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
  31 /*
  32  * Convenience kcontrol builders
  33  */
  34 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert, xautodisable) \
  35         ((unsigned long)&(struct soc_mixer_control) \
  36         {.reg = xreg, .rreg = xreg, .shift = shift_left, \
  37         .rshift = shift_right, .max = xmax, .platform_max = xmax, \
  38         .invert = xinvert, .autodisable = xautodisable})
  39 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, xautodisable) \
  40         SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert, xautodisable)
  41 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  42         ((unsigned long)&(struct soc_mixer_control) \
  43         {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
  44 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
  45         ((unsigned long)&(struct soc_mixer_control) \
  46         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  47         .max = xmax, .platform_max = xmax, .invert = xinvert})
  48 #define SOC_DOUBLE_R_S_VALUE(xlreg, xrreg, xshift, xmin, xmax, xsign_bit, xinvert) \
  49         ((unsigned long)&(struct soc_mixer_control) \
  50         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  51         .max = xmax, .min = xmin, .platform_max = xmax, .sign_bit = xsign_bit, \
  52         .invert = xinvert})
  53 #define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
  54         ((unsigned long)&(struct soc_mixer_control) \
  55         {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
  56         .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
  57 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  58 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  59         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  60         .put = snd_soc_put_volsw, \
  61         .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert, 0) }
  62 #define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
  63 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  64         .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
  65         .put = snd_soc_put_volsw_range, \
  66         .private_value = (unsigned long)&(struct soc_mixer_control) \
  67                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
  68                  .rshift = xshift,  .min = xmin, .max = xmax, \
  69                  .platform_max = xmax, .invert = xinvert} }
  70 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  71 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  72         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  73                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  74         .tlv.p = (tlv_array), \
  75         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  76         .put = snd_soc_put_volsw, \
  77         .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert, 0) }
  78 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
  79 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  80         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  81         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  82         .tlv.p  = (tlv_array),\
  83         .info = snd_soc_info_volsw, \
  84         .get = snd_soc_get_volsw_sx,\
  85         .put = snd_soc_put_volsw_sx, \
  86         .private_value = (unsigned long)&(struct soc_mixer_control) \
  87                 {.reg = xreg, .rreg = xreg, \
  88                 .shift = xshift, .rshift = xshift, \
  89                 .max = xmax, .min = xmin} }
  90 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
  91 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  92         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  93                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  94         .tlv.p = (tlv_array), \
  95         .info = snd_soc_info_volsw_range, \
  96         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
  97         .private_value = (unsigned long)&(struct soc_mixer_control) \
  98                 {.reg = xreg, .rreg = xreg, .shift = xshift, \
  99                  .rshift = xshift, .min = xmin, .max = xmax, \
 100                  .platform_max = xmax, .invert = xinvert} }
 101 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
 102 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 103         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
 104         .put = snd_soc_put_volsw, \
 105         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 106                                           max, invert, 0) }
 107 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
 108 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 109         .info = snd_soc_info_volsw, \
 110         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 111         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 112                                             xmax, xinvert) }
 113 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
 114                            xmax, xinvert)               \
 115 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 116         .info = snd_soc_info_volsw_range, \
 117         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 118         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 119                                             xshift, xmin, xmax, xinvert) }
 120 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
 121 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 122         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 123                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 124         .tlv.p = (tlv_array), \
 125         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
 126         .put = snd_soc_put_volsw, \
 127         .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
 128                                           max, invert, 0) }
 129 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
 130 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 131         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 132                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 133         .tlv.p = (tlv_array), \
 134         .info = snd_soc_info_volsw, \
 135         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 136         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 137                                             xmax, xinvert) }
 138 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
 139                                xmax, xinvert, tlv_array)                \
 140 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 141         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 142                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 143         .tlv.p = (tlv_array), \
 144         .info = snd_soc_info_volsw_range, \
 145         .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
 146         .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
 147                                             xshift, xmin, xmax, xinvert) }
 148 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
 149 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 150         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 151         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 152         .tlv.p  = (tlv_array), \
 153         .info = snd_soc_info_volsw, \
 154         .get = snd_soc_get_volsw_sx, \
 155         .put = snd_soc_put_volsw_sx, \
 156         .private_value = (unsigned long)&(struct soc_mixer_control) \
 157                 {.reg = xreg, .rreg = xrreg, \
 158                 .shift = xshift, .rshift = xshift, \
 159                 .max = xmax, .min = xmin} }
 160 #define SOC_DOUBLE_R_S_TLV(xname, reg_left, reg_right, xshift, xmin, xmax, xsign_bit, xinvert, tlv_array) \
 161 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 162         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 163                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 164         .tlv.p = (tlv_array), \
 165         .info = snd_soc_info_volsw, \
 166         .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
 167         .private_value = SOC_DOUBLE_R_S_VALUE(reg_left, reg_right, xshift, \
 168                                             xmin, xmax, xsign_bit, xinvert) }
 169 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
 170 {       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 171         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 172                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 173         .tlv.p  = (tlv_array), \
 174         .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
 175         .put    = snd_soc_put_volsw_s8, \
 176         .private_value = (unsigned long)&(struct soc_mixer_control) \
 177                 {.reg = xreg, .min = xmin, .max = xmax, \
 178                  .platform_max = xmax} }
 179 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xitems, xtexts) \
 180 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 181         .items = xitems, .texts = xtexts, \
 182         .mask = xitems ? roundup_pow_of_two(xitems) - 1 : 0}
 183 #define SOC_ENUM_SINGLE(xreg, xshift, xitems, xtexts) \
 184         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xitems, xtexts)
 185 #define SOC_ENUM_SINGLE_EXT(xitems, xtexts) \
 186 {       .items = xitems, .texts = xtexts }
 187 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xitems, xtexts, xvalues) \
 188 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 189         .mask = xmask, .items = xitems, .texts = xtexts, .values = xvalues}
 190 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xnitmes, xtexts, xvalues) \
 191         SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xnitmes, xtexts, xvalues)
 192 #define SOC_ENUM_SINGLE_VIRT(xitems, xtexts) \
 193         SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, xitems, xtexts)
 194 #define SOC_ENUM(xname, xenum) \
 195 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 196         .info = snd_soc_info_enum_double, \
 197         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 198         .private_value = (unsigned long)&xenum }
 199 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 200          xhandler_get, xhandler_put) \
 201 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 202         .info = snd_soc_info_volsw, \
 203         .get = xhandler_get, .put = xhandler_put, \
 204         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, 0) }
 205 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
 206          xhandler_get, xhandler_put) \
 207 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 208         .info = snd_soc_info_volsw, \
 209         .get = xhandler_get, .put = xhandler_put, \
 210         .private_value = \
 211                 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert, 0) }
 212 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 213          xhandler_get, xhandler_put, tlv_array) \
 214 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 215         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 216                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 217         .tlv.p = (tlv_array), \
 218         .info = snd_soc_info_volsw, \
 219         .get = xhandler_get, .put = xhandler_put, \
 220         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, 0) }
 221 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 222          xhandler_get, xhandler_put, tlv_array) \
 223 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 224         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 225                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 226         .tlv.p = (tlv_array), \
 227         .info = snd_soc_info_volsw, \
 228         .get = xhandler_get, .put = xhandler_put, \
 229         .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
 230                                           xmax, xinvert, 0) }
 231 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 232          xhandler_get, xhandler_put, tlv_array) \
 233 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 234         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 235                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 236         .tlv.p = (tlv_array), \
 237         .info = snd_soc_info_volsw, \
 238         .get = xhandler_get, .put = xhandler_put, \
 239         .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 240                                             xmax, xinvert) }
 241 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 242 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 243         .info = snd_soc_info_bool_ext, \
 244         .get = xhandler_get, .put = xhandler_put, \
 245         .private_value = xdata }
 246 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 247 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 248         .info = snd_soc_info_enum_double, \
 249         .get = xhandler_get, .put = xhandler_put, \
 250         .private_value = (unsigned long)&xenum }
 251
 252 #define SND_SOC_BYTES(xname, xbase, xregs)                    \
 253 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 254         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 255         .put = snd_soc_bytes_put, .private_value =            \
 256                 ((unsigned long)&(struct soc_bytes)           \
 257                 {.base = xbase, .num_regs = xregs }) }
 258
 259 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask)        \
 260 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
 261         .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
 262         .put = snd_soc_bytes_put, .private_value =            \
 263                 ((unsigned long)&(struct soc_bytes)           \
 264                 {.base = xbase, .num_regs = xregs,            \
 265                  .mask = xmask }) }
 266
 267 #define SND_SOC_BYTES_EXT(xname, xcount, xhandler_get, xhandler_put) \
 268 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 269         .info = snd_soc_bytes_info_ext, \
 270         .get = xhandler_get, .put = xhandler_put, \
 271         .private_value = (unsigned long)&(struct soc_bytes_ext) \
 272                 {.max = xcount} }
 273
 274 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
 275                 xmin, xmax, xinvert) \
 276 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 277         .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
 278         .put = snd_soc_put_xr_sx, \
 279         .private_value = (unsigned long)&(struct soc_mreg_control) \
 280                 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
 281                 .invert = xinvert, .min = xmin, .max = xmax} }
 282
 283 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
 284         SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
 285                 snd_soc_get_strobe, snd_soc_put_strobe)
 286
 287 /*
 288  * Simplified versions of above macros, declaring a struct and calculating
 289  * ARRAY_SIZE internally
 290  */
 291 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
 292         const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
 293                                                 ARRAY_SIZE(xtexts), xtexts)
 294 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
 295         SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
 296 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
 297         const struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
 298 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
 299         const struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
 300                                                         ARRAY_SIZE(xtexts), xtexts, xvalues)
 301 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 302         SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
 303 #define SOC_ENUM_SINGLE_VIRT_DECL(name, xtexts) \
 304         const struct soc_enum name = SOC_ENUM_SINGLE_VIRT(ARRAY_SIZE(xtexts), xtexts)
 305
 306 /*
 307  * Component probe and remove ordering levels for components with runtime
 308  * dependencies.
 309  */
 310 #define SND_SOC_COMP_ORDER_FIRST                -2
 311 #define SND_SOC_COMP_ORDER_EARLY                -1
 312 #define SND_SOC_COMP_ORDER_NORMAL               0
 313 #define SND_SOC_COMP_ORDER_LATE         1
 314 #define SND_SOC_COMP_ORDER_LAST         2
 315
 316 /*
 317  * Bias levels
 318  *
 319  * @ON:      Bias is fully on for audio playback and capture operations.
 320  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 321  *           stream start and stop operations.
 322  * @STANDBY: Low power standby state when no playback/capture operations are
 323  *           in progress. NOTE: The transition time between STANDBY and ON
 324  *           should be as fast as possible and no longer than 10ms.
 325  * @OFF:     Power Off. No restrictions on transition times.
 326  */
 327 enum snd_soc_bias_level {
 328         SND_SOC_BIAS_OFF = 0,
 329         SND_SOC_BIAS_STANDBY = 1,
 330         SND_SOC_BIAS_PREPARE = 2,
 331         SND_SOC_BIAS_ON = 3,
 332 };
 333
 334 struct device_node;
 335 struct snd_jack;
 336 struct snd_soc_card;
 337 struct snd_soc_pcm_stream;
 338 struct snd_soc_ops;
 339 struct snd_soc_pcm_runtime;
 340 struct snd_soc_dai;
 341 struct snd_soc_dai_driver;
 342 struct snd_soc_platform;
 343 struct snd_soc_dai_link;
 344 struct snd_soc_platform_driver;
 345 struct snd_soc_codec;
 346 struct snd_soc_codec_driver;
 347 struct snd_soc_component;
 348 struct snd_soc_component_driver;
 349 struct soc_enum;
 350 struct snd_soc_jack;
 351 struct snd_soc_jack_zone;
 352 struct snd_soc_jack_pin;
 353 #include <sound/soc-dapm.h>
 354 #include <sound/soc-dpcm.h>
 355
 356 struct snd_soc_jack_gpio;
 357
 358 typedef int (*hw_write_t)(void *,const char* ,int);
 359
 360 extern struct snd_ac97_bus_ops *soc_ac97_ops;
 361
 362 enum snd_soc_pcm_subclass {
 363         SND_SOC_PCM_CLASS_PCM   = 0,
 364         SND_SOC_PCM_CLASS_BE    = 1,
 365 };
 366
 367 enum snd_soc_card_subclass {
 368         SND_SOC_CARD_CLASS_INIT         = 0,
 369         SND_SOC_CARD_CLASS_RUNTIME      = 1,
 370 };
 371
 372 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 373                              int source, unsigned int freq, int dir);
 374 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
 375                           unsigned int freq_in, unsigned int freq_out);
 376
 377 int snd_soc_register_card(struct snd_soc_card *card);
 378 int snd_soc_unregister_card(struct snd_soc_card *card);
 379 int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card);
 380 int snd_soc_suspend(struct device *dev);
 381 int snd_soc_resume(struct device *dev);
 382 int snd_soc_poweroff(struct device *dev);
 383 int snd_soc_register_platform(struct device *dev,
 384                 const struct snd_soc_platform_driver *platform_drv);
 385 int devm_snd_soc_register_platform(struct device *dev,
 386                 const struct snd_soc_platform_driver *platform_drv);
 387 void snd_soc_unregister_platform(struct device *dev);
 388 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
 389                 const struct snd_soc_platform_driver *platform_drv);
 390 void snd_soc_remove_platform(struct snd_soc_platform *platform);
 391 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev);
 392 int snd_soc_register_codec(struct device *dev,
 393                 const struct snd_soc_codec_driver *codec_drv,
 394                 struct snd_soc_dai_driver *dai_drv, int num_dai);
 395 void snd_soc_unregister_codec(struct device *dev);
 396 int snd_soc_register_component(struct device *dev,
 397                          const struct snd_soc_component_driver *cmpnt_drv,
 398                          struct snd_soc_dai_driver *dai_drv, int num_dai);
 399 int devm_snd_soc_register_component(struct device *dev,
 400                          const struct snd_soc_component_driver *cmpnt_drv,
 401                          struct snd_soc_dai_driver *dai_drv, int num_dai);
 402 void snd_soc_unregister_component(struct device *dev);
 403 int snd_soc_cache_sync(struct snd_soc_codec *codec);
 404 int snd_soc_cache_init(struct snd_soc_codec *codec);
 405 int snd_soc_cache_exit(struct snd_soc_codec *codec);
 406 int snd_soc_cache_write(struct snd_soc_codec *codec,
 407                         unsigned int reg, unsigned int value);
 408 int snd_soc_cache_read(struct snd_soc_codec *codec,
 409                        unsigned int reg, unsigned int *value);
 410 int snd_soc_platform_read(struct snd_soc_platform *platform,
 411                                         unsigned int reg);
 412 int snd_soc_platform_write(struct snd_soc_platform *platform,
 413                                         unsigned int reg, unsigned int val);
 414 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
 415 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);
 416
 417 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
 418                 const char *dai_link, int stream);
 419 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
 420                 const char *dai_link);
 421
 422 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd);
 423 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream);
 424 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream);
 425
 426 /* Utility functions to get clock rates from various things */
 427 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 428 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 429 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 430 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 431
 432 /* set runtime hw params */
 433 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 434         const struct snd_pcm_hardware *hw);
 435
 436 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
 437                 int cmd, struct snd_soc_platform *platform);
 438
 439 /* Jack reporting */
 440 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
 441                      struct snd_soc_jack *jack);
 442 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 443 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 444                           struct snd_soc_jack_pin *pins);
 445 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
 446                                     struct notifier_block *nb);
 447 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
 448                                       struct notifier_block *nb);
 449 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
 450                           struct snd_soc_jack_zone *zones);
 451 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
 452 #ifdef CONFIG_GPIOLIB
 453 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 454                         struct snd_soc_jack_gpio *gpios);
 455 int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
 456                             struct snd_soc_jack *jack,
 457                             int count, struct snd_soc_jack_gpio *gpios);
 458 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 459                         struct snd_soc_jack_gpio *gpios);
 460 #else
 461 static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 462                                          struct snd_soc_jack_gpio *gpios)
 463 {
 464         return 0;
 465 }
 466
 467 static inline int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
 468                                           struct snd_soc_jack *jack,
 469                                           int count,
 470                                           struct snd_soc_jack_gpio *gpios)
 471 {
 472         return 0;
 473 }
 474
 475 static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 476                                            struct snd_soc_jack_gpio *gpios)
 477 {
 478 }
 479 #endif
 480
 481 /* codec register bit access */
 482 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned int reg,
 483                                 unsigned int mask, unsigned int value);
 484 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
 485                                unsigned int reg, unsigned int mask,
 486                                unsigned int value);
 487 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg,
 488                                 unsigned int mask, unsigned int value);
 489
 490 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 491         struct snd_ac97_bus_ops *ops, int num);
 492 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 493
 494 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);
 495 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
 496                 struct platform_device *pdev);
 497
 498 /*
 499  *Controls
 500  */
 501 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 502                                   void *data, const char *long_name,
 503                                   const char *prefix);
 504 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
 505                                                const char *name);
 506 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
 507         const struct snd_kcontrol_new *controls, int num_controls);
 508 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
 509         const struct snd_kcontrol_new *controls, int num_controls);
 510 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
 511         const struct snd_kcontrol_new *controls, int num_controls);
 512 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
 513         const struct snd_kcontrol_new *controls, int num_controls);
 514 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 515         struct snd_ctl_elem_info *uinfo);
 516 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 517         struct snd_ctl_elem_value *ucontrol);
 518 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 519         struct snd_ctl_elem_value *ucontrol);
 520 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 521         struct snd_ctl_elem_info *uinfo);
 522 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 523 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 524         struct snd_ctl_elem_value *ucontrol);
 525 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 526         struct snd_ctl_elem_value *ucontrol);
 527 #define snd_soc_get_volsw_2r snd_soc_get_volsw
 528 #define snd_soc_put_volsw_2r snd_soc_put_volsw
 529 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
 530         struct snd_ctl_elem_value *ucontrol);
 531 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 532         struct snd_ctl_elem_value *ucontrol);
 533 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 534         struct snd_ctl_elem_info *uinfo);
 535 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 536         struct snd_ctl_elem_value *ucontrol);
 537 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 538         struct snd_ctl_elem_value *ucontrol);
 539 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
 540         struct snd_ctl_elem_info *uinfo);
 541 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
 542         struct snd_ctl_elem_value *ucontrol);
 543 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
 544         struct snd_ctl_elem_value *ucontrol);
 545 int snd_soc_limit_volume(struct snd_soc_codec *codec,
 546         const char *name, int max);
 547 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
 548                        struct snd_ctl_elem_info *uinfo);
 549 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
 550                       struct snd_ctl_elem_value *ucontrol);
 551 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
 552                       struct snd_ctl_elem_value *ucontrol);
 553 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
 554         struct snd_ctl_elem_info *ucontrol);
 555 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
 556         struct snd_ctl_elem_info *uinfo);
 557 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
 558         struct snd_ctl_elem_value *ucontrol);
 559 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 560         struct snd_ctl_elem_value *ucontrol);
 561 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
 562         struct snd_ctl_elem_value *ucontrol);
 563 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
 564         struct snd_ctl_elem_value *ucontrol);
 565
 566 /**
 567  * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 568  *
 569  * @pin:    name of the pin to update
 570  * @mask:   bits to check for in reported jack status
 571  * @invert: if non-zero then pin is enabled when status is not reported
 572  */
 573 struct snd_soc_jack_pin {
 574         struct list_head list;
 575         const char *pin;
 576         int mask;
 577         bool invert;
 578 };
 579
 580 /**
 581  * struct snd_soc_jack_zone - Describes voltage zones of jack detection
 582  *
 583  * @min_mv: start voltage in mv
 584  * @max_mv: end voltage in mv
 585  * @jack_type: type of jack that is expected for this voltage
 586  * @debounce_time: debounce_time for jack, codec driver should wait for this
 587  *              duration before reading the adc for voltages
 588  * @:list: list container
 589  */
 590 struct snd_soc_jack_zone {
 591         unsigned int min_mv;
 592         unsigned int max_mv;
 593         unsigned int jack_type;
 594         unsigned int debounce_time;
 595         struct list_head list;
 596 };
 597
 598 /**
 599  * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 600  *
 601  * @gpio:         legacy gpio number
 602  * @idx:          gpio descriptor index within the function of the GPIO
 603  *                consumer device
 604  * @gpiod_dev     GPIO consumer device
 605  * @name:         gpio name. Also as connection ID for the GPIO consumer
 606  *                device function name lookup
 607  * @report:       value to report when jack detected
 608  * @invert:       report presence in low state
 609  * @debouce_time: debouce time in ms
 610  * @wake:         enable as wake source
 611  * @jack_status_check: callback function which overrides the detection
 612  *                     to provide more complex checks (eg, reading an
 613  *                     ADC).
 614  */
 615 struct snd_soc_jack_gpio {
 616         unsigned int gpio;
 617         unsigned int idx;
 618         struct device *gpiod_dev;
 619         const char *name;
 620         int report;
 621         int invert;
 622         int debounce_time;
 623         bool wake;
 624
 625         struct snd_soc_jack *jack;
 626         struct delayed_work work;
 627         struct gpio_desc *desc;
 628
 629         void *data;
 630         int (*jack_status_check)(void *data);
 631 };
 632
 633 struct snd_soc_jack {
 634         struct mutex mutex;
 635         struct snd_jack *jack;
 636         struct snd_soc_codec *codec;
 637         struct list_head pins;
 638         int status;
 639         struct blocking_notifier_head notifier;
 640         struct list_head jack_zones;
 641 };
 642
 643 /* SoC PCM stream information */
 644 struct snd_soc_pcm_stream {
 645         const char *stream_name;
 646         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 647         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 648         unsigned int rate_min;          /* min rate */
 649         unsigned int rate_max;          /* max rate */
 650         unsigned int channels_min;      /* min channels */
 651         unsigned int channels_max;      /* max channels */
 652         unsigned int sig_bits;          /* number of bits of content */
 653 };
 654
 655 /* SoC audio ops */
 656 struct snd_soc_ops {
 657         int (*startup)(struct snd_pcm_substream *);
 658         void (*shutdown)(struct snd_pcm_substream *);
 659         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 660         int (*hw_free)(struct snd_pcm_substream *);
 661         int (*prepare)(struct snd_pcm_substream *);
 662         int (*trigger)(struct snd_pcm_substream *, int);
 663 };
 664
 665 struct snd_soc_compr_ops {
 666         int (*startup)(struct snd_compr_stream *);
 667         void (*shutdown)(struct snd_compr_stream *);
 668         int (*set_params)(struct snd_compr_stream *);
 669         int (*trigger)(struct snd_compr_stream *);
 670 };
 671
 672 /* component interface */
 673 struct snd_soc_component_driver {
 674         const char *name;
 675
 676         /* DT */
 677         int (*of_xlate_dai_name)(struct snd_soc_component *component,
 678                                  struct of_phandle_args *args,
 679                                  const char **dai_name);
 680 };
 681
 682 struct snd_soc_component {
 683         const char *name;
 684         int id;
 685         struct device *dev;
 686
 687         unsigned int active;
 688
 689         unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
 690         unsigned int registered_as_component:1;
 691
 692         struct list_head list;
 693
 694         struct snd_soc_dai_driver *dai_drv;
 695         int num_dai;
 696
 697         const struct snd_soc_component_driver *driver;
 698
 699         struct list_head dai_list;
 700
 701         int (*read)(struct snd_soc_component *, unsigned int, unsigned int *);
 702         int (*write)(struct snd_soc_component *, unsigned int, unsigned int);
 703
 704         struct regmap *regmap;
 705         int val_bytes;
 706
 707         struct mutex io_mutex;
 708 };
 709
 710 /* SoC Audio Codec device */
 711 struct snd_soc_codec {
 712         const char *name;
 713         const char *name_prefix;
 714         int id;
 715         struct device *dev;
 716         const struct snd_soc_codec_driver *driver;
 717
 718         struct mutex mutex;
 719         struct snd_soc_card *card;
 720         struct list_head list;
 721         struct list_head card_list;
 722
 723         /* runtime */
 724         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 725         unsigned int cache_bypass:1; /* Suppress access to the cache */
 726         unsigned int suspended:1; /* Codec is in suspend PM state */
 727         unsigned int probed:1; /* Codec has been probed */
 728         unsigned int ac97_registered:1; /* Codec has been AC97 registered */
 729         unsigned int ac97_created:1; /* Codec has been created by SoC */
 730         unsigned int cache_init:1; /* codec cache has been initialized */
 731         u32 cache_only;  /* Suppress writes to hardware */
 732         u32 cache_sync; /* Cache needs to be synced to hardware */
 733
 734         /* codec IO */
 735         void *control_data; /* codec control (i2c/3wire) data */
 736         hw_write_t hw_write;
 737         void *reg_cache;
 738         struct mutex cache_rw_mutex;
 739
 740         /* component */
 741         struct snd_soc_component component;
 742
 743         /* dapm */
 744         struct snd_soc_dapm_context dapm;
 745
 746 #ifdef CONFIG_DEBUG_FS
 747         struct dentry *debugfs_codec_root;
 748         struct dentry *debugfs_reg;
 749 #endif
 750 };
 751
 752 /* codec driver */
 753 struct snd_soc_codec_driver {
 754
 755         /* driver ops */
 756         int (*probe)(struct snd_soc_codec *);
 757         int (*remove)(struct snd_soc_codec *);
 758         int (*suspend)(struct snd_soc_codec *);
 759         int (*resume)(struct snd_soc_codec *);
 760         struct snd_soc_component_driver component_driver;
 761
 762         /* Default control and setup, added after probe() is run */
 763         const struct snd_kcontrol_new *controls;
 764         int num_controls;
 765         const struct snd_soc_dapm_widget *dapm_widgets;
 766         int num_dapm_widgets;
 767         const struct snd_soc_dapm_route *dapm_routes;
 768         int num_dapm_routes;
 769
 770         /* codec wide operations */
 771         int (*set_sysclk)(struct snd_soc_codec *codec,
 772                           int clk_id, int source, unsigned int freq, int dir);
 773         int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
 774                 unsigned int freq_in, unsigned int freq_out);
 775
 776         /* codec IO */
 777         struct regmap *(*get_regmap)(struct device *);
 778         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 779         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 780         unsigned int reg_cache_size;
 781         short reg_cache_step;
 782         short reg_word_size;
 783         const void *reg_cache_default;
 784
 785         /* codec bias level */
 786         int (*set_bias_level)(struct snd_soc_codec *,
 787                               enum snd_soc_bias_level level);
 788         bool idle_bias_off;
 789
 790         void (*seq_notifier)(struct snd_soc_dapm_context *,
 791                              enum snd_soc_dapm_type, int);
 792
 793         /* codec stream completion event */
 794         int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 795
 796         bool ignore_pmdown_time;  /* Doesn't benefit from pmdown delay */
 797
 798         /* probe ordering - for components with runtime dependencies */
 799         int probe_order;
 800         int remove_order;
 801 };
 802
 803 /* SoC platform interface */
 804 struct snd_soc_platform_driver {
 805
 806         int (*probe)(struct snd_soc_platform *);
 807         int (*remove)(struct snd_soc_platform *);
 808         int (*suspend)(struct snd_soc_dai *dai);
 809         int (*resume)(struct snd_soc_dai *dai);
 810         struct snd_soc_component_driver component_driver;
 811
 812         /* pcm creation and destruction */
 813         int (*pcm_new)(struct snd_soc_pcm_runtime *);
 814         void (*pcm_free)(struct snd_pcm *);
 815
 816         /* Default control and setup, added after probe() is run */
 817         const struct snd_kcontrol_new *controls;
 818         int num_controls;
 819         const struct snd_soc_dapm_widget *dapm_widgets;
 820         int num_dapm_widgets;
 821         const struct snd_soc_dapm_route *dapm_routes;
 822         int num_dapm_routes;
 823
 824         /*
 825          * For platform caused delay reporting.
 826          * Optional.
 827          */
 828         snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
 829                 struct snd_soc_dai *);
 830
 831         /* platform stream pcm ops */
 832         const struct snd_pcm_ops *ops;
 833
 834         /* platform stream compress ops */
 835         const struct snd_compr_ops *compr_ops;
 836
 837         /* platform stream completion event */
 838         int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 839
 840         /* probe ordering - for components with runtime dependencies */
 841         int probe_order;
 842         int remove_order;
 843
 844         /* platform IO - used for platform DAPM */
 845         unsigned int (*read)(struct snd_soc_platform *, unsigned int);
 846         int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
 847         int (*bespoke_trigger)(struct snd_pcm_substream *, int);
 848 };
 849
 850 struct snd_soc_platform {
 851         const char *name;
 852         int id;
 853         struct device *dev;
 854         const struct snd_soc_platform_driver *driver;
 855
 856         unsigned int suspended:1; /* platform is suspended */
 857         unsigned int probed:1;
 858
 859         struct snd_soc_card *card;
 860         struct list_head list;
 861         struct list_head card_list;
 862
 863         struct snd_soc_component component;
 864
 865         struct snd_soc_dapm_context dapm;
 866
 867 #ifdef CONFIG_DEBUG_FS
 868         struct dentry *debugfs_platform_root;
 869 #endif
 870 };
 871
 872 struct snd_soc_dai_link {
 873         /* config - must be set by machine driver */
 874         const char *name;                       /* Codec name */
 875         const char *stream_name;                /* Stream name */
 876         /*
 877          * You MAY specify the link's CPU-side device, either by device name,
 878          * or by DT/OF node, but not both. If this information is omitted,
 879          * the CPU-side DAI is matched using .cpu_dai_name only, which hence
 880          * must be globally unique. These fields are currently typically used
 881          * only for codec to codec links, or systems using device tree.
 882          */
 883         const char *cpu_name;
 884         const struct device_node *cpu_of_node;
 885         /*
 886          * You MAY specify the DAI name of the CPU DAI. If this information is
 887          * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
 888          * only, which only works well when that device exposes a single DAI.
 889          */
 890         const char *cpu_dai_name;
 891         /*
 892          * You MUST specify the link's codec, either by device name, or by
 893          * DT/OF node, but not both.
 894          */
 895         const char *codec_name;
 896         const struct device_node *codec_of_node;
 897         /* You MUST specify the DAI name within the codec */
 898         const char *codec_dai_name;
 899         /*
 900          * You MAY specify the link's platform/PCM/DMA driver, either by
 901          * device name, or by DT/OF node, but not both. Some forms of link
 902          * do not need a platform.
 903          */
 904         const char *platform_name;
 905         const struct device_node *platform_of_node;
 906         int be_id;      /* optional ID for machine driver BE identification */
 907
 908         const struct snd_soc_pcm_stream *params;
 909
 910         unsigned int dai_fmt;           /* format to set on init */
 911
 912         enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
 913
 914         /* Keep DAI active over suspend */
 915         unsigned int ignore_suspend:1;
 916
 917         /* Symmetry requirements */
 918         unsigned int symmetric_rates:1;
 919         unsigned int symmetric_channels:1;
 920         unsigned int symmetric_samplebits:1;
 921
 922         /* Do not create a PCM for this DAI link (Backend link) */
 923         unsigned int no_pcm:1;
 924
 925         /* This DAI link can route to other DAI links at runtime (Frontend)*/
 926         unsigned int dynamic:1;
 927
 928         /* DPCM capture and Playback support */
 929         unsigned int dpcm_capture:1;
 930         unsigned int dpcm_playback:1;
 931
 932         /* pmdown_time is ignored at stop */
 933         unsigned int ignore_pmdown_time:1;
 934
 935         /* codec/machine specific init - e.g. add machine controls */
 936         int (*init)(struct snd_soc_pcm_runtime *rtd);
 937
 938         /* optional hw_params re-writing for BE and FE sync */
 939         int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
 940                         struct snd_pcm_hw_params *params);
 941
 942         /* machine stream operations */
 943         const struct snd_soc_ops *ops;
 944         const struct snd_soc_compr_ops *compr_ops;
 945
 946         /* For unidirectional dai links */
 947         bool playback_only;
 948         bool capture_only;
 949 };
 950
 951 struct snd_soc_codec_conf {
 952         /*
 953          * specify device either by device name, or by
 954          * DT/OF node, but not both.
 955          */
 956         const char *dev_name;
 957         const struct device_node *of_node;
 958
 959         /*
 960          * optional map of kcontrol, widget and path name prefixes that are
 961          * associated per device
 962          */
 963         const char *name_prefix;
 964 };
 965
 966 struct snd_soc_aux_dev {
 967         const char *name;               /* Codec name */
 968
 969         /*
 970          * specify multi-codec either by device name, or by
 971          * DT/OF node, but not both.
 972          */
 973         const char *codec_name;
 974         const struct device_node *codec_of_node;
 975
 976         /* codec/machine specific init - e.g. add machine controls */
 977         int (*init)(struct snd_soc_dapm_context *dapm);
 978 };
 979
 980 /* SoC card */
 981 struct snd_soc_card {
 982         const char *name;
 983         const char *long_name;
 984         const char *driver_name;
 985         struct device *dev;
 986         struct snd_card *snd_card;
 987         struct module *owner;
 988
 989         struct mutex mutex;
 990         struct mutex dapm_mutex;
 991
 992         bool instantiated;
 993
 994         int (*probe)(struct snd_soc_card *card);
 995         int (*late_probe)(struct snd_soc_card *card);
 996         int (*remove)(struct snd_soc_card *card);
 997
 998         /* the pre and post PM functions are used to do any PM work before and
 999          * after the codec and DAI's do any PM work. */
1000         int (*suspend_pre)(struct snd_soc_card *card);
1001         int (*suspend_post)(struct snd_soc_card *card);
1002         int (*resume_pre)(struct snd_soc_card *card);
1003         int (*resume_post)(struct snd_soc_card *card);
1004
1005         /* callbacks */
1006         int (*set_bias_level)(struct snd_soc_card *,
1007                               struct snd_soc_dapm_context *dapm,
1008                               enum snd_soc_bias_level level);
1009         int (*set_bias_level_post)(struct snd_soc_card *,
1010                                    struct snd_soc_dapm_context *dapm,
1011                                    enum snd_soc_bias_level level);
1012
1013         long pmdown_time;
1014
1015         /* CPU <--> Codec DAI links  */
1016         struct snd_soc_dai_link *dai_link;
1017         int num_links;
1018         struct snd_soc_pcm_runtime *rtd;
1019         int num_rtd;
1020
1021         /* optional codec specific configuration */
1022         struct snd_soc_codec_conf *codec_conf;
1023         int num_configs;
1024
1025         /*
1026          * optional auxiliary devices such as amplifiers or codecs with DAI
1027          * link unused
1028          */
1029         struct snd_soc_aux_dev *aux_dev;
1030         int num_aux_devs;
1031         struct snd_soc_pcm_runtime *rtd_aux;
1032         int num_aux_rtd;
1033
1034         const struct snd_kcontrol_new *controls;
1035         int num_controls;
1036
1037         /*
1038          * Card-specific routes and widgets.
1039          */
1040         const struct snd_soc_dapm_widget *dapm_widgets;
1041         int num_dapm_widgets;
1042         const struct snd_soc_dapm_route *dapm_routes;
1043         int num_dapm_routes;
1044         bool fully_routed;
1045
1046         struct work_struct deferred_resume_work;
1047
1048         /* lists of probed devices belonging to this card */
1049         struct list_head codec_dev_list;
1050         struct list_head platform_dev_list;
1051
1052         struct list_head widgets;
1053         struct list_head paths;
1054         struct list_head dapm_list;
1055         struct list_head dapm_dirty;
1056
1057         /* Generic DAPM context for the card */
1058         struct snd_soc_dapm_context dapm;
1059         struct snd_soc_dapm_stats dapm_stats;
1060         struct snd_soc_dapm_update *update;
1061
1062 #ifdef CONFIG_DEBUG_FS
1063         struct dentry *debugfs_card_root;
1064         struct dentry *debugfs_pop_time;
1065 #endif
1066         u32 pop_time;
1067
1068         void *drvdata;
1069 };
1070
1071 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1072 struct snd_soc_pcm_runtime {
1073         struct device *dev;
1074         struct snd_soc_card *card;
1075         struct snd_soc_dai_link *dai_link;
1076         struct mutex pcm_mutex;
1077         enum snd_soc_pcm_subclass pcm_subclass;
1078         struct snd_pcm_ops ops;
1079
1080         unsigned int dev_registered:1;
1081
1082         /* Dynamic PCM BE runtime data */
1083         struct snd_soc_dpcm_runtime dpcm[2];
1084         int fe_compr;
1085
1086         long pmdown_time;
1087         unsigned char pop_wait:1;
1088
1089         /* runtime devices */
1090         struct snd_pcm *pcm;
1091         struct snd_compr *compr;
1092         struct snd_soc_codec *codec;
1093         struct snd_soc_platform *platform;
1094         struct snd_soc_dai *codec_dai;
1095         struct snd_soc_dai *cpu_dai;
1096
1097         struct delayed_work delayed_work;
1098 #ifdef CONFIG_DEBUG_FS
1099         struct dentry *debugfs_dpcm_root;
1100         struct dentry *debugfs_dpcm_state;
1101 #endif
1102 };
1103
1104 /* mixer control */
1105 struct soc_mixer_control {
1106         int min, max, platform_max;
1107         int reg, rreg;
1108         unsigned int shift, rshift;
1109         unsigned int sign_bit;
1110         unsigned int invert:1;
1111         unsigned int autodisable:1;
1112 };
1113
1114 struct soc_bytes {
1115         int base;
1116         int num_regs;
1117         u32 mask;
1118 };
1119
1120 struct soc_bytes_ext {
1121         int max;
1122 };
1123
1124 /* multi register control */
1125 struct soc_mreg_control {
1126         long min, max;
1127         unsigned int regbase, regcount, nbits, invert;
1128 };
1129
1130 /* enumerated kcontrol */
1131 struct soc_enum {
1132         int reg;
1133         unsigned char shift_l;
1134         unsigned char shift_r;
1135         unsigned int items;
1136         unsigned int mask;
1137         const char * const *texts;
1138         const unsigned int *values;
1139 };
1140
1141 /**
1142  * snd_soc_component_to_codec() - Casts a component to the CODEC it is embedded in
1143  * @component: The component to cast to a CODEC
1144  *
1145  * This function must only be used on components that are known to be CODECs.
1146  * Otherwise the behavior is undefined.
1147  */
1148 static inline struct snd_soc_codec *snd_soc_component_to_codec(
1149         struct snd_soc_component *component)
1150 {
1151         return container_of(component, struct snd_soc_codec, component);
1152 }
1153
1154 /**
1155  * snd_soc_component_to_platform() - Casts a component to the platform it is embedded in
1156  * @component: The component to cast to a platform
1157  *
1158  * This function must only be used on components that are known to be platforms.
1159  * Otherwise the behavior is undefined.
1160  */
1161 static inline struct snd_soc_platform *snd_soc_component_to_platform(
1162         struct snd_soc_component *component)
1163 {
1164         return container_of(component, struct snd_soc_platform, component);
1165 }
1166
1167 /**
1168  * snd_soc_dapm_to_codec() - Casts a DAPM context to the CODEC it is embedded in
1169  * @dapm: The DAPM context to cast to the CODEC
1170  *
1171  * This function must only be used on DAPM contexts that are known to be part of
1172  * a CODEC (e.g. in a CODEC driver). Otherwise the behavior is undefined.
1173  */
1174 static inline struct snd_soc_codec *snd_soc_dapm_to_codec(
1175         struct snd_soc_dapm_context *dapm)
1176 {
1177         return container_of(dapm, struct snd_soc_codec, dapm);
1178 }
1179
1180 /**
1181  * snd_soc_dapm_to_platform() - Casts a DAPM context to the platform it is
1182  *  embedded in
1183  * @dapm: The DAPM context to cast to the platform.
1184  *
1185  * This function must only be used on DAPM contexts that are known to be part of
1186  * a platform (e.g. in a platform driver). Otherwise the behavior is undefined.
1187  */
1188 static inline struct snd_soc_platform *snd_soc_dapm_to_platform(
1189         struct snd_soc_dapm_context *dapm)
1190 {
1191         return container_of(dapm, struct snd_soc_platform, dapm);
1192 }
1193
1194 /* codec IO */
1195 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1196 int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg,
1197         unsigned int val);
1198
1199 /* component IO */
1200 int snd_soc_component_read(struct snd_soc_component *component,
1201         unsigned int reg, unsigned int *val);
1202 int snd_soc_component_write(struct snd_soc_component *component,
1203         unsigned int reg, unsigned int val);
1204 int snd_soc_component_update_bits(struct snd_soc_component *component,
1205         unsigned int reg, unsigned int mask, unsigned int val);
1206 int snd_soc_component_update_bits_async(struct snd_soc_component *component,
1207         unsigned int reg, unsigned int mask, unsigned int val);
1208 void snd_soc_component_async_complete(struct snd_soc_component *component);
1209 int snd_soc_component_test_bits(struct snd_soc_component *component,
1210         unsigned int reg, unsigned int mask, unsigned int value);
1211
1212 int snd_soc_component_init_io(struct snd_soc_component *component,
1213         struct regmap *regmap);
1214
1215 /* device driver data */
1216
1217 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1218                 void *data)
1219 {
1220         card->drvdata = data;
1221 }
1222
1223 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1224 {
1225         return card->drvdata;
1226 }
1227
1228 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1229                 void *data)
1230 {
1231         dev_set_drvdata(codec->dev, data);
1232 }
1233
1234 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1235 {
1236         return dev_get_drvdata(codec->dev);
1237 }
1238
1239 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1240                 void *data)
1241 {
1242         dev_set_drvdata(platform->dev, data);
1243 }
1244
1245 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1246 {
1247         return dev_get_drvdata(platform->dev);
1248 }
1249
1250 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1251                 void *data)
1252 {
1253         dev_set_drvdata(rtd->dev, data);
1254 }
1255
1256 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1257 {
1258         return dev_get_drvdata(rtd->dev);
1259 }
1260
1261 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1262 {
1263         INIT_LIST_HEAD(&card->codec_dev_list);
1264         INIT_LIST_HEAD(&card->platform_dev_list);
1265         INIT_LIST_HEAD(&card->widgets);
1266         INIT_LIST_HEAD(&card->paths);
1267         INIT_LIST_HEAD(&card->dapm_list);
1268 }
1269
1270 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1271 {
1272         if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1273                 return 0;
1274         /*
1275          * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1276          * mc->reg != mc->rreg means that the control is
1277          * stereo (bits in one register or in two registers)
1278          */
1279         return 1;
1280 }
1281
1282 static inline unsigned int snd_soc_enum_val_to_item(struct soc_enum *e,
1283         unsigned int val)
1284 {
1285         unsigned int i;
1286
1287         if (!e->values)
1288                 return val;
1289
1290         for (i = 0; i < e->items; i++)
1291                 if (val == e->values[i])
1292                         return i;
1293
1294         return 0;
1295 }
1296
1297 static inline unsigned int snd_soc_enum_item_to_val(struct soc_enum *e,
1298         unsigned int item)
1299 {
1300         if (!e->values)
1301                 return item;
1302
1303         return e->values[item];
1304 }
1305
1306 static inline bool snd_soc_component_is_active(
1307         struct snd_soc_component *component)
1308 {
1309         return component->active != 0;
1310 }
1311
1312 static inline bool snd_soc_codec_is_active(struct snd_soc_codec *codec)
1313 {
1314         return snd_soc_component_is_active(&codec->component);
1315 }
1316
1317 /**
1318  * snd_soc_kcontrol_component() - Returns the component that registered the
1319  *  control
1320  * @kcontrol: The control for which to get the component
1321  *
1322  * Note: This function will work correctly if the control has been registered
1323  * for a component. Either with snd_soc_add_codec_controls() or
1324  * snd_soc_add_platform_controls() or via  table based setup for either a
1325  * CODEC, a platform or component driver. Otherwise the behavior is undefined.
1326  */
1327 static inline struct snd_soc_component *snd_soc_kcontrol_component(
1328         struct snd_kcontrol *kcontrol)
1329 {
1330         return snd_kcontrol_chip(kcontrol);
1331 }
1332
1333 /**
1334  * snd_soc_kcontrol_codec() - Returns the CODEC that registered the control
1335  * @kcontrol: The control for which to get the CODEC
1336  *
1337  * Note: This function will only work correctly if the control has been
1338  * registered with snd_soc_add_codec_controls() or via table based setup of
1339  * snd_soc_codec_driver. Otherwise the behavior is undefined.
1340  */
1341 static inline struct snd_soc_codec *snd_soc_kcontrol_codec(
1342         struct snd_kcontrol *kcontrol)
1343 {
1344         return snd_soc_component_to_codec(snd_soc_kcontrol_component(kcontrol));
1345 }
1346
1347 /**
1348  * snd_soc_kcontrol_platform() - Returns the platform that registerd the control
1349  * @kcontrol: The control for which to get the platform
1350  *
1351  * Note: This function will only work correctly if the control has been
1352  * registered with snd_soc_add_platform_controls() or via table based setup of
1353  * a snd_soc_platform_driver. Otherwise the behavior is undefined.
1354  */
1355 static inline struct snd_soc_platform *snd_soc_kcontrol_platform(
1356         struct snd_kcontrol *kcontrol)
1357 {
1358         return snd_soc_component_to_platform(snd_soc_kcontrol_component(kcontrol));
1359 }
1360
1361 int snd_soc_util_init(void);
1362 void snd_soc_util_exit(void);
1363
1364 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1365                                const char *propname);
1366 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
1367                                           const char *propname);
1368 int snd_soc_of_parse_tdm_slot(struct device_node *np,
1369                               unsigned int *slots,
1370                               unsigned int *slot_width);
1371 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1372                                    const char *propname);
1373 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
1374                                      const char *prefix,
1375                                      struct device_node **bitclkmaster,
1376                                      struct device_node **framemaster);
1377 int snd_soc_of_get_dai_name(struct device_node *of_node,
1378                             const char **dai_name);
1379
1380 #include <sound/soc-dai.h>
1381
1382 #ifdef CONFIG_DEBUG_FS
1383 extern struct dentry *snd_soc_debugfs_root;
1384 #endif
1385
1386 extern const struct dev_pm_ops snd_soc_pm_ops;
1387
1388 /* Helper functions */
1389 static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
1390 {
1391         mutex_lock(&dapm->card->dapm_mutex);
1392 }
1393
1394 static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
1395 {
1396         mutex_unlock(&dapm->card->dapm_mutex);
1397 }
1398
1399 #endif