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ASoC: Make soc_dpcm_debugfs_add() non-fatal
[linux-2.6-block.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
LG		 1099#ifdef CONFIG_DEBUG_FS
1100 dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
1101 fe->debugfs_dpcm_root, &dpcm->state);
1102#endif
01d7584c
LG		 1103 return 1;
1104}
1105
1106/* reparent a BE onto another FE */
1107static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1108 struct snd_soc_pcm_runtime *be, int stream)
1109{
1110 struct snd_soc_dpcm *dpcm;
1111 struct snd_pcm_substream *fe_substream, *be_substream;
1112
1113 /* reparent if BE is connected to other FEs */
1114 if (!be->dpcm[stream].users)
1115 return;
1116
1117 be_substream = snd_soc_dpcm_get_substream(be, stream);
1118
1119 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
1120 if (dpcm->fe == fe)
1121 continue;
1122
7cc302d2 1123 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
01d7584c
LG		 1124 stream ? "capture" : "playback",
1125 dpcm->fe->dai_link->name,
1126 stream ? "<-" : "->", dpcm->be->dai_link->name);
1127
1128 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1129 be_substream->runtime = fe_substream->runtime;
1130 break;
1131 }
1132}
1133
1134/* disconnect a BE and FE */
23607025 1135void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1136{
1137 struct snd_soc_dpcm *dpcm, *d;
1138
1139 list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) {
103d84a3 1140 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
01d7584c
LG		 1141 stream ? "capture" : "playback",
1142 dpcm->be->dai_link->name);
1143
1144 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1145 continue;
1146
7cc302d2 1147 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
01d7584c
LG		 1148 stream ? "capture" : "playback", fe->dai_link->name,
1149 stream ? "<-" : "->", dpcm->be->dai_link->name);
1150
1151 /* BEs still alive need new FE */
1152 dpcm_be_reparent(fe, dpcm->be, stream);
1153
f86dcef8
LG		 1154#ifdef CONFIG_DEBUG_FS
1155 debugfs_remove(dpcm->debugfs_state);
1156#endif
01d7584c
LG		 1157 list_del(&dpcm->list_be);
1158 list_del(&dpcm->list_fe);
1159 kfree(dpcm);
1160 }
1161}
1162
1163/* get BE for DAI widget and stream */
1164static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1165 struct snd_soc_dapm_widget *widget, int stream)
1166{
1167 struct snd_soc_pcm_runtime *be;
2e5894d7 1168 int i, j;
01d7584c
LG		 1169
1170 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1171 for (i = 0; i < card->num_links; i++) {
1172 be = &card->rtd[i];
1173
35ea0655
LG		 1174 if (!be->dai_link->no_pcm)
1175 continue;
1176
2e5894d7 1177 if (be->cpu_dai->playback_widget == widget)
01d7584c 1178 return be;
2e5894d7
BC		 1179
1180 for (j = 0; j < be->num_codecs; j++) {
1181 struct snd_soc_dai *dai = be->codec_dais[j];
1182 if (dai->playback_widget == widget)
1183 return be;
1184 }
01d7584c
LG		 1185 }
1186 } else {
1187
1188 for (i = 0; i < card->num_links; i++) {
1189 be = &card->rtd[i];
1190
35ea0655
LG		 1191 if (!be->dai_link->no_pcm)
1192 continue;
1193
2e5894d7 1194 if (be->cpu_dai->capture_widget == widget)
01d7584c 1195 return be;
2e5894d7
BC		 1196
1197 for (j = 0; j < be->num_codecs; j++) {
1198 struct snd_soc_dai *dai = be->codec_dais[j];
1199 if (dai->capture_widget == widget)
1200 return be;
1201 }
01d7584c
LG		 1202 }
1203 }
1204
103d84a3 1205 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
01d7584c
LG		 1206 stream ? "capture" : "playback", widget->name);
1207 return NULL;
1208}
1209
1210static inline struct snd_soc_dapm_widget *
37018610 1211 dai_get_widget(struct snd_soc_dai *dai, int stream)
01d7584c
LG		 1212{
1213 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
37018610 1214 return dai->playback_widget;
01d7584c 1215 else
37018610 1216 return dai->capture_widget;
01d7584c
LG		 1217}
1218
1219static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1220 struct snd_soc_dapm_widget *widget)
1221{
1222 int i;
1223
1224 for (i = 0; i < list->num_widgets; i++) {
1225 if (widget == list->widgets[i])
1226 return 1;
1227 }
1228
1229 return 0;
1230}
1231
23607025 1232int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1233 int stream, struct snd_soc_dapm_widget_list **list_)
1234{
1235 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
1236 struct snd_soc_dapm_widget_list *list;
1237 int paths;
1238
1239 list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) +
1240 sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL);
1241 if (list == NULL)
1242 return -ENOMEM;
1243
1244 /* get number of valid DAI paths and their widgets */
1245 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list);
1246
103d84a3 1247 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
01d7584c
LG		 1248 stream ? "capture" : "playback");
1249
1250 *list_ = list;
1251 return paths;
1252}
1253
01d7584c
LG		 1254static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1255 struct snd_soc_dapm_widget_list **list_)
1256{
1257 struct snd_soc_dpcm *dpcm;
1258 struct snd_soc_dapm_widget_list *list = *list_;
1259 struct snd_soc_dapm_widget *widget;
1260 int prune = 0;
1261
1262 /* Destroy any old FE <--> BE connections */
1263 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2e5894d7 1264 unsigned int i;
01d7584c
LG		 1265
1266 /* is there a valid CPU DAI widget for this BE */
37018610 1267 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
01d7584c
LG		 1268
1269 /* prune the BE if it's no longer in our active list */
1270 if (widget && widget_in_list(list, widget))
1271 continue;
1272
1273 /* is there a valid CODEC DAI widget for this BE */
2e5894d7
BC		 1274 for (i = 0; i < dpcm->be->num_codecs; i++) {
1275 struct snd_soc_dai *dai = dpcm->be->codec_dais[i];
1276 widget = dai_get_widget(dai, stream);
01d7584c 1277
2e5894d7
BC		 1278 /* prune the BE if it's no longer in our active list */
1279 if (widget && widget_in_list(list, widget))
1280 continue;
1281 }
01d7584c 1282
103d84a3 1283 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
01d7584c
LG		 1284 stream ? "capture" : "playback",
1285 dpcm->be->dai_link->name, fe->dai_link->name);
1286 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1287 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1288 prune++;
1289 }
1290
103d84a3 1291 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
01d7584c
LG		 1292 return prune;
1293}
1294
1295static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1296 struct snd_soc_dapm_widget_list **list_)
1297{
1298 struct snd_soc_card *card = fe->card;
1299 struct snd_soc_dapm_widget_list *list = *list_;
1300 struct snd_soc_pcm_runtime *be;
1301 int i, new = 0, err;
1302
1303 /* Create any new FE <--> BE connections */
1304 for (i = 0; i < list->num_widgets; i++) {
1305
4616274d
MB		 1306 switch (list->widgets[i]->id) {
1307 case snd_soc_dapm_dai_in:
1308 case snd_soc_dapm_dai_out:
1309 break;
1310 default:
01d7584c 1311 continue;
4616274d 1312 }
01d7584c
LG		 1313
1314 /* is there a valid BE rtd for this widget */
1315 be = dpcm_get_be(card, list->widgets[i], stream);
1316 if (!be) {
103d84a3 1317 dev_err(fe->dev, "ASoC: no BE found for %s\n",
01d7584c
LG		 1318 list->widgets[i]->name);
1319 continue;
1320 }
1321
1322 /* make sure BE is a real BE */
1323 if (!be->dai_link->no_pcm)
1324 continue;
1325
1326 /* don't connect if FE is not running */
23607025 1327 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
01d7584c
LG		 1328 continue;
1329
1330 /* newly connected FE and BE */
1331 err = dpcm_be_connect(fe, be, stream);
1332 if (err < 0) {
103d84a3 1333 dev_err(fe->dev, "ASoC: can't connect %s\n",
01d7584c
LG		 1334 list->widgets[i]->name);
1335 break;
1336 } else if (err == 0) /* already connected */
1337 continue;
1338
1339 /* new */
1340 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1341 new++;
1342 }
1343
103d84a3 1344 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
01d7584c
LG		 1345 return new;
1346}
1347
1348/*
1349 * Find the corresponding BE DAIs that source or sink audio to this
1350 * FE substream.
1351 */
23607025 1352int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1353 int stream, struct snd_soc_dapm_widget_list **list, int new)
1354{
1355 if (new)
1356 return dpcm_add_paths(fe, stream, list);
1357 else
1358 return dpcm_prune_paths(fe, stream, list);
1359}
1360
23607025 1361void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1362{
1363 struct snd_soc_dpcm *dpcm;
1364
1365 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
1366 dpcm->be->dpcm[stream].runtime_update =
1367 SND_SOC_DPCM_UPDATE_NO;
1368}
1369
1370static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1371 int stream)
1372{
1373 struct snd_soc_dpcm *dpcm;
1374
1375 /* disable any enabled and non active backends */
1376 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1377
1378 struct snd_soc_pcm_runtime *be = dpcm->be;
1379 struct snd_pcm_substream *be_substream =
1380 snd_soc_dpcm_get_substream(be, stream);
1381
1382 if (be->dpcm[stream].users == 0)
103d84a3 1383 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1384 stream ? "capture" : "playback",
1385 be->dpcm[stream].state);
1386
1387 if (--be->dpcm[stream].users != 0)
1388 continue;
1389
1390 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1391 continue;
1392
1393 soc_pcm_close(be_substream);
1394 be_substream->runtime = NULL;
1395 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1396 }
1397}
1398
23607025 1399int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1400{
1401 struct snd_soc_dpcm *dpcm;
1402 int err, count = 0;
1403
1404 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1405 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1406
1407 struct snd_soc_pcm_runtime *be = dpcm->be;
1408 struct snd_pcm_substream *be_substream =
1409 snd_soc_dpcm_get_substream(be, stream);
1410
2062b4c5
RKAL		 1411 if (!be_substream) {
1412 dev_err(be->dev, "ASoC: no backend %s stream\n",
1413 stream ? "capture" : "playback");
1414 continue;
1415 }
1416
01d7584c
LG		 1417 /* is this op for this BE ? */
1418 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1419 continue;
1420
1421 /* first time the dpcm is open ? */
1422 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
103d84a3 1423 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
01d7584c
LG		 1424 stream ? "capture" : "playback",
1425 be->dpcm[stream].state);
1426
1427 if (be->dpcm[stream].users++ != 0)
1428 continue;
1429
1430 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1431 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1432 continue;
1433
2062b4c5
RKAL		 1434 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1435 stream ? "capture" : "playback", be->dai_link->name);
01d7584c
LG		 1436
1437 be_substream->runtime = be->dpcm[stream].runtime;
1438 err = soc_pcm_open(be_substream);
1439 if (err < 0) {
103d84a3 1440 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
01d7584c
LG		 1441 be->dpcm[stream].users--;
1442 if (be->dpcm[stream].users < 0)
103d84a3 1443 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
01d7584c
LG		 1444 stream ? "capture" : "playback",
1445 be->dpcm[stream].state);
1446
1447 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1448 goto unwind;
1449 }
1450
1451 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1452 count++;
1453 }
1454
1455 return count;
1456
1457unwind:
1458 /* disable any enabled and non active backends */
1459 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1460 struct snd_soc_pcm_runtime *be = dpcm->be;
1461 struct snd_pcm_substream *be_substream =
1462 snd_soc_dpcm_get_substream(be, stream);
1463
1464 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1465 continue;
1466
1467 if (be->dpcm[stream].users == 0)
103d84a3 1468 dev_err(be->dev, "ASoC: no users %s at close %d\n",
01d7584c
LG		 1469 stream ? "capture" : "playback",
1470 be->dpcm[stream].state);
1471
1472 if (--be->dpcm[stream].users != 0)
1473 continue;
1474
1475 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1476 continue;
1477
1478 soc_pcm_close(be_substream);
1479 be_substream->runtime = NULL;
1480 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1481 }
1482
1483 return err;
1484}
1485
08ae9b45
LPC		 1486static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
1487 struct snd_soc_pcm_stream *stream)
1488{
1489 runtime->hw.rate_min = stream->rate_min;
1490 runtime->hw.rate_max = stream->rate_max;
1491 runtime->hw.channels_min = stream->channels_min;
1492 runtime->hw.channels_max = stream->channels_max;
002220a9
LPC		 1493 if (runtime->hw.formats)
1494 runtime->hw.formats &= stream->formats;
1495 else
1496 runtime->hw.formats = stream->formats;
08ae9b45
LPC		 1497 runtime->hw.rates = stream->rates;
1498}
1499
45c0a188 1500static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
01d7584c
LG		 1501{
1502 struct snd_pcm_runtime *runtime = substream->runtime;
1503 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1504 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1505 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1506
08ae9b45
LPC		 1507 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1508 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
1509 else
1510 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
01d7584c
LG		 1511}
1512
ea9d0d77
TI		 1513static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1514
1515/* Set FE's runtime_update state; the state is protected via PCM stream lock
1516 * for avoiding the race with trigger callback.
1517 * If the state is unset and a trigger is pending while the previous operation,
1518 * process the pending trigger action here.
1519 */
1520static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1521 int stream, enum snd_soc_dpcm_update state)
1522{
1523 struct snd_pcm_substream *substream =
1524 snd_soc_dpcm_get_substream(fe, stream);
1525
1526 snd_pcm_stream_lock_irq(substream);
1527 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1528 dpcm_fe_dai_do_trigger(substream,
1529 fe->dpcm[stream].trigger_pending - 1);
1530 fe->dpcm[stream].trigger_pending = 0;
1531 }
1532 fe->dpcm[stream].runtime_update = state;
1533 snd_pcm_stream_unlock_irq(substream);
1534}
1535
01d7584c
LG		 1536static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1537{
1538 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1539 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1540 int stream = fe_substream->stream, ret = 0;
1541
ea9d0d77 1542 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1543
1544 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1545 if (ret < 0) {
103d84a3 1546 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
01d7584c
LG		 1547 goto be_err;
1548 }
1549
103d84a3 1550 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
01d7584c
LG		 1551
1552 /* start the DAI frontend */
1553 ret = soc_pcm_open(fe_substream);
1554 if (ret < 0) {
103d84a3 1555 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
01d7584c
LG		 1556 goto unwind;
1557 }
1558
1559 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1560
1561 dpcm_set_fe_runtime(fe_substream);
1562 snd_pcm_limit_hw_rates(runtime);
1563
ea9d0d77 1564 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1565 return 0;
1566
1567unwind:
1568 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1569be_err:
ea9d0d77 1570 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1571 return ret;
1572}
1573
23607025 1574int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1575{
1576 struct snd_soc_dpcm *dpcm;
1577
1578 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1579 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1580
1581 struct snd_soc_pcm_runtime *be = dpcm->be;
1582 struct snd_pcm_substream *be_substream =
1583 snd_soc_dpcm_get_substream(be, stream);
1584
1585 /* is this op for this BE ? */
1586 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1587 continue;
1588
1589 if (be->dpcm[stream].users == 0)
103d84a3 1590 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1591 stream ? "capture" : "playback",
1592 be->dpcm[stream].state);
1593
1594 if (--be->dpcm[stream].users != 0)
1595 continue;
1596
1597 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
1598 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN))
1599 continue;
1600
103d84a3 1601 dev_dbg(be->dev, "ASoC: close BE %s\n",
01d7584c
LG		 1602 dpcm->fe->dai_link->name);
1603
1604 soc_pcm_close(be_substream);
1605 be_substream->runtime = NULL;
1606
1607 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1608 }
1609 return 0;
1610}
1611
1612static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
1613{
1614 struct snd_soc_pcm_runtime *fe = substream->private_data;
1615 int stream = substream->stream;
1616
ea9d0d77 1617 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1618
1619 /* shutdown the BEs */
1620 dpcm_be_dai_shutdown(fe, substream->stream);
1621
103d84a3 1622 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
01d7584c
LG		 1623
1624 /* now shutdown the frontend */
1625 soc_pcm_close(substream);
1626
1627 /* run the stream event for each BE */
1628 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
1629
1630 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
ea9d0d77 1631 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1632 return 0;
1633}
1634
23607025 1635int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1636{
1637 struct snd_soc_dpcm *dpcm;
1638
1639 /* only hw_params backends that are either sinks or sources
1640 * to this frontend DAI */
1641 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1642
1643 struct snd_soc_pcm_runtime *be = dpcm->be;
1644 struct snd_pcm_substream *be_substream =
1645 snd_soc_dpcm_get_substream(be, stream);
1646
1647 /* is this op for this BE ? */
1648 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1649 continue;
1650
1651 /* only free hw when no longer used - check all FEs */
1652 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1653 continue;
1654
36fba62c
QZ		 1655 /* do not free hw if this BE is used by other FE */
1656 if (be->dpcm[stream].users > 1)
1657 continue;
1658
01d7584c
LG		 1659 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1660 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
1661 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
08b27848 1662 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
01d7584c
LG		 1663 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1664 continue;
1665
103d84a3 1666 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
01d7584c
LG		 1667 dpcm->fe->dai_link->name);
1668
1669 soc_pcm_hw_free(be_substream);
1670
1671 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
1672 }
1673
1674 return 0;
1675}
1676
45c0a188 1677static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
01d7584c
LG		 1678{
1679 struct snd_soc_pcm_runtime *fe = substream->private_data;
1680 int err, stream = substream->stream;
1681
1682 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 1683 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 1684
103d84a3 1685 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
01d7584c
LG		 1686
1687 /* call hw_free on the frontend */
1688 err = soc_pcm_hw_free(substream);
1689 if (err < 0)
103d84a3 1690 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
01d7584c
LG		 1691 fe->dai_link->name);
1692
1693 /* only hw_params backends that are either sinks or sources
1694 * to this frontend DAI */
1695 err = dpcm_be_dai_hw_free(fe, stream);
1696
1697 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
ea9d0d77 1698 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1699
1700 mutex_unlock(&fe->card->mutex);
1701 return 0;
1702}
1703
23607025 1704int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1705{
1706 struct snd_soc_dpcm *dpcm;
1707 int ret;
1708
1709 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1710
1711 struct snd_soc_pcm_runtime *be = dpcm->be;
1712 struct snd_pcm_substream *be_substream =
1713 snd_soc_dpcm_get_substream(be, stream);
1714
1715 /* is this op for this BE ? */
1716 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1717 continue;
1718
1719 /* only allow hw_params() if no connected FEs are running */
1720 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
1721 continue;
1722
1723 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
1724 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1725 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
1726 continue;
1727
103d84a3 1728 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
01d7584c
LG		 1729 dpcm->fe->dai_link->name);
1730
1731 /* copy params for each dpcm */
1732 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
1733 sizeof(struct snd_pcm_hw_params));
1734
1735 /* perform any hw_params fixups */
1736 if (be->dai_link->be_hw_params_fixup) {
1737 ret = be->dai_link->be_hw_params_fixup(be,
1738 &dpcm->hw_params);
1739 if (ret < 0) {
1740 dev_err(be->dev,
103d84a3 1741 "ASoC: hw_params BE fixup failed %d\n",
01d7584c
LG		 1742 ret);
1743 goto unwind;
1744 }
1745 }
1746
1747 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
1748 if (ret < 0) {
1749 dev_err(dpcm->be->dev,
103d84a3 1750 "ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 1751 goto unwind;
1752 }
1753
1754 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
1755 }
1756 return 0;
1757
1758unwind:
1759 /* disable any enabled and non active backends */
1760 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1761 struct snd_soc_pcm_runtime *be = dpcm->be;
1762 struct snd_pcm_substream *be_substream =
1763 snd_soc_dpcm_get_substream(be, stream);
1764
1765 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1766 continue;
1767
1768 /* only allow hw_free() if no connected FEs are running */
1769 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1770 continue;
1771
1772 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
1773 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1774 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
1775 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1776 continue;
1777
1778 soc_pcm_hw_free(be_substream);
1779 }
1780
1781 return ret;
1782}
1783
45c0a188
MB		 1784static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
1785 struct snd_pcm_hw_params *params)
01d7584c
LG		 1786{
1787 struct snd_soc_pcm_runtime *fe = substream->private_data;
1788 int ret, stream = substream->stream;
1789
1790 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 1791 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1792
1793 memcpy(&fe->dpcm[substream->stream].hw_params, params,
1794 sizeof(struct snd_pcm_hw_params));
1795 ret = dpcm_be_dai_hw_params(fe, substream->stream);
1796 if (ret < 0) {
103d84a3 1797 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 1798 goto out;
1799 }
1800
103d84a3 1801 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
01d7584c
LG		 1802 fe->dai_link->name, params_rate(params),
1803 params_channels(params), params_format(params));
1804
1805 /* call hw_params on the frontend */
1806 ret = soc_pcm_hw_params(substream, params);
1807 if (ret < 0) {
103d84a3 1808 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
01d7584c
LG		 1809 dpcm_be_dai_hw_free(fe, stream);
1810 } else
1811 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
1812
1813out:
ea9d0d77 1814 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1815 mutex_unlock(&fe->card->mutex);
1816 return ret;
1817}
1818
1819static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
1820 struct snd_pcm_substream *substream, int cmd)
1821{
1822 int ret;
1823
103d84a3 1824 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
01d7584c
LG		 1825 dpcm->fe->dai_link->name, cmd);
1826
1827 ret = soc_pcm_trigger(substream, cmd);
1828 if (ret < 0)
103d84a3 1829 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
01d7584c
LG		 1830
1831 return ret;
1832}
1833
23607025 1834int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
45c0a188 1835 int cmd)
01d7584c
LG		 1836{
1837 struct snd_soc_dpcm *dpcm;
1838 int ret = 0;
1839
1840 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1841
1842 struct snd_soc_pcm_runtime *be = dpcm->be;
1843 struct snd_pcm_substream *be_substream =
1844 snd_soc_dpcm_get_substream(be, stream);
1845
1846 /* is this op for this BE ? */
1847 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1848 continue;
1849
1850 switch (cmd) {
1851 case SNDRV_PCM_TRIGGER_START:
1852 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
1853 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
1854 continue;
1855
1856 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1857 if (ret)
1858 return ret;
1859
1860 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1861 break;
1862 case SNDRV_PCM_TRIGGER_RESUME:
1863 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
1864 continue;
1865
1866 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1867 if (ret)
1868 return ret;
1869
1870 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1871 break;
1872 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1873 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
1874 continue;
1875
1876 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1877 if (ret)
1878 return ret;
1879
1880 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1881 break;
1882 case SNDRV_PCM_TRIGGER_STOP:
1883 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
1884 continue;
1885
1886 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1887 continue;
1888
1889 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1890 if (ret)
1891 return ret;
1892
1893 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
1894 break;
1895 case SNDRV_PCM_TRIGGER_SUSPEND:
868a6ca8 1896 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
01d7584c
LG		 1897 continue;
1898
1899 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1900 continue;
1901
1902 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1903 if (ret)
1904 return ret;
1905
1906 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
1907 break;
1908 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1909 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
1910 continue;
1911
1912 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1913 continue;
1914
1915 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
1916 if (ret)
1917 return ret;
1918
1919 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
1920 break;
1921 }
1922 }
1923
1924 return ret;
1925}
1926EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
1927
ea9d0d77 1928static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
01d7584c
LG		 1929{
1930 struct snd_soc_pcm_runtime *fe = substream->private_data;
1931 int stream = substream->stream, ret;
1932 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
1933
1934 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
1935
1936 switch (trigger) {
1937 case SND_SOC_DPCM_TRIGGER_PRE:
1938 /* call trigger on the frontend before the backend. */
1939
103d84a3 1940 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
01d7584c
LG		 1941 fe->dai_link->name, cmd);
1942
1943 ret = soc_pcm_trigger(substream, cmd);
1944 if (ret < 0) {
103d84a3 1945 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
01d7584c
LG		 1946 goto out;
1947 }
1948
1949 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
1950 break;
1951 case SND_SOC_DPCM_TRIGGER_POST:
1952 /* call trigger on the frontend after the backend. */
1953
1954 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
1955 if (ret < 0) {
103d84a3 1956 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
01d7584c
LG		 1957 goto out;
1958 }
1959
103d84a3 1960 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
01d7584c
LG		 1961 fe->dai_link->name, cmd);
1962
1963 ret = soc_pcm_trigger(substream, cmd);
1964 break;
07bf84aa
LG		 1965 case SND_SOC_DPCM_TRIGGER_BESPOKE:
1966 /* bespoke trigger() - handles both FE and BEs */
1967
103d84a3 1968 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
07bf84aa
LG		 1969 fe->dai_link->name, cmd);
1970
1971 ret = soc_pcm_bespoke_trigger(substream, cmd);
1972 if (ret < 0) {
103d84a3 1973 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
07bf84aa
LG		 1974 goto out;
1975 }
1976 break;
01d7584c 1977 default:
103d84a3 1978 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
01d7584c
LG		 1979 fe->dai_link->name);
1980 ret = -EINVAL;
1981 goto out;
1982 }
1983
1984 switch (cmd) {
1985 case SNDRV_PCM_TRIGGER_START:
1986 case SNDRV_PCM_TRIGGER_RESUME:
1987 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1988 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
1989 break;
1990 case SNDRV_PCM_TRIGGER_STOP:
1991 case SNDRV_PCM_TRIGGER_SUSPEND:
1992 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1993 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
1994 break;
1995 }
1996
1997out:
1998 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
1999 return ret;
2000}
2001
ea9d0d77
TI		 2002static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2003{
2004 struct snd_soc_pcm_runtime *fe = substream->private_data;
2005 int stream = substream->stream;
2006
2007 /* if FE's runtime_update is already set, we're in race;
2008 * process this trigger later at exit
2009 */
2010 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2011 fe->dpcm[stream].trigger_pending = cmd + 1;
2012 return 0; /* delayed, assuming it's successful */
2013 }
2014
2015 /* we're alone, let's trigger */
2016 return dpcm_fe_dai_do_trigger(substream, cmd);
2017}
2018
23607025 2019int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2020{
2021 struct snd_soc_dpcm *dpcm;
2022 int ret = 0;
2023
2024 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2025
2026 struct snd_soc_pcm_runtime *be = dpcm->be;
2027 struct snd_pcm_substream *be_substream =
2028 snd_soc_dpcm_get_substream(be, stream);
2029
2030 /* is this op for this BE ? */
2031 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2032 continue;
2033
2034 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2035 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2036 continue;
2037
103d84a3 2038 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
01d7584c
LG		 2039 dpcm->fe->dai_link->name);
2040
2041 ret = soc_pcm_prepare(be_substream);
2042 if (ret < 0) {
103d84a3 2043 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
01d7584c
LG		 2044 ret);
2045 break;
2046 }
2047
2048 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2049 }
2050 return ret;
2051}
2052
45c0a188 2053static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
01d7584c
LG		 2054{
2055 struct snd_soc_pcm_runtime *fe = substream->private_data;
2056 int stream = substream->stream, ret = 0;
2057
2058 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2059
103d84a3 2060 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
01d7584c 2061
ea9d0d77 2062 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2063
2064 /* there is no point preparing this FE if there are no BEs */
2065 if (list_empty(&fe->dpcm[stream].be_clients)) {
103d84a3 2066 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
01d7584c
LG		 2067 fe->dai_link->name);
2068 ret = -EINVAL;
2069 goto out;
2070 }
2071
2072 ret = dpcm_be_dai_prepare(fe, substream->stream);
2073 if (ret < 0)
2074 goto out;
2075
2076 /* call prepare on the frontend */
2077 ret = soc_pcm_prepare(substream);
2078 if (ret < 0) {
103d84a3 2079 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
01d7584c
LG		 2080 fe->dai_link->name);
2081 goto out;
2082 }
2083
2084 /* run the stream event for each BE */
2085 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2086 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2087
2088out:
ea9d0d77 2089 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2090 mutex_unlock(&fe->card->mutex);
2091
2092 return ret;
2093}
2094
be3f3f2c
LG		 2095static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
2096 unsigned int cmd, void *arg)
2097{
2098 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2099 struct snd_soc_platform *platform = rtd->platform;
2100
c5914b0a 2101 if (platform->driver->ops && platform->driver->ops->ioctl)
be3f3f2c
LG		 2102 return platform->driver->ops->ioctl(substream, cmd, arg);
2103 return snd_pcm_lib_ioctl(substream, cmd, arg);
2104}
2105
618dae11
LG		 2106static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2107{
07bf84aa
LG		 2108 struct snd_pcm_substream *substream =
2109 snd_soc_dpcm_get_substream(fe, stream);
2110 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2111 int err;
2112
103d84a3 2113 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
618dae11
LG		 2114 stream ? "capture" : "playback", fe->dai_link->name);
2115
07bf84aa
LG		 2116 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2117 /* call bespoke trigger - FE takes care of all BE triggers */
103d84a3 2118 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
07bf84aa
LG		 2119 fe->dai_link->name);
2120
2121 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2122 if (err < 0)
103d84a3 2123 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2124 } else {
103d84a3 2125 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
07bf84aa
LG		 2126 fe->dai_link->name);
2127
2128 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2129 if (err < 0)
103d84a3 2130 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2131 }
618dae11
LG		 2132
2133 err = dpcm_be_dai_hw_free(fe, stream);
2134 if (err < 0)
103d84a3 2135 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
618dae11
LG		 2136
2137 err = dpcm_be_dai_shutdown(fe, stream);
2138 if (err < 0)
103d84a3 2139 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
618dae11
LG		 2140
2141 /* run the stream event for each BE */
2142 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2143
2144 return 0;
2145}
2146
2147static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2148{
07bf84aa
LG		 2149 struct snd_pcm_substream *substream =
2150 snd_soc_dpcm_get_substream(fe, stream);
618dae11 2151 struct snd_soc_dpcm *dpcm;
07bf84aa 2152 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2153 int ret;
2154
103d84a3 2155 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
618dae11
LG		 2156 stream ? "capture" : "playback", fe->dai_link->name);
2157
2158 /* Only start the BE if the FE is ready */
2159 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2160 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2161 return -EINVAL;
2162
2163 /* startup must always be called for new BEs */
2164 ret = dpcm_be_dai_startup(fe, stream);
fffc0ca2 2165 if (ret < 0)
618dae11 2166 goto disconnect;
618dae11
LG		 2167
2168 /* keep going if FE state is > open */
2169 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2170 return 0;
01d7584c 2171
618dae11 2172 ret = dpcm_be_dai_hw_params(fe, stream);
fffc0ca2 2173 if (ret < 0)
618dae11 2174 goto close;
618dae11
LG		 2175
2176 /* keep going if FE state is > hw_params */
2177 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2178 return 0;
2179
2180
2181 ret = dpcm_be_dai_prepare(fe, stream);
fffc0ca2 2182 if (ret < 0)
618dae11 2183 goto hw_free;
618dae11
LG		 2184
2185 /* run the stream event for each BE */
2186 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2187
2188 /* keep going if FE state is > prepare */
2189 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2190 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2191 return 0;
2192
07bf84aa
LG		 2193 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2194 /* call trigger on the frontend - FE takes care of all BE triggers */
103d84a3 2195 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
07bf84aa 2196 fe->dai_link->name);
618dae11 2197
07bf84aa
LG		 2198 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2199 if (ret < 0) {
103d84a3 2200 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
07bf84aa
LG		 2201 goto hw_free;
2202 }
2203 } else {
103d84a3 2204 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
07bf84aa
LG		 2205 fe->dai_link->name);
2206
2207 ret = dpcm_be_dai_trigger(fe, stream,
2208 SNDRV_PCM_TRIGGER_START);
2209 if (ret < 0) {
103d84a3 2210 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
07bf84aa
LG		 2211 goto hw_free;
2212 }
618dae11
LG		 2213 }
2214
2215 return 0;
2216
2217hw_free:
2218 dpcm_be_dai_hw_free(fe, stream);
2219close:
2220 dpcm_be_dai_shutdown(fe, stream);
2221disconnect:
2222 /* disconnect any non started BEs */
2223 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2224 struct snd_soc_pcm_runtime *be = dpcm->be;
2225 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2226 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2227 }
2228
2229 return ret;
2230}
2231
2232static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2233{
2234 int ret;
2235
ea9d0d77 2236 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2237 ret = dpcm_run_update_startup(fe, stream);
2238 if (ret < 0)
103d84a3 2239 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
ea9d0d77 2240 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2241
2242 return ret;
2243}
2244
2245static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2246{
2247 int ret;
2248
ea9d0d77 2249 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2250 ret = dpcm_run_update_shutdown(fe, stream);
2251 if (ret < 0)
103d84a3 2252 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
ea9d0d77 2253 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2254
2255 return ret;
2256}
2257
2258/* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2259 * any DAI links.
2260 */
c3f48ae6 2261int soc_dpcm_runtime_update(struct snd_soc_card *card)
618dae11 2262{
618dae11
LG		 2263 int i, old, new, paths;
2264
618dae11
LG		 2265 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2266 for (i = 0; i < card->num_rtd; i++) {
2267 struct snd_soc_dapm_widget_list *list;
2268 struct snd_soc_pcm_runtime *fe = &card->rtd[i];
2269
2270 /* make sure link is FE */
2271 if (!fe->dai_link->dynamic)
2272 continue;
2273
2274 /* only check active links */
2275 if (!fe->cpu_dai->active)
2276 continue;
2277
2278 /* DAPM sync will call this to update DSP paths */
103d84a3 2279 dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n",
618dae11
LG		 2280 fe->dai_link->name);
2281
2282 /* skip if FE doesn't have playback capability */
075207d2
QZ		 2283 if (!fe->cpu_dai->driver->playback.channels_min
2284 || !fe->codec_dai->driver->playback.channels_min)
2285 goto capture;
2286
2287 /* skip if FE isn't currently playing */
2288 if (!fe->cpu_dai->playback_active
2289 || !fe->codec_dai->playback_active)
618dae11
LG		 2290 goto capture;
2291
2292 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2293 if (paths < 0) {
103d84a3 2294 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
618dae11
LG		 2295 fe->dai_link->name, "playback");
2296 mutex_unlock(&card->mutex);
2297 return paths;
2298 }
2299
2300 /* update any new playback paths */
2301 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1);
2302 if (new) {
2303 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2304 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2305 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2306 }
2307
2308 /* update any old playback paths */
2309 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0);
2310 if (old) {
2311 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2312 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2313 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2314 }
2315
7ed9de76 2316 dpcm_path_put(&list);
618dae11
LG		 2317capture:
2318 /* skip if FE doesn't have capture capability */
075207d2
QZ		 2319 if (!fe->cpu_dai->driver->capture.channels_min
2320 || !fe->codec_dai->driver->capture.channels_min)
2321 continue;
2322
2323 /* skip if FE isn't currently capturing */
2324 if (!fe->cpu_dai->capture_active
2325 || !fe->codec_dai->capture_active)
618dae11
LG		 2326 continue;
2327
2328 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2329 if (paths < 0) {
103d84a3 2330 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
618dae11
LG		 2331 fe->dai_link->name, "capture");
2332 mutex_unlock(&card->mutex);
2333 return paths;
2334 }
2335
2336 /* update any new capture paths */
2337 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1);
2338 if (new) {
2339 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2340 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2341 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2342 }
2343
2344 /* update any old capture paths */
2345 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0);
2346 if (old) {
2347 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2348 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2349 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2350 }
2351
2352 dpcm_path_put(&list);
2353 }
2354
2355 mutex_unlock(&card->mutex);
2356 return 0;
2357}
01d7584c
LG		 2358int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2359{
2360 struct snd_soc_dpcm *dpcm;
2361 struct list_head *clients =
2362 &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients;
2363
2364 list_for_each_entry(dpcm, clients, list_be) {
2365
2366 struct snd_soc_pcm_runtime *be = dpcm->be;
2e5894d7 2367 int i;
01d7584c
LG		 2368
2369 if (be->dai_link->ignore_suspend)
2370 continue;
2371
2e5894d7
BC		 2372 for (i = 0; i < be->num_codecs; i++) {
2373 struct snd_soc_dai *dai = be->codec_dais[i];
2374 struct snd_soc_dai_driver *drv = dai->driver;
2375
2376 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2377 be->dai_link->name);
01d7584c 2378
2e5894d7
BC		 2379 if (drv->ops && drv->ops->digital_mute &&
2380 dai->playback_active)
2381 drv->ops->digital_mute(dai, mute);
2382 }
01d7584c
LG		 2383 }
2384
2385 return 0;
2386}
2387
45c0a188 2388static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2389{
2390 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2391 struct snd_soc_dpcm *dpcm;
2392 struct snd_soc_dapm_widget_list *list;
2393 int ret;
2394 int stream = fe_substream->stream;
2395
2396 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2397 fe->dpcm[stream].runtime = fe_substream->runtime;
2398
8f70e515
QZ		 2399 ret = dpcm_path_get(fe, stream, &list);
2400 if (ret < 0) {
2401 mutex_unlock(&fe->card->mutex);
2402 return ret;
2403 } else if (ret == 0) {
103d84a3 2404 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
01d7584c 2405 fe->dai_link->name, stream ? "capture" : "playback");
01d7584c
LG		 2406 }
2407
2408 /* calculate valid and active FE <-> BE dpcms */
2409 dpcm_process_paths(fe, stream, &list, 1);
2410
2411 ret = dpcm_fe_dai_startup(fe_substream);
2412 if (ret < 0) {
2413 /* clean up all links */
2414 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2415 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2416
2417 dpcm_be_disconnect(fe, stream);
2418 fe->dpcm[stream].runtime = NULL;
2419 }
2420
2421 dpcm_clear_pending_state(fe, stream);
2422 dpcm_path_put(&list);
2423 mutex_unlock(&fe->card->mutex);
2424 return ret;
2425}
2426
45c0a188 2427static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2428{
2429 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2430 struct snd_soc_dpcm *dpcm;
2431 int stream = fe_substream->stream, ret;
2432
2433 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2434 ret = dpcm_fe_dai_shutdown(fe_substream);
2435
2436 /* mark FE's links ready to prune */
2437 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2438 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2439
2440 dpcm_be_disconnect(fe, stream);
2441
2442 fe->dpcm[stream].runtime = NULL;
2443 mutex_unlock(&fe->card->mutex);
2444 return ret;
2445}
2446
ddee627c
LG		 2447/* create a new pcm */
2448int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2449{
ddee627c 2450 struct snd_soc_platform *platform = rtd->platform;
2e5894d7 2451 struct snd_soc_dai *codec_dai;
ddee627c
LG		 2452 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2453 struct snd_pcm *pcm;
2454 char new_name[64];
2455 int ret = 0, playback = 0, capture = 0;
2e5894d7 2456 int i;
ddee627c 2457
01d7584c 2458 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
1e9de42f
LG		 2459 playback = rtd->dai_link->dpcm_playback;
2460 capture = rtd->dai_link->dpcm_capture;
01d7584c 2461 } else {
2e5894d7
BC		 2462 for (i = 0; i < rtd->num_codecs; i++) {
2463 codec_dai = rtd->codec_dais[i];
2464 if (codec_dai->driver->playback.channels_min)
2465 playback = 1;
2466 if (codec_dai->driver->capture.channels_min)
2467 capture = 1;
2468 }
2469
2470 capture = capture && cpu_dai->driver->capture.channels_min;
2471 playback = playback && cpu_dai->driver->playback.channels_min;
01d7584c
LG		 2472 }
2473
d6bead02
FE		 2474 if (rtd->dai_link->playback_only) {
2475 playback = 1;
2476 capture = 0;
2477 }
2478
2479 if (rtd->dai_link->capture_only) {
2480 playback = 0;
2481 capture = 1;
2482 }
2483
01d7584c
LG		 2484 /* create the PCM */
2485 if (rtd->dai_link->no_pcm) {
2486 snprintf(new_name, sizeof(new_name), "(%s)",
2487 rtd->dai_link->stream_name);
2488
2489 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2490 playback, capture, &pcm);
2491 } else {
2492 if (rtd->dai_link->dynamic)
2493 snprintf(new_name, sizeof(new_name), "%s (*)",
2494 rtd->dai_link->stream_name);
2495 else
2496 snprintf(new_name, sizeof(new_name), "%s %s-%d",
2e5894d7
BC		 2497 rtd->dai_link->stream_name,
2498 (rtd->num_codecs > 1) ?
2499 "multicodec" : rtd->codec_dai->name, num);
01d7584c
LG		 2500
2501 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
2502 capture, &pcm);
2503 }
ddee627c 2504 if (ret < 0) {
103d84a3 2505 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
5cb9b748 2506 rtd->dai_link->name);
ddee627c
LG		 2507 return ret;
2508 }
103d84a3 2509 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
ddee627c
LG		 2510
2511 /* DAPM dai link stream work */
2512 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
2513
2514 rtd->pcm = pcm;
2515 pcm->private_data = rtd;
01d7584c
LG		 2516
2517 if (rtd->dai_link->no_pcm) {
2518 if (playback)
2519 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
2520 if (capture)
2521 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2522 goto out;
2523 }
2524
2525 /* ASoC PCM operations */
2526 if (rtd->dai_link->dynamic) {
2527 rtd->ops.open = dpcm_fe_dai_open;
2528 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
2529 rtd->ops.prepare = dpcm_fe_dai_prepare;
2530 rtd->ops.trigger = dpcm_fe_dai_trigger;
2531 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
2532 rtd->ops.close = dpcm_fe_dai_close;
2533 rtd->ops.pointer = soc_pcm_pointer;
be3f3f2c 2534 rtd->ops.ioctl = soc_pcm_ioctl;
01d7584c
LG		 2535 } else {
2536 rtd->ops.open = soc_pcm_open;
2537 rtd->ops.hw_params = soc_pcm_hw_params;
2538 rtd->ops.prepare = soc_pcm_prepare;
2539 rtd->ops.trigger = soc_pcm_trigger;
2540 rtd->ops.hw_free = soc_pcm_hw_free;
2541 rtd->ops.close = soc_pcm_close;
2542 rtd->ops.pointer = soc_pcm_pointer;
be3f3f2c 2543 rtd->ops.ioctl = soc_pcm_ioctl;
01d7584c
LG		 2544 }
2545
ddee627c 2546 if (platform->driver->ops) {
01d7584c
LG		 2547 rtd->ops.ack = platform->driver->ops->ack;
2548 rtd->ops.copy = platform->driver->ops->copy;
2549 rtd->ops.silence = platform->driver->ops->silence;
2550 rtd->ops.page = platform->driver->ops->page;
2551 rtd->ops.mmap = platform->driver->ops->mmap;
ddee627c
LG		 2552 }
2553
2554 if (playback)
01d7584c 2555 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
ddee627c
LG		 2556
2557 if (capture)
01d7584c 2558 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
ddee627c
LG		 2559
2560 if (platform->driver->pcm_new) {
2561 ret = platform->driver->pcm_new(rtd);
2562 if (ret < 0) {
b1bc7b3c
MB		 2563 dev_err(platform->dev,
2564 "ASoC: pcm constructor failed: %d\n",
2565 ret);
ddee627c
LG		 2566 return ret;
2567 }
2568 }
2569
2570 pcm->private_free = platform->driver->pcm_free;
01d7584c 2571out:
2e5894d7
BC		 2572 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
2573 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
2574 cpu_dai->name);
ddee627c
LG		 2575 return ret;
2576}
01d7584c
LG		 2577
2578/* is the current PCM operation for this FE ? */
2579int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
2580{
2581 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
2582 return 1;
2583 return 0;
2584}
2585EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
2586
2587/* is the current PCM operation for this BE ? */
2588int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
2589 struct snd_soc_pcm_runtime *be, int stream)
2590{
2591 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
2592 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
2593 be->dpcm[stream].runtime_update))
2594 return 1;
2595 return 0;
2596}
2597EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
2598
2599/* get the substream for this BE */
2600struct snd_pcm_substream *
2601 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
2602{
2603 return be->pcm->streams[stream].substream;
2604}
2605EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
2606
2607/* get the BE runtime state */
2608enum snd_soc_dpcm_state
2609 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
2610{
2611 return be->dpcm[stream].state;
2612}
2613EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
2614
2615/* set the BE runtime state */
2616void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
2617 int stream, enum snd_soc_dpcm_state state)
2618{
2619 be->dpcm[stream].state = state;
2620}
2621EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
2622
2623/*
2624 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
2625 * are not running, paused or suspended for the specified stream direction.
2626 */
2627int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
2628 struct snd_soc_pcm_runtime *be, int stream)
2629{
2630 struct snd_soc_dpcm *dpcm;
2631 int state;
2632
2633 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
2634
2635 if (dpcm->fe == fe)
2636 continue;
2637
2638 state = dpcm->fe->dpcm[stream].state;
2639 if (state == SND_SOC_DPCM_STATE_START ||
2640 state == SND_SOC_DPCM_STATE_PAUSED ||
2641 state == SND_SOC_DPCM_STATE_SUSPEND)
2642 return 0;
2643 }
2644
2645 /* it's safe to free/stop this BE DAI */
2646 return 1;
2647}
2648EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
2649
2650/*
2651 * We can only change hw params a BE DAI if any of it's FE are not prepared,
2652 * running, paused or suspended for the specified stream direction.
2653 */
2654int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
2655 struct snd_soc_pcm_runtime *be, int stream)
2656{
2657 struct snd_soc_dpcm *dpcm;
2658 int state;
2659
2660 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
2661
2662 if (dpcm->fe == fe)
2663 continue;
2664
2665 state = dpcm->fe->dpcm[stream].state;
2666 if (state == SND_SOC_DPCM_STATE_START ||
2667 state == SND_SOC_DPCM_STATE_PAUSED ||
2668 state == SND_SOC_DPCM_STATE_SUSPEND ||
2669 state == SND_SOC_DPCM_STATE_PREPARE)
2670 return 0;
2671 }
2672
2673 /* it's safe to change hw_params */
2674 return 1;
2675}
2676EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
f86dcef8 2677
07bf84aa
LG		 2678int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
2679 int cmd, struct snd_soc_platform *platform)
2680{
c5914b0a 2681 if (platform->driver->ops && platform->driver->ops->trigger)
07bf84aa
LG		 2682 return platform->driver->ops->trigger(substream, cmd);
2683 return 0;
2684}
2685EXPORT_SYMBOL_GPL(snd_soc_platform_trigger);
2686
f86dcef8
LG		 2687#ifdef CONFIG_DEBUG_FS
2688static char *dpcm_state_string(enum snd_soc_dpcm_state state)
2689{
2690 switch (state) {
2691 case SND_SOC_DPCM_STATE_NEW:
2692 return "new";
2693 case SND_SOC_DPCM_STATE_OPEN:
2694 return "open";
2695 case SND_SOC_DPCM_STATE_HW_PARAMS:
2696 return "hw_params";
2697 case SND_SOC_DPCM_STATE_PREPARE:
2698 return "prepare";
2699 case SND_SOC_DPCM_STATE_START:
2700 return "start";
2701 case SND_SOC_DPCM_STATE_STOP:
2702 return "stop";
2703 case SND_SOC_DPCM_STATE_SUSPEND:
2704 return "suspend";
2705 case SND_SOC_DPCM_STATE_PAUSED:
2706 return "paused";
2707 case SND_SOC_DPCM_STATE_HW_FREE:
2708 return "hw_free";
2709 case SND_SOC_DPCM_STATE_CLOSE:
2710 return "close";
2711 }
2712
2713 return "unknown";
2714}
2715
f86dcef8
LG		 2716static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
2717 int stream, char *buf, size_t size)
2718{
2719 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
2720 struct snd_soc_dpcm *dpcm;
2721 ssize_t offset = 0;
2722
2723 /* FE state */
2724 offset += snprintf(buf + offset, size - offset,
2725 "[%s - %s]\n", fe->dai_link->name,
2726 stream ? "Capture" : "Playback");
2727
2728 offset += snprintf(buf + offset, size - offset, "State: %s\n",
2729 dpcm_state_string(fe->dpcm[stream].state));
2730
2731 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
2732 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
2733 offset += snprintf(buf + offset, size - offset,
2734 "Hardware Params: "
2735 "Format = %s, Channels = %d, Rate = %d\n",
2736 snd_pcm_format_name(params_format(params)),
2737 params_channels(params),
2738 params_rate(params));
2739
2740 /* BEs state */
2741 offset += snprintf(buf + offset, size - offset, "Backends:\n");
2742
2743 if (list_empty(&fe->dpcm[stream].be_clients)) {
2744 offset += snprintf(buf + offset, size - offset,
2745 " No active DSP links\n");
2746 goto out;
2747 }
2748
2749 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2750 struct snd_soc_pcm_runtime *be = dpcm->be;
2751 params = &dpcm->hw_params;
2752
2753 offset += snprintf(buf + offset, size - offset,
2754 "- %s\n", be->dai_link->name);
2755
2756 offset += snprintf(buf + offset, size - offset,
2757 " State: %s\n",
2758 dpcm_state_string(be->dpcm[stream].state));
2759
2760 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
2761 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
2762 offset += snprintf(buf + offset, size - offset,
2763 " Hardware Params: "
2764 "Format = %s, Channels = %d, Rate = %d\n",
2765 snd_pcm_format_name(params_format(params)),
2766 params_channels(params),
2767 params_rate(params));
2768 }
2769
2770out:
2771 return offset;
2772}
2773
2774static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
2775 size_t count, loff_t *ppos)
2776{
2777 struct snd_soc_pcm_runtime *fe = file->private_data;
2778 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
2779 char *buf;
2780
2781 buf = kmalloc(out_count, GFP_KERNEL);
2782 if (!buf)
2783 return -ENOMEM;
2784
2785 if (fe->cpu_dai->driver->playback.channels_min)
2786 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
2787 buf + offset, out_count - offset);
2788
2789 if (fe->cpu_dai->driver->capture.channels_min)
2790 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
2791 buf + offset, out_count - offset);
2792
f57b8488 2793 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
f86dcef8 2794
f57b8488
LG		 2795 kfree(buf);
2796 return ret;
f86dcef8
LG		 2797}
2798
2799static const struct file_operations dpcm_state_fops = {
f57b8488 2800 .open = simple_open,
f86dcef8
LG		 2801 .read = dpcm_state_read_file,
2802 .llseek = default_llseek,
2803};
2804
2e55b90a 2805void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
f86dcef8 2806{
b3bba9a1 2807 if (!rtd->dai_link)
2e55b90a 2808 return;
b3bba9a1 2809
f86dcef8
LG		 2810 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
2811 rtd->card->debugfs_card_root);
2812 if (!rtd->debugfs_dpcm_root) {
2813 dev_dbg(rtd->dev,
2814 "ASoC: Failed to create dpcm debugfs directory %s\n",
2815 rtd->dai_link->name);
2e55b90a 2816 return;
f86dcef8
LG		 2817 }
2818
f57b8488 2819 rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444,
f86dcef8
LG		 2820 rtd->debugfs_dpcm_root,
2821 rtd, &dpcm_state_fops);
f86dcef8
LG		 2822}
2823#endif
Linux 6.x block layer and io_uring tree(s)