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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Driver for Digigram VX soundcards | |
3 | * | |
4 | * PCM part | |
5 | * | |
6 | * Copyright (c) 2002,2003 by Takashi Iwai <tiwai@suse.de> | |
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 02111-1307 USA | |
21 | * | |
22 | * | |
23 | * STRATEGY | |
24 | * for playback, we send series of "chunks", which size is equal with the | |
25 | * IBL size, typically 126 samples. at each end of chunk, the end-of-buffer | |
26 | * interrupt is notified, and the interrupt handler will feed the next chunk. | |
27 | * | |
28 | * the current position is calculated from the sample count RMH. | |
29 | * pipe->transferred is the counter of data which has been already transferred. | |
30 | * if this counter reaches to the period size, snd_pcm_period_elapsed() will | |
31 | * be issued. | |
32 | * | |
33 | * for capture, the situation is much easier. | |
34 | * to get a low latency response, we'll check the capture streams at each | |
35 | * interrupt (capture stream has no EOB notification). if the pending | |
36 | * data is accumulated to the period size, snd_pcm_period_elapsed() is | |
37 | * called and the pointer is updated. | |
38 | * | |
39 | * the current point of read buffer is kept in pipe->hw_ptr. note that | |
40 | * this is in bytes. | |
41 | * | |
42 | * | |
43 | * TODO | |
44 | * - linked trigger for full-duplex mode. | |
45 | * - scheduled action on the stream. | |
46 | */ | |
47 | ||
1da177e4 | 48 | #include <linux/slab.h> |
1da177e4 LT |
49 | #include <linux/delay.h> |
50 | #include <sound/core.h> | |
51 | #include <sound/asoundef.h> | |
52 | #include <sound/pcm.h> | |
53 | #include <sound/vx_core.h> | |
54 | #include "vx_cmd.h" | |
55 | ||
56 | ||
1da177e4 LT |
57 | /* |
58 | * read three pending pcm bytes via inb() | |
59 | */ | |
af26367f TI |
60 | static void vx_pcm_read_per_bytes(struct vx_core *chip, struct snd_pcm_runtime *runtime, |
61 | struct vx_pipe *pipe) | |
1da177e4 LT |
62 | { |
63 | int offset = pipe->hw_ptr; | |
64 | unsigned char *buf = (unsigned char *)(runtime->dma_area + offset); | |
65 | *buf++ = vx_inb(chip, RXH); | |
66 | if (++offset >= pipe->buffer_bytes) { | |
67 | offset = 0; | |
68 | buf = (unsigned char *)runtime->dma_area; | |
69 | } | |
70 | *buf++ = vx_inb(chip, RXM); | |
71 | if (++offset >= pipe->buffer_bytes) { | |
72 | offset = 0; | |
73 | buf = (unsigned char *)runtime->dma_area; | |
74 | } | |
75 | *buf++ = vx_inb(chip, RXL); | |
76 | if (++offset >= pipe->buffer_bytes) { | |
77 | offset = 0; | |
78 | buf = (unsigned char *)runtime->dma_area; | |
79 | } | |
80 | pipe->hw_ptr = offset; | |
81 | } | |
82 | ||
83 | /* | |
84 | * vx_set_pcx_time - convert from the PC time to the RMH status time. | |
85 | * @pc_time: the pointer for the PC-time to set | |
86 | * @dsp_time: the pointer for RMH status time array | |
87 | */ | |
af26367f TI |
88 | static void vx_set_pcx_time(struct vx_core *chip, pcx_time_t *pc_time, |
89 | unsigned int *dsp_time) | |
1da177e4 LT |
90 | { |
91 | dsp_time[0] = (unsigned int)((*pc_time) >> 24) & PCX_TIME_HI_MASK; | |
92 | dsp_time[1] = (unsigned int)(*pc_time) & MASK_DSP_WORD; | |
93 | } | |
94 | ||
95 | /* | |
96 | * vx_set_differed_time - set the differed time if specified | |
97 | * @rmh: the rmh record to modify | |
98 | * @pipe: the pipe to be checked | |
99 | * | |
100 | * if the pipe is programmed with the differed time, set the DSP time | |
101 | * on the rmh and changes its command length. | |
102 | * | |
103 | * returns the increase of the command length. | |
104 | */ | |
af26367f TI |
105 | static int vx_set_differed_time(struct vx_core *chip, struct vx_rmh *rmh, |
106 | struct vx_pipe *pipe) | |
1da177e4 LT |
107 | { |
108 | /* Update The length added to the RMH command by the timestamp */ | |
109 | if (! (pipe->differed_type & DC_DIFFERED_DELAY)) | |
110 | return 0; | |
111 | ||
112 | /* Set the T bit */ | |
113 | rmh->Cmd[0] |= DSP_DIFFERED_COMMAND_MASK; | |
114 | ||
115 | /* Time stamp is the 1st following parameter */ | |
116 | vx_set_pcx_time(chip, &pipe->pcx_time, &rmh->Cmd[1]); | |
117 | ||
118 | /* Add the flags to a notified differed command */ | |
119 | if (pipe->differed_type & DC_NOTIFY_DELAY) | |
120 | rmh->Cmd[1] |= NOTIFY_MASK_TIME_HIGH ; | |
121 | ||
122 | /* Add the flags to a multiple differed command */ | |
123 | if (pipe->differed_type & DC_MULTIPLE_DELAY) | |
124 | rmh->Cmd[1] |= MULTIPLE_MASK_TIME_HIGH; | |
125 | ||
126 | /* Add the flags to a stream-time differed command */ | |
127 | if (pipe->differed_type & DC_STREAM_TIME_DELAY) | |
128 | rmh->Cmd[1] |= STREAM_MASK_TIME_HIGH; | |
129 | ||
130 | rmh->LgCmd += 2; | |
131 | return 2; | |
132 | } | |
133 | ||
134 | /* | |
135 | * vx_set_stream_format - send the stream format command | |
136 | * @pipe: the affected pipe | |
137 | * @data: format bitmask | |
138 | */ | |
af26367f TI |
139 | static int vx_set_stream_format(struct vx_core *chip, struct vx_pipe *pipe, |
140 | unsigned int data) | |
1da177e4 LT |
141 | { |
142 | struct vx_rmh rmh; | |
143 | ||
144 | vx_init_rmh(&rmh, pipe->is_capture ? | |
145 | CMD_FORMAT_STREAM_IN : CMD_FORMAT_STREAM_OUT); | |
146 | rmh.Cmd[0] |= pipe->number << FIELD_SIZE; | |
147 | ||
148 | /* Command might be longer since we may have to add a timestamp */ | |
149 | vx_set_differed_time(chip, &rmh, pipe); | |
150 | ||
151 | rmh.Cmd[rmh.LgCmd] = (data & 0xFFFFFF00) >> 8; | |
152 | rmh.Cmd[rmh.LgCmd + 1] = (data & 0xFF) << 16 /*| (datal & 0xFFFF00) >> 8*/; | |
153 | rmh.LgCmd += 2; | |
154 | ||
155 | return vx_send_msg(chip, &rmh); | |
156 | } | |
157 | ||
158 | ||
159 | /* | |
160 | * vx_set_format - set the format of a pipe | |
161 | * @pipe: the affected pipe | |
162 | * @runtime: pcm runtime instance to be referred | |
163 | * | |
164 | * returns 0 if successful, or a negative error code. | |
165 | */ | |
af26367f TI |
166 | static int vx_set_format(struct vx_core *chip, struct vx_pipe *pipe, |
167 | struct snd_pcm_runtime *runtime) | |
1da177e4 LT |
168 | { |
169 | unsigned int header = HEADER_FMT_BASE; | |
170 | ||
171 | if (runtime->channels == 1) | |
172 | header |= HEADER_FMT_MONO; | |
173 | if (snd_pcm_format_little_endian(runtime->format)) | |
174 | header |= HEADER_FMT_INTEL; | |
175 | if (runtime->rate < 32000 && runtime->rate > 11025) | |
176 | header |= HEADER_FMT_UPTO32; | |
177 | else if (runtime->rate <= 11025) | |
178 | header |= HEADER_FMT_UPTO11; | |
179 | ||
180 | switch (snd_pcm_format_physical_width(runtime->format)) { | |
181 | // case 8: break; | |
182 | case 16: header |= HEADER_FMT_16BITS; break; | |
183 | case 24: header |= HEADER_FMT_24BITS; break; | |
184 | default : | |
185 | snd_BUG(); | |
186 | return -EINVAL; | |
187 | }; | |
188 | ||
189 | return vx_set_stream_format(chip, pipe, header); | |
190 | } | |
191 | ||
192 | /* | |
193 | * set / query the IBL size | |
194 | */ | |
af26367f | 195 | static int vx_set_ibl(struct vx_core *chip, struct vx_ibl_info *info) |
1da177e4 LT |
196 | { |
197 | int err; | |
198 | struct vx_rmh rmh; | |
199 | ||
200 | vx_init_rmh(&rmh, CMD_IBL); | |
201 | rmh.Cmd[0] |= info->size & 0x03ffff; | |
202 | err = vx_send_msg(chip, &rmh); | |
203 | if (err < 0) | |
204 | return err; | |
205 | info->size = rmh.Stat[0]; | |
206 | info->max_size = rmh.Stat[1]; | |
207 | info->min_size = rmh.Stat[2]; | |
208 | info->granularity = rmh.Stat[3]; | |
209 | snd_printdd(KERN_DEBUG "vx_set_ibl: size = %d, max = %d, min = %d, gran = %d\n", | |
210 | info->size, info->max_size, info->min_size, info->granularity); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | ||
215 | /* | |
216 | * vx_get_pipe_state - get the state of a pipe | |
217 | * @pipe: the pipe to be checked | |
218 | * @state: the pointer for the returned state | |
219 | * | |
220 | * checks the state of a given pipe, and stores the state (1 = running, | |
221 | * 0 = paused) on the given pointer. | |
222 | * | |
223 | * called from trigger callback only | |
224 | */ | |
af26367f | 225 | static int vx_get_pipe_state(struct vx_core *chip, struct vx_pipe *pipe, int *state) |
1da177e4 LT |
226 | { |
227 | int err; | |
228 | struct vx_rmh rmh; | |
229 | ||
230 | vx_init_rmh(&rmh, CMD_PIPE_STATE); | |
231 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
232 | err = vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
233 | if (! err) | |
234 | *state = (rmh.Stat[0] & (1 << pipe->number)) ? 1 : 0; | |
235 | return err; | |
236 | } | |
237 | ||
238 | ||
239 | /* | |
240 | * vx_query_hbuffer_size - query available h-buffer size in bytes | |
241 | * @pipe: the pipe to be checked | |
242 | * | |
243 | * return the available size on h-buffer in bytes, | |
244 | * or a negative error code. | |
245 | * | |
246 | * NOTE: calling this function always switches to the stream mode. | |
247 | * you'll need to disconnect the host to get back to the | |
248 | * normal mode. | |
249 | */ | |
af26367f | 250 | static int vx_query_hbuffer_size(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
251 | { |
252 | int result; | |
253 | struct vx_rmh rmh; | |
254 | ||
255 | vx_init_rmh(&rmh, CMD_SIZE_HBUFFER); | |
256 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
257 | if (pipe->is_capture) | |
258 | rmh.Cmd[0] |= 0x00000001; | |
259 | result = vx_send_msg(chip, &rmh); | |
260 | if (! result) | |
261 | result = rmh.Stat[0] & 0xffff; | |
262 | return result; | |
263 | } | |
264 | ||
265 | ||
266 | /* | |
267 | * vx_pipe_can_start - query whether a pipe is ready for start | |
268 | * @pipe: the pipe to be checked | |
269 | * | |
270 | * return 1 if ready, 0 if not ready, and negative value on error. | |
271 | * | |
272 | * called from trigger callback only | |
273 | */ | |
af26367f | 274 | static int vx_pipe_can_start(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
275 | { |
276 | int err; | |
277 | struct vx_rmh rmh; | |
278 | ||
279 | vx_init_rmh(&rmh, CMD_CAN_START_PIPE); | |
280 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
281 | rmh.Cmd[0] |= 1; | |
282 | ||
283 | err = vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
284 | if (! err) { | |
285 | if (rmh.Stat[0]) | |
286 | err = 1; | |
287 | } | |
288 | return err; | |
289 | } | |
290 | ||
291 | /* | |
292 | * vx_conf_pipe - tell the pipe to stand by and wait for IRQA. | |
293 | * @pipe: the pipe to be configured | |
294 | */ | |
af26367f | 295 | static int vx_conf_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
296 | { |
297 | struct vx_rmh rmh; | |
298 | ||
299 | vx_init_rmh(&rmh, CMD_CONF_PIPE); | |
300 | if (pipe->is_capture) | |
301 | rmh.Cmd[0] |= COMMAND_RECORD_MASK; | |
302 | rmh.Cmd[1] = 1 << pipe->number; | |
303 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
304 | } | |
305 | ||
306 | /* | |
307 | * vx_send_irqa - trigger IRQA | |
308 | */ | |
af26367f | 309 | static int vx_send_irqa(struct vx_core *chip) |
1da177e4 LT |
310 | { |
311 | struct vx_rmh rmh; | |
312 | ||
313 | vx_init_rmh(&rmh, CMD_SEND_IRQA); | |
314 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
315 | } | |
316 | ||
317 | ||
318 | #define MAX_WAIT_FOR_DSP 250 | |
319 | /* | |
320 | * vx boards do not support inter-card sync, besides | |
321 | * only 126 samples require to be prepared before a pipe can start | |
322 | */ | |
323 | #define CAN_START_DELAY 2 /* wait 2ms only before asking if the pipe is ready*/ | |
324 | #define WAIT_STATE_DELAY 2 /* wait 2ms after irqA was requested and check if the pipe state toggled*/ | |
325 | ||
326 | /* | |
327 | * vx_toggle_pipe - start / pause a pipe | |
328 | * @pipe: the pipe to be triggered | |
329 | * @state: start = 1, pause = 0 | |
330 | * | |
331 | * called from trigger callback only | |
332 | * | |
333 | */ | |
af26367f | 334 | static int vx_toggle_pipe(struct vx_core *chip, struct vx_pipe *pipe, int state) |
1da177e4 LT |
335 | { |
336 | int err, i, cur_state; | |
337 | ||
338 | /* Check the pipe is not already in the requested state */ | |
339 | if (vx_get_pipe_state(chip, pipe, &cur_state) < 0) | |
340 | return -EBADFD; | |
341 | if (state == cur_state) | |
342 | return 0; | |
343 | ||
344 | /* If a start is requested, ask the DSP to get prepared | |
345 | * and wait for a positive acknowledge (when there are | |
346 | * enough sound buffer for this pipe) | |
347 | */ | |
348 | if (state) { | |
349 | for (i = 0 ; i < MAX_WAIT_FOR_DSP; i++) { | |
350 | err = vx_pipe_can_start(chip, pipe); | |
351 | if (err > 0) | |
352 | break; | |
353 | /* Wait for a few, before asking again | |
354 | * to avoid flooding the DSP with our requests | |
355 | */ | |
356 | mdelay(1); | |
357 | } | |
358 | } | |
359 | ||
360 | if ((err = vx_conf_pipe(chip, pipe)) < 0) | |
361 | return err; | |
362 | ||
363 | if ((err = vx_send_irqa(chip)) < 0) | |
364 | return err; | |
365 | ||
366 | /* If it completes successfully, wait for the pipes | |
367 | * reaching the expected state before returning | |
368 | * Check one pipe only (since they are synchronous) | |
369 | */ | |
370 | for (i = 0; i < MAX_WAIT_FOR_DSP; i++) { | |
371 | err = vx_get_pipe_state(chip, pipe, &cur_state); | |
372 | if (err < 0 || cur_state == state) | |
373 | break; | |
374 | err = -EIO; | |
375 | mdelay(1); | |
376 | } | |
377 | return err < 0 ? -EIO : 0; | |
378 | } | |
379 | ||
380 | ||
381 | /* | |
382 | * vx_stop_pipe - stop a pipe | |
383 | * @pipe: the pipe to be stopped | |
384 | * | |
385 | * called from trigger callback only | |
386 | */ | |
af26367f | 387 | static int vx_stop_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
388 | { |
389 | struct vx_rmh rmh; | |
390 | vx_init_rmh(&rmh, CMD_STOP_PIPE); | |
391 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
392 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
393 | } | |
394 | ||
395 | ||
396 | /* | |
397 | * vx_alloc_pipe - allocate a pipe and initialize the pipe instance | |
398 | * @capture: 0 = playback, 1 = capture operation | |
399 | * @audioid: the audio id to be assigned | |
400 | * @num_audio: number of audio channels | |
401 | * @pipep: the returned pipe instance | |
402 | * | |
403 | * return 0 on success, or a negative error code. | |
404 | */ | |
af26367f | 405 | static int vx_alloc_pipe(struct vx_core *chip, int capture, |
1da177e4 | 406 | int audioid, int num_audio, |
af26367f | 407 | struct vx_pipe **pipep) |
1da177e4 LT |
408 | { |
409 | int err; | |
af26367f | 410 | struct vx_pipe *pipe; |
1da177e4 LT |
411 | struct vx_rmh rmh; |
412 | int data_mode; | |
413 | ||
414 | *pipep = NULL; | |
415 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
416 | vx_set_pipe_cmd_params(&rmh, capture, audioid, num_audio); | |
417 | #if 0 // NYI | |
418 | if (underrun_skip_sound) | |
419 | rmh.Cmd[0] |= BIT_SKIP_SOUND; | |
420 | #endif // NYI | |
421 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
422 | if (! capture && data_mode) | |
423 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
424 | err = vx_send_msg(chip, &rmh); | |
425 | if (err < 0) | |
426 | return err; | |
427 | ||
428 | /* initialize the pipe record */ | |
561b220a | 429 | pipe = kzalloc(sizeof(*pipe), GFP_KERNEL); |
1da177e4 LT |
430 | if (! pipe) { |
431 | /* release the pipe */ | |
432 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
433 | vx_set_pipe_cmd_params(&rmh, capture, audioid, 0); | |
434 | vx_send_msg(chip, &rmh); | |
435 | return -ENOMEM; | |
436 | } | |
437 | ||
438 | /* the pipe index should be identical with the audio index */ | |
439 | pipe->number = audioid; | |
440 | pipe->is_capture = capture; | |
441 | pipe->channels = num_audio; | |
442 | pipe->differed_type = 0; | |
443 | pipe->pcx_time = 0; | |
444 | pipe->data_mode = data_mode; | |
445 | *pipep = pipe; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | ||
451 | /* | |
452 | * vx_free_pipe - release a pipe | |
453 | * @pipe: pipe to be released | |
454 | */ | |
af26367f | 455 | static int vx_free_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
456 | { |
457 | struct vx_rmh rmh; | |
458 | ||
459 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
460 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
461 | vx_send_msg(chip, &rmh); | |
462 | ||
463 | kfree(pipe); | |
464 | return 0; | |
465 | } | |
466 | ||
467 | ||
468 | /* | |
469 | * vx_start_stream - start the stream | |
470 | * | |
471 | * called from trigger callback only | |
472 | */ | |
af26367f | 473 | static int vx_start_stream(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
474 | { |
475 | struct vx_rmh rmh; | |
476 | ||
477 | vx_init_rmh(&rmh, CMD_START_ONE_STREAM); | |
478 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
479 | vx_set_differed_time(chip, &rmh, pipe); | |
480 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
481 | } | |
482 | ||
483 | ||
484 | /* | |
485 | * vx_stop_stream - stop the stream | |
486 | * | |
487 | * called from trigger callback only | |
488 | */ | |
af26367f | 489 | static int vx_stop_stream(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
490 | { |
491 | struct vx_rmh rmh; | |
492 | ||
493 | vx_init_rmh(&rmh, CMD_STOP_STREAM); | |
494 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
495 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
496 | } | |
497 | ||
498 | ||
499 | /* | |
500 | * playback hw information | |
501 | */ | |
502 | ||
af26367f | 503 | static struct snd_pcm_hardware vx_pcm_playback_hw = { |
1da177e4 | 504 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
41e4845c JK |
505 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
506 | /*SNDRV_PCM_INFO_RESUME*/), | |
af26367f TI |
507 | .formats = (/*SNDRV_PCM_FMTBIT_U8 |*/ |
508 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE), | |
1da177e4 LT |
509 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, |
510 | .rate_min = 5000, | |
511 | .rate_max = 48000, | |
512 | .channels_min = 1, | |
513 | .channels_max = 2, | |
514 | .buffer_bytes_max = (128*1024), | |
515 | .period_bytes_min = 126, | |
516 | .period_bytes_max = (128*1024), | |
517 | .periods_min = 2, | |
518 | .periods_max = VX_MAX_PERIODS, | |
519 | .fifo_size = 126, | |
520 | }; | |
521 | ||
522 | ||
523 | static void vx_pcm_delayed_start(unsigned long arg); | |
524 | ||
525 | /* | |
526 | * vx_pcm_playback_open - open callback for playback | |
527 | */ | |
af26367f | 528 | static int vx_pcm_playback_open(struct snd_pcm_substream *subs) |
1da177e4 | 529 | { |
af26367f TI |
530 | struct snd_pcm_runtime *runtime = subs->runtime; |
531 | struct vx_core *chip = snd_pcm_substream_chip(subs); | |
532 | struct vx_pipe *pipe = NULL; | |
1da177e4 LT |
533 | unsigned int audio; |
534 | int err; | |
535 | ||
536 | if (chip->chip_status & VX_STAT_IS_STALE) | |
537 | return -EBUSY; | |
538 | ||
539 | audio = subs->pcm->device * 2; | |
5e246b85 TI |
540 | if (snd_BUG_ON(audio >= chip->audio_outs)) |
541 | return -EINVAL; | |
1da177e4 LT |
542 | |
543 | /* playback pipe may have been already allocated for monitoring */ | |
544 | pipe = chip->playback_pipes[audio]; | |
545 | if (! pipe) { | |
546 | /* not allocated yet */ | |
547 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe); /* stereo playback */ | |
548 | if (err < 0) | |
549 | return err; | |
550 | chip->playback_pipes[audio] = pipe; | |
551 | } | |
552 | /* open for playback */ | |
553 | pipe->references++; | |
554 | ||
555 | pipe->substream = subs; | |
556 | tasklet_init(&pipe->start_tq, vx_pcm_delayed_start, (unsigned long)subs); | |
557 | chip->playback_pipes[audio] = pipe; | |
558 | ||
559 | runtime->hw = vx_pcm_playback_hw; | |
560 | runtime->hw.period_bytes_min = chip->ibl.size; | |
561 | runtime->private_data = pipe; | |
562 | ||
563 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
564 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
565 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
570 | /* | |
571 | * vx_pcm_playback_close - close callback for playback | |
572 | */ | |
af26367f | 573 | static int vx_pcm_playback_close(struct snd_pcm_substream *subs) |
1da177e4 | 574 | { |
af26367f TI |
575 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
576 | struct vx_pipe *pipe; | |
1da177e4 LT |
577 | |
578 | if (! subs->runtime->private_data) | |
579 | return -EINVAL; | |
580 | ||
581 | pipe = subs->runtime->private_data; | |
582 | ||
583 | if (--pipe->references == 0) { | |
584 | chip->playback_pipes[pipe->number] = NULL; | |
585 | vx_free_pipe(chip, pipe); | |
586 | } | |
587 | ||
588 | return 0; | |
589 | ||
590 | } | |
591 | ||
592 | ||
593 | /* | |
594 | * vx_notify_end_of_buffer - send "end-of-buffer" notifier at the given pipe | |
595 | * @pipe: the pipe to notify | |
596 | * | |
597 | * NB: call with a certain lock. | |
598 | */ | |
af26367f | 599 | static int vx_notify_end_of_buffer(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
600 | { |
601 | int err; | |
602 | struct vx_rmh rmh; /* use a temporary rmh here */ | |
603 | ||
604 | /* Toggle Dsp Host Interface into Message mode */ | |
605 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
606 | vx_init_rmh(&rmh, CMD_NOTIFY_END_OF_BUFFER); | |
607 | vx_set_stream_cmd_params(&rmh, 0, pipe->number); | |
608 | err = vx_send_msg_nolock(chip, &rmh); | |
609 | if (err < 0) | |
610 | return err; | |
611 | /* Toggle Dsp Host Interface back to sound transfer mode */ | |
612 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | /* | |
617 | * vx_pcm_playback_transfer_chunk - transfer a single chunk | |
618 | * @subs: substream | |
619 | * @pipe: the pipe to transfer | |
620 | * @size: chunk size in bytes | |
621 | * | |
622 | * transfer a single buffer chunk. EOB notificaton is added after that. | |
623 | * called from the interrupt handler, too. | |
624 | * | |
625 | * return 0 if ok. | |
626 | */ | |
af26367f TI |
627 | static int vx_pcm_playback_transfer_chunk(struct vx_core *chip, |
628 | struct snd_pcm_runtime *runtime, | |
629 | struct vx_pipe *pipe, int size) | |
1da177e4 LT |
630 | { |
631 | int space, err = 0; | |
632 | ||
633 | space = vx_query_hbuffer_size(chip, pipe); | |
634 | if (space < 0) { | |
635 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
636 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
637 | snd_printd("error hbuffer\n"); | |
638 | return space; | |
639 | } | |
640 | if (space < size) { | |
641 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
642 | snd_printd("no enough hbuffer space %d\n", space); | |
643 | return -EIO; /* XRUN */ | |
644 | } | |
645 | ||
646 | /* we don't need irqsave here, because this function | |
647 | * is called from either trigger callback or irq handler | |
648 | */ | |
649 | spin_lock(&chip->lock); | |
650 | vx_pseudo_dma_write(chip, runtime, pipe, size); | |
651 | err = vx_notify_end_of_buffer(chip, pipe); | |
652 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
653 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
654 | spin_unlock(&chip->lock); | |
655 | return err; | |
656 | } | |
657 | ||
658 | /* | |
659 | * update the position of the given pipe. | |
660 | * pipe->position is updated and wrapped within the buffer size. | |
661 | * pipe->transferred is updated, too, but the size is not wrapped, | |
662 | * so that the caller can check the total transferred size later | |
663 | * (to call snd_pcm_period_elapsed). | |
664 | */ | |
af26367f TI |
665 | static int vx_update_pipe_position(struct vx_core *chip, |
666 | struct snd_pcm_runtime *runtime, | |
667 | struct vx_pipe *pipe) | |
1da177e4 LT |
668 | { |
669 | struct vx_rmh rmh; | |
670 | int err, update; | |
671 | u64 count; | |
672 | ||
673 | vx_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT); | |
674 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
675 | err = vx_send_msg(chip, &rmh); | |
676 | if (err < 0) | |
677 | return err; | |
678 | ||
679 | count = ((u64)(rmh.Stat[0] & 0xfffff) << 24) | (u64)rmh.Stat[1]; | |
680 | update = (int)(count - pipe->cur_count); | |
681 | pipe->cur_count = count; | |
682 | pipe->position += update; | |
683 | if (pipe->position >= (int)runtime->buffer_size) | |
684 | pipe->position %= runtime->buffer_size; | |
685 | pipe->transferred += update; | |
686 | return 0; | |
687 | } | |
688 | ||
689 | /* | |
690 | * transfer the pending playback buffer data to DSP | |
691 | * called from interrupt handler | |
692 | */ | |
af26367f TI |
693 | static void vx_pcm_playback_transfer(struct vx_core *chip, |
694 | struct snd_pcm_substream *subs, | |
695 | struct vx_pipe *pipe, int nchunks) | |
1da177e4 LT |
696 | { |
697 | int i, err; | |
af26367f | 698 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 LT |
699 | |
700 | if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE)) | |
701 | return; | |
702 | for (i = 0; i < nchunks; i++) { | |
703 | if ((err = vx_pcm_playback_transfer_chunk(chip, runtime, pipe, | |
704 | chip->ibl.size)) < 0) | |
705 | return; | |
706 | } | |
707 | } | |
708 | ||
709 | /* | |
710 | * update the playback position and call snd_pcm_period_elapsed() if necessary | |
711 | * called from interrupt handler | |
712 | */ | |
af26367f TI |
713 | static void vx_pcm_playback_update(struct vx_core *chip, |
714 | struct snd_pcm_substream *subs, | |
715 | struct vx_pipe *pipe) | |
1da177e4 LT |
716 | { |
717 | int err; | |
af26367f | 718 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 LT |
719 | |
720 | if (pipe->running && ! (chip->chip_status & VX_STAT_IS_STALE)) { | |
721 | if ((err = vx_update_pipe_position(chip, runtime, pipe)) < 0) | |
722 | return; | |
723 | if (pipe->transferred >= (int)runtime->period_size) { | |
724 | pipe->transferred %= runtime->period_size; | |
725 | snd_pcm_period_elapsed(subs); | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
730 | /* | |
731 | * start the stream and pipe. | |
732 | * this function is called from tasklet, which is invoked by the trigger | |
733 | * START callback. | |
734 | */ | |
735 | static void vx_pcm_delayed_start(unsigned long arg) | |
736 | { | |
af26367f TI |
737 | struct snd_pcm_substream *subs = (struct snd_pcm_substream *)arg; |
738 | struct vx_core *chip = subs->pcm->private_data; | |
739 | struct vx_pipe *pipe = subs->runtime->private_data; | |
1da177e4 LT |
740 | int err; |
741 | ||
742 | /* printk( KERN_DEBUG "DDDD tasklet delayed start jiffies = %ld\n", jiffies);*/ | |
743 | ||
744 | if ((err = vx_start_stream(chip, pipe)) < 0) { | |
745 | snd_printk(KERN_ERR "vx: cannot start stream\n"); | |
746 | return; | |
747 | } | |
748 | if ((err = vx_toggle_pipe(chip, pipe, 1)) < 0) { | |
749 | snd_printk(KERN_ERR "vx: cannot start pipe\n"); | |
750 | return; | |
751 | } | |
752 | /* printk( KERN_DEBUG "dddd tasklet delayed start jiffies = %ld \n", jiffies);*/ | |
753 | } | |
754 | ||
755 | /* | |
756 | * vx_pcm_playback_trigger - trigger callback for playback | |
757 | */ | |
af26367f | 758 | static int vx_pcm_trigger(struct snd_pcm_substream *subs, int cmd) |
1da177e4 | 759 | { |
af26367f TI |
760 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
761 | struct vx_pipe *pipe = subs->runtime->private_data; | |
1da177e4 LT |
762 | int err; |
763 | ||
764 | if (chip->chip_status & VX_STAT_IS_STALE) | |
765 | return -EBUSY; | |
766 | ||
767 | switch (cmd) { | |
768 | case SNDRV_PCM_TRIGGER_START: | |
769 | case SNDRV_PCM_TRIGGER_RESUME: | |
770 | if (! pipe->is_capture) | |
771 | vx_pcm_playback_transfer(chip, subs, pipe, 2); | |
772 | /* FIXME: | |
773 | * we trigger the pipe using tasklet, so that the interrupts are | |
774 | * issued surely after the trigger is completed. | |
775 | */ | |
1f04128a | 776 | tasklet_schedule(&pipe->start_tq); |
1da177e4 LT |
777 | chip->pcm_running++; |
778 | pipe->running = 1; | |
779 | break; | |
780 | case SNDRV_PCM_TRIGGER_STOP: | |
781 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
782 | vx_toggle_pipe(chip, pipe, 0); | |
783 | vx_stop_pipe(chip, pipe); | |
784 | vx_stop_stream(chip, pipe); | |
785 | chip->pcm_running--; | |
786 | pipe->running = 0; | |
787 | break; | |
788 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
789 | if ((err = vx_toggle_pipe(chip, pipe, 0)) < 0) | |
790 | return err; | |
791 | break; | |
792 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
793 | if ((err = vx_toggle_pipe(chip, pipe, 1)) < 0) | |
794 | return err; | |
795 | break; | |
796 | default: | |
797 | return -EINVAL; | |
798 | } | |
799 | return 0; | |
800 | } | |
801 | ||
802 | /* | |
803 | * vx_pcm_playback_pointer - pointer callback for playback | |
804 | */ | |
af26367f | 805 | static snd_pcm_uframes_t vx_pcm_playback_pointer(struct snd_pcm_substream *subs) |
1da177e4 | 806 | { |
af26367f TI |
807 | struct snd_pcm_runtime *runtime = subs->runtime; |
808 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
809 | return pipe->position; |
810 | } | |
811 | ||
812 | /* | |
813 | * vx_pcm_hw_params - hw_params callback for playback and capture | |
814 | */ | |
af26367f TI |
815 | static int vx_pcm_hw_params(struct snd_pcm_substream *subs, |
816 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 817 | { |
149feef5 CL |
818 | return snd_pcm_lib_alloc_vmalloc_32_buffer |
819 | (subs, params_buffer_bytes(hw_params)); | |
1da177e4 LT |
820 | } |
821 | ||
822 | /* | |
823 | * vx_pcm_hw_free - hw_free callback for playback and capture | |
824 | */ | |
af26367f | 825 | static int vx_pcm_hw_free(struct snd_pcm_substream *subs) |
1da177e4 | 826 | { |
149feef5 | 827 | return snd_pcm_lib_free_vmalloc_buffer(subs); |
1da177e4 LT |
828 | } |
829 | ||
830 | /* | |
831 | * vx_pcm_prepare - prepare callback for playback and capture | |
832 | */ | |
af26367f | 833 | static int vx_pcm_prepare(struct snd_pcm_substream *subs) |
1da177e4 | 834 | { |
af26367f TI |
835 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
836 | struct snd_pcm_runtime *runtime = subs->runtime; | |
837 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
838 | int err, data_mode; |
839 | // int max_size, nchunks; | |
840 | ||
841 | if (chip->chip_status & VX_STAT_IS_STALE) | |
842 | return -EBUSY; | |
843 | ||
844 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
845 | if (data_mode != pipe->data_mode && ! pipe->is_capture) { | |
846 | /* IEC958 status (raw-mode) was changed */ | |
847 | /* we reopen the pipe */ | |
848 | struct vx_rmh rmh; | |
849 | snd_printdd(KERN_DEBUG "reopen the pipe with data_mode = %d\n", data_mode); | |
850 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
851 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, 0); | |
852 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
853 | return err; | |
854 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
855 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, pipe->channels); | |
856 | if (data_mode) | |
857 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
858 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
859 | return err; | |
860 | pipe->data_mode = data_mode; | |
861 | } | |
862 | ||
863 | if (chip->pcm_running && chip->freq != runtime->rate) { | |
af26367f TI |
864 | snd_printk(KERN_ERR "vx: cannot set different clock %d " |
865 | "from the current %d\n", runtime->rate, chip->freq); | |
1da177e4 LT |
866 | return -EINVAL; |
867 | } | |
868 | vx_set_clock(chip, runtime->rate); | |
869 | ||
870 | if ((err = vx_set_format(chip, pipe, runtime)) < 0) | |
871 | return err; | |
872 | ||
873 | if (vx_is_pcmcia(chip)) { | |
874 | pipe->align = 2; /* 16bit word */ | |
875 | } else { | |
876 | pipe->align = 4; /* 32bit word */ | |
877 | } | |
878 | ||
879 | pipe->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size); | |
880 | pipe->period_bytes = frames_to_bytes(runtime, runtime->period_size); | |
881 | pipe->hw_ptr = 0; | |
882 | ||
883 | /* set the timestamp */ | |
884 | vx_update_pipe_position(chip, runtime, pipe); | |
885 | /* clear again */ | |
886 | pipe->transferred = 0; | |
887 | pipe->position = 0; | |
888 | ||
889 | pipe->prepared = 1; | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | ||
895 | /* | |
896 | * operators for PCM playback | |
897 | */ | |
af26367f | 898 | static struct snd_pcm_ops vx_pcm_playback_ops = { |
1da177e4 LT |
899 | .open = vx_pcm_playback_open, |
900 | .close = vx_pcm_playback_close, | |
901 | .ioctl = snd_pcm_lib_ioctl, | |
902 | .hw_params = vx_pcm_hw_params, | |
903 | .hw_free = vx_pcm_hw_free, | |
904 | .prepare = vx_pcm_prepare, | |
905 | .trigger = vx_pcm_trigger, | |
906 | .pointer = vx_pcm_playback_pointer, | |
149feef5 | 907 | .page = snd_pcm_lib_get_vmalloc_page, |
c32d977b | 908 | .mmap = snd_pcm_lib_mmap_vmalloc, |
1da177e4 LT |
909 | }; |
910 | ||
911 | ||
912 | /* | |
913 | * playback hw information | |
914 | */ | |
915 | ||
af26367f | 916 | static struct snd_pcm_hardware vx_pcm_capture_hw = { |
1da177e4 | 917 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
41e4845c JK |
918 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
919 | /*SNDRV_PCM_INFO_RESUME*/), | |
af26367f TI |
920 | .formats = (/*SNDRV_PCM_FMTBIT_U8 |*/ |
921 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE), | |
1da177e4 LT |
922 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, |
923 | .rate_min = 5000, | |
924 | .rate_max = 48000, | |
925 | .channels_min = 1, | |
926 | .channels_max = 2, | |
927 | .buffer_bytes_max = (128*1024), | |
928 | .period_bytes_min = 126, | |
929 | .period_bytes_max = (128*1024), | |
930 | .periods_min = 2, | |
931 | .periods_max = VX_MAX_PERIODS, | |
932 | .fifo_size = 126, | |
933 | }; | |
934 | ||
935 | ||
936 | /* | |
937 | * vx_pcm_capture_open - open callback for capture | |
938 | */ | |
af26367f | 939 | static int vx_pcm_capture_open(struct snd_pcm_substream *subs) |
1da177e4 | 940 | { |
af26367f TI |
941 | struct snd_pcm_runtime *runtime = subs->runtime; |
942 | struct vx_core *chip = snd_pcm_substream_chip(subs); | |
943 | struct vx_pipe *pipe; | |
944 | struct vx_pipe *pipe_out_monitoring = NULL; | |
1da177e4 LT |
945 | unsigned int audio; |
946 | int err; | |
947 | ||
948 | if (chip->chip_status & VX_STAT_IS_STALE) | |
949 | return -EBUSY; | |
950 | ||
951 | audio = subs->pcm->device * 2; | |
5e246b85 TI |
952 | if (snd_BUG_ON(audio >= chip->audio_ins)) |
953 | return -EINVAL; | |
1da177e4 LT |
954 | err = vx_alloc_pipe(chip, 1, audio, 2, &pipe); |
955 | if (err < 0) | |
956 | return err; | |
957 | pipe->substream = subs; | |
958 | tasklet_init(&pipe->start_tq, vx_pcm_delayed_start, (unsigned long)subs); | |
959 | chip->capture_pipes[audio] = pipe; | |
960 | ||
961 | /* check if monitoring is needed */ | |
962 | if (chip->audio_monitor_active[audio]) { | |
963 | pipe_out_monitoring = chip->playback_pipes[audio]; | |
964 | if (! pipe_out_monitoring) { | |
965 | /* allocate a pipe */ | |
966 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe_out_monitoring); | |
967 | if (err < 0) | |
968 | return err; | |
969 | chip->playback_pipes[audio] = pipe_out_monitoring; | |
970 | } | |
971 | pipe_out_monitoring->references++; | |
972 | /* | |
973 | if an output pipe is available, it's audios still may need to be | |
974 | unmuted. hence we'll have to call a mixer entry point. | |
975 | */ | |
af26367f TI |
976 | vx_set_monitor_level(chip, audio, chip->audio_monitor[audio], |
977 | chip->audio_monitor_active[audio]); | |
1da177e4 | 978 | /* assuming stereo */ |
af26367f TI |
979 | vx_set_monitor_level(chip, audio+1, chip->audio_monitor[audio+1], |
980 | chip->audio_monitor_active[audio+1]); | |
1da177e4 LT |
981 | } |
982 | ||
983 | pipe->monitoring_pipe = pipe_out_monitoring; /* default value NULL */ | |
984 | ||
985 | runtime->hw = vx_pcm_capture_hw; | |
986 | runtime->hw.period_bytes_min = chip->ibl.size; | |
987 | runtime->private_data = pipe; | |
988 | ||
989 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
990 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
991 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
996 | /* | |
997 | * vx_pcm_capture_close - close callback for capture | |
998 | */ | |
af26367f | 999 | static int vx_pcm_capture_close(struct snd_pcm_substream *subs) |
1da177e4 | 1000 | { |
af26367f TI |
1001 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
1002 | struct vx_pipe *pipe; | |
1003 | struct vx_pipe *pipe_out_monitoring; | |
1da177e4 LT |
1004 | |
1005 | if (! subs->runtime->private_data) | |
1006 | return -EINVAL; | |
1007 | pipe = subs->runtime->private_data; | |
1008 | chip->capture_pipes[pipe->number] = NULL; | |
1009 | ||
1010 | pipe_out_monitoring = pipe->monitoring_pipe; | |
1011 | ||
1012 | /* | |
1013 | if an output pipe is attached to this input, | |
1014 | check if it needs to be released. | |
1015 | */ | |
1016 | if (pipe_out_monitoring) { | |
1017 | if (--pipe_out_monitoring->references == 0) { | |
1018 | vx_free_pipe(chip, pipe_out_monitoring); | |
1019 | chip->playback_pipes[pipe->number] = NULL; | |
1020 | pipe->monitoring_pipe = NULL; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | vx_free_pipe(chip, pipe); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | ||
1029 | ||
1030 | #define DMA_READ_ALIGN 6 /* hardware alignment for read */ | |
1031 | ||
1032 | /* | |
1033 | * vx_pcm_capture_update - update the capture buffer | |
1034 | */ | |
af26367f TI |
1035 | static void vx_pcm_capture_update(struct vx_core *chip, struct snd_pcm_substream *subs, |
1036 | struct vx_pipe *pipe) | |
1da177e4 LT |
1037 | { |
1038 | int size, space, count; | |
af26367f | 1039 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 LT |
1040 | |
1041 | if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE)) | |
1042 | return; | |
1043 | ||
1044 | size = runtime->buffer_size - snd_pcm_capture_avail(runtime); | |
1045 | if (! size) | |
1046 | return; | |
1047 | size = frames_to_bytes(runtime, size); | |
1048 | space = vx_query_hbuffer_size(chip, pipe); | |
1049 | if (space < 0) | |
1050 | goto _error; | |
1051 | if (size > space) | |
1052 | size = space; | |
1053 | size = (size / 3) * 3; /* align to 3 bytes */ | |
1054 | if (size < DMA_READ_ALIGN) | |
1055 | goto _error; | |
1056 | ||
1057 | /* keep the last 6 bytes, they will be read after disconnection */ | |
1058 | count = size - DMA_READ_ALIGN; | |
1059 | /* read bytes until the current pointer reaches to the aligned position | |
1060 | * for word-transfer | |
1061 | */ | |
1062 | while (count > 0) { | |
1063 | if ((pipe->hw_ptr % pipe->align) == 0) | |
1064 | break; | |
1065 | if (vx_wait_for_rx_full(chip) < 0) | |
1066 | goto _error; | |
1067 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1068 | count -= 3; | |
1069 | } | |
1070 | if (count > 0) { | |
1071 | /* ok, let's accelerate! */ | |
1072 | int align = pipe->align * 3; | |
1073 | space = (count / align) * align; | |
1074 | vx_pseudo_dma_read(chip, runtime, pipe, space); | |
1075 | count -= space; | |
1076 | } | |
1077 | /* read the rest of bytes */ | |
1078 | while (count > 0) { | |
1079 | if (vx_wait_for_rx_full(chip) < 0) | |
1080 | goto _error; | |
1081 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1082 | count -= 3; | |
1083 | } | |
1084 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
1085 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
1086 | /* read the last pending 6 bytes */ | |
1087 | count = DMA_READ_ALIGN; | |
1088 | while (count > 0) { | |
1089 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1090 | count -= 3; | |
1091 | } | |
1092 | /* update the position */ | |
1093 | pipe->transferred += size; | |
1094 | if (pipe->transferred >= pipe->period_bytes) { | |
1095 | pipe->transferred %= pipe->period_bytes; | |
1096 | snd_pcm_period_elapsed(subs); | |
1097 | } | |
1098 | return; | |
1099 | ||
1100 | _error: | |
1101 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
1102 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
1103 | return; | |
1104 | } | |
1105 | ||
1106 | /* | |
1107 | * vx_pcm_capture_pointer - pointer callback for capture | |
1108 | */ | |
af26367f | 1109 | static snd_pcm_uframes_t vx_pcm_capture_pointer(struct snd_pcm_substream *subs) |
1da177e4 | 1110 | { |
af26367f TI |
1111 | struct snd_pcm_runtime *runtime = subs->runtime; |
1112 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
1113 | return bytes_to_frames(runtime, pipe->hw_ptr); |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * operators for PCM capture | |
1118 | */ | |
af26367f | 1119 | static struct snd_pcm_ops vx_pcm_capture_ops = { |
1da177e4 LT |
1120 | .open = vx_pcm_capture_open, |
1121 | .close = vx_pcm_capture_close, | |
1122 | .ioctl = snd_pcm_lib_ioctl, | |
1123 | .hw_params = vx_pcm_hw_params, | |
1124 | .hw_free = vx_pcm_hw_free, | |
1125 | .prepare = vx_pcm_prepare, | |
1126 | .trigger = vx_pcm_trigger, | |
1127 | .pointer = vx_pcm_capture_pointer, | |
149feef5 | 1128 | .page = snd_pcm_lib_get_vmalloc_page, |
c32d977b | 1129 | .mmap = snd_pcm_lib_mmap_vmalloc, |
1da177e4 LT |
1130 | }; |
1131 | ||
1132 | ||
1133 | /* | |
1134 | * interrupt handler for pcm streams | |
1135 | */ | |
af26367f | 1136 | void vx_pcm_update_intr(struct vx_core *chip, unsigned int events) |
1da177e4 LT |
1137 | { |
1138 | unsigned int i; | |
af26367f | 1139 | struct vx_pipe *pipe; |
1da177e4 LT |
1140 | |
1141 | #define EVENT_MASK (END_OF_BUFFER_EVENTS_PENDING|ASYNC_EVENTS_PENDING) | |
1142 | ||
1143 | if (events & EVENT_MASK) { | |
1144 | vx_init_rmh(&chip->irq_rmh, CMD_ASYNC); | |
1145 | if (events & ASYNC_EVENTS_PENDING) | |
1146 | chip->irq_rmh.Cmd[0] |= 0x00000001; /* SEL_ASYNC_EVENTS */ | |
1147 | if (events & END_OF_BUFFER_EVENTS_PENDING) | |
1148 | chip->irq_rmh.Cmd[0] |= 0x00000002; /* SEL_END_OF_BUF_EVENTS */ | |
1149 | ||
1150 | if (vx_send_msg(chip, &chip->irq_rmh) < 0) { | |
1151 | snd_printdd(KERN_ERR "msg send error!!\n"); | |
1152 | return; | |
1153 | } | |
1154 | ||
1155 | i = 1; | |
1156 | while (i < chip->irq_rmh.LgStat) { | |
1157 | int p, buf, capture, eob; | |
1158 | p = chip->irq_rmh.Stat[i] & MASK_FIRST_FIELD; | |
1159 | capture = (chip->irq_rmh.Stat[i] & 0x400000) ? 1 : 0; | |
1160 | eob = (chip->irq_rmh.Stat[i] & 0x800000) ? 1 : 0; | |
1161 | i++; | |
1162 | if (events & ASYNC_EVENTS_PENDING) | |
1163 | i++; | |
1164 | buf = 1; /* force to transfer */ | |
1165 | if (events & END_OF_BUFFER_EVENTS_PENDING) { | |
1166 | if (eob) | |
1167 | buf = chip->irq_rmh.Stat[i]; | |
1168 | i++; | |
1169 | } | |
1170 | if (capture) | |
1171 | continue; | |
5e246b85 TI |
1172 | if (snd_BUG_ON(p < 0 || p >= chip->audio_outs)) |
1173 | continue; | |
1da177e4 LT |
1174 | pipe = chip->playback_pipes[p]; |
1175 | if (pipe && pipe->substream) { | |
1176 | vx_pcm_playback_update(chip, pipe->substream, pipe); | |
1177 | vx_pcm_playback_transfer(chip, pipe->substream, pipe, buf); | |
1178 | } | |
1179 | } | |
1180 | } | |
1181 | ||
1182 | /* update the capture pcm pointers as frequently as possible */ | |
1183 | for (i = 0; i < chip->audio_ins; i++) { | |
1184 | pipe = chip->capture_pipes[i]; | |
1185 | if (pipe && pipe->substream) | |
1186 | vx_pcm_capture_update(chip, pipe->substream, pipe); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | ||
1191 | /* | |
25985edc | 1192 | * vx_init_audio_io - check the available audio i/o and allocate pipe arrays |
1da177e4 | 1193 | */ |
af26367f | 1194 | static int vx_init_audio_io(struct vx_core *chip) |
1da177e4 LT |
1195 | { |
1196 | struct vx_rmh rmh; | |
1197 | int preferred; | |
1198 | ||
1199 | vx_init_rmh(&rmh, CMD_SUPPORTED); | |
1200 | if (vx_send_msg(chip, &rmh) < 0) { | |
1201 | snd_printk(KERN_ERR "vx: cannot get the supported audio data\n"); | |
1202 | return -ENXIO; | |
1203 | } | |
1204 | ||
1205 | chip->audio_outs = rmh.Stat[0] & MASK_FIRST_FIELD; | |
1206 | chip->audio_ins = (rmh.Stat[0] >> (FIELD_SIZE*2)) & MASK_FIRST_FIELD; | |
1207 | chip->audio_info = rmh.Stat[1]; | |
1208 | ||
1209 | /* allocate pipes */ | |
59feddb2 | 1210 | chip->playback_pipes = kcalloc(chip->audio_outs, sizeof(struct vx_pipe *), GFP_KERNEL); |
ac57b849 AD |
1211 | if (!chip->playback_pipes) |
1212 | return -ENOMEM; | |
59feddb2 | 1213 | chip->capture_pipes = kcalloc(chip->audio_ins, sizeof(struct vx_pipe *), GFP_KERNEL); |
ac57b849 AD |
1214 | if (!chip->capture_pipes) { |
1215 | kfree(chip->playback_pipes); | |
1da177e4 | 1216 | return -ENOMEM; |
ac57b849 | 1217 | } |
1da177e4 | 1218 | |
1da177e4 LT |
1219 | preferred = chip->ibl.size; |
1220 | chip->ibl.size = 0; | |
1221 | vx_set_ibl(chip, &chip->ibl); /* query the info */ | |
1222 | if (preferred > 0) { | |
af26367f TI |
1223 | chip->ibl.size = ((preferred + chip->ibl.granularity - 1) / |
1224 | chip->ibl.granularity) * chip->ibl.granularity; | |
1da177e4 LT |
1225 | if (chip->ibl.size > chip->ibl.max_size) |
1226 | chip->ibl.size = chip->ibl.max_size; | |
1227 | } else | |
1228 | chip->ibl.size = chip->ibl.min_size; /* set to the minimum */ | |
1229 | vx_set_ibl(chip, &chip->ibl); | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | ||
1235 | /* | |
1236 | * free callback for pcm | |
1237 | */ | |
af26367f | 1238 | static void snd_vx_pcm_free(struct snd_pcm *pcm) |
1da177e4 | 1239 | { |
af26367f | 1240 | struct vx_core *chip = pcm->private_data; |
1da177e4 | 1241 | chip->pcm[pcm->device] = NULL; |
4d572776 JJ |
1242 | kfree(chip->playback_pipes); |
1243 | chip->playback_pipes = NULL; | |
1244 | kfree(chip->capture_pipes); | |
1245 | chip->capture_pipes = NULL; | |
1da177e4 LT |
1246 | } |
1247 | ||
1248 | /* | |
1249 | * snd_vx_pcm_new - create and initialize a pcm | |
1250 | */ | |
af26367f | 1251 | int snd_vx_pcm_new(struct vx_core *chip) |
1da177e4 | 1252 | { |
af26367f | 1253 | struct snd_pcm *pcm; |
1da177e4 LT |
1254 | unsigned int i; |
1255 | int err; | |
1256 | ||
1257 | if ((err = vx_init_audio_io(chip)) < 0) | |
1258 | return err; | |
1259 | ||
1260 | for (i = 0; i < chip->hw->num_codecs; i++) { | |
1261 | unsigned int outs, ins; | |
1262 | outs = chip->audio_outs > i * 2 ? 1 : 0; | |
1263 | ins = chip->audio_ins > i * 2 ? 1 : 0; | |
1264 | if (! outs && ! ins) | |
1265 | break; | |
1266 | err = snd_pcm_new(chip->card, "VX PCM", i, | |
1267 | outs, ins, &pcm); | |
1268 | if (err < 0) | |
1269 | return err; | |
1270 | if (outs) | |
1271 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &vx_pcm_playback_ops); | |
1272 | if (ins) | |
1273 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &vx_pcm_capture_ops); | |
1274 | ||
1275 | pcm->private_data = chip; | |
1276 | pcm->private_free = snd_vx_pcm_free; | |
1277 | pcm->info_flags = 0; | |
1278 | strcpy(pcm->name, chip->card->shortname); | |
1279 | chip->pcm[i] = pcm; | |
1280 | } | |
1281 | ||
1282 | return 0; | |
1283 | } |