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