include/uapi/sound/asoc.h

   1 /*
   2  * uapi/sound/asoc.h -- ALSA SoC Firmware Controls and DAPM
   3  *
   4  * Copyright (C) 2012 Texas Instruments Inc.
   5  * Copyright (C) 2015 Intel Corporation.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Simple file API to load FW that includes mixers, coefficients, DAPM graphs,
  12  * algorithms, equalisers, DAIs, widgets etc.
  13 */
  14
  15 #ifndef __LINUX_UAPI_SND_ASOC_H
  16 #define __LINUX_UAPI_SND_ASOC_H
  17
  18 #include <linux/types.h>
  19 #include <sound/asound.h>
  20
  21 /*
  22  * Maximum number of channels topology kcontrol can represent.
  23  */
  24 #define SND_SOC_TPLG_MAX_CHAN           8
  25
  26 /*
  27  * Maximum number of PCM formats capability
  28  */
  29 #define SND_SOC_TPLG_MAX_FORMATS        16
  30
  31 /*
  32  * Maximum number of PCM stream configs
  33  */
  34 #define SND_SOC_TPLG_STREAM_CONFIG_MAX  8
  35
  36 /*
  37  * Maximum number of physical link's hardware configs
  38  */
  39 #define SND_SOC_TPLG_HW_CONFIG_MAX      8
  40
  41 /* individual kcontrol info types - can be mixed with other types */
  42 #define SND_SOC_TPLG_CTL_VOLSW          1
  43 #define SND_SOC_TPLG_CTL_VOLSW_SX       2
  44 #define SND_SOC_TPLG_CTL_VOLSW_XR_SX    3
  45 #define SND_SOC_TPLG_CTL_ENUM           4
  46 #define SND_SOC_TPLG_CTL_BYTES          5
  47 #define SND_SOC_TPLG_CTL_ENUM_VALUE     6
  48 #define SND_SOC_TPLG_CTL_RANGE          7
  49 #define SND_SOC_TPLG_CTL_STROBE         8
  50
  51
  52 /* individual widget kcontrol info types - can be mixed with other types */
  53 #define SND_SOC_TPLG_DAPM_CTL_VOLSW             64
  54 #define SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE       65
  55 #define SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT         66
  56 #define SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE        67
  57 #define SND_SOC_TPLG_DAPM_CTL_PIN               68
  58
  59 /* DAPM widget types - add new items to the end */
  60 #define SND_SOC_TPLG_DAPM_INPUT         0
  61 #define SND_SOC_TPLG_DAPM_OUTPUT        1
  62 #define SND_SOC_TPLG_DAPM_MUX           2
  63 #define SND_SOC_TPLG_DAPM_MIXER         3
  64 #define SND_SOC_TPLG_DAPM_PGA           4
  65 #define SND_SOC_TPLG_DAPM_OUT_DRV       5
  66 #define SND_SOC_TPLG_DAPM_ADC           6
  67 #define SND_SOC_TPLG_DAPM_DAC           7
  68 #define SND_SOC_TPLG_DAPM_SWITCH        8
  69 #define SND_SOC_TPLG_DAPM_PRE           9
  70 #define SND_SOC_TPLG_DAPM_POST          10
  71 #define SND_SOC_TPLG_DAPM_AIF_IN        11
  72 #define SND_SOC_TPLG_DAPM_AIF_OUT       12
  73 #define SND_SOC_TPLG_DAPM_DAI_IN        13
  74 #define SND_SOC_TPLG_DAPM_DAI_OUT       14
  75 #define SND_SOC_TPLG_DAPM_DAI_LINK      15
  76 #define SND_SOC_TPLG_DAPM_LAST          SND_SOC_TPLG_DAPM_DAI_LINK
  77
  78 /* Header magic number and string sizes */
  79 #define SND_SOC_TPLG_MAGIC              0x41536F43 /* ASoC */
  80
  81 /* string sizes */
  82 #define SND_SOC_TPLG_NUM_TEXTS          16
  83
  84 /* ABI version */
  85 #define SND_SOC_TPLG_ABI_VERSION        0x5     /* current version */
  86 #define SND_SOC_TPLG_ABI_VERSION_MIN    0x4     /* oldest version supported */
  87
  88 /* Max size of TLV data */
  89 #define SND_SOC_TPLG_TLV_SIZE           32
  90
  91 /*
  92  * File and Block header data types.
  93  * Add new generic and vendor types to end of list.
  94  * Generic types are handled by the core whilst vendors types are passed
  95  * to the component drivers for handling.
  96  */
  97 #define SND_SOC_TPLG_TYPE_MIXER         1
  98 #define SND_SOC_TPLG_TYPE_BYTES         2
  99 #define SND_SOC_TPLG_TYPE_ENUM          3
 100 #define SND_SOC_TPLG_TYPE_DAPM_GRAPH    4
 101 #define SND_SOC_TPLG_TYPE_DAPM_WIDGET   5
 102 #define SND_SOC_TPLG_TYPE_DAI_LINK      6
 103 #define SND_SOC_TPLG_TYPE_PCM           7
 104 #define SND_SOC_TPLG_TYPE_MANIFEST      8
 105 #define SND_SOC_TPLG_TYPE_CODEC_LINK    9
 106 #define SND_SOC_TPLG_TYPE_BACKEND_LINK  10
 107 #define SND_SOC_TPLG_TYPE_PDATA         11
 108 #define SND_SOC_TPLG_TYPE_DAI           12
 109 #define SND_SOC_TPLG_TYPE_MAX           SND_SOC_TPLG_TYPE_DAI
 110
 111 /* vendor block IDs - please add new vendor types to end */
 112 #define SND_SOC_TPLG_TYPE_VENDOR_FW     1000
 113 #define SND_SOC_TPLG_TYPE_VENDOR_CONFIG 1001
 114 #define SND_SOC_TPLG_TYPE_VENDOR_COEFF  1002
 115 #define SND_SOC_TPLG_TYPEVENDOR_CODEC   1003
 116
 117 #define SND_SOC_TPLG_STREAM_PLAYBACK    0
 118 #define SND_SOC_TPLG_STREAM_CAPTURE     1
 119
 120 /* vendor tuple types */
 121 #define SND_SOC_TPLG_TUPLE_TYPE_UUID    0
 122 #define SND_SOC_TPLG_TUPLE_TYPE_STRING  1
 123 #define SND_SOC_TPLG_TUPLE_TYPE_BOOL    2
 124 #define SND_SOC_TPLG_TUPLE_TYPE_BYTE    3
 125 #define SND_SOC_TPLG_TUPLE_TYPE_WORD    4
 126 #define SND_SOC_TPLG_TUPLE_TYPE_SHORT   5
 127
 128 /* DAI flags */
 129 #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_RATES         (1 << 0)
 130 #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS      (1 << 1)
 131 #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS    (1 << 2)
 132
 133 /* DAI physical PCM data formats.
 134  * Add new formats to the end of the list.
 135  */
 136 #define SND_SOC_DAI_FORMAT_I2S          1 /* I2S mode */
 137 #define SND_SOC_DAI_FORMAT_RIGHT_J      2 /* Right Justified mode */
 138 #define SND_SOC_DAI_FORMAT_LEFT_J       3 /* Left Justified mode */
 139 #define SND_SOC_DAI_FORMAT_DSP_A        4 /* L data MSB after FRM LRC */
 140 #define SND_SOC_DAI_FORMAT_DSP_B        5 /* L data MSB during FRM LRC */
 141 #define SND_SOC_DAI_FORMAT_AC97         6 /* AC97 */
 142 #define SND_SOC_DAI_FORMAT_PDM          7 /* Pulse density modulation */
 143
 144 /* left and right justified also known as MSB and LSB respectively */
 145 #define SND_SOC_DAI_FORMAT_MSB          SND_SOC_DAI_FORMAT_LEFT_J
 146 #define SND_SOC_DAI_FORMAT_LSB          SND_SOC_DAI_FORMAT_RIGHT_J
 147
 148 /* DAI link flags */
 149 #define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_RATES         (1 << 0)
 150 #define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_CHANNELS      (1 << 1)
 151 #define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS    (1 << 2)
 152 #define SND_SOC_TPLG_LNK_FLGBIT_VOICE_WAKEUP            (1 << 3)
 153
 154 /*
 155  * Block Header.
 156  * This header precedes all object and object arrays below.
 157  */
 158 struct snd_soc_tplg_hdr {
 159         __le32 magic;           /* magic number */
 160         __le32 abi;             /* ABI version */
 161         __le32 version;         /* optional vendor specific version details */
 162         __le32 type;            /* SND_SOC_TPLG_TYPE_ */
 163         __le32 size;            /* size of this structure */
 164         __le32 vendor_type;     /* optional vendor specific type info */
 165         __le32 payload_size;    /* data bytes, excluding this header */
 166         __le32 index;           /* identifier for block */
 167         __le32 count;           /* number of elements in block */
 168 } __attribute__((packed));
 169
 170 /* vendor tuple for uuid */
 171 struct snd_soc_tplg_vendor_uuid_elem {
 172         __le32 token;
 173         char uuid[16];
 174 } __attribute__((packed));
 175
 176 /* vendor tuple for a bool/byte/short/word value */
 177 struct snd_soc_tplg_vendor_value_elem {
 178         __le32 token;
 179         __le32 value;
 180 } __attribute__((packed));
 181
 182 /* vendor tuple for string */
 183 struct snd_soc_tplg_vendor_string_elem {
 184         __le32 token;
 185         char string[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 186 } __attribute__((packed));
 187
 188 struct snd_soc_tplg_vendor_array {
 189         __le32 size;    /* size in bytes of the array, including all elements */
 190         __le32 type;    /* SND_SOC_TPLG_TUPLE_TYPE_ */
 191         __le32 num_elems;       /* number of elements in array */
 192         union {
 193                 struct snd_soc_tplg_vendor_uuid_elem uuid[0];
 194                 struct snd_soc_tplg_vendor_value_elem value[0];
 195                 struct snd_soc_tplg_vendor_string_elem string[0];
 196         };
 197 } __attribute__((packed));
 198
 199 /*
 200  * Private data.
 201  * All topology objects may have private data that can be used by the driver or
 202  * firmware. Core will ignore this data.
 203  */
 204 struct snd_soc_tplg_private {
 205         __le32 size;    /* in bytes of private data */
 206         union {
 207                 char data[0];
 208                 struct snd_soc_tplg_vendor_array array[0];
 209         };
 210 } __attribute__((packed));
 211
 212 /*
 213  * Kcontrol TLV data.
 214  */
 215 struct snd_soc_tplg_tlv_dbscale {
 216         __le32 min;
 217         __le32 step;
 218         __le32 mute;
 219 } __attribute__((packed));
 220
 221 struct snd_soc_tplg_ctl_tlv {
 222         __le32 size;    /* in bytes of this structure */
 223         __le32 type;    /* SNDRV_CTL_TLVT_*, type of TLV */
 224         union {
 225                 __le32 data[SND_SOC_TPLG_TLV_SIZE];
 226                 struct snd_soc_tplg_tlv_dbscale scale;
 227         };
 228 } __attribute__((packed));
 229
 230 /*
 231  * Kcontrol channel data
 232  */
 233 struct snd_soc_tplg_channel {
 234         __le32 size;    /* in bytes of this structure */
 235         __le32 reg;
 236         __le32 shift;
 237         __le32 id;      /* ID maps to Left, Right, LFE etc */
 238 } __attribute__((packed));
 239
 240 /*
 241  * Genericl Operations IDs, for binding Kcontrol or Bytes ext ops
 242  * Kcontrol ops need get/put/info.
 243  * Bytes ext ops need get/put.
 244  */
 245 struct snd_soc_tplg_io_ops {
 246         __le32 get;
 247         __le32 put;
 248         __le32 info;
 249 } __attribute__((packed));
 250
 251 /*
 252  * kcontrol header
 253  */
 254 struct snd_soc_tplg_ctl_hdr {
 255         __le32 size;    /* in bytes of this structure */
 256         __le32 type;
 257         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 258         __le32 access;
 259         struct snd_soc_tplg_io_ops ops;
 260         struct snd_soc_tplg_ctl_tlv tlv;
 261 } __attribute__((packed));
 262
 263 /*
 264  * Stream Capabilities
 265  */
 266 struct snd_soc_tplg_stream_caps {
 267         __le32 size;            /* in bytes of this structure */
 268         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 269         __le64 formats; /* supported formats SNDRV_PCM_FMTBIT_* */
 270         __le32 rates;           /* supported rates SNDRV_PCM_RATE_* */
 271         __le32 rate_min;        /* min rate */
 272         __le32 rate_max;        /* max rate */
 273         __le32 channels_min;    /* min channels */
 274         __le32 channels_max;    /* max channels */
 275         __le32 periods_min;     /* min number of periods */
 276         __le32 periods_max;     /* max number of periods */
 277         __le32 period_size_min; /* min period size bytes */
 278         __le32 period_size_max; /* max period size bytes */
 279         __le32 buffer_size_min; /* min buffer size bytes */
 280         __le32 buffer_size_max; /* max buffer size bytes */
 281         __le32 sig_bits;        /* number of bits of content */
 282 } __attribute__((packed));
 283
 284 /*
 285  * FE or BE Stream configuration supported by SW/FW
 286  */
 287 struct snd_soc_tplg_stream {
 288         __le32 size;            /* in bytes of this structure */
 289         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* Name of the stream */
 290         __le64 format;          /* SNDRV_PCM_FMTBIT_* */
 291         __le32 rate;            /* SNDRV_PCM_RATE_* */
 292         __le32 period_bytes;    /* size of period in bytes */
 293         __le32 buffer_bytes;    /* size of buffer in bytes */
 294         __le32 channels;        /* channels */
 295 } __attribute__((packed));
 296
 297
 298 /*
 299  * Describes a physical link's runtime supported hardware config,
 300  * i.e. hardware audio formats.
 301  */
 302 struct snd_soc_tplg_hw_config {
 303         __le32 size;            /* in bytes of this structure */
 304         __le32 id;              /* unique ID - - used to match */
 305         __le32 fmt;             /* SND_SOC_DAI_FORMAT_ format value */
 306         __u8 clock_gated;       /* 1 if clock can be gated to save power */
 307         __u8 invert_bclk;       /* 1 for inverted BCLK, 0 for normal */
 308         __u8 invert_fsync;      /* 1 for inverted frame clock, 0 for normal */
 309         __u8 bclk_master;       /* 1 for master of BCLK, 0 for slave */
 310         __u8 fsync_master;      /* 1 for master of FSYNC, 0 for slave */
 311         __u8 mclk_direction;    /* 0 for input, 1 for output */
 312         __le16 reserved;        /* for 32bit alignment */
 313         __le32 mclk_rate;       /* MCLK or SYSCLK freqency in Hz */
 314         __le32 bclk_rate;       /* BCLK freqency in Hz */
 315         __le32 fsync_rate;      /* frame clock in Hz */
 316         __le32 tdm_slots;       /* number of TDM slots in use */
 317         __le32 tdm_slot_width;  /* width in bits for each slot */
 318         __le32 tx_slots;        /* bit mask for active Tx slots */
 319         __le32 rx_slots;        /* bit mask for active Rx slots */
 320         __le32 tx_channels;     /* number of Tx channels */
 321         __le32 tx_chanmap[SND_SOC_TPLG_MAX_CHAN]; /* array of slot number */
 322         __le32 rx_channels;     /* number of Rx channels */
 323         __le32 rx_chanmap[SND_SOC_TPLG_MAX_CHAN]; /* array of slot number */
 324 } __attribute__((packed));
 325
 326 /*
 327  * Manifest. List totals for each payload type. Not used in parsing, but will
 328  * be passed to the component driver before any other objects in order for any
 329  * global component resource allocations.
 330  *
 331  * File block representation for manifest :-
 332  * +-----------------------------------+----+
 333  * | struct snd_soc_tplg_hdr           |  1 |
 334  * +-----------------------------------+----+
 335  * | struct snd_soc_tplg_manifest      |  1 |
 336  * +-----------------------------------+----+
 337  */
 338 struct snd_soc_tplg_manifest {
 339         __le32 size;            /* in bytes of this structure */
 340         __le32 control_elems;   /* number of control elements */
 341         __le32 widget_elems;    /* number of widget elements */
 342         __le32 graph_elems;     /* number of graph elements */
 343         __le32 pcm_elems;       /* number of PCM elements */
 344         __le32 dai_link_elems;  /* number of DAI link elements */
 345         __le32 dai_elems;       /* number of physical DAI elements */
 346         __le32 reserved[20];    /* reserved for new ABI element types */
 347         struct snd_soc_tplg_private priv;
 348 } __attribute__((packed));
 349
 350 /*
 351  * Mixer kcontrol.
 352  *
 353  * File block representation for mixer kcontrol :-
 354  * +-----------------------------------+----+
 355  * | struct snd_soc_tplg_hdr           |  1 |
 356  * +-----------------------------------+----+
 357  * | struct snd_soc_tplg_mixer_control |  N |
 358  * +-----------------------------------+----+
 359  */
 360 struct snd_soc_tplg_mixer_control {
 361         struct snd_soc_tplg_ctl_hdr hdr;
 362         __le32 size;    /* in bytes of this structure */
 363         __le32 min;
 364         __le32 max;
 365         __le32 platform_max;
 366         __le32 invert;
 367         __le32 num_channels;
 368         struct snd_soc_tplg_channel channel[SND_SOC_TPLG_MAX_CHAN];
 369         struct snd_soc_tplg_private priv;
 370 } __attribute__((packed));
 371
 372 /*
 373  * Enumerated kcontrol
 374  *
 375  * File block representation for enum kcontrol :-
 376  * +-----------------------------------+----+
 377  * | struct snd_soc_tplg_hdr           |  1 |
 378  * +-----------------------------------+----+
 379  * | struct snd_soc_tplg_enum_control  |  N |
 380  * +-----------------------------------+----+
 381  */
 382 struct snd_soc_tplg_enum_control {
 383         struct snd_soc_tplg_ctl_hdr hdr;
 384         __le32 size;    /* in bytes of this structure */
 385         __le32 num_channels;
 386         struct snd_soc_tplg_channel channel[SND_SOC_TPLG_MAX_CHAN];
 387         __le32 items;
 388         __le32 mask;
 389         __le32 count;
 390         char texts[SND_SOC_TPLG_NUM_TEXTS][SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 391         __le32 values[SND_SOC_TPLG_NUM_TEXTS * SNDRV_CTL_ELEM_ID_NAME_MAXLEN / 4];
 392         struct snd_soc_tplg_private priv;
 393 } __attribute__((packed));
 394
 395 /*
 396  * Bytes kcontrol
 397  *
 398  * File block representation for bytes kcontrol :-
 399  * +-----------------------------------+----+
 400  * | struct snd_soc_tplg_hdr           |  1 |
 401  * +-----------------------------------+----+
 402  * | struct snd_soc_tplg_bytes_control |  N |
 403  * +-----------------------------------+----+
 404  */
 405 struct snd_soc_tplg_bytes_control {
 406         struct snd_soc_tplg_ctl_hdr hdr;
 407         __le32 size;    /* in bytes of this structure */
 408         __le32 max;
 409         __le32 mask;
 410         __le32 base;
 411         __le32 num_regs;
 412         struct snd_soc_tplg_io_ops ext_ops;
 413         struct snd_soc_tplg_private priv;
 414 } __attribute__((packed));
 415
 416 /*
 417  * DAPM Graph Element
 418  *
 419  * File block representation for DAPM graph elements :-
 420  * +-------------------------------------+----+
 421  * | struct snd_soc_tplg_hdr             |  1 |
 422  * +-------------------------------------+----+
 423  * | struct snd_soc_tplg_dapm_graph_elem |  N |
 424  * +-------------------------------------+----+
 425  */
 426 struct snd_soc_tplg_dapm_graph_elem {
 427         char sink[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 428         char control[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 429         char source[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 430 } __attribute__((packed));
 431
 432 /*
 433  * DAPM Widget.
 434  *
 435  * File block representation for DAPM widget :-
 436  * +-------------------------------------+-----+
 437  * | struct snd_soc_tplg_hdr             |  1  |
 438  * +-------------------------------------+-----+
 439  * | struct snd_soc_tplg_dapm_widget     |  N  |
 440  * +-------------------------------------+-----+
 441  * |   struct snd_soc_tplg_enum_control  | 0|1 |
 442  * |   struct snd_soc_tplg_mixer_control | 0|N |
 443  * +-------------------------------------+-----+
 444  *
 445  * Optional enum or mixer control can be appended to the end of each widget
 446  * in the block.
 447  */
 448 struct snd_soc_tplg_dapm_widget {
 449         __le32 size;            /* in bytes of this structure */
 450         __le32 id;              /* SND_SOC_DAPM_CTL */
 451         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 452         char sname[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 453
 454         __le32 reg;             /* negative reg = no direct dapm */
 455         __le32 shift;           /* bits to shift */
 456         __le32 mask;            /* non-shifted mask */
 457         __le32 subseq;          /* sort within widget type */
 458         __le32 invert;          /* invert the power bit */
 459         __le32 ignore_suspend;  /* kept enabled over suspend */
 460         __le16 event_flags;
 461         __le16 event_type;
 462         __le32 num_kcontrols;
 463         struct snd_soc_tplg_private priv;
 464         /*
 465          * kcontrols that relate to this widget
 466          * follow here after widget private data
 467          */
 468 } __attribute__((packed));
 469
 470
 471 /*
 472  * Describes SW/FW specific features of PCM (FE DAI & DAI link).
 473  *
 474  * File block representation for PCM :-
 475  * +-----------------------------------+-----+
 476  * | struct snd_soc_tplg_hdr           |  1  |
 477  * +-----------------------------------+-----+
 478  * | struct snd_soc_tplg_pcm           |  N  |
 479  * +-----------------------------------+-----+
 480  */
 481 struct snd_soc_tplg_pcm {
 482         __le32 size;            /* in bytes of this structure */
 483         char pcm_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 484         char dai_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 485         __le32 pcm_id;          /* unique ID - used to match with DAI link */
 486         __le32 dai_id;          /* unique ID - used to match */
 487         __le32 playback;        /* supports playback mode */
 488         __le32 capture;         /* supports capture mode */
 489         __le32 compress;        /* 1 = compressed; 0 = PCM */
 490         struct snd_soc_tplg_stream stream[SND_SOC_TPLG_STREAM_CONFIG_MAX]; /* for DAI link */
 491         __le32 num_streams;     /* number of streams */
 492         struct snd_soc_tplg_stream_caps caps[2]; /* playback and capture for DAI */
 493         __le32 flag_mask;       /* bitmask of flags to configure */
 494         __le32 flags;           /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */
 495         struct snd_soc_tplg_private priv;
 496 } __attribute__((packed));
 497
 498
 499 /*
 500  * Describes the physical link runtime supported configs or params
 501  *
 502  * File block representation for physical link config :-
 503  * +-----------------------------------+-----+
 504  * | struct snd_soc_tplg_hdr           |  1  |
 505  * +-----------------------------------+-----+
 506  * | struct snd_soc_tplg_link_config   |  N  |
 507  * +-----------------------------------+-----+
 508  */
 509 struct snd_soc_tplg_link_config {
 510         __le32 size;            /* in bytes of this structure */
 511         __le32 id;              /* unique ID - used to match */
 512         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* name - used to match */
 513         char stream_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* stream name - used to match */
 514         struct snd_soc_tplg_stream stream[SND_SOC_TPLG_STREAM_CONFIG_MAX]; /* supported configs playback and captrure */
 515         __le32 num_streams;     /* number of streams */
 516         struct snd_soc_tplg_hw_config hw_config[SND_SOC_TPLG_HW_CONFIG_MAX]; /* hw configs */
 517         __le32 num_hw_configs;         /* number of hw configs */
 518         __le32 default_hw_config_id;   /* default hw config ID for init */
 519         __le32 flag_mask;       /* bitmask of flags to configure */
 520         __le32 flags;           /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */
 521         struct snd_soc_tplg_private priv;
 522 } __attribute__((packed));
 523
 524 /*
 525  * Describes SW/FW specific features of physical DAI.
 526  * It can be used to configure backend DAIs for DPCM.
 527  *
 528  * File block representation for physical DAI :-
 529  * +-----------------------------------+-----+
 530  * | struct snd_soc_tplg_hdr           |  1  |
 531  * +-----------------------------------+-----+
 532  * | struct snd_soc_tplg_dai           |  N  |
 533  * +-----------------------------------+-----+
 534  */
 535 struct snd_soc_tplg_dai {
 536         __le32 size;            /* in bytes of this structure */
 537         char dai_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* name - used to match */
 538         __le32 dai_id;          /* unique ID - used to match */
 539         __le32 playback;        /* supports playback mode */
 540         __le32 capture;         /* supports capture mode */
 541         struct snd_soc_tplg_stream_caps caps[2]; /* playback and capture for DAI */
 542         __le32 flag_mask;       /* bitmask of flags to configure */
 543         __le32 flags;           /* SND_SOC_TPLG_DAI_FLGBIT_* */
 544         struct snd_soc_tplg_private priv;
 545 } __attribute__((packed));
 546 #endif