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/workqueue.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/control.h>
  22 #include <sound/ac97_codec.h>
  23
  24 #define SND_SOC_VERSION "0.13.2"
  25
  26 /*
  27  * Convenience kcontrol builders
  28  */
  29 #define SOC_SINGLE_VALUE(reg, shift, max, invert) ((reg) | ((shift) << 8) |\
  30         ((shift) << 12) | ((max) << 16) | ((invert) << 24))
  31 #define SOC_SINGLE_VALUE_EXT(reg, max, invert) ((reg) | ((max) << 16) |\
  32         ((invert) << 31))
  33 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  34 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  35         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  36         .put = snd_soc_put_volsw, \
  37         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  38 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  39 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  40         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  41                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  42         .tlv.p = (tlv_array), \
  43         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  44         .put = snd_soc_put_volsw, \
  45         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  46 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
  47 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  48         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  49         .put = snd_soc_put_volsw, \
  50         .private_value = (reg) | ((shift_left) << 8) | \
  51                 ((shift_right) << 12) | ((max) << 16) | ((invert) << 24) }
  52 #define SOC_DOUBLE_R(xname, reg_left, reg_right, shift, max, invert) \
  53 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  54         .info = snd_soc_info_volsw_2r, \
  55         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  56         .private_value = (reg_left) | ((shift) << 8)  | \
  57                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
  58 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
  59 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  60         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  61                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  62         .tlv.p = (tlv_array), \
  63         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  64         .put = snd_soc_put_volsw, \
  65         .private_value = (reg) | ((shift_left) << 8) | \
  66                 ((shift_right) << 12) | ((max) << 16) | ((invert) << 24) }
  67 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
  68 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  69         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  70                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  71         .tlv.p = (tlv_array), \
  72         .info = snd_soc_info_volsw_2r, \
  73         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  74         .private_value = (reg_left) | ((shift) << 8)  | \
  75                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
  76 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
  77 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  78         .mask = xmask, .texts = xtexts }
  79 #define SOC_ENUM_SINGLE(xreg, xshift, xmask, xtexts) \
  80         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xtexts)
  81 #define SOC_ENUM_SINGLE_EXT(xmask, xtexts) \
  82 {       .mask = xmask, .texts = xtexts }
  83 #define SOC_ENUM(xname, xenum) \
  84 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
  85         .info = snd_soc_info_enum_double, \
  86         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
  87         .private_value = (unsigned long)&xenum }
  88 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmask, xinvert,\
  89          xhandler_get, xhandler_put) \
  90 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  91         .info = snd_soc_info_volsw, \
  92         .get = xhandler_get, .put = xhandler_put, \
  93         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmask, xinvert) }
  94 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
  95 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  96         .info = snd_soc_info_bool_ext, \
  97         .get = xhandler_get, .put = xhandler_put, \
  98         .private_value = xdata }
  99 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 100 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 101         .info = snd_soc_info_enum_ext, \
 102         .get = xhandler_get, .put = xhandler_put, \
 103         .private_value = (unsigned long)&xenum }
 104
 105 /*
 106  * Digital Audio Interface (DAI) types
 107  */
 108 #define SND_SOC_DAI_AC97        0x1
 109 #define SND_SOC_DAI_I2S         0x2
 110 #define SND_SOC_DAI_PCM         0x4
 111 #define SND_SOC_DAI_AC97_BUS    0x8     /* for custom i.e. non ac97_codec.c */
 112
 113 /*
 114  * DAI hardware audio formats
 115  */
 116 #define SND_SOC_DAIFMT_I2S              0       /* I2S mode */
 117 #define SND_SOC_DAIFMT_RIGHT_J  1       /* Right justified mode */
 118 #define SND_SOC_DAIFMT_LEFT_J   2       /* Left Justified mode */
 119 #define SND_SOC_DAIFMT_DSP_A    3       /* L data msb after FRM or LRC */
 120 #define SND_SOC_DAIFMT_DSP_B    4       /* L data msb during FRM or LRC */
 121 #define SND_SOC_DAIFMT_AC97             5       /* AC97 */
 122
 123 #define SND_SOC_DAIFMT_MSB      SND_SOC_DAIFMT_LEFT_J
 124 #define SND_SOC_DAIFMT_LSB      SND_SOC_DAIFMT_RIGHT_J
 125
 126 /*
 127  * DAI Gating
 128  */
 129 #define SND_SOC_DAIFMT_CONT                     (0 << 4)        /* continuous clock */
 130 #define SND_SOC_DAIFMT_GATED            (1 << 4)        /* clock is gated when not Tx/Rx */
 131
 132 /*
 133  * DAI Sync
 134  * Synchronous LR (Left Right) clocks and Frame signals.
 135  */
 136 #define SND_SOC_DAIFMT_SYNC             (0 << 5)        /* Tx FRM = Rx FRM */
 137 #define SND_SOC_DAIFMT_ASYNC            (1 << 5)        /* Tx FRM ~ Rx FRM */
 138
 139 /*
 140  * TDM
 141  */
 142 #define SND_SOC_DAIFMT_TDM              (1 << 6)
 143
 144 /*
 145  * DAI hardware signal inversions
 146  */
 147 #define SND_SOC_DAIFMT_NB_NF            (0 << 8)        /* normal bclk + frm */
 148 #define SND_SOC_DAIFMT_NB_IF            (1 << 8)        /* normal bclk + inv frm */
 149 #define SND_SOC_DAIFMT_IB_NF            (2 << 8)        /* invert bclk + nor frm */
 150 #define SND_SOC_DAIFMT_IB_IF            (3 << 8)        /* invert bclk + frm */
 151
 152 /*
 153  * DAI hardware clock masters
 154  * This is wrt the codec, the inverse is true for the interface
 155  * i.e. if the codec is clk and frm master then the interface is
 156  * clk and frame slave.
 157  */
 158 #define SND_SOC_DAIFMT_CBM_CFM  (0 << 12) /* codec clk & frm master */
 159 #define SND_SOC_DAIFMT_CBS_CFM  (1 << 12) /* codec clk slave & frm master */
 160 #define SND_SOC_DAIFMT_CBM_CFS  (2 << 12) /* codec clk master & frame slave */
 161 #define SND_SOC_DAIFMT_CBS_CFS  (3 << 12) /* codec clk & frm slave */
 162
 163 #define SND_SOC_DAIFMT_FORMAT_MASK              0x000f
 164 #define SND_SOC_DAIFMT_CLOCK_MASK               0x00f0
 165 #define SND_SOC_DAIFMT_INV_MASK                 0x0f00
 166 #define SND_SOC_DAIFMT_MASTER_MASK              0xf000
 167
 168
 169 /*
 170  * Master Clock Directions
 171  */
 172 #define SND_SOC_CLOCK_IN        0
 173 #define SND_SOC_CLOCK_OUT       1
 174
 175 /*
 176  * AC97 codec ID's bitmask
 177  */
 178 #define SND_SOC_DAI_AC97_ID0    (1 << 0)
 179 #define SND_SOC_DAI_AC97_ID1    (1 << 1)
 180 #define SND_SOC_DAI_AC97_ID2    (1 << 2)
 181 #define SND_SOC_DAI_AC97_ID3    (1 << 3)
 182
 183 struct snd_soc_device;
 184 struct snd_soc_pcm_stream;
 185 struct snd_soc_ops;
 186 struct snd_soc_dai_mode;
 187 struct snd_soc_pcm_runtime;
 188 struct snd_soc_codec_dai;
 189 struct snd_soc_cpu_dai;
 190 struct snd_soc_codec;
 191 struct snd_soc_machine_config;
 192 struct soc_enum;
 193 struct snd_soc_ac97_ops;
 194 struct snd_soc_clock_info;
 195
 196 typedef int (*hw_write_t)(void *,const char* ,int);
 197 typedef int (*hw_read_t)(void *,char* ,int);
 198
 199 extern struct snd_ac97_bus_ops soc_ac97_ops;
 200
 201 /* pcm <-> DAI connect */
 202 void snd_soc_free_pcms(struct snd_soc_device *socdev);
 203 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 204 int snd_soc_register_card(struct snd_soc_device *socdev);
 205
 206 /* set runtime hw params */
 207 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 208         const struct snd_pcm_hardware *hw);
 209
 210 /* codec IO */
 211 #define snd_soc_read(codec, reg) codec->read(codec, reg)
 212 #define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
 213
 214 /* codec register bit access */
 215 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 216                                 unsigned short mask, unsigned short value);
 217 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 218                                 unsigned short mask, unsigned short value);
 219
 220 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 221         struct snd_ac97_bus_ops *ops, int num);
 222 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 223
 224 /*
 225  *Controls
 226  */
 227 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 228         void *data, char *long_name);
 229 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 230         struct snd_ctl_elem_info *uinfo);
 231 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 232         struct snd_ctl_elem_info *uinfo);
 233 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 234         struct snd_ctl_elem_value *ucontrol);
 235 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 236         struct snd_ctl_elem_value *ucontrol);
 237 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 238         struct snd_ctl_elem_info *uinfo);
 239 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 240         struct snd_ctl_elem_info *uinfo);
 241 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono
 242 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 243         struct snd_ctl_elem_value *ucontrol);
 244 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 245         struct snd_ctl_elem_value *ucontrol);
 246 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 247         struct snd_ctl_elem_info *uinfo);
 248 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 249         struct snd_ctl_elem_value *ucontrol);
 250 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 251         struct snd_ctl_elem_value *ucontrol);
 252
 253 /* SoC PCM stream information */
 254 struct snd_soc_pcm_stream {
 255         char *stream_name;
 256         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 257         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 258         unsigned int rate_min;          /* min rate */
 259         unsigned int rate_max;          /* max rate */
 260         unsigned int channels_min;      /* min channels */
 261         unsigned int channels_max;      /* max channels */
 262         unsigned int active:1;          /* stream is in use */
 263 };
 264
 265 /* SoC audio ops */
 266 struct snd_soc_ops {
 267         int (*startup)(struct snd_pcm_substream *);
 268         void (*shutdown)(struct snd_pcm_substream *);
 269         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 270         int (*hw_free)(struct snd_pcm_substream *);
 271         int (*prepare)(struct snd_pcm_substream *);
 272         int (*trigger)(struct snd_pcm_substream *, int);
 273 };
 274
 275 /* ASoC codec DAI ops */
 276 struct snd_soc_codec_ops {
 277         /* codec DAI clocking configuration */
 278         int (*set_sysclk)(struct snd_soc_codec_dai *codec_dai,
 279                 int clk_id, unsigned int freq, int dir);
 280         int (*set_pll)(struct snd_soc_codec_dai *codec_dai,
 281                 int pll_id, unsigned int freq_in, unsigned int freq_out);
 282         int (*set_clkdiv)(struct snd_soc_codec_dai *codec_dai,
 283                 int div_id, int div);
 284
 285         /* CPU DAI format configuration */
 286         int (*set_fmt)(struct snd_soc_codec_dai *codec_dai,
 287                 unsigned int fmt);
 288         int (*set_tdm_slot)(struct snd_soc_codec_dai *codec_dai,
 289                 unsigned int mask, int slots);
 290         int (*set_tristate)(struct snd_soc_codec_dai *, int tristate);
 291
 292         /* digital mute */
 293         int (*digital_mute)(struct snd_soc_codec_dai *, int mute);
 294 };
 295
 296 /* ASoC cpu DAI ops */
 297 struct snd_soc_cpu_ops {
 298         /* CPU DAI clocking configuration */
 299         int (*set_sysclk)(struct snd_soc_cpu_dai *cpu_dai,
 300                 int clk_id, unsigned int freq, int dir);
 301         int (*set_clkdiv)(struct snd_soc_cpu_dai *cpu_dai,
 302                 int div_id, int div);
 303         int (*set_pll)(struct snd_soc_cpu_dai *cpu_dai,
 304                 int pll_id, unsigned int freq_in, unsigned int freq_out);
 305
 306         /* CPU DAI format configuration */
 307         int (*set_fmt)(struct snd_soc_cpu_dai *cpu_dai,
 308                 unsigned int fmt);
 309         int (*set_tdm_slot)(struct snd_soc_cpu_dai *cpu_dai,
 310                 unsigned int mask, int slots);
 311         int (*set_tristate)(struct snd_soc_cpu_dai *, int tristate);
 312 };
 313
 314 /* SoC Codec DAI */
 315 struct snd_soc_codec_dai {
 316         char *name;
 317         int id;
 318         unsigned char type;
 319
 320         /* DAI capabilities */
 321         struct snd_soc_pcm_stream playback;
 322         struct snd_soc_pcm_stream capture;
 323
 324         /* DAI runtime info */
 325         struct snd_soc_codec *codec;
 326         unsigned int active;
 327         unsigned char pop_wait:1;
 328
 329         /* ops */
 330         struct snd_soc_ops ops;
 331         struct snd_soc_codec_ops dai_ops;
 332
 333         /* DAI private data */
 334         void *private_data;
 335 };
 336
 337 /* SoC CPU DAI */
 338 struct snd_soc_cpu_dai {
 339
 340         /* DAI description */
 341         char *name;
 342         unsigned int id;
 343         unsigned char type;
 344
 345         /* DAI callbacks */
 346         int (*probe)(struct platform_device *pdev);
 347         void (*remove)(struct platform_device *pdev);
 348         int (*suspend)(struct platform_device *pdev,
 349                 struct snd_soc_cpu_dai *cpu_dai);
 350         int (*resume)(struct platform_device *pdev,
 351                 struct snd_soc_cpu_dai *cpu_dai);
 352
 353         /* ops */
 354         struct snd_soc_ops ops;
 355         struct snd_soc_cpu_ops dai_ops;
 356
 357         /* DAI capabilities */
 358         struct snd_soc_pcm_stream capture;
 359         struct snd_soc_pcm_stream playback;
 360
 361         /* DAI runtime info */
 362         struct snd_pcm_runtime *runtime;
 363         unsigned char active:1;
 364         void *dma_data;
 365
 366         /* DAI private data */
 367         void *private_data;
 368 };
 369
 370 /* SoC Audio Codec */
 371 struct snd_soc_codec {
 372         char *name;
 373         struct module *owner;
 374         struct mutex mutex;
 375
 376         /* callbacks */
 377         int (*dapm_event)(struct snd_soc_codec *codec, int event);
 378
 379         /* runtime */
 380         struct snd_card *card;
 381         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 382         unsigned int active;
 383         unsigned int pcm_devs;
 384         void *private_data;
 385
 386         /* codec IO */
 387         void *control_data; /* codec control (i2c/3wire) data */
 388         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 389         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 390         hw_write_t hw_write;
 391         hw_read_t hw_read;
 392         void *reg_cache;
 393         short reg_cache_size;
 394         short reg_cache_step;
 395
 396         /* dapm */
 397         struct list_head dapm_widgets;
 398         struct list_head dapm_paths;
 399         unsigned int dapm_state;
 400         unsigned int suspend_dapm_state;
 401         struct delayed_work delayed_work;
 402
 403         /* codec DAI's */
 404         struct snd_soc_codec_dai *dai;
 405         unsigned int num_dai;
 406 };
 407
 408 /* codec device */
 409 struct snd_soc_codec_device {
 410         int (*probe)(struct platform_device *pdev);
 411         int (*remove)(struct platform_device *pdev);
 412         int (*suspend)(struct platform_device *pdev, pm_message_t state);
 413         int (*resume)(struct platform_device *pdev);
 414 };
 415
 416 /* SoC platform interface */
 417 struct snd_soc_platform {
 418         char *name;
 419
 420         int (*probe)(struct platform_device *pdev);
 421         int (*remove)(struct platform_device *pdev);
 422         int (*suspend)(struct platform_device *pdev,
 423                 struct snd_soc_cpu_dai *cpu_dai);
 424         int (*resume)(struct platform_device *pdev,
 425                 struct snd_soc_cpu_dai *cpu_dai);
 426
 427         /* pcm creation and destruction */
 428         int (*pcm_new)(struct snd_card *, struct snd_soc_codec_dai *,
 429                 struct snd_pcm *);
 430         void (*pcm_free)(struct snd_pcm *);
 431
 432         /* platform stream ops */
 433         struct snd_pcm_ops *pcm_ops;
 434 };
 435
 436 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 437 struct snd_soc_dai_link  {
 438         char *name;                     /* Codec name */
 439         char *stream_name;              /* Stream name */
 440
 441         /* DAI */
 442         struct snd_soc_codec_dai *codec_dai;
 443         struct snd_soc_cpu_dai *cpu_dai;
 444
 445         /* machine stream operations */
 446         struct snd_soc_ops *ops;
 447
 448         /* codec/machine specific init - e.g. add machine controls */
 449         int (*init)(struct snd_soc_codec *codec);
 450
 451         /* DAI pcm */
 452         struct snd_pcm *pcm;
 453 };
 454
 455 /* SoC machine */
 456 struct snd_soc_machine {
 457         char *name;
 458
 459         int (*probe)(struct platform_device *pdev);
 460         int (*remove)(struct platform_device *pdev);
 461
 462         /* the pre and post PM functions are used to do any PM work before and
 463          * after the codec and DAI's do any PM work. */
 464         int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 465         int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 466         int (*resume_pre)(struct platform_device *pdev);
 467         int (*resume_post)(struct platform_device *pdev);
 468
 469         /* callbacks */
 470         int (*dapm_event)(struct snd_soc_machine *, int event);
 471
 472         /* CPU <--> Codec DAI links  */
 473         struct snd_soc_dai_link *dai_link;
 474         int num_links;
 475 };
 476
 477 /* SoC Device - the audio subsystem */
 478 struct snd_soc_device {
 479         struct device *dev;
 480         struct snd_soc_machine *machine;
 481         struct snd_soc_platform *platform;
 482         struct snd_soc_codec *codec;
 483         struct snd_soc_codec_device *codec_dev;
 484         struct delayed_work delayed_work;
 485         void *codec_data;
 486 };
 487
 488 /* runtime channel data */
 489 struct snd_soc_pcm_runtime {
 490         struct snd_soc_dai_link *dai;
 491         struct snd_soc_device *socdev;
 492 };
 493
 494 /* enumerated kcontrol */
 495 struct soc_enum {
 496         unsigned short reg;
 497         unsigned short reg2;
 498         unsigned char shift_l;
 499         unsigned char shift_r;
 500         unsigned int mask;
 501         const char **texts;
 502         void *dapm;
 503 };
 504
 505 #endif