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 <sound/driver.h> 20#include <sound/core.h> 21#include <sound/pcm.h> 22#include <sound/control.h> 23#include <sound/ac97_codec.h> 24 25#define SND_SOC_VERSION "0.13.1" 26 27/* 28 * Convenience kcontrol builders 29 */ 30#define SOC_SINGLE_VALUE(reg,shift,mask,invert) ((reg) | ((shift) << 8) |\ 31 ((shift) << 12) | ((mask) << 16) | ((invert) << 24)) 32#define SOC_SINGLE_VALUE_EXT(reg,mask,invert) ((reg) | ((mask) << 16) |\ 33 ((invert) << 31)) 34#define SOC_SINGLE(xname, reg, shift, mask, invert) \ 35{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 36 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 37 .put = snd_soc_put_volsw, \ 38 .private_value = SOC_SINGLE_VALUE(reg, shift, mask, invert) } 39#define SOC_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \ 40{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 41 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 42 .put = snd_soc_put_volsw, \ 43 .private_value = (reg) | ((shift_left) << 8) | \ 44 ((shift_right) << 12) | ((mask) << 16) | ((invert) << 24) } 45#define SOC_DOUBLE_R(xname, reg_left, reg_right, shift, mask, invert) \ 46{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 47 .info = snd_soc_info_volsw_2r, \ 48 .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \ 49 .private_value = (reg_left) | ((shift) << 8) | \ 50 ((mask) << 12) | ((invert) << 20) | ((reg_right) << 24) } 51#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \ 52{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 53 .mask = xmask, .texts = xtexts } 54#define SOC_ENUM_SINGLE(xreg, xshift, xmask, xtexts) \ 55 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xtexts) 56#define SOC_ENUM_SINGLE_EXT(xmask, xtexts) \ 57{ .mask = xmask, .texts = xtexts } 58#define SOC_ENUM(xname, xenum) \ 59{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 60 .info = snd_soc_info_enum_double, \ 61 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \ 62 .private_value = (unsigned long)&xenum } 63#define SOC_SINGLE_EXT(xname, xreg, xshift, xmask, xinvert,\ 64 xhandler_get, xhandler_put) \ 65{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 66 .info = snd_soc_info_volsw, \ 67 .get = xhandler_get, .put = xhandler_put, \ 68 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmask, xinvert) } 69#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \ 70{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 71 .info = snd_soc_info_bool_ext, \ 72 .get = xhandler_get, .put = xhandler_put, \ 73 .private_value = xdata } 74#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \ 75{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 76 .info = snd_soc_info_enum_ext, \ 77 .get = xhandler_get, .put = xhandler_put, \ 78 .private_value = (unsigned long)&xenum } 79 80/* 81 * Digital Audio Interface (DAI) types 82 */ 83#define SND_SOC_DAI_AC97 0x1 84#define SND_SOC_DAI_I2S 0x2 85#define SND_SOC_DAI_PCM 0x4 86#define SND_SOC_DAI_AC97_BUS 0x8 /* for custom i.e. non ac97_codec.c */ 87 88/* 89 * DAI hardware audio formats 90 */ 91#define SND_SOC_DAIFMT_I2S 0 /* I2S mode */ 92#define SND_SOC_DAIFMT_RIGHT_J 1 /* Right justified mode */ 93#define SND_SOC_DAIFMT_LEFT_J 2 /* Left Justified mode */ 94#define SND_SOC_DAIFMT_DSP_A 3 /* L data msb after FRM or LRC */ 95#define SND_SOC_DAIFMT_DSP_B 4 /* L data msb during FRM or LRC */ 96#define SND_SOC_DAIFMT_AC97 5 /* AC97 */ 97 98#define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J 99#define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J 100 101/* 102 * DAI Gating 103 */ 104#define SND_SOC_DAIFMT_CONT (0 << 4) /* continuous clock */ 105#define SND_SOC_DAIFMT_GATED (1 << 4) /* clock is gated when not Tx/Rx */ 106 107/* 108 * DAI hardware signal inversions 109 */ 110#define SND_SOC_DAIFMT_NB_NF (0 << 8) /* normal bit clock + frame */ 111#define SND_SOC_DAIFMT_NB_IF (1 << 8) /* normal bclk + inv frm */ 112#define SND_SOC_DAIFMT_IB_NF (2 << 8) /* invert bclk + nor frm */ 113#define SND_SOC_DAIFMT_IB_IF (3 << 8) /* invert bclk + frm */ 114 115/* 116 * DAI hardware clock masters 117 * This is wrt the codec, the inverse is true for the interface 118 * i.e. if the codec is clk and frm master then the interface is 119 * clk and frame slave. 120 */ 121#define SND_SOC_DAIFMT_CBM_CFM (0 << 12) /* codec clk & frm master */ 122#define SND_SOC_DAIFMT_CBS_CFM (1 << 12) /* codec clk slave & frm master */ 123#define SND_SOC_DAIFMT_CBM_CFS (2 << 12) /* codec clk master & frame slave */ 124#define SND_SOC_DAIFMT_CBS_CFS (3 << 12) /* codec clk & frm slave */ 125 126#define SND_SOC_DAIFMT_FORMAT_MASK 0x000f 127#define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 128#define SND_SOC_DAIFMT_INV_MASK 0x0f00 129#define SND_SOC_DAIFMT_MASTER_MASK 0xf000 130 131 132/* 133 * Master Clock Directions 134 */ 135#define SND_SOC_CLOCK_IN 0 136#define SND_SOC_CLOCK_OUT 1 137 138/* 139 * AC97 codec ID's bitmask 140 */ 141#define SND_SOC_DAI_AC97_ID0 (1 << 0) 142#define SND_SOC_DAI_AC97_ID1 (1 << 1) 143#define SND_SOC_DAI_AC97_ID2 (1 << 2) 144#define SND_SOC_DAI_AC97_ID3 (1 << 3) 145 146struct snd_soc_device; 147struct snd_soc_pcm_stream; 148struct snd_soc_ops; 149struct snd_soc_dai_mode; 150struct snd_soc_pcm_runtime; 151struct snd_soc_codec_dai; 152struct snd_soc_cpu_dai; 153struct snd_soc_codec; 154struct snd_soc_machine_config; 155struct soc_enum; 156struct snd_soc_ac97_ops; 157struct snd_soc_clock_info; 158 159typedef int (*hw_write_t)(void *,const char* ,int); 160typedef int (*hw_read_t)(void *,char* ,int); 161 162extern struct snd_ac97_bus_ops soc_ac97_ops; 163 164/* pcm <-> DAI connect */ 165void snd_soc_free_pcms(struct snd_soc_device *socdev); 166int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid); 167int snd_soc_register_card(struct snd_soc_device *socdev); 168 169/* set runtime hw params */ 170int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, 171 const struct snd_pcm_hardware *hw); 172 173/* codec IO */ 174#define snd_soc_read(codec, reg) codec->read(codec, reg) 175#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value) 176 177/* codec register bit access */ 178int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, 179 unsigned short mask, unsigned short value); 180int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, 181 unsigned short mask, unsigned short value); 182 183int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, 184 struct snd_ac97_bus_ops *ops, int num); 185void snd_soc_free_ac97_codec(struct snd_soc_codec *codec); 186 187/* 188 *Controls 189 */ 190struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, 191 void *data, char *long_name); 192int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, 193 struct snd_ctl_elem_info *uinfo); 194int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, 195 struct snd_ctl_elem_info *uinfo); 196int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, 197 struct snd_ctl_elem_value *ucontrol); 198int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, 199 struct snd_ctl_elem_value *ucontrol); 200int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, 201 struct snd_ctl_elem_info *uinfo); 202int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, 203 struct snd_ctl_elem_info *uinfo); 204#define snd_soc_info_bool_ext snd_ctl_boolean_mono 205int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, 206 struct snd_ctl_elem_value *ucontrol); 207int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, 208 struct snd_ctl_elem_value *ucontrol); 209int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, 210 struct snd_ctl_elem_info *uinfo); 211int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, 212 struct snd_ctl_elem_value *ucontrol); 213int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, 214 struct snd_ctl_elem_value *ucontrol); 215 216/* SoC PCM stream information */ 217struct snd_soc_pcm_stream { 218 char *stream_name; 219 u64 formats; /* SNDRV_PCM_FMTBIT_* */ 220 unsigned int rates; /* SNDRV_PCM_RATE_* */ 221 unsigned int rate_min; /* min rate */ 222 unsigned int rate_max; /* max rate */ 223 unsigned int channels_min; /* min channels */ 224 unsigned int channels_max; /* max channels */ 225 unsigned int active:1; /* stream is in use */ 226}; 227 228/* SoC audio ops */ 229struct snd_soc_ops { 230 int (*startup)(struct snd_pcm_substream *); 231 void (*shutdown)(struct snd_pcm_substream *); 232 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *); 233 int (*hw_free)(struct snd_pcm_substream *); 234 int (*prepare)(struct snd_pcm_substream *); 235 int (*trigger)(struct snd_pcm_substream *, int); 236}; 237 238/* ASoC codec DAI ops */ 239struct snd_soc_codec_ops { 240 /* codec DAI clocking configuration */ 241 int (*set_sysclk)(struct snd_soc_codec_dai *codec_dai, 242 int clk_id, unsigned int freq, int dir); 243 int (*set_pll)(struct snd_soc_codec_dai *codec_dai, 244 int pll_id, unsigned int freq_in, unsigned int freq_out); 245 int (*set_clkdiv)(struct snd_soc_codec_dai *codec_dai, 246 int div_id, int div); 247 248 /* CPU DAI format configuration */ 249 int (*set_fmt)(struct snd_soc_codec_dai *codec_dai, 250 unsigned int fmt); 251 int (*set_tdm_slot)(struct snd_soc_codec_dai *codec_dai, 252 unsigned int mask, int slots); 253 int (*set_tristate)(struct snd_soc_codec_dai *, int tristate); 254 255 /* digital mute */ 256 int (*digital_mute)(struct snd_soc_codec_dai *, int mute); 257}; 258 259/* ASoC cpu DAI ops */ 260struct snd_soc_cpu_ops { 261 /* CPU DAI clocking configuration */ 262 int (*set_sysclk)(struct snd_soc_cpu_dai *cpu_dai, 263 int clk_id, unsigned int freq, int dir); 264 int (*set_clkdiv)(struct snd_soc_cpu_dai *cpu_dai, 265 int div_id, int div); 266 int (*set_pll)(struct snd_soc_cpu_dai *cpu_dai, 267 int pll_id, unsigned int freq_in, unsigned int freq_out); 268 269 /* CPU DAI format configuration */ 270 int (*set_fmt)(struct snd_soc_cpu_dai *cpu_dai, 271 unsigned int fmt); 272 int (*set_tdm_slot)(struct snd_soc_cpu_dai *cpu_dai, 273 unsigned int mask, int slots); 274 int (*set_tristate)(struct snd_soc_cpu_dai *, int tristate); 275}; 276 277/* SoC Codec DAI */ 278struct snd_soc_codec_dai { 279 char *name; 280 int id; 281 unsigned char type; 282 283 /* DAI capabilities */ 284 struct snd_soc_pcm_stream playback; 285 struct snd_soc_pcm_stream capture; 286 287 /* DAI runtime info */ 288 struct snd_soc_codec *codec; 289 unsigned int active; 290 unsigned char pop_wait:1; 291 292 /* ops */ 293 struct snd_soc_ops ops; 294 struct snd_soc_codec_ops dai_ops; 295 296 /* DAI private data */ 297 void *private_data; 298}; 299 300/* SoC CPU DAI */ 301struct snd_soc_cpu_dai { 302 303 /* DAI description */ 304 char *name; 305 unsigned int id; 306 unsigned char type; 307 308 /* DAI callbacks */ 309 int (*probe)(struct platform_device *pdev); 310 void (*remove)(struct platform_device *pdev); 311 int (*suspend)(struct platform_device *pdev, 312 struct snd_soc_cpu_dai *cpu_dai); 313 int (*resume)(struct platform_device *pdev, 314 struct snd_soc_cpu_dai *cpu_dai); 315 316 /* ops */ 317 struct snd_soc_ops ops; 318 struct snd_soc_cpu_ops dai_ops; 319 320 /* DAI capabilities */ 321 struct snd_soc_pcm_stream capture; 322 struct snd_soc_pcm_stream playback; 323 324 /* DAI runtime info */ 325 struct snd_pcm_runtime *runtime; 326 unsigned char active:1; 327 void *dma_data; 328 329 /* DAI private data */ 330 void *private_data; 331}; 332 333/* SoC Audio Codec */ 334struct snd_soc_codec { 335 char *name; 336 struct module *owner; 337 struct mutex mutex; 338 339 /* callbacks */ 340 int (*dapm_event)(struct snd_soc_codec *codec, int event); 341 342 /* runtime */ 343 struct snd_card *card; 344 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */ 345 unsigned int active; 346 unsigned int pcm_devs; 347 void *private_data; 348 349 /* codec IO */ 350 void *control_data; /* codec control (i2c/3wire) data */ 351 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 352 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 353 hw_write_t hw_write; 354 hw_read_t hw_read; 355 void *reg_cache; 356 short reg_cache_size; 357 short reg_cache_step; 358 359 /* dapm */ 360 struct list_head dapm_widgets; 361 struct list_head dapm_paths; 362 unsigned int dapm_state; 363 unsigned int suspend_dapm_state; 364 struct delayed_work delayed_work; 365 366 /* codec DAI's */ 367 struct snd_soc_codec_dai *dai; 368 unsigned int num_dai; 369}; 370 371/* codec device */ 372struct snd_soc_codec_device { 373 int (*probe)(struct platform_device *pdev); 374 int (*remove)(struct platform_device *pdev); 375 int (*suspend)(struct platform_device *pdev, pm_message_t state); 376 int (*resume)(struct platform_device *pdev); 377}; 378 379/* SoC platform interface */ 380struct snd_soc_platform { 381 char *name; 382 383 int (*probe)(struct platform_device *pdev); 384 int (*remove)(struct platform_device *pdev); 385 int (*suspend)(struct platform_device *pdev, 386 struct snd_soc_cpu_dai *cpu_dai); 387 int (*resume)(struct platform_device *pdev, 388 struct snd_soc_cpu_dai *cpu_dai); 389 390 /* pcm creation and destruction */ 391 int (*pcm_new)(struct snd_card *, struct snd_soc_codec_dai *, 392 struct snd_pcm *); 393 void (*pcm_free)(struct snd_pcm *); 394 395 /* platform stream ops */ 396 struct snd_pcm_ops *pcm_ops; 397}; 398 399/* SoC machine DAI configuration, glues a codec and cpu DAI together */ 400struct snd_soc_dai_link { 401 char *name; /* Codec name */ 402 char *stream_name; /* Stream name */ 403 404 /* DAI */ 405 struct snd_soc_codec_dai *codec_dai; 406 struct snd_soc_cpu_dai *cpu_dai; 407 408 /* machine stream operations */ 409 struct snd_soc_ops *ops; 410 411 /* codec/machine specific init - e.g. add machine controls */ 412 int (*init)(struct snd_soc_codec *codec); 413}; 414 415/* SoC machine */ 416struct snd_soc_machine { 417 char *name; 418 419 int (*probe)(struct platform_device *pdev); 420 int (*remove)(struct platform_device *pdev); 421 422 /* the pre and post PM functions are used to do any PM work before and 423 * after the codec and DAI's do any PM work. */ 424 int (*suspend_pre)(struct platform_device *pdev, pm_message_t state); 425 int (*suspend_post)(struct platform_device *pdev, pm_message_t state); 426 int (*resume_pre)(struct platform_device *pdev); 427 int (*resume_post)(struct platform_device *pdev); 428 429 /* CPU <--> Codec DAI links */ 430 struct snd_soc_dai_link *dai_link; 431 int num_links; 432}; 433 434/* SoC Device - the audio subsystem */ 435struct snd_soc_device { 436 struct device *dev; 437 struct snd_soc_machine *machine; 438 struct snd_soc_platform *platform; 439 struct snd_soc_codec *codec; 440 struct snd_soc_codec_device *codec_dev; 441 struct delayed_work delayed_work; 442 void *codec_data; 443}; 444 445/* runtime channel data */ 446struct snd_soc_pcm_runtime { 447 struct snd_soc_dai_link *dai; 448 struct snd_soc_device *socdev; 449}; 450 451/* enumerated kcontrol */ 452struct soc_enum { 453 unsigned short reg; 454 unsigned short reg2; 455 unsigned char shift_l; 456 unsigned char shift_r; 457 unsigned int mask; 458 const char **texts; 459 void *dapm; 460}; 461 462#endif 463