linux/include/sound/soc-dapm.h
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   1/*
   2 * linux/sound/soc-dapm.h -- ALSA SoC Dynamic Audio Power Management
   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_DAPM_H
  14#define __LINUX_SND_SOC_DAPM_H
  15
  16#include <linux/device.h>
  17#include <linux/types.h>
  18#include <sound/control.h>
  19#include <sound/soc.h>
  20
  21/* widget has no PM register bit */
  22#define SND_SOC_NOPM    -1
  23
  24/*
  25 * SoC dynamic audio power management
  26 *
  27 * We can have upto 4 power domains
  28 *      1. Codec domain - VREF, VMID
  29 *     Usually controlled at codec probe/remove, although can be set
  30 *     at stream time if power is not needed for sidetone, etc.
  31 *  2. Platform/Machine domain - physically connected inputs and outputs
  32 *     Is platform/machine and user action specific, is set in the machine
  33 *     driver and by userspace e.g when HP are inserted
  34 *  3. Path domain - Internal codec path mixers
  35 *     Are automatically set when mixer and mux settings are
  36 *     changed by the user.
  37 *  4. Stream domain - DAC's and ADC's.
  38 *     Enabled when stream playback/capture is started.
  39 */
  40
  41/* codec domain */
  42#define SND_SOC_DAPM_VMID(wname) \
  43{       .id = snd_soc_dapm_vmid, .name = wname, .kcontrols = NULL, \
  44        .num_kcontrols = 0}
  45
  46/* platform domain */
  47#define SND_SOC_DAPM_INPUT(wname) \
  48{       .id = snd_soc_dapm_input, .name = wname, .kcontrols = NULL, \
  49        .num_kcontrols = 0}
  50#define SND_SOC_DAPM_OUTPUT(wname) \
  51{       .id = snd_soc_dapm_output, .name = wname, .kcontrols = NULL, \
  52        .num_kcontrols = 0}
  53#define SND_SOC_DAPM_MIC(wname, wevent) \
  54{       .id = snd_soc_dapm_mic, .name = wname, .kcontrols = NULL, \
  55        .num_kcontrols = 0, .event = wevent, \
  56        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
  57#define SND_SOC_DAPM_HP(wname, wevent) \
  58{       .id = snd_soc_dapm_hp, .name = wname, .kcontrols = NULL, \
  59        .num_kcontrols = 0, .event = wevent, \
  60        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  61#define SND_SOC_DAPM_SPK(wname, wevent) \
  62{       .id = snd_soc_dapm_spk, .name = wname, .kcontrols = NULL, \
  63        .num_kcontrols = 0, .event = wevent, \
  64        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  65#define SND_SOC_DAPM_LINE(wname, wevent) \
  66{       .id = snd_soc_dapm_line, .name = wname, .kcontrols = NULL, \
  67        .num_kcontrols = 0, .event = wevent, \
  68        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  69
  70/* path domain */
  71#define SND_SOC_DAPM_PGA(wname, wreg, wshift, winvert,\
  72         wcontrols, wncontrols) \
  73{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
  74        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols}
  75#define SND_SOC_DAPM_MIXER(wname, wreg, wshift, winvert, \
  76         wcontrols, wncontrols)\
  77{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
  78        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols}
  79#define SND_SOC_DAPM_MIXER_NAMED_CTL(wname, wreg, wshift, winvert, \
  80         wcontrols, wncontrols)\
  81{       .id = snd_soc_dapm_mixer_named_ctl, .name = wname, .reg = wreg, \
  82        .shift = wshift, .invert = winvert, .kcontrols = wcontrols, \
  83        .num_kcontrols = wncontrols}
  84#define SND_SOC_DAPM_MICBIAS(wname, wreg, wshift, winvert) \
  85{       .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
  86        .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0}
  87#define SND_SOC_DAPM_SWITCH(wname, wreg, wshift, winvert, wcontrols) \
  88{       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
  89        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
  90#define SND_SOC_DAPM_MUX(wname, wreg, wshift, winvert, wcontrols) \
  91{       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
  92        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
  93#define SND_SOC_DAPM_VALUE_MUX(wname, wreg, wshift, winvert, wcontrols) \
  94{       .id = snd_soc_dapm_value_mux, .name = wname, .reg = wreg, \
  95        .shift = wshift, .invert = winvert, .kcontrols = wcontrols, \
  96        .num_kcontrols = 1}
  97
  98/* Simplified versions of above macros, assuming wncontrols = ARRAY_SIZE(wcontrols) */
  99#define SOC_PGA_ARRAY(wname, wreg, wshift, winvert,\
 100         wcontrols) \
 101{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 102        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols)}
 103#define SOC_MIXER_ARRAY(wname, wreg, wshift, winvert, \
 104         wcontrols)\
 105{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 106        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols)}
 107#define SOC_MIXER_NAMED_CTL_ARRAY(wname, wreg, wshift, winvert, \
 108         wcontrols)\
 109{       .id = snd_soc_dapm_mixer_named_ctl, .name = wname, .reg = wreg, \
 110        .shift = wshift, .invert = winvert, .kcontrols = wcontrols, \
 111        .num_kcontrols = ARRAY_SIZE(wcontrols)}
 112
 113/* path domain with event - event handler must return 0 for success */
 114#define SND_SOC_DAPM_PGA_E(wname, wreg, wshift, winvert, wcontrols, \
 115        wncontrols, wevent, wflags) \
 116{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 117        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
 118        .event = wevent, .event_flags = wflags}
 119#define SND_SOC_DAPM_MIXER_E(wname, wreg, wshift, winvert, wcontrols, \
 120        wncontrols, wevent, wflags) \
 121{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 122        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
 123        .event = wevent, .event_flags = wflags}
 124#define SND_SOC_DAPM_MIXER_NAMED_CTL_E(wname, wreg, wshift, winvert, \
 125        wcontrols, wncontrols, wevent, wflags) \
 126{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 127        .invert = winvert, .kcontrols = wcontrols, \
 128        .num_kcontrols = wncontrols, .event = wevent, .event_flags = wflags}
 129#define SND_SOC_DAPM_MICBIAS_E(wname, wreg, wshift, winvert, wevent, wflags) \
 130{       .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
 131        .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0, \
 132        .event = wevent, .event_flags = wflags}
 133#define SND_SOC_DAPM_SWITCH_E(wname, wreg, wshift, winvert, wcontrols, \
 134        wevent, wflags) \
 135{       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
 136        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1, \
 137        .event = wevent, .event_flags = wflags}
 138#define SND_SOC_DAPM_MUX_E(wname, wreg, wshift, winvert, wcontrols, \
 139        wevent, wflags) \
 140{       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
 141        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1, \
 142        .event = wevent, .event_flags = wflags}
 143
 144/* Simplified versions of above macros, assuming wncontrols = ARRAY_SIZE(wcontrols) */
 145#define SOC_PGA_E_ARRAY(wname, wreg, wshift, winvert, wcontrols, \
 146        wevent, wflags) \
 147{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 148        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols), \
 149        .event = wevent, .event_flags = wflags}
 150#define SOC_MIXER_E_ARRAY(wname, wreg, wshift, winvert, wcontrols, \
 151        wevent, wflags) \
 152{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 153        .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols), \
 154        .event = wevent, .event_flags = wflags}
 155#define SOC_MIXER_NAMED_CTL_E_ARRAY(wname, wreg, wshift, winvert, \
 156        wcontrols, wevent, wflags) \
 157{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 158        .invert = winvert, .kcontrols = wcontrols, \
 159        .num_kcontrols = ARRAY_SIZE(wcontrols), .event = wevent, .event_flags = wflags}
 160
 161/* events that are pre and post DAPM */
 162#define SND_SOC_DAPM_PRE(wname, wevent) \
 163{       .id = snd_soc_dapm_pre, .name = wname, .kcontrols = NULL, \
 164        .num_kcontrols = 0, .event = wevent, \
 165        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD}
 166#define SND_SOC_DAPM_POST(wname, wevent) \
 167{       .id = snd_soc_dapm_post, .name = wname, .kcontrols = NULL, \
 168        .num_kcontrols = 0, .event = wevent, \
 169        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD}
 170
 171/* stream domain */
 172#define SND_SOC_DAPM_AIF_IN(wname, stname, wslot, wreg, wshift, winvert) \
 173{       .id = snd_soc_dapm_aif_in, .name = wname, .sname = stname, \
 174        .reg = wreg, .shift = wshift, .invert = winvert }
 175#define SND_SOC_DAPM_AIF_OUT(wname, stname, wslot, wreg, wshift, winvert) \
 176{       .id = snd_soc_dapm_aif_out, .name = wname, .sname = stname, \
 177        .reg = wreg, .shift = wshift, .invert = winvert }
 178#define SND_SOC_DAPM_DAC(wname, stname, wreg, wshift, winvert) \
 179{       .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
 180        .shift = wshift, .invert = winvert}
 181#define SND_SOC_DAPM_DAC_E(wname, stname, wreg, wshift, winvert, \
 182                           wevent, wflags)                              \
 183{       .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
 184        .shift = wshift, .invert = winvert, \
 185        .event = wevent, .event_flags = wflags}
 186#define SND_SOC_DAPM_ADC(wname, stname, wreg, wshift, winvert) \
 187{       .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
 188        .shift = wshift, .invert = winvert}
 189#define SND_SOC_DAPM_ADC_E(wname, stname, wreg, wshift, winvert, \
 190                           wevent, wflags)                              \
 191{       .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
 192        .shift = wshift, .invert = winvert, \
 193        .event = wevent, .event_flags = wflags}
 194
 195/* generic widgets */
 196#define SND_SOC_DAPM_REG(wid, wname, wreg, wshift, wmask, won_val, woff_val) \
 197{       .id = wid, .name = wname, .kcontrols = NULL, .num_kcontrols = 0, \
 198        .reg = -((wreg) + 1), .shift = wshift, .mask = wmask, \
 199        .on_val = won_val, .off_val = woff_val, .event = dapm_reg_event, \
 200        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
 201#define SND_SOC_DAPM_SUPPLY(wname, wreg, wshift, winvert, wevent, wflags) \
 202{       .id = snd_soc_dapm_supply, .name = wname, .reg = wreg,  \
 203        .shift = wshift, .invert = winvert, .event = wevent, \
 204        .event_flags = wflags}
 205
 206/* dapm kcontrol types */
 207#define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \
 208{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 209        .info = snd_soc_info_volsw, \
 210        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 211        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 212#define SOC_DAPM_DOUBLE(xname, reg, shift_left, shift_right, max, invert, \
 213        power) \
 214{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 215        .info = snd_soc_info_volsw, \
 216        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 217        .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
 218                ((max) << 16) | ((invert) << 24) }
 219#define SOC_DAPM_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 220{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 221        .info = snd_soc_info_volsw, \
 222        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 223        .tlv.p = (tlv_array), \
 224        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 225        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 226#define SOC_DAPM_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, \
 227        power, tlv_array) \
 228{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 229        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 230        .tlv.p = (tlv_array), \
 231        .info = snd_soc_info_volsw, \
 232        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 233        .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
 234                ((max) << 16) | ((invert) << 24) }
 235#define SOC_DAPM_ENUM(xname, xenum) \
 236{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 237        .info = snd_soc_info_enum_double, \
 238        .get = snd_soc_dapm_get_enum_double, \
 239        .put = snd_soc_dapm_put_enum_double, \
 240        .private_value = (unsigned long)&xenum }
 241#define SOC_DAPM_ENUM_VIRT(xname, xenum)                    \
 242{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 243        .info = snd_soc_info_enum_double, \
 244        .get = snd_soc_dapm_get_enum_virt, \
 245        .put = snd_soc_dapm_put_enum_virt, \
 246        .private_value = (unsigned long)&xenum }
 247#define SOC_DAPM_VALUE_ENUM(xname, xenum) \
 248{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 249        .info = snd_soc_info_enum_double, \
 250        .get = snd_soc_dapm_get_value_enum_double, \
 251        .put = snd_soc_dapm_put_value_enum_double, \
 252        .private_value = (unsigned long)&xenum }
 253#define SOC_DAPM_PIN_SWITCH(xname) \
 254{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname " Switch", \
 255        .info = snd_soc_dapm_info_pin_switch, \
 256        .get = snd_soc_dapm_get_pin_switch, \
 257        .put = snd_soc_dapm_put_pin_switch, \
 258        .private_value = (unsigned long)xname }
 259
 260/* dapm stream operations */
 261#define SND_SOC_DAPM_STREAM_NOP                 0x0
 262#define SND_SOC_DAPM_STREAM_START               0x1
 263#define SND_SOC_DAPM_STREAM_STOP                0x2
 264#define SND_SOC_DAPM_STREAM_SUSPEND             0x4
 265#define SND_SOC_DAPM_STREAM_RESUME              0x8
 266#define SND_SOC_DAPM_STREAM_PAUSE_PUSH  0x10
 267#define SND_SOC_DAPM_STREAM_PAUSE_RELEASE       0x20
 268
 269/* dapm event types */
 270#define SND_SOC_DAPM_PRE_PMU    0x1     /* before widget power up */
 271#define SND_SOC_DAPM_POST_PMU   0x2             /* after widget power up */
 272#define SND_SOC_DAPM_PRE_PMD    0x4     /* before widget power down */
 273#define SND_SOC_DAPM_POST_PMD   0x8             /* after widget power down */
 274#define SND_SOC_DAPM_PRE_REG    0x10    /* before audio path setup */
 275#define SND_SOC_DAPM_POST_REG   0x20    /* after audio path setup */
 276
 277/* convenience event type detection */
 278#define SND_SOC_DAPM_EVENT_ON(e)        \
 279        (e & (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU))
 280#define SND_SOC_DAPM_EVENT_OFF(e)       \
 281        (e & (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD))
 282
 283struct snd_soc_dapm_widget;
 284enum snd_soc_dapm_type;
 285struct snd_soc_dapm_path;
 286struct snd_soc_dapm_pin;
 287struct snd_soc_dapm_route;
 288
 289int dapm_reg_event(struct snd_soc_dapm_widget *w,
 290                   struct snd_kcontrol *kcontrol, int event);
 291
 292/* dapm controls */
 293int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
 294        struct snd_ctl_elem_value *ucontrol);
 295int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
 296        struct snd_ctl_elem_value *ucontrol);
 297int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 298        struct snd_ctl_elem_value *ucontrol);
 299int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 300        struct snd_ctl_elem_value *ucontrol);
 301int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
 302        struct snd_ctl_elem_value *ucontrol);
 303int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
 304        struct snd_ctl_elem_value *ucontrol);
 305int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
 306        struct snd_ctl_elem_value *ucontrol);
 307int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
 308        struct snd_ctl_elem_value *ucontrol);
 309int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
 310        struct snd_ctl_elem_info *uinfo);
 311int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
 312        struct snd_ctl_elem_value *uncontrol);
 313int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
 314        struct snd_ctl_elem_value *uncontrol);
 315int snd_soc_dapm_new_control(struct snd_soc_codec *codec,
 316        const struct snd_soc_dapm_widget *widget);
 317int snd_soc_dapm_new_controls(struct snd_soc_codec *codec,
 318        const struct snd_soc_dapm_widget *widget,
 319        int num);
 320
 321/* dapm path setup */
 322int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec);
 323void snd_soc_dapm_free(struct snd_soc_device *socdev);
 324int snd_soc_dapm_add_routes(struct snd_soc_codec *codec,
 325                            const struct snd_soc_dapm_route *route, int num);
 326
 327/* dapm events */
 328int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, char *stream,
 329        int event);
 330void snd_soc_dapm_shutdown(struct snd_soc_device *socdev);
 331
 332/* dapm sys fs - used by the core */
 333int snd_soc_dapm_sys_add(struct device *dev);
 334void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec);
 335
 336/* dapm audio pin control and status */
 337int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin);
 338int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, const char *pin);
 339int snd_soc_dapm_nc_pin(struct snd_soc_codec *codec, const char *pin);
 340int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, const char *pin);
 341int snd_soc_dapm_sync(struct snd_soc_codec *codec);
 342int snd_soc_dapm_force_enable_pin(struct snd_soc_codec *codec,
 343                                  const char *pin);
 344int snd_soc_dapm_ignore_suspend(struct snd_soc_codec *codec, const char *pin);
 345
 346/* dapm widget types */
 347enum snd_soc_dapm_type {
 348        snd_soc_dapm_input = 0,         /* input pin */
 349        snd_soc_dapm_output,            /* output pin */
 350        snd_soc_dapm_mux,                       /* selects 1 analog signal from many inputs */
 351        snd_soc_dapm_value_mux,                 /* selects 1 analog signal from many inputs */
 352        snd_soc_dapm_mixer,                     /* mixes several analog signals together */
 353        snd_soc_dapm_mixer_named_ctl,           /* mixer with named controls */
 354        snd_soc_dapm_pga,                       /* programmable gain/attenuation (volume) */
 355        snd_soc_dapm_adc,                       /* analog to digital converter */
 356        snd_soc_dapm_dac,                       /* digital to analog converter */
 357        snd_soc_dapm_micbias,           /* microphone bias (power) */
 358        snd_soc_dapm_mic,                       /* microphone */
 359        snd_soc_dapm_hp,                        /* headphones */
 360        snd_soc_dapm_spk,                       /* speaker */
 361        snd_soc_dapm_line,                      /* line input/output */
 362        snd_soc_dapm_switch,            /* analog switch */
 363        snd_soc_dapm_vmid,                      /* codec bias/vmid - to minimise pops */
 364        snd_soc_dapm_pre,                       /* machine specific pre widget - exec first */
 365        snd_soc_dapm_post,                      /* machine specific post widget - exec last */
 366        snd_soc_dapm_supply,            /* power/clock supply */
 367        snd_soc_dapm_aif_in,            /* audio interface input */
 368        snd_soc_dapm_aif_out,           /* audio interface output */
 369};
 370
 371/*
 372 * DAPM audio route definition.
 373 *
 374 * Defines an audio route originating at source via control and finishing
 375 * at sink.
 376 */
 377struct snd_soc_dapm_route {
 378        const char *sink;
 379        const char *control;
 380        const char *source;
 381
 382        /* Note: currently only supported for links where source is a supply */
 383        int (*connected)(struct snd_soc_dapm_widget *source,
 384                         struct snd_soc_dapm_widget *sink);
 385};
 386
 387/* dapm audio path between two widgets */
 388struct snd_soc_dapm_path {
 389        char *name;
 390        char *long_name;
 391
 392        /* source (input) and sink (output) widgets */
 393        struct snd_soc_dapm_widget *source;
 394        struct snd_soc_dapm_widget *sink;
 395        struct snd_kcontrol *kcontrol;
 396
 397        /* status */
 398        u32 connect:1;  /* source and sink widgets are connected */
 399        u32 walked:1;   /* path has been walked */
 400
 401        int (*connected)(struct snd_soc_dapm_widget *source,
 402                         struct snd_soc_dapm_widget *sink);
 403
 404        struct list_head list_source;
 405        struct list_head list_sink;
 406        struct list_head list;
 407};
 408
 409/* dapm widget */
 410struct snd_soc_dapm_widget {
 411        enum snd_soc_dapm_type id;
 412        char *name;             /* widget name */
 413        char *sname;    /* stream name */
 414        struct snd_soc_codec *codec;
 415        struct list_head list;
 416
 417        /* dapm control */
 418        short reg;                                              /* negative reg = no direct dapm */
 419        unsigned char shift;                    /* bits to shift */
 420        unsigned int saved_value;               /* widget saved value */
 421        unsigned int value;                             /* widget current value */
 422        unsigned int mask;                      /* non-shifted mask */
 423        unsigned int on_val;                    /* on state value */
 424        unsigned int off_val;                   /* off state value */
 425        unsigned char power:1;                  /* block power status */
 426        unsigned char invert:1;                 /* invert the power bit */
 427        unsigned char active:1;                 /* active stream on DAC, ADC's */
 428        unsigned char connected:1;              /* connected codec pin */
 429        unsigned char new:1;                    /* cnew complete */
 430        unsigned char ext:1;                    /* has external widgets */
 431        unsigned char force:1;                  /* force state */
 432        unsigned char ignore_suspend:1;         /* kept enabled over suspend */
 433
 434        int (*power_check)(struct snd_soc_dapm_widget *w);
 435
 436        /* external events */
 437        unsigned short event_flags;             /* flags to specify event types */
 438        int (*event)(struct snd_soc_dapm_widget*, struct snd_kcontrol *, int);
 439
 440        /* kcontrols that relate to this widget */
 441        int num_kcontrols;
 442        const struct snd_kcontrol_new *kcontrols;
 443
 444        /* widget input and outputs */
 445        struct list_head sources;
 446        struct list_head sinks;
 447
 448        /* used during DAPM updates */
 449        struct list_head power_list;
 450};
 451
 452#endif
 453
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