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 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, .reg = SND_SOC_NOPM }
  50 #define SND_SOC_DAPM_OUTPUT(wname) \
  51 {       .id = snd_soc_dapm_output, .name = wname, .kcontrols = NULL, \
  52         .num_kcontrols = 0, .reg = SND_SOC_NOPM }
  53 #define SND_SOC_DAPM_MIC(wname, wevent) \
  54 {       .id = snd_soc_dapm_mic, .name = wname, .kcontrols = NULL, \
  55         .num_kcontrols = 0, .reg = SND_SOC_NOPM, .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, .reg = SND_SOC_NOPM, .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, .reg = SND_SOC_NOPM, .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, .reg = SND_SOC_NOPM, .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, .reg = SND_SOC_NOPM, .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, .reg = SND_SOC_NOPM, .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 /* generic register modifier widget */
 134 #define SND_SOC_DAPM_REG(wid, wname, wreg, wshift, wmask, won_val, woff_val) \
 135 {       .id = wid, .name = wname, .kcontrols = NULL, .num_kcontrols = 0, \
 136         .reg = -((wreg) + 1), .shift = wshift, .mask = wmask, \
 137         .on_val = won_val, .off_val = woff_val, .event = dapm_reg_event, \
 138         .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD}
 139
 140 /* dapm kcontrol types */
 141 #define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \
 142 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 143         .info = snd_soc_info_volsw, \
 144         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 145         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 146 #define SOC_DAPM_DOUBLE(xname, reg, shift_left, shift_right, max, invert, \
 147         power) \
 148 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 149         .info = snd_soc_info_volsw, \
 150         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 151         .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
 152                 ((max) << 16) | ((invert) << 24) }
 153 #define SOC_DAPM_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 154 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 155         .info = snd_soc_info_volsw, \
 156         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 157         .tlv.p = (tlv_array), \
 158         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 159         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 160 #define SOC_DAPM_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, \
 161         power, tlv_array) \
 162 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 163         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 164         .tlv.p = (tlv_array), \
 165         .info = snd_soc_info_volsw, \
 166         .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
 167         .private_value = (reg) | ((shift_left) << 8) | ((shift_right) << 12) |\
 168                 ((max) << 16) | ((invert) << 24) }
 169 #define SOC_DAPM_ENUM(xname, xenum) \
 170 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 171         .info = snd_soc_info_enum_double, \
 172         .get = snd_soc_dapm_get_enum_double, \
 173         .put = snd_soc_dapm_put_enum_double, \
 174         .private_value = (unsigned long)&xenum }
 175
 176 /* dapm stream operations */
 177 #define SND_SOC_DAPM_STREAM_NOP                 0x0
 178 #define SND_SOC_DAPM_STREAM_START               0x1
 179 #define SND_SOC_DAPM_STREAM_STOP                0x2
 180 #define SND_SOC_DAPM_STREAM_SUSPEND             0x4
 181 #define SND_SOC_DAPM_STREAM_RESUME              0x8
 182 #define SND_SOC_DAPM_STREAM_PAUSE_PUSH  0x10
 183 #define SND_SOC_DAPM_STREAM_PAUSE_RELEASE       0x20
 184
 185 /* dapm event types */
 186 #define SND_SOC_DAPM_PRE_PMU    0x1     /* before widget power up */
 187 #define SND_SOC_DAPM_POST_PMU   0x2             /* after widget power up */
 188 #define SND_SOC_DAPM_PRE_PMD    0x4     /* before widget power down */
 189 #define SND_SOC_DAPM_POST_PMD   0x8             /* after widget power down */
 190 #define SND_SOC_DAPM_PRE_REG    0x10    /* before audio path setup */
 191 #define SND_SOC_DAPM_POST_REG   0x20    /* after audio path setup */
 192
 193 /* convenience event type detection */
 194 #define SND_SOC_DAPM_EVENT_ON(e)        \
 195         (e & (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU))
 196 #define SND_SOC_DAPM_EVENT_OFF(e)       \
 197         (e & (SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD))
 198
 199 struct snd_soc_dapm_widget;
 200 enum snd_soc_dapm_type;
 201 struct snd_soc_dapm_path;
 202 struct snd_soc_dapm_pin;
 203 struct snd_soc_dapm_route;
 204
 205 int dapm_reg_event(struct snd_soc_dapm_widget *w,
 206                    struct snd_kcontrol *kcontrol, int event);
 207
 208 /* dapm controls */
 209 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
 210         struct snd_ctl_elem_value *ucontrol);
 211 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
 212         struct snd_ctl_elem_value *ucontrol);
 213 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
 214         struct snd_ctl_elem_value *ucontrol);
 215 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
 216         struct snd_ctl_elem_value *ucontrol);
 217 int snd_soc_dapm_new_control(struct snd_soc_codec *codec,
 218         const struct snd_soc_dapm_widget *widget);
 219 int snd_soc_dapm_new_controls(struct snd_soc_codec *codec,
 220         const struct snd_soc_dapm_widget *widget,
 221         int num);
 222
 223 /* dapm path setup */
 224 int  __deprecated snd_soc_dapm_connect_input(struct snd_soc_codec *codec,
 225         const char *sink_name, const char *control_name, const char *src_name);
 226 int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec);
 227 void snd_soc_dapm_free(struct snd_soc_device *socdev);
 228 int snd_soc_dapm_add_routes(struct snd_soc_codec *codec,
 229                             const struct snd_soc_dapm_route *route, int num);
 230
 231 /* dapm events */
 232 int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, char *stream,
 233         int event);
 234 int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev,
 235         enum snd_soc_bias_level level);
 236
 237 /* dapm sys fs - used by the core */
 238 int snd_soc_dapm_sys_add(struct device *dev);
 239
 240 /* dapm audio pin control and status */
 241 int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin);
 242 int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin);
 243 int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin);
 244 int snd_soc_dapm_sync(struct snd_soc_codec *codec);
 245
 246 /* dapm widget types */
 247 enum snd_soc_dapm_type {
 248         snd_soc_dapm_input = 0,         /* input pin */
 249         snd_soc_dapm_output,            /* output pin */
 250         snd_soc_dapm_mux,                       /* selects 1 analog signal from many inputs */
 251         snd_soc_dapm_mixer,                     /* mixes several analog signals together */
 252         snd_soc_dapm_pga,                       /* programmable gain/attenuation (volume) */
 253         snd_soc_dapm_adc,                       /* analog to digital converter */
 254         snd_soc_dapm_dac,                       /* digital to analog converter */
 255         snd_soc_dapm_micbias,           /* microphone bias (power) */
 256         snd_soc_dapm_mic,                       /* microphone */
 257         snd_soc_dapm_hp,                        /* headphones */
 258         snd_soc_dapm_spk,                       /* speaker */
 259         snd_soc_dapm_line,                      /* line input/output */
 260         snd_soc_dapm_switch,            /* analog switch */
 261         snd_soc_dapm_vmid,                      /* codec bias/vmid - to minimise pops */
 262         snd_soc_dapm_pre,                       /* machine specific pre widget - exec first */
 263         snd_soc_dapm_post,                      /* machine specific post widget - exec last */
 264 };
 265
 266 /*
 267  * DAPM audio route definition.
 268  *
 269  * Defines an audio route originating at source via control and finishing
 270  * at sink.
 271  */
 272 struct snd_soc_dapm_route {
 273         const char *sink;
 274         const char *control;
 275         const char *source;
 276 };
 277
 278 /* dapm audio path between two widgets */
 279 struct snd_soc_dapm_path {
 280         char *name;
 281         char *long_name;
 282
 283         /* source (input) and sink (output) widgets */
 284         struct snd_soc_dapm_widget *source;
 285         struct snd_soc_dapm_widget *sink;
 286         struct snd_kcontrol *kcontrol;
 287
 288         /* status */
 289         u32 connect:1;  /* source and sink widgets are connected */
 290         u32 walked:1;   /* path has been walked */
 291
 292         struct list_head list_source;
 293         struct list_head list_sink;
 294         struct list_head list;
 295 };
 296
 297 /* dapm widget */
 298 struct snd_soc_dapm_widget {
 299         enum snd_soc_dapm_type id;
 300         char *name;             /* widget name */
 301         char *sname;    /* stream name */
 302         struct snd_soc_codec *codec;
 303         struct list_head list;
 304
 305         /* dapm control */
 306         short reg;                                              /* negative reg = no direct dapm */
 307         unsigned char shift;                    /* bits to shift */
 308         unsigned int saved_value;               /* widget saved value */
 309         unsigned int value;                             /* widget current value */
 310         unsigned int mask;                      /* non-shifted mask */
 311         unsigned int on_val;                    /* on state value */
 312         unsigned int off_val;                   /* off state value */
 313         unsigned char power:1;                  /* block power status */
 314         unsigned char invert:1;                 /* invert the power bit */
 315         unsigned char active:1;                 /* active stream on DAC, ADC's */
 316         unsigned char connected:1;              /* connected codec pin */
 317         unsigned char new:1;                    /* cnew complete */
 318         unsigned char ext:1;                    /* has external widgets */
 319         unsigned char muted:1;                  /* muted for pop reduction */
 320         unsigned char suspend:1;                /* was active before suspend */
 321         unsigned char pmdown:1;                 /* waiting for timeout */
 322
 323         /* external events */
 324         unsigned short event_flags;             /* flags to specify event types */
 325         int (*event)(struct snd_soc_dapm_widget*, struct snd_kcontrol *, int);
 326
 327         /* kcontrols that relate to this widget */
 328         int num_kcontrols;
 329         const struct snd_kcontrol_new *kcontrols;
 330
 331         /* widget input and outputs */
 332         struct list_head sources;
 333         struct list_head sinks;
 334 };
 335
 336 #endif