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Commit | Line | Data |
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ddee627c LG |
1 | /* |
2 | * soc-pcm.c -- ALSA SoC PCM | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Copyright 2005 Openedhand Ltd. | |
6 | * Copyright (C) 2010 Slimlogic Ltd. | |
7 | * Copyright (C) 2010 Texas Instruments Inc. | |
8 | * | |
9 | * Authors: Liam Girdwood <lrg@ti.com> | |
10 | * Mark Brown <broonie@opensource.wolfsonmicro.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/delay.h> | |
988e8cc4 | 22 | #include <linux/pinctrl/consumer.h> |
d6652ef8 | 23 | #include <linux/pm_runtime.h> |
ddee627c LG |
24 | #include <linux/slab.h> |
25 | #include <linux/workqueue.h> | |
01d7584c | 26 | #include <linux/export.h> |
f86dcef8 | 27 | #include <linux/debugfs.h> |
ddee627c LG |
28 | #include <sound/core.h> |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/soc.h> | |
01d7584c | 32 | #include <sound/soc-dpcm.h> |
ddee627c LG |
33 | #include <sound/initval.h> |
34 | ||
01d7584c LG |
35 | #define DPCM_MAX_BE_USERS 8 |
36 | ||
90996f43 LPC |
37 | /** |
38 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
39 | * @substream: the pcm substream | |
40 | * @hw: the hardware parameters | |
41 | * | |
42 | * Sets the substream runtime hardware parameters. | |
43 | */ | |
44 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
45 | const struct snd_pcm_hardware *hw) | |
46 | { | |
47 | struct snd_pcm_runtime *runtime = substream->runtime; | |
48 | runtime->hw.info = hw->info; | |
49 | runtime->hw.formats = hw->formats; | |
50 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
51 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
52 | runtime->hw.periods_min = hw->periods_min; | |
53 | runtime->hw.periods_max = hw->periods_max; | |
54 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
55 | runtime->hw.fifo_size = hw->fifo_size; | |
56 | return 0; | |
57 | } | |
58 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
59 | ||
01d7584c | 60 | /* DPCM stream event, send event to FE and all active BEs. */ |
23607025 | 61 | int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, |
01d7584c LG |
62 | int event) |
63 | { | |
64 | struct snd_soc_dpcm *dpcm; | |
65 | ||
66 | list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) { | |
67 | ||
68 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
69 | ||
103d84a3 | 70 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
71 | be->dai_link->name, event, dir); |
72 | ||
73 | snd_soc_dapm_stream_event(be, dir, event); | |
74 | } | |
75 | ||
76 | snd_soc_dapm_stream_event(fe, dir, event); | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
17841020 DA |
81 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
82 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
83 | { |
84 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
85 | int ret; |
86 | ||
3635bf09 NC |
87 | if (soc_dai->rate && (soc_dai->driver->symmetric_rates || |
88 | rtd->dai_link->symmetric_rates)) { | |
89 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", | |
90 | soc_dai->rate); | |
91 | ||
92 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
93 | SNDRV_PCM_HW_PARAM_RATE, | |
94 | soc_dai->rate, soc_dai->rate); | |
95 | if (ret < 0) { | |
96 | dev_err(soc_dai->dev, | |
97 | "ASoC: Unable to apply rate constraint: %d\n", | |
98 | ret); | |
99 | return ret; | |
100 | } | |
101 | } | |
ddee627c | 102 | |
3635bf09 NC |
103 | if (soc_dai->channels && (soc_dai->driver->symmetric_channels || |
104 | rtd->dai_link->symmetric_channels)) { | |
105 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n", | |
106 | soc_dai->channels); | |
ddee627c | 107 | |
3635bf09 NC |
108 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, |
109 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
110 | soc_dai->channels, | |
111 | soc_dai->channels); | |
112 | if (ret < 0) { | |
113 | dev_err(soc_dai->dev, | |
114 | "ASoC: Unable to apply channel symmetry constraint: %d\n", | |
115 | ret); | |
116 | return ret; | |
117 | } | |
ddee627c LG |
118 | } |
119 | ||
3635bf09 NC |
120 | if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits || |
121 | rtd->dai_link->symmetric_samplebits)) { | |
122 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n", | |
123 | soc_dai->sample_bits); | |
ddee627c | 124 | |
3635bf09 NC |
125 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, |
126 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
127 | soc_dai->sample_bits, | |
128 | soc_dai->sample_bits); | |
129 | if (ret < 0) { | |
130 | dev_err(soc_dai->dev, | |
131 | "ASoC: Unable to apply sample bits symmetry constraint: %d\n", | |
132 | ret); | |
133 | return ret; | |
134 | } | |
ddee627c LG |
135 | } |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
3635bf09 NC |
140 | static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, |
141 | struct snd_pcm_hw_params *params) | |
142 | { | |
143 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
144 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
145 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
146 | unsigned int rate, channels, sample_bits, symmetry; | |
147 | ||
148 | rate = params_rate(params); | |
149 | channels = params_channels(params); | |
150 | sample_bits = snd_pcm_format_physical_width(params_format(params)); | |
151 | ||
152 | /* reject unmatched parameters when applying symmetry */ | |
153 | symmetry = cpu_dai->driver->symmetric_rates || | |
154 | codec_dai->driver->symmetric_rates || | |
155 | rtd->dai_link->symmetric_rates; | |
156 | if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) { | |
157 | dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", | |
158 | cpu_dai->rate, rate); | |
159 | return -EINVAL; | |
ddee627c LG |
160 | } |
161 | ||
3635bf09 NC |
162 | symmetry = cpu_dai->driver->symmetric_channels || |
163 | codec_dai->driver->symmetric_channels || | |
164 | rtd->dai_link->symmetric_channels; | |
165 | if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) { | |
166 | dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", | |
167 | cpu_dai->channels, channels); | |
168 | return -EINVAL; | |
169 | } | |
ddee627c | 170 | |
3635bf09 NC |
171 | symmetry = cpu_dai->driver->symmetric_samplebits || |
172 | codec_dai->driver->symmetric_samplebits || | |
173 | rtd->dai_link->symmetric_samplebits; | |
174 | if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) { | |
175 | dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", | |
176 | cpu_dai->sample_bits, sample_bits); | |
177 | return -EINVAL; | |
ddee627c LG |
178 | } |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
62e5f676 LPC |
183 | static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) |
184 | { | |
185 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
186 | struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver; | |
187 | struct snd_soc_dai_driver *codec_driver = rtd->codec_dai->driver; | |
188 | struct snd_soc_dai_link *link = rtd->dai_link; | |
189 | ||
190 | return cpu_driver->symmetric_rates || codec_driver->symmetric_rates || | |
191 | link->symmetric_rates || cpu_driver->symmetric_channels || | |
192 | codec_driver->symmetric_channels || link->symmetric_channels || | |
193 | cpu_driver->symmetric_samplebits || | |
194 | codec_driver->symmetric_samplebits || | |
195 | link->symmetric_samplebits; | |
196 | } | |
197 | ||
58ba9b25 MB |
198 | /* |
199 | * List of sample sizes that might go over the bus for parameter | |
200 | * application. There ought to be a wildcard sample size for things | |
201 | * like the DAC/ADC resolution to use but there isn't right now. | |
202 | */ | |
203 | static int sample_sizes[] = { | |
88e33954 | 204 | 24, 32, |
58ba9b25 MB |
205 | }; |
206 | ||
207 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, | |
208 | struct snd_soc_dai *dai) | |
209 | { | |
210 | int ret, i, bits; | |
211 | ||
212 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
213 | bits = dai->driver->playback.sig_bits; | |
214 | else | |
215 | bits = dai->driver->capture.sig_bits; | |
216 | ||
217 | if (!bits) | |
218 | return; | |
219 | ||
220 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
221 | if (bits >= sample_sizes[i]) |
222 | continue; | |
223 | ||
224 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
225 | sample_sizes[i], bits); | |
58ba9b25 MB |
226 | if (ret != 0) |
227 | dev_warn(dai->dev, | |
103d84a3 | 228 | "ASoC: Failed to set MSB %d/%d: %d\n", |
58ba9b25 MB |
229 | bits, sample_sizes[i], ret); |
230 | } | |
231 | } | |
232 | ||
78e45c99 | 233 | static void soc_pcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
bd477c31 LPC |
234 | struct snd_soc_pcm_stream *codec_stream, |
235 | struct snd_soc_pcm_stream *cpu_stream) | |
236 | { | |
78e45c99 LPC |
237 | struct snd_pcm_hardware *hw = &runtime->hw; |
238 | ||
bd477c31 LPC |
239 | hw->channels_min = max(codec_stream->channels_min, |
240 | cpu_stream->channels_min); | |
241 | hw->channels_max = min(codec_stream->channels_max, | |
242 | cpu_stream->channels_max); | |
16d7ea91 LPC |
243 | if (hw->formats) |
244 | hw->formats &= codec_stream->formats & cpu_stream->formats; | |
245 | else | |
246 | hw->formats = codec_stream->formats & cpu_stream->formats; | |
55dcdb50 LPC |
247 | hw->rates = snd_pcm_rate_mask_intersect(codec_stream->rates, |
248 | cpu_stream->rates); | |
78e45c99 | 249 | |
817873f4 LPC |
250 | hw->rate_min = 0; |
251 | hw->rate_max = UINT_MAX; | |
78e45c99 LPC |
252 | |
253 | snd_pcm_limit_hw_rates(runtime); | |
254 | ||
255 | hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); | |
256 | hw->rate_min = max(hw->rate_min, codec_stream->rate_min); | |
257 | hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); | |
258 | hw->rate_max = min_not_zero(hw->rate_max, codec_stream->rate_max); | |
bd477c31 LPC |
259 | } |
260 | ||
ddee627c LG |
261 | /* |
262 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
263 | * then initialized and any private data can be allocated. This also calls | |
264 | * startup for the cpu DAI, platform, machine and codec DAI. | |
265 | */ | |
266 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
267 | { | |
268 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
269 | struct snd_pcm_runtime *runtime = substream->runtime; | |
270 | struct snd_soc_platform *platform = rtd->platform; | |
271 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
272 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
273 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
274 | struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; | |
275 | int ret = 0; | |
276 | ||
988e8cc4 NC |
277 | pinctrl_pm_select_default_state(cpu_dai->dev); |
278 | pinctrl_pm_select_default_state(codec_dai->dev); | |
d6652ef8 MB |
279 | pm_runtime_get_sync(cpu_dai->dev); |
280 | pm_runtime_get_sync(codec_dai->dev); | |
281 | pm_runtime_get_sync(platform->dev); | |
282 | ||
b8c0dab9 | 283 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
284 | |
285 | /* startup the audio subsystem */ | |
c5914b0a | 286 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) { |
ddee627c LG |
287 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
288 | if (ret < 0) { | |
103d84a3 LG |
289 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
290 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
291 | goto out; |
292 | } | |
293 | } | |
294 | ||
295 | if (platform->driver->ops && platform->driver->ops->open) { | |
296 | ret = platform->driver->ops->open(substream); | |
297 | if (ret < 0) { | |
103d84a3 LG |
298 | dev_err(platform->dev, "ASoC: can't open platform" |
299 | " %s: %d\n", platform->name, ret); | |
ddee627c LG |
300 | goto platform_err; |
301 | } | |
302 | } | |
303 | ||
c5914b0a | 304 | if (codec_dai->driver->ops && codec_dai->driver->ops->startup) { |
ddee627c LG |
305 | ret = codec_dai->driver->ops->startup(substream, codec_dai); |
306 | if (ret < 0) { | |
103d84a3 LG |
307 | dev_err(codec_dai->dev, "ASoC: can't open codec" |
308 | " %s: %d\n", codec_dai->name, ret); | |
ddee627c LG |
309 | goto codec_dai_err; |
310 | } | |
311 | } | |
312 | ||
313 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
314 | ret = rtd->dai_link->ops->startup(substream); | |
315 | if (ret < 0) { | |
103d84a3 | 316 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 317 | rtd->dai_link->name, ret); |
ddee627c LG |
318 | goto machine_err; |
319 | } | |
320 | } | |
321 | ||
01d7584c LG |
322 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
323 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
324 | goto dynamic; | |
325 | ||
ddee627c LG |
326 | /* Check that the codec and cpu DAIs are compatible */ |
327 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
78e45c99 | 328 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->playback, |
bd477c31 | 329 | &cpu_dai_drv->playback); |
ddee627c | 330 | } else { |
78e45c99 | 331 | soc_pcm_init_runtime_hw(runtime, &codec_dai_drv->capture, |
bd477c31 | 332 | &cpu_dai_drv->capture); |
ddee627c LG |
333 | } |
334 | ||
62e5f676 LPC |
335 | if (soc_pcm_has_symmetry(substream)) |
336 | runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; | |
337 | ||
ddee627c | 338 | ret = -EINVAL; |
ddee627c | 339 | if (!runtime->hw.rates) { |
103d84a3 | 340 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
ddee627c LG |
341 | codec_dai->name, cpu_dai->name); |
342 | goto config_err; | |
343 | } | |
344 | if (!runtime->hw.formats) { | |
103d84a3 | 345 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
ddee627c LG |
346 | codec_dai->name, cpu_dai->name); |
347 | goto config_err; | |
348 | } | |
349 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
350 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 351 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
ddee627c LG |
352 | codec_dai->name, cpu_dai->name); |
353 | goto config_err; | |
354 | } | |
355 | ||
58ba9b25 MB |
356 | soc_pcm_apply_msb(substream, codec_dai); |
357 | soc_pcm_apply_msb(substream, cpu_dai); | |
358 | ||
ddee627c | 359 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
360 | if (cpu_dai->active) { |
361 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
362 | if (ret != 0) | |
363 | goto config_err; | |
364 | } | |
365 | ||
366 | if (codec_dai->active) { | |
367 | ret = soc_pcm_apply_symmetry(substream, codec_dai); | |
ddee627c LG |
368 | if (ret != 0) |
369 | goto config_err; | |
370 | } | |
371 | ||
103d84a3 | 372 | pr_debug("ASoC: %s <-> %s info:\n", |
ddee627c | 373 | codec_dai->name, cpu_dai->name); |
103d84a3 LG |
374 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
375 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 376 | runtime->hw.channels_max); |
103d84a3 | 377 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
378 | runtime->hw.rate_max); |
379 | ||
01d7584c | 380 | dynamic: |
ddee627c LG |
381 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
382 | cpu_dai->playback_active++; | |
383 | codec_dai->playback_active++; | |
384 | } else { | |
385 | cpu_dai->capture_active++; | |
386 | codec_dai->capture_active++; | |
387 | } | |
388 | cpu_dai->active++; | |
389 | codec_dai->active++; | |
390 | rtd->codec->active++; | |
b8c0dab9 | 391 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
392 | return 0; |
393 | ||
394 | config_err: | |
395 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
396 | rtd->dai_link->ops->shutdown(substream); | |
397 | ||
398 | machine_err: | |
399 | if (codec_dai->driver->ops->shutdown) | |
400 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
401 | ||
402 | codec_dai_err: | |
403 | if (platform->driver->ops && platform->driver->ops->close) | |
404 | platform->driver->ops->close(substream); | |
405 | ||
406 | platform_err: | |
407 | if (cpu_dai->driver->ops->shutdown) | |
408 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
409 | out: | |
b8c0dab9 | 410 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
411 | |
412 | pm_runtime_put(platform->dev); | |
413 | pm_runtime_put(codec_dai->dev); | |
414 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
415 | if (!codec_dai->active) |
416 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
417 | if (!cpu_dai->active) | |
418 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 419 | |
ddee627c LG |
420 | return ret; |
421 | } | |
422 | ||
423 | /* | |
424 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
425 | * This is to ensure there are no pops or clicks in between any music tracks | |
426 | * due to DAPM power cycling. | |
427 | */ | |
428 | static void close_delayed_work(struct work_struct *work) | |
429 | { | |
430 | struct snd_soc_pcm_runtime *rtd = | |
431 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
432 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
433 | ||
b8c0dab9 | 434 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 435 | |
103d84a3 | 436 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
437 | codec_dai->driver->playback.stream_name, |
438 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 439 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
440 | |
441 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
442 | if (rtd->pop_wait == 1) { |
443 | rtd->pop_wait = 0; | |
7bd3a6f3 | 444 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 445 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
446 | } |
447 | ||
b8c0dab9 | 448 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
449 | } |
450 | ||
451 | /* | |
452 | * Called by ALSA when a PCM substream is closed. Private data can be | |
453 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
454 | * shutdown. | |
455 | */ | |
91d5e6b4 | 456 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
457 | { |
458 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
459 | struct snd_soc_platform *platform = rtd->platform; | |
460 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
461 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
462 | struct snd_soc_codec *codec = rtd->codec; | |
463 | ||
b8c0dab9 | 464 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
465 | |
466 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
467 | cpu_dai->playback_active--; | |
468 | codec_dai->playback_active--; | |
469 | } else { | |
470 | cpu_dai->capture_active--; | |
471 | codec_dai->capture_active--; | |
472 | } | |
473 | ||
474 | cpu_dai->active--; | |
475 | codec_dai->active--; | |
476 | codec->active--; | |
477 | ||
17841020 DA |
478 | /* clear the corresponding DAIs rate when inactive */ |
479 | if (!cpu_dai->active) | |
480 | cpu_dai->rate = 0; | |
481 | ||
482 | if (!codec_dai->active) | |
483 | codec_dai->rate = 0; | |
25b76791 | 484 | |
ddee627c LG |
485 | if (cpu_dai->driver->ops->shutdown) |
486 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
487 | ||
488 | if (codec_dai->driver->ops->shutdown) | |
489 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
490 | ||
491 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
492 | rtd->dai_link->ops->shutdown(substream); | |
493 | ||
494 | if (platform->driver->ops && platform->driver->ops->close) | |
495 | platform->driver->ops->close(substream); | |
496 | cpu_dai->runtime = NULL; | |
497 | ||
498 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
b5d1d036 | 499 | if (!rtd->pmdown_time || codec->ignore_pmdown_time || |
5b6247ab | 500 | rtd->dai_link->ignore_pmdown_time) { |
1d69c5c5 PU |
501 | /* powered down playback stream now */ |
502 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 503 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 504 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
505 | } else { |
506 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 507 | rtd->pop_wait = 1; |
d4e1a73a MB |
508 | queue_delayed_work(system_power_efficient_wq, |
509 | &rtd->delayed_work, | |
510 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 511 | } |
ddee627c LG |
512 | } else { |
513 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 514 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 515 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
516 | } |
517 | ||
b8c0dab9 | 518 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
519 | |
520 | pm_runtime_put(platform->dev); | |
521 | pm_runtime_put(codec_dai->dev); | |
522 | pm_runtime_put(cpu_dai->dev); | |
988e8cc4 NC |
523 | if (!codec_dai->active) |
524 | pinctrl_pm_select_sleep_state(codec_dai->dev); | |
525 | if (!cpu_dai->active) | |
526 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 527 | |
ddee627c LG |
528 | return 0; |
529 | } | |
530 | ||
531 | /* | |
532 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
533 | * rate, etc. This function is non atomic and can be called multiple times, | |
534 | * it can refer to the runtime info. | |
535 | */ | |
536 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
537 | { | |
538 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
539 | struct snd_soc_platform *platform = rtd->platform; | |
540 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
541 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
542 | int ret = 0; | |
543 | ||
b8c0dab9 | 544 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
545 | |
546 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
547 | ret = rtd->dai_link->ops->prepare(substream); | |
548 | if (ret < 0) { | |
103d84a3 LG |
549 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
550 | " %d\n", ret); | |
ddee627c LG |
551 | goto out; |
552 | } | |
553 | } | |
554 | ||
555 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
556 | ret = platform->driver->ops->prepare(substream); | |
557 | if (ret < 0) { | |
103d84a3 LG |
558 | dev_err(platform->dev, "ASoC: platform prepare error:" |
559 | " %d\n", ret); | |
ddee627c LG |
560 | goto out; |
561 | } | |
562 | } | |
563 | ||
c5914b0a | 564 | if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) { |
ddee627c LG |
565 | ret = codec_dai->driver->ops->prepare(substream, codec_dai); |
566 | if (ret < 0) { | |
103d84a3 | 567 | dev_err(codec_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 568 | ret); |
ddee627c LG |
569 | goto out; |
570 | } | |
571 | } | |
572 | ||
c5914b0a | 573 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) { |
ddee627c LG |
574 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
575 | if (ret < 0) { | |
103d84a3 | 576 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 577 | ret); |
ddee627c LG |
578 | goto out; |
579 | } | |
580 | } | |
581 | ||
582 | /* cancel any delayed stream shutdown that is pending */ | |
583 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
584 | rtd->pop_wait) { |
585 | rtd->pop_wait = 0; | |
ddee627c LG |
586 | cancel_delayed_work(&rtd->delayed_work); |
587 | } | |
588 | ||
d9b0951b LG |
589 | snd_soc_dapm_stream_event(rtd, substream->stream, |
590 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 591 | |
da18396f | 592 | snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); |
ddee627c LG |
593 | |
594 | out: | |
b8c0dab9 | 595 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
596 | return ret; |
597 | } | |
598 | ||
599 | /* | |
600 | * Called by ALSA when the hardware params are set by application. This | |
601 | * function can also be called multiple times and can allocate buffers | |
602 | * (using snd_pcm_lib_* ). It's non-atomic. | |
603 | */ | |
604 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
605 | struct snd_pcm_hw_params *params) | |
606 | { | |
607 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
608 | struct snd_soc_platform *platform = rtd->platform; | |
609 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
610 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
611 | int ret = 0; | |
612 | ||
b8c0dab9 | 613 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 614 | |
3635bf09 NC |
615 | ret = soc_pcm_params_symmetry(substream, params); |
616 | if (ret) | |
617 | goto out; | |
618 | ||
ddee627c LG |
619 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { |
620 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
621 | if (ret < 0) { | |
103d84a3 LG |
622 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
623 | " failed: %d\n", ret); | |
ddee627c LG |
624 | goto out; |
625 | } | |
626 | } | |
627 | ||
c5914b0a | 628 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_params) { |
ddee627c LG |
629 | ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); |
630 | if (ret < 0) { | |
103d84a3 LG |
631 | dev_err(codec_dai->dev, "ASoC: can't set %s hw params:" |
632 | " %d\n", codec_dai->name, ret); | |
ddee627c LG |
633 | goto codec_err; |
634 | } | |
635 | } | |
636 | ||
c5914b0a | 637 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_params) { |
ddee627c LG |
638 | ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); |
639 | if (ret < 0) { | |
103d84a3 | 640 | dev_err(cpu_dai->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 641 | cpu_dai->name, ret); |
ddee627c LG |
642 | goto interface_err; |
643 | } | |
644 | } | |
645 | ||
646 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
647 | ret = platform->driver->ops->hw_params(substream, params); | |
648 | if (ret < 0) { | |
103d84a3 | 649 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
25bfe662 | 650 | platform->name, ret); |
ddee627c LG |
651 | goto platform_err; |
652 | } | |
653 | } | |
654 | ||
3635bf09 | 655 | /* store the parameters for each DAIs */ |
17841020 | 656 | cpu_dai->rate = params_rate(params); |
3635bf09 NC |
657 | cpu_dai->channels = params_channels(params); |
658 | cpu_dai->sample_bits = | |
659 | snd_pcm_format_physical_width(params_format(params)); | |
660 | ||
17841020 | 661 | codec_dai->rate = params_rate(params); |
3635bf09 NC |
662 | codec_dai->channels = params_channels(params); |
663 | codec_dai->sample_bits = | |
664 | snd_pcm_format_physical_width(params_format(params)); | |
ddee627c LG |
665 | |
666 | out: | |
b8c0dab9 | 667 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
668 | return ret; |
669 | ||
670 | platform_err: | |
c5914b0a | 671 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
672 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
673 | ||
674 | interface_err: | |
c5914b0a | 675 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
676 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
677 | ||
678 | codec_err: | |
679 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
680 | rtd->dai_link->ops->hw_free(substream); | |
681 | ||
b8c0dab9 | 682 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
683 | return ret; |
684 | } | |
685 | ||
686 | /* | |
687 | * Frees resources allocated by hw_params, can be called multiple times | |
688 | */ | |
689 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
690 | { | |
691 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
692 | struct snd_soc_platform *platform = rtd->platform; | |
693 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
694 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
7f62b6ee | 695 | bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
ddee627c | 696 | |
b8c0dab9 | 697 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 698 | |
d3383420 NC |
699 | /* clear the corresponding DAIs parameters when going to be inactive */ |
700 | if (cpu_dai->active == 1) { | |
701 | cpu_dai->rate = 0; | |
702 | cpu_dai->channels = 0; | |
703 | cpu_dai->sample_bits = 0; | |
704 | } | |
705 | ||
706 | if (codec_dai->active == 1) { | |
707 | codec_dai->rate = 0; | |
708 | codec_dai->channels = 0; | |
709 | codec_dai->sample_bits = 0; | |
710 | } | |
711 | ||
ddee627c | 712 | /* apply codec digital mute */ |
7f62b6ee NC |
713 | if ((playback && codec_dai->playback_active == 1) || |
714 | (!playback && codec_dai->capture_active == 1)) | |
da18396f | 715 | snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); |
ddee627c LG |
716 | |
717 | /* free any machine hw params */ | |
718 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
719 | rtd->dai_link->ops->hw_free(substream); | |
720 | ||
721 | /* free any DMA resources */ | |
722 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
723 | platform->driver->ops->hw_free(substream); | |
724 | ||
725 | /* now free hw params for the DAIs */ | |
c5914b0a | 726 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) |
ddee627c LG |
727 | codec_dai->driver->ops->hw_free(substream, codec_dai); |
728 | ||
c5914b0a | 729 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
730 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
731 | ||
b8c0dab9 | 732 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
733 | return 0; |
734 | } | |
735 | ||
736 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
737 | { | |
738 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
739 | struct snd_soc_platform *platform = rtd->platform; | |
740 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
741 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
742 | int ret; | |
743 | ||
c5914b0a | 744 | if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) { |
ddee627c LG |
745 | ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); |
746 | if (ret < 0) | |
747 | return ret; | |
748 | } | |
749 | ||
750 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
751 | ret = platform->driver->ops->trigger(substream, cmd); | |
752 | if (ret < 0) | |
753 | return ret; | |
754 | } | |
755 | ||
c5914b0a | 756 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) { |
ddee627c LG |
757 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
758 | if (ret < 0) | |
759 | return ret; | |
760 | } | |
761 | return 0; | |
762 | } | |
763 | ||
45c0a188 MB |
764 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
765 | int cmd) | |
07bf84aa LG |
766 | { |
767 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
768 | struct snd_soc_platform *platform = rtd->platform; | |
769 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
770 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
771 | int ret; | |
772 | ||
c5914b0a MB |
773 | if (codec_dai->driver->ops && |
774 | codec_dai->driver->ops->bespoke_trigger) { | |
07bf84aa LG |
775 | ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); |
776 | if (ret < 0) | |
777 | return ret; | |
778 | } | |
779 | ||
dcf0fa27 | 780 | if (platform->driver->bespoke_trigger) { |
07bf84aa LG |
781 | ret = platform->driver->bespoke_trigger(substream, cmd); |
782 | if (ret < 0) | |
783 | return ret; | |
784 | } | |
785 | ||
c5914b0a | 786 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) { |
07bf84aa LG |
787 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); |
788 | if (ret < 0) | |
789 | return ret; | |
790 | } | |
791 | return 0; | |
792 | } | |
ddee627c LG |
793 | /* |
794 | * soc level wrapper for pointer callback | |
795 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
796 | * the runtime->delay will be updated accordingly. | |
797 | */ | |
798 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
799 | { | |
800 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
801 | struct snd_soc_platform *platform = rtd->platform; | |
802 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
803 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
804 | struct snd_pcm_runtime *runtime = substream->runtime; | |
805 | snd_pcm_uframes_t offset = 0; | |
806 | snd_pcm_sframes_t delay = 0; | |
807 | ||
808 | if (platform->driver->ops && platform->driver->ops->pointer) | |
809 | offset = platform->driver->ops->pointer(substream); | |
810 | ||
c5914b0a | 811 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay) |
ddee627c LG |
812 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
813 | ||
c5914b0a | 814 | if (codec_dai->driver->ops && codec_dai->driver->ops->delay) |
ddee627c LG |
815 | delay += codec_dai->driver->ops->delay(substream, codec_dai); |
816 | ||
817 | if (platform->driver->delay) | |
818 | delay += platform->driver->delay(substream, codec_dai); | |
819 | ||
820 | runtime->delay = delay; | |
821 | ||
822 | return offset; | |
823 | } | |
824 | ||
01d7584c LG |
825 | /* connect a FE and BE */ |
826 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
827 | struct snd_soc_pcm_runtime *be, int stream) | |
828 | { | |
829 | struct snd_soc_dpcm *dpcm; | |
830 | ||
831 | /* only add new dpcms */ | |
832 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
833 | if (dpcm->be == be && dpcm->fe == fe) | |
834 | return 0; | |
835 | } | |
836 | ||
837 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
838 | if (!dpcm) | |
839 | return -ENOMEM; | |
840 | ||
841 | dpcm->be = be; | |
842 | dpcm->fe = fe; | |
843 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
844 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
845 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
846 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
847 | ||
7cc302d2 | 848 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
849 | stream ? "capture" : "playback", fe->dai_link->name, |
850 | stream ? "<-" : "->", be->dai_link->name); | |
851 | ||
f86dcef8 LG |
852 | #ifdef CONFIG_DEBUG_FS |
853 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
854 | fe->debugfs_dpcm_root, &dpcm->state); | |
855 | #endif | |
01d7584c LG |
856 | return 1; |
857 | } | |
858 | ||
859 | /* reparent a BE onto another FE */ | |
860 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
861 | struct snd_soc_pcm_runtime *be, int stream) | |
862 | { | |
863 | struct snd_soc_dpcm *dpcm; | |
864 | struct snd_pcm_substream *fe_substream, *be_substream; | |
865 | ||
866 | /* reparent if BE is connected to other FEs */ | |
867 | if (!be->dpcm[stream].users) | |
868 | return; | |
869 | ||
870 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
871 | ||
872 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
873 | if (dpcm->fe == fe) | |
874 | continue; | |
875 | ||
7cc302d2 | 876 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
877 | stream ? "capture" : "playback", |
878 | dpcm->fe->dai_link->name, | |
879 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
880 | ||
881 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
882 | be_substream->runtime = fe_substream->runtime; | |
883 | break; | |
884 | } | |
885 | } | |
886 | ||
887 | /* disconnect a BE and FE */ | |
23607025 | 888 | void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
889 | { |
890 | struct snd_soc_dpcm *dpcm, *d; | |
891 | ||
892 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 893 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
894 | stream ? "capture" : "playback", |
895 | dpcm->be->dai_link->name); | |
896 | ||
897 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
898 | continue; | |
899 | ||
7cc302d2 | 900 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
901 | stream ? "capture" : "playback", fe->dai_link->name, |
902 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
903 | ||
904 | /* BEs still alive need new FE */ | |
905 | dpcm_be_reparent(fe, dpcm->be, stream); | |
906 | ||
f86dcef8 LG |
907 | #ifdef CONFIG_DEBUG_FS |
908 | debugfs_remove(dpcm->debugfs_state); | |
909 | #endif | |
01d7584c LG |
910 | list_del(&dpcm->list_be); |
911 | list_del(&dpcm->list_fe); | |
912 | kfree(dpcm); | |
913 | } | |
914 | } | |
915 | ||
916 | /* get BE for DAI widget and stream */ | |
917 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
918 | struct snd_soc_dapm_widget *widget, int stream) | |
919 | { | |
920 | struct snd_soc_pcm_runtime *be; | |
921 | int i; | |
922 | ||
923 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
924 | for (i = 0; i < card->num_links; i++) { | |
925 | be = &card->rtd[i]; | |
926 | ||
35ea0655 LG |
927 | if (!be->dai_link->no_pcm) |
928 | continue; | |
929 | ||
01d7584c LG |
930 | if (be->cpu_dai->playback_widget == widget || |
931 | be->codec_dai->playback_widget == widget) | |
932 | return be; | |
933 | } | |
934 | } else { | |
935 | ||
936 | for (i = 0; i < card->num_links; i++) { | |
937 | be = &card->rtd[i]; | |
938 | ||
35ea0655 LG |
939 | if (!be->dai_link->no_pcm) |
940 | continue; | |
941 | ||
01d7584c LG |
942 | if (be->cpu_dai->capture_widget == widget || |
943 | be->codec_dai->capture_widget == widget) | |
944 | return be; | |
945 | } | |
946 | } | |
947 | ||
103d84a3 | 948 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
949 | stream ? "capture" : "playback", widget->name); |
950 | return NULL; | |
951 | } | |
952 | ||
953 | static inline struct snd_soc_dapm_widget * | |
954 | rtd_get_cpu_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
955 | { | |
956 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
957 | return rtd->cpu_dai->playback_widget; | |
958 | else | |
959 | return rtd->cpu_dai->capture_widget; | |
960 | } | |
961 | ||
962 | static inline struct snd_soc_dapm_widget * | |
963 | rtd_get_codec_widget(struct snd_soc_pcm_runtime *rtd, int stream) | |
964 | { | |
965 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
966 | return rtd->codec_dai->playback_widget; | |
967 | else | |
968 | return rtd->codec_dai->capture_widget; | |
969 | } | |
970 | ||
971 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
972 | struct snd_soc_dapm_widget *widget) | |
973 | { | |
974 | int i; | |
975 | ||
976 | for (i = 0; i < list->num_widgets; i++) { | |
977 | if (widget == list->widgets[i]) | |
978 | return 1; | |
979 | } | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
23607025 | 984 | int dpcm_path_get(struct snd_soc_pcm_runtime *fe, |
01d7584c LG |
985 | int stream, struct snd_soc_dapm_widget_list **list_) |
986 | { | |
987 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
988 | struct snd_soc_dapm_widget_list *list; | |
989 | int paths; | |
990 | ||
991 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
992 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
993 | if (list == NULL) | |
994 | return -ENOMEM; | |
995 | ||
996 | /* get number of valid DAI paths and their widgets */ | |
997 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
998 | ||
103d84a3 | 999 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
1000 | stream ? "capture" : "playback"); |
1001 | ||
1002 | *list_ = list; | |
1003 | return paths; | |
1004 | } | |
1005 | ||
01d7584c LG |
1006 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, |
1007 | struct snd_soc_dapm_widget_list **list_) | |
1008 | { | |
1009 | struct snd_soc_dpcm *dpcm; | |
1010 | struct snd_soc_dapm_widget_list *list = *list_; | |
1011 | struct snd_soc_dapm_widget *widget; | |
1012 | int prune = 0; | |
1013 | ||
1014 | /* Destroy any old FE <--> BE connections */ | |
1015 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1016 | ||
1017 | /* is there a valid CPU DAI widget for this BE */ | |
1018 | widget = rtd_get_cpu_widget(dpcm->be, stream); | |
1019 | ||
1020 | /* prune the BE if it's no longer in our active list */ | |
1021 | if (widget && widget_in_list(list, widget)) | |
1022 | continue; | |
1023 | ||
1024 | /* is there a valid CODEC DAI widget for this BE */ | |
1025 | widget = rtd_get_codec_widget(dpcm->be, stream); | |
1026 | ||
1027 | /* prune the BE if it's no longer in our active list */ | |
1028 | if (widget && widget_in_list(list, widget)) | |
1029 | continue; | |
1030 | ||
103d84a3 | 1031 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
1032 | stream ? "capture" : "playback", |
1033 | dpcm->be->dai_link->name, fe->dai_link->name); | |
1034 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1035 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1036 | prune++; | |
1037 | } | |
1038 | ||
103d84a3 | 1039 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
1040 | return prune; |
1041 | } | |
1042 | ||
1043 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
1044 | struct snd_soc_dapm_widget_list **list_) | |
1045 | { | |
1046 | struct snd_soc_card *card = fe->card; | |
1047 | struct snd_soc_dapm_widget_list *list = *list_; | |
1048 | struct snd_soc_pcm_runtime *be; | |
1049 | int i, new = 0, err; | |
1050 | ||
1051 | /* Create any new FE <--> BE connections */ | |
1052 | for (i = 0; i < list->num_widgets; i++) { | |
1053 | ||
4616274d MB |
1054 | switch (list->widgets[i]->id) { |
1055 | case snd_soc_dapm_dai_in: | |
1056 | case snd_soc_dapm_dai_out: | |
1057 | break; | |
1058 | default: | |
01d7584c | 1059 | continue; |
4616274d | 1060 | } |
01d7584c LG |
1061 | |
1062 | /* is there a valid BE rtd for this widget */ | |
1063 | be = dpcm_get_be(card, list->widgets[i], stream); | |
1064 | if (!be) { | |
103d84a3 | 1065 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
1066 | list->widgets[i]->name); |
1067 | continue; | |
1068 | } | |
1069 | ||
1070 | /* make sure BE is a real BE */ | |
1071 | if (!be->dai_link->no_pcm) | |
1072 | continue; | |
1073 | ||
1074 | /* don't connect if FE is not running */ | |
23607025 | 1075 | if (!fe->dpcm[stream].runtime && !fe->fe_compr) |
01d7584c LG |
1076 | continue; |
1077 | ||
1078 | /* newly connected FE and BE */ | |
1079 | err = dpcm_be_connect(fe, be, stream); | |
1080 | if (err < 0) { | |
103d84a3 | 1081 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
1082 | list->widgets[i]->name); |
1083 | break; | |
1084 | } else if (err == 0) /* already connected */ | |
1085 | continue; | |
1086 | ||
1087 | /* new */ | |
1088 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1089 | new++; | |
1090 | } | |
1091 | ||
103d84a3 | 1092 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
1093 | return new; |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * Find the corresponding BE DAIs that source or sink audio to this | |
1098 | * FE substream. | |
1099 | */ | |
23607025 | 1100 | int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, |
01d7584c LG |
1101 | int stream, struct snd_soc_dapm_widget_list **list, int new) |
1102 | { | |
1103 | if (new) | |
1104 | return dpcm_add_paths(fe, stream, list); | |
1105 | else | |
1106 | return dpcm_prune_paths(fe, stream, list); | |
1107 | } | |
1108 | ||
23607025 | 1109 | void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1110 | { |
1111 | struct snd_soc_dpcm *dpcm; | |
1112 | ||
1113 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1114 | dpcm->be->dpcm[stream].runtime_update = | |
1115 | SND_SOC_DPCM_UPDATE_NO; | |
1116 | } | |
1117 | ||
1118 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1119 | int stream) | |
1120 | { | |
1121 | struct snd_soc_dpcm *dpcm; | |
1122 | ||
1123 | /* disable any enabled and non active backends */ | |
1124 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1125 | ||
1126 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1127 | struct snd_pcm_substream *be_substream = | |
1128 | snd_soc_dpcm_get_substream(be, stream); | |
1129 | ||
1130 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1131 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1132 | stream ? "capture" : "playback", |
1133 | be->dpcm[stream].state); | |
1134 | ||
1135 | if (--be->dpcm[stream].users != 0) | |
1136 | continue; | |
1137 | ||
1138 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1139 | continue; | |
1140 | ||
1141 | soc_pcm_close(be_substream); | |
1142 | be_substream->runtime = NULL; | |
1143 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1144 | } | |
1145 | } | |
1146 | ||
23607025 | 1147 | int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1148 | { |
1149 | struct snd_soc_dpcm *dpcm; | |
1150 | int err, count = 0; | |
1151 | ||
1152 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1153 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1154 | ||
1155 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1156 | struct snd_pcm_substream *be_substream = | |
1157 | snd_soc_dpcm_get_substream(be, stream); | |
1158 | ||
2062b4c5 RKAL |
1159 | if (!be_substream) { |
1160 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1161 | stream ? "capture" : "playback"); | |
1162 | continue; | |
1163 | } | |
1164 | ||
01d7584c LG |
1165 | /* is this op for this BE ? */ |
1166 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1167 | continue; | |
1168 | ||
1169 | /* first time the dpcm is open ? */ | |
1170 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1171 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1172 | stream ? "capture" : "playback", |
1173 | be->dpcm[stream].state); | |
1174 | ||
1175 | if (be->dpcm[stream].users++ != 0) | |
1176 | continue; | |
1177 | ||
1178 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1179 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1180 | continue; | |
1181 | ||
2062b4c5 RKAL |
1182 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1183 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c LG |
1184 | |
1185 | be_substream->runtime = be->dpcm[stream].runtime; | |
1186 | err = soc_pcm_open(be_substream); | |
1187 | if (err < 0) { | |
103d84a3 | 1188 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1189 | be->dpcm[stream].users--; |
1190 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1191 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1192 | stream ? "capture" : "playback", |
1193 | be->dpcm[stream].state); | |
1194 | ||
1195 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1196 | goto unwind; | |
1197 | } | |
1198 | ||
1199 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1200 | count++; | |
1201 | } | |
1202 | ||
1203 | return count; | |
1204 | ||
1205 | unwind: | |
1206 | /* disable any enabled and non active backends */ | |
1207 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1208 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1209 | struct snd_pcm_substream *be_substream = | |
1210 | snd_soc_dpcm_get_substream(be, stream); | |
1211 | ||
1212 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1213 | continue; | |
1214 | ||
1215 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1216 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1217 | stream ? "capture" : "playback", |
1218 | be->dpcm[stream].state); | |
1219 | ||
1220 | if (--be->dpcm[stream].users != 0) | |
1221 | continue; | |
1222 | ||
1223 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1224 | continue; | |
1225 | ||
1226 | soc_pcm_close(be_substream); | |
1227 | be_substream->runtime = NULL; | |
1228 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1229 | } | |
1230 | ||
1231 | return err; | |
1232 | } | |
1233 | ||
08ae9b45 LPC |
1234 | static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
1235 | struct snd_soc_pcm_stream *stream) | |
1236 | { | |
1237 | runtime->hw.rate_min = stream->rate_min; | |
1238 | runtime->hw.rate_max = stream->rate_max; | |
1239 | runtime->hw.channels_min = stream->channels_min; | |
1240 | runtime->hw.channels_max = stream->channels_max; | |
002220a9 LPC |
1241 | if (runtime->hw.formats) |
1242 | runtime->hw.formats &= stream->formats; | |
1243 | else | |
1244 | runtime->hw.formats = stream->formats; | |
08ae9b45 LPC |
1245 | runtime->hw.rates = stream->rates; |
1246 | } | |
1247 | ||
45c0a188 | 1248 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1249 | { |
1250 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1251 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1252 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1253 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1254 | ||
08ae9b45 LPC |
1255 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
1256 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback); | |
1257 | else | |
1258 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture); | |
01d7584c LG |
1259 | } |
1260 | ||
1261 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1262 | { | |
1263 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1264 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1265 | int stream = fe_substream->stream, ret = 0; | |
1266 | ||
1267 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1268 | ||
1269 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1270 | if (ret < 0) { | |
103d84a3 | 1271 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1272 | goto be_err; |
1273 | } | |
1274 | ||
103d84a3 | 1275 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1276 | |
1277 | /* start the DAI frontend */ | |
1278 | ret = soc_pcm_open(fe_substream); | |
1279 | if (ret < 0) { | |
103d84a3 | 1280 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1281 | goto unwind; |
1282 | } | |
1283 | ||
1284 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1285 | ||
1286 | dpcm_set_fe_runtime(fe_substream); | |
1287 | snd_pcm_limit_hw_rates(runtime); | |
1288 | ||
1289 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1290 | return 0; | |
1291 | ||
1292 | unwind: | |
1293 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1294 | be_err: | |
1295 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1296 | return ret; | |
1297 | } | |
1298 | ||
23607025 | 1299 | int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1300 | { |
1301 | struct snd_soc_dpcm *dpcm; | |
1302 | ||
1303 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1304 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1305 | ||
1306 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1307 | struct snd_pcm_substream *be_substream = | |
1308 | snd_soc_dpcm_get_substream(be, stream); | |
1309 | ||
1310 | /* is this op for this BE ? */ | |
1311 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1312 | continue; | |
1313 | ||
1314 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1315 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1316 | stream ? "capture" : "playback", |
1317 | be->dpcm[stream].state); | |
1318 | ||
1319 | if (--be->dpcm[stream].users != 0) | |
1320 | continue; | |
1321 | ||
1322 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1323 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1324 | continue; | |
1325 | ||
103d84a3 | 1326 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1327 | dpcm->fe->dai_link->name); |
1328 | ||
1329 | soc_pcm_close(be_substream); | |
1330 | be_substream->runtime = NULL; | |
1331 | ||
1332 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1333 | } | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1338 | { | |
1339 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1340 | int stream = substream->stream; | |
1341 | ||
1342 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1343 | ||
1344 | /* shutdown the BEs */ | |
1345 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1346 | ||
103d84a3 | 1347 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1348 | |
1349 | /* now shutdown the frontend */ | |
1350 | soc_pcm_close(substream); | |
1351 | ||
1352 | /* run the stream event for each BE */ | |
1353 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1354 | ||
1355 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1356 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1357 | return 0; | |
1358 | } | |
1359 | ||
23607025 | 1360 | int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1361 | { |
1362 | struct snd_soc_dpcm *dpcm; | |
1363 | ||
1364 | /* only hw_params backends that are either sinks or sources | |
1365 | * to this frontend DAI */ | |
1366 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1367 | ||
1368 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1369 | struct snd_pcm_substream *be_substream = | |
1370 | snd_soc_dpcm_get_substream(be, stream); | |
1371 | ||
1372 | /* is this op for this BE ? */ | |
1373 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1374 | continue; | |
1375 | ||
1376 | /* only free hw when no longer used - check all FEs */ | |
1377 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1378 | continue; | |
1379 | ||
1380 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1381 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1382 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1383 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1384 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1385 | continue; | |
1386 | ||
103d84a3 | 1387 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1388 | dpcm->fe->dai_link->name); |
1389 | ||
1390 | soc_pcm_hw_free(be_substream); | |
1391 | ||
1392 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1393 | } | |
1394 | ||
1395 | return 0; | |
1396 | } | |
1397 | ||
45c0a188 | 1398 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1399 | { |
1400 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1401 | int err, stream = substream->stream; | |
1402 | ||
1403 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1404 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1405 | ||
103d84a3 | 1406 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1407 | |
1408 | /* call hw_free on the frontend */ | |
1409 | err = soc_pcm_hw_free(substream); | |
1410 | if (err < 0) | |
103d84a3 | 1411 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1412 | fe->dai_link->name); |
1413 | ||
1414 | /* only hw_params backends that are either sinks or sources | |
1415 | * to this frontend DAI */ | |
1416 | err = dpcm_be_dai_hw_free(fe, stream); | |
1417 | ||
1418 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1419 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1420 | ||
1421 | mutex_unlock(&fe->card->mutex); | |
1422 | return 0; | |
1423 | } | |
1424 | ||
23607025 | 1425 | int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1426 | { |
1427 | struct snd_soc_dpcm *dpcm; | |
1428 | int ret; | |
1429 | ||
1430 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1431 | ||
1432 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1433 | struct snd_pcm_substream *be_substream = | |
1434 | snd_soc_dpcm_get_substream(be, stream); | |
1435 | ||
1436 | /* is this op for this BE ? */ | |
1437 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1438 | continue; | |
1439 | ||
1440 | /* only allow hw_params() if no connected FEs are running */ | |
1441 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1442 | continue; | |
1443 | ||
1444 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1445 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1446 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1447 | continue; | |
1448 | ||
103d84a3 | 1449 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1450 | dpcm->fe->dai_link->name); |
1451 | ||
1452 | /* copy params for each dpcm */ | |
1453 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1454 | sizeof(struct snd_pcm_hw_params)); | |
1455 | ||
1456 | /* perform any hw_params fixups */ | |
1457 | if (be->dai_link->be_hw_params_fixup) { | |
1458 | ret = be->dai_link->be_hw_params_fixup(be, | |
1459 | &dpcm->hw_params); | |
1460 | if (ret < 0) { | |
1461 | dev_err(be->dev, | |
103d84a3 | 1462 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1463 | ret); |
1464 | goto unwind; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1469 | if (ret < 0) { | |
1470 | dev_err(dpcm->be->dev, | |
103d84a3 | 1471 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1472 | goto unwind; |
1473 | } | |
1474 | ||
1475 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1476 | } | |
1477 | return 0; | |
1478 | ||
1479 | unwind: | |
1480 | /* disable any enabled and non active backends */ | |
1481 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1482 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1483 | struct snd_pcm_substream *be_substream = | |
1484 | snd_soc_dpcm_get_substream(be, stream); | |
1485 | ||
1486 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1487 | continue; | |
1488 | ||
1489 | /* only allow hw_free() if no connected FEs are running */ | |
1490 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1491 | continue; | |
1492 | ||
1493 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1494 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1495 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1496 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1497 | continue; | |
1498 | ||
1499 | soc_pcm_hw_free(be_substream); | |
1500 | } | |
1501 | ||
1502 | return ret; | |
1503 | } | |
1504 | ||
45c0a188 MB |
1505 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1506 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1507 | { |
1508 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1509 | int ret, stream = substream->stream; | |
1510 | ||
1511 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1512 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1513 | ||
1514 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1515 | sizeof(struct snd_pcm_hw_params)); | |
1516 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1517 | if (ret < 0) { | |
103d84a3 | 1518 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1519 | goto out; |
1520 | } | |
1521 | ||
103d84a3 | 1522 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1523 | fe->dai_link->name, params_rate(params), |
1524 | params_channels(params), params_format(params)); | |
1525 | ||
1526 | /* call hw_params on the frontend */ | |
1527 | ret = soc_pcm_hw_params(substream, params); | |
1528 | if (ret < 0) { | |
103d84a3 | 1529 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1530 | dpcm_be_dai_hw_free(fe, stream); |
1531 | } else | |
1532 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1533 | ||
1534 | out: | |
1535 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1536 | mutex_unlock(&fe->card->mutex); | |
1537 | return ret; | |
1538 | } | |
1539 | ||
1540 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1541 | struct snd_pcm_substream *substream, int cmd) | |
1542 | { | |
1543 | int ret; | |
1544 | ||
103d84a3 | 1545 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1546 | dpcm->fe->dai_link->name, cmd); |
1547 | ||
1548 | ret = soc_pcm_trigger(substream, cmd); | |
1549 | if (ret < 0) | |
103d84a3 | 1550 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1551 | |
1552 | return ret; | |
1553 | } | |
1554 | ||
23607025 | 1555 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
45c0a188 | 1556 | int cmd) |
01d7584c LG |
1557 | { |
1558 | struct snd_soc_dpcm *dpcm; | |
1559 | int ret = 0; | |
1560 | ||
1561 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1562 | ||
1563 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1564 | struct snd_pcm_substream *be_substream = | |
1565 | snd_soc_dpcm_get_substream(be, stream); | |
1566 | ||
1567 | /* is this op for this BE ? */ | |
1568 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1569 | continue; | |
1570 | ||
1571 | switch (cmd) { | |
1572 | case SNDRV_PCM_TRIGGER_START: | |
1573 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1574 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1575 | continue; | |
1576 | ||
1577 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1578 | if (ret) | |
1579 | return ret; | |
1580 | ||
1581 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1582 | break; | |
1583 | case SNDRV_PCM_TRIGGER_RESUME: | |
1584 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1585 | continue; | |
1586 | ||
1587 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1588 | if (ret) | |
1589 | return ret; | |
1590 | ||
1591 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1592 | break; | |
1593 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1594 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1595 | continue; | |
1596 | ||
1597 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1598 | if (ret) | |
1599 | return ret; | |
1600 | ||
1601 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1602 | break; | |
1603 | case SNDRV_PCM_TRIGGER_STOP: | |
1604 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1605 | continue; | |
1606 | ||
1607 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1608 | continue; | |
1609 | ||
1610 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1611 | if (ret) | |
1612 | return ret; | |
1613 | ||
1614 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1615 | break; | |
1616 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1617 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) | |
1618 | continue; | |
1619 | ||
1620 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1621 | continue; | |
1622 | ||
1623 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1624 | if (ret) | |
1625 | return ret; | |
1626 | ||
1627 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1628 | break; | |
1629 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1630 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1631 | continue; | |
1632 | ||
1633 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1634 | continue; | |
1635 | ||
1636 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1637 | if (ret) | |
1638 | return ret; | |
1639 | ||
1640 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1641 | break; | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | return ret; | |
1646 | } | |
1647 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1648 | ||
45c0a188 | 1649 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1650 | { |
1651 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1652 | int stream = substream->stream, ret; | |
1653 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1654 | ||
1655 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1656 | ||
1657 | switch (trigger) { | |
1658 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1659 | /* call trigger on the frontend before the backend. */ | |
1660 | ||
103d84a3 | 1661 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1662 | fe->dai_link->name, cmd); |
1663 | ||
1664 | ret = soc_pcm_trigger(substream, cmd); | |
1665 | if (ret < 0) { | |
103d84a3 | 1666 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1667 | goto out; |
1668 | } | |
1669 | ||
1670 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1671 | break; | |
1672 | case SND_SOC_DPCM_TRIGGER_POST: | |
1673 | /* call trigger on the frontend after the backend. */ | |
1674 | ||
1675 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1676 | if (ret < 0) { | |
103d84a3 | 1677 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1678 | goto out; |
1679 | } | |
1680 | ||
103d84a3 | 1681 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1682 | fe->dai_link->name, cmd); |
1683 | ||
1684 | ret = soc_pcm_trigger(substream, cmd); | |
1685 | break; | |
07bf84aa LG |
1686 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1687 | /* bespoke trigger() - handles both FE and BEs */ | |
1688 | ||
103d84a3 | 1689 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1690 | fe->dai_link->name, cmd); |
1691 | ||
1692 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1693 | if (ret < 0) { | |
103d84a3 | 1694 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1695 | goto out; |
1696 | } | |
1697 | break; | |
01d7584c | 1698 | default: |
103d84a3 | 1699 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1700 | fe->dai_link->name); |
1701 | ret = -EINVAL; | |
1702 | goto out; | |
1703 | } | |
1704 | ||
1705 | switch (cmd) { | |
1706 | case SNDRV_PCM_TRIGGER_START: | |
1707 | case SNDRV_PCM_TRIGGER_RESUME: | |
1708 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1709 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1710 | break; | |
1711 | case SNDRV_PCM_TRIGGER_STOP: | |
1712 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1713 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1714 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1715 | break; | |
1716 | } | |
1717 | ||
1718 | out: | |
1719 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1720 | return ret; | |
1721 | } | |
1722 | ||
23607025 | 1723 | int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1724 | { |
1725 | struct snd_soc_dpcm *dpcm; | |
1726 | int ret = 0; | |
1727 | ||
1728 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1729 | ||
1730 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1731 | struct snd_pcm_substream *be_substream = | |
1732 | snd_soc_dpcm_get_substream(be, stream); | |
1733 | ||
1734 | /* is this op for this BE ? */ | |
1735 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1736 | continue; | |
1737 | ||
1738 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1739 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1740 | continue; | |
1741 | ||
103d84a3 | 1742 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
1743 | dpcm->fe->dai_link->name); |
1744 | ||
1745 | ret = soc_pcm_prepare(be_substream); | |
1746 | if (ret < 0) { | |
103d84a3 | 1747 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
1748 | ret); |
1749 | break; | |
1750 | } | |
1751 | ||
1752 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1753 | } | |
1754 | return ret; | |
1755 | } | |
1756 | ||
45c0a188 | 1757 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
1758 | { |
1759 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1760 | int stream = substream->stream, ret = 0; | |
1761 | ||
1762 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1763 | ||
103d84a3 | 1764 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
1765 | |
1766 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1767 | ||
1768 | /* there is no point preparing this FE if there are no BEs */ | |
1769 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 1770 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
1771 | fe->dai_link->name); |
1772 | ret = -EINVAL; | |
1773 | goto out; | |
1774 | } | |
1775 | ||
1776 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
1777 | if (ret < 0) | |
1778 | goto out; | |
1779 | ||
1780 | /* call prepare on the frontend */ | |
1781 | ret = soc_pcm_prepare(substream); | |
1782 | if (ret < 0) { | |
103d84a3 | 1783 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
1784 | fe->dai_link->name); |
1785 | goto out; | |
1786 | } | |
1787 | ||
1788 | /* run the stream event for each BE */ | |
1789 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
1790 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
1791 | ||
1792 | out: | |
1793 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1794 | mutex_unlock(&fe->card->mutex); | |
1795 | ||
1796 | return ret; | |
1797 | } | |
1798 | ||
be3f3f2c LG |
1799 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
1800 | unsigned int cmd, void *arg) | |
1801 | { | |
1802 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1803 | struct snd_soc_platform *platform = rtd->platform; | |
1804 | ||
c5914b0a | 1805 | if (platform->driver->ops && platform->driver->ops->ioctl) |
be3f3f2c LG |
1806 | return platform->driver->ops->ioctl(substream, cmd, arg); |
1807 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
1808 | } | |
1809 | ||
618dae11 LG |
1810 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
1811 | { | |
07bf84aa LG |
1812 | struct snd_pcm_substream *substream = |
1813 | snd_soc_dpcm_get_substream(fe, stream); | |
1814 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
1815 | int err; |
1816 | ||
103d84a3 | 1817 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
1818 | stream ? "capture" : "playback", fe->dai_link->name); |
1819 | ||
07bf84aa LG |
1820 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1821 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 1822 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
1823 | fe->dai_link->name); |
1824 | ||
1825 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
1826 | if (err < 0) | |
103d84a3 | 1827 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1828 | } else { |
103d84a3 | 1829 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
1830 | fe->dai_link->name); |
1831 | ||
1832 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
1833 | if (err < 0) | |
103d84a3 | 1834 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 1835 | } |
618dae11 LG |
1836 | |
1837 | err = dpcm_be_dai_hw_free(fe, stream); | |
1838 | if (err < 0) | |
103d84a3 | 1839 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
1840 | |
1841 | err = dpcm_be_dai_shutdown(fe, stream); | |
1842 | if (err < 0) | |
103d84a3 | 1843 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
1844 | |
1845 | /* run the stream event for each BE */ | |
1846 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1847 | ||
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
1852 | { | |
07bf84aa LG |
1853 | struct snd_pcm_substream *substream = |
1854 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 1855 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 1856 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
1857 | int ret; |
1858 | ||
103d84a3 | 1859 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
1860 | stream ? "capture" : "playback", fe->dai_link->name); |
1861 | ||
1862 | /* Only start the BE if the FE is ready */ | |
1863 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
1864 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
1865 | return -EINVAL; | |
1866 | ||
1867 | /* startup must always be called for new BEs */ | |
1868 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 1869 | if (ret < 0) |
618dae11 | 1870 | goto disconnect; |
618dae11 LG |
1871 | |
1872 | /* keep going if FE state is > open */ | |
1873 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
1874 | return 0; | |
01d7584c | 1875 | |
618dae11 | 1876 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 1877 | if (ret < 0) |
618dae11 | 1878 | goto close; |
618dae11 LG |
1879 | |
1880 | /* keep going if FE state is > hw_params */ | |
1881 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
1882 | return 0; | |
1883 | ||
1884 | ||
1885 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 1886 | if (ret < 0) |
618dae11 | 1887 | goto hw_free; |
618dae11 LG |
1888 | |
1889 | /* run the stream event for each BE */ | |
1890 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
1891 | ||
1892 | /* keep going if FE state is > prepare */ | |
1893 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
1894 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
1895 | return 0; | |
1896 | ||
07bf84aa LG |
1897 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
1898 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 1899 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 1900 | fe->dai_link->name); |
618dae11 | 1901 | |
07bf84aa LG |
1902 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
1903 | if (ret < 0) { | |
103d84a3 | 1904 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
1905 | goto hw_free; |
1906 | } | |
1907 | } else { | |
103d84a3 | 1908 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
1909 | fe->dai_link->name); |
1910 | ||
1911 | ret = dpcm_be_dai_trigger(fe, stream, | |
1912 | SNDRV_PCM_TRIGGER_START); | |
1913 | if (ret < 0) { | |
103d84a3 | 1914 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1915 | goto hw_free; |
1916 | } | |
618dae11 LG |
1917 | } |
1918 | ||
1919 | return 0; | |
1920 | ||
1921 | hw_free: | |
1922 | dpcm_be_dai_hw_free(fe, stream); | |
1923 | close: | |
1924 | dpcm_be_dai_shutdown(fe, stream); | |
1925 | disconnect: | |
1926 | /* disconnect any non started BEs */ | |
1927 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1928 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1929 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1930 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1931 | } | |
1932 | ||
1933 | return ret; | |
1934 | } | |
1935 | ||
1936 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1937 | { | |
1938 | int ret; | |
1939 | ||
1940 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1941 | ret = dpcm_run_update_startup(fe, stream); | |
1942 | if (ret < 0) | |
103d84a3 | 1943 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
1944 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1945 | ||
1946 | return ret; | |
1947 | } | |
1948 | ||
1949 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
1950 | { | |
1951 | int ret; | |
1952 | ||
1953 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1954 | ret = dpcm_run_update_shutdown(fe, stream); | |
1955 | if (ret < 0) | |
103d84a3 | 1956 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
1957 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
1958 | ||
1959 | return ret; | |
1960 | } | |
1961 | ||
1962 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
1963 | * any DAI links. | |
1964 | */ | |
c3f48ae6 | 1965 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 1966 | { |
618dae11 LG |
1967 | int i, old, new, paths; |
1968 | ||
618dae11 LG |
1969 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
1970 | for (i = 0; i < card->num_rtd; i++) { | |
1971 | struct snd_soc_dapm_widget_list *list; | |
1972 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
1973 | ||
1974 | /* make sure link is FE */ | |
1975 | if (!fe->dai_link->dynamic) | |
1976 | continue; | |
1977 | ||
1978 | /* only check active links */ | |
1979 | if (!fe->cpu_dai->active) | |
1980 | continue; | |
1981 | ||
1982 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 1983 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
1984 | fe->dai_link->name); |
1985 | ||
1986 | /* skip if FE doesn't have playback capability */ | |
1987 | if (!fe->cpu_dai->driver->playback.channels_min) | |
1988 | goto capture; | |
1989 | ||
1990 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
1991 | if (paths < 0) { | |
e4ad1acc | 1992 | dpcm_path_put(&list); |
103d84a3 | 1993 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
1994 | fe->dai_link->name, "playback"); |
1995 | mutex_unlock(&card->mutex); | |
1996 | return paths; | |
1997 | } | |
1998 | ||
1999 | /* update any new playback paths */ | |
2000 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
2001 | if (new) { | |
2002 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2003 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2004 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2005 | } | |
2006 | ||
2007 | /* update any old playback paths */ | |
2008 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
2009 | if (old) { | |
2010 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2011 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2012 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2013 | } | |
2014 | ||
2015 | capture: | |
2016 | /* skip if FE doesn't have capture capability */ | |
2017 | if (!fe->cpu_dai->driver->capture.channels_min) | |
2018 | continue; | |
2019 | ||
2020 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
2021 | if (paths < 0) { | |
e4ad1acc | 2022 | dpcm_path_put(&list); |
103d84a3 | 2023 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
2024 | fe->dai_link->name, "capture"); |
2025 | mutex_unlock(&card->mutex); | |
2026 | return paths; | |
2027 | } | |
2028 | ||
2029 | /* update any new capture paths */ | |
2030 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
2031 | if (new) { | |
2032 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2033 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2034 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2035 | } | |
2036 | ||
2037 | /* update any old capture paths */ | |
2038 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
2039 | if (old) { | |
2040 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2041 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2042 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2043 | } | |
2044 | ||
2045 | dpcm_path_put(&list); | |
2046 | } | |
2047 | ||
2048 | mutex_unlock(&card->mutex); | |
2049 | return 0; | |
2050 | } | |
01d7584c LG |
2051 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
2052 | { | |
2053 | struct snd_soc_dpcm *dpcm; | |
2054 | struct list_head *clients = | |
2055 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
2056 | ||
2057 | list_for_each_entry(dpcm, clients, list_be) { | |
2058 | ||
2059 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2060 | struct snd_soc_dai *dai = be->codec_dai; | |
2061 | struct snd_soc_dai_driver *drv = dai->driver; | |
2062 | ||
2063 | if (be->dai_link->ignore_suspend) | |
2064 | continue; | |
2065 | ||
103d84a3 | 2066 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); |
01d7584c | 2067 | |
c5914b0a MB |
2068 | if (drv->ops && drv->ops->digital_mute && dai->playback_active) |
2069 | drv->ops->digital_mute(dai, mute); | |
01d7584c LG |
2070 | } |
2071 | ||
2072 | return 0; | |
2073 | } | |
2074 | ||
45c0a188 | 2075 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2076 | { |
2077 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2078 | struct snd_soc_dpcm *dpcm; | |
2079 | struct snd_soc_dapm_widget_list *list; | |
2080 | int ret; | |
2081 | int stream = fe_substream->stream; | |
2082 | ||
2083 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2084 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
2085 | ||
2086 | if (dpcm_path_get(fe, stream, &list) <= 0) { | |
e4ad1acc | 2087 | dpcm_path_put(&list); |
103d84a3 | 2088 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 2089 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
2090 | } |
2091 | ||
2092 | /* calculate valid and active FE <-> BE dpcms */ | |
2093 | dpcm_process_paths(fe, stream, &list, 1); | |
2094 | ||
2095 | ret = dpcm_fe_dai_startup(fe_substream); | |
2096 | if (ret < 0) { | |
2097 | /* clean up all links */ | |
2098 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2099 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2100 | ||
2101 | dpcm_be_disconnect(fe, stream); | |
2102 | fe->dpcm[stream].runtime = NULL; | |
2103 | } | |
2104 | ||
2105 | dpcm_clear_pending_state(fe, stream); | |
2106 | dpcm_path_put(&list); | |
2107 | mutex_unlock(&fe->card->mutex); | |
2108 | return ret; | |
2109 | } | |
2110 | ||
45c0a188 | 2111 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2112 | { |
2113 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2114 | struct snd_soc_dpcm *dpcm; | |
2115 | int stream = fe_substream->stream, ret; | |
2116 | ||
2117 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2118 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
2119 | ||
2120 | /* mark FE's links ready to prune */ | |
2121 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2122 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2123 | ||
2124 | dpcm_be_disconnect(fe, stream); | |
2125 | ||
2126 | fe->dpcm[stream].runtime = NULL; | |
2127 | mutex_unlock(&fe->card->mutex); | |
2128 | return ret; | |
2129 | } | |
2130 | ||
ddee627c LG |
2131 | /* create a new pcm */ |
2132 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2133 | { | |
ddee627c LG |
2134 | struct snd_soc_platform *platform = rtd->platform; |
2135 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
2136 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2137 | struct snd_pcm *pcm; | |
2138 | char new_name[64]; | |
2139 | int ret = 0, playback = 0, capture = 0; | |
2140 | ||
01d7584c | 2141 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
1e9de42f LG |
2142 | playback = rtd->dai_link->dpcm_playback; |
2143 | capture = rtd->dai_link->dpcm_capture; | |
01d7584c | 2144 | } else { |
05679092 MB |
2145 | if (codec_dai->driver->playback.channels_min && |
2146 | cpu_dai->driver->playback.channels_min) | |
01d7584c | 2147 | playback = 1; |
05679092 MB |
2148 | if (codec_dai->driver->capture.channels_min && |
2149 | cpu_dai->driver->capture.channels_min) | |
01d7584c LG |
2150 | capture = 1; |
2151 | } | |
2152 | ||
d6bead02 FE |
2153 | if (rtd->dai_link->playback_only) { |
2154 | playback = 1; | |
2155 | capture = 0; | |
2156 | } | |
2157 | ||
2158 | if (rtd->dai_link->capture_only) { | |
2159 | playback = 0; | |
2160 | capture = 1; | |
2161 | } | |
2162 | ||
01d7584c LG |
2163 | /* create the PCM */ |
2164 | if (rtd->dai_link->no_pcm) { | |
2165 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2166 | rtd->dai_link->stream_name); | |
2167 | ||
2168 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2169 | playback, capture, &pcm); | |
2170 | } else { | |
2171 | if (rtd->dai_link->dynamic) | |
2172 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2173 | rtd->dai_link->stream_name); | |
2174 | else | |
2175 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2176 | rtd->dai_link->stream_name, codec_dai->name, num); | |
2177 | ||
2178 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2179 | capture, &pcm); | |
2180 | } | |
ddee627c | 2181 | if (ret < 0) { |
103d84a3 | 2182 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2183 | rtd->dai_link->name); |
ddee627c LG |
2184 | return ret; |
2185 | } | |
103d84a3 | 2186 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2187 | |
2188 | /* DAPM dai link stream work */ | |
2189 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2190 | ||
2191 | rtd->pcm = pcm; | |
2192 | pcm->private_data = rtd; | |
01d7584c LG |
2193 | |
2194 | if (rtd->dai_link->no_pcm) { | |
2195 | if (playback) | |
2196 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2197 | if (capture) | |
2198 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2199 | goto out; | |
2200 | } | |
2201 | ||
2202 | /* ASoC PCM operations */ | |
2203 | if (rtd->dai_link->dynamic) { | |
2204 | rtd->ops.open = dpcm_fe_dai_open; | |
2205 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2206 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2207 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2208 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2209 | rtd->ops.close = dpcm_fe_dai_close; | |
2210 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2211 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2212 | } else { |
2213 | rtd->ops.open = soc_pcm_open; | |
2214 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2215 | rtd->ops.prepare = soc_pcm_prepare; | |
2216 | rtd->ops.trigger = soc_pcm_trigger; | |
2217 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2218 | rtd->ops.close = soc_pcm_close; | |
2219 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2220 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2221 | } |
2222 | ||
ddee627c | 2223 | if (platform->driver->ops) { |
01d7584c LG |
2224 | rtd->ops.ack = platform->driver->ops->ack; |
2225 | rtd->ops.copy = platform->driver->ops->copy; | |
2226 | rtd->ops.silence = platform->driver->ops->silence; | |
2227 | rtd->ops.page = platform->driver->ops->page; | |
2228 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2229 | } |
2230 | ||
2231 | if (playback) | |
01d7584c | 2232 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2233 | |
2234 | if (capture) | |
01d7584c | 2235 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2236 | |
2237 | if (platform->driver->pcm_new) { | |
2238 | ret = platform->driver->pcm_new(rtd); | |
2239 | if (ret < 0) { | |
b1bc7b3c MB |
2240 | dev_err(platform->dev, |
2241 | "ASoC: pcm constructor failed: %d\n", | |
2242 | ret); | |
ddee627c LG |
2243 | return ret; |
2244 | } | |
2245 | } | |
2246 | ||
2247 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2248 | out: |
7cc302d2 | 2249 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", codec_dai->name, |
ddee627c LG |
2250 | cpu_dai->name); |
2251 | return ret; | |
2252 | } | |
01d7584c LG |
2253 | |
2254 | /* is the current PCM operation for this FE ? */ | |
2255 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2256 | { | |
2257 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2258 | return 1; | |
2259 | return 0; | |
2260 | } | |
2261 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2262 | ||
2263 | /* is the current PCM operation for this BE ? */ | |
2264 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2265 | struct snd_soc_pcm_runtime *be, int stream) | |
2266 | { | |
2267 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2268 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2269 | be->dpcm[stream].runtime_update)) | |
2270 | return 1; | |
2271 | return 0; | |
2272 | } | |
2273 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2274 | ||
2275 | /* get the substream for this BE */ | |
2276 | struct snd_pcm_substream * | |
2277 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2278 | { | |
2279 | return be->pcm->streams[stream].substream; | |
2280 | } | |
2281 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2282 | ||
2283 | /* get the BE runtime state */ | |
2284 | enum snd_soc_dpcm_state | |
2285 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2286 | { | |
2287 | return be->dpcm[stream].state; | |
2288 | } | |
2289 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2290 | ||
2291 | /* set the BE runtime state */ | |
2292 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2293 | int stream, enum snd_soc_dpcm_state state) | |
2294 | { | |
2295 | be->dpcm[stream].state = state; | |
2296 | } | |
2297 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2298 | ||
2299 | /* | |
2300 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2301 | * are not running, paused or suspended for the specified stream direction. | |
2302 | */ | |
2303 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2304 | struct snd_soc_pcm_runtime *be, int stream) | |
2305 | { | |
2306 | struct snd_soc_dpcm *dpcm; | |
2307 | int state; | |
2308 | ||
2309 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2310 | ||
2311 | if (dpcm->fe == fe) | |
2312 | continue; | |
2313 | ||
2314 | state = dpcm->fe->dpcm[stream].state; | |
2315 | if (state == SND_SOC_DPCM_STATE_START || | |
2316 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2317 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | /* it's safe to free/stop this BE DAI */ | |
2322 | return 1; | |
2323 | } | |
2324 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2325 | ||
2326 | /* | |
2327 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2328 | * running, paused or suspended for the specified stream direction. | |
2329 | */ | |
2330 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2331 | struct snd_soc_pcm_runtime *be, int stream) | |
2332 | { | |
2333 | struct snd_soc_dpcm *dpcm; | |
2334 | int state; | |
2335 | ||
2336 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2337 | ||
2338 | if (dpcm->fe == fe) | |
2339 | continue; | |
2340 | ||
2341 | state = dpcm->fe->dpcm[stream].state; | |
2342 | if (state == SND_SOC_DPCM_STATE_START || | |
2343 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2344 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2345 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2346 | return 0; | |
2347 | } | |
2348 | ||
2349 | /* it's safe to change hw_params */ | |
2350 | return 1; | |
2351 | } | |
2352 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2353 | |
07bf84aa LG |
2354 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2355 | int cmd, struct snd_soc_platform *platform) | |
2356 | { | |
c5914b0a | 2357 | if (platform->driver->ops && platform->driver->ops->trigger) |
07bf84aa LG |
2358 | return platform->driver->ops->trigger(substream, cmd); |
2359 | return 0; | |
2360 | } | |
2361 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2362 | ||
f86dcef8 LG |
2363 | #ifdef CONFIG_DEBUG_FS |
2364 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2365 | { | |
2366 | switch (state) { | |
2367 | case SND_SOC_DPCM_STATE_NEW: | |
2368 | return "new"; | |
2369 | case SND_SOC_DPCM_STATE_OPEN: | |
2370 | return "open"; | |
2371 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2372 | return "hw_params"; | |
2373 | case SND_SOC_DPCM_STATE_PREPARE: | |
2374 | return "prepare"; | |
2375 | case SND_SOC_DPCM_STATE_START: | |
2376 | return "start"; | |
2377 | case SND_SOC_DPCM_STATE_STOP: | |
2378 | return "stop"; | |
2379 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2380 | return "suspend"; | |
2381 | case SND_SOC_DPCM_STATE_PAUSED: | |
2382 | return "paused"; | |
2383 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2384 | return "hw_free"; | |
2385 | case SND_SOC_DPCM_STATE_CLOSE: | |
2386 | return "close"; | |
2387 | } | |
2388 | ||
2389 | return "unknown"; | |
2390 | } | |
2391 | ||
f86dcef8 LG |
2392 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2393 | int stream, char *buf, size_t size) | |
2394 | { | |
2395 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2396 | struct snd_soc_dpcm *dpcm; | |
2397 | ssize_t offset = 0; | |
2398 | ||
2399 | /* FE state */ | |
2400 | offset += snprintf(buf + offset, size - offset, | |
2401 | "[%s - %s]\n", fe->dai_link->name, | |
2402 | stream ? "Capture" : "Playback"); | |
2403 | ||
2404 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2405 | dpcm_state_string(fe->dpcm[stream].state)); | |
2406 | ||
2407 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2408 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2409 | offset += snprintf(buf + offset, size - offset, | |
2410 | "Hardware Params: " | |
2411 | "Format = %s, Channels = %d, Rate = %d\n", | |
2412 | snd_pcm_format_name(params_format(params)), | |
2413 | params_channels(params), | |
2414 | params_rate(params)); | |
2415 | ||
2416 | /* BEs state */ | |
2417 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2418 | ||
2419 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2420 | offset += snprintf(buf + offset, size - offset, | |
2421 | " No active DSP links\n"); | |
2422 | goto out; | |
2423 | } | |
2424 | ||
2425 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2426 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2427 | params = &dpcm->hw_params; | |
2428 | ||
2429 | offset += snprintf(buf + offset, size - offset, | |
2430 | "- %s\n", be->dai_link->name); | |
2431 | ||
2432 | offset += snprintf(buf + offset, size - offset, | |
2433 | " State: %s\n", | |
2434 | dpcm_state_string(be->dpcm[stream].state)); | |
2435 | ||
2436 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2437 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2438 | offset += snprintf(buf + offset, size - offset, | |
2439 | " Hardware Params: " | |
2440 | "Format = %s, Channels = %d, Rate = %d\n", | |
2441 | snd_pcm_format_name(params_format(params)), | |
2442 | params_channels(params), | |
2443 | params_rate(params)); | |
2444 | } | |
2445 | ||
2446 | out: | |
2447 | return offset; | |
2448 | } | |
2449 | ||
2450 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2451 | size_t count, loff_t *ppos) | |
2452 | { | |
2453 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2454 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2455 | char *buf; | |
2456 | ||
2457 | buf = kmalloc(out_count, GFP_KERNEL); | |
2458 | if (!buf) | |
2459 | return -ENOMEM; | |
2460 | ||
2461 | if (fe->cpu_dai->driver->playback.channels_min) | |
2462 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2463 | buf + offset, out_count - offset); | |
2464 | ||
2465 | if (fe->cpu_dai->driver->capture.channels_min) | |
2466 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2467 | buf + offset, out_count - offset); | |
2468 | ||
f57b8488 | 2469 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2470 | |
f57b8488 LG |
2471 | kfree(buf); |
2472 | return ret; | |
f86dcef8 LG |
2473 | } |
2474 | ||
2475 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2476 | .open = simple_open, |
f86dcef8 LG |
2477 | .read = dpcm_state_read_file, |
2478 | .llseek = default_llseek, | |
2479 | }; | |
2480 | ||
2481 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2482 | { | |
b3bba9a1 MB |
2483 | if (!rtd->dai_link) |
2484 | return 0; | |
2485 | ||
f86dcef8 LG |
2486 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2487 | rtd->card->debugfs_card_root); | |
2488 | if (!rtd->debugfs_dpcm_root) { | |
2489 | dev_dbg(rtd->dev, | |
2490 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2491 | rtd->dai_link->name); | |
2492 | return -EINVAL; | |
2493 | } | |
2494 | ||
f57b8488 | 2495 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2496 | rtd->debugfs_dpcm_root, |
2497 | rtd, &dpcm_state_fops); | |
2498 | ||
2499 | return 0; | |
2500 | } | |
2501 | #endif |