diff options
Diffstat (limited to 'sound/soc/codecs/max98927.c')
| -rw-r--r-- | sound/soc/codecs/max98927.c | 841 |
1 files changed, 841 insertions, 0 deletions
diff --git a/sound/soc/codecs/max98927.c b/sound/soc/codecs/max98927.c new file mode 100644 index 0000000..b5ee294 --- /dev/null +++ b/sound/soc/codecs/max98927.c @@ -0,0 +1,841 @@ +/* + * max98927.c -- MAX98927 ALSA Soc Audio driver + * + * Copyright (C) 2016 Maxim Integrated Products + * Author: Ryan Lee <ryans.lee@maximintegrated.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/acpi.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/cdev.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <linux/gpio.h> +#include <linux/of_gpio.h> +#include <sound/tlv.h> +#include "max98927.h" + +static struct reg_default max98927_reg[] = { + {MAX98927_R0001_INT_RAW1, 0x00}, + {MAX98927_R0002_INT_RAW2, 0x00}, + {MAX98927_R0003_INT_RAW3, 0x00}, + {MAX98927_R0004_INT_STATE1, 0x00}, + {MAX98927_R0005_INT_STATE2, 0x00}, + {MAX98927_R0006_INT_STATE3, 0x00}, + {MAX98927_R0007_INT_FLAG1, 0x00}, + {MAX98927_R0008_INT_FLAG2, 0x00}, + {MAX98927_R0009_INT_FLAG3, 0x00}, + {MAX98927_R000A_INT_EN1, 0x00}, + {MAX98927_R000B_INT_EN2, 0x00}, + {MAX98927_R000C_INT_EN3, 0x00}, + {MAX98927_R000D_INT_FLAG_CLR1, 0x00}, + {MAX98927_R000E_INT_FLAG_CLR2, 0x00}, + {MAX98927_R000F_INT_FLAG_CLR3, 0x00}, + {MAX98927_R0010_IRQ_CTRL, 0x00}, + {MAX98927_R0011_CLK_MON, 0x00}, + {MAX98927_R0012_WDOG_CTRL, 0x00}, + {MAX98927_R0013_WDOG_RST, 0x00}, + {MAX98927_R0014_MEAS_ADC_THERM_WARN_THRESH, 0x00}, + {MAX98927_R0015_MEAS_ADC_THERM_SHDN_THRESH, 0x00}, + {MAX98927_R0016_MEAS_ADC_THERM_HYSTERESIS, 0x00}, + {MAX98927_R0017_PIN_CFG, 0x55}, + {MAX98927_R0018_PCM_RX_EN_A, 0x00}, + {MAX98927_R0019_PCM_RX_EN_B, 0x00}, + {MAX98927_R001A_PCM_TX_EN_A, 0x00}, + {MAX98927_R001B_PCM_TX_EN_B, 0x00}, + {MAX98927_R001C_PCM_TX_HIZ_CTRL_A, 0x00}, + {MAX98927_R001D_PCM_TX_HIZ_CTRL_B, 0x00}, + {MAX98927_R001E_PCM_TX_CH_SRC_A, 0x00}, + {MAX98927_R001F_PCM_TX_CH_SRC_B, 0x00}, + {MAX98927_R0020_PCM_MODE_CFG, 0x40}, + {MAX98927_R0021_PCM_MASTER_MODE, 0x00}, + {MAX98927_R0022_PCM_CLK_SETUP, 0x22}, + {MAX98927_R0023_PCM_SR_SETUP1, 0x00}, + {MAX98927_R0024_PCM_SR_SETUP2, 0x00}, + {MAX98927_R0025_PCM_TO_SPK_MONOMIX_A, 0x00}, + {MAX98927_R0026_PCM_TO_SPK_MONOMIX_B, 0x00}, + {MAX98927_R0027_ICC_RX_EN_A, 0x00}, + {MAX98927_R0028_ICC_RX_EN_B, 0x00}, + {MAX98927_R002B_ICC_TX_EN_A, 0x00}, + {MAX98927_R002C_ICC_TX_EN_B, 0x00}, + {MAX98927_R002E_ICC_HIZ_MANUAL_MODE, 0x00}, + {MAX98927_R002F_ICC_TX_HIZ_EN_A, 0x00}, + {MAX98927_R0030_ICC_TX_HIZ_EN_B, 0x00}, + {MAX98927_R0031_ICC_LNK_EN, 0x00}, + {MAX98927_R0032_PDM_TX_EN, 0x00}, + {MAX98927_R0033_PDM_TX_HIZ_CTRL, 0x00}, + {MAX98927_R0034_PDM_TX_CTRL, 0x00}, + {MAX98927_R0035_PDM_RX_CTRL, 0x00}, + {MAX98927_R0036_AMP_VOL_CTRL, 0x00}, + {MAX98927_R0037_AMP_DSP_CFG, 0x02}, + {MAX98927_R0038_TONE_GEN_DC_CFG, 0x00}, + {MAX98927_R0039_DRE_CTRL, 0x01}, + {MAX98927_R003A_AMP_EN, 0x00}, + {MAX98927_R003B_SPK_SRC_SEL, 0x00}, + {MAX98927_R003C_SPK_GAIN, 0x00}, + {MAX98927_R003D_SSM_CFG, 0x01}, + {MAX98927_R003E_MEAS_EN, 0x00}, + {MAX98927_R003F_MEAS_DSP_CFG, 0x04}, + {MAX98927_R0040_BOOST_CTRL0, 0x00}, + {MAX98927_R0041_BOOST_CTRL3, 0x00}, + {MAX98927_R0042_BOOST_CTRL1, 0x00}, + {MAX98927_R0043_MEAS_ADC_CFG, 0x00}, + {MAX98927_R0044_MEAS_ADC_BASE_MSB, 0x00}, + {MAX98927_R0045_MEAS_ADC_BASE_LSB, 0x00}, + {MAX98927_R0046_ADC_CH0_DIVIDE, 0x00}, + {MAX98927_R0047_ADC_CH1_DIVIDE, 0x00}, + {MAX98927_R0048_ADC_CH2_DIVIDE, 0x00}, + {MAX98927_R0049_ADC_CH0_FILT_CFG, 0x00}, + {MAX98927_R004A_ADC_CH1_FILT_CFG, 0x00}, + {MAX98927_R004B_ADC_CH2_FILT_CFG, 0x00}, + {MAX98927_R004C_MEAS_ADC_CH0_READ, 0x00}, + {MAX98927_R004D_MEAS_ADC_CH1_READ, 0x00}, + {MAX98927_R004E_MEAS_ADC_CH2_READ, 0x00}, + {MAX98927_R0051_BROWNOUT_STATUS, 0x00}, + {MAX98927_R0052_BROWNOUT_EN, 0x00}, + {MAX98927_R0053_BROWNOUT_INFINITE_HOLD, 0x00}, + {MAX98927_R0054_BROWNOUT_INFINITE_HOLD_CLR, 0x00}, + {MAX98927_R0055_BROWNOUT_LVL_HOLD, 0x00}, + {MAX98927_R005A_BROWNOUT_LVL1_THRESH, 0x00}, + {MAX98927_R005B_BROWNOUT_LVL2_THRESH, 0x00}, + {MAX98927_R005C_BROWNOUT_LVL3_THRESH, 0x00}, + {MAX98927_R005D_BROWNOUT_LVL4_THRESH, 0x00}, + {MAX98927_R005E_BROWNOUT_THRESH_HYSTERYSIS, 0x00}, + {MAX98927_R005F_BROWNOUT_AMP_LIMITER_ATK_REL, 0x00}, + {MAX98927_R0060_BROWNOUT_AMP_GAIN_ATK_REL, 0x00}, + {MAX98927_R0061_BROWNOUT_AMP1_CLIP_MODE, 0x00}, + {MAX98927_R0072_BROWNOUT_LVL1_CUR_LIMIT, 0x00}, + {MAX98927_R0073_BROWNOUT_LVL1_AMP1_CTRL1, 0x00}, + {MAX98927_R0074_BROWNOUT_LVL1_AMP1_CTRL2, 0x00}, + {MAX98927_R0075_BROWNOUT_LVL1_AMP1_CTRL3, 0x00}, + {MAX98927_R0076_BROWNOUT_LVL2_CUR_LIMIT, 0x00}, + {MAX98927_R0077_BROWNOUT_LVL2_AMP1_CTRL1, 0x00}, + {MAX98927_R0078_BROWNOUT_LVL2_AMP1_CTRL2, 0x00}, + {MAX98927_R0079_BROWNOUT_LVL2_AMP1_CTRL3, 0x00}, + {MAX98927_R007A_BROWNOUT_LVL3_CUR_LIMIT, 0x00}, + {MAX98927_R007B_BROWNOUT_LVL3_AMP1_CTRL1, 0x00}, + {MAX98927_R007C_BROWNOUT_LVL3_AMP1_CTRL2, 0x00}, + {MAX98927_R007D_BROWNOUT_LVL3_AMP1_CTRL3, 0x00}, + {MAX98927_R007E_BROWNOUT_LVL4_CUR_LIMIT, 0x00}, + {MAX98927_R007F_BROWNOUT_LVL4_AMP1_CTRL1, 0x00}, + {MAX98927_R0080_BROWNOUT_LVL4_AMP1_CTRL2, 0x00}, + {MAX98927_R0081_BROWNOUT_LVL4_AMP1_CTRL3, 0x00}, + {MAX98927_R0082_ENV_TRACK_VOUT_HEADROOM, 0x00}, + {MAX98927_R0083_ENV_TRACK_BOOST_VOUT_DELAY, 0x00}, + {MAX98927_R0084_ENV_TRACK_REL_RATE, 0x00}, + {MAX98927_R0085_ENV_TRACK_HOLD_RATE, 0x00}, + {MAX98927_R0086_ENV_TRACK_CTRL, 0x00}, + {MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ, 0x00}, + {MAX98927_R00FF_GLOBAL_SHDN, 0x00}, + {MAX98927_R0100_SOFT_RESET, 0x00}, + {MAX98927_R01FF_REV_ID, 0x40}, +}; + +static int max98927_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec); + unsigned int mode = 0; + unsigned int format = 0; + unsigned int invert = 0; + + dev_dbg(codec->dev, "%s: fmt 0x%08X\n", __func__, fmt); + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + mode = MAX98927_PCM_MASTER_MODE_SLAVE; + break; + case SND_SOC_DAIFMT_CBM_CFM: + max98927->master = true; + mode = MAX98927_PCM_MASTER_MODE_MASTER; + break; + default: + dev_err(codec->dev, "DAI clock mode unsupported"); + return -EINVAL; + } + + regmap_update_bits(max98927->regmap, + MAX98927_R0021_PCM_MASTER_MODE, + MAX98927_PCM_MASTER_MODE_MASK, + mode); + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_NF: + invert = MAX98927_PCM_MODE_CFG_PCM_BCLKEDGE; + break; + default: + dev_err(codec->dev, "DAI invert mode unsupported"); + return -EINVAL; + } + + regmap_update_bits(max98927->regmap, + MAX98927_R0020_PCM_MODE_CFG, + MAX98927_PCM_MODE_CFG_PCM_BCLKEDGE, + invert); + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + max98927->iface |= SND_SOC_DAIFMT_I2S; + format = MAX98927_PCM_FORMAT_I2S; + break; + case SND_SOC_DAIFMT_LEFT_J: + max98927->iface |= SND_SOC_DAIFMT_LEFT_J; + format = MAX98927_PCM_FORMAT_LJ; + break; + case SND_SOC_DAIFMT_PDM: + max98927->iface |= SND_SOC_DAIFMT_PDM; + break; + default: + return -EINVAL; + } + + /* pcm channel configuration */ + if (max98927->iface & (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J)) { + regmap_update_bits(max98927->regmap, + MAX98927_R0018_PCM_RX_EN_A, + MAX98927_PCM_RX_CH0_EN | MAX98927_PCM_RX_CH1_EN, + MAX98927_PCM_RX_CH0_EN | MAX98927_PCM_RX_CH1_EN); + + regmap_update_bits(max98927->regmap, + MAX98927_R0020_PCM_MODE_CFG, + MAX98927_PCM_MODE_CFG_FORMAT_MASK, + format << MAX98927_PCM_MODE_CFG_FORMAT_SHIFT); + + regmap_update_bits(max98927->regmap, + MAX98927_R003B_SPK_SRC_SEL, + MAX98927_SPK_SRC_MASK, 0); + + } else + regmap_update_bits(max98927->regmap, + MAX98927_R0018_PCM_RX_EN_A, + MAX98927_PCM_RX_CH0_EN | MAX98927_PCM_RX_CH1_EN, 0); + + /* pdm channel configuration */ + if (max98927->iface & SND_SOC_DAIFMT_PDM) { + regmap_update_bits(max98927->regmap, + MAX98927_R0035_PDM_RX_CTRL, + MAX98927_PDM_RX_EN_MASK, 1); + + regmap_update_bits(max98927->regmap, + MAX98927_R003B_SPK_SRC_SEL, + MAX98927_SPK_SRC_MASK, 3); + } else + regmap_update_bits(max98927->regmap, + MAX98927_R0035_PDM_RX_CTRL, + MAX98927_PDM_RX_EN_MASK, 0); + return 0; +} + +/* codec MCLK rate in master mode */ +static const int rate_table[] = { + 5644800, 6000000, 6144000, 6500000, + 9600000, 11289600, 12000000, 12288000, + 13000000, 19200000, +}; + +static int max98927_set_clock(struct max98927_priv *max98927, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_codec *codec = max98927->codec; + /* BCLK/LRCLK ratio calculation */ + int blr_clk_ratio = params_channels(params) * max98927->ch_size; + int value; + + if (max98927->master) { + int i; + /* match rate to closest value */ + for (i = 0; i < ARRAY_SIZE(rate_table); i++) { + if (rate_table[i] >= max98927->sysclk) + break; + } + if (i == ARRAY_SIZE(rate_table)) { + dev_err(codec->dev, "failed to find proper clock rate.\n"); + return -EINVAL; + } + regmap_update_bits(max98927->regmap, + MAX98927_R0021_PCM_MASTER_MODE, + MAX98927_PCM_MASTER_MODE_MCLK_MASK, + i << MAX98927_PCM_MASTER_MODE_MCLK_RATE_SHIFT); + } + + switch (blr_clk_ratio) { + case 32: + value = 2; + break; + case 48: + value = 3; + break; + case 64: + value = 4; + break; + default: + return -EINVAL; + } + regmap_update_bits(max98927->regmap, + MAX98927_R0022_PCM_CLK_SETUP, + MAX98927_PCM_CLK_SETUP_BSEL_MASK, + value); + return 0; +} + +static int max98927_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; + struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec); + unsigned int sampling_rate = 0; + unsigned int chan_sz = 0; + + /* pcm mode configuration */ + switch (snd_pcm_format_width(params_format(params))) { + case 16: + chan_sz = MAX98927_PCM_MODE_CFG_CHANSZ_16; + break; + case 24: + chan_sz = MAX98927_PCM_MODE_CFG_CHANSZ_24; + break; + case 32: + chan_sz = MAX98927_PCM_MODE_CFG_CHANSZ_32; + break; + default: + dev_err(codec->dev, "format unsupported %d", + params_format(params)); + goto err; + } + + max98927->ch_size = snd_pcm_format_width(params_format(params)); + + regmap_update_bits(max98927->regmap, + MAX98927_R0020_PCM_MODE_CFG, + MAX98927_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); + + dev_dbg(codec->dev, "format supported %d", + params_format(params)); + + /* sampling rate configuration */ + switch (params_rate(params)) { + case 8000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_8000; + break; + case 11025: + sampling_rate = MAX98927_PCM_SR_SET1_SR_11025; + break; + case 12000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_12000; + break; + case 16000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_16000; + break; + case 22050: + sampling_rate = MAX98927_PCM_SR_SET1_SR_22050; + break; + case 24000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_24000; + break; + case 32000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_32000; + break; + case 44100: + sampling_rate = MAX98927_PCM_SR_SET1_SR_44100; + break; + case 48000: + sampling_rate = MAX98927_PCM_SR_SET1_SR_48000; + break; + default: + dev_err(codec->dev, "rate %d not supported\n", + params_rate(params)); + goto err; + } + /* set DAI_SR to correct LRCLK frequency */ + regmap_update_bits(max98927->regmap, + MAX98927_R0023_PCM_SR_SETUP1, + MAX98927_PCM_SR_SET1_SR_MASK, + sampling_rate); + regmap_update_bits(max98927->regmap, + MAX98927_R0024_PCM_SR_SETUP2, + MAX98927_PCM_SR_SET2_SR_MASK, + sampling_rate << MAX98927_PCM_SR_SET2_SR_SHIFT); + + /* set sampling rate of IV */ + if (max98927->interleave_mode && + sampling_rate > MAX98927_PCM_SR_SET1_SR_16000) + regmap_update_bits(max98927->regmap, + MAX98927_R0024_PCM_SR_SETUP2, + MAX98927_PCM_SR_SET2_IVADC_SR_MASK, + sampling_rate - 3); + else + regmap_update_bits(max98927->regmap, + MAX98927_R0024_PCM_SR_SETUP2, + MAX98927_PCM_SR_SET2_IVADC_SR_MASK, + sampling_rate); + return max98927_set_clock(max98927, params); +err: + return -EINVAL; +} + +#define MAX98927_RATES SNDRV_PCM_RATE_8000_48000 + +#define MAX98927_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static int max98927_dai_set_sysclk(struct snd_soc_dai *dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = dai->codec; + struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec); + + max98927->sysclk = freq; + return 0; +} + +static const struct snd_soc_dai_ops max98927_dai_ops = { + .set_sysclk = max98927_dai_set_sysclk, + .set_fmt = max98927_dai_set_fmt, + .hw_params = max98927_dai_hw_params, +}; + +static int max98927_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(max98927->regmap, + MAX98927_R003A_AMP_EN, + MAX98927_AMP_EN_MASK, 1); + /* enable VMON and IMON */ + regmap_update_bits(max98927->regmap, + MAX98927_R003E_MEAS_EN, + MAX98927_MEAS_V_EN | MAX98927_MEAS_I_EN, + MAX98927_MEAS_V_EN | MAX98927_MEAS_I_EN); + regmap_update_bits(max98927->regmap, + MAX98927_R00FF_GLOBAL_SHDN, + MAX98927_GLOBAL_EN_MASK, 1); + break; + case SND_SOC_DAPM_POST_PMD: + regmap_update_bits(max98927->regmap, + MAX98927_R00FF_GLOBAL_SHDN, + MAX98927_GLOBAL_EN_MASK, 0); + regmap_update_bits(max98927->regmap, + MAX98927_R003A_AMP_EN, + MAX98927_AMP_EN_MASK, 0); + /* disable VMON and IMON */ + regmap_update_bits(max98927->regmap, + MAX98927_R003E_MEAS_EN, + MAX98927_MEAS_V_EN | MAX98927_MEAS_I_EN, 0); + break; + default: + return 0; + } + return 0; +} + +static const char * const max98927_switch_text[] = { + "Left", "Right", "LeftRight"}; + +static const struct soc_enum dai_sel_enum = + SOC_ENUM_SINGLE(MAX98927_R0025_PCM_TO_SPK_MONOMIX_A, + MAX98927_PCM_TO_SPK_MONOMIX_CFG_SHIFT, + 3, max98927_switch_text); + +static const struct snd_kcontrol_new max98927_dai_controls = + SOC_DAPM_ENUM("DAI Sel", dai_sel_enum); + +static const struct snd_soc_dapm_widget max98927_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback", MAX98927_R003A_AMP_EN, + 0, 0, max98927_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0, + &max98927_dai_controls), + SND_SOC_DAPM_OUTPUT("BE_OUT"), +}; + +static DECLARE_TLV_DB_SCALE(max98927_spk_tlv, 300, 300, 0); +static DECLARE_TLV_DB_SCALE(max98927_digital_tlv, -1600, 25, 0); + +static bool max98927_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98927_R0001_INT_RAW1 ... MAX98927_R0028_ICC_RX_EN_B: + case MAX98927_R002B_ICC_TX_EN_A ... MAX98927_R002C_ICC_TX_EN_B: + case MAX98927_R002E_ICC_HIZ_MANUAL_MODE + ... MAX98927_R004E_MEAS_ADC_CH2_READ: + case MAX98927_R0051_BROWNOUT_STATUS + ... MAX98927_R0055_BROWNOUT_LVL_HOLD: + case MAX98927_R005A_BROWNOUT_LVL1_THRESH + ... MAX98927_R0061_BROWNOUT_AMP1_CLIP_MODE: + case MAX98927_R0072_BROWNOUT_LVL1_CUR_LIMIT + ... MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ: + case MAX98927_R00FF_GLOBAL_SHDN: + case MAX98927_R0100_SOFT_RESET: + case MAX98927_R01FF_REV_ID: + return true; + default: + return false; + } +}; + +static bool max98927_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98927_R0001_INT_RAW1 ... MAX98927_R0009_INT_FLAG3: + return true; + default: + return false; + } +} + +static const char * const max98927_boost_voltage_text[] = { + "6.5V", "6.625V", "6.75V", "6.875V", "7V", "7.125V", "7.25V", "7.375V", + "7.5V", "7.625V", "7.75V", "7.875V", "8V", "8.125V", "8.25V", "8.375V", + "8.5V", "8.625V", "8.75V", "8.875V", "9V", "9.125V", "9.25V", "9.375V", + "9.5V", "9.625V", "9.75V", "9.875V", "10V" +}; + +static SOC_ENUM_SINGLE_DECL(max98927_boost_voltage, + MAX98927_R0040_BOOST_CTRL0, 0, + max98927_boost_voltage_text); + +static const char * const max98927_current_limit_text[] = { + "1.00A", "1.10A", "1.20A", "1.30A", "1.40A", "1.50A", "1.60A", "1.70A", + "1.80A", "1.90A", "2.00A", "2.10A", "2.20A", "2.30A", "2.40A", "2.50A", + "2.60A", "2.70A", "2.80A", "2.90A", "3.00A", "3.10A", "3.20A", "3.30A", + "3.40A", "3.50A", "3.60A", "3.70A", "3.80A", "3.90A", "4.00A", "4.10A" +}; + +static SOC_ENUM_SINGLE_DECL(max98927_current_limit, + MAX98927_R0042_BOOST_CTRL1, 1, + max98927_current_limit_text); + +static const struct snd_kcontrol_new max98927_snd_controls[] = { + SOC_SINGLE_TLV("Speaker Volume", MAX98927_R003C_SPK_GAIN, + 0, 6, 0, + max98927_spk_tlv), + SOC_SINGLE_TLV("Digital Volume", MAX98927_R0036_AMP_VOL_CTRL, + 0, (1<<MAX98927_AMP_VOL_WIDTH)-1, 0, + max98927_digital_tlv), + SOC_SINGLE("Amp DSP Switch", MAX98927_R0052_BROWNOUT_EN, + MAX98927_BROWNOUT_DSP_SHIFT, 1, 0), + SOC_SINGLE("Ramp Switch", MAX98927_R0037_AMP_DSP_CFG, + MAX98927_AMP_DSP_CFG_RMP_SHIFT, 1, 0), + SOC_SINGLE("DRE Switch", MAX98927_R0039_DRE_CTRL, + MAX98927_DRE_EN_SHIFT, 1, 0), + SOC_SINGLE("Volume Location Switch", MAX98927_R0036_AMP_VOL_CTRL, + MAX98927_AMP_VOL_SEL_SHIFT, 1, 0), + SOC_ENUM("Boost Output Voltage", max98927_boost_voltage), + SOC_ENUM("Current Limit", max98927_current_limit), +}; + +static const struct snd_soc_dapm_route max98927_audio_map[] = { + {"Amp Enable", NULL, "DAI_OUT"}, + {"DAI Sel Mux", "Left", "Amp Enable"}, + {"DAI Sel Mux", "Right", "Amp Enable"}, + {"DAI Sel Mux", "LeftRight", "Amp Enable"}, + {"BE_OUT", NULL, "DAI Sel Mux"}, +}; + +static struct snd_soc_dai_driver max98927_dai[] = { + { + .name = "max98927-aif1", + .playback = { + .stream_name = "HiFi Playback", + .channels_min = 1, + .channels_max = 2, + .rates = MAX98927_RATES, + .formats = MAX98927_FORMATS, + }, + .capture = { + .stream_name = "HiFi Capture", + .channels_min = 1, + .channels_max = 2, + .rates = MAX98927_RATES, + .formats = MAX98927_FORMATS, + }, + .ops = &max98927_dai_ops, + } +}; + +static int max98927_probe(struct snd_soc_codec *codec) +{ + struct max98927_priv *max98927 = snd_soc_codec_get_drvdata(codec); + + max98927->codec = codec; + codec->control_data = max98927->regmap; + codec->cache_bypass = 1; + + /* Software Reset */ + regmap_write(max98927->regmap, + MAX98927_R0100_SOFT_RESET, MAX98927_SOFT_RESET); + + /* IV default slot configuration */ + regmap_write(max98927->regmap, + MAX98927_R001C_PCM_TX_HIZ_CTRL_A, + 0xFF); + regmap_write(max98927->regmap, + MAX98927_R001D_PCM_TX_HIZ_CTRL_B, + 0xFF); + regmap_write(max98927->regmap, + MAX98927_R0025_PCM_TO_SPK_MONOMIX_A, + 0x80); + regmap_write(max98927->regmap, + MAX98927_R0026_PCM_TO_SPK_MONOMIX_B, + 0x1); + /* Set inital volume (+13dB) */ + regmap_write(max98927->regmap, + MAX98927_R0036_AMP_VOL_CTRL, + 0x38); + regmap_write(max98927->regmap, + MAX98927_R003C_SPK_GAIN, + 0x05); + /* Enable DC blocker */ + regmap_write(max98927->regmap, + MAX98927_R0037_AMP_DSP_CFG, + 0x03); + /* Enable IMON VMON DC blocker */ + regmap_write(max98927->regmap, + MAX98927_R003F_MEAS_DSP_CFG, + 0xF7); + /* Boost Output Voltage & Current limit */ + regmap_write(max98927->regmap, + MAX98927_R0040_BOOST_CTRL0, + 0x1C); + regmap_write(max98927->regmap, + MAX98927_R0042_BOOST_CTRL1, + 0x3E); + /* Measurement ADC config */ + regmap_write(max98927->regmap, + MAX98927_R0043_MEAS_ADC_CFG, + 0x04); + regmap_write(max98927->regmap, + MAX98927_R0044_MEAS_ADC_BASE_MSB, + 0x00); + regmap_write(max98927->regmap, + MAX98927_R0045_MEAS_ADC_BASE_LSB, + 0x24); + /* Brownout Level */ + regmap_write(max98927->regmap, + MAX98927_R007F_BROWNOUT_LVL4_AMP1_CTRL1, + 0x06); + /* Envelope Tracking configuration */ + regmap_write(max98927->regmap, + MAX98927_R0082_ENV_TRACK_VOUT_HEADROOM, + 0x08); + regmap_write(max98927->regmap, + MAX98927_R0086_ENV_TRACK_CTRL, + 0x01); + regmap_write(max98927->regmap, + MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ, + 0x10); + + /* voltage, current slot configuration */ + regmap_write(max98927->regmap, + MAX98927_R001E_PCM_TX_CH_SRC_A, + (max98927->i_l_slot<<MAX98927_PCM_TX_CH_SRC_A_I_SHIFT| + max98927->v_l_slot)&0xFF); + + if (max98927->v_l_slot < 8) { + regmap_update_bits(max98927->regmap, + MAX98927_R001C_PCM_TX_HIZ_CTRL_A, + 1 << max98927->v_l_slot, 0); + regmap_update_bits(max98927->regmap, + MAX98927_R001A_PCM_TX_EN_A, + 1 << max98927->v_l_slot, + 1 << max98927->v_l_slot); + } else { + regmap_update_bits(max98927->regmap, + MAX98927_R001D_PCM_TX_HIZ_CTRL_B, + 1 << (max98927->v_l_slot - 8), 0); + regmap_update_bits(max98927->regmap, + MAX98927_R001B_PCM_TX_EN_B, + 1 << (max98927->v_l_slot - 8), + 1 << (max98927->v_l_slot - 8)); + } + + if (max98927->i_l_slot < 8) { + regmap_update_bits(max98927->regmap, + MAX98927_R001C_PCM_TX_HIZ_CTRL_A, + 1 << max98927->i_l_slot, 0); + regmap_update_bits(max98927->regmap, + MAX98927_R001A_PCM_TX_EN_A, + 1 << max98927->i_l_slot, + 1 << max98927->i_l_slot); + } else { + regmap_update_bits(max98927->regmap, + MAX98927_R001D_PCM_TX_HIZ_CTRL_B, + 1 << (max98927->i_l_slot - 8), 0); + regmap_update_bits(max98927->regmap, + MAX98927_R001B_PCM_TX_EN_B, + 1 << (max98927->i_l_slot - 8), + 1 << (max98927->i_l_slot - 8)); + } + + /* Set interleave mode */ + if (max98927->interleave_mode) + regmap_update_bits(max98927->regmap, + MAX98927_R001F_PCM_TX_CH_SRC_B, + MAX98927_PCM_TX_CH_INTERLEAVE_MASK, + MAX98927_PCM_TX_CH_INTERLEAVE_MASK); + return 0; +} + +static const struct snd_soc_codec_driver soc_codec_dev_max98927 = { + .probe = max98927_probe, + .component_driver = { + .controls = max98927_snd_controls, + .num_controls = ARRAY_SIZE(max98927_snd_controls), + .dapm_widgets = max98927_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(max98927_dapm_widgets), + .dapm_routes = max98927_audio_map, + .num_dapm_routes = ARRAY_SIZE(max98927_audio_map), + }, +}; + +static const struct regmap_config max98927_regmap = { + .reg_bits = 16, + .val_bits = 8, + .max_register = MAX98927_R01FF_REV_ID, + .reg_defaults = max98927_reg, + .num_reg_defaults = ARRAY_SIZE(max98927_reg), + .readable_reg = max98927_readable_register, + .volatile_reg = max98927_volatile_reg, + .cache_type = REGCACHE_RBTREE, +}; + +static void max98927_slot_config(struct i2c_client *i2c, + struct max98927_priv *max98927) +{ + int value; + + if (!of_property_read_u32(i2c->dev.of_node, + "vmon-slot-no", &value)) + max98927->v_l_slot = value & 0xF; + else + max98927->v_l_slot = 0; + if (!of_property_read_u32(i2c->dev.of_node, + "imon-slot-no", &value)) + max98927->i_l_slot = value & 0xF; + else + max98927->i_l_slot = 1; +} + +static int max98927_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + + int ret = 0, value; + int reg = 0; + struct max98927_priv *max98927 = NULL; + + max98927 = devm_kzalloc(&i2c->dev, + sizeof(*max98927), GFP_KERNEL); + + if (!max98927) { + ret = -ENOMEM; + return ret; + } + i2c_set_clientdata(i2c, max98927); + + /* update interleave mode info */ + if (!of_property_read_u32(i2c->dev.of_node, + "interleave_mode", &value)) { + if (value > 0) + max98927->interleave_mode = 1; + else + max98927->interleave_mode = 0; + } else + max98927->interleave_mode = 0; + + /* regmap initialization */ + max98927->regmap + = devm_regmap_init_i2c(i2c, &max98927_regmap); + if (IS_ERR(max98927->regmap)) { + ret = PTR_ERR(max98927->regmap); + dev_err(&i2c->dev, + "Failed to allocate regmap: %d\n", ret); + return ret; + } + + /* Check Revision ID */ + ret = regmap_read(max98927->regmap, + MAX98927_R01FF_REV_ID, ®); + if (ret < 0) { + dev_err(&i2c->dev, + "Failed to read: 0x%02X\n", MAX98927_R01FF_REV_ID); + return ret; + } + dev_info(&i2c->dev, "MAX98927 revisionID: 0x%02X\n", reg); + + /* voltage/current slot configuration */ + max98927_slot_config(i2c, max98927); + + /* codec registeration */ + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_max98927, + max98927_dai, ARRAY_SIZE(max98927_dai)); + if (ret < 0) + dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); + + return ret; +} + +static int max98927_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + return 0; +} + +static const struct i2c_device_id max98927_i2c_id[] = { + { "max98927", 0}, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, max98927_i2c_id); + +#if defined(CONFIG_OF) +static const struct of_device_id max98927_of_match[] = { + { .compatible = "maxim,max98927", }, + { } +}; +MODULE_DEVICE_TABLE(of, max98927_of_match); +#endif + +#ifdef CONFIG_ACPI +static const struct acpi_device_id max98927_acpi_match[] = { + { "MX98927", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, max98927_acpi_match); +#endif + +static struct i2c_driver max98927_i2c_driver = { + .driver = { + .name = "max98927", + .of_match_table = of_match_ptr(max98927_of_match), + .acpi_match_table = ACPI_PTR(max98927_acpi_match), + .pm = NULL, + }, + .probe = max98927_i2c_probe, + .remove = max98927_i2c_remove, + .id_table = max98927_i2c_id, +}; + +module_i2c_driver(max98927_i2c_driver) + +MODULE_DESCRIPTION("ALSA SoC MAX98927 driver"); +MODULE_AUTHOR("Ryan Lee <ryans.lee@maximintegrated.com>"); +MODULE_LICENSE("GPL"); |
