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/types.h>
  17#include <sound/control.h>
  18
  19struct device;
  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 up to 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, .kcontrol_news = NULL, \
  44        .num_kcontrols = 0}
  45
  46/* platform domain */
  47#define SND_SOC_DAPM_SIGGEN(wname) \
  48{       .id = snd_soc_dapm_siggen, .name = wname, .kcontrol_news = NULL, \
  49        .num_kcontrols = 0, .reg = SND_SOC_NOPM }
  50#define SND_SOC_DAPM_INPUT(wname) \
  51{       .id = snd_soc_dapm_input, .name = wname, .kcontrol_news = NULL, \
  52        .num_kcontrols = 0, .reg = SND_SOC_NOPM }
  53#define SND_SOC_DAPM_OUTPUT(wname) \
  54{       .id = snd_soc_dapm_output, .name = wname, .kcontrol_news = NULL, \
  55        .num_kcontrols = 0, .reg = SND_SOC_NOPM }
  56#define SND_SOC_DAPM_MIC(wname, wevent) \
  57{       .id = snd_soc_dapm_mic, .name = wname, .kcontrol_news = NULL, \
  58        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
  59        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
  60#define SND_SOC_DAPM_HP(wname, wevent) \
  61{       .id = snd_soc_dapm_hp, .name = wname, .kcontrol_news = NULL, \
  62        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
  63        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  64#define SND_SOC_DAPM_SPK(wname, wevent) \
  65{       .id = snd_soc_dapm_spk, .name = wname, .kcontrol_news = NULL, \
  66        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
  67        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  68#define SND_SOC_DAPM_LINE(wname, wevent) \
  69{       .id = snd_soc_dapm_line, .name = wname, .kcontrol_news = NULL, \
  70        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
  71        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD}
  72
  73/* path domain */
  74#define SND_SOC_DAPM_PGA(wname, wreg, wshift, winvert,\
  75         wcontrols, wncontrols) \
  76{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
  77        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols}
  78#define SND_SOC_DAPM_OUT_DRV(wname, wreg, wshift, winvert,\
  79         wcontrols, wncontrols) \
  80{       .id = snd_soc_dapm_out_drv, .name = wname, .reg = wreg, .shift = wshift, \
  81        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols}
  82#define SND_SOC_DAPM_MIXER(wname, wreg, wshift, winvert, \
  83         wcontrols, wncontrols)\
  84{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
  85        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols}
  86#define SND_SOC_DAPM_MIXER_NAMED_CTL(wname, wreg, wshift, winvert, \
  87         wcontrols, wncontrols)\
  88{       .id = snd_soc_dapm_mixer_named_ctl, .name = wname, .reg = wreg, \
  89        .shift = wshift, .invert = winvert, .kcontrol_news = wcontrols, \
  90        .num_kcontrols = wncontrols}
  91#define SND_SOC_DAPM_MICBIAS(wname, wreg, wshift, winvert) \
  92{       .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
  93        .invert = winvert, .kcontrol_news = NULL, .num_kcontrols = 0}
  94#define SND_SOC_DAPM_SWITCH(wname, wreg, wshift, winvert, wcontrols) \
  95{       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
  96        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1}
  97#define SND_SOC_DAPM_MUX(wname, wreg, wshift, winvert, wcontrols) \
  98{       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
  99        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1}
 100#define SND_SOC_DAPM_VIRT_MUX(wname, wreg, wshift, winvert, wcontrols) \
 101{       .id = snd_soc_dapm_virt_mux, .name = wname, .reg = wreg, .shift = wshift, \
 102        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1}
 103#define SND_SOC_DAPM_VALUE_MUX(wname, wreg, wshift, winvert, wcontrols) \
 104{       .id = snd_soc_dapm_value_mux, .name = wname, .reg = wreg, \
 105        .shift = wshift, .invert = winvert, .kcontrol_news = wcontrols, \
 106        .num_kcontrols = 1}
 107
 108/* Simplified versions of above macros, assuming wncontrols = ARRAY_SIZE(wcontrols) */
 109#define SOC_PGA_ARRAY(wname, wreg, wshift, winvert,\
 110         wcontrols) \
 111{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 112        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols)}
 113#define SOC_MIXER_ARRAY(wname, wreg, wshift, winvert, \
 114         wcontrols)\
 115{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 116        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols)}
 117#define SOC_MIXER_NAMED_CTL_ARRAY(wname, wreg, wshift, winvert, \
 118         wcontrols)\
 119{       .id = snd_soc_dapm_mixer_named_ctl, .name = wname, .reg = wreg, \
 120        .shift = wshift, .invert = winvert, .kcontrol_news = wcontrols, \
 121        .num_kcontrols = ARRAY_SIZE(wcontrols)}
 122
 123/* path domain with event - event handler must return 0 for success */
 124#define SND_SOC_DAPM_PGA_E(wname, wreg, wshift, winvert, wcontrols, \
 125        wncontrols, wevent, wflags) \
 126{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 127        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols, \
 128        .event = wevent, .event_flags = wflags}
 129#define SND_SOC_DAPM_OUT_DRV_E(wname, wreg, wshift, winvert, wcontrols, \
 130        wncontrols, wevent, wflags) \
 131{       .id = snd_soc_dapm_out_drv, .name = wname, .reg = wreg, .shift = wshift, \
 132        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols, \
 133        .event = wevent, .event_flags = wflags}
 134#define SND_SOC_DAPM_MIXER_E(wname, wreg, wshift, winvert, wcontrols, \
 135        wncontrols, wevent, wflags) \
 136{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 137        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = wncontrols, \
 138        .event = wevent, .event_flags = wflags}
 139#define SND_SOC_DAPM_MIXER_NAMED_CTL_E(wname, wreg, wshift, winvert, \
 140        wcontrols, wncontrols, wevent, wflags) \
 141{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 142        .invert = winvert, .kcontrol_news = wcontrols, \
 143        .num_kcontrols = wncontrols, .event = wevent, .event_flags = wflags}
 144#define SND_SOC_DAPM_SWITCH_E(wname, wreg, wshift, winvert, wcontrols, \
 145        wevent, wflags) \
 146{       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
 147        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1, \
 148        .event = wevent, .event_flags = wflags}
 149#define SND_SOC_DAPM_MUX_E(wname, wreg, wshift, winvert, wcontrols, \
 150        wevent, wflags) \
 151{       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
 152        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1, \
 153        .event = wevent, .event_flags = wflags}
 154#define SND_SOC_DAPM_VIRT_MUX_E(wname, wreg, wshift, winvert, wcontrols, \
 155        wevent, wflags) \
 156{       .id = snd_soc_dapm_virt_mux, .name = wname, .reg = wreg, .shift = wshift, \
 157        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = 1, \
 158        .event = wevent, .event_flags = wflags}
 159
 160/* additional sequencing control within an event type */
 161#define SND_SOC_DAPM_PGA_S(wname, wsubseq, wreg, wshift, winvert, \
 162        wevent, wflags) \
 163{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 164        .invert = winvert, .event = wevent, .event_flags = wflags, \
 165        .subseq = wsubseq}
 166#define SND_SOC_DAPM_SUPPLY_S(wname, wsubseq, wreg, wshift, winvert, wevent, \
 167        wflags) \
 168{       .id = snd_soc_dapm_supply, .name = wname, .reg = wreg,  \
 169        .shift = wshift, .invert = winvert, .event = wevent, \
 170        .event_flags = wflags, .subseq = wsubseq}
 171
 172/* Simplified versions of above macros, assuming wncontrols = ARRAY_SIZE(wcontrols) */
 173#define SOC_PGA_E_ARRAY(wname, wreg, wshift, winvert, wcontrols, \
 174        wevent, wflags) \
 175{       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
 176        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols), \
 177        .event = wevent, .event_flags = wflags}
 178#define SOC_MIXER_E_ARRAY(wname, wreg, wshift, winvert, wcontrols, \
 179        wevent, wflags) \
 180{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 181        .invert = winvert, .kcontrol_news = wcontrols, .num_kcontrols = ARRAY_SIZE(wcontrols), \
 182        .event = wevent, .event_flags = wflags}
 183#define SOC_MIXER_NAMED_CTL_E_ARRAY(wname, wreg, wshift, winvert, \
 184        wcontrols, wevent, wflags) \
 185{       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
 186        .invert = winvert, .kcontrol_news = wcontrols, \
 187        .num_kcontrols = ARRAY_SIZE(wcontrols), .event = wevent, .event_flags = wflags}
 188
 189/* events that are pre and post DAPM */
 190#define SND_SOC_DAPM_PRE(wname, wevent) \
 191{       .id = snd_soc_dapm_pre, .name = wname, .kcontrol_news = NULL, \
 192        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
 193        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD}
 194#define SND_SOC_DAPM_POST(wname, wevent) \
 195{       .id = snd_soc_dapm_post, .name = wname, .kcontrol_news = NULL, \
 196        .num_kcontrols = 0, .reg = SND_SOC_NOPM, .event = wevent, \
 197        .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD}
 198
 199/* stream domain */
 200#define SND_SOC_DAPM_AIF_IN(wname, stname, wslot, wreg, wshift, winvert) \
 201{       .id = snd_soc_dapm_aif_in, .name = wname, .sname = stname, \
 202        .reg = wreg, .shift = wshift, .invert = winvert }
 203#define SND_SOC_DAPM_AIF_IN_E(wname, stname, wslot, wreg, wshift, winvert, \
 204                              wevent, wflags)                           \
 205{       .id = snd_soc_dapm_aif_in, .name = wname, .sname = stname, \
 206        .reg = wreg, .shift = wshift, .invert = winvert, \
 207        .event = wevent, .event_flags = wflags }
 208#define SND_SOC_DAPM_AIF_OUT(wname, stname, wslot, wreg, wshift, winvert) \
 209{       .id = snd_soc_dapm_aif_out, .name = wname, .sname = stname, \
 210        .reg = wreg, .shift = wshift, .invert = winvert }
 211#define SND_SOC_DAPM_AIF_OUT_E(wname, stname, wslot, wreg, wshift, winvert, \
 212                             wevent, wflags)                            \
 213{       .id = snd_soc_dapm_aif_out, .name = wname, .sname = stname, \
 214        .reg = wreg, .shift = wshift, .invert = winvert, \
 215        .event = wevent, .event_flags = wflags }
 216#define SND_SOC_DAPM_DAC(wname, stname, wreg, wshift, winvert) \
 217{       .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
 218        .shift = wshift, .invert = winvert}
 219#define SND_SOC_DAPM_DAC_E(wname, stname, wreg, wshift, winvert, \
 220                           wevent, wflags)                              \
 221{       .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
 222        .shift = wshift, .invert = winvert, \
 223        .event = wevent, .event_flags = wflags}
 224#define SND_SOC_DAPM_ADC(wname, stname, wreg, wshift, winvert) \
 225{       .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
 226        .shift = wshift, .invert = winvert}
 227#define SND_SOC_DAPM_ADC_E(wname, stname, wreg, wshift, winvert, \
 228                           wevent, wflags)                              \
 229{       .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
 230        .shift = wshift, .invert = winvert, \
 231        .event = wevent, .event_flags = wflags}
 232#define SND_SOC_DAPM_CLOCK_SUPPLY(wname) \
 233{       .id = snd_soc_dapm_clock_supply, .name = wname, \
 234        .reg = SND_SOC_NOPM, .event = dapm_clock_event, \
 235        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD }
 236
 237/* generic widgets */
 238#define SND_SOC_DAPM_REG(wid, wname, wreg, wshift, wmask, won_val, woff_val) \
 239{       .id = wid, .name = wname, .kcontrol_news = NULL, .num_kcontrols = 0, \
 240        .reg = -((wreg) + 1), .shift = wshift, .mask = wmask, \
 241        .on_val = won_val, .off_val = woff_val, .event = dapm_reg_event, \
 242        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
 243#define SND_SOC_DAPM_SUPPLY(wname, wreg, wshift, winvert, wevent, wflags) \
 244{       .id = snd_soc_dapm_supply, .name = wname, .reg = wreg,  \
 245        .shift = wshift, .invert = winvert, .event = wevent, \
 246        .event_flags = wflags}
 247#define SND_SOC_DAPM_REGULATOR_SUPPLY(wname, wdelay) \
 248{       .id = snd_soc_dapm_regulator_supply, .name = wname, \
 249        .reg = SND_SOC_NOPM, .shift = wdelay, .event = dapm_regulator_event, \
 250        .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD }
 251
 252
 253/* dapm kcontrol types */
 254#define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \
 255{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 256        .info = snd_soc_info_volsw, \
 257        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 258        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 259#define SOC_DAPM_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 260{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 261        .info = snd_soc_info_volsw, \
 262        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 263        .tlv.p = (tlv_array), \
 264        .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 265        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 266#define SOC_DAPM_ENUM(xname, xenum) \
 267{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 268        .info = snd_soc_info_enum_double, \
 269        .get = snd_soc_dapm_get_enum_double, \
 270        .put = snd_soc_dapm_put_enum_double, \
 271        .private_value = (unsigned long)&xenum }
 272#define SOC_DAPM_ENUM_VIRT(xname, xenum)                    \
 273{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 274        .info = snd_soc_info_enum_double, \
 275        .get = snd_soc_dapm_get_enum_virt, \
 276        .put = snd_soc_dapm_put_enum_virt, \
 277        .private_value = (unsigned long)&xenum }
 278#define SOC_DAPM_ENUM_EXT(xname, xenum, xget, xput) \
 279{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 280        .info = snd_soc_info_enum_double, \
 281        .get = xget, \
 282        .put = xput, \
 283        .private_value = (unsigned long)&xenum }
 284#define SOC_DAPM_VALUE_ENUM(xname, xenum) \
 285{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 286        .info = snd_soc_info_enum_double, \
 287        .get = snd_soc_dapm_get_value_enum_double, \
 288        .put = snd_soc_dapm_put_value_enum_double, \
 289        .private_value = (unsigned long)&xenum }
 290#define SOC_DAPM_PIN_SWITCH(xname) \
 291{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname " Switch", \
 292        .info = snd_soc_dapm_info_pin_switch, \
 293        .get = snd_soc_dapm_get_pin_switch, \
 294        .put = snd_soc_dapm_put_pin_switch, \
 295        .private_value = (unsigned long)xname }
 296
 297/* dapm stream operations */
 298#define SND_SOC_DAPM_STREAM_NOP                 0x0
 299#define SND_SOC_DAPM_STREAM_START               0x1
 300#define SND_SOC_DAPM_STREAM_STOP                0x2
 301#define SND_SOC_DAPM_STREAM_SUSPEND             0x4
 302#define SND_SOC_DAPM_STREAM_RESUME              0x8
 303#define SND_SOC_DAPM_STREAM_PAUSE_PUSH  0x10
 304#define SND_SOC_DAPM_STREAM_PAUSE_RELEASE       0x20
 305
 306/* dapm event types */
 307#define SND_SOC_DAPM_PRE_PMU    0x1     /* before widget power up */
 308#define SND_SOC_DAPM_POST_PMU   0x2             /* after widget power up */
 309#define SND_SOC_DAPM_PRE_PMD    0x4     /* before widget power down */
 310#define SND_SOC_DAPM_POST_PMD   0x8             /* after widget power down */
 311#define SND_SOC_DAPM_PRE_REG    0x10    /* before audio path setup */
 312#define SND_SOC_DAPM_POST_REG   0x20    /* after audio path setup */
 313#define SND_SOC_DAPM_PRE_POST_PMD \
 314                                (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD)
 315
 316/* convenience event type detection */
 317#define SND_SOC_DAPM_EVENT_ON(e)        \
 318        (e & (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU))
 319#define SND_SOC_DAPM_EVENT_OFF(e)       \
 320        (e & (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD))
 321
 322struct snd_soc_dapm_widget;
 323enum snd_soc_dapm_type;
 324struct snd_soc_dapm_path;
 325struct snd_soc_dapm_pin;
 326struct snd_soc_dapm_route;
 327struct snd_soc_dapm_context;
 328struct regulator;
 329struct snd_soc_dapm_widget_list;
 330
 331int dapm_reg_event(struct snd_soc_dapm_widget *w,
 332                   struct snd_kcontrol *kcontrol, int event);
 333int dapm_regulator_event(struct snd_soc_dapm_widget *w,
 334                         struct snd_kcontrol *kcontrol, int event);
 335int dapm_clock_event(struct snd_soc_dapm_widget *w,
 336                         struct snd_kcontrol *kcontrol, int event);
 337
 338/* dapm controls */
 339int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
 340        struct snd_ctl_elem_value *ucontrol);
 341int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
 342        struct snd_ctl_elem_value *ucontrol);
 343int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 344        struct snd_ctl_elem_value *ucontrol);
 345int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 346        struct snd_ctl_elem_value *ucontrol);
 347int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
 348        struct snd_ctl_elem_value *ucontrol);
 349int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
 350        struct snd_ctl_elem_value *ucontrol);
 351int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
 352        struct snd_ctl_elem_value *ucontrol);
 353int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
 354        struct snd_ctl_elem_value *ucontrol);
 355int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
 356        struct snd_ctl_elem_info *uinfo);
 357int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
 358        struct snd_ctl_elem_value *uncontrol);
 359int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
 360        struct snd_ctl_elem_value *uncontrol);
 361int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
 362        const struct snd_soc_dapm_widget *widget,
 363        int num);
 364int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
 365                                 struct snd_soc_dai *dai);
 366int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card);
 367int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
 368                         const struct snd_soc_pcm_stream *params,
 369                         struct snd_soc_dapm_widget *source,
 370                         struct snd_soc_dapm_widget *sink);
 371
 372/* dapm path setup */
 373int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm);
 374void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm);
 375int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
 376                            const struct snd_soc_dapm_route *route, int num);
 377int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
 378                            const struct snd_soc_dapm_route *route, int num);
 379int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
 380                             const struct snd_soc_dapm_route *route, int num);
 381
 382/* dapm events */
 383void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
 384        int event);
 385void snd_soc_dapm_shutdown(struct snd_soc_card *card);
 386
 387/* external DAPM widget events */
 388int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
 389                struct snd_kcontrol *kcontrol, int connect);
 390int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
 391                                 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e);
 392
 393/* dapm sys fs - used by the core */
 394int snd_soc_dapm_sys_add(struct device *dev);
 395void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
 396                                struct dentry *parent);
 397
 398/* dapm audio pin control and status */
 399int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm,
 400                            const char *pin);
 401int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
 402                             const char *pin);
 403int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin);
 404int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
 405                                const char *pin);
 406int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm);
 407int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
 408                                  const char *pin);
 409int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
 410                                const char *pin);
 411void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec);
 412
 413/* Mostly internal - should not normally be used */
 414void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason);
 415
 416/* dapm path query */
 417int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
 418        struct snd_soc_dapm_widget_list **list);
 419
 420/* dapm widget types */
 421enum snd_soc_dapm_type {
 422        snd_soc_dapm_input = 0,         /* input pin */
 423        snd_soc_dapm_output,            /* output pin */
 424        snd_soc_dapm_mux,                       /* selects 1 analog signal from many inputs */
 425        snd_soc_dapm_virt_mux,                  /* virtual version of snd_soc_dapm_mux */
 426        snd_soc_dapm_value_mux,                 /* selects 1 analog signal from many inputs */
 427        snd_soc_dapm_mixer,                     /* mixes several analog signals together */
 428        snd_soc_dapm_mixer_named_ctl,           /* mixer with named controls */
 429        snd_soc_dapm_pga,                       /* programmable gain/attenuation (volume) */
 430        snd_soc_dapm_out_drv,                   /* output driver */
 431        snd_soc_dapm_adc,                       /* analog to digital converter */
 432        snd_soc_dapm_dac,                       /* digital to analog converter */
 433        snd_soc_dapm_micbias,           /* microphone bias (power) */
 434        snd_soc_dapm_mic,                       /* microphone */
 435        snd_soc_dapm_hp,                        /* headphones */
 436        snd_soc_dapm_spk,                       /* speaker */
 437        snd_soc_dapm_line,                      /* line input/output */
 438        snd_soc_dapm_switch,            /* analog switch */
 439        snd_soc_dapm_vmid,                      /* codec bias/vmid - to minimise pops */
 440        snd_soc_dapm_pre,                       /* machine specific pre widget - exec first */
 441        snd_soc_dapm_post,                      /* machine specific post widget - exec last */
 442        snd_soc_dapm_supply,            /* power/clock supply */
 443        snd_soc_dapm_regulator_supply,  /* external regulator */
 444        snd_soc_dapm_clock_supply,      /* external clock */
 445        snd_soc_dapm_aif_in,            /* audio interface input */
 446        snd_soc_dapm_aif_out,           /* audio interface output */
 447        snd_soc_dapm_siggen,            /* signal generator */
 448        snd_soc_dapm_dai,               /* link to DAI structure */
 449        snd_soc_dapm_dai_link,          /* link between two DAI structures */
 450};
 451
 452enum snd_soc_dapm_subclass {
 453        SND_SOC_DAPM_CLASS_INIT         = 0,
 454        SND_SOC_DAPM_CLASS_RUNTIME      = 1,
 455};
 456
 457/*
 458 * DAPM audio route definition.
 459 *
 460 * Defines an audio route originating at source via control and finishing
 461 * at sink.
 462 */
 463struct snd_soc_dapm_route {
 464        const char *sink;
 465        const char *control;
 466        const char *source;
 467
 468        /* Note: currently only supported for links where source is a supply */
 469        int (*connected)(struct snd_soc_dapm_widget *source,
 470                         struct snd_soc_dapm_widget *sink);
 471};
 472
 473/* dapm audio path between two widgets */
 474struct snd_soc_dapm_path {
 475        const char *name;
 476        const char *long_name;
 477
 478        /* source (input) and sink (output) widgets */
 479        struct snd_soc_dapm_widget *source;
 480        struct snd_soc_dapm_widget *sink;
 481        struct snd_kcontrol *kcontrol;
 482
 483        /* status */
 484        u32 connect:1;  /* source and sink widgets are connected */
 485        u32 walked:1;   /* path has been walked */
 486        u32 weak:1;     /* path ignored for power management */
 487
 488        int (*connected)(struct snd_soc_dapm_widget *source,
 489                         struct snd_soc_dapm_widget *sink);
 490
 491        struct list_head list_source;
 492        struct list_head list_sink;
 493        struct list_head list;
 494};
 495
 496/* dapm widget */
 497struct snd_soc_dapm_widget {
 498        enum snd_soc_dapm_type id;
 499        const char *name;               /* widget name */
 500        const char *sname;      /* stream name */
 501        struct snd_soc_codec *codec;
 502        struct snd_soc_platform *platform;
 503        struct list_head list;
 504        struct snd_soc_dapm_context *dapm;
 505
 506        void *priv;                             /* widget specific data */
 507        struct regulator *regulator;            /* attached regulator */
 508        const struct snd_soc_pcm_stream *params; /* params for dai links */
 509
 510        /* dapm control */
 511        int reg;                                /* negative reg = no direct dapm */
 512        unsigned char shift;                    /* bits to shift */
 513        unsigned int saved_value;               /* widget saved value */
 514        unsigned int value;                             /* widget current value */
 515        unsigned int mask;                      /* non-shifted mask */
 516        unsigned int on_val;                    /* on state value */
 517        unsigned int off_val;                   /* off state value */
 518        unsigned char power:1;                  /* block power status */
 519        unsigned char invert:1;                 /* invert the power bit */
 520        unsigned char active:1;                 /* active stream on DAC, ADC's */
 521        unsigned char connected:1;              /* connected codec pin */
 522        unsigned char new:1;                    /* cnew complete */
 523        unsigned char ext:1;                    /* has external widgets */
 524        unsigned char force:1;                  /* force state */
 525        unsigned char ignore_suspend:1;         /* kept enabled over suspend */
 526        unsigned char new_power:1;              /* power from this run */
 527        unsigned char power_checked:1;          /* power checked this run */
 528        int subseq;                             /* sort within widget type */
 529
 530        int (*power_check)(struct snd_soc_dapm_widget *w);
 531
 532        /* external events */
 533        unsigned short event_flags;             /* flags to specify event types */
 534        int (*event)(struct snd_soc_dapm_widget*, struct snd_kcontrol *, int);
 535
 536        /* kcontrols that relate to this widget */
 537        int num_kcontrols;
 538        const struct snd_kcontrol_new *kcontrol_news;
 539        struct snd_kcontrol **kcontrols;
 540
 541        /* widget input and outputs */
 542        struct list_head sources;
 543        struct list_head sinks;
 544
 545        /* used during DAPM updates */
 546        struct list_head power_list;
 547        struct list_head dirty;
 548        int inputs;
 549        int outputs;
 550
 551        struct clk *clk;
 552};
 553
 554struct snd_soc_dapm_update {
 555        struct snd_soc_dapm_widget *widget;
 556        struct snd_kcontrol *kcontrol;
 557        int reg;
 558        int mask;
 559        int val;
 560};
 561
 562/* DAPM context */
 563struct snd_soc_dapm_context {
 564        int n_widgets; /* number of widgets in this context */
 565        enum snd_soc_bias_level bias_level;
 566        enum snd_soc_bias_level suspend_bias_level;
 567        struct delayed_work delayed_work;
 568        unsigned int idle_bias_off:1; /* Use BIAS_OFF instead of STANDBY */
 569
 570        struct snd_soc_dapm_update *update;
 571
 572        void (*seq_notifier)(struct snd_soc_dapm_context *,
 573                             enum snd_soc_dapm_type, int);
 574
 575        struct device *dev; /* from parent - for debug */
 576        struct snd_soc_codec *codec; /* parent codec */
 577        struct snd_soc_platform *platform; /* parent platform */
 578        struct snd_soc_card *card; /* parent card */
 579
 580        /* used during DAPM updates */
 581        enum snd_soc_bias_level target_bias_level;
 582        struct list_head list;
 583
 584        int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
 585
 586#ifdef CONFIG_DEBUG_FS
 587        struct dentry *debugfs_dapm;
 588#endif
 589};
 590
 591/* A list of widgets associated with an object, typically a snd_kcontrol */
 592struct snd_soc_dapm_widget_list {
 593        int num_widgets;
 594        struct snd_soc_dapm_widget *widgets[0];
 595};
 596
 597struct snd_soc_dapm_stats {
 598        int power_checks;
 599        int path_checks;
 600        int neighbour_checks;
 601};
 602
 603#endif
 604
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