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linux/sound/soc/codecs/max98927.c
Uwe Kleine-König ed5c2f5fd1 i2c: Make remove callback return void 
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00

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// 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, &reg);
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_new = 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");
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