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ASoC: wm8962: Replace direct snd_soc_codec dapm field access
[deliverable/linux.git] / sound / soc / soc-pcm.c
CommitLineData
ddee627c
LG		 1/*
2 * soc-pcm.c -- ALSA SoC PCM
3 *
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
8 *
9 * Authors: Liam Girdwood <lrg@ti.com>
c8dd1fec 10 * Mark Brown <broonie@opensource.wolfsonmicro.com>
ddee627c
LG		 11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 */
18
19#include <linux/kernel.h>
20#include <linux/init.h>
21#include <linux/delay.h>
988e8cc4 22#include <linux/pinctrl/consumer.h>
d6652ef8 23#include <linux/pm_runtime.h>
ddee627c
LG		 24#include <linux/slab.h>
25#include <linux/workqueue.h>
01d7584c 26#include <linux/export.h>
f86dcef8 27#include <linux/debugfs.h>
ddee627c
LG		 28#include <sound/core.h>
29#include <sound/pcm.h>
30#include <sound/pcm_params.h>
31#include <sound/soc.h>
01d7584c 32#include <sound/soc-dpcm.h>
ddee627c
LG		 33#include <sound/initval.h>
34
01d7584c
LG		 35#define DPCM_MAX_BE_USERS 8
36
24894b76
LPC		 37/**
38 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
39 * @rtd: ASoC PCM runtime that is activated
40 * @stream: Direction of the PCM stream
41 *
42 * Increments the active count for all the DAIs and components attached to a PCM
43 * runtime. Should typically be called when a stream is opened.
44 *
45 * Must be called with the rtd->pcm_mutex being held
46 */
47void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream)
48{
49 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 50 int i;
24894b76
LPC		 51
52 lockdep_assert_held(&rtd->pcm_mutex);
53
54 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
55 cpu_dai->playback_active++;
2e5894d7
BC		 56 for (i = 0; i < rtd->num_codecs; i++)
57 rtd->codec_dais[i]->playback_active++;
24894b76
LPC		 58 } else {
59 cpu_dai->capture_active++;
2e5894d7
BC		 60 for (i = 0; i < rtd->num_codecs; i++)
61 rtd->codec_dais[i]->capture_active++;
24894b76
LPC		 62 }
63
64 cpu_dai->active++;
cdde4ccb 65 cpu_dai->component->active++;
2e5894d7
BC		 66 for (i = 0; i < rtd->num_codecs; i++) {
67 rtd->codec_dais[i]->active++;
68 rtd->codec_dais[i]->component->active++;
69 }
24894b76
LPC		 70}
71
72/**
73 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
74 * @rtd: ASoC PCM runtime that is deactivated
75 * @stream: Direction of the PCM stream
76 *
77 * Decrements the active count for all the DAIs and components attached to a PCM
78 * runtime. Should typically be called when a stream is closed.
79 *
80 * Must be called with the rtd->pcm_mutex being held
81 */
82void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream)
83{
84 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 85 int i;
24894b76
LPC		 86
87 lockdep_assert_held(&rtd->pcm_mutex);
88
89 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
90 cpu_dai->playback_active--;
2e5894d7
BC		 91 for (i = 0; i < rtd->num_codecs; i++)
92 rtd->codec_dais[i]->playback_active--;
24894b76
LPC		 93 } else {
94 cpu_dai->capture_active--;
2e5894d7
BC		 95 for (i = 0; i < rtd->num_codecs; i++)
96 rtd->codec_dais[i]->capture_active--;
24894b76
LPC		 97 }
98
99 cpu_dai->active--;
cdde4ccb 100 cpu_dai->component->active--;
2e5894d7
BC		 101 for (i = 0; i < rtd->num_codecs; i++) {
102 rtd->codec_dais[i]->component->active--;
103 rtd->codec_dais[i]->active--;
104 }
24894b76
LPC		 105}
106
208a1589
LPC		 107/**
108 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
109 * @rtd: The ASoC PCM runtime that should be checked.
110 *
111 * This function checks whether the power down delay should be ignored for a
112 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
113 * been configured to ignore the delay, or if none of the components benefits
114 * from having the delay.
115 */
116bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
117{
2e5894d7
BC		 118 int i;
119 bool ignore = true;
120
208a1589
LPC		 121 if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
122 return true;
123
2e5894d7
BC		 124 for (i = 0; i < rtd->num_codecs; i++)
125 ignore &= rtd->codec_dais[i]->component->ignore_pmdown_time;
126
127 return rtd->cpu_dai->component->ignore_pmdown_time && ignore;
208a1589
LPC		 128}
129
90996f43
LPC		 130/**
131 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
132 * @substream: the pcm substream
133 * @hw: the hardware parameters
134 *
135 * Sets the substream runtime hardware parameters.
136 */
137int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
138 const struct snd_pcm_hardware *hw)
139{
140 struct snd_pcm_runtime *runtime = substream->runtime;
141 runtime->hw.info = hw->info;
142 runtime->hw.formats = hw->formats;
143 runtime->hw.period_bytes_min = hw->period_bytes_min;
144 runtime->hw.period_bytes_max = hw->period_bytes_max;
145 runtime->hw.periods_min = hw->periods_min;
146 runtime->hw.periods_max = hw->periods_max;
147 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
148 runtime->hw.fifo_size = hw->fifo_size;
149 return 0;
150}
151EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
152
01d7584c 153/* DPCM stream event, send event to FE and all active BEs. */
23607025 154int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
01d7584c
LG		 155 int event)
156{
157 struct snd_soc_dpcm *dpcm;
158
159 list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) {
160
161 struct snd_soc_pcm_runtime *be = dpcm->be;
162
103d84a3 163 dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
01d7584c
LG		 164 be->dai_link->name, event, dir);
165
166 snd_soc_dapm_stream_event(be, dir, event);
167 }
168
169 snd_soc_dapm_stream_event(fe, dir, event);
170
171 return 0;
172}
173
17841020
DA		 174static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
175 struct snd_soc_dai *soc_dai)
ddee627c
LG		 176{
177 struct snd_soc_pcm_runtime *rtd = substream->private_data;
ddee627c
LG		 178 int ret;
179
3635bf09
NC		 180 if (soc_dai->rate && (soc_dai->driver->symmetric_rates ||
181 rtd->dai_link->symmetric_rates)) {
182 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n",
183 soc_dai->rate);
184
185 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
186 SNDRV_PCM_HW_PARAM_RATE,
187 soc_dai->rate, soc_dai->rate);
188 if (ret < 0) {
189 dev_err(soc_dai->dev,
190 "ASoC: Unable to apply rate constraint: %d\n",
191 ret);
192 return ret;
193 }
194 }
ddee627c 195
3635bf09
NC		 196 if (soc_dai->channels && (soc_dai->driver->symmetric_channels ||
197 rtd->dai_link->symmetric_channels)) {
198 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n",
199 soc_dai->channels);
ddee627c 200
3635bf09
NC		 201 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
202 SNDRV_PCM_HW_PARAM_CHANNELS,
203 soc_dai->channels,
204 soc_dai->channels);
205 if (ret < 0) {
206 dev_err(soc_dai->dev,
207 "ASoC: Unable to apply channel symmetry constraint: %d\n",
208 ret);
209 return ret;
210 }
ddee627c
LG		 211 }
212
3635bf09
NC		 213 if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits ||
214 rtd->dai_link->symmetric_samplebits)) {
215 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n",
216 soc_dai->sample_bits);
ddee627c 217
3635bf09
NC		 218 ret = snd_pcm_hw_constraint_minmax(substream->runtime,
219 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
220 soc_dai->sample_bits,
221 soc_dai->sample_bits);
222 if (ret < 0) {
223 dev_err(soc_dai->dev,
224 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
225 ret);
226 return ret;
227 }
ddee627c
LG		 228 }
229
230 return 0;
231}
232
3635bf09
NC		 233static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
234 struct snd_pcm_hw_params *params)
235{
236 struct snd_soc_pcm_runtime *rtd = substream->private_data;
237 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 238 unsigned int rate, channels, sample_bits, symmetry, i;
3635bf09
NC		 239
240 rate = params_rate(params);
241 channels = params_channels(params);
242 sample_bits = snd_pcm_format_physical_width(params_format(params));
243
244 /* reject unmatched parameters when applying symmetry */
245 symmetry = cpu_dai->driver->symmetric_rates ||
3635bf09 246 rtd->dai_link->symmetric_rates;
2e5894d7
BC		 247
248 for (i = 0; i < rtd->num_codecs; i++)
249 symmetry |= rtd->codec_dais[i]->driver->symmetric_rates;
250
3635bf09
NC		 251 if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) {
252 dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
253 cpu_dai->rate, rate);
254 return -EINVAL;
ddee627c
LG		 255 }
256
3635bf09 257 symmetry = cpu_dai->driver->symmetric_channels ||
3635bf09 258 rtd->dai_link->symmetric_channels;
2e5894d7
BC		 259
260 for (i = 0; i < rtd->num_codecs; i++)
261 symmetry |= rtd->codec_dais[i]->driver->symmetric_channels;
262
3635bf09
NC		 263 if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) {
264 dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
265 cpu_dai->channels, channels);
266 return -EINVAL;
267 }
ddee627c 268
3635bf09 269 symmetry = cpu_dai->driver->symmetric_samplebits ||
3635bf09 270 rtd->dai_link->symmetric_samplebits;
2e5894d7
BC		 271
272 for (i = 0; i < rtd->num_codecs; i++)
273 symmetry |= rtd->codec_dais[i]->driver->symmetric_samplebits;
274
3635bf09
NC		 275 if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) {
276 dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
277 cpu_dai->sample_bits, sample_bits);
278 return -EINVAL;
ddee627c
LG		 279 }
280
281 return 0;
282}
283
62e5f676
LPC		 284static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
285{
286 struct snd_soc_pcm_runtime *rtd = substream->private_data;
287 struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver;
62e5f676 288 struct snd_soc_dai_link *link = rtd->dai_link;
2e5894d7 289 unsigned int symmetry, i;
62e5f676 290
2e5894d7
BC		 291 symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
292 cpu_driver->symmetric_channels || link->symmetric_channels ||
293 cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
62e5f676 294
2e5894d7
BC		 295 for (i = 0; i < rtd->num_codecs; i++)
296 symmetry = symmetry ||
297 rtd->codec_dais[i]->driver->symmetric_rates ||
298 rtd->codec_dais[i]->driver->symmetric_channels ||
299 rtd->codec_dais[i]->driver->symmetric_samplebits;
300
301 return symmetry;
62e5f676
LPC		 302}
303
2e5894d7 304static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
58ba9b25 305{
2e5894d7 306 struct snd_soc_pcm_runtime *rtd = substream->private_data;
c6068d3a 307 int ret;
58ba9b25
MB		 308
309 if (!bits)
310 return;
311
0e2a3751
LPC		 312 ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
313 if (ret != 0)
314 dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
315 bits, ret);
58ba9b25
MB		 316}
317
c8dd1fec
BC		 318static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
319{
320 struct snd_soc_pcm_runtime *rtd = substream->private_data;
321 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 322 struct snd_soc_dai *codec_dai;
323 int i;
c8dd1fec
BC		 324 unsigned int bits = 0, cpu_bits;
325
326 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
2e5894d7
BC		 327 for (i = 0; i < rtd->num_codecs; i++) {
328 codec_dai = rtd->codec_dais[i];
329 if (codec_dai->driver->playback.sig_bits == 0) {
330 bits = 0;
331 break;
332 }
333 bits = max(codec_dai->driver->playback.sig_bits, bits);
334 }
c8dd1fec
BC		 335 cpu_bits = cpu_dai->driver->playback.sig_bits;
336 } else {
2e5894d7
BC		 337 for (i = 0; i < rtd->num_codecs; i++) {
338 codec_dai = rtd->codec_dais[i];
5e63dfcc 339 if (codec_dai->driver->capture.sig_bits == 0) {
2e5894d7
BC		 340 bits = 0;
341 break;
342 }
343 bits = max(codec_dai->driver->capture.sig_bits, bits);
344 }
c8dd1fec
BC		 345 cpu_bits = cpu_dai->driver->capture.sig_bits;
346 }
347
2e5894d7
BC		 348 soc_pcm_set_msb(substream, bits);
349 soc_pcm_set_msb(substream, cpu_bits);
c8dd1fec
BC		 350}
351
2e5894d7 352static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
bd477c31 353{
2e5894d7 354 struct snd_pcm_runtime *runtime = substream->runtime;
78e45c99 355 struct snd_pcm_hardware *hw = &runtime->hw;
2e5894d7
BC		 356 struct snd_soc_pcm_runtime *rtd = substream->private_data;
357 struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver;
358 struct snd_soc_dai_driver *codec_dai_drv;
359 struct snd_soc_pcm_stream *codec_stream;
360 struct snd_soc_pcm_stream *cpu_stream;
361 unsigned int chan_min = 0, chan_max = UINT_MAX;
362 unsigned int rate_min = 0, rate_max = UINT_MAX;
363 unsigned int rates = UINT_MAX;
364 u64 formats = ULLONG_MAX;
365 int i;
78e45c99 366
2e5894d7
BC		 367 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
368 cpu_stream = &cpu_dai_drv->playback;
16d7ea91 369 else
2e5894d7 370 cpu_stream = &cpu_dai_drv->capture;
78e45c99 371
2e5894d7
BC		 372 /* first calculate min/max only for CODECs in the DAI link */
373 for (i = 0; i < rtd->num_codecs; i++) {
374 codec_dai_drv = rtd->codec_dais[i]->driver;
375 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
376 codec_stream = &codec_dai_drv->playback;
377 else
378 codec_stream = &codec_dai_drv->capture;
379 chan_min = max(chan_min, codec_stream->channels_min);
380 chan_max = min(chan_max, codec_stream->channels_max);
381 rate_min = max(rate_min, codec_stream->rate_min);
382 rate_max = min_not_zero(rate_max, codec_stream->rate_max);
383 formats &= codec_stream->formats;
384 rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates);
385 }
386
387 /*
388 * chan min/max cannot be enforced if there are multiple CODEC DAIs
389 * connected to a single CPU DAI, use CPU DAI's directly and let
390 * channel allocation be fixed up later
391 */
392 if (rtd->num_codecs > 1) {
393 chan_min = cpu_stream->channels_min;
394 chan_max = cpu_stream->channels_max;
395 }
396
397 hw->channels_min = max(chan_min, cpu_stream->channels_min);
398 hw->channels_max = min(chan_max, cpu_stream->channels_max);
399 if (hw->formats)
400 hw->formats &= formats & cpu_stream->formats;
401 else
402 hw->formats = formats & cpu_stream->formats;
403 hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
78e45c99
LPC		 404
405 snd_pcm_limit_hw_rates(runtime);
406
407 hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
2e5894d7 408 hw->rate_min = max(hw->rate_min, rate_min);
78e45c99 409 hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
2e5894d7 410 hw->rate_max = min_not_zero(hw->rate_max, rate_max);
bd477c31
LPC		 411}
412
ddee627c
LG		 413/*
414 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
415 * then initialized and any private data can be allocated. This also calls
416 * startup for the cpu DAI, platform, machine and codec DAI.
417 */
418static int soc_pcm_open(struct snd_pcm_substream *substream)
419{
420 struct snd_soc_pcm_runtime *rtd = substream->private_data;
421 struct snd_pcm_runtime *runtime = substream->runtime;
422 struct snd_soc_platform *platform = rtd->platform;
423 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 424 struct snd_soc_dai *codec_dai;
425 const char *codec_dai_name = "multicodec";
426 int i, ret = 0;
ddee627c 427
988e8cc4 428 pinctrl_pm_select_default_state(cpu_dai->dev);
2e5894d7
BC		 429 for (i = 0; i < rtd->num_codecs; i++)
430 pinctrl_pm_select_default_state(rtd->codec_dais[i]->dev);
d6652ef8 431 pm_runtime_get_sync(cpu_dai->dev);
2e5894d7
BC		 432 for (i = 0; i < rtd->num_codecs; i++)
433 pm_runtime_get_sync(rtd->codec_dais[i]->dev);
d6652ef8
MB		 434 pm_runtime_get_sync(platform->dev);
435
b8c0dab9 436 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c
LG		 437
438 /* startup the audio subsystem */
c5914b0a 439 if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) {
ddee627c
LG		 440 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
441 if (ret < 0) {
103d84a3
LG		 442 dev_err(cpu_dai->dev, "ASoC: can't open interface"
443 " %s: %d\n", cpu_dai->name, ret);
ddee627c
LG		 444 goto out;
445 }
446 }
447
448 if (platform->driver->ops && platform->driver->ops->open) {
449 ret = platform->driver->ops->open(substream);
450 if (ret < 0) {
103d84a3 451 dev_err(platform->dev, "ASoC: can't open platform"
f4333203 452 " %s: %d\n", platform->component.name, ret);
ddee627c
LG		 453 goto platform_err;
454 }
455 }
456
2e5894d7
BC		 457 for (i = 0; i < rtd->num_codecs; i++) {
458 codec_dai = rtd->codec_dais[i];
459 if (codec_dai->driver->ops && codec_dai->driver->ops->startup) {
460 ret = codec_dai->driver->ops->startup(substream,
461 codec_dai);
462 if (ret < 0) {
463 dev_err(codec_dai->dev,
464 "ASoC: can't open codec %s: %d\n",
465 codec_dai->name, ret);
466 goto codec_dai_err;
467 }
ddee627c 468 }
2e5894d7
BC		 469
470 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
471 codec_dai->tx_mask = 0;
472 else
473 codec_dai->rx_mask = 0;
ddee627c
LG		 474 }
475
476 if (rtd->dai_link->ops && rtd->dai_link->ops->startup) {
477 ret = rtd->dai_link->ops->startup(substream);
478 if (ret < 0) {
103d84a3 479 pr_err("ASoC: %s startup failed: %d\n",
25bfe662 480 rtd->dai_link->name, ret);
ddee627c
LG		 481 goto machine_err;
482 }
483 }
484
01d7584c
LG		 485 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
486 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
487 goto dynamic;
488
ddee627c 489 /* Check that the codec and cpu DAIs are compatible */
2e5894d7
BC		 490 soc_pcm_init_runtime_hw(substream);
491
492 if (rtd->num_codecs == 1)
493 codec_dai_name = rtd->codec_dai->name;
ddee627c 494
62e5f676
LPC		 495 if (soc_pcm_has_symmetry(substream))
496 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
497
ddee627c 498 ret = -EINVAL;
ddee627c 499 if (!runtime->hw.rates) {
103d84a3 500 printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
2e5894d7 501 codec_dai_name, cpu_dai->name);
ddee627c
LG		 502 goto config_err;
503 }
504 if (!runtime->hw.formats) {
103d84a3 505 printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
2e5894d7 506 codec_dai_name, cpu_dai->name);
ddee627c
LG		 507 goto config_err;
508 }
509 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
510 runtime->hw.channels_min > runtime->hw.channels_max) {
103d84a3 511 printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
2e5894d7 512 codec_dai_name, cpu_dai->name);
ddee627c
LG		 513 goto config_err;
514 }
515
c8dd1fec 516 soc_pcm_apply_msb(substream);
58ba9b25 517
ddee627c 518 /* Symmetry only applies if we've already got an active stream. */
17841020
DA		 519 if (cpu_dai->active) {
520 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
521 if (ret != 0)
522 goto config_err;
523 }
524
2e5894d7
BC		 525 for (i = 0; i < rtd->num_codecs; i++) {
526 if (rtd->codec_dais[i]->active) {
527 ret = soc_pcm_apply_symmetry(substream,
528 rtd->codec_dais[i]);
529 if (ret != 0)
530 goto config_err;
531 }
ddee627c
LG		 532 }
533
103d84a3 534 pr_debug("ASoC: %s <-> %s info:\n",
2e5894d7 535 codec_dai_name, cpu_dai->name);
103d84a3
LG		 536 pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates);
537 pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min,
ddee627c 538 runtime->hw.channels_max);
103d84a3 539 pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
ddee627c
LG		 540 runtime->hw.rate_max);
541
01d7584c 542dynamic:
24894b76
LPC		 543
544 snd_soc_runtime_activate(rtd, substream->stream);
545
b8c0dab9 546 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 547 return 0;
548
549config_err:
550 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
551 rtd->dai_link->ops->shutdown(substream);
552
553machine_err:
2e5894d7 554 i = rtd->num_codecs;
ddee627c
LG		 555
556codec_dai_err:
2e5894d7
BC		 557 while (--i >= 0) {
558 codec_dai = rtd->codec_dais[i];
559 if (codec_dai->driver->ops->shutdown)
560 codec_dai->driver->ops->shutdown(substream, codec_dai);
561 }
562
ddee627c
LG		 563 if (platform->driver->ops && platform->driver->ops->close)
564 platform->driver->ops->close(substream);
565
566platform_err:
567 if (cpu_dai->driver->ops->shutdown)
568 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
569out:
b8c0dab9 570 mutex_unlock(&rtd->pcm_mutex);
d6652ef8
MB		 571
572 pm_runtime_put(platform->dev);
2e5894d7
BC		 573 for (i = 0; i < rtd->num_codecs; i++)
574 pm_runtime_put(rtd->codec_dais[i]->dev);
d6652ef8 575 pm_runtime_put(cpu_dai->dev);
2e5894d7
BC		 576 for (i = 0; i < rtd->num_codecs; i++) {
577 if (!rtd->codec_dais[i]->active)
578 pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev);
579 }
988e8cc4
NC		 580 if (!cpu_dai->active)
581 pinctrl_pm_select_sleep_state(cpu_dai->dev);
d6652ef8 582
ddee627c
LG		 583 return ret;
584}
585
586/*
587 * Power down the audio subsystem pmdown_time msecs after close is called.
588 * This is to ensure there are no pops or clicks in between any music tracks
589 * due to DAPM power cycling.
590 */
591static void close_delayed_work(struct work_struct *work)
592{
593 struct snd_soc_pcm_runtime *rtd =
594 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
2e5894d7 595 struct snd_soc_dai *codec_dai = rtd->codec_dais[0];
ddee627c 596
b8c0dab9 597 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c 598
103d84a3 599 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
ddee627c
LG		 600 codec_dai->driver->playback.stream_name,
601 codec_dai->playback_active ? "active" : "inactive",
9bffb1fb 602 rtd->pop_wait ? "yes" : "no");
ddee627c
LG		 603
604 /* are we waiting on this codec DAI stream */
9bffb1fb
MLC		 605 if (rtd->pop_wait == 1) {
606 rtd->pop_wait = 0;
7bd3a6f3 607 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
d9b0951b 608 SND_SOC_DAPM_STREAM_STOP);
ddee627c
LG		 609 }
610
b8c0dab9 611 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 612}
613
614/*
615 * Called by ALSA when a PCM substream is closed. Private data can be
616 * freed here. The cpu DAI, codec DAI, machine and platform are also
617 * shutdown.
618 */
91d5e6b4 619static int soc_pcm_close(struct snd_pcm_substream *substream)
ddee627c
LG		 620{
621 struct snd_soc_pcm_runtime *rtd = substream->private_data;
622 struct snd_soc_platform *platform = rtd->platform;
623 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 624 struct snd_soc_dai *codec_dai;
625 int i;
ddee627c 626
b8c0dab9 627 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c 628
24894b76 629 snd_soc_runtime_deactivate(rtd, substream->stream);
ddee627c 630
17841020
DA		 631 /* clear the corresponding DAIs rate when inactive */
632 if (!cpu_dai->active)
633 cpu_dai->rate = 0;
634
2e5894d7
BC		 635 for (i = 0; i < rtd->num_codecs; i++) {
636 codec_dai = rtd->codec_dais[i];
637 if (!codec_dai->active)
638 codec_dai->rate = 0;
639 }
25b76791 640
ae11601b
RB		 641 snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
642
ddee627c
LG		 643 if (cpu_dai->driver->ops->shutdown)
644 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
645
2e5894d7
BC		 646 for (i = 0; i < rtd->num_codecs; i++) {
647 codec_dai = rtd->codec_dais[i];
648 if (codec_dai->driver->ops->shutdown)
649 codec_dai->driver->ops->shutdown(substream, codec_dai);
650 }
ddee627c
LG		 651
652 if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
653 rtd->dai_link->ops->shutdown(substream);
654
655 if (platform->driver->ops && platform->driver->ops->close)
656 platform->driver->ops->close(substream);
ddee627c
LG		 657
658 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
208a1589 659 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
1d69c5c5
PU		 660 /* powered down playback stream now */
661 snd_soc_dapm_stream_event(rtd,
7bd3a6f3 662 SNDRV_PCM_STREAM_PLAYBACK,
7bd3a6f3 663 SND_SOC_DAPM_STREAM_STOP);
1d69c5c5
PU		 664 } else {
665 /* start delayed pop wq here for playback streams */
9bffb1fb 666 rtd->pop_wait = 1;
d4e1a73a
MB		 667 queue_delayed_work(system_power_efficient_wq,
668 &rtd->delayed_work,
669 msecs_to_jiffies(rtd->pmdown_time));
1d69c5c5 670 }
ddee627c
LG		 671 } else {
672 /* capture streams can be powered down now */
7bd3a6f3 673 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
d9b0951b 674 SND_SOC_DAPM_STREAM_STOP);
ddee627c
LG		 675 }
676
b8c0dab9 677 mutex_unlock(&rtd->pcm_mutex);
d6652ef8
MB		 678
679 pm_runtime_put(platform->dev);
2e5894d7
BC		 680 for (i = 0; i < rtd->num_codecs; i++)
681 pm_runtime_put(rtd->codec_dais[i]->dev);
d6652ef8 682 pm_runtime_put(cpu_dai->dev);
2e5894d7
BC		 683 for (i = 0; i < rtd->num_codecs; i++) {
684 if (!rtd->codec_dais[i]->active)
685 pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev);
686 }
988e8cc4
NC		 687 if (!cpu_dai->active)
688 pinctrl_pm_select_sleep_state(cpu_dai->dev);
d6652ef8 689
ddee627c
LG		 690 return 0;
691}
692
693/*
694 * Called by ALSA when the PCM substream is prepared, can set format, sample
695 * rate, etc. This function is non atomic and can be called multiple times,
696 * it can refer to the runtime info.
697 */
698static int soc_pcm_prepare(struct snd_pcm_substream *substream)
699{
700 struct snd_soc_pcm_runtime *rtd = substream->private_data;
701 struct snd_soc_platform *platform = rtd->platform;
702 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 703 struct snd_soc_dai *codec_dai;
704 int i, ret = 0;
ddee627c 705
b8c0dab9 706 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c
LG		 707
708 if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) {
709 ret = rtd->dai_link->ops->prepare(substream);
710 if (ret < 0) {
103d84a3
LG		 711 dev_err(rtd->card->dev, "ASoC: machine prepare error:"
712 " %d\n", ret);
ddee627c
LG		 713 goto out;
714 }
715 }
716
717 if (platform->driver->ops && platform->driver->ops->prepare) {
718 ret = platform->driver->ops->prepare(substream);
719 if (ret < 0) {
103d84a3
LG		 720 dev_err(platform->dev, "ASoC: platform prepare error:"
721 " %d\n", ret);
ddee627c
LG		 722 goto out;
723 }
724 }
725
2e5894d7
BC		 726 for (i = 0; i < rtd->num_codecs; i++) {
727 codec_dai = rtd->codec_dais[i];
728 if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) {
729 ret = codec_dai->driver->ops->prepare(substream,
730 codec_dai);
731 if (ret < 0) {
732 dev_err(codec_dai->dev,
90cc7f1c
JN		 733 "ASoC: codec DAI prepare error: %d\n",
734 ret);
2e5894d7
BC		 735 goto out;
736 }
ddee627c
LG		 737 }
738 }
739
c5914b0a 740 if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) {
ddee627c
LG		 741 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
742 if (ret < 0) {
90cc7f1c
JN		 743 dev_err(cpu_dai->dev,
744 "ASoC: cpu DAI prepare error: %d\n", ret);
ddee627c
LG		 745 goto out;
746 }
747 }
748
749 /* cancel any delayed stream shutdown that is pending */
750 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
9bffb1fb
MLC		 751 rtd->pop_wait) {
752 rtd->pop_wait = 0;
ddee627c
LG		 753 cancel_delayed_work(&rtd->delayed_work);
754 }
755
d9b0951b
LG		 756 snd_soc_dapm_stream_event(rtd, substream->stream,
757 SND_SOC_DAPM_STREAM_START);
ddee627c 758
2e5894d7
BC		 759 for (i = 0; i < rtd->num_codecs; i++)
760 snd_soc_dai_digital_mute(rtd->codec_dais[i], 0,
761 substream->stream);
ae11601b 762 snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
ddee627c
LG		 763
764out:
b8c0dab9 765 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 766 return ret;
767}
768
2e5894d7
BC		 769static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params,
770 unsigned int mask)
771{
772 struct snd_interval *interval;
773 int channels = hweight_long(mask);
774
775 interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
776 interval->min = channels;
777 interval->max = channels;
778}
779
93e6958a
BC		 780int soc_dai_hw_params(struct snd_pcm_substream *substream,
781 struct snd_pcm_hw_params *params,
782 struct snd_soc_dai *dai)
783{
784 int ret;
785
786 if (dai->driver->ops && dai->driver->ops->hw_params) {
787 ret = dai->driver->ops->hw_params(substream, params, dai);
788 if (ret < 0) {
789 dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n",
790 dai->name, ret);
791 return ret;
792 }
793 }
794
795 return 0;
796}
797
ddee627c
LG		 798/*
799 * Called by ALSA when the hardware params are set by application. This
800 * function can also be called multiple times and can allocate buffers
801 * (using snd_pcm_lib_* ). It's non-atomic.
802 */
803static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
804 struct snd_pcm_hw_params *params)
805{
806 struct snd_soc_pcm_runtime *rtd = substream->private_data;
807 struct snd_soc_platform *platform = rtd->platform;
808 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 809 int i, ret = 0;
ddee627c 810
b8c0dab9 811 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c 812
3635bf09
NC		 813 ret = soc_pcm_params_symmetry(substream, params);
814 if (ret)
815 goto out;
816
ddee627c
LG		 817 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
818 ret = rtd->dai_link->ops->hw_params(substream, params);
819 if (ret < 0) {
103d84a3
LG		 820 dev_err(rtd->card->dev, "ASoC: machine hw_params"
821 " failed: %d\n", ret);
ddee627c
LG		 822 goto out;
823 }
824 }
825
2e5894d7
BC		 826 for (i = 0; i < rtd->num_codecs; i++) {
827 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
828 struct snd_pcm_hw_params codec_params;
829
830 /* copy params for each codec */
831 codec_params = *params;
832
833 /* fixup params based on TDM slot masks */
834 if (codec_dai->tx_mask)
835 soc_pcm_codec_params_fixup(&codec_params,
836 codec_dai->tx_mask);
837 if (codec_dai->rx_mask)
838 soc_pcm_codec_params_fixup(&codec_params,
839 codec_dai->rx_mask);
840
93e6958a
BC		 841 ret = soc_dai_hw_params(substream, &codec_params, codec_dai);
842 if(ret < 0)
ddee627c 843 goto codec_err;
ddee627c 844
2e5894d7
BC		 845 codec_dai->rate = params_rate(&codec_params);
846 codec_dai->channels = params_channels(&codec_params);
847 codec_dai->sample_bits = snd_pcm_format_physical_width(
848 params_format(&codec_params));
ddee627c
LG		 849 }
850
93e6958a
BC		 851 ret = soc_dai_hw_params(substream, params, cpu_dai);
852 if (ret < 0)
853 goto interface_err;
ddee627c
LG		 854
855 if (platform->driver->ops && platform->driver->ops->hw_params) {
856 ret = platform->driver->ops->hw_params(substream, params);
857 if (ret < 0) {
103d84a3 858 dev_err(platform->dev, "ASoC: %s hw params failed: %d\n",
f4333203 859 platform->component.name, ret);
ddee627c
LG		 860 goto platform_err;
861 }
862 }
863
3635bf09 864 /* store the parameters for each DAIs */
17841020 865 cpu_dai->rate = params_rate(params);
3635bf09
NC		 866 cpu_dai->channels = params_channels(params);
867 cpu_dai->sample_bits =
868 snd_pcm_format_physical_width(params_format(params));
869
ddee627c 870out:
b8c0dab9 871 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 872 return ret;
873
874platform_err:
c5914b0a 875 if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free)
ddee627c
LG		 876 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
877
878interface_err:
2e5894d7 879 i = rtd->num_codecs;
ddee627c
LG		 880
881codec_err:
2e5894d7
BC		 882 while (--i >= 0) {
883 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
884 if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free)
885 codec_dai->driver->ops->hw_free(substream, codec_dai);
886 codec_dai->rate = 0;
887 }
888
ddee627c
LG		 889 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
890 rtd->dai_link->ops->hw_free(substream);
891
b8c0dab9 892 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 893 return ret;
894}
895
896/*
897 * Frees resources allocated by hw_params, can be called multiple times
898 */
899static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
900{
901 struct snd_soc_pcm_runtime *rtd = substream->private_data;
902 struct snd_soc_platform *platform = rtd->platform;
903 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 904 struct snd_soc_dai *codec_dai;
7f62b6ee 905 bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
2e5894d7 906 int i;
ddee627c 907
b8c0dab9 908 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
ddee627c 909
d3383420
NC		 910 /* clear the corresponding DAIs parameters when going to be inactive */
911 if (cpu_dai->active == 1) {
912 cpu_dai->rate = 0;
913 cpu_dai->channels = 0;
914 cpu_dai->sample_bits = 0;
915 }
916
2e5894d7
BC		 917 for (i = 0; i < rtd->num_codecs; i++) {
918 codec_dai = rtd->codec_dais[i];
919 if (codec_dai->active == 1) {
920 codec_dai->rate = 0;
921 codec_dai->channels = 0;
922 codec_dai->sample_bits = 0;
923 }
d3383420
NC		 924 }
925
ddee627c 926 /* apply codec digital mute */
2e5894d7
BC		 927 for (i = 0; i < rtd->num_codecs; i++) {
928 if ((playback && rtd->codec_dais[i]->playback_active == 1) ||
929 (!playback && rtd->codec_dais[i]->capture_active == 1))
930 snd_soc_dai_digital_mute(rtd->codec_dais[i], 1,
931 substream->stream);
932 }
ddee627c
LG		 933
934 /* free any machine hw params */
935 if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
936 rtd->dai_link->ops->hw_free(substream);
937
938 /* free any DMA resources */
939 if (platform->driver->ops && platform->driver->ops->hw_free)
940 platform->driver->ops->hw_free(substream);
941
942 /* now free hw params for the DAIs */
2e5894d7
BC		 943 for (i = 0; i < rtd->num_codecs; i++) {
944 codec_dai = rtd->codec_dais[i];
945 if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free)
946 codec_dai->driver->ops->hw_free(substream, codec_dai);
947 }
ddee627c 948
c5914b0a 949 if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free)
ddee627c
LG		 950 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
951
b8c0dab9 952 mutex_unlock(&rtd->pcm_mutex);
ddee627c
LG		 953 return 0;
954}
955
956static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
957{
958 struct snd_soc_pcm_runtime *rtd = substream->private_data;
959 struct snd_soc_platform *platform = rtd->platform;
960 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 961 struct snd_soc_dai *codec_dai;
962 int i, ret;
963
964 for (i = 0; i < rtd->num_codecs; i++) {
965 codec_dai = rtd->codec_dais[i];
966 if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) {
967 ret = codec_dai->driver->ops->trigger(substream,
968 cmd, codec_dai);
969 if (ret < 0)
970 return ret;
971 }
ddee627c
LG		 972 }
973
974 if (platform->driver->ops && platform->driver->ops->trigger) {
975 ret = platform->driver->ops->trigger(substream, cmd);
976 if (ret < 0)
977 return ret;
978 }
979
c5914b0a 980 if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) {
ddee627c
LG		 981 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
982 if (ret < 0)
983 return ret;
984 }
4792b0db
JN		 985
986 if (rtd->dai_link->ops && rtd->dai_link->ops->trigger) {
987 ret = rtd->dai_link->ops->trigger(substream, cmd);
988 if (ret < 0)
989 return ret;
990 }
991
ddee627c
LG		 992 return 0;
993}
994
45c0a188
MB		 995static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
996 int cmd)
07bf84aa
LG		 997{
998 struct snd_soc_pcm_runtime *rtd = substream->private_data;
999 struct snd_soc_platform *platform = rtd->platform;
1000 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 1001 struct snd_soc_dai *codec_dai;
1002 int i, ret;
1003
1004 for (i = 0; i < rtd->num_codecs; i++) {
1005 codec_dai = rtd->codec_dais[i];
1006 if (codec_dai->driver->ops &&
1007 codec_dai->driver->ops->bespoke_trigger) {
1008 ret = codec_dai->driver->ops->bespoke_trigger(substream,
1009 cmd, codec_dai);
1010 if (ret < 0)
1011 return ret;
1012 }
07bf84aa
LG		 1013 }
1014
dcf0fa27 1015 if (platform->driver->bespoke_trigger) {
07bf84aa
LG		 1016 ret = platform->driver->bespoke_trigger(substream, cmd);
1017 if (ret < 0)
1018 return ret;
1019 }
1020
c5914b0a 1021 if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) {
07bf84aa
LG		 1022 ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai);
1023 if (ret < 0)
1024 return ret;
1025 }
1026 return 0;
1027}
ddee627c
LG		 1028/*
1029 * soc level wrapper for pointer callback
1030 * If cpu_dai, codec_dai, platform driver has the delay callback, than
1031 * the runtime->delay will be updated accordingly.
1032 */
1033static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1034{
1035 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1036 struct snd_soc_platform *platform = rtd->platform;
1037 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 1038 struct snd_soc_dai *codec_dai;
ddee627c
LG		 1039 struct snd_pcm_runtime *runtime = substream->runtime;
1040 snd_pcm_uframes_t offset = 0;
1041 snd_pcm_sframes_t delay = 0;
2e5894d7
BC		 1042 snd_pcm_sframes_t codec_delay = 0;
1043 int i;
ddee627c
LG		 1044
1045 if (platform->driver->ops && platform->driver->ops->pointer)
1046 offset = platform->driver->ops->pointer(substream);
1047
c5914b0a 1048 if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay)
ddee627c
LG		 1049 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
1050
2e5894d7
BC		 1051 for (i = 0; i < rtd->num_codecs; i++) {
1052 codec_dai = rtd->codec_dais[i];
1053 if (codec_dai->driver->ops && codec_dai->driver->ops->delay)
1054 codec_delay = max(codec_delay,
1055 codec_dai->driver->ops->delay(substream,
1056 codec_dai));
1057 }
1058 delay += codec_delay;
ddee627c 1059
2e5894d7
BC		 1060 /*
1061 * None of the existing platform drivers implement delay(), so
1062 * for now the codec_dai of first multicodec entry is used
1063 */
ddee627c 1064 if (platform->driver->delay)
2e5894d7 1065 delay += platform->driver->delay(substream, rtd->codec_dais[0]);
ddee627c
LG		 1066
1067 runtime->delay = delay;
1068
1069 return offset;
1070}
1071
01d7584c
LG		 1072/* connect a FE and BE */
1073static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1074 struct snd_soc_pcm_runtime *be, int stream)
1075{
1076 struct snd_soc_dpcm *dpcm;
1077
1078 /* only add new dpcms */
1079 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1080 if (dpcm->be == be && dpcm->fe == fe)
1081 return 0;
1082 }
1083
1084 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
1085 if (!dpcm)
1086 return -ENOMEM;
1087
1088 dpcm->be = be;
1089 dpcm->fe = fe;
1090 be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
1091 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
1092 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1093 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
1094
7cc302d2 1095 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
01d7584c
LG		 1096 stream ? "capture" : "playback", fe->dai_link->name,
1097 stream ? "<-" : "->", be->dai_link->name);
1098
f86dcef8 1099#ifdef CONFIG_DEBUG_FS
6553bf06
LPC		 1100 if (fe->debugfs_dpcm_root)
1101 dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
1102 fe->debugfs_dpcm_root, &dpcm->state);
f86dcef8 1103#endif
01d7584c
LG		 1104 return 1;
1105}
1106
1107/* reparent a BE onto another FE */
1108static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1109 struct snd_soc_pcm_runtime *be, int stream)
1110{
1111 struct snd_soc_dpcm *dpcm;
1112 struct snd_pcm_substream *fe_substream, *be_substream;
1113
1114 /* reparent if BE is connected to other FEs */
1115 if (!be->dpcm[stream].users)
1116 return;
1117
1118 be_substream = snd_soc_dpcm_get_substream(be, stream);
1119
1120 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
1121 if (dpcm->fe == fe)
1122 continue;
1123
7cc302d2 1124 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
01d7584c
LG		 1125 stream ? "capture" : "playback",
1126 dpcm->fe->dai_link->name,
1127 stream ? "<-" : "->", dpcm->be->dai_link->name);
1128
1129 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1130 be_substream->runtime = fe_substream->runtime;
1131 break;
1132 }
1133}
1134
1135/* disconnect a BE and FE */
23607025 1136void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1137{
1138 struct snd_soc_dpcm *dpcm, *d;
1139
1140 list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) {
103d84a3 1141 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
01d7584c
LG		 1142 stream ? "capture" : "playback",
1143 dpcm->be->dai_link->name);
1144
1145 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1146 continue;
1147
7cc302d2 1148 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
01d7584c
LG		 1149 stream ? "capture" : "playback", fe->dai_link->name,
1150 stream ? "<-" : "->", dpcm->be->dai_link->name);
1151
1152 /* BEs still alive need new FE */
1153 dpcm_be_reparent(fe, dpcm->be, stream);
1154
f86dcef8
LG		 1155#ifdef CONFIG_DEBUG_FS
1156 debugfs_remove(dpcm->debugfs_state);
1157#endif
01d7584c
LG		 1158 list_del(&dpcm->list_be);
1159 list_del(&dpcm->list_fe);
1160 kfree(dpcm);
1161 }
1162}
1163
1164/* get BE for DAI widget and stream */
1165static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1166 struct snd_soc_dapm_widget *widget, int stream)
1167{
1168 struct snd_soc_pcm_runtime *be;
2e5894d7 1169 int i, j;
01d7584c
LG		 1170
1171 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1172 for (i = 0; i < card->num_links; i++) {
1173 be = &card->rtd[i];
1174
35ea0655
LG		 1175 if (!be->dai_link->no_pcm)
1176 continue;
1177
2e5894d7 1178 if (be->cpu_dai->playback_widget == widget)
01d7584c 1179 return be;
2e5894d7
BC		 1180
1181 for (j = 0; j < be->num_codecs; j++) {
1182 struct snd_soc_dai *dai = be->codec_dais[j];
1183 if (dai->playback_widget == widget)
1184 return be;
1185 }
01d7584c
LG		 1186 }
1187 } else {
1188
1189 for (i = 0; i < card->num_links; i++) {
1190 be = &card->rtd[i];
1191
35ea0655
LG		 1192 if (!be->dai_link->no_pcm)
1193 continue;
1194
2e5894d7 1195 if (be->cpu_dai->capture_widget == widget)
01d7584c 1196 return be;
2e5894d7
BC		 1197
1198 for (j = 0; j < be->num_codecs; j++) {
1199 struct snd_soc_dai *dai = be->codec_dais[j];
1200 if (dai->capture_widget == widget)
1201 return be;
1202 }
01d7584c
LG		 1203 }
1204 }
1205
103d84a3 1206 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
01d7584c
LG		 1207 stream ? "capture" : "playback", widget->name);
1208 return NULL;
1209}
1210
1211static inline struct snd_soc_dapm_widget *
37018610 1212 dai_get_widget(struct snd_soc_dai *dai, int stream)
01d7584c
LG		 1213{
1214 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
37018610 1215 return dai->playback_widget;
01d7584c 1216 else
37018610 1217 return dai->capture_widget;
01d7584c
LG		 1218}
1219
1220static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1221 struct snd_soc_dapm_widget *widget)
1222{
1223 int i;
1224
1225 for (i = 0; i < list->num_widgets; i++) {
1226 if (widget == list->widgets[i])
1227 return 1;
1228 }
1229
1230 return 0;
1231}
1232
23607025 1233int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1234 int stream, struct snd_soc_dapm_widget_list **list_)
1235{
1236 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
1237 struct snd_soc_dapm_widget_list *list;
1238 int paths;
1239
1240 list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) +
1241 sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL);
1242 if (list == NULL)
1243 return -ENOMEM;
1244
1245 /* get number of valid DAI paths and their widgets */
1246 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list);
1247
103d84a3 1248 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
01d7584c
LG		 1249 stream ? "capture" : "playback");
1250
1251 *list_ = list;
1252 return paths;
1253}
1254
01d7584c
LG		 1255static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1256 struct snd_soc_dapm_widget_list **list_)
1257{
1258 struct snd_soc_dpcm *dpcm;
1259 struct snd_soc_dapm_widget_list *list = *list_;
1260 struct snd_soc_dapm_widget *widget;
1261 int prune = 0;
1262
1263 /* Destroy any old FE <--> BE connections */
1264 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2e5894d7 1265 unsigned int i;
01d7584c
LG		 1266
1267 /* is there a valid CPU DAI widget for this BE */
37018610 1268 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
01d7584c
LG		 1269
1270 /* prune the BE if it's no longer in our active list */
1271 if (widget && widget_in_list(list, widget))
1272 continue;
1273
1274 /* is there a valid CODEC DAI widget for this BE */
2e5894d7
BC		 1275 for (i = 0; i < dpcm->be->num_codecs; i++) {
1276 struct snd_soc_dai *dai = dpcm->be->codec_dais[i];
1277 widget = dai_get_widget(dai, stream);
01d7584c 1278
2e5894d7
BC		 1279 /* prune the BE if it's no longer in our active list */
1280 if (widget && widget_in_list(list, widget))
1281 continue;
1282 }
01d7584c 1283
103d84a3 1284 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
01d7584c
LG		 1285 stream ? "capture" : "playback",
1286 dpcm->be->dai_link->name, fe->dai_link->name);
1287 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1288 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1289 prune++;
1290 }
1291
103d84a3 1292 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
01d7584c
LG		 1293 return prune;
1294}
1295
1296static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1297 struct snd_soc_dapm_widget_list **list_)
1298{
1299 struct snd_soc_card *card = fe->card;
1300 struct snd_soc_dapm_widget_list *list = *list_;
1301 struct snd_soc_pcm_runtime *be;
1302 int i, new = 0, err;
1303
1304 /* Create any new FE <--> BE connections */
1305 for (i = 0; i < list->num_widgets; i++) {
1306
4616274d
MB		 1307 switch (list->widgets[i]->id) {
1308 case snd_soc_dapm_dai_in:
1309 case snd_soc_dapm_dai_out:
1310 break;
1311 default:
01d7584c 1312 continue;
4616274d 1313 }
01d7584c
LG		 1314
1315 /* is there a valid BE rtd for this widget */
1316 be = dpcm_get_be(card, list->widgets[i], stream);
1317 if (!be) {
103d84a3 1318 dev_err(fe->dev, "ASoC: no BE found for %s\n",
01d7584c
LG		 1319 list->widgets[i]->name);
1320 continue;
1321 }
1322
1323 /* make sure BE is a real BE */
1324 if (!be->dai_link->no_pcm)
1325 continue;
1326
1327 /* don't connect if FE is not running */
23607025 1328 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
01d7584c
LG		 1329 continue;
1330
1331 /* newly connected FE and BE */
1332 err = dpcm_be_connect(fe, be, stream);
1333 if (err < 0) {
103d84a3 1334 dev_err(fe->dev, "ASoC: can't connect %s\n",
01d7584c
LG		 1335 list->widgets[i]->name);
1336 break;
1337 } else if (err == 0) /* already connected */
1338 continue;
1339
1340 /* new */
1341 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1342 new++;
1343 }
1344
103d84a3 1345 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
01d7584c
LG		 1346 return new;
1347}
1348
1349/*
1350 * Find the corresponding BE DAIs that source or sink audio to this
1351 * FE substream.
1352 */
23607025 1353int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1354 int stream, struct snd_soc_dapm_widget_list **list, int new)
1355{
1356 if (new)
1357 return dpcm_add_paths(fe, stream, list);
1358 else
1359 return dpcm_prune_paths(fe, stream, list);
1360}
1361
23607025 1362void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1363{
1364 struct snd_soc_dpcm *dpcm;
1365
1366 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
1367 dpcm->be->dpcm[stream].runtime_update =
1368 SND_SOC_DPCM_UPDATE_NO;
1369}
1370
1371static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1372 int stream)
1373{
1374 struct snd_soc_dpcm *dpcm;
1375
1376 /* disable any enabled and non active backends */
1377 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1378
1379 struct snd_soc_pcm_runtime *be = dpcm->be;
1380 struct snd_pcm_substream *be_substream =
1381 snd_soc_dpcm_get_substream(be, stream);
1382
1383 if (be->dpcm[stream].users == 0)
103d84a3 1384 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1385 stream ? "capture" : "playback",
1386 be->dpcm[stream].state);
1387
1388 if (--be->dpcm[stream].users != 0)
1389 continue;
1390
1391 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1392 continue;
1393
1394 soc_pcm_close(be_substream);
1395 be_substream->runtime = NULL;
1396 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1397 }
1398}
1399
23607025 1400int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1401{
1402 struct snd_soc_dpcm *dpcm;
1403 int err, count = 0;
1404
1405 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1406 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1407
1408 struct snd_soc_pcm_runtime *be = dpcm->be;
1409 struct snd_pcm_substream *be_substream =
1410 snd_soc_dpcm_get_substream(be, stream);
1411
2062b4c5
RKAL		 1412 if (!be_substream) {
1413 dev_err(be->dev, "ASoC: no backend %s stream\n",
1414 stream ? "capture" : "playback");
1415 continue;
1416 }
1417
01d7584c
LG		 1418 /* is this op for this BE ? */
1419 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1420 continue;
1421
1422 /* first time the dpcm is open ? */
1423 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
103d84a3 1424 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
01d7584c
LG		 1425 stream ? "capture" : "playback",
1426 be->dpcm[stream].state);
1427
1428 if (be->dpcm[stream].users++ != 0)
1429 continue;
1430
1431 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1432 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1433 continue;
1434
2062b4c5
RKAL		 1435 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1436 stream ? "capture" : "playback", be->dai_link->name);
01d7584c
LG		 1437
1438 be_substream->runtime = be->dpcm[stream].runtime;
1439 err = soc_pcm_open(be_substream);
1440 if (err < 0) {
103d84a3 1441 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
01d7584c
LG		 1442 be->dpcm[stream].users--;
1443 if (be->dpcm[stream].users < 0)
103d84a3 1444 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
01d7584c
LG		 1445 stream ? "capture" : "playback",
1446 be->dpcm[stream].state);
1447
1448 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1449 goto unwind;
1450 }
1451
1452 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1453 count++;
1454 }
1455
1456 return count;
1457
1458unwind:
1459 /* disable any enabled and non active backends */
1460 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1461 struct snd_soc_pcm_runtime *be = dpcm->be;
1462 struct snd_pcm_substream *be_substream =
1463 snd_soc_dpcm_get_substream(be, stream);
1464
1465 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1466 continue;
1467
1468 if (be->dpcm[stream].users == 0)
103d84a3 1469 dev_err(be->dev, "ASoC: no users %s at close %d\n",
01d7584c
LG		 1470 stream ? "capture" : "playback",
1471 be->dpcm[stream].state);
1472
1473 if (--be->dpcm[stream].users != 0)
1474 continue;
1475
1476 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1477 continue;
1478
1479 soc_pcm_close(be_substream);
1480 be_substream->runtime = NULL;
1481 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1482 }
1483
1484 return err;
1485}
1486
08ae9b45
LPC		 1487static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
1488 struct snd_soc_pcm_stream *stream)
1489{
1490 runtime->hw.rate_min = stream->rate_min;
1491 runtime->hw.rate_max = stream->rate_max;
1492 runtime->hw.channels_min = stream->channels_min;
1493 runtime->hw.channels_max = stream->channels_max;
002220a9
LPC		 1494 if (runtime->hw.formats)
1495 runtime->hw.formats &= stream->formats;
1496 else
1497 runtime->hw.formats = stream->formats;
08ae9b45
LPC		 1498 runtime->hw.rates = stream->rates;
1499}
1500
45c0a188 1501static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
01d7584c
LG		 1502{
1503 struct snd_pcm_runtime *runtime = substream->runtime;
1504 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1505 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1506 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1507
08ae9b45
LPC		 1508 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1509 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
1510 else
1511 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
01d7584c
LG		 1512}
1513
ea9d0d77
TI		 1514static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1515
1516/* Set FE's runtime_update state; the state is protected via PCM stream lock
1517 * for avoiding the race with trigger callback.
1518 * If the state is unset and a trigger is pending while the previous operation,
1519 * process the pending trigger action here.
1520 */
1521static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1522 int stream, enum snd_soc_dpcm_update state)
1523{
1524 struct snd_pcm_substream *substream =
1525 snd_soc_dpcm_get_substream(fe, stream);
1526
1527 snd_pcm_stream_lock_irq(substream);
1528 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1529 dpcm_fe_dai_do_trigger(substream,
1530 fe->dpcm[stream].trigger_pending - 1);
1531 fe->dpcm[stream].trigger_pending = 0;
1532 }
1533 fe->dpcm[stream].runtime_update = state;
1534 snd_pcm_stream_unlock_irq(substream);
1535}
1536
01d7584c
LG		 1537static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1538{
1539 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1540 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1541 int stream = fe_substream->stream, ret = 0;
1542
ea9d0d77 1543 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1544
1545 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1546 if (ret < 0) {
103d84a3 1547 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
01d7584c
LG		 1548 goto be_err;
1549 }
1550
103d84a3 1551 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
01d7584c
LG		 1552
1553 /* start the DAI frontend */
1554 ret = soc_pcm_open(fe_substream);
1555 if (ret < 0) {
103d84a3 1556 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
01d7584c
LG		 1557 goto unwind;
1558 }
1559
1560 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1561
1562 dpcm_set_fe_runtime(fe_substream);
1563 snd_pcm_limit_hw_rates(runtime);
1564
ea9d0d77 1565 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1566 return 0;
1567
1568unwind:
1569 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1570be_err:
ea9d0d77 1571 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1572 return ret;
1573}
1574
23607025 1575int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1576{
1577 struct snd_soc_dpcm *dpcm;
1578
1579 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1580 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1581
1582 struct snd_soc_pcm_runtime *be = dpcm->be;
1583 struct snd_pcm_substream *be_substream =
1584 snd_soc_dpcm_get_substream(be, stream);
1585
1586 /* is this op for this BE ? */
1587 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1588 continue;
1589
1590 if (be->dpcm[stream].users == 0)
103d84a3 1591 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1592 stream ? "capture" : "playback",
1593 be->dpcm[stream].state);
1594
1595 if (--be->dpcm[stream].users != 0)
1596 continue;
1597
1598 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
1599 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN))
1600 continue;
1601
103d84a3 1602 dev_dbg(be->dev, "ASoC: close BE %s\n",
01d7584c
LG		 1603 dpcm->fe->dai_link->name);
1604
1605 soc_pcm_close(be_substream);
1606 be_substream->runtime = NULL;
1607
1608 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1609 }
1610 return 0;
1611}
1612
1613static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
1614{
1615 struct snd_soc_pcm_runtime *fe = substream->private_data;
1616 int stream = substream->stream;
1617
ea9d0d77 1618 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1619
1620 /* shutdown the BEs */
1621 dpcm_be_dai_shutdown(fe, substream->stream);
1622
103d84a3 1623 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
01d7584c
LG		 1624
1625 /* now shutdown the frontend */
1626 soc_pcm_close(substream);
1627
1628 /* run the stream event for each BE */
1629 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
1630
1631 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
ea9d0d77 1632 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1633 return 0;
1634}
1635
23607025 1636int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1637{
1638 struct snd_soc_dpcm *dpcm;
1639
1640 /* only hw_params backends that are either sinks or sources
1641 * to this frontend DAI */
1642 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1643
1644 struct snd_soc_pcm_runtime *be = dpcm->be;
1645 struct snd_pcm_substream *be_substream =
1646 snd_soc_dpcm_get_substream(be, stream);
1647
1648 /* is this op for this BE ? */
1649 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1650 continue;
1651
1652 /* only free hw when no longer used - check all FEs */
1653 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1654 continue;
1655
36fba62c
QZ		 1656 /* do not free hw if this BE is used by other FE */
1657 if (be->dpcm[stream].users > 1)
1658 continue;
1659
01d7584c
LG		 1660 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1661 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
1662 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
08b27848 1663 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
01d7584c
LG		 1664 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1665 continue;
1666
103d84a3 1667 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
01d7584c
LG		 1668 dpcm->fe->dai_link->name);
1669
1670 soc_pcm_hw_free(be_substream);
1671
1672 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
1673 }
1674
1675 return 0;
1676}
1677
45c0a188 1678static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
01d7584c
LG		 1679{
1680 struct snd_soc_pcm_runtime *fe = substream->private_data;
1681 int err, stream = substream->stream;
1682
1683 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 1684 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 1685
103d84a3 1686 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
01d7584c
LG		 1687
1688 /* call hw_free on the frontend */
1689 err = soc_pcm_hw_free(substream);
1690 if (err < 0)
103d84a3 1691 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
01d7584c
LG		 1692 fe->dai_link->name);
1693
1694 /* only hw_params backends that are either sinks or sources
1695 * to this frontend DAI */
1696 err = dpcm_be_dai_hw_free(fe, stream);
1697
1698 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
ea9d0d77 1699 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1700
1701 mutex_unlock(&fe->card->mutex);
1702 return 0;
1703}
1704
23607025 1705int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1706{
1707 struct snd_soc_dpcm *dpcm;
1708 int ret;
1709
1710 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1711
1712 struct snd_soc_pcm_runtime *be = dpcm->be;
1713 struct snd_pcm_substream *be_substream =
1714 snd_soc_dpcm_get_substream(be, stream);
1715
1716 /* is this op for this BE ? */
1717 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1718 continue;
1719
1720 /* only allow hw_params() if no connected FEs are running */
1721 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
1722 continue;
1723
1724 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
1725 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1726 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
1727 continue;
1728
103d84a3 1729 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
01d7584c
LG		 1730 dpcm->fe->dai_link->name);
1731
1732 /* copy params for each dpcm */
1733 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
1734 sizeof(struct snd_pcm_hw_params));
1735
1736 /* perform any hw_params fixups */
1737 if (be->dai_link->be_hw_params_fixup) {
1738 ret = be->dai_link->be_hw_params_fixup(be,
1739 &dpcm->hw_params);
1740 if (ret < 0) {
1741 dev_err(be->dev,
103d84a3 1742 "ASoC: hw_params BE fixup failed %d\n",
01d7584c
LG		 1743 ret);
1744 goto unwind;
1745 }
1746 }
1747
1748 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
1749 if (ret < 0) {
1750 dev_err(dpcm->be->dev,
103d84a3 1751 "ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 1752 goto unwind;
1753 }
1754
1755 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
1756 }
1757 return 0;
1758
1759unwind:
1760 /* disable any enabled and non active backends */
1761 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1762 struct snd_soc_pcm_runtime *be = dpcm->be;
1763 struct snd_pcm_substream *be_substream =
1764 snd_soc_dpcm_get_substream(be, stream);
1765
1766 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1767 continue;
1768
1769 /* only allow hw_free() if no connected FEs are running */
1770 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1771 continue;
1772
1773 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
1774 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1775 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
1776 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1777 continue;
1778
1779 soc_pcm_hw_free(be_substream);
1780 }
1781
1782 return ret;
1783}
1784
45c0a188
MB		 1785static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
1786 struct snd_pcm_hw_params *params)
01d7584c
LG		 1787{
1788 struct snd_soc_pcm_runtime *fe = substream->private_data;
1789 int ret, stream = substream->stream;
1790
1791 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 1792 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1793
1794 memcpy(&fe->dpcm[substream->stream].hw_params, params,
1795 sizeof(struct snd_pcm_hw_params));
1796 ret = dpcm_be_dai_hw_params(fe, substream->stream);
1797 if (ret < 0) {
103d84a3 1798 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 1799 goto out;
1800 }
1801
103d84a3 1802 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
01d7584c
LG		 1803 fe->dai_link->name, params_rate(params),
1804 params_channels(params), params_format(params));
1805
1806 /* call hw_params on the frontend */
1807 ret = soc_pcm_hw_params(substream, params);
1808 if (ret < 0) {
103d84a3 1809 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
01d7584c
LG		 1810 dpcm_be_dai_hw_free(fe, stream);
1811 } else
1812 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
1813
1814out:
ea9d0d77 1815 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1816 mutex_unlock(&fe->card->mutex);
1817 return ret;
1818}
1819
1820static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
1821 struct snd_pcm_substream *substream, int cmd)
1822{
1823 int ret;
1824
103d84a3 1825 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
01d7584c
LG		 1826 dpcm->fe->dai_link->name, cmd);
1827
1828 ret = soc_pcm_trigger(substream, cmd);
1829 if (ret < 0)
103d84a3 1830 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
01d7584c
LG		 1831
1832 return ret;
1833}
1834
23607025 1835int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
45c0a188 1836 int cmd)
01d7584c
LG		 1837{
1838 struct snd_soc_dpcm *dpcm;
1839 int ret = 0;
1840
1841 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1842
1843 struct snd_soc_pcm_runtime *be = dpcm->be;
1844 struct snd_pcm_substream *be_substream =
1845 snd_soc_dpcm_get_substream(be, stream);
1846
1847 /* is this op for this BE ? */
1848 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1849 continue;
1850
1851 switch (cmd) {
1852 case SNDRV_PCM_TRIGGER_START:
1853 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
1854 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1855 continue;
1856
1857 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1858 if (ret)
1859 return ret;
1860
1861 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1862 break;
1863 case SNDRV_PCM_TRIGGER_RESUME:
1864 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
1865 continue;
1866
1867 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1868 if (ret)
1869 return ret;
1870
1871 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1872 break;
1873 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1874 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
1875 continue;
1876
1877 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1878 if (ret)
1879 return ret;
1880
1881 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1882 break;
1883 case SNDRV_PCM_TRIGGER_STOP:
1884 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
1885 continue;
1886
1887 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1888 continue;
1889
1890 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1891 if (ret)
1892 return ret;
1893
1894 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
1895 break;
1896 case SNDRV_PCM_TRIGGER_SUSPEND:
868a6ca8 1897 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
01d7584c
LG		 1898 continue;
1899
1900 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1901 continue;
1902
1903 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1904 if (ret)
1905 return ret;
1906
1907 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
1908 break;
1909 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1910 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
1911 continue;
1912
1913 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1914 continue;
1915
1916 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1917 if (ret)
1918 return ret;
1919
1920 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
1921 break;
1922 }
1923 }
1924
1925 return ret;
1926}
1927EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
1928
ea9d0d77 1929static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
01d7584c
LG		 1930{
1931 struct snd_soc_pcm_runtime *fe = substream->private_data;
1932 int stream = substream->stream, ret;
1933 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
1934
1935 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
1936
1937 switch (trigger) {
1938 case SND_SOC_DPCM_TRIGGER_PRE:
1939 /* call trigger on the frontend before the backend. */
1940
103d84a3 1941 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
01d7584c
LG		 1942 fe->dai_link->name, cmd);
1943
1944 ret = soc_pcm_trigger(substream, cmd);
1945 if (ret < 0) {
103d84a3 1946 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
01d7584c
LG		 1947 goto out;
1948 }
1949
1950 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
1951 break;
1952 case SND_SOC_DPCM_TRIGGER_POST:
1953 /* call trigger on the frontend after the backend. */
1954
1955 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
1956 if (ret < 0) {
103d84a3 1957 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
01d7584c
LG		 1958 goto out;
1959 }
1960
103d84a3 1961 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
01d7584c
LG		 1962 fe->dai_link->name, cmd);
1963
1964 ret = soc_pcm_trigger(substream, cmd);
1965 break;
07bf84aa
LG		 1966 case SND_SOC_DPCM_TRIGGER_BESPOKE:
1967 /* bespoke trigger() - handles both FE and BEs */
1968
103d84a3 1969 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
07bf84aa
LG		 1970 fe->dai_link->name, cmd);
1971
1972 ret = soc_pcm_bespoke_trigger(substream, cmd);
1973 if (ret < 0) {
103d84a3 1974 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
07bf84aa
LG		 1975 goto out;
1976 }
1977 break;
01d7584c 1978 default:
103d84a3 1979 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
01d7584c
LG		 1980 fe->dai_link->name);
1981 ret = -EINVAL;
1982 goto out;
1983 }
1984
1985 switch (cmd) {
1986 case SNDRV_PCM_TRIGGER_START:
1987 case SNDRV_PCM_TRIGGER_RESUME:
1988 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1989 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1990 break;
1991 case SNDRV_PCM_TRIGGER_STOP:
1992 case SNDRV_PCM_TRIGGER_SUSPEND:
1993 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1994 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
1995 break;
1996 }
1997
1998out:
1999 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2000 return ret;
2001}
2002
ea9d0d77
TI		 2003static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2004{
2005 struct snd_soc_pcm_runtime *fe = substream->private_data;
2006 int stream = substream->stream;
2007
2008 /* if FE's runtime_update is already set, we're in race;
2009 * process this trigger later at exit
2010 */
2011 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2012 fe->dpcm[stream].trigger_pending = cmd + 1;
2013 return 0; /* delayed, assuming it's successful */
2014 }
2015
2016 /* we're alone, let's trigger */
2017 return dpcm_fe_dai_do_trigger(substream, cmd);
2018}
2019
23607025 2020int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2021{
2022 struct snd_soc_dpcm *dpcm;
2023 int ret = 0;
2024
2025 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2026
2027 struct snd_soc_pcm_runtime *be = dpcm->be;
2028 struct snd_pcm_substream *be_substream =
2029 snd_soc_dpcm_get_substream(be, stream);
2030
2031 /* is this op for this BE ? */
2032 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2033 continue;
2034
2035 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2036 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2037 continue;
2038
103d84a3 2039 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
01d7584c
LG		 2040 dpcm->fe->dai_link->name);
2041
2042 ret = soc_pcm_prepare(be_substream);
2043 if (ret < 0) {
103d84a3 2044 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
01d7584c
LG		 2045 ret);
2046 break;
2047 }
2048
2049 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2050 }
2051 return ret;
2052}
2053
45c0a188 2054static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
01d7584c
LG		 2055{
2056 struct snd_soc_pcm_runtime *fe = substream->private_data;
2057 int stream = substream->stream, ret = 0;
2058
2059 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2060
103d84a3 2061 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
01d7584c 2062
ea9d0d77 2063 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2064
2065 /* there is no point preparing this FE if there are no BEs */
2066 if (list_empty(&fe->dpcm[stream].be_clients)) {
103d84a3 2067 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
01d7584c
LG		 2068 fe->dai_link->name);
2069 ret = -EINVAL;
2070 goto out;
2071 }
2072
2073 ret = dpcm_be_dai_prepare(fe, substream->stream);
2074 if (ret < 0)
2075 goto out;
2076
2077 /* call prepare on the frontend */
2078 ret = soc_pcm_prepare(substream);
2079 if (ret < 0) {
103d84a3 2080 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
01d7584c
LG		 2081 fe->dai_link->name);
2082 goto out;
2083 }
2084
2085 /* run the stream event for each BE */
2086 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2087 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2088
2089out:
ea9d0d77 2090 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2091 mutex_unlock(&fe->card->mutex);
2092
2093 return ret;
2094}
2095
be3f3f2c
LG		 2096static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
2097 unsigned int cmd, void *arg)
2098{
2099 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2100 struct snd_soc_platform *platform = rtd->platform;
2101
c5914b0a 2102 if (platform->driver->ops && platform->driver->ops->ioctl)
be3f3f2c
LG		 2103 return platform->driver->ops->ioctl(substream, cmd, arg);
2104 return snd_pcm_lib_ioctl(substream, cmd, arg);
2105}
2106
618dae11
LG		 2107static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2108{
07bf84aa
LG		 2109 struct snd_pcm_substream *substream =
2110 snd_soc_dpcm_get_substream(fe, stream);
2111 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2112 int err;
2113
103d84a3 2114 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
618dae11
LG		 2115 stream ? "capture" : "playback", fe->dai_link->name);
2116
07bf84aa
LG		 2117 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2118 /* call bespoke trigger - FE takes care of all BE triggers */
103d84a3 2119 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
07bf84aa
LG		 2120 fe->dai_link->name);
2121
2122 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2123 if (err < 0)
103d84a3 2124 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2125 } else {
103d84a3 2126 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
07bf84aa
LG		 2127 fe->dai_link->name);
2128
2129 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2130 if (err < 0)
103d84a3 2131 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2132 }
618dae11
LG		 2133
2134 err = dpcm_be_dai_hw_free(fe, stream);
2135 if (err < 0)
103d84a3 2136 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
618dae11
LG		 2137
2138 err = dpcm_be_dai_shutdown(fe, stream);
2139 if (err < 0)
103d84a3 2140 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
618dae11
LG		 2141
2142 /* run the stream event for each BE */
2143 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2144
2145 return 0;
2146}
2147
2148static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2149{
07bf84aa
LG		 2150 struct snd_pcm_substream *substream =
2151 snd_soc_dpcm_get_substream(fe, stream);
618dae11 2152 struct snd_soc_dpcm *dpcm;
07bf84aa 2153 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2154 int ret;
2155
103d84a3 2156 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
618dae11
LG		 2157 stream ? "capture" : "playback", fe->dai_link->name);
2158
2159 /* Only start the BE if the FE is ready */
2160 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2161 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2162 return -EINVAL;
2163
2164 /* startup must always be called for new BEs */
2165 ret = dpcm_be_dai_startup(fe, stream);
fffc0ca2 2166 if (ret < 0)
618dae11 2167 goto disconnect;
618dae11
LG		 2168
2169 /* keep going if FE state is > open */
2170 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2171 return 0;
01d7584c 2172
618dae11 2173 ret = dpcm_be_dai_hw_params(fe, stream);
fffc0ca2 2174 if (ret < 0)
618dae11 2175 goto close;
618dae11
LG		 2176
2177 /* keep going if FE state is > hw_params */
2178 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2179 return 0;
2180
2181
2182 ret = dpcm_be_dai_prepare(fe, stream);
fffc0ca2 2183 if (ret < 0)
618dae11 2184 goto hw_free;
618dae11
LG		 2185
2186 /* run the stream event for each BE */
2187 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2188
2189 /* keep going if FE state is > prepare */
2190 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2191 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2192 return 0;
2193
07bf84aa
LG		 2194 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2195 /* call trigger on the frontend - FE takes care of all BE triggers */
103d84a3 2196 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
07bf84aa 2197 fe->dai_link->name);
618dae11 2198
07bf84aa
LG		 2199 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2200 if (ret < 0) {
103d84a3 2201 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
07bf84aa
LG		 2202 goto hw_free;
2203 }
2204 } else {
103d84a3 2205 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
07bf84aa
LG		 2206 fe->dai_link->name);
2207
2208 ret = dpcm_be_dai_trigger(fe, stream,
2209 SNDRV_PCM_TRIGGER_START);
2210 if (ret < 0) {
103d84a3 2211 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
07bf84aa
LG		 2212 goto hw_free;
2213 }
618dae11
LG		 2214 }
2215
2216 return 0;
2217
2218hw_free:
2219 dpcm_be_dai_hw_free(fe, stream);
2220close:
2221 dpcm_be_dai_shutdown(fe, stream);
2222disconnect:
2223 /* disconnect any non started BEs */
2224 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2225 struct snd_soc_pcm_runtime *be = dpcm->be;
2226 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2227 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2228 }
2229
2230 return ret;
2231}
2232
2233static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2234{
2235 int ret;
2236
ea9d0d77 2237 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2238 ret = dpcm_run_update_startup(fe, stream);
2239 if (ret < 0)
103d84a3 2240 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
ea9d0d77 2241 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2242
2243 return ret;
2244}
2245
2246static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2247{
2248 int ret;
2249
ea9d0d77 2250 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2251 ret = dpcm_run_update_shutdown(fe, stream);
2252 if (ret < 0)
103d84a3 2253 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
ea9d0d77 2254 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2255
2256 return ret;
2257}
2258
2259/* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2260 * any DAI links.
2261 */
c3f48ae6 2262int soc_dpcm_runtime_update(struct snd_soc_card *card)
618dae11 2263{
618dae11
LG		 2264 int i, old, new, paths;
2265
618dae11
LG		 2266 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2267 for (i = 0; i < card->num_rtd; i++) {
2268 struct snd_soc_dapm_widget_list *list;
2269 struct snd_soc_pcm_runtime *fe = &card->rtd[i];
2270
2271 /* make sure link is FE */
2272 if (!fe->dai_link->dynamic)
2273 continue;
2274
2275 /* only check active links */
2276 if (!fe->cpu_dai->active)
2277 continue;
2278
2279 /* DAPM sync will call this to update DSP paths */
103d84a3 2280 dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n",
618dae11
LG		 2281 fe->dai_link->name);
2282
2283 /* skip if FE doesn't have playback capability */
075207d2
QZ		 2284 if (!fe->cpu_dai->driver->playback.channels_min
2285 || !fe->codec_dai->driver->playback.channels_min)
2286 goto capture;
2287
2288 /* skip if FE isn't currently playing */
2289 if (!fe->cpu_dai->playback_active
2290 || !fe->codec_dai->playback_active)
618dae11
LG		 2291 goto capture;
2292
2293 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2294 if (paths < 0) {
103d84a3 2295 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
618dae11
LG		 2296 fe->dai_link->name, "playback");
2297 mutex_unlock(&card->mutex);
2298 return paths;
2299 }
2300
2301 /* update any new playback paths */
2302 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1);
2303 if (new) {
2304 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2305 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2306 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2307 }
2308
2309 /* update any old playback paths */
2310 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0);
2311 if (old) {
2312 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2313 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2314 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2315 }
2316
7ed9de76 2317 dpcm_path_put(&list);
618dae11
LG		 2318capture:
2319 /* skip if FE doesn't have capture capability */
075207d2
QZ		 2320 if (!fe->cpu_dai->driver->capture.channels_min
2321 || !fe->codec_dai->driver->capture.channels_min)
2322 continue;
2323
2324 /* skip if FE isn't currently capturing */
2325 if (!fe->cpu_dai->capture_active
2326 || !fe->codec_dai->capture_active)
618dae11
LG		 2327 continue;
2328
2329 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2330 if (paths < 0) {
103d84a3 2331 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
618dae11
LG		 2332 fe->dai_link->name, "capture");
2333 mutex_unlock(&card->mutex);
2334 return paths;
2335 }
2336
2337 /* update any new capture paths */
2338 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1);
2339 if (new) {
2340 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2341 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2342 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2343 }
2344
2345 /* update any old capture paths */
2346 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0);
2347 if (old) {
2348 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2349 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2350 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2351 }
2352
2353 dpcm_path_put(&list);
2354 }
2355
2356 mutex_unlock(&card->mutex);
2357 return 0;
2358}
01d7584c
LG		 2359int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2360{
2361 struct snd_soc_dpcm *dpcm;
2362 struct list_head *clients =
2363 &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients;
2364
2365 list_for_each_entry(dpcm, clients, list_be) {
2366
2367 struct snd_soc_pcm_runtime *be = dpcm->be;
2e5894d7 2368 int i;
01d7584c
LG		 2369
2370 if (be->dai_link->ignore_suspend)
2371 continue;
2372
2e5894d7
BC		 2373 for (i = 0; i < be->num_codecs; i++) {
2374 struct snd_soc_dai *dai = be->codec_dais[i];
2375 struct snd_soc_dai_driver *drv = dai->driver;
2376
2377 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2378 be->dai_link->name);
01d7584c 2379
2e5894d7
BC		 2380 if (drv->ops && drv->ops->digital_mute &&
2381 dai->playback_active)
2382 drv->ops->digital_mute(dai, mute);
2383 }
01d7584c
LG		 2384 }
2385
2386 return 0;
2387}
2388
45c0a188 2389static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2390{
2391 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2392 struct snd_soc_dpcm *dpcm;
2393 struct snd_soc_dapm_widget_list *list;
2394 int ret;
2395 int stream = fe_substream->stream;
2396
2397 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2398 fe->dpcm[stream].runtime = fe_substream->runtime;
2399
8f70e515
QZ		 2400 ret = dpcm_path_get(fe, stream, &list);
2401 if (ret < 0) {
2402 mutex_unlock(&fe->card->mutex);
2403 return ret;
2404 } else if (ret == 0) {
103d84a3 2405 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
01d7584c 2406 fe->dai_link->name, stream ? "capture" : "playback");
01d7584c
LG		 2407 }
2408
2409 /* calculate valid and active FE <-> BE dpcms */
2410 dpcm_process_paths(fe, stream, &list, 1);
2411
2412 ret = dpcm_fe_dai_startup(fe_substream);
2413 if (ret < 0) {
2414 /* clean up all links */
2415 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2416 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2417
2418 dpcm_be_disconnect(fe, stream);
2419 fe->dpcm[stream].runtime = NULL;
2420 }
2421
2422 dpcm_clear_pending_state(fe, stream);
2423 dpcm_path_put(&list);
2424 mutex_unlock(&fe->card->mutex);
2425 return ret;
2426}
2427
45c0a188 2428static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2429{
2430 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2431 struct snd_soc_dpcm *dpcm;
2432 int stream = fe_substream->stream, ret;
2433
2434 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2435 ret = dpcm_fe_dai_shutdown(fe_substream);
2436
2437 /* mark FE's links ready to prune */
2438 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2439 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2440
2441 dpcm_be_disconnect(fe, stream);
2442
2443 fe->dpcm[stream].runtime = NULL;
2444 mutex_unlock(&fe->card->mutex);
2445 return ret;
2446}
2447
ddee627c
LG		 2448/* create a new pcm */
2449int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2450{
ddee627c 2451 struct snd_soc_platform *platform = rtd->platform;
2e5894d7 2452 struct snd_soc_dai *codec_dai;
ddee627c
LG		 2453 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2454 struct snd_pcm *pcm;
2455 char new_name[64];
2456 int ret = 0, playback = 0, capture = 0;
2e5894d7 2457 int i;
ddee627c 2458
01d7584c 2459 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
1e9de42f
LG		 2460 playback = rtd->dai_link->dpcm_playback;
2461 capture = rtd->dai_link->dpcm_capture;
01d7584c 2462 } else {
2e5894d7
BC		 2463 for (i = 0; i < rtd->num_codecs; i++) {
2464 codec_dai = rtd->codec_dais[i];
2465 if (codec_dai->driver->playback.channels_min)
2466 playback = 1;
2467 if (codec_dai->driver->capture.channels_min)
2468 capture = 1;
2469 }
2470
2471 capture = capture && cpu_dai->driver->capture.channels_min;
2472 playback = playback && cpu_dai->driver->playback.channels_min;
01d7584c
LG		 2473 }
2474
d6bead02
FE		 2475 if (rtd->dai_link->playback_only) {
2476 playback = 1;
2477 capture = 0;
2478 }
2479
2480 if (rtd->dai_link->capture_only) {
2481 playback = 0;
2482 capture = 1;
2483 }
2484
01d7584c
LG		 2485 /* create the PCM */
2486 if (rtd->dai_link->no_pcm) {
2487 snprintf(new_name, sizeof(new_name), "(%s)",
2488 rtd->dai_link->stream_name);
2489
2490 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2491 playback, capture, &pcm);
2492 } else {
2493 if (rtd->dai_link->dynamic)
2494 snprintf(new_name, sizeof(new_name), "%s (*)",
2495 rtd->dai_link->stream_name);
2496 else
2497 snprintf(new_name, sizeof(new_name), "%s %s-%d",
2e5894d7
BC		 2498 rtd->dai_link->stream_name,
2499 (rtd->num_codecs > 1) ?
2500 "multicodec" : rtd->codec_dai->name, num);
01d7584c
LG		 2501
2502 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
2503 capture, &pcm);
2504 }
ddee627c 2505 if (ret < 0) {
103d84a3 2506 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
5cb9b748 2507 rtd->dai_link->name);
ddee627c
LG		 2508 return ret;
2509 }
103d84a3 2510 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
ddee627c
LG		 2511
2512 /* DAPM dai link stream work */
2513 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
2514
48c7699f 2515 pcm->nonatomic = rtd->dai_link->nonatomic;
ddee627c
LG		 2516 rtd->pcm = pcm;
2517 pcm->private_data = rtd;
01d7584c
LG		 2518
2519 if (rtd->dai_link->no_pcm) {
2520 if (playback)
2521 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
2522 if (capture)
2523 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2524 goto out;
2525 }
2526
2527 /* ASoC PCM operations */
2528 if (rtd->dai_link->dynamic) {
2529 rtd->ops.open = dpcm_fe_dai_open;
2530 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
2531 rtd->ops.prepare = dpcm_fe_dai_prepare;
2532 rtd->ops.trigger = dpcm_fe_dai_trigger;
2533 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
2534 rtd->ops.close = dpcm_fe_dai_close;
2535 rtd->ops.pointer = soc_pcm_pointer;
be3f3f2c 2536 rtd->ops.ioctl = soc_pcm_ioctl;
01d7584c
LG		 2537 } else {
2538 rtd->ops.open = soc_pcm_open;
2539 rtd->ops.hw_params = soc_pcm_hw_params;
2540 rtd->ops.prepare = soc_pcm_prepare;
2541 rtd->ops.trigger = soc_pcm_trigger;
2542 rtd->ops.hw_free = soc_pcm_hw_free;
2543 rtd->ops.close = soc_pcm_close;
2544 rtd->ops.pointer = soc_pcm_pointer;
be3f3f2c 2545 rtd->ops.ioctl = soc_pcm_ioctl;
01d7584c
LG		 2546 }
2547
ddee627c 2548 if (platform->driver->ops) {
01d7584c
LG		 2549 rtd->ops.ack = platform->driver->ops->ack;
2550 rtd->ops.copy = platform->driver->ops->copy;
2551 rtd->ops.silence = platform->driver->ops->silence;
2552 rtd->ops.page = platform->driver->ops->page;
2553 rtd->ops.mmap = platform->driver->ops->mmap;
ddee627c
LG		 2554 }
2555
2556 if (playback)
01d7584c 2557 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
ddee627c
LG		 2558
2559 if (capture)
01d7584c 2560 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
ddee627c
LG		 2561
2562 if (platform->driver->pcm_new) {
2563 ret = platform->driver->pcm_new(rtd);
2564 if (ret < 0) {
b1bc7b3c
MB		 2565 dev_err(platform->dev,
2566 "ASoC: pcm constructor failed: %d\n",
2567 ret);
ddee627c
LG		 2568 return ret;
2569 }
2570 }
2571
2572 pcm->private_free = platform->driver->pcm_free;
01d7584c 2573out:
2e5894d7
BC		 2574 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
2575 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
2576 cpu_dai->name);
ddee627c
LG		 2577 return ret;
2578}
01d7584c
LG		 2579
2580/* is the current PCM operation for this FE ? */
2581int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
2582{
2583 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
2584 return 1;
2585 return 0;
2586}
2587EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
2588
2589/* is the current PCM operation for this BE ? */
2590int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
2591 struct snd_soc_pcm_runtime *be, int stream)
2592{
2593 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
2594 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
2595 be->dpcm[stream].runtime_update))
2596 return 1;
2597 return 0;
2598}
2599EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
2600
2601/* get the substream for this BE */
2602struct snd_pcm_substream *
2603 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
2604{
2605 return be->pcm->streams[stream].substream;
2606}
2607EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
2608
2609/* get the BE runtime state */
2610enum snd_soc_dpcm_state
2611 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
2612{
2613 return be->dpcm[stream].state;
2614}
2615EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
2616
2617/* set the BE runtime state */
2618void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
2619 int stream, enum snd_soc_dpcm_state state)
2620{
2621 be->dpcm[stream].state = state;
2622}
2623EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
2624
2625/*
2626 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
2627 * are not running, paused or suspended for the specified stream direction.
2628 */
2629int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
2630 struct snd_soc_pcm_runtime *be, int stream)
2631{
2632 struct snd_soc_dpcm *dpcm;
2633 int state;
2634
2635 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
2636
2637 if (dpcm->fe == fe)
2638 continue;
2639
2640 state = dpcm->fe->dpcm[stream].state;
2641 if (state == SND_SOC_DPCM_STATE_START ||
2642 state == SND_SOC_DPCM_STATE_PAUSED ||
2643 state == SND_SOC_DPCM_STATE_SUSPEND)
2644 return 0;
2645 }
2646
2647 /* it's safe to free/stop this BE DAI */
2648 return 1;
2649}
2650EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
2651
2652/*
2653 * We can only change hw params a BE DAI if any of it's FE are not prepared,
2654 * running, paused or suspended for the specified stream direction.
2655 */
2656int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
2657 struct snd_soc_pcm_runtime *be, int stream)
2658{
2659 struct snd_soc_dpcm *dpcm;
2660 int state;
2661
2662 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
2663
2664 if (dpcm->fe == fe)
2665 continue;
2666
2667 state = dpcm->fe->dpcm[stream].state;
2668 if (state == SND_SOC_DPCM_STATE_START ||
2669 state == SND_SOC_DPCM_STATE_PAUSED ||
2670 state == SND_SOC_DPCM_STATE_SUSPEND ||
2671 state == SND_SOC_DPCM_STATE_PREPARE)
2672 return 0;
2673 }
2674
2675 /* it's safe to change hw_params */
2676 return 1;
2677}
2678EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
f86dcef8 2679
07bf84aa
LG		 2680int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
2681 int cmd, struct snd_soc_platform *platform)
2682{
c5914b0a 2683 if (platform->driver->ops && platform->driver->ops->trigger)
07bf84aa
LG		 2684 return platform->driver->ops->trigger(substream, cmd);
2685 return 0;
2686}
2687EXPORT_SYMBOL_GPL(snd_soc_platform_trigger);
2688
f86dcef8
LG		 2689#ifdef CONFIG_DEBUG_FS
2690static char *dpcm_state_string(enum snd_soc_dpcm_state state)
2691{
2692 switch (state) {
2693 case SND_SOC_DPCM_STATE_NEW:
2694 return "new";
2695 case SND_SOC_DPCM_STATE_OPEN:
2696 return "open";
2697 case SND_SOC_DPCM_STATE_HW_PARAMS:
2698 return "hw_params";
2699 case SND_SOC_DPCM_STATE_PREPARE:
2700 return "prepare";
2701 case SND_SOC_DPCM_STATE_START:
2702 return "start";
2703 case SND_SOC_DPCM_STATE_STOP:
2704 return "stop";
2705 case SND_SOC_DPCM_STATE_SUSPEND:
2706 return "suspend";
2707 case SND_SOC_DPCM_STATE_PAUSED:
2708 return "paused";
2709 case SND_SOC_DPCM_STATE_HW_FREE:
2710 return "hw_free";
2711 case SND_SOC_DPCM_STATE_CLOSE:
2712 return "close";
2713 }
2714
2715 return "unknown";
2716}
2717
f86dcef8
LG		 2718static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
2719 int stream, char *buf, size_t size)
2720{
2721 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
2722 struct snd_soc_dpcm *dpcm;
2723 ssize_t offset = 0;
2724
2725 /* FE state */
2726 offset += snprintf(buf + offset, size - offset,
2727 "[%s - %s]\n", fe->dai_link->name,
2728 stream ? "Capture" : "Playback");
2729
2730 offset += snprintf(buf + offset, size - offset, "State: %s\n",
2731 dpcm_state_string(fe->dpcm[stream].state));
2732
2733 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
2734 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
2735 offset += snprintf(buf + offset, size - offset,
2736 "Hardware Params: "
2737 "Format = %s, Channels = %d, Rate = %d\n",
2738 snd_pcm_format_name(params_format(params)),
2739 params_channels(params),
2740 params_rate(params));
2741
2742 /* BEs state */
2743 offset += snprintf(buf + offset, size - offset, "Backends:\n");
2744
2745 if (list_empty(&fe->dpcm[stream].be_clients)) {
2746 offset += snprintf(buf + offset, size - offset,
2747 " No active DSP links\n");
2748 goto out;
2749 }
2750
2751 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2752 struct snd_soc_pcm_runtime *be = dpcm->be;
2753 params = &dpcm->hw_params;
2754
2755 offset += snprintf(buf + offset, size - offset,
2756 "- %s\n", be->dai_link->name);
2757
2758 offset += snprintf(buf + offset, size - offset,
2759 " State: %s\n",
2760 dpcm_state_string(be->dpcm[stream].state));
2761
2762 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
2763 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
2764 offset += snprintf(buf + offset, size - offset,
2765 " Hardware Params: "
2766 "Format = %s, Channels = %d, Rate = %d\n",
2767 snd_pcm_format_name(params_format(params)),
2768 params_channels(params),
2769 params_rate(params));
2770 }
2771
2772out:
2773 return offset;
2774}
2775
2776static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
2777 size_t count, loff_t *ppos)
2778{
2779 struct snd_soc_pcm_runtime *fe = file->private_data;
2780 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
2781 char *buf;
2782
2783 buf = kmalloc(out_count, GFP_KERNEL);
2784 if (!buf)
2785 return -ENOMEM;
2786
2787 if (fe->cpu_dai->driver->playback.channels_min)
2788 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
2789 buf + offset, out_count - offset);
2790
2791 if (fe->cpu_dai->driver->capture.channels_min)
2792 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
2793 buf + offset, out_count - offset);
2794
f57b8488 2795 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
f86dcef8 2796
f57b8488
LG		 2797 kfree(buf);
2798 return ret;
f86dcef8
LG		 2799}
2800
2801static const struct file_operations dpcm_state_fops = {
f57b8488 2802 .open = simple_open,
f86dcef8
LG		 2803 .read = dpcm_state_read_file,
2804 .llseek = default_llseek,
2805};
2806
2e55b90a 2807void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
f86dcef8 2808{
b3bba9a1 2809 if (!rtd->dai_link)
2e55b90a 2810 return;
b3bba9a1 2811
6553bf06
LPC		 2812 if (!rtd->card->debugfs_card_root)
2813 return;
b3bba9a1 2814
f86dcef8
LG		 2815 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
2816 rtd->card->debugfs_card_root);
2817 if (!rtd->debugfs_dpcm_root) {
2818 dev_dbg(rtd->dev,
2819 "ASoC: Failed to create dpcm debugfs directory %s\n",
2820 rtd->dai_link->name);
2e55b90a 2821 return;
f86dcef8
LG		 2822 }
2823
f57b8488 2824 rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444,
f86dcef8
LG		 2825 rtd->debugfs_dpcm_root,
2826 rtd, &dpcm_state_fops);
f86dcef8
LG		 2827}
2828#endif
Linux kernel - Deliverables
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