[PATCH V2 2/2] ASoC: max98388: add amplifier driver

From: “Ryan
Date: Fri Jun 09 2023 - 19:45:30 EST

From: Ryan Lee <ryans.lee@xxxxxxxxxx>

Added Analog Devices MAX98388 amplifier driver.
MAX98388 provides a PCM interface for audio data and a standard I2C
interface for control data communication.

Signed-off-by: Ryan Lee <ryans.lee@xxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes:
https://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/2023
06082054.jIU9oENf-lkp@xxxxxxxxx/__;!!A3Ni8CS0y2Y!46sHiAsmIiXxZ_QXIobho
mY8F1f7F2yMYd_65NNFwRlcgut33--RdFjVAbg6jKf7Vs8GaYZ7oA$
---
Changes from v1:
Fixed build warnings.

sound/soc/codecs/Kconfig | 10 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/max98388.c | 1042 +++++++++++++++++++++++++++++++++++
sound/soc/codecs/max98388.h | 234 ++++++++
4 files changed, 1288 insertions(+)
create mode 100644 sound/soc/codecs/max98388.c
create mode 100644 sound/soc/codecs/max98388.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 1f68d18515a6..e579ef11beb4 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -137,6 +137,7 @@ config SND_SOC_ALL_CODECS
imply SND_SOC_MAX98363
imply SND_SOC_MAX98373_I2C
imply SND_SOC_MAX98373_SDW
+ imply SND_SOC_MAX98388
imply SND_SOC_MAX98390
imply SND_SOC_MAX98396
imply SND_SOC_MAX9850
@@ -1175,6 +1176,15 @@ config SND_SOC_MAX98373_SDW
interface for control data. Select this if MAX98373 is
connected via soundwire.

+config SND_SOC_MAX98388
+ tristate "Analog Devices MAX98388 Speaker Amplifier"
+ depends on I2C
+ help
+ Enable support for Analog Devices MAX98388 audio
+ amplifier. The device provides a PCM interface for
+ audio data and a standard I2C interface for control
+ data communication.
+
config SND_SOC_MAX98390
tristate "Maxim Integrated MAX98390 Speaker Amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 67f336a12d74..0fd003d432e5 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -153,6 +153,7 @@ snd-soc-max98363-objs := max98363.o
snd-soc-max98373-objs := max98373.o
snd-soc-max98373-i2c-objs := max98373-i2c.o
snd-soc-max98373-sdw-objs := max98373-sdw.o
+snd-soc-max98388-objs := max98388.o
snd-soc-max98390-objs := max98390.o
snd-soc-max98396-objs := max98396.o
snd-soc-max9850-objs := max9850.o
@@ -525,6 +526,7 @@ obj-$(CONFIG_SND_SOC_MAX98363) += snd-soc-max98363.o
obj-$(CONFIG_SND_SOC_MAX98373) += snd-soc-max98373.o
obj-$(CONFIG_SND_SOC_MAX98373_I2C) += snd-soc-max98373-i2c.o
obj-$(CONFIG_SND_SOC_MAX98373_SDW) += snd-soc-max98373-sdw.o
+obj-$(CONFIG_SND_SOC_MAX98388) += snd-soc-max98388.o
obj-$(CONFIG_SND_SOC_MAX98390) += snd-soc-max98390.o
obj-$(CONFIG_SND_SOC_MAX98396) += snd-soc-max98396.o
obj-$(CONFIG_SND_SOC_MAX9850) += snd-soc-max9850.o
diff --git a/sound/soc/codecs/max98388.c b/sound/soc/codecs/max98388.c
new file mode 100644
index 000000000000..77fdb221ff93
--- /dev/null
+++ b/sound/soc/codecs/max98388.c
@@ -0,0 +1,1042 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2022, Analog Devices Inc.
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/pm_runtime.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 <sound/tlv.h>
+#include "max98388.h"
+
+static struct reg_default max98388_reg[] = {
+ {MAX98388_R2000_SW_RESET, 0x00},
+ {MAX98388_R2001_INT_RAW1, 0x00},
+ {MAX98388_R2002_INT_RAW2, 0x00},
+ {MAX98388_R2004_INT_STATE1, 0x00},
+ {MAX98388_R2005_INT_STATE2, 0x00},
+ {MAX98388_R2020_THERM_WARN_THRESH, 0x0A},
+ {MAX98388_R2031_SPK_MON_THRESH, 0x58},
+ {MAX98388_R2032_SPK_MON_LD_SEL, 0x08},
+ {MAX98388_R2033_SPK_MON_DURATION, 0x02},
+ {MAX98388_R2037_ERR_MON_CTRL, 0x01},
+ {MAX98388_R2040_PCM_MODE_CFG, 0xC0},
+ {MAX98388_R2041_PCM_CLK_SETUP, 0x04},
+ {MAX98388_R2042_PCM_SR_SETUP, 0x88},
+ {MAX98388_R2044_PCM_TX_CTRL1, 0x00},
+ {MAX98388_R2045_PCM_TX_CTRL2, 0x00},
+ {MAX98388_R2050_PCM_TX_HIZ_CTRL1, 0xFF},
+ {MAX98388_R2051_PCM_TX_HIZ_CTRL2, 0xFF},
+ {MAX98388_R2052_PCM_TX_HIZ_CTRL3, 0xFF},
+ {MAX98388_R2053_PCM_TX_HIZ_CTRL4, 0xFF},
+ {MAX98388_R2054_PCM_TX_HIZ_CTRL5, 0xFF},
+ {MAX98388_R2055_PCM_TX_HIZ_CTRL6, 0xFF},
+ {MAX98388_R2056_PCM_TX_HIZ_CTRL7, 0xFF},
+ {MAX98388_R2057_PCM_TX_HIZ_CTRL8, 0xFF},
+ {MAX98388_R2058_PCM_RX_SRC1, 0x00},
+ {MAX98388_R2059_PCM_RX_SRC2, 0x01},
+ {MAX98388_R205C_PCM_TX_DRIVE_STRENGTH, 0x00},
+ {MAX98388_R205D_PCM_TX_SRC_EN, 0x00},
+ {MAX98388_R205E_PCM_RX_EN, 0x00},
+ {MAX98388_R205F_PCM_TX_EN, 0x00},
+ {MAX98388_R2090_SPK_CH_VOL_CTRL, 0x00},
+ {MAX98388_R2091_SPK_CH_CFG, 0x02},
+ {MAX98388_R2092_SPK_AMP_OUT_CFG, 0x03},
+ {MAX98388_R2093_SPK_AMP_SSM_CFG, 0x01},
+ {MAX98388_R2094_SPK_AMP_ER_CTRL, 0x00},
+ {MAX98388_R209E_SPK_CH_PINK_NOISE_EN, 0x00},
+ {MAX98388_R209F_SPK_CH_AMP_EN, 0x00},
+ {MAX98388_R20A0_IV_DATA_DSP_CTRL, 0x10},
+ {MAX98388_R20A7_IV_DATA_EN, 0x00},
+ {MAX98388_R20E0_BP_ALC_THRESH, 0x04},
+ {MAX98388_R20E1_BP_ALC_RATES, 0x20},
+ {MAX98388_R20E2_BP_ALC_ATTEN, 0x06},
+ {MAX98388_R20E3_BP_ALC_REL, 0x02},
+ {MAX98388_R20E4_BP_ALC_MUTE, 0x33},
+ {MAX98388_R20EE_BP_INF_HOLD_REL, 0x00},
+ {MAX98388_R20EF_BP_ALC_EN, 0x00},
+ {MAX98388_R210E_AUTO_RESTART, 0x00},
+ {MAX98388_R210F_GLOBAL_EN, 0x00},
+ {MAX98388_R22FF_REV_ID, 0x00},
+};
+
+static int max98388_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 max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ regmap_write(max98388->regmap,
+ MAX98388_R210F_GLOBAL_EN, 1);
+ usleep_range(30000, 31000);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ regmap_write(max98388->regmap,
+ MAX98388_R210F_GLOBAL_EN, 0);
+ usleep_range(30000, 31000);
+ max98388->tdm_mode = false;
+ break;
+ default:
+ return 0;
+ }
+ return 0;
+}
+
+static const char * const max98388_monomix_switch_text[] = {
+ "Left", "Right", "LeftRight"};
+
+static const struct soc_enum dai_sel_enum =
+ SOC_ENUM_SINGLE(MAX98388_R2058_PCM_RX_SRC1,
+ MAX98388_PCM_TO_SPK_MONOMIX_CFG_SHIFT,
+ 3, max98388_monomix_switch_text);
+
+static const struct snd_kcontrol_new max98388_dai_controls =
+ SOC_DAPM_ENUM("DAI Sel", dai_sel_enum);
+
+static const struct snd_kcontrol_new max98388_vi_control =
+ SOC_DAPM_SINGLE("Switch", MAX98388_R205F_PCM_TX_EN, 0, 1, 0);
+
+static const struct snd_soc_dapm_widget max98388_dapm_widgets[] = {
+ SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback",
+ MAX98388_R205E_PCM_RX_EN, 0, 0, max98388_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0,
+ &max98388_dai_controls),
+ SND_SOC_DAPM_OUTPUT("BE_OUT"),
+ SND_SOC_DAPM_AIF_OUT("Voltage Sense", "HiFi Capture", 0,
+ MAX98388_R20A7_IV_DATA_EN, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("Current Sense", "HiFi Capture", 0,
+ MAX98388_R20A7_IV_DATA_EN, 1, 0),
+ SND_SOC_DAPM_ADC("ADC Voltage", NULL,
+ MAX98388_R205D_PCM_TX_SRC_EN, 0, 0),
+ SND_SOC_DAPM_ADC("ADC Current", NULL,
+ MAX98388_R205D_PCM_TX_SRC_EN, 1, 0),
+ SND_SOC_DAPM_SWITCH("VI Sense", SND_SOC_NOPM, 0, 0,
+ &max98388_vi_control),
+ SND_SOC_DAPM_SIGGEN("VMON"),
+ SND_SOC_DAPM_SIGGEN("IMON"),
+};
+
+static DECLARE_TLV_DB_SCALE(max98388_digital_tlv, -6350, 50, 1);
+static DECLARE_TLV_DB_SCALE(max98388_amp_gain_tlv, -300, 300, 0);
+
+static const char * const max98388_alc_max_atten_text[] = {
+ "0dBFS", "-1dBFS", "-2dBFS", "-3dBFS", "-4dBFS", "-5dBFS",
+ "-6dBFS", "-7dBFS", "-8dBFS", "-9dBFS", "-10dBFS", "-11dBFS",
+ "-12dBFS", "-13dBFS", "-14dBFS", "-15dBFS"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_max_atten_enum,
+ MAX98388_R20E2_BP_ALC_ATTEN,
+ MAX98388_ALC_MAX_ATTEN_SHIFT,
+ max98388_alc_max_atten_text);
+
+static const char * const max98388_thermal_warn_text[] = {
+ "95C", "105C", "115C", "125C"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_thermal_warning_thresh_enum,
+ MAX98388_R2020_THERM_WARN_THRESH,
+ MAX98388_THERM_WARN_THRESH_SHIFT,
+ max98388_thermal_warn_text);
+
+static const char * const max98388_thermal_shutdown_text[] = {
+ "135C", "145C", "155C", "165C"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_thermal_shutdown_thresh_enum,
+ MAX98388_R2020_THERM_WARN_THRESH,
+ MAX98388_THERM_SHDN_THRESH_SHIFT,
+ max98388_thermal_shutdown_text);
+
+static const char * const max98388_alc_thresh_single_text[] = {
+ "3.625V", "3.550V", "3.475V", "3.400V", "3.325V", "3.250V",
+ "3.175V", "3.100V", "3.025V", "2.950V", "2.875V", "2.800V",
+ "2.725V", "2.650V", "2.575V", "2.500V"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_thresh_single_enum,
+ MAX98388_R20E0_BP_ALC_THRESH,
+ MAX98388_ALC_THRESH_SHIFT,
+ max98388_alc_thresh_single_text);
+
+static const char * const max98388_alc_attack_rate_text[] = {
+ "0", "10us", "20us", "40us", "80us", "160us",
+ "320us", "640us", "1.28ms", "2.56ms", "5.12ms", "10.24ms",
+ "20.48ms", "40.96ms", "81.92ms", "163.84ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_attack_rate_enum,
+ MAX98388_R20E1_BP_ALC_RATES,
+ MAX98388_ALC_ATTACK_RATE_SHIFT,
+ max98388_alc_attack_rate_text);
+
+static const char * const max98388_alc_release_rate_text[] = {
+ "20us", "40us", "80us", "160us", "320us", "640us",
+ "1.28ms", "2.56ms", "5.12ms", "10.24ms", "20.48ms", "40.96ms",
+ "81.92ms", "163.84ms", "327.68ms", "655.36ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_release_rate_enum,
+ MAX98388_R20E1_BP_ALC_RATES,
+ MAX98388_ALC_RELEASE_RATE_SHIFT,
+ max98388_alc_release_rate_text);
+
+static const char * const max98388_alc_debounce_text[] = {
+ "0.01ms", "0.1ms", "1ms", "10ms", "100ms", "250ms", "500ms", "hold"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_debouce_enum,
+ MAX98388_R20E3_BP_ALC_REL,
+ MAX98388_ALC_DEBOUNCE_TIME_SHIFT,
+ max98388_alc_debounce_text);
+
+static const char * const max98388_alc_mute_delay_text[] = {
+ "0.01ms", "0.05ms", "0.1ms", "0.5ms", "1ms", "5ms", "25ms", "250ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_alc_mute_delay_enum,
+ MAX98388_R20E4_BP_ALC_MUTE,
+ MAX98388_ALC_MUTE_DELAY_SHIFT,
+ max98388_alc_mute_delay_text);
+
+static const char * const max98388_spkmon_duration_text[] = {
+ "10ms", "25ms", "50ms", "75ms", "100ms", "200ms", "300ms", "400ms",
+ "500ms", "600ms", "700ms", "800ms", "900ms", "1000ms", "1100ms", "1200ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_spkmon_duration_enum,
+ MAX98388_R2033_SPK_MON_DURATION,
+ MAX98388_SPKMON_DURATION_SHIFT,
+ max98388_spkmon_duration_text);
+
+static const char * const max98388_spkmon_thresh_text[] = {
+ "0.03V", "0.06V", "0.09V", "0.12V", "0.15V", "0.18V", "0.20V", "0.23V",
+ "0.26V", "0.29V", "0.32V", "0.35V", "0.38V", "0.41V", "0.44V", "0.47V",
+ "0.50V", "0.53V", "0.56V", "0.58V", "0.61V", "0.64V", "0.67V", "0.70V",
+ "0.73V", "0.76V", "0.79V", "0.82V", "0.85V", "0.88V", "0.91V", "0.94V",
+ "0.96V", "0.99V", "1.02V", "1.05V", "1.08V", "1.11V", "1.14V", "1.17V",
+ "1.20V", "1.23V", "1.26V", "1.29V", "1.32V", "1.35V", "1.37V", "1.40V",
+ "1.43V", "1.46V", "1.49V", "1.52V", "1.55V", "1.58V", "1.61V", "1.64V",
+ "1.67V", "1.70V", "1.73V", "1.75V", "1.78V", "1.81V", "1.84V", "1.87V",
+ "1.90V", "1.93V", "1.96V", "1.99V", "2.02V", "2.05V", "2.08V", "2.11V",
+ "2.13V", "2.16V", "2.19V", "2.22V", "2.25V", "2.28V", "2.31V", "2.34V",
+ "2.37V", "2.40V", "2.43V", "2.46V", "2.49V", "2.51V", "2.54V", "2.57V",
+ "2.60V", "2.63V", "2.66V", "2.69V", "2.72V", "2.75V", "2.78V", "2.81V",
+ "2.84V", "2.87V", "2.89V", "2.92V", "2.95V", "2.98V", "3.01V", "3.04V",
+ "3.07V", "3.10V", "3.13V", "3.16V", "3.19V", "3.22V", "3.25V", "3.27V",
+ "3.30V", "3.33V", "3.36V", "3.39V", "3.42V", "3.45V", "3.48V", "3.51V",
+ "3.54V", "3.57V", "3.60V", "3.63V", "3.66V", "3.68V", "3.71V", "3.74V"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_spkmon_thresh_enum,
+ MAX98388_R2031_SPK_MON_THRESH,
+ MAX98388_SPKMON_THRESH_SHIFT,
+ max98388_spkmon_thresh_text);
+
+static const char * const max98388_spkmon_load_text[] = {
+ "2.00ohm", "2.25ohm", "2.50ohm", "2.75ohm", "3.00ohm", "3.25ohm",
+ "3.50ohm", "3.75ohm", "4.00ohm", "4.25ohm", "4.50ohm", "4.75ohm",
+ "5.00ohm", "5.25ohm", "5.50ohm", "5.75ohm", "6.00ohm", "6.25ohm",
+ "6.50ohm", "6.75ohm", "7.00ohm", "7.25ohm", "7.50ohm", "7.75ohm",
+ "8.00ohm", "8.25ohm", "8.50ohm", "8.75ohm", "9.00ohm", "9.25ohm",
+ "9.50ohm", "9.75ohm", "10.00ohm", "10.25ohm", "10.50ohm", "10.75ohm",
+ "11.00ohm", "11.25ohm", "11.50ohm", "11.75ohm", "12.00ohm", "12.25ohm",
+ "12.50ohm", "12.75ohm", "13.00ohm", "13.25ohm", "13.50ohm", "13.75ohm",
+ "14.00ohm", "14.25ohm", "14.50ohm", "14.75ohm", "15.00ohm", "15.25ohm",
+ "15.50ohm", "15.75ohm", "16.00ohm", "16.25ohm", "16.50ohm", "16.75ohm",
+ "17.00ohm", "17.25ohm", "17.50ohm", "17.75ohm", "18.00ohm", "18.25ohm",
+ "18.50ohm", "18.75ohm", "19.00ohm", "19.25ohm", "19.50ohm", "19.75ohm",
+ "20.00ohm", "20.25ohm", "20.50ohm", "20.75ohm", "21.00ohm", "21.25ohm",
+ "21.50ohm", "21.75ohm", "22.00ohm", "22.25ohm", "22.50ohm", "22.75ohm",
+ "23.00ohm", "23.25ohm", "23.50ohm", "23.75ohm", "24.00ohm", "24.25ohm",
+ "24.50ohm", "24.75ohm", "25.00ohm", "25.25ohm", "25.50ohm", "25.75ohm",
+ "26.00ohm", "26.25ohm", "26.50ohm", "26.75ohm", "27.00ohm", "27.25ohm",
+ "27.50ohm", "27.75ohm", "28.00ohm", "28.25ohm", "28.50ohm", "28.75ohm",
+ "29.00ohm", "29.25ohm", "29.50ohm", "29.75ohm", "30.00ohm", "30.25ohm",
+ "30.50ohm", "30.75ohm", "31.00ohm", "31.25ohm", "31.50ohm", "31.75ohm",
+ "32.00ohm", "32.25ohm", "32.50ohm", "32.75ohm", "33.00ohm", "33.25ohm",
+ "33.50ohm", "33.75ohm"
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_spkmon_load_enum,
+ MAX98388_R2032_SPK_MON_LD_SEL,
+ MAX98388_SPKMON_LOAD_SHIFT,
+ max98388_spkmon_load_text);
+
+static const char * const max98388_edge_rate_text[] = {
+ "Normal", "Reduced", "Maximum", "Increased",
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_edge_rate_falling_enum,
+ MAX98388_R2094_SPK_AMP_ER_CTRL,
+ MAX98388_EDGE_RATE_FALL_SHIFT,
+ max98388_edge_rate_text);
+
+static SOC_ENUM_SINGLE_DECL(max98388_edge_rate_rising_enum,
+ MAX98388_R2094_SPK_AMP_ER_CTRL,
+ MAX98388_EDGE_RATE_RISE_SHIFT,
+ max98388_edge_rate_text);
+
+static const char * const max98388_ssm_mod_text[] = {
+ "1.5%", "3.0%", "4.5%", "6.0%",
+};
+
+static SOC_ENUM_SINGLE_DECL(max98388_ssm_mod_enum,
+ MAX98388_R2093_SPK_AMP_SSM_CFG,
+ MAX98388_SPK_AMP_SSM_MOD_SHIFT,
+ max98388_ssm_mod_text);
+
+static const struct snd_kcontrol_new max98388_snd_controls[] = {
+ SOC_SINGLE("Ramp Up Switch", MAX98388_R2091_SPK_CH_CFG,
+ MAX98388_SPK_CFG_VOL_RMPUP_SHIFT, 1, 0),
+ SOC_SINGLE("Ramp Down Switch", MAX98388_R2091_SPK_CH_CFG,
+ MAX98388_SPK_CFG_VOL_RMPDN_SHIFT, 1, 0),
+ /* Two Cell Mode Enable */
+ SOC_SINGLE("OP Mode Switch", MAX98388_R2092_SPK_AMP_OUT_CFG,
+ MAX98388_SPK_AMP_OUT_MODE_SHIFT, 1, 0),
+ /* Speaker Amplifier Overcurrent Automatic Restart Enable */
+ SOC_SINGLE("OVC Autorestart Switch", MAX98388_R210E_AUTO_RESTART,
+ MAX98388_OVC_AUTORESTART_SHIFT, 1, 0),
+ /* Thermal Shutdown Automatic Restart Enable */
+ SOC_SINGLE("THERM Autorestart Switch", MAX98388_R210E_AUTO_RESTART,
+ MAX98388_THERM_AUTORESTART_SHIFT, 1, 0),
+ /* PVDD UVLO Auto Restart */
+ SOC_SINGLE("UVLO Autorestart Switch", MAX98388_R210E_AUTO_RESTART,
+ MAX98388_PVDD_UVLO_AUTORESTART_SHIFT, 1, 0),
+ /* Clock Monitor Automatic Restart Enable */
+ SOC_SINGLE("CMON Autorestart Switch", MAX98388_R210E_AUTO_RESTART,
+ MAX98388_CMON_AUTORESTART_SHIFT, 1, 0),
+ SOC_SINGLE("CLK Monitor Switch", MAX98388_R2037_ERR_MON_CTRL,
+ MAX98388_CLOCK_MON_SHIFT, 1, 0),
+ /* Pinknoise Generator Enable */
+ SOC_SINGLE("Pinknoise Gen Switch", MAX98388_R209E_SPK_CH_PINK_NOISE_EN,
+ MAX98388_PINK_NOISE_GEN_SHIFT, 1, 0),
+ /* Dither Enable */
+ SOC_SINGLE("Dither Switch", MAX98388_R2091_SPK_CH_CFG,
+ MAX98388_SPK_CFG_DITH_EN_SHIFT, 1, 0),
+ SOC_SINGLE("VI Dither Switch", MAX98388_R20A0_IV_DATA_DSP_CTRL,
+ MAX98388_AMP_DSP_CTRL_DITH_SHIFT, 1, 0),
+ /* DC Blocker Enable */
+ SOC_SINGLE("DC Blocker Switch", MAX98388_R2091_SPK_CH_CFG,
+ MAX98388_SPK_CFG_DCBLK_SHIFT, 1, 0),
+ SOC_SINGLE("Voltage DC Blocker Switch", MAX98388_R20A0_IV_DATA_DSP_CTRL,
+ MAX98388_AMP_DSP_CTRL_VOL_DCBLK_SHIFT, 1, 0),
+ SOC_SINGLE("Current DC Blocker Switch", MAX98388_R20A0_IV_DATA_DSP_CTRL,
+ MAX98388_AMP_DSP_CTRL_CUR_DCBLK_SHIFT, 1, 0),
+ /* Digital Volume */
+ SOC_SINGLE_TLV("Digital Volume", MAX98388_R2090_SPK_CH_VOL_CTRL,
+ 0, 0x7F, 1, max98388_digital_tlv),
+ /* Speaker Volume */
+ SOC_SINGLE_TLV("Speaker Volume", MAX98388_R2092_SPK_AMP_OUT_CFG,
+ 0, 5, 0, max98388_amp_gain_tlv),
+ SOC_ENUM("Thermal Warn Thresh", max98388_thermal_warning_thresh_enum),
+ SOC_ENUM("Thermal SHDN Thresh", max98388_thermal_shutdown_thresh_enum),
+ /* Brownout Protection Automatic Level Control */
+ SOC_SINGLE("ALC Switch", MAX98388_R20EF_BP_ALC_EN, 0, 1, 0),
+ SOC_ENUM("ALC Thresh", max98388_alc_thresh_single_enum),
+ SOC_ENUM("ALC Attack Rate", max98388_alc_attack_rate_enum),
+ SOC_ENUM("ALC Release Rate", max98388_alc_release_rate_enum),
+ SOC_ENUM("ALC Max Atten", max98388_alc_max_atten_enum),
+ SOC_ENUM("ALC Debounce Time", max98388_alc_debouce_enum),
+ SOC_SINGLE("ALC Unmute Ramp Switch", MAX98388_R20E4_BP_ALC_MUTE,
+ MAX98388_ALC_UNMUTE_RAMP_EN_SHIFT, 1, 0),
+ SOC_SINGLE("ALC Mute Ramp Switch", MAX98388_R20E4_BP_ALC_MUTE,
+ MAX98388_ALC_MUTE_RAMP_EN_SHIFT, 1, 0),
+ SOC_SINGLE("ALC Mute Switch", MAX98388_R20E4_BP_ALC_MUTE,
+ MAX98388_ALC_MUTE_EN_SHIFT, 1, 0),
+ SOC_ENUM("ALC Mute Delay", max98388_alc_mute_delay_enum),
+ /* Speaker Monitor */
+ SOC_SINGLE("SPKMON Switch", MAX98388_R2037_ERR_MON_CTRL,
+ MAX98388_SPK_MON_SHIFT, 1, 0),
+ SOC_ENUM("SPKMON Thresh", max98388_spkmon_thresh_enum),
+ SOC_ENUM("SPKMON Load", max98388_spkmon_load_enum),
+ SOC_ENUM("SPKMON Duration", max98388_spkmon_duration_enum),
+ /* General Parameters */
+ SOC_ENUM("Fall Slew Rate", max98388_edge_rate_falling_enum),
+ SOC_ENUM("Rise Slew Rate", max98388_edge_rate_rising_enum),
+ SOC_SINGLE("AMP SSM Switch", MAX98388_R2093_SPK_AMP_SSM_CFG,
+ MAX98388_SPK_AMP_SSM_EN_SHIFT, 1, 0),
+ SOC_ENUM("AMP SSM Mod", max98388_ssm_mod_enum),
+};
+
+static const struct snd_soc_dapm_route max98388_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 */
+ { "ADC Voltage", NULL, "VMON"},
+ { "ADC Current", NULL, "IMON"},
+ { "VI Sense", "Switch", "ADC Voltage"},
+ { "VI Sense", "Switch", "ADC Current"},
+ { "Voltage Sense", NULL, "VI Sense"},
+ { "Current Sense", NULL, "VI Sense"},
+};
+
+static void max98388_reset(struct max98388_priv *max98388, struct device *dev)
+{
+ int ret, reg, count;
+
+ /* Software Reset */
+ ret = regmap_update_bits(max98388->regmap,
+ MAX98388_R2000_SW_RESET,
+ MAX98388_SOFT_RESET,
+ MAX98388_SOFT_RESET);
+ if (ret)
+ dev_err(dev, "Reset command failed. (ret:%d)\n", ret);
+
+ count = 0;
+ while (count < 3) {
+ usleep_range(10000, 11000);
+ /* Software Reset Verification */
+ ret = regmap_read(max98388->regmap,
+ MAX98388_R22FF_REV_ID, &reg);
+ if (!ret) {
+ dev_info(dev, "Reset completed (retry:%d)\n", count);
+ return;
+ }
+ count++;
+ }
+ dev_err(dev, "Reset failed. (ret:%d)\n", ret);
+}
+
+static int max98388_probe(struct snd_soc_component *component)
+{
+ struct max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+
+ /* Software Reset */
+ max98388_reset(max98388, component->dev);
+
+ /* General channel source configuration */
+ regmap_write(max98388->regmap,
+ MAX98388_R2059_PCM_RX_SRC2,
+ 0x10);
+
+ /* Enable DC blocker */
+ regmap_write(max98388->regmap,
+ MAX98388_R2091_SPK_CH_CFG,
+ 0x1);
+ /* Enable IMON VMON DC blocker */
+ regmap_write(max98388->regmap,
+ MAX98388_R20A0_IV_DATA_DSP_CTRL,
+ 0x3);
+ /* TX slot configuration */
+ regmap_write(max98388->regmap,
+ MAX98388_R2044_PCM_TX_CTRL1,
+ max98388->v_slot);
+
+ regmap_write(max98388->regmap,
+ MAX98388_R2045_PCM_TX_CTRL2,
+ max98388->i_slot);
+ /* Enable Auto-restart behavior by default */
+ regmap_write(max98388->regmap,
+ MAX98388_R210E_AUTO_RESTART, 0xF);
+ /* Set interleave mode */
+ if (max98388->interleave_mode)
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2040_PCM_MODE_CFG,
+ MAX98388_PCM_TX_CH_INTERLEAVE_MASK,
+ MAX98388_PCM_TX_CH_INTERLEAVE_MASK);
+
+ /* Speaker Amplifier Channel Enable */
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R209F_SPK_CH_AMP_EN,
+ MAX98388_SPK_EN_MASK, 1);
+
+ return 0;
+}
+
+static int max98388_dai_set_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+ unsigned int format = 0;
+ unsigned int invert = 0;
+
+ dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt);
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ invert = MAX98388_PCM_MODE_CFG_PCM_BCLKEDGE;
+ break;
+ default:
+ dev_err(component->dev, "DAI invert mode unsupported\n");
+ return -EINVAL;
+ }
+
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2041_PCM_CLK_SETUP,
+ MAX98388_PCM_MODE_CFG_PCM_BCLKEDGE,
+ invert);
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ format = MAX98388_PCM_FORMAT_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ format = MAX98388_PCM_FORMAT_LJ;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ format = MAX98388_PCM_FORMAT_TDM_MODE1;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ format = MAX98388_PCM_FORMAT_TDM_MODE0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2040_PCM_MODE_CFG,
+ MAX98388_PCM_MODE_CFG_FORMAT_MASK,
+ format << MAX98388_PCM_MODE_CFG_FORMAT_SHIFT);
+
+ return 0;
+}
+
+/* BCLKs per LRCLK */
+static const int bclk_sel_table[] = {
+ 32, 48, 64, 96, 128, 192, 256, 384, 512, 320,
+};
+
+static int max98388_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 max98388_set_clock(struct snd_soc_component *component,
+ struct snd_pcm_hw_params *params)
+{
+ struct max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+ /* BCLK/LRCLK ratio calculation */
+ int blr_clk_ratio = params_channels(params) * max98388->ch_size;
+ int value;
+
+ if (!max98388->tdm_mode) {
+ /* BCLK configuration */
+ value = max98388_get_bclk_sel(blr_clk_ratio);
+ if (!value) {
+ dev_err(component->dev, "format unsupported %d\n",
+ params_format(params));
+ return -EINVAL;
+ }
+
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2041_PCM_CLK_SETUP,
+ MAX98388_PCM_CLK_SETUP_BSEL_MASK,
+ value);
+ }
+ return 0;
+}
+
+static int max98388_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 max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+ unsigned int sampling_rate = 0;
+ unsigned int chan_sz = 0;
+ int ret, reg;
+ int status = 0;
+
+ /* pcm mode configuration */
+ switch (snd_pcm_format_width(params_format(params))) {
+ case 16:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_16;
+ break;
+ case 24:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_24;
+ break;
+ case 32:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_32;
+ break;
+ default:
+ dev_err(component->dev, "format unsupported %d\n",
+ params_format(params));
+ goto err;
+ }
+
+ max98388->ch_size = snd_pcm_format_width(params_format(params));
+
+ ret = regmap_read(max98388->regmap,
+ MAX98388_R2040_PCM_MODE_CFG, &reg);
+ if (ret < 0)
+ goto err;
+
+ /* GLOBAL_EN OFF prior to the channel size re-configure */
+ if (chan_sz != (reg & MAX98388_PCM_MODE_CFG_CHANSZ_MASK)) {
+ ret = regmap_read(max98388->regmap,
+ MAX98388_R210F_GLOBAL_EN, &status);
+ if (ret < 0)
+ goto err;
+
+ if (status) {
+ regmap_write(max98388->regmap,
+ MAX98388_R210F_GLOBAL_EN, 0);
+ usleep_range(30000, 31000);
+ }
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2040_PCM_MODE_CFG,
+ MAX98388_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 = MAX98388_PCM_SR_8000;
+ break;
+ case 11025:
+ sampling_rate = MAX98388_PCM_SR_11025;
+ break;
+ case 12000:
+ sampling_rate = MAX98388_PCM_SR_12000;
+ break;
+ case 16000:
+ sampling_rate = MAX98388_PCM_SR_16000;
+ break;
+ case 22050:
+ sampling_rate = MAX98388_PCM_SR_22050;
+ break;
+ case 24000:
+ sampling_rate = MAX98388_PCM_SR_24000;
+ break;
+ case 32000:
+ sampling_rate = MAX98388_PCM_SR_32000;
+ break;
+ case 44100:
+ sampling_rate = MAX98388_PCM_SR_44100;
+ break;
+ case 48000:
+ sampling_rate = MAX98388_PCM_SR_48000;
+ break;
+ case 88200:
+ sampling_rate = MAX98388_PCM_SR_88200;
+ break;
+ case 96000:
+ sampling_rate = MAX98388_PCM_SR_96000;
+ 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(max98388->regmap,
+ MAX98388_R2042_PCM_SR_SETUP,
+ MAX98388_PCM_SR_MASK,
+ sampling_rate);
+
+ /* set sampling rate of IV */
+ if (max98388->interleave_mode &&
+ sampling_rate > MAX98388_PCM_SR_16000)
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2042_PCM_SR_SETUP,
+ MAX98388_PCM_SR_IV_MASK,
+ (sampling_rate - 3) << MAX98388_PCM_SR_IV_SHIFT);
+ else
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2042_PCM_SR_SETUP,
+ MAX98388_PCM_SR_IV_MASK,
+ sampling_rate << MAX98388_PCM_SR_IV_SHIFT);
+
+ ret = max98388_set_clock(component, params);
+
+ if (status) {
+ regmap_write(max98388->regmap,
+ MAX98388_R210F_GLOBAL_EN, 1);
+ usleep_range(30000, 31000);
+ }
+
+ return ret;
+
+err:
+ return -EINVAL;
+}
+
+#define MAX_NUM_SLOTS 16
+#define MAX_NUM_CH 2
+
+static int max98388_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 max98388_priv *max98388 = snd_soc_component_get_drvdata(component);
+ int bsel = 0;
+ unsigned int chan_sz = 0;
+ unsigned int mask;
+ int cnt, slot_found;
+ int addr, bits;
+
+ if (!tx_mask && !rx_mask && !slots && !slot_width)
+ max98388->tdm_mode = false;
+ else
+ max98388->tdm_mode = true;
+
+ /* BCLK configuration */
+ bsel = max98388_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(max98388->regmap,
+ MAX98388_R2041_PCM_CLK_SETUP,
+ MAX98388_PCM_CLK_SETUP_BSEL_MASK,
+ bsel);
+
+ /* Channel size configuration */
+ switch (slot_width) {
+ case 16:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_16;
+ break;
+ case 24:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_24;
+ break;
+ case 32:
+ chan_sz = MAX98388_PCM_MODE_CFG_CHANSZ_32;
+ break;
+ default:
+ dev_err(component->dev, "format unsupported %d\n",
+ slot_width);
+ return -EINVAL;
+ }
+
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2040_PCM_MODE_CFG,
+ MAX98388_PCM_MODE_CFG_CHANSZ_MASK, chan_sz);
+
+ /* Rx slot configuration */
+ slot_found = 0;
+ mask = rx_mask;
+ for (cnt = 0 ; cnt < MAX_NUM_SLOTS ; cnt++, mask >>= 1) {
+ if (mask & 0x1) {
+ if (slot_found == 0)
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2059_PCM_RX_SRC2,
+ MAX98388_RX_SRC_CH0_SHIFT,
+ cnt);
+ else
+ regmap_update_bits(max98388->regmap,
+ MAX98388_R2059_PCM_RX_SRC2,
+ MAX98388_RX_SRC_CH1_SHIFT,
+ cnt);
+ slot_found++;
+ if (slot_found >= MAX_NUM_CH)
+ break;
+ }
+ }
+
+ /* speaker feedback slot configuration */
+ slot_found = 0;
+ mask = tx_mask;
+ for (cnt = 0 ; cnt < MAX_NUM_SLOTS ; cnt++, mask >>= 1) {
+ if (mask & 0x1) {
+ addr = MAX98388_R2044_PCM_TX_CTRL1 + (cnt / 8);
+ bits = cnt % 8;
+ regmap_update_bits(max98388->regmap, addr, bits, bits);
+ if (slot_found >= MAX_NUM_CH)
+ break;
+ }
+ }
+
+ return 0;
+}
+
+#define MAX98388_RATES SNDRV_PCM_RATE_8000_96000
+
+#define MAX98388_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static const struct snd_soc_dai_ops max98388_dai_ops = {
+ .set_fmt = max98388_dai_set_fmt,
+ .hw_params = max98388_dai_hw_params,
+ .set_tdm_slot = max98388_dai_tdm_slot,
+};
+
+static bool max98388_readable_register(struct device *dev,
+ unsigned int reg)
+{
+ switch (reg) {
+ case MAX98388_R2001_INT_RAW1 ... MAX98388_R2002_INT_RAW2:
+ case MAX98388_R2004_INT_STATE1... MAX98388_R2005_INT_STATE2:
+ case MAX98388_R2020_THERM_WARN_THRESH:
+ case MAX98388_R2031_SPK_MON_THRESH
+ ... MAX98388_R2033_SPK_MON_DURATION:
+ case MAX98388_R2037_ERR_MON_CTRL:
+ case MAX98388_R2040_PCM_MODE_CFG
+ ... MAX98388_R2042_PCM_SR_SETUP:
+ case MAX98388_R2044_PCM_TX_CTRL1
+ ... MAX98388_R2045_PCM_TX_CTRL2:
+ case MAX98388_R2050_PCM_TX_HIZ_CTRL1
+ ... MAX98388_R2059_PCM_RX_SRC2:
+ case MAX98388_R205C_PCM_TX_DRIVE_STRENGTH
+ ... MAX98388_R205F_PCM_TX_EN:
+ case MAX98388_R2090_SPK_CH_VOL_CTRL
+ ... MAX98388_R2094_SPK_AMP_ER_CTRL:
+ case MAX98388_R209E_SPK_CH_PINK_NOISE_EN
+ ... MAX98388_R209F_SPK_CH_AMP_EN:
+ case MAX98388_R20A0_IV_DATA_DSP_CTRL:
+ case MAX98388_R20A7_IV_DATA_EN:
+ case MAX98388_R20E0_BP_ALC_THRESH ... MAX98388_R20E4_BP_ALC_MUTE:
+ case MAX98388_R20EE_BP_INF_HOLD_REL ... MAX98388_R20EF_BP_ALC_EN:
+ case MAX98388_R210E_AUTO_RESTART:
+ case MAX98388_R210F_GLOBAL_EN:
+ case MAX98388_R22FF_REV_ID:
+ return true;
+ default:
+ return false;
+ }
+};
+
+static bool max98388_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX98388_R2001_INT_RAW1 ... MAX98388_R2005_INT_STATE2:
+ case MAX98388_R210F_GLOBAL_EN:
+ case MAX98388_R22FF_REV_ID:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static struct snd_soc_dai_driver max98388_dai[] = {
+ {
+ .name = "max98388-aif1",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = MAX98388_RATES,
+ .formats = MAX98388_FORMATS,
+ },
+ .capture = {
+ .stream_name = "HiFi Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = MAX98388_RATES,
+ .formats = MAX98388_FORMATS,
+ },
+ .ops = &max98388_dai_ops,
+ }
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int max98388_suspend(struct device *dev)
+{
+ struct max98388_priv *max98388 = dev_get_drvdata(dev);
+
+ regcache_cache_only(max98388->regmap, true);
+ regcache_mark_dirty(max98388->regmap);
+
+ return 0;
+}
+
+static int max98388_resume(struct device *dev)
+{
+ struct max98388_priv *max98388 = dev_get_drvdata(dev);
+
+ regcache_cache_only(max98388->regmap, false);
+ max98388_reset(max98388, dev);
+ regcache_sync(max98388->regmap);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops max98388_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(max98388_suspend, max98388_resume)
+};
+
+static const struct regmap_config max98388_regmap = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .max_register = MAX98388_R22FF_REV_ID,
+ .reg_defaults = max98388_reg,
+ .num_reg_defaults = ARRAY_SIZE(max98388_reg),
+ .readable_reg = max98388_readable_register,
+ .volatile_reg = max98388_volatile_reg,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+const struct snd_soc_component_driver soc_codec_dev_max98388 = {
+ .probe = max98388_probe,
+ .controls = max98388_snd_controls,
+ .num_controls = ARRAY_SIZE(max98388_snd_controls),
+ .dapm_widgets = max98388_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max98388_dapm_widgets),
+ .dapm_routes = max98388_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(max98388_audio_map),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static void max98388_read_deveice_property(struct device *dev,
+ struct max98388_priv *max98388)
+{
+ int value;
+
+ if (!device_property_read_u32(dev, "adi,vmon-slot-no", &value))
+ max98388->v_slot = value & 0xF;
+ else
+ max98388->v_slot = 0;
+
+ if (!device_property_read_u32(dev, "adi,imon-slot-no", &value))
+ max98388->i_slot = value & 0xF;
+ else
+ max98388->i_slot = 1;
+
+ if (device_property_read_bool(dev, "adi,interleave-mode"))
+ max98388->interleave_mode = true;
+ else
+ max98388->interleave_mode = false;
+
+ if (dev->of_node) {
+ max98388->reset_gpio = of_get_named_gpio(dev->of_node,
+ "reset-gpio", 0);
+ if (!gpio_is_valid(max98388->reset_gpio)) {
+ dev_err(dev, "Looking up %s property in node %s failed %d\n",
+ "reset-gpio", dev->of_node->full_name,
+ max98388->reset_gpio);
+ } else {
+ dev_dbg(dev, "reset-gpio=%d",
+ max98388->reset_gpio);
+ }
+ } else {
+ /* this makes reset_gpio as invalid */
+ max98388->reset_gpio = -1;
+ }
+}
+
+static int max98388_i2c_probe(struct i2c_client *i2c)
+{
+ int ret = 0;
+ int reg = 0;
+
+ struct max98388_priv *max98388 = NULL;
+
+ max98388 = devm_kzalloc(&i2c->dev, sizeof(*max98388), GFP_KERNEL);
+
+ if (!max98388) {
+ ret = -ENOMEM;
+ return ret;
+ }
+ i2c_set_clientdata(i2c, max98388);
+
+ /* regmap initialization */
+ max98388->regmap = devm_regmap_init_i2c(i2c, &max98388_regmap);
+ if (IS_ERR(max98388->regmap)) {
+ ret = PTR_ERR(max98388->regmap);
+ dev_err(&i2c->dev,
+ "Failed to allocate regmap: %d\n", ret);
+ return ret;
+ }
+
+ /* voltage/current slot & gpio configuration */
+ max98388_read_deveice_property(&i2c->dev, max98388);
+
+ /* Power on device */
+ if (gpio_is_valid(max98388->reset_gpio)) {
+ ret = devm_gpio_request(&i2c->dev, max98388->reset_gpio,
+ "MAX98388_RESET");
+ if (ret) {
+ dev_err(&i2c->dev, "%s: Failed to request gpio %d\n",
+ __func__, max98388->reset_gpio);
+ return -EINVAL;
+ }
+ gpio_direction_output(max98388->reset_gpio, 0);
+ msleep(50);
+ gpio_direction_output(max98388->reset_gpio, 1);
+ msleep(20);
+ }
+
+ /* Read Revision ID */
+ ret = regmap_read(max98388->regmap,
+ MAX98388_R22FF_REV_ID, &reg);
+ if (ret < 0) {
+ dev_err(&i2c->dev,
+ "Failed to read: 0x%02X\n", MAX98388_R22FF_REV_ID);
+ return ret;
+ }
+ dev_info(&i2c->dev, "MAX98388 revisionID: 0x%02X\n", reg);
+
+ /* codec registration */
+ ret = devm_snd_soc_register_component(&i2c->dev,
+ &soc_codec_dev_max98388,
+ max98388_dai,
+ ARRAY_SIZE(max98388_dai));
+ if (ret < 0)
+ dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
+
+ return ret;
+}
+
+static const struct i2c_device_id max98388_i2c_id[] = {
+ { "max98388", 0},
+ { },
+};
+
+MODULE_DEVICE_TABLE(i2c, max98388_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id max98388_of_match[] = {
+ { .compatible = "adi,max98388", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, max98388_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id max98388_acpi_match[] = {
+ { "ADS8388", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, max98388_acpi_match);
+#endif
+
+static struct i2c_driver max98388_i2c_driver = {
+ .driver = {
+ .name = "max98388",
+ .of_match_table = of_match_ptr(max98388_of_match),
+ .acpi_match_table = ACPI_PTR(max98388_acpi_match),
+ .pm = &max98388_pm,
+ },
+ .probe = max98388_i2c_probe,
+ .id_table = max98388_i2c_id,
+};
+
+module_i2c_driver(max98388_i2c_driver)
+
+MODULE_DESCRIPTION("ALSA SoC MAX98388 driver");
+MODULE_AUTHOR("Ryan Lee <ryans.lee@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/max98388.h b/sound/soc/codecs/max98388.h
new file mode 100644
index 000000000000..74f8c86381ac
--- /dev/null
+++ b/sound/soc/codecs/max98388.h
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * max98388.h -- MAX98388 ALSA SoC audio driver header
+ *
+ * Copyright(c) 2022, Analog Devices Inc.
+ */
+
+#ifndef _MAX98388_H
+#define _MAX98388_H
+
+/* Device Status Registers */
+#define MAX98388_R2000_SW_RESET 0x2000
+#define MAX98388_R2001_INT_RAW1 0x2001
+#define MAX98388_R2002_INT_RAW2 0x2002
+#define MAX98388_R2004_INT_STATE1 0x2004
+#define MAX98388_R2005_INT_STATE2 0x2005
+/* Thermal Protection Registers */
+#define MAX98388_R2020_THERM_WARN_THRESH 0x2020
+/* Error Monitor */
+#define MAX98388_R2031_SPK_MON_THRESH 0x2031
+#define MAX98388_R2032_SPK_MON_LD_SEL 0x2032
+#define MAX98388_R2033_SPK_MON_DURATION 0x2033
+#define MAX98388_R2037_ERR_MON_CTRL 0x2037
+/* PCM Registers */
+#define MAX98388_R2040_PCM_MODE_CFG 0x2040
+#define MAX98388_R2041_PCM_CLK_SETUP 0x2041
+#define MAX98388_R2042_PCM_SR_SETUP 0x2042
+#define MAX98388_R2044_PCM_TX_CTRL1 0x2044
+#define MAX98388_R2045_PCM_TX_CTRL2 0x2045
+#define MAX98388_R2050_PCM_TX_HIZ_CTRL1 0x2050
+#define MAX98388_R2051_PCM_TX_HIZ_CTRL2 0x2051
+#define MAX98388_R2052_PCM_TX_HIZ_CTRL3 0x2052
+#define MAX98388_R2053_PCM_TX_HIZ_CTRL4 0x2053
+#define MAX98388_R2054_PCM_TX_HIZ_CTRL5 0x2054
+#define MAX98388_R2055_PCM_TX_HIZ_CTRL6 0x2055
+#define MAX98388_R2056_PCM_TX_HIZ_CTRL7 0x2056
+#define MAX98388_R2057_PCM_TX_HIZ_CTRL8 0x2057
+#define MAX98388_R2058_PCM_RX_SRC1 0x2058
+#define MAX98388_R2059_PCM_RX_SRC2 0x2059
+#define MAX98388_R205C_PCM_TX_DRIVE_STRENGTH 0x205C
+#define MAX98388_R205D_PCM_TX_SRC_EN 0x205D
+#define MAX98388_R205E_PCM_RX_EN 0x205E
+#define MAX98388_R205F_PCM_TX_EN 0x205F
+/* Speaker Channel Control */
+#define MAX98388_R2090_SPK_CH_VOL_CTRL 0x2090
+#define MAX98388_R2091_SPK_CH_CFG 0x2091
+#define MAX98388_R2092_SPK_AMP_OUT_CFG 0x2092
+#define MAX98388_R2093_SPK_AMP_SSM_CFG 0x2093
+#define MAX98388_R2094_SPK_AMP_ER_CTRL 0x2094
+#define MAX98388_R209E_SPK_CH_PINK_NOISE_EN 0x209E
+#define MAX98388_R209F_SPK_CH_AMP_EN 0x209F
+#define MAX98388_R20A0_IV_DATA_DSP_CTRL 0x20A0
+#define MAX98388_R20A7_IV_DATA_EN 0x20A7
+#define MAX98388_R20E0_BP_ALC_THRESH 0x20E0
+#define MAX98388_R20E1_BP_ALC_RATES 0x20E1
+#define MAX98388_R20E2_BP_ALC_ATTEN 0x20E2
+#define MAX98388_R20E3_BP_ALC_REL 0x20E3
+#define MAX98388_R20E4_BP_ALC_MUTE 0x20E4
+#define MAX98388_R20EE_BP_INF_HOLD_REL 0x20EE
+#define MAX98388_R20EF_BP_ALC_EN 0x20EF
+#define MAX98388_R210E_AUTO_RESTART 0x210E
+#define MAX98388_R210F_GLOBAL_EN 0x210F
+#define MAX98388_R22FF_REV_ID 0x22FF
+
+/* MAX98388_R2000_SW_RESET */
+#define MAX98388_SOFT_RESET (0x1 << 0)
+
+/* MAX98388_R2020_THERM_WARN_THRESH */
+#define MAX98388_THERM_SHDN_THRESH_SHIFT (0)
+#define MAX98388_THERM_WARN_THRESH_SHIFT (2)
+
+/* MAX98388_R2022_PCM_TX_SRC_1 */
+#define MAX98388_PCM_TX_CH_SRC_A_V_SHIFT (0)
+#define MAX98388_PCM_TX_CH_SRC_A_I_SHIFT (4)
+
+/* MAX98388_R2024_PCM_DATA_FMT_CFG */
+#define MAX98388_PCM_MODE_CFG_FORMAT_MASK (0x7 << 3)
+#define MAX98388_PCM_MODE_CFG_FORMAT_SHIFT (3)
+#define MAX98388_PCM_TX_CH_INTERLEAVE_MASK (0x1 << 2)
+#define MAX98388_PCM_FORMAT_I2S (0x0 << 0)
+#define MAX98388_PCM_FORMAT_LJ (0x1 << 0)
+#define MAX98388_PCM_FORMAT_TDM_MODE0 (0x3 << 0)
+#define MAX98388_PCM_FORMAT_TDM_MODE1 (0x4 << 0)
+#define MAX98388_PCM_FORMAT_TDM_MODE2 (0x5 << 0)
+#define MAX98388_PCM_MODE_CFG_CHANSZ_MASK (0x3 << 6)
+#define MAX98388_PCM_MODE_CFG_CHANSZ_16 (0x1 << 6)
+#define MAX98388_PCM_MODE_CFG_CHANSZ_24 (0x2 << 6)
+#define MAX98388_PCM_MODE_CFG_CHANSZ_32 (0x3 << 6)
+
+/* MAX98388_R2031_SPK_MON_THRESH */
+#define MAX98388_SPKMON_THRESH_SHIFT (0)
+
+/* MAX98388_R2032_SPK_MON_LD_SEL */
+#define MAX98388_SPKMON_LOAD_SHIFT (0)
+
+/* MAX98388_R2033_SPK_MON_DURATION */
+#define MAX98388_SPKMON_DURATION_SHIFT (0)
+
+/* MAX98388_R2037_ERR_MON_CTRL */
+#define MAX98388_CLOCK_MON_SHIFT (0)
+#define MAX98388_SPK_MON_SHIFT (1)
+
+/* MAX98388_R203E_AMP_PATH_GAIN */
+#define MAX98388_SPK_DIGI_GAIN_MASK (0xF << 4)
+#define MAX98388_SPK_DIGI_GAIN_SHIFT (4)
+#define MAX98388_FS_GAIN_MAX_MASK (0xF << 0)
+#define MAX98388_FS_GAIN_MAX_SHIFT (0)
+
+/* MAX98388_R2041_PCM_CLK_SETUP */
+#define MAX98388_PCM_MODE_CFG_PCM_BCLKEDGE (0x1 << 4)
+#define MAX98388_PCM_CLK_SETUP_BSEL_MASK (0xF << 0)
+
+/* MAX98388_R2042_PCM_SR_SETUP */
+#define MAX98388_PCM_SR_MASK (0xF << 0)
+#define MAX98388_PCM_SR_IV_MASK (0xF << 4)
+#define MAX98388_PCM_SR_IV_SHIFT (4)
+#define MAX98388_PCM_SR_8000 (0x0 << 0)
+#define MAX98388_PCM_SR_11025 (0x1 << 0)
+#define MAX98388_PCM_SR_12000 (0x2 << 0)
+#define MAX98388_PCM_SR_16000 (0x3 << 0)
+#define MAX98388_PCM_SR_22050 (0x4 << 0)
+#define MAX98388_PCM_SR_24000 (0x5 << 0)
+#define MAX98388_PCM_SR_32000 (0x6 << 0)
+#define MAX98388_PCM_SR_44100 (0x7 << 0)
+#define MAX98388_PCM_SR_48000 (0x8 << 0)
+#define MAX98388_PCM_SR_88200 (0x9 << 0)
+#define MAX98388_PCM_SR_96000 (0xA << 0)
+
+/* MAX98388_R2043_AMP_EN */
+#define MAX98388_SPK_EN_MASK (0x1 << 0)
+#define MAX98388_SPKFB_EN_MASK (0x1 << 1)
+#define MAX98388_SPKFB_EN_SHIFT (1)
+
+/* MAX98388_R2052_MEAS_ADC_PVDD_FLT_CFG */
+#define MAX98388_FLT_EN_SHIFT (4)
+
+/* MAX98388_R2058_PCM_RX_SRC1 */
+#define MAX98388_PCM_TO_SPK_MONOMIX_CFG_SHIFT (0)
+
+/* MAX98388_R2059_PCM_RX_SRC2 */
+#define MAX98388_RX_SRC_CH0_SHIFT (0)
+#define MAX98388_RX_SRC_CH1_SHIFT (4)
+
+/* MAX98388_R2091_SPK_CH_CFG */
+#define MAX98388_SPK_CFG_DCBLK_SHIFT (0)
+#define MAX98388_SPK_CFG_DITH_EN_SHIFT (1)
+#define MAX98388_SPK_CFG_INV_SHIFT (2)
+#define MAX98388_SPK_CFG_VOL_RMPUP_SHIFT (3)
+#define MAX98388_SPK_CFG_VOL_RMPDN_SHIFT (4)
+
+/* MAX98388_R2092_SPK_AMP_OUT_CFG */
+#define MAX98388_SPK_AMP_OUT_GAIN_SHIFT (0)
+#define MAX98388_SPK_AMP_OUT_MODE_SHIFT (3)
+
+/* MAX98388_R2093_SPK_AMP_SSM_CFG */
+#define MAX98388_SPK_AMP_SSM_EN_SHIFT (0)
+#define MAX98388_SPK_AMP_SSM_MOD_SHIFT (1)
+
+/* MAX98388_R2094_SPK_AMP_ER_CTRL */
+#define MAX98388_EDGE_RATE_RISE_SHIFT (0)
+#define MAX98388_EDGE_RATE_FALL_SHIFT (2)
+
+/* MAX98388_R209E_SPK_CH_PINK_NOISE_EN */
+#define MAX98388_PINK_NOISE_GEN_SHIFT (0)
+
+/* MAX98388_R20A0_IV_DATA_DSP_CTRL */
+#define MAX98388_AMP_DSP_CTRL_VOL_DCBLK_SHIFT (0)
+#define MAX98388_AMP_DSP_CTRL_CUR_DCBLK_SHIFT (1)
+#define MAX98388_AMP_DSP_CTRL_VOL_INV_SHIFT (2)
+#define MAX98388_AMP_DSP_CTRL_CUR_INV_SHIFT (3)
+#define MAX98388_AMP_DSP_CTRL_DITH_SHIFT (4)
+
+/* MAX98388_R20B2_BDE_L4_CFG_2 */
+#define MAX98388_LVL4_HOLD_EN_SHIFT (6)
+#define MAX98388_LVL4_MUTE_EN_SHIFT (7)
+
+/* MAX98388_R20B5_BDE_EN */
+#define MAX98388_BDE_EN_SHIFT (0)
+
+/* MAX98388_R20D1_DHT_CFG */
+#define MAX98388_DHT_ROT_PNT_SHIFT (0)
+#define MAX98388_DHT_SPK_GAIN_MIN_SHIFT (4)
+
+/* MAX98388_R20D2_DHT_ATTACK_CFG */
+#define MAX98388_DHT_ATTACK_RATE_SHIFT (0)
+#define MAX98388_DHT_ATTACK_STEP_SHIFT (3)
+
+/* MAX98388_R20D3_DHT_RELEASE_CFG */
+#define MAX98388_DHT_RELEASE_RATE_SHIFT (0)
+#define MAX98388_DHT_RELEASE_STEP_SHIFT (3)
+
+/* MAX98388_R20D4_DHT_EN */
+#define MAX98388_DHT_EN_SHIFT (0)
+
+/* MAX98388_R20E0_BP_ALC_THRESH */
+#define MAX98388_ALC_THRESH_SHIFT (0)
+
+/* MAX98388_R20E1_BP_ALC_RATES */
+#define MAX98388_ALC_RELEASE_RATE_SHIFT (0)
+#define MAX98388_ALC_ATTACK_RATE_SHIFT (4)
+
+/* MAX98388_R20E2_BP_ALC_ATTEN */
+#define MAX98388_ALC_MAX_ATTEN_SHIFT (0)
+
+/* MAX98388_R20E3_BP_ALC_REL */
+#define MAX98388_ALC_DEBOUNCE_TIME_SHIFT (0)
+
+/* MAX98388_R20E4_BP_ALC_MUTE */
+#define MAX98388_ALC_MUTE_EN_SHIFT (0)
+#define MAX98388_ALC_MUTE_DELAY_SHIFT (1)
+#define MAX98388_ALC_MUTE_RAMP_EN_SHIFT (4)
+#define MAX98388_ALC_UNMUTE_RAMP_EN_SHIFT (5)
+
+/* MAX98388_R210E_AUTO_RESTART */
+#define MAX98388_PVDD_UVLO_AUTORESTART_SHIFT (0)
+#define MAX98388_THERM_AUTORESTART_SHIFT (1)
+#define MAX98388_OVC_AUTORESTART_SHIFT (2)
+#define MAX98388_CMON_AUTORESTART_SHIFT (3)
+
+/* MAX98388_R210F_GLOBAL_EN */
+#define MAX98388_GLOBAL_EN_MASK (0x1 << 0)
+
+struct max98388_priv {
+ struct regmap *regmap;
+ int reset_gpio;
+ unsigned int v_slot;
+ unsigned int i_slot;
+ unsigned int spkfb_slot;
+ bool interleave_mode;
+ unsigned int ch_size;
+ bool tdm_mode;
+};
+
+#endif
--
2.34.1