include/sound/soc.h

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