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linux-next/sound/soc/codecs/max98090.c
Kuninori Morimoto 83f7cbc43b ASoC: Add max98090 codec driver 
This patch adds the max98090 codec prototype driver.
It supports Headphone only at this point.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-21 13:31:29 +09:00

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/*
* max98090.c -- MAX98090 ALSA SoC Audio driver
* based on Rev0p8 datasheet
*
* Copyright (C) 2012 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* Based on
*
* max98095.c
* Copyright 2011 Maxim Integrated Products
*
* https://github.com/hardkernel/linux/commit/\
* 3417d7166b17113b3b33b0a337c74d1c7cc313df#sound/soc/codecs/max98090.c
* Copyright 2011 Maxim Integrated Products
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/tlv.h>
/*
*
* MAX98090 Registers Definition
*
*/
/* RESET / STATUS / INTERRUPT REGISTERS */
#define MAX98090_0x00_SW_RESET 0x00
#define MAX98090_0x01_INT_STS 0x01
#define MAX98090_0x02_JACK_STS 0x02
#define MAX98090_0x03_INT_MASK 0x03
/* QUICK SETUP REGISTERS */
#define MAX98090_0x04_SYS_CLK 0x04
#define MAX98090_0x05_SAMPLE_RATE 0x05
#define MAX98090_0x06_DAI_IF 0x06
#define MAX98090_0x07_DAC_PATH 0x07
#define MAX98090_0x08_MIC_TO_ADC 0x08
#define MAX98090_0x09_LINE_TO_ADC 0x09
#define MAX98090_0x0A_ANALOG_MIC_LOOP 0x0A
#define MAX98090_0x0B_ANALOG_LINE_LOOP 0x0B
/* ANALOG INPUT CONFIGURATION REGISTERS */
#define MAX98090_0x0D_INPUT_CONFIG 0x0D
#define MAX98090_0x0E_LINE_IN_LVL 0x0E
#define MAX98090_0x0F_LINI_IN_CFG 0x0F
#define MAX98090_0x10_MIC1_IN_LVL 0x10
#define MAX98090_0x11_MIC2_IN_LVL 0x11
/* MICROPHONE CONFIGURATION REGISTERS */
#define MAX98090_0x12_MIC_BIAS_VOL 0x12
#define MAX98090_0x13_DIGITAL_MIC_CFG 0x13
#define MAX98090_0x14_DIGITAL_MIC_MODE 0x14
/* ADC PATH AND CONFIGURATION REGISTERS */
#define MAX98090_0x15_L_ADC_MIX 0x15
#define MAX98090_0x16_R_ADC_MIX 0x16
#define MAX98090_0x17_L_ADC_LVL 0x17
#define MAX98090_0x18_R_ADC_LVL 0x18
#define MAX98090_0x19_ADC_BIQUAD_LVL 0x19
#define MAX98090_0x1A_ADC_SIDETONE 0x1A
/* CLOCK CONFIGURATION REGISTERS */
#define MAX98090_0x1B_SYS_CLK 0x1B
#define MAX98090_0x1C_CLK_MODE 0x1C
#define MAX98090_0x1D_ANY_CLK1 0x1D
#define MAX98090_0x1E_ANY_CLK2 0x1E
#define MAX98090_0x1F_ANY_CLK3 0x1F
#define MAX98090_0x20_ANY_CLK4 0x20
#define MAX98090_0x21_MASTER_MODE 0x21
/* INTERFACE CONTROL REGISTERS */
#define MAX98090_0x22_DAI_IF_FMT 0x22
#define MAX98090_0x23_DAI_TDM_FMT1 0x23
#define MAX98090_0x24_DAI_TDM_FMT2 0x24
#define MAX98090_0x25_DAI_IO_CFG 0x25
#define MAX98090_0x26_FILTER_CFG 0x26
#define MAX98090_0x27_DAI_PLAYBACK_LVL 0x27
#define MAX98090_0x28_EQ_PLAYBACK_LVL 0x28
/* HEADPHONE CONTROL REGISTERS */
#define MAX98090_0x29_L_HP_MIX 0x29
#define MAX98090_0x2A_R_HP_MIX 0x2A
#define MAX98090_0x2B_HP_CTR 0x2B
#define MAX98090_0x2C_L_HP_VOL 0x2C
#define MAX98090_0x2D_R_HP_VOL 0x2D
/* SPEAKER CONFIGURATION REGISTERS */
#define MAX98090_0x2E_L_SPK_MIX 0x2E
#define MAX98090_0x2F_R_SPK_MIX 0x2F
#define MAX98090_0x30_SPK_CTR 0x30
#define MAX98090_0x31_L_SPK_VOL 0x31
#define MAX98090_0x32_R_SPK_VOL 0x32
/* ALC CONFIGURATION REGISTERS */
#define MAX98090_0x33_ALC_TIMING 0x33
#define MAX98090_0x34_ALC_COMPRESSOR 0x34
#define MAX98090_0x35_ALC_EXPANDER 0x35
#define MAX98090_0x36_ALC_GAIN 0x36
/* RECEIVER AND LINE_OUTPUT REGISTERS */
#define MAX98090_0x37_RCV_LOUT_L_MIX 0x37
#define MAX98090_0x38_RCV_LOUT_L_CNTL 0x38
#define MAX98090_0x39_RCV_LOUT_L_VOL 0x39
#define MAX98090_0x3A_LOUT_R_MIX 0x3A
#define MAX98090_0x3B_LOUT_R_CNTL 0x3B
#define MAX98090_0x3C_LOUT_R_VOL 0x3C
/* JACK DETECT AND ENABLE REGISTERS */
#define MAX98090_0x3D_JACK_DETECT 0x3D
#define MAX98090_0x3E_IN_ENABLE 0x3E
#define MAX98090_0x3F_OUT_ENABLE 0x3F
#define MAX98090_0x40_LVL_CTR 0x40
#define MAX98090_0x41_DSP_FILTER_ENABLE 0x41
/* BIAS AND POWER MODE CONFIGURATION REGISTERS */
#define MAX98090_0x42_BIAS_CTR 0x42
#define MAX98090_0x43_DAC_CTR 0x43
#define MAX98090_0x44_ADC_CTR 0x44
#define MAX98090_0x45_DEV_SHUTDOWN 0x45
/* REVISION ID REGISTER */
#define MAX98090_0xFF_REV_ID 0xFF
#define MAX98090_REG_MAX_CACHED 0x45
#define MAX98090_REG_END 0xFF
/*
*
* MAX98090 Registers Bit Fields
*
*/
/* MAX98090_0x06_DAI_IF */
#define MAX98090_DAI_IF_MASK 0x3F
#define MAX98090_RJ_M (1 << 5)
#define MAX98090_RJ_S (1 << 4)
#define MAX98090_LJ_M (1 << 3)
#define MAX98090_LJ_S (1 << 2)
#define MAX98090_I2S_M (1 << 1)
#define MAX98090_I2S_S (1 << 0)
/* MAX98090_0x45_DEV_SHUTDOWN */
#define MAX98090_SHDNRUN (1 << 7)
/* codec private data */
struct max98090_priv {
struct regmap *regmap;
};
static const struct reg_default max98090_reg_defaults[] = {
/* RESET / STATUS / INTERRUPT REGISTERS */
{MAX98090_0x00_SW_RESET, 0x00},
{MAX98090_0x01_INT_STS, 0x00},
{MAX98090_0x02_JACK_STS, 0x00},
{MAX98090_0x03_INT_MASK, 0x04},
/* QUICK SETUP REGISTERS */
{MAX98090_0x04_SYS_CLK, 0x00},
{MAX98090_0x05_SAMPLE_RATE, 0x00},
{MAX98090_0x06_DAI_IF, 0x00},
{MAX98090_0x07_DAC_PATH, 0x00},
{MAX98090_0x08_MIC_TO_ADC, 0x00},
{MAX98090_0x09_LINE_TO_ADC, 0x00},
{MAX98090_0x0A_ANALOG_MIC_LOOP, 0x00},
{MAX98090_0x0B_ANALOG_LINE_LOOP, 0x00},
/* ANALOG INPUT CONFIGURATION REGISTERS */
{MAX98090_0x0D_INPUT_CONFIG, 0x00},
{MAX98090_0x0E_LINE_IN_LVL, 0x1B},
{MAX98090_0x0F_LINI_IN_CFG, 0x00},
{MAX98090_0x10_MIC1_IN_LVL, 0x11},
{MAX98090_0x11_MIC2_IN_LVL, 0x11},
/* MICROPHONE CONFIGURATION REGISTERS */
{MAX98090_0x12_MIC_BIAS_VOL, 0x00},
{MAX98090_0x13_DIGITAL_MIC_CFG, 0x00},
{MAX98090_0x14_DIGITAL_MIC_MODE, 0x00},
/* ADC PATH AND CONFIGURATION REGISTERS */
{MAX98090_0x15_L_ADC_MIX, 0x00},
{MAX98090_0x16_R_ADC_MIX, 0x00},
{MAX98090_0x17_L_ADC_LVL, 0x03},
{MAX98090_0x18_R_ADC_LVL, 0x03},
{MAX98090_0x19_ADC_BIQUAD_LVL, 0x00},
{MAX98090_0x1A_ADC_SIDETONE, 0x00},
/* CLOCK CONFIGURATION REGISTERS */
{MAX98090_0x1B_SYS_CLK, 0x00},
{MAX98090_0x1C_CLK_MODE, 0x00},
{MAX98090_0x1D_ANY_CLK1, 0x00},
{MAX98090_0x1E_ANY_CLK2, 0x00},
{MAX98090_0x1F_ANY_CLK3, 0x00},
{MAX98090_0x20_ANY_CLK4, 0x00},
{MAX98090_0x21_MASTER_MODE, 0x00},
/* INTERFACE CONTROL REGISTERS */
{MAX98090_0x22_DAI_IF_FMT, 0x00},
{MAX98090_0x23_DAI_TDM_FMT1, 0x00},
{MAX98090_0x24_DAI_TDM_FMT2, 0x00},
{MAX98090_0x25_DAI_IO_CFG, 0x00},
{MAX98090_0x26_FILTER_CFG, 0x80},
{MAX98090_0x27_DAI_PLAYBACK_LVL, 0x00},
{MAX98090_0x28_EQ_PLAYBACK_LVL, 0x00},
/* HEADPHONE CONTROL REGISTERS */
{MAX98090_0x29_L_HP_MIX, 0x00},
{MAX98090_0x2A_R_HP_MIX, 0x00},
{MAX98090_0x2B_HP_CTR, 0x00},
{MAX98090_0x2C_L_HP_VOL, 0x1A},
{MAX98090_0x2D_R_HP_VOL, 0x1A},
/* SPEAKER CONFIGURATION REGISTERS */
{MAX98090_0x2E_L_SPK_MIX, 0x00},
{MAX98090_0x2F_R_SPK_MIX, 0x00},
{MAX98090_0x30_SPK_CTR, 0x00},
{MAX98090_0x31_L_SPK_VOL, 0x2C},
{MAX98090_0x32_R_SPK_VOL, 0x2C},
/* ALC CONFIGURATION REGISTERS */
{MAX98090_0x33_ALC_TIMING, 0x00},
{MAX98090_0x34_ALC_COMPRESSOR, 0x00},
{MAX98090_0x35_ALC_EXPANDER, 0x00},
{MAX98090_0x36_ALC_GAIN, 0x00},
/* RECEIVER AND LINE_OUTPUT REGISTERS */
{MAX98090_0x37_RCV_LOUT_L_MIX, 0x00},
{MAX98090_0x38_RCV_LOUT_L_CNTL, 0x00},
{MAX98090_0x39_RCV_LOUT_L_VOL, 0x15},
{MAX98090_0x3A_LOUT_R_MIX, 0x00},
{MAX98090_0x3B_LOUT_R_CNTL, 0x00},
{MAX98090_0x3C_LOUT_R_VOL, 0x15},
/* JACK DETECT AND ENABLE REGISTERS */
{MAX98090_0x3D_JACK_DETECT, 0x00},
{MAX98090_0x3E_IN_ENABLE, 0x00},
{MAX98090_0x3F_OUT_ENABLE, 0x00},
{MAX98090_0x40_LVL_CTR, 0x00},
{MAX98090_0x41_DSP_FILTER_ENABLE, 0x00},
/* BIAS AND POWER MODE CONFIGURATION REGISTERS */
{MAX98090_0x42_BIAS_CTR, 0x00},
{MAX98090_0x43_DAC_CTR, 0x00},
{MAX98090_0x44_ADC_CTR, 0x06},
{MAX98090_0x45_DEV_SHUTDOWN, 0x00},
};
static const unsigned int max98090_hp_tlv[] = {
TLV_DB_RANGE_HEAD(5),
0x0, 0x6, TLV_DB_SCALE_ITEM(-6700, 400, 0),
0x7, 0xE, TLV_DB_SCALE_ITEM(-4000, 300, 0),
0xF, 0x15, TLV_DB_SCALE_ITEM(-1700, 200, 0),
0x16, 0x1B, TLV_DB_SCALE_ITEM(-400, 100, 0),
0x1C, 0x1F, TLV_DB_SCALE_ITEM(150, 50, 0),
};
static struct snd_kcontrol_new max98090_snd_controls[] = {
SOC_DOUBLE_R_TLV("Headphone Volume", MAX98090_0x2C_L_HP_VOL,
MAX98090_0x2D_R_HP_VOL, 0, 31, 0, max98090_hp_tlv),
};
/* Left HeadPhone Mixer Switch */
static struct snd_kcontrol_new max98090_left_hp_mixer_controls[] = {
SOC_DAPM_SINGLE("DACR Switch", MAX98090_0x29_L_HP_MIX, 1, 1, 0),
SOC_DAPM_SINGLE("DACL Switch", MAX98090_0x29_L_HP_MIX, 0, 1, 0),
};
/* Right HeadPhone Mixer Switch */
static struct snd_kcontrol_new max98090_right_hp_mixer_controls[] = {
SOC_DAPM_SINGLE("DACR Switch", MAX98090_0x2A_R_HP_MIX, 1, 1, 0),
SOC_DAPM_SINGLE("DACL Switch", MAX98090_0x2A_R_HP_MIX, 0, 1, 0),
};
static struct snd_soc_dapm_widget max98090_dapm_widgets[] = {
/* Output */
SND_SOC_DAPM_OUTPUT("HPL"),
SND_SOC_DAPM_OUTPUT("HPR"),
/* PGA */
SND_SOC_DAPM_PGA("HPL Out", MAX98090_0x3F_OUT_ENABLE, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA("HPR Out", MAX98090_0x3F_OUT_ENABLE, 6, 0, NULL, 0),
/* Mixer */
SND_SOC_DAPM_MIXER("HPL Mixer", SND_SOC_NOPM, 0, 0,
max98090_left_hp_mixer_controls,
ARRAY_SIZE(max98090_left_hp_mixer_controls)),
SND_SOC_DAPM_MIXER("HPR Mixer", SND_SOC_NOPM, 0, 0,
max98090_right_hp_mixer_controls,
ARRAY_SIZE(max98090_right_hp_mixer_controls)),
/* DAC */
SND_SOC_DAPM_DAC("DACL", "Hifi Playback", MAX98090_0x3F_OUT_ENABLE, 0, 0),
SND_SOC_DAPM_DAC("DACR", "Hifi Playback", MAX98090_0x3F_OUT_ENABLE, 1, 0),
};
static struct snd_soc_dapm_route max98090_audio_map[] = {
/* Output */
{"HPL", NULL, "HPL Out"},
{"HPR", NULL, "HPR Out"},
/* PGA */
{"HPL Out", NULL, "HPL Mixer"},
{"HPR Out", NULL, "HPR Mixer"},
/* Mixer*/
{"HPL Mixer", "DACR Switch", "DACR"},
{"HPL Mixer", "DACL Switch", "DACL"},
{"HPR Mixer", "DACR Switch", "DACR"},
{"HPR Mixer", "DACL Switch", "DACL"},
};
static bool max98090_volatile(struct device *dev, unsigned int reg)
{
if ((reg == MAX98090_0x01_INT_STS) ||
(reg == MAX98090_0x02_JACK_STS) ||
(reg > MAX98090_REG_MAX_CACHED))
return true;
return false;
}
static int max98090_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int val;
switch (params_rate(params)) {
case 96000:
val = 1 << 5;
break;
case 32000:
val = 1 << 4;
break;
case 48000:
val = 1 << 3;
break;
case 44100:
val = 1 << 2;
break;
case 16000:
val = 1 << 1;
break;
case 8000:
val = 1 << 0;
break;
default:
dev_err(codec->dev, "unsupported rate\n");
return -EINVAL;
}
snd_soc_update_bits(codec, MAX98090_0x05_SAMPLE_RATE, 0x03F, val);
return 0;
}
static int max98090_dai_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int val;
snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
MAX98090_SHDNRUN, 0);
switch (freq) {
case 26000000:
val = 1 << 7;
break;
case 19200000:
val = 1 << 6;
break;
case 13000000:
val = 1 << 5;
break;
case 12288000:
val = 1 << 4;
break;
case 12000000:
val = 1 << 3;
break;
case 11289600:
val = 1 << 2;
break;
default:
dev_err(codec->dev, "Invalid master clock frequency\n");
return -EINVAL;
}
snd_soc_update_bits(codec, MAX98090_0x04_SYS_CLK, 0xFD, val);
snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
MAX98090_SHDNRUN, MAX98090_SHDNRUN);
dev_dbg(dai->dev, "sysclk is %uHz\n", freq);
return 0;
}
static int max98090_dai_set_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
int is_master;
u8 val;
/* master/slave mode */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
is_master = 1;
break;
case SND_SOC_DAIFMT_CBS_CFS:
is_master = 0;
break;
default:
dev_err(codec->dev, "unsupported clock\n");
return -EINVAL;
}
/* format */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_I2S:
val = (is_master) ? MAX98090_I2S_M : MAX98090_I2S_S;
break;
case SND_SOC_DAIFMT_RIGHT_J:
val = (is_master) ? MAX98090_RJ_M : MAX98090_RJ_S;
break;
case SND_SOC_DAIFMT_LEFT_J:
val = (is_master) ? MAX98090_LJ_M : MAX98090_LJ_S;
break;
default:
dev_err(codec->dev, "unsupported format\n");
return -EINVAL;
}
snd_soc_update_bits(codec, MAX98090_0x06_DAI_IF,
MAX98090_DAI_IF_MASK, val);
return 0;
}
#define MAX98090_RATES SNDRV_PCM_RATE_8000_96000
#define MAX98090_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_ops max98090_dai_ops = {
.set_sysclk = max98090_dai_set_sysclk,
.set_fmt = max98090_dai_set_fmt,
.hw_params = max98090_dai_hw_params,
};
static struct snd_soc_dai_driver max98090_dai = {
.name = "max98090-Hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = MAX98090_RATES,
.formats = MAX98090_FORMATS,
},
.ops = &max98090_dai_ops,
};
static int max98090_probe(struct snd_soc_codec *codec)
{
struct max98090_priv *priv = snd_soc_codec_get_drvdata(codec);
struct device *dev = codec->dev;
int ret;
codec->control_data = priv->regmap;
ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
/* Device active */
snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
MAX98090_SHDNRUN, MAX98090_SHDNRUN);
return 0;
}
static int max98090_remove(struct snd_soc_codec *codec)
{
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_max98090 = {
.probe = max98090_probe,
.remove = max98090_remove,
.controls = max98090_snd_controls,
.num_controls = ARRAY_SIZE(max98090_snd_controls),
.dapm_widgets = max98090_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(max98090_dapm_widgets),
.dapm_routes = max98090_audio_map,
.num_dapm_routes = ARRAY_SIZE(max98090_audio_map),
};
static const struct regmap_config max98090_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = MAX98090_REG_END,
.volatile_reg = max98090_volatile,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = max98090_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(max98090_reg_defaults),
};
static int max98090_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct max98090_priv *priv;
struct device *dev = &i2c->dev;
unsigned int val;
int ret;
priv = devm_kzalloc(dev, sizeof(struct max98090_priv),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->regmap = devm_regmap_init_i2c(i2c, &max98090_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(dev, "Failed to init regmap: %d\n", ret);
return ret;
}
i2c_set_clientdata(i2c, priv);
ret = regmap_read(priv->regmap, MAX98090_0xFF_REV_ID, &val);
if (ret < 0) {
dev_err(dev, "Failed to read device revision: %d\n", ret);
return ret;
}
dev_info(dev, "revision 0x%02x\n", val);
ret = snd_soc_register_codec(dev,
&soc_codec_dev_max98090,
&max98090_dai, 1);
return ret;
}
static int max98090_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id max98090_i2c_id[] = {
{ "max98090", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max98090_i2c_id);
static struct i2c_driver max98090_i2c_driver = {
.driver = {
.name = "max98090",
.owner = THIS_MODULE,
},
.probe = max98090_i2c_probe,
.remove = max98090_i2c_remove,
.id_table = max98090_i2c_id,
};
module_i2c_driver(max98090_i2c_driver);
MODULE_DESCRIPTION("ALSA SoC MAX98090 driver");
MODULE_AUTHOR("Peter Hsiang, Kuninori Morimoto");
MODULE_LICENSE("GPL");
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