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/of.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/types.h>
  19 #include <linux/notifier.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/kernel.h>
  23 #include <linux/regmap.h>
  24 #include <linux/log2.h>
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/compress_driver.h>
  28 #include <sound/control.h>
  29 #include <sound/ac97_codec.h>
  30 #include <sound/soc-topology.h>
  31
  32 /*
  33  * Convenience kcontrol builders
  34  */
  35 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert, xautodisable) \
  36         ((unsigned long)&(struct soc_mixer_control) \
  37         {.reg = xreg, .rreg = xreg, .shift = shift_left, \
  38         .rshift = shift_right, .max = xmax, .platform_max = xmax, \
  39         .invert = xinvert, .autodisable = xautodisable})
  40 #define SOC_DOUBLE_S_VALUE(xreg, shift_left, shift_right, xmin, xmax, xsign_bit, xinvert, xautodisable) \
  41         ((unsigned long)&(struct soc_mixer_control) \
  42         {.reg = xreg, .rreg = xreg, .shift = shift_left, \
  43         .rshift = shift_right, .min = xmin, .max = xmax, .platform_max = xmax, \
  44         .sign_bit = xsign_bit, .invert = xinvert, .autodisable = xautodisable})
  45 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, xautodisable) \
  46         SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert, xautodisable)
  47 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  48         ((unsigned long)&(struct soc_mixer_control) \
  49         {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
  50 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
  51         ((unsigned long)&(struct soc_mixer_control) \
  52         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  53         .max = xmax, .platform_max = xmax, .invert = xinvert})
  54 #define SOC_DOUBLE_R_S_VALUE(xlreg, xrreg, xshift, xmin, xmax, xsign_bit, xinvert) \
  55         ((unsigned long)&(struct soc_mixer_control) \
  56         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  57         .max = xmax, .min = xmin, .platform_max = xmax, .sign_bit = xsign_bit, \
  58         .invert = xinvert})
  59 #define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
  60         ((unsigned long)&(struct soc_mixer_control) \
  61         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  62         .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
  63 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  64 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  65         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  66         .put = snd_soc_put_volsw, \
  67         .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert, 0) }
  68 #define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
  69 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  70         .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
  71         .put = snd_soc_put_volsw_range, \
  72         .private_value = (unsigned long)&(struct soc_mixer_control) \
  73                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
  74                  .rshift = xshift,  .min = xmin, .max = xmax, \
  75                  .platform_max = xmax, .invert = xinvert} }
  76 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  77 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  78         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  79                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  80         .tlv.p = (tlv_array), \
  81         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  82         .put = snd_soc_put_volsw, \
  83         .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert, 0) }
  84 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, 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_sx, \
  90         .get = snd_soc_get_volsw_sx,\
  91         .put = snd_soc_put_volsw_sx, \
  92         .private_value = (unsigned long)&(struct soc_mixer_control) \
  93                 {.reg = xreg, .rreg = xreg, \
  94                 .shift = xshift, .rshift = xshift, \
  95                 .max = xmax, .min = xmin} }
  96 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
  97 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  98         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  99                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 100         .tlv.p = (tlv_array), \
 101         .info = snd_soc_info_volsw_range, \
 102         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 103         .private_value = (unsigned long)&(struct soc_mixer_control) \
 104                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
 105                  .rshift = xshift, .min = xmin, .max = xmax, \
 106                  .platform_max = xmax, .invert = xinvert} }
 107 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
 108 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 109         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
 110         .put = snd_soc_put_volsw, \
 111         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 112                                           max, invert, 0) }
 113 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
 114 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 115         .info = snd_soc_info_volsw, \
 116         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 117         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 118                                             xmax, xinvert) }
 119 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
 120                            xmax, xinvert)               \
 121 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 122         .info = snd_soc_info_volsw_range, \
 123         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 124         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 125                                             xshift, xmin, xmax, xinvert) }
 126 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
 127 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 128         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 129                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 130         .tlv.p = (tlv_array), \
 131         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
 132         .put = snd_soc_put_volsw, \
 133         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 134                                           max, invert, 0) }
 135 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
 136 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 137         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 138                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 139         .tlv.p = (tlv_array), \
 140         .info = snd_soc_info_volsw, \
 141         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 142         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 143                                             xmax, xinvert) }
 144 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
 145                                xmax, xinvert, tlv_array)                \
 146 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 147         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 148                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 149         .tlv.p = (tlv_array), \
 150         .info = snd_soc_info_volsw_range, \
 151         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 152         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 153                                             xshift, xmin, xmax, xinvert) }
 154 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, 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_sx, \
 160         .get = snd_soc_get_volsw_sx, \
 161         .put = snd_soc_put_volsw_sx, \
 162         .private_value = (unsigned long)&(struct soc_mixer_control) \
 163                 {.reg = xreg, .rreg = xrreg, \
 164                 .shift = xshift, .rshift = xshift, \
 165                 .max = xmax, .min = xmin} }
 166 #define SOC_DOUBLE_R_S_TLV(xname, reg_left, reg_right, xshift, xmin, xmax, xsign_bit, xinvert, tlv_array) \
 167 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 168         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 169                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 170         .tlv.p = (tlv_array), \
 171         .info = snd_soc_info_volsw, \
 172         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 173         .private_value = SOC_DOUBLE_R_S_VALUE(reg_left, reg_right, xshift, \
 174                                             xmin, xmax, xsign_bit, xinvert) }
 175 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
 176 {       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 177         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 178                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 179         .tlv.p  = (tlv_array), \
 180         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
 181         .put = snd_soc_put_volsw, \
 182         .private_value = SOC_DOUBLE_S_VALUE(xreg, 0, 8, xmin, xmax, 7, 0, 0) }
 183 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xitems, xtexts) \
 184 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 185         .items = xitems, .texts = xtexts, \
 186         .mask = xitems ? roundup_pow_of_two(xitems) - 1 : 0}
 187 #define SOC_ENUM_SINGLE(xreg, xshift, xitems, xtexts) \
 188         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xitems, xtexts)
 189 #define SOC_ENUM_SINGLE_EXT(xitems, xtexts) \
 190 {       .items = xitems, .texts = xtexts }
 191 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xitems, xtexts, xvalues) \
 192 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 193         .mask = xmask, .items = xitems, .texts = xtexts, .values = xvalues}
 194 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xitems, xtexts, xvalues) \
 195         SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xitems, xtexts, xvalues)
 196 #define SOC_VALUE_ENUM_SINGLE_AUTODISABLE(xreg, xshift, xmask, xitems, xtexts, xvalues) \
 197 {       .reg = xreg, .shift_l = xshift, .shift_r = xshift, \
 198         .mask = xmask, .items = xitems, .texts = xtexts, \
 199         .values = xvalues, .autodisable = 1}
 200 #define SOC_ENUM_SINGLE_VIRT(xitems, xtexts) \
 201         SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, xitems, xtexts)
 202 #define SOC_ENUM(xname, xenum) \
 203 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 204         .info = snd_soc_info_enum_double, \
 205         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 206         .private_value = (unsigned long)&xenum }
 207 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 208          xhandler_get, xhandler_put) \
 209 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 210         .info = snd_soc_info_volsw, \
 211         .get = xhandler_get, .put = xhandler_put, \
 212         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, 0) }
 213 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
 214          xhandler_get, xhandler_put) \
 215 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 216         .info = snd_soc_info_volsw, \
 217         .get = xhandler_get, .put = xhandler_put, \
 218         .private_value = \
 219                 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert, 0) }
 220 #define SOC_SINGLE_EXT_TLV(xname, xreg, 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_SINGLE_VALUE(xreg, xshift, xmax, xinvert, 0) }
 229 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 230          xhandler_get, xhandler_put, tlv_array) \
 231 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 232         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 233                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 234         .tlv.p = (tlv_array), \
 235         .info = snd_soc_info_volsw, \
 236         .get = xhandler_get, .put = xhandler_put, \
 237         .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
 238                                           xmax, xinvert, 0) }
 239 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 240          xhandler_get, xhandler_put, tlv_array) \
 241 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 242         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 243                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 244         .tlv.p = (tlv_array), \
 245         .info = snd_soc_info_volsw, \
 246         .get = xhandler_get, .put = xhandler_put, \
 247         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 248                                             xmax, xinvert) }
 249 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 250 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 251         .info = snd_soc_info_bool_ext, \
 252         .get = xhandler_get, .put = xhandler_put, \
 253         .private_value = xdata }
 254 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 255 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 256         .info = snd_soc_info_enum_double, \
 257         .get = xhandler_get, .put = xhandler_put, \
 258         .private_value = (unsigned long)&xenum }
 259 #define SOC_VALUE_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 260         SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put)
 261
 262 #define SND_SOC_BYTES(xname, xbase, xregs)                    \
 263 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 264         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 265         .put = snd_soc_bytes_put, .private_value =            \
 266                 ((unsigned long)&(struct soc_bytes)           \
 267                 {.base = xbase, .num_regs = xregs }) }
 268
 269 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask)        \
 270 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 271         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 272         .put = snd_soc_bytes_put, .private_value =            \
 273                 ((unsigned long)&(struct soc_bytes)           \
 274                 {.base = xbase, .num_regs = xregs,            \
 275                  .mask = xmask }) }
 276
 277 #define SND_SOC_BYTES_EXT(xname, xcount, xhandler_get, xhandler_put) \
 278 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 279         .info = snd_soc_bytes_info_ext, \
 280         .get = xhandler_get, .put = xhandler_put, \
 281         .private_value = (unsigned long)&(struct soc_bytes_ext) \
 282                 {.max = xcount} }
 283 #define SND_SOC_BYTES_TLV(xname, xcount, xhandler_get, xhandler_put) \
 284 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 285         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE | \
 286                   SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
 287         .tlv.c = (snd_soc_bytes_tlv_callback), \
 288         .info = snd_soc_bytes_info_ext, \
 289         .private_value = (unsigned long)&(struct soc_bytes_ext) \
 290                 {.max = xcount, .get = xhandler_get, .put = xhandler_put, } }
 291 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
 292                 xmin, xmax, xinvert) \
 293 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 294         .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
 295         .put = snd_soc_put_xr_sx, \
 296         .private_value = (unsigned long)&(struct soc_mreg_control) \
 297                 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
 298                 .invert = xinvert, .min = xmin, .max = xmax} }
 299
 300 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
 301         SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
 302                 snd_soc_get_strobe, snd_soc_put_strobe)
 303
 304 /*
 305  * Simplified versions of above macros, declaring a struct and calculating
 306  * ARRAY_SIZE internally
 307  */
 308 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
 309         const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
 310                                                 ARRAY_SIZE(xtexts), xtexts)
 311 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
 312         SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
 313 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
 314         const struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
 315 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
 316         const struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
 317                                                         ARRAY_SIZE(xtexts), xtexts, xvalues)
 318 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 319         SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
 320
 321 #define SOC_VALUE_ENUM_SINGLE_AUTODISABLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 322         const struct soc_enum name = SOC_VALUE_ENUM_SINGLE_AUTODISABLE(xreg, \
 323                 xshift, xmask, ARRAY_SIZE(xtexts), xtexts, xvalues)
 324
 325 #define SOC_ENUM_SINGLE_VIRT_DECL(name, xtexts) \
 326         const struct soc_enum name = SOC_ENUM_SINGLE_VIRT(ARRAY_SIZE(xtexts), xtexts)
 327
 328 /*
 329  * Component probe and remove ordering levels for components with runtime
 330  * dependencies.
 331  */
 332 #define SND_SOC_COMP_ORDER_FIRST                -2
 333 #define SND_SOC_COMP_ORDER_EARLY                -1
 334 #define SND_SOC_COMP_ORDER_NORMAL               0
 335 #define SND_SOC_COMP_ORDER_LATE         1
 336 #define SND_SOC_COMP_ORDER_LAST         2
 337
 338 /*
 339  * Bias levels
 340  *
 341  * @ON:      Bias is fully on for audio playback and capture operations.
 342  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 343  *           stream start and stop operations.
 344  * @STANDBY: Low power standby state when no playback/capture operations are
 345  *           in progress. NOTE: The transition time between STANDBY and ON
 346  *           should be as fast as possible and no longer than 10ms.
 347  * @OFF:     Power Off. No restrictions on transition times.
 348  */
 349 enum snd_soc_bias_level {
 350         SND_SOC_BIAS_OFF = 0,
 351         SND_SOC_BIAS_STANDBY = 1,
 352         SND_SOC_BIAS_PREPARE = 2,
 353         SND_SOC_BIAS_ON = 3,
 354 };
 355
 356 struct device_node;
 357 struct snd_jack;
 358 struct snd_soc_card;
 359 struct snd_soc_pcm_stream;
 360 struct snd_soc_ops;
 361 struct snd_soc_pcm_runtime;
 362 struct snd_soc_dai;
 363 struct snd_soc_dai_driver;
 364 struct snd_soc_platform;
 365 struct snd_soc_dai_link;
 366 struct snd_soc_platform_driver;
 367 struct snd_soc_codec;
 368 struct snd_soc_codec_driver;
 369 struct snd_soc_component;
 370 struct snd_soc_component_driver;
 371 struct soc_enum;
 372 struct snd_soc_jack;
 373 struct snd_soc_jack_zone;
 374 struct snd_soc_jack_pin;
 375 #include <sound/soc-dapm.h>
 376 #include <sound/soc-dpcm.h>
 377
 378 struct snd_soc_jack_gpio;
 379
 380 typedef int (*hw_write_t)(void *,const char* ,int);
 381
 382 enum snd_soc_pcm_subclass {
 383         SND_SOC_PCM_CLASS_PCM   = 0,
 384         SND_SOC_PCM_CLASS_BE    = 1,
 385 };
 386
 387 enum snd_soc_card_subclass {
 388         SND_SOC_CARD_CLASS_INIT         = 0,
 389         SND_SOC_CARD_CLASS_RUNTIME      = 1,
 390 };
 391
 392 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 393                              int source, unsigned int freq, int dir);
 394 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
 395                           unsigned int freq_in, unsigned int freq_out);
 396
 397 int snd_soc_register_card(struct snd_soc_card *card);
 398 int snd_soc_unregister_card(struct snd_soc_card *card);
 399 int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card);
 400 #ifdef CONFIG_PM_SLEEP
 401 int snd_soc_suspend(struct device *dev);
 402 int snd_soc_resume(struct device *dev);
 403 #else
 404 static inline int snd_soc_suspend(struct device *dev)
 405 {
 406         return 0;
 407 }
 408
 409 static inline int snd_soc_resume(struct device *dev)
 410 {
 411         return 0;
 412 }
 413 #endif
 414 int snd_soc_poweroff(struct device *dev);
 415 int snd_soc_register_platform(struct device *dev,
 416                 const struct snd_soc_platform_driver *platform_drv);
 417 int devm_snd_soc_register_platform(struct device *dev,
 418                 const struct snd_soc_platform_driver *platform_drv);
 419 void snd_soc_unregister_platform(struct device *dev);
 420 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
 421                 const struct snd_soc_platform_driver *platform_drv);
 422 void snd_soc_remove_platform(struct snd_soc_platform *platform);
 423 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev);
 424 int snd_soc_register_codec(struct device *dev,
 425                 const struct snd_soc_codec_driver *codec_drv,
 426                 struct snd_soc_dai_driver *dai_drv, int num_dai);
 427 void snd_soc_unregister_codec(struct device *dev);
 428 int snd_soc_register_component(struct device *dev,
 429                          const struct snd_soc_component_driver *cmpnt_drv,
 430                          struct snd_soc_dai_driver *dai_drv, int num_dai);
 431 int devm_snd_soc_register_component(struct device *dev,
 432                          const struct snd_soc_component_driver *cmpnt_drv,
 433                          struct snd_soc_dai_driver *dai_drv, int num_dai);
 434 void snd_soc_unregister_component(struct device *dev);
 435 int snd_soc_cache_init(struct snd_soc_codec *codec);
 436 int snd_soc_cache_exit(struct snd_soc_codec *codec);
 437
 438 int snd_soc_platform_read(struct snd_soc_platform *platform,
 439                                         unsigned int reg);
 440 int snd_soc_platform_write(struct snd_soc_platform *platform,
 441                                         unsigned int reg, unsigned int val);
 442 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
 443 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);
 444
 445 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
 446                 const char *dai_link, int stream);
 447 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
 448                 const char *dai_link);
 449
 450 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd);
 451 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream);
 452 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream);
 453
 454 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
 455         unsigned int dai_fmt);
 456
 457 /* Utility functions to get clock rates from various things */
 458 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 459 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 460 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 461 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 462
 463 /* set runtime hw params */
 464 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 465         const struct snd_pcm_hardware *hw);
 466
 467 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
 468                 int cmd, struct snd_soc_platform *platform);
 469
 470 int soc_dai_hw_params(struct snd_pcm_substream *substream,
 471                       struct snd_pcm_hw_params *params,
 472                       struct snd_soc_dai *dai);
 473
 474 /* Jack reporting */
 475 int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,
 476         struct snd_soc_jack *jack, struct snd_soc_jack_pin *pins,
 477         unsigned int num_pins);
 478
 479 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 480 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 481                           struct snd_soc_jack_pin *pins);
 482 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
 483                                     struct notifier_block *nb);
 484 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
 485                                       struct notifier_block *nb);
 486 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
 487                           struct snd_soc_jack_zone *zones);
 488 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
 489 #ifdef CONFIG_GPIOLIB
 490 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 491                         struct snd_soc_jack_gpio *gpios);
 492 int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
 493                             struct snd_soc_jack *jack,
 494                             int count, struct snd_soc_jack_gpio *gpios);
 495 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 496                         struct snd_soc_jack_gpio *gpios);
 497 #else
 498 static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 499                                          struct snd_soc_jack_gpio *gpios)
 500 {
 501         return 0;
 502 }
 503
 504 static inline int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
 505                                           struct snd_soc_jack *jack,
 506                                           int count,
 507                                           struct snd_soc_jack_gpio *gpios)
 508 {
 509         return 0;
 510 }
 511
 512 static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 513                                            struct snd_soc_jack_gpio *gpios)
 514 {
 515 }
 516 #endif
 517
 518 /* codec register bit access */
 519 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned int reg,
 520                                 unsigned int mask, unsigned int value);
 521 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
 522                                unsigned int reg, unsigned int mask,
 523                                unsigned int value);
 524 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg,
 525                                 unsigned int mask, unsigned int value);
 526
 527 #ifdef CONFIG_SND_SOC_AC97_BUS
 528 struct snd_ac97 *snd_soc_alloc_ac97_codec(struct snd_soc_codec *codec);
 529 struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 530         unsigned int id, unsigned int id_mask);
 531 void snd_soc_free_ac97_codec(struct snd_ac97 *ac97);
 532
 533 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);
 534 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
 535                 struct platform_device *pdev);
 536
 537 extern struct snd_ac97_bus_ops *soc_ac97_ops;
 538 #else
 539 static inline int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
 540         struct platform_device *pdev)
 541 {
 542         return 0;
 543 }
 544
 545 static inline int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
 546 {
 547         return 0;
 548 }
 549 #endif
 550
 551 /*
 552  *Controls
 553  */
 554 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 555                                   void *data, const char *long_name,
 556                                   const char *prefix);
 557 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
 558                                                const char *name);
 559 int snd_soc_add_component_controls(struct snd_soc_component *component,
 560         const struct snd_kcontrol_new *controls, unsigned int num_controls);
 561 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
 562         const struct snd_kcontrol_new *controls, unsigned int num_controls);
 563 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
 564         const struct snd_kcontrol_new *controls, unsigned int num_controls);
 565 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
 566         const struct snd_kcontrol_new *controls, int num_controls);
 567 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
 568         const struct snd_kcontrol_new *controls, int num_controls);
 569 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 570         struct snd_ctl_elem_info *uinfo);
 571 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 572         struct snd_ctl_elem_value *ucontrol);
 573 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 574         struct snd_ctl_elem_value *ucontrol);
 575 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 576         struct snd_ctl_elem_info *uinfo);
 577 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
 578                           struct snd_ctl_elem_info *uinfo);
 579 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 580 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 581         struct snd_ctl_elem_value *ucontrol);
 582 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 583         struct snd_ctl_elem_value *ucontrol);
 584 #define snd_soc_get_volsw_2r snd_soc_get_volsw
 585 #define snd_soc_put_volsw_2r snd_soc_put_volsw
 586 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
 587         struct snd_ctl_elem_value *ucontrol);
 588 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 589         struct snd_ctl_elem_value *ucontrol);
 590 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
 591         struct snd_ctl_elem_info *uinfo);
 592 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
 593         struct snd_ctl_elem_value *ucontrol);
 594 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
 595         struct snd_ctl_elem_value *ucontrol);
 596 int snd_soc_limit_volume(struct snd_soc_codec *codec,
 597         const char *name, int max);
 598 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
 599                        struct snd_ctl_elem_info *uinfo);
 600 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
 601                       struct snd_ctl_elem_value *ucontrol);
 602 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
 603                       struct snd_ctl_elem_value *ucontrol);
 604 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
 605         struct snd_ctl_elem_info *ucontrol);
 606 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
 607         unsigned int size, unsigned int __user *tlv);
 608 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
 609         struct snd_ctl_elem_info *uinfo);
 610 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
 611         struct snd_ctl_elem_value *ucontrol);
 612 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 613         struct snd_ctl_elem_value *ucontrol);
 614 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
 615         struct snd_ctl_elem_value *ucontrol);
 616 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
 617         struct snd_ctl_elem_value *ucontrol);
 618
 619 /**
 620  * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 621  *
 622  * @pin:    name of the pin to update
 623  * @mask:   bits to check for in reported jack status
 624  * @invert: if non-zero then pin is enabled when status is not reported
 625  * @list:   internal list entry
 626  */
 627 struct snd_soc_jack_pin {
 628         struct list_head list;
 629         const char *pin;
 630         int mask;
 631         bool invert;
 632 };
 633
 634 /**
 635  * struct snd_soc_jack_zone - Describes voltage zones of jack detection
 636  *
 637  * @min_mv: start voltage in mv
 638  * @max_mv: end voltage in mv
 639  * @jack_type: type of jack that is expected for this voltage
 640  * @debounce_time: debounce_time for jack, codec driver should wait for this
 641  *              duration before reading the adc for voltages
 642  * @list:   internal list entry
 643  */
 644 struct snd_soc_jack_zone {
 645         unsigned int min_mv;
 646         unsigned int max_mv;
 647         unsigned int jack_type;
 648         unsigned int debounce_time;
 649         struct list_head list;
 650 };
 651
 652 /**
 653  * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 654  *
 655  * @gpio:         legacy gpio number
 656  * @idx:          gpio descriptor index within the function of the GPIO
 657  *                consumer device
 658  * @gpiod_dev:    GPIO consumer device
 659  * @name:         gpio name. Also as connection ID for the GPIO consumer
 660  *                device function name lookup
 661  * @report:       value to report when jack detected
 662  * @invert:       report presence in low state
 663  * @debounce_time: debounce time in ms
 664  * @wake:         enable as wake source
 665  * @jack_status_check: callback function which overrides the detection
 666  *                     to provide more complex checks (eg, reading an
 667  *                     ADC).
 668  */
 669 struct snd_soc_jack_gpio {
 670         unsigned int gpio;
 671         unsigned int idx;
 672         struct device *gpiod_dev;
 673         const char *name;
 674         int report;
 675         int invert;
 676         int debounce_time;
 677         bool wake;
 678
 679         /* private: */
 680         struct snd_soc_jack *jack;
 681         struct delayed_work work;
 682         struct gpio_desc *desc;
 683
 684         void *data;
 685         /* public: */
 686         int (*jack_status_check)(void *data);
 687 };
 688
 689 struct snd_soc_jack {
 690         struct mutex mutex;
 691         struct snd_jack *jack;
 692         struct snd_soc_card *card;
 693         struct list_head pins;
 694         int status;
 695         struct blocking_notifier_head notifier;
 696         struct list_head jack_zones;
 697 };
 698
 699 /* SoC PCM stream information */
 700 struct snd_soc_pcm_stream {
 701         const char *stream_name;
 702         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 703         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 704         unsigned int rate_min;          /* min rate */
 705         unsigned int rate_max;          /* max rate */
 706         unsigned int channels_min;      /* min channels */
 707         unsigned int channels_max;      /* max channels */
 708         unsigned int sig_bits;          /* number of bits of content */
 709 };
 710
 711 /* SoC audio ops */
 712 struct snd_soc_ops {
 713         int (*startup)(struct snd_pcm_substream *);
 714         void (*shutdown)(struct snd_pcm_substream *);
 715         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 716         int (*hw_free)(struct snd_pcm_substream *);
 717         int (*prepare)(struct snd_pcm_substream *);
 718         int (*trigger)(struct snd_pcm_substream *, int);
 719 };
 720
 721 struct snd_soc_compr_ops {
 722         int (*startup)(struct snd_compr_stream *);
 723         void (*shutdown)(struct snd_compr_stream *);
 724         int (*set_params)(struct snd_compr_stream *);
 725         int (*trigger)(struct snd_compr_stream *);
 726 };
 727
 728 /* component interface */
 729 struct snd_soc_component_driver {
 730         const char *name;
 731
 732         /* Default control and setup, added after probe() is run */
 733         const struct snd_kcontrol_new *controls;
 734         unsigned int num_controls;
 735         const struct snd_soc_dapm_widget *dapm_widgets;
 736         unsigned int num_dapm_widgets;
 737         const struct snd_soc_dapm_route *dapm_routes;
 738         unsigned int num_dapm_routes;
 739
 740         int (*probe)(struct snd_soc_component *);
 741         void (*remove)(struct snd_soc_component *);
 742
 743         /* DT */
 744         int (*of_xlate_dai_name)(struct snd_soc_component *component,
 745                                  struct of_phandle_args *args,
 746                                  const char **dai_name);
 747         void (*seq_notifier)(struct snd_soc_component *, enum snd_soc_dapm_type,
 748                 int subseq);
 749         int (*stream_event)(struct snd_soc_component *, int event);
 750
 751         /* probe ordering - for components with runtime dependencies */
 752         int probe_order;
 753         int remove_order;
 754 };
 755
 756 struct snd_soc_component {
 757         const char *name;
 758         int id;
 759         const char *name_prefix;
 760         struct device *dev;
 761         struct snd_soc_card *card;
 762
 763         unsigned int active;
 764
 765         unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
 766         unsigned int registered_as_component:1;
 767
 768         struct list_head list;
 769
 770         struct snd_soc_dai_driver *dai_drv;
 771         int num_dai;
 772
 773         const struct snd_soc_component_driver *driver;
 774
 775         struct list_head dai_list;
 776
 777         int (*read)(struct snd_soc_component *, unsigned int, unsigned int *);
 778         int (*write)(struct snd_soc_component *, unsigned int, unsigned int);
 779
 780         struct regmap *regmap;
 781         int val_bytes;
 782
 783         struct mutex io_mutex;
 784
 785         /* attached dynamic objects */
 786         struct list_head dobj_list;
 787
 788 #ifdef CONFIG_DEBUG_FS
 789         struct dentry *debugfs_root;
 790 #endif
 791
 792         /*
 793         * DO NOT use any of the fields below in drivers, they are temporary and
 794         * are going to be removed again soon. If you use them in driver code the
 795         * driver will be marked as BROKEN when these fields are removed.
 796         */
 797
 798         /* Don't use these, use snd_soc_component_get_dapm() */
 799         struct snd_soc_dapm_context dapm;
 800
 801         const struct snd_kcontrol_new *controls;
 802         unsigned int num_controls;
 803         const struct snd_soc_dapm_widget *dapm_widgets;
 804         unsigned int num_dapm_widgets;
 805         const struct snd_soc_dapm_route *dapm_routes;
 806         unsigned int num_dapm_routes;
 807         struct snd_soc_codec *codec;
 808
 809         int (*probe)(struct snd_soc_component *);
 810         void (*remove)(struct snd_soc_component *);
 811
 812 #ifdef CONFIG_DEBUG_FS
 813         void (*init_debugfs)(struct snd_soc_component *component);
 814         const char *debugfs_prefix;
 815 #endif
 816 };
 817
 818 /* SoC Audio Codec device */
 819 struct snd_soc_codec {
 820         struct device *dev;
 821         const struct snd_soc_codec_driver *driver;
 822
 823         struct list_head list;
 824         struct list_head card_list;
 825
 826         /* runtime */
 827         unsigned int cache_bypass:1; /* Suppress access to the cache */
 828         unsigned int suspended:1; /* Codec is in suspend PM state */
 829         unsigned int cache_init:1; /* codec cache has been initialized */
 830
 831         /* codec IO */
 832         void *control_data; /* codec control (i2c/3wire) data */
 833         hw_write_t hw_write;
 834         void *reg_cache;
 835
 836         /* component */
 837         struct snd_soc_component component;
 838
 839 #ifdef CONFIG_DEBUG_FS
 840         struct dentry *debugfs_reg;
 841 #endif
 842 };
 843
 844 /* codec driver */
 845 struct snd_soc_codec_driver {
 846
 847         /* driver ops */
 848         int (*probe)(struct snd_soc_codec *);
 849         int (*remove)(struct snd_soc_codec *);
 850         int (*suspend)(struct snd_soc_codec *);
 851         int (*resume)(struct snd_soc_codec *);
 852         struct snd_soc_component_driver component_driver;
 853
 854         /* Default control and setup, added after probe() is run */
 855         const struct snd_kcontrol_new *controls;
 856         int num_controls;
 857         const struct snd_soc_dapm_widget *dapm_widgets;
 858         int num_dapm_widgets;
 859         const struct snd_soc_dapm_route *dapm_routes;
 860         int num_dapm_routes;
 861
 862         /* codec wide operations */
 863         int (*set_sysclk)(struct snd_soc_codec *codec,
 864                           int clk_id, int source, unsigned int freq, int dir);
 865         int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
 866                 unsigned int freq_in, unsigned int freq_out);
 867
 868         /* codec IO */
 869         struct regmap *(*get_regmap)(struct device *);
 870         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 871         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 872         unsigned int reg_cache_size;
 873         short reg_cache_step;
 874         short reg_word_size;
 875         const void *reg_cache_default;
 876
 877         /* codec bias level */
 878         int (*set_bias_level)(struct snd_soc_codec *,
 879                               enum snd_soc_bias_level level);
 880         bool idle_bias_off;
 881         bool suspend_bias_off;
 882
 883         void (*seq_notifier)(struct snd_soc_dapm_context *,
 884                              enum snd_soc_dapm_type, int);
 885
 886         bool ignore_pmdown_time;  /* Doesn't benefit from pmdown delay */
 887 };
 888
 889 /* SoC platform interface */
 890 struct snd_soc_platform_driver {
 891
 892         int (*probe)(struct snd_soc_platform *);
 893         int (*remove)(struct snd_soc_platform *);
 894         struct snd_soc_component_driver component_driver;
 895
 896         /* pcm creation and destruction */
 897         int (*pcm_new)(struct snd_soc_pcm_runtime *);
 898         void (*pcm_free)(struct snd_pcm *);
 899
 900         /*
 901          * For platform caused delay reporting.
 902          * Optional.
 903          */
 904         snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
 905                 struct snd_soc_dai *);
 906
 907         /* platform stream pcm ops */
 908         const struct snd_pcm_ops *ops;
 909
 910         /* platform stream compress ops */
 911         const struct snd_compr_ops *compr_ops;
 912
 913         int (*bespoke_trigger)(struct snd_pcm_substream *, int);
 914 };
 915
 916 struct snd_soc_dai_link_component {
 917         const char *name;
 918         struct device_node *of_node;
 919         const char *dai_name;
 920 };
 921
 922 struct snd_soc_platform {
 923         struct device *dev;
 924         const struct snd_soc_platform_driver *driver;
 925
 926         struct list_head list;
 927
 928         struct snd_soc_component component;
 929 };
 930
 931 struct snd_soc_dai_link {
 932         /* config - must be set by machine driver */
 933         const char *name;                       /* Codec name */
 934         const char *stream_name;                /* Stream name */
 935         /*
 936          * You MAY specify the link's CPU-side device, either by device name,
 937          * or by DT/OF node, but not both. If this information is omitted,
 938          * the CPU-side DAI is matched using .cpu_dai_name only, which hence
 939          * must be globally unique. These fields are currently typically used
 940          * only for codec to codec links, or systems using device tree.
 941          */
 942         const char *cpu_name;
 943         struct device_node *cpu_of_node;
 944         /*
 945          * You MAY specify the DAI name of the CPU DAI. If this information is
 946          * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
 947          * only, which only works well when that device exposes a single DAI.
 948          */
 949         const char *cpu_dai_name;
 950         /*
 951          * You MUST specify the link's codec, either by device name, or by
 952          * DT/OF node, but not both.
 953          */
 954         const char *codec_name;
 955         struct device_node *codec_of_node;
 956         /* You MUST specify the DAI name within the codec */
 957         const char *codec_dai_name;
 958
 959         struct snd_soc_dai_link_component *codecs;
 960         unsigned int num_codecs;
 961
 962         /*
 963          * You MAY specify the link's platform/PCM/DMA driver, either by
 964          * device name, or by DT/OF node, but not both. Some forms of link
 965          * do not need a platform.
 966          */
 967         const char *platform_name;
 968         struct device_node *platform_of_node;
 969         int be_id;      /* optional ID for machine driver BE identification */
 970
 971         const struct snd_soc_pcm_stream *params;
 972         unsigned int num_params;
 973
 974         unsigned int dai_fmt;           /* format to set on init */
 975
 976         enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
 977
 978         /* codec/machine specific init - e.g. add machine controls */
 979         int (*init)(struct snd_soc_pcm_runtime *rtd);
 980
 981         /* optional hw_params re-writing for BE and FE sync */
 982         int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
 983                         struct snd_pcm_hw_params *params);
 984
 985         /* machine stream operations */
 986         const struct snd_soc_ops *ops;
 987         const struct snd_soc_compr_ops *compr_ops;
 988
 989         /* For unidirectional dai links */
 990         bool playback_only;
 991         bool capture_only;
 992
 993         /* Mark this pcm with non atomic ops */
 994         bool nonatomic;
 995
 996         /* Keep DAI active over suspend */
 997         unsigned int ignore_suspend:1;
 998
 999         /* Symmetry requirements */
1000         unsigned int symmetric_rates:1;
1001         unsigned int symmetric_channels:1;
1002         unsigned int symmetric_samplebits:1;
1003
1004         /* Do not create a PCM for this DAI link (Backend link) */
1005         unsigned int no_pcm:1;
1006
1007         /* This DAI link can route to other DAI links at runtime (Frontend)*/
1008         unsigned int dynamic:1;
1009
1010         /* DPCM capture and Playback support */
1011         unsigned int dpcm_capture:1;
1012         unsigned int dpcm_playback:1;
1013
1014         /* DPCM used FE & BE merged format */
1015         unsigned int dpcm_merged_format:1;
1016
1017         /* pmdown_time is ignored at stop */
1018         unsigned int ignore_pmdown_time:1;
1019 };
1020
1021 struct snd_soc_codec_conf {
1022         /*
1023          * specify device either by device name, or by
1024          * DT/OF node, but not both.
1025          */
1026         const char *dev_name;
1027         struct device_node *of_node;
1028
1029         /*
1030          * optional map of kcontrol, widget and path name prefixes that are
1031          * associated per device
1032          */
1033         const char *name_prefix;
1034 };
1035
1036 struct snd_soc_aux_dev {
1037         const char *name;               /* Codec name */
1038
1039         /*
1040          * specify multi-codec either by device name, or by
1041          * DT/OF node, but not both.
1042          */
1043         const char *codec_name;
1044         struct device_node *codec_of_node;
1045
1046         /* codec/machine specific init - e.g. add machine controls */
1047         int (*init)(struct snd_soc_component *component);
1048 };
1049
1050 /* SoC card */
1051 struct snd_soc_card {
1052         const char *name;
1053         const char *long_name;
1054         const char *driver_name;
1055         struct device *dev;
1056         struct snd_card *snd_card;
1057         struct module *owner;
1058
1059         struct mutex mutex;
1060         struct mutex dapm_mutex;
1061
1062         bool instantiated;
1063
1064         int (*probe)(struct snd_soc_card *card);
1065         int (*late_probe)(struct snd_soc_card *card);
1066         int (*remove)(struct snd_soc_card *card);
1067
1068         /* the pre and post PM functions are used to do any PM work before and
1069          * after the codec and DAI's do any PM work. */
1070         int (*suspend_pre)(struct snd_soc_card *card);
1071         int (*suspend_post)(struct snd_soc_card *card);
1072         int (*resume_pre)(struct snd_soc_card *card);
1073         int (*resume_post)(struct snd_soc_card *card);
1074
1075         /* callbacks */
1076         int (*set_bias_level)(struct snd_soc_card *,
1077                               struct snd_soc_dapm_context *dapm,
1078                               enum snd_soc_bias_level level);
1079         int (*set_bias_level_post)(struct snd_soc_card *,
1080                                    struct snd_soc_dapm_context *dapm,
1081                                    enum snd_soc_bias_level level);
1082
1083         long pmdown_time;
1084
1085         /* CPU <--> Codec DAI links  */
1086         struct snd_soc_dai_link *dai_link;
1087         int num_links;
1088         struct snd_soc_pcm_runtime *rtd;
1089         int num_rtd;
1090
1091         /* optional codec specific configuration */
1092         struct snd_soc_codec_conf *codec_conf;
1093         int num_configs;
1094
1095         /*
1096          * optional auxiliary devices such as amplifiers or codecs with DAI
1097          * link unused
1098          */
1099         struct snd_soc_aux_dev *aux_dev;
1100         int num_aux_devs;
1101         struct snd_soc_pcm_runtime *rtd_aux;
1102         int num_aux_rtd;
1103
1104         const struct snd_kcontrol_new *controls;
1105         int num_controls;
1106
1107         /*
1108          * Card-specific routes and widgets.
1109          * Note: of_dapm_xxx for Device Tree; Otherwise for driver build-in.
1110          */
1111         const struct snd_soc_dapm_widget *dapm_widgets;
1112         int num_dapm_widgets;
1113         const struct snd_soc_dapm_route *dapm_routes;
1114         int num_dapm_routes;
1115         const struct snd_soc_dapm_widget *of_dapm_widgets;
1116         int num_of_dapm_widgets;
1117         const struct snd_soc_dapm_route *of_dapm_routes;
1118         int num_of_dapm_routes;
1119         bool fully_routed;
1120
1121         struct work_struct deferred_resume_work;
1122
1123         /* lists of probed devices belonging to this card */
1124         struct list_head codec_dev_list;
1125
1126         struct list_head widgets;
1127         struct list_head paths;
1128         struct list_head dapm_list;
1129         struct list_head dapm_dirty;
1130
1131         /* attached dynamic objects */
1132         struct list_head dobj_list;
1133
1134         /* Generic DAPM context for the card */
1135         struct snd_soc_dapm_context dapm;
1136         struct snd_soc_dapm_stats dapm_stats;
1137         struct snd_soc_dapm_update *update;
1138
1139 #ifdef CONFIG_DEBUG_FS
1140         struct dentry *debugfs_card_root;
1141         struct dentry *debugfs_pop_time;
1142 #endif
1143         u32 pop_time;
1144
1145         void *drvdata;
1146 };
1147
1148 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1149 struct snd_soc_pcm_runtime {
1150         struct device *dev;
1151         struct snd_soc_card *card;
1152         struct snd_soc_dai_link *dai_link;
1153         struct mutex pcm_mutex;
1154         enum snd_soc_pcm_subclass pcm_subclass;
1155         struct snd_pcm_ops ops;
1156
1157         unsigned int dev_registered:1;
1158
1159         /* Dynamic PCM BE runtime data */
1160         struct snd_soc_dpcm_runtime dpcm[2];
1161         int fe_compr;
1162
1163         long pmdown_time;
1164         unsigned char pop_wait:1;
1165
1166         /* runtime devices */
1167         struct snd_pcm *pcm;
1168         struct snd_compr *compr;
1169         struct snd_soc_codec *codec;
1170         struct snd_soc_platform *platform;
1171         struct snd_soc_dai *codec_dai;
1172         struct snd_soc_dai *cpu_dai;
1173         struct snd_soc_component *component; /* Only valid for AUX dev rtds */
1174
1175         struct snd_soc_dai **codec_dais;
1176         unsigned int num_codecs;
1177
1178         struct delayed_work delayed_work;
1179 #ifdef CONFIG_DEBUG_FS
1180         struct dentry *debugfs_dpcm_root;
1181         struct dentry *debugfs_dpcm_state;
1182 #endif
1183 };
1184
1185 /* mixer control */
1186 struct soc_mixer_control {
1187         int min, max, platform_max;
1188         int reg, rreg;
1189         unsigned int shift, rshift;
1190         unsigned int sign_bit;
1191         unsigned int invert:1;
1192         unsigned int autodisable:1;
1193         struct snd_soc_dobj dobj;
1194 };
1195
1196 struct soc_bytes {
1197         int base;
1198         int num_regs;
1199         u32 mask;
1200 };
1201
1202 struct soc_bytes_ext {
1203         int max;
1204         struct snd_soc_dobj dobj;
1205
1206         /* used for TLV byte control */
1207         int (*get)(unsigned int __user *bytes, unsigned int size);
1208         int (*put)(const unsigned int __user *bytes, unsigned int size);
1209 };
1210
1211 /* multi register control */
1212 struct soc_mreg_control {
1213         long min, max;
1214         unsigned int regbase, regcount, nbits, invert;
1215 };
1216
1217 /* enumerated kcontrol */
1218 struct soc_enum {
1219         int reg;
1220         unsigned char shift_l;
1221         unsigned char shift_r;
1222         unsigned int items;
1223         unsigned int mask;
1224         const char * const *texts;
1225         const unsigned int *values;
1226         unsigned int autodisable:1;
1227         struct snd_soc_dobj dobj;
1228 };
1229
1230 /**
1231  * snd_soc_component_to_codec() - Casts a component to the CODEC it is embedded in
1232  * @component: The component to cast to a CODEC
1233  *
1234  * This function must only be used on components that are known to be CODECs.
1235  * Otherwise the behavior is undefined.
1236  */
1237 static inline struct snd_soc_codec *snd_soc_component_to_codec(
1238         struct snd_soc_component *component)
1239 {
1240         return container_of(component, struct snd_soc_codec, component);
1241 }
1242
1243 /**
1244  * snd_soc_component_to_platform() - Casts a component to the platform it is embedded in
1245  * @component: The component to cast to a platform
1246  *
1247  * This function must only be used on components that are known to be platforms.
1248  * Otherwise the behavior is undefined.
1249  */
1250 static inline struct snd_soc_platform *snd_soc_component_to_platform(
1251         struct snd_soc_component *component)
1252 {
1253         return container_of(component, struct snd_soc_platform, component);
1254 }
1255
1256 /**
1257  * snd_soc_dapm_to_component() - Casts a DAPM context to the component it is
1258  *  embedded in
1259  * @dapm: The DAPM context to cast to the component
1260  *
1261  * This function must only be used on DAPM contexts that are known to be part of
1262  * a component (e.g. in a component driver). Otherwise the behavior is
1263  * undefined.
1264  */
1265 static inline struct snd_soc_component *snd_soc_dapm_to_component(
1266         struct snd_soc_dapm_context *dapm)
1267 {
1268         return container_of(dapm, struct snd_soc_component, dapm);
1269 }
1270
1271 /**
1272  * snd_soc_dapm_to_codec() - Casts a DAPM context to the CODEC it is embedded in
1273  * @dapm: The DAPM context to cast to the CODEC
1274  *
1275  * This function must only be used on DAPM contexts that are known to be part of
1276  * a CODEC (e.g. in a CODEC driver). Otherwise the behavior is undefined.
1277  */
1278 static inline struct snd_soc_codec *snd_soc_dapm_to_codec(
1279         struct snd_soc_dapm_context *dapm)
1280 {
1281         return snd_soc_component_to_codec(snd_soc_dapm_to_component(dapm));
1282 }
1283
1284 /**
1285  * snd_soc_dapm_to_platform() - Casts a DAPM context to the platform it is
1286  *  embedded in
1287  * @dapm: The DAPM context to cast to the platform.
1288  *
1289  * This function must only be used on DAPM contexts that are known to be part of
1290  * a platform (e.g. in a platform driver). Otherwise the behavior is undefined.
1291  */
1292 static inline struct snd_soc_platform *snd_soc_dapm_to_platform(
1293         struct snd_soc_dapm_context *dapm)
1294 {
1295         return snd_soc_component_to_platform(snd_soc_dapm_to_component(dapm));
1296 }
1297
1298 /**
1299  * snd_soc_component_get_dapm() - Returns the DAPM context associated with a
1300  *  component
1301  * @component: The component for which to get the DAPM context
1302  */
1303 static inline struct snd_soc_dapm_context *snd_soc_component_get_dapm(
1304         struct snd_soc_component *component)
1305 {
1306         return &component->dapm;
1307 }
1308
1309 /**
1310  * snd_soc_codec_get_dapm() - Returns the DAPM context for the CODEC
1311  * @codec: The CODEC for which to get the DAPM context
1312  *
1313  * Note: Use this function instead of directly accessing the CODEC's dapm field
1314  */
1315 static inline struct snd_soc_dapm_context *snd_soc_codec_get_dapm(
1316         struct snd_soc_codec *codec)
1317 {
1318         return snd_soc_component_get_dapm(&codec->component);
1319 }
1320
1321 /**
1322  * snd_soc_dapm_init_bias_level() - Initialize CODEC DAPM bias level
1323  * @codec: The CODEC for which to initialize the DAPM bias level
1324  * @level: The DAPM level to initialize to
1325  *
1326  * Initializes the CODEC DAPM bias level. See snd_soc_dapm_init_bias_level().
1327  */
1328 static inline void snd_soc_codec_init_bias_level(struct snd_soc_codec *codec,
1329         enum snd_soc_bias_level level)
1330 {
1331         snd_soc_dapm_init_bias_level(snd_soc_codec_get_dapm(codec), level);
1332 }
1333
1334 /**
1335  * snd_soc_dapm_get_bias_level() - Get current CODEC DAPM bias level
1336  * @codec: The CODEC for which to get the DAPM bias level
1337  *
1338  * Returns: The current DAPM bias level of the CODEC.
1339  */
1340 static inline enum snd_soc_bias_level snd_soc_codec_get_bias_level(
1341         struct snd_soc_codec *codec)
1342 {
1343         return snd_soc_dapm_get_bias_level(snd_soc_codec_get_dapm(codec));
1344 }
1345
1346 /**
1347  * snd_soc_codec_force_bias_level() - Set the CODEC DAPM bias level
1348  * @codec: The CODEC for which to set the level
1349  * @level: The level to set to
1350  *
1351  * Forces the CODEC bias level to a specific state. See
1352  * snd_soc_dapm_force_bias_level().
1353  */
1354 static inline int snd_soc_codec_force_bias_level(struct snd_soc_codec *codec,
1355         enum snd_soc_bias_level level)
1356 {
1357         return snd_soc_dapm_force_bias_level(snd_soc_codec_get_dapm(codec),
1358                 level);
1359 }
1360
1361 /**
1362  * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
1363  * @kcontrol: The kcontrol
1364  *
1365  * This function must only be used on DAPM contexts that are known to be part of
1366  * a CODEC (e.g. in a CODEC driver). Otherwise the behavior is undefined.
1367  */
1368 static inline struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(
1369         struct snd_kcontrol *kcontrol)
1370 {
1371         return snd_soc_dapm_to_codec(snd_soc_dapm_kcontrol_dapm(kcontrol));
1372 }
1373
1374 /* codec IO */
1375 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1376 int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg,
1377         unsigned int val);
1378
1379 /**
1380  * snd_soc_cache_sync() - Sync the register cache with the hardware
1381  * @codec: CODEC to sync
1382  *
1383  * Note: This function will call regcache_sync()
1384  */
1385 static inline int snd_soc_cache_sync(struct snd_soc_codec *codec)
1386 {
1387         return regcache_sync(codec->component.regmap);
1388 }
1389
1390 /* component IO */
1391 int snd_soc_component_read(struct snd_soc_component *component,
1392         unsigned int reg, unsigned int *val);
1393 int snd_soc_component_write(struct snd_soc_component *component,
1394         unsigned int reg, unsigned int val);
1395 int snd_soc_component_update_bits(struct snd_soc_component *component,
1396         unsigned int reg, unsigned int mask, unsigned int val);
1397 int snd_soc_component_update_bits_async(struct snd_soc_component *component,
1398         unsigned int reg, unsigned int mask, unsigned int val);
1399 void snd_soc_component_async_complete(struct snd_soc_component *component);
1400 int snd_soc_component_test_bits(struct snd_soc_component *component,
1401         unsigned int reg, unsigned int mask, unsigned int value);
1402
1403 #ifdef CONFIG_REGMAP
1404
1405 void snd_soc_component_init_regmap(struct snd_soc_component *component,
1406         struct regmap *regmap);
1407 void snd_soc_component_exit_regmap(struct snd_soc_component *component);
1408
1409 /**
1410  * snd_soc_codec_init_regmap() - Initialize regmap instance for the CODEC
1411  * @codec: The CODEC for which to initialize the regmap instance
1412  * @regmap: The regmap instance that should be used by the CODEC
1413  *
1414  * This function allows deferred assignment of the regmap instance that is
1415  * associated with the CODEC. Only use this if the regmap instance is not yet
1416  * ready when the CODEC is registered. The function must also be called before
1417  * the first IO attempt of the CODEC.
1418  */
1419 static inline void snd_soc_codec_init_regmap(struct snd_soc_codec *codec,
1420         struct regmap *regmap)
1421 {
1422         snd_soc_component_init_regmap(&codec->component, regmap);
1423 }
1424
1425 /**
1426  * snd_soc_codec_exit_regmap() - De-initialize regmap instance for the CODEC
1427  * @codec: The CODEC for which to de-initialize the regmap instance
1428  *
1429  * Calls regmap_exit() on the regmap instance associated to the CODEC and
1430  * removes the regmap instance from the CODEC.
1431  *
1432  * This function should only be used if snd_soc_codec_init_regmap() was used to
1433  * initialize the regmap instance.
1434  */
1435 static inline void snd_soc_codec_exit_regmap(struct snd_soc_codec *codec)
1436 {
1437         snd_soc_component_exit_regmap(&codec->component);
1438 }
1439
1440 #endif
1441
1442 /* device driver data */
1443
1444 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1445                 void *data)
1446 {
1447         card->drvdata = data;
1448 }
1449
1450 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1451 {
1452         return card->drvdata;
1453 }
1454
1455 static inline void snd_soc_component_set_drvdata(struct snd_soc_component *c,
1456                 void *data)
1457 {
1458         dev_set_drvdata(c->dev, data);
1459 }
1460
1461 static inline void *snd_soc_component_get_drvdata(struct snd_soc_component *c)
1462 {
1463         return dev_get_drvdata(c->dev);
1464 }
1465
1466 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1467                 void *data)
1468 {
1469         snd_soc_component_set_drvdata(&codec->component, data);
1470 }
1471
1472 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1473 {
1474         return snd_soc_component_get_drvdata(&codec->component);
1475 }
1476
1477 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1478                 void *data)
1479 {
1480         snd_soc_component_set_drvdata(&platform->component, data);
1481 }
1482
1483 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1484 {
1485         return snd_soc_component_get_drvdata(&platform->component);
1486 }
1487
1488 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1489                 void *data)
1490 {
1491         dev_set_drvdata(rtd->dev, data);
1492 }
1493
1494 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1495 {
1496         return dev_get_drvdata(rtd->dev);
1497 }
1498
1499 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1500 {
1501         INIT_LIST_HEAD(&card->codec_dev_list);
1502         INIT_LIST_HEAD(&card->widgets);
1503         INIT_LIST_HEAD(&card->paths);
1504         INIT_LIST_HEAD(&card->dapm_list);
1505 }
1506
1507 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1508 {
1509         if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1510                 return 0;
1511         /*
1512          * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1513          * mc->reg != mc->rreg means that the control is
1514          * stereo (bits in one register or in two registers)
1515          */
1516         return 1;
1517 }
1518
1519 static inline unsigned int snd_soc_enum_val_to_item(struct soc_enum *e,
1520         unsigned int val)
1521 {
1522         unsigned int i;
1523
1524         if (!e->values)
1525                 return val;
1526
1527         for (i = 0; i < e->items; i++)
1528                 if (val == e->values[i])
1529                         return i;
1530
1531         return 0;
1532 }
1533
1534 static inline unsigned int snd_soc_enum_item_to_val(struct soc_enum *e,
1535         unsigned int item)
1536 {
1537         if (!e->values)
1538                 return item;
1539
1540         return e->values[item];
1541 }
1542
1543 static inline bool snd_soc_component_is_active(
1544         struct snd_soc_component *component)
1545 {
1546         return component->active != 0;
1547 }
1548
1549 static inline bool snd_soc_codec_is_active(struct snd_soc_codec *codec)
1550 {
1551         return snd_soc_component_is_active(&codec->component);
1552 }
1553
1554 /**
1555  * snd_soc_kcontrol_component() - Returns the component that registered the
1556  *  control
1557  * @kcontrol: The control for which to get the component
1558  *
1559  * Note: This function will work correctly if the control has been registered
1560  * for a component. Either with snd_soc_add_codec_controls() or
1561  * snd_soc_add_platform_controls() or via  table based setup for either a
1562  * CODEC, a platform or component driver. Otherwise the behavior is undefined.
1563  */
1564 static inline struct snd_soc_component *snd_soc_kcontrol_component(
1565         struct snd_kcontrol *kcontrol)
1566 {
1567         return snd_kcontrol_chip(kcontrol);
1568 }
1569
1570 /**
1571  * snd_soc_kcontrol_codec() - Returns the CODEC that registered the control
1572  * @kcontrol: The control for which to get the CODEC
1573  *
1574  * Note: This function will only work correctly if the control has been
1575  * registered with snd_soc_add_codec_controls() or via table based setup of
1576  * snd_soc_codec_driver. Otherwise the behavior is undefined.
1577  */
1578 static inline struct snd_soc_codec *snd_soc_kcontrol_codec(
1579         struct snd_kcontrol *kcontrol)
1580 {
1581         return snd_soc_component_to_codec(snd_soc_kcontrol_component(kcontrol));
1582 }
1583
1584 /**
1585  * snd_soc_kcontrol_platform() - Returns the platform that registered the control
1586  * @kcontrol: The control for which to get the platform
1587  *
1588  * Note: This function will only work correctly if the control has been
1589  * registered with snd_soc_add_platform_controls() or via table based setup of
1590  * a snd_soc_platform_driver. Otherwise the behavior is undefined.
1591  */
1592 static inline struct snd_soc_platform *snd_soc_kcontrol_platform(
1593         struct snd_kcontrol *kcontrol)
1594 {
1595         return snd_soc_component_to_platform(snd_soc_kcontrol_component(kcontrol));
1596 }
1597
1598 int snd_soc_util_init(void);
1599 void snd_soc_util_exit(void);
1600
1601 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1602                                const char *propname);
1603 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
1604                                           const char *propname);
1605 int snd_soc_of_parse_tdm_slot(struct device_node *np,
1606                               unsigned int *slots,
1607                               unsigned int *slot_width);
1608 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
1609                                    struct snd_soc_codec_conf *codec_conf,
1610                                    struct device_node *of_node,
1611                                    const char *propname);
1612 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1613                                    const char *propname);
1614 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
1615                                      const char *prefix,
1616                                      struct device_node **bitclkmaster,
1617                                      struct device_node **framemaster);
1618 int snd_soc_of_get_dai_name(struct device_node *of_node,
1619                             const char **dai_name);
1620 int snd_soc_of_get_dai_link_codecs(struct device *dev,
1621                                    struct device_node *of_node,
1622                                    struct snd_soc_dai_link *dai_link);
1623
1624 #include <sound/soc-dai.h>
1625
1626 #ifdef CONFIG_DEBUG_FS
1627 extern struct dentry *snd_soc_debugfs_root;
1628 #endif
1629
1630 extern const struct dev_pm_ops snd_soc_pm_ops;
1631
1632 /* Helper functions */
1633 static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
1634 {
1635         mutex_lock(&dapm->card->dapm_mutex);
1636 }
1637
1638 static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
1639 {
1640         mutex_unlock(&dapm->card->dapm_mutex);
1641 }
1642
1643 #endif