636 lines
17 KiB
C
636 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2017, Maxim Integrated
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#include <linux/acpi.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/of.h>
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#include <linux/of_gpio.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/cdev.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "max98373.h"
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static const u32 max98373_i2c_cache_reg[] = {
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MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK,
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MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK,
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MAX98373_R20B6_BDE_CUR_STATE_READBACK,
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};
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static struct reg_default max98373_reg[] = {
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{MAX98373_R2000_SW_RESET, 0x00},
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{MAX98373_R2001_INT_RAW1, 0x00},
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{MAX98373_R2002_INT_RAW2, 0x00},
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{MAX98373_R2003_INT_RAW3, 0x00},
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{MAX98373_R2004_INT_STATE1, 0x00},
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{MAX98373_R2005_INT_STATE2, 0x00},
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{MAX98373_R2006_INT_STATE3, 0x00},
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{MAX98373_R2007_INT_FLAG1, 0x00},
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{MAX98373_R2008_INT_FLAG2, 0x00},
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{MAX98373_R2009_INT_FLAG3, 0x00},
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{MAX98373_R200A_INT_EN1, 0x00},
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{MAX98373_R200B_INT_EN2, 0x00},
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{MAX98373_R200C_INT_EN3, 0x00},
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{MAX98373_R200D_INT_FLAG_CLR1, 0x00},
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{MAX98373_R200E_INT_FLAG_CLR2, 0x00},
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{MAX98373_R200F_INT_FLAG_CLR3, 0x00},
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{MAX98373_R2010_IRQ_CTRL, 0x00},
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{MAX98373_R2014_THERM_WARN_THRESH, 0x10},
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{MAX98373_R2015_THERM_SHDN_THRESH, 0x27},
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{MAX98373_R2016_THERM_HYSTERESIS, 0x01},
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{MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0},
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{MAX98373_R2018_THERM_FOLDBACK_EN, 0x00},
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{MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55},
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{MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE},
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{MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF},
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{MAX98373_R2022_PCM_TX_SRC_1, 0x00},
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{MAX98373_R2023_PCM_TX_SRC_2, 0x00},
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{MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0},
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{MAX98373_R2025_AUDIO_IF_MODE, 0x00},
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{MAX98373_R2026_PCM_CLOCK_RATIO, 0x04},
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{MAX98373_R2027_PCM_SR_SETUP_1, 0x08},
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{MAX98373_R2028_PCM_SR_SETUP_2, 0x88},
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{MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00},
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{MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00},
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{MAX98373_R202B_PCM_RX_EN, 0x00},
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{MAX98373_R202C_PCM_TX_EN, 0x00},
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{MAX98373_R202E_ICC_RX_CH_EN_1, 0x00},
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{MAX98373_R202F_ICC_RX_CH_EN_2, 0x00},
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{MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF},
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{MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF},
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{MAX98373_R2032_ICC_LINK_EN_CFG, 0x30},
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{MAX98373_R2034_ICC_TX_CNTL, 0x00},
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{MAX98373_R2035_ICC_TX_EN, 0x00},
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{MAX98373_R2036_SOUNDWIRE_CTRL, 0x05},
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{MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00},
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{MAX98373_R203E_AMP_PATH_GAIN, 0x08},
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{MAX98373_R203F_AMP_DSP_CFG, 0x02},
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{MAX98373_R2040_TONE_GEN_CFG, 0x00},
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{MAX98373_R2041_AMP_CFG, 0x03},
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{MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00},
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{MAX98373_R2043_AMP_EN, 0x00},
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{MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04},
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{MAX98373_R2047_IV_SENSE_ADC_EN, 0x00},
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{MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00},
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{MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00},
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{MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00},
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{MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00},
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{MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00},
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{MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00},
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{MAX98373_R2090_BDE_LVL_HOLD, 0x00},
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{MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00},
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{MAX98373_R2092_BDE_CLIPPER_MODE, 0x00},
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{MAX98373_R2097_BDE_L1_THRESH, 0x00},
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{MAX98373_R2098_BDE_L2_THRESH, 0x00},
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{MAX98373_R2099_BDE_L3_THRESH, 0x00},
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{MAX98373_R209A_BDE_L4_THRESH, 0x00},
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{MAX98373_R209B_BDE_THRESH_HYST, 0x00},
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{MAX98373_R20A8_BDE_L1_CFG_1, 0x00},
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{MAX98373_R20A9_BDE_L1_CFG_2, 0x00},
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{MAX98373_R20AA_BDE_L1_CFG_3, 0x00},
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{MAX98373_R20AB_BDE_L2_CFG_1, 0x00},
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{MAX98373_R20AC_BDE_L2_CFG_2, 0x00},
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{MAX98373_R20AD_BDE_L2_CFG_3, 0x00},
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{MAX98373_R20AE_BDE_L3_CFG_1, 0x00},
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{MAX98373_R20AF_BDE_L3_CFG_2, 0x00},
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{MAX98373_R20B0_BDE_L3_CFG_3, 0x00},
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{MAX98373_R20B1_BDE_L4_CFG_1, 0x00},
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{MAX98373_R20B2_BDE_L4_CFG_2, 0x00},
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{MAX98373_R20B3_BDE_L4_CFG_3, 0x00},
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{MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00},
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{MAX98373_R20B5_BDE_EN, 0x00},
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{MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00},
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{MAX98373_R20D1_DHT_CFG, 0x01},
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{MAX98373_R20D2_DHT_ATTACK_CFG, 0x02},
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{MAX98373_R20D3_DHT_RELEASE_CFG, 0x03},
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{MAX98373_R20D4_DHT_EN, 0x00},
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{MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00},
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{MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00},
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{MAX98373_R20E2_LIMITER_EN, 0x00},
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{MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00},
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{MAX98373_R20FF_GLOBAL_SHDN, 0x00},
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{MAX98373_R21FF_REV_ID, 0x42},
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};
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static int max98373_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
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{
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struct snd_soc_component *component = codec_dai->component;
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struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component);
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unsigned int format = 0;
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unsigned int invert = 0;
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dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt);
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_NF:
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invert = MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE;
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break;
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default:
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dev_err(component->dev, "DAI invert mode unsupported\n");
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return -EINVAL;
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}
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regmap_update_bits(max98373->regmap,
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MAX98373_R2026_PCM_CLOCK_RATIO,
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MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE,
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invert);
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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format = MAX98373_PCM_FORMAT_I2S;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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format = MAX98373_PCM_FORMAT_LJ;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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format = MAX98373_PCM_FORMAT_TDM_MODE1;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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format = MAX98373_PCM_FORMAT_TDM_MODE0;
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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(max98373->regmap,
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MAX98373_R2024_PCM_DATA_FMT_CFG,
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MAX98373_PCM_MODE_CFG_FORMAT_MASK,
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format << MAX98373_PCM_MODE_CFG_FORMAT_SHIFT);
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return 0;
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}
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/* BCLKs per LRCLK */
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static const int bclk_sel_table[] = {
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32, 48, 64, 96, 128, 192, 256, 384, 512, 320,
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};
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static int max98373_get_bclk_sel(int bclk)
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{
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int i;
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/* match BCLKs per LRCLK */
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for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) {
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if (bclk_sel_table[i] == bclk)
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return i + 2;
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}
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return 0;
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}
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static int max98373_set_clock(struct snd_soc_component *component,
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struct snd_pcm_hw_params *params)
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{
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struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component);
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/* BCLK/LRCLK ratio calculation */
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int blr_clk_ratio = params_channels(params) * max98373->ch_size;
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int value;
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if (!max98373->tdm_mode) {
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/* BCLK configuration */
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value = max98373_get_bclk_sel(blr_clk_ratio);
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if (!value) {
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dev_err(component->dev, "format unsupported %d\n",
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params_format(params));
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return -EINVAL;
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}
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regmap_update_bits(max98373->regmap,
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MAX98373_R2026_PCM_CLOCK_RATIO,
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MAX98373_PCM_CLK_SETUP_BSEL_MASK,
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value);
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}
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return 0;
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}
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static int max98373_dai_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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struct snd_soc_component *component = dai->component;
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struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component);
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unsigned int sampling_rate = 0;
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unsigned int chan_sz = 0;
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/* pcm mode configuration */
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switch (snd_pcm_format_width(params_format(params))) {
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case 16:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16;
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break;
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case 24:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24;
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break;
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case 32:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32;
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break;
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default:
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dev_err(component->dev, "format unsupported %d\n",
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params_format(params));
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goto err;
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}
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max98373->ch_size = snd_pcm_format_width(params_format(params));
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regmap_update_bits(max98373->regmap,
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MAX98373_R2024_PCM_DATA_FMT_CFG,
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MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
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dev_dbg(component->dev, "format supported %d",
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params_format(params));
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/* sampling rate configuration */
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switch (params_rate(params)) {
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case 8000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_8000;
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break;
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case 11025:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_11025;
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break;
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case 12000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_12000;
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break;
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case 16000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_16000;
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break;
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case 22050:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_22050;
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break;
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case 24000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_24000;
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break;
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case 32000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_32000;
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break;
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case 44100:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_44100;
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break;
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case 48000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_48000;
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break;
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case 88200:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_88200;
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break;
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case 96000:
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sampling_rate = MAX98373_PCM_SR_SET1_SR_96000;
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break;
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default:
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dev_err(component->dev, "rate %d not supported\n",
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params_rate(params));
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goto err;
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}
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/* set DAI_SR to correct LRCLK frequency */
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regmap_update_bits(max98373->regmap,
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MAX98373_R2027_PCM_SR_SETUP_1,
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MAX98373_PCM_SR_SET1_SR_MASK,
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sampling_rate);
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regmap_update_bits(max98373->regmap,
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MAX98373_R2028_PCM_SR_SETUP_2,
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MAX98373_PCM_SR_SET2_SR_MASK,
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sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT);
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/* set sampling rate of IV */
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if (max98373->interleave_mode &&
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sampling_rate > MAX98373_PCM_SR_SET1_SR_16000)
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regmap_update_bits(max98373->regmap,
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MAX98373_R2028_PCM_SR_SETUP_2,
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MAX98373_PCM_SR_SET2_IVADC_SR_MASK,
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sampling_rate - 3);
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else
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regmap_update_bits(max98373->regmap,
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MAX98373_R2028_PCM_SR_SETUP_2,
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MAX98373_PCM_SR_SET2_IVADC_SR_MASK,
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sampling_rate);
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return max98373_set_clock(component, params);
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err:
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return -EINVAL;
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}
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static int max98373_dai_tdm_slot(struct snd_soc_dai *dai,
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unsigned int tx_mask, unsigned int rx_mask,
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int slots, int slot_width)
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{
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struct snd_soc_component *component = dai->component;
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struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component);
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int bsel = 0;
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unsigned int chan_sz = 0;
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unsigned int mask;
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int x, slot_found;
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if (!tx_mask && !rx_mask && !slots && !slot_width)
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max98373->tdm_mode = false;
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else
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max98373->tdm_mode = true;
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/* BCLK configuration */
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bsel = max98373_get_bclk_sel(slots * slot_width);
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if (bsel == 0) {
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dev_err(component->dev, "BCLK %d not supported\n",
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slots * slot_width);
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return -EINVAL;
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}
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regmap_update_bits(max98373->regmap,
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MAX98373_R2026_PCM_CLOCK_RATIO,
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MAX98373_PCM_CLK_SETUP_BSEL_MASK,
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bsel);
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/* Channel size configuration */
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switch (slot_width) {
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case 16:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16;
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break;
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case 24:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24;
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break;
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case 32:
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chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32;
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break;
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default:
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dev_err(component->dev, "format unsupported %d\n",
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slot_width);
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return -EINVAL;
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}
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regmap_update_bits(max98373->regmap,
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MAX98373_R2024_PCM_DATA_FMT_CFG,
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MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
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/* Rx slot configuration */
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slot_found = 0;
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mask = rx_mask;
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for (x = 0 ; x < 16 ; x++, mask >>= 1) {
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if (mask & 0x1) {
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if (slot_found == 0)
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regmap_update_bits(max98373->regmap,
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MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1,
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MAX98373_PCM_TO_SPK_CH0_SRC_MASK, x);
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else
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regmap_write(max98373->regmap,
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MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2,
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x);
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slot_found++;
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if (slot_found > 1)
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break;
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}
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}
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/* Tx slot Hi-Z configuration */
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regmap_write(max98373->regmap,
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MAX98373_R2020_PCM_TX_HIZ_EN_1,
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~tx_mask & 0xFF);
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regmap_write(max98373->regmap,
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MAX98373_R2021_PCM_TX_HIZ_EN_2,
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(~tx_mask & 0xFF00) >> 8);
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return 0;
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}
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#define MAX98373_RATES SNDRV_PCM_RATE_8000_96000
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#define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
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static const struct snd_soc_dai_ops max98373_dai_ops = {
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.set_fmt = max98373_dai_set_fmt,
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.hw_params = max98373_dai_hw_params,
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.set_tdm_slot = max98373_dai_tdm_slot,
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};
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static bool max98373_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case MAX98373_R2000_SW_RESET:
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case MAX98373_R2001_INT_RAW1 ... MAX98373_R200C_INT_EN3:
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case MAX98373_R2010_IRQ_CTRL:
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case MAX98373_R2014_THERM_WARN_THRESH
|
|
... MAX98373_R2018_THERM_FOLDBACK_EN:
|
|
case MAX98373_R201E_PIN_DRIVE_STRENGTH
|
|
... MAX98373_R2036_SOUNDWIRE_CTRL:
|
|
case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN:
|
|
case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG
|
|
... MAX98373_R2047_IV_SENSE_ADC_EN:
|
|
case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE
|
|
... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN:
|
|
case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE:
|
|
case MAX98373_R2097_BDE_L1_THRESH
|
|
... MAX98373_R209B_BDE_THRESH_HYST:
|
|
case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3:
|
|
case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK:
|
|
case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN:
|
|
case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN:
|
|
case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG
|
|
... MAX98373_R20FF_GLOBAL_SHDN:
|
|
case MAX98373_R21FF_REV_ID:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
};
|
|
|
|
static bool max98373_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3:
|
|
case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK:
|
|
case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK:
|
|
case MAX98373_R20B6_BDE_CUR_STATE_READBACK:
|
|
case MAX98373_R20FF_GLOBAL_SHDN:
|
|
case MAX98373_R21FF_REV_ID:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static struct snd_soc_dai_driver max98373_dai[] = {
|
|
{
|
|
.name = "max98373-aif1",
|
|
.playback = {
|
|
.stream_name = "HiFi Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = MAX98373_RATES,
|
|
.formats = MAX98373_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "HiFi Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = MAX98373_RATES,
|
|
.formats = MAX98373_FORMATS,
|
|
},
|
|
.ops = &max98373_dai_ops,
|
|
}
|
|
};
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int max98373_suspend(struct device *dev)
|
|
{
|
|
struct max98373_priv *max98373 = dev_get_drvdata(dev);
|
|
int i;
|
|
|
|
/* cache feedback register values before suspend */
|
|
for (i = 0; i < max98373->cache_num; i++)
|
|
regmap_read(max98373->regmap, max98373->cache[i].reg, &max98373->cache[i].val);
|
|
|
|
regcache_cache_only(max98373->regmap, true);
|
|
regcache_mark_dirty(max98373->regmap);
|
|
return 0;
|
|
}
|
|
|
|
static int max98373_resume(struct device *dev)
|
|
{
|
|
struct max98373_priv *max98373 = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(max98373->regmap, false);
|
|
max98373_reset(max98373, dev);
|
|
regcache_sync(max98373->regmap);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops max98373_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume)
|
|
};
|
|
|
|
static const struct regmap_config max98373_regmap = {
|
|
.reg_bits = 16,
|
|
.val_bits = 8,
|
|
.max_register = MAX98373_R21FF_REV_ID,
|
|
.reg_defaults = max98373_reg,
|
|
.num_reg_defaults = ARRAY_SIZE(max98373_reg),
|
|
.readable_reg = max98373_readable_register,
|
|
.volatile_reg = max98373_volatile_reg,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static int max98373_i2c_probe(struct i2c_client *i2c)
|
|
{
|
|
int ret = 0;
|
|
int reg = 0;
|
|
int i;
|
|
struct max98373_priv *max98373 = NULL;
|
|
|
|
max98373 = devm_kzalloc(&i2c->dev, sizeof(*max98373), GFP_KERNEL);
|
|
|
|
if (!max98373) {
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
i2c_set_clientdata(i2c, max98373);
|
|
|
|
/* update interleave mode info */
|
|
if (device_property_read_bool(&i2c->dev, "maxim,interleave_mode"))
|
|
max98373->interleave_mode = true;
|
|
else
|
|
max98373->interleave_mode = false;
|
|
|
|
/* regmap initialization */
|
|
max98373->regmap = devm_regmap_init_i2c(i2c, &max98373_regmap);
|
|
if (IS_ERR(max98373->regmap)) {
|
|
ret = PTR_ERR(max98373->regmap);
|
|
dev_err(&i2c->dev,
|
|
"Failed to allocate regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
max98373->cache_num = ARRAY_SIZE(max98373_i2c_cache_reg);
|
|
max98373->cache = devm_kcalloc(&i2c->dev, max98373->cache_num,
|
|
sizeof(*max98373->cache),
|
|
GFP_KERNEL);
|
|
if (!max98373->cache) {
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < max98373->cache_num; i++)
|
|
max98373->cache[i].reg = max98373_i2c_cache_reg[i];
|
|
|
|
/* voltage/current slot & gpio configuration */
|
|
max98373_slot_config(&i2c->dev, max98373);
|
|
|
|
/* Power on device */
|
|
if (gpio_is_valid(max98373->reset_gpio)) {
|
|
ret = devm_gpio_request(&i2c->dev, max98373->reset_gpio,
|
|
"MAX98373_RESET");
|
|
if (ret) {
|
|
dev_err(&i2c->dev, "%s: Failed to request gpio %d\n",
|
|
__func__, max98373->reset_gpio);
|
|
return -EINVAL;
|
|
}
|
|
gpio_direction_output(max98373->reset_gpio, 0);
|
|
msleep(50);
|
|
gpio_direction_output(max98373->reset_gpio, 1);
|
|
msleep(20);
|
|
}
|
|
|
|
/* Check Revision ID */
|
|
ret = regmap_read(max98373->regmap,
|
|
MAX98373_R21FF_REV_ID, ®);
|
|
if (ret < 0) {
|
|
dev_err(&i2c->dev,
|
|
"Failed to read: 0x%02X\n", MAX98373_R21FF_REV_ID);
|
|
return ret;
|
|
}
|
|
dev_info(&i2c->dev, "MAX98373 revisionID: 0x%02X\n", reg);
|
|
|
|
/* codec registration */
|
|
ret = devm_snd_soc_register_component(&i2c->dev, &soc_codec_dev_max98373,
|
|
max98373_dai, ARRAY_SIZE(max98373_dai));
|
|
if (ret < 0)
|
|
dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct i2c_device_id max98373_i2c_id[] = {
|
|
{ "max98373", 0},
|
|
{ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, max98373_i2c_id);
|
|
|
|
#if defined(CONFIG_OF)
|
|
static const struct of_device_id max98373_of_match[] = {
|
|
{ .compatible = "maxim,max98373", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, max98373_of_match);
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI
|
|
static const struct acpi_device_id max98373_acpi_match[] = {
|
|
{ "MX98373", 0 },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, max98373_acpi_match);
|
|
#endif
|
|
|
|
static struct i2c_driver max98373_i2c_driver = {
|
|
.driver = {
|
|
.name = "max98373",
|
|
.of_match_table = of_match_ptr(max98373_of_match),
|
|
.acpi_match_table = ACPI_PTR(max98373_acpi_match),
|
|
.pm = &max98373_pm,
|
|
},
|
|
.probe_new = max98373_i2c_probe,
|
|
.id_table = max98373_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(max98373_i2c_driver)
|
|
|
|
MODULE_DESCRIPTION("ALSA SoC MAX98373 driver");
|
|
MODULE_AUTHOR("Ryan Lee <ryans.lee@maximintegrated.com>");
|
|
MODULE_LICENSE("GPL");
|