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ASoC: core: Fix compile warning with CONFIG_DEBUG_FS=n
[linux-2.6-block.git] / sound / soc / soc-pcm.c
CommitLineData
ed517582
KM		 1// SPDX-License-Identifier: GPL-2.0+
2//
3// soc-pcm.c -- ALSA SoC PCM
4//
5// Copyright 2005 Wolfson Microelectronics PLC.
6// Copyright 2005 Openedhand Ltd.
7// Copyright (C) 2010 Slimlogic Ltd.
8// Copyright (C) 2010 Texas Instruments Inc.
9//
10// Authors: Liam Girdwood <lrg@ti.com>
11// Mark Brown <broonie@opensource.wolfsonmicro.com>
ddee627c
LG		 12
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/delay.h>
988e8cc4 16#include <linux/pinctrl/consumer.h>
d6652ef8 17#include <linux/pm_runtime.h>
ddee627c
LG		 18#include <linux/slab.h>
19#include <linux/workqueue.h>
01d7584c 20#include <linux/export.h>
f86dcef8 21#include <linux/debugfs.h>
ddee627c
LG		 22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
01d7584c 26#include <sound/soc-dpcm.h>
ddee627c
LG		 27#include <sound/initval.h>
28
01d7584c
LG		 29#define DPCM_MAX_BE_USERS 8
30
24894b76
LPC		 31/**
32 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
33 * @rtd: ASoC PCM runtime that is activated
34 * @stream: Direction of the PCM stream
35 *
36 * Increments the active count for all the DAIs and components attached to a PCM
37 * runtime. Should typically be called when a stream is opened.
38 *
72b745e3 39 * Must be called with the rtd->card->pcm_mutex being held
24894b76
LPC		 40 */
41void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream)
42{
43 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
0b7990e3 44 struct snd_soc_dai *codec_dai;
2e5894d7 45 int i;
24894b76 46
72b745e3 47 lockdep_assert_held(&rtd->card->pcm_mutex);
24894b76
LPC		 48
49 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
50 cpu_dai->playback_active++;
0b7990e3
KM		 51 for_each_rtd_codec_dai(rtd, i, codec_dai)
52 codec_dai->playback_active++;
24894b76
LPC		 53 } else {
54 cpu_dai->capture_active++;
0b7990e3
KM		 55 for_each_rtd_codec_dai(rtd, i, codec_dai)
56 codec_dai->capture_active++;
24894b76
LPC		 57 }
58
59 cpu_dai->active++;
cdde4ccb 60 cpu_dai->component->active++;
0b7990e3
KM		 61 for_each_rtd_codec_dai(rtd, i, codec_dai) {
62 codec_dai->active++;
63 codec_dai->component->active++;
2e5894d7 64 }
24894b76
LPC		 65}
66
67/**
68 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
69 * @rtd: ASoC PCM runtime that is deactivated
70 * @stream: Direction of the PCM stream
71 *
72 * Decrements the active count for all the DAIs and components attached to a PCM
73 * runtime. Should typically be called when a stream is closed.
74 *
72b745e3 75 * Must be called with the rtd->card->pcm_mutex being held
24894b76
LPC		 76 */
77void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream)
78{
79 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
0b7990e3 80 struct snd_soc_dai *codec_dai;
2e5894d7 81 int i;
24894b76 82
72b745e3 83 lockdep_assert_held(&rtd->card->pcm_mutex);
24894b76
LPC		 84
85 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
86 cpu_dai->playback_active--;
0b7990e3
KM		 87 for_each_rtd_codec_dai(rtd, i, codec_dai)
88 codec_dai->playback_active--;
24894b76
LPC		 89 } else {
90 cpu_dai->capture_active--;
0b7990e3
KM		 91 for_each_rtd_codec_dai(rtd, i, codec_dai)
92 codec_dai->capture_active--;
24894b76
LPC		 93 }
94
95 cpu_dai->active--;
cdde4ccb 96 cpu_dai->component->active--;
0b7990e3
KM		 97 for_each_rtd_codec_dai(rtd, i, codec_dai) {
98 codec_dai->component->active--;
99 codec_dai->active--;
2e5894d7 100 }
24894b76
LPC		 101}
102
208a1589
LPC		 103/**
104 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
105 * @rtd: The ASoC PCM runtime that should be checked.
106 *
107 * This function checks whether the power down delay should be ignored for a
108 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
109 * been configured to ignore the delay, or if none of the components benefits
110 * from having the delay.
111 */
112bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
113{
fbb16563
KM		 114 struct snd_soc_rtdcom_list *rtdcom;
115 struct snd_soc_component *component;
2e5894d7
BC		 116 bool ignore = true;
117
208a1589
LPC		 118 if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
119 return true;
120
2b544dd7 121 for_each_rtd_components(rtd, rtdcom, component)
72c38184 122 ignore &= !component->driver->use_pmdown_time;
fbb16563 123
fbb16563 124 return ignore;
208a1589
LPC		 125}
126
90996f43
LPC		 127/**
128 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
129 * @substream: the pcm substream
130 * @hw: the hardware parameters
131 *
132 * Sets the substream runtime hardware parameters.
133 */
134int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
135 const struct snd_pcm_hardware *hw)
136{
137 struct snd_pcm_runtime *runtime = substream->runtime;
138 runtime->hw.info = hw->info;
139 runtime->hw.formats = hw->formats;
140 runtime->hw.period_bytes_min = hw->period_bytes_min;
141 runtime->hw.period_bytes_max = hw->period_bytes_max;
142 runtime->hw.periods_min = hw->periods_min;
143 runtime->hw.periods_max = hw->periods_max;
144 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
145 runtime->hw.fifo_size = hw->fifo_size;
146 return 0;
147}
148EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
149
01d7584c 150/* DPCM stream event, send event to FE and all active BEs. */
23607025 151int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
01d7584c
LG		 152 int event)
153{
154 struct snd_soc_dpcm *dpcm;
155
8d6258a4 156 for_each_dpcm_be(fe, dir, dpcm) {
01d7584c
LG		 157
158 struct snd_soc_pcm_runtime *be = dpcm->be;
159
103d84a3 160 dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
01d7584c
LG		 161 be->dai_link->name, event, dir);
162
b1cd2e34
BG		 163 if ((event == SND_SOC_DAPM_STREAM_STOP) &&
164 (be->dpcm[dir].users >= 1))
165 continue;
166
01d7584c
LG		 167 snd_soc_dapm_stream_event(be, dir, event);
168 }
169
170 snd_soc_dapm_stream_event(fe, dir, event);
171
172 return 0;
173}
174
17841020
DA		 175static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
176 struct snd_soc_dai *soc_dai)
ddee627c
LG		 177{
178 struct snd_soc_pcm_runtime *rtd = substream->private_data;
ddee627c
LG		 179 int ret;
180
3635bf09
NC		 181 if (soc_dai->rate && (soc_dai->driver->symmetric_rates ||
182 rtd->dai_link->symmetric_rates)) {
183 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n",
184 soc_dai->rate);
185
4dcdd43b 186 ret = snd_pcm_hw_constraint_single(substream->runtime,
3635bf09 187 SNDRV_PCM_HW_PARAM_RATE,
4dcdd43b 188 soc_dai->rate);
3635bf09
NC		 189 if (ret < 0) {
190 dev_err(soc_dai->dev,
191 "ASoC: Unable to apply rate constraint: %d\n",
192 ret);
193 return ret;
194 }
195 }
ddee627c 196
3635bf09
NC		 197 if (soc_dai->channels && (soc_dai->driver->symmetric_channels ||
198 rtd->dai_link->symmetric_channels)) {
199 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n",
200 soc_dai->channels);
ddee627c 201
4dcdd43b 202 ret = snd_pcm_hw_constraint_single(substream->runtime,
3635bf09 203 SNDRV_PCM_HW_PARAM_CHANNELS,
3635bf09
NC		 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
4dcdd43b 218 ret = snd_pcm_hw_constraint_single(substream->runtime,
3635bf09 219 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
3635bf09
NC		 220 soc_dai->sample_bits);
221 if (ret < 0) {
222 dev_err(soc_dai->dev,
223 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
224 ret);
225 return ret;
226 }
ddee627c
LG		 227 }
228
229 return 0;
230}
231
3635bf09
NC		 232static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
233 struct snd_pcm_hw_params *params)
234{
235 struct snd_soc_pcm_runtime *rtd = substream->private_data;
236 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
0b7990e3 237 struct snd_soc_dai *codec_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 247
0b7990e3
KM		 248 for_each_rtd_codec_dai(rtd, i, codec_dai)
249 symmetry |= codec_dai->driver->symmetric_rates;
2e5894d7 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 259
0b7990e3
KM		 260 for_each_rtd_codec_dai(rtd, i, codec_dai)
261 symmetry |= codec_dai->driver->symmetric_channels;
2e5894d7 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 271
0b7990e3
KM		 272 for_each_rtd_codec_dai(rtd, i, codec_dai)
273 symmetry |= codec_dai->driver->symmetric_samplebits;
2e5894d7 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;
0b7990e3 289 struct snd_soc_dai *codec_dai;
2e5894d7 290 unsigned int symmetry, i;
62e5f676 291
2e5894d7
BC		 292 symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
293 cpu_driver->symmetric_channels || link->symmetric_channels ||
294 cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
62e5f676 295
0b7990e3 296 for_each_rtd_codec_dai(rtd, i, codec_dai)
2e5894d7 297 symmetry = symmetry ||
0b7990e3
KM		 298 codec_dai->driver->symmetric_rates ||
299 codec_dai->driver->symmetric_channels ||
300 codec_dai->driver->symmetric_samplebits;
2e5894d7
BC		 301
302 return symmetry;
62e5f676
LPC		 303}
304
2e5894d7 305static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
58ba9b25 306{
2e5894d7 307 struct snd_soc_pcm_runtime *rtd = substream->private_data;
c6068d3a 308 int ret;
58ba9b25
MB		 309
310 if (!bits)
311 return;
312
0e2a3751
LPC		 313 ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
314 if (ret != 0)
315 dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
316 bits, ret);
58ba9b25
MB		 317}
318
c8dd1fec
BC		 319static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
320{
321 struct snd_soc_pcm_runtime *rtd = substream->private_data;
322 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 323 struct snd_soc_dai *codec_dai;
324 int i;
c8dd1fec
BC		 325 unsigned int bits = 0, cpu_bits;
326
327 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
0b7990e3 328 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2e5894d7
BC		 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 {
0b7990e3 337 for_each_rtd_codec_dai(rtd, i, codec_dai) {
5e63dfcc 338 if (codec_dai->driver->capture.sig_bits == 0) {
2e5894d7
BC		 339 bits = 0;
340 break;
341 }
342 bits = max(codec_dai->driver->capture.sig_bits, bits);
343 }
c8dd1fec
BC		 344 cpu_bits = cpu_dai->driver->capture.sig_bits;
345 }
346
2e5894d7
BC		 347 soc_pcm_set_msb(substream, bits);
348 soc_pcm_set_msb(substream, cpu_bits);
c8dd1fec
BC		 349}
350
2e5894d7 351static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
bd477c31 352{
2e5894d7 353 struct snd_pcm_runtime *runtime = substream->runtime;
78e45c99 354 struct snd_pcm_hardware *hw = &runtime->hw;
2e5894d7 355 struct snd_soc_pcm_runtime *rtd = substream->private_data;
0b7990e3 356 struct snd_soc_dai *codec_dai;
2e5894d7
BC		 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 372 /* first calculate min/max only for CODECs in the DAI link */
0b7990e3 373 for_each_rtd_codec_dai(rtd, i, codec_dai) {
cde79035
RW		 374
375 /*
376 * Skip CODECs which don't support the current stream type.
377 * Otherwise, since the rate, channel, and format values will
378 * zero in that case, we would have no usable settings left,
379 * causing the resulting setup to fail.
380 * At least one CODEC should match, otherwise we should have
381 * bailed out on a higher level, since there would be no
382 * CODEC to support the transfer direction in that case.
383 */
0b7990e3 384 if (!snd_soc_dai_stream_valid(codec_dai,
cde79035
RW		 385 substream->stream))
386 continue;
387
0b7990e3 388 codec_dai_drv = codec_dai->driver;
2e5894d7
BC		 389 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
390 codec_stream = &codec_dai_drv->playback;
391 else
392 codec_stream = &codec_dai_drv->capture;
393 chan_min = max(chan_min, codec_stream->channels_min);
394 chan_max = min(chan_max, codec_stream->channels_max);
395 rate_min = max(rate_min, codec_stream->rate_min);
396 rate_max = min_not_zero(rate_max, codec_stream->rate_max);
397 formats &= codec_stream->formats;
398 rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates);
399 }
400
401 /*
402 * chan min/max cannot be enforced if there are multiple CODEC DAIs
403 * connected to a single CPU DAI, use CPU DAI's directly and let
404 * channel allocation be fixed up later
405 */
406 if (rtd->num_codecs > 1) {
407 chan_min = cpu_stream->channels_min;
408 chan_max = cpu_stream->channels_max;
409 }
410
411 hw->channels_min = max(chan_min, cpu_stream->channels_min);
412 hw->channels_max = min(chan_max, cpu_stream->channels_max);
413 if (hw->formats)
414 hw->formats &= formats & cpu_stream->formats;
415 else
416 hw->formats = formats & cpu_stream->formats;
417 hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
78e45c99
LPC		 418
419 snd_pcm_limit_hw_rates(runtime);
420
421 hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
2e5894d7 422 hw->rate_min = max(hw->rate_min, rate_min);
78e45c99 423 hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
2e5894d7 424 hw->rate_max = min_not_zero(hw->rate_max, rate_max);
bd477c31
LPC		 425}
426
e7ecfdb7
KM		 427static int soc_pcm_components_open(struct snd_pcm_substream *substream,
428 struct snd_soc_component **last)
429{
430 struct snd_soc_pcm_runtime *rtd = substream->private_data;
431 struct snd_soc_rtdcom_list *rtdcom;
432 struct snd_soc_component *component;
433 int ret = 0;
434
2b544dd7 435 for_each_rtd_components(rtd, rtdcom, component) {
e7ecfdb7
KM		 436 *last = component;
437
4a81e8f3
KM		 438 ret = snd_soc_component_module_get_when_open(component);
439 if (ret < 0) {
e7ecfdb7
KM		 440 dev_err(component->dev,
441 "ASoC: can't get module %s\n",
442 component->name);
4a81e8f3 443 return ret;
e7ecfdb7
KM		 444 }
445
ae2f4849 446 ret = snd_soc_component_open(component, substream);
e7ecfdb7
KM		 447 if (ret < 0) {
448 dev_err(component->dev,
449 "ASoC: can't open component %s: %d\n",
450 component->name, ret);
451 return ret;
452 }
453 }
454 *last = NULL;
455 return 0;
456}
457
244e2936
CK		 458static int soc_pcm_components_close(struct snd_pcm_substream *substream,
459 struct snd_soc_component *last)
460{
461 struct snd_soc_pcm_runtime *rtd = substream->private_data;
462 struct snd_soc_rtdcom_list *rtdcom;
463 struct snd_soc_component *component;
3672beb8 464 int ret = 0;
244e2936 465
2b544dd7 466 for_each_rtd_components(rtd, rtdcom, component) {
244e2936
CK		 467 if (component == last)
468 break;
469
3672beb8 470 ret |= snd_soc_component_close(component, substream);
4a81e8f3 471 snd_soc_component_module_put_when_close(component);
244e2936
CK		 472 }
473
3672beb8 474 return ret;
244e2936
CK		 475}
476
ddee627c
LG		 477/*
478 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
479 * then initialized and any private data can be allocated. This also calls
ef050bec 480 * startup for the cpu DAI, component, machine and codec DAI.
ddee627c
LG		 481 */
482static int soc_pcm_open(struct snd_pcm_substream *substream)
483{
484 struct snd_soc_pcm_runtime *rtd = substream->private_data;
485 struct snd_pcm_runtime *runtime = substream->runtime;
90be711e
KM		 486 struct snd_soc_component *component;
487 struct snd_soc_rtdcom_list *rtdcom;
ddee627c 488 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 489 struct snd_soc_dai *codec_dai;
490 const char *codec_dai_name = "multicodec";
244e2936 491 int i, ret = 0;
ddee627c 492
988e8cc4 493 pinctrl_pm_select_default_state(cpu_dai->dev);
0b7990e3
KM		 494 for_each_rtd_codec_dai(rtd, i, codec_dai)
495 pinctrl_pm_select_default_state(codec_dai->dev);
90be711e 496
2b544dd7 497 for_each_rtd_components(rtd, rtdcom, component) {
90be711e
KM		 498 pm_runtime_get_sync(component->dev);
499 }
d6652ef8 500
72b745e3 501 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ddee627c
LG		 502
503 /* startup the audio subsystem */
5a52a045
KM		 504 ret = snd_soc_dai_startup(cpu_dai, substream);
505 if (ret < 0) {
506 dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n",
507 cpu_dai->name, ret);
508 goto out;
ddee627c
LG		 509 }
510
e7ecfdb7
KM		 511 ret = soc_pcm_components_open(substream, &component);
512 if (ret < 0)
513 goto component_err;
b8135864 514
0b7990e3 515 for_each_rtd_codec_dai(rtd, i, codec_dai) {
5a52a045
KM		 516 ret = snd_soc_dai_startup(codec_dai, substream);
517 if (ret < 0) {
518 dev_err(codec_dai->dev,
519 "ASoC: can't open codec %s: %d\n",
520 codec_dai->name, ret);
521 goto codec_dai_err;
ddee627c 522 }
2e5894d7
BC		 523
524 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
525 codec_dai->tx_mask = 0;
526 else
527 codec_dai->rx_mask = 0;
ddee627c
LG		 528 }
529
75ab9eb6 530 if (rtd->dai_link->ops->startup) {
ddee627c
LG		 531 ret = rtd->dai_link->ops->startup(substream);
532 if (ret < 0) {
103d84a3 533 pr_err("ASoC: %s startup failed: %d\n",
25bfe662 534 rtd->dai_link->name, ret);
ddee627c
LG		 535 goto machine_err;
536 }
537 }
538
01d7584c
LG		 539 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
540 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
541 goto dynamic;
542
ddee627c 543 /* Check that the codec and cpu DAIs are compatible */
2e5894d7
BC		 544 soc_pcm_init_runtime_hw(substream);
545
546 if (rtd->num_codecs == 1)
547 codec_dai_name = rtd->codec_dai->name;
ddee627c 548
62e5f676
LPC		 549 if (soc_pcm_has_symmetry(substream))
550 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
551
ddee627c 552 ret = -EINVAL;
ddee627c 553 if (!runtime->hw.rates) {
103d84a3 554 printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
2e5894d7 555 codec_dai_name, cpu_dai->name);
ddee627c
LG		 556 goto config_err;
557 }
558 if (!runtime->hw.formats) {
103d84a3 559 printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
2e5894d7 560 codec_dai_name, cpu_dai->name);
ddee627c
LG		 561 goto config_err;
562 }
563 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
564 runtime->hw.channels_min > runtime->hw.channels_max) {
103d84a3 565 printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
2e5894d7 566 codec_dai_name, cpu_dai->name);
ddee627c
LG		 567 goto config_err;
568 }
569
c8dd1fec 570 soc_pcm_apply_msb(substream);
58ba9b25 571
ddee627c 572 /* Symmetry only applies if we've already got an active stream. */
17841020
DA		 573 if (cpu_dai->active) {
574 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
575 if (ret != 0)
576 goto config_err;
577 }
578
0b7990e3
KM		 579 for_each_rtd_codec_dai(rtd, i, codec_dai) {
580 if (codec_dai->active) {
581 ret = soc_pcm_apply_symmetry(substream, codec_dai);
2e5894d7
BC		 582 if (ret != 0)
583 goto config_err;
584 }
ddee627c
LG		 585 }
586
103d84a3 587 pr_debug("ASoC: %s <-> %s info:\n",
2e5894d7 588 codec_dai_name, cpu_dai->name);
103d84a3
LG		 589 pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates);
590 pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min,
ddee627c 591 runtime->hw.channels_max);
103d84a3 592 pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
ddee627c
LG		 593 runtime->hw.rate_max);
594
01d7584c 595dynamic:
24894b76
LPC		 596
597 snd_soc_runtime_activate(rtd, substream->stream);
598
72b745e3 599 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 600 return 0;
601
602config_err:
75ab9eb6 603 if (rtd->dai_link->ops->shutdown)
ddee627c
LG		 604 rtd->dai_link->ops->shutdown(substream);
605
606machine_err:
2e5894d7 607 i = rtd->num_codecs;
ddee627c
LG		 608
609codec_dai_err:
330fcb51
KM		 610 for_each_rtd_codec_dai_rollback(rtd, i, codec_dai)
611 snd_soc_dai_shutdown(codec_dai, substream);
2e5894d7 612
b8135864 613component_err:
244e2936 614 soc_pcm_components_close(substream, component);
e7ecfdb7 615
330fcb51 616 snd_soc_dai_shutdown(cpu_dai, substream);
ddee627c 617out:
72b745e3 618 mutex_unlock(&rtd->card->pcm_mutex);
d6652ef8 619
2b544dd7 620 for_each_rtd_components(rtd, rtdcom, component) {
90be711e
KM		 621 pm_runtime_mark_last_busy(component->dev);
622 pm_runtime_put_autosuspend(component->dev);
3f809783
SK		 623 }
624
0b7990e3
KM		 625 for_each_rtd_codec_dai(rtd, i, codec_dai) {
626 if (!codec_dai->active)
627 pinctrl_pm_select_sleep_state(codec_dai->dev);
2e5894d7 628 }
988e8cc4
NC		 629 if (!cpu_dai->active)
630 pinctrl_pm_select_sleep_state(cpu_dai->dev);
d6652ef8 631
ddee627c
LG		 632 return ret;
633}
634
635/*
636 * Power down the audio subsystem pmdown_time msecs after close is called.
637 * This is to ensure there are no pops or clicks in between any music tracks
638 * due to DAPM power cycling.
639 */
640static void close_delayed_work(struct work_struct *work)
641{
642 struct snd_soc_pcm_runtime *rtd =
643 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
2e5894d7 644 struct snd_soc_dai *codec_dai = rtd->codec_dais[0];
ddee627c 645
72b745e3 646 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ddee627c 647
103d84a3 648 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
ddee627c
LG		 649 codec_dai->driver->playback.stream_name,
650 codec_dai->playback_active ? "active" : "inactive",
9bffb1fb 651 rtd->pop_wait ? "yes" : "no");
ddee627c
LG		 652
653 /* are we waiting on this codec DAI stream */
9bffb1fb
MLC		 654 if (rtd->pop_wait == 1) {
655 rtd->pop_wait = 0;
7bd3a6f3 656 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
d9b0951b 657 SND_SOC_DAPM_STREAM_STOP);
ddee627c
LG		 658 }
659
72b745e3 660 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 661}
662
a342031c
JB		 663static void codec2codec_close_delayed_work(struct work_struct *work)
664{
665 /*
666 * Currently nothing to do for c2c links
667 * Since c2c links are internal nodes in the DAPM graph and
668 * don't interface with the outside world or application layer
669 * we don't have to do any special handling on close.
670 */
671}
672
ddee627c
LG		 673/*
674 * Called by ALSA when a PCM substream is closed. Private data can be
ef050bec 675 * freed here. The cpu DAI, codec DAI, machine and components are also
ddee627c
LG		 676 * shutdown.
677 */
91d5e6b4 678static int soc_pcm_close(struct snd_pcm_substream *substream)
ddee627c
LG		 679{
680 struct snd_soc_pcm_runtime *rtd = substream->private_data;
90be711e
KM		 681 struct snd_soc_component *component;
682 struct snd_soc_rtdcom_list *rtdcom;
ddee627c 683 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 684 struct snd_soc_dai *codec_dai;
685 int i;
ddee627c 686
72b745e3 687 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ddee627c 688
24894b76 689 snd_soc_runtime_deactivate(rtd, substream->stream);
ddee627c 690
17841020
DA		 691 /* clear the corresponding DAIs rate when inactive */
692 if (!cpu_dai->active)
693 cpu_dai->rate = 0;
694
0b7990e3 695 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2e5894d7
BC		 696 if (!codec_dai->active)
697 codec_dai->rate = 0;
698 }
25b76791 699
ae11601b
RB		 700 snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
701
330fcb51 702 snd_soc_dai_shutdown(cpu_dai, substream);
ddee627c 703
330fcb51
KM		 704 for_each_rtd_codec_dai(rtd, i, codec_dai)
705 snd_soc_dai_shutdown(codec_dai, substream);
ddee627c 706
75ab9eb6 707 if (rtd->dai_link->ops->shutdown)
ddee627c
LG		 708 rtd->dai_link->ops->shutdown(substream);
709
244e2936 710 soc_pcm_components_close(substream, NULL);
b8135864 711
ddee627c 712 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
208a1589 713 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
1d69c5c5
PU		 714 /* powered down playback stream now */
715 snd_soc_dapm_stream_event(rtd,
7bd3a6f3 716 SNDRV_PCM_STREAM_PLAYBACK,
7bd3a6f3 717 SND_SOC_DAPM_STREAM_STOP);
1d69c5c5
PU		 718 } else {
719 /* start delayed pop wq here for playback streams */
9bffb1fb 720 rtd->pop_wait = 1;
d4e1a73a
MB		 721 queue_delayed_work(system_power_efficient_wq,
722 &rtd->delayed_work,
723 msecs_to_jiffies(rtd->pmdown_time));
1d69c5c5 724 }
ddee627c
LG		 725 } else {
726 /* capture streams can be powered down now */
7bd3a6f3 727 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
d9b0951b 728 SND_SOC_DAPM_STREAM_STOP);
ddee627c
LG		 729 }
730
72b745e3 731 mutex_unlock(&rtd->card->pcm_mutex);
d6652ef8 732
2b544dd7 733 for_each_rtd_components(rtd, rtdcom, component) {
90be711e
KM		 734 pm_runtime_mark_last_busy(component->dev);
735 pm_runtime_put_autosuspend(component->dev);
3f809783
SK		 736 }
737
0b7990e3
KM		 738 for_each_rtd_codec_dai(rtd, i, codec_dai) {
739 if (!codec_dai->active)
740 pinctrl_pm_select_sleep_state(codec_dai->dev);
2e5894d7 741 }
988e8cc4
NC		 742 if (!cpu_dai->active)
743 pinctrl_pm_select_sleep_state(cpu_dai->dev);
d6652ef8 744
ddee627c
LG		 745 return 0;
746}
747
748/*
749 * Called by ALSA when the PCM substream is prepared, can set format, sample
750 * rate, etc. This function is non atomic and can be called multiple times,
751 * it can refer to the runtime info.
752 */
753static int soc_pcm_prepare(struct snd_pcm_substream *substream)
754{
755 struct snd_soc_pcm_runtime *rtd = substream->private_data;
b8135864
KM		 756 struct snd_soc_component *component;
757 struct snd_soc_rtdcom_list *rtdcom;
ddee627c 758 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 759 struct snd_soc_dai *codec_dai;
760 int i, ret = 0;
ddee627c 761
72b745e3 762 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ddee627c 763
75ab9eb6 764 if (rtd->dai_link->ops->prepare) {
ddee627c
LG		 765 ret = rtd->dai_link->ops->prepare(substream);
766 if (ret < 0) {
103d84a3
LG		 767 dev_err(rtd->card->dev, "ASoC: machine prepare error:"
768 " %d\n", ret);
ddee627c
LG		 769 goto out;
770 }
771 }
772
2b544dd7 773 for_each_rtd_components(rtd, rtdcom, component) {
6d537233 774 ret = snd_soc_component_prepare(component, substream);
b8135864
KM		 775 if (ret < 0) {
776 dev_err(component->dev,
777 "ASoC: platform prepare error: %d\n", ret);
778 goto out;
779 }
780 }
781
0b7990e3 782 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4beb8e10 783 ret = snd_soc_dai_prepare(codec_dai, substream);
ddee627c 784 if (ret < 0) {
4beb8e10
KM		 785 dev_err(codec_dai->dev,
786 "ASoC: codec DAI prepare error: %d\n",
787 ret);
ddee627c
LG		 788 goto out;
789 }
790 }
791
4beb8e10
KM		 792 ret = snd_soc_dai_prepare(cpu_dai, substream);
793 if (ret < 0) {
794 dev_err(cpu_dai->dev,
795 "ASoC: cpu DAI prepare error: %d\n", ret);
796 goto out;
797 }
798
ddee627c
LG		 799 /* cancel any delayed stream shutdown that is pending */
800 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
9bffb1fb
MLC		 801 rtd->pop_wait) {
802 rtd->pop_wait = 0;
ddee627c
LG		 803 cancel_delayed_work(&rtd->delayed_work);
804 }
805
d9b0951b
LG		 806 snd_soc_dapm_stream_event(rtd, substream->stream,
807 SND_SOC_DAPM_STREAM_START);
ddee627c 808
0b7990e3
KM		 809 for_each_rtd_codec_dai(rtd, i, codec_dai)
810 snd_soc_dai_digital_mute(codec_dai, 0,
2e5894d7 811 substream->stream);
ae11601b 812 snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
ddee627c
LG		 813
814out:
72b745e3 815 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 816 return ret;
817}
818
2e5894d7
BC		 819static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params,
820 unsigned int mask)
821{
822 struct snd_interval *interval;
823 int channels = hweight_long(mask);
824
825 interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
826 interval->min = channels;
827 interval->max = channels;
828}
829
244e2936
CK		 830static int soc_pcm_components_hw_free(struct snd_pcm_substream *substream,
831 struct snd_soc_component *last)
832{
833 struct snd_soc_pcm_runtime *rtd = substream->private_data;
834 struct snd_soc_rtdcom_list *rtdcom;
835 struct snd_soc_component *component;
eae7136a 836 int ret = 0;
244e2936 837
2b544dd7 838 for_each_rtd_components(rtd, rtdcom, component) {
244e2936
CK		 839 if (component == last)
840 break;
841
eae7136a 842 ret |= snd_soc_component_hw_free(component, substream);
244e2936
CK		 843 }
844
eae7136a 845 return ret;
244e2936
CK		 846}
847
ddee627c
LG		 848/*
849 * Called by ALSA when the hardware params are set by application. This
850 * function can also be called multiple times and can allocate buffers
851 * (using snd_pcm_lib_* ). It's non-atomic.
852 */
853static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
854 struct snd_pcm_hw_params *params)
855{
856 struct snd_soc_pcm_runtime *rtd = substream->private_data;
b8135864
KM		 857 struct snd_soc_component *component;
858 struct snd_soc_rtdcom_list *rtdcom;
ddee627c 859 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
0b7990e3 860 struct snd_soc_dai *codec_dai;
244e2936 861 int i, ret = 0;
ddee627c 862
72b745e3 863 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
75ab9eb6 864 if (rtd->dai_link->ops->hw_params) {
ddee627c
LG		 865 ret = rtd->dai_link->ops->hw_params(substream, params);
866 if (ret < 0) {
103d84a3
LG		 867 dev_err(rtd->card->dev, "ASoC: machine hw_params"
868 " failed: %d\n", ret);
ddee627c
LG		 869 goto out;
870 }
871 }
872
0b7990e3 873 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2e5894d7
BC		 874 struct snd_pcm_hw_params codec_params;
875
cde79035
RW		 876 /*
877 * Skip CODECs which don't support the current stream type,
878 * the idea being that if a CODEC is not used for the currently
879 * set up transfer direction, it should not need to be
880 * configured, especially since the configuration used might
881 * not even be supported by that CODEC. There may be cases
882 * however where a CODEC needs to be set up although it is
883 * actually not being used for the transfer, e.g. if a
884 * capture-only CODEC is acting as an LRCLK and/or BCLK master
885 * for the DAI link including a playback-only CODEC.
886 * If this becomes necessary, we will have to augment the
887 * machine driver setup with information on how to act, so
888 * we can do the right thing here.
889 */
890 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
891 continue;
892
2e5894d7
BC		 893 /* copy params for each codec */
894 codec_params = *params;
895
896 /* fixup params based on TDM slot masks */
570f18b6
RW		 897 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
898 codec_dai->tx_mask)
2e5894d7
BC		 899 soc_pcm_codec_params_fixup(&codec_params,
900 codec_dai->tx_mask);
570f18b6
RW		 901
902 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
903 codec_dai->rx_mask)
2e5894d7
BC		 904 soc_pcm_codec_params_fixup(&codec_params,
905 codec_dai->rx_mask);
906
aa6166c2
KM		 907 ret = snd_soc_dai_hw_params(codec_dai, substream,
908 &codec_params);
93e6958a 909 if(ret < 0)
ddee627c 910 goto codec_err;
ddee627c 911
2e5894d7
BC		 912 codec_dai->rate = params_rate(&codec_params);
913 codec_dai->channels = params_channels(&codec_params);
914 codec_dai->sample_bits = snd_pcm_format_physical_width(
915 params_format(&codec_params));
078a85f2
CK		 916
917 snd_soc_dapm_update_dai(substream, &codec_params, codec_dai);
ddee627c
LG		 918 }
919
aa6166c2 920 ret = snd_soc_dai_hw_params(cpu_dai, substream, params);
93e6958a
BC		 921 if (ret < 0)
922 goto interface_err;
ddee627c 923
ca58221d
KM		 924 /* store the parameters for each DAIs */
925 cpu_dai->rate = params_rate(params);
926 cpu_dai->channels = params_channels(params);
927 cpu_dai->sample_bits =
928 snd_pcm_format_physical_width(params_format(params));
929
930 snd_soc_dapm_update_dai(substream, params, cpu_dai);
931
2b544dd7 932 for_each_rtd_components(rtd, rtdcom, component) {
245c539a 933 ret = snd_soc_component_hw_params(component, substream, params);
244e2936 934 if (ret < 0) {
b8135864
KM		 935 dev_err(component->dev,
936 "ASoC: %s hw params failed: %d\n",
244e2936
CK		 937 component->name, ret);
938 goto component_err;
b8135864
KM		 939 }
940 }
244e2936 941 component = NULL;
b8135864 942
957ce0c6 943 ret = soc_pcm_params_symmetry(substream, params);
944 if (ret)
b8135864 945 goto component_err;
ddee627c 946out:
72b745e3 947 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 948 return ret;
949
b8135864 950component_err:
244e2936 951 soc_pcm_components_hw_free(substream, component);
b8135864 952
846faaed 953 snd_soc_dai_hw_free(cpu_dai, substream);
2371abdc 954 cpu_dai->rate = 0;
ddee627c
LG		 955
956interface_err:
2e5894d7 957 i = rtd->num_codecs;
ddee627c
LG		 958
959codec_err:
6d11b128 960 for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) {
f47b9ad9
JB		 961 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
962 continue;
963
846faaed 964 snd_soc_dai_hw_free(codec_dai, substream);
2e5894d7
BC		 965 codec_dai->rate = 0;
966 }
967
75ab9eb6 968 if (rtd->dai_link->ops->hw_free)
ddee627c
LG		 969 rtd->dai_link->ops->hw_free(substream);
970
72b745e3 971 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 972 return ret;
973}
974
975/*
976 * Frees resources allocated by hw_params, can be called multiple times
977 */
978static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
979{
980 struct snd_soc_pcm_runtime *rtd = substream->private_data;
ddee627c 981 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 982 struct snd_soc_dai *codec_dai;
7f62b6ee 983 bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
2e5894d7 984 int i;
ddee627c 985
72b745e3 986 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ddee627c 987
d3383420
NC		 988 /* clear the corresponding DAIs parameters when going to be inactive */
989 if (cpu_dai->active == 1) {
990 cpu_dai->rate = 0;
991 cpu_dai->channels = 0;
992 cpu_dai->sample_bits = 0;
993 }
994
0b7990e3 995 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2e5894d7
BC		 996 if (codec_dai->active == 1) {
997 codec_dai->rate = 0;
998 codec_dai->channels = 0;
999 codec_dai->sample_bits = 0;
1000 }
d3383420
NC		 1001 }
1002
ddee627c 1003 /* apply codec digital mute */
0b7990e3
KM		 1004 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1005 if ((playback && codec_dai->playback_active == 1) ||
1006 (!playback && codec_dai->capture_active == 1))
1007 snd_soc_dai_digital_mute(codec_dai, 1,
2e5894d7
BC		 1008 substream->stream);
1009 }
ddee627c
LG		 1010
1011 /* free any machine hw params */
75ab9eb6 1012 if (rtd->dai_link->ops->hw_free)
ddee627c
LG		 1013 rtd->dai_link->ops->hw_free(substream);
1014
b8135864 1015 /* free any component resources */
244e2936 1016 soc_pcm_components_hw_free(substream, NULL);
b8135864 1017
ddee627c 1018 /* now free hw params for the DAIs */
0b7990e3 1019 for_each_rtd_codec_dai(rtd, i, codec_dai) {
f47b9ad9
JB		 1020 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
1021 continue;
1022
846faaed 1023 snd_soc_dai_hw_free(codec_dai, substream);
2e5894d7 1024 }
ddee627c 1025
846faaed 1026 snd_soc_dai_hw_free(cpu_dai, substream);
ddee627c 1027
72b745e3 1028 mutex_unlock(&rtd->card->pcm_mutex);
ddee627c
LG		 1029 return 0;
1030}
1031
4378f1fb 1032static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd)
ddee627c
LG		 1033{
1034 struct snd_soc_pcm_runtime *rtd = substream->private_data;
b8135864
KM		 1035 struct snd_soc_component *component;
1036 struct snd_soc_rtdcom_list *rtdcom;
ddee627c 1037 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 1038 struct snd_soc_dai *codec_dai;
1039 int i, ret;
1040
4378f1fb
PU		 1041 if (rtd->dai_link->ops->trigger) {
1042 ret = rtd->dai_link->ops->trigger(substream, cmd);
95aef355
KM		 1043 if (ret < 0)
1044 return ret;
ddee627c
LG		 1045 }
1046
2b544dd7 1047 for_each_rtd_components(rtd, rtdcom, component) {
5693d50c 1048 ret = snd_soc_component_trigger(component, substream, cmd);
b8135864
KM		 1049 if (ret < 0)
1050 return ret;
1051 }
1052
901e822b 1053 ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
95aef355
KM		 1054 if (ret < 0)
1055 return ret;
4792b0db 1056
4378f1fb
PU		 1057 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1058 ret = snd_soc_dai_trigger(codec_dai, substream, cmd);
1059 if (ret < 0)
1060 return ret;
1061 }
1062
1063 return 0;
1064}
1065
1066static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd)
1067{
1068 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1069 struct snd_soc_component *component;
1070 struct snd_soc_rtdcom_list *rtdcom;
1071 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1072 struct snd_soc_dai *codec_dai;
1073 int i, ret;
1074
1075 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1076 ret = snd_soc_dai_trigger(codec_dai, substream, cmd);
1077 if (ret < 0)
1078 return ret;
1079 }
1080
1081 ret = snd_soc_dai_trigger(cpu_dai, substream, cmd);
1082 if (ret < 0)
1083 return ret;
1084
2b544dd7 1085 for_each_rtd_components(rtd, rtdcom, component) {
4378f1fb
PU		 1086 ret = snd_soc_component_trigger(component, substream, cmd);
1087 if (ret < 0)
1088 return ret;
1089 }
1090
75ab9eb6 1091 if (rtd->dai_link->ops->trigger) {
4792b0db
JN		 1092 ret = rtd->dai_link->ops->trigger(substream, cmd);
1093 if (ret < 0)
1094 return ret;
1095 }
1096
ddee627c
LG		 1097 return 0;
1098}
1099
4378f1fb
PU		 1100static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1101{
1102 int ret;
1103
1104 switch (cmd) {
1105 case SNDRV_PCM_TRIGGER_START:
1106 case SNDRV_PCM_TRIGGER_RESUME:
1107 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1108 ret = soc_pcm_trigger_start(substream, cmd);
1109 break;
1110 case SNDRV_PCM_TRIGGER_STOP:
1111 case SNDRV_PCM_TRIGGER_SUSPEND:
1112 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1113 ret = soc_pcm_trigger_stop(substream, cmd);
1114 break;
1115 default:
1116 return -EINVAL;
1117 }
1118
1119 return ret;
1120}
1121
45c0a188
MB		 1122static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
1123 int cmd)
07bf84aa
LG		 1124{
1125 struct snd_soc_pcm_runtime *rtd = substream->private_data;
07bf84aa 1126 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7
BC		 1127 struct snd_soc_dai *codec_dai;
1128 int i, ret;
1129
0b7990e3 1130 for_each_rtd_codec_dai(rtd, i, codec_dai) {
5c0769af 1131 ret = snd_soc_dai_bespoke_trigger(codec_dai, substream, cmd);
07bf84aa
LG		 1132 if (ret < 0)
1133 return ret;
1134 }
5c0769af 1135
901e822b 1136 ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd);
5c0769af
KM		 1137 if (ret < 0)
1138 return ret;
1139
07bf84aa
LG		 1140 return 0;
1141}
ddee627c
LG		 1142/*
1143 * soc level wrapper for pointer callback
ef050bec 1144 * If cpu_dai, codec_dai, component driver has the delay callback, then
ddee627c
LG		 1145 * the runtime->delay will be updated accordingly.
1146 */
1147static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1148{
1149 struct snd_soc_pcm_runtime *rtd = substream->private_data;
ddee627c 1150 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2e5894d7 1151 struct snd_soc_dai *codec_dai;
ddee627c
LG		 1152 struct snd_pcm_runtime *runtime = substream->runtime;
1153 snd_pcm_uframes_t offset = 0;
1154 snd_pcm_sframes_t delay = 0;
2e5894d7
BC		 1155 snd_pcm_sframes_t codec_delay = 0;
1156 int i;
ddee627c 1157
9fb4c2bf
AA		 1158 /* clearing the previous total delay */
1159 runtime->delay = 0;
1160
0035e256 1161 offset = snd_soc_pcm_component_pointer(substream);
b8135864 1162
9fb4c2bf
AA		 1163 /* base delay if assigned in pointer callback */
1164 delay = runtime->delay;
b8135864 1165
1dea80d4 1166 delay += snd_soc_dai_delay(cpu_dai, substream);
ddee627c 1167
0b7990e3 1168 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1dea80d4
KM		 1169 codec_delay = max(codec_delay,
1170 snd_soc_dai_delay(codec_dai, substream));
2e5894d7
BC		 1171 }
1172 delay += codec_delay;
ddee627c 1173
ddee627c
LG		 1174 runtime->delay = delay;
1175
1176 return offset;
1177}
1178
01d7584c
LG		 1179/* connect a FE and BE */
1180static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1181 struct snd_soc_pcm_runtime *be, int stream)
1182{
1183 struct snd_soc_dpcm *dpcm;
a9764869 1184 unsigned long flags;
bd0b609e 1185#ifdef CONFIG_DEBUG_FS
0632fa04 1186 char *name;
bd0b609e 1187#endif
01d7584c
LG		 1188
1189 /* only add new dpcms */
8d6258a4 1190 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1191 if (dpcm->be == be && dpcm->fe == fe)
1192 return 0;
1193 }
1194
1195 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
1196 if (!dpcm)
1197 return -ENOMEM;
1198
1199 dpcm->be = be;
1200 dpcm->fe = fe;
1201 be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
1202 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
a9764869 1203 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
01d7584c
LG		 1204 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1205 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
a9764869 1206 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
01d7584c 1207
7cc302d2 1208 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
01d7584c
LG		 1209 stream ? "capture" : "playback", fe->dai_link->name,
1210 stream ? "<-" : "->", be->dai_link->name);
1211
f86dcef8 1212#ifdef CONFIG_DEBUG_FS
0632fa04
HG		 1213 name = kasprintf(GFP_KERNEL, "%s:%s", be->dai_link->name,
1214 stream ? "capture" : "playback");
1215 if (name) {
1216 dpcm->debugfs_state = debugfs_create_dir(name,
1217 fe->debugfs_dpcm_root);
1218 debugfs_create_u32("state", 0644, dpcm->debugfs_state,
1219 &dpcm->state);
1220 kfree(name);
1221 }
f86dcef8 1222#endif
01d7584c
LG		 1223 return 1;
1224}
1225
1226/* reparent a BE onto another FE */
1227static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1228 struct snd_soc_pcm_runtime *be, int stream)
1229{
1230 struct snd_soc_dpcm *dpcm;
1231 struct snd_pcm_substream *fe_substream, *be_substream;
1232
1233 /* reparent if BE is connected to other FEs */
1234 if (!be->dpcm[stream].users)
1235 return;
1236
1237 be_substream = snd_soc_dpcm_get_substream(be, stream);
1238
d2e24d64 1239 for_each_dpcm_fe(be, stream, dpcm) {
01d7584c
LG		 1240 if (dpcm->fe == fe)
1241 continue;
1242
7cc302d2 1243 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
01d7584c
LG		 1244 stream ? "capture" : "playback",
1245 dpcm->fe->dai_link->name,
1246 stream ? "<-" : "->", dpcm->be->dai_link->name);
1247
1248 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1249 be_substream->runtime = fe_substream->runtime;
1250 break;
1251 }
1252}
1253
1254/* disconnect a BE and FE */
23607025 1255void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1256{
1257 struct snd_soc_dpcm *dpcm, *d;
a9764869 1258 unsigned long flags;
01d7584c 1259
8d6258a4 1260 for_each_dpcm_be_safe(fe, stream, dpcm, d) {
103d84a3 1261 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
01d7584c
LG		 1262 stream ? "capture" : "playback",
1263 dpcm->be->dai_link->name);
1264
1265 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1266 continue;
1267
7cc302d2 1268 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
01d7584c
LG		 1269 stream ? "capture" : "playback", fe->dai_link->name,
1270 stream ? "<-" : "->", dpcm->be->dai_link->name);
1271
1272 /* BEs still alive need new FE */
1273 dpcm_be_reparent(fe, dpcm->be, stream);
1274
f86dcef8 1275#ifdef CONFIG_DEBUG_FS
fee531d6 1276 debugfs_remove_recursive(dpcm->debugfs_state);
f86dcef8 1277#endif
a9764869 1278 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
01d7584c
LG		 1279 list_del(&dpcm->list_be);
1280 list_del(&dpcm->list_fe);
a9764869 1281 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
01d7584c
LG		 1282 kfree(dpcm);
1283 }
1284}
1285
1286/* get BE for DAI widget and stream */
1287static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1288 struct snd_soc_dapm_widget *widget, int stream)
1289{
1290 struct snd_soc_pcm_runtime *be;
7afecb30 1291 struct snd_soc_dai *dai;
1a497983 1292 int i;
01d7584c 1293
3c146465
LG		 1294 dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);
1295
01d7584c 1296 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
bcb1fd1f 1297 for_each_card_rtds(card, be) {
01d7584c 1298
35ea0655
LG		 1299 if (!be->dai_link->no_pcm)
1300 continue;
1301
3c146465
LG		 1302 dev_dbg(card->dev, "ASoC: try BE : %s\n",
1303 be->cpu_dai->playback_widget ?
1304 be->cpu_dai->playback_widget->name : "(not set)");
1305
2e5894d7 1306 if (be->cpu_dai->playback_widget == widget)
01d7584c 1307 return be;
2e5894d7 1308
7afecb30 1309 for_each_rtd_codec_dai(be, i, dai) {
2e5894d7
BC		 1310 if (dai->playback_widget == widget)
1311 return be;
1312 }
01d7584c
LG		 1313 }
1314 } else {
1315
bcb1fd1f 1316 for_each_card_rtds(card, be) {
01d7584c 1317
35ea0655
LG		 1318 if (!be->dai_link->no_pcm)
1319 continue;
1320
3c146465
LG		 1321 dev_dbg(card->dev, "ASoC: try BE %s\n",
1322 be->cpu_dai->capture_widget ?
1323 be->cpu_dai->capture_widget->name : "(not set)");
1324
2e5894d7 1325 if (be->cpu_dai->capture_widget == widget)
01d7584c 1326 return be;
2e5894d7 1327
7afecb30 1328 for_each_rtd_codec_dai(be, i, dai) {
2e5894d7
BC		 1329 if (dai->capture_widget == widget)
1330 return be;
1331 }
01d7584c
LG		 1332 }
1333 }
1334
3c146465 1335 /* dai link name and stream name set correctly ? */
103d84a3 1336 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
01d7584c
LG		 1337 stream ? "capture" : "playback", widget->name);
1338 return NULL;
1339}
1340
1341static inline struct snd_soc_dapm_widget *
37018610 1342 dai_get_widget(struct snd_soc_dai *dai, int stream)
01d7584c
LG		 1343{
1344 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
37018610 1345 return dai->playback_widget;
01d7584c 1346 else
37018610 1347 return dai->capture_widget;
01d7584c
LG		 1348}
1349
1350static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1351 struct snd_soc_dapm_widget *widget)
1352{
1353 int i;
1354
1355 for (i = 0; i < list->num_widgets; i++) {
1356 if (widget == list->widgets[i])
1357 return 1;
1358 }
1359
1360 return 0;
1361}
1362
5fdd022c
PS		 1363static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
1364 enum snd_soc_dapm_direction dir)
1365{
1366 struct snd_soc_card *card = widget->dapm->card;
1367 struct snd_soc_pcm_runtime *rtd;
0b7990e3 1368 struct snd_soc_dai *dai;
5fdd022c
PS		 1369 int i;
1370
1371 if (dir == SND_SOC_DAPM_DIR_OUT) {
bcb1fd1f 1372 for_each_card_rtds(card, rtd) {
5fdd022c
PS		 1373 if (!rtd->dai_link->no_pcm)
1374 continue;
1375
1376 if (rtd->cpu_dai->playback_widget == widget)
1377 return true;
1378
0b7990e3 1379 for_each_rtd_codec_dai(rtd, i, dai) {
5fdd022c
PS		 1380 if (dai->playback_widget == widget)
1381 return true;
1382 }
1383 }
1384 } else { /* SND_SOC_DAPM_DIR_IN */
bcb1fd1f 1385 for_each_card_rtds(card, rtd) {
5fdd022c
PS		 1386 if (!rtd->dai_link->no_pcm)
1387 continue;
1388
1389 if (rtd->cpu_dai->capture_widget == widget)
1390 return true;
1391
0b7990e3 1392 for_each_rtd_codec_dai(rtd, i, dai) {
5fdd022c
PS		 1393 if (dai->capture_widget == widget)
1394 return true;
1395 }
1396 }
1397 }
1398
1399 return false;
1400}
1401
23607025 1402int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
1ce43acf 1403 int stream, struct snd_soc_dapm_widget_list **list)
01d7584c
LG		 1404{
1405 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
01d7584c
LG		 1406 int paths;
1407
01d7584c 1408 /* get number of valid DAI paths and their widgets */
6742064a 1409 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
5fdd022c 1410 dpcm_end_walk_at_be);
01d7584c 1411
103d84a3 1412 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
01d7584c
LG		 1413 stream ? "capture" : "playback");
1414
01d7584c
LG		 1415 return paths;
1416}
1417
01d7584c
LG		 1418static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1419 struct snd_soc_dapm_widget_list **list_)
1420{
1421 struct snd_soc_dpcm *dpcm;
1422 struct snd_soc_dapm_widget_list *list = *list_;
1423 struct snd_soc_dapm_widget *widget;
7afecb30 1424 struct snd_soc_dai *dai;
01d7584c 1425 int prune = 0;
bed646dc 1426 int do_prune;
01d7584c
LG		 1427
1428 /* Destroy any old FE <--> BE connections */
8d6258a4 1429 for_each_dpcm_be(fe, stream, dpcm) {
2e5894d7 1430 unsigned int i;
01d7584c
LG		 1431
1432 /* is there a valid CPU DAI widget for this BE */
37018610 1433 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
01d7584c
LG		 1434
1435 /* prune the BE if it's no longer in our active list */
1436 if (widget && widget_in_list(list, widget))
1437 continue;
1438
1439 /* is there a valid CODEC DAI widget for this BE */
bed646dc 1440 do_prune = 1;
7afecb30 1441 for_each_rtd_codec_dai(dpcm->be, i, dai) {
2e5894d7 1442 widget = dai_get_widget(dai, stream);
01d7584c 1443
2e5894d7
BC		 1444 /* prune the BE if it's no longer in our active list */
1445 if (widget && widget_in_list(list, widget))
bed646dc 1446 do_prune = 0;
2e5894d7 1447 }
bed646dc
KM		 1448 if (!do_prune)
1449 continue;
01d7584c 1450
103d84a3 1451 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
01d7584c
LG		 1452 stream ? "capture" : "playback",
1453 dpcm->be->dai_link->name, fe->dai_link->name);
1454 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1455 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1456 prune++;
1457 }
1458
103d84a3 1459 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
01d7584c
LG		 1460 return prune;
1461}
1462
1463static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1464 struct snd_soc_dapm_widget_list **list_)
1465{
1466 struct snd_soc_card *card = fe->card;
1467 struct snd_soc_dapm_widget_list *list = *list_;
1468 struct snd_soc_pcm_runtime *be;
1469 int i, new = 0, err;
1470
1471 /* Create any new FE <--> BE connections */
1472 for (i = 0; i < list->num_widgets; i++) {
1473
4616274d
MB		 1474 switch (list->widgets[i]->id) {
1475 case snd_soc_dapm_dai_in:
c5b8540d
KC		 1476 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
1477 continue;
1478 break;
4616274d 1479 case snd_soc_dapm_dai_out:
c5b8540d
KC		 1480 if (stream != SNDRV_PCM_STREAM_CAPTURE)
1481 continue;
4616274d
MB		 1482 break;
1483 default:
01d7584c 1484 continue;
4616274d 1485 }
01d7584c
LG		 1486
1487 /* is there a valid BE rtd for this widget */
1488 be = dpcm_get_be(card, list->widgets[i], stream);
1489 if (!be) {
103d84a3 1490 dev_err(fe->dev, "ASoC: no BE found for %s\n",
01d7584c
LG		 1491 list->widgets[i]->name);
1492 continue;
1493 }
1494
1495 /* make sure BE is a real BE */
1496 if (!be->dai_link->no_pcm)
1497 continue;
1498
1499 /* don't connect if FE is not running */
23607025 1500 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
01d7584c
LG		 1501 continue;
1502
1503 /* newly connected FE and BE */
1504 err = dpcm_be_connect(fe, be, stream);
1505 if (err < 0) {
103d84a3 1506 dev_err(fe->dev, "ASoC: can't connect %s\n",
01d7584c
LG		 1507 list->widgets[i]->name);
1508 break;
1509 } else if (err == 0) /* already connected */
1510 continue;
1511
1512 /* new */
1513 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1514 new++;
1515 }
1516
103d84a3 1517 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
01d7584c
LG		 1518 return new;
1519}
1520
1521/*
1522 * Find the corresponding BE DAIs that source or sink audio to this
1523 * FE substream.
1524 */
23607025 1525int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1526 int stream, struct snd_soc_dapm_widget_list **list, int new)
1527{
1528 if (new)
1529 return dpcm_add_paths(fe, stream, list);
1530 else
1531 return dpcm_prune_paths(fe, stream, list);
1532}
1533
23607025 1534void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1535{
1536 struct snd_soc_dpcm *dpcm;
a9764869 1537 unsigned long flags;
01d7584c 1538
a9764869 1539 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
8d6258a4 1540 for_each_dpcm_be(fe, stream, dpcm)
01d7584c
LG		 1541 dpcm->be->dpcm[stream].runtime_update =
1542 SND_SOC_DPCM_UPDATE_NO;
a9764869 1543 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
01d7584c
LG		 1544}
1545
1546static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1547 int stream)
1548{
1549 struct snd_soc_dpcm *dpcm;
1550
1551 /* disable any enabled and non active backends */
8d6258a4 1552 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1553
1554 struct snd_soc_pcm_runtime *be = dpcm->be;
1555 struct snd_pcm_substream *be_substream =
1556 snd_soc_dpcm_get_substream(be, stream);
1557
1558 if (be->dpcm[stream].users == 0)
103d84a3 1559 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1560 stream ? "capture" : "playback",
1561 be->dpcm[stream].state);
1562
1563 if (--be->dpcm[stream].users != 0)
1564 continue;
1565
1566 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1567 continue;
1568
1569 soc_pcm_close(be_substream);
1570 be_substream->runtime = NULL;
1571 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1572 }
1573}
1574
23607025 1575int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1576{
1577 struct snd_soc_dpcm *dpcm;
1578 int err, count = 0;
1579
1580 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
8d6258a4 1581 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1582
1583 struct snd_soc_pcm_runtime *be = dpcm->be;
1584 struct snd_pcm_substream *be_substream =
1585 snd_soc_dpcm_get_substream(be, stream);
1586
2062b4c5
RKAL		 1587 if (!be_substream) {
1588 dev_err(be->dev, "ASoC: no backend %s stream\n",
1589 stream ? "capture" : "playback");
1590 continue;
1591 }
1592
01d7584c
LG		 1593 /* is this op for this BE ? */
1594 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1595 continue;
1596
1597 /* first time the dpcm is open ? */
1598 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
103d84a3 1599 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
01d7584c
LG		 1600 stream ? "capture" : "playback",
1601 be->dpcm[stream].state);
1602
1603 if (be->dpcm[stream].users++ != 0)
1604 continue;
1605
1606 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1607 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1608 continue;
1609
2062b4c5
RKAL		 1610 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1611 stream ? "capture" : "playback", be->dai_link->name);
01d7584c
LG		 1612
1613 be_substream->runtime = be->dpcm[stream].runtime;
1614 err = soc_pcm_open(be_substream);
1615 if (err < 0) {
103d84a3 1616 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
01d7584c
LG		 1617 be->dpcm[stream].users--;
1618 if (be->dpcm[stream].users < 0)
103d84a3 1619 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
01d7584c
LG		 1620 stream ? "capture" : "playback",
1621 be->dpcm[stream].state);
1622
1623 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1624 goto unwind;
1625 }
1626
1627 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1628 count++;
1629 }
1630
1631 return count;
1632
1633unwind:
1634 /* disable any enabled and non active backends */
8d6258a4 1635 for_each_dpcm_be_rollback(fe, stream, dpcm) {
01d7584c
LG		 1636 struct snd_soc_pcm_runtime *be = dpcm->be;
1637 struct snd_pcm_substream *be_substream =
1638 snd_soc_dpcm_get_substream(be, stream);
1639
1640 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1641 continue;
1642
1643 if (be->dpcm[stream].users == 0)
103d84a3 1644 dev_err(be->dev, "ASoC: no users %s at close %d\n",
01d7584c
LG		 1645 stream ? "capture" : "playback",
1646 be->dpcm[stream].state);
1647
1648 if (--be->dpcm[stream].users != 0)
1649 continue;
1650
1651 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1652 continue;
1653
1654 soc_pcm_close(be_substream);
1655 be_substream->runtime = NULL;
1656 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1657 }
1658
1659 return err;
1660}
1661
08ae9b45 1662static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
435ffb76 1663 struct snd_soc_pcm_stream *stream)
08ae9b45
LPC		 1664{
1665 runtime->hw.rate_min = stream->rate_min;
e33ffbd9 1666 runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX);
08ae9b45
LPC		 1667 runtime->hw.channels_min = stream->channels_min;
1668 runtime->hw.channels_max = stream->channels_max;
002220a9 1669 if (runtime->hw.formats)
435ffb76 1670 runtime->hw.formats &= stream->formats;
002220a9 1671 else
435ffb76 1672 runtime->hw.formats = stream->formats;
08ae9b45
LPC		 1673 runtime->hw.rates = stream->rates;
1674}
1675
435ffb76
JB		 1676static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream,
1677 u64 *formats)
b073ed4e
KM		 1678{
1679 struct snd_soc_pcm_runtime *fe = substream->private_data;
1680 struct snd_soc_dpcm *dpcm;
7afecb30 1681 struct snd_soc_dai *dai;
b073ed4e
KM		 1682 int stream = substream->stream;
1683
1684 if (!fe->dai_link->dpcm_merged_format)
435ffb76 1685 return;
b073ed4e
KM		 1686
1687 /*
1688 * It returns merged BE codec format
1689 * if FE want to use it (= dpcm_merged_format)
1690 */
1691
8d6258a4 1692 for_each_dpcm_be(fe, stream, dpcm) {
b073ed4e
KM		 1693 struct snd_soc_pcm_runtime *be = dpcm->be;
1694 struct snd_soc_dai_driver *codec_dai_drv;
1695 struct snd_soc_pcm_stream *codec_stream;
1696 int i;
1697
7afecb30 1698 for_each_rtd_codec_dai(be, i, dai) {
4febced1
JB		 1699 /*
1700 * Skip CODECs which don't support the current stream
1701 * type. See soc_pcm_init_runtime_hw() for more details
1702 */
7afecb30 1703 if (!snd_soc_dai_stream_valid(dai, stream))
4febced1
JB		 1704 continue;
1705
7afecb30 1706 codec_dai_drv = dai->driver;
b073ed4e
KM		 1707 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1708 codec_stream = &codec_dai_drv->playback;
1709 else
1710 codec_stream = &codec_dai_drv->capture;
1711
435ffb76 1712 *formats &= codec_stream->formats;
b073ed4e
KM		 1713 }
1714 }
b073ed4e
KM		 1715}
1716
435ffb76
JB		 1717static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
1718 unsigned int *channels_min,
1719 unsigned int *channels_max)
f4c277b8
JW		 1720{
1721 struct snd_soc_pcm_runtime *fe = substream->private_data;
1722 struct snd_soc_dpcm *dpcm;
1723 int stream = substream->stream;
1724
1725 if (!fe->dai_link->dpcm_merged_chan)
1726 return;
1727
f4c277b8
JW		 1728 /*
1729 * It returns merged BE codec channel;
1730 * if FE want to use it (= dpcm_merged_chan)
1731 */
1732
8d6258a4 1733 for_each_dpcm_be(fe, stream, dpcm) {
f4c277b8 1734 struct snd_soc_pcm_runtime *be = dpcm->be;
4f2bd18b 1735 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
f4c277b8
JW		 1736 struct snd_soc_dai_driver *codec_dai_drv;
1737 struct snd_soc_pcm_stream *codec_stream;
4f2bd18b
JB		 1738 struct snd_soc_pcm_stream *cpu_stream;
1739
1740 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1741 cpu_stream = &cpu_dai_drv->playback;
1742 else
1743 cpu_stream = &cpu_dai_drv->capture;
1744
1745 *channels_min = max(*channels_min, cpu_stream->channels_min);
1746 *channels_max = min(*channels_max, cpu_stream->channels_max);
1747
1748 /*
1749 * chan min/max cannot be enforced if there are multiple CODEC
1750 * DAIs connected to a single CPU DAI, use CPU DAI's directly
1751 */
1752 if (be->num_codecs == 1) {
1753 codec_dai_drv = be->codec_dais[0]->driver;
f4c277b8 1754
f4c277b8
JW		 1755 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1756 codec_stream = &codec_dai_drv->playback;
1757 else
1758 codec_stream = &codec_dai_drv->capture;
1759
1760 *channels_min = max(*channels_min,
1761 codec_stream->channels_min);
1762 *channels_max = min(*channels_max,
1763 codec_stream->channels_max);
1764 }
1765 }
1766}
1767
baacd8d1
JB		 1768static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream,
1769 unsigned int *rates,
1770 unsigned int *rate_min,
1771 unsigned int *rate_max)
1772{
1773 struct snd_soc_pcm_runtime *fe = substream->private_data;
1774 struct snd_soc_dpcm *dpcm;
1775 int stream = substream->stream;
1776
1777 if (!fe->dai_link->dpcm_merged_rate)
1778 return;
1779
1780 /*
1781 * It returns merged BE codec channel;
1782 * if FE want to use it (= dpcm_merged_chan)
1783 */
1784
8d6258a4 1785 for_each_dpcm_be(fe, stream, dpcm) {
baacd8d1
JB		 1786 struct snd_soc_pcm_runtime *be = dpcm->be;
1787 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
1788 struct snd_soc_dai_driver *codec_dai_drv;
1789 struct snd_soc_pcm_stream *codec_stream;
1790 struct snd_soc_pcm_stream *cpu_stream;
7afecb30 1791 struct snd_soc_dai *dai;
baacd8d1
JB		 1792 int i;
1793
1794 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1795 cpu_stream = &cpu_dai_drv->playback;
1796 else
1797 cpu_stream = &cpu_dai_drv->capture;
1798
1799 *rate_min = max(*rate_min, cpu_stream->rate_min);
1800 *rate_max = min_not_zero(*rate_max, cpu_stream->rate_max);
1801 *rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates);
1802
7afecb30 1803 for_each_rtd_codec_dai(be, i, dai) {
baacd8d1
JB		 1804 /*
1805 * Skip CODECs which don't support the current stream
1806 * type. See soc_pcm_init_runtime_hw() for more details
1807 */
7afecb30 1808 if (!snd_soc_dai_stream_valid(dai, stream))
baacd8d1
JB		 1809 continue;
1810
7afecb30 1811 codec_dai_drv = dai->driver;
baacd8d1
JB		 1812 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1813 codec_stream = &codec_dai_drv->playback;
1814 else
1815 codec_stream = &codec_dai_drv->capture;
1816
1817 *rate_min = max(*rate_min, codec_stream->rate_min);
1818 *rate_max = min_not_zero(*rate_max,
1819 codec_stream->rate_max);
1820 *rates = snd_pcm_rate_mask_intersect(*rates,
1821 codec_stream->rates);
1822 }
1823 }
1824}
1825
45c0a188 1826static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
01d7584c
LG		 1827{
1828 struct snd_pcm_runtime *runtime = substream->runtime;
1829 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1830 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1831 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1832
08ae9b45 1833 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
435ffb76 1834 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
08ae9b45 1835 else
435ffb76 1836 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
f4c277b8 1837
435ffb76
JB		 1838 dpcm_runtime_merge_format(substream, &runtime->hw.formats);
1839 dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min,
1840 &runtime->hw.channels_max);
baacd8d1
JB		 1841 dpcm_runtime_merge_rate(substream, &runtime->hw.rates,
1842 &runtime->hw.rate_min, &runtime->hw.rate_max);
01d7584c
LG		 1843}
1844
ea9d0d77
TI		 1845static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1846
1847/* Set FE's runtime_update state; the state is protected via PCM stream lock
1848 * for avoiding the race with trigger callback.
1849 * If the state is unset and a trigger is pending while the previous operation,
1850 * process the pending trigger action here.
1851 */
1852static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1853 int stream, enum snd_soc_dpcm_update state)
1854{
1855 struct snd_pcm_substream *substream =
1856 snd_soc_dpcm_get_substream(fe, stream);
1857
1858 snd_pcm_stream_lock_irq(substream);
1859 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1860 dpcm_fe_dai_do_trigger(substream,
1861 fe->dpcm[stream].trigger_pending - 1);
1862 fe->dpcm[stream].trigger_pending = 0;
1863 }
1864 fe->dpcm[stream].runtime_update = state;
1865 snd_pcm_stream_unlock_irq(substream);
1866}
1867
906c7d69
PL		 1868static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
1869 int stream)
1870{
1871 struct snd_soc_dpcm *dpcm;
1872 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1873 struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai;
1874 int err;
1875
1876 /* apply symmetry for FE */
1877 if (soc_pcm_has_symmetry(fe_substream))
1878 fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1879
1880 /* Symmetry only applies if we've got an active stream. */
1881 if (fe_cpu_dai->active) {
1882 err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
1883 if (err < 0)
1884 return err;
1885 }
1886
1887 /* apply symmetry for BE */
8d6258a4 1888 for_each_dpcm_be(fe, stream, dpcm) {
906c7d69
PL		 1889 struct snd_soc_pcm_runtime *be = dpcm->be;
1890 struct snd_pcm_substream *be_substream =
1891 snd_soc_dpcm_get_substream(be, stream);
6246f283 1892 struct snd_soc_pcm_runtime *rtd;
0b7990e3 1893 struct snd_soc_dai *codec_dai;
906c7d69
PL		 1894 int i;
1895
6246f283
JB		 1896 /* A backend may not have the requested substream */
1897 if (!be_substream)
1898 continue;
1899
1900 rtd = be_substream->private_data;
f1176614
JK		 1901 if (rtd->dai_link->be_hw_params_fixup)
1902 continue;
1903
906c7d69
PL		 1904 if (soc_pcm_has_symmetry(be_substream))
1905 be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1906
1907 /* Symmetry only applies if we've got an active stream. */
1908 if (rtd->cpu_dai->active) {
99bcedbd
KCC		 1909 err = soc_pcm_apply_symmetry(fe_substream,
1910 rtd->cpu_dai);
906c7d69
PL		 1911 if (err < 0)
1912 return err;
1913 }
1914
0b7990e3
KM		 1915 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1916 if (codec_dai->active) {
99bcedbd 1917 err = soc_pcm_apply_symmetry(fe_substream,
0b7990e3 1918 codec_dai);
906c7d69
PL		 1919 if (err < 0)
1920 return err;
1921 }
1922 }
1923 }
1924
1925 return 0;
1926}
1927
01d7584c
LG		 1928static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1929{
1930 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1931 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1932 int stream = fe_substream->stream, ret = 0;
1933
ea9d0d77 1934 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1935
1936 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1937 if (ret < 0) {
103d84a3 1938 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
01d7584c
LG		 1939 goto be_err;
1940 }
1941
103d84a3 1942 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
01d7584c
LG		 1943
1944 /* start the DAI frontend */
1945 ret = soc_pcm_open(fe_substream);
1946 if (ret < 0) {
103d84a3 1947 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
01d7584c
LG		 1948 goto unwind;
1949 }
1950
1951 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1952
1953 dpcm_set_fe_runtime(fe_substream);
1954 snd_pcm_limit_hw_rates(runtime);
1955
906c7d69
PL		 1956 ret = dpcm_apply_symmetry(fe_substream, stream);
1957 if (ret < 0) {
1958 dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n",
1959 ret);
1960 goto unwind;
1961 }
1962
ea9d0d77 1963 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1964 return 0;
1965
1966unwind:
1967 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1968be_err:
ea9d0d77 1969 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1970 return ret;
1971}
1972
23607025 1973int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1974{
1975 struct snd_soc_dpcm *dpcm;
1976
1977 /* only shutdown BEs that are either sinks or sources to this FE DAI */
8d6258a4 1978 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1979
1980 struct snd_soc_pcm_runtime *be = dpcm->be;
1981 struct snd_pcm_substream *be_substream =
1982 snd_soc_dpcm_get_substream(be, stream);
1983
1984 /* is this op for this BE ? */
1985 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1986 continue;
1987
1988 if (be->dpcm[stream].users == 0)
103d84a3 1989 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1990 stream ? "capture" : "playback",
1991 be->dpcm[stream].state);
1992
1993 if (--be->dpcm[stream].users != 0)
1994 continue;
1995
1996 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
9c0ac70a
KCC		 1997 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) {
1998 soc_pcm_hw_free(be_substream);
1999 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2000 }
01d7584c 2001
103d84a3 2002 dev_dbg(be->dev, "ASoC: close BE %s\n",
94d215cc 2003 be->dai_link->name);
01d7584c
LG		 2004
2005 soc_pcm_close(be_substream);
2006 be_substream->runtime = NULL;
2007
2008 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2009 }
2010 return 0;
2011}
2012
2013static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
2014{
2015 struct snd_soc_pcm_runtime *fe = substream->private_data;
2016 int stream = substream->stream;
2017
ea9d0d77 2018 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2019
2020 /* shutdown the BEs */
2021 dpcm_be_dai_shutdown(fe, substream->stream);
2022
103d84a3 2023 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
01d7584c
LG		 2024
2025 /* now shutdown the frontend */
2026 soc_pcm_close(substream);
2027
2028 /* run the stream event for each BE */
2029 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2030
2031 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
ea9d0d77 2032 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2033 return 0;
2034}
2035
23607025 2036int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2037{
2038 struct snd_soc_dpcm *dpcm;
2039
2040 /* only hw_params backends that are either sinks or sources
2041 * to this frontend DAI */
8d6258a4 2042 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 2043
2044 struct snd_soc_pcm_runtime *be = dpcm->be;
2045 struct snd_pcm_substream *be_substream =
2046 snd_soc_dpcm_get_substream(be, stream);
2047
2048 /* is this op for this BE ? */
2049 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2050 continue;
2051
2052 /* only free hw when no longer used - check all FEs */
2053 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2054 continue;
2055
36fba62c
QZ		 2056 /* do not free hw if this BE is used by other FE */
2057 if (be->dpcm[stream].users > 1)
2058 continue;
2059
01d7584c
LG		 2060 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2061 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2062 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
08b27848 2063 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
5e82d2be
VK		 2064 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2065 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
01d7584c
LG		 2066 continue;
2067
103d84a3 2068 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
94d215cc 2069 be->dai_link->name);
01d7584c
LG		 2070
2071 soc_pcm_hw_free(be_substream);
2072
2073 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2074 }
2075
2076 return 0;
2077}
2078
45c0a188 2079static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
01d7584c
LG		 2080{
2081 struct snd_soc_pcm_runtime *fe = substream->private_data;
2082 int err, stream = substream->stream;
2083
2084 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 2085 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 2086
103d84a3 2087 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
01d7584c
LG		 2088
2089 /* call hw_free on the frontend */
2090 err = soc_pcm_hw_free(substream);
2091 if (err < 0)
103d84a3 2092 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
01d7584c
LG		 2093 fe->dai_link->name);
2094
2095 /* only hw_params backends that are either sinks or sources
2096 * to this frontend DAI */
2097 err = dpcm_be_dai_hw_free(fe, stream);
2098
2099 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
ea9d0d77 2100 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2101
2102 mutex_unlock(&fe->card->mutex);
2103 return 0;
2104}
2105
23607025 2106int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2107{
2108 struct snd_soc_dpcm *dpcm;
2109 int ret;
2110
8d6258a4 2111 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 2112
2113 struct snd_soc_pcm_runtime *be = dpcm->be;
2114 struct snd_pcm_substream *be_substream =
2115 snd_soc_dpcm_get_substream(be, stream);
2116
2117 /* is this op for this BE ? */
2118 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2119 continue;
2120
01d7584c
LG		 2121 /* copy params for each dpcm */
2122 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
2123 sizeof(struct snd_pcm_hw_params));
2124
2125 /* perform any hw_params fixups */
2126 if (be->dai_link->be_hw_params_fixup) {
2127 ret = be->dai_link->be_hw_params_fixup(be,
2128 &dpcm->hw_params);
2129 if (ret < 0) {
2130 dev_err(be->dev,
103d84a3 2131 "ASoC: hw_params BE fixup failed %d\n",
01d7584c
LG		 2132 ret);
2133 goto unwind;
2134 }
2135 }
2136
ae061d2a
LY		 2137 /* copy the fixed-up hw params for BE dai */
2138 memcpy(&be->dpcm[stream].hw_params, &dpcm->hw_params,
2139 sizeof(struct snd_pcm_hw_params));
2140
b0639bd2
KM		 2141 /* only allow hw_params() if no connected FEs are running */
2142 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
2143 continue;
2144
2145 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2146 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2147 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
2148 continue;
2149
2150 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
94d215cc 2151 be->dai_link->name);
b0639bd2 2152
01d7584c
LG		 2153 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
2154 if (ret < 0) {
2155 dev_err(dpcm->be->dev,
103d84a3 2156 "ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 2157 goto unwind;
2158 }
2159
2160 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2161 }
2162 return 0;
2163
2164unwind:
2165 /* disable any enabled and non active backends */
8d6258a4 2166 for_each_dpcm_be_rollback(fe, stream, dpcm) {
01d7584c
LG		 2167 struct snd_soc_pcm_runtime *be = dpcm->be;
2168 struct snd_pcm_substream *be_substream =
2169 snd_soc_dpcm_get_substream(be, stream);
2170
2171 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2172 continue;
2173
2174 /* only allow hw_free() if no connected FEs are running */
2175 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2176 continue;
2177
2178 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2179 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2180 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2181 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2182 continue;
2183
2184 soc_pcm_hw_free(be_substream);
2185 }
2186
2187 return ret;
2188}
2189
45c0a188
MB		 2190static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
2191 struct snd_pcm_hw_params *params)
01d7584c
LG		 2192{
2193 struct snd_soc_pcm_runtime *fe = substream->private_data;
2194 int ret, stream = substream->stream;
2195
2196 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
ea9d0d77 2197 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2198
2199 memcpy(&fe->dpcm[substream->stream].hw_params, params,
2200 sizeof(struct snd_pcm_hw_params));
2201 ret = dpcm_be_dai_hw_params(fe, substream->stream);
2202 if (ret < 0) {
103d84a3 2203 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
01d7584c
LG		 2204 goto out;
2205 }
2206
103d84a3 2207 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
01d7584c
LG		 2208 fe->dai_link->name, params_rate(params),
2209 params_channels(params), params_format(params));
2210
2211 /* call hw_params on the frontend */
2212 ret = soc_pcm_hw_params(substream, params);
2213 if (ret < 0) {
103d84a3 2214 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
01d7584c
LG		 2215 dpcm_be_dai_hw_free(fe, stream);
2216 } else
2217 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2218
2219out:
ea9d0d77 2220 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2221 mutex_unlock(&fe->card->mutex);
2222 return ret;
2223}
2224
2225static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
2226 struct snd_pcm_substream *substream, int cmd)
2227{
2228 int ret;
2229
103d84a3 2230 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
94d215cc 2231 dpcm->be->dai_link->name, cmd);
01d7584c
LG		 2232
2233 ret = soc_pcm_trigger(substream, cmd);
2234 if (ret < 0)
103d84a3 2235 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
01d7584c
LG		 2236
2237 return ret;
2238}
2239
23607025 2240int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
45c0a188 2241 int cmd)
01d7584c
LG		 2242{
2243 struct snd_soc_dpcm *dpcm;
2244 int ret = 0;
2245
8d6258a4 2246 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 2247
2248 struct snd_soc_pcm_runtime *be = dpcm->be;
2249 struct snd_pcm_substream *be_substream =
2250 snd_soc_dpcm_get_substream(be, stream);
2251
2252 /* is this op for this BE ? */
2253 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2254 continue;
2255
2256 switch (cmd) {
2257 case SNDRV_PCM_TRIGGER_START:
2258 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2259 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2260 continue;
2261
2262 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2263 if (ret)
2264 return ret;
2265
2266 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2267 break;
2268 case SNDRV_PCM_TRIGGER_RESUME:
2269 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2270 continue;
2271
2272 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2273 if (ret)
2274 return ret;
2275
2276 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2277 break;
2278 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2279 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
2280 continue;
2281
2282 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2283 if (ret)
2284 return ret;
2285
2286 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2287 break;
2288 case SNDRV_PCM_TRIGGER_STOP:
2289 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2290 continue;
2291
2292 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2293 continue;
2294
2295 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2296 if (ret)
2297 return ret;
2298
2299 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2300 break;
2301 case SNDRV_PCM_TRIGGER_SUSPEND:
868a6ca8 2302 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
01d7584c
LG		 2303 continue;
2304
2305 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2306 continue;
2307
2308 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2309 if (ret)
2310 return ret;
2311
2312 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
2313 break;
2314 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2315 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2316 continue;
2317
2318 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2319 continue;
2320
2321 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2322 if (ret)
2323 return ret;
2324
2325 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2326 break;
2327 }
2328 }
2329
2330 return ret;
2331}
2332EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
2333
acbf2774
RS		 2334static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream,
2335 int cmd, bool fe_first)
2336{
2337 struct snd_soc_pcm_runtime *fe = substream->private_data;
2338 int ret;
2339
2340 /* call trigger on the frontend before the backend. */
2341 if (fe_first) {
2342 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
2343 fe->dai_link->name, cmd);
2344
2345 ret = soc_pcm_trigger(substream, cmd);
2346 if (ret < 0)
2347 return ret;
2348
2349 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2350 return ret;
2351 }
2352
2353 /* call trigger on the frontend after the backend. */
2354 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2355 if (ret < 0)
2356 return ret;
2357
2358 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
2359 fe->dai_link->name, cmd);
2360
2361 ret = soc_pcm_trigger(substream, cmd);
2362
2363 return ret;
2364}
2365
ea9d0d77 2366static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
01d7584c
LG		 2367{
2368 struct snd_soc_pcm_runtime *fe = substream->private_data;
acbf2774
RS		 2369 int stream = substream->stream;
2370 int ret = 0;
01d7584c
LG		 2371 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2372
2373 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
2374
2375 switch (trigger) {
2376 case SND_SOC_DPCM_TRIGGER_PRE:
acbf2774
RS		 2377 switch (cmd) {
2378 case SNDRV_PCM_TRIGGER_START:
2379 case SNDRV_PCM_TRIGGER_RESUME:
2380 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2381 ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
2382 break;
2383 case SNDRV_PCM_TRIGGER_STOP:
2384 case SNDRV_PCM_TRIGGER_SUSPEND:
2385 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2386 ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
2387 break;
2388 default:
2389 ret = -EINVAL;
2390 break;
01d7584c 2391 }
01d7584c
LG		 2392 break;
2393 case SND_SOC_DPCM_TRIGGER_POST:
acbf2774
RS		 2394 switch (cmd) {
2395 case SNDRV_PCM_TRIGGER_START:
2396 case SNDRV_PCM_TRIGGER_RESUME:
2397 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2398 ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
2399 break;
2400 case SNDRV_PCM_TRIGGER_STOP:
2401 case SNDRV_PCM_TRIGGER_SUSPEND:
2402 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2403 ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
2404 break;
2405 default:
2406 ret = -EINVAL;
2407 break;
01d7584c 2408 }
01d7584c 2409 break;
07bf84aa
LG		 2410 case SND_SOC_DPCM_TRIGGER_BESPOKE:
2411 /* bespoke trigger() - handles both FE and BEs */
2412
103d84a3 2413 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
07bf84aa
LG		 2414 fe->dai_link->name, cmd);
2415
2416 ret = soc_pcm_bespoke_trigger(substream, cmd);
07bf84aa 2417 break;
01d7584c 2418 default:
103d84a3 2419 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
01d7584c
LG		 2420 fe->dai_link->name);
2421 ret = -EINVAL;
2422 goto out;
2423 }
2424
acbf2774
RS		 2425 if (ret < 0) {
2426 dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n",
2427 cmd, ret);
2428 goto out;
2429 }
2430
01d7584c
LG		 2431 switch (cmd) {
2432 case SNDRV_PCM_TRIGGER_START:
2433 case SNDRV_PCM_TRIGGER_RESUME:
2434 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2435 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2436 break;
2437 case SNDRV_PCM_TRIGGER_STOP:
2438 case SNDRV_PCM_TRIGGER_SUSPEND:
01d7584c
LG		 2439 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2440 break;
9f169b9f
PL		 2441 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2442 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2443 break;
01d7584c
LG		 2444 }
2445
2446out:
2447 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2448 return ret;
2449}
2450
ea9d0d77
TI		 2451static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2452{
2453 struct snd_soc_pcm_runtime *fe = substream->private_data;
2454 int stream = substream->stream;
2455
2456 /* if FE's runtime_update is already set, we're in race;
2457 * process this trigger later at exit
2458 */
2459 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2460 fe->dpcm[stream].trigger_pending = cmd + 1;
2461 return 0; /* delayed, assuming it's successful */
2462 }
2463
2464 /* we're alone, let's trigger */
2465 return dpcm_fe_dai_do_trigger(substream, cmd);
2466}
2467
23607025 2468int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2469{
2470 struct snd_soc_dpcm *dpcm;
2471 int ret = 0;
2472
8d6258a4 2473 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 2474
2475 struct snd_soc_pcm_runtime *be = dpcm->be;
2476 struct snd_pcm_substream *be_substream =
2477 snd_soc_dpcm_get_substream(be, stream);
2478
2479 /* is this op for this BE ? */
2480 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2481 continue;
2482
2483 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
95f444dc 2484 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
5087a8f1
LY		 2485 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) &&
2486 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
01d7584c
LG		 2487 continue;
2488
103d84a3 2489 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
94d215cc 2490 be->dai_link->name);
01d7584c
LG		 2491
2492 ret = soc_pcm_prepare(be_substream);
2493 if (ret < 0) {
103d84a3 2494 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
01d7584c
LG		 2495 ret);
2496 break;
2497 }
2498
2499 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2500 }
2501 return ret;
2502}
2503
45c0a188 2504static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
01d7584c
LG		 2505{
2506 struct snd_soc_pcm_runtime *fe = substream->private_data;
2507 int stream = substream->stream, ret = 0;
2508
2509 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2510
103d84a3 2511 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
01d7584c 2512
ea9d0d77 2513 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2514
2515 /* there is no point preparing this FE if there are no BEs */
2516 if (list_empty(&fe->dpcm[stream].be_clients)) {
103d84a3 2517 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
01d7584c
LG		 2518 fe->dai_link->name);
2519 ret = -EINVAL;
2520 goto out;
2521 }
2522
2523 ret = dpcm_be_dai_prepare(fe, substream->stream);
2524 if (ret < 0)
2525 goto out;
2526
2527 /* call prepare on the frontend */
2528 ret = soc_pcm_prepare(substream);
2529 if (ret < 0) {
103d84a3 2530 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
01d7584c
LG		 2531 fe->dai_link->name);
2532 goto out;
2533 }
2534
2535 /* run the stream event for each BE */
2536 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2537 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2538
2539out:
ea9d0d77 2540 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 2541 mutex_unlock(&fe->card->mutex);
2542
2543 return ret;
2544}
2545
618dae11
LG		 2546static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2547{
07bf84aa
LG		 2548 struct snd_pcm_substream *substream =
2549 snd_soc_dpcm_get_substream(fe, stream);
2550 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2551 int err;
2552
103d84a3 2553 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
618dae11
LG		 2554 stream ? "capture" : "playback", fe->dai_link->name);
2555
07bf84aa
LG		 2556 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2557 /* call bespoke trigger - FE takes care of all BE triggers */
103d84a3 2558 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
07bf84aa
LG		 2559 fe->dai_link->name);
2560
2561 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2562 if (err < 0)
103d84a3 2563 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2564 } else {
103d84a3 2565 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
07bf84aa
LG		 2566 fe->dai_link->name);
2567
2568 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2569 if (err < 0)
103d84a3 2570 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
07bf84aa 2571 }
618dae11
LG		 2572
2573 err = dpcm_be_dai_hw_free(fe, stream);
2574 if (err < 0)
103d84a3 2575 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
618dae11
LG		 2576
2577 err = dpcm_be_dai_shutdown(fe, stream);
2578 if (err < 0)
103d84a3 2579 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
618dae11
LG		 2580
2581 /* run the stream event for each BE */
2582 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2583
2584 return 0;
2585}
2586
2587static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2588{
07bf84aa
LG		 2589 struct snd_pcm_substream *substream =
2590 snd_soc_dpcm_get_substream(fe, stream);
618dae11 2591 struct snd_soc_dpcm *dpcm;
07bf84aa 2592 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11 2593 int ret;
a9764869 2594 unsigned long flags;
618dae11 2595
103d84a3 2596 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
618dae11
LG		 2597 stream ? "capture" : "playback", fe->dai_link->name);
2598
2599 /* Only start the BE if the FE is ready */
2600 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2601 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2602 return -EINVAL;
2603
2604 /* startup must always be called for new BEs */
2605 ret = dpcm_be_dai_startup(fe, stream);
fffc0ca2 2606 if (ret < 0)
618dae11 2607 goto disconnect;
618dae11
LG		 2608
2609 /* keep going if FE state is > open */
2610 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2611 return 0;
01d7584c 2612
618dae11 2613 ret = dpcm_be_dai_hw_params(fe, stream);
fffc0ca2 2614 if (ret < 0)
618dae11 2615 goto close;
618dae11
LG		 2616
2617 /* keep going if FE state is > hw_params */
2618 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2619 return 0;
2620
2621
2622 ret = dpcm_be_dai_prepare(fe, stream);
fffc0ca2 2623 if (ret < 0)
618dae11 2624 goto hw_free;
618dae11
LG		 2625
2626 /* run the stream event for each BE */
2627 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2628
2629 /* keep going if FE state is > prepare */
2630 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2631 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2632 return 0;
2633
07bf84aa
LG		 2634 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2635 /* call trigger on the frontend - FE takes care of all BE triggers */
103d84a3 2636 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
07bf84aa 2637 fe->dai_link->name);
618dae11 2638
07bf84aa
LG		 2639 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2640 if (ret < 0) {
103d84a3 2641 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
07bf84aa
LG		 2642 goto hw_free;
2643 }
2644 } else {
103d84a3 2645 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
07bf84aa
LG		 2646 fe->dai_link->name);
2647
2648 ret = dpcm_be_dai_trigger(fe, stream,
2649 SNDRV_PCM_TRIGGER_START);
2650 if (ret < 0) {
103d84a3 2651 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
07bf84aa
LG		 2652 goto hw_free;
2653 }
618dae11
LG		 2654 }
2655
2656 return 0;
2657
2658hw_free:
2659 dpcm_be_dai_hw_free(fe, stream);
2660close:
2661 dpcm_be_dai_shutdown(fe, stream);
2662disconnect:
2663 /* disconnect any non started BEs */
a9764869 2664 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
8d6258a4 2665 for_each_dpcm_be(fe, stream, dpcm) {
618dae11
LG		 2666 struct snd_soc_pcm_runtime *be = dpcm->be;
2667 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2668 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2669 }
a9764869 2670 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
618dae11
LG		 2671
2672 return ret;
2673}
2674
2675static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2676{
2677 int ret;
2678
ea9d0d77 2679 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2680 ret = dpcm_run_update_startup(fe, stream);
2681 if (ret < 0)
103d84a3 2682 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
ea9d0d77 2683 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2684
2685 return ret;
2686}
2687
2688static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2689{
2690 int ret;
2691
ea9d0d77 2692 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
618dae11
LG		 2693 ret = dpcm_run_update_shutdown(fe, stream);
2694 if (ret < 0)
103d84a3 2695 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
ea9d0d77 2696 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11
LG		 2697
2698 return ret;
2699}
2700
de15d7ff 2701static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
618dae11 2702{
de15d7ff
JB		 2703 struct snd_soc_dapm_widget_list *list;
2704 int count, paths;
618dae11 2705
de15d7ff
JB		 2706 if (!fe->dai_link->dynamic)
2707 return 0;
618dae11 2708
de15d7ff
JB		 2709 /* only check active links */
2710 if (!fe->cpu_dai->active)
2711 return 0;
618dae11 2712
de15d7ff
JB		 2713 /* DAPM sync will call this to update DSP paths */
2714 dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n",
2715 new ? "new" : "old", fe->dai_link->name);
618dae11 2716
de15d7ff 2717 /* skip if FE doesn't have playback capability */
467fece8
KM		 2718 if (!snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_PLAYBACK) ||
2719 !snd_soc_dai_stream_valid(fe->codec_dai, SNDRV_PCM_STREAM_PLAYBACK))
de15d7ff 2720 goto capture;
618dae11 2721
de15d7ff
JB		 2722 /* skip if FE isn't currently playing */
2723 if (!fe->cpu_dai->playback_active || !fe->codec_dai->playback_active)
2724 goto capture;
618dae11 2725
de15d7ff
JB		 2726 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2727 if (paths < 0) {
2728 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2729 fe->dai_link->name, "playback");
2730 return paths;
2731 }
618dae11 2732
de15d7ff
JB		 2733 /* update any playback paths */
2734 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, new);
2735 if (count) {
2736 if (new)
2737 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2738 else
618dae11 2739 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
618dae11 2740
de15d7ff
JB		 2741 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2742 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2743 }
2744
2745 dpcm_path_put(&list);
2746
618dae11 2747capture:
de15d7ff 2748 /* skip if FE doesn't have capture capability */
467fece8
KM		 2749 if (!snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_CAPTURE) ||
2750 !snd_soc_dai_stream_valid(fe->codec_dai, SNDRV_PCM_STREAM_CAPTURE))
de15d7ff 2751 return 0;
075207d2 2752
de15d7ff
JB		 2753 /* skip if FE isn't currently capturing */
2754 if (!fe->cpu_dai->capture_active || !fe->codec_dai->capture_active)
2755 return 0;
618dae11 2756
de15d7ff
JB		 2757 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2758 if (paths < 0) {
2759 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2760 fe->dai_link->name, "capture");
2761 return paths;
2762 }
618dae11 2763
de15d7ff
JB		 2764 /* update any old capture paths */
2765 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, new);
2766 if (count) {
2767 if (new)
618dae11 2768 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
de15d7ff 2769 else
618dae11 2770 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
618dae11 2771
de15d7ff
JB		 2772 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2773 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
618dae11
LG		 2774 }
2775
de15d7ff
JB		 2776 dpcm_path_put(&list);
2777
618dae11
LG		 2778 return 0;
2779}
de15d7ff
JB		 2780
2781/* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2782 * any DAI links.
2783 */
2784int soc_dpcm_runtime_update(struct snd_soc_card *card)
2785{
2786 struct snd_soc_pcm_runtime *fe;
2787 int ret = 0;
2788
2789 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2790 /* shutdown all old paths first */
bcb1fd1f 2791 for_each_card_rtds(card, fe) {
de15d7ff
JB		 2792 ret = soc_dpcm_fe_runtime_update(fe, 0);
2793 if (ret)
2794 goto out;
2795 }
2796
2797 /* bring new paths up */
bcb1fd1f 2798 for_each_card_rtds(card, fe) {
de15d7ff
JB		 2799 ret = soc_dpcm_fe_runtime_update(fe, 1);
2800 if (ret)
2801 goto out;
2802 }
2803
2804out:
2805 mutex_unlock(&card->mutex);
2806 return ret;
2807}
01d7584c
LG		 2808int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2809{
2810 struct snd_soc_dpcm *dpcm;
7afecb30 2811 struct snd_soc_dai *dai;
01d7584c 2812
8d6258a4 2813 for_each_dpcm_be(fe, SNDRV_PCM_STREAM_PLAYBACK, dpcm) {
01d7584c
LG		 2814
2815 struct snd_soc_pcm_runtime *be = dpcm->be;
2e5894d7 2816 int i;
01d7584c
LG		 2817
2818 if (be->dai_link->ignore_suspend)
2819 continue;
2820
7afecb30 2821 for_each_rtd_codec_dai(be, i, dai) {
2e5894d7
BC		 2822 struct snd_soc_dai_driver *drv = dai->driver;
2823
2824 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2825 be->dai_link->name);
01d7584c 2826
2e5894d7
BC		 2827 if (drv->ops && drv->ops->digital_mute &&
2828 dai->playback_active)
2829 drv->ops->digital_mute(dai, mute);
2830 }
01d7584c
LG		 2831 }
2832
2833 return 0;
2834}
2835
45c0a188 2836static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2837{
2838 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2839 struct snd_soc_dpcm *dpcm;
2840 struct snd_soc_dapm_widget_list *list;
2841 int ret;
2842 int stream = fe_substream->stream;
2843
2844 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2845 fe->dpcm[stream].runtime = fe_substream->runtime;
2846
8f70e515
QZ		 2847 ret = dpcm_path_get(fe, stream, &list);
2848 if (ret < 0) {
2849 mutex_unlock(&fe->card->mutex);
2850 return ret;
2851 } else if (ret == 0) {
103d84a3 2852 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
01d7584c 2853 fe->dai_link->name, stream ? "capture" : "playback");
01d7584c
LG		 2854 }
2855
2856 /* calculate valid and active FE <-> BE dpcms */
2857 dpcm_process_paths(fe, stream, &list, 1);
2858
2859 ret = dpcm_fe_dai_startup(fe_substream);
2860 if (ret < 0) {
2861 /* clean up all links */
8d6258a4 2862 for_each_dpcm_be(fe, stream, dpcm)
01d7584c
LG		 2863 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2864
2865 dpcm_be_disconnect(fe, stream);
2866 fe->dpcm[stream].runtime = NULL;
2867 }
2868
2869 dpcm_clear_pending_state(fe, stream);
2870 dpcm_path_put(&list);
2871 mutex_unlock(&fe->card->mutex);
2872 return ret;
2873}
2874
45c0a188 2875static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
01d7584c
LG		 2876{
2877 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2878 struct snd_soc_dpcm *dpcm;
2879 int stream = fe_substream->stream, ret;
2880
2881 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2882 ret = dpcm_fe_dai_shutdown(fe_substream);
2883
2884 /* mark FE's links ready to prune */
8d6258a4 2885 for_each_dpcm_be(fe, stream, dpcm)
01d7584c
LG		 2886 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2887
2888 dpcm_be_disconnect(fe, stream);
2889
2890 fe->dpcm[stream].runtime = NULL;
2891 mutex_unlock(&fe->card->mutex);
2892 return ret;
2893}
2894
5d61f0ba
TI		 2895static void soc_pcm_private_free(struct snd_pcm *pcm)
2896{
2897 struct snd_soc_pcm_runtime *rtd = pcm->private_data;
f523aceb 2898
f30a4c31
KM		 2899 /* need to sync the delayed work before releasing resources */
2900 flush_delayed_work(&rtd->delayed_work);
79776da0 2901 snd_soc_pcm_component_free(pcm);
5d61f0ba
TI		 2902}
2903
ddee627c
LG		 2904/* create a new pcm */
2905int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2906{
2e5894d7 2907 struct snd_soc_dai *codec_dai;
ddee627c 2908 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
f523aceb 2909 struct snd_soc_rtdcom_list *rtdcom;
2b544dd7 2910 struct snd_soc_component *component;
ddee627c
LG		 2911 struct snd_pcm *pcm;
2912 char new_name[64];
2913 int ret = 0, playback = 0, capture = 0;
2e5894d7 2914 int i;
ddee627c 2915
01d7584c 2916 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
1e9de42f
LG		 2917 playback = rtd->dai_link->dpcm_playback;
2918 capture = rtd->dai_link->dpcm_capture;
01d7584c 2919 } else {
a342031c
JB		 2920 /* Adapt stream for codec2codec links */
2921 struct snd_soc_pcm_stream *cpu_capture = rtd->dai_link->params ?
2922 &cpu_dai->driver->playback : &cpu_dai->driver->capture;
2923 struct snd_soc_pcm_stream *cpu_playback = rtd->dai_link->params ?
2924 &cpu_dai->driver->capture : &cpu_dai->driver->playback;
2925
0b7990e3 2926 for_each_rtd_codec_dai(rtd, i, codec_dai) {
467fece8
KM		 2927 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
2928 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
2e5894d7 2929 playback = 1;
467fece8
KM		 2930 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
2931 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
2e5894d7
BC		 2932 capture = 1;
2933 }
a342031c
JB		 2934
2935 capture = capture && cpu_capture->channels_min;
2936 playback = playback && cpu_playback->channels_min;
01d7584c
LG		 2937 }
2938
d6bead02
FE		 2939 if (rtd->dai_link->playback_only) {
2940 playback = 1;
2941 capture = 0;
2942 }
2943
2944 if (rtd->dai_link->capture_only) {
2945 playback = 0;
2946 capture = 1;
2947 }
2948
01d7584c 2949 /* create the PCM */
a342031c
JB		 2950 if (rtd->dai_link->params) {
2951 snprintf(new_name, sizeof(new_name), "codec2codec(%s)",
2952 rtd->dai_link->stream_name);
2953
2954 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2955 playback, capture, &pcm);
2956 } else if (rtd->dai_link->no_pcm) {
01d7584c
LG		 2957 snprintf(new_name, sizeof(new_name), "(%s)",
2958 rtd->dai_link->stream_name);
2959
2960 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2961 playback, capture, &pcm);
2962 } else {
2963 if (rtd->dai_link->dynamic)
2964 snprintf(new_name, sizeof(new_name), "%s (*)",
2965 rtd->dai_link->stream_name);
2966 else
2967 snprintf(new_name, sizeof(new_name), "%s %s-%d",
2e5894d7
BC		 2968 rtd->dai_link->stream_name,
2969 (rtd->num_codecs > 1) ?
2970 "multicodec" : rtd->codec_dai->name, num);
01d7584c
LG		 2971
2972 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
2973 capture, &pcm);
2974 }
ddee627c 2975 if (ret < 0) {
103d84a3 2976 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
5cb9b748 2977 rtd->dai_link->name);
ddee627c
LG		 2978 return ret;
2979 }
103d84a3 2980 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
ddee627c
LG		 2981
2982 /* DAPM dai link stream work */
a342031c
JB		 2983 if (rtd->dai_link->params)
2984 INIT_DELAYED_WORK(&rtd->delayed_work,
2985 codec2codec_close_delayed_work);
2986 else
2987 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
ddee627c 2988
48c7699f 2989 pcm->nonatomic = rtd->dai_link->nonatomic;
ddee627c
LG		 2990 rtd->pcm = pcm;
2991 pcm->private_data = rtd;
01d7584c 2992
a342031c 2993 if (rtd->dai_link->no_pcm || rtd->dai_link->params) {
01d7584c
LG		 2994 if (playback)
2995 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
2996 if (capture)
2997 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2998 goto out;
2999 }
3000
3001 /* ASoC PCM operations */
3002 if (rtd->dai_link->dynamic) {
3003 rtd->ops.open = dpcm_fe_dai_open;
3004 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
3005 rtd->ops.prepare = dpcm_fe_dai_prepare;
3006 rtd->ops.trigger = dpcm_fe_dai_trigger;
3007 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
3008 rtd->ops.close = dpcm_fe_dai_close;
3009 rtd->ops.pointer = soc_pcm_pointer;
96a47908 3010 rtd->ops.ioctl = snd_soc_pcm_component_ioctl;
01d7584c
LG		 3011 } else {
3012 rtd->ops.open = soc_pcm_open;
3013 rtd->ops.hw_params = soc_pcm_hw_params;
3014 rtd->ops.prepare = soc_pcm_prepare;
3015 rtd->ops.trigger = soc_pcm_trigger;
3016 rtd->ops.hw_free = soc_pcm_hw_free;
3017 rtd->ops.close = soc_pcm_close;
3018 rtd->ops.pointer = soc_pcm_pointer;
96a47908 3019 rtd->ops.ioctl = snd_soc_pcm_component_ioctl;
01d7584c
LG		 3020 }
3021
2b544dd7
KM		 3022 for_each_rtd_components(rtd, rtdcom, component) {
3023 const struct snd_soc_component_driver *drv = component->driver;
b8135864 3024
e9067bb5 3025 if (drv->copy_user)
82d81f5c 3026 rtd->ops.copy_user = snd_soc_pcm_component_copy_user;
e9067bb5 3027 if (drv->page)
9c712e4f 3028 rtd->ops.page = snd_soc_pcm_component_page;
e9067bb5 3029 if (drv->mmap)
205875e1 3030 rtd->ops.mmap = snd_soc_pcm_component_mmap;
ddee627c
LG		 3031 }
3032
3033 if (playback)
01d7584c 3034 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
ddee627c
LG		 3035
3036 if (capture)
01d7584c 3037 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
ddee627c 3038
7484291e
KM		 3039 ret = snd_soc_pcm_component_new(pcm);
3040 if (ret < 0) {
3041 dev_err(rtd->dev, "ASoC: pcm constructor failed: %d\n", ret);
3042 return ret;
ddee627c 3043 }
c641e5b2 3044
5d61f0ba 3045 pcm->private_free = soc_pcm_private_free;
3d21ef0b 3046 pcm->no_device_suspend = true;
01d7584c 3047out:
2e5894d7
BC		 3048 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
3049 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
3050 cpu_dai->name);
ddee627c
LG		 3051 return ret;
3052}
01d7584c
LG		 3053
3054/* is the current PCM operation for this FE ? */
3055int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
3056{
3057 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
3058 return 1;
3059 return 0;
3060}
3061EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
3062
3063/* is the current PCM operation for this BE ? */
3064int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
3065 struct snd_soc_pcm_runtime *be, int stream)
3066{
3067 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
3068 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
3069 be->dpcm[stream].runtime_update))
3070 return 1;
3071 return 0;
3072}
3073EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
3074
3075/* get the substream for this BE */
3076struct snd_pcm_substream *
3077 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
3078{
3079 return be->pcm->streams[stream].substream;
3080}
3081EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
3082
3083/* get the BE runtime state */
3084enum snd_soc_dpcm_state
3085 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
3086{
3087 return be->dpcm[stream].state;
3088}
3089EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
3090
3091/* set the BE runtime state */
3092void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
3093 int stream, enum snd_soc_dpcm_state state)
3094{
3095 be->dpcm[stream].state = state;
3096}
3097EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
3098
3099/*
3100 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
3101 * are not running, paused or suspended for the specified stream direction.
3102 */
3103int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
3104 struct snd_soc_pcm_runtime *be, int stream)
3105{
3106 struct snd_soc_dpcm *dpcm;
3107 int state;
a9764869
KC		 3108 int ret = 1;
3109 unsigned long flags;
01d7584c 3110
a9764869 3111 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
d2e24d64 3112 for_each_dpcm_fe(be, stream, dpcm) {
01d7584c
LG		 3113
3114 if (dpcm->fe == fe)
3115 continue;
3116
3117 state = dpcm->fe->dpcm[stream].state;
3118 if (state == SND_SOC_DPCM_STATE_START ||
3119 state == SND_SOC_DPCM_STATE_PAUSED ||
a9764869
KC		 3120 state == SND_SOC_DPCM_STATE_SUSPEND) {
3121 ret = 0;
3122 break;
3123 }
01d7584c 3124 }
a9764869 3125 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
01d7584c
LG		 3126
3127 /* it's safe to free/stop this BE DAI */
a9764869 3128 return ret;
01d7584c
LG		 3129}
3130EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
3131
3132/*
3133 * We can only change hw params a BE DAI if any of it's FE are not prepared,
3134 * running, paused or suspended for the specified stream direction.
3135 */
3136int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
3137 struct snd_soc_pcm_runtime *be, int stream)
3138{
3139 struct snd_soc_dpcm *dpcm;
3140 int state;
a9764869
KC		 3141 int ret = 1;
3142 unsigned long flags;
01d7584c 3143
a9764869 3144 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
d2e24d64 3145 for_each_dpcm_fe(be, stream, dpcm) {
01d7584c
LG		 3146
3147 if (dpcm->fe == fe)
3148 continue;
3149
3150 state = dpcm->fe->dpcm[stream].state;
3151 if (state == SND_SOC_DPCM_STATE_START ||
3152 state == SND_SOC_DPCM_STATE_PAUSED ||
3153 state == SND_SOC_DPCM_STATE_SUSPEND ||
a9764869
KC		 3154 state == SND_SOC_DPCM_STATE_PREPARE) {
3155 ret = 0;
3156 break;
3157 }
01d7584c 3158 }
a9764869 3159 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
01d7584c
LG		 3160
3161 /* it's safe to change hw_params */
a9764869 3162 return ret;
01d7584c
LG		 3163}
3164EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
f86dcef8
LG		 3165
3166#ifdef CONFIG_DEBUG_FS
85280141 3167static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
f86dcef8
LG		 3168{
3169 switch (state) {
3170 case SND_SOC_DPCM_STATE_NEW:
3171 return "new";
3172 case SND_SOC_DPCM_STATE_OPEN:
3173 return "open";
3174 case SND_SOC_DPCM_STATE_HW_PARAMS:
3175 return "hw_params";
3176 case SND_SOC_DPCM_STATE_PREPARE:
3177 return "prepare";
3178 case SND_SOC_DPCM_STATE_START:
3179 return "start";
3180 case SND_SOC_DPCM_STATE_STOP:
3181 return "stop";
3182 case SND_SOC_DPCM_STATE_SUSPEND:
3183 return "suspend";
3184 case SND_SOC_DPCM_STATE_PAUSED:
3185 return "paused";
3186 case SND_SOC_DPCM_STATE_HW_FREE:
3187 return "hw_free";
3188 case SND_SOC_DPCM_STATE_CLOSE:
3189 return "close";
3190 }
3191
3192 return "unknown";
3193}
3194
f86dcef8
LG		 3195static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
3196 int stream, char *buf, size_t size)
3197{
3198 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
3199 struct snd_soc_dpcm *dpcm;
3200 ssize_t offset = 0;
a9764869 3201 unsigned long flags;
f86dcef8
LG		 3202
3203 /* FE state */
3204 offset += snprintf(buf + offset, size - offset,
3205 "[%s - %s]\n", fe->dai_link->name,
3206 stream ? "Capture" : "Playback");
3207
3208 offset += snprintf(buf + offset, size - offset, "State: %s\n",
3209 dpcm_state_string(fe->dpcm[stream].state));
3210
3211 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3212 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3213 offset += snprintf(buf + offset, size - offset,
3214 "Hardware Params: "
3215 "Format = %s, Channels = %d, Rate = %d\n",
3216 snd_pcm_format_name(params_format(params)),
3217 params_channels(params),
3218 params_rate(params));
3219
3220 /* BEs state */
3221 offset += snprintf(buf + offset, size - offset, "Backends:\n");
3222
3223 if (list_empty(&fe->dpcm[stream].be_clients)) {
3224 offset += snprintf(buf + offset, size - offset,
3225 " No active DSP links\n");
3226 goto out;
3227 }
3228
a9764869 3229 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
8d6258a4 3230 for_each_dpcm_be(fe, stream, dpcm) {
f86dcef8
LG		 3231 struct snd_soc_pcm_runtime *be = dpcm->be;
3232 params = &dpcm->hw_params;
3233
3234 offset += snprintf(buf + offset, size - offset,
3235 "- %s\n", be->dai_link->name);
3236
3237 offset += snprintf(buf + offset, size - offset,
3238 " State: %s\n",
3239 dpcm_state_string(be->dpcm[stream].state));
3240
3241 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3242 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3243 offset += snprintf(buf + offset, size - offset,
3244 " Hardware Params: "
3245 "Format = %s, Channels = %d, Rate = %d\n",
3246 snd_pcm_format_name(params_format(params)),
3247 params_channels(params),
3248 params_rate(params));
3249 }
a9764869 3250 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
f86dcef8
LG		 3251out:
3252 return offset;
3253}
3254
3255static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
3256 size_t count, loff_t *ppos)
3257{
3258 struct snd_soc_pcm_runtime *fe = file->private_data;
3259 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
3260 char *buf;
3261
3262 buf = kmalloc(out_count, GFP_KERNEL);
3263 if (!buf)
3264 return -ENOMEM;
3265
467fece8 3266 if (snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
f86dcef8
LG		 3267 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
3268 buf + offset, out_count - offset);
3269
467fece8 3270 if (snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
f86dcef8
LG		 3271 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
3272 buf + offset, out_count - offset);
3273
f57b8488 3274 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
f86dcef8 3275
f57b8488
LG		 3276 kfree(buf);
3277 return ret;
f86dcef8
LG		 3278}
3279
3280static const struct file_operations dpcm_state_fops = {
f57b8488 3281 .open = simple_open,
f86dcef8
LG		 3282 .read = dpcm_state_read_file,
3283 .llseek = default_llseek,
3284};
3285
2e55b90a 3286void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
f86dcef8 3287{
b3bba9a1 3288 if (!rtd->dai_link)
2e55b90a 3289 return;
b3bba9a1 3290
596becd3
KM		 3291 if (!rtd->dai_link->dynamic)
3292 return;
3293
6553bf06
LPC		 3294 if (!rtd->card->debugfs_card_root)
3295 return;
b3bba9a1 3296
f86dcef8
LG		 3297 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
3298 rtd->card->debugfs_card_root);
f86dcef8 3299
f1e3f409
FE		 3300 debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
3301 rtd, &dpcm_state_fops);
f86dcef8
LG		 3302}
3303#endif
Linux 6.x block layer and io_uring tree(s)