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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Driver for Digigram VX soundcards | |
4 | * | |
5 | * PCM part | |
6 | * | |
7 | * Copyright (c) 2002,2003 by Takashi Iwai <tiwai@suse.de> | |
8 | * | |
1da177e4 LT |
9 | * STRATEGY |
10 | * for playback, we send series of "chunks", which size is equal with the | |
11 | * IBL size, typically 126 samples. at each end of chunk, the end-of-buffer | |
12 | * interrupt is notified, and the interrupt handler will feed the next chunk. | |
13 | * | |
14 | * the current position is calculated from the sample count RMH. | |
15 | * pipe->transferred is the counter of data which has been already transferred. | |
16 | * if this counter reaches to the period size, snd_pcm_period_elapsed() will | |
17 | * be issued. | |
18 | * | |
19 | * for capture, the situation is much easier. | |
20 | * to get a low latency response, we'll check the capture streams at each | |
21 | * interrupt (capture stream has no EOB notification). if the pending | |
22 | * data is accumulated to the period size, snd_pcm_period_elapsed() is | |
23 | * called and the pointer is updated. | |
24 | * | |
25 | * the current point of read buffer is kept in pipe->hw_ptr. note that | |
26 | * this is in bytes. | |
27 | * | |
1da177e4 LT |
28 | * TODO |
29 | * - linked trigger for full-duplex mode. | |
30 | * - scheduled action on the stream. | |
31 | */ | |
32 | ||
1da177e4 | 33 | #include <linux/slab.h> |
1da177e4 LT |
34 | #include <linux/delay.h> |
35 | #include <sound/core.h> | |
36 | #include <sound/asoundef.h> | |
37 | #include <sound/pcm.h> | |
38 | #include <sound/vx_core.h> | |
39 | #include "vx_cmd.h" | |
40 | ||
41 | ||
1da177e4 LT |
42 | /* |
43 | * read three pending pcm bytes via inb() | |
44 | */ | |
af26367f TI |
45 | static void vx_pcm_read_per_bytes(struct vx_core *chip, struct snd_pcm_runtime *runtime, |
46 | struct vx_pipe *pipe) | |
1da177e4 LT |
47 | { |
48 | int offset = pipe->hw_ptr; | |
49 | unsigned char *buf = (unsigned char *)(runtime->dma_area + offset); | |
50 | *buf++ = vx_inb(chip, RXH); | |
51 | if (++offset >= pipe->buffer_bytes) { | |
52 | offset = 0; | |
53 | buf = (unsigned char *)runtime->dma_area; | |
54 | } | |
55 | *buf++ = vx_inb(chip, RXM); | |
56 | if (++offset >= pipe->buffer_bytes) { | |
57 | offset = 0; | |
58 | buf = (unsigned char *)runtime->dma_area; | |
59 | } | |
60 | *buf++ = vx_inb(chip, RXL); | |
61 | if (++offset >= pipe->buffer_bytes) { | |
62 | offset = 0; | |
63 | buf = (unsigned char *)runtime->dma_area; | |
64 | } | |
65 | pipe->hw_ptr = offset; | |
66 | } | |
67 | ||
68 | /* | |
69 | * vx_set_pcx_time - convert from the PC time to the RMH status time. | |
70 | * @pc_time: the pointer for the PC-time to set | |
71 | * @dsp_time: the pointer for RMH status time array | |
72 | */ | |
af26367f TI |
73 | static void vx_set_pcx_time(struct vx_core *chip, pcx_time_t *pc_time, |
74 | unsigned int *dsp_time) | |
1da177e4 LT |
75 | { |
76 | dsp_time[0] = (unsigned int)((*pc_time) >> 24) & PCX_TIME_HI_MASK; | |
77 | dsp_time[1] = (unsigned int)(*pc_time) & MASK_DSP_WORD; | |
78 | } | |
79 | ||
80 | /* | |
81 | * vx_set_differed_time - set the differed time if specified | |
82 | * @rmh: the rmh record to modify | |
83 | * @pipe: the pipe to be checked | |
84 | * | |
85 | * if the pipe is programmed with the differed time, set the DSP time | |
86 | * on the rmh and changes its command length. | |
87 | * | |
88 | * returns the increase of the command length. | |
89 | */ | |
af26367f TI |
90 | static int vx_set_differed_time(struct vx_core *chip, struct vx_rmh *rmh, |
91 | struct vx_pipe *pipe) | |
1da177e4 LT |
92 | { |
93 | /* Update The length added to the RMH command by the timestamp */ | |
94 | if (! (pipe->differed_type & DC_DIFFERED_DELAY)) | |
95 | return 0; | |
96 | ||
97 | /* Set the T bit */ | |
98 | rmh->Cmd[0] |= DSP_DIFFERED_COMMAND_MASK; | |
99 | ||
100 | /* Time stamp is the 1st following parameter */ | |
101 | vx_set_pcx_time(chip, &pipe->pcx_time, &rmh->Cmd[1]); | |
102 | ||
103 | /* Add the flags to a notified differed command */ | |
104 | if (pipe->differed_type & DC_NOTIFY_DELAY) | |
105 | rmh->Cmd[1] |= NOTIFY_MASK_TIME_HIGH ; | |
106 | ||
107 | /* Add the flags to a multiple differed command */ | |
108 | if (pipe->differed_type & DC_MULTIPLE_DELAY) | |
109 | rmh->Cmd[1] |= MULTIPLE_MASK_TIME_HIGH; | |
110 | ||
111 | /* Add the flags to a stream-time differed command */ | |
112 | if (pipe->differed_type & DC_STREAM_TIME_DELAY) | |
113 | rmh->Cmd[1] |= STREAM_MASK_TIME_HIGH; | |
114 | ||
115 | rmh->LgCmd += 2; | |
116 | return 2; | |
117 | } | |
118 | ||
119 | /* | |
120 | * vx_set_stream_format - send the stream format command | |
121 | * @pipe: the affected pipe | |
122 | * @data: format bitmask | |
123 | */ | |
af26367f TI |
124 | static int vx_set_stream_format(struct vx_core *chip, struct vx_pipe *pipe, |
125 | unsigned int data) | |
1da177e4 LT |
126 | { |
127 | struct vx_rmh rmh; | |
128 | ||
129 | vx_init_rmh(&rmh, pipe->is_capture ? | |
130 | CMD_FORMAT_STREAM_IN : CMD_FORMAT_STREAM_OUT); | |
131 | rmh.Cmd[0] |= pipe->number << FIELD_SIZE; | |
132 | ||
133 | /* Command might be longer since we may have to add a timestamp */ | |
134 | vx_set_differed_time(chip, &rmh, pipe); | |
135 | ||
136 | rmh.Cmd[rmh.LgCmd] = (data & 0xFFFFFF00) >> 8; | |
137 | rmh.Cmd[rmh.LgCmd + 1] = (data & 0xFF) << 16 /*| (datal & 0xFFFF00) >> 8*/; | |
138 | rmh.LgCmd += 2; | |
139 | ||
140 | return vx_send_msg(chip, &rmh); | |
141 | } | |
142 | ||
143 | ||
144 | /* | |
145 | * vx_set_format - set the format of a pipe | |
146 | * @pipe: the affected pipe | |
147 | * @runtime: pcm runtime instance to be referred | |
148 | * | |
149 | * returns 0 if successful, or a negative error code. | |
150 | */ | |
af26367f TI |
151 | static int vx_set_format(struct vx_core *chip, struct vx_pipe *pipe, |
152 | struct snd_pcm_runtime *runtime) | |
1da177e4 LT |
153 | { |
154 | unsigned int header = HEADER_FMT_BASE; | |
155 | ||
156 | if (runtime->channels == 1) | |
157 | header |= HEADER_FMT_MONO; | |
158 | if (snd_pcm_format_little_endian(runtime->format)) | |
159 | header |= HEADER_FMT_INTEL; | |
160 | if (runtime->rate < 32000 && runtime->rate > 11025) | |
161 | header |= HEADER_FMT_UPTO32; | |
162 | else if (runtime->rate <= 11025) | |
163 | header |= HEADER_FMT_UPTO11; | |
164 | ||
165 | switch (snd_pcm_format_physical_width(runtime->format)) { | |
166 | // case 8: break; | |
167 | case 16: header |= HEADER_FMT_16BITS; break; | |
168 | case 24: header |= HEADER_FMT_24BITS; break; | |
169 | default : | |
170 | snd_BUG(); | |
171 | return -EINVAL; | |
395d9dd5 | 172 | } |
1da177e4 LT |
173 | |
174 | return vx_set_stream_format(chip, pipe, header); | |
175 | } | |
176 | ||
177 | /* | |
178 | * set / query the IBL size | |
179 | */ | |
af26367f | 180 | static int vx_set_ibl(struct vx_core *chip, struct vx_ibl_info *info) |
1da177e4 LT |
181 | { |
182 | int err; | |
183 | struct vx_rmh rmh; | |
184 | ||
185 | vx_init_rmh(&rmh, CMD_IBL); | |
186 | rmh.Cmd[0] |= info->size & 0x03ffff; | |
187 | err = vx_send_msg(chip, &rmh); | |
188 | if (err < 0) | |
189 | return err; | |
190 | info->size = rmh.Stat[0]; | |
191 | info->max_size = rmh.Stat[1]; | |
192 | info->min_size = rmh.Stat[2]; | |
193 | info->granularity = rmh.Stat[3]; | |
194 | snd_printdd(KERN_DEBUG "vx_set_ibl: size = %d, max = %d, min = %d, gran = %d\n", | |
195 | info->size, info->max_size, info->min_size, info->granularity); | |
196 | return 0; | |
197 | } | |
198 | ||
199 | ||
200 | /* | |
201 | * vx_get_pipe_state - get the state of a pipe | |
202 | * @pipe: the pipe to be checked | |
203 | * @state: the pointer for the returned state | |
204 | * | |
205 | * checks the state of a given pipe, and stores the state (1 = running, | |
206 | * 0 = paused) on the given pointer. | |
207 | * | |
208 | * called from trigger callback only | |
209 | */ | |
af26367f | 210 | static int vx_get_pipe_state(struct vx_core *chip, struct vx_pipe *pipe, int *state) |
1da177e4 LT |
211 | { |
212 | int err; | |
213 | struct vx_rmh rmh; | |
214 | ||
215 | vx_init_rmh(&rmh, CMD_PIPE_STATE); | |
216 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
db0a5214 | 217 | err = vx_send_msg(chip, &rmh); |
1da177e4 LT |
218 | if (! err) |
219 | *state = (rmh.Stat[0] & (1 << pipe->number)) ? 1 : 0; | |
220 | return err; | |
221 | } | |
222 | ||
223 | ||
224 | /* | |
225 | * vx_query_hbuffer_size - query available h-buffer size in bytes | |
226 | * @pipe: the pipe to be checked | |
227 | * | |
228 | * return the available size on h-buffer in bytes, | |
229 | * or a negative error code. | |
230 | * | |
231 | * NOTE: calling this function always switches to the stream mode. | |
232 | * you'll need to disconnect the host to get back to the | |
233 | * normal mode. | |
234 | */ | |
af26367f | 235 | static int vx_query_hbuffer_size(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
236 | { |
237 | int result; | |
238 | struct vx_rmh rmh; | |
239 | ||
240 | vx_init_rmh(&rmh, CMD_SIZE_HBUFFER); | |
241 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
242 | if (pipe->is_capture) | |
243 | rmh.Cmd[0] |= 0x00000001; | |
244 | result = vx_send_msg(chip, &rmh); | |
245 | if (! result) | |
246 | result = rmh.Stat[0] & 0xffff; | |
247 | return result; | |
248 | } | |
249 | ||
250 | ||
251 | /* | |
252 | * vx_pipe_can_start - query whether a pipe is ready for start | |
253 | * @pipe: the pipe to be checked | |
254 | * | |
255 | * return 1 if ready, 0 if not ready, and negative value on error. | |
256 | * | |
257 | * called from trigger callback only | |
258 | */ | |
af26367f | 259 | static int vx_pipe_can_start(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
260 | { |
261 | int err; | |
262 | struct vx_rmh rmh; | |
263 | ||
264 | vx_init_rmh(&rmh, CMD_CAN_START_PIPE); | |
265 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
266 | rmh.Cmd[0] |= 1; | |
267 | ||
db0a5214 | 268 | err = vx_send_msg(chip, &rmh); |
1da177e4 LT |
269 | if (! err) { |
270 | if (rmh.Stat[0]) | |
271 | err = 1; | |
272 | } | |
273 | return err; | |
274 | } | |
275 | ||
276 | /* | |
277 | * vx_conf_pipe - tell the pipe to stand by and wait for IRQA. | |
278 | * @pipe: the pipe to be configured | |
279 | */ | |
af26367f | 280 | static int vx_conf_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
281 | { |
282 | struct vx_rmh rmh; | |
283 | ||
284 | vx_init_rmh(&rmh, CMD_CONF_PIPE); | |
285 | if (pipe->is_capture) | |
286 | rmh.Cmd[0] |= COMMAND_RECORD_MASK; | |
287 | rmh.Cmd[1] = 1 << pipe->number; | |
db0a5214 | 288 | return vx_send_msg(chip, &rmh); |
1da177e4 LT |
289 | } |
290 | ||
291 | /* | |
292 | * vx_send_irqa - trigger IRQA | |
293 | */ | |
af26367f | 294 | static int vx_send_irqa(struct vx_core *chip) |
1da177e4 LT |
295 | { |
296 | struct vx_rmh rmh; | |
297 | ||
298 | vx_init_rmh(&rmh, CMD_SEND_IRQA); | |
db0a5214 | 299 | return vx_send_msg(chip, &rmh); |
1da177e4 LT |
300 | } |
301 | ||
302 | ||
303 | #define MAX_WAIT_FOR_DSP 250 | |
304 | /* | |
305 | * vx boards do not support inter-card sync, besides | |
306 | * only 126 samples require to be prepared before a pipe can start | |
307 | */ | |
308 | #define CAN_START_DELAY 2 /* wait 2ms only before asking if the pipe is ready*/ | |
309 | #define WAIT_STATE_DELAY 2 /* wait 2ms after irqA was requested and check if the pipe state toggled*/ | |
310 | ||
311 | /* | |
312 | * vx_toggle_pipe - start / pause a pipe | |
313 | * @pipe: the pipe to be triggered | |
314 | * @state: start = 1, pause = 0 | |
315 | * | |
316 | * called from trigger callback only | |
317 | * | |
318 | */ | |
af26367f | 319 | static int vx_toggle_pipe(struct vx_core *chip, struct vx_pipe *pipe, int state) |
1da177e4 LT |
320 | { |
321 | int err, i, cur_state; | |
322 | ||
323 | /* Check the pipe is not already in the requested state */ | |
324 | if (vx_get_pipe_state(chip, pipe, &cur_state) < 0) | |
325 | return -EBADFD; | |
326 | if (state == cur_state) | |
327 | return 0; | |
328 | ||
329 | /* If a start is requested, ask the DSP to get prepared | |
330 | * and wait for a positive acknowledge (when there are | |
331 | * enough sound buffer for this pipe) | |
332 | */ | |
333 | if (state) { | |
334 | for (i = 0 ; i < MAX_WAIT_FOR_DSP; i++) { | |
335 | err = vx_pipe_can_start(chip, pipe); | |
336 | if (err > 0) | |
337 | break; | |
338 | /* Wait for a few, before asking again | |
339 | * to avoid flooding the DSP with our requests | |
340 | */ | |
341 | mdelay(1); | |
342 | } | |
343 | } | |
344 | ||
345 | if ((err = vx_conf_pipe(chip, pipe)) < 0) | |
346 | return err; | |
347 | ||
348 | if ((err = vx_send_irqa(chip)) < 0) | |
349 | return err; | |
350 | ||
351 | /* If it completes successfully, wait for the pipes | |
352 | * reaching the expected state before returning | |
353 | * Check one pipe only (since they are synchronous) | |
354 | */ | |
355 | for (i = 0; i < MAX_WAIT_FOR_DSP; i++) { | |
356 | err = vx_get_pipe_state(chip, pipe, &cur_state); | |
357 | if (err < 0 || cur_state == state) | |
358 | break; | |
359 | err = -EIO; | |
360 | mdelay(1); | |
361 | } | |
362 | return err < 0 ? -EIO : 0; | |
363 | } | |
364 | ||
365 | ||
366 | /* | |
367 | * vx_stop_pipe - stop a pipe | |
368 | * @pipe: the pipe to be stopped | |
369 | * | |
370 | * called from trigger callback only | |
371 | */ | |
af26367f | 372 | static int vx_stop_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
373 | { |
374 | struct vx_rmh rmh; | |
375 | vx_init_rmh(&rmh, CMD_STOP_PIPE); | |
376 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
db0a5214 | 377 | return vx_send_msg(chip, &rmh); |
1da177e4 LT |
378 | } |
379 | ||
380 | ||
381 | /* | |
382 | * vx_alloc_pipe - allocate a pipe and initialize the pipe instance | |
383 | * @capture: 0 = playback, 1 = capture operation | |
384 | * @audioid: the audio id to be assigned | |
385 | * @num_audio: number of audio channels | |
386 | * @pipep: the returned pipe instance | |
387 | * | |
388 | * return 0 on success, or a negative error code. | |
389 | */ | |
af26367f | 390 | static int vx_alloc_pipe(struct vx_core *chip, int capture, |
1da177e4 | 391 | int audioid, int num_audio, |
af26367f | 392 | struct vx_pipe **pipep) |
1da177e4 LT |
393 | { |
394 | int err; | |
af26367f | 395 | struct vx_pipe *pipe; |
1da177e4 LT |
396 | struct vx_rmh rmh; |
397 | int data_mode; | |
398 | ||
399 | *pipep = NULL; | |
400 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
401 | vx_set_pipe_cmd_params(&rmh, capture, audioid, num_audio); | |
402 | #if 0 // NYI | |
403 | if (underrun_skip_sound) | |
404 | rmh.Cmd[0] |= BIT_SKIP_SOUND; | |
405 | #endif // NYI | |
406 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
407 | if (! capture && data_mode) | |
408 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
409 | err = vx_send_msg(chip, &rmh); | |
410 | if (err < 0) | |
411 | return err; | |
412 | ||
413 | /* initialize the pipe record */ | |
561b220a | 414 | pipe = kzalloc(sizeof(*pipe), GFP_KERNEL); |
1da177e4 LT |
415 | if (! pipe) { |
416 | /* release the pipe */ | |
417 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
418 | vx_set_pipe_cmd_params(&rmh, capture, audioid, 0); | |
419 | vx_send_msg(chip, &rmh); | |
420 | return -ENOMEM; | |
421 | } | |
422 | ||
423 | /* the pipe index should be identical with the audio index */ | |
424 | pipe->number = audioid; | |
425 | pipe->is_capture = capture; | |
426 | pipe->channels = num_audio; | |
427 | pipe->differed_type = 0; | |
428 | pipe->pcx_time = 0; | |
429 | pipe->data_mode = data_mode; | |
430 | *pipep = pipe; | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | ||
436 | /* | |
437 | * vx_free_pipe - release a pipe | |
438 | * @pipe: pipe to be released | |
439 | */ | |
af26367f | 440 | static int vx_free_pipe(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
441 | { |
442 | struct vx_rmh rmh; | |
443 | ||
444 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
445 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
446 | vx_send_msg(chip, &rmh); | |
447 | ||
448 | kfree(pipe); | |
449 | return 0; | |
450 | } | |
451 | ||
452 | ||
453 | /* | |
454 | * vx_start_stream - start the stream | |
455 | * | |
456 | * called from trigger callback only | |
457 | */ | |
af26367f | 458 | static int vx_start_stream(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
459 | { |
460 | struct vx_rmh rmh; | |
461 | ||
462 | vx_init_rmh(&rmh, CMD_START_ONE_STREAM); | |
463 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
464 | vx_set_differed_time(chip, &rmh, pipe); | |
db0a5214 | 465 | return vx_send_msg(chip, &rmh); |
1da177e4 LT |
466 | } |
467 | ||
468 | ||
469 | /* | |
470 | * vx_stop_stream - stop the stream | |
471 | * | |
472 | * called from trigger callback only | |
473 | */ | |
af26367f | 474 | static int vx_stop_stream(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
475 | { |
476 | struct vx_rmh rmh; | |
477 | ||
478 | vx_init_rmh(&rmh, CMD_STOP_STREAM); | |
479 | vx_set_stream_cmd_params(&rmh, pipe->is_capture, pipe->number); | |
db0a5214 | 480 | return vx_send_msg(chip, &rmh); |
1da177e4 LT |
481 | } |
482 | ||
483 | ||
484 | /* | |
485 | * playback hw information | |
486 | */ | |
487 | ||
b6c0b715 | 488 | static const struct snd_pcm_hardware vx_pcm_playback_hw = { |
1da177e4 | 489 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
41e4845c JK |
490 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
491 | /*SNDRV_PCM_INFO_RESUME*/), | |
af26367f TI |
492 | .formats = (/*SNDRV_PCM_FMTBIT_U8 |*/ |
493 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE), | |
1da177e4 LT |
494 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, |
495 | .rate_min = 5000, | |
496 | .rate_max = 48000, | |
497 | .channels_min = 1, | |
498 | .channels_max = 2, | |
499 | .buffer_bytes_max = (128*1024), | |
500 | .period_bytes_min = 126, | |
501 | .period_bytes_max = (128*1024), | |
502 | .periods_min = 2, | |
503 | .periods_max = VX_MAX_PERIODS, | |
504 | .fifo_size = 126, | |
505 | }; | |
506 | ||
507 | ||
1da177e4 LT |
508 | /* |
509 | * vx_pcm_playback_open - open callback for playback | |
510 | */ | |
af26367f | 511 | static int vx_pcm_playback_open(struct snd_pcm_substream *subs) |
1da177e4 | 512 | { |
af26367f TI |
513 | struct snd_pcm_runtime *runtime = subs->runtime; |
514 | struct vx_core *chip = snd_pcm_substream_chip(subs); | |
515 | struct vx_pipe *pipe = NULL; | |
1da177e4 LT |
516 | unsigned int audio; |
517 | int err; | |
518 | ||
519 | if (chip->chip_status & VX_STAT_IS_STALE) | |
520 | return -EBUSY; | |
521 | ||
522 | audio = subs->pcm->device * 2; | |
5e246b85 TI |
523 | if (snd_BUG_ON(audio >= chip->audio_outs)) |
524 | return -EINVAL; | |
1da177e4 LT |
525 | |
526 | /* playback pipe may have been already allocated for monitoring */ | |
527 | pipe = chip->playback_pipes[audio]; | |
528 | if (! pipe) { | |
529 | /* not allocated yet */ | |
530 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe); /* stereo playback */ | |
531 | if (err < 0) | |
532 | return err; | |
533 | chip->playback_pipes[audio] = pipe; | |
534 | } | |
535 | /* open for playback */ | |
536 | pipe->references++; | |
537 | ||
538 | pipe->substream = subs; | |
1da177e4 LT |
539 | chip->playback_pipes[audio] = pipe; |
540 | ||
541 | runtime->hw = vx_pcm_playback_hw; | |
542 | runtime->hw.period_bytes_min = chip->ibl.size; | |
543 | runtime->private_data = pipe; | |
544 | ||
545 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
546 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
547 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
552 | /* | |
553 | * vx_pcm_playback_close - close callback for playback | |
554 | */ | |
af26367f | 555 | static int vx_pcm_playback_close(struct snd_pcm_substream *subs) |
1da177e4 | 556 | { |
af26367f TI |
557 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
558 | struct vx_pipe *pipe; | |
1da177e4 LT |
559 | |
560 | if (! subs->runtime->private_data) | |
561 | return -EINVAL; | |
562 | ||
563 | pipe = subs->runtime->private_data; | |
564 | ||
565 | if (--pipe->references == 0) { | |
566 | chip->playback_pipes[pipe->number] = NULL; | |
567 | vx_free_pipe(chip, pipe); | |
568 | } | |
569 | ||
570 | return 0; | |
571 | ||
572 | } | |
573 | ||
574 | ||
575 | /* | |
576 | * vx_notify_end_of_buffer - send "end-of-buffer" notifier at the given pipe | |
577 | * @pipe: the pipe to notify | |
578 | * | |
579 | * NB: call with a certain lock. | |
580 | */ | |
af26367f | 581 | static int vx_notify_end_of_buffer(struct vx_core *chip, struct vx_pipe *pipe) |
1da177e4 LT |
582 | { |
583 | int err; | |
584 | struct vx_rmh rmh; /* use a temporary rmh here */ | |
585 | ||
586 | /* Toggle Dsp Host Interface into Message mode */ | |
587 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
588 | vx_init_rmh(&rmh, CMD_NOTIFY_END_OF_BUFFER); | |
589 | vx_set_stream_cmd_params(&rmh, 0, pipe->number); | |
590 | err = vx_send_msg_nolock(chip, &rmh); | |
591 | if (err < 0) | |
592 | return err; | |
593 | /* Toggle Dsp Host Interface back to sound transfer mode */ | |
594 | vx_send_rih_nolock(chip, IRQ_PAUSE_START_CONNECT); | |
595 | return 0; | |
596 | } | |
597 | ||
598 | /* | |
599 | * vx_pcm_playback_transfer_chunk - transfer a single chunk | |
600 | * @subs: substream | |
601 | * @pipe: the pipe to transfer | |
602 | * @size: chunk size in bytes | |
603 | * | |
604 | * transfer a single buffer chunk. EOB notificaton is added after that. | |
605 | * called from the interrupt handler, too. | |
606 | * | |
607 | * return 0 if ok. | |
608 | */ | |
af26367f TI |
609 | static int vx_pcm_playback_transfer_chunk(struct vx_core *chip, |
610 | struct snd_pcm_runtime *runtime, | |
611 | struct vx_pipe *pipe, int size) | |
1da177e4 LT |
612 | { |
613 | int space, err = 0; | |
614 | ||
615 | space = vx_query_hbuffer_size(chip, pipe); | |
616 | if (space < 0) { | |
617 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
618 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
619 | snd_printd("error hbuffer\n"); | |
620 | return space; | |
621 | } | |
622 | if (space < size) { | |
623 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); | |
624 | snd_printd("no enough hbuffer space %d\n", space); | |
625 | return -EIO; /* XRUN */ | |
626 | } | |
627 | ||
628 | /* we don't need irqsave here, because this function | |
629 | * is called from either trigger callback or irq handler | |
630 | */ | |
db0a5214 | 631 | mutex_lock(&chip->lock); |
1da177e4 LT |
632 | vx_pseudo_dma_write(chip, runtime, pipe, size); |
633 | err = vx_notify_end_of_buffer(chip, pipe); | |
634 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
635 | vx_send_rih_nolock(chip, IRQ_CONNECT_STREAM_NEXT); | |
db0a5214 | 636 | mutex_unlock(&chip->lock); |
1da177e4 LT |
637 | return err; |
638 | } | |
639 | ||
640 | /* | |
641 | * update the position of the given pipe. | |
642 | * pipe->position is updated and wrapped within the buffer size. | |
643 | * pipe->transferred is updated, too, but the size is not wrapped, | |
644 | * so that the caller can check the total transferred size later | |
645 | * (to call snd_pcm_period_elapsed). | |
646 | */ | |
af26367f TI |
647 | static int vx_update_pipe_position(struct vx_core *chip, |
648 | struct snd_pcm_runtime *runtime, | |
649 | struct vx_pipe *pipe) | |
1da177e4 LT |
650 | { |
651 | struct vx_rmh rmh; | |
652 | int err, update; | |
653 | u64 count; | |
654 | ||
655 | vx_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT); | |
656 | vx_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->number, 0); | |
657 | err = vx_send_msg(chip, &rmh); | |
658 | if (err < 0) | |
659 | return err; | |
660 | ||
661 | count = ((u64)(rmh.Stat[0] & 0xfffff) << 24) | (u64)rmh.Stat[1]; | |
662 | update = (int)(count - pipe->cur_count); | |
663 | pipe->cur_count = count; | |
664 | pipe->position += update; | |
665 | if (pipe->position >= (int)runtime->buffer_size) | |
666 | pipe->position %= runtime->buffer_size; | |
667 | pipe->transferred += update; | |
668 | return 0; | |
669 | } | |
670 | ||
671 | /* | |
672 | * transfer the pending playback buffer data to DSP | |
673 | * called from interrupt handler | |
674 | */ | |
af26367f TI |
675 | static void vx_pcm_playback_transfer(struct vx_core *chip, |
676 | struct snd_pcm_substream *subs, | |
677 | struct vx_pipe *pipe, int nchunks) | |
1da177e4 LT |
678 | { |
679 | int i, err; | |
af26367f | 680 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 LT |
681 | |
682 | if (! pipe->prepared || (chip->chip_status & VX_STAT_IS_STALE)) | |
683 | return; | |
684 | for (i = 0; i < nchunks; i++) { | |
685 | if ((err = vx_pcm_playback_transfer_chunk(chip, runtime, pipe, | |
686 | chip->ibl.size)) < 0) | |
687 | return; | |
688 | } | |
689 | } | |
690 | ||
691 | /* | |
692 | * update the playback position and call snd_pcm_period_elapsed() if necessary | |
693 | * called from interrupt handler | |
694 | */ | |
af26367f TI |
695 | static void vx_pcm_playback_update(struct vx_core *chip, |
696 | struct snd_pcm_substream *subs, | |
697 | struct vx_pipe *pipe) | |
1da177e4 LT |
698 | { |
699 | int err; | |
af26367f | 700 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 LT |
701 | |
702 | if (pipe->running && ! (chip->chip_status & VX_STAT_IS_STALE)) { | |
703 | if ((err = vx_update_pipe_position(chip, runtime, pipe)) < 0) | |
704 | return; | |
705 | if (pipe->transferred >= (int)runtime->period_size) { | |
706 | pipe->transferred %= runtime->period_size; | |
707 | snd_pcm_period_elapsed(subs); | |
708 | } | |
709 | } | |
710 | } | |
711 | ||
1da177e4 LT |
712 | /* |
713 | * vx_pcm_playback_trigger - trigger callback for playback | |
714 | */ | |
af26367f | 715 | static int vx_pcm_trigger(struct snd_pcm_substream *subs, int cmd) |
1da177e4 | 716 | { |
af26367f TI |
717 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
718 | struct vx_pipe *pipe = subs->runtime->private_data; | |
1da177e4 LT |
719 | int err; |
720 | ||
721 | if (chip->chip_status & VX_STAT_IS_STALE) | |
722 | return -EBUSY; | |
723 | ||
724 | switch (cmd) { | |
725 | case SNDRV_PCM_TRIGGER_START: | |
726 | case SNDRV_PCM_TRIGGER_RESUME: | |
727 | if (! pipe->is_capture) | |
728 | vx_pcm_playback_transfer(chip, subs, pipe, 2); | |
db0a5214 TI |
729 | err = vx_start_stream(chip, pipe); |
730 | if (err < 0) { | |
731 | pr_debug("vx: cannot start stream\n"); | |
732 | return err; | |
733 | } | |
734 | err = vx_toggle_pipe(chip, pipe, 1); | |
735 | if (err < 0) { | |
736 | pr_debug("vx: cannot start pipe\n"); | |
737 | vx_stop_stream(chip, pipe); | |
738 | return err; | |
739 | } | |
1da177e4 LT |
740 | chip->pcm_running++; |
741 | pipe->running = 1; | |
742 | break; | |
743 | case SNDRV_PCM_TRIGGER_STOP: | |
744 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
745 | vx_toggle_pipe(chip, pipe, 0); | |
746 | vx_stop_pipe(chip, pipe); | |
747 | vx_stop_stream(chip, pipe); | |
748 | chip->pcm_running--; | |
749 | pipe->running = 0; | |
750 | break; | |
751 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
752 | if ((err = vx_toggle_pipe(chip, pipe, 0)) < 0) | |
753 | return err; | |
754 | break; | |
755 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
756 | if ((err = vx_toggle_pipe(chip, pipe, 1)) < 0) | |
757 | return err; | |
758 | break; | |
759 | default: | |
760 | return -EINVAL; | |
761 | } | |
762 | return 0; | |
763 | } | |
764 | ||
765 | /* | |
766 | * vx_pcm_playback_pointer - pointer callback for playback | |
767 | */ | |
af26367f | 768 | static snd_pcm_uframes_t vx_pcm_playback_pointer(struct snd_pcm_substream *subs) |
1da177e4 | 769 | { |
af26367f TI |
770 | struct snd_pcm_runtime *runtime = subs->runtime; |
771 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
772 | return pipe->position; |
773 | } | |
774 | ||
775 | /* | |
776 | * vx_pcm_hw_params - hw_params callback for playback and capture | |
777 | */ | |
af26367f TI |
778 | static int vx_pcm_hw_params(struct snd_pcm_substream *subs, |
779 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 780 | { |
748a76b2 | 781 | return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params)); |
1da177e4 LT |
782 | } |
783 | ||
784 | /* | |
785 | * vx_pcm_hw_free - hw_free callback for playback and capture | |
786 | */ | |
af26367f | 787 | static int vx_pcm_hw_free(struct snd_pcm_substream *subs) |
1da177e4 | 788 | { |
748a76b2 | 789 | return snd_pcm_lib_free_pages(subs); |
1da177e4 LT |
790 | } |
791 | ||
792 | /* | |
793 | * vx_pcm_prepare - prepare callback for playback and capture | |
794 | */ | |
af26367f | 795 | static int vx_pcm_prepare(struct snd_pcm_substream *subs) |
1da177e4 | 796 | { |
af26367f TI |
797 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
798 | struct snd_pcm_runtime *runtime = subs->runtime; | |
799 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
800 | int err, data_mode; |
801 | // int max_size, nchunks; | |
802 | ||
803 | if (chip->chip_status & VX_STAT_IS_STALE) | |
804 | return -EBUSY; | |
805 | ||
806 | data_mode = (chip->uer_bits & IEC958_AES0_NONAUDIO) != 0; | |
807 | if (data_mode != pipe->data_mode && ! pipe->is_capture) { | |
808 | /* IEC958 status (raw-mode) was changed */ | |
809 | /* we reopen the pipe */ | |
810 | struct vx_rmh rmh; | |
811 | snd_printdd(KERN_DEBUG "reopen the pipe with data_mode = %d\n", data_mode); | |
812 | vx_init_rmh(&rmh, CMD_FREE_PIPE); | |
813 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, 0); | |
814 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
815 | return err; | |
816 | vx_init_rmh(&rmh, CMD_RES_PIPE); | |
817 | vx_set_pipe_cmd_params(&rmh, 0, pipe->number, pipe->channels); | |
818 | if (data_mode) | |
819 | rmh.Cmd[0] |= BIT_DATA_MODE; | |
820 | if ((err = vx_send_msg(chip, &rmh)) < 0) | |
821 | return err; | |
822 | pipe->data_mode = data_mode; | |
823 | } | |
824 | ||
825 | if (chip->pcm_running && chip->freq != runtime->rate) { | |
af26367f TI |
826 | snd_printk(KERN_ERR "vx: cannot set different clock %d " |
827 | "from the current %d\n", runtime->rate, chip->freq); | |
1da177e4 LT |
828 | return -EINVAL; |
829 | } | |
830 | vx_set_clock(chip, runtime->rate); | |
831 | ||
832 | if ((err = vx_set_format(chip, pipe, runtime)) < 0) | |
833 | return err; | |
834 | ||
835 | if (vx_is_pcmcia(chip)) { | |
836 | pipe->align = 2; /* 16bit word */ | |
837 | } else { | |
838 | pipe->align = 4; /* 32bit word */ | |
839 | } | |
840 | ||
841 | pipe->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size); | |
842 | pipe->period_bytes = frames_to_bytes(runtime, runtime->period_size); | |
843 | pipe->hw_ptr = 0; | |
844 | ||
845 | /* set the timestamp */ | |
846 | vx_update_pipe_position(chip, runtime, pipe); | |
847 | /* clear again */ | |
848 | pipe->transferred = 0; | |
849 | pipe->position = 0; | |
850 | ||
851 | pipe->prepared = 1; | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | ||
857 | /* | |
858 | * operators for PCM playback | |
859 | */ | |
bf833484 | 860 | static const struct snd_pcm_ops vx_pcm_playback_ops = { |
1da177e4 LT |
861 | .open = vx_pcm_playback_open, |
862 | .close = vx_pcm_playback_close, | |
863 | .ioctl = snd_pcm_lib_ioctl, | |
864 | .hw_params = vx_pcm_hw_params, | |
865 | .hw_free = vx_pcm_hw_free, | |
866 | .prepare = vx_pcm_prepare, | |
867 | .trigger = vx_pcm_trigger, | |
868 | .pointer = vx_pcm_playback_pointer, | |
1da177e4 LT |
869 | }; |
870 | ||
871 | ||
872 | /* | |
873 | * playback hw information | |
874 | */ | |
875 | ||
b6c0b715 | 876 | static const struct snd_pcm_hardware vx_pcm_capture_hw = { |
1da177e4 | 877 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
41e4845c JK |
878 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/ |
879 | /*SNDRV_PCM_INFO_RESUME*/), | |
af26367f TI |
880 | .formats = (/*SNDRV_PCM_FMTBIT_U8 |*/ |
881 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE), | |
1da177e4 LT |
882 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, |
883 | .rate_min = 5000, | |
884 | .rate_max = 48000, | |
885 | .channels_min = 1, | |
886 | .channels_max = 2, | |
887 | .buffer_bytes_max = (128*1024), | |
888 | .period_bytes_min = 126, | |
889 | .period_bytes_max = (128*1024), | |
890 | .periods_min = 2, | |
891 | .periods_max = VX_MAX_PERIODS, | |
892 | .fifo_size = 126, | |
893 | }; | |
894 | ||
895 | ||
896 | /* | |
897 | * vx_pcm_capture_open - open callback for capture | |
898 | */ | |
af26367f | 899 | static int vx_pcm_capture_open(struct snd_pcm_substream *subs) |
1da177e4 | 900 | { |
af26367f TI |
901 | struct snd_pcm_runtime *runtime = subs->runtime; |
902 | struct vx_core *chip = snd_pcm_substream_chip(subs); | |
903 | struct vx_pipe *pipe; | |
904 | struct vx_pipe *pipe_out_monitoring = NULL; | |
1da177e4 LT |
905 | unsigned int audio; |
906 | int err; | |
907 | ||
908 | if (chip->chip_status & VX_STAT_IS_STALE) | |
909 | return -EBUSY; | |
910 | ||
911 | audio = subs->pcm->device * 2; | |
5e246b85 TI |
912 | if (snd_BUG_ON(audio >= chip->audio_ins)) |
913 | return -EINVAL; | |
1da177e4 LT |
914 | err = vx_alloc_pipe(chip, 1, audio, 2, &pipe); |
915 | if (err < 0) | |
916 | return err; | |
917 | pipe->substream = subs; | |
1da177e4 LT |
918 | chip->capture_pipes[audio] = pipe; |
919 | ||
920 | /* check if monitoring is needed */ | |
921 | if (chip->audio_monitor_active[audio]) { | |
922 | pipe_out_monitoring = chip->playback_pipes[audio]; | |
923 | if (! pipe_out_monitoring) { | |
924 | /* allocate a pipe */ | |
925 | err = vx_alloc_pipe(chip, 0, audio, 2, &pipe_out_monitoring); | |
926 | if (err < 0) | |
927 | return err; | |
928 | chip->playback_pipes[audio] = pipe_out_monitoring; | |
929 | } | |
930 | pipe_out_monitoring->references++; | |
931 | /* | |
932 | if an output pipe is available, it's audios still may need to be | |
933 | unmuted. hence we'll have to call a mixer entry point. | |
934 | */ | |
af26367f TI |
935 | vx_set_monitor_level(chip, audio, chip->audio_monitor[audio], |
936 | chip->audio_monitor_active[audio]); | |
1da177e4 | 937 | /* assuming stereo */ |
af26367f TI |
938 | vx_set_monitor_level(chip, audio+1, chip->audio_monitor[audio+1], |
939 | chip->audio_monitor_active[audio+1]); | |
1da177e4 LT |
940 | } |
941 | ||
942 | pipe->monitoring_pipe = pipe_out_monitoring; /* default value NULL */ | |
943 | ||
944 | runtime->hw = vx_pcm_capture_hw; | |
945 | runtime->hw.period_bytes_min = chip->ibl.size; | |
946 | runtime->private_data = pipe; | |
947 | ||
948 | /* align to 4 bytes (otherwise will be problematic when 24bit is used) */ | |
949 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4); | |
950 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); | |
951 | ||
952 | return 0; | |
953 | } | |
954 | ||
955 | /* | |
956 | * vx_pcm_capture_close - close callback for capture | |
957 | */ | |
af26367f | 958 | static int vx_pcm_capture_close(struct snd_pcm_substream *subs) |
1da177e4 | 959 | { |
af26367f TI |
960 | struct vx_core *chip = snd_pcm_substream_chip(subs); |
961 | struct vx_pipe *pipe; | |
962 | struct vx_pipe *pipe_out_monitoring; | |
1da177e4 LT |
963 | |
964 | if (! subs->runtime->private_data) | |
965 | return -EINVAL; | |
966 | pipe = subs->runtime->private_data; | |
967 | chip->capture_pipes[pipe->number] = NULL; | |
968 | ||
969 | pipe_out_monitoring = pipe->monitoring_pipe; | |
970 | ||
971 | /* | |
972 | if an output pipe is attached to this input, | |
973 | check if it needs to be released. | |
974 | */ | |
975 | if (pipe_out_monitoring) { | |
976 | if (--pipe_out_monitoring->references == 0) { | |
977 | vx_free_pipe(chip, pipe_out_monitoring); | |
978 | chip->playback_pipes[pipe->number] = NULL; | |
979 | pipe->monitoring_pipe = NULL; | |
980 | } | |
981 | } | |
982 | ||
983 | vx_free_pipe(chip, pipe); | |
984 | return 0; | |
985 | } | |
986 | ||
987 | ||
988 | ||
989 | #define DMA_READ_ALIGN 6 /* hardware alignment for read */ | |
990 | ||
991 | /* | |
992 | * vx_pcm_capture_update - update the capture buffer | |
993 | */ | |
af26367f TI |
994 | static void vx_pcm_capture_update(struct vx_core *chip, struct snd_pcm_substream *subs, |
995 | struct vx_pipe *pipe) | |
1da177e4 LT |
996 | { |
997 | int size, space, count; | |
af26367f | 998 | struct snd_pcm_runtime *runtime = subs->runtime; |
1da177e4 | 999 | |
ed3c177d | 1000 | if (!pipe->running || (chip->chip_status & VX_STAT_IS_STALE)) |
1da177e4 LT |
1001 | return; |
1002 | ||
1003 | size = runtime->buffer_size - snd_pcm_capture_avail(runtime); | |
1004 | if (! size) | |
1005 | return; | |
1006 | size = frames_to_bytes(runtime, size); | |
1007 | space = vx_query_hbuffer_size(chip, pipe); | |
1008 | if (space < 0) | |
1009 | goto _error; | |
1010 | if (size > space) | |
1011 | size = space; | |
1012 | size = (size / 3) * 3; /* align to 3 bytes */ | |
1013 | if (size < DMA_READ_ALIGN) | |
1014 | goto _error; | |
1015 | ||
1016 | /* keep the last 6 bytes, they will be read after disconnection */ | |
1017 | count = size - DMA_READ_ALIGN; | |
1018 | /* read bytes until the current pointer reaches to the aligned position | |
1019 | * for word-transfer | |
1020 | */ | |
1021 | while (count > 0) { | |
1022 | if ((pipe->hw_ptr % pipe->align) == 0) | |
1023 | break; | |
1024 | if (vx_wait_for_rx_full(chip) < 0) | |
1025 | goto _error; | |
1026 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1027 | count -= 3; | |
1028 | } | |
1029 | if (count > 0) { | |
1030 | /* ok, let's accelerate! */ | |
1031 | int align = pipe->align * 3; | |
1032 | space = (count / align) * align; | |
874e1f6f TI |
1033 | if (space > 0) { |
1034 | vx_pseudo_dma_read(chip, runtime, pipe, space); | |
1035 | count -= space; | |
1036 | } | |
1da177e4 LT |
1037 | } |
1038 | /* read the rest of bytes */ | |
1039 | while (count > 0) { | |
1040 | if (vx_wait_for_rx_full(chip) < 0) | |
1041 | goto _error; | |
1042 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1043 | count -= 3; | |
1044 | } | |
1045 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
db0a5214 | 1046 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); |
1da177e4 LT |
1047 | /* read the last pending 6 bytes */ |
1048 | count = DMA_READ_ALIGN; | |
1049 | while (count > 0) { | |
1050 | vx_pcm_read_per_bytes(chip, runtime, pipe); | |
1051 | count -= 3; | |
1052 | } | |
1053 | /* update the position */ | |
1054 | pipe->transferred += size; | |
1055 | if (pipe->transferred >= pipe->period_bytes) { | |
1056 | pipe->transferred %= pipe->period_bytes; | |
1057 | snd_pcm_period_elapsed(subs); | |
1058 | } | |
1059 | return; | |
1060 | ||
1061 | _error: | |
1062 | /* disconnect the host, SIZE_HBUF command always switches to the stream mode */ | |
db0a5214 | 1063 | vx_send_rih(chip, IRQ_CONNECT_STREAM_NEXT); |
1da177e4 LT |
1064 | return; |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * vx_pcm_capture_pointer - pointer callback for capture | |
1069 | */ | |
af26367f | 1070 | static snd_pcm_uframes_t vx_pcm_capture_pointer(struct snd_pcm_substream *subs) |
1da177e4 | 1071 | { |
af26367f TI |
1072 | struct snd_pcm_runtime *runtime = subs->runtime; |
1073 | struct vx_pipe *pipe = runtime->private_data; | |
1da177e4 LT |
1074 | return bytes_to_frames(runtime, pipe->hw_ptr); |
1075 | } | |
1076 | ||
1077 | /* | |
1078 | * operators for PCM capture | |
1079 | */ | |
bf833484 | 1080 | static const struct snd_pcm_ops vx_pcm_capture_ops = { |
1da177e4 LT |
1081 | .open = vx_pcm_capture_open, |
1082 | .close = vx_pcm_capture_close, | |
1083 | .ioctl = snd_pcm_lib_ioctl, | |
1084 | .hw_params = vx_pcm_hw_params, | |
1085 | .hw_free = vx_pcm_hw_free, | |
1086 | .prepare = vx_pcm_prepare, | |
1087 | .trigger = vx_pcm_trigger, | |
1088 | .pointer = vx_pcm_capture_pointer, | |
1da177e4 LT |
1089 | }; |
1090 | ||
1091 | ||
1092 | /* | |
1093 | * interrupt handler for pcm streams | |
1094 | */ | |
af26367f | 1095 | void vx_pcm_update_intr(struct vx_core *chip, unsigned int events) |
1da177e4 LT |
1096 | { |
1097 | unsigned int i; | |
af26367f | 1098 | struct vx_pipe *pipe; |
1da177e4 LT |
1099 | |
1100 | #define EVENT_MASK (END_OF_BUFFER_EVENTS_PENDING|ASYNC_EVENTS_PENDING) | |
1101 | ||
1102 | if (events & EVENT_MASK) { | |
1103 | vx_init_rmh(&chip->irq_rmh, CMD_ASYNC); | |
1104 | if (events & ASYNC_EVENTS_PENDING) | |
1105 | chip->irq_rmh.Cmd[0] |= 0x00000001; /* SEL_ASYNC_EVENTS */ | |
1106 | if (events & END_OF_BUFFER_EVENTS_PENDING) | |
1107 | chip->irq_rmh.Cmd[0] |= 0x00000002; /* SEL_END_OF_BUF_EVENTS */ | |
1108 | ||
1109 | if (vx_send_msg(chip, &chip->irq_rmh) < 0) { | |
1110 | snd_printdd(KERN_ERR "msg send error!!\n"); | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | i = 1; | |
1115 | while (i < chip->irq_rmh.LgStat) { | |
1116 | int p, buf, capture, eob; | |
1117 | p = chip->irq_rmh.Stat[i] & MASK_FIRST_FIELD; | |
1118 | capture = (chip->irq_rmh.Stat[i] & 0x400000) ? 1 : 0; | |
1119 | eob = (chip->irq_rmh.Stat[i] & 0x800000) ? 1 : 0; | |
1120 | i++; | |
1121 | if (events & ASYNC_EVENTS_PENDING) | |
1122 | i++; | |
1123 | buf = 1; /* force to transfer */ | |
1124 | if (events & END_OF_BUFFER_EVENTS_PENDING) { | |
1125 | if (eob) | |
1126 | buf = chip->irq_rmh.Stat[i]; | |
1127 | i++; | |
1128 | } | |
1129 | if (capture) | |
1130 | continue; | |
5e246b85 TI |
1131 | if (snd_BUG_ON(p < 0 || p >= chip->audio_outs)) |
1132 | continue; | |
1da177e4 LT |
1133 | pipe = chip->playback_pipes[p]; |
1134 | if (pipe && pipe->substream) { | |
1135 | vx_pcm_playback_update(chip, pipe->substream, pipe); | |
1136 | vx_pcm_playback_transfer(chip, pipe->substream, pipe, buf); | |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | /* update the capture pcm pointers as frequently as possible */ | |
1142 | for (i = 0; i < chip->audio_ins; i++) { | |
1143 | pipe = chip->capture_pipes[i]; | |
1144 | if (pipe && pipe->substream) | |
1145 | vx_pcm_capture_update(chip, pipe->substream, pipe); | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | ||
1150 | /* | |
25985edc | 1151 | * vx_init_audio_io - check the available audio i/o and allocate pipe arrays |
1da177e4 | 1152 | */ |
af26367f | 1153 | static int vx_init_audio_io(struct vx_core *chip) |
1da177e4 LT |
1154 | { |
1155 | struct vx_rmh rmh; | |
1156 | int preferred; | |
1157 | ||
1158 | vx_init_rmh(&rmh, CMD_SUPPORTED); | |
1159 | if (vx_send_msg(chip, &rmh) < 0) { | |
1160 | snd_printk(KERN_ERR "vx: cannot get the supported audio data\n"); | |
1161 | return -ENXIO; | |
1162 | } | |
1163 | ||
1164 | chip->audio_outs = rmh.Stat[0] & MASK_FIRST_FIELD; | |
1165 | chip->audio_ins = (rmh.Stat[0] >> (FIELD_SIZE*2)) & MASK_FIRST_FIELD; | |
1166 | chip->audio_info = rmh.Stat[1]; | |
1167 | ||
1168 | /* allocate pipes */ | |
59feddb2 | 1169 | chip->playback_pipes = kcalloc(chip->audio_outs, sizeof(struct vx_pipe *), GFP_KERNEL); |
ac57b849 AD |
1170 | if (!chip->playback_pipes) |
1171 | return -ENOMEM; | |
59feddb2 | 1172 | chip->capture_pipes = kcalloc(chip->audio_ins, sizeof(struct vx_pipe *), GFP_KERNEL); |
ac57b849 AD |
1173 | if (!chip->capture_pipes) { |
1174 | kfree(chip->playback_pipes); | |
1da177e4 | 1175 | return -ENOMEM; |
ac57b849 | 1176 | } |
1da177e4 | 1177 | |
1da177e4 LT |
1178 | preferred = chip->ibl.size; |
1179 | chip->ibl.size = 0; | |
1180 | vx_set_ibl(chip, &chip->ibl); /* query the info */ | |
1181 | if (preferred > 0) { | |
af26367f TI |
1182 | chip->ibl.size = ((preferred + chip->ibl.granularity - 1) / |
1183 | chip->ibl.granularity) * chip->ibl.granularity; | |
1da177e4 LT |
1184 | if (chip->ibl.size > chip->ibl.max_size) |
1185 | chip->ibl.size = chip->ibl.max_size; | |
1186 | } else | |
1187 | chip->ibl.size = chip->ibl.min_size; /* set to the minimum */ | |
1188 | vx_set_ibl(chip, &chip->ibl); | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | ||
1194 | /* | |
1195 | * free callback for pcm | |
1196 | */ | |
af26367f | 1197 | static void snd_vx_pcm_free(struct snd_pcm *pcm) |
1da177e4 | 1198 | { |
af26367f | 1199 | struct vx_core *chip = pcm->private_data; |
1da177e4 | 1200 | chip->pcm[pcm->device] = NULL; |
4d572776 JJ |
1201 | kfree(chip->playback_pipes); |
1202 | chip->playback_pipes = NULL; | |
1203 | kfree(chip->capture_pipes); | |
1204 | chip->capture_pipes = NULL; | |
1da177e4 LT |
1205 | } |
1206 | ||
1207 | /* | |
1208 | * snd_vx_pcm_new - create and initialize a pcm | |
1209 | */ | |
af26367f | 1210 | int snd_vx_pcm_new(struct vx_core *chip) |
1da177e4 | 1211 | { |
af26367f | 1212 | struct snd_pcm *pcm; |
1da177e4 LT |
1213 | unsigned int i; |
1214 | int err; | |
1215 | ||
1216 | if ((err = vx_init_audio_io(chip)) < 0) | |
1217 | return err; | |
1218 | ||
1219 | for (i = 0; i < chip->hw->num_codecs; i++) { | |
1220 | unsigned int outs, ins; | |
1221 | outs = chip->audio_outs > i * 2 ? 1 : 0; | |
1222 | ins = chip->audio_ins > i * 2 ? 1 : 0; | |
1223 | if (! outs && ! ins) | |
1224 | break; | |
1225 | err = snd_pcm_new(chip->card, "VX PCM", i, | |
1226 | outs, ins, &pcm); | |
1227 | if (err < 0) | |
1228 | return err; | |
1229 | if (outs) | |
1230 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &vx_pcm_playback_ops); | |
1231 | if (ins) | |
1232 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &vx_pcm_capture_ops); | |
748a76b2 TI |
1233 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC, |
1234 | snd_dma_continuous_data(GFP_KERNEL | GFP_DMA32), | |
1235 | 0, 0); | |
1da177e4 LT |
1236 | |
1237 | pcm->private_data = chip; | |
1238 | pcm->private_free = snd_vx_pcm_free; | |
1239 | pcm->info_flags = 0; | |
db0a5214 | 1240 | pcm->nonatomic = true; |
1da177e4 LT |
1241 | strcpy(pcm->name, chip->card->shortname); |
1242 | chip->pcm[i] = pcm; | |
1243 | } | |
1244 | ||
1245 | return 0; | |
1246 | } |