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> | |
c8dd1fec | 10 | * Mark Brown <broonie@opensource.wolfsonmicro.com> |
ddee627c LG |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/delay.h> | |
988e8cc4 | 22 | #include <linux/pinctrl/consumer.h> |
d6652ef8 | 23 | #include <linux/pm_runtime.h> |
ddee627c LG |
24 | #include <linux/slab.h> |
25 | #include <linux/workqueue.h> | |
01d7584c | 26 | #include <linux/export.h> |
f86dcef8 | 27 | #include <linux/debugfs.h> |
ddee627c LG |
28 | #include <sound/core.h> |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/soc.h> | |
01d7584c | 32 | #include <sound/soc-dpcm.h> |
ddee627c LG |
33 | #include <sound/initval.h> |
34 | ||
01d7584c LG |
35 | #define DPCM_MAX_BE_USERS 8 |
36 | ||
24894b76 LPC |
37 | /** |
38 | * snd_soc_runtime_activate() - Increment active count for PCM runtime components | |
39 | * @rtd: ASoC PCM runtime that is activated | |
40 | * @stream: Direction of the PCM stream | |
41 | * | |
42 | * Increments the active count for all the DAIs and components attached to a PCM | |
43 | * runtime. Should typically be called when a stream is opened. | |
44 | * | |
45 | * Must be called with the rtd->pcm_mutex being held | |
46 | */ | |
47 | void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream) | |
48 | { | |
49 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 50 | int i; |
24894b76 LPC |
51 | |
52 | lockdep_assert_held(&rtd->pcm_mutex); | |
53 | ||
54 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
55 | cpu_dai->playback_active++; | |
2e5894d7 BC |
56 | for (i = 0; i < rtd->num_codecs; i++) |
57 | rtd->codec_dais[i]->playback_active++; | |
24894b76 LPC |
58 | } else { |
59 | cpu_dai->capture_active++; | |
2e5894d7 BC |
60 | for (i = 0; i < rtd->num_codecs; i++) |
61 | rtd->codec_dais[i]->capture_active++; | |
24894b76 LPC |
62 | } |
63 | ||
64 | cpu_dai->active++; | |
cdde4ccb | 65 | cpu_dai->component->active++; |
2e5894d7 BC |
66 | for (i = 0; i < rtd->num_codecs; i++) { |
67 | rtd->codec_dais[i]->active++; | |
68 | rtd->codec_dais[i]->component->active++; | |
69 | } | |
24894b76 LPC |
70 | } |
71 | ||
72 | /** | |
73 | * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components | |
74 | * @rtd: ASoC PCM runtime that is deactivated | |
75 | * @stream: Direction of the PCM stream | |
76 | * | |
77 | * Decrements the active count for all the DAIs and components attached to a PCM | |
78 | * runtime. Should typically be called when a stream is closed. | |
79 | * | |
80 | * Must be called with the rtd->pcm_mutex being held | |
81 | */ | |
82 | void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream) | |
83 | { | |
84 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 85 | int i; |
24894b76 LPC |
86 | |
87 | lockdep_assert_held(&rtd->pcm_mutex); | |
88 | ||
89 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
90 | cpu_dai->playback_active--; | |
2e5894d7 BC |
91 | for (i = 0; i < rtd->num_codecs; i++) |
92 | rtd->codec_dais[i]->playback_active--; | |
24894b76 LPC |
93 | } else { |
94 | cpu_dai->capture_active--; | |
2e5894d7 BC |
95 | for (i = 0; i < rtd->num_codecs; i++) |
96 | rtd->codec_dais[i]->capture_active--; | |
24894b76 LPC |
97 | } |
98 | ||
99 | cpu_dai->active--; | |
cdde4ccb | 100 | cpu_dai->component->active--; |
2e5894d7 BC |
101 | for (i = 0; i < rtd->num_codecs; i++) { |
102 | rtd->codec_dais[i]->component->active--; | |
103 | rtd->codec_dais[i]->active--; | |
104 | } | |
24894b76 LPC |
105 | } |
106 | ||
208a1589 LPC |
107 | /** |
108 | * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay | |
109 | * @rtd: The ASoC PCM runtime that should be checked. | |
110 | * | |
111 | * This function checks whether the power down delay should be ignored for a | |
112 | * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has | |
113 | * been configured to ignore the delay, or if none of the components benefits | |
114 | * from having the delay. | |
115 | */ | |
116 | bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) | |
117 | { | |
2e5894d7 BC |
118 | int i; |
119 | bool ignore = true; | |
120 | ||
208a1589 LPC |
121 | if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) |
122 | return true; | |
123 | ||
2e5894d7 BC |
124 | for (i = 0; i < rtd->num_codecs; i++) |
125 | ignore &= rtd->codec_dais[i]->component->ignore_pmdown_time; | |
126 | ||
127 | return rtd->cpu_dai->component->ignore_pmdown_time && ignore; | |
208a1589 LPC |
128 | } |
129 | ||
90996f43 LPC |
130 | /** |
131 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
132 | * @substream: the pcm substream | |
133 | * @hw: the hardware parameters | |
134 | * | |
135 | * Sets the substream runtime hardware parameters. | |
136 | */ | |
137 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
138 | const struct snd_pcm_hardware *hw) | |
139 | { | |
140 | struct snd_pcm_runtime *runtime = substream->runtime; | |
141 | runtime->hw.info = hw->info; | |
142 | runtime->hw.formats = hw->formats; | |
143 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
144 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
145 | runtime->hw.periods_min = hw->periods_min; | |
146 | runtime->hw.periods_max = hw->periods_max; | |
147 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
148 | runtime->hw.fifo_size = hw->fifo_size; | |
149 | return 0; | |
150 | } | |
151 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
152 | ||
01d7584c | 153 | /* DPCM stream event, send event to FE and all active BEs. */ |
23607025 | 154 | int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, |
01d7584c LG |
155 | int event) |
156 | { | |
157 | struct snd_soc_dpcm *dpcm; | |
158 | ||
159 | list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) { | |
160 | ||
161 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
162 | ||
103d84a3 | 163 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
164 | be->dai_link->name, event, dir); |
165 | ||
166 | snd_soc_dapm_stream_event(be, dir, event); | |
167 | } | |
168 | ||
169 | snd_soc_dapm_stream_event(fe, dir, event); | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
17841020 DA |
174 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
175 | struct snd_soc_dai *soc_dai) | |
ddee627c LG |
176 | { |
177 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
ddee627c LG |
178 | int ret; |
179 | ||
3635bf09 NC |
180 | if (soc_dai->rate && (soc_dai->driver->symmetric_rates || |
181 | rtd->dai_link->symmetric_rates)) { | |
182 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", | |
183 | soc_dai->rate); | |
184 | ||
185 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, | |
186 | SNDRV_PCM_HW_PARAM_RATE, | |
187 | soc_dai->rate, soc_dai->rate); | |
188 | if (ret < 0) { | |
189 | dev_err(soc_dai->dev, | |
190 | "ASoC: Unable to apply rate constraint: %d\n", | |
191 | ret); | |
192 | return ret; | |
193 | } | |
194 | } | |
ddee627c | 195 | |
3635bf09 NC |
196 | if (soc_dai->channels && (soc_dai->driver->symmetric_channels || |
197 | rtd->dai_link->symmetric_channels)) { | |
198 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n", | |
199 | soc_dai->channels); | |
ddee627c | 200 | |
3635bf09 NC |
201 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, |
202 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
203 | soc_dai->channels, | |
204 | soc_dai->channels); | |
205 | if (ret < 0) { | |
206 | dev_err(soc_dai->dev, | |
207 | "ASoC: Unable to apply channel symmetry constraint: %d\n", | |
208 | ret); | |
209 | return ret; | |
210 | } | |
ddee627c LG |
211 | } |
212 | ||
3635bf09 NC |
213 | if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits || |
214 | rtd->dai_link->symmetric_samplebits)) { | |
215 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n", | |
216 | soc_dai->sample_bits); | |
ddee627c | 217 | |
3635bf09 NC |
218 | ret = snd_pcm_hw_constraint_minmax(substream->runtime, |
219 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
220 | soc_dai->sample_bits, | |
221 | soc_dai->sample_bits); | |
222 | if (ret < 0) { | |
223 | dev_err(soc_dai->dev, | |
224 | "ASoC: Unable to apply sample bits symmetry constraint: %d\n", | |
225 | ret); | |
226 | return ret; | |
227 | } | |
ddee627c LG |
228 | } |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
3635bf09 NC |
233 | static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, |
234 | struct snd_pcm_hw_params *params) | |
235 | { | |
236 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
237 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 238 | unsigned int rate, channels, sample_bits, symmetry, i; |
3635bf09 NC |
239 | |
240 | rate = params_rate(params); | |
241 | channels = params_channels(params); | |
242 | sample_bits = snd_pcm_format_physical_width(params_format(params)); | |
243 | ||
244 | /* reject unmatched parameters when applying symmetry */ | |
245 | symmetry = cpu_dai->driver->symmetric_rates || | |
3635bf09 | 246 | rtd->dai_link->symmetric_rates; |
2e5894d7 BC |
247 | |
248 | for (i = 0; i < rtd->num_codecs; i++) | |
249 | symmetry |= rtd->codec_dais[i]->driver->symmetric_rates; | |
250 | ||
3635bf09 NC |
251 | if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) { |
252 | dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", | |
253 | cpu_dai->rate, rate); | |
254 | return -EINVAL; | |
ddee627c LG |
255 | } |
256 | ||
3635bf09 | 257 | symmetry = cpu_dai->driver->symmetric_channels || |
3635bf09 | 258 | rtd->dai_link->symmetric_channels; |
2e5894d7 BC |
259 | |
260 | for (i = 0; i < rtd->num_codecs; i++) | |
261 | symmetry |= rtd->codec_dais[i]->driver->symmetric_channels; | |
262 | ||
3635bf09 NC |
263 | if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) { |
264 | dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", | |
265 | cpu_dai->channels, channels); | |
266 | return -EINVAL; | |
267 | } | |
ddee627c | 268 | |
3635bf09 | 269 | symmetry = cpu_dai->driver->symmetric_samplebits || |
3635bf09 | 270 | rtd->dai_link->symmetric_samplebits; |
2e5894d7 BC |
271 | |
272 | for (i = 0; i < rtd->num_codecs; i++) | |
273 | symmetry |= rtd->codec_dais[i]->driver->symmetric_samplebits; | |
274 | ||
3635bf09 NC |
275 | if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) { |
276 | dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", | |
277 | cpu_dai->sample_bits, sample_bits); | |
278 | return -EINVAL; | |
ddee627c LG |
279 | } |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
62e5f676 LPC |
284 | static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) |
285 | { | |
286 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
287 | struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver; | |
62e5f676 | 288 | struct snd_soc_dai_link *link = rtd->dai_link; |
2e5894d7 | 289 | unsigned int symmetry, i; |
62e5f676 | 290 | |
2e5894d7 BC |
291 | symmetry = cpu_driver->symmetric_rates || link->symmetric_rates || |
292 | cpu_driver->symmetric_channels || link->symmetric_channels || | |
293 | cpu_driver->symmetric_samplebits || link->symmetric_samplebits; | |
62e5f676 | 294 | |
2e5894d7 BC |
295 | for (i = 0; i < rtd->num_codecs; i++) |
296 | symmetry = symmetry || | |
297 | rtd->codec_dais[i]->driver->symmetric_rates || | |
298 | rtd->codec_dais[i]->driver->symmetric_channels || | |
299 | rtd->codec_dais[i]->driver->symmetric_samplebits; | |
300 | ||
301 | return symmetry; | |
62e5f676 LPC |
302 | } |
303 | ||
58ba9b25 MB |
304 | /* |
305 | * List of sample sizes that might go over the bus for parameter | |
306 | * application. There ought to be a wildcard sample size for things | |
307 | * like the DAC/ADC resolution to use but there isn't right now. | |
308 | */ | |
309 | static int sample_sizes[] = { | |
88e33954 | 310 | 24, 32, |
58ba9b25 MB |
311 | }; |
312 | ||
2e5894d7 | 313 | static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) |
58ba9b25 | 314 | { |
2e5894d7 | 315 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
c8dd1fec | 316 | int ret, i; |
58ba9b25 MB |
317 | |
318 | if (!bits) | |
319 | return; | |
320 | ||
321 | for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { | |
278047fd MB |
322 | if (bits >= sample_sizes[i]) |
323 | continue; | |
324 | ||
325 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, | |
326 | sample_sizes[i], bits); | |
58ba9b25 | 327 | if (ret != 0) |
2e5894d7 | 328 | dev_warn(rtd->dev, |
103d84a3 | 329 | "ASoC: Failed to set MSB %d/%d: %d\n", |
58ba9b25 MB |
330 | bits, sample_sizes[i], ret); |
331 | } | |
332 | } | |
333 | ||
c8dd1fec BC |
334 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) |
335 | { | |
336 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
337 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
338 | struct snd_soc_dai *codec_dai; |
339 | int i; | |
c8dd1fec BC |
340 | unsigned int bits = 0, cpu_bits; |
341 | ||
342 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2e5894d7 BC |
343 | for (i = 0; i < rtd->num_codecs; i++) { |
344 | codec_dai = rtd->codec_dais[i]; | |
345 | if (codec_dai->driver->playback.sig_bits == 0) { | |
346 | bits = 0; | |
347 | break; | |
348 | } | |
349 | bits = max(codec_dai->driver->playback.sig_bits, bits); | |
350 | } | |
c8dd1fec BC |
351 | cpu_bits = cpu_dai->driver->playback.sig_bits; |
352 | } else { | |
2e5894d7 BC |
353 | for (i = 0; i < rtd->num_codecs; i++) { |
354 | codec_dai = rtd->codec_dais[i]; | |
5e63dfcc | 355 | if (codec_dai->driver->capture.sig_bits == 0) { |
2e5894d7 BC |
356 | bits = 0; |
357 | break; | |
358 | } | |
359 | bits = max(codec_dai->driver->capture.sig_bits, bits); | |
360 | } | |
c8dd1fec BC |
361 | cpu_bits = cpu_dai->driver->capture.sig_bits; |
362 | } | |
363 | ||
2e5894d7 BC |
364 | soc_pcm_set_msb(substream, bits); |
365 | soc_pcm_set_msb(substream, cpu_bits); | |
c8dd1fec BC |
366 | } |
367 | ||
2e5894d7 | 368 | static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) |
bd477c31 | 369 | { |
2e5894d7 | 370 | struct snd_pcm_runtime *runtime = substream->runtime; |
78e45c99 | 371 | struct snd_pcm_hardware *hw = &runtime->hw; |
2e5894d7 BC |
372 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
373 | struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver; | |
374 | struct snd_soc_dai_driver *codec_dai_drv; | |
375 | struct snd_soc_pcm_stream *codec_stream; | |
376 | struct snd_soc_pcm_stream *cpu_stream; | |
377 | unsigned int chan_min = 0, chan_max = UINT_MAX; | |
378 | unsigned int rate_min = 0, rate_max = UINT_MAX; | |
379 | unsigned int rates = UINT_MAX; | |
380 | u64 formats = ULLONG_MAX; | |
381 | int i; | |
78e45c99 | 382 | |
2e5894d7 BC |
383 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
384 | cpu_stream = &cpu_dai_drv->playback; | |
16d7ea91 | 385 | else |
2e5894d7 | 386 | cpu_stream = &cpu_dai_drv->capture; |
78e45c99 | 387 | |
2e5894d7 BC |
388 | /* first calculate min/max only for CODECs in the DAI link */ |
389 | for (i = 0; i < rtd->num_codecs; i++) { | |
390 | codec_dai_drv = rtd->codec_dais[i]->driver; | |
391 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
392 | codec_stream = &codec_dai_drv->playback; | |
393 | else | |
394 | codec_stream = &codec_dai_drv->capture; | |
395 | chan_min = max(chan_min, codec_stream->channels_min); | |
396 | chan_max = min(chan_max, codec_stream->channels_max); | |
397 | rate_min = max(rate_min, codec_stream->rate_min); | |
398 | rate_max = min_not_zero(rate_max, codec_stream->rate_max); | |
399 | formats &= codec_stream->formats; | |
400 | rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates); | |
401 | } | |
402 | ||
403 | /* | |
404 | * chan min/max cannot be enforced if there are multiple CODEC DAIs | |
405 | * connected to a single CPU DAI, use CPU DAI's directly and let | |
406 | * channel allocation be fixed up later | |
407 | */ | |
408 | if (rtd->num_codecs > 1) { | |
409 | chan_min = cpu_stream->channels_min; | |
410 | chan_max = cpu_stream->channels_max; | |
411 | } | |
412 | ||
413 | hw->channels_min = max(chan_min, cpu_stream->channels_min); | |
414 | hw->channels_max = min(chan_max, cpu_stream->channels_max); | |
415 | if (hw->formats) | |
416 | hw->formats &= formats & cpu_stream->formats; | |
417 | else | |
418 | hw->formats = formats & cpu_stream->formats; | |
419 | hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates); | |
78e45c99 LPC |
420 | |
421 | snd_pcm_limit_hw_rates(runtime); | |
422 | ||
423 | hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); | |
2e5894d7 | 424 | hw->rate_min = max(hw->rate_min, rate_min); |
78e45c99 | 425 | hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); |
2e5894d7 | 426 | hw->rate_max = min_not_zero(hw->rate_max, rate_max); |
bd477c31 LPC |
427 | } |
428 | ||
ddee627c LG |
429 | /* |
430 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
431 | * then initialized and any private data can be allocated. This also calls | |
432 | * startup for the cpu DAI, platform, machine and codec DAI. | |
433 | */ | |
434 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
435 | { | |
436 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
437 | struct snd_pcm_runtime *runtime = substream->runtime; | |
438 | struct snd_soc_platform *platform = rtd->platform; | |
439 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
440 | struct snd_soc_dai *codec_dai; |
441 | const char *codec_dai_name = "multicodec"; | |
442 | int i, ret = 0; | |
ddee627c | 443 | |
988e8cc4 | 444 | pinctrl_pm_select_default_state(cpu_dai->dev); |
2e5894d7 BC |
445 | for (i = 0; i < rtd->num_codecs; i++) |
446 | pinctrl_pm_select_default_state(rtd->codec_dais[i]->dev); | |
d6652ef8 | 447 | pm_runtime_get_sync(cpu_dai->dev); |
2e5894d7 BC |
448 | for (i = 0; i < rtd->num_codecs; i++) |
449 | pm_runtime_get_sync(rtd->codec_dais[i]->dev); | |
d6652ef8 MB |
450 | pm_runtime_get_sync(platform->dev); |
451 | ||
b8c0dab9 | 452 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
453 | |
454 | /* startup the audio subsystem */ | |
c5914b0a | 455 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->startup) { |
ddee627c LG |
456 | ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
457 | if (ret < 0) { | |
103d84a3 LG |
458 | dev_err(cpu_dai->dev, "ASoC: can't open interface" |
459 | " %s: %d\n", cpu_dai->name, ret); | |
ddee627c LG |
460 | goto out; |
461 | } | |
462 | } | |
463 | ||
464 | if (platform->driver->ops && platform->driver->ops->open) { | |
465 | ret = platform->driver->ops->open(substream); | |
466 | if (ret < 0) { | |
103d84a3 | 467 | dev_err(platform->dev, "ASoC: can't open platform" |
f4333203 | 468 | " %s: %d\n", platform->component.name, ret); |
ddee627c LG |
469 | goto platform_err; |
470 | } | |
471 | } | |
472 | ||
2e5894d7 BC |
473 | for (i = 0; i < rtd->num_codecs; i++) { |
474 | codec_dai = rtd->codec_dais[i]; | |
475 | if (codec_dai->driver->ops && codec_dai->driver->ops->startup) { | |
476 | ret = codec_dai->driver->ops->startup(substream, | |
477 | codec_dai); | |
478 | if (ret < 0) { | |
479 | dev_err(codec_dai->dev, | |
480 | "ASoC: can't open codec %s: %d\n", | |
481 | codec_dai->name, ret); | |
482 | goto codec_dai_err; | |
483 | } | |
ddee627c | 484 | } |
2e5894d7 BC |
485 | |
486 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
487 | codec_dai->tx_mask = 0; | |
488 | else | |
489 | codec_dai->rx_mask = 0; | |
ddee627c LG |
490 | } |
491 | ||
492 | if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { | |
493 | ret = rtd->dai_link->ops->startup(substream); | |
494 | if (ret < 0) { | |
103d84a3 | 495 | pr_err("ASoC: %s startup failed: %d\n", |
25bfe662 | 496 | rtd->dai_link->name, ret); |
ddee627c LG |
497 | goto machine_err; |
498 | } | |
499 | } | |
500 | ||
01d7584c LG |
501 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
502 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
503 | goto dynamic; | |
504 | ||
ddee627c | 505 | /* Check that the codec and cpu DAIs are compatible */ |
2e5894d7 BC |
506 | soc_pcm_init_runtime_hw(substream); |
507 | ||
508 | if (rtd->num_codecs == 1) | |
509 | codec_dai_name = rtd->codec_dai->name; | |
ddee627c | 510 | |
62e5f676 LPC |
511 | if (soc_pcm_has_symmetry(substream)) |
512 | runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; | |
513 | ||
ddee627c | 514 | ret = -EINVAL; |
ddee627c | 515 | if (!runtime->hw.rates) { |
103d84a3 | 516 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
2e5894d7 | 517 | codec_dai_name, cpu_dai->name); |
ddee627c LG |
518 | goto config_err; |
519 | } | |
520 | if (!runtime->hw.formats) { | |
103d84a3 | 521 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
2e5894d7 | 522 | codec_dai_name, cpu_dai->name); |
ddee627c LG |
523 | goto config_err; |
524 | } | |
525 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || | |
526 | runtime->hw.channels_min > runtime->hw.channels_max) { | |
103d84a3 | 527 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
2e5894d7 | 528 | codec_dai_name, cpu_dai->name); |
ddee627c LG |
529 | goto config_err; |
530 | } | |
531 | ||
c8dd1fec | 532 | soc_pcm_apply_msb(substream); |
58ba9b25 | 533 | |
ddee627c | 534 | /* Symmetry only applies if we've already got an active stream. */ |
17841020 DA |
535 | if (cpu_dai->active) { |
536 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); | |
537 | if (ret != 0) | |
538 | goto config_err; | |
539 | } | |
540 | ||
2e5894d7 BC |
541 | for (i = 0; i < rtd->num_codecs; i++) { |
542 | if (rtd->codec_dais[i]->active) { | |
543 | ret = soc_pcm_apply_symmetry(substream, | |
544 | rtd->codec_dais[i]); | |
545 | if (ret != 0) | |
546 | goto config_err; | |
547 | } | |
ddee627c LG |
548 | } |
549 | ||
103d84a3 | 550 | pr_debug("ASoC: %s <-> %s info:\n", |
2e5894d7 | 551 | codec_dai_name, cpu_dai->name); |
103d84a3 LG |
552 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
553 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, | |
ddee627c | 554 | runtime->hw.channels_max); |
103d84a3 | 555 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
ddee627c LG |
556 | runtime->hw.rate_max); |
557 | ||
01d7584c | 558 | dynamic: |
24894b76 LPC |
559 | |
560 | snd_soc_runtime_activate(rtd, substream->stream); | |
561 | ||
b8c0dab9 | 562 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
563 | return 0; |
564 | ||
565 | config_err: | |
566 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
567 | rtd->dai_link->ops->shutdown(substream); | |
568 | ||
569 | machine_err: | |
2e5894d7 | 570 | i = rtd->num_codecs; |
ddee627c LG |
571 | |
572 | codec_dai_err: | |
2e5894d7 BC |
573 | while (--i >= 0) { |
574 | codec_dai = rtd->codec_dais[i]; | |
575 | if (codec_dai->driver->ops->shutdown) | |
576 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
577 | } | |
578 | ||
ddee627c LG |
579 | if (platform->driver->ops && platform->driver->ops->close) |
580 | platform->driver->ops->close(substream); | |
581 | ||
582 | platform_err: | |
583 | if (cpu_dai->driver->ops->shutdown) | |
584 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
585 | out: | |
b8c0dab9 | 586 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
587 | |
588 | pm_runtime_put(platform->dev); | |
2e5894d7 BC |
589 | for (i = 0; i < rtd->num_codecs; i++) |
590 | pm_runtime_put(rtd->codec_dais[i]->dev); | |
d6652ef8 | 591 | pm_runtime_put(cpu_dai->dev); |
2e5894d7 BC |
592 | for (i = 0; i < rtd->num_codecs; i++) { |
593 | if (!rtd->codec_dais[i]->active) | |
594 | pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev); | |
595 | } | |
988e8cc4 NC |
596 | if (!cpu_dai->active) |
597 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 598 | |
ddee627c LG |
599 | return ret; |
600 | } | |
601 | ||
602 | /* | |
603 | * Power down the audio subsystem pmdown_time msecs after close is called. | |
604 | * This is to ensure there are no pops or clicks in between any music tracks | |
605 | * due to DAPM power cycling. | |
606 | */ | |
607 | static void close_delayed_work(struct work_struct *work) | |
608 | { | |
609 | struct snd_soc_pcm_runtime *rtd = | |
610 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); | |
2e5894d7 | 611 | struct snd_soc_dai *codec_dai = rtd->codec_dais[0]; |
ddee627c | 612 | |
b8c0dab9 | 613 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 614 | |
103d84a3 | 615 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
ddee627c LG |
616 | codec_dai->driver->playback.stream_name, |
617 | codec_dai->playback_active ? "active" : "inactive", | |
9bffb1fb | 618 | rtd->pop_wait ? "yes" : "no"); |
ddee627c LG |
619 | |
620 | /* are we waiting on this codec DAI stream */ | |
9bffb1fb MLC |
621 | if (rtd->pop_wait == 1) { |
622 | rtd->pop_wait = 0; | |
7bd3a6f3 | 623 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
d9b0951b | 624 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
625 | } |
626 | ||
b8c0dab9 | 627 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
628 | } |
629 | ||
630 | /* | |
631 | * Called by ALSA when a PCM substream is closed. Private data can be | |
632 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
633 | * shutdown. | |
634 | */ | |
91d5e6b4 | 635 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
ddee627c LG |
636 | { |
637 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
638 | struct snd_soc_platform *platform = rtd->platform; | |
639 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
640 | struct snd_soc_dai *codec_dai; |
641 | int i; | |
ddee627c | 642 | |
b8c0dab9 | 643 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 644 | |
24894b76 | 645 | snd_soc_runtime_deactivate(rtd, substream->stream); |
ddee627c | 646 | |
17841020 DA |
647 | /* clear the corresponding DAIs rate when inactive */ |
648 | if (!cpu_dai->active) | |
649 | cpu_dai->rate = 0; | |
650 | ||
2e5894d7 BC |
651 | for (i = 0; i < rtd->num_codecs; i++) { |
652 | codec_dai = rtd->codec_dais[i]; | |
653 | if (!codec_dai->active) | |
654 | codec_dai->rate = 0; | |
655 | } | |
25b76791 | 656 | |
ddee627c LG |
657 | if (cpu_dai->driver->ops->shutdown) |
658 | cpu_dai->driver->ops->shutdown(substream, cpu_dai); | |
659 | ||
2e5894d7 BC |
660 | for (i = 0; i < rtd->num_codecs; i++) { |
661 | codec_dai = rtd->codec_dais[i]; | |
662 | if (codec_dai->driver->ops->shutdown) | |
663 | codec_dai->driver->ops->shutdown(substream, codec_dai); | |
664 | } | |
ddee627c LG |
665 | |
666 | if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) | |
667 | rtd->dai_link->ops->shutdown(substream); | |
668 | ||
669 | if (platform->driver->ops && platform->driver->ops->close) | |
670 | platform->driver->ops->close(substream); | |
ddee627c LG |
671 | |
672 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
208a1589 | 673 | if (snd_soc_runtime_ignore_pmdown_time(rtd)) { |
1d69c5c5 PU |
674 | /* powered down playback stream now */ |
675 | snd_soc_dapm_stream_event(rtd, | |
7bd3a6f3 | 676 | SNDRV_PCM_STREAM_PLAYBACK, |
7bd3a6f3 | 677 | SND_SOC_DAPM_STREAM_STOP); |
1d69c5c5 PU |
678 | } else { |
679 | /* start delayed pop wq here for playback streams */ | |
9bffb1fb | 680 | rtd->pop_wait = 1; |
d4e1a73a MB |
681 | queue_delayed_work(system_power_efficient_wq, |
682 | &rtd->delayed_work, | |
683 | msecs_to_jiffies(rtd->pmdown_time)); | |
1d69c5c5 | 684 | } |
ddee627c LG |
685 | } else { |
686 | /* capture streams can be powered down now */ | |
7bd3a6f3 | 687 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
d9b0951b | 688 | SND_SOC_DAPM_STREAM_STOP); |
ddee627c LG |
689 | } |
690 | ||
b8c0dab9 | 691 | mutex_unlock(&rtd->pcm_mutex); |
d6652ef8 MB |
692 | |
693 | pm_runtime_put(platform->dev); | |
2e5894d7 BC |
694 | for (i = 0; i < rtd->num_codecs; i++) |
695 | pm_runtime_put(rtd->codec_dais[i]->dev); | |
d6652ef8 | 696 | pm_runtime_put(cpu_dai->dev); |
2e5894d7 BC |
697 | for (i = 0; i < rtd->num_codecs; i++) { |
698 | if (!rtd->codec_dais[i]->active) | |
699 | pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev); | |
700 | } | |
988e8cc4 NC |
701 | if (!cpu_dai->active) |
702 | pinctrl_pm_select_sleep_state(cpu_dai->dev); | |
d6652ef8 | 703 | |
ddee627c LG |
704 | return 0; |
705 | } | |
706 | ||
707 | /* | |
708 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
709 | * rate, etc. This function is non atomic and can be called multiple times, | |
710 | * it can refer to the runtime info. | |
711 | */ | |
712 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
713 | { | |
714 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
715 | struct snd_soc_platform *platform = rtd->platform; | |
716 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
717 | struct snd_soc_dai *codec_dai; |
718 | int i, ret = 0; | |
ddee627c | 719 | |
b8c0dab9 | 720 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c LG |
721 | |
722 | if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { | |
723 | ret = rtd->dai_link->ops->prepare(substream); | |
724 | if (ret < 0) { | |
103d84a3 LG |
725 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
726 | " %d\n", ret); | |
ddee627c LG |
727 | goto out; |
728 | } | |
729 | } | |
730 | ||
731 | if (platform->driver->ops && platform->driver->ops->prepare) { | |
732 | ret = platform->driver->ops->prepare(substream); | |
733 | if (ret < 0) { | |
103d84a3 LG |
734 | dev_err(platform->dev, "ASoC: platform prepare error:" |
735 | " %d\n", ret); | |
ddee627c LG |
736 | goto out; |
737 | } | |
738 | } | |
739 | ||
2e5894d7 BC |
740 | for (i = 0; i < rtd->num_codecs; i++) { |
741 | codec_dai = rtd->codec_dais[i]; | |
742 | if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) { | |
743 | ret = codec_dai->driver->ops->prepare(substream, | |
744 | codec_dai); | |
745 | if (ret < 0) { | |
746 | dev_err(codec_dai->dev, | |
747 | "ASoC: DAI prepare error: %d\n", ret); | |
748 | goto out; | |
749 | } | |
ddee627c LG |
750 | } |
751 | } | |
752 | ||
c5914b0a | 753 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->prepare) { |
ddee627c LG |
754 | ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
755 | if (ret < 0) { | |
103d84a3 | 756 | dev_err(cpu_dai->dev, "ASoC: DAI prepare error: %d\n", |
25bfe662 | 757 | ret); |
ddee627c LG |
758 | goto out; |
759 | } | |
760 | } | |
761 | ||
762 | /* cancel any delayed stream shutdown that is pending */ | |
763 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
764 | rtd->pop_wait) { |
765 | rtd->pop_wait = 0; | |
ddee627c LG |
766 | cancel_delayed_work(&rtd->delayed_work); |
767 | } | |
768 | ||
d9b0951b LG |
769 | snd_soc_dapm_stream_event(rtd, substream->stream, |
770 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 771 | |
2e5894d7 BC |
772 | for (i = 0; i < rtd->num_codecs; i++) |
773 | snd_soc_dai_digital_mute(rtd->codec_dais[i], 0, | |
774 | substream->stream); | |
ddee627c LG |
775 | |
776 | out: | |
b8c0dab9 | 777 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
778 | return ret; |
779 | } | |
780 | ||
2e5894d7 BC |
781 | static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, |
782 | unsigned int mask) | |
783 | { | |
784 | struct snd_interval *interval; | |
785 | int channels = hweight_long(mask); | |
786 | ||
787 | interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
788 | interval->min = channels; | |
789 | interval->max = channels; | |
790 | } | |
791 | ||
93e6958a BC |
792 | int soc_dai_hw_params(struct snd_pcm_substream *substream, |
793 | struct snd_pcm_hw_params *params, | |
794 | struct snd_soc_dai *dai) | |
795 | { | |
796 | int ret; | |
797 | ||
798 | if (dai->driver->ops && dai->driver->ops->hw_params) { | |
799 | ret = dai->driver->ops->hw_params(substream, params, dai); | |
800 | if (ret < 0) { | |
801 | dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n", | |
802 | dai->name, ret); | |
803 | return ret; | |
804 | } | |
805 | } | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
ddee627c LG |
810 | /* |
811 | * Called by ALSA when the hardware params are set by application. This | |
812 | * function can also be called multiple times and can allocate buffers | |
813 | * (using snd_pcm_lib_* ). It's non-atomic. | |
814 | */ | |
815 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
816 | struct snd_pcm_hw_params *params) | |
817 | { | |
818 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
819 | struct snd_soc_platform *platform = rtd->platform; | |
820 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 821 | int i, ret = 0; |
ddee627c | 822 | |
b8c0dab9 | 823 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 824 | |
3635bf09 NC |
825 | ret = soc_pcm_params_symmetry(substream, params); |
826 | if (ret) | |
827 | goto out; | |
828 | ||
ddee627c LG |
829 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { |
830 | ret = rtd->dai_link->ops->hw_params(substream, params); | |
831 | if (ret < 0) { | |
103d84a3 LG |
832 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
833 | " failed: %d\n", ret); | |
ddee627c LG |
834 | goto out; |
835 | } | |
836 | } | |
837 | ||
2e5894d7 BC |
838 | for (i = 0; i < rtd->num_codecs; i++) { |
839 | struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; | |
840 | struct snd_pcm_hw_params codec_params; | |
841 | ||
842 | /* copy params for each codec */ | |
843 | codec_params = *params; | |
844 | ||
845 | /* fixup params based on TDM slot masks */ | |
846 | if (codec_dai->tx_mask) | |
847 | soc_pcm_codec_params_fixup(&codec_params, | |
848 | codec_dai->tx_mask); | |
849 | if (codec_dai->rx_mask) | |
850 | soc_pcm_codec_params_fixup(&codec_params, | |
851 | codec_dai->rx_mask); | |
852 | ||
93e6958a BC |
853 | ret = soc_dai_hw_params(substream, &codec_params, codec_dai); |
854 | if(ret < 0) | |
ddee627c | 855 | goto codec_err; |
ddee627c | 856 | |
2e5894d7 BC |
857 | codec_dai->rate = params_rate(&codec_params); |
858 | codec_dai->channels = params_channels(&codec_params); | |
859 | codec_dai->sample_bits = snd_pcm_format_physical_width( | |
860 | params_format(&codec_params)); | |
ddee627c LG |
861 | } |
862 | ||
93e6958a BC |
863 | ret = soc_dai_hw_params(substream, params, cpu_dai); |
864 | if (ret < 0) | |
865 | goto interface_err; | |
ddee627c LG |
866 | |
867 | if (platform->driver->ops && platform->driver->ops->hw_params) { | |
868 | ret = platform->driver->ops->hw_params(substream, params); | |
869 | if (ret < 0) { | |
103d84a3 | 870 | dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", |
f4333203 | 871 | platform->component.name, ret); |
ddee627c LG |
872 | goto platform_err; |
873 | } | |
874 | } | |
875 | ||
3635bf09 | 876 | /* store the parameters for each DAIs */ |
17841020 | 877 | cpu_dai->rate = params_rate(params); |
3635bf09 NC |
878 | cpu_dai->channels = params_channels(params); |
879 | cpu_dai->sample_bits = | |
880 | snd_pcm_format_physical_width(params_format(params)); | |
881 | ||
ddee627c | 882 | out: |
b8c0dab9 | 883 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
884 | return ret; |
885 | ||
886 | platform_err: | |
c5914b0a | 887 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
888 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
889 | ||
890 | interface_err: | |
2e5894d7 | 891 | i = rtd->num_codecs; |
ddee627c LG |
892 | |
893 | codec_err: | |
2e5894d7 BC |
894 | while (--i >= 0) { |
895 | struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; | |
896 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) | |
897 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
898 | codec_dai->rate = 0; | |
899 | } | |
900 | ||
ddee627c LG |
901 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) |
902 | rtd->dai_link->ops->hw_free(substream); | |
903 | ||
b8c0dab9 | 904 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
905 | return ret; |
906 | } | |
907 | ||
908 | /* | |
909 | * Frees resources allocated by hw_params, can be called multiple times | |
910 | */ | |
911 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
912 | { | |
913 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
914 | struct snd_soc_platform *platform = rtd->platform; | |
915 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 916 | struct snd_soc_dai *codec_dai; |
7f62b6ee | 917 | bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
2e5894d7 | 918 | int i; |
ddee627c | 919 | |
b8c0dab9 | 920 | mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
ddee627c | 921 | |
d3383420 NC |
922 | /* clear the corresponding DAIs parameters when going to be inactive */ |
923 | if (cpu_dai->active == 1) { | |
924 | cpu_dai->rate = 0; | |
925 | cpu_dai->channels = 0; | |
926 | cpu_dai->sample_bits = 0; | |
927 | } | |
928 | ||
2e5894d7 BC |
929 | for (i = 0; i < rtd->num_codecs; i++) { |
930 | codec_dai = rtd->codec_dais[i]; | |
931 | if (codec_dai->active == 1) { | |
932 | codec_dai->rate = 0; | |
933 | codec_dai->channels = 0; | |
934 | codec_dai->sample_bits = 0; | |
935 | } | |
d3383420 NC |
936 | } |
937 | ||
ddee627c | 938 | /* apply codec digital mute */ |
2e5894d7 BC |
939 | for (i = 0; i < rtd->num_codecs; i++) { |
940 | if ((playback && rtd->codec_dais[i]->playback_active == 1) || | |
941 | (!playback && rtd->codec_dais[i]->capture_active == 1)) | |
942 | snd_soc_dai_digital_mute(rtd->codec_dais[i], 1, | |
943 | substream->stream); | |
944 | } | |
ddee627c LG |
945 | |
946 | /* free any machine hw params */ | |
947 | if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) | |
948 | rtd->dai_link->ops->hw_free(substream); | |
949 | ||
950 | /* free any DMA resources */ | |
951 | if (platform->driver->ops && platform->driver->ops->hw_free) | |
952 | platform->driver->ops->hw_free(substream); | |
953 | ||
954 | /* now free hw params for the DAIs */ | |
2e5894d7 BC |
955 | for (i = 0; i < rtd->num_codecs; i++) { |
956 | codec_dai = rtd->codec_dais[i]; | |
957 | if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free) | |
958 | codec_dai->driver->ops->hw_free(substream, codec_dai); | |
959 | } | |
ddee627c | 960 | |
c5914b0a | 961 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free) |
ddee627c LG |
962 | cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
963 | ||
b8c0dab9 | 964 | mutex_unlock(&rtd->pcm_mutex); |
ddee627c LG |
965 | return 0; |
966 | } | |
967 | ||
968 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
969 | { | |
970 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
971 | struct snd_soc_platform *platform = rtd->platform; | |
972 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
973 | struct snd_soc_dai *codec_dai; |
974 | int i, ret; | |
975 | ||
976 | for (i = 0; i < rtd->num_codecs; i++) { | |
977 | codec_dai = rtd->codec_dais[i]; | |
978 | if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) { | |
979 | ret = codec_dai->driver->ops->trigger(substream, | |
980 | cmd, codec_dai); | |
981 | if (ret < 0) | |
982 | return ret; | |
983 | } | |
ddee627c LG |
984 | } |
985 | ||
986 | if (platform->driver->ops && platform->driver->ops->trigger) { | |
987 | ret = platform->driver->ops->trigger(substream, cmd); | |
988 | if (ret < 0) | |
989 | return ret; | |
990 | } | |
991 | ||
c5914b0a | 992 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) { |
ddee627c LG |
993 | ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
994 | if (ret < 0) | |
995 | return ret; | |
996 | } | |
4792b0db JN |
997 | |
998 | if (rtd->dai_link->ops && rtd->dai_link->ops->trigger) { | |
999 | ret = rtd->dai_link->ops->trigger(substream, cmd); | |
1000 | if (ret < 0) | |
1001 | return ret; | |
1002 | } | |
1003 | ||
ddee627c LG |
1004 | return 0; |
1005 | } | |
1006 | ||
45c0a188 MB |
1007 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
1008 | int cmd) | |
07bf84aa LG |
1009 | { |
1010 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1011 | struct snd_soc_platform *platform = rtd->platform; | |
1012 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 BC |
1013 | struct snd_soc_dai *codec_dai; |
1014 | int i, ret; | |
1015 | ||
1016 | for (i = 0; i < rtd->num_codecs; i++) { | |
1017 | codec_dai = rtd->codec_dais[i]; | |
1018 | if (codec_dai->driver->ops && | |
1019 | codec_dai->driver->ops->bespoke_trigger) { | |
1020 | ret = codec_dai->driver->ops->bespoke_trigger(substream, | |
1021 | cmd, codec_dai); | |
1022 | if (ret < 0) | |
1023 | return ret; | |
1024 | } | |
07bf84aa LG |
1025 | } |
1026 | ||
dcf0fa27 | 1027 | if (platform->driver->bespoke_trigger) { |
07bf84aa LG |
1028 | ret = platform->driver->bespoke_trigger(substream, cmd); |
1029 | if (ret < 0) | |
1030 | return ret; | |
1031 | } | |
1032 | ||
c5914b0a | 1033 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->bespoke_trigger) { |
07bf84aa LG |
1034 | ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); |
1035 | if (ret < 0) | |
1036 | return ret; | |
1037 | } | |
1038 | return 0; | |
1039 | } | |
ddee627c LG |
1040 | /* |
1041 | * soc level wrapper for pointer callback | |
1042 | * If cpu_dai, codec_dai, platform driver has the delay callback, than | |
1043 | * the runtime->delay will be updated accordingly. | |
1044 | */ | |
1045 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
1046 | { | |
1047 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1048 | struct snd_soc_platform *platform = rtd->platform; | |
1049 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2e5894d7 | 1050 | struct snd_soc_dai *codec_dai; |
ddee627c LG |
1051 | struct snd_pcm_runtime *runtime = substream->runtime; |
1052 | snd_pcm_uframes_t offset = 0; | |
1053 | snd_pcm_sframes_t delay = 0; | |
2e5894d7 BC |
1054 | snd_pcm_sframes_t codec_delay = 0; |
1055 | int i; | |
ddee627c LG |
1056 | |
1057 | if (platform->driver->ops && platform->driver->ops->pointer) | |
1058 | offset = platform->driver->ops->pointer(substream); | |
1059 | ||
c5914b0a | 1060 | if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay) |
ddee627c LG |
1061 | delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
1062 | ||
2e5894d7 BC |
1063 | for (i = 0; i < rtd->num_codecs; i++) { |
1064 | codec_dai = rtd->codec_dais[i]; | |
1065 | if (codec_dai->driver->ops && codec_dai->driver->ops->delay) | |
1066 | codec_delay = max(codec_delay, | |
1067 | codec_dai->driver->ops->delay(substream, | |
1068 | codec_dai)); | |
1069 | } | |
1070 | delay += codec_delay; | |
ddee627c | 1071 | |
2e5894d7 BC |
1072 | /* |
1073 | * None of the existing platform drivers implement delay(), so | |
1074 | * for now the codec_dai of first multicodec entry is used | |
1075 | */ | |
ddee627c | 1076 | if (platform->driver->delay) |
2e5894d7 | 1077 | delay += platform->driver->delay(substream, rtd->codec_dais[0]); |
ddee627c LG |
1078 | |
1079 | runtime->delay = delay; | |
1080 | ||
1081 | return offset; | |
1082 | } | |
1083 | ||
01d7584c LG |
1084 | /* connect a FE and BE */ |
1085 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
1086 | struct snd_soc_pcm_runtime *be, int stream) | |
1087 | { | |
1088 | struct snd_soc_dpcm *dpcm; | |
1089 | ||
1090 | /* only add new dpcms */ | |
1091 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1092 | if (dpcm->be == be && dpcm->fe == fe) | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); | |
1097 | if (!dpcm) | |
1098 | return -ENOMEM; | |
1099 | ||
1100 | dpcm->be = be; | |
1101 | dpcm->fe = fe; | |
1102 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; | |
1103 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; | |
1104 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); | |
1105 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
1106 | ||
7cc302d2 | 1107 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
1108 | stream ? "capture" : "playback", fe->dai_link->name, |
1109 | stream ? "<-" : "->", be->dai_link->name); | |
1110 | ||
f86dcef8 LG |
1111 | #ifdef CONFIG_DEBUG_FS |
1112 | dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, | |
1113 | fe->debugfs_dpcm_root, &dpcm->state); | |
1114 | #endif | |
01d7584c LG |
1115 | return 1; |
1116 | } | |
1117 | ||
1118 | /* reparent a BE onto another FE */ | |
1119 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
1120 | struct snd_soc_pcm_runtime *be, int stream) | |
1121 | { | |
1122 | struct snd_soc_dpcm *dpcm; | |
1123 | struct snd_pcm_substream *fe_substream, *be_substream; | |
1124 | ||
1125 | /* reparent if BE is connected to other FEs */ | |
1126 | if (!be->dpcm[stream].users) | |
1127 | return; | |
1128 | ||
1129 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
1130 | ||
1131 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
1132 | if (dpcm->fe == fe) | |
1133 | continue; | |
1134 | ||
7cc302d2 | 1135 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
1136 | stream ? "capture" : "playback", |
1137 | dpcm->fe->dai_link->name, | |
1138 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
1139 | ||
1140 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
1141 | be_substream->runtime = fe_substream->runtime; | |
1142 | break; | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | /* disconnect a BE and FE */ | |
23607025 | 1147 | void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1148 | { |
1149 | struct snd_soc_dpcm *dpcm, *d; | |
1150 | ||
1151 | list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) { | |
103d84a3 | 1152 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
1153 | stream ? "capture" : "playback", |
1154 | dpcm->be->dai_link->name); | |
1155 | ||
1156 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
1157 | continue; | |
1158 | ||
7cc302d2 | 1159 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
1160 | stream ? "capture" : "playback", fe->dai_link->name, |
1161 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
1162 | ||
1163 | /* BEs still alive need new FE */ | |
1164 | dpcm_be_reparent(fe, dpcm->be, stream); | |
1165 | ||
f86dcef8 LG |
1166 | #ifdef CONFIG_DEBUG_FS |
1167 | debugfs_remove(dpcm->debugfs_state); | |
1168 | #endif | |
01d7584c LG |
1169 | list_del(&dpcm->list_be); |
1170 | list_del(&dpcm->list_fe); | |
1171 | kfree(dpcm); | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | /* get BE for DAI widget and stream */ | |
1176 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
1177 | struct snd_soc_dapm_widget *widget, int stream) | |
1178 | { | |
1179 | struct snd_soc_pcm_runtime *be; | |
2e5894d7 | 1180 | int i, j; |
01d7584c LG |
1181 | |
1182 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1183 | for (i = 0; i < card->num_links; i++) { | |
1184 | be = &card->rtd[i]; | |
1185 | ||
35ea0655 LG |
1186 | if (!be->dai_link->no_pcm) |
1187 | continue; | |
1188 | ||
2e5894d7 | 1189 | if (be->cpu_dai->playback_widget == widget) |
01d7584c | 1190 | return be; |
2e5894d7 BC |
1191 | |
1192 | for (j = 0; j < be->num_codecs; j++) { | |
1193 | struct snd_soc_dai *dai = be->codec_dais[j]; | |
1194 | if (dai->playback_widget == widget) | |
1195 | return be; | |
1196 | } | |
01d7584c LG |
1197 | } |
1198 | } else { | |
1199 | ||
1200 | for (i = 0; i < card->num_links; i++) { | |
1201 | be = &card->rtd[i]; | |
1202 | ||
35ea0655 LG |
1203 | if (!be->dai_link->no_pcm) |
1204 | continue; | |
1205 | ||
2e5894d7 | 1206 | if (be->cpu_dai->capture_widget == widget) |
01d7584c | 1207 | return be; |
2e5894d7 BC |
1208 | |
1209 | for (j = 0; j < be->num_codecs; j++) { | |
1210 | struct snd_soc_dai *dai = be->codec_dais[j]; | |
1211 | if (dai->capture_widget == widget) | |
1212 | return be; | |
1213 | } | |
01d7584c LG |
1214 | } |
1215 | } | |
1216 | ||
103d84a3 | 1217 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
01d7584c LG |
1218 | stream ? "capture" : "playback", widget->name); |
1219 | return NULL; | |
1220 | } | |
1221 | ||
1222 | static inline struct snd_soc_dapm_widget * | |
37018610 | 1223 | dai_get_widget(struct snd_soc_dai *dai, int stream) |
01d7584c LG |
1224 | { |
1225 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
37018610 | 1226 | return dai->playback_widget; |
01d7584c | 1227 | else |
37018610 | 1228 | return dai->capture_widget; |
01d7584c LG |
1229 | } |
1230 | ||
1231 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, | |
1232 | struct snd_soc_dapm_widget *widget) | |
1233 | { | |
1234 | int i; | |
1235 | ||
1236 | for (i = 0; i < list->num_widgets; i++) { | |
1237 | if (widget == list->widgets[i]) | |
1238 | return 1; | |
1239 | } | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
23607025 | 1244 | int dpcm_path_get(struct snd_soc_pcm_runtime *fe, |
01d7584c LG |
1245 | int stream, struct snd_soc_dapm_widget_list **list_) |
1246 | { | |
1247 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; | |
1248 | struct snd_soc_dapm_widget_list *list; | |
1249 | int paths; | |
1250 | ||
1251 | list = kzalloc(sizeof(struct snd_soc_dapm_widget_list) + | |
1252 | sizeof(struct snd_soc_dapm_widget *), GFP_KERNEL); | |
1253 | if (list == NULL) | |
1254 | return -ENOMEM; | |
1255 | ||
1256 | /* get number of valid DAI paths and their widgets */ | |
1257 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, &list); | |
1258 | ||
103d84a3 | 1259 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
01d7584c LG |
1260 | stream ? "capture" : "playback"); |
1261 | ||
1262 | *list_ = list; | |
1263 | return paths; | |
1264 | } | |
1265 | ||
01d7584c LG |
1266 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, |
1267 | struct snd_soc_dapm_widget_list **list_) | |
1268 | { | |
1269 | struct snd_soc_dpcm *dpcm; | |
1270 | struct snd_soc_dapm_widget_list *list = *list_; | |
1271 | struct snd_soc_dapm_widget *widget; | |
1272 | int prune = 0; | |
1273 | ||
1274 | /* Destroy any old FE <--> BE connections */ | |
1275 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2e5894d7 | 1276 | unsigned int i; |
01d7584c LG |
1277 | |
1278 | /* is there a valid CPU DAI widget for this BE */ | |
37018610 | 1279 | widget = dai_get_widget(dpcm->be->cpu_dai, stream); |
01d7584c LG |
1280 | |
1281 | /* prune the BE if it's no longer in our active list */ | |
1282 | if (widget && widget_in_list(list, widget)) | |
1283 | continue; | |
1284 | ||
1285 | /* is there a valid CODEC DAI widget for this BE */ | |
2e5894d7 BC |
1286 | for (i = 0; i < dpcm->be->num_codecs; i++) { |
1287 | struct snd_soc_dai *dai = dpcm->be->codec_dais[i]; | |
1288 | widget = dai_get_widget(dai, stream); | |
01d7584c | 1289 | |
2e5894d7 BC |
1290 | /* prune the BE if it's no longer in our active list */ |
1291 | if (widget && widget_in_list(list, widget)) | |
1292 | continue; | |
1293 | } | |
01d7584c | 1294 | |
103d84a3 | 1295 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
1296 | stream ? "capture" : "playback", |
1297 | dpcm->be->dai_link->name, fe->dai_link->name); | |
1298 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
1299 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1300 | prune++; | |
1301 | } | |
1302 | ||
103d84a3 | 1303 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
1304 | return prune; |
1305 | } | |
1306 | ||
1307 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
1308 | struct snd_soc_dapm_widget_list **list_) | |
1309 | { | |
1310 | struct snd_soc_card *card = fe->card; | |
1311 | struct snd_soc_dapm_widget_list *list = *list_; | |
1312 | struct snd_soc_pcm_runtime *be; | |
1313 | int i, new = 0, err; | |
1314 | ||
1315 | /* Create any new FE <--> BE connections */ | |
1316 | for (i = 0; i < list->num_widgets; i++) { | |
1317 | ||
4616274d MB |
1318 | switch (list->widgets[i]->id) { |
1319 | case snd_soc_dapm_dai_in: | |
1320 | case snd_soc_dapm_dai_out: | |
1321 | break; | |
1322 | default: | |
01d7584c | 1323 | continue; |
4616274d | 1324 | } |
01d7584c LG |
1325 | |
1326 | /* is there a valid BE rtd for this widget */ | |
1327 | be = dpcm_get_be(card, list->widgets[i], stream); | |
1328 | if (!be) { | |
103d84a3 | 1329 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
01d7584c LG |
1330 | list->widgets[i]->name); |
1331 | continue; | |
1332 | } | |
1333 | ||
1334 | /* make sure BE is a real BE */ | |
1335 | if (!be->dai_link->no_pcm) | |
1336 | continue; | |
1337 | ||
1338 | /* don't connect if FE is not running */ | |
23607025 | 1339 | if (!fe->dpcm[stream].runtime && !fe->fe_compr) |
01d7584c LG |
1340 | continue; |
1341 | ||
1342 | /* newly connected FE and BE */ | |
1343 | err = dpcm_be_connect(fe, be, stream); | |
1344 | if (err < 0) { | |
103d84a3 | 1345 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
01d7584c LG |
1346 | list->widgets[i]->name); |
1347 | break; | |
1348 | } else if (err == 0) /* already connected */ | |
1349 | continue; | |
1350 | ||
1351 | /* new */ | |
1352 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
1353 | new++; | |
1354 | } | |
1355 | ||
103d84a3 | 1356 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
1357 | return new; |
1358 | } | |
1359 | ||
1360 | /* | |
1361 | * Find the corresponding BE DAIs that source or sink audio to this | |
1362 | * FE substream. | |
1363 | */ | |
23607025 | 1364 | int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, |
01d7584c LG |
1365 | int stream, struct snd_soc_dapm_widget_list **list, int new) |
1366 | { | |
1367 | if (new) | |
1368 | return dpcm_add_paths(fe, stream, list); | |
1369 | else | |
1370 | return dpcm_prune_paths(fe, stream, list); | |
1371 | } | |
1372 | ||
23607025 | 1373 | void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1374 | { |
1375 | struct snd_soc_dpcm *dpcm; | |
1376 | ||
1377 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
1378 | dpcm->be->dpcm[stream].runtime_update = | |
1379 | SND_SOC_DPCM_UPDATE_NO; | |
1380 | } | |
1381 | ||
1382 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, | |
1383 | int stream) | |
1384 | { | |
1385 | struct snd_soc_dpcm *dpcm; | |
1386 | ||
1387 | /* disable any enabled and non active backends */ | |
1388 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1389 | ||
1390 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1391 | struct snd_pcm_substream *be_substream = | |
1392 | snd_soc_dpcm_get_substream(be, stream); | |
1393 | ||
1394 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1395 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1396 | stream ? "capture" : "playback", |
1397 | be->dpcm[stream].state); | |
1398 | ||
1399 | if (--be->dpcm[stream].users != 0) | |
1400 | continue; | |
1401 | ||
1402 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1403 | continue; | |
1404 | ||
1405 | soc_pcm_close(be_substream); | |
1406 | be_substream->runtime = NULL; | |
1407 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1408 | } | |
1409 | } | |
1410 | ||
23607025 | 1411 | int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1412 | { |
1413 | struct snd_soc_dpcm *dpcm; | |
1414 | int err, count = 0; | |
1415 | ||
1416 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
1417 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1418 | ||
1419 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1420 | struct snd_pcm_substream *be_substream = | |
1421 | snd_soc_dpcm_get_substream(be, stream); | |
1422 | ||
2062b4c5 RKAL |
1423 | if (!be_substream) { |
1424 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1425 | stream ? "capture" : "playback"); | |
1426 | continue; | |
1427 | } | |
1428 | ||
01d7584c LG |
1429 | /* is this op for this BE ? */ |
1430 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1431 | continue; | |
1432 | ||
1433 | /* first time the dpcm is open ? */ | |
1434 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) | |
103d84a3 | 1435 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1436 | stream ? "capture" : "playback", |
1437 | be->dpcm[stream].state); | |
1438 | ||
1439 | if (be->dpcm[stream].users++ != 0) | |
1440 | continue; | |
1441 | ||
1442 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1443 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1444 | continue; | |
1445 | ||
2062b4c5 RKAL |
1446 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1447 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c LG |
1448 | |
1449 | be_substream->runtime = be->dpcm[stream].runtime; | |
1450 | err = soc_pcm_open(be_substream); | |
1451 | if (err < 0) { | |
103d84a3 | 1452 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
01d7584c LG |
1453 | be->dpcm[stream].users--; |
1454 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1455 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1456 | stream ? "capture" : "playback", |
1457 | be->dpcm[stream].state); | |
1458 | ||
1459 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1460 | goto unwind; | |
1461 | } | |
1462 | ||
1463 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1464 | count++; | |
1465 | } | |
1466 | ||
1467 | return count; | |
1468 | ||
1469 | unwind: | |
1470 | /* disable any enabled and non active backends */ | |
1471 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1472 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1473 | struct snd_pcm_substream *be_substream = | |
1474 | snd_soc_dpcm_get_substream(be, stream); | |
1475 | ||
1476 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1477 | continue; | |
1478 | ||
1479 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1480 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
01d7584c LG |
1481 | stream ? "capture" : "playback", |
1482 | be->dpcm[stream].state); | |
1483 | ||
1484 | if (--be->dpcm[stream].users != 0) | |
1485 | continue; | |
1486 | ||
1487 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) | |
1488 | continue; | |
1489 | ||
1490 | soc_pcm_close(be_substream); | |
1491 | be_substream->runtime = NULL; | |
1492 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1493 | } | |
1494 | ||
1495 | return err; | |
1496 | } | |
1497 | ||
08ae9b45 LPC |
1498 | static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
1499 | struct snd_soc_pcm_stream *stream) | |
1500 | { | |
1501 | runtime->hw.rate_min = stream->rate_min; | |
1502 | runtime->hw.rate_max = stream->rate_max; | |
1503 | runtime->hw.channels_min = stream->channels_min; | |
1504 | runtime->hw.channels_max = stream->channels_max; | |
002220a9 LPC |
1505 | if (runtime->hw.formats) |
1506 | runtime->hw.formats &= stream->formats; | |
1507 | else | |
1508 | runtime->hw.formats = stream->formats; | |
08ae9b45 LPC |
1509 | runtime->hw.rates = stream->rates; |
1510 | } | |
1511 | ||
45c0a188 | 1512 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
01d7584c LG |
1513 | { |
1514 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1515 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1516 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
1517 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; | |
1518 | ||
08ae9b45 LPC |
1519 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
1520 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback); | |
1521 | else | |
1522 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture); | |
01d7584c LG |
1523 | } |
1524 | ||
1525 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) | |
1526 | { | |
1527 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
1528 | struct snd_pcm_runtime *runtime = fe_substream->runtime; | |
1529 | int stream = fe_substream->stream, ret = 0; | |
1530 | ||
1531 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1532 | ||
1533 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); | |
1534 | if (ret < 0) { | |
103d84a3 | 1535 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
01d7584c LG |
1536 | goto be_err; |
1537 | } | |
1538 | ||
103d84a3 | 1539 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1540 | |
1541 | /* start the DAI frontend */ | |
1542 | ret = soc_pcm_open(fe_substream); | |
1543 | if (ret < 0) { | |
103d84a3 | 1544 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
01d7584c LG |
1545 | goto unwind; |
1546 | } | |
1547 | ||
1548 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1549 | ||
1550 | dpcm_set_fe_runtime(fe_substream); | |
1551 | snd_pcm_limit_hw_rates(runtime); | |
1552 | ||
1553 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1554 | return 0; | |
1555 | ||
1556 | unwind: | |
1557 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); | |
1558 | be_err: | |
1559 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1560 | return ret; | |
1561 | } | |
1562 | ||
23607025 | 1563 | int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1564 | { |
1565 | struct snd_soc_dpcm *dpcm; | |
1566 | ||
1567 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ | |
1568 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1569 | ||
1570 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1571 | struct snd_pcm_substream *be_substream = | |
1572 | snd_soc_dpcm_get_substream(be, stream); | |
1573 | ||
1574 | /* is this op for this BE ? */ | |
1575 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1576 | continue; | |
1577 | ||
1578 | if (be->dpcm[stream].users == 0) | |
103d84a3 | 1579 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1580 | stream ? "capture" : "playback", |
1581 | be->dpcm[stream].state); | |
1582 | ||
1583 | if (--be->dpcm[stream].users != 0) | |
1584 | continue; | |
1585 | ||
1586 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1587 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) | |
1588 | continue; | |
1589 | ||
103d84a3 | 1590 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
01d7584c LG |
1591 | dpcm->fe->dai_link->name); |
1592 | ||
1593 | soc_pcm_close(be_substream); | |
1594 | be_substream->runtime = NULL; | |
1595 | ||
1596 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1597 | } | |
1598 | return 0; | |
1599 | } | |
1600 | ||
1601 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) | |
1602 | { | |
1603 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1604 | int stream = substream->stream; | |
1605 | ||
1606 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1607 | ||
1608 | /* shutdown the BEs */ | |
1609 | dpcm_be_dai_shutdown(fe, substream->stream); | |
1610 | ||
103d84a3 | 1611 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1612 | |
1613 | /* now shutdown the frontend */ | |
1614 | soc_pcm_close(substream); | |
1615 | ||
1616 | /* run the stream event for each BE */ | |
1617 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1618 | ||
1619 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1620 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1621 | return 0; | |
1622 | } | |
1623 | ||
23607025 | 1624 | int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1625 | { |
1626 | struct snd_soc_dpcm *dpcm; | |
1627 | ||
1628 | /* only hw_params backends that are either sinks or sources | |
1629 | * to this frontend DAI */ | |
1630 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1631 | ||
1632 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1633 | struct snd_pcm_substream *be_substream = | |
1634 | snd_soc_dpcm_get_substream(be, stream); | |
1635 | ||
1636 | /* is this op for this BE ? */ | |
1637 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1638 | continue; | |
1639 | ||
1640 | /* only free hw when no longer used - check all FEs */ | |
1641 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1642 | continue; | |
1643 | ||
1644 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1645 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1646 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1647 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
01d7584c LG |
1648 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
1649 | continue; | |
1650 | ||
103d84a3 | 1651 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
01d7584c LG |
1652 | dpcm->fe->dai_link->name); |
1653 | ||
1654 | soc_pcm_hw_free(be_substream); | |
1655 | ||
1656 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1657 | } | |
1658 | ||
1659 | return 0; | |
1660 | } | |
1661 | ||
45c0a188 | 1662 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c LG |
1663 | { |
1664 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1665 | int err, stream = substream->stream; | |
1666 | ||
1667 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1668 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1669 | ||
103d84a3 | 1670 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1671 | |
1672 | /* call hw_free on the frontend */ | |
1673 | err = soc_pcm_hw_free(substream); | |
1674 | if (err < 0) | |
103d84a3 | 1675 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
01d7584c LG |
1676 | fe->dai_link->name); |
1677 | ||
1678 | /* only hw_params backends that are either sinks or sources | |
1679 | * to this frontend DAI */ | |
1680 | err = dpcm_be_dai_hw_free(fe, stream); | |
1681 | ||
1682 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1683 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1684 | ||
1685 | mutex_unlock(&fe->card->mutex); | |
1686 | return 0; | |
1687 | } | |
1688 | ||
23607025 | 1689 | int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1690 | { |
1691 | struct snd_soc_dpcm *dpcm; | |
1692 | int ret; | |
1693 | ||
1694 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1695 | ||
1696 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1697 | struct snd_pcm_substream *be_substream = | |
1698 | snd_soc_dpcm_get_substream(be, stream); | |
1699 | ||
1700 | /* is this op for this BE ? */ | |
1701 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1702 | continue; | |
1703 | ||
1704 | /* only allow hw_params() if no connected FEs are running */ | |
1705 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
1706 | continue; | |
1707 | ||
1708 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1709 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1710 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
1711 | continue; | |
1712 | ||
103d84a3 | 1713 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
01d7584c LG |
1714 | dpcm->fe->dai_link->name); |
1715 | ||
1716 | /* copy params for each dpcm */ | |
1717 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, | |
1718 | sizeof(struct snd_pcm_hw_params)); | |
1719 | ||
1720 | /* perform any hw_params fixups */ | |
1721 | if (be->dai_link->be_hw_params_fixup) { | |
1722 | ret = be->dai_link->be_hw_params_fixup(be, | |
1723 | &dpcm->hw_params); | |
1724 | if (ret < 0) { | |
1725 | dev_err(be->dev, | |
103d84a3 | 1726 | "ASoC: hw_params BE fixup failed %d\n", |
01d7584c LG |
1727 | ret); |
1728 | goto unwind; | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); | |
1733 | if (ret < 0) { | |
1734 | dev_err(dpcm->be->dev, | |
103d84a3 | 1735 | "ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1736 | goto unwind; |
1737 | } | |
1738 | ||
1739 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1740 | } | |
1741 | return 0; | |
1742 | ||
1743 | unwind: | |
1744 | /* disable any enabled and non active backends */ | |
1745 | list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1746 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1747 | struct snd_pcm_substream *be_substream = | |
1748 | snd_soc_dpcm_get_substream(be, stream); | |
1749 | ||
1750 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1751 | continue; | |
1752 | ||
1753 | /* only allow hw_free() if no connected FEs are running */ | |
1754 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1755 | continue; | |
1756 | ||
1757 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
1758 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
1759 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
1760 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1761 | continue; | |
1762 | ||
1763 | soc_pcm_hw_free(be_substream); | |
1764 | } | |
1765 | ||
1766 | return ret; | |
1767 | } | |
1768 | ||
45c0a188 MB |
1769 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
1770 | struct snd_pcm_hw_params *params) | |
01d7584c LG |
1771 | { |
1772 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1773 | int ret, stream = substream->stream; | |
1774 | ||
1775 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
1776 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1777 | ||
1778 | memcpy(&fe->dpcm[substream->stream].hw_params, params, | |
1779 | sizeof(struct snd_pcm_hw_params)); | |
1780 | ret = dpcm_be_dai_hw_params(fe, substream->stream); | |
1781 | if (ret < 0) { | |
103d84a3 | 1782 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
01d7584c LG |
1783 | goto out; |
1784 | } | |
1785 | ||
103d84a3 | 1786 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
1787 | fe->dai_link->name, params_rate(params), |
1788 | params_channels(params), params_format(params)); | |
1789 | ||
1790 | /* call hw_params on the frontend */ | |
1791 | ret = soc_pcm_hw_params(substream, params); | |
1792 | if (ret < 0) { | |
103d84a3 | 1793 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
01d7584c LG |
1794 | dpcm_be_dai_hw_free(fe, stream); |
1795 | } else | |
1796 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
1797 | ||
1798 | out: | |
1799 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1800 | mutex_unlock(&fe->card->mutex); | |
1801 | return ret; | |
1802 | } | |
1803 | ||
1804 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, | |
1805 | struct snd_pcm_substream *substream, int cmd) | |
1806 | { | |
1807 | int ret; | |
1808 | ||
103d84a3 | 1809 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
01d7584c LG |
1810 | dpcm->fe->dai_link->name, cmd); |
1811 | ||
1812 | ret = soc_pcm_trigger(substream, cmd); | |
1813 | if (ret < 0) | |
103d84a3 | 1814 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
01d7584c LG |
1815 | |
1816 | return ret; | |
1817 | } | |
1818 | ||
23607025 | 1819 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
45c0a188 | 1820 | int cmd) |
01d7584c LG |
1821 | { |
1822 | struct snd_soc_dpcm *dpcm; | |
1823 | int ret = 0; | |
1824 | ||
1825 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1826 | ||
1827 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1828 | struct snd_pcm_substream *be_substream = | |
1829 | snd_soc_dpcm_get_substream(be, stream); | |
1830 | ||
1831 | /* is this op for this BE ? */ | |
1832 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1833 | continue; | |
1834 | ||
1835 | switch (cmd) { | |
1836 | case SNDRV_PCM_TRIGGER_START: | |
1837 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1838 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
1839 | continue; | |
1840 | ||
1841 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1842 | if (ret) | |
1843 | return ret; | |
1844 | ||
1845 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1846 | break; | |
1847 | case SNDRV_PCM_TRIGGER_RESUME: | |
1848 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
1849 | continue; | |
1850 | ||
1851 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1852 | if (ret) | |
1853 | return ret; | |
1854 | ||
1855 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1856 | break; | |
1857 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1858 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
1859 | continue; | |
1860 | ||
1861 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1862 | if (ret) | |
1863 | return ret; | |
1864 | ||
1865 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1866 | break; | |
1867 | case SNDRV_PCM_TRIGGER_STOP: | |
1868 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1869 | continue; | |
1870 | ||
1871 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1872 | continue; | |
1873 | ||
1874 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1875 | if (ret) | |
1876 | return ret; | |
1877 | ||
1878 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1879 | break; | |
1880 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
868a6ca8 | 1881 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
01d7584c LG |
1882 | continue; |
1883 | ||
1884 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1885 | continue; | |
1886 | ||
1887 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1888 | if (ret) | |
1889 | return ret; | |
1890 | ||
1891 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; | |
1892 | break; | |
1893 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1894 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
1895 | continue; | |
1896 | ||
1897 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1898 | continue; | |
1899 | ||
1900 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); | |
1901 | if (ret) | |
1902 | return ret; | |
1903 | ||
1904 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
1905 | break; | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | return ret; | |
1910 | } | |
1911 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
1912 | ||
45c0a188 | 1913 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c LG |
1914 | { |
1915 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
1916 | int stream = substream->stream, ret; | |
1917 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
1918 | ||
1919 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
1920 | ||
1921 | switch (trigger) { | |
1922 | case SND_SOC_DPCM_TRIGGER_PRE: | |
1923 | /* call trigger on the frontend before the backend. */ | |
1924 | ||
103d84a3 | 1925 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
01d7584c LG |
1926 | fe->dai_link->name, cmd); |
1927 | ||
1928 | ret = soc_pcm_trigger(substream, cmd); | |
1929 | if (ret < 0) { | |
103d84a3 | 1930 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1931 | goto out; |
1932 | } | |
1933 | ||
1934 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1935 | break; | |
1936 | case SND_SOC_DPCM_TRIGGER_POST: | |
1937 | /* call trigger on the frontend after the backend. */ | |
1938 | ||
1939 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
1940 | if (ret < 0) { | |
103d84a3 | 1941 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
01d7584c LG |
1942 | goto out; |
1943 | } | |
1944 | ||
103d84a3 | 1945 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
01d7584c LG |
1946 | fe->dai_link->name, cmd); |
1947 | ||
1948 | ret = soc_pcm_trigger(substream, cmd); | |
1949 | break; | |
07bf84aa LG |
1950 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
1951 | /* bespoke trigger() - handles both FE and BEs */ | |
1952 | ||
103d84a3 | 1953 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
1954 | fe->dai_link->name, cmd); |
1955 | ||
1956 | ret = soc_pcm_bespoke_trigger(substream, cmd); | |
1957 | if (ret < 0) { | |
103d84a3 | 1958 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
1959 | goto out; |
1960 | } | |
1961 | break; | |
01d7584c | 1962 | default: |
103d84a3 | 1963 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
1964 | fe->dai_link->name); |
1965 | ret = -EINVAL; | |
1966 | goto out; | |
1967 | } | |
1968 | ||
1969 | switch (cmd) { | |
1970 | case SNDRV_PCM_TRIGGER_START: | |
1971 | case SNDRV_PCM_TRIGGER_RESUME: | |
1972 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1973 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
1974 | break; | |
1975 | case SNDRV_PCM_TRIGGER_STOP: | |
1976 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1977 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1978 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
1979 | break; | |
1980 | } | |
1981 | ||
1982 | out: | |
1983 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
1984 | return ret; | |
1985 | } | |
1986 | ||
23607025 | 1987 | int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1988 | { |
1989 | struct snd_soc_dpcm *dpcm; | |
1990 | int ret = 0; | |
1991 | ||
1992 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
1993 | ||
1994 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1995 | struct snd_pcm_substream *be_substream = | |
1996 | snd_soc_dpcm_get_substream(be, stream); | |
1997 | ||
1998 | /* is this op for this BE ? */ | |
1999 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
2000 | continue; | |
2001 | ||
2002 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2003 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
2004 | continue; | |
2005 | ||
103d84a3 | 2006 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
01d7584c LG |
2007 | dpcm->fe->dai_link->name); |
2008 | ||
2009 | ret = soc_pcm_prepare(be_substream); | |
2010 | if (ret < 0) { | |
103d84a3 | 2011 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
01d7584c LG |
2012 | ret); |
2013 | break; | |
2014 | } | |
2015 | ||
2016 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
2017 | } | |
2018 | return ret; | |
2019 | } | |
2020 | ||
45c0a188 | 2021 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c LG |
2022 | { |
2023 | struct snd_soc_pcm_runtime *fe = substream->private_data; | |
2024 | int stream = substream->stream, ret = 0; | |
2025 | ||
2026 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2027 | ||
103d84a3 | 2028 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c LG |
2029 | |
2030 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
2031 | ||
2032 | /* there is no point preparing this FE if there are no BEs */ | |
2033 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
103d84a3 | 2034 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
01d7584c LG |
2035 | fe->dai_link->name); |
2036 | ret = -EINVAL; | |
2037 | goto out; | |
2038 | } | |
2039 | ||
2040 | ret = dpcm_be_dai_prepare(fe, substream->stream); | |
2041 | if (ret < 0) | |
2042 | goto out; | |
2043 | ||
2044 | /* call prepare on the frontend */ | |
2045 | ret = soc_pcm_prepare(substream); | |
2046 | if (ret < 0) { | |
103d84a3 | 2047 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
01d7584c LG |
2048 | fe->dai_link->name); |
2049 | goto out; | |
2050 | } | |
2051 | ||
2052 | /* run the stream event for each BE */ | |
2053 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); | |
2054 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
2055 | ||
2056 | out: | |
2057 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
2058 | mutex_unlock(&fe->card->mutex); | |
2059 | ||
2060 | return ret; | |
2061 | } | |
2062 | ||
be3f3f2c LG |
2063 | static int soc_pcm_ioctl(struct snd_pcm_substream *substream, |
2064 | unsigned int cmd, void *arg) | |
2065 | { | |
2066 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
2067 | struct snd_soc_platform *platform = rtd->platform; | |
2068 | ||
c5914b0a | 2069 | if (platform->driver->ops && platform->driver->ops->ioctl) |
be3f3f2c LG |
2070 | return platform->driver->ops->ioctl(substream, cmd, arg); |
2071 | return snd_pcm_lib_ioctl(substream, cmd, arg); | |
2072 | } | |
2073 | ||
618dae11 LG |
2074 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
2075 | { | |
07bf84aa LG |
2076 | struct snd_pcm_substream *substream = |
2077 | snd_soc_dpcm_get_substream(fe, stream); | |
2078 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
2079 | int err; |
2080 | ||
103d84a3 | 2081 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
2082 | stream ? "capture" : "playback", fe->dai_link->name); |
2083 | ||
07bf84aa LG |
2084 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
2085 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 2086 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
2087 | fe->dai_link->name); |
2088 | ||
2089 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
2090 | if (err < 0) | |
103d84a3 | 2091 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 2092 | } else { |
103d84a3 | 2093 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
2094 | fe->dai_link->name); |
2095 | ||
2096 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
2097 | if (err < 0) | |
103d84a3 | 2098 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
07bf84aa | 2099 | } |
618dae11 LG |
2100 | |
2101 | err = dpcm_be_dai_hw_free(fe, stream); | |
2102 | if (err < 0) | |
103d84a3 | 2103 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
618dae11 LG |
2104 | |
2105 | err = dpcm_be_dai_shutdown(fe, stream); | |
2106 | if (err < 0) | |
103d84a3 | 2107 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
618dae11 LG |
2108 | |
2109 | /* run the stream event for each BE */ | |
2110 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
2111 | ||
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
2116 | { | |
07bf84aa LG |
2117 | struct snd_pcm_substream *substream = |
2118 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 2119 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 2120 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
618dae11 LG |
2121 | int ret; |
2122 | ||
103d84a3 | 2123 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
2124 | stream ? "capture" : "playback", fe->dai_link->name); |
2125 | ||
2126 | /* Only start the BE if the FE is ready */ | |
2127 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
2128 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) | |
2129 | return -EINVAL; | |
2130 | ||
2131 | /* startup must always be called for new BEs */ | |
2132 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 2133 | if (ret < 0) |
618dae11 | 2134 | goto disconnect; |
618dae11 LG |
2135 | |
2136 | /* keep going if FE state is > open */ | |
2137 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
2138 | return 0; | |
01d7584c | 2139 | |
618dae11 | 2140 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 2141 | if (ret < 0) |
618dae11 | 2142 | goto close; |
618dae11 LG |
2143 | |
2144 | /* keep going if FE state is > hw_params */ | |
2145 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
2146 | return 0; | |
2147 | ||
2148 | ||
2149 | ret = dpcm_be_dai_prepare(fe, stream); | |
fffc0ca2 | 2150 | if (ret < 0) |
618dae11 | 2151 | goto hw_free; |
618dae11 LG |
2152 | |
2153 | /* run the stream event for each BE */ | |
2154 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
2155 | ||
2156 | /* keep going if FE state is > prepare */ | |
2157 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
2158 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
2159 | return 0; | |
2160 | ||
07bf84aa LG |
2161 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
2162 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 2163 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 2164 | fe->dai_link->name); |
618dae11 | 2165 | |
07bf84aa LG |
2166 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
2167 | if (ret < 0) { | |
103d84a3 | 2168 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
07bf84aa LG |
2169 | goto hw_free; |
2170 | } | |
2171 | } else { | |
103d84a3 | 2172 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
2173 | fe->dai_link->name); |
2174 | ||
2175 | ret = dpcm_be_dai_trigger(fe, stream, | |
2176 | SNDRV_PCM_TRIGGER_START); | |
2177 | if (ret < 0) { | |
103d84a3 | 2178 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
07bf84aa LG |
2179 | goto hw_free; |
2180 | } | |
618dae11 LG |
2181 | } |
2182 | ||
2183 | return 0; | |
2184 | ||
2185 | hw_free: | |
2186 | dpcm_be_dai_hw_free(fe, stream); | |
2187 | close: | |
2188 | dpcm_be_dai_shutdown(fe, stream); | |
2189 | disconnect: | |
2190 | /* disconnect any non started BEs */ | |
2191 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2192 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2193 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) | |
2194 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2195 | } | |
2196 | ||
2197 | return ret; | |
2198 | } | |
2199 | ||
2200 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2201 | { | |
2202 | int ret; | |
2203 | ||
2204 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
2205 | ret = dpcm_run_update_startup(fe, stream); | |
2206 | if (ret < 0) | |
103d84a3 | 2207 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
618dae11 LG |
2208 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
2209 | ||
2210 | return ret; | |
2211 | } | |
2212 | ||
2213 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2214 | { | |
2215 | int ret; | |
2216 | ||
2217 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; | |
2218 | ret = dpcm_run_update_shutdown(fe, stream); | |
2219 | if (ret < 0) | |
103d84a3 | 2220 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
618dae11 LG |
2221 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
2222 | ||
2223 | return ret; | |
2224 | } | |
2225 | ||
2226 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
2227 | * any DAI links. | |
2228 | */ | |
c3f48ae6 | 2229 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
618dae11 | 2230 | { |
618dae11 LG |
2231 | int i, old, new, paths; |
2232 | ||
618dae11 LG |
2233 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
2234 | for (i = 0; i < card->num_rtd; i++) { | |
2235 | struct snd_soc_dapm_widget_list *list; | |
2236 | struct snd_soc_pcm_runtime *fe = &card->rtd[i]; | |
2237 | ||
2238 | /* make sure link is FE */ | |
2239 | if (!fe->dai_link->dynamic) | |
2240 | continue; | |
2241 | ||
2242 | /* only check active links */ | |
2243 | if (!fe->cpu_dai->active) | |
2244 | continue; | |
2245 | ||
2246 | /* DAPM sync will call this to update DSP paths */ | |
103d84a3 | 2247 | dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n", |
618dae11 LG |
2248 | fe->dai_link->name); |
2249 | ||
2250 | /* skip if FE doesn't have playback capability */ | |
2251 | if (!fe->cpu_dai->driver->playback.channels_min) | |
2252 | goto capture; | |
2253 | ||
2254 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); | |
2255 | if (paths < 0) { | |
103d84a3 | 2256 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
2257 | fe->dai_link->name, "playback"); |
2258 | mutex_unlock(&card->mutex); | |
2259 | return paths; | |
2260 | } | |
2261 | ||
2262 | /* update any new playback paths */ | |
2263 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1); | |
2264 | if (new) { | |
2265 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2266 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2267 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2268 | } | |
2269 | ||
2270 | /* update any old playback paths */ | |
2271 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0); | |
2272 | if (old) { | |
2273 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2274 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2275 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); | |
2276 | } | |
2277 | ||
7ed9de76 | 2278 | dpcm_path_put(&list); |
618dae11 LG |
2279 | capture: |
2280 | /* skip if FE doesn't have capture capability */ | |
2281 | if (!fe->cpu_dai->driver->capture.channels_min) | |
2282 | continue; | |
2283 | ||
2284 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); | |
2285 | if (paths < 0) { | |
103d84a3 | 2286 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
618dae11 LG |
2287 | fe->dai_link->name, "capture"); |
2288 | mutex_unlock(&card->mutex); | |
2289 | return paths; | |
2290 | } | |
2291 | ||
2292 | /* update any new capture paths */ | |
2293 | new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1); | |
2294 | if (new) { | |
2295 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2296 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2297 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2298 | } | |
2299 | ||
2300 | /* update any old capture paths */ | |
2301 | old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0); | |
2302 | if (old) { | |
2303 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2304 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2305 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); | |
2306 | } | |
2307 | ||
2308 | dpcm_path_put(&list); | |
2309 | } | |
2310 | ||
2311 | mutex_unlock(&card->mutex); | |
2312 | return 0; | |
2313 | } | |
01d7584c LG |
2314 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
2315 | { | |
2316 | struct snd_soc_dpcm *dpcm; | |
2317 | struct list_head *clients = | |
2318 | &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients; | |
2319 | ||
2320 | list_for_each_entry(dpcm, clients, list_be) { | |
2321 | ||
2322 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2e5894d7 | 2323 | int i; |
01d7584c LG |
2324 | |
2325 | if (be->dai_link->ignore_suspend) | |
2326 | continue; | |
2327 | ||
2e5894d7 BC |
2328 | for (i = 0; i < be->num_codecs; i++) { |
2329 | struct snd_soc_dai *dai = be->codec_dais[i]; | |
2330 | struct snd_soc_dai_driver *drv = dai->driver; | |
2331 | ||
2332 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", | |
2333 | be->dai_link->name); | |
01d7584c | 2334 | |
2e5894d7 BC |
2335 | if (drv->ops && drv->ops->digital_mute && |
2336 | dai->playback_active) | |
2337 | drv->ops->digital_mute(dai, mute); | |
2338 | } | |
01d7584c LG |
2339 | } |
2340 | ||
2341 | return 0; | |
2342 | } | |
2343 | ||
45c0a188 | 2344 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2345 | { |
2346 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2347 | struct snd_soc_dpcm *dpcm; | |
2348 | struct snd_soc_dapm_widget_list *list; | |
2349 | int ret; | |
2350 | int stream = fe_substream->stream; | |
2351 | ||
2352 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2353 | fe->dpcm[stream].runtime = fe_substream->runtime; | |
2354 | ||
8f70e515 QZ |
2355 | ret = dpcm_path_get(fe, stream, &list); |
2356 | if (ret < 0) { | |
2357 | mutex_unlock(&fe->card->mutex); | |
2358 | return ret; | |
2359 | } else if (ret == 0) { | |
103d84a3 | 2360 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
01d7584c | 2361 | fe->dai_link->name, stream ? "capture" : "playback"); |
01d7584c LG |
2362 | } |
2363 | ||
2364 | /* calculate valid and active FE <-> BE dpcms */ | |
2365 | dpcm_process_paths(fe, stream, &list, 1); | |
2366 | ||
2367 | ret = dpcm_fe_dai_startup(fe_substream); | |
2368 | if (ret < 0) { | |
2369 | /* clean up all links */ | |
2370 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2371 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2372 | ||
2373 | dpcm_be_disconnect(fe, stream); | |
2374 | fe->dpcm[stream].runtime = NULL; | |
2375 | } | |
2376 | ||
2377 | dpcm_clear_pending_state(fe, stream); | |
2378 | dpcm_path_put(&list); | |
2379 | mutex_unlock(&fe->card->mutex); | |
2380 | return ret; | |
2381 | } | |
2382 | ||
45c0a188 | 2383 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
01d7584c LG |
2384 | { |
2385 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; | |
2386 | struct snd_soc_dpcm *dpcm; | |
2387 | int stream = fe_substream->stream, ret; | |
2388 | ||
2389 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); | |
2390 | ret = dpcm_fe_dai_shutdown(fe_substream); | |
2391 | ||
2392 | /* mark FE's links ready to prune */ | |
2393 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) | |
2394 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2395 | ||
2396 | dpcm_be_disconnect(fe, stream); | |
2397 | ||
2398 | fe->dpcm[stream].runtime = NULL; | |
2399 | mutex_unlock(&fe->card->mutex); | |
2400 | return ret; | |
2401 | } | |
2402 | ||
ddee627c LG |
2403 | /* create a new pcm */ |
2404 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2405 | { | |
ddee627c | 2406 | struct snd_soc_platform *platform = rtd->platform; |
2e5894d7 | 2407 | struct snd_soc_dai *codec_dai; |
ddee627c LG |
2408 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
2409 | struct snd_pcm *pcm; | |
2410 | char new_name[64]; | |
2411 | int ret = 0, playback = 0, capture = 0; | |
2e5894d7 | 2412 | int i; |
ddee627c | 2413 | |
01d7584c | 2414 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
1e9de42f LG |
2415 | playback = rtd->dai_link->dpcm_playback; |
2416 | capture = rtd->dai_link->dpcm_capture; | |
01d7584c | 2417 | } else { |
2e5894d7 BC |
2418 | for (i = 0; i < rtd->num_codecs; i++) { |
2419 | codec_dai = rtd->codec_dais[i]; | |
2420 | if (codec_dai->driver->playback.channels_min) | |
2421 | playback = 1; | |
2422 | if (codec_dai->driver->capture.channels_min) | |
2423 | capture = 1; | |
2424 | } | |
2425 | ||
2426 | capture = capture && cpu_dai->driver->capture.channels_min; | |
2427 | playback = playback && cpu_dai->driver->playback.channels_min; | |
01d7584c LG |
2428 | } |
2429 | ||
d6bead02 FE |
2430 | if (rtd->dai_link->playback_only) { |
2431 | playback = 1; | |
2432 | capture = 0; | |
2433 | } | |
2434 | ||
2435 | if (rtd->dai_link->capture_only) { | |
2436 | playback = 0; | |
2437 | capture = 1; | |
2438 | } | |
2439 | ||
01d7584c LG |
2440 | /* create the PCM */ |
2441 | if (rtd->dai_link->no_pcm) { | |
2442 | snprintf(new_name, sizeof(new_name), "(%s)", | |
2443 | rtd->dai_link->stream_name); | |
2444 | ||
2445 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2446 | playback, capture, &pcm); | |
2447 | } else { | |
2448 | if (rtd->dai_link->dynamic) | |
2449 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2450 | rtd->dai_link->stream_name); | |
2451 | else | |
2452 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2e5894d7 BC |
2453 | rtd->dai_link->stream_name, |
2454 | (rtd->num_codecs > 1) ? | |
2455 | "multicodec" : rtd->codec_dai->name, num); | |
01d7584c LG |
2456 | |
2457 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2458 | capture, &pcm); | |
2459 | } | |
ddee627c | 2460 | if (ret < 0) { |
103d84a3 | 2461 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
5cb9b748 | 2462 | rtd->dai_link->name); |
ddee627c LG |
2463 | return ret; |
2464 | } | |
103d84a3 | 2465 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c LG |
2466 | |
2467 | /* DAPM dai link stream work */ | |
2468 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); | |
2469 | ||
2470 | rtd->pcm = pcm; | |
2471 | pcm->private_data = rtd; | |
01d7584c LG |
2472 | |
2473 | if (rtd->dai_link->no_pcm) { | |
2474 | if (playback) | |
2475 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2476 | if (capture) | |
2477 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2478 | goto out; | |
2479 | } | |
2480 | ||
2481 | /* ASoC PCM operations */ | |
2482 | if (rtd->dai_link->dynamic) { | |
2483 | rtd->ops.open = dpcm_fe_dai_open; | |
2484 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2485 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2486 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2487 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2488 | rtd->ops.close = dpcm_fe_dai_close; | |
2489 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2490 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2491 | } else { |
2492 | rtd->ops.open = soc_pcm_open; | |
2493 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2494 | rtd->ops.prepare = soc_pcm_prepare; | |
2495 | rtd->ops.trigger = soc_pcm_trigger; | |
2496 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2497 | rtd->ops.close = soc_pcm_close; | |
2498 | rtd->ops.pointer = soc_pcm_pointer; | |
be3f3f2c | 2499 | rtd->ops.ioctl = soc_pcm_ioctl; |
01d7584c LG |
2500 | } |
2501 | ||
ddee627c | 2502 | if (platform->driver->ops) { |
01d7584c LG |
2503 | rtd->ops.ack = platform->driver->ops->ack; |
2504 | rtd->ops.copy = platform->driver->ops->copy; | |
2505 | rtd->ops.silence = platform->driver->ops->silence; | |
2506 | rtd->ops.page = platform->driver->ops->page; | |
2507 | rtd->ops.mmap = platform->driver->ops->mmap; | |
ddee627c LG |
2508 | } |
2509 | ||
2510 | if (playback) | |
01d7584c | 2511 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2512 | |
2513 | if (capture) | |
01d7584c | 2514 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c LG |
2515 | |
2516 | if (platform->driver->pcm_new) { | |
2517 | ret = platform->driver->pcm_new(rtd); | |
2518 | if (ret < 0) { | |
b1bc7b3c MB |
2519 | dev_err(platform->dev, |
2520 | "ASoC: pcm constructor failed: %d\n", | |
2521 | ret); | |
ddee627c LG |
2522 | return ret; |
2523 | } | |
2524 | } | |
2525 | ||
2526 | pcm->private_free = platform->driver->pcm_free; | |
01d7584c | 2527 | out: |
2e5894d7 BC |
2528 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", |
2529 | (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name, | |
2530 | cpu_dai->name); | |
ddee627c LG |
2531 | return ret; |
2532 | } | |
01d7584c LG |
2533 | |
2534 | /* is the current PCM operation for this FE ? */ | |
2535 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
2536 | { | |
2537 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
2538 | return 1; | |
2539 | return 0; | |
2540 | } | |
2541 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
2542 | ||
2543 | /* is the current PCM operation for this BE ? */ | |
2544 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
2545 | struct snd_soc_pcm_runtime *be, int stream) | |
2546 | { | |
2547 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
2548 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
2549 | be->dpcm[stream].runtime_update)) | |
2550 | return 1; | |
2551 | return 0; | |
2552 | } | |
2553 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
2554 | ||
2555 | /* get the substream for this BE */ | |
2556 | struct snd_pcm_substream * | |
2557 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
2558 | { | |
2559 | return be->pcm->streams[stream].substream; | |
2560 | } | |
2561 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
2562 | ||
2563 | /* get the BE runtime state */ | |
2564 | enum snd_soc_dpcm_state | |
2565 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) | |
2566 | { | |
2567 | return be->dpcm[stream].state; | |
2568 | } | |
2569 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); | |
2570 | ||
2571 | /* set the BE runtime state */ | |
2572 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, | |
2573 | int stream, enum snd_soc_dpcm_state state) | |
2574 | { | |
2575 | be->dpcm[stream].state = state; | |
2576 | } | |
2577 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); | |
2578 | ||
2579 | /* | |
2580 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
2581 | * are not running, paused or suspended for the specified stream direction. | |
2582 | */ | |
2583 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
2584 | struct snd_soc_pcm_runtime *be, int stream) | |
2585 | { | |
2586 | struct snd_soc_dpcm *dpcm; | |
2587 | int state; | |
2588 | ||
2589 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2590 | ||
2591 | if (dpcm->fe == fe) | |
2592 | continue; | |
2593 | ||
2594 | state = dpcm->fe->dpcm[stream].state; | |
2595 | if (state == SND_SOC_DPCM_STATE_START || | |
2596 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2597 | state == SND_SOC_DPCM_STATE_SUSPEND) | |
2598 | return 0; | |
2599 | } | |
2600 | ||
2601 | /* it's safe to free/stop this BE DAI */ | |
2602 | return 1; | |
2603 | } | |
2604 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); | |
2605 | ||
2606 | /* | |
2607 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
2608 | * running, paused or suspended for the specified stream direction. | |
2609 | */ | |
2610 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
2611 | struct snd_soc_pcm_runtime *be, int stream) | |
2612 | { | |
2613 | struct snd_soc_dpcm *dpcm; | |
2614 | int state; | |
2615 | ||
2616 | list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { | |
2617 | ||
2618 | if (dpcm->fe == fe) | |
2619 | continue; | |
2620 | ||
2621 | state = dpcm->fe->dpcm[stream].state; | |
2622 | if (state == SND_SOC_DPCM_STATE_START || | |
2623 | state == SND_SOC_DPCM_STATE_PAUSED || | |
2624 | state == SND_SOC_DPCM_STATE_SUSPEND || | |
2625 | state == SND_SOC_DPCM_STATE_PREPARE) | |
2626 | return 0; | |
2627 | } | |
2628 | ||
2629 | /* it's safe to change hw_params */ | |
2630 | return 1; | |
2631 | } | |
2632 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
f86dcef8 | 2633 | |
07bf84aa LG |
2634 | int snd_soc_platform_trigger(struct snd_pcm_substream *substream, |
2635 | int cmd, struct snd_soc_platform *platform) | |
2636 | { | |
c5914b0a | 2637 | if (platform->driver->ops && platform->driver->ops->trigger) |
07bf84aa LG |
2638 | return platform->driver->ops->trigger(substream, cmd); |
2639 | return 0; | |
2640 | } | |
2641 | EXPORT_SYMBOL_GPL(snd_soc_platform_trigger); | |
2642 | ||
f86dcef8 LG |
2643 | #ifdef CONFIG_DEBUG_FS |
2644 | static char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
2645 | { | |
2646 | switch (state) { | |
2647 | case SND_SOC_DPCM_STATE_NEW: | |
2648 | return "new"; | |
2649 | case SND_SOC_DPCM_STATE_OPEN: | |
2650 | return "open"; | |
2651 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
2652 | return "hw_params"; | |
2653 | case SND_SOC_DPCM_STATE_PREPARE: | |
2654 | return "prepare"; | |
2655 | case SND_SOC_DPCM_STATE_START: | |
2656 | return "start"; | |
2657 | case SND_SOC_DPCM_STATE_STOP: | |
2658 | return "stop"; | |
2659 | case SND_SOC_DPCM_STATE_SUSPEND: | |
2660 | return "suspend"; | |
2661 | case SND_SOC_DPCM_STATE_PAUSED: | |
2662 | return "paused"; | |
2663 | case SND_SOC_DPCM_STATE_HW_FREE: | |
2664 | return "hw_free"; | |
2665 | case SND_SOC_DPCM_STATE_CLOSE: | |
2666 | return "close"; | |
2667 | } | |
2668 | ||
2669 | return "unknown"; | |
2670 | } | |
2671 | ||
f86dcef8 LG |
2672 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
2673 | int stream, char *buf, size_t size) | |
2674 | { | |
2675 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
2676 | struct snd_soc_dpcm *dpcm; | |
2677 | ssize_t offset = 0; | |
2678 | ||
2679 | /* FE state */ | |
2680 | offset += snprintf(buf + offset, size - offset, | |
2681 | "[%s - %s]\n", fe->dai_link->name, | |
2682 | stream ? "Capture" : "Playback"); | |
2683 | ||
2684 | offset += snprintf(buf + offset, size - offset, "State: %s\n", | |
2685 | dpcm_state_string(fe->dpcm[stream].state)); | |
2686 | ||
2687 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2688 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2689 | offset += snprintf(buf + offset, size - offset, | |
2690 | "Hardware Params: " | |
2691 | "Format = %s, Channels = %d, Rate = %d\n", | |
2692 | snd_pcm_format_name(params_format(params)), | |
2693 | params_channels(params), | |
2694 | params_rate(params)); | |
2695 | ||
2696 | /* BEs state */ | |
2697 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); | |
2698 | ||
2699 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
2700 | offset += snprintf(buf + offset, size - offset, | |
2701 | " No active DSP links\n"); | |
2702 | goto out; | |
2703 | } | |
2704 | ||
2705 | list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { | |
2706 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2707 | params = &dpcm->hw_params; | |
2708 | ||
2709 | offset += snprintf(buf + offset, size - offset, | |
2710 | "- %s\n", be->dai_link->name); | |
2711 | ||
2712 | offset += snprintf(buf + offset, size - offset, | |
2713 | " State: %s\n", | |
2714 | dpcm_state_string(be->dpcm[stream].state)); | |
2715 | ||
2716 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2717 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
2718 | offset += snprintf(buf + offset, size - offset, | |
2719 | " Hardware Params: " | |
2720 | "Format = %s, Channels = %d, Rate = %d\n", | |
2721 | snd_pcm_format_name(params_format(params)), | |
2722 | params_channels(params), | |
2723 | params_rate(params)); | |
2724 | } | |
2725 | ||
2726 | out: | |
2727 | return offset; | |
2728 | } | |
2729 | ||
2730 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
2731 | size_t count, loff_t *ppos) | |
2732 | { | |
2733 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
2734 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
2735 | char *buf; | |
2736 | ||
2737 | buf = kmalloc(out_count, GFP_KERNEL); | |
2738 | if (!buf) | |
2739 | return -ENOMEM; | |
2740 | ||
2741 | if (fe->cpu_dai->driver->playback.channels_min) | |
2742 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, | |
2743 | buf + offset, out_count - offset); | |
2744 | ||
2745 | if (fe->cpu_dai->driver->capture.channels_min) | |
2746 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, | |
2747 | buf + offset, out_count - offset); | |
2748 | ||
f57b8488 | 2749 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
f86dcef8 | 2750 | |
f57b8488 LG |
2751 | kfree(buf); |
2752 | return ret; | |
f86dcef8 LG |
2753 | } |
2754 | ||
2755 | static const struct file_operations dpcm_state_fops = { | |
f57b8488 | 2756 | .open = simple_open, |
f86dcef8 LG |
2757 | .read = dpcm_state_read_file, |
2758 | .llseek = default_llseek, | |
2759 | }; | |
2760 | ||
2761 | int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
2762 | { | |
b3bba9a1 MB |
2763 | if (!rtd->dai_link) |
2764 | return 0; | |
2765 | ||
f86dcef8 LG |
2766 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
2767 | rtd->card->debugfs_card_root); | |
2768 | if (!rtd->debugfs_dpcm_root) { | |
2769 | dev_dbg(rtd->dev, | |
2770 | "ASoC: Failed to create dpcm debugfs directory %s\n", | |
2771 | rtd->dai_link->name); | |
2772 | return -EINVAL; | |
2773 | } | |
2774 | ||
f57b8488 | 2775 | rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444, |
f86dcef8 LG |
2776 | rtd->debugfs_dpcm_root, |
2777 | rtd, &dpcm_state_fops); | |
2778 | ||
2779 | return 0; | |
2780 | } | |
2781 | #endif |