include/sound/soc-dapm.h

   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 managment
  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_MICBIAS(wname, wreg, wshift, winvert) \
  80 {       .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
  81         .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0}
  82 #define SND_SOC_DAPM_SWITCH(wname, wreg, wshift, winvert, wcontrols) \
  83 {       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
  84         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
  85 #define SND_SOC_DAPM_MUX(wname, wreg, wshift, winvert, wcontrols) \
  86 {       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
  87         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1}
  88
  89 /* path domain with event - event handler must return 0 for success */
  90 #define SND_SOC_DAPM_PGA_E(wname, wreg, wshift, winvert, wcontrols, \
  91         wncontrols, wevent, wflags) \
  92 {       .id = snd_soc_dapm_pga, .name = wname, .reg = wreg, .shift = wshift, \
  93         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
  94         .event = wevent, .event_flags = wflags}
  95 #define SND_SOC_DAPM_MIXER_E(wname, wreg, wshift, winvert, wcontrols, \
  96         wncontrols, wevent, wflags) \
  97 {       .id = snd_soc_dapm_mixer, .name = wname, .reg = wreg, .shift = wshift, \
  98         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = wncontrols, \
  99         .event = wevent, .event_flags = wflags}
 100 #define SND_SOC_DAPM_MICBIAS_E(wname, wreg, wshift, winvert, wevent, wflags) \
 101 {       .id = snd_soc_dapm_micbias, .name = wname, .reg = wreg, .shift = wshift, \
 102         .invert = winvert, .kcontrols = NULL, .num_kcontrols = 0, \
 103         .event = wevent, .event_flags = wflags}
 104 #define SND_SOC_DAPM_SWITCH_E(wname, wreg, wshift, winvert, wcontrols, \
 105         wevent, wflags) \
 106 {       .id = snd_soc_dapm_switch, .name = wname, .reg = wreg, .shift = wshift, \
 107         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1 \
 108         .event = wevent, .event_flags = wflags}
 109 #define SND_SOC_DAPM_MUX_E(wname, wreg, wshift, winvert, wcontrols, \
 110         wevent, wflags) \
 111 {       .id = snd_soc_dapm_mux, .name = wname, .reg = wreg, .shift = wshift, \
 112         .invert = winvert, .kcontrols = wcontrols, .num_kcontrols = 1, \
 113         .event = wevent, .event_flags = wflags}
 114
 115 /* events that are pre and post DAPM */
 116 #define SND_SOC_DAPM_PRE(wname, wevent) \
 117 {       .id = snd_soc_dapm_pre, .name = wname, .kcontrols = NULL, \
 118         .num_kcontrols = 0, .event = wevent, \
 119         .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD}
 120 #define SND_SOC_DAPM_POST(wname, wevent) \
 121 {       .id = snd_soc_dapm_post, .name = wname, .kcontrols = NULL, \
 122         .num_kcontrols = 0, .event = wevent, \
 123         .event_flags = SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD}
 124
 125 /* stream domain */
 126 #define SND_SOC_DAPM_DAC(wname, stname, wreg, wshift, winvert) \
 127 {       .id = snd_soc_dapm_dac, .name = wname, .sname = stname, .reg = wreg, \
 128         .shift = wshift, .invert = winvert}
 129 #define SND_SOC_DAPM_ADC(wname, stname, wreg, wshift, winvert) \
 130 {       .id = snd_soc_dapm_adc, .name = wname, .sname = stname, .reg = wreg, \
 131         .shift = wshift, .invert = winvert}
 132
 133 /* dapm kcontrol types */
 134 #define SOC_DAPM_SINGLE(xname, reg, shift, mask, invert) \
 135 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 136         .info = snd_soc_info_volsw, \
 137         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 138         .private_value =  SOC_SINGLE_VALUE(reg, shift, mask, invert) }
 139 #define SOC_DAPM_DOUBLE(xname, reg, shift_left, shift_right, mask, invert, \
 140         power) \
 141 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 142         .info = snd_soc_info_volsw, \
 143         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 144         .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
 145                  ((mask) << 16) | ((invert) << 24) }
 146 #define SOC_DAPM_ENUM(xname, xenum) \
 147 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 148         .info = snd_soc_info_enum_double, \
 149         .get = snd_soc_dapm_get_enum_double, \
 150         .put = snd_soc_dapm_put_enum_double, \
 151         .private_value = (unsigned long)&xenum }
 152
 153 /* dapm stream operations */
 154 #define SND_SOC_DAPM_STREAM_NOP                 0x0
 155 #define SND_SOC_DAPM_STREAM_START               0x1
 156 #define SND_SOC_DAPM_STREAM_STOP                0x2
 157 #define SND_SOC_DAPM_STREAM_SUSPEND             0x4
 158 #define SND_SOC_DAPM_STREAM_RESUME              0x8
 159 #define SND_SOC_DAPM_STREAM_PAUSE_PUSH  0x10
 160 #define SND_SOC_DAPM_STREAM_PAUSE_RELEASE       0x20
 161
 162 /* dapm event types */
 163 #define SND_SOC_DAPM_PRE_PMU    0x1     /* before widget power up */
 164 #define SND_SOC_DAPM_POST_PMU   0x2             /* after widget power up */
 165 #define SND_SOC_DAPM_PRE_PMD    0x4     /* before widget power down */
 166 #define SND_SOC_DAPM_POST_PMD   0x8             /* after widget power down */
 167 #define SND_SOC_DAPM_PRE_REG    0x10    /* before audio path setup */
 168 #define SND_SOC_DAPM_POST_REG   0x20    /* after audio path setup */
 169
 170 /* convenience event type detection */
 171 #define SND_SOC_DAPM_EVENT_ON(e)        \
 172         (e & (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU))
 173 #define SND_SOC_DAPM_EVENT_OFF(e)       \
 174         (e & (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD))
 175
 176 struct snd_soc_dapm_widget;
 177 enum snd_soc_dapm_type;
 178 struct snd_soc_dapm_path;
 179 struct snd_soc_dapm_pin;
 180
 181 /* dapm controls */
 182 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
 183         struct snd_ctl_elem_value *ucontrol);
 184 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
 185         struct snd_ctl_elem_value *ucontrol);
 186 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 187         struct snd_ctl_elem_value *ucontrol);
 188 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 189         struct snd_ctl_elem_value *ucontrol);
 190 int snd_soc_dapm_new_control(struct snd_soc_codec *codec,
 191         const struct snd_soc_dapm_widget *widget);
 192
 193 /* dapm path setup */
 194 int snd_soc_dapm_connect_input(struct snd_soc_codec *codec,
 195         const char *sink_name, const char *control_name, const char *src_name);
 196 int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec);
 197 void snd_soc_dapm_free(struct snd_soc_device *socdev);
 198
 199 /* dapm events */
 200 int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, char *stream,
 201         int event);
 202
 203 /* dapm sys fs - used by the core */
 204 int snd_soc_dapm_sys_add(struct device *dev);
 205
 206 /* dapm audio endpoint control */
 207 int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
 208         char *pin, int status);
 209 int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec);
 210
 211 /* dapm widget types */
 212 enum snd_soc_dapm_type {
 213         snd_soc_dapm_input = 0,         /* input pin */
 214         snd_soc_dapm_output,            /* output pin */
 215         snd_soc_dapm_mux,                       /* selects 1 analog signal from many inputs */
 216         snd_soc_dapm_mixer,                     /* mixes several analog signals together */
 217         snd_soc_dapm_pga,                       /* programmable gain/attenuation (volume) */
 218         snd_soc_dapm_adc,                       /* analog to digital converter */
 219         snd_soc_dapm_dac,                       /* digital to analog converter */
 220         snd_soc_dapm_micbias,           /* microphone bias (power) */
 221         snd_soc_dapm_mic,                       /* microphone */
 222         snd_soc_dapm_hp,                        /* headphones */
 223         snd_soc_dapm_spk,                       /* speaker */
 224         snd_soc_dapm_line,                      /* line input/output */
 225         snd_soc_dapm_switch,            /* analog switch */
 226         snd_soc_dapm_vmid,                      /* codec bias/vmid - to minimise pops */
 227         snd_soc_dapm_pre,                       /* machine specific pre widget - exec first */
 228         snd_soc_dapm_post,                      /* machine specific post widget - exec last */
 229 };
 230
 231 /* dapm audio path between two widgets */
 232 struct snd_soc_dapm_path {
 233         char *name;
 234         char *long_name;
 235
 236         /* source (input) and sink (output) widgets */
 237         struct snd_soc_dapm_widget *source;
 238         struct snd_soc_dapm_widget *sink;
 239         struct snd_kcontrol *kcontrol;
 240
 241         /* status */
 242         u32 connect:1;  /* source and sink widgets are connected */
 243         u32 walked:1;   /* path has been walked */
 244
 245         struct list_head list_source;
 246         struct list_head list_sink;
 247         struct list_head list;
 248 };
 249
 250 /* dapm widget */
 251 struct snd_soc_dapm_widget {
 252         enum snd_soc_dapm_type id;
 253         char *name;             /* widget name */
 254         char *sname;    /* stream name */
 255         struct snd_soc_codec *codec;
 256         struct list_head list;
 257
 258         /* dapm control */
 259         short reg;                                              /* negative reg = no direct dapm */
 260         unsigned char shift;                    /* bits to shift */
 261         unsigned int saved_value;               /* widget saved value */
 262         unsigned int value;                             /* widget current value */
 263         unsigned char power:1;                  /* block power status */
 264         unsigned char invert:1;                 /* invert the power bit */
 265         unsigned char active:1;                 /* active stream on DAC, ADC's */
 266         unsigned char connected:1;              /* connected codec pin */
 267         unsigned char new:1;                    /* cnew complete */
 268         unsigned char ext:1;                    /* has external widgets */
 269         unsigned char muted:1;                  /* muted for pop reduction */
 270         unsigned char suspend:1;                /* was active before suspend */
 271         unsigned char pmdown:1;                 /* waiting for timeout */
 272
 273         /* external events */
 274         unsigned short event_flags;             /* flags to specify event types */
 275         int (*event)(struct snd_soc_dapm_widget*, int);
 276
 277         /* kcontrols that relate to this widget */
 278         int num_kcontrols;
 279         const struct snd_kcontrol_new *kcontrols;
 280
 281         /* widget input and outputs */
 282         struct list_head sources;
 283         struct list_head sinks;
 284 };
 285
 286 #endif