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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 | ||
48 | #include <sound/driver.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/vmalloc.h> | |
51 | #include <linux/delay.h> | |
52 | #include <sound/core.h> | |
53 | #include <sound/asoundef.h> | |
54 | #include <sound/pcm.h> | |
55 | #include <sound/vx_core.h> | |
56 | #include "vx_cmd.h" | |
57 | ||
58 | ||
59 | /* | |
60 | * we use a vmalloc'ed (sg-)buffer | |
61 | */ | |
62 | ||
63 | /* get the physical page pointer on the given offset */ | |
64 | static struct page *snd_pcm_get_vmalloc_page(snd_pcm_substream_t *subs, unsigned long offset) | |
65 | { | |
66 | void *pageptr = subs->runtime->dma_area + offset; | |
67 | return vmalloc_to_page(pageptr); | |
68 | } | |
69 | ||
70 | /* | |
71 | * allocate a buffer via vmalloc_32(). | |
72 | * called from hw_params | |
73 | * NOTE: this may be called not only once per pcm open! | |
74 | */ | |
75 | static int snd_pcm_alloc_vmalloc_buffer(snd_pcm_substream_t *subs, size_t size) | |
76 | { | |
77 | snd_pcm_runtime_t *runtime = subs->runtime; | |
78 | if (runtime->dma_area) { | |
79 | /* already allocated */ | |
80 | if (runtime->dma_bytes >= size) | |
81 | return 0; /* already enough large */ | |
b1d5776d | 82 | vfree(runtime->dma_area); |
1da177e4 LT |
83 | } |
84 | runtime->dma_area = vmalloc_32(size); | |
85 | if (! runtime->dma_area) | |
86 | return -ENOMEM; | |
87 | memset(runtime->dma_area, 0, size); | |
88 | runtime->dma_bytes = size; | |
89 | return 1; /* changed */ | |
90 | } | |
91 | ||
92 | /* | |
93 | * free the buffer. | |
94 | * called from hw_free callback | |
95 | * NOTE: this may be called not only once per pcm open! | |
96 | */ | |
97 | static int snd_pcm_free_vmalloc_buffer(snd_pcm_substream_t *subs) | |
98 | { | |
99 | snd_pcm_runtime_t *runtime = subs->runtime; | |
100 | if (runtime->dma_area) { | |
b1d5776d | 101 | vfree(runtime->dma_area); |
1da177e4 LT |
102 | runtime->dma_area = NULL; |
103 | } | |
104 | return 0; | |
105 | } | |
106 | ||
107 | ||
108 | /* | |
109 | * read three pending pcm bytes via inb() | |
110 | */ | |
111 | static void vx_pcm_read_per_bytes(vx_core_t *chip, snd_pcm_runtime_t *runtime, vx_pipe_t *pipe) | |
112 | { | |
113 | int offset = pipe->hw_ptr; | |
114 | unsigned char *buf = (unsigned char *)(runtime->dma_area + offset); | |
115 | *buf++ = vx_inb(chip, RXH); | |
116 | if (++offset >= pipe->buffer_bytes) { | |
117 | offset = 0; | |
118 | buf = (unsigned char *)runtime->dma_area; | |
119 | } | |
120 | *buf++ = vx_inb(chip, RXM); | |
121 | if (++offset >= pipe->buffer_bytes) { | |
122 | offset = 0; | |
123 | buf = (unsigned char *)runtime->dma_area; | |
124 | } | |
125 | *buf++ = vx_inb(chip, RXL); | |
126 | if (++offset >= pipe->buffer_bytes) { | |
127 | offset = 0; | |
128 | buf = (unsigned char *)runtime->dma_area; | |
129 | } | |
130 | pipe->hw_ptr = offset; | |
131 | } | |
132 | ||
133 | /* | |
134 | * vx_set_pcx_time - convert from the PC time to the RMH status time. | |
135 | * @pc_time: the pointer for the PC-time to set | |
136 | * @dsp_time: the pointer for RMH status time array | |
137 | */ | |
138 | static void vx_set_pcx_time(vx_core_t *chip, pcx_time_t *pc_time, unsigned int *dsp_time) | |
139 | { | |
140 | dsp_time[0] = (unsigned int)((*pc_time) >> 24) & PCX_TIME_HI_MASK; | |
141 | dsp_time[1] = (unsigned int)(*pc_time) & MASK_DSP_WORD; | |
142 | } | |
143 | ||
144 | /* | |
145 | * vx_set_differed_time - set the differed time if specified | |
146 | * @rmh: the rmh record to modify | |
147 | * @pipe: the pipe to be checked | |
148 | * | |
149 | * if the pipe is programmed with the differed time, set the DSP time | |
150 | * on the rmh and changes its command length. | |
151 | * | |
152 | * returns the increase of the command length. | |
153 | */ | |
154 | static int vx_set_differed_time(vx_core_t *chip, struct vx_rmh *rmh, vx_pipe_t *pipe) | |
155 | { | |
156 | /* Update The length added to the RMH command by the timestamp */ | |
157 | if (! (pipe->differed_type & DC_DIFFERED_DELAY)) | |
158 | return 0; | |
159 | ||
160 | /* Set the T bit */ | |
161 | rmh->Cmd[0] |= DSP_DIFFERED_COMMAND_MASK; | |
162 | ||
163 | /* Time stamp is the 1st following parameter */ | |
164 | vx_set_pcx_time(chip, &pipe->pcx_time, &rmh->Cmd[1]); | |
165 | ||
166 | /* Add the flags to a notified differed command */ | |
167 | if (pipe->differed_type & DC_NOTIFY_DELAY) | |
168 | rmh->Cmd[1] |= NOTIFY_MASK_TIME_HIGH ; | |
169 | ||
170 | /* Add the flags to a multiple differed command */ | |
171 | if (pipe->differed_type & DC_MULTIPLE_DELAY) | |
172 | rmh->Cmd[1] |= MULTIPLE_MASK_TIME_HIGH; | |
173 | ||
174 | /* Add the flags to a stream-time differed command */ | |
175 | if (pipe->differed_type & DC_STREAM_TIME_DELAY) | |
176 | rmh->Cmd[1] |= STREAM_MASK_TIME_HIGH; | |
177 | ||
178 | rmh->LgCmd += 2; | |
179 | return 2; | |
180 | } | |
181 | ||
182 | /* | |
183 | * vx_set_stream_format - send the stream format command | |
184 | * @pipe: the affected pipe | |
185 | * @data: format bitmask | |
186 | */ | |
187 | static int vx_set_stream_format(vx_core_t *chip, vx_pipe_t *pipe, unsigned int data) | |
188 | { | |
189 | struct vx_rmh rmh; | |
190 | ||
191 | vx_init_rmh(&rmh, pipe->is_capture ? | |
192 | CMD_FORMAT_STREAM_IN : CMD_FORMAT_STREAM_OUT); | |
193 | rmh.Cmd[0] |= pipe->number << FIELD_SIZE; | |
194 | ||
195 | /* Command might be longer since we may have to add a timestamp */ | |
196 | vx_set_differed_time(chip, &rmh, pipe); | |
197 | ||
198 | rmh.Cmd[rmh.LgCmd] = (data & 0xFFFFFF00) >> 8; | |
199 | rmh.Cmd[rmh.LgCmd + 1] = (data & 0xFF) << 16 /*| (datal & 0xFFFF00) >> 8*/; | |
200 | rmh.LgCmd += 2; | |
201 | ||
202 | return vx_send_msg(chip, &rmh); | |
203 | } | |
204 | ||
205 | ||
206 | /* | |
207 | * vx_set_format - set the format of a pipe | |
208 | * @pipe: the affected pipe | |
209 | * @runtime: pcm runtime instance to be referred | |
210 | * | |
211 | * returns 0 if successful, or a negative error code. | |
212 | */ | |
213 | static int vx_set_format(vx_core_t *chip, vx_pipe_t *pipe, | |
214 | snd_pcm_runtime_t *runtime) | |
215 | { | |
216 | unsigned int header = HEADER_FMT_BASE; | |
217 | ||
218 | if (runtime->channels == 1) | |
219 | header |= HEADER_FMT_MONO; | |
220 | if (snd_pcm_format_little_endian(runtime->format)) | |
221 | header |= HEADER_FMT_INTEL; | |
222 | if (runtime->rate < 32000 && runtime->rate > 11025) | |
223 | header |= HEADER_FMT_UPTO32; | |
224 | else if (runtime->rate <= 11025) | |
225 | header |= HEADER_FMT_UPTO11; | |
226 | ||
227 | switch (snd_pcm_format_physical_width(runtime->format)) { | |
228 | // case 8: break; | |
229 | case 16: header |= HEADER_FMT_16BITS; break; | |
230 | case 24: header |= HEADER_FMT_24BITS; break; | |
231 | default : | |
232 | snd_BUG(); | |
233 | return -EINVAL; | |
234 | }; | |
235 | ||
236 | return vx_set_stream_format(chip, pipe, header); | |
237 | } | |
238 | ||
239 | /* | |
240 | * set / query the IBL size | |
241 | */ | |
242 | static int vx_set_ibl(vx_core_t *chip, struct vx_ibl_info *info) | |
243 | { | |
244 | int err; | |
245 | struct vx_rmh rmh; | |
246 | ||
247 | vx_init_rmh(&rmh, CMD_IBL); | |
248 | rmh.Cmd[0] |= info->size & 0x03ffff; | |
249 | err = vx_send_msg(chip, &rmh); | |
250 | if (err < 0) | |
251 | return err; | |
252 | info->size = rmh.Stat[0]; | |
253 | info->max_size = rmh.Stat[1]; | |
254 | info->min_size = rmh.Stat[2]; | |
255 | info->granularity = rmh.Stat[3]; | |
256 | snd_printdd(KERN_DEBUG "vx_set_ibl: size = %d, max = %d, min = %d, gran = %d\n", | |
257 | info->size, info->max_size, info->min_size, info->granularity); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | ||
262 | /* | |
263 | * vx_get_pipe_state - get the state of a pipe | |
264 | * @pipe: the pipe to be checked | |
265 | * @state: the pointer for the returned state | |
266 | * | |
267 | * checks the state of a given pipe, and stores the state (1 = running, | |
268 | * 0 = paused) on the given pointer. | |
269 | * | |
270 | * called from trigger callback only | |
271 | */ | |
272 | static int vx_get_pipe_state(vx_core_t *chip, vx_pipe_t *pipe, int *state) | |
273 | { | |
274 | int err; | |
275 | struct vx_rmh rmh; | |
276 | ||
277 | vx_init_rmh(&rmh, CMD_PIPE_STATE); | |
278 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
279 | err = vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
280 | if (! err) | |
281 | *state = (rmh.Stat[0] & (1 << pipe->number)) ? 1 : 0; | |
282 | return err; | |
283 | } | |
284 | ||
285 | ||
286 | /* | |
287 | * vx_query_hbuffer_size - query available h-buffer size in bytes | |
288 | * @pipe: the pipe to be checked | |
289 | * | |
290 | * return the available size on h-buffer in bytes, | |
291 | * or a negative error code. | |
292 | * | |
293 | * NOTE: calling this function always switches to the stream mode. | |
294 | * you'll need to disconnect the host to get back to the | |
295 | * normal mode. | |
296 | */ | |
297 | static int vx_query_hbuffer_size(vx_core_t *chip, vx_pipe_t *pipe) | |
298 | { | |
299 | int result; | |
300 | struct vx_rmh rmh; | |
301 | ||
302 | vx_init_rmh(&rmh, CMD_SIZE_HBUFFER); | |
303 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
304 | if (pipe->is_capture) | |
305 | rmh.Cmd[0] |= 0x00000001; | |
306 | result = vx_send_msg(chip, &rmh); | |
307 | if (! result) | |
308 | result = rmh.Stat[0] & 0xffff; | |
309 | return result; | |
310 | } | |
311 | ||
312 | ||
313 | /* | |
314 | * vx_pipe_can_start - query whether a pipe is ready for start | |
315 | * @pipe: the pipe to be checked | |
316 | * | |
317 | * return 1 if ready, 0 if not ready, and negative value on error. | |
318 | * | |
319 | * called from trigger callback only | |
320 | */ | |
321 | static int vx_pipe_can_start(vx_core_t *chip, vx_pipe_t *pipe) | |
322 | { | |
323 | int err; | |
324 | struct vx_rmh rmh; | |
325 | ||
326 | vx_init_rmh(&rmh, CMD_CAN_START_PIPE); | |
327 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
328 | rmh.Cmd[0] |= 1; | |
329 | ||
330 | err = vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
331 | if (! err) { | |
332 | if (rmh.Stat[0]) | |
333 | err = 1; | |
334 | } | |
335 | return err; | |
336 | } | |
337 | ||
338 | /* | |
339 | * vx_conf_pipe - tell the pipe to stand by and wait for IRQA. | |
340 | * @pipe: the pipe to be configured | |
341 | */ | |
342 | static int vx_conf_pipe(vx_core_t *chip, vx_pipe_t *pipe) | |
343 | { | |
344 | struct vx_rmh rmh; | |
345 | ||
346 | vx_init_rmh(&rmh, CMD_CONF_PIPE); | |
347 | if (pipe->is_capture) | |
348 | rmh.Cmd[0] |= COMMAND_RECORD_MASK; | |
349 | rmh.Cmd[1] = 1 << pipe->number; | |
350 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
351 | } | |
352 | ||
353 | /* | |
354 | * vx_send_irqa - trigger IRQA | |
355 | */ | |
356 | static int vx_send_irqa(vx_core_t *chip) | |
357 | { | |
358 | struct vx_rmh rmh; | |
359 | ||
360 | vx_init_rmh(&rmh, CMD_SEND_IRQA); | |
361 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
362 | } | |
363 | ||
364 | ||
365 | #define MAX_WAIT_FOR_DSP 250 | |
366 | /* | |
367 | * vx boards do not support inter-card sync, besides | |
368 | * only 126 samples require to be prepared before a pipe can start | |
369 | */ | |
370 | #define CAN_START_DELAY 2 /* wait 2ms only before asking if the pipe is ready*/ | |
371 | #define WAIT_STATE_DELAY 2 /* wait 2ms after irqA was requested and check if the pipe state toggled*/ | |
372 | ||
373 | /* | |
374 | * vx_toggle_pipe - start / pause a pipe | |
375 | * @pipe: the pipe to be triggered | |
376 | * @state: start = 1, pause = 0 | |
377 | * | |
378 | * called from trigger callback only | |
379 | * | |
380 | */ | |
381 | static int vx_toggle_pipe(vx_core_t *chip, vx_pipe_t *pipe, int state) | |
382 | { | |
383 | int err, i, cur_state; | |
384 | ||
385 | /* Check the pipe is not already in the requested state */ | |
386 | if (vx_get_pipe_state(chip, pipe, &cur_state) < 0) | |
387 | return -EBADFD; | |
388 | if (state == cur_state) | |
389 | return 0; | |
390 | ||
391 | /* If a start is requested, ask the DSP to get prepared | |
392 | * and wait for a positive acknowledge (when there are | |
393 | * enough sound buffer for this pipe) | |
394 | */ | |
395 | if (state) { | |
396 | for (i = 0 ; i < MAX_WAIT_FOR_DSP; i++) { | |
397 | err = vx_pipe_can_start(chip, pipe); | |
398 | if (err > 0) | |
399 | break; | |
400 | /* Wait for a few, before asking again | |
401 | * to avoid flooding the DSP with our requests | |
402 | */ | |
403 | mdelay(1); | |
404 | } | |
405 | } | |
406 | ||
407 | if ((err = vx_conf_pipe(chip, pipe)) < 0) | |
408 | return err; | |
409 | ||
410 | if ((err = vx_send_irqa(chip)) < 0) | |
411 | return err; | |
412 | ||
413 | /* If it completes successfully, wait for the pipes | |
414 | * reaching the expected state before returning | |
415 | * Check one pipe only (since they are synchronous) | |
416 | */ | |
417 | for (i = 0; i < MAX_WAIT_FOR_DSP; i++) { | |
418 | err = vx_get_pipe_state(chip, pipe, &cur_state); | |
419 | if (err < 0 || cur_state == state) | |
420 | break; | |
421 | err = -EIO; | |
422 | mdelay(1); | |
423 | } | |
424 | return err < 0 ? -EIO : 0; | |
425 | } | |
426 | ||
427 | ||
428 | /* | |
429 | * vx_stop_pipe - stop a pipe | |
430 | * @pipe: the pipe to be stopped | |
431 | * | |
432 | * called from trigger callback only | |
433 | */ | |
434 | static int vx_stop_pipe(vx_core_t *chip, vx_pipe_t *pipe) | |
435 | { | |
436 | struct vx_rmh rmh; | |
437 | vx_init_rmh(&rmh, CMD_STOP_PIPE); | |
438 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
439 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
440 | } | |
441 | ||
442 | ||
443 | /* | |
444 | * vx_alloc_pipe - allocate a pipe and initialize the pipe instance | |
445 | * @capture: 0 = playback, 1 = capture operation | |
446 | * @audioid: the audio id to be assigned | |
447 | * @num_audio: number of audio channels | |
448 | * @pipep: the returned pipe instance | |
449 | * | |
450 | * return 0 on success, or a negative error code. | |
451 | */ | |
452 | static int vx_alloc_pipe(vx_core_t *chip, int capture, | |
453 | int audioid, int num_audio, | |
454 | vx_pipe_t **pipep) | |
455 | { | |
456 | int err; | |
457 | vx_pipe_t *pipe; | |
458 | struct vx_rmh rmh; | |
459 | int data_mode; | |
460 | ||
461 | *pipep = NULL; | |
462 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
463 | vx_set_pipe_cmd_params(&rmh, capture, audioid, num_audio); | |
464 | #if 0 // NYI | |
465 | if (underrun_skip_sound) | |
466 | rmh.Cmd[0] |= BIT_SKIP_SOUND; | |
467 | #endif // NYI | |
468 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
469 | if (! capture && data_mode) | |
470 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
471 | err = vx_send_msg(chip, &rmh); | |
472 | if (err < 0) | |
473 | return err; | |
474 | ||
475 | /* initialize the pipe record */ | |
561b220a | 476 | pipe = kzalloc(sizeof(*pipe), GFP_KERNEL); |
1da177e4 LT |
477 | if (! pipe) { |
478 | /* release the pipe */ | |
479 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
480 | vx_set_pipe_cmd_params(&rmh, capture, audioid, 0); | |
481 | vx_send_msg(chip, &rmh); | |
482 | return -ENOMEM; | |
483 | } | |
484 | ||
485 | /* the pipe index should be identical with the audio index */ | |
486 | pipe->number = audioid; | |
487 | pipe->is_capture = capture; | |
488 | pipe->channels = num_audio; | |
489 | pipe->differed_type = 0; | |
490 | pipe->pcx_time = 0; | |
491 | pipe->data_mode = data_mode; | |
492 | *pipep = pipe; | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | ||
498 | /* | |
499 | * vx_free_pipe - release a pipe | |
500 | * @pipe: pipe to be released | |
501 | */ | |
502 | static int vx_free_pipe(vx_core_t *chip, vx_pipe_t *pipe) | |
503 | { | |
504 | struct vx_rmh rmh; | |
505 | ||
506 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
507 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
508 | vx_send_msg(chip, &rmh); | |
509 | ||
510 | kfree(pipe); | |
511 | return 0; | |
512 | } | |
513 | ||
514 | ||
515 | /* | |
516 | * vx_start_stream - start the stream | |
517 | * | |
518 | * called from trigger callback only | |
519 | */ | |
520 | static int vx_start_stream(vx_core_t *chip, vx_pipe_t *pipe) | |
521 | { | |
522 | struct vx_rmh rmh; | |
523 | ||
524 | vx_init_rmh(&rmh, CMD_START_ONE_STREAM); | |
525 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
526 | vx_set_differed_time(chip, &rmh, pipe); | |
527 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
528 | } | |
529 | ||
530 | ||
531 | /* | |
532 | * vx_stop_stream - stop the stream | |
533 | * | |
534 | * called from trigger callback only | |
535 | */ | |
536 | static int vx_stop_stream(vx_core_t *chip, vx_pipe_t *pipe) | |
537 | { | |
538 | struct vx_rmh rmh; | |
539 | ||
540 | vx_init_rmh(&rmh, CMD_STOP_STREAM); | |
541 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
542 | return vx_send_msg_nolock(chip, &rmh); /* no lock needed for trigger */ | |
543 | } | |
544 | ||
545 | ||
546 | /* | |
547 | * playback hw information | |
548 | */ | |
549 | ||
550 | static snd_pcm_hardware_t vx_pcm_playback_hw = { | |
551 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
41e4845c JK |
552 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
553 | /*SNDRV_PCM_INFO_RESUME*/), | |
1da177e4 LT |
554 | .formats = /*SNDRV_PCM_FMTBIT_U8 |*/ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, |
555 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, | |
556 | .rate_min = 5000, | |
557 | .rate_max = 48000, | |
558 | .channels_min = 1, | |
559 | .channels_max = 2, | |
560 | .buffer_bytes_max = (128*1024), | |
561 | .period_bytes_min = 126, | |
562 | .period_bytes_max = (128*1024), | |
563 | .periods_min = 2, | |
564 | .periods_max = VX_MAX_PERIODS, | |
565 | .fifo_size = 126, | |
566 | }; | |
567 | ||
568 | ||
569 | static void vx_pcm_delayed_start(unsigned long arg); | |
570 | ||
571 | /* | |
572 | * vx_pcm_playback_open - open callback for playback | |
573 | */ | |
574 | static int vx_pcm_playback_open(snd_pcm_substream_t *subs) | |
575 | { | |
576 | snd_pcm_runtime_t *runtime = subs->runtime; | |
577 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
578 | vx_pipe_t *pipe = NULL; | |
579 | unsigned int audio; | |
580 | int err; | |
581 | ||
582 | if (chip->chip_status & VX_STAT_IS_STALE) | |
583 | return -EBUSY; | |
584 | ||
585 | audio = subs->pcm->device * 2; | |
586 | snd_assert(audio < chip->audio_outs, return -EINVAL); | |
587 | ||
588 | /* playback pipe may have been already allocated for monitoring */ | |
589 | pipe = chip->playback_pipes[audio]; | |
590 | if (! pipe) { | |
591 | /* not allocated yet */ | |
592 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe); /* stereo playback */ | |
593 | if (err < 0) | |
594 | return err; | |
595 | chip->playback_pipes[audio] = pipe; | |
596 | } | |
597 | /* open for playback */ | |
598 | pipe->references++; | |
599 | ||
600 | pipe->substream = subs; | |
601 | tasklet_init(&pipe->start_tq, vx_pcm_delayed_start, (unsigned long)subs); | |
602 | chip->playback_pipes[audio] = pipe; | |
603 | ||
604 | runtime->hw = vx_pcm_playback_hw; | |
605 | runtime->hw.period_bytes_min = chip->ibl.size; | |
606 | runtime->private_data = pipe; | |
607 | ||
608 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
609 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
610 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
615 | /* | |
616 | * vx_pcm_playback_close - close callback for playback | |
617 | */ | |
618 | static int vx_pcm_playback_close(snd_pcm_substream_t *subs) | |
619 | { | |
620 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
621 | vx_pipe_t *pipe; | |
622 | ||
623 | if (! subs->runtime->private_data) | |
624 | return -EINVAL; | |
625 | ||
626 | pipe = subs->runtime->private_data; | |
627 | ||
628 | if (--pipe->references == 0) { | |
629 | chip->playback_pipes[pipe->number] = NULL; | |
630 | vx_free_pipe(chip, pipe); | |
631 | } | |
632 | ||
633 | return 0; | |
634 | ||
635 | } | |
636 | ||
637 | ||
638 | /* | |
639 | * vx_notify_end_of_buffer - send "end-of-buffer" notifier at the given pipe | |
640 | * @pipe: the pipe to notify | |
641 | * | |
642 | * NB: call with a certain lock. | |
643 | */ | |
644 | static int vx_notify_end_of_buffer(vx_core_t *chip, vx_pipe_t *pipe) | |
645 | { | |
646 | int err; | |
647 | struct vx_rmh rmh; /* use a temporary rmh here */ | |
648 | ||
649 | /* Toggle Dsp Host Interface into Message mode */ | |
650 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
651 | vx_init_rmh(&rmh, CMD_NOTIFY_END_OF_BUFFER); | |
652 | vx_set_stream_cmd_params(&rmh, 0, pipe->number); | |
653 | err = vx_send_msg_nolock(chip, &rmh); | |
654 | if (err < 0) | |
655 | return err; | |
656 | /* Toggle Dsp Host Interface back to sound transfer mode */ | |
657 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | /* | |
662 | * vx_pcm_playback_transfer_chunk - transfer a single chunk | |
663 | * @subs: substream | |
664 | * @pipe: the pipe to transfer | |
665 | * @size: chunk size in bytes | |
666 | * | |
667 | * transfer a single buffer chunk. EOB notificaton is added after that. | |
668 | * called from the interrupt handler, too. | |
669 | * | |
670 | * return 0 if ok. | |
671 | */ | |
672 | static int vx_pcm_playback_transfer_chunk(vx_core_t *chip, snd_pcm_runtime_t *runtime, vx_pipe_t *pipe, int size) | |
673 | { | |
674 | int space, err = 0; | |
675 | ||
676 | space = vx_query_hbuffer_size(chip, pipe); | |
677 | if (space < 0) { | |
678 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
679 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
680 | snd_printd("error hbuffer\n"); | |
681 | return space; | |
682 | } | |
683 | if (space < size) { | |
684 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
685 | snd_printd("no enough hbuffer space %d\n", space); | |
686 | return -EIO; /* XRUN */ | |
687 | } | |
688 | ||
689 | /* we don't need irqsave here, because this function | |
690 | * is called from either trigger callback or irq handler | |
691 | */ | |
692 | spin_lock(&chip->lock); | |
693 | vx_pseudo_dma_write(chip, runtime, pipe, size); | |
694 | err = vx_notify_end_of_buffer(chip, pipe); | |
695 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
696 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
697 | spin_unlock(&chip->lock); | |
698 | return err; | |
699 | } | |
700 | ||
701 | /* | |
702 | * update the position of the given pipe. | |
703 | * pipe->position is updated and wrapped within the buffer size. | |
704 | * pipe->transferred is updated, too, but the size is not wrapped, | |
705 | * so that the caller can check the total transferred size later | |
706 | * (to call snd_pcm_period_elapsed). | |
707 | */ | |
708 | static int vx_update_pipe_position(vx_core_t *chip, snd_pcm_runtime_t *runtime, vx_pipe_t *pipe) | |
709 | { | |
710 | struct vx_rmh rmh; | |
711 | int err, update; | |
712 | u64 count; | |
713 | ||
714 | vx_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT); | |
715 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
716 | err = vx_send_msg(chip, &rmh); | |
717 | if (err < 0) | |
718 | return err; | |
719 | ||
720 | count = ((u64)(rmh.Stat[0] & 0xfffff) << 24) | (u64)rmh.Stat[1]; | |
721 | update = (int)(count - pipe->cur_count); | |
722 | pipe->cur_count = count; | |
723 | pipe->position += update; | |
724 | if (pipe->position >= (int)runtime->buffer_size) | |
725 | pipe->position %= runtime->buffer_size; | |
726 | pipe->transferred += update; | |
727 | return 0; | |
728 | } | |
729 | ||
730 | /* | |
731 | * transfer the pending playback buffer data to DSP | |
732 | * called from interrupt handler | |
733 | */ | |
734 | static void vx_pcm_playback_transfer(vx_core_t *chip, snd_pcm_substream_t *subs, vx_pipe_t *pipe, int nchunks) | |
735 | { | |
736 | int i, err; | |
737 | snd_pcm_runtime_t *runtime = subs->runtime; | |
738 | ||
739 | if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE)) | |
740 | return; | |
741 | for (i = 0; i < nchunks; i++) { | |
742 | if ((err = vx_pcm_playback_transfer_chunk(chip, runtime, pipe, | |
743 | chip->ibl.size)) < 0) | |
744 | return; | |
745 | } | |
746 | } | |
747 | ||
748 | /* | |
749 | * update the playback position and call snd_pcm_period_elapsed() if necessary | |
750 | * called from interrupt handler | |
751 | */ | |
752 | static void vx_pcm_playback_update(vx_core_t *chip, snd_pcm_substream_t *subs, vx_pipe_t *pipe) | |
753 | { | |
754 | int err; | |
755 | snd_pcm_runtime_t *runtime = subs->runtime; | |
756 | ||
757 | if (pipe->running && ! (chip->chip_status & VX_STAT_IS_STALE)) { | |
758 | if ((err = vx_update_pipe_position(chip, runtime, pipe)) < 0) | |
759 | return; | |
760 | if (pipe->transferred >= (int)runtime->period_size) { | |
761 | pipe->transferred %= runtime->period_size; | |
762 | snd_pcm_period_elapsed(subs); | |
763 | } | |
764 | } | |
765 | } | |
766 | ||
767 | /* | |
768 | * start the stream and pipe. | |
769 | * this function is called from tasklet, which is invoked by the trigger | |
770 | * START callback. | |
771 | */ | |
772 | static void vx_pcm_delayed_start(unsigned long arg) | |
773 | { | |
774 | snd_pcm_substream_t *subs = (snd_pcm_substream_t *)arg; | |
775 | vx_core_t *chip = subs->pcm->private_data; | |
776 | vx_pipe_t *pipe = subs->runtime->private_data; | |
777 | int err; | |
778 | ||
779 | /* printk( KERN_DEBUG "DDDD tasklet delayed start jiffies = %ld\n", jiffies);*/ | |
780 | ||
781 | if ((err = vx_start_stream(chip, pipe)) < 0) { | |
782 | snd_printk(KERN_ERR "vx: cannot start stream\n"); | |
783 | return; | |
784 | } | |
785 | if ((err = vx_toggle_pipe(chip, pipe, 1)) < 0) { | |
786 | snd_printk(KERN_ERR "vx: cannot start pipe\n"); | |
787 | return; | |
788 | } | |
789 | /* printk( KERN_DEBUG "dddd tasklet delayed start jiffies = %ld \n", jiffies);*/ | |
790 | } | |
791 | ||
792 | /* | |
793 | * vx_pcm_playback_trigger - trigger callback for playback | |
794 | */ | |
795 | static int vx_pcm_trigger(snd_pcm_substream_t *subs, int cmd) | |
796 | { | |
797 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
798 | vx_pipe_t *pipe = subs->runtime->private_data; | |
799 | int err; | |
800 | ||
801 | if (chip->chip_status & VX_STAT_IS_STALE) | |
802 | return -EBUSY; | |
803 | ||
804 | switch (cmd) { | |
805 | case SNDRV_PCM_TRIGGER_START: | |
806 | case SNDRV_PCM_TRIGGER_RESUME: | |
807 | if (! pipe->is_capture) | |
808 | vx_pcm_playback_transfer(chip, subs, pipe, 2); | |
809 | /* FIXME: | |
810 | * we trigger the pipe using tasklet, so that the interrupts are | |
811 | * issued surely after the trigger is completed. | |
812 | */ | |
813 | tasklet_hi_schedule(&pipe->start_tq); | |
814 | chip->pcm_running++; | |
815 | pipe->running = 1; | |
816 | break; | |
817 | case SNDRV_PCM_TRIGGER_STOP: | |
818 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
819 | vx_toggle_pipe(chip, pipe, 0); | |
820 | vx_stop_pipe(chip, pipe); | |
821 | vx_stop_stream(chip, pipe); | |
822 | chip->pcm_running--; | |
823 | pipe->running = 0; | |
824 | break; | |
825 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
826 | if ((err = vx_toggle_pipe(chip, pipe, 0)) < 0) | |
827 | return err; | |
828 | break; | |
829 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
830 | if ((err = vx_toggle_pipe(chip, pipe, 1)) < 0) | |
831 | return err; | |
832 | break; | |
833 | default: | |
834 | return -EINVAL; | |
835 | } | |
836 | return 0; | |
837 | } | |
838 | ||
839 | /* | |
840 | * vx_pcm_playback_pointer - pointer callback for playback | |
841 | */ | |
842 | static snd_pcm_uframes_t vx_pcm_playback_pointer(snd_pcm_substream_t *subs) | |
843 | { | |
844 | snd_pcm_runtime_t *runtime = subs->runtime; | |
845 | vx_pipe_t *pipe = runtime->private_data; | |
846 | return pipe->position; | |
847 | } | |
848 | ||
849 | /* | |
850 | * vx_pcm_hw_params - hw_params callback for playback and capture | |
851 | */ | |
852 | static int vx_pcm_hw_params(snd_pcm_substream_t *subs, | |
853 | snd_pcm_hw_params_t *hw_params) | |
854 | { | |
855 | return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params)); | |
856 | } | |
857 | ||
858 | /* | |
859 | * vx_pcm_hw_free - hw_free callback for playback and capture | |
860 | */ | |
861 | static int vx_pcm_hw_free(snd_pcm_substream_t *subs) | |
862 | { | |
863 | return snd_pcm_free_vmalloc_buffer(subs); | |
864 | } | |
865 | ||
866 | /* | |
867 | * vx_pcm_prepare - prepare callback for playback and capture | |
868 | */ | |
869 | static int vx_pcm_prepare(snd_pcm_substream_t *subs) | |
870 | { | |
871 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
872 | snd_pcm_runtime_t *runtime = subs->runtime; | |
873 | vx_pipe_t *pipe = runtime->private_data; | |
874 | int err, data_mode; | |
875 | // int max_size, nchunks; | |
876 | ||
877 | if (chip->chip_status & VX_STAT_IS_STALE) | |
878 | return -EBUSY; | |
879 | ||
880 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
881 | if (data_mode != pipe->data_mode && ! pipe->is_capture) { | |
882 | /* IEC958 status (raw-mode) was changed */ | |
883 | /* we reopen the pipe */ | |
884 | struct vx_rmh rmh; | |
885 | snd_printdd(KERN_DEBUG "reopen the pipe with data_mode = %d\n", data_mode); | |
886 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
887 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, 0); | |
888 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
889 | return err; | |
890 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
891 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, pipe->channels); | |
892 | if (data_mode) | |
893 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
894 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
895 | return err; | |
896 | pipe->data_mode = data_mode; | |
897 | } | |
898 | ||
899 | if (chip->pcm_running && chip->freq != runtime->rate) { | |
900 | snd_printk(KERN_ERR "vx: cannot set different clock %d from the current %d\n", runtime->rate, chip->freq); | |
901 | return -EINVAL; | |
902 | } | |
903 | vx_set_clock(chip, runtime->rate); | |
904 | ||
905 | if ((err = vx_set_format(chip, pipe, runtime)) < 0) | |
906 | return err; | |
907 | ||
908 | if (vx_is_pcmcia(chip)) { | |
909 | pipe->align = 2; /* 16bit word */ | |
910 | } else { | |
911 | pipe->align = 4; /* 32bit word */ | |
912 | } | |
913 | ||
914 | pipe->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size); | |
915 | pipe->period_bytes = frames_to_bytes(runtime, runtime->period_size); | |
916 | pipe->hw_ptr = 0; | |
917 | ||
918 | /* set the timestamp */ | |
919 | vx_update_pipe_position(chip, runtime, pipe); | |
920 | /* clear again */ | |
921 | pipe->transferred = 0; | |
922 | pipe->position = 0; | |
923 | ||
924 | pipe->prepared = 1; | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | ||
930 | /* | |
931 | * operators for PCM playback | |
932 | */ | |
933 | static snd_pcm_ops_t vx_pcm_playback_ops = { | |
934 | .open = vx_pcm_playback_open, | |
935 | .close = vx_pcm_playback_close, | |
936 | .ioctl = snd_pcm_lib_ioctl, | |
937 | .hw_params = vx_pcm_hw_params, | |
938 | .hw_free = vx_pcm_hw_free, | |
939 | .prepare = vx_pcm_prepare, | |
940 | .trigger = vx_pcm_trigger, | |
941 | .pointer = vx_pcm_playback_pointer, | |
942 | .page = snd_pcm_get_vmalloc_page, | |
943 | }; | |
944 | ||
945 | ||
946 | /* | |
947 | * playback hw information | |
948 | */ | |
949 | ||
950 | static snd_pcm_hardware_t vx_pcm_capture_hw = { | |
951 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
41e4845c JK |
952 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
953 | /*SNDRV_PCM_INFO_RESUME*/), | |
1da177e4 LT |
954 | .formats = /*SNDRV_PCM_FMTBIT_U8 |*/ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, |
955 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, | |
956 | .rate_min = 5000, | |
957 | .rate_max = 48000, | |
958 | .channels_min = 1, | |
959 | .channels_max = 2, | |
960 | .buffer_bytes_max = (128*1024), | |
961 | .period_bytes_min = 126, | |
962 | .period_bytes_max = (128*1024), | |
963 | .periods_min = 2, | |
964 | .periods_max = VX_MAX_PERIODS, | |
965 | .fifo_size = 126, | |
966 | }; | |
967 | ||
968 | ||
969 | /* | |
970 | * vx_pcm_capture_open - open callback for capture | |
971 | */ | |
972 | static int vx_pcm_capture_open(snd_pcm_substream_t *subs) | |
973 | { | |
974 | snd_pcm_runtime_t *runtime = subs->runtime; | |
975 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
976 | vx_pipe_t *pipe; | |
977 | vx_pipe_t *pipe_out_monitoring = NULL; | |
978 | unsigned int audio; | |
979 | int err; | |
980 | ||
981 | if (chip->chip_status & VX_STAT_IS_STALE) | |
982 | return -EBUSY; | |
983 | ||
984 | audio = subs->pcm->device * 2; | |
985 | snd_assert(audio < chip->audio_ins, return -EINVAL); | |
986 | err = vx_alloc_pipe(chip, 1, audio, 2, &pipe); | |
987 | if (err < 0) | |
988 | return err; | |
989 | pipe->substream = subs; | |
990 | tasklet_init(&pipe->start_tq, vx_pcm_delayed_start, (unsigned long)subs); | |
991 | chip->capture_pipes[audio] = pipe; | |
992 | ||
993 | /* check if monitoring is needed */ | |
994 | if (chip->audio_monitor_active[audio]) { | |
995 | pipe_out_monitoring = chip->playback_pipes[audio]; | |
996 | if (! pipe_out_monitoring) { | |
997 | /* allocate a pipe */ | |
998 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe_out_monitoring); | |
999 | if (err < 0) | |
1000 | return err; | |
1001 | chip->playback_pipes[audio] = pipe_out_monitoring; | |
1002 | } | |
1003 | pipe_out_monitoring->references++; | |
1004 | /* | |
1005 | if an output pipe is available, it's audios still may need to be | |
1006 | unmuted. hence we'll have to call a mixer entry point. | |
1007 | */ | |
1008 | vx_set_monitor_level(chip, audio, chip->audio_monitor[audio], chip->audio_monitor_active[audio]); | |
1009 | /* assuming stereo */ | |
1010 | vx_set_monitor_level(chip, audio+1, chip->audio_monitor[audio+1], chip->audio_monitor_active[audio+1]); | |
1011 | } | |
1012 | ||
1013 | pipe->monitoring_pipe = pipe_out_monitoring; /* default value NULL */ | |
1014 | ||
1015 | runtime->hw = vx_pcm_capture_hw; | |
1016 | runtime->hw.period_bytes_min = chip->ibl.size; | |
1017 | runtime->private_data = pipe; | |
1018 | ||
1019 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
1020 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
1021 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | /* | |
1027 | * vx_pcm_capture_close - close callback for capture | |
1028 | */ | |
1029 | static int vx_pcm_capture_close(snd_pcm_substream_t *subs) | |
1030 | { | |
1031 | vx_core_t *chip = snd_pcm_substream_chip(subs); | |
1032 | vx_pipe_t *pipe; | |
1033 | vx_pipe_t *pipe_out_monitoring; | |
1034 | ||
1035 | if (! subs->runtime->private_data) | |
1036 | return -EINVAL; | |
1037 | pipe = subs->runtime->private_data; | |
1038 | chip->capture_pipes[pipe->number] = NULL; | |
1039 | ||
1040 | pipe_out_monitoring = pipe->monitoring_pipe; | |
1041 | ||
1042 | /* | |
1043 | if an output pipe is attached to this input, | |
1044 | check if it needs to be released. | |
1045 | */ | |
1046 | if (pipe_out_monitoring) { | |
1047 | if (--pipe_out_monitoring->references == 0) { | |
1048 | vx_free_pipe(chip, pipe_out_monitoring); | |
1049 | chip->playback_pipes[pipe->number] = NULL; | |
1050 | pipe->monitoring_pipe = NULL; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | vx_free_pipe(chip, pipe); | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | ||
1059 | ||
1060 | #define DMA_READ_ALIGN 6 /* hardware alignment for read */ | |
1061 | ||
1062 | /* | |
1063 | * vx_pcm_capture_update - update the capture buffer | |
1064 | */ | |
1065 | static void vx_pcm_capture_update(vx_core_t *chip, snd_pcm_substream_t *subs, vx_pipe_t *pipe) | |
1066 | { | |
1067 | int size, space, count; | |
1068 | snd_pcm_runtime_t *runtime = subs->runtime; | |
1069 | ||
1070 | if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE)) | |
1071 | return; | |
1072 | ||
1073 | size = runtime->buffer_size - snd_pcm_capture_avail(runtime); | |
1074 | if (! size) | |
1075 | return; | |
1076 | size = frames_to_bytes(runtime, size); | |
1077 | space = vx_query_hbuffer_size(chip, pipe); | |
1078 | if (space < 0) | |
1079 | goto _error; | |
1080 | if (size > space) | |
1081 | size = space; | |
1082 | size = (size / 3) * 3; /* align to 3 bytes */ | |
1083 | if (size < DMA_READ_ALIGN) | |
1084 | goto _error; | |
1085 | ||
1086 | /* keep the last 6 bytes, they will be read after disconnection */ | |
1087 | count = size - DMA_READ_ALIGN; | |
1088 | /* read bytes until the current pointer reaches to the aligned position | |
1089 | * for word-transfer | |
1090 | */ | |
1091 | while (count > 0) { | |
1092 | if ((pipe->hw_ptr % pipe->align) == 0) | |
1093 | break; | |
1094 | if (vx_wait_for_rx_full(chip) < 0) | |
1095 | goto _error; | |
1096 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1097 | count -= 3; | |
1098 | } | |
1099 | if (count > 0) { | |
1100 | /* ok, let's accelerate! */ | |
1101 | int align = pipe->align * 3; | |
1102 | space = (count / align) * align; | |
1103 | vx_pseudo_dma_read(chip, runtime, pipe, space); | |
1104 | count -= space; | |
1105 | } | |
1106 | /* read the rest of bytes */ | |
1107 | while (count > 0) { | |
1108 | if (vx_wait_for_rx_full(chip) < 0) | |
1109 | goto _error; | |
1110 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1111 | count -= 3; | |
1112 | } | |
1113 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
1114 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
1115 | /* read the last pending 6 bytes */ | |
1116 | count = DMA_READ_ALIGN; | |
1117 | while (count > 0) { | |
1118 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1119 | count -= 3; | |
1120 | } | |
1121 | /* update the position */ | |
1122 | pipe->transferred += size; | |
1123 | if (pipe->transferred >= pipe->period_bytes) { | |
1124 | pipe->transferred %= pipe->period_bytes; | |
1125 | snd_pcm_period_elapsed(subs); | |
1126 | } | |
1127 | return; | |
1128 | ||
1129 | _error: | |
1130 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
1131 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
1132 | return; | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * vx_pcm_capture_pointer - pointer callback for capture | |
1137 | */ | |
1138 | static snd_pcm_uframes_t vx_pcm_capture_pointer(snd_pcm_substream_t *subs) | |
1139 | { | |
1140 | snd_pcm_runtime_t *runtime = subs->runtime; | |
1141 | vx_pipe_t *pipe = runtime->private_data; | |
1142 | return bytes_to_frames(runtime, pipe->hw_ptr); | |
1143 | } | |
1144 | ||
1145 | /* | |
1146 | * operators for PCM capture | |
1147 | */ | |
1148 | static snd_pcm_ops_t vx_pcm_capture_ops = { | |
1149 | .open = vx_pcm_capture_open, | |
1150 | .close = vx_pcm_capture_close, | |
1151 | .ioctl = snd_pcm_lib_ioctl, | |
1152 | .hw_params = vx_pcm_hw_params, | |
1153 | .hw_free = vx_pcm_hw_free, | |
1154 | .prepare = vx_pcm_prepare, | |
1155 | .trigger = vx_pcm_trigger, | |
1156 | .pointer = vx_pcm_capture_pointer, | |
1157 | .page = snd_pcm_get_vmalloc_page, | |
1158 | }; | |
1159 | ||
1160 | ||
1161 | /* | |
1162 | * interrupt handler for pcm streams | |
1163 | */ | |
1164 | void vx_pcm_update_intr(vx_core_t *chip, unsigned int events) | |
1165 | { | |
1166 | unsigned int i; | |
1167 | vx_pipe_t *pipe; | |
1168 | ||
1169 | #define EVENT_MASK (END_OF_BUFFER_EVENTS_PENDING|ASYNC_EVENTS_PENDING) | |
1170 | ||
1171 | if (events & EVENT_MASK) { | |
1172 | vx_init_rmh(&chip->irq_rmh, CMD_ASYNC); | |
1173 | if (events & ASYNC_EVENTS_PENDING) | |
1174 | chip->irq_rmh.Cmd[0] |= 0x00000001; /* SEL_ASYNC_EVENTS */ | |
1175 | if (events & END_OF_BUFFER_EVENTS_PENDING) | |
1176 | chip->irq_rmh.Cmd[0] |= 0x00000002; /* SEL_END_OF_BUF_EVENTS */ | |
1177 | ||
1178 | if (vx_send_msg(chip, &chip->irq_rmh) < 0) { | |
1179 | snd_printdd(KERN_ERR "msg send error!!\n"); | |
1180 | return; | |
1181 | } | |
1182 | ||
1183 | i = 1; | |
1184 | while (i < chip->irq_rmh.LgStat) { | |
1185 | int p, buf, capture, eob; | |
1186 | p = chip->irq_rmh.Stat[i] & MASK_FIRST_FIELD; | |
1187 | capture = (chip->irq_rmh.Stat[i] & 0x400000) ? 1 : 0; | |
1188 | eob = (chip->irq_rmh.Stat[i] & 0x800000) ? 1 : 0; | |
1189 | i++; | |
1190 | if (events & ASYNC_EVENTS_PENDING) | |
1191 | i++; | |
1192 | buf = 1; /* force to transfer */ | |
1193 | if (events & END_OF_BUFFER_EVENTS_PENDING) { | |
1194 | if (eob) | |
1195 | buf = chip->irq_rmh.Stat[i]; | |
1196 | i++; | |
1197 | } | |
1198 | if (capture) | |
1199 | continue; | |
1200 | snd_assert(p >= 0 && (unsigned int)p < chip->audio_outs,); | |
1201 | pipe = chip->playback_pipes[p]; | |
1202 | if (pipe && pipe->substream) { | |
1203 | vx_pcm_playback_update(chip, pipe->substream, pipe); | |
1204 | vx_pcm_playback_transfer(chip, pipe->substream, pipe, buf); | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | /* update the capture pcm pointers as frequently as possible */ | |
1210 | for (i = 0; i < chip->audio_ins; i++) { | |
1211 | pipe = chip->capture_pipes[i]; | |
1212 | if (pipe && pipe->substream) | |
1213 | vx_pcm_capture_update(chip, pipe->substream, pipe); | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | ||
1218 | /* | |
1219 | * vx_init_audio_io - check the availabe audio i/o and allocate pipe arrays | |
1220 | */ | |
1221 | static int vx_init_audio_io(vx_core_t *chip) | |
1222 | { | |
1223 | struct vx_rmh rmh; | |
1224 | int preferred; | |
1225 | ||
1226 | vx_init_rmh(&rmh, CMD_SUPPORTED); | |
1227 | if (vx_send_msg(chip, &rmh) < 0) { | |
1228 | snd_printk(KERN_ERR "vx: cannot get the supported audio data\n"); | |
1229 | return -ENXIO; | |
1230 | } | |
1231 | ||
1232 | chip->audio_outs = rmh.Stat[0] & MASK_FIRST_FIELD; | |
1233 | chip->audio_ins = (rmh.Stat[0] >> (FIELD_SIZE*2)) & MASK_FIRST_FIELD; | |
1234 | chip->audio_info = rmh.Stat[1]; | |
1235 | ||
1236 | /* allocate pipes */ | |
1237 | chip->playback_pipes = kmalloc(sizeof(vx_pipe_t *) * chip->audio_outs, GFP_KERNEL); | |
1238 | chip->capture_pipes = kmalloc(sizeof(vx_pipe_t *) * chip->audio_ins, GFP_KERNEL); | |
1239 | if (! chip->playback_pipes || ! chip->capture_pipes) | |
1240 | return -ENOMEM; | |
1241 | ||
1242 | memset(chip->playback_pipes, 0, sizeof(vx_pipe_t *) * chip->audio_outs); | |
1243 | memset(chip->capture_pipes, 0, sizeof(vx_pipe_t *) * chip->audio_ins); | |
1244 | ||
1245 | preferred = chip->ibl.size; | |
1246 | chip->ibl.size = 0; | |
1247 | vx_set_ibl(chip, &chip->ibl); /* query the info */ | |
1248 | if (preferred > 0) { | |
1249 | chip->ibl.size = ((preferred + chip->ibl.granularity - 1) / chip->ibl.granularity) * chip->ibl.granularity; | |
1250 | if (chip->ibl.size > chip->ibl.max_size) | |
1251 | chip->ibl.size = chip->ibl.max_size; | |
1252 | } else | |
1253 | chip->ibl.size = chip->ibl.min_size; /* set to the minimum */ | |
1254 | vx_set_ibl(chip, &chip->ibl); | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | ||
1260 | /* | |
1261 | * free callback for pcm | |
1262 | */ | |
1263 | static void snd_vx_pcm_free(snd_pcm_t *pcm) | |
1264 | { | |
1265 | vx_core_t *chip = pcm->private_data; | |
1266 | chip->pcm[pcm->device] = NULL; | |
4d572776 JJ |
1267 | kfree(chip->playback_pipes); |
1268 | chip->playback_pipes = NULL; | |
1269 | kfree(chip->capture_pipes); | |
1270 | chip->capture_pipes = NULL; | |
1da177e4 LT |
1271 | } |
1272 | ||
1273 | /* | |
1274 | * snd_vx_pcm_new - create and initialize a pcm | |
1275 | */ | |
1276 | int snd_vx_pcm_new(vx_core_t *chip) | |
1277 | { | |
1278 | snd_pcm_t *pcm; | |
1279 | unsigned int i; | |
1280 | int err; | |
1281 | ||
1282 | if ((err = vx_init_audio_io(chip)) < 0) | |
1283 | return err; | |
1284 | ||
1285 | for (i = 0; i < chip->hw->num_codecs; i++) { | |
1286 | unsigned int outs, ins; | |
1287 | outs = chip->audio_outs > i * 2 ? 1 : 0; | |
1288 | ins = chip->audio_ins > i * 2 ? 1 : 0; | |
1289 | if (! outs && ! ins) | |
1290 | break; | |
1291 | err = snd_pcm_new(chip->card, "VX PCM", i, | |
1292 | outs, ins, &pcm); | |
1293 | if (err < 0) | |
1294 | return err; | |
1295 | if (outs) | |
1296 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &vx_pcm_playback_ops); | |
1297 | if (ins) | |
1298 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &vx_pcm_capture_ops); | |
1299 | ||
1300 | pcm->private_data = chip; | |
1301 | pcm->private_free = snd_vx_pcm_free; | |
1302 | pcm->info_flags = 0; | |
1303 | strcpy(pcm->name, chip->card->shortname); | |
1304 | chip->pcm[i] = pcm; | |
1305 | } | |
1306 | ||
1307 | return 0; | |
1308 | } |