[alsa-devel] [RFC][PATCH v2] 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 --- v1 -> v2

- M98090_xxx -> MAX98090_xxx - regmap version - snd_soc_write() -> snd_soc_update_bits() - revision information on i2c level probe - max98090_snd_controls on snd_soc_codec_driver

sound/soc/codecs/Kconfig | 4 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/max98090.c | 577 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 583 insertions(+) create mode 100644 sound/soc/codecs/max98090.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 0e368d4..3a84782 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -44,6 +44,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_LM4857 if I2C select SND_SOC_LM49453 if I2C select SND_SOC_MAX98088 if I2C + select SND_SOC_MAX98090 if I2C select SND_SOC_MAX98095 if I2C select SND_SOC_MAX9850 if I2C select SND_SOC_MAX9768 if I2C @@ -267,6 +268,9 @@ config SND_SOC_LM49453 config SND_SOC_MAX98088 tristate

+config SND_SOC_MAX98090 + tristate + config SND_SOC_MAX98095 tristate

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index aa56312..f6e8e36 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -34,6 +34,7 @@ snd-soc-lm4857-objs := lm4857.o snd-soc-lm49453-objs := lm49453.o snd-soc-max9768-objs := max9768.o snd-soc-max98088-objs := max98088.o +snd-soc-max98090-objs := max98090.o snd-soc-max98095-objs := max98095.o snd-soc-max9850-objs := max9850.o snd-soc-mc13783-objs := mc13783.o @@ -157,6 +158,7 @@ obj-$(CONFIG_SND_SOC_LM4857) += snd-soc-lm4857.o obj-$(CONFIG_SND_SOC_LM49453) += snd-soc-lm49453.o obj-$(CONFIG_SND_SOC_MAX9768) += snd-soc-max9768.o obj-$(CONFIG_SND_SOC_MAX98088) += snd-soc-max98088.o +obj-$(CONFIG_SND_SOC_MAX98090) += snd-soc-max98090.o obj-$(CONFIG_SND_SOC_MAX98095) += snd-soc-max98095.o obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o obj-$(CONFIG_SND_SOC_MC13783) += snd-soc-mc13783.o diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c new file mode 100644 index 0000000..c9772ca --- /dev/null +++ b/sound/soc/codecs/max98090.c @@ -0,0 +1,577 @@ +/* + * 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/%5C + * 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");