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ed517582 KM |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // soc-pcm.c -- ALSA SoC PCM | |
4 | // | |
5 | // Copyright 2005 Wolfson Microelectronics PLC. | |
6 | // Copyright 2005 Openedhand Ltd. | |
7 | // Copyright (C) 2010 Slimlogic Ltd. | |
8 | // Copyright (C) 2010 Texas Instruments Inc. | |
9 | // | |
10 | // Authors: Liam Girdwood <lrg@ti.com> | |
11 | // Mark Brown <broonie@opensource.wolfsonmicro.com> | |
ddee627c LG |
12 | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/delay.h> | |
988e8cc4 | 16 | #include <linux/pinctrl/consumer.h> |
ddee627c LG |
17 | #include <linux/slab.h> |
18 | #include <linux/workqueue.h> | |
01d7584c | 19 | #include <linux/export.h> |
f86dcef8 | 20 | #include <linux/debugfs.h> |
ddee627c LG |
21 | #include <sound/core.h> |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
01d7584c | 25 | #include <sound/soc-dpcm.h> |
a5e6c109 | 26 | #include <sound/soc-link.h> |
ddee627c LG |
27 | #include <sound/initval.h> |
28 | ||
04110728 KM |
29 | #define soc_pcm_ret(rtd, ret) _soc_pcm_ret(rtd, __func__, ret) |
30 | static inline int _soc_pcm_ret(struct snd_soc_pcm_runtime *rtd, | |
31 | const char *func, int ret) | |
32 | { | |
33 | /* Positive, Zero values are not errors */ | |
34 | if (ret >= 0) | |
35 | return ret; | |
36 | ||
37 | /* Negative values might be errors */ | |
38 | switch (ret) { | |
39 | case -EPROBE_DEFER: | |
40 | case -ENOTSUPP: | |
1f566435 | 41 | case -EINVAL: |
04110728 KM |
42 | break; |
43 | default: | |
44 | dev_err(rtd->dev, | |
45 | "ASoC: error at %s on %s: %d\n", | |
46 | func, rtd->dai_link->name, ret); | |
47 | } | |
48 | ||
49 | return ret; | |
50 | } | |
51 | ||
b7898396 TI |
52 | static inline void snd_soc_dpcm_stream_lock_irq(struct snd_soc_pcm_runtime *rtd, |
53 | int stream) | |
54 | { | |
55 | snd_pcm_stream_lock_irq(snd_soc_dpcm_get_substream(rtd, stream)); | |
56 | } | |
57 | ||
3c75c0ea TI |
58 | #define snd_soc_dpcm_stream_lock_irqsave_nested(rtd, stream, flags) \ |
59 | snd_pcm_stream_lock_irqsave_nested(snd_soc_dpcm_get_substream(rtd, stream), flags) | |
b2ae8066 | 60 | |
b7898396 TI |
61 | static inline void snd_soc_dpcm_stream_unlock_irq(struct snd_soc_pcm_runtime *rtd, |
62 | int stream) | |
63 | { | |
64 | snd_pcm_stream_unlock_irq(snd_soc_dpcm_get_substream(rtd, stream)); | |
65 | } | |
66 | ||
b2ae8066 TI |
67 | #define snd_soc_dpcm_stream_unlock_irqrestore(rtd, stream, flags) \ |
68 | snd_pcm_stream_unlock_irqrestore(snd_soc_dpcm_get_substream(rtd, stream), flags) | |
69 | ||
01d7584c LG |
70 | #define DPCM_MAX_BE_USERS 8 |
71 | ||
6fb8944c KM |
72 | static inline const char *soc_cpu_dai_name(struct snd_soc_pcm_runtime *rtd) |
73 | { | |
3989ade2 | 74 | return (rtd)->dai_link->num_cpus == 1 ? asoc_rtd_to_cpu(rtd, 0)->name : "multicpu"; |
6fb8944c KM |
75 | } |
76 | static inline const char *soc_codec_dai_name(struct snd_soc_pcm_runtime *rtd) | |
77 | { | |
3989ade2 | 78 | return (rtd)->dai_link->num_codecs == 1 ? asoc_rtd_to_codec(rtd, 0)->name : "multicodec"; |
6fb8944c KM |
79 | } |
80 | ||
c3212829 KM |
81 | #ifdef CONFIG_DEBUG_FS |
82 | static const char *dpcm_state_string(enum snd_soc_dpcm_state state) | |
83 | { | |
84 | switch (state) { | |
85 | case SND_SOC_DPCM_STATE_NEW: | |
86 | return "new"; | |
87 | case SND_SOC_DPCM_STATE_OPEN: | |
88 | return "open"; | |
89 | case SND_SOC_DPCM_STATE_HW_PARAMS: | |
90 | return "hw_params"; | |
91 | case SND_SOC_DPCM_STATE_PREPARE: | |
92 | return "prepare"; | |
93 | case SND_SOC_DPCM_STATE_START: | |
94 | return "start"; | |
95 | case SND_SOC_DPCM_STATE_STOP: | |
96 | return "stop"; | |
97 | case SND_SOC_DPCM_STATE_SUSPEND: | |
98 | return "suspend"; | |
99 | case SND_SOC_DPCM_STATE_PAUSED: | |
100 | return "paused"; | |
101 | case SND_SOC_DPCM_STATE_HW_FREE: | |
102 | return "hw_free"; | |
103 | case SND_SOC_DPCM_STATE_CLOSE: | |
104 | return "close"; | |
105 | } | |
106 | ||
107 | return "unknown"; | |
108 | } | |
109 | ||
110 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, | |
111 | int stream, char *buf, size_t size) | |
112 | { | |
113 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; | |
114 | struct snd_soc_dpcm *dpcm; | |
115 | ssize_t offset = 0; | |
c3212829 KM |
116 | |
117 | /* FE state */ | |
d0c9abb8 | 118 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
119 | "[%s - %s]\n", fe->dai_link->name, |
120 | stream ? "Capture" : "Playback"); | |
121 | ||
d0c9abb8 | 122 | offset += scnprintf(buf + offset, size - offset, "State: %s\n", |
c3212829 KM |
123 | dpcm_state_string(fe->dpcm[stream].state)); |
124 | ||
125 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
126 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
d0c9abb8 | 127 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
128 | "Hardware Params: " |
129 | "Format = %s, Channels = %d, Rate = %d\n", | |
130 | snd_pcm_format_name(params_format(params)), | |
131 | params_channels(params), | |
132 | params_rate(params)); | |
133 | ||
134 | /* BEs state */ | |
d0c9abb8 | 135 | offset += scnprintf(buf + offset, size - offset, "Backends:\n"); |
c3212829 KM |
136 | |
137 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
d0c9abb8 | 138 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
139 | " No active DSP links\n"); |
140 | goto out; | |
141 | } | |
142 | ||
c3212829 KM |
143 | for_each_dpcm_be(fe, stream, dpcm) { |
144 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
25106550 | 145 | params = &be->dpcm[stream].hw_params; |
c3212829 | 146 | |
d0c9abb8 | 147 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
148 | "- %s\n", be->dai_link->name); |
149 | ||
d0c9abb8 | 150 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
151 | " State: %s\n", |
152 | dpcm_state_string(be->dpcm[stream].state)); | |
153 | ||
154 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && | |
155 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) | |
d0c9abb8 | 156 | offset += scnprintf(buf + offset, size - offset, |
c3212829 KM |
157 | " Hardware Params: " |
158 | "Format = %s, Channels = %d, Rate = %d\n", | |
159 | snd_pcm_format_name(params_format(params)), | |
160 | params_channels(params), | |
161 | params_rate(params)); | |
162 | } | |
c3212829 KM |
163 | out: |
164 | return offset; | |
165 | } | |
166 | ||
167 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, | |
168 | size_t count, loff_t *ppos) | |
169 | { | |
170 | struct snd_soc_pcm_runtime *fe = file->private_data; | |
171 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; | |
172 | int stream; | |
173 | char *buf; | |
174 | ||
3989ade2 | 175 | if (fe->dai_link->num_cpus > 1) { |
6e1276a5 BL |
176 | dev_err(fe->dev, |
177 | "%s doesn't support Multi CPU yet\n", __func__); | |
178 | return -EINVAL; | |
179 | } | |
180 | ||
c3212829 KM |
181 | buf = kmalloc(out_count, GFP_KERNEL); |
182 | if (!buf) | |
183 | return -ENOMEM; | |
184 | ||
b7898396 | 185 | snd_soc_dpcm_mutex_lock(fe); |
c3212829 | 186 | for_each_pcm_streams(stream) |
c2233a26 | 187 | if (snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream)) |
c3212829 KM |
188 | offset += dpcm_show_state(fe, stream, |
189 | buf + offset, | |
190 | out_count - offset); | |
b7898396 | 191 | snd_soc_dpcm_mutex_unlock(fe); |
c3212829 KM |
192 | |
193 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); | |
194 | ||
195 | kfree(buf); | |
196 | return ret; | |
197 | } | |
198 | ||
199 | static const struct file_operations dpcm_state_fops = { | |
200 | .open = simple_open, | |
201 | .read = dpcm_state_read_file, | |
202 | .llseek = default_llseek, | |
203 | }; | |
204 | ||
205 | void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) | |
206 | { | |
c3212829 KM |
207 | if (!rtd->dai_link->dynamic) |
208 | return; | |
209 | ||
210 | if (!rtd->card->debugfs_card_root) | |
211 | return; | |
212 | ||
213 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, | |
214 | rtd->card->debugfs_card_root); | |
215 | ||
216 | debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root, | |
217 | rtd, &dpcm_state_fops); | |
218 | } | |
154dae87 KM |
219 | |
220 | static void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, int stream) | |
221 | { | |
222 | char *name; | |
223 | ||
224 | name = kasprintf(GFP_KERNEL, "%s:%s", dpcm->be->dai_link->name, | |
225 | stream ? "capture" : "playback"); | |
226 | if (name) { | |
227 | dpcm->debugfs_state = debugfs_create_dir( | |
228 | name, dpcm->fe->debugfs_dpcm_root); | |
229 | debugfs_create_u32("state", 0644, dpcm->debugfs_state, | |
230 | &dpcm->state); | |
231 | kfree(name); | |
232 | } | |
233 | } | |
234 | ||
235 | static void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) | |
236 | { | |
237 | debugfs_remove_recursive(dpcm->debugfs_state); | |
238 | } | |
239 | ||
240 | #else | |
241 | static inline void dpcm_create_debugfs_state(struct snd_soc_dpcm *dpcm, | |
242 | int stream) | |
243 | { | |
244 | } | |
245 | ||
246 | static inline void dpcm_remove_debugfs_state(struct snd_soc_dpcm *dpcm) | |
247 | { | |
248 | } | |
c3212829 KM |
249 | #endif |
250 | ||
9c6d7f93 KM |
251 | /* Set FE's runtime_update state; the state is protected via PCM stream lock |
252 | * for avoiding the race with trigger callback. | |
253 | * If the state is unset and a trigger is pending while the previous operation, | |
254 | * process the pending trigger action here. | |
255 | */ | |
256 | static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); | |
257 | static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe, | |
258 | int stream, enum snd_soc_dpcm_update state) | |
259 | { | |
260 | struct snd_pcm_substream *substream = | |
261 | snd_soc_dpcm_get_substream(fe, stream); | |
262 | ||
b7898396 | 263 | snd_soc_dpcm_stream_lock_irq(fe, stream); |
9c6d7f93 KM |
264 | if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) { |
265 | dpcm_fe_dai_do_trigger(substream, | |
266 | fe->dpcm[stream].trigger_pending - 1); | |
267 | fe->dpcm[stream].trigger_pending = 0; | |
268 | } | |
269 | fe->dpcm[stream].runtime_update = state; | |
b7898396 | 270 | snd_soc_dpcm_stream_unlock_irq(fe, stream); |
9c6d7f93 KM |
271 | } |
272 | ||
a7e20444 KM |
273 | static void dpcm_set_be_update_state(struct snd_soc_pcm_runtime *be, |
274 | int stream, enum snd_soc_dpcm_update state) | |
275 | { | |
276 | be->dpcm[stream].runtime_update = state; | |
277 | } | |
278 | ||
d9051d86 KM |
279 | /** |
280 | * snd_soc_runtime_action() - Increment/Decrement active count for | |
281 | * PCM runtime components | |
282 | * @rtd: ASoC PCM runtime that is activated | |
283 | * @stream: Direction of the PCM stream | |
b6d6e9ea | 284 | * @action: Activate stream if 1. Deactivate if -1. |
d9051d86 KM |
285 | * |
286 | * Increments/Decrements the active count for all the DAIs and components | |
287 | * attached to a PCM runtime. | |
288 | * Should typically be called when a stream is opened. | |
289 | * | |
290 | * Must be called with the rtd->card->pcm_mutex being held | |
291 | */ | |
292 | void snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd, | |
293 | int stream, int action) | |
24894b76 | 294 | { |
c840f769 | 295 | struct snd_soc_dai *dai; |
2e5894d7 | 296 | int i; |
24894b76 | 297 | |
b7898396 | 298 | snd_soc_dpcm_mutex_assert_held(rtd); |
24894b76 | 299 | |
dc829106 KM |
300 | for_each_rtd_dais(rtd, i, dai) |
301 | snd_soc_dai_action(dai, stream, action); | |
24894b76 | 302 | } |
d9051d86 | 303 | EXPORT_SYMBOL_GPL(snd_soc_runtime_action); |
24894b76 | 304 | |
208a1589 LPC |
305 | /** |
306 | * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay | |
307 | * @rtd: The ASoC PCM runtime that should be checked. | |
308 | * | |
309 | * This function checks whether the power down delay should be ignored for a | |
310 | * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has | |
311 | * been configured to ignore the delay, or if none of the components benefits | |
312 | * from having the delay. | |
313 | */ | |
314 | bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) | |
315 | { | |
fbb16563 | 316 | struct snd_soc_component *component; |
2e5894d7 | 317 | bool ignore = true; |
613fb500 | 318 | int i; |
2e5894d7 | 319 | |
208a1589 LPC |
320 | if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) |
321 | return true; | |
322 | ||
613fb500 | 323 | for_each_rtd_components(rtd, i, component) |
72c38184 | 324 | ignore &= !component->driver->use_pmdown_time; |
fbb16563 | 325 | |
fbb16563 | 326 | return ignore; |
208a1589 LPC |
327 | } |
328 | ||
90996f43 LPC |
329 | /** |
330 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
331 | * @substream: the pcm substream | |
332 | * @hw: the hardware parameters | |
333 | * | |
334 | * Sets the substream runtime hardware parameters. | |
335 | */ | |
336 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
337 | const struct snd_pcm_hardware *hw) | |
338 | { | |
56e749ba KM |
339 | substream->runtime->hw = *hw; |
340 | ||
90996f43 LPC |
341 | return 0; |
342 | } | |
343 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
344 | ||
01d7584c | 345 | /* DPCM stream event, send event to FE and all active BEs. */ |
23607025 | 346 | int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, |
01d7584c LG |
347 | int event) |
348 | { | |
349 | struct snd_soc_dpcm *dpcm; | |
350 | ||
b7898396 TI |
351 | snd_soc_dpcm_mutex_assert_held(fe); |
352 | ||
8d6258a4 | 353 | for_each_dpcm_be(fe, dir, dpcm) { |
01d7584c LG |
354 | |
355 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
356 | ||
103d84a3 | 357 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
01d7584c LG |
358 | be->dai_link->name, event, dir); |
359 | ||
b1cd2e34 BG |
360 | if ((event == SND_SOC_DAPM_STREAM_STOP) && |
361 | (be->dpcm[dir].users >= 1)) | |
362 | continue; | |
363 | ||
01d7584c LG |
364 | snd_soc_dapm_stream_event(be, dir, event); |
365 | } | |
366 | ||
367 | snd_soc_dapm_stream_event(fe, dir, event); | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
2805b8bd KM |
372 | static void soc_pcm_set_dai_params(struct snd_soc_dai *dai, |
373 | struct snd_pcm_hw_params *params) | |
374 | { | |
375 | if (params) { | |
376 | dai->rate = params_rate(params); | |
377 | dai->channels = params_channels(params); | |
378 | dai->sample_bits = snd_pcm_format_physical_width(params_format(params)); | |
379 | } else { | |
380 | dai->rate = 0; | |
381 | dai->channels = 0; | |
382 | dai->sample_bits = 0; | |
383 | } | |
384 | } | |
385 | ||
17841020 DA |
386 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
387 | struct snd_soc_dai *soc_dai) | |
ddee627c | 388 | { |
0ceef681 | 389 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
ddee627c LG |
390 | int ret; |
391 | ||
f8fc9ec5 KM |
392 | if (!snd_soc_dai_active(soc_dai)) |
393 | return 0; | |
394 | ||
fac110cb KM |
395 | #define __soc_pcm_apply_symmetry(name, NAME) \ |
396 | if (soc_dai->name && (soc_dai->driver->symmetric_##name || \ | |
397 | rtd->dai_link->symmetric_##name)) { \ | |
398 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %s to %d\n",\ | |
399 | #name, soc_dai->name); \ | |
400 | \ | |
401 | ret = snd_pcm_hw_constraint_single(substream->runtime, \ | |
402 | SNDRV_PCM_HW_PARAM_##NAME,\ | |
403 | soc_dai->name); \ | |
404 | if (ret < 0) { \ | |
405 | dev_err(soc_dai->dev, \ | |
406 | "ASoC: Unable to apply %s constraint: %d\n",\ | |
407 | #name, ret); \ | |
408 | return ret; \ | |
409 | } \ | |
3635bf09 | 410 | } |
ddee627c | 411 | |
fac110cb KM |
412 | __soc_pcm_apply_symmetry(rate, RATE); |
413 | __soc_pcm_apply_symmetry(channels, CHANNELS); | |
414 | __soc_pcm_apply_symmetry(sample_bits, SAMPLE_BITS); | |
ddee627c LG |
415 | |
416 | return 0; | |
417 | } | |
418 | ||
3635bf09 NC |
419 | static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, |
420 | struct snd_pcm_hw_params *params) | |
421 | { | |
0ceef681 | 422 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
2805b8bd | 423 | struct snd_soc_dai d; |
c840f769 | 424 | struct snd_soc_dai *dai; |
19bdcc7a | 425 | struct snd_soc_dai *cpu_dai; |
2805b8bd | 426 | unsigned int symmetry, i; |
3635bf09 | 427 | |
ee39d77e | 428 | d.name = __func__; |
2805b8bd | 429 | soc_pcm_set_dai_params(&d, params); |
3635bf09 | 430 | |
1cacbac4 KM |
431 | #define __soc_pcm_params_symmetry(xxx) \ |
432 | symmetry = rtd->dai_link->symmetric_##xxx; \ | |
3a906721 | 433 | for_each_rtd_dais(rtd, i, dai) \ |
1cacbac4 | 434 | symmetry |= dai->driver->symmetric_##xxx; \ |
3a906721 KM |
435 | \ |
436 | if (symmetry) \ | |
437 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) \ | |
9c2ae363 KM |
438 | if (!snd_soc_dai_is_dummy(cpu_dai) && \ |
439 | cpu_dai->xxx && cpu_dai->xxx != d.xxx) { \ | |
ee39d77e KM |
440 | dev_err(rtd->dev, "ASoC: unmatched %s symmetry: %s:%d - %s:%d\n", \ |
441 | #xxx, cpu_dai->name, cpu_dai->xxx, d.name, d.xxx); \ | |
3a906721 | 442 | return -EINVAL; \ |
19bdcc7a | 443 | } |
ddee627c | 444 | |
3a906721 KM |
445 | /* reject unmatched parameters when applying symmetry */ |
446 | __soc_pcm_params_symmetry(rate); | |
447 | __soc_pcm_params_symmetry(channels); | |
448 | __soc_pcm_params_symmetry(sample_bits); | |
ddee627c LG |
449 | |
450 | return 0; | |
451 | } | |
452 | ||
68cbc557 | 453 | static void soc_pcm_update_symmetry(struct snd_pcm_substream *substream) |
62e5f676 | 454 | { |
0ceef681 | 455 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
62e5f676 | 456 | struct snd_soc_dai_link *link = rtd->dai_link; |
c840f769 | 457 | struct snd_soc_dai *dai; |
2e5894d7 | 458 | unsigned int symmetry, i; |
62e5f676 | 459 | |
f14654dd | 460 | symmetry = link->symmetric_rate || |
19bdcc7a | 461 | link->symmetric_channels || |
f14654dd | 462 | link->symmetric_sample_bits; |
19bdcc7a | 463 | |
c840f769 | 464 | for_each_rtd_dais(rtd, i, dai) |
2e5894d7 | 465 | symmetry = symmetry || |
f14654dd | 466 | dai->driver->symmetric_rate || |
c840f769 | 467 | dai->driver->symmetric_channels || |
f14654dd | 468 | dai->driver->symmetric_sample_bits; |
2e5894d7 | 469 | |
68cbc557 KM |
470 | if (symmetry) |
471 | substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; | |
62e5f676 LPC |
472 | } |
473 | ||
2e5894d7 | 474 | static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) |
58ba9b25 | 475 | { |
0ceef681 | 476 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
c6068d3a | 477 | int ret; |
58ba9b25 MB |
478 | |
479 | if (!bits) | |
480 | return; | |
481 | ||
0e2a3751 LPC |
482 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits); |
483 | if (ret != 0) | |
484 | dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n", | |
485 | bits, ret); | |
58ba9b25 MB |
486 | } |
487 | ||
c8dd1fec BC |
488 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) |
489 | { | |
0ceef681 | 490 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
19bdcc7a | 491 | struct snd_soc_dai *cpu_dai; |
2e5894d7 | 492 | struct snd_soc_dai *codec_dai; |
57be9206 | 493 | int stream = substream->stream; |
2e5894d7 | 494 | int i; |
19bdcc7a | 495 | unsigned int bits = 0, cpu_bits = 0; |
c8dd1fec | 496 | |
a4be4187 | 497 | for_each_rtd_codec_dais(rtd, i, codec_dai) { |
2bc3e1f2 | 498 | struct snd_soc_pcm_stream *pcm_codec = snd_soc_dai_get_pcm_stream(codec_dai, stream); |
57be9206 KM |
499 | |
500 | if (pcm_codec->sig_bits == 0) { | |
501 | bits = 0; | |
502 | break; | |
2e5894d7 | 503 | } |
57be9206 | 504 | bits = max(pcm_codec->sig_bits, bits); |
c8dd1fec BC |
505 | } |
506 | ||
a4be4187 | 507 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
2bc3e1f2 | 508 | struct snd_soc_pcm_stream *pcm_cpu = snd_soc_dai_get_pcm_stream(cpu_dai, stream); |
19bdcc7a SN |
509 | |
510 | if (pcm_cpu->sig_bits == 0) { | |
511 | cpu_bits = 0; | |
512 | break; | |
513 | } | |
514 | cpu_bits = max(pcm_cpu->sig_bits, cpu_bits); | |
515 | } | |
57be9206 | 516 | |
2e5894d7 BC |
517 | soc_pcm_set_msb(substream, bits); |
518 | soc_pcm_set_msb(substream, cpu_bits); | |
c8dd1fec BC |
519 | } |
520 | ||
f6c04af5 KM |
521 | static void soc_pcm_hw_init(struct snd_pcm_hardware *hw) |
522 | { | |
523 | hw->rates = UINT_MAX; | |
524 | hw->rate_min = 0; | |
525 | hw->rate_max = UINT_MAX; | |
6cb56a45 KM |
526 | hw->channels_min = 0; |
527 | hw->channels_max = UINT_MAX; | |
debc71f2 | 528 | hw->formats = ULLONG_MAX; |
f6c04af5 KM |
529 | } |
530 | ||
531 | static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw, | |
532 | struct snd_soc_pcm_stream *p) | |
533 | { | |
534 | hw->rates = snd_pcm_rate_mask_intersect(hw->rates, p->rates); | |
535 | ||
536 | /* setup hw->rate_min/max via hw->rates first */ | |
537 | snd_pcm_hw_limit_rates(hw); | |
538 | ||
539 | /* update hw->rate_min/max by snd_soc_pcm_stream */ | |
540 | hw->rate_min = max(hw->rate_min, p->rate_min); | |
541 | hw->rate_max = min_not_zero(hw->rate_max, p->rate_max); | |
542 | } | |
543 | ||
6cb56a45 KM |
544 | static void soc_pcm_hw_update_chan(struct snd_pcm_hardware *hw, |
545 | struct snd_soc_pcm_stream *p) | |
546 | { | |
547 | hw->channels_min = max(hw->channels_min, p->channels_min); | |
548 | hw->channels_max = min(hw->channels_max, p->channels_max); | |
549 | } | |
550 | ||
debc71f2 KM |
551 | static void soc_pcm_hw_update_format(struct snd_pcm_hardware *hw, |
552 | struct snd_soc_pcm_stream *p) | |
553 | { | |
554 | hw->formats &= p->formats; | |
555 | } | |
556 | ||
5854a464 SH |
557 | /** |
558 | * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream | |
559 | * @rtd: ASoC PCM runtime | |
560 | * @hw: PCM hardware parameters (output) | |
561 | * @stream: Direction of the PCM stream | |
562 | * | |
563 | * Calculates the subset of stream parameters supported by all DAIs | |
564 | * associated with the PCM stream. | |
565 | */ | |
566 | int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, | |
567 | struct snd_pcm_hardware *hw, int stream) | |
bd477c31 | 568 | { |
0b7990e3 | 569 | struct snd_soc_dai *codec_dai; |
19bdcc7a | 570 | struct snd_soc_dai *cpu_dai; |
2e5894d7 BC |
571 | struct snd_soc_pcm_stream *codec_stream; |
572 | struct snd_soc_pcm_stream *cpu_stream; | |
19bdcc7a | 573 | unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX; |
2e5894d7 | 574 | int i; |
78e45c99 | 575 | |
f6c04af5 KM |
576 | soc_pcm_hw_init(hw); |
577 | ||
19bdcc7a | 578 | /* first calculate min/max only for CPUs in the DAI link */ |
a4be4187 | 579 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
0e9cf4c4 BL |
580 | |
581 | /* | |
582 | * Skip CPUs which don't support the current stream type. | |
583 | * Otherwise, since the rate, channel, and format values will | |
584 | * zero in that case, we would have no usable settings left, | |
585 | * causing the resulting setup to fail. | |
0e9cf4c4 | 586 | */ |
5854a464 | 587 | if (!snd_soc_dai_stream_valid(cpu_dai, stream)) |
0e9cf4c4 BL |
588 | continue; |
589 | ||
19bdcc7a SN |
590 | cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream); |
591 | ||
6cb56a45 | 592 | soc_pcm_hw_update_chan(hw, cpu_stream); |
f6c04af5 | 593 | soc_pcm_hw_update_rate(hw, cpu_stream); |
debc71f2 | 594 | soc_pcm_hw_update_format(hw, cpu_stream); |
19bdcc7a | 595 | } |
6cb56a45 KM |
596 | cpu_chan_min = hw->channels_min; |
597 | cpu_chan_max = hw->channels_max; | |
78e45c99 | 598 | |
19bdcc7a | 599 | /* second calculate min/max only for CODECs in the DAI link */ |
a4be4187 | 600 | for_each_rtd_codec_dais(rtd, i, codec_dai) { |
cde79035 RW |
601 | |
602 | /* | |
603 | * Skip CODECs which don't support the current stream type. | |
604 | * Otherwise, since the rate, channel, and format values will | |
605 | * zero in that case, we would have no usable settings left, | |
606 | * causing the resulting setup to fail. | |
cde79035 | 607 | */ |
25c2f515 | 608 | if (!snd_soc_dai_stream_valid(codec_dai, stream)) |
cde79035 RW |
609 | continue; |
610 | ||
acf253c1 KM |
611 | codec_stream = snd_soc_dai_get_pcm_stream(codec_dai, stream); |
612 | ||
6cb56a45 | 613 | soc_pcm_hw_update_chan(hw, codec_stream); |
f6c04af5 | 614 | soc_pcm_hw_update_rate(hw, codec_stream); |
debc71f2 | 615 | soc_pcm_hw_update_format(hw, codec_stream); |
2e5894d7 BC |
616 | } |
617 | ||
5854a464 | 618 | /* Verify both a valid CPU DAI and a valid CODEC DAI were found */ |
6cb56a45 | 619 | if (!hw->channels_min) |
5854a464 SH |
620 | return -EINVAL; |
621 | ||
2e5894d7 BC |
622 | /* |
623 | * chan min/max cannot be enforced if there are multiple CODEC DAIs | |
19bdcc7a | 624 | * connected to CPU DAI(s), use CPU DAI's directly and let |
2e5894d7 BC |
625 | * channel allocation be fixed up later |
626 | */ | |
3989ade2 | 627 | if (rtd->dai_link->num_codecs > 1) { |
6cb56a45 KM |
628 | hw->channels_min = cpu_chan_min; |
629 | hw->channels_max = cpu_chan_max; | |
2e5894d7 BC |
630 | } |
631 | ||
5854a464 SH |
632 | return 0; |
633 | } | |
634 | EXPORT_SYMBOL_GPL(snd_soc_runtime_calc_hw); | |
635 | ||
636 | static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) | |
637 | { | |
638 | struct snd_pcm_hardware *hw = &substream->runtime->hw; | |
0ceef681 | 639 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
5854a464 SH |
640 | u64 formats = hw->formats; |
641 | ||
642 | /* | |
643 | * At least one CPU and one CODEC should match. Otherwise, we should | |
644 | * have bailed out on a higher level, since there would be no CPU or | |
645 | * CODEC to support the transfer direction in that case. | |
646 | */ | |
647 | snd_soc_runtime_calc_hw(rtd, hw, substream->stream); | |
648 | ||
649 | if (formats) | |
650 | hw->formats &= formats; | |
bd477c31 LPC |
651 | } |
652 | ||
dd03907b | 653 | static int soc_pcm_components_open(struct snd_pcm_substream *substream) |
e7ecfdb7 | 654 | { |
0ceef681 | 655 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
e7ecfdb7 | 656 | struct snd_soc_component *component; |
613fb500 | 657 | int i, ret = 0; |
e7ecfdb7 | 658 | |
613fb500 | 659 | for_each_rtd_components(rtd, i, component) { |
51aff91a | 660 | ret = snd_soc_component_module_get_when_open(component, substream); |
bcae1631 | 661 | if (ret < 0) |
d2aaa8d8 | 662 | break; |
e7ecfdb7 | 663 | |
ae2f4849 | 664 | ret = snd_soc_component_open(component, substream); |
bcae1631 | 665 | if (ret < 0) |
d2aaa8d8 | 666 | break; |
e7ecfdb7 | 667 | } |
dd03907b | 668 | |
d2aaa8d8 | 669 | return ret; |
e7ecfdb7 KM |
670 | } |
671 | ||
51aff91a KM |
672 | static int soc_pcm_components_close(struct snd_pcm_substream *substream, |
673 | int rollback) | |
244e2936 | 674 | { |
0ceef681 | 675 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
244e2936 | 676 | struct snd_soc_component *component; |
33be10b5 | 677 | int i, ret = 0; |
244e2936 | 678 | |
613fb500 | 679 | for_each_rtd_components(rtd, i, component) { |
33be10b5 | 680 | int r = snd_soc_component_close(component, substream, rollback); |
e82ebffc KM |
681 | if (r < 0) |
682 | ret = r; /* use last ret */ | |
683 | ||
51aff91a | 684 | snd_soc_component_module_put_when_close(component, substream, rollback); |
244e2936 CK |
685 | } |
686 | ||
3672beb8 | 687 | return ret; |
244e2936 CK |
688 | } |
689 | ||
b7898396 TI |
690 | static int soc_pcm_clean(struct snd_soc_pcm_runtime *rtd, |
691 | struct snd_pcm_substream *substream, int rollback) | |
62c86d1d | 692 | { |
62c86d1d | 693 | struct snd_soc_component *component; |
c840f769 | 694 | struct snd_soc_dai *dai; |
62c86d1d KM |
695 | int i; |
696 | ||
b7898396 | 697 | snd_soc_dpcm_mutex_assert_held(rtd); |
62c86d1d | 698 | |
1da681e5 | 699 | if (!rollback) { |
140a4532 | 700 | snd_soc_runtime_deactivate(rtd, substream->stream); |
1da681e5 CL |
701 | /* clear the corresponding DAIs parameters when going to be inactive */ |
702 | for_each_rtd_dais(rtd, i, dai) { | |
703 | if (snd_soc_dai_active(dai) == 0) | |
704 | soc_pcm_set_dai_params(dai, NULL); | |
705 | ||
706 | if (snd_soc_dai_stream_active(dai, substream->stream) == 0) | |
707 | snd_soc_dai_digital_mute(dai, 1, substream->stream); | |
708 | } | |
709 | } | |
62c86d1d | 710 | |
c840f769 | 711 | for_each_rtd_dais(rtd, i, dai) |
140a4532 | 712 | snd_soc_dai_shutdown(dai, substream, rollback); |
62c86d1d | 713 | |
140a4532 | 714 | snd_soc_link_shutdown(substream, rollback); |
62c86d1d | 715 | |
140a4532 | 716 | soc_pcm_components_close(substream, rollback); |
62c86d1d | 717 | |
140a4532 | 718 | snd_soc_pcm_component_pm_runtime_put(rtd, substream, rollback); |
62c86d1d KM |
719 | |
720 | for_each_rtd_components(rtd, i, component) | |
b3dea624 | 721 | if (!snd_soc_component_active(component)) |
62c86d1d KM |
722 | pinctrl_pm_select_sleep_state(component->dev); |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
140a4532 KM |
727 | /* |
728 | * Called by ALSA when a PCM substream is closed. Private data can be | |
729 | * freed here. The cpu DAI, codec DAI, machine and components are also | |
730 | * shutdown. | |
731 | */ | |
b7898396 TI |
732 | static int __soc_pcm_close(struct snd_soc_pcm_runtime *rtd, |
733 | struct snd_pcm_substream *substream) | |
734 | { | |
735 | return soc_pcm_clean(rtd, substream, 0); | |
736 | } | |
737 | ||
738 | /* PCM close ops for non-DPCM streams */ | |
140a4532 KM |
739 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
740 | { | |
b7898396 TI |
741 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
742 | ||
743 | snd_soc_dpcm_mutex_lock(rtd); | |
6bbabd28 | 744 | __soc_pcm_close(rtd, substream); |
b7898396 TI |
745 | snd_soc_dpcm_mutex_unlock(rtd); |
746 | return 0; | |
140a4532 KM |
747 | } |
748 | ||
c393281a KM |
749 | static int soc_hw_sanity_check(struct snd_pcm_substream *substream) |
750 | { | |
751 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); | |
752 | struct snd_pcm_hardware *hw = &substream->runtime->hw; | |
753 | const char *name_cpu = soc_cpu_dai_name(rtd); | |
754 | const char *name_codec = soc_codec_dai_name(rtd); | |
755 | const char *err_msg; | |
756 | struct device *dev = rtd->dev; | |
757 | ||
758 | err_msg = "rates"; | |
759 | if (!hw->rates) | |
760 | goto config_err; | |
761 | ||
762 | err_msg = "formats"; | |
763 | if (!hw->formats) | |
764 | goto config_err; | |
765 | ||
766 | err_msg = "channels"; | |
767 | if (!hw->channels_min || !hw->channels_max || | |
768 | hw->channels_min > hw->channels_max) | |
769 | goto config_err; | |
770 | ||
771 | dev_dbg(dev, "ASoC: %s <-> %s info:\n", name_codec, | |
772 | name_cpu); | |
773 | dev_dbg(dev, "ASoC: rate mask 0x%x\n", hw->rates); | |
774 | dev_dbg(dev, "ASoC: ch min %d max %d\n", hw->channels_min, | |
775 | hw->channels_max); | |
776 | dev_dbg(dev, "ASoC: rate min %d max %d\n", hw->rate_min, | |
777 | hw->rate_max); | |
778 | ||
779 | return 0; | |
780 | ||
781 | config_err: | |
782 | dev_err(dev, "ASoC: %s <-> %s No matching %s\n", | |
783 | name_codec, name_cpu, err_msg); | |
784 | return -EINVAL; | |
785 | } | |
786 | ||
ddee627c LG |
787 | /* |
788 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
789 | * then initialized and any private data can be allocated. This also calls | |
ef050bec | 790 | * startup for the cpu DAI, component, machine and codec DAI. |
ddee627c | 791 | */ |
b7898396 TI |
792 | static int __soc_pcm_open(struct snd_soc_pcm_runtime *rtd, |
793 | struct snd_pcm_substream *substream) | |
ddee627c | 794 | { |
90be711e | 795 | struct snd_soc_component *component; |
c840f769 | 796 | struct snd_soc_dai *dai; |
244e2936 | 797 | int i, ret = 0; |
ddee627c | 798 | |
b7898396 TI |
799 | snd_soc_dpcm_mutex_assert_held(rtd); |
800 | ||
76c39e86 KM |
801 | for_each_rtd_components(rtd, i, component) |
802 | pinctrl_pm_select_default_state(component->dev); | |
90be711e | 803 | |
939a5cfb KM |
804 | ret = snd_soc_pcm_component_pm_runtime_get(rtd, substream); |
805 | if (ret < 0) | |
b7898396 | 806 | goto err; |
ddee627c | 807 | |
5d9fa03e KM |
808 | ret = soc_pcm_components_open(substream); |
809 | if (ret < 0) | |
140a4532 | 810 | goto err; |
5d9fa03e | 811 | |
7cf3c5b4 | 812 | ret = snd_soc_link_startup(substream); |
a5e6c109 | 813 | if (ret < 0) |
140a4532 | 814 | goto err; |
5d9fa03e | 815 | |
ddee627c | 816 | /* startup the audio subsystem */ |
c840f769 KM |
817 | for_each_rtd_dais(rtd, i, dai) { |
818 | ret = snd_soc_dai_startup(dai, substream); | |
ce820145 | 819 | if (ret < 0) |
140a4532 | 820 | goto err; |
ddee627c LG |
821 | } |
822 | ||
01d7584c LG |
823 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
824 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) | |
825 | goto dynamic; | |
826 | ||
ddee627c | 827 | /* Check that the codec and cpu DAIs are compatible */ |
2e5894d7 BC |
828 | soc_pcm_init_runtime_hw(substream); |
829 | ||
68cbc557 | 830 | soc_pcm_update_symmetry(substream); |
62e5f676 | 831 | |
c393281a KM |
832 | ret = soc_hw_sanity_check(substream); |
833 | if (ret < 0) | |
140a4532 | 834 | goto err; |
ddee627c | 835 | |
c8dd1fec | 836 | soc_pcm_apply_msb(substream); |
58ba9b25 | 837 | |
ddee627c | 838 | /* Symmetry only applies if we've already got an active stream. */ |
c840f769 | 839 | for_each_rtd_dais(rtd, i, dai) { |
f8fc9ec5 KM |
840 | ret = soc_pcm_apply_symmetry(substream, dai); |
841 | if (ret != 0) | |
842 | goto err; | |
ddee627c | 843 | } |
01d7584c | 844 | dynamic: |
24894b76 | 845 | snd_soc_runtime_activate(rtd, substream->stream); |
8e7875ae | 846 | ret = 0; |
140a4532 | 847 | err: |
04110728 | 848 | if (ret < 0) |
b7898396 | 849 | soc_pcm_clean(rtd, substream, 1); |
d6652ef8 | 850 | |
04110728 | 851 | return soc_pcm_ret(rtd, ret); |
ddee627c LG |
852 | } |
853 | ||
b7898396 TI |
854 | /* PCM open ops for non-DPCM streams */ |
855 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
856 | { | |
857 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); | |
858 | int ret; | |
859 | ||
860 | snd_soc_dpcm_mutex_lock(rtd); | |
861 | ret = __soc_pcm_open(rtd, substream); | |
862 | snd_soc_dpcm_mutex_unlock(rtd); | |
863 | return ret; | |
864 | } | |
865 | ||
ddee627c LG |
866 | /* |
867 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
868 | * rate, etc. This function is non atomic and can be called multiple times, | |
869 | * it can refer to the runtime info. | |
870 | */ | |
b7898396 TI |
871 | static int __soc_pcm_prepare(struct snd_soc_pcm_runtime *rtd, |
872 | struct snd_pcm_substream *substream) | |
ddee627c | 873 | { |
c840f769 | 874 | struct snd_soc_dai *dai; |
2e5894d7 | 875 | int i, ret = 0; |
ddee627c | 876 | |
b7898396 | 877 | snd_soc_dpcm_mutex_assert_held(rtd); |
ddee627c | 878 | |
7cf3c5b4 | 879 | ret = snd_soc_link_prepare(substream); |
a5e6c109 | 880 | if (ret < 0) |
44c1a75b | 881 | goto out; |
ddee627c | 882 | |
4f39514f KM |
883 | ret = snd_soc_pcm_component_prepare(substream); |
884 | if (ret < 0) | |
885 | goto out; | |
b8135864 | 886 | |
d108c7fd | 887 | ret = snd_soc_pcm_dai_prepare(substream); |
62462e01 | 888 | if (ret < 0) |
d108c7fd | 889 | goto out; |
4beb8e10 | 890 | |
ddee627c LG |
891 | /* cancel any delayed stream shutdown that is pending */ |
892 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
9bffb1fb MLC |
893 | rtd->pop_wait) { |
894 | rtd->pop_wait = 0; | |
ddee627c LG |
895 | cancel_delayed_work(&rtd->delayed_work); |
896 | } | |
897 | ||
d9b0951b LG |
898 | snd_soc_dapm_stream_event(rtd, substream->stream, |
899 | SND_SOC_DAPM_STREAM_START); | |
ddee627c | 900 | |
c840f769 KM |
901 | for_each_rtd_dais(rtd, i, dai) |
902 | snd_soc_dai_digital_mute(dai, 0, substream->stream); | |
ddee627c LG |
903 | |
904 | out: | |
04110728 | 905 | return soc_pcm_ret(rtd, ret); |
ddee627c LG |
906 | } |
907 | ||
b7898396 TI |
908 | /* PCM prepare ops for non-DPCM streams */ |
909 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
910 | { | |
911 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); | |
912 | int ret; | |
913 | ||
914 | snd_soc_dpcm_mutex_lock(rtd); | |
915 | ret = __soc_pcm_prepare(rtd, substream); | |
916 | snd_soc_dpcm_mutex_unlock(rtd); | |
917 | return ret; | |
918 | } | |
919 | ||
2e5894d7 BC |
920 | static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, |
921 | unsigned int mask) | |
922 | { | |
923 | struct snd_interval *interval; | |
924 | int channels = hweight_long(mask); | |
925 | ||
926 | interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
927 | interval->min = channels; | |
928 | interval->max = channels; | |
929 | } | |
930 | ||
b7898396 TI |
931 | static int soc_pcm_hw_clean(struct snd_soc_pcm_runtime *rtd, |
932 | struct snd_pcm_substream *substream, int rollback) | |
ab49436e | 933 | { |
ab49436e KM |
934 | struct snd_soc_dai *dai; |
935 | int i; | |
936 | ||
b7898396 | 937 | snd_soc_dpcm_mutex_assert_held(rtd); |
ab49436e | 938 | |
a27b421f RS |
939 | /* run the stream event */ |
940 | snd_soc_dapm_stream_stop(rtd, substream->stream); | |
941 | ||
ab49436e | 942 | /* free any machine hw params */ |
4662c596 | 943 | snd_soc_link_hw_free(substream, rollback); |
ab49436e KM |
944 | |
945 | /* free any component resources */ | |
4662c596 | 946 | snd_soc_pcm_component_hw_free(substream, rollback); |
ab49436e KM |
947 | |
948 | /* now free hw params for the DAIs */ | |
121966d0 KM |
949 | for_each_rtd_dais(rtd, i, dai) |
950 | if (snd_soc_dai_stream_valid(dai, substream->stream)) | |
951 | snd_soc_dai_hw_free(dai, substream, rollback); | |
ab49436e | 952 | |
ab49436e KM |
953 | return 0; |
954 | } | |
955 | ||
4662c596 KM |
956 | /* |
957 | * Frees resources allocated by hw_params, can be called multiple times | |
958 | */ | |
b7898396 TI |
959 | static int __soc_pcm_hw_free(struct snd_soc_pcm_runtime *rtd, |
960 | struct snd_pcm_substream *substream) | |
961 | { | |
962 | return soc_pcm_hw_clean(rtd, substream, 0); | |
963 | } | |
964 | ||
965 | /* hw_free PCM ops for non-DPCM streams */ | |
4662c596 KM |
966 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) |
967 | { | |
b7898396 TI |
968 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
969 | int ret; | |
970 | ||
971 | snd_soc_dpcm_mutex_lock(rtd); | |
972 | ret = __soc_pcm_hw_free(rtd, substream); | |
973 | snd_soc_dpcm_mutex_unlock(rtd); | |
974 | return ret; | |
4662c596 KM |
975 | } |
976 | ||
ddee627c LG |
977 | /* |
978 | * Called by ALSA when the hardware params are set by application. This | |
979 | * function can also be called multiple times and can allocate buffers | |
980 | * (using snd_pcm_lib_* ). It's non-atomic. | |
981 | */ | |
b7898396 TI |
982 | static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd, |
983 | struct snd_pcm_substream *substream, | |
984 | struct snd_pcm_hw_params *params) | |
ddee627c | 985 | { |
19bdcc7a | 986 | struct snd_soc_dai *cpu_dai; |
0b7990e3 | 987 | struct snd_soc_dai *codec_dai; |
396b9079 | 988 | struct snd_pcm_hw_params tmp_params; |
244e2936 | 989 | int i, ret = 0; |
ddee627c | 990 | |
b7898396 | 991 | snd_soc_dpcm_mutex_assert_held(rtd); |
5cca5951 SW |
992 | |
993 | ret = soc_pcm_params_symmetry(substream, params); | |
994 | if (ret) | |
995 | goto out; | |
996 | ||
7cf3c5b4 | 997 | ret = snd_soc_link_hw_params(substream, params); |
a5e6c109 | 998 | if (ret < 0) |
de9ad990 | 999 | goto out; |
ddee627c | 1000 | |
a4be4187 | 1001 | for_each_rtd_codec_dais(rtd, i, codec_dai) { |
e15ff262 | 1002 | unsigned int tdm_mask = snd_soc_dai_tdm_mask_get(codec_dai, substream->stream); |
2e5894d7 | 1003 | |
cde79035 RW |
1004 | /* |
1005 | * Skip CODECs which don't support the current stream type, | |
1006 | * the idea being that if a CODEC is not used for the currently | |
1007 | * set up transfer direction, it should not need to be | |
1008 | * configured, especially since the configuration used might | |
1009 | * not even be supported by that CODEC. There may be cases | |
1010 | * however where a CODEC needs to be set up although it is | |
1011 | * actually not being used for the transfer, e.g. if a | |
1012 | * capture-only CODEC is acting as an LRCLK and/or BCLK master | |
1013 | * for the DAI link including a playback-only CODEC. | |
1014 | * If this becomes necessary, we will have to augment the | |
1015 | * machine driver setup with information on how to act, so | |
1016 | * we can do the right thing here. | |
1017 | */ | |
1018 | if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) | |
1019 | continue; | |
1020 | ||
2e5894d7 | 1021 | /* copy params for each codec */ |
396b9079 | 1022 | tmp_params = *params; |
2e5894d7 BC |
1023 | |
1024 | /* fixup params based on TDM slot masks */ | |
e15ff262 | 1025 | if (tdm_mask) |
396b9079 | 1026 | soc_pcm_codec_params_fixup(&tmp_params, tdm_mask); |
2e5894d7 | 1027 | |
aa6166c2 | 1028 | ret = snd_soc_dai_hw_params(codec_dai, substream, |
396b9079 | 1029 | &tmp_params); |
93e6958a | 1030 | if(ret < 0) |
4662c596 | 1031 | goto out; |
ddee627c | 1032 | |
396b9079 CK |
1033 | soc_pcm_set_dai_params(codec_dai, &tmp_params); |
1034 | snd_soc_dapm_update_dai(substream, &tmp_params, codec_dai); | |
ddee627c LG |
1035 | } |
1036 | ||
a4be4187 | 1037 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
ac950278 BL |
1038 | unsigned int ch_mask = 0; |
1039 | int j; | |
1040 | ||
0e9cf4c4 BL |
1041 | /* |
1042 | * Skip CPUs which don't support the current stream | |
1043 | * type. See soc_pcm_init_runtime_hw() for more details | |
1044 | */ | |
1045 | if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) | |
1046 | continue; | |
1047 | ||
ac950278 | 1048 | /* copy params for each cpu */ |
396b9079 | 1049 | tmp_params = *params; |
ac950278 BL |
1050 | |
1051 | if (!rtd->dai_link->codec_ch_maps) | |
1052 | goto hw_params; | |
1053 | /* | |
1054 | * construct cpu channel mask by combining ch_mask of each | |
1055 | * codec which maps to the cpu. | |
1056 | */ | |
1057 | for_each_rtd_codec_dais(rtd, j, codec_dai) { | |
1058 | if (rtd->dai_link->codec_ch_maps[j].connected_cpu_id == i) | |
1059 | ch_mask |= rtd->dai_link->codec_ch_maps[j].ch_mask; | |
1060 | } | |
1061 | ||
1062 | /* fixup cpu channel number */ | |
1063 | if (ch_mask) | |
396b9079 | 1064 | soc_pcm_codec_params_fixup(&tmp_params, ch_mask); |
ac950278 BL |
1065 | |
1066 | hw_params: | |
396b9079 | 1067 | ret = snd_soc_dai_hw_params(cpu_dai, substream, &tmp_params); |
19bdcc7a | 1068 | if (ret < 0) |
4662c596 | 1069 | goto out; |
ddee627c | 1070 | |
19bdcc7a | 1071 | /* store the parameters for each DAI */ |
396b9079 CK |
1072 | soc_pcm_set_dai_params(cpu_dai, &tmp_params); |
1073 | snd_soc_dapm_update_dai(substream, &tmp_params, cpu_dai); | |
19bdcc7a | 1074 | } |
ca58221d | 1075 | |
3a36a64a | 1076 | ret = snd_soc_pcm_component_hw_params(substream, params); |
ddee627c | 1077 | out: |
04110728 | 1078 | if (ret < 0) |
b7898396 | 1079 | soc_pcm_hw_clean(rtd, substream, 1); |
ddee627c | 1080 | |
04110728 | 1081 | return soc_pcm_ret(rtd, ret); |
ddee627c LG |
1082 | } |
1083 | ||
b7898396 TI |
1084 | /* hw_params PCM ops for non-DPCM streams */ |
1085 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
1086 | struct snd_pcm_hw_params *params) | |
1087 | { | |
1088 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); | |
1089 | int ret; | |
1090 | ||
1091 | snd_soc_dpcm_mutex_lock(rtd); | |
1092 | ret = __soc_pcm_hw_params(rtd, substream, params); | |
1093 | snd_soc_dpcm_mutex_unlock(rtd); | |
1094 | return ret; | |
1095 | } | |
1096 | ||
356caf66 KM |
1097 | #define TRIGGER_MAX 3 |
1098 | static int (* const trigger[][TRIGGER_MAX])(struct snd_pcm_substream *substream, int cmd, int rollback) = { | |
1099 | [SND_SOC_TRIGGER_ORDER_DEFAULT] = { | |
1100 | snd_soc_link_trigger, | |
1101 | snd_soc_pcm_component_trigger, | |
1102 | snd_soc_pcm_dai_trigger, | |
1103 | }, | |
1104 | [SND_SOC_TRIGGER_ORDER_LDC] = { | |
1105 | snd_soc_link_trigger, | |
1106 | snd_soc_pcm_dai_trigger, | |
1107 | snd_soc_pcm_component_trigger, | |
1108 | }, | |
1109 | }; | |
1110 | ||
4378f1fb PU |
1111 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
1112 | { | |
59dd33f8 | 1113 | struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
54fc4b72 | 1114 | struct snd_soc_component *component; |
356caf66 | 1115 | int ret = 0, r = 0, i; |
6374f493 | 1116 | int rollback = 0; |
356caf66 KM |
1117 | int start = 0, stop = 0; |
1118 | ||
1119 | /* | |
1120 | * select START/STOP sequence | |
1121 | */ | |
1122 | for_each_rtd_components(rtd, i, component) { | |
1123 | if (component->driver->trigger_start) | |
1124 | start = component->driver->trigger_start; | |
1125 | if (component->driver->trigger_stop) | |
1126 | stop = component->driver->trigger_stop; | |
1127 | } | |
1128 | if (rtd->dai_link->trigger_start) | |
1129 | start = rtd->dai_link->trigger_start; | |
1130 | if (rtd->dai_link->trigger_stop) | |
1131 | stop = rtd->dai_link->trigger_stop; | |
1132 | ||
1133 | if (start < 0 || start >= SND_SOC_TRIGGER_ORDER_MAX || | |
1134 | stop < 0 || stop >= SND_SOC_TRIGGER_ORDER_MAX) | |
1135 | return -EINVAL; | |
4378f1fb | 1136 | |
356caf66 KM |
1137 | /* |
1138 | * START | |
1139 | */ | |
4378f1fb PU |
1140 | switch (cmd) { |
1141 | case SNDRV_PCM_TRIGGER_START: | |
1142 | case SNDRV_PCM_TRIGGER_RESUME: | |
1143 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
356caf66 KM |
1144 | for (i = 0; i < TRIGGER_MAX; i++) { |
1145 | r = trigger[start][i](substream, cmd, 0); | |
1146 | if (r < 0) | |
54fc4b72 | 1147 | break; |
54fc4b72 | 1148 | } |
6374f493 KM |
1149 | } |
1150 | ||
356caf66 KM |
1151 | /* |
1152 | * Rollback if START failed | |
1153 | * find correspond STOP command | |
1154 | */ | |
1155 | if (r < 0) { | |
1156 | rollback = 1; | |
1157 | ret = r; | |
6374f493 KM |
1158 | switch (cmd) { |
1159 | case SNDRV_PCM_TRIGGER_START: | |
1160 | cmd = SNDRV_PCM_TRIGGER_STOP; | |
1161 | break; | |
1162 | case SNDRV_PCM_TRIGGER_RESUME: | |
1163 | cmd = SNDRV_PCM_TRIGGER_SUSPEND; | |
836367be | 1164 | break; |
6374f493 KM |
1165 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1166 | cmd = SNDRV_PCM_TRIGGER_PAUSE_PUSH; | |
1167 | break; | |
1168 | } | |
1169 | } | |
836367be | 1170 | |
356caf66 KM |
1171 | /* |
1172 | * STOP | |
1173 | */ | |
6374f493 | 1174 | switch (cmd) { |
4378f1fb PU |
1175 | case SNDRV_PCM_TRIGGER_STOP: |
1176 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
1177 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
356caf66 KM |
1178 | for (i = TRIGGER_MAX; i > 0; i--) { |
1179 | r = trigger[stop][i - 1](substream, cmd, rollback); | |
1180 | if (r < 0) | |
1181 | ret = r; | |
59dd33f8 | 1182 | } |
4378f1fb PU |
1183 | } |
1184 | ||
1185 | return ret; | |
1186 | } | |
1187 | ||
ddee627c LG |
1188 | /* |
1189 | * soc level wrapper for pointer callback | |
ef050bec | 1190 | * If cpu_dai, codec_dai, component driver has the delay callback, then |
dd894f4c | 1191 | * the runtime->delay will be updated via snd_soc_pcm_component/dai_delay(). |
ddee627c LG |
1192 | */ |
1193 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) | |
1194 | { | |
ddee627c LG |
1195 | struct snd_pcm_runtime *runtime = substream->runtime; |
1196 | snd_pcm_uframes_t offset = 0; | |
2e5894d7 | 1197 | snd_pcm_sframes_t codec_delay = 0; |
19bdcc7a | 1198 | snd_pcm_sframes_t cpu_delay = 0; |
ddee627c | 1199 | |
0035e256 | 1200 | offset = snd_soc_pcm_component_pointer(substream); |
b8135864 | 1201 | |
403f830e | 1202 | /* should be called *after* snd_soc_pcm_component_pointer() */ |
8544f08c | 1203 | snd_soc_pcm_dai_delay(substream, &cpu_delay, &codec_delay); |
403f830e | 1204 | snd_soc_pcm_component_delay(substream, &cpu_delay, &codec_delay); |
ddee627c | 1205 | |
dd894f4c | 1206 | runtime->delay = cpu_delay + codec_delay; |
ddee627c LG |
1207 | |
1208 | return offset; | |
1209 | } | |
1210 | ||
01d7584c LG |
1211 | /* connect a FE and BE */ |
1212 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, | |
1213 | struct snd_soc_pcm_runtime *be, int stream) | |
1214 | { | |
bbf7d3b1 PLB |
1215 | struct snd_pcm_substream *fe_substream; |
1216 | struct snd_pcm_substream *be_substream; | |
01d7584c | 1217 | struct snd_soc_dpcm *dpcm; |
b7898396 TI |
1218 | |
1219 | snd_soc_dpcm_mutex_assert_held(fe); | |
01d7584c LG |
1220 | |
1221 | /* only add new dpcms */ | |
8d6258a4 | 1222 | for_each_dpcm_be(fe, stream, dpcm) { |
01d7584c LG |
1223 | if (dpcm->be == be && dpcm->fe == fe) |
1224 | return 0; | |
1225 | } | |
1226 | ||
bbf7d3b1 PLB |
1227 | fe_substream = snd_soc_dpcm_get_substream(fe, stream); |
1228 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
1229 | ||
1230 | if (!fe_substream->pcm->nonatomic && be_substream->pcm->nonatomic) { | |
1231 | dev_err(be->dev, "%s: FE is atomic but BE is nonatomic, invalid configuration\n", | |
1232 | __func__); | |
1233 | return -EINVAL; | |
1234 | } | |
1235 | if (fe_substream->pcm->nonatomic && !be_substream->pcm->nonatomic) { | |
4ccf0949 | 1236 | dev_dbg(be->dev, "FE is nonatomic but BE is not, forcing BE as nonatomic\n"); |
bbf7d3b1 PLB |
1237 | be_substream->pcm->nonatomic = 1; |
1238 | } | |
1239 | ||
fb6d679f | 1240 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); |
01d7584c LG |
1241 | if (!dpcm) |
1242 | return -ENOMEM; | |
1243 | ||
1244 | dpcm->be = be; | |
1245 | dpcm->fe = fe; | |
01d7584c | 1246 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; |
b7898396 | 1247 | snd_soc_dpcm_stream_lock_irq(fe, stream); |
01d7584c LG |
1248 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); |
1249 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); | |
b7898396 | 1250 | snd_soc_dpcm_stream_unlock_irq(fe, stream); |
01d7584c | 1251 | |
7cc302d2 | 1252 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
01d7584c LG |
1253 | stream ? "capture" : "playback", fe->dai_link->name, |
1254 | stream ? "<-" : "->", be->dai_link->name); | |
1255 | ||
154dae87 KM |
1256 | dpcm_create_debugfs_state(dpcm, stream); |
1257 | ||
01d7584c LG |
1258 | return 1; |
1259 | } | |
1260 | ||
1261 | /* reparent a BE onto another FE */ | |
1262 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, | |
1263 | struct snd_soc_pcm_runtime *be, int stream) | |
1264 | { | |
1265 | struct snd_soc_dpcm *dpcm; | |
1266 | struct snd_pcm_substream *fe_substream, *be_substream; | |
1267 | ||
1268 | /* reparent if BE is connected to other FEs */ | |
1269 | if (!be->dpcm[stream].users) | |
1270 | return; | |
1271 | ||
1272 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
db8f91d4 SRM |
1273 | if (!be_substream) |
1274 | return; | |
01d7584c | 1275 | |
d2e24d64 | 1276 | for_each_dpcm_fe(be, stream, dpcm) { |
01d7584c LG |
1277 | if (dpcm->fe == fe) |
1278 | continue; | |
1279 | ||
7cc302d2 | 1280 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
01d7584c LG |
1281 | stream ? "capture" : "playback", |
1282 | dpcm->fe->dai_link->name, | |
1283 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
1284 | ||
1285 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); | |
1286 | be_substream->runtime = fe_substream->runtime; | |
1287 | break; | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* disconnect a BE and FE */ | |
23607025 | 1292 | void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1293 | { |
1294 | struct snd_soc_dpcm *dpcm, *d; | |
9f620684 | 1295 | LIST_HEAD(deleted_dpcms); |
01d7584c | 1296 | |
b7898396 TI |
1297 | snd_soc_dpcm_mutex_assert_held(fe); |
1298 | ||
1299 | snd_soc_dpcm_stream_lock_irq(fe, stream); | |
8d6258a4 | 1300 | for_each_dpcm_be_safe(fe, stream, dpcm, d) { |
103d84a3 | 1301 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
01d7584c LG |
1302 | stream ? "capture" : "playback", |
1303 | dpcm->be->dai_link->name); | |
1304 | ||
1305 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) | |
1306 | continue; | |
1307 | ||
7cc302d2 | 1308 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
01d7584c LG |
1309 | stream ? "capture" : "playback", fe->dai_link->name, |
1310 | stream ? "<-" : "->", dpcm->be->dai_link->name); | |
1311 | ||
1312 | /* BEs still alive need new FE */ | |
1313 | dpcm_be_reparent(fe, dpcm->be, stream); | |
1314 | ||
1315 | list_del(&dpcm->list_be); | |
9f620684 TI |
1316 | list_move(&dpcm->list_fe, &deleted_dpcms); |
1317 | } | |
1318 | snd_soc_dpcm_stream_unlock_irq(fe, stream); | |
1319 | ||
1320 | while (!list_empty(&deleted_dpcms)) { | |
1321 | dpcm = list_first_entry(&deleted_dpcms, struct snd_soc_dpcm, | |
1322 | list_fe); | |
01d7584c | 1323 | list_del(&dpcm->list_fe); |
9f620684 | 1324 | dpcm_remove_debugfs_state(dpcm); |
01d7584c LG |
1325 | kfree(dpcm); |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* get BE for DAI widget and stream */ | |
1330 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, | |
1331 | struct snd_soc_dapm_widget *widget, int stream) | |
1332 | { | |
1333 | struct snd_soc_pcm_runtime *be; | |
93597fae | 1334 | struct snd_soc_dapm_widget *w; |
7afecb30 | 1335 | struct snd_soc_dai *dai; |
1a497983 | 1336 | int i; |
01d7584c | 1337 | |
3c146465 LG |
1338 | dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); |
1339 | ||
93597fae | 1340 | for_each_card_rtds(card, be) { |
01d7584c | 1341 | |
93597fae KM |
1342 | if (!be->dai_link->no_pcm) |
1343 | continue; | |
35ea0655 | 1344 | |
75459065 TI |
1345 | if (!snd_soc_dpcm_get_substream(be, stream)) |
1346 | continue; | |
1347 | ||
c840f769 | 1348 | for_each_rtd_dais(be, i, dai) { |
19bdcc7a | 1349 | w = snd_soc_dai_get_widget(dai, stream); |
3c146465 | 1350 | |
19bdcc7a SN |
1351 | dev_dbg(card->dev, "ASoC: try BE : %s\n", |
1352 | w ? w->name : "(not set)"); | |
2e5894d7 | 1353 | |
19bdcc7a SN |
1354 | if (w == widget) |
1355 | return be; | |
1356 | } | |
01d7584c LG |
1357 | } |
1358 | ||
9d6ee365 | 1359 | /* Widget provided is not a BE */ |
01d7584c LG |
1360 | return NULL; |
1361 | } | |
1362 | ||
5edcf2a3 | 1363 | int widget_in_list(struct snd_soc_dapm_widget_list *list, |
01d7584c LG |
1364 | struct snd_soc_dapm_widget *widget) |
1365 | { | |
09e88f8a | 1366 | struct snd_soc_dapm_widget *w; |
01d7584c LG |
1367 | int i; |
1368 | ||
09e88f8a KM |
1369 | for_each_dapm_widgets(list, i, w) |
1370 | if (widget == w) | |
01d7584c | 1371 | return 1; |
01d7584c LG |
1372 | |
1373 | return 0; | |
1374 | } | |
5edcf2a3 | 1375 | EXPORT_SYMBOL_GPL(widget_in_list); |
01d7584c | 1376 | |
d1a7af09 | 1377 | bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir) |
5fdd022c PS |
1378 | { |
1379 | struct snd_soc_card *card = widget->dapm->card; | |
1380 | struct snd_soc_pcm_runtime *rtd; | |
c2cd8216 | 1381 | int stream; |
5fdd022c | 1382 | |
c2cd8216 KM |
1383 | /* adjust dir to stream */ |
1384 | if (dir == SND_SOC_DAPM_DIR_OUT) | |
1385 | stream = SNDRV_PCM_STREAM_PLAYBACK; | |
1386 | else | |
1387 | stream = SNDRV_PCM_STREAM_CAPTURE; | |
5fdd022c | 1388 | |
027a4838 KM |
1389 | rtd = dpcm_get_be(card, widget, stream); |
1390 | if (rtd) | |
1391 | return true; | |
5fdd022c PS |
1392 | |
1393 | return false; | |
1394 | } | |
d1a7af09 | 1395 | EXPORT_SYMBOL_GPL(dpcm_end_walk_at_be); |
5fdd022c | 1396 | |
23607025 | 1397 | int dpcm_path_get(struct snd_soc_pcm_runtime *fe, |
1ce43acf | 1398 | int stream, struct snd_soc_dapm_widget_list **list) |
01d7584c | 1399 | { |
c2233a26 | 1400 | struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); |
01d7584c LG |
1401 | int paths; |
1402 | ||
3989ade2 | 1403 | if (fe->dai_link->num_cpus > 1) { |
6e1276a5 BL |
1404 | dev_err(fe->dev, |
1405 | "%s doesn't support Multi CPU yet\n", __func__); | |
1406 | return -EINVAL; | |
1407 | } | |
1408 | ||
01d7584c | 1409 | /* get number of valid DAI paths and their widgets */ |
6742064a | 1410 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, |
aa293777 SP |
1411 | fe->card->component_chaining ? |
1412 | NULL : dpcm_end_walk_at_be); | |
01d7584c | 1413 | |
d479f00b KM |
1414 | if (paths > 0) |
1415 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, | |
01d7584c | 1416 | stream ? "capture" : "playback"); |
d479f00b KM |
1417 | else if (paths == 0) |
1418 | dev_dbg(fe->dev, "ASoC: %s no valid %s path\n", fe->dai_link->name, | |
1419 | stream ? "capture" : "playback"); | |
01d7584c | 1420 | |
01d7584c LG |
1421 | return paths; |
1422 | } | |
1423 | ||
52645e33 KM |
1424 | void dpcm_path_put(struct snd_soc_dapm_widget_list **list) |
1425 | { | |
1426 | snd_soc_dapm_dai_free_widgets(list); | |
1427 | } | |
1428 | ||
8cce6569 GL |
1429 | static bool dpcm_be_is_active(struct snd_soc_dpcm *dpcm, int stream, |
1430 | struct snd_soc_dapm_widget_list *list) | |
01d7584c | 1431 | { |
7afecb30 | 1432 | struct snd_soc_dai *dai; |
8cce6569 GL |
1433 | unsigned int i; |
1434 | ||
c840f769 KM |
1435 | /* is there a valid DAI widget for this BE */ |
1436 | for_each_rtd_dais(dpcm->be, i, dai) { | |
7931df9b | 1437 | struct snd_soc_dapm_widget *widget = snd_soc_dai_get_widget(dai, stream); |
8cce6569 GL |
1438 | |
1439 | /* | |
c840f769 | 1440 | * The BE is pruned only if none of the dai |
8cce6569 GL |
1441 | * widgets are in the active list. |
1442 | */ | |
1443 | if (widget && widget_in_list(list, widget)) | |
1444 | return true; | |
1445 | } | |
1446 | ||
8cce6569 GL |
1447 | return false; |
1448 | } | |
1449 | ||
1450 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
1451 | struct snd_soc_dapm_widget_list **list_) | |
1452 | { | |
1453 | struct snd_soc_dpcm *dpcm; | |
01d7584c LG |
1454 | int prune = 0; |
1455 | ||
1456 | /* Destroy any old FE <--> BE connections */ | |
8d6258a4 | 1457 | for_each_dpcm_be(fe, stream, dpcm) { |
8cce6569 | 1458 | if (dpcm_be_is_active(dpcm, stream, *list_)) |
bed646dc | 1459 | continue; |
01d7584c | 1460 | |
103d84a3 | 1461 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
01d7584c LG |
1462 | stream ? "capture" : "playback", |
1463 | dpcm->be->dai_link->name, fe->dai_link->name); | |
1464 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
a7e20444 | 1465 | dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_BE); |
01d7584c LG |
1466 | prune++; |
1467 | } | |
1468 | ||
103d84a3 | 1469 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
01d7584c LG |
1470 | return prune; |
1471 | } | |
1472 | ||
1473 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, | |
1474 | struct snd_soc_dapm_widget_list **list_) | |
1475 | { | |
1476 | struct snd_soc_card *card = fe->card; | |
1477 | struct snd_soc_dapm_widget_list *list = *list_; | |
1478 | struct snd_soc_pcm_runtime *be; | |
09e88f8a | 1479 | struct snd_soc_dapm_widget *widget; |
0d3a5178 | 1480 | struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); |
01d7584c LG |
1481 | int i, new = 0, err; |
1482 | ||
6932b20d | 1483 | /* don't connect if FE is not running */ |
0d3a5178 | 1484 | if (!fe_substream->runtime && !fe->fe_compr) |
6932b20d KM |
1485 | return new; |
1486 | ||
01d7584c | 1487 | /* Create any new FE <--> BE connections */ |
09e88f8a | 1488 | for_each_dapm_widgets(list, i, widget) { |
01d7584c | 1489 | |
09e88f8a | 1490 | switch (widget->id) { |
4616274d | 1491 | case snd_soc_dapm_dai_in: |
c5b8540d KC |
1492 | if (stream != SNDRV_PCM_STREAM_PLAYBACK) |
1493 | continue; | |
1494 | break; | |
4616274d | 1495 | case snd_soc_dapm_dai_out: |
c5b8540d KC |
1496 | if (stream != SNDRV_PCM_STREAM_CAPTURE) |
1497 | continue; | |
4616274d MB |
1498 | break; |
1499 | default: | |
01d7584c | 1500 | continue; |
4616274d | 1501 | } |
01d7584c LG |
1502 | |
1503 | /* is there a valid BE rtd for this widget */ | |
09e88f8a | 1504 | be = dpcm_get_be(card, widget, stream); |
01d7584c | 1505 | if (!be) { |
b6eabd24 SW |
1506 | dev_dbg(fe->dev, "ASoC: no BE found for %s\n", |
1507 | widget->name); | |
01d7584c LG |
1508 | continue; |
1509 | } | |
1510 | ||
9609cfcd PLB |
1511 | /* |
1512 | * Filter for systems with 'component_chaining' enabled. | |
1513 | * This helps to avoid unnecessary re-configuration of an | |
1514 | * already active BE on such systems. | |
1515 | */ | |
1516 | if (fe->card->component_chaining && | |
1517 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
0c25db3f SP |
1518 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) |
1519 | continue; | |
1520 | ||
01d7584c LG |
1521 | /* newly connected FE and BE */ |
1522 | err = dpcm_be_connect(fe, be, stream); | |
1523 | if (err < 0) { | |
103d84a3 | 1524 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
09e88f8a | 1525 | widget->name); |
01d7584c LG |
1526 | break; |
1527 | } else if (err == 0) /* already connected */ | |
1528 | continue; | |
1529 | ||
1530 | /* new */ | |
a7e20444 | 1531 | dpcm_set_be_update_state(be, stream, SND_SOC_DPCM_UPDATE_BE); |
01d7584c LG |
1532 | new++; |
1533 | } | |
1534 | ||
103d84a3 | 1535 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
01d7584c LG |
1536 | return new; |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * Find the corresponding BE DAIs that source or sink audio to this | |
1541 | * FE substream. | |
1542 | */ | |
23607025 | 1543 | int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, |
01d7584c LG |
1544 | int stream, struct snd_soc_dapm_widget_list **list, int new) |
1545 | { | |
1546 | if (new) | |
1547 | return dpcm_add_paths(fe, stream, list); | |
1548 | else | |
1549 | return dpcm_prune_paths(fe, stream, list); | |
1550 | } | |
1551 | ||
23607025 | 1552 | void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1553 | { |
1554 | struct snd_soc_dpcm *dpcm; | |
1555 | ||
8d6258a4 | 1556 | for_each_dpcm_be(fe, stream, dpcm) |
a7e20444 | 1557 | dpcm_set_be_update_state(dpcm->be, stream, SND_SOC_DPCM_UPDATE_NO); |
01d7584c LG |
1558 | } |
1559 | ||
531590bb KM |
1560 | void dpcm_be_dai_stop(struct snd_soc_pcm_runtime *fe, int stream, |
1561 | int do_hw_free, struct snd_soc_dpcm *last) | |
01d7584c LG |
1562 | { |
1563 | struct snd_soc_dpcm *dpcm; | |
1564 | ||
1565 | /* disable any enabled and non active backends */ | |
8d6258a4 | 1566 | for_each_dpcm_be(fe, stream, dpcm) { |
01d7584c LG |
1567 | struct snd_soc_pcm_runtime *be = dpcm->be; |
1568 | struct snd_pcm_substream *be_substream = | |
1569 | snd_soc_dpcm_get_substream(be, stream); | |
1570 | ||
531590bb KM |
1571 | if (dpcm == last) |
1572 | return; | |
1573 | ||
1574 | /* is this op for this BE ? */ | |
1575 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1576 | continue; | |
1577 | ||
1db19c15 | 1578 | if (be->dpcm[stream].users == 0) { |
103d84a3 | 1579 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
01d7584c LG |
1580 | stream ? "capture" : "playback", |
1581 | be->dpcm[stream].state); | |
1db19c15 KM |
1582 | continue; |
1583 | } | |
01d7584c LG |
1584 | |
1585 | if (--be->dpcm[stream].users != 0) | |
1586 | continue; | |
1587 | ||
531590bb KM |
1588 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) { |
1589 | if (!do_hw_free) | |
1590 | continue; | |
1591 | ||
1592 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) { | |
b7898396 | 1593 | __soc_pcm_hw_free(be, be_substream); |
531590bb KM |
1594 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
1595 | } | |
1596 | } | |
01d7584c | 1597 | |
b7898396 | 1598 | __soc_pcm_close(be, be_substream); |
01d7584c LG |
1599 | be_substream->runtime = NULL; |
1600 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1601 | } | |
1602 | } | |
1603 | ||
23607025 | 1604 | int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c | 1605 | { |
0d3a5178 | 1606 | struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); |
06aaeb87 | 1607 | struct snd_soc_pcm_runtime *be; |
01d7584c LG |
1608 | struct snd_soc_dpcm *dpcm; |
1609 | int err, count = 0; | |
1610 | ||
1611 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ | |
8d6258a4 | 1612 | for_each_dpcm_be(fe, stream, dpcm) { |
06aaeb87 | 1613 | struct snd_pcm_substream *be_substream; |
01d7584c | 1614 | |
06aaeb87 KM |
1615 | be = dpcm->be; |
1616 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
01d7584c | 1617 | |
2062b4c5 RKAL |
1618 | if (!be_substream) { |
1619 | dev_err(be->dev, "ASoC: no backend %s stream\n", | |
1620 | stream ? "capture" : "playback"); | |
1621 | continue; | |
1622 | } | |
1623 | ||
01d7584c LG |
1624 | /* is this op for this BE ? */ |
1625 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1626 | continue; | |
1627 | ||
1628 | /* first time the dpcm is open ? */ | |
1db19c15 | 1629 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) { |
103d84a3 | 1630 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
01d7584c LG |
1631 | stream ? "capture" : "playback", |
1632 | be->dpcm[stream].state); | |
1db19c15 KM |
1633 | continue; |
1634 | } | |
01d7584c LG |
1635 | |
1636 | if (be->dpcm[stream].users++ != 0) | |
1637 | continue; | |
1638 | ||
1639 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && | |
1640 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) | |
1641 | continue; | |
1642 | ||
2062b4c5 RKAL |
1643 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
1644 | stream ? "capture" : "playback", be->dai_link->name); | |
01d7584c | 1645 | |
0d3a5178 | 1646 | be_substream->runtime = fe_substream->runtime; |
b7898396 | 1647 | err = __soc_pcm_open(be, be_substream); |
01d7584c | 1648 | if (err < 0) { |
01d7584c LG |
1649 | be->dpcm[stream].users--; |
1650 | if (be->dpcm[stream].users < 0) | |
103d84a3 | 1651 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
01d7584c LG |
1652 | stream ? "capture" : "playback", |
1653 | be->dpcm[stream].state); | |
1654 | ||
1655 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; | |
1656 | goto unwind; | |
1657 | } | |
848aedfd | 1658 | be->dpcm[stream].be_start = 0; |
01d7584c LG |
1659 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; |
1660 | count++; | |
1661 | } | |
1662 | ||
1663 | return count; | |
1664 | ||
1665 | unwind: | |
531590bb | 1666 | dpcm_be_dai_startup_rollback(fe, stream, dpcm); |
01d7584c | 1667 | |
04110728 | 1668 | return soc_pcm_ret(fe, err); |
01d7584c LG |
1669 | } |
1670 | ||
5f53898a KM |
1671 | static void dpcm_runtime_setup_fe(struct snd_pcm_substream *substream) |
1672 | { | |
1673 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); | |
1674 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1675 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1676 | struct snd_soc_dai *dai; | |
1677 | int stream = substream->stream; | |
083a25b1 | 1678 | u64 formats = hw->formats; |
5f53898a KM |
1679 | int i; |
1680 | ||
1681 | soc_pcm_hw_init(hw); | |
1682 | ||
083a25b1 SW |
1683 | if (formats) |
1684 | hw->formats &= formats; | |
1685 | ||
5f53898a KM |
1686 | for_each_rtd_cpu_dais(fe, i, dai) { |
1687 | struct snd_soc_pcm_stream *cpu_stream; | |
1688 | ||
1689 | /* | |
1690 | * Skip CPUs which don't support the current stream | |
1691 | * type. See soc_pcm_init_runtime_hw() for more details | |
1692 | */ | |
1693 | if (!snd_soc_dai_stream_valid(dai, stream)) | |
1694 | continue; | |
1695 | ||
1696 | cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream); | |
1697 | ||
1698 | soc_pcm_hw_update_rate(hw, cpu_stream); | |
1699 | soc_pcm_hw_update_chan(hw, cpu_stream); | |
1700 | soc_pcm_hw_update_format(hw, cpu_stream); | |
1701 | } | |
1702 | ||
1703 | } | |
1704 | ||
1b8cb123 | 1705 | static void dpcm_runtime_setup_be_format(struct snd_pcm_substream *substream) |
b073ed4e | 1706 | { |
0ceef681 | 1707 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
1b8cb123 | 1708 | struct snd_pcm_runtime *runtime = substream->runtime; |
4b260f42 | 1709 | struct snd_pcm_hardware *hw = &runtime->hw; |
b073ed4e | 1710 | struct snd_soc_dpcm *dpcm; |
7afecb30 | 1711 | struct snd_soc_dai *dai; |
b073ed4e KM |
1712 | int stream = substream->stream; |
1713 | ||
1714 | if (!fe->dai_link->dpcm_merged_format) | |
435ffb76 | 1715 | return; |
b073ed4e KM |
1716 | |
1717 | /* | |
1718 | * It returns merged BE codec format | |
1719 | * if FE want to use it (= dpcm_merged_format) | |
1720 | */ | |
1721 | ||
8d6258a4 | 1722 | for_each_dpcm_be(fe, stream, dpcm) { |
b073ed4e | 1723 | struct snd_soc_pcm_runtime *be = dpcm->be; |
b073ed4e KM |
1724 | struct snd_soc_pcm_stream *codec_stream; |
1725 | int i; | |
1726 | ||
a4be4187 | 1727 | for_each_rtd_codec_dais(be, i, dai) { |
4febced1 JB |
1728 | /* |
1729 | * Skip CODECs which don't support the current stream | |
1730 | * type. See soc_pcm_init_runtime_hw() for more details | |
1731 | */ | |
7afecb30 | 1732 | if (!snd_soc_dai_stream_valid(dai, stream)) |
4febced1 JB |
1733 | continue; |
1734 | ||
acf253c1 | 1735 | codec_stream = snd_soc_dai_get_pcm_stream(dai, stream); |
b073ed4e | 1736 | |
debc71f2 | 1737 | soc_pcm_hw_update_format(hw, codec_stream); |
b073ed4e KM |
1738 | } |
1739 | } | |
b073ed4e KM |
1740 | } |
1741 | ||
1b8cb123 | 1742 | static void dpcm_runtime_setup_be_chan(struct snd_pcm_substream *substream) |
f4c277b8 | 1743 | { |
0ceef681 | 1744 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
1b8cb123 | 1745 | struct snd_pcm_runtime *runtime = substream->runtime; |
4b260f42 | 1746 | struct snd_pcm_hardware *hw = &runtime->hw; |
f4c277b8 JW |
1747 | struct snd_soc_dpcm *dpcm; |
1748 | int stream = substream->stream; | |
1749 | ||
1750 | if (!fe->dai_link->dpcm_merged_chan) | |
1751 | return; | |
1752 | ||
f4c277b8 JW |
1753 | /* |
1754 | * It returns merged BE codec channel; | |
1755 | * if FE want to use it (= dpcm_merged_chan) | |
1756 | */ | |
1757 | ||
8d6258a4 | 1758 | for_each_dpcm_be(fe, stream, dpcm) { |
f4c277b8 | 1759 | struct snd_soc_pcm_runtime *be = dpcm->be; |
4f2bd18b | 1760 | struct snd_soc_pcm_stream *cpu_stream; |
19bdcc7a SN |
1761 | struct snd_soc_dai *dai; |
1762 | int i; | |
4f2bd18b | 1763 | |
a4be4187 | 1764 | for_each_rtd_cpu_dais(be, i, dai) { |
0e9cf4c4 BL |
1765 | /* |
1766 | * Skip CPUs which don't support the current stream | |
1767 | * type. See soc_pcm_init_runtime_hw() for more details | |
1768 | */ | |
1769 | if (!snd_soc_dai_stream_valid(dai, stream)) | |
1770 | continue; | |
1771 | ||
19bdcc7a | 1772 | cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream); |
4f2bd18b | 1773 | |
6cb56a45 | 1774 | soc_pcm_hw_update_chan(hw, cpu_stream); |
19bdcc7a | 1775 | } |
4f2bd18b JB |
1776 | |
1777 | /* | |
1778 | * chan min/max cannot be enforced if there are multiple CODEC | |
1779 | * DAIs connected to a single CPU DAI, use CPU DAI's directly | |
1780 | */ | |
3989ade2 | 1781 | if (be->dai_link->num_codecs == 1) { |
9bdc573d KM |
1782 | struct snd_soc_pcm_stream *codec_stream = snd_soc_dai_get_pcm_stream( |
1783 | asoc_rtd_to_codec(be, 0), stream); | |
f4c277b8 | 1784 | |
6cb56a45 | 1785 | soc_pcm_hw_update_chan(hw, codec_stream); |
f4c277b8 JW |
1786 | } |
1787 | } | |
1788 | } | |
1789 | ||
1b8cb123 | 1790 | static void dpcm_runtime_setup_be_rate(struct snd_pcm_substream *substream) |
baacd8d1 | 1791 | { |
0ceef681 | 1792 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
1b8cb123 | 1793 | struct snd_pcm_runtime *runtime = substream->runtime; |
4b260f42 | 1794 | struct snd_pcm_hardware *hw = &runtime->hw; |
baacd8d1 JB |
1795 | struct snd_soc_dpcm *dpcm; |
1796 | int stream = substream->stream; | |
1797 | ||
1798 | if (!fe->dai_link->dpcm_merged_rate) | |
1799 | return; | |
1800 | ||
1801 | /* | |
1802 | * It returns merged BE codec channel; | |
1803 | * if FE want to use it (= dpcm_merged_chan) | |
1804 | */ | |
1805 | ||
8d6258a4 | 1806 | for_each_dpcm_be(fe, stream, dpcm) { |
baacd8d1 | 1807 | struct snd_soc_pcm_runtime *be = dpcm->be; |
c840f769 | 1808 | struct snd_soc_pcm_stream *pcm; |
7afecb30 | 1809 | struct snd_soc_dai *dai; |
baacd8d1 JB |
1810 | int i; |
1811 | ||
c840f769 | 1812 | for_each_rtd_dais(be, i, dai) { |
baacd8d1 | 1813 | /* |
c840f769 | 1814 | * Skip DAIs which don't support the current stream |
baacd8d1 JB |
1815 | * type. See soc_pcm_init_runtime_hw() for more details |
1816 | */ | |
7afecb30 | 1817 | if (!snd_soc_dai_stream_valid(dai, stream)) |
baacd8d1 JB |
1818 | continue; |
1819 | ||
c840f769 | 1820 | pcm = snd_soc_dai_get_pcm_stream(dai, stream); |
baacd8d1 | 1821 | |
f6c04af5 | 1822 | soc_pcm_hw_update_rate(hw, pcm); |
baacd8d1 JB |
1823 | } |
1824 | } | |
1825 | } | |
1826 | ||
906c7d69 PL |
1827 | static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, |
1828 | int stream) | |
1829 | { | |
1830 | struct snd_soc_dpcm *dpcm; | |
0ceef681 | 1831 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
19bdcc7a | 1832 | struct snd_soc_dai *fe_cpu_dai; |
12ffd726 | 1833 | int err = 0; |
19bdcc7a | 1834 | int i; |
906c7d69 PL |
1835 | |
1836 | /* apply symmetry for FE */ | |
68cbc557 | 1837 | soc_pcm_update_symmetry(fe_substream); |
906c7d69 | 1838 | |
a4be4187 | 1839 | for_each_rtd_cpu_dais (fe, i, fe_cpu_dai) { |
19bdcc7a | 1840 | /* Symmetry only applies if we've got an active stream. */ |
f8fc9ec5 KM |
1841 | err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); |
1842 | if (err < 0) | |
bbd2bac8 | 1843 | goto error; |
906c7d69 PL |
1844 | } |
1845 | ||
1846 | /* apply symmetry for BE */ | |
8d6258a4 | 1847 | for_each_dpcm_be(fe, stream, dpcm) { |
906c7d69 PL |
1848 | struct snd_soc_pcm_runtime *be = dpcm->be; |
1849 | struct snd_pcm_substream *be_substream = | |
1850 | snd_soc_dpcm_get_substream(be, stream); | |
6246f283 | 1851 | struct snd_soc_pcm_runtime *rtd; |
c840f769 | 1852 | struct snd_soc_dai *dai; |
906c7d69 | 1853 | |
6246f283 JB |
1854 | /* A backend may not have the requested substream */ |
1855 | if (!be_substream) | |
1856 | continue; | |
1857 | ||
0ceef681 | 1858 | rtd = asoc_substream_to_rtd(be_substream); |
f1176614 JK |
1859 | if (rtd->dai_link->be_hw_params_fixup) |
1860 | continue; | |
1861 | ||
68cbc557 | 1862 | soc_pcm_update_symmetry(be_substream); |
906c7d69 PL |
1863 | |
1864 | /* Symmetry only applies if we've got an active stream. */ | |
c840f769 | 1865 | for_each_rtd_dais(rtd, i, dai) { |
f8fc9ec5 KM |
1866 | err = soc_pcm_apply_symmetry(fe_substream, dai); |
1867 | if (err < 0) | |
bbd2bac8 | 1868 | goto error; |
906c7d69 PL |
1869 | } |
1870 | } | |
bbd2bac8 | 1871 | error: |
04110728 | 1872 | return soc_pcm_ret(fe, err); |
906c7d69 PL |
1873 | } |
1874 | ||
01d7584c LG |
1875 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) |
1876 | { | |
0ceef681 | 1877 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
01d7584c LG |
1878 | int stream = fe_substream->stream, ret = 0; |
1879 | ||
ea9d0d77 | 1880 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
01d7584c | 1881 | |
25c2f515 | 1882 | ret = dpcm_be_dai_startup(fe, stream); |
06aaeb87 | 1883 | if (ret < 0) |
01d7584c | 1884 | goto be_err; |
01d7584c | 1885 | |
103d84a3 | 1886 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
01d7584c LG |
1887 | |
1888 | /* start the DAI frontend */ | |
b7898396 | 1889 | ret = __soc_pcm_open(fe, fe_substream); |
e4b044f4 | 1890 | if (ret < 0) |
01d7584c | 1891 | goto unwind; |
01d7584c LG |
1892 | |
1893 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; | |
1894 | ||
4fe28461 KM |
1895 | dpcm_runtime_setup_fe(fe_substream); |
1896 | ||
1897 | dpcm_runtime_setup_be_format(fe_substream); | |
1898 | dpcm_runtime_setup_be_chan(fe_substream); | |
1899 | dpcm_runtime_setup_be_rate(fe_substream); | |
01d7584c | 1900 | |
906c7d69 | 1901 | ret = dpcm_apply_symmetry(fe_substream, stream); |
01d7584c LG |
1902 | |
1903 | unwind: | |
8a01fbf0 KM |
1904 | if (ret < 0) |
1905 | dpcm_be_dai_startup_unwind(fe, stream); | |
01d7584c | 1906 | be_err: |
ea9d0d77 | 1907 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
06aaeb87 | 1908 | |
04110728 | 1909 | return soc_pcm_ret(fe, ret); |
01d7584c LG |
1910 | } |
1911 | ||
01d7584c LG |
1912 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) |
1913 | { | |
0ceef681 | 1914 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
01d7584c LG |
1915 | int stream = substream->stream; |
1916 | ||
b7898396 TI |
1917 | snd_soc_dpcm_mutex_assert_held(fe); |
1918 | ||
ea9d0d77 | 1919 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
01d7584c LG |
1920 | |
1921 | /* shutdown the BEs */ | |
25c2f515 | 1922 | dpcm_be_dai_shutdown(fe, stream); |
01d7584c | 1923 | |
103d84a3 | 1924 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
01d7584c LG |
1925 | |
1926 | /* now shutdown the frontend */ | |
b7898396 | 1927 | __soc_pcm_close(fe, substream); |
01d7584c | 1928 | |
bb9dd3ce RS |
1929 | /* run the stream stop event */ |
1930 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); | |
1931 | ||
01d7584c | 1932 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
ea9d0d77 | 1933 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
01d7584c LG |
1934 | return 0; |
1935 | } | |
1936 | ||
f52366e6 | 1937 | void dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
1938 | { |
1939 | struct snd_soc_dpcm *dpcm; | |
1940 | ||
1941 | /* only hw_params backends that are either sinks or sources | |
1942 | * to this frontend DAI */ | |
8d6258a4 | 1943 | for_each_dpcm_be(fe, stream, dpcm) { |
01d7584c LG |
1944 | |
1945 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
1946 | struct snd_pcm_substream *be_substream = | |
1947 | snd_soc_dpcm_get_substream(be, stream); | |
1948 | ||
1949 | /* is this op for this BE ? */ | |
1950 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
1951 | continue; | |
1952 | ||
1953 | /* only free hw when no longer used - check all FEs */ | |
1954 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
1955 | continue; | |
1956 | ||
36fba62c QZ |
1957 | /* do not free hw if this BE is used by other FE */ |
1958 | if (be->dpcm[stream].users > 1) | |
1959 | continue; | |
1960 | ||
01d7584c LG |
1961 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
1962 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
1963 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
08b27848 | 1964 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
5e82d2be VK |
1965 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
1966 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) | |
01d7584c LG |
1967 | continue; |
1968 | ||
103d84a3 | 1969 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
94d215cc | 1970 | be->dai_link->name); |
01d7584c | 1971 | |
b7898396 | 1972 | __soc_pcm_hw_free(be, be_substream); |
01d7584c LG |
1973 | |
1974 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
1975 | } | |
01d7584c LG |
1976 | } |
1977 | ||
45c0a188 | 1978 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
01d7584c | 1979 | { |
0ceef681 | 1980 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
f52366e6 | 1981 | int stream = substream->stream; |
01d7584c | 1982 | |
b7898396 | 1983 | snd_soc_dpcm_mutex_lock(fe); |
ea9d0d77 | 1984 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
01d7584c | 1985 | |
103d84a3 | 1986 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
01d7584c LG |
1987 | |
1988 | /* call hw_free on the frontend */ | |
b7898396 | 1989 | soc_pcm_hw_clean(fe, substream, 0); |
01d7584c LG |
1990 | |
1991 | /* only hw_params backends that are either sinks or sources | |
1992 | * to this frontend DAI */ | |
f52366e6 | 1993 | dpcm_be_dai_hw_free(fe, stream); |
01d7584c LG |
1994 | |
1995 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; | |
ea9d0d77 | 1996 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
01d7584c | 1997 | |
b7898396 | 1998 | snd_soc_dpcm_mutex_unlock(fe); |
01d7584c LG |
1999 | return 0; |
2000 | } | |
2001 | ||
23607025 | 2002 | int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c | 2003 | { |
33b6b94f KM |
2004 | struct snd_soc_pcm_runtime *be; |
2005 | struct snd_pcm_substream *be_substream; | |
01d7584c LG |
2006 | struct snd_soc_dpcm *dpcm; |
2007 | int ret; | |
2008 | ||
8d6258a4 | 2009 | for_each_dpcm_be(fe, stream, dpcm) { |
25106550 KM |
2010 | struct snd_pcm_hw_params hw_params; |
2011 | ||
33b6b94f KM |
2012 | be = dpcm->be; |
2013 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
01d7584c LG |
2014 | |
2015 | /* is this op for this BE ? */ | |
2016 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
2017 | continue; | |
2018 | ||
01d7584c | 2019 | /* copy params for each dpcm */ |
25106550 | 2020 | memcpy(&hw_params, &fe->dpcm[stream].hw_params, |
01d7584c LG |
2021 | sizeof(struct snd_pcm_hw_params)); |
2022 | ||
2023 | /* perform any hw_params fixups */ | |
25106550 | 2024 | ret = snd_soc_link_be_hw_params_fixup(be, &hw_params); |
0cbbf8a0 KM |
2025 | if (ret < 0) |
2026 | goto unwind; | |
01d7584c | 2027 | |
ae061d2a | 2028 | /* copy the fixed-up hw params for BE dai */ |
25106550 | 2029 | memcpy(&be->dpcm[stream].hw_params, &hw_params, |
ae061d2a LY |
2030 | sizeof(struct snd_pcm_hw_params)); |
2031 | ||
b0639bd2 KM |
2032 | /* only allow hw_params() if no connected FEs are running */ |
2033 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) | |
2034 | continue; | |
2035 | ||
2036 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
2037 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2038 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) | |
2039 | continue; | |
2040 | ||
2041 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", | |
94d215cc | 2042 | be->dai_link->name); |
b0639bd2 | 2043 | |
25106550 | 2044 | ret = __soc_pcm_hw_params(be, be_substream, &hw_params); |
cb11f79b | 2045 | if (ret < 0) |
01d7584c | 2046 | goto unwind; |
01d7584c LG |
2047 | |
2048 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; | |
2049 | } | |
2050 | return 0; | |
2051 | ||
2052 | unwind: | |
33b6b94f KM |
2053 | dev_dbg(fe->dev, "ASoC: %s() failed at %s (%d)\n", |
2054 | __func__, be->dai_link->name, ret); | |
2055 | ||
01d7584c | 2056 | /* disable any enabled and non active backends */ |
8d6258a4 | 2057 | for_each_dpcm_be_rollback(fe, stream, dpcm) { |
33b6b94f KM |
2058 | be = dpcm->be; |
2059 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
01d7584c LG |
2060 | |
2061 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
2062 | continue; | |
2063 | ||
2064 | /* only allow hw_free() if no connected FEs are running */ | |
2065 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) | |
2066 | continue; | |
2067 | ||
2068 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && | |
2069 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && | |
2070 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && | |
2071 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) | |
2072 | continue; | |
2073 | ||
b7898396 | 2074 | __soc_pcm_hw_free(be, be_substream); |
01d7584c LG |
2075 | } |
2076 | ||
2077 | return ret; | |
2078 | } | |
2079 | ||
45c0a188 MB |
2080 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
2081 | struct snd_pcm_hw_params *params) | |
01d7584c | 2082 | { |
0ceef681 | 2083 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
01d7584c LG |
2084 | int ret, stream = substream->stream; |
2085 | ||
b7898396 | 2086 | snd_soc_dpcm_mutex_lock(fe); |
ea9d0d77 | 2087 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
01d7584c | 2088 | |
25c2f515 | 2089 | memcpy(&fe->dpcm[stream].hw_params, params, |
01d7584c | 2090 | sizeof(struct snd_pcm_hw_params)); |
25c2f515 | 2091 | ret = dpcm_be_dai_hw_params(fe, stream); |
33b6b94f | 2092 | if (ret < 0) |
01d7584c | 2093 | goto out; |
01d7584c | 2094 | |
103d84a3 | 2095 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
01d7584c LG |
2096 | fe->dai_link->name, params_rate(params), |
2097 | params_channels(params), params_format(params)); | |
2098 | ||
2099 | /* call hw_params on the frontend */ | |
b7898396 | 2100 | ret = __soc_pcm_hw_params(fe, substream, params); |
cb11f79b | 2101 | if (ret < 0) |
01d7584c | 2102 | dpcm_be_dai_hw_free(fe, stream); |
cb11f79b | 2103 | else |
01d7584c LG |
2104 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; |
2105 | ||
2106 | out: | |
ea9d0d77 | 2107 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
b7898396 | 2108 | snd_soc_dpcm_mutex_unlock(fe); |
33b6b94f | 2109 | |
04110728 | 2110 | return soc_pcm_ret(fe, ret); |
01d7584c LG |
2111 | } |
2112 | ||
23607025 | 2113 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
45c0a188 | 2114 | int cmd) |
01d7584c | 2115 | { |
db3aa39c | 2116 | struct snd_soc_pcm_runtime *be; |
9995c1d0 | 2117 | bool pause_stop_transition; |
01d7584c | 2118 | struct snd_soc_dpcm *dpcm; |
b2ae8066 | 2119 | unsigned long flags; |
01d7584c LG |
2120 | int ret = 0; |
2121 | ||
8d6258a4 | 2122 | for_each_dpcm_be(fe, stream, dpcm) { |
db3aa39c | 2123 | struct snd_pcm_substream *be_substream; |
01d7584c | 2124 | |
db3aa39c KM |
2125 | be = dpcm->be; |
2126 | be_substream = snd_soc_dpcm_get_substream(be, stream); | |
01d7584c | 2127 | |
3c75c0ea | 2128 | snd_soc_dpcm_stream_lock_irqsave_nested(be, stream, flags); |
b2ae8066 | 2129 | |
01d7584c LG |
2130 | /* is this op for this BE ? */ |
2131 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
b2ae8066 | 2132 | goto next; |
01d7584c | 2133 | |
a9faca15 KM |
2134 | dev_dbg(be->dev, "ASoC: trigger BE %s cmd %d\n", |
2135 | be->dai_link->name, cmd); | |
2136 | ||
01d7584c LG |
2137 | switch (cmd) { |
2138 | case SNDRV_PCM_TRIGGER_START: | |
848aedfd PLB |
2139 | if (!be->dpcm[stream].be_start && |
2140 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && | |
21fca8bd | 2141 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
3202e2f5 | 2142 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
b2ae8066 | 2143 | goto next; |
6479f758 | 2144 | |
848aedfd PLB |
2145 | be->dpcm[stream].be_start++; |
2146 | if (be->dpcm[stream].be_start != 1) | |
2147 | goto next; | |
2148 | ||
374b50e2 PLB |
2149 | if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_PAUSED) |
2150 | ret = soc_pcm_trigger(be_substream, | |
2151 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
2152 | else | |
2153 | ret = soc_pcm_trigger(be_substream, | |
2154 | SNDRV_PCM_TRIGGER_START); | |
848aedfd PLB |
2155 | if (ret) { |
2156 | be->dpcm[stream].be_start--; | |
b2ae8066 | 2157 | goto next; |
848aedfd | 2158 | } |
01d7584c | 2159 | |
3202e2f5 | 2160 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
01d7584c LG |
2161 | break; |
2162 | case SNDRV_PCM_TRIGGER_RESUME: | |
3202e2f5 | 2163 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) |
b2ae8066 | 2164 | goto next; |
6479f758 | 2165 | |
848aedfd PLB |
2166 | be->dpcm[stream].be_start++; |
2167 | if (be->dpcm[stream].be_start != 1) | |
2168 | goto next; | |
2169 | ||
a9faca15 | 2170 | ret = soc_pcm_trigger(be_substream, cmd); |
848aedfd PLB |
2171 | if (ret) { |
2172 | be->dpcm[stream].be_start--; | |
b2ae8066 | 2173 | goto next; |
848aedfd | 2174 | } |
01d7584c | 2175 | |
3202e2f5 | 2176 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
01d7584c LG |
2177 | break; |
2178 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
3aa1e96a PLB |
2179 | if (!be->dpcm[stream].be_start && |
2180 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) && | |
3aa1e96a | 2181 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
b2ae8066 | 2182 | goto next; |
6479f758 | 2183 | |
9995c1d0 PLB |
2184 | fe->dpcm[stream].fe_pause = false; |
2185 | be->dpcm[stream].be_pause--; | |
2186 | ||
848aedfd PLB |
2187 | be->dpcm[stream].be_start++; |
2188 | if (be->dpcm[stream].be_start != 1) | |
2189 | goto next; | |
2190 | ||
a9faca15 | 2191 | ret = soc_pcm_trigger(be_substream, cmd); |
848aedfd PLB |
2192 | if (ret) { |
2193 | be->dpcm[stream].be_start--; | |
b2ae8066 | 2194 | goto next; |
848aedfd | 2195 | } |
01d7584c | 2196 | |
3202e2f5 | 2197 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
01d7584c LG |
2198 | break; |
2199 | case SNDRV_PCM_TRIGGER_STOP: | |
21fca8bd | 2200 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) && |
3202e2f5 | 2201 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
b2ae8066 | 2202 | goto next; |
01d7584c | 2203 | |
848aedfd PLB |
2204 | if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START) |
2205 | be->dpcm[stream].be_start--; | |
2206 | ||
2207 | if (be->dpcm[stream].be_start != 0) | |
b2ae8066 | 2208 | goto next; |
0c75fc71 | 2209 | |
9995c1d0 PLB |
2210 | pause_stop_transition = false; |
2211 | if (fe->dpcm[stream].fe_pause) { | |
2212 | pause_stop_transition = true; | |
2213 | fe->dpcm[stream].fe_pause = false; | |
2214 | be->dpcm[stream].be_pause--; | |
2215 | } | |
2216 | ||
2217 | if (be->dpcm[stream].be_pause != 0) | |
2218 | ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
2219 | else | |
2220 | ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_STOP); | |
2221 | ||
848aedfd PLB |
2222 | if (ret) { |
2223 | if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START) | |
2224 | be->dpcm[stream].be_start++; | |
9995c1d0 PLB |
2225 | if (pause_stop_transition) { |
2226 | fe->dpcm[stream].fe_pause = true; | |
2227 | be->dpcm[stream].be_pause++; | |
2228 | } | |
b2ae8066 | 2229 | goto next; |
848aedfd | 2230 | } |
01d7584c | 2231 | |
9995c1d0 PLB |
2232 | if (be->dpcm[stream].be_pause != 0) |
2233 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
2234 | else | |
2235 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; | |
2236 | ||
01d7584c LG |
2237 | break; |
2238 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
3202e2f5 | 2239 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
b2ae8066 | 2240 | goto next; |
01d7584c | 2241 | |
848aedfd PLB |
2242 | be->dpcm[stream].be_start--; |
2243 | if (be->dpcm[stream].be_start != 0) | |
b2ae8066 | 2244 | goto next; |
01d7584c | 2245 | |
a9faca15 | 2246 | ret = soc_pcm_trigger(be_substream, cmd); |
848aedfd PLB |
2247 | if (ret) { |
2248 | be->dpcm[stream].be_start++; | |
b2ae8066 | 2249 | goto next; |
848aedfd | 2250 | } |
01d7584c | 2251 | |
3202e2f5 | 2252 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; |
01d7584c LG |
2253 | break; |
2254 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
3202e2f5 | 2255 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
b2ae8066 | 2256 | goto next; |
01d7584c | 2257 | |
9995c1d0 PLB |
2258 | fe->dpcm[stream].fe_pause = true; |
2259 | be->dpcm[stream].be_pause++; | |
2260 | ||
848aedfd PLB |
2261 | be->dpcm[stream].be_start--; |
2262 | if (be->dpcm[stream].be_start != 0) | |
b2ae8066 | 2263 | goto next; |
01d7584c | 2264 | |
a9faca15 | 2265 | ret = soc_pcm_trigger(be_substream, cmd); |
848aedfd PLB |
2266 | if (ret) { |
2267 | be->dpcm[stream].be_start++; | |
b2ae8066 | 2268 | goto next; |
848aedfd | 2269 | } |
01d7584c | 2270 | |
3202e2f5 | 2271 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
01d7584c LG |
2272 | break; |
2273 | } | |
b2ae8066 TI |
2274 | next: |
2275 | snd_soc_dpcm_stream_unlock_irqrestore(be, stream, flags); | |
2276 | if (ret) | |
2277 | break; | |
01d7584c | 2278 | } |
04110728 | 2279 | return soc_pcm_ret(fe, ret); |
01d7584c LG |
2280 | } |
2281 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); | |
2282 | ||
acbf2774 RS |
2283 | static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream, |
2284 | int cmd, bool fe_first) | |
2285 | { | |
0ceef681 | 2286 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
acbf2774 RS |
2287 | int ret; |
2288 | ||
2289 | /* call trigger on the frontend before the backend. */ | |
2290 | if (fe_first) { | |
2291 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", | |
2292 | fe->dai_link->name, cmd); | |
2293 | ||
2294 | ret = soc_pcm_trigger(substream, cmd); | |
2295 | if (ret < 0) | |
2296 | return ret; | |
2297 | ||
2298 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
2299 | return ret; | |
2300 | } | |
2301 | ||
2302 | /* call trigger on the frontend after the backend. */ | |
2303 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); | |
2304 | if (ret < 0) | |
2305 | return ret; | |
2306 | ||
2307 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", | |
2308 | fe->dai_link->name, cmd); | |
2309 | ||
2310 | ret = soc_pcm_trigger(substream, cmd); | |
2311 | ||
2312 | return ret; | |
2313 | } | |
2314 | ||
ea9d0d77 | 2315 | static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) |
01d7584c | 2316 | { |
0ceef681 | 2317 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
acbf2774 RS |
2318 | int stream = substream->stream; |
2319 | int ret = 0; | |
01d7584c LG |
2320 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
2321 | ||
2322 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; | |
2323 | ||
2324 | switch (trigger) { | |
2325 | case SND_SOC_DPCM_TRIGGER_PRE: | |
acbf2774 RS |
2326 | switch (cmd) { |
2327 | case SNDRV_PCM_TRIGGER_START: | |
2328 | case SNDRV_PCM_TRIGGER_RESUME: | |
2329 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
4c22b80f | 2330 | case SNDRV_PCM_TRIGGER_DRAIN: |
acbf2774 RS |
2331 | ret = dpcm_dai_trigger_fe_be(substream, cmd, true); |
2332 | break; | |
2333 | case SNDRV_PCM_TRIGGER_STOP: | |
2334 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
2335 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
2336 | ret = dpcm_dai_trigger_fe_be(substream, cmd, false); | |
2337 | break; | |
2338 | default: | |
2339 | ret = -EINVAL; | |
2340 | break; | |
01d7584c | 2341 | } |
01d7584c LG |
2342 | break; |
2343 | case SND_SOC_DPCM_TRIGGER_POST: | |
acbf2774 RS |
2344 | switch (cmd) { |
2345 | case SNDRV_PCM_TRIGGER_START: | |
2346 | case SNDRV_PCM_TRIGGER_RESUME: | |
2347 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
4c22b80f | 2348 | case SNDRV_PCM_TRIGGER_DRAIN: |
acbf2774 RS |
2349 | ret = dpcm_dai_trigger_fe_be(substream, cmd, false); |
2350 | break; | |
2351 | case SNDRV_PCM_TRIGGER_STOP: | |
2352 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
2353 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
2354 | ret = dpcm_dai_trigger_fe_be(substream, cmd, true); | |
2355 | break; | |
2356 | default: | |
2357 | ret = -EINVAL; | |
2358 | break; | |
01d7584c | 2359 | } |
01d7584c | 2360 | break; |
07bf84aa LG |
2361 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
2362 | /* bespoke trigger() - handles both FE and BEs */ | |
2363 | ||
103d84a3 | 2364 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
07bf84aa LG |
2365 | fe->dai_link->name, cmd); |
2366 | ||
30819358 | 2367 | ret = snd_soc_pcm_dai_bespoke_trigger(substream, cmd); |
07bf84aa | 2368 | break; |
01d7584c | 2369 | default: |
103d84a3 | 2370 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
01d7584c LG |
2371 | fe->dai_link->name); |
2372 | ret = -EINVAL; | |
2373 | goto out; | |
2374 | } | |
2375 | ||
acbf2774 RS |
2376 | if (ret < 0) { |
2377 | dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n", | |
2378 | cmd, ret); | |
2379 | goto out; | |
2380 | } | |
2381 | ||
01d7584c LG |
2382 | switch (cmd) { |
2383 | case SNDRV_PCM_TRIGGER_START: | |
2384 | case SNDRV_PCM_TRIGGER_RESUME: | |
2385 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
2386 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; | |
2387 | break; | |
2388 | case SNDRV_PCM_TRIGGER_STOP: | |
2389 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
01d7584c LG |
2390 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; |
2391 | break; | |
9f169b9f PL |
2392 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
2393 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; | |
2394 | break; | |
01d7584c LG |
2395 | } |
2396 | ||
2397 | out: | |
2398 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; | |
2399 | return ret; | |
2400 | } | |
2401 | ||
ea9d0d77 TI |
2402 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
2403 | { | |
0ceef681 | 2404 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
ea9d0d77 TI |
2405 | int stream = substream->stream; |
2406 | ||
2407 | /* if FE's runtime_update is already set, we're in race; | |
2408 | * process this trigger later at exit | |
2409 | */ | |
2410 | if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) { | |
2411 | fe->dpcm[stream].trigger_pending = cmd + 1; | |
2412 | return 0; /* delayed, assuming it's successful */ | |
2413 | } | |
2414 | ||
2415 | /* we're alone, let's trigger */ | |
2416 | return dpcm_fe_dai_do_trigger(substream, cmd); | |
2417 | } | |
2418 | ||
23607025 | 2419 | int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) |
01d7584c LG |
2420 | { |
2421 | struct snd_soc_dpcm *dpcm; | |
2422 | int ret = 0; | |
2423 | ||
8d6258a4 | 2424 | for_each_dpcm_be(fe, stream, dpcm) { |
01d7584c LG |
2425 | |
2426 | struct snd_soc_pcm_runtime *be = dpcm->be; | |
2427 | struct snd_pcm_substream *be_substream = | |
2428 | snd_soc_dpcm_get_substream(be, stream); | |
2429 | ||
2430 | /* is this op for this BE ? */ | |
2431 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
2432 | continue; | |
2433 | ||
e123036b RS |
2434 | if (!snd_soc_dpcm_can_be_prepared(fe, be, stream)) |
2435 | continue; | |
2436 | ||
01d7584c | 2437 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
95f444dc | 2438 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
5087a8f1 LY |
2439 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) && |
2440 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) | |
01d7584c LG |
2441 | continue; |
2442 | ||
103d84a3 | 2443 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
94d215cc | 2444 | be->dai_link->name); |
01d7584c | 2445 | |
b7898396 | 2446 | ret = __soc_pcm_prepare(be, be_substream); |
dab7eeb4 | 2447 | if (ret < 0) |
01d7584c | 2448 | break; |
01d7584c LG |
2449 | |
2450 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; | |
2451 | } | |
273db971 | 2452 | |
04110728 | 2453 | return soc_pcm_ret(fe, ret); |
01d7584c LG |
2454 | } |
2455 | ||
45c0a188 | 2456 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
01d7584c | 2457 | { |
0ceef681 | 2458 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(substream); |
01d7584c LG |
2459 | int stream = substream->stream, ret = 0; |
2460 | ||
b7898396 | 2461 | snd_soc_dpcm_mutex_lock(fe); |
01d7584c | 2462 | |
103d84a3 | 2463 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
01d7584c | 2464 | |
ea9d0d77 | 2465 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
01d7584c LG |
2466 | |
2467 | /* there is no point preparing this FE if there are no BEs */ | |
2468 | if (list_empty(&fe->dpcm[stream].be_clients)) { | |
1f566435 HG |
2469 | /* dev_err_once() for visibility, dev_dbg() for debugging UCM profiles */ |
2470 | dev_err_once(fe->dev, "ASoC: no backend DAIs enabled for %s, possibly missing ALSA mixer-based routing or UCM profile\n", | |
2471 | fe->dai_link->name); | |
2472 | dev_dbg(fe->dev, "ASoC: no backend DAIs enabled for %s\n", | |
2473 | fe->dai_link->name); | |
01d7584c LG |
2474 | ret = -EINVAL; |
2475 | goto out; | |
2476 | } | |
2477 | ||
25c2f515 | 2478 | ret = dpcm_be_dai_prepare(fe, stream); |
01d7584c LG |
2479 | if (ret < 0) |
2480 | goto out; | |
2481 | ||
2482 | /* call prepare on the frontend */ | |
b7898396 | 2483 | ret = __soc_pcm_prepare(fe, substream); |
dab7eeb4 | 2484 | if (ret < 0) |
01d7584c | 2485 | goto out; |
01d7584c | 2486 | |
01d7584c LG |
2487 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
2488 | ||
2489 | out: | |
ea9d0d77 | 2490 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
b7898396 | 2491 | snd_soc_dpcm_mutex_unlock(fe); |
01d7584c | 2492 | |
04110728 | 2493 | return soc_pcm_ret(fe, ret); |
01d7584c LG |
2494 | } |
2495 | ||
618dae11 LG |
2496 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
2497 | { | |
07bf84aa LG |
2498 | struct snd_pcm_substream *substream = |
2499 | snd_soc_dpcm_get_substream(fe, stream); | |
2500 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; | |
618dae11 LG |
2501 | int err; |
2502 | ||
103d84a3 | 2503 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
618dae11 LG |
2504 | stream ? "capture" : "playback", fe->dai_link->name); |
2505 | ||
07bf84aa LG |
2506 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
2507 | /* call bespoke trigger - FE takes care of all BE triggers */ | |
103d84a3 | 2508 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
07bf84aa LG |
2509 | fe->dai_link->name); |
2510 | ||
30819358 | 2511 | err = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
07bf84aa | 2512 | } else { |
103d84a3 | 2513 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
07bf84aa LG |
2514 | fe->dai_link->name); |
2515 | ||
2516 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); | |
07bf84aa | 2517 | } |
618dae11 | 2518 | |
f52366e6 | 2519 | dpcm_be_dai_hw_free(fe, stream); |
618dae11 | 2520 | |
531590bb | 2521 | dpcm_be_dai_shutdown(fe, stream); |
618dae11 LG |
2522 | |
2523 | /* run the stream event for each BE */ | |
2524 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
2525 | ||
04110728 | 2526 | return soc_pcm_ret(fe, err); |
618dae11 LG |
2527 | } |
2528 | ||
2529 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) | |
2530 | { | |
07bf84aa LG |
2531 | struct snd_pcm_substream *substream = |
2532 | snd_soc_dpcm_get_substream(fe, stream); | |
618dae11 | 2533 | struct snd_soc_dpcm *dpcm; |
07bf84aa | 2534 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
4eeed5f4 | 2535 | int ret = 0; |
618dae11 | 2536 | |
103d84a3 | 2537 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
618dae11 LG |
2538 | stream ? "capture" : "playback", fe->dai_link->name); |
2539 | ||
2540 | /* Only start the BE if the FE is ready */ | |
2541 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || | |
2c138284 | 2542 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) { |
2543 | dev_err(fe->dev, "ASoC: FE %s is not ready %d\n", | |
2544 | fe->dai_link->name, fe->dpcm[stream].state); | |
e91b65b3 | 2545 | ret = -EINVAL; |
2c138284 | 2546 | goto disconnect; |
2547 | } | |
618dae11 LG |
2548 | |
2549 | /* startup must always be called for new BEs */ | |
2550 | ret = dpcm_be_dai_startup(fe, stream); | |
fffc0ca2 | 2551 | if (ret < 0) |
618dae11 | 2552 | goto disconnect; |
618dae11 LG |
2553 | |
2554 | /* keep going if FE state is > open */ | |
2555 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) | |
2556 | return 0; | |
01d7584c | 2557 | |
618dae11 | 2558 | ret = dpcm_be_dai_hw_params(fe, stream); |
fffc0ca2 | 2559 | if (ret < 0) |
618dae11 | 2560 | goto close; |
618dae11 LG |
2561 | |
2562 | /* keep going if FE state is > hw_params */ | |
2563 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) | |
2564 | return 0; | |
2565 | ||
618dae11 | 2566 | ret = dpcm_be_dai_prepare(fe, stream); |
fffc0ca2 | 2567 | if (ret < 0) |
618dae11 | 2568 | goto hw_free; |
618dae11 LG |
2569 | |
2570 | /* run the stream event for each BE */ | |
2571 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); | |
2572 | ||
2573 | /* keep going if FE state is > prepare */ | |
2574 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || | |
2575 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) | |
2576 | return 0; | |
2577 | ||
07bf84aa LG |
2578 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
2579 | /* call trigger on the frontend - FE takes care of all BE triggers */ | |
103d84a3 | 2580 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
07bf84aa | 2581 | fe->dai_link->name); |
618dae11 | 2582 | |
30819358 | 2583 | ret = snd_soc_pcm_dai_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
62462e01 | 2584 | if (ret < 0) |
07bf84aa | 2585 | goto hw_free; |
07bf84aa | 2586 | } else { |
103d84a3 | 2587 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
07bf84aa LG |
2588 | fe->dai_link->name); |
2589 | ||
2590 | ret = dpcm_be_dai_trigger(fe, stream, | |
2591 | SNDRV_PCM_TRIGGER_START); | |
db3aa39c | 2592 | if (ret < 0) |
07bf84aa | 2593 | goto hw_free; |
618dae11 LG |
2594 | } |
2595 | ||
2596 | return 0; | |
2597 | ||
2598 | hw_free: | |
2599 | dpcm_be_dai_hw_free(fe, stream); | |
2600 | close: | |
2601 | dpcm_be_dai_shutdown(fe, stream); | |
2602 | disconnect: | |
2c138284 | 2603 | /* disconnect any pending BEs */ |
8d6258a4 | 2604 | for_each_dpcm_be(fe, stream, dpcm) { |
618dae11 | 2605 | struct snd_soc_pcm_runtime *be = dpcm->be; |
2c138284 | 2606 | |
2607 | /* is this op for this BE ? */ | |
2608 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) | |
2609 | continue; | |
2610 | ||
2611 | if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE || | |
2612 | be->dpcm[stream].state == SND_SOC_DPCM_STATE_NEW) | |
2613 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
618dae11 LG |
2614 | } |
2615 | ||
04110728 | 2616 | return soc_pcm_ret(fe, ret); |
618dae11 LG |
2617 | } |
2618 | ||
de15d7ff | 2619 | static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new) |
618dae11 | 2620 | { |
de15d7ff | 2621 | struct snd_soc_dapm_widget_list *list; |
7083f877 | 2622 | int stream; |
de15d7ff | 2623 | int count, paths; |
618dae11 | 2624 | |
96bf62f0 PLB |
2625 | if (!fe->dai_link->dynamic) |
2626 | return 0; | |
2627 | ||
3989ade2 | 2628 | if (fe->dai_link->num_cpus > 1) { |
6e1276a5 BL |
2629 | dev_err(fe->dev, |
2630 | "%s doesn't support Multi CPU yet\n", __func__); | |
2631 | return -EINVAL; | |
2632 | } | |
2633 | ||
de15d7ff | 2634 | /* only check active links */ |
b3dea624 | 2635 | if (!snd_soc_dai_active(asoc_rtd_to_cpu(fe, 0))) |
de15d7ff | 2636 | return 0; |
618dae11 | 2637 | |
de15d7ff JB |
2638 | /* DAPM sync will call this to update DSP paths */ |
2639 | dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n", | |
2640 | new ? "new" : "old", fe->dai_link->name); | |
618dae11 | 2641 | |
7083f877 | 2642 | for_each_pcm_streams(stream) { |
618dae11 | 2643 | |
7083f877 | 2644 | /* skip if FE doesn't have playback/capture capability */ |
c2233a26 KM |
2645 | if (!snd_soc_dai_stream_valid(asoc_rtd_to_cpu(fe, 0), stream) || |
2646 | !snd_soc_dai_stream_valid(asoc_rtd_to_codec(fe, 0), stream)) | |
7083f877 | 2647 | continue; |
de15d7ff | 2648 | |
7083f877 | 2649 | /* skip if FE isn't currently playing/capturing */ |
b3dea624 KM |
2650 | if (!snd_soc_dai_stream_active(asoc_rtd_to_cpu(fe, 0), stream) || |
2651 | !snd_soc_dai_stream_active(asoc_rtd_to_codec(fe, 0), stream)) | |
7083f877 | 2652 | continue; |
075207d2 | 2653 | |
7083f877 | 2654 | paths = dpcm_path_get(fe, stream, &list); |
d479f00b | 2655 | if (paths < 0) |
7083f877 | 2656 | return paths; |
618dae11 | 2657 | |
7083f877 KM |
2658 | /* update any playback/capture paths */ |
2659 | count = dpcm_process_paths(fe, stream, &list, new); | |
2660 | if (count) { | |
580dff36 | 2661 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); |
7083f877 | 2662 | if (new) |
81c82a9e | 2663 | dpcm_run_update_startup(fe, stream); |
7083f877 | 2664 | else |
81c82a9e | 2665 | dpcm_run_update_shutdown(fe, stream); |
580dff36 | 2666 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
618dae11 | 2667 | |
7083f877 KM |
2668 | dpcm_clear_pending_state(fe, stream); |
2669 | dpcm_be_disconnect(fe, stream); | |
2670 | } | |
618dae11 | 2671 | |
7083f877 | 2672 | dpcm_path_put(&list); |
618dae11 LG |
2673 | } |
2674 | ||
618dae11 LG |
2675 | return 0; |
2676 | } | |
de15d7ff JB |
2677 | |
2678 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and | |
2679 | * any DAI links. | |
2680 | */ | |
f17a1478 | 2681 | int snd_soc_dpcm_runtime_update(struct snd_soc_card *card) |
de15d7ff JB |
2682 | { |
2683 | struct snd_soc_pcm_runtime *fe; | |
2684 | int ret = 0; | |
2685 | ||
38e42f6d | 2686 | snd_soc_dpcm_mutex_lock(card); |
de15d7ff | 2687 | /* shutdown all old paths first */ |
bcb1fd1f | 2688 | for_each_card_rtds(card, fe) { |
de15d7ff JB |
2689 | ret = soc_dpcm_fe_runtime_update(fe, 0); |
2690 | if (ret) | |
2691 | goto out; | |
2692 | } | |
2693 | ||
2694 | /* bring new paths up */ | |
bcb1fd1f | 2695 | for_each_card_rtds(card, fe) { |
de15d7ff JB |
2696 | ret = soc_dpcm_fe_runtime_update(fe, 1); |
2697 | if (ret) | |
2698 | goto out; | |
2699 | } | |
2700 | ||
2701 | out: | |
38e42f6d | 2702 | snd_soc_dpcm_mutex_unlock(card); |
de15d7ff JB |
2703 | return ret; |
2704 | } | |
f17a1478 | 2705 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_runtime_update); |
01d7584c | 2706 | |
265694b6 | 2707 | static void dpcm_fe_dai_cleanup(struct snd_pcm_substream *fe_substream) |
01d7584c | 2708 | { |
0ceef681 | 2709 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
01d7584c | 2710 | struct snd_soc_dpcm *dpcm; |
265694b6 | 2711 | int stream = fe_substream->stream; |
30fca26f | 2712 | |
b7898396 TI |
2713 | snd_soc_dpcm_mutex_assert_held(fe); |
2714 | ||
30fca26f KM |
2715 | /* mark FE's links ready to prune */ |
2716 | for_each_dpcm_be(fe, stream, dpcm) | |
2717 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; | |
2718 | ||
2719 | dpcm_be_disconnect(fe, stream); | |
265694b6 KM |
2720 | } |
2721 | ||
2722 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) | |
2723 | { | |
0ceef681 | 2724 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
265694b6 KM |
2725 | int ret; |
2726 | ||
b7898396 | 2727 | snd_soc_dpcm_mutex_lock(fe); |
265694b6 KM |
2728 | ret = dpcm_fe_dai_shutdown(fe_substream); |
2729 | ||
2730 | dpcm_fe_dai_cleanup(fe_substream); | |
2731 | ||
b7898396 | 2732 | snd_soc_dpcm_mutex_unlock(fe); |
30fca26f KM |
2733 | return ret; |
2734 | } | |
2735 | ||
45c0a188 | 2736 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
01d7584c | 2737 | { |
0ceef681 | 2738 | struct snd_soc_pcm_runtime *fe = asoc_substream_to_rtd(fe_substream); |
01d7584c LG |
2739 | struct snd_soc_dapm_widget_list *list; |
2740 | int ret; | |
2741 | int stream = fe_substream->stream; | |
2742 | ||
b7898396 | 2743 | snd_soc_dpcm_mutex_lock(fe); |
01d7584c | 2744 | |
8f70e515 | 2745 | ret = dpcm_path_get(fe, stream, &list); |
d479f00b | 2746 | if (ret < 0) |
cae06eb9 | 2747 | goto open_end; |
01d7584c LG |
2748 | |
2749 | /* calculate valid and active FE <-> BE dpcms */ | |
2750 | dpcm_process_paths(fe, stream, &list, 1); | |
2751 | ||
2752 | ret = dpcm_fe_dai_startup(fe_substream); | |
265694b6 KM |
2753 | if (ret < 0) |
2754 | dpcm_fe_dai_cleanup(fe_substream); | |
01d7584c LG |
2755 | |
2756 | dpcm_clear_pending_state(fe, stream); | |
2757 | dpcm_path_put(&list); | |
cae06eb9 | 2758 | open_end: |
b7898396 | 2759 | snd_soc_dpcm_mutex_unlock(fe); |
01d7584c LG |
2760 | return ret; |
2761 | } | |
2762 | ||
7fc6bebd KM |
2763 | static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, |
2764 | int *playback, int *capture) | |
ddee627c | 2765 | { |
cfcb31c4 | 2766 | struct snd_soc_dai_link *dai_link = rtd->dai_link; |
19bdcc7a | 2767 | struct snd_soc_dai *cpu_dai; |
c3e9b6d6 KM |
2768 | int has_playback = 0; |
2769 | int has_capture = 0; | |
2e5894d7 | 2770 | int i; |
ddee627c | 2771 | |
cfcb31c4 | 2772 | if (dai_link->dynamic && dai_link->num_cpus > 1) { |
a1c0221f | 2773 | dev_err(rtd->dev, "DPCM doesn't support Multi CPU for Front-Ends yet\n"); |
b73287f0 PLB |
2774 | return -EINVAL; |
2775 | } | |
2776 | ||
cfcb31c4 | 2777 | if (dai_link->dynamic || dai_link->no_pcm) { |
940a1f43 KM |
2778 | int stream; |
2779 | ||
cfcb31c4 | 2780 | if (dai_link->dpcm_playback) { |
b73287f0 PLB |
2781 | stream = SNDRV_PCM_STREAM_PLAYBACK; |
2782 | ||
4f872154 PLB |
2783 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
2784 | if (snd_soc_dai_stream_valid(cpu_dai, stream)) { | |
c3e9b6d6 | 2785 | has_playback = 1; |
4f872154 | 2786 | break; |
b73287f0 | 2787 | } |
4f872154 | 2788 | } |
c3e9b6d6 | 2789 | if (!has_playback) { |
4f872154 PLB |
2790 | dev_err(rtd->card->dev, |
2791 | "No CPU DAIs support playback for stream %s\n", | |
cfcb31c4 | 2792 | dai_link->stream_name); |
4f872154 PLB |
2793 | return -EINVAL; |
2794 | } | |
b73287f0 | 2795 | } |
cfcb31c4 | 2796 | if (dai_link->dpcm_capture) { |
b73287f0 PLB |
2797 | stream = SNDRV_PCM_STREAM_CAPTURE; |
2798 | ||
4f872154 PLB |
2799 | for_each_rtd_cpu_dais(rtd, i, cpu_dai) { |
2800 | if (snd_soc_dai_stream_valid(cpu_dai, stream)) { | |
c3e9b6d6 | 2801 | has_capture = 1; |
4f872154 | 2802 | break; |
b73287f0 | 2803 | } |
4f872154 PLB |
2804 | } |
2805 | ||
c3e9b6d6 | 2806 | if (!has_capture) { |
4f872154 PLB |
2807 | dev_err(rtd->card->dev, |
2808 | "No CPU DAIs support capture for stream %s\n", | |
cfcb31c4 | 2809 | dai_link->stream_name); |
4f872154 PLB |
2810 | return -EINVAL; |
2811 | } | |
9b5db059 | 2812 | } |
01d7584c | 2813 | } else { |
940a1f43 KM |
2814 | struct snd_soc_dai *codec_dai; |
2815 | ||
a342031c | 2816 | /* Adapt stream for codec2codec links */ |
1c943f60 KM |
2817 | int cpu_capture = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_CAPTURE); |
2818 | int cpu_playback = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_PLAYBACK); | |
a342031c | 2819 | |
a4be4187 | 2820 | for_each_rtd_codec_dais(rtd, i, codec_dai) { |
cfcb31c4 | 2821 | if (dai_link->num_cpus == 1) { |
c2233a26 | 2822 | cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
cfcb31c4 | 2823 | } else if (dai_link->num_cpus == dai_link->num_codecs) { |
c2233a26 | 2824 | cpu_dai = asoc_rtd_to_cpu(rtd, i); |
ac950278 BL |
2825 | } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) { |
2826 | int cpu_id; | |
2827 | ||
2828 | if (!rtd->dai_link->codec_ch_maps) { | |
2829 | dev_err(rtd->card->dev, "%s: no codec channel mapping table provided\n", | |
2830 | __func__); | |
2831 | return -EINVAL; | |
2832 | } | |
2833 | ||
2834 | cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id; | |
2835 | cpu_dai = asoc_rtd_to_cpu(rtd, cpu_id); | |
19bdcc7a SN |
2836 | } else { |
2837 | dev_err(rtd->card->dev, | |
ac950278 BL |
2838 | "%s codec number %d < cpu number %d is not supported\n", |
2839 | __func__, rtd->dai_link->num_codecs, | |
2840 | rtd->dai_link->num_cpus); | |
19bdcc7a SN |
2841 | return -EINVAL; |
2842 | } | |
2843 | ||
467fece8 | 2844 | if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && |
a4877a6f | 2845 | snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) |
c3e9b6d6 | 2846 | has_playback = 1; |
467fece8 | 2847 | if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && |
a4877a6f | 2848 | snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) |
c3e9b6d6 | 2849 | has_capture = 1; |
2e5894d7 | 2850 | } |
01d7584c LG |
2851 | } |
2852 | ||
e1f653ce | 2853 | if (dai_link->playback_only) |
c3e9b6d6 | 2854 | has_capture = 0; |
d6bead02 | 2855 | |
e1f653ce | 2856 | if (dai_link->capture_only) |
c3e9b6d6 | 2857 | has_playback = 0; |
d6bead02 | 2858 | |
c3e9b6d6 | 2859 | if (!has_playback && !has_capture) { |
092830cf | 2860 | dev_err(rtd->dev, "substream %s has no playback, no capture\n", |
cfcb31c4 | 2861 | dai_link->stream_name); |
092830cf KM |
2862 | |
2863 | return -EINVAL; | |
2864 | } | |
2865 | ||
c3e9b6d6 KM |
2866 | *playback = has_playback; |
2867 | *capture = has_capture; | |
2868 | ||
7fc6bebd KM |
2869 | return 0; |
2870 | } | |
2871 | ||
2b39123b KM |
2872 | static int soc_create_pcm(struct snd_pcm **pcm, |
2873 | struct snd_soc_pcm_runtime *rtd, | |
2874 | int playback, int capture, int num) | |
7fc6bebd | 2875 | { |
7fc6bebd | 2876 | char new_name[64]; |
2b39123b | 2877 | int ret; |
7fc6bebd | 2878 | |
01d7584c | 2879 | /* create the PCM */ |
7ddc7f91 | 2880 | if (rtd->dai_link->c2c_params) { |
a342031c JB |
2881 | snprintf(new_name, sizeof(new_name), "codec2codec(%s)", |
2882 | rtd->dai_link->stream_name); | |
2883 | ||
2884 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2b39123b | 2885 | playback, capture, pcm); |
a342031c | 2886 | } else if (rtd->dai_link->no_pcm) { |
01d7584c LG |
2887 | snprintf(new_name, sizeof(new_name), "(%s)", |
2888 | rtd->dai_link->stream_name); | |
2889 | ||
2890 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, | |
2b39123b | 2891 | playback, capture, pcm); |
01d7584c LG |
2892 | } else { |
2893 | if (rtd->dai_link->dynamic) | |
2894 | snprintf(new_name, sizeof(new_name), "%s (*)", | |
2895 | rtd->dai_link->stream_name); | |
2896 | else | |
2897 | snprintf(new_name, sizeof(new_name), "%s %s-%d", | |
2e5894d7 | 2898 | rtd->dai_link->stream_name, |
6fb8944c | 2899 | soc_codec_dai_name(rtd), num); |
01d7584c LG |
2900 | |
2901 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, | |
2b39123b | 2902 | capture, pcm); |
01d7584c | 2903 | } |
ddee627c | 2904 | if (ret < 0) { |
799827a4 PLB |
2905 | dev_err(rtd->card->dev, "ASoC: can't create pcm %s for dailink %s: %d\n", |
2906 | new_name, rtd->dai_link->name, ret); | |
ddee627c LG |
2907 | return ret; |
2908 | } | |
103d84a3 | 2909 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
ddee627c | 2910 | |
2b39123b KM |
2911 | return 0; |
2912 | } | |
2913 | ||
2914 | /* create a new pcm */ | |
2915 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) | |
2916 | { | |
2917 | struct snd_soc_component *component; | |
2918 | struct snd_pcm *pcm; | |
2919 | int ret = 0, playback = 0, capture = 0; | |
2920 | int i; | |
2921 | ||
2922 | ret = soc_get_playback_capture(rtd, &playback, &capture); | |
2923 | if (ret < 0) | |
2924 | return ret; | |
2925 | ||
2926 | ret = soc_create_pcm(&pcm, rtd, playback, capture, num); | |
2927 | if (ret < 0) | |
2928 | return ret; | |
2929 | ||
ddee627c | 2930 | /* DAPM dai link stream work */ |
10d5d8cb KM |
2931 | /* |
2932 | * Currently nothing to do for c2c links | |
2933 | * Since c2c links are internal nodes in the DAPM graph and | |
2934 | * don't interface with the outside world or application layer | |
2935 | * we don't have to do any special handling on close. | |
2936 | */ | |
7ddc7f91 | 2937 | if (!rtd->dai_link->c2c_params) |
83f94a2e | 2938 | rtd->close_delayed_work_func = snd_soc_close_delayed_work; |
ddee627c LG |
2939 | |
2940 | rtd->pcm = pcm; | |
e04e7b8c | 2941 | pcm->nonatomic = rtd->dai_link->nonatomic; |
ddee627c | 2942 | pcm->private_data = rtd; |
4d45d944 | 2943 | pcm->no_device_suspend = true; |
01d7584c | 2944 | |
7ddc7f91 | 2945 | if (rtd->dai_link->no_pcm || rtd->dai_link->c2c_params) { |
01d7584c LG |
2946 | if (playback) |
2947 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; | |
2948 | if (capture) | |
2949 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; | |
2950 | goto out; | |
2951 | } | |
2952 | ||
2953 | /* ASoC PCM operations */ | |
2954 | if (rtd->dai_link->dynamic) { | |
2955 | rtd->ops.open = dpcm_fe_dai_open; | |
2956 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; | |
2957 | rtd->ops.prepare = dpcm_fe_dai_prepare; | |
2958 | rtd->ops.trigger = dpcm_fe_dai_trigger; | |
2959 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; | |
2960 | rtd->ops.close = dpcm_fe_dai_close; | |
2961 | rtd->ops.pointer = soc_pcm_pointer; | |
2962 | } else { | |
2963 | rtd->ops.open = soc_pcm_open; | |
2964 | rtd->ops.hw_params = soc_pcm_hw_params; | |
2965 | rtd->ops.prepare = soc_pcm_prepare; | |
2966 | rtd->ops.trigger = soc_pcm_trigger; | |
2967 | rtd->ops.hw_free = soc_pcm_hw_free; | |
2968 | rtd->ops.close = soc_pcm_close; | |
2969 | rtd->ops.pointer = soc_pcm_pointer; | |
2970 | } | |
2971 | ||
613fb500 | 2972 | for_each_rtd_components(rtd, i, component) { |
2b544dd7 | 2973 | const struct snd_soc_component_driver *drv = component->driver; |
b8135864 | 2974 | |
3b1c952c TI |
2975 | if (drv->ioctl) |
2976 | rtd->ops.ioctl = snd_soc_pcm_component_ioctl; | |
1e5ddb6b TI |
2977 | if (drv->sync_stop) |
2978 | rtd->ops.sync_stop = snd_soc_pcm_component_sync_stop; | |
66201cac TI |
2979 | if (drv->copy) |
2980 | rtd->ops.copy = snd_soc_pcm_component_copy; | |
e9067bb5 | 2981 | if (drv->page) |
9c712e4f | 2982 | rtd->ops.page = snd_soc_pcm_component_page; |
e9067bb5 | 2983 | if (drv->mmap) |
205875e1 | 2984 | rtd->ops.mmap = snd_soc_pcm_component_mmap; |
8bdfc045 SW |
2985 | if (drv->ack) |
2986 | rtd->ops.ack = snd_soc_pcm_component_ack; | |
ddee627c LG |
2987 | } |
2988 | ||
2989 | if (playback) | |
01d7584c | 2990 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
ddee627c LG |
2991 | |
2992 | if (capture) | |
01d7584c | 2993 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
ddee627c | 2994 | |
b2b2afbb | 2995 | ret = snd_soc_pcm_component_new(rtd); |
60adbd8f | 2996 | if (ret < 0) |
7484291e | 2997 | return ret; |
01d7584c | 2998 | out: |
1d5cd525 | 2999 | dev_dbg(rtd->card->dev, "%s <-> %s mapping ok\n", |
6fb8944c | 3000 | soc_codec_dai_name(rtd), soc_cpu_dai_name(rtd)); |
ddee627c LG |
3001 | return ret; |
3002 | } | |
01d7584c LG |
3003 | |
3004 | /* is the current PCM operation for this FE ? */ | |
3005 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) | |
3006 | { | |
3007 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) | |
3008 | return 1; | |
3009 | return 0; | |
3010 | } | |
3011 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); | |
3012 | ||
3013 | /* is the current PCM operation for this BE ? */ | |
3014 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, | |
3015 | struct snd_soc_pcm_runtime *be, int stream) | |
3016 | { | |
3017 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || | |
3018 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && | |
3019 | be->dpcm[stream].runtime_update)) | |
3020 | return 1; | |
3021 | return 0; | |
3022 | } | |
3023 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); | |
3024 | ||
3025 | /* get the substream for this BE */ | |
3026 | struct snd_pcm_substream * | |
3027 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) | |
3028 | { | |
3029 | return be->pcm->streams[stream].substream; | |
3030 | } | |
3031 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); | |
3032 | ||
085d22be KM |
3033 | static int snd_soc_dpcm_check_state(struct snd_soc_pcm_runtime *fe, |
3034 | struct snd_soc_pcm_runtime *be, | |
3035 | int stream, | |
3036 | const enum snd_soc_dpcm_state *states, | |
3037 | int num_states) | |
01d7584c LG |
3038 | { |
3039 | struct snd_soc_dpcm *dpcm; | |
3040 | int state; | |
a9764869 | 3041 | int ret = 1; |
085d22be | 3042 | int i; |
01d7584c | 3043 | |
d2e24d64 | 3044 | for_each_dpcm_fe(be, stream, dpcm) { |
01d7584c LG |
3045 | |
3046 | if (dpcm->fe == fe) | |
3047 | continue; | |
3048 | ||
3049 | state = dpcm->fe->dpcm[stream].state; | |
085d22be KM |
3050 | for (i = 0; i < num_states; i++) { |
3051 | if (state == states[i]) { | |
3052 | ret = 0; | |
3053 | break; | |
3054 | } | |
a9764869 | 3055 | } |
01d7584c LG |
3056 | } |
3057 | ||
085d22be | 3058 | /* it's safe to do this BE DAI */ |
a9764869 | 3059 | return ret; |
01d7584c | 3060 | } |
085d22be KM |
3061 | |
3062 | /* | |
3063 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE | |
3064 | * are not running, paused or suspended for the specified stream direction. | |
3065 | */ | |
3066 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, | |
3067 | struct snd_soc_pcm_runtime *be, int stream) | |
3068 | { | |
3069 | const enum snd_soc_dpcm_state state[] = { | |
3070 | SND_SOC_DPCM_STATE_START, | |
3071 | SND_SOC_DPCM_STATE_PAUSED, | |
3072 | SND_SOC_DPCM_STATE_SUSPEND, | |
3073 | }; | |
3074 | ||
3075 | return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); | |
3076 | } | |
01d7584c LG |
3077 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); |
3078 | ||
3079 | /* | |
3080 | * We can only change hw params a BE DAI if any of it's FE are not prepared, | |
3081 | * running, paused or suspended for the specified stream direction. | |
3082 | */ | |
3083 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, | |
3084 | struct snd_soc_pcm_runtime *be, int stream) | |
3085 | { | |
085d22be KM |
3086 | const enum snd_soc_dpcm_state state[] = { |
3087 | SND_SOC_DPCM_STATE_START, | |
3088 | SND_SOC_DPCM_STATE_PAUSED, | |
3089 | SND_SOC_DPCM_STATE_SUSPEND, | |
3090 | SND_SOC_DPCM_STATE_PREPARE, | |
3091 | }; | |
01d7584c | 3092 | |
085d22be | 3093 | return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); |
01d7584c LG |
3094 | } |
3095 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); | |
e123036b RS |
3096 | |
3097 | /* | |
3098 | * We can only prepare a BE DAI if any of it's FE are not prepared, | |
3099 | * running or paused for the specified stream direction. | |
3100 | */ | |
3101 | int snd_soc_dpcm_can_be_prepared(struct snd_soc_pcm_runtime *fe, | |
3102 | struct snd_soc_pcm_runtime *be, int stream) | |
3103 | { | |
3104 | const enum snd_soc_dpcm_state state[] = { | |
3105 | SND_SOC_DPCM_STATE_START, | |
3106 | SND_SOC_DPCM_STATE_PAUSED, | |
3107 | SND_SOC_DPCM_STATE_PREPARE, | |
3108 | }; | |
3109 | ||
3110 | return snd_soc_dpcm_check_state(fe, be, stream, state, ARRAY_SIZE(state)); | |
3111 | } | |
3112 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_prepared); |