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 <linux/log2.h>
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/compress_driver.h>
  27 #include <sound/control.h>
  28 #include <sound/ac97_codec.h>
  29
  30 /*
  31  * Convenience kcontrol builders
  32  */
  33 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert) \
  34         ((unsigned long)&(struct soc_mixer_control) \
  35         {.reg = xreg, .rreg = xreg, .shift = shift_left, \
  36         .rshift = shift_right, .max = xmax, .platform_max = xmax, \
  37         .invert = xinvert})
  38 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
  39         SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert)
  40 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  41         ((unsigned long)&(struct soc_mixer_control) \
  42         {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
  43 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
  44         ((unsigned long)&(struct soc_mixer_control) \
  45         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  46         .max = xmax, .platform_max = xmax, .invert = xinvert})
  47 #define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
  48         ((unsigned long)&(struct soc_mixer_control) \
  49         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  50         .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
  51 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  52 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  53         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  54         .put = snd_soc_put_volsw, \
  55         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  56 #define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
  57 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  58         .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
  59         .put = snd_soc_put_volsw_range, \
  60         .private_value = (unsigned long)&(struct soc_mixer_control) \
  61                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
  62                  .rshift = xshift,  .min = xmin, .max = xmax, \
  63                  .platform_max = xmax, .invert = xinvert} }
  64 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  65 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  66         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  67                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  68         .tlv.p = (tlv_array), \
  69         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  70         .put = snd_soc_put_volsw, \
  71         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  72 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
  73 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  74         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  75         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  76         .tlv.p  = (tlv_array),\
  77         .info = snd_soc_info_volsw, \
  78         .get = snd_soc_get_volsw_sx,\
  79         .put = snd_soc_put_volsw_sx, \
  80         .private_value = (unsigned long)&(struct soc_mixer_control) \
  81                 {.reg = xreg, .rreg = xreg, \
  82                 .shift = xshift, .rshift = xshift, \
  83                 .max = xmax, .min = xmin} }
  84 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
  85 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  86         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  87                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  88         .tlv.p = (tlv_array), \
  89         .info = snd_soc_info_volsw_range, \
  90         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
  91         .private_value = (unsigned long)&(struct soc_mixer_control) \
  92                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
  93                  .rshift = xshift, .min = xmin, .max = xmax, \
  94                  .platform_max = xmax, .invert = xinvert} }
  95 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
  96 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  97         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  98         .put = snd_soc_put_volsw, \
  99         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 100                                           max, invert) }
 101 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
 102 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 103         .info = snd_soc_info_volsw, \
 104         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 105         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 106                                             xmax, xinvert) }
 107 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
 108                            xmax, xinvert)               \
 109 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 110         .info = snd_soc_info_volsw_range, \
 111         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 112         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 113                                             xshift, xmin, xmax, xinvert) }
 114 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
 115 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 116         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 117                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 118         .tlv.p = (tlv_array), \
 119         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
 120         .put = snd_soc_put_volsw, \
 121         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 122                                           max, invert) }
 123 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
 124 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 125         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 126                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 127         .tlv.p = (tlv_array), \
 128         .info = snd_soc_info_volsw, \
 129         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 130         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 131                                             xmax, xinvert) }
 132 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
 133                                xmax, xinvert, tlv_array)                \
 134 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 135         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 136                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 137         .tlv.p = (tlv_array), \
 138         .info = snd_soc_info_volsw_range, \
 139         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 140         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 141                                             xshift, xmin, xmax, xinvert) }
 142 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
 143 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 144         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 145         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 146         .tlv.p  = (tlv_array), \
 147         .info = snd_soc_info_volsw, \
 148         .get = snd_soc_get_volsw_sx, \
 149         .put = snd_soc_put_volsw_sx, \
 150         .private_value = (unsigned long)&(struct soc_mixer_control) \
 151                 {.reg = xreg, .rreg = xrreg, \
 152                 .shift = xshift, .rshift = xshift, \
 153                 .max = xmax, .min = xmin} }
 154 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
 155 {       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 156         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 157                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 158         .tlv.p  = (tlv_array), \
 159         .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
 160         .put    = snd_soc_put_volsw_s8, \
 161         .private_value = (unsigned long)&(struct soc_mixer_control) \
 162                 {.reg = xreg, .min = xmin, .max = xmax, \
 163                  .platform_max = xmax} }
 164 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
 165 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 166         .max = xmax, .texts = xtexts, \
 167         .mask = xmax ? roundup_pow_of_two(xmax) - 1 : 0}
 168 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
 169         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
 170 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
 171 {       .max = xmax, .texts = xtexts }
 172 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
 173 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 174         .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
 175 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
 176         SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
 177 #define SOC_ENUM(xname, xenum) \
 178 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 179         .info = snd_soc_info_enum_double, \
 180         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 181         .private_value = (unsigned long)&xenum }
 182 #define SOC_VALUE_ENUM(xname, xenum) \
 183 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 184         .info = snd_soc_info_enum_double, \
 185         .get = snd_soc_get_value_enum_double, \
 186         .put = snd_soc_put_value_enum_double, \
 187         .private_value = (unsigned long)&xenum }
 188 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 189          xhandler_get, xhandler_put) \
 190 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 191         .info = snd_soc_info_volsw, \
 192         .get = xhandler_get, .put = xhandler_put, \
 193         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 194 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
 195          xhandler_get, xhandler_put) \
 196 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 197         .info = snd_soc_info_volsw, \
 198         .get = xhandler_get, .put = xhandler_put, \
 199         .private_value = \
 200                 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) }
 201 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 202          xhandler_get, xhandler_put, tlv_array) \
 203 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 204         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 205                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 206         .tlv.p = (tlv_array), \
 207         .info = snd_soc_info_volsw, \
 208         .get = xhandler_get, .put = xhandler_put, \
 209         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 210 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 211          xhandler_get, xhandler_put, tlv_array) \
 212 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 213         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 214                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 215         .tlv.p = (tlv_array), \
 216         .info = snd_soc_info_volsw, \
 217         .get = xhandler_get, .put = xhandler_put, \
 218         .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
 219                                           xmax, xinvert) }
 220 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 221          xhandler_get, xhandler_put, tlv_array) \
 222 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 223         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 224                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 225         .tlv.p = (tlv_array), \
 226         .info = snd_soc_info_volsw, \
 227         .get = xhandler_get, .put = xhandler_put, \
 228         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 229                                             xmax, xinvert) }
 230 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 231 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 232         .info = snd_soc_info_bool_ext, \
 233         .get = xhandler_get, .put = xhandler_put, \
 234         .private_value = xdata }
 235 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 236 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 237         .info = snd_soc_info_enum_ext, \
 238         .get = xhandler_get, .put = xhandler_put, \
 239         .private_value = (unsigned long)&xenum }
 240
 241 #define SND_SOC_BYTES(xname, xbase, xregs)                    \
 242 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 243         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 244         .put = snd_soc_bytes_put, .private_value =            \
 245                 ((unsigned long)&(struct soc_bytes)           \
 246                 {.base = xbase, .num_regs = xregs }) }
 247
 248 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask)        \
 249 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 250         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 251         .put = snd_soc_bytes_put, .private_value =            \
 252                 ((unsigned long)&(struct soc_bytes)           \
 253                 {.base = xbase, .num_regs = xregs,            \
 254                  .mask = xmask }) }
 255
 256 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
 257                 xmin, xmax, xinvert) \
 258 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 259         .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
 260         .put = snd_soc_put_xr_sx, \
 261         .private_value = (unsigned long)&(struct soc_mreg_control) \
 262                 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
 263                 .invert = xinvert, .min = xmin, .max = xmax} }
 264
 265 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
 266         SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
 267                 snd_soc_get_strobe, snd_soc_put_strobe)
 268
 269 /*
 270  * Simplified versions of above macros, declaring a struct and calculating
 271  * ARRAY_SIZE internally
 272  */
 273 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
 274         struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
 275                                                 ARRAY_SIZE(xtexts), xtexts)
 276 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
 277         SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
 278 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
 279         struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
 280 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
 281         struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
 282                                                         ARRAY_SIZE(xtexts), xtexts, xvalues)
 283 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 284         SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
 285
 286 /*
 287  * Component probe and remove ordering levels for components with runtime
 288  * dependencies.
 289  */
 290 #define SND_SOC_COMP_ORDER_FIRST                -2
 291 #define SND_SOC_COMP_ORDER_EARLY                -1
 292 #define SND_SOC_COMP_ORDER_NORMAL               0
 293 #define SND_SOC_COMP_ORDER_LATE         1
 294 #define SND_SOC_COMP_ORDER_LAST         2
 295
 296 /*
 297  * Bias levels
 298  *
 299  * @ON:      Bias is fully on for audio playback and capture operations.
 300  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 301  *           stream start and stop operations.
 302  * @STANDBY: Low power standby state when no playback/capture operations are
 303  *           in progress. NOTE: The transition time between STANDBY and ON
 304  *           should be as fast as possible and no longer than 10ms.
 305  * @OFF:     Power Off. No restrictions on transition times.
 306  */
 307 enum snd_soc_bias_level {
 308         SND_SOC_BIAS_OFF = 0,
 309         SND_SOC_BIAS_STANDBY = 1,
 310         SND_SOC_BIAS_PREPARE = 2,
 311         SND_SOC_BIAS_ON = 3,
 312 };
 313
 314 struct device_node;
 315 struct snd_jack;
 316 struct snd_soc_card;
 317 struct snd_soc_pcm_stream;
 318 struct snd_soc_ops;
 319 struct snd_soc_pcm_runtime;
 320 struct snd_soc_dai;
 321 struct snd_soc_dai_driver;
 322 struct snd_soc_platform;
 323 struct snd_soc_dai_link;
 324 struct snd_soc_platform_driver;
 325 struct snd_soc_codec;
 326 struct snd_soc_codec_driver;
 327 struct soc_enum;
 328 struct snd_soc_jack;
 329 struct snd_soc_jack_zone;
 330 struct snd_soc_jack_pin;
 331 struct snd_soc_cache_ops;
 332 #include <sound/soc-dapm.h>
 333 #include <sound/soc-dpcm.h>
 334
 335 #ifdef CONFIG_GPIOLIB
 336 struct snd_soc_jack_gpio;
 337 #endif
 338
 339 typedef int (*hw_write_t)(void *,const char* ,int);
 340
 341 extern struct snd_ac97_bus_ops soc_ac97_ops;
 342
 343 enum snd_soc_control_type {
 344         SND_SOC_I2C = 1,
 345         SND_SOC_SPI,
 346         SND_SOC_REGMAP,
 347 };
 348
 349 enum snd_soc_compress_type {
 350         SND_SOC_FLAT_COMPRESSION = 1,
 351 };
 352
 353 enum snd_soc_pcm_subclass {
 354         SND_SOC_PCM_CLASS_PCM   = 0,
 355         SND_SOC_PCM_CLASS_BE    = 1,
 356 };
 357
 358 enum snd_soc_card_subclass {
 359         SND_SOC_CARD_CLASS_INIT         = 0,
 360         SND_SOC_CARD_CLASS_RUNTIME      = 1,
 361 };
 362
 363 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 364                              int source, unsigned int freq, int dir);
 365 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
 366                           unsigned int freq_in, unsigned int freq_out);
 367
 368 int snd_soc_register_card(struct snd_soc_card *card);
 369 int snd_soc_unregister_card(struct snd_soc_card *card);
 370 int snd_soc_suspend(struct device *dev);
 371 int snd_soc_resume(struct device *dev);
 372 int snd_soc_poweroff(struct device *dev);
 373 int snd_soc_register_platform(struct device *dev,
 374                 struct snd_soc_platform_driver *platform_drv);
 375 void snd_soc_unregister_platform(struct device *dev);
 376 int snd_soc_register_codec(struct device *dev,
 377                 const struct snd_soc_codec_driver *codec_drv,
 378                 struct snd_soc_dai_driver *dai_drv, int num_dai);
 379 void snd_soc_unregister_codec(struct device *dev);
 380 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
 381                                     unsigned int reg);
 382 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
 383                                     unsigned int reg);
 384 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
 385                                     unsigned int reg);
 386 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 387                                int addr_bits, int data_bits,
 388                                enum snd_soc_control_type control);
 389 int snd_soc_cache_sync(struct snd_soc_codec *codec);
 390 int snd_soc_cache_init(struct snd_soc_codec *codec);
 391 int snd_soc_cache_exit(struct snd_soc_codec *codec);
 392 int snd_soc_cache_write(struct snd_soc_codec *codec,
 393                         unsigned int reg, unsigned int value);
 394 int snd_soc_cache_read(struct snd_soc_codec *codec,
 395                        unsigned int reg, unsigned int *value);
 396 int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
 397                                       unsigned int reg);
 398 int snd_soc_default_readable_register(struct snd_soc_codec *codec,
 399                                       unsigned int reg);
 400 int snd_soc_default_writable_register(struct snd_soc_codec *codec,
 401                                       unsigned int reg);
 402 int snd_soc_platform_read(struct snd_soc_platform *platform,
 403                                         unsigned int reg);
 404 int snd_soc_platform_write(struct snd_soc_platform *platform,
 405                                         unsigned int reg, unsigned int val);
 406 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
 407 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);
 408
 409 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
 410                 const char *dai_link, int stream);
 411 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
 412                 const char *dai_link);
 413
 414 /* Utility functions to get clock rates from various things */
 415 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 416 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 417 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 418 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 419
 420 /* set runtime hw params */
 421 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 422         const struct snd_pcm_hardware *hw);
 423
 424 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
 425                 int cmd, struct snd_soc_platform *platform);
 426
 427 /* Jack reporting */
 428 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
 429                      struct snd_soc_jack *jack);
 430 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 431 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 432                           struct snd_soc_jack_pin *pins);
 433 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
 434                                     struct notifier_block *nb);
 435 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
 436                                       struct notifier_block *nb);
 437 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
 438                           struct snd_soc_jack_zone *zones);
 439 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
 440 #ifdef CONFIG_GPIOLIB
 441 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 442                         struct snd_soc_jack_gpio *gpios);
 443 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 444                         struct snd_soc_jack_gpio *gpios);
 445 #endif
 446
 447 /* codec register bit access */
 448 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 449                                 unsigned int mask, unsigned int value);
 450 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
 451                                unsigned short reg, unsigned int mask,
 452                                unsigned int value);
 453 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 454                                 unsigned int mask, unsigned int value);
 455
 456 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 457         struct snd_ac97_bus_ops *ops, int num);
 458 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 459
 460 /*
 461  *Controls
 462  */
 463 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 464                                   void *data, const char *long_name,
 465                                   const char *prefix);
 466 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
 467         const struct snd_kcontrol_new *controls, int num_controls);
 468 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
 469         const struct snd_kcontrol_new *controls, int num_controls);
 470 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
 471         const struct snd_kcontrol_new *controls, int num_controls);
 472 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
 473         const struct snd_kcontrol_new *controls, int num_controls);
 474 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 475         struct snd_ctl_elem_info *uinfo);
 476 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 477         struct snd_ctl_elem_info *uinfo);
 478 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 479         struct snd_ctl_elem_value *ucontrol);
 480 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 481         struct snd_ctl_elem_value *ucontrol);
 482 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
 483         struct snd_ctl_elem_value *ucontrol);
 484 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 485         struct snd_ctl_elem_value *ucontrol);
 486 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 487         struct snd_ctl_elem_info *uinfo);
 488 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 489         struct snd_ctl_elem_info *uinfo);
 490 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 491 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 492         struct snd_ctl_elem_value *ucontrol);
 493 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 494         struct snd_ctl_elem_value *ucontrol);
 495 #define snd_soc_get_volsw_2r snd_soc_get_volsw
 496 #define snd_soc_put_volsw_2r snd_soc_put_volsw
 497 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
 498         struct snd_ctl_elem_value *ucontrol);
 499 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 500         struct snd_ctl_elem_value *ucontrol);
 501 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 502         struct snd_ctl_elem_info *uinfo);
 503 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 504         struct snd_ctl_elem_value *ucontrol);
 505 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 506         struct snd_ctl_elem_value *ucontrol);
 507 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
 508         struct snd_ctl_elem_info *uinfo);
 509 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
 510         struct snd_ctl_elem_value *ucontrol);
 511 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
 512         struct snd_ctl_elem_value *ucontrol);
 513 int snd_soc_limit_volume(struct snd_soc_codec *codec,
 514         const char *name, int max);
 515 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
 516                        struct snd_ctl_elem_info *uinfo);
 517 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
 518                       struct snd_ctl_elem_value *ucontrol);
 519 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
 520                       struct snd_ctl_elem_value *ucontrol);
 521 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
 522         struct snd_ctl_elem_info *uinfo);
 523 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
 524         struct snd_ctl_elem_value *ucontrol);
 525 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 526         struct snd_ctl_elem_value *ucontrol);
 527 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
 528         struct snd_ctl_elem_value *ucontrol);
 529 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
 530         struct snd_ctl_elem_value *ucontrol);
 531
 532 /**
 533  * struct snd_soc_reg_access - Describes whether a given register is
 534  * readable, writable or volatile.
 535  *
 536  * @reg: the register number
 537  * @read: whether this register is readable
 538  * @write: whether this register is writable
 539  * @vol: whether this register is volatile
 540  */
 541 struct snd_soc_reg_access {
 542         u16 reg;
 543         u16 read;
 544         u16 write;
 545         u16 vol;
 546 };
 547
 548 /**
 549  * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 550  *
 551  * @pin:    name of the pin to update
 552  * @mask:   bits to check for in reported jack status
 553  * @invert: if non-zero then pin is enabled when status is not reported
 554  */
 555 struct snd_soc_jack_pin {
 556         struct list_head list;
 557         const char *pin;
 558         int mask;
 559         bool invert;
 560 };
 561
 562 /**
 563  * struct snd_soc_jack_zone - Describes voltage zones of jack detection
 564  *
 565  * @min_mv: start voltage in mv
 566  * @max_mv: end voltage in mv
 567  * @jack_type: type of jack that is expected for this voltage
 568  * @debounce_time: debounce_time for jack, codec driver should wait for this
 569  *              duration before reading the adc for voltages
 570  * @:list: list container
 571  */
 572 struct snd_soc_jack_zone {
 573         unsigned int min_mv;
 574         unsigned int max_mv;
 575         unsigned int jack_type;
 576         unsigned int debounce_time;
 577         struct list_head list;
 578 };
 579
 580 /**
 581  * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 582  *
 583  * @gpio:         gpio number
 584  * @name:         gpio name
 585  * @report:       value to report when jack detected
 586  * @invert:       report presence in low state
 587  * @debouce_time: debouce time in ms
 588  * @wake:         enable as wake source
 589  * @jack_status_check: callback function which overrides the detection
 590  *                     to provide more complex checks (eg, reading an
 591  *                     ADC).
 592  */
 593 #ifdef CONFIG_GPIOLIB
 594 struct snd_soc_jack_gpio {
 595         unsigned int gpio;
 596         const char *name;
 597         int report;
 598         int invert;
 599         int debounce_time;
 600         bool wake;
 601
 602         struct snd_soc_jack *jack;
 603         struct delayed_work work;
 604
 605         int (*jack_status_check)(void);
 606 };
 607 #endif
 608
 609 struct snd_soc_jack {
 610         struct mutex mutex;
 611         struct snd_jack *jack;
 612         struct snd_soc_codec *codec;
 613         struct list_head pins;
 614         int status;
 615         struct blocking_notifier_head notifier;
 616         struct list_head jack_zones;
 617 };
 618
 619 /* SoC PCM stream information */
 620 struct snd_soc_pcm_stream {
 621         const char *stream_name;
 622         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 623         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 624         unsigned int rate_min;          /* min rate */
 625         unsigned int rate_max;          /* max rate */
 626         unsigned int channels_min;      /* min channels */
 627         unsigned int channels_max;      /* max channels */
 628         unsigned int sig_bits;          /* number of bits of content */
 629 };
 630
 631 /* SoC audio ops */
 632 struct snd_soc_ops {
 633         int (*startup)(struct snd_pcm_substream *);
 634         void (*shutdown)(struct snd_pcm_substream *);
 635         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 636         int (*hw_free)(struct snd_pcm_substream *);
 637         int (*prepare)(struct snd_pcm_substream *);
 638         int (*trigger)(struct snd_pcm_substream *, int);
 639 };
 640
 641 struct snd_soc_compr_ops {
 642         int (*startup)(struct snd_compr_stream *);
 643         void (*shutdown)(struct snd_compr_stream *);
 644         int (*set_params)(struct snd_compr_stream *);
 645         int (*trigger)(struct snd_compr_stream *);
 646 };
 647
 648 /* SoC cache ops */
 649 struct snd_soc_cache_ops {
 650         const char *name;
 651         enum snd_soc_compress_type id;
 652         int (*init)(struct snd_soc_codec *codec);
 653         int (*exit)(struct snd_soc_codec *codec);
 654         int (*read)(struct snd_soc_codec *codec, unsigned int reg,
 655                 unsigned int *value);
 656         int (*write)(struct snd_soc_codec *codec, unsigned int reg,
 657                 unsigned int value);
 658         int (*sync)(struct snd_soc_codec *codec);
 659 };
 660
 661 /* SoC Audio Codec device */
 662 struct snd_soc_codec {
 663         const char *name;
 664         const char *name_prefix;
 665         int id;
 666         struct device *dev;
 667         const struct snd_soc_codec_driver *driver;
 668
 669         struct mutex mutex;
 670         struct snd_soc_card *card;
 671         struct list_head list;
 672         struct list_head card_list;
 673         int num_dai;
 674         enum snd_soc_compress_type compress_type;
 675         size_t reg_size;        /* reg_cache_size * reg_word_size */
 676         int (*volatile_register)(struct snd_soc_codec *, unsigned int);
 677         int (*readable_register)(struct snd_soc_codec *, unsigned int);
 678         int (*writable_register)(struct snd_soc_codec *, unsigned int);
 679
 680         /* runtime */
 681         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 682         unsigned int active;
 683         unsigned int cache_bypass:1; /* Suppress access to the cache */
 684         unsigned int suspended:1; /* Codec is in suspend PM state */
 685         unsigned int probed:1; /* Codec has been probed */
 686         unsigned int ac97_registered:1; /* Codec has been AC97 registered */
 687         unsigned int ac97_created:1; /* Codec has been created by SoC */
 688         unsigned int sysfs_registered:1; /* codec has been sysfs registered */
 689         unsigned int cache_init:1; /* codec cache has been initialized */
 690         unsigned int using_regmap:1; /* using regmap access */
 691         u32 cache_only;  /* Suppress writes to hardware */
 692         u32 cache_sync; /* Cache needs to be synced to hardware */
 693
 694         /* codec IO */
 695         void *control_data; /* codec control (i2c/3wire) data */
 696         enum snd_soc_control_type control_type;
 697         hw_write_t hw_write;
 698         unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
 699         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 700         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 701         int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
 702         void *reg_cache;
 703         const void *reg_def_copy;
 704         const struct snd_soc_cache_ops *cache_ops;
 705         struct mutex cache_rw_mutex;
 706         int val_bytes;
 707
 708         /* dapm */
 709         struct snd_soc_dapm_context dapm;
 710         unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
 711
 712 #ifdef CONFIG_DEBUG_FS
 713         struct dentry *debugfs_codec_root;
 714         struct dentry *debugfs_reg;
 715         struct dentry *debugfs_dapm;
 716 #endif
 717 };
 718
 719 /* codec driver */
 720 struct snd_soc_codec_driver {
 721
 722         /* driver ops */
 723         int (*probe)(struct snd_soc_codec *);
 724         int (*remove)(struct snd_soc_codec *);
 725         int (*suspend)(struct snd_soc_codec *);
 726         int (*resume)(struct snd_soc_codec *);
 727
 728         /* Default control and setup, added after probe() is run */
 729         const struct snd_kcontrol_new *controls;
 730         int num_controls;
 731         const struct snd_soc_dapm_widget *dapm_widgets;
 732         int num_dapm_widgets;
 733         const struct snd_soc_dapm_route *dapm_routes;
 734         int num_dapm_routes;
 735
 736         /* codec wide operations */
 737         int (*set_sysclk)(struct snd_soc_codec *codec,
 738                           int clk_id, int source, unsigned int freq, int dir);
 739         int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
 740                 unsigned int freq_in, unsigned int freq_out);
 741
 742         /* codec IO */
 743         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 744         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 745         int (*display_register)(struct snd_soc_codec *, char *,
 746                                 size_t, unsigned int);
 747         int (*volatile_register)(struct snd_soc_codec *, unsigned int);
 748         int (*readable_register)(struct snd_soc_codec *, unsigned int);
 749         int (*writable_register)(struct snd_soc_codec *, unsigned int);
 750         unsigned int reg_cache_size;
 751         short reg_cache_step;
 752         short reg_word_size;
 753         const void *reg_cache_default;
 754         short reg_access_size;
 755         const struct snd_soc_reg_access *reg_access_default;
 756         enum snd_soc_compress_type compress_type;
 757
 758         /* codec bias level */
 759         int (*set_bias_level)(struct snd_soc_codec *,
 760                               enum snd_soc_bias_level level);
 761         bool idle_bias_off;
 762
 763         void (*seq_notifier)(struct snd_soc_dapm_context *,
 764                              enum snd_soc_dapm_type, int);
 765
 766         /* codec stream completion event */
 767         int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 768
 769         bool ignore_pmdown_time;  /* Doesn't benefit from pmdown delay */
 770
 771         /* probe ordering - for components with runtime dependencies */
 772         int probe_order;
 773         int remove_order;
 774 };
 775
 776 /* SoC platform interface */
 777 struct snd_soc_platform_driver {
 778
 779         int (*probe)(struct snd_soc_platform *);
 780         int (*remove)(struct snd_soc_platform *);
 781         int (*suspend)(struct snd_soc_dai *dai);
 782         int (*resume)(struct snd_soc_dai *dai);
 783
 784         /* pcm creation and destruction */
 785         int (*pcm_new)(struct snd_soc_pcm_runtime *);
 786         void (*pcm_free)(struct snd_pcm *);
 787
 788         /* Default control and setup, added after probe() is run */
 789         const struct snd_kcontrol_new *controls;
 790         int num_controls;
 791         const struct snd_soc_dapm_widget *dapm_widgets;
 792         int num_dapm_widgets;
 793         const struct snd_soc_dapm_route *dapm_routes;
 794         int num_dapm_routes;
 795
 796         /*
 797          * For platform caused delay reporting.
 798          * Optional.
 799          */
 800         snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
 801                 struct snd_soc_dai *);
 802
 803         /* platform stream pcm ops */
 804         struct snd_pcm_ops *ops;
 805
 806         /* platform stream compress ops */
 807         struct snd_compr_ops *compr_ops;
 808
 809         /* platform stream completion event */
 810         int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 811
 812         /* probe ordering - for components with runtime dependencies */
 813         int probe_order;
 814         int remove_order;
 815
 816         /* platform IO - used for platform DAPM */
 817         unsigned int (*read)(struct snd_soc_platform *, unsigned int);
 818         int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
 819         int (*bespoke_trigger)(struct snd_pcm_substream *, int);
 820 };
 821
 822 struct snd_soc_platform {
 823         const char *name;
 824         int id;
 825         struct device *dev;
 826         struct snd_soc_platform_driver *driver;
 827         struct mutex mutex;
 828
 829         unsigned int suspended:1; /* platform is suspended */
 830         unsigned int probed:1;
 831
 832         struct snd_soc_card *card;
 833         struct list_head list;
 834         struct list_head card_list;
 835
 836         struct snd_soc_dapm_context dapm;
 837
 838 #ifdef CONFIG_DEBUG_FS
 839         struct dentry *debugfs_platform_root;
 840         struct dentry *debugfs_dapm;
 841 #endif
 842 };
 843
 844 struct snd_soc_dai_link {
 845         /* config - must be set by machine driver */
 846         const char *name;                       /* Codec name */
 847         const char *stream_name;                /* Stream name */
 848         /*
 849          * You MAY specify the link's CPU-side device, either by device name,
 850          * or by DT/OF node, but not both. If this information is omitted,
 851          * the CPU-side DAI is matched using .cpu_dai_name only, which hence
 852          * must be globally unique. These fields are currently typically used
 853          * only for codec to codec links, or systems using device tree.
 854          */
 855         const char *cpu_name;
 856         const struct device_node *cpu_of_node;
 857         /*
 858          * You MAY specify the DAI name of the CPU DAI. If this information is
 859          * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
 860          * only, which only works well when that device exposes a single DAI.
 861          */
 862         const char *cpu_dai_name;
 863         /*
 864          * You MUST specify the link's codec, either by device name, or by
 865          * DT/OF node, but not both.
 866          */
 867         const char *codec_name;
 868         const struct device_node *codec_of_node;
 869         /* You MUST specify the DAI name within the codec */
 870         const char *codec_dai_name;
 871         /*
 872          * You MAY specify the link's platform/PCM/DMA driver, either by
 873          * device name, or by DT/OF node, but not both. Some forms of link
 874          * do not need a platform.
 875          */
 876         const char *platform_name;
 877         const struct device_node *platform_of_node;
 878         int be_id;      /* optional ID for machine driver BE identification */
 879
 880         const struct snd_soc_pcm_stream *params;
 881
 882         unsigned int dai_fmt;           /* format to set on init */
 883
 884         enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
 885
 886         /* Keep DAI active over suspend */
 887         unsigned int ignore_suspend:1;
 888
 889         /* Symmetry requirements */
 890         unsigned int symmetric_rates:1;
 891
 892         /* Do not create a PCM for this DAI link (Backend link) */
 893         unsigned int no_pcm:1;
 894
 895         /* This DAI link can route to other DAI links at runtime (Frontend)*/
 896         unsigned int dynamic:1;
 897
 898         /* pmdown_time is ignored at stop */
 899         unsigned int ignore_pmdown_time:1;
 900
 901         /* codec/machine specific init - e.g. add machine controls */
 902         int (*init)(struct snd_soc_pcm_runtime *rtd);
 903
 904         /* optional hw_params re-writing for BE and FE sync */
 905         int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
 906                         struct snd_pcm_hw_params *params);
 907
 908         /* machine stream operations */
 909         const struct snd_soc_ops *ops;
 910         const struct snd_soc_compr_ops *compr_ops;
 911 };
 912
 913 struct snd_soc_codec_conf {
 914         const char *dev_name;
 915
 916         /*
 917          * optional map of kcontrol, widget and path name prefixes that are
 918          * associated per device
 919          */
 920         const char *name_prefix;
 921
 922         /*
 923          * set this to the desired compression type if you want to
 924          * override the one supplied in codec->driver->compress_type
 925          */
 926         enum snd_soc_compress_type compress_type;
 927 };
 928
 929 struct snd_soc_aux_dev {
 930         const char *name;               /* Codec name */
 931         const char *codec_name;         /* for multi-codec */
 932
 933         /* codec/machine specific init - e.g. add machine controls */
 934         int (*init)(struct snd_soc_dapm_context *dapm);
 935 };
 936
 937 /* SoC card */
 938 struct snd_soc_card {
 939         const char *name;
 940         const char *long_name;
 941         const char *driver_name;
 942         struct device *dev;
 943         struct snd_card *snd_card;
 944         struct module *owner;
 945
 946         struct list_head list;
 947         struct mutex mutex;
 948         struct mutex dapm_mutex;
 949
 950         bool instantiated;
 951
 952         int (*probe)(struct snd_soc_card *card);
 953         int (*late_probe)(struct snd_soc_card *card);
 954         int (*remove)(struct snd_soc_card *card);
 955
 956         /* the pre and post PM functions are used to do any PM work before and
 957          * after the codec and DAI's do any PM work. */
 958         int (*suspend_pre)(struct snd_soc_card *card);
 959         int (*suspend_post)(struct snd_soc_card *card);
 960         int (*resume_pre)(struct snd_soc_card *card);
 961         int (*resume_post)(struct snd_soc_card *card);
 962
 963         /* callbacks */
 964         int (*set_bias_level)(struct snd_soc_card *,
 965                               struct snd_soc_dapm_context *dapm,
 966                               enum snd_soc_bias_level level);
 967         int (*set_bias_level_post)(struct snd_soc_card *,
 968                                    struct snd_soc_dapm_context *dapm,
 969                                    enum snd_soc_bias_level level);
 970
 971         long pmdown_time;
 972
 973         /* CPU <--> Codec DAI links  */
 974         struct snd_soc_dai_link *dai_link;
 975         int num_links;
 976         struct snd_soc_pcm_runtime *rtd;
 977         int num_rtd;
 978
 979         /* optional codec specific configuration */
 980         struct snd_soc_codec_conf *codec_conf;
 981         int num_configs;
 982
 983         /*
 984          * optional auxiliary devices such as amplifiers or codecs with DAI
 985          * link unused
 986          */
 987         struct snd_soc_aux_dev *aux_dev;
 988         int num_aux_devs;
 989         struct snd_soc_pcm_runtime *rtd_aux;
 990         int num_aux_rtd;
 991
 992         const struct snd_kcontrol_new *controls;
 993         int num_controls;
 994
 995         /*
 996          * Card-specific routes and widgets.
 997          */
 998         const struct snd_soc_dapm_widget *dapm_widgets;
 999         int num_dapm_widgets;
1000         const struct snd_soc_dapm_route *dapm_routes;
1001         int num_dapm_routes;
1002         bool fully_routed;
1003
1004         struct work_struct deferred_resume_work;
1005
1006         /* lists of probed devices belonging to this card */
1007         struct list_head codec_dev_list;
1008         struct list_head platform_dev_list;
1009         struct list_head dai_dev_list;
1010
1011         struct list_head widgets;
1012         struct list_head paths;
1013         struct list_head dapm_list;
1014         struct list_head dapm_dirty;
1015
1016         /* Generic DAPM context for the card */
1017         struct snd_soc_dapm_context dapm;
1018         struct snd_soc_dapm_stats dapm_stats;
1019
1020 #ifdef CONFIG_DEBUG_FS
1021         struct dentry *debugfs_card_root;
1022         struct dentry *debugfs_pop_time;
1023 #endif
1024         u32 pop_time;
1025
1026         void *drvdata;
1027 };
1028
1029 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1030 struct snd_soc_pcm_runtime {
1031         struct device *dev;
1032         struct snd_soc_card *card;
1033         struct snd_soc_dai_link *dai_link;
1034         struct mutex pcm_mutex;
1035         enum snd_soc_pcm_subclass pcm_subclass;
1036         struct snd_pcm_ops ops;
1037
1038         unsigned int dev_registered:1;
1039
1040         /* Dynamic PCM BE runtime data */
1041         struct snd_soc_dpcm_runtime dpcm[2];
1042
1043         long pmdown_time;
1044         unsigned char pop_wait:1;
1045
1046         /* runtime devices */
1047         struct snd_pcm *pcm;
1048         struct snd_compr *compr;
1049         struct snd_soc_codec *codec;
1050         struct snd_soc_platform *platform;
1051         struct snd_soc_dai *codec_dai;
1052         struct snd_soc_dai *cpu_dai;
1053
1054         struct delayed_work delayed_work;
1055 #ifdef CONFIG_DEBUG_FS
1056         struct dentry *debugfs_dpcm_root;
1057         struct dentry *debugfs_dpcm_state;
1058 #endif
1059 };
1060
1061 /* mixer control */
1062 struct soc_mixer_control {
1063         int min, max, platform_max;
1064         unsigned int reg, rreg, shift, rshift, invert;
1065 };
1066
1067 struct soc_bytes {
1068         int base;
1069         int num_regs;
1070         u32 mask;
1071 };
1072
1073 /* multi register control */
1074 struct soc_mreg_control {
1075         long min, max;
1076         unsigned int regbase, regcount, nbits, invert;
1077 };
1078
1079 /* enumerated kcontrol */
1080 struct soc_enum {
1081         unsigned short reg;
1082         unsigned short reg2;
1083         unsigned char shift_l;
1084         unsigned char shift_r;
1085         unsigned int max;
1086         unsigned int mask;
1087         const char * const *texts;
1088         const unsigned int *values;
1089         void *dapm;
1090 };
1091
1092 /* codec IO */
1093 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1094 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1095                            unsigned int reg, unsigned int val);
1096 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1097                                     unsigned int reg, const void *data, size_t len);
1098
1099 /* device driver data */
1100
1101 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1102                 void *data)
1103 {
1104         card->drvdata = data;
1105 }
1106
1107 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1108 {
1109         return card->drvdata;
1110 }
1111
1112 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1113                 void *data)
1114 {
1115         dev_set_drvdata(codec->dev, data);
1116 }
1117
1118 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1119 {
1120         return dev_get_drvdata(codec->dev);
1121 }
1122
1123 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1124                 void *data)
1125 {
1126         dev_set_drvdata(platform->dev, data);
1127 }
1128
1129 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1130 {
1131         return dev_get_drvdata(platform->dev);
1132 }
1133
1134 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1135                 void *data)
1136 {
1137         dev_set_drvdata(rtd->dev, data);
1138 }
1139
1140 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1141 {
1142         return dev_get_drvdata(rtd->dev);
1143 }
1144
1145 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1146 {
1147         INIT_LIST_HEAD(&card->dai_dev_list);
1148         INIT_LIST_HEAD(&card->codec_dev_list);
1149         INIT_LIST_HEAD(&card->platform_dev_list);
1150         INIT_LIST_HEAD(&card->widgets);
1151         INIT_LIST_HEAD(&card->paths);
1152         INIT_LIST_HEAD(&card->dapm_list);
1153 }
1154
1155 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1156 {
1157         if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1158                 return 0;
1159         /*
1160          * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1161          * mc->reg != mc->rreg means that the control is
1162          * stereo (bits in one register or in two registers)
1163          */
1164         return 1;
1165 }
1166
1167 int snd_soc_util_init(void);
1168 void snd_soc_util_exit(void);
1169
1170 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1171                                const char *propname);
1172 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1173                                    const char *propname);
1174 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
1175                                      const char *prefix);
1176
1177 #include <sound/soc-dai.h>
1178
1179 #ifdef CONFIG_DEBUG_FS
1180 extern struct dentry *snd_soc_debugfs_root;
1181 #endif
1182
1183 extern const struct dev_pm_ops snd_soc_pm_ops;
1184
1185 #endif