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7aae816d MB |
1 | /* |
2 | * soc-util.c -- ALSA SoC Audio Layer utility functions | |
3 | * | |
4 | * Copyright 2009 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * Liam Girdwood <lrg@slimlogic.co.uk> | |
8 | * | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | */ | |
15 | ||
848dd8be | 16 | #include <linux/platform_device.h> |
d81a6d71 | 17 | #include <linux/export.h> |
7aae816d MB |
18 | #include <sound/core.h> |
19 | #include <sound/pcm.h> | |
20 | #include <sound/pcm_params.h> | |
21 | #include <sound/soc.h> | |
22 | ||
23 | int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots) | |
24 | { | |
25 | return sample_size * channels * tdm_slots; | |
26 | } | |
27 | EXPORT_SYMBOL_GPL(snd_soc_calc_frame_size); | |
28 | ||
29 | int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params) | |
30 | { | |
31 | int sample_size; | |
32 | ||
3d8b2ce0 MB |
33 | sample_size = snd_pcm_format_width(params_format(params)); |
34 | if (sample_size < 0) | |
35 | return sample_size; | |
7aae816d MB |
36 | |
37 | return snd_soc_calc_frame_size(sample_size, params_channels(params), | |
38 | 1); | |
39 | } | |
40 | EXPORT_SYMBOL_GPL(snd_soc_params_to_frame_size); | |
41 | ||
c0fa59df MB |
42 | int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots) |
43 | { | |
44 | return fs * snd_soc_calc_frame_size(sample_size, channels, tdm_slots); | |
45 | } | |
46 | EXPORT_SYMBOL_GPL(snd_soc_calc_bclk); | |
47 | ||
7aae816d MB |
48 | int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params) |
49 | { | |
50 | int ret; | |
51 | ||
52 | ret = snd_soc_params_to_frame_size(params); | |
53 | ||
54 | if (ret > 0) | |
55 | return ret * params_rate(params); | |
56 | else | |
57 | return ret; | |
58 | } | |
59 | EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk); | |
848dd8be | 60 | |
1b4d9c22 RF |
61 | int snd_soc_component_enable_pin(struct snd_soc_component *component, |
62 | const char *pin) | |
63 | { | |
64 | struct snd_soc_dapm_context *dapm = | |
65 | snd_soc_component_get_dapm(component); | |
66 | char *full_name; | |
67 | int ret; | |
68 | ||
69 | if (!component->name_prefix) | |
70 | return snd_soc_dapm_enable_pin(dapm, pin); | |
71 | ||
72 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
73 | if (!full_name) | |
74 | return -ENOMEM; | |
75 | ||
76 | ret = snd_soc_dapm_enable_pin(dapm, full_name); | |
77 | kfree(full_name); | |
78 | ||
79 | return ret; | |
80 | } | |
81 | EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin); | |
82 | ||
83 | int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component, | |
84 | const char *pin) | |
85 | { | |
86 | struct snd_soc_dapm_context *dapm = | |
87 | snd_soc_component_get_dapm(component); | |
88 | char *full_name; | |
89 | int ret; | |
90 | ||
91 | if (!component->name_prefix) | |
92 | return snd_soc_dapm_enable_pin_unlocked(dapm, pin); | |
93 | ||
94 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
95 | if (!full_name) | |
96 | return -ENOMEM; | |
97 | ||
98 | ret = snd_soc_dapm_enable_pin_unlocked(dapm, full_name); | |
99 | kfree(full_name); | |
100 | ||
101 | return ret; | |
102 | } | |
103 | EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin_unlocked); | |
104 | ||
105 | int snd_soc_component_disable_pin(struct snd_soc_component *component, | |
106 | const char *pin) | |
107 | { | |
108 | struct snd_soc_dapm_context *dapm = | |
109 | snd_soc_component_get_dapm(component); | |
110 | char *full_name; | |
111 | int ret; | |
112 | ||
113 | if (!component->name_prefix) | |
114 | return snd_soc_dapm_disable_pin(dapm, pin); | |
115 | ||
116 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
117 | if (!full_name) | |
118 | return -ENOMEM; | |
119 | ||
120 | ret = snd_soc_dapm_disable_pin(dapm, full_name); | |
121 | kfree(full_name); | |
122 | ||
123 | return ret; | |
124 | } | |
125 | EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin); | |
126 | ||
127 | int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component, | |
128 | const char *pin) | |
129 | { | |
130 | struct snd_soc_dapm_context *dapm = | |
131 | snd_soc_component_get_dapm(component); | |
132 | char *full_name; | |
133 | int ret; | |
134 | ||
135 | if (!component->name_prefix) | |
136 | return snd_soc_dapm_disable_pin_unlocked(dapm, pin); | |
137 | ||
138 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
139 | if (!full_name) | |
140 | return -ENOMEM; | |
141 | ||
142 | ret = snd_soc_dapm_disable_pin_unlocked(dapm, full_name); | |
143 | kfree(full_name); | |
144 | ||
145 | return ret; | |
146 | } | |
147 | EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin_unlocked); | |
148 | ||
149 | int snd_soc_component_nc_pin(struct snd_soc_component *component, | |
150 | const char *pin) | |
151 | { | |
152 | struct snd_soc_dapm_context *dapm = | |
153 | snd_soc_component_get_dapm(component); | |
154 | char *full_name; | |
155 | int ret; | |
156 | ||
157 | if (!component->name_prefix) | |
158 | return snd_soc_dapm_nc_pin(dapm, pin); | |
159 | ||
160 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
161 | if (!full_name) | |
162 | return -ENOMEM; | |
163 | ||
164 | ret = snd_soc_dapm_nc_pin(dapm, full_name); | |
165 | kfree(full_name); | |
166 | ||
167 | return ret; | |
168 | } | |
169 | EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin); | |
170 | ||
171 | int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component, | |
172 | const char *pin) | |
173 | { | |
174 | struct snd_soc_dapm_context *dapm = | |
175 | snd_soc_component_get_dapm(component); | |
176 | char *full_name; | |
177 | int ret; | |
178 | ||
179 | if (!component->name_prefix) | |
180 | return snd_soc_dapm_nc_pin_unlocked(dapm, pin); | |
181 | ||
182 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
183 | if (!full_name) | |
184 | return -ENOMEM; | |
185 | ||
186 | ret = snd_soc_dapm_nc_pin_unlocked(dapm, full_name); | |
187 | kfree(full_name); | |
188 | ||
189 | return ret; | |
190 | } | |
191 | EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin_unlocked); | |
192 | ||
193 | int snd_soc_component_get_pin_status(struct snd_soc_component *component, | |
194 | const char *pin) | |
195 | { | |
196 | struct snd_soc_dapm_context *dapm = | |
197 | snd_soc_component_get_dapm(component); | |
198 | char *full_name; | |
199 | int ret; | |
200 | ||
201 | if (!component->name_prefix) | |
202 | return snd_soc_dapm_get_pin_status(dapm, pin); | |
203 | ||
204 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
205 | if (!full_name) | |
206 | return -ENOMEM; | |
207 | ||
208 | ret = snd_soc_dapm_get_pin_status(dapm, full_name); | |
209 | kfree(full_name); | |
210 | ||
211 | return ret; | |
212 | } | |
213 | EXPORT_SYMBOL_GPL(snd_soc_component_get_pin_status); | |
214 | ||
215 | int snd_soc_component_force_enable_pin(struct snd_soc_component *component, | |
216 | const char *pin) | |
217 | { | |
218 | struct snd_soc_dapm_context *dapm = | |
219 | snd_soc_component_get_dapm(component); | |
220 | char *full_name; | |
221 | int ret; | |
222 | ||
223 | if (!component->name_prefix) | |
224 | return snd_soc_dapm_force_enable_pin(dapm, pin); | |
225 | ||
226 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
227 | if (!full_name) | |
228 | return -ENOMEM; | |
229 | ||
230 | ret = snd_soc_dapm_force_enable_pin(dapm, full_name); | |
231 | kfree(full_name); | |
232 | ||
233 | return ret; | |
234 | } | |
235 | EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin); | |
236 | ||
237 | int snd_soc_component_force_enable_pin_unlocked( | |
238 | struct snd_soc_component *component, | |
239 | const char *pin) | |
240 | { | |
241 | struct snd_soc_dapm_context *dapm = | |
242 | snd_soc_component_get_dapm(component); | |
243 | char *full_name; | |
244 | int ret; | |
245 | ||
246 | if (!component->name_prefix) | |
247 | return snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); | |
248 | ||
249 | full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin); | |
250 | if (!full_name) | |
251 | return -ENOMEM; | |
252 | ||
253 | ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, full_name); | |
254 | kfree(full_name); | |
255 | ||
256 | return ret; | |
257 | } | |
258 | EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked); | |
259 | ||
cefcc03f | 260 | static const struct snd_pcm_hardware dummy_dma_hardware = { |
cefcc03f MB |
261 | /* Random values to keep userspace happy when checking constraints */ |
262 | .info = SNDRV_PCM_INFO_INTERLEAVED | | |
263 | SNDRV_PCM_INFO_BLOCK_TRANSFER, | |
264 | .buffer_bytes_max = 128*1024, | |
265 | .period_bytes_min = PAGE_SIZE, | |
266 | .period_bytes_max = PAGE_SIZE*2, | |
267 | .periods_min = 2, | |
268 | .periods_max = 128, | |
269 | }; | |
270 | ||
271 | static int dummy_dma_open(struct snd_pcm_substream *substream) | |
272 | { | |
7f05cc98 LG |
273 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
274 | ||
275 | /* BE's dont need dummy params */ | |
276 | if (!rtd->dai_link->no_pcm) | |
277 | snd_soc_set_runtime_hwparams(substream, &dummy_dma_hardware); | |
cefcc03f MB |
278 | |
279 | return 0; | |
280 | } | |
281 | ||
115c7254 | 282 | static const struct snd_pcm_ops dummy_dma_ops = { |
cefcc03f MB |
283 | .open = dummy_dma_open, |
284 | .ioctl = snd_pcm_lib_ioctl, | |
285 | }; | |
286 | ||
287 | static struct snd_soc_platform_driver dummy_platform = { | |
288 | .ops = &dummy_dma_ops, | |
289 | }; | |
848dd8be | 290 | |
7aca69f9 | 291 | static struct snd_soc_codec_driver dummy_codec; |
60b6f1a1 SS |
292 | |
293 | #define STUB_RATES SNDRV_PCM_RATE_8000_192000 | |
294 | #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ | |
295 | SNDRV_PCM_FMTBIT_U8 | \ | |
296 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
297 | SNDRV_PCM_FMTBIT_U16_LE | \ | |
298 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
299 | SNDRV_PCM_FMTBIT_U24_LE | \ | |
300 | SNDRV_PCM_FMTBIT_S32_LE | \ | |
301 | SNDRV_PCM_FMTBIT_U32_LE | \ | |
302 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) | |
d76f4198 AP |
303 | /* |
304 | * The dummy CODEC is only meant to be used in situations where there is no | |
305 | * actual hardware. | |
306 | * | |
307 | * If there is actual hardware even if it does not have a control bus | |
308 | * the hardware will still have constraints like supported samplerates, etc. | |
309 | * which should be modelled. And the data flow graph also should be modelled | |
310 | * using DAPM. | |
311 | */ | |
7aca69f9 LG |
312 | static struct snd_soc_dai_driver dummy_dai = { |
313 | .name = "snd-soc-dummy-dai", | |
60b6f1a1 SS |
314 | .playback = { |
315 | .stream_name = "Playback", | |
316 | .channels_min = 1, | |
317 | .channels_max = 384, | |
318 | .rates = STUB_RATES, | |
319 | .formats = STUB_FORMATS, | |
320 | }, | |
321 | .capture = { | |
322 | .stream_name = "Capture", | |
323 | .channels_min = 1, | |
324 | .channels_max = 384, | |
325 | .rates = STUB_RATES, | |
326 | .formats = STUB_FORMATS, | |
327 | }, | |
7aca69f9 LG |
328 | }; |
329 | ||
bece9e95 LG |
330 | int snd_soc_dai_is_dummy(struct snd_soc_dai *dai) |
331 | { | |
332 | if (dai->driver == &dummy_dai) | |
333 | return 1; | |
334 | return 0; | |
335 | } | |
336 | ||
e51e97ee | 337 | static int snd_soc_dummy_probe(struct platform_device *pdev) |
848dd8be | 338 | { |
7aca69f9 LG |
339 | int ret; |
340 | ||
341 | ret = snd_soc_register_codec(&pdev->dev, &dummy_codec, &dummy_dai, 1); | |
342 | if (ret < 0) | |
343 | return ret; | |
344 | ||
345 | ret = snd_soc_register_platform(&pdev->dev, &dummy_platform); | |
346 | if (ret < 0) { | |
347 | snd_soc_unregister_codec(&pdev->dev); | |
348 | return ret; | |
349 | } | |
350 | ||
351 | return ret; | |
848dd8be MB |
352 | } |
353 | ||
e51e97ee | 354 | static int snd_soc_dummy_remove(struct platform_device *pdev) |
848dd8be MB |
355 | { |
356 | snd_soc_unregister_platform(&pdev->dev); | |
7aca69f9 | 357 | snd_soc_unregister_codec(&pdev->dev); |
848dd8be MB |
358 | |
359 | return 0; | |
360 | } | |
361 | ||
362 | static struct platform_driver soc_dummy_driver = { | |
363 | .driver = { | |
364 | .name = "snd-soc-dummy", | |
848dd8be MB |
365 | }, |
366 | .probe = snd_soc_dummy_probe, | |
e51e97ee | 367 | .remove = snd_soc_dummy_remove, |
848dd8be MB |
368 | }; |
369 | ||
370 | static struct platform_device *soc_dummy_dev; | |
371 | ||
fb257897 | 372 | int __init snd_soc_util_init(void) |
848dd8be MB |
373 | { |
374 | int ret; | |
375 | ||
7d0cd223 UKK |
376 | soc_dummy_dev = |
377 | platform_device_register_simple("snd-soc-dummy", -1, NULL, 0); | |
378 | if (IS_ERR(soc_dummy_dev)) | |
379 | return PTR_ERR(soc_dummy_dev); | |
848dd8be MB |
380 | |
381 | ret = platform_driver_register(&soc_dummy_driver); | |
382 | if (ret != 0) | |
383 | platform_device_unregister(soc_dummy_dev); | |
384 | ||
385 | return ret; | |
386 | } | |
848dd8be | 387 | |
fb257897 | 388 | void __exit snd_soc_util_exit(void) |
848dd8be MB |
389 | { |
390 | platform_device_unregister(soc_dummy_dev); | |
391 | platform_driver_unregister(&soc_dummy_driver); | |
392 | } |