1 /* 2 * linux/sound/soc.h -- ALSA SoC Layer 3 * 4 * Author: Liam Girdwood 5 * Created: Aug 11th 2005 6 * Copyright: Wolfson Microelectronics. PLC. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef __LINUX_SND_SOC_H 14 #define __LINUX_SND_SOC_H 15 16 #include <linux/platform_device.h> 17 #include <linux/types.h> 18 #include <linux/notifier.h> 19 #include <linux/workqueue.h> 20 #include <linux/interrupt.h> 21 #include <linux/kernel.h> 22 #include <linux/regmap.h> 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/control.h> 26 #include <sound/ac97_codec.h> 27 28 /* 29 * Convenience kcontrol builders 30 */ 31 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert) \ 32 ((unsigned long)&(struct soc_mixer_control) \ 33 {.reg = xreg, .rreg = xreg, .shift = shift_left, \ 34 .rshift = shift_right, .max = xmax, .platform_max = xmax, \ 35 .invert = xinvert}) 36 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \ 37 SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert) 38 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \ 39 ((unsigned long)&(struct soc_mixer_control) \ 40 {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert}) 41 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \ 42 ((unsigned long)&(struct soc_mixer_control) \ 43 {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \ 44 .max = xmax, .platform_max = xmax, .invert = xinvert}) 45 #define SOC_SINGLE(xname, reg, shift, max, invert) \ 46 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 47 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 48 .put = snd_soc_put_volsw, \ 49 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 50 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 51 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 52 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 53 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 54 .tlv.p = (tlv_array), \ 55 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 56 .put = snd_soc_put_volsw, \ 57 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 58 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \ 59 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 60 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 61 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 62 .tlv.p = (tlv_array),\ 63 .info = snd_soc_info_volsw, \ 64 .get = snd_soc_get_volsw_sx,\ 65 .put = snd_soc_put_volsw_sx, \ 66 .private_value = (unsigned long)&(struct soc_mixer_control) \ 67 {.reg = xreg, .rreg = xreg, \ 68 .shift = xshift, .rshift = xshift, \ 69 .max = xmax, .min = xmin} } 70 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \ 71 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 72 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 73 .put = snd_soc_put_volsw, \ 74 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \ 75 max, invert) } 76 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \ 77 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 78 .info = snd_soc_info_volsw, \ 79 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \ 80 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 81 xmax, xinvert) } 82 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \ 83 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 84 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 85 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 86 .tlv.p = (tlv_array), \ 87 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 88 .put = snd_soc_put_volsw, \ 89 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \ 90 max, invert) } 91 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \ 92 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 93 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 94 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 95 .tlv.p = (tlv_array), \ 96 .info = snd_soc_info_volsw, \ 97 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \ 98 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 99 xmax, xinvert) } 100 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \ 101 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 102 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 103 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 104 .tlv.p = (tlv_array), \ 105 .info = snd_soc_info_volsw, \ 106 .get = snd_soc_get_volsw_sx, \ 107 .put = snd_soc_put_volsw_sx, \ 108 .private_value = (unsigned long)&(struct soc_mixer_control) \ 109 {.reg = xreg, .rreg = xrreg, \ 110 .shift = xshift, .rshift = xshift, \ 111 .max = xmax, .min = xmin} } 112 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \ 113 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 114 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 115 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 116 .tlv.p = (tlv_array), \ 117 .info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \ 118 .put = snd_soc_put_volsw_s8, \ 119 .private_value = (unsigned long)&(struct soc_mixer_control) \ 120 {.reg = xreg, .min = xmin, .max = xmax, \ 121 .platform_max = xmax} } 122 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \ 123 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 124 .max = xmax, .texts = xtexts } 125 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \ 126 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts) 127 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \ 128 { .max = xmax, .texts = xtexts } 129 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \ 130 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 131 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues} 132 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \ 133 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues) 134 #define SOC_ENUM(xname, xenum) \ 135 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 136 .info = snd_soc_info_enum_double, \ 137 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \ 138 .private_value = (unsigned long)&xenum } 139 #define SOC_VALUE_ENUM(xname, xenum) \ 140 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 141 .info = snd_soc_info_enum_double, \ 142 .get = snd_soc_get_value_enum_double, \ 143 .put = snd_soc_put_value_enum_double, \ 144 .private_value = (unsigned long)&xenum } 145 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\ 146 xhandler_get, xhandler_put) \ 147 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 148 .info = snd_soc_info_volsw, \ 149 .get = xhandler_get, .put = xhandler_put, \ 150 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 151 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\ 152 xhandler_get, xhandler_put) \ 153 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 154 .info = snd_soc_info_volsw, \ 155 .get = xhandler_get, .put = xhandler_put, \ 156 .private_value = \ 157 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) } 158 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\ 159 xhandler_get, xhandler_put, tlv_array) \ 160 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 161 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 162 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 163 .tlv.p = (tlv_array), \ 164 .info = snd_soc_info_volsw, \ 165 .get = xhandler_get, .put = xhandler_put, \ 166 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 167 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\ 168 xhandler_get, xhandler_put, tlv_array) \ 169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 170 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 171 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 172 .tlv.p = (tlv_array), \ 173 .info = snd_soc_info_volsw, \ 174 .get = xhandler_get, .put = xhandler_put, \ 175 .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \ 176 xmax, xinvert) } 177 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\ 178 xhandler_get, xhandler_put, tlv_array) \ 179 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 180 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 181 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 182 .tlv.p = (tlv_array), \ 183 .info = snd_soc_info_volsw, \ 184 .get = xhandler_get, .put = xhandler_put, \ 185 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 186 xmax, xinvert) } 187 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \ 188 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 189 .info = snd_soc_info_bool_ext, \ 190 .get = xhandler_get, .put = xhandler_put, \ 191 .private_value = xdata } 192 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \ 193 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 194 .info = snd_soc_info_enum_ext, \ 195 .get = xhandler_get, .put = xhandler_put, \ 196 .private_value = (unsigned long)&xenum } 197 198 #define SND_SOC_BYTES(xname, xbase, xregs) \ 199 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 200 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \ 201 .put = snd_soc_bytes_put, .private_value = \ 202 ((unsigned long)&(struct soc_bytes) \ 203 {.base = xbase, .num_regs = xregs }) } 204 205 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask) \ 206 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 207 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \ 208 .put = snd_soc_bytes_put, .private_value = \ 209 ((unsigned long)&(struct soc_bytes) \ 210 {.base = xbase, .num_regs = xregs, \ 211 .mask = xmask }) } 212 213 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \ 214 xmin, xmax, xinvert) \ 215 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 216 .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \ 217 .put = snd_soc_put_xr_sx, \ 218 .private_value = (unsigned long)&(struct soc_mreg_control) \ 219 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \ 220 .invert = xinvert, .min = xmin, .max = xmax} } 221 222 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \ 223 SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \ 224 snd_soc_get_strobe, snd_soc_put_strobe) 225 226 /* 227 * Simplified versions of above macros, declaring a struct and calculating 228 * ARRAY_SIZE internally 229 */ 230 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \ 231 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \ 232 ARRAY_SIZE(xtexts), xtexts) 233 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \ 234 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts) 235 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \ 236 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts) 237 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \ 238 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \ 239 ARRAY_SIZE(xtexts), xtexts, xvalues) 240 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \ 241 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues) 242 243 /* 244 * Component probe and remove ordering levels for components with runtime 245 * dependencies. 246 */ 247 #define SND_SOC_COMP_ORDER_FIRST -2 248 #define SND_SOC_COMP_ORDER_EARLY -1 249 #define SND_SOC_COMP_ORDER_NORMAL 0 250 #define SND_SOC_COMP_ORDER_LATE 1 251 #define SND_SOC_COMP_ORDER_LAST 2 252 253 /* 254 * Bias levels 255 * 256 * @ON: Bias is fully on for audio playback and capture operations. 257 * @PREPARE: Prepare for audio operations. Called before DAPM switching for 258 * stream start and stop operations. 259 * @STANDBY: Low power standby state when no playback/capture operations are 260 * in progress. NOTE: The transition time between STANDBY and ON 261 * should be as fast as possible and no longer than 10ms. 262 * @OFF: Power Off. No restrictions on transition times. 263 */ 264 enum snd_soc_bias_level { 265 SND_SOC_BIAS_OFF = 0, 266 SND_SOC_BIAS_STANDBY = 1, 267 SND_SOC_BIAS_PREPARE = 2, 268 SND_SOC_BIAS_ON = 3, 269 }; 270 271 struct device_node; 272 struct snd_jack; 273 struct snd_soc_card; 274 struct snd_soc_pcm_stream; 275 struct snd_soc_ops; 276 struct snd_soc_pcm_runtime; 277 struct snd_soc_dai; 278 struct snd_soc_dai_driver; 279 struct snd_soc_platform; 280 struct snd_soc_dai_link; 281 struct snd_soc_platform_driver; 282 struct snd_soc_codec; 283 struct snd_soc_codec_driver; 284 struct soc_enum; 285 struct snd_soc_jack; 286 struct snd_soc_jack_zone; 287 struct snd_soc_jack_pin; 288 struct snd_soc_cache_ops; 289 #include <sound/soc-dapm.h> 290 #include <sound/soc-dpcm.h> 291 292 #ifdef CONFIG_GPIOLIB 293 struct snd_soc_jack_gpio; 294 #endif 295 296 typedef int (*hw_write_t)(void *,const char* ,int); 297 298 extern struct snd_ac97_bus_ops soc_ac97_ops; 299 300 enum snd_soc_control_type { 301 SND_SOC_I2C = 1, 302 SND_SOC_SPI, 303 SND_SOC_REGMAP, 304 }; 305 306 enum snd_soc_compress_type { 307 SND_SOC_FLAT_COMPRESSION = 1, 308 }; 309 310 enum snd_soc_pcm_subclass { 311 SND_SOC_PCM_CLASS_PCM = 0, 312 SND_SOC_PCM_CLASS_BE = 1, 313 }; 314 315 enum snd_soc_card_subclass { 316 SND_SOC_CARD_CLASS_INIT = 0, 317 SND_SOC_CARD_CLASS_RUNTIME = 1, 318 }; 319 320 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, 321 int source, unsigned int freq, int dir); 322 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, 323 unsigned int freq_in, unsigned int freq_out); 324 325 int snd_soc_register_card(struct snd_soc_card *card); 326 int snd_soc_unregister_card(struct snd_soc_card *card); 327 int snd_soc_suspend(struct device *dev); 328 int snd_soc_resume(struct device *dev); 329 int snd_soc_poweroff(struct device *dev); 330 int snd_soc_register_platform(struct device *dev, 331 struct snd_soc_platform_driver *platform_drv); 332 void snd_soc_unregister_platform(struct device *dev); 333 int snd_soc_register_codec(struct device *dev, 334 const struct snd_soc_codec_driver *codec_drv, 335 struct snd_soc_dai_driver *dai_drv, int num_dai); 336 void snd_soc_unregister_codec(struct device *dev); 337 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, 338 unsigned int reg); 339 int snd_soc_codec_readable_register(struct snd_soc_codec *codec, 340 unsigned int reg); 341 int snd_soc_codec_writable_register(struct snd_soc_codec *codec, 342 unsigned int reg); 343 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, 344 int addr_bits, int data_bits, 345 enum snd_soc_control_type control); 346 int snd_soc_cache_sync(struct snd_soc_codec *codec); 347 int snd_soc_cache_init(struct snd_soc_codec *codec); 348 int snd_soc_cache_exit(struct snd_soc_codec *codec); 349 int snd_soc_cache_write(struct snd_soc_codec *codec, 350 unsigned int reg, unsigned int value); 351 int snd_soc_cache_read(struct snd_soc_codec *codec, 352 unsigned int reg, unsigned int *value); 353 int snd_soc_default_volatile_register(struct snd_soc_codec *codec, 354 unsigned int reg); 355 int snd_soc_default_readable_register(struct snd_soc_codec *codec, 356 unsigned int reg); 357 int snd_soc_default_writable_register(struct snd_soc_codec *codec, 358 unsigned int reg); 359 int snd_soc_platform_read(struct snd_soc_platform *platform, 360 unsigned int reg); 361 int snd_soc_platform_write(struct snd_soc_platform *platform, 362 unsigned int reg, unsigned int val); 363 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); 364 365 /* Utility functions to get clock rates from various things */ 366 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots); 367 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params); 368 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots); 369 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms); 370 371 /* set runtime hw params */ 372 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, 373 const struct snd_pcm_hardware *hw); 374 375 /* Jack reporting */ 376 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type, 377 struct snd_soc_jack *jack); 378 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask); 379 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, 380 struct snd_soc_jack_pin *pins); 381 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, 382 struct notifier_block *nb); 383 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, 384 struct notifier_block *nb); 385 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count, 386 struct snd_soc_jack_zone *zones); 387 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage); 388 #ifdef CONFIG_GPIOLIB 389 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, 390 struct snd_soc_jack_gpio *gpios); 391 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, 392 struct snd_soc_jack_gpio *gpios); 393 #endif 394 395 /* codec register bit access */ 396 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, 397 unsigned int mask, unsigned int value); 398 int snd_soc_update_bits_locked(struct snd_soc_codec *codec, 399 unsigned short reg, unsigned int mask, 400 unsigned int value); 401 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, 402 unsigned int mask, unsigned int value); 403 404 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, 405 struct snd_ac97_bus_ops *ops, int num); 406 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec); 407 408 /* 409 *Controls 410 */ 411 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, 412 void *data, const char *long_name, 413 const char *prefix); 414 int snd_soc_add_codec_controls(struct snd_soc_codec *codec, 415 const struct snd_kcontrol_new *controls, int num_controls); 416 int snd_soc_add_platform_controls(struct snd_soc_platform *platform, 417 const struct snd_kcontrol_new *controls, int num_controls); 418 int snd_soc_add_card_controls(struct snd_soc_card *soc_card, 419 const struct snd_kcontrol_new *controls, int num_controls); 420 int snd_soc_add_dai_controls(struct snd_soc_dai *dai, 421 const struct snd_kcontrol_new *controls, int num_controls); 422 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, 423 struct snd_ctl_elem_info *uinfo); 424 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, 425 struct snd_ctl_elem_info *uinfo); 426 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, 427 struct snd_ctl_elem_value *ucontrol); 428 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, 429 struct snd_ctl_elem_value *ucontrol); 430 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, 431 struct snd_ctl_elem_value *ucontrol); 432 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, 433 struct snd_ctl_elem_value *ucontrol); 434 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, 435 struct snd_ctl_elem_info *uinfo); 436 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, 437 struct snd_ctl_elem_info *uinfo); 438 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info 439 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, 440 struct snd_ctl_elem_value *ucontrol); 441 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, 442 struct snd_ctl_elem_value *ucontrol); 443 #define snd_soc_get_volsw_2r snd_soc_get_volsw 444 #define snd_soc_put_volsw_2r snd_soc_put_volsw 445 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, 446 struct snd_ctl_elem_value *ucontrol); 447 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, 448 struct snd_ctl_elem_value *ucontrol); 449 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, 450 struct snd_ctl_elem_info *uinfo); 451 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, 452 struct snd_ctl_elem_value *ucontrol); 453 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, 454 struct snd_ctl_elem_value *ucontrol); 455 int snd_soc_limit_volume(struct snd_soc_codec *codec, 456 const char *name, int max); 457 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, 458 struct snd_ctl_elem_info *uinfo); 459 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, 460 struct snd_ctl_elem_value *ucontrol); 461 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, 462 struct snd_ctl_elem_value *ucontrol); 463 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, 464 struct snd_ctl_elem_info *uinfo); 465 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, 466 struct snd_ctl_elem_value *ucontrol); 467 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, 468 struct snd_ctl_elem_value *ucontrol); 469 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, 470 struct snd_ctl_elem_value *ucontrol); 471 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, 472 struct snd_ctl_elem_value *ucontrol); 473 474 /** 475 * struct snd_soc_reg_access - Describes whether a given register is 476 * readable, writable or volatile. 477 * 478 * @reg: the register number 479 * @read: whether this register is readable 480 * @write: whether this register is writable 481 * @vol: whether this register is volatile 482 */ 483 struct snd_soc_reg_access { 484 u16 reg; 485 u16 read; 486 u16 write; 487 u16 vol; 488 }; 489 490 /** 491 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection 492 * 493 * @pin: name of the pin to update 494 * @mask: bits to check for in reported jack status 495 * @invert: if non-zero then pin is enabled when status is not reported 496 */ 497 struct snd_soc_jack_pin { 498 struct list_head list; 499 const char *pin; 500 int mask; 501 bool invert; 502 }; 503 504 /** 505 * struct snd_soc_jack_zone - Describes voltage zones of jack detection 506 * 507 * @min_mv: start voltage in mv 508 * @max_mv: end voltage in mv 509 * @jack_type: type of jack that is expected for this voltage 510 * @debounce_time: debounce_time for jack, codec driver should wait for this 511 * duration before reading the adc for voltages 512 * @:list: list container 513 */ 514 struct snd_soc_jack_zone { 515 unsigned int min_mv; 516 unsigned int max_mv; 517 unsigned int jack_type; 518 unsigned int debounce_time; 519 struct list_head list; 520 }; 521 522 /** 523 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection 524 * 525 * @gpio: gpio number 526 * @name: gpio name 527 * @report: value to report when jack detected 528 * @invert: report presence in low state 529 * @debouce_time: debouce time in ms 530 * @wake: enable as wake source 531 * @jack_status_check: callback function which overrides the detection 532 * to provide more complex checks (eg, reading an 533 * ADC). 534 */ 535 #ifdef CONFIG_GPIOLIB 536 struct snd_soc_jack_gpio { 537 unsigned int gpio; 538 const char *name; 539 int report; 540 int invert; 541 int debounce_time; 542 bool wake; 543 544 struct snd_soc_jack *jack; 545 struct delayed_work work; 546 547 int (*jack_status_check)(void); 548 }; 549 #endif 550 551 struct snd_soc_jack { 552 struct mutex mutex; 553 struct snd_jack *jack; 554 struct snd_soc_codec *codec; 555 struct list_head pins; 556 int status; 557 struct blocking_notifier_head notifier; 558 struct list_head jack_zones; 559 }; 560 561 /* SoC PCM stream information */ 562 struct snd_soc_pcm_stream { 563 const char *stream_name; 564 u64 formats; /* SNDRV_PCM_FMTBIT_* */ 565 unsigned int rates; /* SNDRV_PCM_RATE_* */ 566 unsigned int rate_min; /* min rate */ 567 unsigned int rate_max; /* max rate */ 568 unsigned int channels_min; /* min channels */ 569 unsigned int channels_max; /* max channels */ 570 unsigned int sig_bits; /* number of bits of content */ 571 }; 572 573 /* SoC audio ops */ 574 struct snd_soc_ops { 575 int (*startup)(struct snd_pcm_substream *); 576 void (*shutdown)(struct snd_pcm_substream *); 577 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *); 578 int (*hw_free)(struct snd_pcm_substream *); 579 int (*prepare)(struct snd_pcm_substream *); 580 int (*trigger)(struct snd_pcm_substream *, int); 581 }; 582 583 /* SoC cache ops */ 584 struct snd_soc_cache_ops { 585 const char *name; 586 enum snd_soc_compress_type id; 587 int (*init)(struct snd_soc_codec *codec); 588 int (*exit)(struct snd_soc_codec *codec); 589 int (*read)(struct snd_soc_codec *codec, unsigned int reg, 590 unsigned int *value); 591 int (*write)(struct snd_soc_codec *codec, unsigned int reg, 592 unsigned int value); 593 int (*sync)(struct snd_soc_codec *codec); 594 }; 595 596 /* SoC Audio Codec device */ 597 struct snd_soc_codec { 598 const char *name; 599 const char *name_prefix; 600 int id; 601 struct device *dev; 602 const struct snd_soc_codec_driver *driver; 603 604 struct mutex mutex; 605 struct snd_soc_card *card; 606 struct list_head list; 607 struct list_head card_list; 608 int num_dai; 609 enum snd_soc_compress_type compress_type; 610 size_t reg_size; /* reg_cache_size * reg_word_size */ 611 int (*volatile_register)(struct snd_soc_codec *, unsigned int); 612 int (*readable_register)(struct snd_soc_codec *, unsigned int); 613 int (*writable_register)(struct snd_soc_codec *, unsigned int); 614 615 /* runtime */ 616 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */ 617 unsigned int active; 618 unsigned int cache_bypass:1; /* Suppress access to the cache */ 619 unsigned int suspended:1; /* Codec is in suspend PM state */ 620 unsigned int probed:1; /* Codec has been probed */ 621 unsigned int ac97_registered:1; /* Codec has been AC97 registered */ 622 unsigned int ac97_created:1; /* Codec has been created by SoC */ 623 unsigned int sysfs_registered:1; /* codec has been sysfs registered */ 624 unsigned int cache_init:1; /* codec cache has been initialized */ 625 unsigned int using_regmap:1; /* using regmap access */ 626 u32 cache_only; /* Suppress writes to hardware */ 627 u32 cache_sync; /* Cache needs to be synced to hardware */ 628 629 /* codec IO */ 630 void *control_data; /* codec control (i2c/3wire) data */ 631 enum snd_soc_control_type control_type; 632 hw_write_t hw_write; 633 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int); 634 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 635 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 636 int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t); 637 void *reg_cache; 638 const void *reg_def_copy; 639 const struct snd_soc_cache_ops *cache_ops; 640 struct mutex cache_rw_mutex; 641 int val_bytes; 642 643 /* dapm */ 644 struct snd_soc_dapm_context dapm; 645 unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */ 646 647 #ifdef CONFIG_DEBUG_FS 648 struct dentry *debugfs_codec_root; 649 struct dentry *debugfs_reg; 650 struct dentry *debugfs_dapm; 651 #endif 652 }; 653 654 /* codec driver */ 655 struct snd_soc_codec_driver { 656 657 /* driver ops */ 658 int (*probe)(struct snd_soc_codec *); 659 int (*remove)(struct snd_soc_codec *); 660 int (*suspend)(struct snd_soc_codec *); 661 int (*resume)(struct snd_soc_codec *); 662 663 /* Default control and setup, added after probe() is run */ 664 const struct snd_kcontrol_new *controls; 665 int num_controls; 666 const struct snd_soc_dapm_widget *dapm_widgets; 667 int num_dapm_widgets; 668 const struct snd_soc_dapm_route *dapm_routes; 669 int num_dapm_routes; 670 671 /* codec wide operations */ 672 int (*set_sysclk)(struct snd_soc_codec *codec, 673 int clk_id, int source, unsigned int freq, int dir); 674 int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source, 675 unsigned int freq_in, unsigned int freq_out); 676 677 /* codec IO */ 678 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 679 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 680 int (*display_register)(struct snd_soc_codec *, char *, 681 size_t, unsigned int); 682 int (*volatile_register)(struct snd_soc_codec *, unsigned int); 683 int (*readable_register)(struct snd_soc_codec *, unsigned int); 684 int (*writable_register)(struct snd_soc_codec *, unsigned int); 685 unsigned int reg_cache_size; 686 short reg_cache_step; 687 short reg_word_size; 688 const void *reg_cache_default; 689 short reg_access_size; 690 const struct snd_soc_reg_access *reg_access_default; 691 enum snd_soc_compress_type compress_type; 692 693 /* codec bias level */ 694 int (*set_bias_level)(struct snd_soc_codec *, 695 enum snd_soc_bias_level level); 696 bool idle_bias_off; 697 698 void (*seq_notifier)(struct snd_soc_dapm_context *, 699 enum snd_soc_dapm_type, int); 700 701 /* codec stream completion event */ 702 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event); 703 704 bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */ 705 706 /* probe ordering - for components with runtime dependencies */ 707 int probe_order; 708 int remove_order; 709 }; 710 711 /* SoC platform interface */ 712 struct snd_soc_platform_driver { 713 714 int (*probe)(struct snd_soc_platform *); 715 int (*remove)(struct snd_soc_platform *); 716 int (*suspend)(struct snd_soc_dai *dai); 717 int (*resume)(struct snd_soc_dai *dai); 718 719 /* pcm creation and destruction */ 720 int (*pcm_new)(struct snd_soc_pcm_runtime *); 721 void (*pcm_free)(struct snd_pcm *); 722 723 /* Default control and setup, added after probe() is run */ 724 const struct snd_kcontrol_new *controls; 725 int num_controls; 726 const struct snd_soc_dapm_widget *dapm_widgets; 727 int num_dapm_widgets; 728 const struct snd_soc_dapm_route *dapm_routes; 729 int num_dapm_routes; 730 731 /* 732 * For platform caused delay reporting. 733 * Optional. 734 */ 735 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, 736 struct snd_soc_dai *); 737 738 /* platform stream ops */ 739 struct snd_pcm_ops *ops; 740 741 /* platform stream completion event */ 742 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event); 743 744 /* probe ordering - for components with runtime dependencies */ 745 int probe_order; 746 int remove_order; 747 748 /* platform IO - used for platform DAPM */ 749 unsigned int (*read)(struct snd_soc_platform *, unsigned int); 750 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int); 751 }; 752 753 struct snd_soc_platform { 754 const char *name; 755 int id; 756 struct device *dev; 757 struct snd_soc_platform_driver *driver; 758 struct mutex mutex; 759 760 unsigned int suspended:1; /* platform is suspended */ 761 unsigned int probed:1; 762 763 struct snd_soc_card *card; 764 struct list_head list; 765 struct list_head card_list; 766 767 struct snd_soc_dapm_context dapm; 768 769 #ifdef CONFIG_DEBUG_FS 770 struct dentry *debugfs_platform_root; 771 struct dentry *debugfs_dapm; 772 #endif 773 }; 774 775 struct snd_soc_dai_link { 776 /* config - must be set by machine driver */ 777 const char *name; /* Codec name */ 778 const char *stream_name; /* Stream name */ 779 const char *codec_name; /* for multi-codec */ 780 const struct device_node *codec_of_node; 781 const char *platform_name; /* for multi-platform */ 782 const struct device_node *platform_of_node; 783 const char *cpu_dai_name; 784 const struct device_node *cpu_dai_of_node; 785 const char *codec_dai_name; 786 int be_id; /* optional ID for machine driver BE identification */ 787 788 const struct snd_soc_pcm_stream *params; 789 790 unsigned int dai_fmt; /* format to set on init */ 791 792 enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */ 793 794 /* Keep DAI active over suspend */ 795 unsigned int ignore_suspend:1; 796 797 /* Symmetry requirements */ 798 unsigned int symmetric_rates:1; 799 800 /* Do not create a PCM for this DAI link (Backend link) */ 801 unsigned int no_pcm:1; 802 803 /* This DAI link can route to other DAI links at runtime (Frontend)*/ 804 unsigned int dynamic:1; 805 806 /* pmdown_time is ignored at stop */ 807 unsigned int ignore_pmdown_time:1; 808 809 /* codec/machine specific init - e.g. add machine controls */ 810 int (*init)(struct snd_soc_pcm_runtime *rtd); 811 812 /* optional hw_params re-writing for BE and FE sync */ 813 int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd, 814 struct snd_pcm_hw_params *params); 815 816 /* machine stream operations */ 817 struct snd_soc_ops *ops; 818 }; 819 820 struct snd_soc_codec_conf { 821 const char *dev_name; 822 823 /* 824 * optional map of kcontrol, widget and path name prefixes that are 825 * associated per device 826 */ 827 const char *name_prefix; 828 829 /* 830 * set this to the desired compression type if you want to 831 * override the one supplied in codec->driver->compress_type 832 */ 833 enum snd_soc_compress_type compress_type; 834 }; 835 836 struct snd_soc_aux_dev { 837 const char *name; /* Codec name */ 838 const char *codec_name; /* for multi-codec */ 839 840 /* codec/machine specific init - e.g. add machine controls */ 841 int (*init)(struct snd_soc_dapm_context *dapm); 842 }; 843 844 /* SoC card */ 845 struct snd_soc_card { 846 const char *name; 847 const char *long_name; 848 const char *driver_name; 849 struct device *dev; 850 struct snd_card *snd_card; 851 struct module *owner; 852 853 struct list_head list; 854 struct mutex mutex; 855 struct mutex dapm_mutex; 856 857 bool instantiated; 858 859 int (*probe)(struct snd_soc_card *card); 860 int (*late_probe)(struct snd_soc_card *card); 861 int (*remove)(struct snd_soc_card *card); 862 863 /* the pre and post PM functions are used to do any PM work before and 864 * after the codec and DAI's do any PM work. */ 865 int (*suspend_pre)(struct snd_soc_card *card); 866 int (*suspend_post)(struct snd_soc_card *card); 867 int (*resume_pre)(struct snd_soc_card *card); 868 int (*resume_post)(struct snd_soc_card *card); 869 870 /* callbacks */ 871 int (*set_bias_level)(struct snd_soc_card *, 872 struct snd_soc_dapm_context *dapm, 873 enum snd_soc_bias_level level); 874 int (*set_bias_level_post)(struct snd_soc_card *, 875 struct snd_soc_dapm_context *dapm, 876 enum snd_soc_bias_level level); 877 878 long pmdown_time; 879 880 /* CPU <--> Codec DAI links */ 881 struct snd_soc_dai_link *dai_link; 882 int num_links; 883 struct snd_soc_pcm_runtime *rtd; 884 int num_rtd; 885 886 /* optional codec specific configuration */ 887 struct snd_soc_codec_conf *codec_conf; 888 int num_configs; 889 890 /* 891 * optional auxiliary devices such as amplifiers or codecs with DAI 892 * link unused 893 */ 894 struct snd_soc_aux_dev *aux_dev; 895 int num_aux_devs; 896 struct snd_soc_pcm_runtime *rtd_aux; 897 int num_aux_rtd; 898 899 const struct snd_kcontrol_new *controls; 900 int num_controls; 901 902 /* 903 * Card-specific routes and widgets. 904 */ 905 const struct snd_soc_dapm_widget *dapm_widgets; 906 int num_dapm_widgets; 907 const struct snd_soc_dapm_route *dapm_routes; 908 int num_dapm_routes; 909 bool fully_routed; 910 911 struct work_struct deferred_resume_work; 912 913 /* lists of probed devices belonging to this card */ 914 struct list_head codec_dev_list; 915 struct list_head platform_dev_list; 916 struct list_head dai_dev_list; 917 918 struct list_head widgets; 919 struct list_head paths; 920 struct list_head dapm_list; 921 struct list_head dapm_dirty; 922 923 /* Generic DAPM context for the card */ 924 struct snd_soc_dapm_context dapm; 925 struct snd_soc_dapm_stats dapm_stats; 926 927 #ifdef CONFIG_DEBUG_FS 928 struct dentry *debugfs_card_root; 929 struct dentry *debugfs_pop_time; 930 #endif 931 u32 pop_time; 932 933 void *drvdata; 934 }; 935 936 /* SoC machine DAI configuration, glues a codec and cpu DAI together */ 937 struct snd_soc_pcm_runtime { 938 struct device *dev; 939 struct snd_soc_card *card; 940 struct snd_soc_dai_link *dai_link; 941 struct mutex pcm_mutex; 942 enum snd_soc_pcm_subclass pcm_subclass; 943 struct snd_pcm_ops ops; 944 945 unsigned int dev_registered:1; 946 947 /* Dynamic PCM BE runtime data */ 948 struct snd_soc_dpcm_runtime dpcm[2]; 949 950 long pmdown_time; 951 952 /* runtime devices */ 953 struct snd_pcm *pcm; 954 struct snd_soc_codec *codec; 955 struct snd_soc_platform *platform; 956 struct snd_soc_dai *codec_dai; 957 struct snd_soc_dai *cpu_dai; 958 959 struct delayed_work delayed_work; 960 }; 961 962 /* mixer control */ 963 struct soc_mixer_control { 964 int min, max, platform_max; 965 unsigned int reg, rreg, shift, rshift, invert; 966 }; 967 968 struct soc_bytes { 969 int base; 970 int num_regs; 971 u32 mask; 972 }; 973 974 /* multi register control */ 975 struct soc_mreg_control { 976 long min, max; 977 unsigned int regbase, regcount, nbits, invert; 978 }; 979 980 /* enumerated kcontrol */ 981 struct soc_enum { 982 unsigned short reg; 983 unsigned short reg2; 984 unsigned char shift_l; 985 unsigned char shift_r; 986 unsigned int max; 987 unsigned int mask; 988 const char * const *texts; 989 const unsigned int *values; 990 void *dapm; 991 }; 992 993 /* codec IO */ 994 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg); 995 unsigned int snd_soc_write(struct snd_soc_codec *codec, 996 unsigned int reg, unsigned int val); 997 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec, 998 unsigned int reg, const void *data, size_t len); 999 1000 /* device driver data */ 1001 1002 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card, 1003 void *data) 1004 { 1005 card->drvdata = data; 1006 } 1007 1008 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card) 1009 { 1010 return card->drvdata; 1011 } 1012 1013 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec, 1014 void *data) 1015 { 1016 dev_set_drvdata(codec->dev, data); 1017 } 1018 1019 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec) 1020 { 1021 return dev_get_drvdata(codec->dev); 1022 } 1023 1024 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform, 1025 void *data) 1026 { 1027 dev_set_drvdata(platform->dev, data); 1028 } 1029 1030 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform) 1031 { 1032 return dev_get_drvdata(platform->dev); 1033 } 1034 1035 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd, 1036 void *data) 1037 { 1038 dev_set_drvdata(rtd->dev, data); 1039 } 1040 1041 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd) 1042 { 1043 return dev_get_drvdata(rtd->dev); 1044 } 1045 1046 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card) 1047 { 1048 INIT_LIST_HEAD(&card->dai_dev_list); 1049 INIT_LIST_HEAD(&card->codec_dev_list); 1050 INIT_LIST_HEAD(&card->platform_dev_list); 1051 INIT_LIST_HEAD(&card->widgets); 1052 INIT_LIST_HEAD(&card->paths); 1053 INIT_LIST_HEAD(&card->dapm_list); 1054 } 1055 1056 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc) 1057 { 1058 if (mc->reg == mc->rreg && mc->shift == mc->rshift) 1059 return 0; 1060 /* 1061 * mc->reg == mc->rreg && mc->shift != mc->rshift, or 1062 * mc->reg != mc->rreg means that the control is 1063 * stereo (bits in one register or in two registers) 1064 */ 1065 return 1; 1066 } 1067 1068 int snd_soc_util_init(void); 1069 void snd_soc_util_exit(void); 1070 1071 int snd_soc_of_parse_card_name(struct snd_soc_card *card, 1072 const char *propname); 1073 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, 1074 const char *propname); 1075 1076 #include <sound/soc-dai.h> 1077 1078 #ifdef CONFIG_DEBUG_FS 1079 extern struct dentry *snd_soc_debugfs_root; 1080 #endif 1081 1082 extern const struct dev_pm_ops snd_soc_pm_ops; 1083 1084 #endif 1085