986 lines
28 KiB
C
986 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* max98927.c -- MAX98927 ALSA Soc Audio driver
|
|
*
|
|
* Copyright (C) 2016-2017 Maxim Integrated Products
|
|
* Author: Ryan Lee <ryans.lee@maximintegrated.com>
|
|
*/
|
|
|
|
#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/gpio/consumer.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, 0x75},
|
|
{MAX98927_R0015_MEAS_ADC_THERM_SHDN_THRESH, 0x8c},
|
|
{MAX98927_R0016_MEAS_ADC_THERM_HYSTERESIS, 0x08},
|
|
{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, 0x04},
|
|
{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, 0x01},
|
|
{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_component *component = codec_dai->component;
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
unsigned int mode = 0;
|
|
unsigned int format = 0;
|
|
bool use_pdm = false;
|
|
unsigned int invert = 0;
|
|
|
|
dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt);
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
|
|
case SND_SOC_DAIFMT_CBC_CFC:
|
|
max98927->provider = false;
|
|
mode = MAX98927_PCM_MASTER_MODE_SLAVE;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBP_CFP:
|
|
max98927->provider = true;
|
|
mode = MAX98927_PCM_MASTER_MODE_MASTER;
|
|
break;
|
|
default:
|
|
dev_err(component->dev, "DAI clock mode unsupported\n");
|
|
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(component->dev, "DAI invert mode unsupported\n");
|
|
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:
|
|
format = MAX98927_PCM_FORMAT_I2S;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
format = MAX98927_PCM_FORMAT_LJ;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
format = MAX98927_PCM_FORMAT_TDM_MODE1;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
format = MAX98927_PCM_FORMAT_TDM_MODE0;
|
|
break;
|
|
case SND_SOC_DAIFMT_PDM:
|
|
use_pdm = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
max98927->iface = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
|
|
|
|
if (!use_pdm) {
|
|
/* pcm channel configuration */
|
|
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);
|
|
|
|
regmap_update_bits(max98927->regmap,
|
|
MAX98927_R0035_PDM_RX_CTRL,
|
|
MAX98927_PDM_RX_EN_MASK, 0);
|
|
} else {
|
|
/* pdm channel configuration */
|
|
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);
|
|
|
|
regmap_update_bits(max98927->regmap,
|
|
MAX98927_R0018_PCM_RX_EN_A,
|
|
MAX98927_PCM_RX_CH0_EN | MAX98927_PCM_RX_CH1_EN, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* codec MCLK rate in master mode */
|
|
static const int rate_table[] = {
|
|
5644800, 6000000, 6144000, 6500000,
|
|
9600000, 11289600, 12000000, 12288000,
|
|
13000000, 19200000,
|
|
};
|
|
|
|
/* BCLKs per LRCLK */
|
|
static const int bclk_sel_table[] = {
|
|
32, 48, 64, 96, 128, 192, 256, 384, 512,
|
|
};
|
|
|
|
static int max98927_get_bclk_sel(int bclk)
|
|
{
|
|
int i;
|
|
/* match BCLKs per LRCLK */
|
|
for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) {
|
|
if (bclk_sel_table[i] == bclk)
|
|
return i + 2;
|
|
}
|
|
return 0;
|
|
}
|
|
static int max98927_set_clock(struct max98927_priv *max98927,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct snd_soc_component *component = max98927->component;
|
|
/* BCLK/LRCLK ratio calculation */
|
|
int blr_clk_ratio = params_channels(params) * max98927->ch_size;
|
|
int value;
|
|
|
|
if (max98927->provider) {
|
|
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(component->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);
|
|
}
|
|
|
|
if (!max98927->tdm_mode) {
|
|
/* BCLK configuration */
|
|
value = max98927_get_bclk_sel(blr_clk_ratio);
|
|
if (!value) {
|
|
dev_err(component->dev, "format unsupported %d\n",
|
|
params_format(params));
|
|
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_component *component = dai->component;
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
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(component->dev, "format unsupported %d\n",
|
|
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(component->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(component->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;
|
|
}
|
|
|
|
static int max98927_dai_tdm_slot(struct snd_soc_dai *dai,
|
|
unsigned int tx_mask, unsigned int rx_mask,
|
|
int slots, int slot_width)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
int bsel = 0;
|
|
unsigned int chan_sz = 0;
|
|
|
|
max98927->tdm_mode = true;
|
|
|
|
/* BCLK configuration */
|
|
bsel = max98927_get_bclk_sel(slots * slot_width);
|
|
if (bsel == 0) {
|
|
dev_err(component->dev, "BCLK %d not supported\n",
|
|
slots * slot_width);
|
|
return -EINVAL;
|
|
}
|
|
|
|
regmap_update_bits(max98927->regmap,
|
|
MAX98927_R0022_PCM_CLK_SETUP,
|
|
MAX98927_PCM_CLK_SETUP_BSEL_MASK,
|
|
bsel);
|
|
|
|
/* Channel size configuration */
|
|
switch (slot_width) {
|
|
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(component->dev, "format unsupported %d\n",
|
|
slot_width);
|
|
return -EINVAL;
|
|
}
|
|
|
|
regmap_update_bits(max98927->regmap,
|
|
MAX98927_R0020_PCM_MODE_CFG,
|
|
MAX98927_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
|
|
|
|
/* Rx slot configuration */
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R0018_PCM_RX_EN_A,
|
|
rx_mask & 0xFF);
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R0019_PCM_RX_EN_B,
|
|
(rx_mask & 0xFF00) >> 8);
|
|
|
|
/* Tx slot configuration */
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R001A_PCM_TX_EN_A,
|
|
tx_mask & 0xFF);
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R001B_PCM_TX_EN_B,
|
|
(tx_mask & 0xFF00) >> 8);
|
|
|
|
/* Tx slot Hi-Z configuration */
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R001C_PCM_TX_HIZ_CTRL_A,
|
|
~tx_mask & 0xFF);
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R001D_PCM_TX_HIZ_CTRL_B,
|
|
(~tx_mask & 0xFF00) >> 8);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#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_component *component = dai->component;
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
|
|
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,
|
|
.set_tdm_slot = max98927_dai_tdm_slot,
|
|
};
|
|
|
|
static int max98927_dac_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
max98927->tdm_mode = false;
|
|
break;
|
|
case SND_SOC_DAPM_POST_PMU:
|
|
regmap_update_bits(max98927->regmap,
|
|
MAX98927_R003A_AMP_EN,
|
|
MAX98927_AMP_EN_MASK, 1);
|
|
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);
|
|
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_kcontrol_new max98927_vi_control =
|
|
SOC_DAPM_SINGLE("Switch", MAX98927_R003F_MEAS_DSP_CFG, 2, 1, 0);
|
|
|
|
static const struct snd_soc_dapm_widget max98927_dapm_widgets[] = {
|
|
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"),
|
|
SND_SOC_DAPM_AIF_OUT("Voltage Sense", "HiFi Capture", 0,
|
|
MAX98927_R003E_MEAS_EN, 0, 0),
|
|
SND_SOC_DAPM_AIF_OUT("Current Sense", "HiFi Capture", 0,
|
|
MAX98927_R003E_MEAS_EN, 1, 0),
|
|
SND_SOC_DAPM_SWITCH("VI Sense", SND_SOC_NOPM, 0, 0,
|
|
&max98927_vi_control),
|
|
SND_SOC_DAPM_SIGGEN("VMON"),
|
|
SND_SOC_DAPM_SIGGEN("IMON"),
|
|
};
|
|
|
|
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:
|
|
case MAX98927_R004C_MEAS_ADC_CH0_READ:
|
|
case MAX98927_R004D_MEAS_ADC_CH1_READ:
|
|
case MAX98927_R004E_MEAS_ADC_CH2_READ:
|
|
case MAX98927_R0051_BROWNOUT_STATUS:
|
|
case MAX98927_R0087_ENV_TRACK_BOOST_VOUT_READ:
|
|
case MAX98927_R01FF_REV_ID:
|
|
case MAX98927_R0100_SOFT_RESET:
|
|
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[] = {
|
|
/* Plabyack */
|
|
{"DAI Sel Mux", "Left", "Amp Enable"},
|
|
{"DAI Sel Mux", "Right", "Amp Enable"},
|
|
{"DAI Sel Mux", "LeftRight", "Amp Enable"},
|
|
{"BE_OUT", NULL, "DAI Sel Mux"},
|
|
/* Capture */
|
|
{ "VI Sense", "Switch", "VMON" },
|
|
{ "VI Sense", "Switch", "IMON" },
|
|
{ "Voltage Sense", NULL, "VI Sense" },
|
|
{ "Current Sense", NULL, "VI Sense" },
|
|
};
|
|
|
|
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_component *component)
|
|
{
|
|
struct max98927_priv *max98927 = snd_soc_component_get_drvdata(component);
|
|
|
|
max98927->component = component;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int max98927_suspend(struct device *dev)
|
|
{
|
|
struct max98927_priv *max98927 = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(max98927->regmap, true);
|
|
regcache_mark_dirty(max98927->regmap);
|
|
return 0;
|
|
}
|
|
static int max98927_resume(struct device *dev)
|
|
{
|
|
struct max98927_priv *max98927 = dev_get_drvdata(dev);
|
|
|
|
regmap_write(max98927->regmap,
|
|
MAX98927_R0100_SOFT_RESET, MAX98927_SOFT_RESET);
|
|
regcache_cache_only(max98927->regmap, false);
|
|
regcache_sync(max98927->regmap);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops max98927_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(max98927_suspend, max98927_resume)
|
|
};
|
|
|
|
static const struct snd_soc_component_driver soc_component_dev_max98927 = {
|
|
.probe = max98927_probe,
|
|
.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),
|
|
.idle_bias_on = 1,
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
};
|
|
|
|
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;
|
|
struct device *dev = &i2c->dev;
|
|
|
|
if (!device_property_read_u32(dev, "vmon-slot-no", &value))
|
|
max98927->v_l_slot = value & 0xF;
|
|
else
|
|
max98927->v_l_slot = 0;
|
|
|
|
if (!device_property_read_u32(dev, "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)
|
|
{
|
|
|
|
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 = true;
|
|
else
|
|
max98927->interleave_mode = false;
|
|
} else
|
|
max98927->interleave_mode = false;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
max98927->reset_gpio
|
|
= devm_gpiod_get_optional(&i2c->dev, "reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(max98927->reset_gpio)) {
|
|
ret = PTR_ERR(max98927->reset_gpio);
|
|
return dev_err_probe(&i2c->dev, ret, "failed to request GPIO reset pin");
|
|
}
|
|
|
|
if (max98927->reset_gpio) {
|
|
gpiod_set_value_cansleep(max98927->reset_gpio, 0);
|
|
/* Wait for i2c port to be ready */
|
|
usleep_range(5000, 6000);
|
|
}
|
|
|
|
/* 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 = devm_snd_soc_register_component(&i2c->dev,
|
|
&soc_component_dev_max98927,
|
|
max98927_dai, ARRAY_SIZE(max98927_dai));
|
|
if (ret < 0)
|
|
dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void max98927_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct max98927_priv *max98927 = i2c_get_clientdata(i2c);
|
|
|
|
if (max98927->reset_gpio) {
|
|
gpiod_set_value_cansleep(max98927->reset_gpio, 1);
|
|
}
|
|
}
|
|
|
|
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 = &max98927_pm,
|
|
},
|
|
.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");
|