVTV_ENC_STREAM_TYPE_MPG needs to claim IVTV_ENC_STREAM_TYPE_VBI | |
76 | (provided VBI insertion is on and sliced VBI is selected), for all | |
77 | other streams we're done */ | |
78 | if (type == IVTV_DEC_STREAM_TYPE_MPG) { | |
79 | vbi_type = IVTV_DEC_STREAM_TYPE_VBI; | |
80 | } else if (type == IVTV_ENC_STREAM_TYPE_MPG && | |
81 | itv->vbi.insert_mpeg && itv->vbi.sliced_in->service_set) { | |
82 | vbi_type = IVTV_ENC_STREAM_TYPE_VBI; | |
83 | } else { | |
84 | return 0; | |
85 | } | |
86 | s_vbi = &itv->streams[vbi_type]; | |
87 | ||
88 | if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) { | |
89 | /* Enable reinsertion interrupt */ | |
90 | if (vbi_type == IVTV_DEC_STREAM_TYPE_VBI) | |
91 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
92 | } | |
93 | /* mark that it is used internally */ | |
94 | set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | /* This function releases a previously claimed stream. It will take into | |
99 | account associated VBI streams. */ | |
100 | void ivtv_release_stream(struct ivtv_stream *s) | |
101 | { | |
102 | struct ivtv *itv = s->itv; | |
103 | struct ivtv_stream *s_vbi; | |
104 | ||
105 | s->id = -1; | |
106 | if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
107 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
108 | /* this stream is still in use internally */ | |
109 | return; | |
110 | } | |
111 | if (!test_and_clear_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
112 | IVTV_DEBUG_WARN("Release stream %s not in use!\n", s->name); | |
113 | return; | |
114 | } | |
115 | ||
116 | ivtv_flush_queues(s); | |
117 | ||
118 | /* disable reinsertion interrupt */ | |
119 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) | |
120 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
121 | ||
122 | /* IVTV_DEC_STREAM_TYPE_MPG needs to release IVTV_DEC_STREAM_TYPE_VBI, | |
123 | IVTV_ENC_STREAM_TYPE_MPG needs to release IVTV_ENC_STREAM_TYPE_VBI, | |
124 | for all other streams we're done */ | |
125 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
126 | s_vbi = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
127 | else if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
128 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
129 | else | |
130 | return; | |
131 | ||
132 | /* clear internal use flag */ | |
133 | if (!test_and_clear_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags)) { | |
134 | /* was already cleared */ | |
135 | return; | |
136 | } | |
137 | if (s_vbi->id != -1) { | |
138 | /* VBI stream still claimed by a file descriptor */ | |
139 | return; | |
140 | } | |
141 | /* disable reinsertion interrupt */ | |
142 | if (s_vbi->type == IVTV_DEC_STREAM_TYPE_VBI) | |
143 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
144 | clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags); | |
145 | ivtv_flush_queues(s_vbi); | |
146 | } | |
147 | ||
148 | static void ivtv_dualwatch(struct ivtv *itv) | |
149 | { | |
150 | struct v4l2_tuner vt; | |
151 | u16 new_bitmap; | |
152 | u16 new_stereo_mode; | |
153 | const u16 stereo_mask = 0x0300; | |
154 | const u16 dual = 0x0200; | |
155 | ||
156 | new_stereo_mode = itv->params.audio_properties & stereo_mask; | |
157 | memset(&vt, 0, sizeof(vt)); | |
158 | ivtv_call_i2c_clients(itv, VIDIOC_G_TUNER, &vt); | |
159 | if (vt.audmode == V4L2_TUNER_MODE_LANG1_LANG2 && (vt.rxsubchans & V4L2_TUNER_SUB_LANG2)) | |
160 | new_stereo_mode = dual; | |
161 | ||
162 | if (new_stereo_mode == itv->dualwatch_stereo_mode) | |
163 | return; | |
164 | ||
165 | new_bitmap = new_stereo_mode | (itv->params.audio_properties & ~stereo_mask); | |
166 | ||
167 | IVTV_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x. new audio_bitmask=0x%ux\n", | |
168 | itv->dualwatch_stereo_mode, new_stereo_mode, new_bitmap); | |
169 | ||
170 | if (ivtv_vapi(itv, CX2341X_ENC_SET_AUDIO_PROPERTIES, 1, new_bitmap) == 0) { | |
171 | itv->dualwatch_stereo_mode = new_stereo_mode; | |
172 | return; | |
173 | } | |
174 | IVTV_DEBUG_INFO("dualwatch: changing stereo flag failed\n"); | |
175 | } | |
176 | ||
177 | static void ivtv_update_pgm_info(struct ivtv *itv) | |
178 | { | |
179 | u32 wr_idx = (read_enc(itv->pgm_info_offset) - itv->pgm_info_offset - 4) / 24; | |
180 | int cnt; | |
181 | int i = 0; | |
182 | ||
183 | if (wr_idx >= itv->pgm_info_num) { | |
184 | IVTV_DEBUG_WARN("Invalid PGM index %d (>= %d)\n", wr_idx, itv->pgm_info_num); | |
185 | return; | |
186 | } | |
187 | cnt = (wr_idx + itv->pgm_info_num - itv->pgm_info_write_idx) % itv->pgm_info_num; | |
188 | while (i < cnt) { | |
189 | int idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
190 | struct v4l2_enc_idx_entry *e = itv->pgm_info + idx; | |
191 | u32 addr = itv->pgm_info_offset + 4 + idx * 24; | |
5614b021 HV |
192 | const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1, |
193 | V4L2_ENC_IDX_FRAME_B, -1, -1, -1 }; | |
194 | // 1=I, 2=P, 4=B | |
1a0adaf3 HV |
195 | |
196 | e->offset = read_enc(addr + 4) + ((u64)read_enc(addr + 8) << 32); | |
197 | if (e->offset > itv->mpg_data_received) { | |
198 | break; | |
199 | } | |
200 | e->offset += itv->vbi_data_inserted; | |
201 | e->length = read_enc(addr); | |
202 | e->pts = read_enc(addr + 16) + ((u64)(read_enc(addr + 20) & 1) << 32); | |
5614b021 | 203 | e->flags = mapping[read_enc(addr + 12) & 7]; |
1a0adaf3 HV |
204 | i++; |
205 | } | |
206 | itv->pgm_info_write_idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
207 | } | |
208 | ||
209 | static struct ivtv_buffer *ivtv_get_buffer(struct ivtv_stream *s, int non_block, int *err) | |
210 | { | |
211 | struct ivtv *itv = s->itv; | |
212 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
213 | struct ivtv_buffer *buf; | |
214 | DEFINE_WAIT(wait); | |
215 | ||
216 | *err = 0; | |
217 | while (1) { | |
218 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) { | |
219 | /* Process pending program info updates and pending VBI data */ | |
220 | ivtv_update_pgm_info(itv); | |
221 | ||
201700d3 | 222 | if (jiffies - itv->dualwatch_jiffies > msecs_to_jiffies(1000)) { |
1a0adaf3 HV |
223 | itv->dualwatch_jiffies = jiffies; |
224 | ivtv_dualwatch(itv); | |
225 | } | |
226 | ||
227 | if (test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
228 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
229 | while ((buf = ivtv_dequeue(s_vbi, &s_vbi->q_full))) { | |
230 | /* byteswap and process VBI data */ | |
231 | ivtv_process_vbi_data(itv, buf, s_vbi->dma_pts, s_vbi->type); | |
232 | ivtv_enqueue(s_vbi, buf, &s_vbi->q_free); | |
233 | } | |
234 | } | |
235 | buf = &itv->vbi.sliced_mpeg_buf; | |
236 | if (buf->readpos != buf->bytesused) { | |
237 | return buf; | |
238 | } | |
239 | } | |
240 | ||
241 | /* do we have leftover data? */ | |
242 | buf = ivtv_dequeue(s, &s->q_io); | |
243 | if (buf) | |
244 | return buf; | |
245 | ||
246 | /* do we have new data? */ | |
247 | buf = ivtv_dequeue(s, &s->q_full); | |
248 | if (buf) { | |
f4071b85 | 249 | if ((buf->b_flags & IVTV_F_B_NEED_BUF_SWAP) == 0) |
1a0adaf3 | 250 | return buf; |
f4071b85 | 251 | buf->b_flags &= ~IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
252 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) |
253 | /* byteswap MPG data */ | |
254 | ivtv_buf_swap(buf); | |
255 | else if (s->type != IVTV_DEC_STREAM_TYPE_VBI) { | |
256 | /* byteswap and process VBI data */ | |
257 | ivtv_process_vbi_data(itv, buf, s->dma_pts, s->type); | |
258 | } | |
259 | return buf; | |
260 | } | |
1a0adaf3 HV |
261 | |
262 | /* return if end of stream */ | |
263 | if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
1a0adaf3 HV |
264 | IVTV_DEBUG_INFO("EOS %s\n", s->name); |
265 | return NULL; | |
266 | } | |
267 | ||
559e196a HV |
268 | /* return if file was opened with O_NONBLOCK */ |
269 | if (non_block) { | |
270 | *err = -EAGAIN; | |
271 | return NULL; | |
272 | } | |
273 | ||
1a0adaf3 HV |
274 | /* wait for more data to arrive */ |
275 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); | |
276 | /* New buffers might have become available before we were added to the waitqueue */ | |
277 | if (!s->q_full.buffers) | |
278 | schedule(); | |
279 | finish_wait(&s->waitq, &wait); | |
280 | if (signal_pending(current)) { | |
281 | /* return if a signal was received */ | |
282 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
283 | *err = -EINTR; | |
284 | return NULL; | |
285 | } | |
286 | } | |
287 | } | |
288 | ||
289 | static void ivtv_setup_sliced_vbi_buf(struct ivtv *itv) | |
290 | { | |
291 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
292 | ||
293 | itv->vbi.sliced_mpeg_buf.buf = itv->vbi.sliced_mpeg_data[idx]; | |
294 | itv->vbi.sliced_mpeg_buf.bytesused = itv->vbi.sliced_mpeg_size[idx]; | |
295 | itv->vbi.sliced_mpeg_buf.readpos = 0; | |
296 | } | |
297 | ||
298 | static size_t ivtv_copy_buf_to_user(struct ivtv_stream *s, struct ivtv_buffer *buf, | |
299 | char __user *ubuf, size_t ucount) | |
300 | { | |
301 | struct ivtv *itv = s->itv; | |
302 | size_t len = buf->bytesused - buf->readpos; | |
303 | ||
304 | if (len > ucount) len = ucount; | |
305 | if (itv->vbi.insert_mpeg && s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
306 | itv->vbi.sliced_in->service_set && buf != &itv->vbi.sliced_mpeg_buf) { | |
307 | const char *start = buf->buf + buf->readpos; | |
308 | const char *p = start + 1; | |
309 | const u8 *q; | |
310 | u8 ch = itv->search_pack_header ? 0xba : 0xe0; | |
311 | int stuffing, i; | |
312 | ||
313 | while (start + len > p && (q = memchr(p, 0, start + len - p))) { | |
314 | p = q + 1; | |
315 | if ((char *)q + 15 >= buf->buf + buf->bytesused || | |
316 | q[1] != 0 || q[2] != 1 || q[3] != ch) { | |
317 | continue; | |
318 | } | |
319 | if (!itv->search_pack_header) { | |
320 | if ((q[6] & 0xc0) != 0x80) | |
321 | continue; | |
322 | if (((q[7] & 0xc0) == 0x80 && (q[9] & 0xf0) == 0x20) || | |
323 | ((q[7] & 0xc0) == 0xc0 && (q[9] & 0xf0) == 0x30)) { | |
324 | ch = 0xba; | |
325 | itv->search_pack_header = 1; | |
326 | p = q + 9; | |
327 | } | |
328 | continue; | |
329 | } | |
330 | stuffing = q[13] & 7; | |
331 | /* all stuffing bytes must be 0xff */ | |
332 | for (i = 0; i < stuffing; i++) | |
333 | if (q[14 + i] != 0xff) | |
334 | break; | |
335 | if (i == stuffing && (q[4] & 0xc4) == 0x44 && (q[12] & 3) == 3 && | |
336 | q[14 + stuffing] == 0 && q[15 + stuffing] == 0 && | |
337 | q[16 + stuffing] == 1) { | |
338 | itv->search_pack_header = 0; | |
339 | len = (char *)q - start; | |
340 | ivtv_setup_sliced_vbi_buf(itv); | |
341 | break; | |
342 | } | |
343 | } | |
344 | } | |
345 | if (copy_to_user(ubuf, (u8 *)buf->buf + buf->readpos, len)) { | |
346 | IVTV_DEBUG_WARN("copy %zd bytes to user failed for %s\n", len, s->name); | |
347 | return -EFAULT; | |
348 | } | |
349 | /*IVTV_INFO("copied %lld %d %d %d %d %d vbi %d\n", itv->mpg_data_received, len, ucount, | |
350 | buf->readpos, buf->bytesused, buf->bytesused - buf->readpos - len, | |
351 | buf == &itv->vbi.sliced_mpeg_buf); */ | |
352 | buf->readpos += len; | |
353 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && buf != &itv->vbi.sliced_mpeg_buf) | |
354 | itv->mpg_data_received += len; | |
355 | return len; | |
356 | } | |
357 | ||
358 | static ssize_t ivtv_read(struct ivtv_stream *s, char __user *ubuf, size_t tot_count, int non_block) | |
359 | { | |
360 | struct ivtv *itv = s->itv; | |
361 | size_t tot_written = 0; | |
362 | int single_frame = 0; | |
363 | ||
364 | if (atomic_read(&itv->capturing) == 0 && s->id == -1) { | |
365 | /* shouldn't happen */ | |
366 | IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name); | |
367 | return -EIO; | |
368 | } | |
369 | ||
370 | /* Each VBI buffer is one frame, the v4l2 API says that for VBI the frames should | |
371 | arrive one-by-one, so make sure we never output more than one VBI frame at a time */ | |
372 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || | |
373 | (s->type == IVTV_ENC_STREAM_TYPE_VBI && itv->vbi.sliced_in->service_set)) | |
374 | single_frame = 1; | |
375 | ||
376 | for (;;) { | |
377 | struct ivtv_buffer *buf; | |
378 | int rc; | |
379 | ||
380 | buf = ivtv_get_buffer(s, non_block, &rc); | |
559e196a HV |
381 | /* if there is no data available... */ |
382 | if (buf == NULL) { | |
383 | /* if we got data, then return that regardless */ | |
384 | if (tot_written) | |
385 | break; | |
386 | /* EOS condition */ | |
387 | if (rc == 0) { | |
388 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
389 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
390 | ivtv_release_stream(s); | |
391 | } | |
392 | /* set errno */ | |
1a0adaf3 | 393 | return rc; |
559e196a | 394 | } |
1a0adaf3 HV |
395 | rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written); |
396 | if (buf != &itv->vbi.sliced_mpeg_buf) { | |
397 | ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io); | |
398 | } | |
399 | else if (buf->readpos == buf->bytesused) { | |
400 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
401 | itv->vbi.sliced_mpeg_size[idx] = 0; | |
402 | itv->vbi.inserted_frame++; | |
403 | itv->vbi_data_inserted += buf->bytesused; | |
404 | } | |
405 | if (rc < 0) | |
406 | return rc; | |
407 | tot_written += rc; | |
408 | ||
409 | if (tot_written == tot_count || single_frame) | |
410 | break; | |
411 | } | |
412 | return tot_written; | |
413 | } | |
414 | ||
415 | static ssize_t ivtv_read_pos(struct ivtv_stream *s, char __user *ubuf, size_t count, | |
416 | loff_t *pos, int non_block) | |
417 | { | |
418 | ssize_t rc = count ? ivtv_read(s, ubuf, count, non_block) : 0; | |
419 | struct ivtv *itv = s->itv; | |
420 | ||
1aa32c2f | 421 | IVTV_DEBUG_HI_FILE("read %zd from %s, got %zd\n", count, s->name, rc); |
1a0adaf3 HV |
422 | if (rc > 0) |
423 | pos += rc; | |
424 | return rc; | |
425 | } | |
426 | ||
427 | int ivtv_start_capture(struct ivtv_open_id *id) | |
428 | { | |
429 | struct ivtv *itv = id->itv; | |
430 | struct ivtv_stream *s = &itv->streams[id->type]; | |
431 | struct ivtv_stream *s_vbi; | |
432 | ||
433 | if (s->type == IVTV_ENC_STREAM_TYPE_RAD || | |
434 | s->type == IVTV_DEC_STREAM_TYPE_MPG || | |
435 | s->type == IVTV_DEC_STREAM_TYPE_YUV || | |
436 | s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
437 | /* you cannot read from these stream types. */ | |
438 | return -EPERM; | |
439 | } | |
440 | ||
441 | /* Try to claim this stream. */ | |
442 | if (ivtv_claim_stream(id, s->type)) | |
443 | return -EBUSY; | |
444 | ||
445 | /* This stream does not need to start capturing */ | |
446 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
447 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | /* If capture is already in progress, then we also have to | |
452 | do nothing extra. */ | |
453 | if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
454 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* Start VBI capture if required */ | |
459 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
460 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
461 | test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
462 | !test_and_set_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
463 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is claimed | |
464 | automatically when the MPG stream is claimed. | |
465 | We only need to start the VBI capturing. */ | |
466 | if (ivtv_start_v4l2_encode_stream(s_vbi)) { | |
467 | IVTV_DEBUG_WARN("VBI capture start failed\n"); | |
468 | ||
469 | /* Failure, clean up and return an error */ | |
470 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
471 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
472 | /* also releases the associated VBI stream */ | |
473 | ivtv_release_stream(s); | |
474 | return -EIO; | |
475 | } | |
476 | IVTV_DEBUG_INFO("VBI insertion started\n"); | |
477 | } | |
478 | ||
479 | /* Tell the card to start capturing */ | |
480 | if (!ivtv_start_v4l2_encode_stream(s)) { | |
481 | /* We're done */ | |
482 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
483 | /* Resume a possibly paused encoder */ | |
484 | if (test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags)) | |
485 | ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* failure, clean up */ | |
490 | IVTV_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name); | |
491 | ||
492 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is released | |
493 | automatically when the MPG stream is released. | |
494 | We only need to stop the VBI capturing. */ | |
495 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
496 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
497 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
498 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
499 | } | |
500 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
501 | ivtv_release_stream(s); | |
502 | return -EIO; | |
503 | } | |
504 | ||
505 | ssize_t ivtv_v4l2_read(struct file * filp, char __user *buf, size_t count, loff_t * pos) | |
506 | { | |
507 | struct ivtv_open_id *id = filp->private_data; | |
508 | struct ivtv *itv = id->itv; | |
509 | struct ivtv_stream *s = &itv->streams[id->type]; | |
510 | int rc; | |
511 | ||
1aa32c2f | 512 | IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name); |
1a0adaf3 | 513 | |
baa4072d | 514 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 | 515 | rc = ivtv_start_capture(id); |
baa4072d | 516 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
517 | if (rc) |
518 | return rc; | |
519 | return ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK); | |
520 | } | |
521 | ||
522 | int ivtv_start_decoding(struct ivtv_open_id *id, int speed) | |
523 | { | |
524 | struct ivtv *itv = id->itv; | |
525 | struct ivtv_stream *s = &itv->streams[id->type]; | |
526 | ||
527 | if (atomic_read(&itv->decoding) == 0) { | |
528 | if (ivtv_claim_stream(id, s->type)) { | |
529 | /* someone else is using this stream already */ | |
530 | IVTV_DEBUG_WARN("start decode, stream already claimed\n"); | |
531 | return -EBUSY; | |
532 | } | |
533 | ivtv_start_v4l2_decode_stream(s, 0); | |
534 | } | |
535 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
536 | return ivtv_set_speed(itv, speed); | |
537 | return 0; | |
538 | } | |
539 | ||
540 | ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) | |
541 | { | |
542 | struct ivtv_open_id *id = filp->private_data; | |
543 | struct ivtv *itv = id->itv; | |
544 | struct ivtv_stream *s = &itv->streams[id->type]; | |
545 | struct ivtv_buffer *buf; | |
546 | struct ivtv_queue q; | |
547 | int bytes_written = 0; | |
548 | int mode; | |
549 | int rc; | |
550 | DEFINE_WAIT(wait); | |
551 | ||
1aa32c2f | 552 | IVTV_DEBUG_HI_FILE("write %zd bytes to %s\n", count, s->name); |
1a0adaf3 HV |
553 | |
554 | if (s->type != IVTV_DEC_STREAM_TYPE_MPG && | |
555 | s->type != IVTV_DEC_STREAM_TYPE_YUV && | |
556 | s->type != IVTV_DEC_STREAM_TYPE_VOUT) | |
557 | /* not decoder streams */ | |
558 | return -EPERM; | |
559 | ||
560 | /* Try to claim this stream */ | |
561 | if (ivtv_claim_stream(id, s->type)) | |
562 | return -EBUSY; | |
563 | ||
564 | /* This stream does not need to start any decoding */ | |
565 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
2f3a9893 HV |
566 | int elems = count / sizeof(struct v4l2_sliced_vbi_data); |
567 | ||
1a0adaf3 | 568 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); |
2f3a9893 HV |
569 | ivtv_write_vbi(itv, (const struct v4l2_sliced_vbi_data *)user_buf, elems); |
570 | return elems * sizeof(struct v4l2_sliced_vbi_data); | |
1a0adaf3 HV |
571 | } |
572 | ||
573 | mode = s->type == IVTV_DEC_STREAM_TYPE_MPG ? OUT_MPG : OUT_YUV; | |
574 | ||
575 | if (ivtv_set_output_mode(itv, mode) != mode) { | |
576 | ivtv_release_stream(s); | |
577 | return -EBUSY; | |
578 | } | |
579 | ivtv_queue_init(&q); | |
580 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
581 | ||
582 | retry: | |
583 | for (;;) { | |
584 | /* Gather buffers */ | |
585 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_io))) | |
586 | ivtv_enqueue(s, buf, &q); | |
587 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_free))) { | |
588 | ivtv_enqueue(s, buf, &q); | |
589 | } | |
590 | if (q.buffers) | |
591 | break; | |
592 | if (filp->f_flags & O_NONBLOCK) | |
593 | return -EAGAIN; | |
594 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); | |
595 | /* New buffers might have become free before we were added to the waitqueue */ | |
596 | if (!s->q_free.buffers) | |
597 | schedule(); | |
598 | finish_wait(&s->waitq, &wait); | |
599 | if (signal_pending(current)) { | |
600 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
601 | return -EINTR; | |
602 | } | |
603 | } | |
604 | ||
605 | /* copy user data into buffers */ | |
606 | while ((buf = ivtv_dequeue(s, &q))) { | |
607 | /* Make sure we really got all the user data */ | |
608 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, count); | |
609 | ||
610 | if (rc < 0) { | |
611 | ivtv_queue_move(s, &q, NULL, &s->q_free, 0); | |
612 | return rc; | |
613 | } | |
614 | user_buf += rc; | |
615 | count -= rc; | |
616 | bytes_written += rc; | |
617 | ||
618 | if (buf->bytesused != s->buf_size) { | |
619 | /* incomplete, leave in q_io for next time */ | |
620 | ivtv_enqueue(s, buf, &s->q_io); | |
621 | break; | |
622 | } | |
623 | /* Byteswap MPEG buffer */ | |
624 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
625 | ivtv_buf_swap(buf); | |
626 | ivtv_enqueue(s, buf, &s->q_full); | |
627 | } | |
628 | ||
629 | /* Start decoder (returns 0 if already started) */ | |
baa4072d | 630 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 | 631 | rc = ivtv_start_decoding(id, itv->speed); |
baa4072d | 632 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
633 | if (rc) { |
634 | IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); | |
635 | ||
636 | /* failure, clean up */ | |
637 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
638 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
639 | return rc; | |
640 | } | |
641 | if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) { | |
642 | if (s->q_full.length >= itv->dma_data_req_size) { | |
643 | int got_sig; | |
644 | ||
645 | prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); | |
646 | while (!(got_sig = signal_pending(current)) && | |
647 | test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) { | |
648 | schedule(); | |
649 | } | |
650 | finish_wait(&itv->dma_waitq, &wait); | |
651 | if (got_sig) { | |
652 | IVTV_DEBUG_INFO("User interrupted %s\n", s->name); | |
653 | return -EINTR; | |
654 | } | |
655 | ||
656 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
657 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
658 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 1); | |
659 | } | |
660 | } | |
661 | /* more user data is available, wait until buffers become free | |
662 | to transfer the rest. */ | |
663 | if (count && !(filp->f_flags & O_NONBLOCK)) | |
664 | goto retry; | |
1aa32c2f | 665 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); |
1a0adaf3 HV |
666 | return bytes_written; |
667 | } | |
668 | ||
669 | unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table *wait) | |
670 | { | |
671 | struct ivtv_open_id *id = filp->private_data; | |
672 | struct ivtv *itv = id->itv; | |
673 | struct ivtv_stream *s = &itv->streams[id->type]; | |
674 | int res = 0; | |
675 | ||
676 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 677 | IVTV_DEBUG_HI_FILE("Decoder poll\n"); |
1a0adaf3 HV |
678 | poll_wait(filp, &s->waitq, wait); |
679 | ||
680 | set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
681 | if (test_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags) || | |
682 | test_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags)) | |
683 | res = POLLPRI; | |
684 | ||
685 | /* Allow write if buffers are available for writing */ | |
686 | if (s->q_free.buffers) | |
687 | res |= POLLOUT | POLLWRNORM; | |
688 | return res; | |
689 | } | |
690 | ||
691 | unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait) | |
692 | { | |
693 | struct ivtv_open_id *id = filp->private_data; | |
694 | struct ivtv *itv = id->itv; | |
695 | struct ivtv_stream *s = &itv->streams[id->type]; | |
696 | int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
697 | ||
698 | /* Start a capture if there is none */ | |
699 | if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
baa4072d | 700 | int rc; |
1a0adaf3 | 701 | |
baa4072d HV |
702 | mutex_lock(&itv->serialize_lock); |
703 | rc = ivtv_start_capture(id); | |
704 | mutex_unlock(&itv->serialize_lock); | |
1a0adaf3 HV |
705 | if (rc) { |
706 | IVTV_DEBUG_INFO("Could not start capture for %s (%d)\n", | |
707 | s->name, rc); | |
708 | return POLLERR; | |
709 | } | |
1aa32c2f | 710 | IVTV_DEBUG_FILE("Encoder poll started capture\n"); |
1a0adaf3 HV |
711 | } |
712 | ||
713 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 714 | IVTV_DEBUG_HI_FILE("Encoder poll\n"); |
1a0adaf3 HV |
715 | poll_wait(filp, &s->waitq, wait); |
716 | ||
717 | if (eof || s->q_full.length) | |
718 | return POLLIN | POLLRDNORM; | |
719 | return 0; | |
720 | } | |
721 | ||
722 | void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end) | |
723 | { | |
724 | struct ivtv *itv = id->itv; | |
725 | struct ivtv_stream *s = &itv->streams[id->type]; | |
726 | ||
1aa32c2f | 727 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 HV |
728 | |
729 | /* 'Unclaim' this stream */ | |
730 | ||
731 | /* Stop capturing */ | |
732 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
733 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
734 | ||
735 | IVTV_DEBUG_INFO("close stopping capture\n"); | |
736 | /* Special case: a running VBI capture for VBI insertion | |
737 | in the mpeg stream. Need to stop that too. */ | |
738 | if (id->type == IVTV_ENC_STREAM_TYPE_MPG && | |
739 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags) && | |
740 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
741 | IVTV_DEBUG_INFO("close stopping embedded VBI capture\n"); | |
742 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
743 | } | |
744 | if ((id->type == IVTV_DEC_STREAM_TYPE_VBI || | |
745 | id->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
746 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
747 | /* Also used internally, don't stop capturing */ | |
748 | s->id = -1; | |
749 | } | |
750 | else { | |
751 | ivtv_stop_v4l2_encode_stream(s, gop_end); | |
752 | } | |
753 | } | |
559e196a HV |
754 | if (!gop_end) { |
755 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
756 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
757 | ivtv_release_stream(s); | |
758 | } | |
1a0adaf3 HV |
759 | } |
760 | ||
31ec1356 | 761 | static void ivtv_stop_decoding(struct ivtv_open_id *id, int flags, u64 pts) |
1a0adaf3 HV |
762 | { |
763 | struct ivtv *itv = id->itv; | |
764 | struct ivtv_stream *s = &itv->streams[id->type]; | |
765 | ||
1aa32c2f | 766 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 HV |
767 | |
768 | /* Stop decoding */ | |
769 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
770 | IVTV_DEBUG_INFO("close stopping decode\n"); | |
771 | ||
772 | ivtv_stop_v4l2_decode_stream(s, flags, pts); | |
ad8ff0f1 | 773 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
774 | } |
775 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
776 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
777 | if (id->type == IVTV_DEC_STREAM_TYPE_YUV && test_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags)) { | |
778 | /* Restore registers we've changed & clean up any mess we've made */ | |
779 | ivtv_yuv_close(itv); | |
780 | } | |
ad8ff0f1 | 781 | if (itv->output_mode == OUT_UDMA_YUV && id->yuv_frames) |
cb50f548 | 782 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
783 | |
784 | itv->speed = 0; | |
ac425144 | 785 | clear_bit(IVTV_F_I_DEC_PAUSED, &itv->i_flags); |
1a0adaf3 HV |
786 | ivtv_release_stream(s); |
787 | } | |
788 | ||
789 | int ivtv_v4l2_close(struct inode *inode, struct file *filp) | |
790 | { | |
791 | struct ivtv_open_id *id = filp->private_data; | |
792 | struct ivtv *itv = id->itv; | |
793 | struct ivtv_stream *s = &itv->streams[id->type]; | |
794 | ||
1aa32c2f | 795 | IVTV_DEBUG_FILE("close %s\n", s->name); |
1a0adaf3 | 796 | |
d46c17d7 HV |
797 | v4l2_prio_close(&itv->prio, &id->prio); |
798 | ||
1a0adaf3 HV |
799 | /* Easy case first: this stream was never claimed by us */ |
800 | if (s->id != id->open_id) { | |
801 | kfree(id); | |
802 | return 0; | |
803 | } | |
804 | ||
805 | /* 'Unclaim' this stream */ | |
806 | ||
807 | /* Stop radio */ | |
baa4072d | 808 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
809 | if (id->type == IVTV_ENC_STREAM_TYPE_RAD) { |
810 | /* Closing radio device, return to TV mode */ | |
811 | ivtv_mute(itv); | |
812 | /* Mark that the radio is no longer in use */ | |
813 | clear_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
814 | /* Switch tuner to TV */ | |
815 | ivtv_call_i2c_clients(itv, VIDIOC_S_STD, &itv->std); | |
816 | /* Select correct audio input (i.e. TV tuner or Line in) */ | |
817 | ivtv_audio_set_io(itv); | |
f2100d82 HV |
818 | if (itv->hw_flags & IVTV_HW_SAA711X) |
819 | { | |
820 | struct v4l2_crystal_freq crystal_freq; | |
821 | crystal_freq.freq = SAA7115_FREQ_32_11_MHZ; | |
822 | crystal_freq.flags = 0; | |
823 | ivtv_saa7115(itv, VIDIOC_INT_S_CRYSTAL_FREQ, &crystal_freq); | |
824 | } | |
2f7362ef HV |
825 | if (atomic_read(&itv->capturing) > 0) { |
826 | /* Undo video mute */ | |
827 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, | |
828 | itv->params.video_mute | (itv->params.video_mute_yuv << 8)); | |
829 | } | |
1a0adaf3 HV |
830 | /* Done! Unmute and continue. */ |
831 | ivtv_unmute(itv); | |
832 | ivtv_release_stream(s); | |
833 | } else if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) { | |
5a338c38 HV |
834 | struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT]; |
835 | ||
1a0adaf3 | 836 | ivtv_stop_decoding(id, VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY, 0); |
5a338c38 HV |
837 | |
838 | /* If all output streams are closed, and if the user doesn't have | |
2f3a9893 | 839 | IVTV_DEC_STREAM_TYPE_VOUT open, then disable CC on TV-out. */ |
5a338c38 | 840 | if (itv->output_mode == OUT_NONE && !test_bit(IVTV_F_S_APPL_IO, &s_vout->s_flags)) { |
2f3a9893 HV |
841 | /* disable CC on TV-out */ |
842 | ivtv_disable_cc(itv); | |
5a338c38 | 843 | } |
1a0adaf3 HV |
844 | } else { |
845 | ivtv_stop_capture(id, 0); | |
846 | } | |
847 | kfree(id); | |
baa4072d | 848 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
849 | return 0; |
850 | } | |
851 | ||
baa4072d | 852 | static int ivtv_serialized_open(struct ivtv_stream *s, struct file *filp) |
1a0adaf3 | 853 | { |
baa4072d | 854 | struct ivtv *itv = s->itv; |
1a0adaf3 | 855 | struct ivtv_open_id *item; |
1a0adaf3 | 856 | |
1aa32c2f | 857 | IVTV_DEBUG_FILE("open %s\n", s->name); |
c976bc82 | 858 | |
baa4072d | 859 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG && |
1a0adaf3 HV |
860 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags)) |
861 | return -EBUSY; | |
862 | ||
baa4072d | 863 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && |
1a0adaf3 HV |
864 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_MPG].s_flags)) |
865 | return -EBUSY; | |
866 | ||
baa4072d | 867 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 HV |
868 | if (read_reg(0x82c) == 0) { |
869 | IVTV_ERR("Tried to open YUV output device but need to send data to mpeg decoder before it can be used\n"); | |
870 | /* return -ENODEV; */ | |
871 | } | |
872 | ivtv_udma_alloc(itv); | |
873 | } | |
874 | ||
875 | /* Allocate memory */ | |
876 | item = kmalloc(sizeof(struct ivtv_open_id), GFP_KERNEL); | |
877 | if (NULL == item) { | |
878 | IVTV_DEBUG_WARN("nomem on v4l2 open\n"); | |
879 | return -ENOMEM; | |
880 | } | |
881 | item->itv = itv; | |
baa4072d | 882 | item->type = s->type; |
d46c17d7 | 883 | v4l2_prio_open(&itv->prio, &item->prio); |
1a0adaf3 HV |
884 | |
885 | item->open_id = itv->open_id++; | |
886 | filp->private_data = item; | |
887 | ||
888 | if (item->type == IVTV_ENC_STREAM_TYPE_RAD) { | |
889 | /* Try to claim this stream */ | |
890 | if (ivtv_claim_stream(item, item->type)) { | |
891 | /* No, it's already in use */ | |
892 | kfree(item); | |
893 | return -EBUSY; | |
894 | } | |
895 | ||
3562c43b HV |
896 | if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) { |
897 | if (atomic_read(&itv->capturing) > 0) { | |
898 | /* switching to radio while capture is | |
899 | in progress is not polite */ | |
af3420b4 | 900 | ivtv_release_stream(s); |
3562c43b HV |
901 | kfree(item); |
902 | return -EBUSY; | |
903 | } | |
904 | } | |
905 | /* Mark that the radio is being used. */ | |
906 | set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
1a0adaf3 HV |
907 | /* We have the radio */ |
908 | ivtv_mute(itv); | |
909 | /* Switch tuner to radio */ | |
910 | ivtv_call_i2c_clients(itv, AUDC_SET_RADIO, NULL); | |
1a0adaf3 HV |
911 | /* Select the correct audio input (i.e. radio tuner) */ |
912 | ivtv_audio_set_io(itv); | |
f2100d82 HV |
913 | if (itv->hw_flags & IVTV_HW_SAA711X) |
914 | { | |
915 | struct v4l2_crystal_freq crystal_freq; | |
916 | crystal_freq.freq = SAA7115_FREQ_32_11_MHZ; | |
917 | crystal_freq.flags = SAA7115_FREQ_FL_APLL; | |
918 | ivtv_saa7115(itv, VIDIOC_INT_S_CRYSTAL_FREQ, &crystal_freq); | |
919 | } | |
1a0adaf3 HV |
920 | /* Done! Unmute and continue. */ |
921 | ivtv_unmute(itv); | |
922 | } | |
923 | ||
924 | /* YUV or MPG Decoding Mode? */ | |
baa4072d | 925 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) |
1a0adaf3 | 926 | clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
baa4072d | 927 | else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) |
1a0adaf3 | 928 | set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
baa4072d HV |
929 | return 0; |
930 | } | |
931 | ||
932 | int ivtv_v4l2_open(struct inode *inode, struct file *filp) | |
933 | { | |
934 | int res, x, y = 0; | |
935 | struct ivtv *itv = NULL; | |
936 | struct ivtv_stream *s = NULL; | |
937 | int minor = iminor(inode); | |
938 | ||
939 | /* Find which card this open was on */ | |
940 | spin_lock(&ivtv_cards_lock); | |
941 | for (x = 0; itv == NULL && x < ivtv_cards_active; x++) { | |
942 | /* find out which stream this open was on */ | |
943 | for (y = 0; y < IVTV_MAX_STREAMS; y++) { | |
944 | s = &ivtv_cards[x]->streams[y]; | |
945 | if (s->v4l2dev && s->v4l2dev->minor == minor) { | |
946 | itv = ivtv_cards[x]; | |
947 | break; | |
948 | } | |
949 | } | |
1a0adaf3 | 950 | } |
baa4072d | 951 | spin_unlock(&ivtv_cards_lock); |
1a0adaf3 | 952 | |
baa4072d HV |
953 | if (itv == NULL) { |
954 | /* Couldn't find a device registered | |
955 | on that minor, shouldn't happen! */ | |
7e7f05ca | 956 | printk(KERN_WARNING "No ivtv device found on minor %d\n", minor); |
baa4072d HV |
957 | return -ENXIO; |
958 | } | |
959 | ||
960 | mutex_lock(&itv->serialize_lock); | |
961 | if (ivtv_init_on_first_open(itv)) { | |
962 | IVTV_ERR("Failed to initialize on minor %d\n", minor); | |
963 | mutex_unlock(&itv->serialize_lock); | |
964 | return -ENXIO; | |
965 | } | |
966 | res = ivtv_serialized_open(s, filp); | |
967 | mutex_unlock(&itv->serialize_lock); | |
968 | return res; | |
1a0adaf3 HV |
969 | } |
970 | ||
971 | void ivtv_mute(struct ivtv *itv) | |
972 | { | |
1a0adaf3 HV |
973 | if (atomic_read(&itv->capturing)) |
974 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 1); | |
1a0adaf3 HV |
975 | IVTV_DEBUG_INFO("Mute\n"); |
976 | } | |
977 | ||
978 | void ivtv_unmute(struct ivtv *itv) | |
979 | { | |
1a0adaf3 | 980 | if (atomic_read(&itv->capturing)) { |
3562c43b | 981 | ivtv_msleep_timeout(100, 0); |
1a0adaf3 HV |
982 | ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); |
983 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 0); | |
984 | } | |
1a0adaf3 HV |
985 | IVTV_DEBUG_INFO("Unmute\n"); |
986 | } |