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/workqueue.h> 19 #include <linux/interrupt.h> 20 #include <linux/kernel.h> 21 #include <sound/core.h> 22 #include <sound/pcm.h> 23 #include <sound/control.h> 24 #include <sound/ac97_codec.h> 25 26 /* 27 * Convenience kcontrol builders 28 */ 29 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \ 30 ((unsigned long)&(struct soc_mixer_control) \ 31 {.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \ 32 .invert = xinvert}) 33 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \ 34 ((unsigned long)&(struct soc_mixer_control) \ 35 {.reg = xreg, .max = xmax, .invert = xinvert}) 36 #define SOC_SINGLE(xname, reg, shift, max, invert) \ 37 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 38 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 39 .put = snd_soc_put_volsw, \ 40 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 41 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 42 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 43 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 44 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 45 .tlv.p = (tlv_array), \ 46 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 47 .put = snd_soc_put_volsw, \ 48 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 49 #define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \ 50 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 51 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 52 .put = snd_soc_put_volsw, \ 53 .private_value = (unsigned long)&(struct soc_mixer_control) \ 54 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \ 55 .max = xmax, .invert = xinvert} } 56 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \ 57 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 58 .info = snd_soc_info_volsw_2r, \ 59 .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \ 60 .private_value = (unsigned long)&(struct soc_mixer_control) \ 61 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \ 62 .max = xmax, .invert = xinvert} } 63 #define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \ 64 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 65 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 66 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 67 .tlv.p = (tlv_array), \ 68 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 69 .put = snd_soc_put_volsw, \ 70 .private_value = (unsigned long)&(struct soc_mixer_control) \ 71 {.reg = xreg, .shift = shift_left, .rshift = shift_right,\ 72 .max = xmax, .invert = xinvert} } 73 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \ 74 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 75 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 76 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 77 .tlv.p = (tlv_array), \ 78 .info = snd_soc_info_volsw_2r, \ 79 .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \ 80 .private_value = (unsigned long)&(struct soc_mixer_control) \ 81 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \ 82 .max = xmax, .invert = xinvert} } 83 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \ 84 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 85 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 86 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 87 .tlv.p = (tlv_array), \ 88 .info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \ 89 .put = snd_soc_put_volsw_s8, \ 90 .private_value = (unsigned long)&(struct soc_mixer_control) \ 91 {.reg = xreg, .min = xmin, .max = xmax} } 92 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \ 93 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 94 .max = xmax, .texts = xtexts } 95 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \ 96 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts) 97 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \ 98 { .max = xmax, .texts = xtexts } 99 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \ 100 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 101 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues} 102 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \ 103 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues) 104 #define SOC_ENUM(xname, xenum) \ 105 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 106 .info = snd_soc_info_enum_double, \ 107 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \ 108 .private_value = (unsigned long)&xenum } 109 #define SOC_VALUE_ENUM(xname, xenum) \ 110 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 111 .info = snd_soc_info_enum_double, \ 112 .get = snd_soc_get_value_enum_double, \ 113 .put = snd_soc_put_value_enum_double, \ 114 .private_value = (unsigned long)&xenum } 115 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\ 116 xhandler_get, xhandler_put) \ 117 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 118 .info = snd_soc_info_volsw, \ 119 .get = xhandler_get, .put = xhandler_put, \ 120 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 121 #define SOC_DOUBLE_EXT(xname, xreg, shift_left, shift_right, xmax, xinvert,\ 122 xhandler_get, xhandler_put) \ 123 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 124 .info = snd_soc_info_volsw, \ 125 .get = xhandler_get, .put = xhandler_put, \ 126 .private_value = (unsigned long)&(struct soc_mixer_control) \ 127 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \ 128 .max = xmax, .invert = xinvert} } 129 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\ 130 xhandler_get, xhandler_put, tlv_array) \ 131 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 132 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 133 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 134 .tlv.p = (tlv_array), \ 135 .info = snd_soc_info_volsw, \ 136 .get = xhandler_get, .put = xhandler_put, \ 137 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 138 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\ 139 xhandler_get, xhandler_put, 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, \ 145 .get = xhandler_get, .put = xhandler_put, \ 146 .private_value = (unsigned long)&(struct soc_mixer_control) \ 147 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \ 148 .max = xmax, .invert = xinvert} } 149 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\ 150 xhandler_get, xhandler_put, tlv_array) \ 151 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 152 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 153 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 154 .tlv.p = (tlv_array), \ 155 .info = snd_soc_info_volsw_2r, \ 156 .get = xhandler_get, .put = xhandler_put, \ 157 .private_value = (unsigned long)&(struct soc_mixer_control) \ 158 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \ 159 .max = xmax, .invert = xinvert} } 160 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \ 161 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 162 .info = snd_soc_info_bool_ext, \ 163 .get = xhandler_get, .put = xhandler_put, \ 164 .private_value = xdata } 165 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \ 166 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 167 .info = snd_soc_info_enum_ext, \ 168 .get = xhandler_get, .put = xhandler_put, \ 169 .private_value = (unsigned long)&xenum } 170 171 /* 172 * Simplified versions of above macros, declaring a struct and calculating 173 * ARRAY_SIZE internally 174 */ 175 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \ 176 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \ 177 ARRAY_SIZE(xtexts), xtexts) 178 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \ 179 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts) 180 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \ 181 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts) 182 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \ 183 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \ 184 ARRAY_SIZE(xtexts), xtexts, xvalues) 185 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \ 186 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues) 187 188 /* 189 * Bias levels 190 * 191 * @ON: Bias is fully on for audio playback and capture operations. 192 * @PREPARE: Prepare for audio operations. Called before DAPM switching for 193 * stream start and stop operations. 194 * @STANDBY: Low power standby state when no playback/capture operations are 195 * in progress. NOTE: The transition time between STANDBY and ON 196 * should be as fast as possible and no longer than 10ms. 197 * @OFF: Power Off. No restrictions on transition times. 198 */ 199 enum snd_soc_bias_level { 200 SND_SOC_BIAS_ON, 201 SND_SOC_BIAS_PREPARE, 202 SND_SOC_BIAS_STANDBY, 203 SND_SOC_BIAS_OFF, 204 }; 205 206 struct snd_jack; 207 struct snd_soc_card; 208 struct snd_soc_device; 209 struct snd_soc_pcm_stream; 210 struct snd_soc_ops; 211 struct snd_soc_dai_mode; 212 struct snd_soc_pcm_runtime; 213 struct snd_soc_dai; 214 struct snd_soc_platform; 215 struct snd_soc_codec; 216 struct soc_enum; 217 struct snd_soc_ac97_ops; 218 struct snd_soc_jack; 219 struct snd_soc_jack_pin; 220 #ifdef CONFIG_GPIOLIB 221 struct snd_soc_jack_gpio; 222 #endif 223 224 typedef int (*hw_write_t)(void *,const char* ,int); 225 226 extern struct snd_ac97_bus_ops soc_ac97_ops; 227 228 enum snd_soc_control_type { 229 SND_SOC_CUSTOM, 230 SND_SOC_I2C, 231 SND_SOC_SPI, 232 }; 233 234 int snd_soc_register_platform(struct snd_soc_platform *platform); 235 void snd_soc_unregister_platform(struct snd_soc_platform *platform); 236 int snd_soc_register_codec(struct snd_soc_codec *codec); 237 void snd_soc_unregister_codec(struct snd_soc_codec *codec); 238 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg); 239 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, 240 int addr_bits, int data_bits, 241 enum snd_soc_control_type control); 242 243 /* pcm <-> DAI connect */ 244 void snd_soc_free_pcms(struct snd_soc_device *socdev); 245 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid); 246 247 /* Utility functions to get clock rates from various things */ 248 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots); 249 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params); 250 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots); 251 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms); 252 253 /* set runtime hw params */ 254 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, 255 const struct snd_pcm_hardware *hw); 256 257 /* Jack reporting */ 258 int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type, 259 struct snd_soc_jack *jack); 260 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask); 261 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, 262 struct snd_soc_jack_pin *pins); 263 #ifdef CONFIG_GPIOLIB 264 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, 265 struct snd_soc_jack_gpio *gpios); 266 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, 267 struct snd_soc_jack_gpio *gpios); 268 #endif 269 270 /* codec register bit access */ 271 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, 272 unsigned int mask, unsigned int value); 273 int snd_soc_update_bits_locked(struct snd_soc_codec *codec, 274 unsigned short reg, unsigned int mask, 275 unsigned int value); 276 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, 277 unsigned int mask, unsigned int value); 278 279 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, 280 struct snd_ac97_bus_ops *ops, int num); 281 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec); 282 283 /* 284 *Controls 285 */ 286 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, 287 void *data, char *long_name); 288 int snd_soc_add_controls(struct snd_soc_codec *codec, 289 const struct snd_kcontrol_new *controls, int num_controls); 290 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, 291 struct snd_ctl_elem_info *uinfo); 292 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, 293 struct snd_ctl_elem_info *uinfo); 294 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, 295 struct snd_ctl_elem_value *ucontrol); 296 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, 297 struct snd_ctl_elem_value *ucontrol); 298 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, 299 struct snd_ctl_elem_value *ucontrol); 300 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, 301 struct snd_ctl_elem_value *ucontrol); 302 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, 303 struct snd_ctl_elem_info *uinfo); 304 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, 305 struct snd_ctl_elem_info *uinfo); 306 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info 307 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, 308 struct snd_ctl_elem_value *ucontrol); 309 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, 310 struct snd_ctl_elem_value *ucontrol); 311 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, 312 struct snd_ctl_elem_info *uinfo); 313 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, 314 struct snd_ctl_elem_value *ucontrol); 315 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, 316 struct snd_ctl_elem_value *ucontrol); 317 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, 318 struct snd_ctl_elem_info *uinfo); 319 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, 320 struct snd_ctl_elem_value *ucontrol); 321 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, 322 struct snd_ctl_elem_value *ucontrol); 323 324 /** 325 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection 326 * 327 * @pin: name of the pin to update 328 * @mask: bits to check for in reported jack status 329 * @invert: if non-zero then pin is enabled when status is not reported 330 */ 331 struct snd_soc_jack_pin { 332 struct list_head list; 333 const char *pin; 334 int mask; 335 bool invert; 336 }; 337 338 /** 339 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection 340 * 341 * @gpio: gpio number 342 * @name: gpio name 343 * @report: value to report when jack detected 344 * @invert: report presence in low state 345 * @debouce_time: debouce time in ms 346 */ 347 #ifdef CONFIG_GPIOLIB 348 struct snd_soc_jack_gpio { 349 unsigned int gpio; 350 const char *name; 351 int report; 352 int invert; 353 int debounce_time; 354 struct snd_soc_jack *jack; 355 struct work_struct work; 356 357 int (*jack_status_check)(void); 358 }; 359 #endif 360 361 struct snd_soc_jack { 362 struct snd_jack *jack; 363 struct snd_soc_card *card; 364 struct list_head pins; 365 int status; 366 }; 367 368 /* SoC PCM stream information */ 369 struct snd_soc_pcm_stream { 370 char *stream_name; 371 u64 formats; /* SNDRV_PCM_FMTBIT_* */ 372 unsigned int rates; /* SNDRV_PCM_RATE_* */ 373 unsigned int rate_min; /* min rate */ 374 unsigned int rate_max; /* max rate */ 375 unsigned int channels_min; /* min channels */ 376 unsigned int channels_max; /* max channels */ 377 unsigned int active:1; /* stream is in use */ 378 void *dma_data; /* used by platform code */ 379 }; 380 381 /* SoC audio ops */ 382 struct snd_soc_ops { 383 int (*startup)(struct snd_pcm_substream *); 384 void (*shutdown)(struct snd_pcm_substream *); 385 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *); 386 int (*hw_free)(struct snd_pcm_substream *); 387 int (*prepare)(struct snd_pcm_substream *); 388 int (*trigger)(struct snd_pcm_substream *, int); 389 }; 390 391 /* SoC Audio Codec */ 392 struct snd_soc_codec { 393 char *name; 394 struct module *owner; 395 struct mutex mutex; 396 struct device *dev; 397 struct snd_soc_device *socdev; 398 399 struct list_head list; 400 401 /* callbacks */ 402 int (*set_bias_level)(struct snd_soc_codec *, 403 enum snd_soc_bias_level level); 404 405 /* runtime */ 406 struct snd_card *card; 407 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */ 408 unsigned int active; 409 unsigned int pcm_devs; 410 void *private_data; 411 412 /* codec IO */ 413 void *control_data; /* codec control (i2c/3wire) data */ 414 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 415 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 416 int (*display_register)(struct snd_soc_codec *, char *, 417 size_t, unsigned int); 418 int (*volatile_register)(unsigned int); 419 int (*readable_register)(unsigned int); 420 hw_write_t hw_write; 421 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int); 422 void *reg_cache; 423 short reg_cache_size; 424 short reg_cache_step; 425 426 unsigned int idle_bias_off:1; /* Use BIAS_OFF instead of STANDBY */ 427 unsigned int cache_only:1; /* Suppress writes to hardware */ 428 unsigned int cache_sync:1; /* Cache needs to be synced to hardware */ 429 430 /* dapm */ 431 u32 pop_time; 432 struct list_head dapm_widgets; 433 struct list_head dapm_paths; 434 enum snd_soc_bias_level bias_level; 435 enum snd_soc_bias_level suspend_bias_level; 436 struct delayed_work delayed_work; 437 438 /* codec DAI's */ 439 struct snd_soc_dai *dai; 440 unsigned int num_dai; 441 442 #ifdef CONFIG_DEBUG_FS 443 struct dentry *debugfs_codec_root; 444 struct dentry *debugfs_reg; 445 struct dentry *debugfs_pop_time; 446 struct dentry *debugfs_dapm; 447 #endif 448 }; 449 450 /* codec device */ 451 struct snd_soc_codec_device { 452 int (*probe)(struct platform_device *pdev); 453 int (*remove)(struct platform_device *pdev); 454 int (*suspend)(struct platform_device *pdev, pm_message_t state); 455 int (*resume)(struct platform_device *pdev); 456 }; 457 458 /* SoC platform interface */ 459 struct snd_soc_platform { 460 char *name; 461 struct list_head list; 462 463 int (*probe)(struct platform_device *pdev); 464 int (*remove)(struct platform_device *pdev); 465 int (*suspend)(struct snd_soc_dai *dai); 466 int (*resume)(struct snd_soc_dai *dai); 467 468 /* pcm creation and destruction */ 469 int (*pcm_new)(struct snd_card *, struct snd_soc_dai *, 470 struct snd_pcm *); 471 void (*pcm_free)(struct snd_pcm *); 472 473 /* platform stream ops */ 474 struct snd_pcm_ops *pcm_ops; 475 }; 476 477 /* SoC machine DAI configuration, glues a codec and cpu DAI together */ 478 struct snd_soc_dai_link { 479 char *name; /* Codec name */ 480 char *stream_name; /* Stream name */ 481 482 /* DAI */ 483 struct snd_soc_dai *codec_dai; 484 struct snd_soc_dai *cpu_dai; 485 486 /* machine stream operations */ 487 struct snd_soc_ops *ops; 488 489 /* codec/machine specific init - e.g. add machine controls */ 490 int (*init)(struct snd_soc_codec *codec); 491 492 /* Symmetry requirements */ 493 unsigned int symmetric_rates:1; 494 495 /* Symmetry data - only valid if symmetry is being enforced */ 496 unsigned int rate; 497 498 /* DAI pcm */ 499 struct snd_pcm *pcm; 500 }; 501 502 /* SoC card */ 503 struct snd_soc_card { 504 char *name; 505 struct device *dev; 506 507 struct list_head list; 508 509 int instantiated; 510 511 int (*probe)(struct platform_device *pdev); 512 int (*remove)(struct platform_device *pdev); 513 514 /* the pre and post PM functions are used to do any PM work before and 515 * after the codec and DAI's do any PM work. */ 516 int (*suspend_pre)(struct platform_device *pdev, pm_message_t state); 517 int (*suspend_post)(struct platform_device *pdev, pm_message_t state); 518 int (*resume_pre)(struct platform_device *pdev); 519 int (*resume_post)(struct platform_device *pdev); 520 521 /* callbacks */ 522 int (*set_bias_level)(struct snd_soc_card *, 523 enum snd_soc_bias_level level); 524 525 long pmdown_time; 526 527 /* CPU <--> Codec DAI links */ 528 struct snd_soc_dai_link *dai_link; 529 int num_links; 530 531 struct snd_soc_device *socdev; 532 533 struct snd_soc_codec *codec; 534 535 struct snd_soc_platform *platform; 536 struct delayed_work delayed_work; 537 struct work_struct deferred_resume_work; 538 }; 539 540 /* SoC Device - the audio subsystem */ 541 struct snd_soc_device { 542 struct device *dev; 543 struct snd_soc_card *card; 544 struct snd_soc_codec_device *codec_dev; 545 void *codec_data; 546 }; 547 548 /* runtime channel data */ 549 struct snd_soc_pcm_runtime { 550 struct snd_soc_dai_link *dai; 551 struct snd_soc_device *socdev; 552 }; 553 554 /* mixer control */ 555 struct soc_mixer_control { 556 int min, max; 557 unsigned int reg, rreg, shift, rshift, invert; 558 }; 559 560 /* enumerated kcontrol */ 561 struct soc_enum { 562 unsigned short reg; 563 unsigned short reg2; 564 unsigned char shift_l; 565 unsigned char shift_r; 566 unsigned int max; 567 unsigned int mask; 568 const char **texts; 569 const unsigned int *values; 570 void *dapm; 571 }; 572 573 /* codec IO */ 574 static inline unsigned int snd_soc_read(struct snd_soc_codec *codec, 575 unsigned int reg) 576 { 577 return codec->read(codec, reg); 578 } 579 580 static inline unsigned int snd_soc_write(struct snd_soc_codec *codec, 581 unsigned int reg, unsigned int val) 582 { 583 return codec->write(codec, reg, val); 584 } 585 586 #include <sound/soc-dai.h> 587 588 #endif 589