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ASoC: Merge fixes due to dependencies
[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>
ddee627c
LG		 17#include <linux/slab.h>
18#include <linux/workqueue.h>
01d7584c 19#include <linux/export.h>
f86dcef8 20#include <linux/debugfs.h>
ddee627c
LG		 21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/pcm_params.h>
24#include <sound/soc.h>
01d7584c 25#include <sound/soc-dpcm.h>
a5e6c109 26#include <sound/soc-link.h>
ddee627c
LG		 27#include <sound/initval.h>
28
04110728
KM		 29#define soc_pcm_ret(rtd, ret) _soc_pcm_ret(rtd, __func__, ret)
30static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd,
31 const char *func, int ret)
32{
33 /* Positive, Zero values are not errors */
34 if (ret >= 0)
35 return ret;
36
37 /* Negative values might be errors */
38 switch (ret) {
39 case -EPROBE_DEFER:
40 case -ENOTSUPP:
41 break;
42 default:
43 dev_err(rtd->dev,
44 "ASoC: error at %s on %s: %d\n",
45 func, rtd->dai_link->name, ret);
46 }
47
48 return ret;
49}
50
b7898396
TI		 51static inline void snd_soc_dpcm_stream_lock_irq(struct snd_soc_pcm_runtime *rtd,
52 int stream)
53{
54 snd_pcm_stream_lock_irq(snd_soc_dpcm_get_substream(rtd, stream));
55}
56
3c75c0ea
TI		 57#define snd_soc_dpcm_stream_lock_irqsave_nested(rtd, stream, flags) \
58 snd_pcm_stream_lock_irqsave_nested(snd_soc_dpcm_get_substream(rtd, stream), flags)
b2ae8066 59
b7898396
TI		 60static inline void snd_soc_dpcm_stream_unlock_irq(struct snd_soc_pcm_runtime *rtd,
61 int stream)
62{
63 snd_pcm_stream_unlock_irq(snd_soc_dpcm_get_substream(rtd, stream));
64}
65
b2ae8066
TI		 66#define snd_soc_dpcm_stream_unlock_irqrestore(rtd, stream, flags) \
67 snd_pcm_stream_unlock_irqrestore(snd_soc_dpcm_get_substream(rtd, stream), flags)
68
01d7584c
LG		 69#define DPCM_MAX_BE_USERS 8
70
6fb8944c
KM		 71static inline const char *soc_cpu_dai_name(struct snd_soc_pcm_runtime *rtd)
72{
3989ade2 73 return (rtd)->dai_link->num_cpus == 1 ? asoc_rtd_to_cpu(rtd, 0)->name : "multicpu";
6fb8944c
KM		 74}
75static inline const char *soc_codec_dai_name(struct snd_soc_pcm_runtime *rtd)
76{
3989ade2 77 return (rtd)->dai_link->num_codecs == 1 ? asoc_rtd_to_codec(rtd, 0)->name : "multicodec";
6fb8944c
KM		 78}
79
c3212829
KM		 80#ifdef CONFIG_DEBUG_FS
81static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
82{
83 switch (state) {
84 case SND_SOC_DPCM_STATE_NEW:
85 return "new";
86 case SND_SOC_DPCM_STATE_OPEN:
87 return "open";
88 case SND_SOC_DPCM_STATE_HW_PARAMS:
89 return "hw_params";
90 case SND_SOC_DPCM_STATE_PREPARE:
91 return "prepare";
92 case SND_SOC_DPCM_STATE_START:
93 return "start";
94 case SND_SOC_DPCM_STATE_STOP:
95 return "stop";
96 case SND_SOC_DPCM_STATE_SUSPEND:
97 return "suspend";
98 case SND_SOC_DPCM_STATE_PAUSED:
99 return "paused";
100 case SND_SOC_DPCM_STATE_HW_FREE:
101 return "hw_free";
102 case SND_SOC_DPCM_STATE_CLOSE:
103 return "close";
104 }
105
106 return "unknown";
107}
108
109static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
110 int stream, char *buf, size_t size)
111{
112 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
113 struct snd_soc_dpcm *dpcm;
114 ssize_t offset = 0;
c3212829
KM		 115
116 /* FE state */
d0c9abb8 117 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 118 "[%s - %s]\n", fe->dai_link->name,
119 stream ? "Capture" : "Playback");
120
d0c9abb8 121 offset += scnprintf(buf + offset, size - offset, "State: %s\n",
c3212829
KM		 122 dpcm_state_string(fe->dpcm[stream].state));
123
124 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
125 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
d0c9abb8 126 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 127 "Hardware Params: "
128 "Format = %s, Channels = %d, Rate = %d\n",
129 snd_pcm_format_name(params_format(params)),
130 params_channels(params),
131 params_rate(params));
132
133 /* BEs state */
d0c9abb8 134 offset += scnprintf(buf + offset, size - offset, "Backends:\n");
c3212829
KM		 135
136 if (list_empty(&fe->dpcm[stream].be_clients)) {
d0c9abb8 137 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 138 " No active DSP links\n");
139 goto out;
140 }
141
c3212829
KM		 142 for_each_dpcm_be(fe, stream, dpcm) {
143 struct snd_soc_pcm_runtime *be = dpcm->be;
25106550 144 params = &be->dpcm[stream].hw_params;
c3212829 145
d0c9abb8 146 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 147 "- %s\n", be->dai_link->name);
148
d0c9abb8 149 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 150 " State: %s\n",
151 dpcm_state_string(be->dpcm[stream].state));
152
153 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
154 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
d0c9abb8 155 offset += scnprintf(buf + offset, size - offset,
c3212829
KM		 156 " Hardware Params: "
157 "Format = %s, Channels = %d, Rate = %d\n",
158 snd_pcm_format_name(params_format(params)),
159 params_channels(params),
160 params_rate(params));
161 }
c3212829
KM		 162out:
163 return offset;
164}
165
166static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
167 size_t count, loff_t *ppos)
168{
169 struct snd_soc_pcm_runtime *fe = file->private_data;
170 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
171 int stream;
172 char *buf;
173
3989ade2 174 if (fe->dai_link->num_cpus > 1) {
6e1276a5
BL		 175 dev_err(fe->dev,
176 "%s doesn't support Multi CPU yet\n", __func__);
177 return -EINVAL;
178 }
179
c3212829
KM		 180 buf = kmalloc(out_count, GFP_KERNEL);
181 if (!buf)
182 return -ENOMEM;
183
b7898396 184 snd_soc_dpcm_mutex_lock(fe);
c3212829 185 for_each_pcm_streams(stream)
c2233a26 186 if (snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream))
c3212829
KM		 187 offset += dpcm_show_state(fe, stream,
188 buf + offset,
189 out_count - offset);
b7898396 190 snd_soc_dpcm_mutex_unlock(fe);
c3212829
KM		 191
192 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
193
194 kfree(buf);
195 return ret;
196}
197
198static const struct file_operations dpcm_state_fops = {
199 .open = simple_open,
200 .read = dpcm_state_read_file,
201 .llseek = default_llseek,
202};
203
204void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
205{
c3212829
KM		 206 if (!rtd->dai_link->dynamic)
207 return;
208
209 if (!rtd->card->debugfs_card_root)
210 return;
211
212 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
213 rtd->card->debugfs_card_root);
214
215 debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
216 rtd, &dpcm_state_fops);
217}
154dae87
KM		 218
219static void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream)
220{
221 char *name;
222
223 name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name,
224 stream ? "capture" : "playback");
225 if (name) {
226 dpcm->debugfs_state = debugfs_create_dir(
227 name, dpcm->fe->debugfs_dpcm_root);
228 debugfs_create_u32("state", 0644, dpcm->debugfs_state,
229 &dpcm->state);
230 kfree(name);
231 }
232}
233
234static void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm)
235{
236 debugfs_remove_recursive(dpcm->debugfs_state);
237}
238
239#else
240static inline void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm,
241 int stream)
242{
243}
244
245static inline void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm)
246{
247}
c3212829
KM		 248#endif
249
9c6d7f93
KM		 250/* Set FE's runtime_update state; the state is protected via PCM stream lock
251 * for avoiding the race with trigger callback.
252 * If the state is unset and a trigger is pending while the previous operation,
253 * process the pending trigger action here.
254 */
255static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
256static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
257 int stream, enum snd_soc_dpcm_update state)
258{
259 struct snd_pcm_substream *substream =
260 snd_soc_dpcm_get_substream(fe, stream);
261
b7898396 262 snd_soc_dpcm_stream_lock_irq(fe, stream);
9c6d7f93
KM		 263 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
264 dpcm_fe_dai_do_trigger(substream,
265 fe->dpcm[stream].trigger_pending - 1);
266 fe->dpcm[stream].trigger_pending = 0;
267 }
268 fe->dpcm[stream].runtime_update = state;
b7898396 269 snd_soc_dpcm_stream_unlock_irq(fe, stream);
9c6d7f93
KM		 270}
271
a7e20444
KM		 272static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be,
273 int stream, enum snd_soc_dpcm_update state)
274{
275 be->dpcm[stream].runtime_update = state;
276}
277
d9051d86
KM		 278/**
279 * snd_soc_runtime_action() - Increment/Decrement active count for
280 * PCM runtime components
281 * @rtd: ASoC PCM runtime that is activated
282 * @stream: Direction of the PCM stream
b6d6e9ea 283 * @action: Activate stream if 1. Deactivate if -1.
d9051d86
KM		 284 *
285 * Increments/Decrements the active count for all the DAIs and components
286 * attached to a PCM runtime.
287 * Should typically be called when a stream is opened.
288 *
289 * Must be called with the rtd->card->pcm_mutex being held
290 */
291void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd,
292 int stream, int action)
24894b76 293{
c840f769 294 struct snd_soc_dai *dai;
2e5894d7 295 int i;
24894b76 296
b7898396 297 snd_soc_dpcm_mutex_assert_held(rtd);
24894b76 298
dc829106
KM		 299 for_each_rtd_dais(rtd, i, dai)
300 snd_soc_dai_action(dai, stream, action);
24894b76 301}
d9051d86 302EXPORT_SYMBOL_GPL(snd_soc_runtime_action);
24894b76 303
208a1589
LPC		 304/**
305 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
306 * @rtd: The ASoC PCM runtime that should be checked.
307 *
308 * This function checks whether the power down delay should be ignored for a
309 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
310 * been configured to ignore the delay, or if none of the components benefits
311 * from having the delay.
312 */
313bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
314{
fbb16563 315 struct snd_soc_component *component;
2e5894d7 316 bool ignore = true;
613fb500 317 int i;
2e5894d7 318
208a1589
LPC		 319 if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
320 return true;
321
613fb500 322 for_each_rtd_components(rtd, i, component)
72c38184 323 ignore &= !component->driver->use_pmdown_time;
fbb16563 324
fbb16563 325 return ignore;
208a1589
LPC		 326}
327
90996f43
LPC		 328/**
329 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
330 * @substream: the pcm substream
331 * @hw: the hardware parameters
332 *
333 * Sets the substream runtime hardware parameters.
334 */
335int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
336 const struct snd_pcm_hardware *hw)
337{
56e749ba
KM		 338 substream->runtime->hw = *hw;
339
90996f43
LPC		 340 return 0;
341}
342EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
343
01d7584c 344/* DPCM stream event, send event to FE and all active BEs. */
23607025 345int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
01d7584c
LG		 346 int event)
347{
348 struct snd_soc_dpcm *dpcm;
349
b7898396
TI		 350 snd_soc_dpcm_mutex_assert_held(fe);
351
8d6258a4 352 for_each_dpcm_be(fe, dir, dpcm) {
01d7584c
LG		 353
354 struct snd_soc_pcm_runtime *be = dpcm->be;
355
103d84a3 356 dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
01d7584c
LG		 357 be->dai_link->name, event, dir);
358
b1cd2e34
BG		 359 if ((event == SND_SOC_DAPM_STREAM_STOP) &&
360 (be->dpcm[dir].users >= 1))
361 continue;
362
01d7584c
LG		 363 snd_soc_dapm_stream_event(be, dir, event);
364 }
365
366 snd_soc_dapm_stream_event(fe, dir, event);
367
368 return 0;
369}
370
2805b8bd
KM		 371static void soc_pcm_set_dai_params(struct snd_soc_dai *dai,
372 struct snd_pcm_hw_params *params)
373{
374 if (params) {
375 dai->rate = params_rate(params);
376 dai->channels = params_channels(params);
377 dai->sample_bits = snd_pcm_format_physical_width(params_format(params));
378 } else {
379 dai->rate = 0;
380 dai->channels = 0;
381 dai->sample_bits = 0;
382 }
383}
384
17841020
DA		 385static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
386 struct snd_soc_dai *soc_dai)
ddee627c 387{
0ceef681 388 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
ddee627c
LG		 389 int ret;
390
f8fc9ec5
KM		 391 if (!snd_soc_dai_active(soc_dai))
392 return 0;
393
fac110cb
KM		 394#define __soc_pcm_apply_symmetry(name, NAME) \
395 if (soc_dai->name && (soc_dai->driver->symmetric_##name || \
396 rtd->dai_link->symmetric_##name)) { \
397 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %s to %d\n",\
398 #name, soc_dai->name); \
399 \
400 ret = snd_pcm_hw_constraint_single(substream->runtime, \
401 SNDRV_PCM_HW_PARAM_##NAME,\
402 soc_dai->name); \
403 if (ret < 0) { \
404 dev_err(soc_dai->dev, \
405 "ASoC: Unable to apply %s constraint: %d\n",\
406 #name, ret); \
407 return ret; \
408 } \
3635bf09 409 }
ddee627c 410
fac110cb
KM		 411 __soc_pcm_apply_symmetry(rate, RATE);
412 __soc_pcm_apply_symmetry(channels, CHANNELS);
413 __soc_pcm_apply_symmetry(sample_bits, SAMPLE_BITS);
ddee627c
LG		 414
415 return 0;
416}
417
3635bf09
NC		 418static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
419 struct snd_pcm_hw_params *params)
420{
0ceef681 421 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
2805b8bd 422 struct snd_soc_dai d;
c840f769 423 struct snd_soc_dai *dai;
19bdcc7a 424 struct snd_soc_dai *cpu_dai;
2805b8bd 425 unsigned int symmetry, i;
3635bf09 426
ee39d77e 427 d.name = __func__;
2805b8bd 428 soc_pcm_set_dai_params(&d, params);
3635bf09 429
1cacbac4
KM		 430#define __soc_pcm_params_symmetry(xxx) \
431 symmetry = rtd->dai_link->symmetric_##xxx; \
3a906721 432 for_each_rtd_dais(rtd, i, dai) \
1cacbac4 433 symmetry |= dai->driver->symmetric_##xxx; \
3a906721
KM		 434 \
435 if (symmetry) \
436 for_each_rtd_cpu_dais(rtd, i, cpu_dai) \
9c2ae363
KM		 437 if (!snd_soc_dai_is_dummy(cpu_dai) && \
438 cpu_dai->xxx && cpu_dai->xxx != d.xxx) { \
ee39d77e
KM		 439 dev_err(rtd->dev, "ASoC: unmatched %s symmetry: %s:%d - %s:%d\n", \
440 #xxx, cpu_dai->name, cpu_dai->xxx, d.name, d.xxx); \
3a906721 441 return -EINVAL; \
19bdcc7a 442 }
ddee627c 443
3a906721
KM		 444 /* reject unmatched parameters when applying symmetry */
445 __soc_pcm_params_symmetry(rate);
446 __soc_pcm_params_symmetry(channels);
447 __soc_pcm_params_symmetry(sample_bits);
ddee627c
LG		 448
449 return 0;
450}
451
68cbc557 452static void soc_pcm_update_symmetry(struct snd_pcm_substream *substream)
62e5f676 453{
0ceef681 454 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
62e5f676 455 struct snd_soc_dai_link *link = rtd->dai_link;
c840f769 456 struct snd_soc_dai *dai;
2e5894d7 457 unsigned int symmetry, i;
62e5f676 458
f14654dd 459 symmetry = link->symmetric_rate ||
19bdcc7a 460 link->symmetric_channels ||
f14654dd 461 link->symmetric_sample_bits;
19bdcc7a 462
c840f769 463 for_each_rtd_dais(rtd, i, dai)
2e5894d7 464 symmetry = symmetry ||
f14654dd 465 dai->driver->symmetric_rate ||
c840f769 466 dai->driver->symmetric_channels ||
f14654dd 467 dai->driver->symmetric_sample_bits;
2e5894d7 468
68cbc557
KM		 469 if (symmetry)
470 substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
62e5f676
LPC		 471}
472
2e5894d7 473static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
58ba9b25 474{
0ceef681 475 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
c6068d3a 476 int ret;
58ba9b25
MB		 477
478 if (!bits)
479 return;
480
0e2a3751
LPC		 481 ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
482 if (ret != 0)
483 dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
484 bits, ret);
58ba9b25
MB		 485}
486
c8dd1fec
BC		 487static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
488{
0ceef681 489 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
19bdcc7a 490 struct snd_soc_dai *cpu_dai;
2e5894d7 491 struct snd_soc_dai *codec_dai;
57be9206 492 int stream = substream->stream;
2e5894d7 493 int i;
19bdcc7a 494 unsigned int bits = 0, cpu_bits = 0;
c8dd1fec 495
a4be4187 496 for_each_rtd_codec_dais(rtd, i, codec_dai) {
2bc3e1f2 497 struct snd_soc_pcm_stream *pcm_codec = snd_soc_dai_get_pcm_stream(codec_dai, stream);
57be9206
KM		 498
499 if (pcm_codec->sig_bits == 0) {
500 bits = 0;
501 break;
2e5894d7 502 }
57be9206 503 bits = max(pcm_codec->sig_bits, bits);
c8dd1fec
BC		 504 }
505
a4be4187 506 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
2bc3e1f2 507 struct snd_soc_pcm_stream *pcm_cpu = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
19bdcc7a
SN		 508
509 if (pcm_cpu->sig_bits == 0) {
510 cpu_bits = 0;
511 break;
512 }
513 cpu_bits = max(pcm_cpu->sig_bits, cpu_bits);
514 }
57be9206 515
2e5894d7
BC		 516 soc_pcm_set_msb(substream, bits);
517 soc_pcm_set_msb(substream, cpu_bits);
c8dd1fec
BC		 518}
519
f6c04af5
KM		 520static void soc_pcm_hw_init(struct snd_pcm_hardware *hw)
521{
522 hw->rates = UINT_MAX;
523 hw->rate_min = 0;
524 hw->rate_max = UINT_MAX;
6cb56a45
KM		 525 hw->channels_min = 0;
526 hw->channels_max = UINT_MAX;
debc71f2 527 hw->formats = ULLONG_MAX;
f6c04af5
KM		 528}
529
530static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw,
531 struct snd_soc_pcm_stream *p)
532{
533 hw->rates = snd_pcm_rate_mask_intersect(hw->rates, p->rates);
534
535 /* setup hw->rate_min/max via hw->rates first */
536 snd_pcm_hw_limit_rates(hw);
537
538 /* update hw->rate_min/max by snd_soc_pcm_stream */
539 hw->rate_min = max(hw->rate_min, p->rate_min);
540 hw->rate_max = min_not_zero(hw->rate_max, p->rate_max);
541}
542
6cb56a45
KM		 543static void soc_pcm_hw_update_chan(struct snd_pcm_hardware *hw,
544 struct snd_soc_pcm_stream *p)
545{
546 hw->channels_min = max(hw->channels_min, p->channels_min);
547 hw->channels_max = min(hw->channels_max, p->channels_max);
548}
549
debc71f2
KM		 550static void soc_pcm_hw_update_format(struct snd_pcm_hardware *hw,
551 struct snd_soc_pcm_stream *p)
552{
553 hw->formats &= p->formats;
554}
555
5854a464
SH		 556/**
557 * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream
558 * @rtd: ASoC PCM runtime
559 * @hw: PCM hardware parameters (output)
560 * @stream: Direction of the PCM stream
561 *
562 * Calculates the subset of stream parameters supported by all DAIs
563 * associated with the PCM stream.
564 */
565int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
566 struct snd_pcm_hardware *hw, int stream)
bd477c31 567{
0b7990e3 568 struct snd_soc_dai *codec_dai;
19bdcc7a 569 struct snd_soc_dai *cpu_dai;
2e5894d7
BC		 570 struct snd_soc_pcm_stream *codec_stream;
571 struct snd_soc_pcm_stream *cpu_stream;
19bdcc7a 572 unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX;
2e5894d7 573 int i;
78e45c99 574
f6c04af5
KM		 575 soc_pcm_hw_init(hw);
576
19bdcc7a 577 /* first calculate min/max only for CPUs in the DAI link */
a4be4187 578 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
0e9cf4c4
BL		 579
580 /*
581 * Skip CPUs which don't support the current stream type.
582 * Otherwise, since the rate, channel, and format values will
583 * zero in that case, we would have no usable settings left,
584 * causing the resulting setup to fail.
0e9cf4c4 585 */
5854a464 586 if (!snd_soc_dai_stream_valid(cpu_dai, stream))
0e9cf4c4
BL		 587 continue;
588
19bdcc7a
SN		 589 cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
590
6cb56a45 591 soc_pcm_hw_update_chan(hw, cpu_stream);
f6c04af5 592 soc_pcm_hw_update_rate(hw, cpu_stream);
debc71f2 593 soc_pcm_hw_update_format(hw, cpu_stream);
19bdcc7a 594 }
6cb56a45
KM		 595 cpu_chan_min = hw->channels_min;
596 cpu_chan_max = hw->channels_max;
78e45c99 597
19bdcc7a 598 /* second calculate min/max only for CODECs in the DAI link */
a4be4187 599 for_each_rtd_codec_dais(rtd, i, codec_dai) {
cde79035
RW		 600
601 /*
602 * Skip CODECs which don't support the current stream type.
603 * Otherwise, since the rate, channel, and format values will
604 * zero in that case, we would have no usable settings left,
605 * causing the resulting setup to fail.
cde79035 606 */
25c2f515 607 if (!snd_soc_dai_stream_valid(codec_dai, stream))
cde79035
RW		 608 continue;
609
acf253c1
KM		 610 codec_stream = snd_soc_dai_get_pcm_stream(codec_dai, stream);
611
6cb56a45 612 soc_pcm_hw_update_chan(hw, codec_stream);
f6c04af5 613 soc_pcm_hw_update_rate(hw, codec_stream);
debc71f2 614 soc_pcm_hw_update_format(hw, codec_stream);
2e5894d7
BC		 615 }
616
5854a464 617 /* Verify both a valid CPU DAI and a valid CODEC DAI were found */
6cb56a45 618 if (!hw->channels_min)
5854a464
SH		 619 return -EINVAL;
620
2e5894d7
BC		 621 /*
622 * chan min/max cannot be enforced if there are multiple CODEC DAIs
19bdcc7a 623 * connected to CPU DAI(s), use CPU DAI's directly and let
2e5894d7
BC		 624 * channel allocation be fixed up later
625 */
3989ade2 626 if (rtd->dai_link->num_codecs > 1) {
6cb56a45
KM		 627 hw->channels_min = cpu_chan_min;
628 hw->channels_max = cpu_chan_max;
2e5894d7
BC		 629 }
630
5854a464
SH		 631 return 0;
632}
633EXPORT_SYMBOL_GPL(snd_soc_runtime_calc_hw);
634
635static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
636{
637 struct snd_pcm_hardware *hw = &substream->runtime->hw;
0ceef681 638 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
5854a464
SH		 639 u64 formats = hw->formats;
640
641 /*
642 * At least one CPU and one CODEC should match. Otherwise, we should
643 * have bailed out on a higher level, since there would be no CPU or
644 * CODEC to support the transfer direction in that case.
645 */
646 snd_soc_runtime_calc_hw(rtd, hw, substream->stream);
647
648 if (formats)
649 hw->formats &= formats;
bd477c31
LPC		 650}
651
dd03907b 652static int soc_pcm_components_open(struct snd_pcm_substream *substream)
e7ecfdb7 653{
0ceef681 654 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
e7ecfdb7 655 struct snd_soc_component *component;
613fb500 656 int i, ret = 0;
e7ecfdb7 657
613fb500 658 for_each_rtd_components(rtd, i, component) {
51aff91a 659 ret = snd_soc_component_module_get_when_open(component, substream);
bcae1631 660 if (ret < 0)
d2aaa8d8 661 break;
e7ecfdb7 662
ae2f4849 663 ret = snd_soc_component_open(component, substream);
bcae1631 664 if (ret < 0)
d2aaa8d8 665 break;
e7ecfdb7 666 }
dd03907b 667
d2aaa8d8 668 return ret;
e7ecfdb7
KM		 669}
670
51aff91a
KM		 671static int soc_pcm_components_close(struct snd_pcm_substream *substream,
672 int rollback)
244e2936 673{
0ceef681 674 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
244e2936 675 struct snd_soc_component *component;
33be10b5 676 int i, ret = 0;
244e2936 677
613fb500 678 for_each_rtd_components(rtd, i, component) {
33be10b5 679 int r = snd_soc_component_close(component, substream, rollback);
e82ebffc
KM		 680 if (r < 0)
681 ret = r; /* use last ret */
682
51aff91a 683 snd_soc_component_module_put_when_close(component, substream, rollback);
244e2936
CK		 684 }
685
3672beb8 686 return ret;
244e2936
CK		 687}
688
b7898396
TI		 689static int soc_pcm_clean(struct snd_soc_pcm_runtime *rtd,
690 struct snd_pcm_substream *substream, int rollback)
62c86d1d 691{
62c86d1d 692 struct snd_soc_component *component;
c840f769 693 struct snd_soc_dai *dai;
62c86d1d
KM		 694 int i;
695
b7898396 696 snd_soc_dpcm_mutex_assert_held(rtd);
62c86d1d 697
1da681e5 698 if (!rollback) {
140a4532 699 snd_soc_runtime_deactivate(rtd, substream->stream);
1da681e5
CL		 700 /* clear the corresponding DAIs parameters when going to be inactive */
701 for_each_rtd_dais(rtd, i, dai) {
702 if (snd_soc_dai_active(dai) == 0)
703 soc_pcm_set_dai_params(dai, NULL);
704
705 if (snd_soc_dai_stream_active(dai, substream->stream) == 0)
706 snd_soc_dai_digital_mute(dai, 1, substream->stream);
707 }
708 }
62c86d1d 709
c840f769 710 for_each_rtd_dais(rtd, i, dai)
140a4532 711 snd_soc_dai_shutdown(dai, substream, rollback);
62c86d1d 712
140a4532 713 snd_soc_link_shutdown(substream, rollback);
62c86d1d 714
140a4532 715 soc_pcm_components_close(substream, rollback);
62c86d1d 716
140a4532 717 snd_soc_pcm_component_pm_runtime_put(rtd, substream, rollback);
62c86d1d
KM		 718
719 for_each_rtd_components(rtd, i, component)
b3dea624 720 if (!snd_soc_component_active(component))
62c86d1d
KM		 721 pinctrl_pm_select_sleep_state(component->dev);
722
723 return 0;
724}
725
140a4532
KM		 726/*
727 * Called by ALSA when a PCM substream is closed. Private data can be
728 * freed here. The cpu DAI, codec DAI, machine and components are also
729 * shutdown.
730 */
b7898396
TI		 731static int __soc_pcm_close(struct snd_soc_pcm_runtime *rtd,
732 struct snd_pcm_substream *substream)
733{
734 return soc_pcm_clean(rtd, substream, 0);
735}
736
737/* PCM close ops for non-DPCM streams */
140a4532
KM		 738static int soc_pcm_close(struct snd_pcm_substream *substream)
739{
b7898396
TI		 740 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
741
742 snd_soc_dpcm_mutex_lock(rtd);
6bbabd28 743 __soc_pcm_close(rtd, substream);
b7898396
TI		 744 snd_soc_dpcm_mutex_unlock(rtd);
745 return 0;
140a4532
KM		 746}
747
c393281a
KM		 748static int soc_hw_sanity_check(struct snd_pcm_substream *substream)
749{
750 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
751 struct snd_pcm_hardware *hw = &substream->runtime->hw;
752 const char *name_cpu = soc_cpu_dai_name(rtd);
753 const char *name_codec = soc_codec_dai_name(rtd);
754 const char *err_msg;
755 struct device *dev = rtd->dev;
756
757 err_msg = "rates";
758 if (!hw->rates)
759 goto config_err;
760
761 err_msg = "formats";
762 if (!hw->formats)
763 goto config_err;
764
765 err_msg = "channels";
766 if (!hw->channels_min || !hw->channels_max ||
767 hw->channels_min > hw->channels_max)
768 goto config_err;
769
770 dev_dbg(dev, "ASoC: %s <-> %s info:\n", name_codec,
771 name_cpu);
772 dev_dbg(dev, "ASoC: rate mask 0x%x\n", hw->rates);
773 dev_dbg(dev, "ASoC: ch min %d max %d\n", hw->channels_min,
774 hw->channels_max);
775 dev_dbg(dev, "ASoC: rate min %d max %d\n", hw->rate_min,
776 hw->rate_max);
777
778 return 0;
779
780config_err:
781 dev_err(dev, "ASoC: %s <-> %s No matching %s\n",
782 name_codec, name_cpu, err_msg);
783 return -EINVAL;
784}
785
ddee627c
LG		 786/*
787 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
788 * then initialized and any private data can be allocated. This also calls
ef050bec 789 * startup for the cpu DAI, component, machine and codec DAI.
ddee627c 790 */
b7898396
TI		 791static int __soc_pcm_open(struct snd_soc_pcm_runtime *rtd,
792 struct snd_pcm_substream *substream)
ddee627c 793{
90be711e 794 struct snd_soc_component *component;
c840f769 795 struct snd_soc_dai *dai;
244e2936 796 int i, ret = 0;
ddee627c 797
b7898396
TI		 798 snd_soc_dpcm_mutex_assert_held(rtd);
799
76c39e86
KM		 800 for_each_rtd_components(rtd, i, component)
801 pinctrl_pm_select_default_state(component->dev);
90be711e 802
939a5cfb
KM		 803 ret = snd_soc_pcm_component_pm_runtime_get(rtd, substream);
804 if (ret < 0)
b7898396 805 goto err;
ddee627c 806
5d9fa03e
KM		 807 ret = soc_pcm_components_open(substream);
808 if (ret < 0)
140a4532 809 goto err;
5d9fa03e 810
7cf3c5b4 811 ret = snd_soc_link_startup(substream);
a5e6c109 812 if (ret < 0)
140a4532 813 goto err;
5d9fa03e 814
ddee627c 815 /* startup the audio subsystem */
c840f769
KM		 816 for_each_rtd_dais(rtd, i, dai) {
817 ret = snd_soc_dai_startup(dai, substream);
ce820145 818 if (ret < 0)
140a4532 819 goto err;
ddee627c
LG		 820 }
821
01d7584c
LG		 822 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
823 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
824 goto dynamic;
825
ddee627c 826 /* Check that the codec and cpu DAIs are compatible */
2e5894d7
BC		 827 soc_pcm_init_runtime_hw(substream);
828
68cbc557 829 soc_pcm_update_symmetry(substream);
62e5f676 830
c393281a
KM		 831 ret = soc_hw_sanity_check(substream);
832 if (ret < 0)
140a4532 833 goto err;
ddee627c 834
c8dd1fec 835 soc_pcm_apply_msb(substream);
58ba9b25 836
ddee627c 837 /* Symmetry only applies if we've already got an active stream. */
c840f769 838 for_each_rtd_dais(rtd, i, dai) {
f8fc9ec5
KM		 839 ret = soc_pcm_apply_symmetry(substream, dai);
840 if (ret != 0)
841 goto err;
ddee627c 842 }
01d7584c 843dynamic:
24894b76 844 snd_soc_runtime_activate(rtd, substream->stream);
8e7875ae 845 ret = 0;
140a4532 846err:
04110728 847 if (ret < 0)
b7898396 848 soc_pcm_clean(rtd, substream, 1);
d6652ef8 849
04110728 850 return soc_pcm_ret(rtd, ret);
ddee627c
LG		 851}
852
b7898396
TI		 853/* PCM open ops for non-DPCM streams */
854static int soc_pcm_open(struct snd_pcm_substream *substream)
855{
856 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
857 int ret;
858
859 snd_soc_dpcm_mutex_lock(rtd);
860 ret = __soc_pcm_open(rtd, substream);
861 snd_soc_dpcm_mutex_unlock(rtd);
862 return ret;
863}
864
ddee627c
LG		 865/*
866 * Called by ALSA when the PCM substream is prepared, can set format, sample
867 * rate, etc. This function is non atomic and can be called multiple times,
868 * it can refer to the runtime info.
869 */
b7898396
TI		 870static int __soc_pcm_prepare(struct snd_soc_pcm_runtime *rtd,
871 struct snd_pcm_substream *substream)
ddee627c 872{
c840f769 873 struct snd_soc_dai *dai;
2e5894d7 874 int i, ret = 0;
ddee627c 875
b7898396 876 snd_soc_dpcm_mutex_assert_held(rtd);
ddee627c 877
7cf3c5b4 878 ret = snd_soc_link_prepare(substream);
a5e6c109 879 if (ret < 0)
44c1a75b 880 goto out;
ddee627c 881
4f39514f
KM		 882 ret = snd_soc_pcm_component_prepare(substream);
883 if (ret < 0)
884 goto out;
b8135864 885
d108c7fd 886 ret = snd_soc_pcm_dai_prepare(substream);
62462e01 887 if (ret < 0)
d108c7fd 888 goto out;
4beb8e10 889
ddee627c
LG		 890 /* cancel any delayed stream shutdown that is pending */
891 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
9bffb1fb
MLC		 892 rtd->pop_wait) {
893 rtd->pop_wait = 0;
ddee627c
LG		 894 cancel_delayed_work(&rtd->delayed_work);
895 }
896
d9b0951b
LG		 897 snd_soc_dapm_stream_event(rtd, substream->stream,
898 SND_SOC_DAPM_STREAM_START);
ddee627c 899
c840f769
KM		 900 for_each_rtd_dais(rtd, i, dai)
901 snd_soc_dai_digital_mute(dai, 0, substream->stream);
ddee627c
LG		 902
903out:
04110728 904 return soc_pcm_ret(rtd, ret);
ddee627c
LG		 905}
906
b7898396
TI		 907/* PCM prepare ops for non-DPCM streams */
908static int soc_pcm_prepare(struct snd_pcm_substream *substream)
909{
910 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
911 int ret;
912
913 snd_soc_dpcm_mutex_lock(rtd);
914 ret = __soc_pcm_prepare(rtd, substream);
915 snd_soc_dpcm_mutex_unlock(rtd);
916 return ret;
917}
918
2e5894d7
BC		 919static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params,
920 unsigned int mask)
921{
922 struct snd_interval *interval;
923 int channels = hweight_long(mask);
924
925 interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
926 interval->min = channels;
927 interval->max = channels;
928}
929
b7898396
TI		 930static int soc_pcm_hw_clean(struct snd_soc_pcm_runtime *rtd,
931 struct snd_pcm_substream *substream, int rollback)
ab49436e 932{
ab49436e
KM		 933 struct snd_soc_dai *dai;
934 int i;
935
b7898396 936 snd_soc_dpcm_mutex_assert_held(rtd);
ab49436e 937
a27b421f
RS		 938 /* run the stream event */
939 snd_soc_dapm_stream_stop(rtd, substream->stream);
940
ab49436e 941 /* free any machine hw params */
4662c596 942 snd_soc_link_hw_free(substream, rollback);
ab49436e
KM		 943
944 /* free any component resources */
4662c596 945 snd_soc_pcm_component_hw_free(substream, rollback);
ab49436e
KM		 946
947 /* now free hw params for the DAIs */
121966d0
KM		 948 for_each_rtd_dais(rtd, i, dai)
949 if (snd_soc_dai_stream_valid(dai, substream->stream))
950 snd_soc_dai_hw_free(dai, substream, rollback);
ab49436e 951
ab49436e
KM		 952 return 0;
953}
954
4662c596
KM		 955/*
956 * Frees resources allocated by hw_params, can be called multiple times
957 */
b7898396
TI		 958static int __soc_pcm_hw_free(struct snd_soc_pcm_runtime *rtd,
959 struct snd_pcm_substream *substream)
960{
961 return soc_pcm_hw_clean(rtd, substream, 0);
962}
963
964/* hw_free PCM ops for non-DPCM streams */
4662c596
KM		 965static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
966{
b7898396
TI		 967 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
968 int ret;
969
970 snd_soc_dpcm_mutex_lock(rtd);
971 ret = __soc_pcm_hw_free(rtd, substream);
972 snd_soc_dpcm_mutex_unlock(rtd);
973 return ret;
4662c596
KM		 974}
975
ddee627c
LG		 976/*
977 * Called by ALSA when the hardware params are set by application. This
978 * function can also be called multiple times and can allocate buffers
979 * (using snd_pcm_lib_* ). It's non-atomic.
980 */
b7898396
TI		 981static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd,
982 struct snd_pcm_substream *substream,
983 struct snd_pcm_hw_params *params)
ddee627c 984{
19bdcc7a 985 struct snd_soc_dai *cpu_dai;
0b7990e3 986 struct snd_soc_dai *codec_dai;
244e2936 987 int i, ret = 0;
ddee627c 988
b7898396 989 snd_soc_dpcm_mutex_assert_held(rtd);
5cca5951
SW		 990
991 ret = soc_pcm_params_symmetry(substream, params);
992 if (ret)
993 goto out;
994
7cf3c5b4 995 ret = snd_soc_link_hw_params(substream, params);
a5e6c109 996 if (ret < 0)
de9ad990 997 goto out;
ddee627c 998
a4be4187 999 for_each_rtd_codec_dais(rtd, i, codec_dai) {
2e5894d7 1000 struct snd_pcm_hw_params codec_params;
e15ff262 1001 unsigned int tdm_mask = snd_soc_dai_tdm_mask_get(codec_dai, substream->stream);
2e5894d7 1002
cde79035
RW		 1003 /*
1004 * Skip CODECs which don't support the current stream type,
1005 * the idea being that if a CODEC is not used for the currently
1006 * set up transfer direction, it should not need to be
1007 * configured, especially since the configuration used might
1008 * not even be supported by that CODEC. There may be cases
1009 * however where a CODEC needs to be set up although it is
1010 * actually not being used for the transfer, e.g. if a
1011 * capture-only CODEC is acting as an LRCLK and/or BCLK master
1012 * for the DAI link including a playback-only CODEC.
1013 * If this becomes necessary, we will have to augment the
1014 * machine driver setup with information on how to act, so
1015 * we can do the right thing here.
1016 */
1017 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
1018 continue;
1019
2e5894d7
BC		 1020 /* copy params for each codec */
1021 codec_params = *params;
1022
1023 /* fixup params based on TDM slot masks */
e15ff262
KM		 1024 if (tdm_mask)
1025 soc_pcm_codec_params_fixup(&codec_params, tdm_mask);
2e5894d7 1026
aa6166c2
KM		 1027 ret = snd_soc_dai_hw_params(codec_dai, substream,
1028 &codec_params);
93e6958a 1029 if(ret < 0)
4662c596 1030 goto out;
ddee627c 1031
2805b8bd 1032 soc_pcm_set_dai_params(codec_dai, &codec_params);
078a85f2 1033 snd_soc_dapm_update_dai(substream, &codec_params, codec_dai);
ddee627c
LG		 1034 }
1035
a4be4187 1036 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
ac950278
BL		 1037 struct snd_pcm_hw_params cpu_params;
1038 unsigned int ch_mask = 0;
1039 int j;
1040
0e9cf4c4
BL		 1041 /*
1042 * Skip CPUs which don't support the current stream
1043 * type. See soc_pcm_init_runtime_hw() for more details
1044 */
1045 if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
1046 continue;
1047
ac950278
BL		 1048 /* copy params for each cpu */
1049 cpu_params = *params;
1050
1051 if (!rtd->dai_link->codec_ch_maps)
1052 goto hw_params;
1053 /*
1054 * construct cpu channel mask by combining ch_mask of each
1055 * codec which maps to the cpu.
1056 */
1057 for_each_rtd_codec_dais(rtd, j, codec_dai) {
1058 if (rtd->dai_link->codec_ch_maps[j].connected_cpu_id == i)
1059 ch_mask |= rtd->dai_link->codec_ch_maps[j].ch_mask;
1060 }
1061
1062 /* fixup cpu channel number */
1063 if (ch_mask)
1064 soc_pcm_codec_params_fixup(&cpu_params, ch_mask);
1065
1066hw_params:
1067 ret = snd_soc_dai_hw_params(cpu_dai, substream, &cpu_params);
19bdcc7a 1068 if (ret < 0)
4662c596 1069 goto out;
ddee627c 1070
19bdcc7a 1071 /* store the parameters for each DAI */
ac950278
BL		 1072 soc_pcm_set_dai_params(cpu_dai, &cpu_params);
1073 snd_soc_dapm_update_dai(substream, &cpu_params, cpu_dai);
19bdcc7a 1074 }
ca58221d 1075
3a36a64a 1076 ret = snd_soc_pcm_component_hw_params(substream, params);
ddee627c 1077out:
04110728 1078 if (ret < 0)
b7898396 1079 soc_pcm_hw_clean(rtd, substream, 1);
ddee627c 1080
04110728 1081 return soc_pcm_ret(rtd, ret);
ddee627c
LG		 1082}
1083
b7898396
TI		 1084/* hw_params PCM ops for non-DPCM streams */
1085static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
1086 struct snd_pcm_hw_params *params)
1087{
1088 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
1089 int ret;
1090
1091 snd_soc_dpcm_mutex_lock(rtd);
1092 ret = __soc_pcm_hw_params(rtd, substream, params);
1093 snd_soc_dpcm_mutex_unlock(rtd);
1094 return ret;
1095}
1096
356caf66
KM		 1097#define TRIGGER_MAX 3
1098static int (* const trigger[][TRIGGER_MAX])(struct snd_pcm_substream *substream, int cmd, int rollback) = {
1099 [SND_SOC_TRIGGER_ORDER_DEFAULT] = {
1100 snd_soc_link_trigger,
1101 snd_soc_pcm_component_trigger,
1102 snd_soc_pcm_dai_trigger,
1103 },
1104 [SND_SOC_TRIGGER_ORDER_LDC] = {
1105 snd_soc_link_trigger,
1106 snd_soc_pcm_dai_trigger,
1107 snd_soc_pcm_component_trigger,
1108 },
1109};
1110
4378f1fb
PU		 1111static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1112{
59dd33f8 1113 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
54fc4b72 1114 struct snd_soc_component *component;
356caf66 1115 int ret = 0, r = 0, i;
6374f493 1116 int rollback = 0;
356caf66
KM		 1117 int start = 0, stop = 0;
1118
1119 /*
1120 * select START/STOP sequence
1121 */
1122 for_each_rtd_components(rtd, i, component) {
1123 if (component->driver->trigger_start)
1124 start = component->driver->trigger_start;
1125 if (component->driver->trigger_stop)
1126 stop = component->driver->trigger_stop;
1127 }
1128 if (rtd->dai_link->trigger_start)
1129 start = rtd->dai_link->trigger_start;
1130 if (rtd->dai_link->trigger_stop)
1131 stop = rtd->dai_link->trigger_stop;
1132
1133 if (start < 0 || start >= SND_SOC_TRIGGER_ORDER_MAX ||
1134 stop < 0 || stop >= SND_SOC_TRIGGER_ORDER_MAX)
1135 return -EINVAL;
4378f1fb 1136
356caf66
KM		 1137 /*
1138 * START
1139 */
4378f1fb
PU		 1140 switch (cmd) {
1141 case SNDRV_PCM_TRIGGER_START:
1142 case SNDRV_PCM_TRIGGER_RESUME:
1143 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
356caf66
KM		 1144 for (i = 0; i < TRIGGER_MAX; i++) {
1145 r = trigger[start][i](substream, cmd, 0);
1146 if (r < 0)
54fc4b72 1147 break;
54fc4b72 1148 }
6374f493
KM		 1149 }
1150
356caf66
KM		 1151 /*
1152 * Rollback if START failed
1153 * find correspond STOP command
1154 */
1155 if (r < 0) {
1156 rollback = 1;
1157 ret = r;
6374f493
KM		 1158 switch (cmd) {
1159 case SNDRV_PCM_TRIGGER_START:
1160 cmd = SNDRV_PCM_TRIGGER_STOP;
1161 break;
1162 case SNDRV_PCM_TRIGGER_RESUME:
1163 cmd = SNDRV_PCM_TRIGGER_SUSPEND;
836367be 1164 break;
6374f493
KM		 1165 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1166 cmd = SNDRV_PCM_TRIGGER_PAUSE_PUSH;
1167 break;
1168 }
1169 }
836367be 1170
356caf66
KM		 1171 /*
1172 * STOP
1173 */
6374f493 1174 switch (cmd) {
4378f1fb
PU		 1175 case SNDRV_PCM_TRIGGER_STOP:
1176 case SNDRV_PCM_TRIGGER_SUSPEND:
1177 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
356caf66
KM		 1178 for (i = TRIGGER_MAX; i > 0; i--) {
1179 r = trigger[stop][i - 1](substream, cmd, rollback);
1180 if (r < 0)
1181 ret = r;
59dd33f8 1182 }
4378f1fb
PU		 1183 }
1184
1185 return ret;
1186}
1187
ddee627c
LG		 1188/*
1189 * soc level wrapper for pointer callback
ef050bec 1190 * If cpu_dai, codec_dai, component driver has the delay callback, then
dd894f4c 1191 * the runtime->delay will be updated via snd_soc_pcm_component/dai_delay().
ddee627c
LG		 1192 */
1193static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1194{
ddee627c
LG		 1195 struct snd_pcm_runtime *runtime = substream->runtime;
1196 snd_pcm_uframes_t offset = 0;
2e5894d7 1197 snd_pcm_sframes_t codec_delay = 0;
19bdcc7a 1198 snd_pcm_sframes_t cpu_delay = 0;
ddee627c 1199
0035e256 1200 offset = snd_soc_pcm_component_pointer(substream);
b8135864 1201
403f830e 1202 /* should be called *after* snd_soc_pcm_component_pointer() */
8544f08c 1203 snd_soc_pcm_dai_delay(substream, &cpu_delay, &codec_delay);
403f830e 1204 snd_soc_pcm_component_delay(substream, &cpu_delay, &codec_delay);
ddee627c 1205
dd894f4c 1206 runtime->delay = cpu_delay + codec_delay;
ddee627c
LG		 1207
1208 return offset;
1209}
1210
01d7584c
LG		 1211/* connect a FE and BE */
1212static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1213 struct snd_soc_pcm_runtime *be, int stream)
1214{
bbf7d3b1
PLB		 1215 struct snd_pcm_substream *fe_substream;
1216 struct snd_pcm_substream *be_substream;
01d7584c 1217 struct snd_soc_dpcm *dpcm;
b7898396
TI		 1218
1219 snd_soc_dpcm_mutex_assert_held(fe);
01d7584c
LG		 1220
1221 /* only add new dpcms */
8d6258a4 1222 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1223 if (dpcm->be == be && dpcm->fe == fe)
1224 return 0;
1225 }
1226
bbf7d3b1
PLB		 1227 fe_substream = snd_soc_dpcm_get_substream(fe, stream);
1228 be_substream = snd_soc_dpcm_get_substream(be, stream);
1229
1230 if (!fe_substream->pcm->nonatomic && be_substream->pcm->nonatomic) {
1231 dev_err(be->dev, "%s: FE is atomic but BE is nonatomic, invalid configuration\n",
1232 __func__);
1233 return -EINVAL;
1234 }
1235 if (fe_substream->pcm->nonatomic && !be_substream->pcm->nonatomic) {
4ccf0949 1236 dev_dbg(be->dev, "FE is nonatomic but BE is not, forcing BE as nonatomic\n");
bbf7d3b1
PLB		 1237 be_substream->pcm->nonatomic = 1;
1238 }
1239
fb6d679f 1240 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
01d7584c
LG		 1241 if (!dpcm)
1242 return -ENOMEM;
1243
1244 dpcm->be = be;
1245 dpcm->fe = fe;
01d7584c 1246 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
b7898396 1247 snd_soc_dpcm_stream_lock_irq(fe, stream);
01d7584c
LG		 1248 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1249 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
b7898396 1250 snd_soc_dpcm_stream_unlock_irq(fe, stream);
01d7584c 1251
7cc302d2 1252 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
01d7584c
LG		 1253 stream ? "capture" : "playback", fe->dai_link->name,
1254 stream ? "<-" : "->", be->dai_link->name);
1255
154dae87
KM		 1256 dpcm_create_debugfs_state(dpcm, stream);
1257
01d7584c
LG		 1258 return 1;
1259}
1260
1261/* reparent a BE onto another FE */
1262static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1263 struct snd_soc_pcm_runtime *be, int stream)
1264{
1265 struct snd_soc_dpcm *dpcm;
1266 struct snd_pcm_substream *fe_substream, *be_substream;
1267
1268 /* reparent if BE is connected to other FEs */
1269 if (!be->dpcm[stream].users)
1270 return;
1271
1272 be_substream = snd_soc_dpcm_get_substream(be, stream);
db8f91d4
SRM		 1273 if (!be_substream)
1274 return;
01d7584c 1275
d2e24d64 1276 for_each_dpcm_fe(be, stream, dpcm) {
01d7584c
LG		 1277 if (dpcm->fe == fe)
1278 continue;
1279
7cc302d2 1280 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
01d7584c
LG		 1281 stream ? "capture" : "playback",
1282 dpcm->fe->dai_link->name,
1283 stream ? "<-" : "->", dpcm->be->dai_link->name);
1284
1285 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1286 be_substream->runtime = fe_substream->runtime;
1287 break;
1288 }
1289}
1290
1291/* disconnect a BE and FE */
23607025 1292void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1293{
1294 struct snd_soc_dpcm *dpcm, *d;
9f620684 1295 LIST_HEAD(deleted_dpcms);
01d7584c 1296
b7898396
TI		 1297 snd_soc_dpcm_mutex_assert_held(fe);
1298
1299 snd_soc_dpcm_stream_lock_irq(fe, stream);
8d6258a4 1300 for_each_dpcm_be_safe(fe, stream, dpcm, d) {
103d84a3 1301 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
01d7584c
LG		 1302 stream ? "capture" : "playback",
1303 dpcm->be->dai_link->name);
1304
1305 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1306 continue;
1307
7cc302d2 1308 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
01d7584c
LG		 1309 stream ? "capture" : "playback", fe->dai_link->name,
1310 stream ? "<-" : "->", dpcm->be->dai_link->name);
1311
1312 /* BEs still alive need new FE */
1313 dpcm_be_reparent(fe, dpcm->be, stream);
1314
1315 list_del(&dpcm->list_be);
9f620684
TI		 1316 list_move(&dpcm->list_fe, &deleted_dpcms);
1317 }
1318 snd_soc_dpcm_stream_unlock_irq(fe, stream);
1319
1320 while (!list_empty(&deleted_dpcms)) {
1321 dpcm = list_first_entry(&deleted_dpcms, struct snd_soc_dpcm,
1322 list_fe);
01d7584c 1323 list_del(&dpcm->list_fe);
9f620684 1324 dpcm_remove_debugfs_state(dpcm);
01d7584c
LG		 1325 kfree(dpcm);
1326 }
1327}
1328
1329/* get BE for DAI widget and stream */
1330static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1331 struct snd_soc_dapm_widget *widget, int stream)
1332{
1333 struct snd_soc_pcm_runtime *be;
93597fae 1334 struct snd_soc_dapm_widget *w;
7afecb30 1335 struct snd_soc_dai *dai;
1a497983 1336 int i;
01d7584c 1337
3c146465
LG		 1338 dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);
1339
93597fae 1340 for_each_card_rtds(card, be) {
01d7584c 1341
93597fae
KM		 1342 if (!be->dai_link->no_pcm)
1343 continue;
35ea0655 1344
75459065
TI		 1345 if (!snd_soc_dpcm_get_substream(be, stream))
1346 continue;
1347
c840f769 1348 for_each_rtd_dais(be, i, dai) {
19bdcc7a 1349 w = snd_soc_dai_get_widget(dai, stream);
3c146465 1350
19bdcc7a
SN		 1351 dev_dbg(card->dev, "ASoC: try BE : %s\n",
1352 w ? w->name : "(not set)");
2e5894d7 1353
19bdcc7a
SN		 1354 if (w == widget)
1355 return be;
1356 }
01d7584c
LG		 1357 }
1358
9d6ee365 1359 /* Widget provided is not a BE */
01d7584c
LG		 1360 return NULL;
1361}
1362
5edcf2a3 1363int widget_in_list(struct snd_soc_dapm_widget_list *list,
01d7584c
LG		 1364 struct snd_soc_dapm_widget *widget)
1365{
09e88f8a 1366 struct snd_soc_dapm_widget *w;
01d7584c
LG		 1367 int i;
1368
09e88f8a
KM		 1369 for_each_dapm_widgets(list, i, w)
1370 if (widget == w)
01d7584c 1371 return 1;
01d7584c
LG		 1372
1373 return 0;
1374}
5edcf2a3 1375EXPORT_SYMBOL_GPL(widget_in_list);
01d7584c 1376
d1a7af09 1377bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir)
5fdd022c
PS		 1378{
1379 struct snd_soc_card *card = widget->dapm->card;
1380 struct snd_soc_pcm_runtime *rtd;
c2cd8216 1381 int stream;
5fdd022c 1382
c2cd8216
KM		 1383 /* adjust dir to stream */
1384 if (dir == SND_SOC_DAPM_DIR_OUT)
1385 stream = SNDRV_PCM_STREAM_PLAYBACK;
1386 else
1387 stream = SNDRV_PCM_STREAM_CAPTURE;
5fdd022c 1388
027a4838
KM		 1389 rtd = dpcm_get_be(card, widget, stream);
1390 if (rtd)
1391 return true;
5fdd022c
PS		 1392
1393 return false;
1394}
d1a7af09 1395EXPORT_SYMBOL_GPL(dpcm_end_walk_at_be);
5fdd022c 1396
23607025 1397int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
1ce43acf 1398 int stream, struct snd_soc_dapm_widget_list **list)
01d7584c 1399{
c2233a26 1400 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
01d7584c
LG		 1401 int paths;
1402
3989ade2 1403 if (fe->dai_link->num_cpus > 1) {
6e1276a5
BL		 1404 dev_err(fe->dev,
1405 "%s doesn't support Multi CPU yet\n", __func__);
1406 return -EINVAL;
1407 }
1408
01d7584c 1409 /* get number of valid DAI paths and their widgets */
6742064a 1410 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
aa293777
SP		 1411 fe->card->component_chaining ?
1412 NULL : dpcm_end_walk_at_be);
01d7584c 1413
d479f00b
KM		 1414 if (paths > 0)
1415 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
01d7584c 1416 stream ? "capture" : "playback");
d479f00b
KM		 1417 else if (paths == 0)
1418 dev_dbg(fe->dev, "ASoC: %s no valid %s path\n", fe->dai_link->name,
1419 stream ? "capture" : "playback");
01d7584c 1420
01d7584c
LG		 1421 return paths;
1422}
1423
52645e33
KM		 1424void dpcm_path_put(struct snd_soc_dapm_widget_list **list)
1425{
1426 snd_soc_dapm_dai_free_widgets(list);
1427}
1428
8cce6569
GL		 1429static bool dpcm_be_is_active(struct snd_soc_dpcm *dpcm, int stream,
1430 struct snd_soc_dapm_widget_list *list)
01d7584c 1431{
7afecb30 1432 struct snd_soc_dai *dai;
8cce6569
GL		 1433 unsigned int i;
1434
c840f769
KM		 1435 /* is there a valid DAI widget for this BE */
1436 for_each_rtd_dais(dpcm->be, i, dai) {
7931df9b 1437 struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(dai, stream);
8cce6569
GL		 1438
1439 /*
c840f769 1440 * The BE is pruned only if none of the dai
8cce6569
GL		 1441 * widgets are in the active list.
1442 */
1443 if (widget && widget_in_list(list, widget))
1444 return true;
1445 }
1446
8cce6569
GL		 1447 return false;
1448}
1449
1450static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1451 struct snd_soc_dapm_widget_list **list_)
1452{
1453 struct snd_soc_dpcm *dpcm;
01d7584c
LG		 1454 int prune = 0;
1455
1456 /* Destroy any old FE <--> BE connections */
8d6258a4 1457 for_each_dpcm_be(fe, stream, dpcm) {
8cce6569 1458 if (dpcm_be_is_active(dpcm, stream, *list_))
bed646dc 1459 continue;
01d7584c 1460
103d84a3 1461 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
01d7584c
LG		 1462 stream ? "capture" : "playback",
1463 dpcm->be->dai_link->name, fe->dai_link->name);
1464 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
a7e20444 1465 dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_BE);
01d7584c
LG		 1466 prune++;
1467 }
1468
103d84a3 1469 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
01d7584c
LG		 1470 return prune;
1471}
1472
1473static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1474 struct snd_soc_dapm_widget_list **list_)
1475{
1476 struct snd_soc_card *card = fe->card;
1477 struct snd_soc_dapm_widget_list *list = *list_;
1478 struct snd_soc_pcm_runtime *be;
09e88f8a 1479 struct snd_soc_dapm_widget *widget;
0d3a5178 1480 struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream);
01d7584c
LG		 1481 int i, new = 0, err;
1482
6932b20d 1483 /* don't connect if FE is not running */
0d3a5178 1484 if (!fe_substream->runtime && !fe->fe_compr)
6932b20d
KM		 1485 return new;
1486
01d7584c 1487 /* Create any new FE <--> BE connections */
09e88f8a 1488 for_each_dapm_widgets(list, i, widget) {
01d7584c 1489
09e88f8a 1490 switch (widget->id) {
4616274d 1491 case snd_soc_dapm_dai_in:
c5b8540d
KC		 1492 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
1493 continue;
1494 break;
4616274d 1495 case snd_soc_dapm_dai_out:
c5b8540d
KC		 1496 if (stream != SNDRV_PCM_STREAM_CAPTURE)
1497 continue;
4616274d
MB		 1498 break;
1499 default:
01d7584c 1500 continue;
4616274d 1501 }
01d7584c
LG		 1502
1503 /* is there a valid BE rtd for this widget */
09e88f8a 1504 be = dpcm_get_be(card, widget, stream);
01d7584c 1505 if (!be) {
b6eabd24
SW		 1506 dev_dbg(fe->dev, "ASoC: no BE found for %s\n",
1507 widget->name);
01d7584c
LG		 1508 continue;
1509 }
1510
9609cfcd
PLB		 1511 /*
1512 * Filter for systems with 'component_chaining' enabled.
1513 * This helps to avoid unnecessary re-configuration of an
1514 * already active BE on such systems.
1515 */
1516 if (fe->card->component_chaining &&
1517 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
0c25db3f
SP		 1518 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1519 continue;
1520
01d7584c
LG		 1521 /* newly connected FE and BE */
1522 err = dpcm_be_connect(fe, be, stream);
1523 if (err < 0) {
103d84a3 1524 dev_err(fe->dev, "ASoC: can't connect %s\n",
09e88f8a 1525 widget->name);
01d7584c
LG		 1526 break;
1527 } else if (err == 0) /* already connected */
1528 continue;
1529
1530 /* new */
a7e20444 1531 dpcm_set_be_update_state(be, stream, SND_SOC_DPCM_UPDATE_BE);
01d7584c
LG		 1532 new++;
1533 }
1534
103d84a3 1535 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
01d7584c
LG		 1536 return new;
1537}
1538
1539/*
1540 * Find the corresponding BE DAIs that source or sink audio to this
1541 * FE substream.
1542 */
23607025 1543int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
01d7584c
LG		 1544 int stream, struct snd_soc_dapm_widget_list **list, int new)
1545{
1546 if (new)
1547 return dpcm_add_paths(fe, stream, list);
1548 else
1549 return dpcm_prune_paths(fe, stream, list);
1550}
1551
23607025 1552void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1553{
1554 struct snd_soc_dpcm *dpcm;
1555
8d6258a4 1556 for_each_dpcm_be(fe, stream, dpcm)
a7e20444 1557 dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1558}
1559
531590bb
KM		 1560void dpcm_be_dai_stop(struct snd_soc_pcm_runtime *fe, int stream,
1561 int do_hw_free, struct snd_soc_dpcm *last)
01d7584c
LG		 1562{
1563 struct snd_soc_dpcm *dpcm;
1564
1565 /* disable any enabled and non active backends */
8d6258a4 1566 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1567 struct snd_soc_pcm_runtime *be = dpcm->be;
1568 struct snd_pcm_substream *be_substream =
1569 snd_soc_dpcm_get_substream(be, stream);
1570
531590bb
KM		 1571 if (dpcm == last)
1572 return;
1573
1574 /* is this op for this BE ? */
1575 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1576 continue;
1577
1db19c15 1578 if (be->dpcm[stream].users == 0) {
103d84a3 1579 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
01d7584c
LG		 1580 stream ? "capture" : "playback",
1581 be->dpcm[stream].state);
1db19c15
KM		 1582 continue;
1583 }
01d7584c
LG		 1584
1585 if (--be->dpcm[stream].users != 0)
1586 continue;
1587
531590bb
KM		 1588 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) {
1589 if (!do_hw_free)
1590 continue;
1591
1592 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) {
b7898396 1593 __soc_pcm_hw_free(be, be_substream);
531590bb
KM		 1594 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
1595 }
1596 }
01d7584c 1597
b7898396 1598 __soc_pcm_close(be, be_substream);
01d7584c
LG		 1599 be_substream->runtime = NULL;
1600 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1601 }
1602}
1603
23607025 1604int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c 1605{
0d3a5178 1606 struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream);
06aaeb87 1607 struct snd_soc_pcm_runtime *be;
01d7584c
LG		 1608 struct snd_soc_dpcm *dpcm;
1609 int err, count = 0;
1610
1611 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
8d6258a4 1612 for_each_dpcm_be(fe, stream, dpcm) {
06aaeb87 1613 struct snd_pcm_substream *be_substream;
01d7584c 1614
06aaeb87
KM		 1615 be = dpcm->be;
1616 be_substream = snd_soc_dpcm_get_substream(be, stream);
01d7584c 1617
2062b4c5
RKAL		 1618 if (!be_substream) {
1619 dev_err(be->dev, "ASoC: no backend %s stream\n",
1620 stream ? "capture" : "playback");
1621 continue;
1622 }
1623
01d7584c
LG		 1624 /* is this op for this BE ? */
1625 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1626 continue;
1627
1628 /* first time the dpcm is open ? */
1db19c15 1629 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) {
103d84a3 1630 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
01d7584c
LG		 1631 stream ? "capture" : "playback",
1632 be->dpcm[stream].state);
1db19c15
KM		 1633 continue;
1634 }
01d7584c
LG		 1635
1636 if (be->dpcm[stream].users++ != 0)
1637 continue;
1638
1639 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1640 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1641 continue;
1642
2062b4c5
RKAL		 1643 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1644 stream ? "capture" : "playback", be->dai_link->name);
01d7584c 1645
0d3a5178 1646 be_substream->runtime = fe_substream->runtime;
b7898396 1647 err = __soc_pcm_open(be, be_substream);
01d7584c 1648 if (err < 0) {
01d7584c
LG		 1649 be->dpcm[stream].users--;
1650 if (be->dpcm[stream].users < 0)
103d84a3 1651 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
01d7584c
LG		 1652 stream ? "capture" : "playback",
1653 be->dpcm[stream].state);
1654
1655 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1656 goto unwind;
1657 }
848aedfd 1658 be->dpcm[stream].be_start = 0;
01d7584c
LG		 1659 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1660 count++;
1661 }
1662
1663 return count;
1664
1665unwind:
531590bb 1666 dpcm_be_dai_startup_rollback(fe, stream, dpcm);
01d7584c 1667
04110728 1668 return soc_pcm_ret(fe, err);
01d7584c
LG		 1669}
1670
5f53898a
KM		 1671static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream)
1672{
1673 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
1674 struct snd_pcm_runtime *runtime = substream->runtime;
1675 struct snd_pcm_hardware *hw = &runtime->hw;
1676 struct snd_soc_dai *dai;
1677 int stream = substream->stream;
083a25b1 1678 u64 formats = hw->formats;
5f53898a
KM		 1679 int i;
1680
1681 soc_pcm_hw_init(hw);
1682
083a25b1
SW		 1683 if (formats)
1684 hw->formats &= formats;
1685
5f53898a
KM		 1686 for_each_rtd_cpu_dais(fe, i, dai) {
1687 struct snd_soc_pcm_stream *cpu_stream;
1688
1689 /*
1690 * Skip CPUs which don't support the current stream
1691 * type. See soc_pcm_init_runtime_hw() for more details
1692 */
1693 if (!snd_soc_dai_stream_valid(dai, stream))
1694 continue;
1695
1696 cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream);
1697
1698 soc_pcm_hw_update_rate(hw, cpu_stream);
1699 soc_pcm_hw_update_chan(hw, cpu_stream);
1700 soc_pcm_hw_update_format(hw, cpu_stream);
1701 }
1702
1703}
1704
1b8cb123 1705static void dpcm_runtime_setup_be_format(struct snd_pcm_substream *substream)
b073ed4e 1706{
0ceef681 1707 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
1b8cb123 1708 struct snd_pcm_runtime *runtime = substream->runtime;
4b260f42 1709 struct snd_pcm_hardware *hw = &runtime->hw;
b073ed4e 1710 struct snd_soc_dpcm *dpcm;
7afecb30 1711 struct snd_soc_dai *dai;
b073ed4e
KM		 1712 int stream = substream->stream;
1713
1714 if (!fe->dai_link->dpcm_merged_format)
435ffb76 1715 return;
b073ed4e
KM		 1716
1717 /*
1718 * It returns merged BE codec format
1719 * if FE want to use it (= dpcm_merged_format)
1720 */
1721
8d6258a4 1722 for_each_dpcm_be(fe, stream, dpcm) {
b073ed4e 1723 struct snd_soc_pcm_runtime *be = dpcm->be;
b073ed4e
KM		 1724 struct snd_soc_pcm_stream *codec_stream;
1725 int i;
1726
a4be4187 1727 for_each_rtd_codec_dais(be, i, dai) {
4febced1
JB		 1728 /*
1729 * Skip CODECs which don't support the current stream
1730 * type. See soc_pcm_init_runtime_hw() for more details
1731 */
7afecb30 1732 if (!snd_soc_dai_stream_valid(dai, stream))
4febced1
JB		 1733 continue;
1734
acf253c1 1735 codec_stream = snd_soc_dai_get_pcm_stream(dai, stream);
b073ed4e 1736
debc71f2 1737 soc_pcm_hw_update_format(hw, codec_stream);
b073ed4e
KM		 1738 }
1739 }
b073ed4e
KM		 1740}
1741
1b8cb123 1742static void dpcm_runtime_setup_be_chan(struct snd_pcm_substream *substream)
f4c277b8 1743{
0ceef681 1744 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
1b8cb123 1745 struct snd_pcm_runtime *runtime = substream->runtime;
4b260f42 1746 struct snd_pcm_hardware *hw = &runtime->hw;
f4c277b8
JW		 1747 struct snd_soc_dpcm *dpcm;
1748 int stream = substream->stream;
1749
1750 if (!fe->dai_link->dpcm_merged_chan)
1751 return;
1752
f4c277b8
JW		 1753 /*
1754 * It returns merged BE codec channel;
1755 * if FE want to use it (= dpcm_merged_chan)
1756 */
1757
8d6258a4 1758 for_each_dpcm_be(fe, stream, dpcm) {
f4c277b8 1759 struct snd_soc_pcm_runtime *be = dpcm->be;
4f2bd18b 1760 struct snd_soc_pcm_stream *cpu_stream;
19bdcc7a
SN		 1761 struct snd_soc_dai *dai;
1762 int i;
4f2bd18b 1763
a4be4187 1764 for_each_rtd_cpu_dais(be, i, dai) {
0e9cf4c4
BL		 1765 /*
1766 * Skip CPUs which don't support the current stream
1767 * type. See soc_pcm_init_runtime_hw() for more details
1768 */
1769 if (!snd_soc_dai_stream_valid(dai, stream))
1770 continue;
1771
19bdcc7a 1772 cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream);
4f2bd18b 1773
6cb56a45 1774 soc_pcm_hw_update_chan(hw, cpu_stream);
19bdcc7a 1775 }
4f2bd18b
JB		 1776
1777 /*
1778 * chan min/max cannot be enforced if there are multiple CODEC
1779 * DAIs connected to a single CPU DAI, use CPU DAI's directly
1780 */
3989ade2 1781 if (be->dai_link->num_codecs == 1) {
9bdc573d
KM		 1782 struct snd_soc_pcm_stream *codec_stream = snd_soc_dai_get_pcm_stream(
1783 asoc_rtd_to_codec(be, 0), stream);
f4c277b8 1784
6cb56a45 1785 soc_pcm_hw_update_chan(hw, codec_stream);
f4c277b8
JW		 1786 }
1787 }
1788}
1789
1b8cb123 1790static void dpcm_runtime_setup_be_rate(struct snd_pcm_substream *substream)
baacd8d1 1791{
0ceef681 1792 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
1b8cb123 1793 struct snd_pcm_runtime *runtime = substream->runtime;
4b260f42 1794 struct snd_pcm_hardware *hw = &runtime->hw;
baacd8d1
JB		 1795 struct snd_soc_dpcm *dpcm;
1796 int stream = substream->stream;
1797
1798 if (!fe->dai_link->dpcm_merged_rate)
1799 return;
1800
1801 /*
1802 * It returns merged BE codec channel;
1803 * if FE want to use it (= dpcm_merged_chan)
1804 */
1805
8d6258a4 1806 for_each_dpcm_be(fe, stream, dpcm) {
baacd8d1 1807 struct snd_soc_pcm_runtime *be = dpcm->be;
c840f769 1808 struct snd_soc_pcm_stream *pcm;
7afecb30 1809 struct snd_soc_dai *dai;
baacd8d1
JB		 1810 int i;
1811
c840f769 1812 for_each_rtd_dais(be, i, dai) {
baacd8d1 1813 /*
c840f769 1814 * Skip DAIs which don't support the current stream
baacd8d1
JB		 1815 * type. See soc_pcm_init_runtime_hw() for more details
1816 */
7afecb30 1817 if (!snd_soc_dai_stream_valid(dai, stream))
baacd8d1
JB		 1818 continue;
1819
c840f769 1820 pcm = snd_soc_dai_get_pcm_stream(dai, stream);
baacd8d1 1821
f6c04af5 1822 soc_pcm_hw_update_rate(hw, pcm);
baacd8d1
JB		 1823 }
1824 }
1825}
1826
906c7d69
PL		 1827static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
1828 int stream)
1829{
1830 struct snd_soc_dpcm *dpcm;
0ceef681 1831 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream);
19bdcc7a 1832 struct snd_soc_dai *fe_cpu_dai;
12ffd726 1833 int err = 0;
19bdcc7a 1834 int i;
906c7d69
PL		 1835
1836 /* apply symmetry for FE */
68cbc557 1837 soc_pcm_update_symmetry(fe_substream);
906c7d69 1838
a4be4187 1839 for_each_rtd_cpu_dais (fe, i, fe_cpu_dai) {
19bdcc7a 1840 /* Symmetry only applies if we've got an active stream. */
f8fc9ec5
KM		 1841 err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
1842 if (err < 0)
bbd2bac8 1843 goto error;
906c7d69
PL		 1844 }
1845
1846 /* apply symmetry for BE */
8d6258a4 1847 for_each_dpcm_be(fe, stream, dpcm) {
906c7d69
PL		 1848 struct snd_soc_pcm_runtime *be = dpcm->be;
1849 struct snd_pcm_substream *be_substream =
1850 snd_soc_dpcm_get_substream(be, stream);
6246f283 1851 struct snd_soc_pcm_runtime *rtd;
c840f769 1852 struct snd_soc_dai *dai;
906c7d69 1853
6246f283
JB		 1854 /* A backend may not have the requested substream */
1855 if (!be_substream)
1856 continue;
1857
0ceef681 1858 rtd = asoc_substream_to_rtd(be_substream);
f1176614
JK		 1859 if (rtd->dai_link->be_hw_params_fixup)
1860 continue;
1861
68cbc557 1862 soc_pcm_update_symmetry(be_substream);
906c7d69
PL		 1863
1864 /* Symmetry only applies if we've got an active stream. */
c840f769 1865 for_each_rtd_dais(rtd, i, dai) {
f8fc9ec5
KM		 1866 err = soc_pcm_apply_symmetry(fe_substream, dai);
1867 if (err < 0)
bbd2bac8 1868 goto error;
906c7d69
PL		 1869 }
1870 }
bbd2bac8 1871error:
04110728 1872 return soc_pcm_ret(fe, err);
906c7d69
PL		 1873}
1874
01d7584c
LG		 1875static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1876{
0ceef681 1877 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream);
01d7584c
LG		 1878 int stream = fe_substream->stream, ret = 0;
1879
ea9d0d77 1880 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 1881
25c2f515 1882 ret = dpcm_be_dai_startup(fe, stream);
06aaeb87 1883 if (ret < 0)
01d7584c 1884 goto be_err;
01d7584c 1885
103d84a3 1886 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
01d7584c
LG		 1887
1888 /* start the DAI frontend */
b7898396 1889 ret = __soc_pcm_open(fe, fe_substream);
e4b044f4 1890 if (ret < 0)
01d7584c 1891 goto unwind;
01d7584c
LG		 1892
1893 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1894
4fe28461
KM		 1895 dpcm_runtime_setup_fe(fe_substream);
1896
1897 dpcm_runtime_setup_be_format(fe_substream);
1898 dpcm_runtime_setup_be_chan(fe_substream);
1899 dpcm_runtime_setup_be_rate(fe_substream);
01d7584c 1900
906c7d69 1901 ret = dpcm_apply_symmetry(fe_substream, stream);
01d7584c
LG		 1902
1903unwind:
8a01fbf0
KM		 1904 if (ret < 0)
1905 dpcm_be_dai_startup_unwind(fe, stream);
01d7584c 1906be_err:
ea9d0d77 1907 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
06aaeb87 1908
04110728 1909 return soc_pcm_ret(fe, ret);
01d7584c
LG		 1910}
1911
01d7584c
LG		 1912static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
1913{
0ceef681 1914 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
01d7584c
LG		 1915 int stream = substream->stream;
1916
b7898396
TI		 1917 snd_soc_dpcm_mutex_assert_held(fe);
1918
ea9d0d77 1919 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 1920
1921 /* shutdown the BEs */
25c2f515 1922 dpcm_be_dai_shutdown(fe, stream);
01d7584c 1923
103d84a3 1924 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
01d7584c
LG		 1925
1926 /* now shutdown the frontend */
b7898396 1927 __soc_pcm_close(fe, substream);
01d7584c 1928
bb9dd3ce
RS		 1929 /* run the stream stop event */
1930 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
1931
01d7584c 1932 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
ea9d0d77 1933 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c
LG		 1934 return 0;
1935}
1936
f52366e6 1937void dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 1938{
1939 struct snd_soc_dpcm *dpcm;
1940
1941 /* only hw_params backends that are either sinks or sources
1942 * to this frontend DAI */
8d6258a4 1943 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 1944
1945 struct snd_soc_pcm_runtime *be = dpcm->be;
1946 struct snd_pcm_substream *be_substream =
1947 snd_soc_dpcm_get_substream(be, stream);
1948
1949 /* is this op for this BE ? */
1950 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1951 continue;
1952
1953 /* only free hw when no longer used - check all FEs */
1954 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
1955 continue;
1956
36fba62c
QZ		 1957 /* do not free hw if this BE is used by other FE */
1958 if (be->dpcm[stream].users > 1)
1959 continue;
1960
01d7584c
LG		 1961 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
1962 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
1963 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
08b27848 1964 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
5e82d2be
VK		 1965 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
1966 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
01d7584c
LG		 1967 continue;
1968
103d84a3 1969 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
94d215cc 1970 be->dai_link->name);
01d7584c 1971
b7898396 1972 __soc_pcm_hw_free(be, be_substream);
01d7584c
LG		 1973
1974 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
1975 }
01d7584c
LG		 1976}
1977
45c0a188 1978static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
01d7584c 1979{
0ceef681 1980 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
f52366e6 1981 int stream = substream->stream;
01d7584c 1982
b7898396 1983 snd_soc_dpcm_mutex_lock(fe);
ea9d0d77 1984 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 1985
103d84a3 1986 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
01d7584c
LG		 1987
1988 /* call hw_free on the frontend */
b7898396 1989 soc_pcm_hw_clean(fe, substream, 0);
01d7584c
LG		 1990
1991 /* only hw_params backends that are either sinks or sources
1992 * to this frontend DAI */
f52366e6 1993 dpcm_be_dai_hw_free(fe, stream);
01d7584c
LG		 1994
1995 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
ea9d0d77 1996 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
01d7584c 1997
b7898396 1998 snd_soc_dpcm_mutex_unlock(fe);
01d7584c
LG		 1999 return 0;
2000}
2001
23607025 2002int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c 2003{
33b6b94f
KM		 2004 struct snd_soc_pcm_runtime *be;
2005 struct snd_pcm_substream *be_substream;
01d7584c
LG		 2006 struct snd_soc_dpcm *dpcm;
2007 int ret;
2008
8d6258a4 2009 for_each_dpcm_be(fe, stream, dpcm) {
25106550
KM		 2010 struct snd_pcm_hw_params hw_params;
2011
33b6b94f
KM		 2012 be = dpcm->be;
2013 be_substream = snd_soc_dpcm_get_substream(be, stream);
01d7584c
LG		 2014
2015 /* is this op for this BE ? */
2016 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2017 continue;
2018
01d7584c 2019 /* copy params for each dpcm */
25106550 2020 memcpy(&hw_params, &fe->dpcm[stream].hw_params,
01d7584c
LG		 2021 sizeof(struct snd_pcm_hw_params));
2022
2023 /* perform any hw_params fixups */
25106550 2024 ret = snd_soc_link_be_hw_params_fixup(be, &hw_params);
0cbbf8a0
KM		 2025 if (ret < 0)
2026 goto unwind;
01d7584c 2027
ae061d2a 2028 /* copy the fixed-up hw params for BE dai */
25106550 2029 memcpy(&be->dpcm[stream].hw_params, &hw_params,
ae061d2a
LY		 2030 sizeof(struct snd_pcm_hw_params));
2031
b0639bd2
KM		 2032 /* only allow hw_params() if no connected FEs are running */
2033 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
2034 continue;
2035
2036 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2037 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2038 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
2039 continue;
2040
2041 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
94d215cc 2042 be->dai_link->name);
b0639bd2 2043
25106550 2044 ret = __soc_pcm_hw_params(be, be_substream, &hw_params);
cb11f79b 2045 if (ret < 0)
01d7584c 2046 goto unwind;
01d7584c
LG		 2047
2048 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2049 }
2050 return 0;
2051
2052unwind:
33b6b94f
KM		 2053 dev_dbg(fe->dev, "ASoC: %s() failed at %s (%d)\n",
2054 __func__, be->dai_link->name, ret);
2055
01d7584c 2056 /* disable any enabled and non active backends */
8d6258a4 2057 for_each_dpcm_be_rollback(fe, stream, dpcm) {
33b6b94f
KM		 2058 be = dpcm->be;
2059 be_substream = snd_soc_dpcm_get_substream(be, stream);
01d7584c
LG		 2060
2061 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2062 continue;
2063
2064 /* only allow hw_free() if no connected FEs are running */
2065 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2066 continue;
2067
2068 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2069 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2070 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2071 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2072 continue;
2073
b7898396 2074 __soc_pcm_hw_free(be, be_substream);
01d7584c
LG		 2075 }
2076
2077 return ret;
2078}
2079
45c0a188
MB		 2080static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
2081 struct snd_pcm_hw_params *params)
01d7584c 2082{
0ceef681 2083 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
01d7584c
LG		 2084 int ret, stream = substream->stream;
2085
b7898396 2086 snd_soc_dpcm_mutex_lock(fe);
ea9d0d77 2087 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c 2088
25c2f515 2089 memcpy(&fe->dpcm[stream].hw_params, params,
01d7584c 2090 sizeof(struct snd_pcm_hw_params));
25c2f515 2091 ret = dpcm_be_dai_hw_params(fe, stream);
33b6b94f 2092 if (ret < 0)
01d7584c 2093 goto out;
01d7584c 2094
103d84a3 2095 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
01d7584c
LG		 2096 fe->dai_link->name, params_rate(params),
2097 params_channels(params), params_format(params));
2098
2099 /* call hw_params on the frontend */
b7898396 2100 ret = __soc_pcm_hw_params(fe, substream, params);
cb11f79b 2101 if (ret < 0)
01d7584c 2102 dpcm_be_dai_hw_free(fe, stream);
cb11f79b 2103 else
01d7584c
LG		 2104 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2105
2106out:
ea9d0d77 2107 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
b7898396 2108 snd_soc_dpcm_mutex_unlock(fe);
33b6b94f 2109
04110728 2110 return soc_pcm_ret(fe, ret);
01d7584c
LG		 2111}
2112
23607025 2113int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
45c0a188 2114 int cmd)
01d7584c 2115{
db3aa39c 2116 struct snd_soc_pcm_runtime *be;
9995c1d0 2117 bool pause_stop_transition;
01d7584c 2118 struct snd_soc_dpcm *dpcm;
b2ae8066 2119 unsigned long flags;
01d7584c
LG		 2120 int ret = 0;
2121
8d6258a4 2122 for_each_dpcm_be(fe, stream, dpcm) {
db3aa39c 2123 struct snd_pcm_substream *be_substream;
01d7584c 2124
db3aa39c
KM		 2125 be = dpcm->be;
2126 be_substream = snd_soc_dpcm_get_substream(be, stream);
01d7584c 2127
3c75c0ea 2128 snd_soc_dpcm_stream_lock_irqsave_nested(be, stream, flags);
b2ae8066 2129
01d7584c
LG		 2130 /* is this op for this BE ? */
2131 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
b2ae8066 2132 goto next;
01d7584c 2133
a9faca15
KM		 2134 dev_dbg(be->dev, "ASoC: trigger BE %s cmd %d\n",
2135 be->dai_link->name, cmd);
2136
01d7584c
LG		 2137 switch (cmd) {
2138 case SNDRV_PCM_TRIGGER_START:
848aedfd
PLB		 2139 if (!be->dpcm[stream].be_start &&
2140 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
21fca8bd 2141 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
3202e2f5 2142 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
b2ae8066 2143 goto next;
6479f758 2144
848aedfd
PLB		 2145 be->dpcm[stream].be_start++;
2146 if (be->dpcm[stream].be_start != 1)
2147 goto next;
2148
374b50e2
PLB		 2149 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED)
2150 ret = soc_pcm_trigger(be_substream,
2151 SNDRV_PCM_TRIGGER_PAUSE_RELEASE);
2152 else
2153 ret = soc_pcm_trigger(be_substream,
2154 SNDRV_PCM_TRIGGER_START);
848aedfd
PLB		 2155 if (ret) {
2156 be->dpcm[stream].be_start--;
b2ae8066 2157 goto next;
848aedfd 2158 }
01d7584c 2159
3202e2f5 2160 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
01d7584c
LG		 2161 break;
2162 case SNDRV_PCM_TRIGGER_RESUME:
3202e2f5 2163 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
b2ae8066 2164 goto next;
6479f758 2165
848aedfd
PLB		 2166 be->dpcm[stream].be_start++;
2167 if (be->dpcm[stream].be_start != 1)
2168 goto next;
2169
a9faca15 2170 ret = soc_pcm_trigger(be_substream, cmd);
848aedfd
PLB		 2171 if (ret) {
2172 be->dpcm[stream].be_start--;
b2ae8066 2173 goto next;
848aedfd 2174 }
01d7584c 2175
3202e2f5 2176 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
01d7584c
LG		 2177 break;
2178 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
3aa1e96a
PLB		 2179 if (!be->dpcm[stream].be_start &&
2180 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&
3aa1e96a 2181 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
b2ae8066 2182 goto next;
6479f758 2183
9995c1d0
PLB		 2184 fe->dpcm[stream].fe_pause = false;
2185 be->dpcm[stream].be_pause--;
2186
848aedfd
PLB		 2187 be->dpcm[stream].be_start++;
2188 if (be->dpcm[stream].be_start != 1)
2189 goto next;
2190
a9faca15 2191 ret = soc_pcm_trigger(be_substream, cmd);
848aedfd
PLB		 2192 if (ret) {
2193 be->dpcm[stream].be_start--;
b2ae8066 2194 goto next;
848aedfd 2195 }
01d7584c 2196
3202e2f5 2197 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
01d7584c
LG		 2198 break;
2199 case SNDRV_PCM_TRIGGER_STOP:
21fca8bd 2200 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&
3202e2f5 2201 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
b2ae8066 2202 goto next;
01d7584c 2203
848aedfd
PLB		 2204 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)
2205 be->dpcm[stream].be_start--;
2206
2207 if (be->dpcm[stream].be_start != 0)
b2ae8066 2208 goto next;
0c75fc71 2209
9995c1d0
PLB		 2210 pause_stop_transition = false;
2211 if (fe->dpcm[stream].fe_pause) {
2212 pause_stop_transition = true;
2213 fe->dpcm[stream].fe_pause = false;
2214 be->dpcm[stream].be_pause--;
2215 }
2216
2217 if (be->dpcm[stream].be_pause != 0)
2218 ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_PAUSE_PUSH);
2219 else
2220 ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_STOP);
2221
848aedfd
PLB		 2222 if (ret) {
2223 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)
2224 be->dpcm[stream].be_start++;
9995c1d0
PLB		 2225 if (pause_stop_transition) {
2226 fe->dpcm[stream].fe_pause = true;
2227 be->dpcm[stream].be_pause++;
2228 }
b2ae8066 2229 goto next;
848aedfd 2230 }
01d7584c 2231
9995c1d0
PLB		 2232 if (be->dpcm[stream].be_pause != 0)
2233 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2234 else
2235 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2236
01d7584c
LG		 2237 break;
2238 case SNDRV_PCM_TRIGGER_SUSPEND:
3202e2f5 2239 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
b2ae8066 2240 goto next;
01d7584c 2241
848aedfd
PLB		 2242 be->dpcm[stream].be_start--;
2243 if (be->dpcm[stream].be_start != 0)
b2ae8066 2244 goto next;
01d7584c 2245
a9faca15 2246 ret = soc_pcm_trigger(be_substream, cmd);
848aedfd
PLB		 2247 if (ret) {
2248 be->dpcm[stream].be_start++;
b2ae8066 2249 goto next;
848aedfd 2250 }
01d7584c 2251
3202e2f5 2252 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
01d7584c
LG		 2253 break;
2254 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
3202e2f5 2255 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
b2ae8066 2256 goto next;
01d7584c 2257
9995c1d0
PLB		 2258 fe->dpcm[stream].fe_pause = true;
2259 be->dpcm[stream].be_pause++;
2260
848aedfd
PLB		 2261 be->dpcm[stream].be_start--;
2262 if (be->dpcm[stream].be_start != 0)
b2ae8066 2263 goto next;
01d7584c 2264
a9faca15 2265 ret = soc_pcm_trigger(be_substream, cmd);
848aedfd
PLB		 2266 if (ret) {
2267 be->dpcm[stream].be_start++;
b2ae8066 2268 goto next;
848aedfd 2269 }
01d7584c 2270
3202e2f5 2271 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
01d7584c
LG		 2272 break;
2273 }
b2ae8066
TI		 2274next:
2275 snd_soc_dpcm_stream_unlock_irqrestore(be, stream, flags);
2276 if (ret)
2277 break;
01d7584c 2278 }
04110728 2279 return soc_pcm_ret(fe, ret);
01d7584c
LG		 2280}
2281EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
2282
acbf2774
RS		 2283static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream,
2284 int cmd, bool fe_first)
2285{
0ceef681 2286 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
acbf2774
RS		 2287 int ret;
2288
2289 /* call trigger on the frontend before the backend. */
2290 if (fe_first) {
2291 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
2292 fe->dai_link->name, cmd);
2293
2294 ret = soc_pcm_trigger(substream, cmd);
2295 if (ret < 0)
2296 return ret;
2297
2298 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2299 return ret;
2300 }
2301
2302 /* call trigger on the frontend after the backend. */
2303 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2304 if (ret < 0)
2305 return ret;
2306
2307 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
2308 fe->dai_link->name, cmd);
2309
2310 ret = soc_pcm_trigger(substream, cmd);
2311
2312 return ret;
2313}
2314
ea9d0d77 2315static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
01d7584c 2316{
0ceef681 2317 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
acbf2774
RS		 2318 int stream = substream->stream;
2319 int ret = 0;
01d7584c
LG		 2320 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2321
2322 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
2323
2324 switch (trigger) {
2325 case SND_SOC_DPCM_TRIGGER_PRE:
acbf2774
RS		 2326 switch (cmd) {
2327 case SNDRV_PCM_TRIGGER_START:
2328 case SNDRV_PCM_TRIGGER_RESUME:
2329 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
4c22b80f 2330 case SNDRV_PCM_TRIGGER_DRAIN:
acbf2774
RS		 2331 ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
2332 break;
2333 case SNDRV_PCM_TRIGGER_STOP:
2334 case SNDRV_PCM_TRIGGER_SUSPEND:
2335 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2336 ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
2337 break;
2338 default:
2339 ret = -EINVAL;
2340 break;
01d7584c 2341 }
01d7584c
LG		 2342 break;
2343 case SND_SOC_DPCM_TRIGGER_POST:
acbf2774
RS		 2344 switch (cmd) {
2345 case SNDRV_PCM_TRIGGER_START:
2346 case SNDRV_PCM_TRIGGER_RESUME:
2347 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
4c22b80f 2348 case SNDRV_PCM_TRIGGER_DRAIN:
acbf2774
RS		 2349 ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
2350 break;
2351 case SNDRV_PCM_TRIGGER_STOP:
2352 case SNDRV_PCM_TRIGGER_SUSPEND:
2353 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2354 ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
2355 break;
2356 default:
2357 ret = -EINVAL;
2358 break;
01d7584c 2359 }
01d7584c 2360 break;
07bf84aa
LG		 2361 case SND_SOC_DPCM_TRIGGER_BESPOKE:
2362 /* bespoke trigger() - handles both FE and BEs */
2363
103d84a3 2364 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
07bf84aa
LG		 2365 fe->dai_link->name, cmd);
2366
30819358 2367 ret = snd_soc_pcm_dai_bespoke_trigger(substream, cmd);
07bf84aa 2368 break;
01d7584c 2369 default:
103d84a3 2370 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
01d7584c
LG		 2371 fe->dai_link->name);
2372 ret = -EINVAL;
2373 goto out;
2374 }
2375
acbf2774
RS		 2376 if (ret < 0) {
2377 dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n",
2378 cmd, ret);
2379 goto out;
2380 }
2381
01d7584c
LG		 2382 switch (cmd) {
2383 case SNDRV_PCM_TRIGGER_START:
2384 case SNDRV_PCM_TRIGGER_RESUME:
2385 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2386 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2387 break;
2388 case SNDRV_PCM_TRIGGER_STOP:
2389 case SNDRV_PCM_TRIGGER_SUSPEND:
01d7584c
LG		 2390 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2391 break;
9f169b9f
PL		 2392 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2393 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2394 break;
01d7584c
LG		 2395 }
2396
2397out:
2398 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2399 return ret;
2400}
2401
ea9d0d77
TI		 2402static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2403{
0ceef681 2404 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
ea9d0d77
TI		 2405 int stream = substream->stream;
2406
2407 /* if FE's runtime_update is already set, we're in race;
2408 * process this trigger later at exit
2409 */
2410 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2411 fe->dpcm[stream].trigger_pending = cmd + 1;
2412 return 0; /* delayed, assuming it's successful */
2413 }
2414
2415 /* we're alone, let's trigger */
2416 return dpcm_fe_dai_do_trigger(substream, cmd);
2417}
2418
23607025 2419int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
01d7584c
LG		 2420{
2421 struct snd_soc_dpcm *dpcm;
2422 int ret = 0;
2423
8d6258a4 2424 for_each_dpcm_be(fe, stream, dpcm) {
01d7584c
LG		 2425
2426 struct snd_soc_pcm_runtime *be = dpcm->be;
2427 struct snd_pcm_substream *be_substream =
2428 snd_soc_dpcm_get_substream(be, stream);
2429
2430 /* is this op for this BE ? */
2431 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2432 continue;
2433
e123036b
RS		 2434 if (!snd_soc_dpcm_can_be_prepared(fe, be, stream))
2435 continue;
2436
01d7584c 2437 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
95f444dc 2438 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
5087a8f1
LY		 2439 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) &&
2440 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
01d7584c
LG		 2441 continue;
2442
103d84a3 2443 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
94d215cc 2444 be->dai_link->name);
01d7584c 2445
b7898396 2446 ret = __soc_pcm_prepare(be, be_substream);
dab7eeb4 2447 if (ret < 0)
01d7584c 2448 break;
01d7584c
LG		 2449
2450 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2451 }
273db971 2452
04110728 2453 return soc_pcm_ret(fe, ret);
01d7584c
LG		 2454}
2455
45c0a188 2456static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
01d7584c 2457{
0ceef681 2458 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream);
01d7584c
LG		 2459 int stream = substream->stream, ret = 0;
2460
b7898396 2461 snd_soc_dpcm_mutex_lock(fe);
01d7584c 2462
103d84a3 2463 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
01d7584c 2464
ea9d0d77 2465 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
01d7584c
LG		 2466
2467 /* there is no point preparing this FE if there are no BEs */
2468 if (list_empty(&fe->dpcm[stream].be_clients)) {
103d84a3 2469 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
01d7584c
LG		 2470 fe->dai_link->name);
2471 ret = -EINVAL;
2472 goto out;
2473 }
2474
25c2f515 2475 ret = dpcm_be_dai_prepare(fe, stream);
01d7584c
LG		 2476 if (ret < 0)
2477 goto out;
2478
2479 /* call prepare on the frontend */
b7898396 2480 ret = __soc_pcm_prepare(fe, substream);
dab7eeb4 2481 if (ret < 0)
01d7584c 2482 goto out;
01d7584c 2483
01d7584c
LG		 2484 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2485
2486out:
ea9d0d77 2487 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
b7898396 2488 snd_soc_dpcm_mutex_unlock(fe);
01d7584c 2489
04110728 2490 return soc_pcm_ret(fe, ret);
01d7584c
LG		 2491}
2492
618dae11
LG		 2493static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2494{
07bf84aa
LG		 2495 struct snd_pcm_substream *substream =
2496 snd_soc_dpcm_get_substream(fe, stream);
2497 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
618dae11
LG		 2498 int err;
2499
103d84a3 2500 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
618dae11
LG		 2501 stream ? "capture" : "playback", fe->dai_link->name);
2502
07bf84aa
LG		 2503 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2504 /* call bespoke trigger - FE takes care of all BE triggers */
103d84a3 2505 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
07bf84aa
LG		 2506 fe->dai_link->name);
2507
30819358 2508 err = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
07bf84aa 2509 } else {
103d84a3 2510 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
07bf84aa
LG		 2511 fe->dai_link->name);
2512
2513 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
07bf84aa 2514 }
618dae11 2515
f52366e6 2516 dpcm_be_dai_hw_free(fe, stream);
618dae11 2517
531590bb 2518 dpcm_be_dai_shutdown(fe, stream);
618dae11
LG		 2519
2520 /* run the stream event for each BE */
2521 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2522
04110728 2523 return soc_pcm_ret(fe, err);
618dae11
LG		 2524}
2525
2526static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2527{
07bf84aa
LG		 2528 struct snd_pcm_substream *substream =
2529 snd_soc_dpcm_get_substream(fe, stream);
618dae11 2530 struct snd_soc_dpcm *dpcm;
07bf84aa 2531 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
4eeed5f4 2532 int ret = 0;
618dae11 2533
103d84a3 2534 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
618dae11
LG		 2535 stream ? "capture" : "playback", fe->dai_link->name);
2536
2537 /* Only start the BE if the FE is ready */
2538 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2c138284 2539 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) {
2540 dev_err(fe->dev, "ASoC: FE %s is not ready %d\n",
2541 fe->dai_link->name, fe->dpcm[stream].state);
e91b65b3 2542 ret = -EINVAL;
2c138284 2543 goto disconnect;
2544 }
618dae11
LG		 2545
2546 /* startup must always be called for new BEs */
2547 ret = dpcm_be_dai_startup(fe, stream);
fffc0ca2 2548 if (ret < 0)
618dae11 2549 goto disconnect;
618dae11
LG		 2550
2551 /* keep going if FE state is > open */
2552 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2553 return 0;
01d7584c 2554
618dae11 2555 ret = dpcm_be_dai_hw_params(fe, stream);
fffc0ca2 2556 if (ret < 0)
618dae11 2557 goto close;
618dae11
LG		 2558
2559 /* keep going if FE state is > hw_params */
2560 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2561 return 0;
2562
618dae11 2563 ret = dpcm_be_dai_prepare(fe, stream);
fffc0ca2 2564 if (ret < 0)
618dae11 2565 goto hw_free;
618dae11
LG		 2566
2567 /* run the stream event for each BE */
2568 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2569
2570 /* keep going if FE state is > prepare */
2571 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2572 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2573 return 0;
2574
07bf84aa
LG		 2575 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2576 /* call trigger on the frontend - FE takes care of all BE triggers */
103d84a3 2577 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
07bf84aa 2578 fe->dai_link->name);
618dae11 2579
30819358 2580 ret = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
62462e01 2581 if (ret < 0)
07bf84aa 2582 goto hw_free;
07bf84aa 2583 } else {
103d84a3 2584 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
07bf84aa
LG		 2585 fe->dai_link->name);
2586
2587 ret = dpcm_be_dai_trigger(fe, stream,
2588 SNDRV_PCM_TRIGGER_START);
db3aa39c 2589 if (ret < 0)
07bf84aa 2590 goto hw_free;
618dae11
LG		 2591 }
2592
2593 return 0;
2594
2595hw_free:
2596 dpcm_be_dai_hw_free(fe, stream);
2597close:
2598 dpcm_be_dai_shutdown(fe, stream);
2599disconnect:
2c138284 2600 /* disconnect any pending BEs */
8d6258a4 2601 for_each_dpcm_be(fe, stream, dpcm) {
618dae11 2602 struct snd_soc_pcm_runtime *be = dpcm->be;
2c138284 2603
2604 /* is this op for this BE ? */
2605 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2606 continue;
2607
2608 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE ||
2609 be->dpcm[stream].state == SND_SOC_DPCM_STATE_NEW)
2610 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
618dae11
LG		 2611 }
2612
04110728 2613 return soc_pcm_ret(fe, ret);
618dae11
LG		 2614}
2615
de15d7ff 2616static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
618dae11 2617{
de15d7ff 2618 struct snd_soc_dapm_widget_list *list;
7083f877 2619 int stream;
de15d7ff 2620 int count, paths;
618dae11 2621
96bf62f0
PLB		 2622 if (!fe->dai_link->dynamic)
2623 return 0;
2624
3989ade2 2625 if (fe->dai_link->num_cpus > 1) {
6e1276a5
BL		 2626 dev_err(fe->dev,
2627 "%s doesn't support Multi CPU yet\n", __func__);
2628 return -EINVAL;
2629 }
2630
de15d7ff 2631 /* only check active links */
b3dea624 2632 if (!snd_soc_dai_active(asoc_rtd_to_cpu(fe, 0)))
de15d7ff 2633 return 0;
618dae11 2634
de15d7ff
JB		 2635 /* DAPM sync will call this to update DSP paths */
2636 dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n",
2637 new ? "new" : "old", fe->dai_link->name);
618dae11 2638
7083f877 2639 for_each_pcm_streams(stream) {
618dae11 2640
7083f877 2641 /* skip if FE doesn't have playback/capture capability */
c2233a26
KM		 2642 if (!snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream) ||
2643 !snd_soc_dai_stream_valid(asoc_rtd_to_codec(fe, 0), stream))
7083f877 2644 continue;
de15d7ff 2645
7083f877 2646 /* skip if FE isn't currently playing/capturing */
b3dea624
KM		 2647 if (!snd_soc_dai_stream_active(asoc_rtd_to_cpu(fe, 0), stream) ||
2648 !snd_soc_dai_stream_active(asoc_rtd_to_codec(fe, 0), stream))
7083f877 2649 continue;
075207d2 2650
7083f877 2651 paths = dpcm_path_get(fe, stream, &list);
d479f00b 2652 if (paths < 0)
7083f877 2653 return paths;
618dae11 2654
7083f877
KM		 2655 /* update any playback/capture paths */
2656 count = dpcm_process_paths(fe, stream, &list, new);
2657 if (count) {
580dff36 2658 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
7083f877 2659 if (new)
81c82a9e 2660 dpcm_run_update_startup(fe, stream);
7083f877 2661 else
81c82a9e 2662 dpcm_run_update_shutdown(fe, stream);
580dff36 2663 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
618dae11 2664
7083f877
KM		 2665 dpcm_clear_pending_state(fe, stream);
2666 dpcm_be_disconnect(fe, stream);
2667 }
618dae11 2668
7083f877 2669 dpcm_path_put(&list);
618dae11
LG		 2670 }
2671
618dae11
LG		 2672 return 0;
2673}
de15d7ff
JB		 2674
2675/* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2676 * any DAI links.
2677 */
f17a1478 2678int snd_soc_dpcm_runtime_update(struct snd_soc_card *card)
de15d7ff
JB		 2679{
2680 struct snd_soc_pcm_runtime *fe;
2681 int ret = 0;
2682
38e42f6d 2683 snd_soc_dpcm_mutex_lock(card);
de15d7ff 2684 /* shutdown all old paths first */
bcb1fd1f 2685 for_each_card_rtds(card, fe) {
de15d7ff
JB		 2686 ret = soc_dpcm_fe_runtime_update(fe, 0);
2687 if (ret)
2688 goto out;
2689 }
2690
2691 /* bring new paths up */
bcb1fd1f 2692 for_each_card_rtds(card, fe) {
de15d7ff
JB		 2693 ret = soc_dpcm_fe_runtime_update(fe, 1);
2694 if (ret)
2695 goto out;
2696 }
2697
2698out:
38e42f6d 2699 snd_soc_dpcm_mutex_unlock(card);
de15d7ff
JB		 2700 return ret;
2701}
f17a1478 2702EXPORT_SYMBOL_GPL(snd_soc_dpcm_runtime_update);
01d7584c 2703
265694b6 2704static void dpcm_fe_dai_cleanup(struct snd_pcm_substream *fe_substream)
01d7584c 2705{
0ceef681 2706 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream);
01d7584c 2707 struct snd_soc_dpcm *dpcm;
265694b6 2708 int stream = fe_substream->stream;
30fca26f 2709
b7898396
TI		 2710 snd_soc_dpcm_mutex_assert_held(fe);
2711
30fca26f
KM		 2712 /* mark FE's links ready to prune */
2713 for_each_dpcm_be(fe, stream, dpcm)
2714 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2715
2716 dpcm_be_disconnect(fe, stream);
265694b6
KM		 2717}
2718
2719static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
2720{
0ceef681 2721 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream);
265694b6
KM		 2722 int ret;
2723
b7898396 2724 snd_soc_dpcm_mutex_lock(fe);
265694b6
KM		 2725 ret = dpcm_fe_dai_shutdown(fe_substream);
2726
2727 dpcm_fe_dai_cleanup(fe_substream);
2728
b7898396 2729 snd_soc_dpcm_mutex_unlock(fe);
30fca26f
KM		 2730 return ret;
2731}
2732
45c0a188 2733static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
01d7584c 2734{
0ceef681 2735 struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream);
01d7584c
LG		 2736 struct snd_soc_dapm_widget_list *list;
2737 int ret;
2738 int stream = fe_substream->stream;
2739
b7898396 2740 snd_soc_dpcm_mutex_lock(fe);
01d7584c 2741
8f70e515 2742 ret = dpcm_path_get(fe, stream, &list);
d479f00b 2743 if (ret < 0)
cae06eb9 2744 goto open_end;
01d7584c
LG		 2745
2746 /* calculate valid and active FE <-> BE dpcms */
2747 dpcm_process_paths(fe, stream, &list, 1);
2748
2749 ret = dpcm_fe_dai_startup(fe_substream);
265694b6
KM		 2750 if (ret < 0)
2751 dpcm_fe_dai_cleanup(fe_substream);
01d7584c
LG		 2752
2753 dpcm_clear_pending_state(fe, stream);
2754 dpcm_path_put(&list);
cae06eb9 2755open_end:
b7898396 2756 snd_soc_dpcm_mutex_unlock(fe);
01d7584c
LG		 2757 return ret;
2758}
2759
7fc6bebd
KM		 2760static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd,
2761 int *playback, int *capture)
ddee627c 2762{
cfcb31c4 2763 struct snd_soc_dai_link *dai_link = rtd->dai_link;
19bdcc7a 2764 struct snd_soc_dai *cpu_dai;
c3e9b6d6
KM		 2765 int has_playback = 0;
2766 int has_capture = 0;
2e5894d7 2767 int i;
ddee627c 2768
cfcb31c4 2769 if (dai_link->dynamic && dai_link->num_cpus > 1) {
a1c0221f 2770 dev_err(rtd->dev, "DPCM doesn't support Multi CPU for Front-Ends yet\n");
b73287f0
PLB		 2771 return -EINVAL;
2772 }
2773
cfcb31c4 2774 if (dai_link->dynamic || dai_link->no_pcm) {
940a1f43
KM		 2775 int stream;
2776
cfcb31c4 2777 if (dai_link->dpcm_playback) {
b73287f0
PLB		 2778 stream = SNDRV_PCM_STREAM_PLAYBACK;
2779
4f872154
PLB		 2780 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
2781 if (snd_soc_dai_stream_valid(cpu_dai, stream)) {
c3e9b6d6 2782 has_playback = 1;
4f872154 2783 break;
b73287f0 2784 }
4f872154 2785 }
c3e9b6d6 2786 if (!has_playback) {
4f872154
PLB		 2787 dev_err(rtd->card->dev,
2788 "No CPU DAIs support playback for stream %s\n",
cfcb31c4 2789 dai_link->stream_name);
4f872154
PLB		 2790 return -EINVAL;
2791 }
b73287f0 2792 }
cfcb31c4 2793 if (dai_link->dpcm_capture) {
b73287f0
PLB		 2794 stream = SNDRV_PCM_STREAM_CAPTURE;
2795
4f872154
PLB		 2796 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
2797 if (snd_soc_dai_stream_valid(cpu_dai, stream)) {
c3e9b6d6 2798 has_capture = 1;
4f872154 2799 break;
b73287f0 2800 }
4f872154
PLB		 2801 }
2802
c3e9b6d6 2803 if (!has_capture) {
4f872154
PLB		 2804 dev_err(rtd->card->dev,
2805 "No CPU DAIs support capture for stream %s\n",
cfcb31c4 2806 dai_link->stream_name);
4f872154
PLB		 2807 return -EINVAL;
2808 }
9b5db059 2809 }
01d7584c 2810 } else {
940a1f43
KM		 2811 struct snd_soc_dai *codec_dai;
2812
a342031c 2813 /* Adapt stream for codec2codec links */
1c943f60
KM		 2814 int cpu_capture = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_CAPTURE);
2815 int cpu_playback = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_PLAYBACK);
a342031c 2816
a4be4187 2817 for_each_rtd_codec_dais(rtd, i, codec_dai) {
cfcb31c4 2818 if (dai_link->num_cpus == 1) {
c2233a26 2819 cpu_dai = asoc_rtd_to_cpu(rtd, 0);
cfcb31c4 2820 } else if (dai_link->num_cpus == dai_link->num_codecs) {
c2233a26 2821 cpu_dai = asoc_rtd_to_cpu(rtd, i);
ac950278
BL		 2822 } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) {
2823 int cpu_id;
2824
2825 if (!rtd->dai_link->codec_ch_maps) {
2826 dev_err(rtd->card->dev, "%s: no codec channel mapping table provided\n",
2827 __func__);
2828 return -EINVAL;
2829 }
2830
2831 cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id;
2832 cpu_dai = asoc_rtd_to_cpu(rtd, cpu_id);
19bdcc7a
SN		 2833 } else {
2834 dev_err(rtd->card->dev,
ac950278
BL		 2835 "%s codec number %d < cpu number %d is not supported\n",
2836 __func__, rtd->dai_link->num_codecs,
2837 rtd->dai_link->num_cpus);
19bdcc7a
SN		 2838 return -EINVAL;
2839 }
2840
467fece8 2841 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
a4877a6f 2842 snd_soc_dai_stream_valid(cpu_dai, cpu_playback))
c3e9b6d6 2843 has_playback = 1;
467fece8 2844 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
a4877a6f 2845 snd_soc_dai_stream_valid(cpu_dai, cpu_capture))
c3e9b6d6 2846 has_capture = 1;
2e5894d7 2847 }
01d7584c
LG		 2848 }
2849
e1f653ce 2850 if (dai_link->playback_only)
c3e9b6d6 2851 has_capture = 0;
d6bead02 2852
e1f653ce 2853 if (dai_link->capture_only)
c3e9b6d6 2854 has_playback = 0;
d6bead02 2855
c3e9b6d6 2856 if (!has_playback && !has_capture) {
092830cf 2857 dev_err(rtd->dev, "substream %s has no playback, no capture\n",
cfcb31c4 2858 dai_link->stream_name);
092830cf
KM		 2859
2860 return -EINVAL;
2861 }
2862
c3e9b6d6
KM		 2863 *playback = has_playback;
2864 *capture = has_capture;
2865
7fc6bebd
KM		 2866 return 0;
2867}
2868
2b39123b
KM		 2869static int soc_create_pcm(struct snd_pcm **pcm,
2870 struct snd_soc_pcm_runtime *rtd,
2871 int playback, int capture, int num)
7fc6bebd 2872{
7fc6bebd 2873 char new_name[64];
2b39123b 2874 int ret;
7fc6bebd 2875
01d7584c 2876 /* create the PCM */
7ddc7f91 2877 if (rtd->dai_link->c2c_params) {
a342031c
JB		 2878 snprintf(new_name, sizeof(new_name), "codec2codec(%s)",
2879 rtd->dai_link->stream_name);
2880
2881 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2b39123b 2882 playback, capture, pcm);
a342031c 2883 } else if (rtd->dai_link->no_pcm) {
01d7584c
LG		 2884 snprintf(new_name, sizeof(new_name), "(%s)",
2885 rtd->dai_link->stream_name);
2886
2887 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
2b39123b 2888 playback, capture, pcm);
01d7584c
LG		 2889 } else {
2890 if (rtd->dai_link->dynamic)
2891 snprintf(new_name, sizeof(new_name), "%s (*)",
2892 rtd->dai_link->stream_name);
2893 else
2894 snprintf(new_name, sizeof(new_name), "%s %s-%d",
2e5894d7 2895 rtd->dai_link->stream_name,
6fb8944c 2896 soc_codec_dai_name(rtd), num);
01d7584c
LG		 2897
2898 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
2b39123b 2899 capture, pcm);
01d7584c 2900 }
ddee627c 2901 if (ret < 0) {
799827a4
PLB		 2902 dev_err(rtd->card->dev, "ASoC: can't create pcm %s for dailink %s: %d\n",
2903 new_name, rtd->dai_link->name, ret);
ddee627c
LG		 2904 return ret;
2905 }
103d84a3 2906 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
ddee627c 2907
2b39123b
KM		 2908 return 0;
2909}
2910
2911/* create a new pcm */
2912int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2913{
2914 struct snd_soc_component *component;
2915 struct snd_pcm *pcm;
2916 int ret = 0, playback = 0, capture = 0;
2917 int i;
2918
2919 ret = soc_get_playback_capture(rtd, &playback, &capture);
2920 if (ret < 0)
2921 return ret;
2922
2923 ret = soc_create_pcm(&pcm, rtd, playback, capture, num);
2924 if (ret < 0)
2925 return ret;
2926
ddee627c 2927 /* DAPM dai link stream work */
10d5d8cb
KM		 2928 /*
2929 * Currently nothing to do for c2c links
2930 * Since c2c links are internal nodes in the DAPM graph and
2931 * don't interface with the outside world or application layer
2932 * we don't have to do any special handling on close.
2933 */
7ddc7f91 2934 if (!rtd->dai_link->c2c_params)
83f94a2e 2935 rtd->close_delayed_work_func = snd_soc_close_delayed_work;
ddee627c
LG		 2936
2937 rtd->pcm = pcm;
e04e7b8c 2938 pcm->nonatomic = rtd->dai_link->nonatomic;
ddee627c 2939 pcm->private_data = rtd;
4d45d944 2940 pcm->no_device_suspend = true;
01d7584c 2941
7ddc7f91 2942 if (rtd->dai_link->no_pcm || rtd->dai_link->c2c_params) {
01d7584c
LG		 2943 if (playback)
2944 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
2945 if (capture)
2946 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2947 goto out;
2948 }
2949
2950 /* ASoC PCM operations */
2951 if (rtd->dai_link->dynamic) {
2952 rtd->ops.open = dpcm_fe_dai_open;
2953 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
2954 rtd->ops.prepare = dpcm_fe_dai_prepare;
2955 rtd->ops.trigger = dpcm_fe_dai_trigger;
2956 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
2957 rtd->ops.close = dpcm_fe_dai_close;
2958 rtd->ops.pointer = soc_pcm_pointer;
2959 } else {
2960 rtd->ops.open = soc_pcm_open;
2961 rtd->ops.hw_params = soc_pcm_hw_params;
2962 rtd->ops.prepare = soc_pcm_prepare;
2963 rtd->ops.trigger = soc_pcm_trigger;
2964 rtd->ops.hw_free = soc_pcm_hw_free;
2965 rtd->ops.close = soc_pcm_close;
2966 rtd->ops.pointer = soc_pcm_pointer;
2967 }
2968
613fb500 2969 for_each_rtd_components(rtd, i, component) {
2b544dd7 2970 const struct snd_soc_component_driver *drv = component->driver;
b8135864 2971
3b1c952c
TI		 2972 if (drv->ioctl)
2973 rtd->ops.ioctl = snd_soc_pcm_component_ioctl;
1e5ddb6b
TI		 2974 if (drv->sync_stop)
2975 rtd->ops.sync_stop = snd_soc_pcm_component_sync_stop;
e9067bb5 2976 if (drv->copy_user)
82d81f5c 2977 rtd->ops.copy_user = snd_soc_pcm_component_copy_user;
e9067bb5 2978 if (drv->page)
9c712e4f 2979 rtd->ops.page = snd_soc_pcm_component_page;
e9067bb5 2980 if (drv->mmap)
205875e1 2981 rtd->ops.mmap = snd_soc_pcm_component_mmap;
8bdfc045
SW		 2982 if (drv->ack)
2983 rtd->ops.ack = snd_soc_pcm_component_ack;
ddee627c
LG		 2984 }
2985
2986 if (playback)
01d7584c 2987 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
ddee627c
LG		 2988
2989 if (capture)
01d7584c 2990 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
ddee627c 2991
b2b2afbb 2992 ret = snd_soc_pcm_component_new(rtd);
60adbd8f 2993 if (ret < 0)
7484291e 2994 return ret;
01d7584c 2995out:
1d5cd525 2996 dev_dbg(rtd->card->dev, "%s <-> %s mapping ok\n",
6fb8944c 2997 soc_codec_dai_name(rtd), soc_cpu_dai_name(rtd));
ddee627c
LG		 2998 return ret;
2999}
01d7584c
LG		 3000
3001/* is the current PCM operation for this FE ? */
3002int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
3003{
3004 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
3005 return 1;
3006 return 0;
3007}
3008EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
3009
3010/* is the current PCM operation for this BE ? */
3011int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
3012 struct snd_soc_pcm_runtime *be, int stream)
3013{
3014 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
3015 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
3016 be->dpcm[stream].runtime_update))
3017 return 1;
3018 return 0;
3019}
3020EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
3021
3022/* get the substream for this BE */
3023struct snd_pcm_substream *
3024 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
3025{
3026 return be->pcm->streams[stream].substream;
3027}
3028EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
3029
085d22be
KM		 3030static int snd_soc_dpcm_check_state(struct snd_soc_pcm_runtime *fe,
3031 struct snd_soc_pcm_runtime *be,
3032 int stream,
3033 const enum snd_soc_dpcm_state *states,
3034 int num_states)
01d7584c
LG		 3035{
3036 struct snd_soc_dpcm *dpcm;
3037 int state;
a9764869 3038 int ret = 1;
085d22be 3039 int i;
01d7584c 3040
d2e24d64 3041 for_each_dpcm_fe(be, stream, dpcm) {
01d7584c
LG		 3042
3043 if (dpcm->fe == fe)
3044 continue;
3045
3046 state = dpcm->fe->dpcm[stream].state;
085d22be
KM		 3047 for (i = 0; i < num_states; i++) {
3048 if (state == states[i]) {
3049 ret = 0;
3050 break;
3051 }
a9764869 3052 }
01d7584c
LG		 3053 }
3054
085d22be 3055 /* it's safe to do this BE DAI */
a9764869 3056 return ret;
01d7584c 3057}
085d22be
KM		 3058
3059/*
3060 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
3061 * are not running, paused or suspended for the specified stream direction.
3062 */
3063int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
3064 struct snd_soc_pcm_runtime *be, int stream)
3065{
3066 const enum snd_soc_dpcm_state state[] = {
3067 SND_SOC_DPCM_STATE_START,
3068 SND_SOC_DPCM_STATE_PAUSED,
3069 SND_SOC_DPCM_STATE_SUSPEND,
3070 };
3071
3072 return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));
3073}
01d7584c
LG		 3074EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
3075
3076/*
3077 * We can only change hw params a BE DAI if any of it's FE are not prepared,
3078 * running, paused or suspended for the specified stream direction.
3079 */
3080int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
3081 struct snd_soc_pcm_runtime *be, int stream)
3082{
085d22be
KM		 3083 const enum snd_soc_dpcm_state state[] = {
3084 SND_SOC_DPCM_STATE_START,
3085 SND_SOC_DPCM_STATE_PAUSED,
3086 SND_SOC_DPCM_STATE_SUSPEND,
3087 SND_SOC_DPCM_STATE_PREPARE,
3088 };
01d7584c 3089
085d22be 3090 return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));
01d7584c
LG		 3091}
3092EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
e123036b
RS		 3093
3094/*
3095 * We can only prepare a BE DAI if any of it's FE are not prepared,
3096 * running or paused for the specified stream direction.
3097 */
3098int snd_soc_dpcm_can_be_prepared(struct snd_soc_pcm_runtime *fe,
3099 struct snd_soc_pcm_runtime *be, int stream)
3100{
3101 const enum snd_soc_dpcm_state state[] = {
3102 SND_SOC_DPCM_STATE_START,
3103 SND_SOC_DPCM_STATE_PAUSED,
3104 SND_SOC_DPCM_STATE_PREPARE,
3105 };
3106
3107 return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state));
3108}
3109EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_prepared);
Linux 6.x block layer and io_uring tree(s)