Mark Brown | 7aae816 | 2009-11-10 16:08:04 +0000 | [diff] [blame] | 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 | |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 16 | #include <linux/platform_device.h> |
Paul Gortmaker | d81a6d7 | 2011-09-22 09:34:58 -0400 | [diff] [blame] | 17 | #include <linux/export.h> |
Mark Brown | 7aae816 | 2009-11-10 16:08:04 +0000 | [diff] [blame] | 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 | |
Mark Brown | 3d8b2ce | 2011-01-31 20:14:38 +0000 | [diff] [blame] | 33 | sample_size = snd_pcm_format_width(params_format(params)); |
| 34 | if (sample_size < 0) |
| 35 | return sample_size; |
Mark Brown | 7aae816 | 2009-11-10 16:08:04 +0000 | [diff] [blame] | 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 | |
Mark Brown | c0fa59d | 2009-11-19 11:36:10 +0000 | [diff] [blame] | 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 | |
Mark Brown | 7aae816 | 2009-11-10 16:08:04 +0000 | [diff] [blame] | 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); |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 60 | |
Richard Fitzgerald | 1b4d9c2 | 2016-11-29 15:44:38 +0000 | [diff] [blame] | 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 | |
Mark Brown | cefcc03 | 2011-12-05 20:50:45 +0000 | [diff] [blame] | 260 | static const struct snd_pcm_hardware dummy_dma_hardware = { |
Mark Brown | cefcc03 | 2011-12-05 20:50:45 +0000 | [diff] [blame] | 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 | { |
Liam Girdwood | 7f05cc9 | 2013-09-13 18:09:47 +0100 | [diff] [blame] | 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); |
Mark Brown | cefcc03 | 2011-12-05 20:50:45 +0000 | [diff] [blame] | 278 | |
| 279 | return 0; |
| 280 | } |
| 281 | |
Julia Lawall | 115c725 | 2016-09-08 02:35:23 +0200 | [diff] [blame] | 282 | static const struct snd_pcm_ops dummy_dma_ops = { |
Mark Brown | cefcc03 | 2011-12-05 20:50:45 +0000 | [diff] [blame] | 283 | .open = dummy_dma_open, |
| 284 | .ioctl = snd_pcm_lib_ioctl, |
| 285 | }; |
| 286 | |
Bhumika Goyal | c9f3d34 | 2017-08-14 17:08:50 +0530 | [diff] [blame] | 287 | static const struct snd_soc_platform_driver dummy_platform = { |
Mark Brown | cefcc03 | 2011-12-05 20:50:45 +0000 | [diff] [blame] | 288 | .ops = &dummy_dma_ops, |
| 289 | }; |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 290 | |
Liam Girdwood | 7aca69f | 2012-01-09 12:36:24 +0000 | [diff] [blame] | 291 | static struct snd_soc_codec_driver dummy_codec; |
Stas Sergeev | 60b6f1a | 2013-04-17 16:34:06 +0400 | [diff] [blame] | 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) |
Anatol Pomozov | d76f419 | 2015-08-31 08:24:23 -0700 | [diff] [blame] | 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 | */ |
Liam Girdwood | 7aca69f | 2012-01-09 12:36:24 +0000 | [diff] [blame] | 312 | static struct snd_soc_dai_driver dummy_dai = { |
| 313 | .name = "snd-soc-dummy-dai", |
Stas Sergeev | 60b6f1a | 2013-04-17 16:34:06 +0400 | [diff] [blame] | 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 | }, |
Liam Girdwood | 7aca69f | 2012-01-09 12:36:24 +0000 | [diff] [blame] | 328 | }; |
| 329 | |
Liam Girdwood | bece9e9 | 2014-01-08 10:40:18 +0000 | [diff] [blame] | 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 | |
Bill Pemberton | e51e97e | 2012-12-07 09:26:36 -0500 | [diff] [blame] | 337 | static int snd_soc_dummy_probe(struct platform_device *pdev) |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 338 | { |
Liam Girdwood | 7aca69f | 2012-01-09 12:36:24 +0000 | [diff] [blame] | 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; |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 352 | } |
| 353 | |
Bill Pemberton | e51e97e | 2012-12-07 09:26:36 -0500 | [diff] [blame] | 354 | static int snd_soc_dummy_remove(struct platform_device *pdev) |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 355 | { |
| 356 | snd_soc_unregister_platform(&pdev->dev); |
Liam Girdwood | 7aca69f | 2012-01-09 12:36:24 +0000 | [diff] [blame] | 357 | snd_soc_unregister_codec(&pdev->dev); |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 358 | |
| 359 | return 0; |
| 360 | } |
| 361 | |
| 362 | static struct platform_driver soc_dummy_driver = { |
| 363 | .driver = { |
| 364 | .name = "snd-soc-dummy", |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 365 | }, |
| 366 | .probe = snd_soc_dummy_probe, |
Bill Pemberton | e51e97e | 2012-12-07 09:26:36 -0500 | [diff] [blame] | 367 | .remove = snd_soc_dummy_remove, |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 368 | }; |
| 369 | |
| 370 | static struct platform_device *soc_dummy_dev; |
| 371 | |
Mark Brown | fb25789 | 2011-04-28 10:57:54 +0100 | [diff] [blame] | 372 | int __init snd_soc_util_init(void) |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 373 | { |
| 374 | int ret; |
| 375 | |
Uwe Kleine-König | 7d0cd22 | 2013-05-17 11:26:15 +0200 | [diff] [blame] | 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); |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 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 | } |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 387 | |
Mark Brown | fb25789 | 2011-04-28 10:57:54 +0100 | [diff] [blame] | 388 | void __exit snd_soc_util_exit(void) |
Mark Brown | 848dd8b | 2011-04-27 18:16:32 +0100 | [diff] [blame] | 389 | { |
| 390 | platform_device_unregister(soc_dummy_dev); |
| 391 | platform_driver_unregister(&soc_dummy_driver); |
| 392 | } |