[PATCH V2 1/2] ASoC: dt-bindings: max98388: add amplifier driver
From: Ryan Lee ryans.lee@analog.com
Add dt-bindings information for Analog Devices MAX98388 I2S Amplifier
Signed-off-by: Ryan Lee ryans.lee@analog.com --- Changes from v1: Removed unnecessary blank line and description. Modified quotes.
.../bindings/sound/adi,max98388.yaml | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/adi,max98388.yaml
diff --git a/Documentation/devicetree/bindings/sound/adi,max98388.yaml b/Documentation/devicetree/bindings/sound/adi,max98388.yaml new file mode 100644 index 000000000000..93ccd5905736 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/adi,max98388.yaml @@ -0,0 +1,79 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/adi,max98388.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices MAX98388 Speaker Amplifier + +maintainers: + - Ryan Lee ryans.lee@analog.com + +description: + The MAX98388 is a mono Class-D speaker amplifier with I/V feedback. + The device provides a PCM interface for audio data and a standard + I2C interface for control data communication. + +allOf: + - $ref: dai-common.yaml# + +properties: + compatible: + enum: + - adi,max98388 + + reg: + maxItems: 1 + + '#sound-dai-cells': + const: 0 + + adi,vmon-slot-no: + description: slot number of the voltage feedback monitor + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 15 + default: 0 + + adi,imon-slot-no: + description: slot number of the current feedback monitor + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 15 + default: 1 + + adi,interleave-mode: + description: + For cases where a single combined channel for the I/V feedback data + is not sufficient, the device can also be configured to share + a single data output channel on alternating frames. + In this configuration, the current and voltage data will be frame + interleaved on a single output channel. + type: boolean + + reset-gpios: + maxItems: 1 + +required: + - compatible + - reg + - '#sound-dai-cells' + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + max98388: amplifier@39 { + compatible = "adi,max98388"; + reg = <0x39>; + #sound-dai-cells = <0>; + adi,vmon-slot-no = <0>; + adi,imon-slot-no = <1>; + adi,interleave-mode; + reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>; + }; + };
base-commit: 53ab6975c12d1ad86c599a8927e8c698b144d669
From: Ryan Lee ryans.lee@analog.com
Added Analog Devices MAX98388 amplifier driver. MAX98388 provides a PCM interface for audio data and a standard I2C interface for control data communication.
Signed-off-by: Ryan Lee ryans.lee@analog.com Reported-by: kernel test robot lkp@intel.com Closes: https://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/2023 06082054.jIU9oENf-lkp@intel.com/__;!!A3Ni8CS0y2Y!46sHiAsmIiXxZ_QXIobho mY8F1f7F2yMYd_65NNFwRlcgut33--RdFjVAbg6jKf7Vs8GaYZ7oA$ --- 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, ®); + 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, ®); + 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, ®); + 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@analog.com"); +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
On 10/06/2023 01:44, “Ryan wrote:
From: Ryan Lee ryans.lee@analog.com
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@analog.com Reported-by: kernel test robot lkp@intel.com
There is nothing to report here.
Closes: https://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/2023 06082054.jIU9oENf-lkp@intel.com/__;!!A3Ni8CS0y2Y!46sHiAsmIiXxZ_QXIobho mY8F1f7F2yMYd_65NNFwRlcgut33--RdFjVAbg6jKf7Vs8GaYZ7oA$
Nothing to close and also broken link. Fix your mailer.
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
...
+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);
Nope, use devm
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;
Why? To request it again? It does not make sense.
- }
+}
+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);
Drop blank line.
- if (!max98388) {
ret = -ENOMEM;
return -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;
return dev_err_probe
- }
- /* voltage/current slot & gpio configuration */
- max98388_read_deveice_property(&i2c->dev, max98388);
- /* Power on device */
- if (gpio_is_valid(max98388->reset_gpio)) {
What's this? You request it twice? No.
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 dev_err_probe
return -EINVAL;}gpio_direction_output(max98388->reset_gpio, 0);msleep(50);gpio_direction_output(max98388->reset_gpio, 1);
1 means keep in reset, so why do you keep deviec reset afterwards? Was it tested? You probably messed up values used for GPIOs as you stated in example that it is active low.
msleep(20);- }
- /* Read Revision ID */
- ret = regmap_read(max98388->regmap,
MAX98388_R22FF_REV_ID, ®);- if (ret < 0) {
dev_err(&i2c->dev,"Failed to read: 0x%02X\n", MAX98388_R22FF_REV_ID);return ret;
return dev_err_probe
- }
- 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)
Drop
+static const struct of_device_id max98388_of_match[] = {
- { .compatible = "adi,max98388", },
- { }
+}; +MODULE_DEVICE_TABLE(of, max98388_of_match); +#endif
+#ifdef CONFIG_ACPI
Drop
+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),
Just drop all wrappers. They are useless and only limit your driver (OF can be used on some ACPI platforms).
Best regards, Krzysztof
-----Original Message----- From: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Sent: Saturday, June 10, 2023 2:24 AM To: “Ryan ryan.lee.analog@gmail.com; lgirdwood@gmail.com; broonie@kernel.org; robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org; perex@perex.cz; tiwai@suse.com; rf@opensource.cirrus.com; Lee, RyanS RyanS.Lee@analog.com; wangweidong.a@awinic.com; shumingf@realtek.com; herve.codina@bootlin.com; ckeepax@opensource.cirrus.com; doug@schmorgal.com; ajye_huang@compal.corp-partner.google.com; kiseok.jo@irondevice.com; alsa-devel@alsa-project.org; devicetree@vger.kernel.org; linux- kernel@vger.kernel.org Cc: venkataprasad.potturu@amd.com; kernel test robot lkp@intel.com Subject: Re: [PATCH V2 2/2] ASoC: max98388: add amplifier driver
[External]
On 10/06/2023 01:44, “Ryan wrote:
From: Ryan Lee ryans.lee@analog.com
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@analog.com Reported-by: kernel test robot lkp@intel.com
There is nothing to report here.
Probably I misunderstood the mail from the kernel test robot. Removing the line.
Closes: https://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/2023 06082054.jIU9oENf-
lkp@intel.com/__;!!A3Ni8CS0y2Y!46sHiAsmIiXxZ_QXIobho
mY8F1f7F2yMYd_65NNFwRlcgut33--RdFjVAbg6jKf7Vs8GaYZ7oA$
Nothing to close and also broken link. Fix your mailer.
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
...
+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);Nope, use devm
OK.
if (!gpio_is_valid(max98388->reset_gpio)) {dev_err(dev, "Looking up %s property in node %sfailed %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;Why? To request it again? It does not make sense.
This was to make gpio_is_valid() = false in order to skip the reset GPIO control in i2c_probe(). I shall remove these codes and keep the minimum configuration in i2c_probe() function.
- }
+}
+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);
Drop blank line.
OK.
- if (!max98388) {
ret = -ENOMEM;return -ENOMEM;
OK.
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;return dev_err_probe
OK. Shall fix it.
- }
- /* voltage/current slot & gpio configuration */
- max98388_read_deveice_property(&i2c->dev, max98388);
- /* Power on device */
- if (gpio_is_valid(max98388->reset_gpio)) {
What's this? You request it twice? No.
Will modify the code.
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 dev_err_probe
OK
return -EINVAL;}gpio_direction_output(max98388->reset_gpio, 0);msleep(50);gpio_direction_output(max98388->reset_gpio, 1);1 means keep in reset, so why do you keep deviec reset afterwards? Was it tested? You probably messed up values used for GPIOs as you stated in example that it is active low.
The hardware reset function is active low, so the state needs to be high to restart the amp. The code was functional, but I see room for improvement. I shall modify the code.
msleep(20);- }
- /* Read Revision ID */
- ret = regmap_read(max98388->regmap,
MAX98388_R22FF_REV_ID, ®);- if (ret < 0) {
dev_err(&i2c->dev,"Failed to read: 0x%02X\n",MAX98388_R22FF_REV_ID);
return ret;return dev_err_probe
OK.
- }
- 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)
Drop
OK Thanks.
+static const struct of_device_id max98388_of_match[] = {
- { .compatible = "adi,max98388", },
- { }
+}; +MODULE_DEVICE_TABLE(of, max98388_of_match); #endif
+#ifdef CONFIG_ACPI
Drop
OK.
+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),Just drop all wrappers. They are useless and only limit your driver (OF can be used on some ACPI platforms).
I shall remove all wrappers. Thanks for the review.
Best regards, Krzysztof
On 10/06/2023 01:44, “Ryan wrote:
From: Ryan Lee ryans.lee@analog.com
Add dt-bindings information for Analog Devices MAX98388 I2S Amplifier
Signed-off-by: Ryan Lee ryans.lee@analog.com
Changes from v1: Removed unnecessary blank line and description. Modified quotes.
Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org
Best regards, Krzysztof
participants (3)
-
Krzysztof Kozlowski -
Lee, RyanS -
“Ryan