393 lines
10 KiB
C
393 lines
10 KiB
C
/*
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* AD193X Audio Codec driver supporting AD1936/7/8/9
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*
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* Copyright 2010 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/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/regmap.h>
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#include <linux/slab.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 "ad193x.h"
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/* codec private data */
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struct ad193x_priv {
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struct regmap *regmap;
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int sysclk;
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};
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/*
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* AD193X volume/mute/de-emphasis etc. controls
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*/
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static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
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static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
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ad193x_deemp);
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static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
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static const struct snd_kcontrol_new ad193x_snd_controls[] = {
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/* DAC volume control */
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SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
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AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
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AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
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AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
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SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
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AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
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/* ADC switch control */
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SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
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AD193X_ADCR1_MUTE, 1, 1),
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SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
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AD193X_ADCR2_MUTE, 1, 1),
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/* DAC switch control */
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SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
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AD193X_DACR1_MUTE, 1, 1),
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SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
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AD193X_DACR2_MUTE, 1, 1),
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SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
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AD193X_DACR3_MUTE, 1, 1),
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SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
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AD193X_DACR4_MUTE, 1, 1),
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/* ADC high-pass filter */
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SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
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AD193X_ADC_HIGHPASS_FILTER, 1, 0),
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/* DAC de-emphasis */
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SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
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};
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static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
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SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
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SND_SOC_DAPM_VMID("VMID"),
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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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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 audio_paths[] = {
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{ "DAC", NULL, "SYSCLK" },
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{ "DAC Output", NULL, "DAC" },
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{ "DAC Output", NULL, "VMID" },
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{ "ADC", NULL, "SYSCLK" },
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{ "DAC", NULL, "ADC_PWR" },
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{ "ADC", NULL, "ADC_PWR" },
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{ "DAC1OUT", NULL, "DAC Output" },
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{ "DAC2OUT", NULL, "DAC Output" },
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{ "DAC3OUT", NULL, "DAC Output" },
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{ "DAC4OUT", NULL, "DAC Output" },
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{ "ADC", NULL, "ADC1IN" },
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{ "ADC", NULL, "ADC2IN" },
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{ "SYSCLK", NULL, "PLL_PWR" },
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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 ad193x_mute(struct snd_soc_dai *dai, int mute)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
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if (mute)
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_MASTER_MUTE,
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AD193X_DAC_MASTER_MUTE);
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else
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_MASTER_MUTE, 0);
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return 0;
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}
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static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
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unsigned int rx_mask, int slots, int width)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
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unsigned int channels;
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switch (slots) {
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case 2:
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channels = AD193X_2_CHANNELS;
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break;
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case 4:
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channels = AD193X_4_CHANNELS;
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break;
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case 8:
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channels = AD193X_8_CHANNELS;
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break;
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case 16:
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channels = AD193X_16_CHANNELS;
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break;
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default:
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return -EINVAL;
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}
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
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AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
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AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
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return 0;
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}
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static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
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unsigned int adc_serfmt = 0;
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unsigned int adc_fmt = 0;
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unsigned int dac_fmt = 0;
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/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
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* with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
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*/
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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adc_serfmt |= AD193X_ADC_SERFMT_TDM;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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adc_serfmt |= AD193X_ADC_SERFMT_AUX;
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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_NB_NF: /* normal bit clock + frame */
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break;
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case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
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adc_fmt |= AD193X_ADC_LEFT_HIGH;
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dac_fmt |= AD193X_DAC_LEFT_HIGH;
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break;
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case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
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adc_fmt |= AD193X_ADC_BCLK_INV;
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dac_fmt |= AD193X_DAC_BCLK_INV;
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break;
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case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
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adc_fmt |= AD193X_ADC_LEFT_HIGH;
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adc_fmt |= AD193X_ADC_BCLK_INV;
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dac_fmt |= AD193X_DAC_LEFT_HIGH;
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dac_fmt |= AD193X_DAC_BCLK_INV;
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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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case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
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adc_fmt |= AD193X_ADC_LCR_MASTER;
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adc_fmt |= AD193X_ADC_BCLK_MASTER;
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dac_fmt |= AD193X_DAC_LCR_MASTER;
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dac_fmt |= AD193X_DAC_BCLK_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
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adc_fmt |= AD193X_ADC_LCR_MASTER;
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dac_fmt |= AD193X_DAC_LCR_MASTER;
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break;
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case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
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adc_fmt |= AD193X_ADC_BCLK_MASTER;
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dac_fmt |= AD193X_DAC_BCLK_MASTER;
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break;
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case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
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break;
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default:
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return -EINVAL;
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}
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
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AD193X_ADC_SERFMT_MASK, adc_serfmt);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
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AD193X_ADC_FMT_MASK, adc_fmt);
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
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AD193X_DAC_FMT_MASK, dac_fmt);
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return 0;
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}
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static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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switch (freq) {
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case 12288000:
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case 18432000:
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case 24576000:
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case 36864000:
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ad193x->sysclk = freq;
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return 0;
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}
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return -EINVAL;
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}
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static int ad193x_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, master_rate = 0;
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struct snd_soc_codec *codec = dai->codec;
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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/* bit size */
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switch (params_width(params)) {
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case 16:
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word_len = 3;
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break;
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case 20:
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word_len = 1;
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break;
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case 24:
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case 32:
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word_len = 0;
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break;
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}
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switch (ad193x->sysclk) {
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case 12288000:
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master_rate = AD193X_PLL_INPUT_256;
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break;
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case 18432000:
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master_rate = AD193X_PLL_INPUT_384;
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break;
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case 24576000:
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master_rate = AD193X_PLL_INPUT_512;
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break;
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case 36864000:
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master_rate = AD193X_PLL_INPUT_768;
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break;
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}
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regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
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AD193X_PLL_INPUT_MASK, master_rate);
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regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
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AD193X_DAC_WORD_LEN_MASK,
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word_len << AD193X_DAC_WORD_LEN_SHFT);
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regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
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AD193X_ADC_WORD_LEN_MASK, word_len);
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return 0;
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}
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static const struct snd_soc_dai_ops ad193x_dai_ops = {
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.hw_params = ad193x_hw_params,
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.digital_mute = ad193x_mute,
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.set_tdm_slot = ad193x_set_tdm_slot,
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.set_sysclk = ad193x_set_dai_sysclk,
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.set_fmt = ad193x_set_dai_fmt,
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};
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/* codec DAI instance */
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static struct snd_soc_dai_driver ad193x_dai = {
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.name = "ad193x-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 = 8,
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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 = 4,
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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 = &ad193x_dai_ops,
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};
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static int ad193x_codec_probe(struct snd_soc_codec *codec)
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{
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struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
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/* default setting for ad193x */
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/* unmute dac channels */
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regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
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/* de-emphasis: 48kHz, powedown dac */
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regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
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/* dac in tdm mode */
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regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
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/* high-pass filter enable */
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regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
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/* sata delay=1, adc aux mode */
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regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
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/* pll input: mclki/xi */
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regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
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regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
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return 0;
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}
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static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
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.probe = ad193x_codec_probe,
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.controls = ad193x_snd_controls,
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.num_controls = ARRAY_SIZE(ad193x_snd_controls),
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.dapm_widgets = ad193x_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
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.dapm_routes = audio_paths,
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.num_dapm_routes = ARRAY_SIZE(audio_paths),
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};
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static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
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{
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return false;
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}
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const struct regmap_config ad193x_regmap_config = {
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.max_register = AD193X_NUM_REGS - 1,
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.volatile_reg = adau193x_reg_volatile,
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};
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EXPORT_SYMBOL_GPL(ad193x_regmap_config);
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int ad193x_probe(struct device *dev, struct regmap *regmap)
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{
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struct ad193x_priv *ad193x;
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
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if (ad193x == NULL)
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return -ENOMEM;
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ad193x->regmap = regmap;
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dev_set_drvdata(dev, ad193x);
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return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
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&ad193x_dai, 1);
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}
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EXPORT_SYMBOL_GPL(ad193x_probe);
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MODULE_DESCRIPTION("ASoC ad193x driver");
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MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
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MODULE_LICENSE("GPL");
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