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/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 "0.13.0"
  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
  87 /*
  88  * DAI hardware audio formats
  89  */
  90 #define SND_SOC_DAIFMT_I2S              0       /* I2S mode */
  91 #define SND_SOC_DAIFMT_RIGHT_J  1       /* Right justified mode */
  92 #define SND_SOC_DAIFMT_LEFT_J   2       /* Left Justified mode */
  93 #define SND_SOC_DAIFMT_DSP_A    3       /* L data msb after FRM or LRC */
  94 #define SND_SOC_DAIFMT_DSP_B    4       /* L data msb during FRM or LRC */
  95 #define SND_SOC_DAIFMT_AC97             5       /* AC97 */
  96
  97 #define SND_SOC_DAIFMT_MSB      SND_SOC_DAIFMT_LEFT_J
  98 #define SND_SOC_DAIFMT_LSB      SND_SOC_DAIFMT_RIGHT_J
  99
 100 /*
 101  * DAI Gating
 102  */
 103 #define SND_SOC_DAIFMT_CONT                     (0 << 4)        /* continuous clock */
 104 #define SND_SOC_DAIFMT_GATED            (1 << 4)        /* clock is gated when not Tx/Rx */
 105
 106 /*
 107  * DAI hardware signal inversions
 108  */
 109 #define SND_SOC_DAIFMT_NB_NF            (0 << 8)        /* normal bit clock + frame */
 110 #define SND_SOC_DAIFMT_NB_IF            (1 << 8)        /* normal bclk + inv frm */
 111 #define SND_SOC_DAIFMT_IB_NF            (2 << 8)        /* invert bclk + nor frm */
 112 #define SND_SOC_DAIFMT_IB_IF            (3 << 8)        /* invert bclk + frm */
 113
 114 /*
 115  * DAI hardware clock masters
 116  * This is wrt the codec, the inverse is true for the interface
 117  * i.e. if the codec is clk and frm master then the interface is
 118  * clk and frame slave.
 119  */
 120 #define SND_SOC_DAIFMT_CBM_CFM  (0 << 12) /* codec clk & frm master */
 121 #define SND_SOC_DAIFMT_CBS_CFM  (1 << 12) /* codec clk slave & frm master */
 122 #define SND_SOC_DAIFMT_CBM_CFS  (2 << 12) /* codec clk master & frame slave */
 123 #define SND_SOC_DAIFMT_CBS_CFS  (3 << 12) /* codec clk & frm slave */
 124
 125 #define SND_SOC_DAIFMT_FORMAT_MASK              0x000f
 126 #define SND_SOC_DAIFMT_CLOCK_MASK               0x00f0
 127 #define SND_SOC_DAIFMT_INV_MASK                 0x0f00
 128 #define SND_SOC_DAIFMT_MASTER_MASK              0xf000
 129
 130
 131 /*
 132  * Master Clock Directions
 133  */
 134 #define SND_SOC_CLOCK_IN        0
 135 #define SND_SOC_CLOCK_OUT       1
 136
 137 /*
 138  * AC97 codec ID's bitmask
 139  */
 140 #define SND_SOC_DAI_AC97_ID0    (1 << 0)
 141 #define SND_SOC_DAI_AC97_ID1    (1 << 1)
 142 #define SND_SOC_DAI_AC97_ID2    (1 << 2)
 143 #define SND_SOC_DAI_AC97_ID3    (1 << 3)
 144
 145 struct snd_soc_device;
 146 struct snd_soc_pcm_stream;
 147 struct snd_soc_ops;
 148 struct snd_soc_dai_mode;
 149 struct snd_soc_pcm_runtime;
 150 struct snd_soc_codec_dai;
 151 struct snd_soc_cpu_dai;
 152 struct snd_soc_codec;
 153 struct snd_soc_machine_config;
 154 struct soc_enum;
 155 struct snd_soc_ac97_ops;
 156 struct snd_soc_clock_info;
 157
 158 typedef int (*hw_write_t)(void *,const char* ,int);
 159 typedef int (*hw_read_t)(void *,char* ,int);
 160
 161 extern struct snd_ac97_bus_ops soc_ac97_ops;
 162
 163 /* pcm <-> DAI connect */
 164 void snd_soc_free_pcms(struct snd_soc_device *socdev);
 165 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 166 int snd_soc_register_card(struct snd_soc_device *socdev);
 167
 168 /* set runtime hw params */
 169 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 170         const struct snd_pcm_hardware *hw);
 171
 172 /* codec IO */
 173 #define snd_soc_read(codec, reg) codec->read(codec, reg)
 174 #define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
 175
 176 /* codec register bit access */
 177 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 178                                 unsigned short mask, unsigned short value);
 179 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 180                                 unsigned short mask, unsigned short value);
 181
 182 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 183         struct snd_ac97_bus_ops *ops, int num);
 184 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 185
 186 /*
 187  *Controls
 188  */
 189 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 190         void *data, char *long_name);
 191 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 192         struct snd_ctl_elem_info *uinfo);
 193 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 194         struct snd_ctl_elem_info *uinfo);
 195 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 196         struct snd_ctl_elem_value *ucontrol);
 197 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 198         struct snd_ctl_elem_value *ucontrol);
 199 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 200         struct snd_ctl_elem_info *uinfo);
 201 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 202         struct snd_ctl_elem_info *uinfo);
 203 int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol,
 204         struct snd_ctl_elem_info *uinfo);
 205 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 206         struct snd_ctl_elem_value *ucontrol);
 207 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 208         struct snd_ctl_elem_value *ucontrol);
 209 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 210         struct snd_ctl_elem_info *uinfo);
 211 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 212         struct snd_ctl_elem_value *ucontrol);
 213 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 214         struct snd_ctl_elem_value *ucontrol);
 215
 216 /* SoC PCM stream information */
 217 struct 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 */
 229 struct 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 */
 239 struct 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 */
 260 struct 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 */
 278 struct snd_soc_codec_dai {
 279         char *name;
 280         int id;
 281
 282         /* DAI capabilities */
 283         struct snd_soc_pcm_stream playback;
 284         struct snd_soc_pcm_stream capture;
 285
 286         /* DAI runtime info */
 287         struct snd_soc_codec *codec;
 288         unsigned int active;
 289         unsigned char pop_wait:1;
 290
 291         /* ops */
 292         struct snd_soc_ops ops;
 293         struct snd_soc_codec_ops dai_ops;
 294
 295         /* DAI private data */
 296         void *private_data;
 297 };
 298
 299 /* SoC CPU DAI */
 300 struct snd_soc_cpu_dai {
 301
 302         /* DAI description */
 303         char *name;
 304         unsigned int id;
 305         unsigned char type;
 306
 307         /* DAI callbacks */
 308         int (*probe)(struct platform_device *pdev);
 309         void (*remove)(struct platform_device *pdev);
 310         int (*suspend)(struct platform_device *pdev,
 311                 struct snd_soc_cpu_dai *cpu_dai);
 312         int (*resume)(struct platform_device *pdev,
 313                 struct snd_soc_cpu_dai *cpu_dai);
 314
 315         /* ops */
 316         struct snd_soc_ops ops;
 317         struct snd_soc_cpu_ops dai_ops;
 318
 319         /* DAI capabilities */
 320         struct snd_soc_pcm_stream capture;
 321         struct snd_soc_pcm_stream playback;
 322
 323         /* DAI runtime info */
 324         struct snd_pcm_runtime *runtime;
 325         unsigned char active:1;
 326         void *dma_data;
 327
 328         /* DAI private data */
 329         void *private_data;
 330 };
 331
 332 /* SoC Audio Codec */
 333 struct snd_soc_codec {
 334         char *name;
 335         struct module *owner;
 336         struct mutex mutex;
 337
 338         /* callbacks */
 339         int (*dapm_event)(struct snd_soc_codec *codec, int event);
 340
 341         /* runtime */
 342         struct snd_card *card;
 343         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 344         unsigned int active;
 345         unsigned int pcm_devs;
 346         void *private_data;
 347
 348         /* codec IO */
 349         void *control_data; /* codec control (i2c/3wire) data */
 350         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 351         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 352         hw_write_t hw_write;
 353         hw_read_t hw_read;
 354         void *reg_cache;
 355         short reg_cache_size;
 356         short reg_cache_step;
 357
 358         /* dapm */
 359         struct list_head dapm_widgets;
 360         struct list_head dapm_paths;
 361         unsigned int dapm_state;
 362         unsigned int suspend_dapm_state;
 363         struct delayed_work delayed_work;
 364
 365         /* codec DAI's */
 366         struct snd_soc_codec_dai *dai;
 367         unsigned int num_dai;
 368 };
 369
 370 /* codec device */
 371 struct snd_soc_codec_device {
 372         int (*probe)(struct platform_device *pdev);
 373         int (*remove)(struct platform_device *pdev);
 374         int (*suspend)(struct platform_device *pdev, pm_message_t state);
 375         int (*resume)(struct platform_device *pdev);
 376 };
 377
 378 /* SoC platform interface */
 379 struct snd_soc_platform {
 380         char *name;
 381
 382         int (*probe)(struct platform_device *pdev);
 383         int (*remove)(struct platform_device *pdev);
 384         int (*suspend)(struct platform_device *pdev,
 385                 struct snd_soc_cpu_dai *cpu_dai);
 386         int (*resume)(struct platform_device *pdev,
 387                 struct snd_soc_cpu_dai *cpu_dai);
 388
 389         /* pcm creation and destruction */
 390         int (*pcm_new)(struct snd_card *, struct snd_soc_codec_dai *,
 391                 struct snd_pcm *);
 392         void (*pcm_free)(struct snd_pcm *);
 393
 394         /* platform stream ops */
 395         struct snd_pcm_ops *pcm_ops;
 396 };
 397
 398 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 399 struct snd_soc_dai_link  {
 400         char *name;                     /* Codec name */
 401         char *stream_name;              /* Stream name */
 402
 403         /* DAI */
 404         struct snd_soc_codec_dai *codec_dai;
 405         struct snd_soc_cpu_dai *cpu_dai;
 406
 407         /* machine stream operations */
 408         struct snd_soc_ops *ops;
 409
 410         /* codec/machine specific init - e.g. add machine controls */
 411         int (*init)(struct snd_soc_codec *codec);
 412 };
 413
 414 /* SoC machine */
 415 struct snd_soc_machine {
 416         char *name;
 417
 418         int (*probe)(struct platform_device *pdev);
 419         int (*remove)(struct platform_device *pdev);
 420
 421         /* the pre and post PM functions are used to do any PM work before and
 422          * after the codec and DAI's do any PM work. */
 423         int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 424         int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 425         int (*resume_pre)(struct platform_device *pdev);
 426         int (*resume_post)(struct platform_device *pdev);
 427
 428         /* CPU <--> Codec DAI links  */
 429         struct snd_soc_dai_link *dai_link;
 430         int num_links;
 431 };
 432
 433 /* SoC Device - the audio subsystem */
 434 struct snd_soc_device {
 435         struct device *dev;
 436         struct snd_soc_machine *machine;
 437         struct snd_soc_platform *platform;
 438         struct snd_soc_codec *codec;
 439         struct snd_soc_codec_device *codec_dev;
 440         struct delayed_work delayed_work;
 441         void *codec_data;
 442 };
 443
 444 /* runtime channel data */
 445 struct snd_soc_pcm_runtime {
 446         struct snd_soc_dai_link *dai;
 447         struct snd_soc_device *socdev;
 448 };
 449
 450 /* enumerated kcontrol */
 451 struct soc_enum {
 452         unsigned short reg;
 453         unsigned short reg2;
 454         unsigned char shift_l;
 455         unsigned char shift_r;
 456         unsigned int mask;
 457         const char **texts;
 458         void *dapm;
 459 };
 460
 461 #endif