400 lines
9.8 KiB
C
400 lines
9.8 KiB
C
/*
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* Audio Codec driver supporting:
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* AD1835A, AD1836, AD1837A, AD1838A, AD1839A
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*
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* Copyright 2009-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include <linux/spi/spi.h>
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#include "ad1836.h"
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enum ad1836_type {
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AD1835,
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AD1836,
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AD1838,
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};
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/* codec private data */
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struct ad1836_priv {
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enum ad1836_type type;
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};
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/*
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* AD1836 volume/mute/de-emphasis etc. controls
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*/
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static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
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static const struct soc_enum ad1836_deemp_enum =
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SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
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#define AD1836_DAC_VOLUME(x) \
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SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
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AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
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#define AD1836_DAC_SWITCH(x) \
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SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
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AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
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#define AD1836_ADC_SWITCH(x) \
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SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
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AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
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static const struct snd_kcontrol_new ad183x_dac_controls[] = {
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AD1836_DAC_VOLUME(1),
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AD1836_DAC_SWITCH(1),
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AD1836_DAC_VOLUME(2),
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AD1836_DAC_SWITCH(2),
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AD1836_DAC_VOLUME(3),
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AD1836_DAC_SWITCH(3),
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AD1836_DAC_VOLUME(4),
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AD1836_DAC_SWITCH(4),
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};
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static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("DAC1OUT"),
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SND_SOC_DAPM_OUTPUT("DAC2OUT"),
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SND_SOC_DAPM_OUTPUT("DAC3OUT"),
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SND_SOC_DAPM_OUTPUT("DAC4OUT"),
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};
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static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
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{ "DAC1OUT", NULL, "DAC" },
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{ "DAC2OUT", NULL, "DAC" },
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{ "DAC3OUT", NULL, "DAC" },
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{ "DAC4OUT", NULL, "DAC" },
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};
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static const struct snd_kcontrol_new ad183x_adc_controls[] = {
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AD1836_ADC_SWITCH(1),
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AD1836_ADC_SWITCH(2),
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AD1836_ADC_SWITCH(3),
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};
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static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("ADC1IN"),
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SND_SOC_DAPM_INPUT("ADC2IN"),
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};
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static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
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{ "ADC", NULL, "ADC1IN" },
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{ "ADC", NULL, "ADC2IN" },
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};
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static const struct snd_kcontrol_new ad183x_controls[] = {
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/* ADC high-pass filter */
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SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
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AD1836_ADC_HIGHPASS_FILTER, 1, 0),
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/* DAC de-emphasis */
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SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
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};
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static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
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AD1836_DAC_POWERDOWN, 1),
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SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
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AD1836_ADC_POWERDOWN, 1, NULL, 0),
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};
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static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
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{ "DAC", NULL, "ADC_PWR" },
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{ "ADC", NULL, "ADC_PWR" },
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};
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static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
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static const struct snd_kcontrol_new ad1836_controls[] = {
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SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
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ad1836_in_tlv),
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};
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/*
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* DAI ops entries
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*/
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static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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/* at present, we support adc aux mode to interface with
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* blackfin sport tdm mode
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*/
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case SND_SOC_DAIFMT_DSP_A:
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_IB_IF:
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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/* ALCLK,ABCLK are both output, AD1836 can only be master */
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case SND_SOC_DAIFMT_CBM_CFM:
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int ad1836_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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int word_len = 0;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->codec;
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/* bit size */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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word_len = AD1836_WORD_LEN_16;
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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word_len = AD1836_WORD_LEN_20;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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case SNDRV_PCM_FORMAT_S32_LE:
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word_len = AD1836_WORD_LEN_24;
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break;
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}
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snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK,
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word_len << AD1836_DAC_WORD_LEN_OFFSET);
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snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK,
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word_len << AD1836_ADC_WORD_OFFSET);
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return 0;
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}
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static const struct snd_soc_dai_ops ad1836_dai_ops = {
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.hw_params = ad1836_hw_params,
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.set_fmt = ad1836_set_dai_fmt,
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};
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#define AD183X_DAI(_name, num_dacs, num_adcs) \
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{ \
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.name = _name "-hifi", \
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.playback = { \
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.stream_name = "Playback", \
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.channels_min = 2, \
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.channels_max = (num_dacs) * 2, \
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.rates = SNDRV_PCM_RATE_48000, \
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.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
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}, \
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.capture = { \
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.stream_name = "Capture", \
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.channels_min = 2, \
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.channels_max = (num_adcs) * 2, \
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.rates = SNDRV_PCM_RATE_48000, \
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.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
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}, \
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.ops = &ad1836_dai_ops, \
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}
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static struct snd_soc_dai_driver ad183x_dais[] = {
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[AD1835] = AD183X_DAI("ad1835", 4, 1),
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[AD1836] = AD183X_DAI("ad1836", 3, 2),
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[AD1838] = AD183X_DAI("ad1838", 3, 1),
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};
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#ifdef CONFIG_PM
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static int ad1836_suspend(struct snd_soc_codec *codec, pm_message_t state)
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{
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/* reset clock control mode */
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return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
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AD1836_ADC_SERFMT_MASK, 0);
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}
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static int ad1836_resume(struct snd_soc_codec *codec)
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{
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/* restore clock control mode */
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return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
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AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
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}
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#else
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#define ad1836_suspend NULL
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#define ad1836_resume NULL
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#endif
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static int ad1836_probe(struct snd_soc_codec *codec)
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{
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struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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int num_dacs, num_adcs;
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int ret = 0;
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int i;
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num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
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num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
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ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
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if (ret < 0) {
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dev_err(codec->dev, "failed to set cache I/O: %d\n",
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ret);
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return ret;
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}
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/* default setting for ad1836 */
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/* de-emphasis: 48kHz, power-on dac */
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snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
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/* unmute dac channels */
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snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
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/* high-pass filter enable, power-on adc */
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snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
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/* unmute adc channles, adc aux mode */
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snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
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/* volume */
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for (i = 1; i <= num_dacs; ++i) {
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snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
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snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
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}
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if (ad1836->type == AD1836) {
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/* left/right diff:PGA/MUX */
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snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
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ret = snd_soc_add_controls(codec, ad1836_controls,
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ARRAY_SIZE(ad1836_controls));
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if (ret)
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return ret;
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} else {
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snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
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}
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ret = snd_soc_add_controls(codec, ad183x_dac_controls, num_dacs * 2);
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if (ret)
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return ret;
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ret = snd_soc_add_controls(codec, ad183x_adc_controls, num_adcs);
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if (ret)
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return ret;
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ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
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if (ret)
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return ret;
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ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
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if (ret)
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return ret;
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ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
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if (ret)
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return ret;
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ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
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if (ret)
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return ret;
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return ret;
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}
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/* power down chip */
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static int ad1836_remove(struct snd_soc_codec *codec)
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{
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/* reset clock control mode */
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return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
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AD1836_ADC_SERFMT_MASK, 0);
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}
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static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
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.probe = ad1836_probe,
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.remove = ad1836_remove,
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.suspend = ad1836_suspend,
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.resume = ad1836_resume,
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.reg_cache_size = AD1836_NUM_REGS,
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.reg_word_size = sizeof(u16),
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.controls = ad183x_controls,
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.num_controls = ARRAY_SIZE(ad183x_controls),
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.dapm_widgets = ad183x_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
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.dapm_routes = ad183x_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
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};
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static int __devinit ad1836_spi_probe(struct spi_device *spi)
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{
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struct ad1836_priv *ad1836;
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int ret;
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ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
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if (ad1836 == NULL)
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return -ENOMEM;
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ad1836->type = spi_get_device_id(spi)->driver_data;
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spi_set_drvdata(spi, ad1836);
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ret = snd_soc_register_codec(&spi->dev,
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&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
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if (ret < 0)
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kfree(ad1836);
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return ret;
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}
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static int __devexit ad1836_spi_remove(struct spi_device *spi)
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{
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snd_soc_unregister_codec(&spi->dev);
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kfree(spi_get_drvdata(spi));
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return 0;
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}
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static const struct spi_device_id ad1836_ids[] = {
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{ "ad1835", AD1835 },
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{ "ad1836", AD1836 },
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{ "ad1837", AD1835 },
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{ "ad1838", AD1838 },
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{ "ad1839", AD1838 },
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{ },
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};
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MODULE_DEVICE_TABLE(spi, ad1836_ids);
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static struct spi_driver ad1836_spi_driver = {
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.driver = {
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.name = "ad1836",
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.owner = THIS_MODULE,
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},
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.probe = ad1836_spi_probe,
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.remove = __devexit_p(ad1836_spi_remove),
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.id_table = ad1836_ids,
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};
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static int __init ad1836_init(void)
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{
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return spi_register_driver(&ad1836_spi_driver);
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}
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module_init(ad1836_init);
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static void __exit ad1836_exit(void)
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{
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spi_unregister_driver(&ad1836_spi_driver);
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}
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module_exit(ad1836_exit);
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MODULE_DESCRIPTION("ASoC ad1836 driver");
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MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
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MODULE_LICENSE("GPL");
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