include/sound/soc.h

   1 /*
   2  * linux/sound/soc.h -- ALSA SoC Layer
   3  *
   4  * Author:              Liam Girdwood
   5  * Created:             Aug 11th 2005
   6  * Copyright:   Wolfson Microelectronics. PLC.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef __LINUX_SND_SOC_H
  14 #define __LINUX_SND_SOC_H
  15
  16 #include <linux/platform_device.h>
  17 #include <linux/types.h>
  18 #include <linux/notifier.h>
  19 #include <linux/workqueue.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/kernel.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/control.h>
  25 #include <sound/ac97_codec.h>
  26
  27 /*
  28  * Convenience kcontrol builders
  29  */
  30 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
  31         ((unsigned long)&(struct soc_mixer_control) \
  32         {.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
  33         .platform_max = xmax, .invert = xinvert})
  34 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  35         ((unsigned long)&(struct soc_mixer_control) \
  36         {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
  37 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  38 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  39         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  40         .put = snd_soc_put_volsw, \
  41         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  42 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  43 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  44         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  45                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  46         .tlv.p = (tlv_array), \
  47         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  48         .put = snd_soc_put_volsw, \
  49         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  50 #define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \
  51 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  52         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  53         .put = snd_soc_put_volsw, \
  54         .private_value = (unsigned long)&(struct soc_mixer_control) \
  55                 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
  56                  .max = xmax, .platform_max = xmax, .invert = xinvert} }
  57 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
  58 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  59         .info = snd_soc_info_volsw_2r, \
  60         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  61         .private_value = (unsigned long)&(struct soc_mixer_control) \
  62                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  63                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
  64 #define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \
  65 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  66         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  67                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  68         .tlv.p = (tlv_array), \
  69         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  70         .put = snd_soc_put_volsw, \
  71         .private_value = (unsigned long)&(struct soc_mixer_control) \
  72                 {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
  73                  .max = xmax, .platform_max = xmax, .invert = xinvert} }
  74 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
  75 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  76         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  77                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  78         .tlv.p = (tlv_array), \
  79         .info = snd_soc_info_volsw_2r, \
  80         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  81         .private_value = (unsigned long)&(struct soc_mixer_control) \
  82                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  83                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
  84 #define SOC_DOUBLE_S8_TLV(xname, xreg, 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_s8, .get = snd_soc_get_volsw_s8, \
  90         .put    = snd_soc_put_volsw_s8, \
  91         .private_value = (unsigned long)&(struct soc_mixer_control) \
  92                 {.reg = xreg, .min = xmin, .max = xmax, \
  93                  .platform_max = xmax} }
  94 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
  95 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  96         .max = xmax, .texts = xtexts }
  97 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
  98         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
  99 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
 100 {       .max = xmax, .texts = xtexts }
 101 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
 102 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 103         .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
 104 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
 105         SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
 106 #define SOC_ENUM(xname, xenum) \
 107 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 108         .info = snd_soc_info_enum_double, \
 109         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 110         .private_value = (unsigned long)&xenum }
 111 #define SOC_VALUE_ENUM(xname, xenum) \
 112 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 113         .info = snd_soc_info_enum_double, \
 114         .get = snd_soc_get_value_enum_double, \
 115         .put = snd_soc_put_value_enum_double, \
 116         .private_value = (unsigned long)&xenum }
 117 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 118          xhandler_get, xhandler_put) \
 119 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 120         .info = snd_soc_info_volsw, \
 121         .get = xhandler_get, .put = xhandler_put, \
 122         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 123 #define SOC_DOUBLE_EXT(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 124          xhandler_get, xhandler_put) \
 125 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 126         .info = snd_soc_info_volsw, \
 127         .get = xhandler_get, .put = xhandler_put, \
 128         .private_value = (unsigned long)&(struct soc_mixer_control) \
 129                 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 130                  .max = xmax, .platform_max = xmax, .invert = xinvert} }
 131 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 132          xhandler_get, xhandler_put, tlv_array) \
 133 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 134         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 135                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 136         .tlv.p = (tlv_array), \
 137         .info = snd_soc_info_volsw, \
 138         .get = xhandler_get, .put = xhandler_put, \
 139         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 140 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 141          xhandler_get, xhandler_put, tlv_array) \
 142 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 143         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 144                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 145         .tlv.p = (tlv_array), \
 146         .info = snd_soc_info_volsw, \
 147         .get = xhandler_get, .put = xhandler_put, \
 148         .private_value = (unsigned long)&(struct soc_mixer_control) \
 149                 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 150                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
 151 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 152          xhandler_get, xhandler_put, tlv_array) \
 153 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 154         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 155                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 156         .tlv.p = (tlv_array), \
 157         .info = snd_soc_info_volsw_2r, \
 158         .get = xhandler_get, .put = xhandler_put, \
 159         .private_value = (unsigned long)&(struct soc_mixer_control) \
 160                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 161                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
 162 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 163 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 164         .info = snd_soc_info_bool_ext, \
 165         .get = xhandler_get, .put = xhandler_put, \
 166         .private_value = xdata }
 167 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 168 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 169         .info = snd_soc_info_enum_ext, \
 170         .get = xhandler_get, .put = xhandler_put, \
 171         .private_value = (unsigned long)&xenum }
 172
 173 #define SOC_DOUBLE_R_SX_TLV(xname, xreg_left, xreg_right, xshift,\
 174                 xmin, xmax, tlv_array) \
 175 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 176         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 177                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 178         .tlv.p = (tlv_array), \
 179         .info = snd_soc_info_volsw_2r_sx, \
 180         .get = snd_soc_get_volsw_2r_sx, \
 181         .put = snd_soc_put_volsw_2r_sx, \
 182         .private_value = (unsigned long)&(struct soc_mixer_control) \
 183                 {.reg = xreg_left, \
 184                  .rreg = xreg_right, .shift = xshift, \
 185                  .min = xmin, .max = xmax} }
 186
 187
 188 /*
 189  * Simplified versions of above macros, declaring a struct and calculating
 190  * ARRAY_SIZE internally
 191  */
 192 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
 193         struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
 194                                                 ARRAY_SIZE(xtexts), xtexts)
 195 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
 196         SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
 197 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
 198         struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
 199 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
 200         struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
 201                                                         ARRAY_SIZE(xtexts), xtexts, xvalues)
 202 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 203         SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
 204
 205 /*
 206  * Bias levels
 207  *
 208  * @ON:      Bias is fully on for audio playback and capture operations.
 209  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 210  *           stream start and stop operations.
 211  * @STANDBY: Low power standby state when no playback/capture operations are
 212  *           in progress. NOTE: The transition time between STANDBY and ON
 213  *           should be as fast as possible and no longer than 10ms.
 214  * @OFF:     Power Off. No restrictions on transition times.
 215  */
 216 enum snd_soc_bias_level {
 217         SND_SOC_BIAS_ON,
 218         SND_SOC_BIAS_PREPARE,
 219         SND_SOC_BIAS_STANDBY,
 220         SND_SOC_BIAS_OFF,
 221 };
 222
 223 struct snd_jack;
 224 struct snd_soc_card;
 225 struct snd_soc_device;
 226 struct snd_soc_pcm_stream;
 227 struct snd_soc_ops;
 228 struct snd_soc_dai_mode;
 229 struct snd_soc_pcm_runtime;
 230 struct snd_soc_dai;
 231 struct snd_soc_dai_driver;
 232 struct snd_soc_platform;
 233 struct snd_soc_dai_link;
 234 struct snd_soc_platform_driver;
 235 struct snd_soc_codec;
 236 struct snd_soc_codec_driver;
 237 struct soc_enum;
 238 struct snd_soc_ac97_ops;
 239 struct snd_soc_jack;
 240 struct snd_soc_jack_pin;
 241
 242 #ifdef CONFIG_GPIOLIB
 243 struct snd_soc_jack_gpio;
 244 #endif
 245
 246 typedef int (*hw_write_t)(void *,const char* ,int);
 247
 248 extern struct snd_ac97_bus_ops soc_ac97_ops;
 249
 250 enum snd_soc_control_type {
 251         SND_SOC_CUSTOM,
 252         SND_SOC_I2C,
 253         SND_SOC_SPI,
 254 };
 255
 256 int snd_soc_register_platform(struct device *dev,
 257                 struct snd_soc_platform_driver *platform_drv);
 258 void snd_soc_unregister_platform(struct device *dev);
 259 int snd_soc_register_codec(struct device *dev,
 260                 struct snd_soc_codec_driver *codec_drv,
 261                 struct snd_soc_dai_driver *dai_drv, int num_dai);
 262 void snd_soc_unregister_codec(struct device *dev);
 263 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg);
 264 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 265                                int addr_bits, int data_bits,
 266                                enum snd_soc_control_type control);
 267
 268 /* Utility functions to get clock rates from various things */
 269 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 270 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 271 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 272 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 273
 274 /* set runtime hw params */
 275 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 276         const struct snd_pcm_hardware *hw);
 277
 278 /* Jack reporting */
 279 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
 280                      struct snd_soc_jack *jack);
 281 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 282 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 283                           struct snd_soc_jack_pin *pins);
 284 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
 285                                     struct notifier_block *nb);
 286 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
 287                                       struct notifier_block *nb);
 288 #ifdef CONFIG_GPIOLIB
 289 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 290                         struct snd_soc_jack_gpio *gpios);
 291 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 292                         struct snd_soc_jack_gpio *gpios);
 293 #endif
 294
 295 /* codec register bit access */
 296 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 297                                 unsigned int mask, unsigned int value);
 298 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
 299                                unsigned short reg, unsigned int mask,
 300                                unsigned int value);
 301 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 302                                 unsigned int mask, unsigned int value);
 303
 304 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 305         struct snd_ac97_bus_ops *ops, int num);
 306 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 307
 308 /*
 309  *Controls
 310  */
 311 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 312         void *data, char *long_name);
 313 int snd_soc_add_controls(struct snd_soc_codec *codec,
 314         const struct snd_kcontrol_new *controls, int num_controls);
 315 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 316         struct snd_ctl_elem_info *uinfo);
 317 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 318         struct snd_ctl_elem_info *uinfo);
 319 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 320         struct snd_ctl_elem_value *ucontrol);
 321 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 322         struct snd_ctl_elem_value *ucontrol);
 323 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
 324         struct snd_ctl_elem_value *ucontrol);
 325 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 326         struct snd_ctl_elem_value *ucontrol);
 327 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 328         struct snd_ctl_elem_info *uinfo);
 329 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 330         struct snd_ctl_elem_info *uinfo);
 331 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 332 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 333         struct snd_ctl_elem_value *ucontrol);
 334 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 335         struct snd_ctl_elem_value *ucontrol);
 336 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 337         struct snd_ctl_elem_info *uinfo);
 338 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 339         struct snd_ctl_elem_value *ucontrol);
 340 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 341         struct snd_ctl_elem_value *ucontrol);
 342 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 343         struct snd_ctl_elem_info *uinfo);
 344 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 345         struct snd_ctl_elem_value *ucontrol);
 346 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 347         struct snd_ctl_elem_value *ucontrol);
 348 int snd_soc_limit_volume(struct snd_soc_codec *codec,
 349         const char *name, int max);
 350 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
 351         struct snd_ctl_elem_info *uinfo);
 352 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
 353         struct snd_ctl_elem_value *ucontrol);
 354 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
 355         struct snd_ctl_elem_value *ucontrol);
 356
 357 /**
 358  * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 359  *
 360  * @pin:    name of the pin to update
 361  * @mask:   bits to check for in reported jack status
 362  * @invert: if non-zero then pin is enabled when status is not reported
 363  */
 364 struct snd_soc_jack_pin {
 365         struct list_head list;
 366         const char *pin;
 367         int mask;
 368         bool invert;
 369 };
 370
 371 /**
 372  * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 373  *
 374  * @gpio:         gpio number
 375  * @name:         gpio name
 376  * @report:       value to report when jack detected
 377  * @invert:       report presence in low state
 378  * @debouce_time: debouce time in ms
 379  */
 380 #ifdef CONFIG_GPIOLIB
 381 struct snd_soc_jack_gpio {
 382         unsigned int gpio;
 383         const char *name;
 384         int report;
 385         int invert;
 386         int debounce_time;
 387         struct snd_soc_jack *jack;
 388         struct work_struct work;
 389
 390         int (*jack_status_check)(void);
 391 };
 392 #endif
 393
 394 struct snd_soc_jack {
 395         struct snd_jack *jack;
 396         struct snd_soc_codec *codec;
 397         struct list_head pins;
 398         int status;
 399         struct blocking_notifier_head notifier;
 400 };
 401
 402 /* SoC PCM stream information */
 403 struct snd_soc_pcm_stream {
 404         const char *stream_name;
 405         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 406         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 407         unsigned int rate_min;          /* min rate */
 408         unsigned int rate_max;          /* max rate */
 409         unsigned int channels_min;      /* min channels */
 410         unsigned int channels_max;      /* max channels */
 411 };
 412
 413 /* SoC audio ops */
 414 struct snd_soc_ops {
 415         int (*startup)(struct snd_pcm_substream *);
 416         void (*shutdown)(struct snd_pcm_substream *);
 417         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 418         int (*hw_free)(struct snd_pcm_substream *);
 419         int (*prepare)(struct snd_pcm_substream *);
 420         int (*trigger)(struct snd_pcm_substream *, int);
 421 };
 422
 423 /* SoC Audio Codec device */
 424 struct snd_soc_codec {
 425         const char *name;
 426         int id;
 427         struct device *dev;
 428         struct snd_soc_codec_driver *driver;
 429
 430         struct mutex mutex;
 431         struct snd_soc_card *card;
 432         struct list_head list;
 433         struct list_head card_list;
 434         int num_dai;
 435
 436         /* runtime */
 437         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 438         unsigned int active;
 439         unsigned int idle_bias_off:1; /* Use BIAS_OFF instead of STANDBY */
 440         unsigned int cache_only:1;  /* Suppress writes to hardware */
 441         unsigned int cache_sync:1; /* Cache needs to be synced to hardware */
 442         unsigned int suspended:1; /* Codec is in suspend PM state */
 443         unsigned int probed:1; /* Codec has been probed */
 444         unsigned int ac97_registered:1; /* Codec has been AC97 registered */
 445         unsigned int sysfs_registered:1; /* codec has been sysfs registered */
 446
 447         /* codec IO */
 448         void *control_data; /* codec control (i2c/3wire) data */
 449         hw_write_t hw_write;
 450         unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
 451         void *reg_cache;
 452
 453         /* dapm */
 454         u32 pop_time;
 455         struct list_head dapm_widgets;
 456         struct list_head dapm_paths;
 457         enum snd_soc_bias_level bias_level;
 458         enum snd_soc_bias_level suspend_bias_level;
 459         struct delayed_work delayed_work;
 460
 461 #ifdef CONFIG_DEBUG_FS
 462         struct dentry *debugfs_codec_root;
 463         struct dentry *debugfs_reg;
 464         struct dentry *debugfs_pop_time;
 465         struct dentry *debugfs_dapm;
 466 #endif
 467 };
 468
 469 /* codec driver */
 470 struct snd_soc_codec_driver {
 471
 472         /* driver ops */
 473         int (*probe)(struct snd_soc_codec *);
 474         int (*remove)(struct snd_soc_codec *);
 475         int (*suspend)(struct snd_soc_codec *,
 476                         pm_message_t state);
 477         int (*resume)(struct snd_soc_codec *);
 478
 479         /* codec IO */
 480         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 481         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 482         int (*display_register)(struct snd_soc_codec *, char *,
 483                                 size_t, unsigned int);
 484         int (*volatile_register)(unsigned int);
 485         int (*readable_register)(unsigned int);
 486         short reg_cache_size;
 487         short reg_cache_step;
 488         short reg_word_size;
 489         const void *reg_cache_default;
 490
 491         /* codec bias level */
 492         int (*set_bias_level)(struct snd_soc_codec *,
 493                               enum snd_soc_bias_level level);
 494 };
 495
 496 /* SoC platform interface */
 497 struct snd_soc_platform_driver {
 498
 499         int (*probe)(struct snd_soc_platform *);
 500         int (*remove)(struct snd_soc_platform *);
 501         int (*suspend)(struct snd_soc_dai *dai);
 502         int (*resume)(struct snd_soc_dai *dai);
 503
 504         /* pcm creation and destruction */
 505         int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
 506                 struct snd_pcm *);
 507         void (*pcm_free)(struct snd_pcm *);
 508
 509         /*
 510          * For platform caused delay reporting.
 511          * Optional.
 512          */
 513         snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
 514                 struct snd_soc_dai *);
 515
 516         /* platform stream ops */
 517         struct snd_pcm_ops *ops;
 518 };
 519
 520 struct snd_soc_platform {
 521         const char *name;
 522         int id;
 523         struct device *dev;
 524         struct snd_soc_platform_driver *driver;
 525
 526         unsigned int suspended:1; /* platform is suspended */
 527         unsigned int probed:1;
 528
 529         struct snd_soc_card *card;
 530         struct list_head list;
 531         struct list_head card_list;
 532 };
 533
 534 struct snd_soc_dai_link {
 535         /* config - must be set by machine driver */
 536         const char *name;                       /* Codec name */
 537         const char *stream_name;                /* Stream name */
 538         const char *codec_name;         /* for multi-codec */
 539         const char *platform_name;      /* for multi-platform */
 540         const char *cpu_dai_name;
 541         const char *codec_dai_name;
 542
 543         /* Keep DAI active over suspend */
 544         unsigned int ignore_suspend:1;
 545
 546         /* Symmetry requirements */
 547         unsigned int symmetric_rates:1;
 548
 549         /* codec/machine specific init - e.g. add machine controls */
 550         int (*init)(struct snd_soc_pcm_runtime *rtd);
 551
 552         /* machine stream operations */
 553         struct snd_soc_ops *ops;
 554 };
 555
 556 /* SoC card */
 557 struct snd_soc_card {
 558         const char *name;
 559         struct device *dev;
 560         struct snd_card *snd_card;
 561         struct module *owner;
 562
 563         struct list_head list;
 564         struct mutex mutex;
 565
 566         bool instantiated;
 567
 568         int (*probe)(struct platform_device *pdev);
 569         int (*remove)(struct platform_device *pdev);
 570
 571         /* the pre and post PM functions are used to do any PM work before and
 572          * after the codec and DAI's do any PM work. */
 573         int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 574         int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 575         int (*resume_pre)(struct platform_device *pdev);
 576         int (*resume_post)(struct platform_device *pdev);
 577
 578         /* callbacks */
 579         int (*set_bias_level)(struct snd_soc_card *,
 580                               enum snd_soc_bias_level level);
 581
 582         long pmdown_time;
 583
 584         /* CPU <--> Codec DAI links  */
 585         struct snd_soc_dai_link *dai_link;
 586         int num_links;
 587         struct snd_soc_pcm_runtime *rtd;
 588         int num_rtd;
 589
 590         struct work_struct deferred_resume_work;
 591
 592         /* lists of probed devices belonging to this card */
 593         struct list_head codec_dev_list;
 594         struct list_head platform_dev_list;
 595         struct list_head dai_dev_list;
 596 };
 597
 598 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 599 struct snd_soc_pcm_runtime  {
 600         struct device dev;
 601         struct snd_soc_card *card;
 602         struct snd_soc_dai_link *dai_link;
 603
 604         unsigned int complete:1;
 605         unsigned int dev_registered:1;
 606
 607         /* Symmetry data - only valid if symmetry is being enforced */
 608         unsigned int rate;
 609         long pmdown_time;
 610
 611         /* runtime devices */
 612         struct snd_pcm *pcm;
 613         struct snd_soc_codec *codec;
 614         struct snd_soc_platform *platform;
 615         struct snd_soc_dai *codec_dai;
 616         struct snd_soc_dai *cpu_dai;
 617
 618         struct delayed_work delayed_work;
 619 };
 620
 621 /* mixer control */
 622 struct soc_mixer_control {
 623         int min, max, platform_max;
 624         unsigned int reg, rreg, shift, rshift, invert;
 625 };
 626
 627 /* enumerated kcontrol */
 628 struct soc_enum {
 629         unsigned short reg;
 630         unsigned short reg2;
 631         unsigned char shift_l;
 632         unsigned char shift_r;
 633         unsigned int max;
 634         unsigned int mask;
 635         const char **texts;
 636         const unsigned int *values;
 637         void *dapm;
 638 };
 639
 640 /* codec IO */
 641 static inline unsigned int snd_soc_read(struct snd_soc_codec *codec,
 642                                         unsigned int reg)
 643 {
 644         return codec->driver->read(codec, reg);
 645 }
 646
 647 static inline unsigned int snd_soc_write(struct snd_soc_codec *codec,
 648                                          unsigned int reg, unsigned int val)
 649 {
 650         return codec->driver->write(codec, reg, val);
 651 }
 652
 653 /* device driver data */
 654
 655 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
 656                 void *data)
 657 {
 658         dev_set_drvdata(codec->dev, data);
 659 }
 660
 661 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
 662 {
 663         return dev_get_drvdata(codec->dev);
 664 }
 665
 666 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
 667                 void *data)
 668 {
 669         dev_set_drvdata(platform->dev, data);
 670 }
 671
 672 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
 673 {
 674         return dev_get_drvdata(platform->dev);
 675 }
 676
 677 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
 678                 void *data)
 679 {
 680         dev_set_drvdata(&rtd->dev, data);
 681 }
 682
 683 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
 684 {
 685         return dev_get_drvdata(&rtd->dev);
 686 }
 687
 688 #include <sound/soc-dai.h>
 689
 690 #endif