429 lines
14 KiB
C
429 lines
14 KiB
C
/*
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* linux/sound/soc.h -- ALSA SoC Layer
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*
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* Author: Liam Girdwood
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* Created: Aug 11th 2005
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* Copyright: Wolfson Microelectronics. PLC.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __LINUX_SND_SOC_H
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#define __LINUX_SND_SOC_H
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#include <linux/platform_device.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/control.h>
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#include <sound/ac97_codec.h>
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/*
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* Convenience kcontrol builders
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*/
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#define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
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((unsigned long)&(struct soc_mixer_control) \
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{.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
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.invert = xinvert})
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#define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
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((unsigned long)&(struct soc_mixer_control) \
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{.reg = xreg, .max = xmax, .invert = xinvert})
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#define SOC_SINGLE(xname, reg, shift, max, invert) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
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.put = snd_soc_put_volsw, \
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.private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
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#define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
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SNDRV_CTL_ELEM_ACCESS_READWRITE,\
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.tlv.p = (tlv_array), \
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.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
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.put = snd_soc_put_volsw, \
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.private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
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#define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
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.info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
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.put = snd_soc_put_volsw, \
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.private_value = (unsigned long)&(struct soc_mixer_control) \
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{.reg = xreg, .shift = shift_left, .rshift = shift_right, \
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.max = xmax, .invert = xinvert} }
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#define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
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.info = snd_soc_info_volsw_2r, \
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.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
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.private_value = (unsigned long)&(struct soc_mixer_control) \
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{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
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.max = xmax, .invert = xinvert} }
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#define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
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.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
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SNDRV_CTL_ELEM_ACCESS_READWRITE,\
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.tlv.p = (tlv_array), \
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.info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
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.put = snd_soc_put_volsw, \
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.private_value = (unsigned long)&(struct soc_mixer_control) \
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{.reg = xreg, .shift = shift_left, .rshift = shift_right,\
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.max = xmax, .invert = xinvert} }
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#define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
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.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
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SNDRV_CTL_ELEM_ACCESS_READWRITE,\
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.tlv.p = (tlv_array), \
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.info = snd_soc_info_volsw_2r, \
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.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
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.private_value = (unsigned long)&(struct soc_mixer_control) \
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{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
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.max = xmax, .invert = xinvert} }
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#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
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.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
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SNDRV_CTL_ELEM_ACCESS_READWRITE, \
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.tlv.p = (tlv_array), \
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.info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
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.put = snd_soc_put_volsw_s8, \
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.private_value = (unsigned long)&(struct soc_mixer_control) \
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{.reg = xreg, .min = xmin, .max = xmax} }
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#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
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{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
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.max = xmax, .texts = xtexts }
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#define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
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SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
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#define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
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{ .max = xmax, .texts = xtexts }
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#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
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{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
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.mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
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#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
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SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
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#define SOC_ENUM(xname, xenum) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
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.info = snd_soc_info_enum_double, \
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.get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
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.private_value = (unsigned long)&xenum }
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#define SOC_VALUE_ENUM(xname, xenum) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
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.info = snd_soc_info_enum_double, \
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.get = snd_soc_get_value_enum_double, \
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.put = snd_soc_put_value_enum_double, \
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.private_value = (unsigned long)&xenum }
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#define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
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xhandler_get, xhandler_put) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = snd_soc_info_volsw, \
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.get = xhandler_get, .put = xhandler_put, \
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.private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
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#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
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xhandler_get, xhandler_put, tlv_array) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
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SNDRV_CTL_ELEM_ACCESS_READWRITE,\
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.tlv.p = (tlv_array), \
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.info = snd_soc_info_volsw, \
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.get = xhandler_get, .put = xhandler_put, \
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.private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
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#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = snd_soc_info_bool_ext, \
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.get = xhandler_get, .put = xhandler_put, \
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.private_value = xdata }
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#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
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{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
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.info = snd_soc_info_enum_ext, \
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.get = xhandler_get, .put = xhandler_put, \
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.private_value = (unsigned long)&xenum }
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/*
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* Bias levels
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*
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* @ON: Bias is fully on for audio playback and capture operations.
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* @PREPARE: Prepare for audio operations. Called before DAPM switching for
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* stream start and stop operations.
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* @STANDBY: Low power standby state when no playback/capture operations are
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* in progress. NOTE: The transition time between STANDBY and ON
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* should be as fast as possible and no longer than 10ms.
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* @OFF: Power Off. No restrictions on transition times.
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*/
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enum snd_soc_bias_level {
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SND_SOC_BIAS_ON,
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SND_SOC_BIAS_PREPARE,
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SND_SOC_BIAS_STANDBY,
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SND_SOC_BIAS_OFF,
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};
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struct snd_soc_device;
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struct snd_soc_pcm_stream;
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struct snd_soc_ops;
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struct snd_soc_dai_mode;
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struct snd_soc_pcm_runtime;
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struct snd_soc_dai;
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struct snd_soc_platform;
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struct snd_soc_codec;
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struct soc_enum;
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struct snd_soc_ac97_ops;
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typedef int (*hw_write_t)(void *,const char* ,int);
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typedef int (*hw_read_t)(void *,char* ,int);
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extern struct snd_ac97_bus_ops soc_ac97_ops;
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int snd_soc_register_platform(struct snd_soc_platform *platform);
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void snd_soc_unregister_platform(struct snd_soc_platform *platform);
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int snd_soc_register_codec(struct snd_soc_codec *codec);
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void snd_soc_unregister_codec(struct snd_soc_codec *codec);
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/* pcm <-> DAI connect */
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void snd_soc_free_pcms(struct snd_soc_device *socdev);
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int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
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int snd_soc_init_card(struct snd_soc_device *socdev);
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/* set runtime hw params */
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int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
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const struct snd_pcm_hardware *hw);
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/* codec IO */
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#define snd_soc_read(codec, reg) codec->read(codec, reg)
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#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
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/* codec register bit access */
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int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
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unsigned short mask, unsigned short value);
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int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
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unsigned short mask, unsigned short value);
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int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
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struct snd_ac97_bus_ops *ops, int num);
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void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
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/*
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*Controls
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*/
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struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
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void *data, char *long_name);
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int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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#define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
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int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo);
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int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol);
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/* SoC PCM stream information */
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struct snd_soc_pcm_stream {
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char *stream_name;
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u64 formats; /* SNDRV_PCM_FMTBIT_* */
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unsigned int rates; /* SNDRV_PCM_RATE_* */
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unsigned int rate_min; /* min rate */
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unsigned int rate_max; /* max rate */
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unsigned int channels_min; /* min channels */
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unsigned int channels_max; /* max channels */
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unsigned int active:1; /* stream is in use */
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};
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/* SoC audio ops */
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struct snd_soc_ops {
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int (*startup)(struct snd_pcm_substream *);
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void (*shutdown)(struct snd_pcm_substream *);
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int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
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int (*hw_free)(struct snd_pcm_substream *);
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int (*prepare)(struct snd_pcm_substream *);
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int (*trigger)(struct snd_pcm_substream *, int);
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};
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/* SoC Audio Codec */
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struct snd_soc_codec {
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char *name;
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struct module *owner;
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struct mutex mutex;
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struct device *dev;
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struct list_head list;
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/* callbacks */
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int (*set_bias_level)(struct snd_soc_codec *,
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enum snd_soc_bias_level level);
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/* runtime */
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struct snd_card *card;
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struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
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unsigned int active;
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unsigned int pcm_devs;
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void *private_data;
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/* codec IO */
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void *control_data; /* codec control (i2c/3wire) data */
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unsigned int (*read)(struct snd_soc_codec *, unsigned int);
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int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
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int (*display_register)(struct snd_soc_codec *, char *,
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size_t, unsigned int);
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hw_write_t hw_write;
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hw_read_t hw_read;
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void *reg_cache;
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short reg_cache_size;
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short reg_cache_step;
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/* dapm */
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u32 pop_time;
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struct list_head dapm_widgets;
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struct list_head dapm_paths;
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enum snd_soc_bias_level bias_level;
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enum snd_soc_bias_level suspend_bias_level;
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struct delayed_work delayed_work;
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/* codec DAI's */
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struct snd_soc_dai *dai;
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unsigned int num_dai;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs_reg;
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struct dentry *debugfs_pop_time;
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#endif
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};
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/* codec device */
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struct snd_soc_codec_device {
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int (*probe)(struct platform_device *pdev);
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int (*remove)(struct platform_device *pdev);
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int (*suspend)(struct platform_device *pdev, pm_message_t state);
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int (*resume)(struct platform_device *pdev);
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};
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/* SoC platform interface */
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struct snd_soc_platform {
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char *name;
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struct list_head list;
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int (*probe)(struct platform_device *pdev);
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int (*remove)(struct platform_device *pdev);
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int (*suspend)(struct snd_soc_dai *dai);
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int (*resume)(struct snd_soc_dai *dai);
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/* pcm creation and destruction */
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int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
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struct snd_pcm *);
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void (*pcm_free)(struct snd_pcm *);
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/* platform stream ops */
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struct snd_pcm_ops *pcm_ops;
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};
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/* SoC machine DAI configuration, glues a codec and cpu DAI together */
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struct snd_soc_dai_link {
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char *name; /* Codec name */
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char *stream_name; /* Stream name */
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/* DAI */
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struct snd_soc_dai *codec_dai;
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struct snd_soc_dai *cpu_dai;
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/* machine stream operations */
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struct snd_soc_ops *ops;
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/* codec/machine specific init - e.g. add machine controls */
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int (*init)(struct snd_soc_codec *codec);
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/* DAI pcm */
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struct snd_pcm *pcm;
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};
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/* SoC card */
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struct snd_soc_card {
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char *name;
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struct device *dev;
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struct list_head list;
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int instantiated;
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int (*probe)(struct platform_device *pdev);
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int (*remove)(struct platform_device *pdev);
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/* the pre and post PM functions are used to do any PM work before and
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* after the codec and DAI's do any PM work. */
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int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
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int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
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int (*resume_pre)(struct platform_device *pdev);
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int (*resume_post)(struct platform_device *pdev);
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/* callbacks */
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int (*set_bias_level)(struct snd_soc_card *,
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enum snd_soc_bias_level level);
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/* CPU <--> Codec DAI links */
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struct snd_soc_dai_link *dai_link;
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int num_links;
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struct snd_soc_device *socdev;
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struct snd_soc_platform *platform;
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struct delayed_work delayed_work;
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struct work_struct deferred_resume_work;
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};
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/* SoC Device - the audio subsystem */
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struct snd_soc_device {
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struct device *dev;
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struct snd_soc_card *card;
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struct snd_soc_codec *codec;
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struct snd_soc_codec_device *codec_dev;
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void *codec_data;
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};
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/* runtime channel data */
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struct snd_soc_pcm_runtime {
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struct snd_soc_dai_link *dai;
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struct snd_soc_device *socdev;
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};
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/* mixer control */
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struct soc_mixer_control {
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int min, max;
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unsigned int reg, rreg, shift, rshift, invert;
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};
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/* enumerated kcontrol */
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struct soc_enum {
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unsigned short reg;
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unsigned short reg2;
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unsigned char shift_l;
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unsigned char shift_r;
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unsigned int max;
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unsigned int mask;
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const char **texts;
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const unsigned int *values;
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void *dapm;
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};
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#include <sound/soc-dai.h>
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#endif
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