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646 lines
18 KiB
646 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* max98925.c -- ALSA SoC Stereo MAX98925 driver |
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* Copyright 2013-15 Maxim Integrated Products |
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*/ |
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#include <linux/delay.h> |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/regmap.h> |
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#include <linux/slab.h> |
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#include <linux/cdev.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/tlv.h> |
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#include "max98925.h" |
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static const char *const dai_text[] = { |
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"Left", "Right", "LeftRight", "LeftRightDiv2", |
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}; |
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static const char * const max98925_boost_voltage_text[] = { |
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"8.5V", "8.25V", "8.0V", "7.75V", "7.5V", "7.25V", "7.0V", "6.75V", |
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"6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V", "6.5V" |
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}; |
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static SOC_ENUM_SINGLE_DECL(max98925_boost_voltage, |
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MAX98925_CONFIGURATION, M98925_BST_VOUT_SHIFT, |
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max98925_boost_voltage_text); |
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|
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static const char *const hpf_text[] = { |
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"Disable", "DC Block", "100Hz", "200Hz", "400Hz", "800Hz", |
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}; |
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|
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static const struct reg_default max98925_reg[] = { |
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{ 0x0B, 0x00 }, /* IRQ Enable0 */ |
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{ 0x0C, 0x00 }, /* IRQ Enable1 */ |
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{ 0x0D, 0x00 }, /* IRQ Enable2 */ |
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{ 0x0E, 0x00 }, /* IRQ Clear0 */ |
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{ 0x0F, 0x00 }, /* IRQ Clear1 */ |
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{ 0x10, 0x00 }, /* IRQ Clear2 */ |
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{ 0x11, 0xC0 }, /* Map0 */ |
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{ 0x12, 0x00 }, /* Map1 */ |
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{ 0x13, 0x00 }, /* Map2 */ |
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{ 0x14, 0xF0 }, /* Map3 */ |
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{ 0x15, 0x00 }, /* Map4 */ |
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{ 0x16, 0xAB }, /* Map5 */ |
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{ 0x17, 0x89 }, /* Map6 */ |
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{ 0x18, 0x00 }, /* Map7 */ |
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{ 0x19, 0x00 }, /* Map8 */ |
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{ 0x1A, 0x06 }, /* DAI Clock Mode 1 */ |
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{ 0x1B, 0xC0 }, /* DAI Clock Mode 2 */ |
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{ 0x1C, 0x00 }, /* DAI Clock Divider Denominator MSBs */ |
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{ 0x1D, 0x00 }, /* DAI Clock Divider Denominator LSBs */ |
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{ 0x1E, 0xF0 }, /* DAI Clock Divider Numerator MSBs */ |
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{ 0x1F, 0x00 }, /* DAI Clock Divider Numerator LSBs */ |
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{ 0x20, 0x50 }, /* Format */ |
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{ 0x21, 0x00 }, /* TDM Slot Select */ |
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{ 0x22, 0x00 }, /* DOUT Configuration VMON */ |
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{ 0x23, 0x00 }, /* DOUT Configuration IMON */ |
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{ 0x24, 0x00 }, /* DOUT Configuration VBAT */ |
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{ 0x25, 0x00 }, /* DOUT Configuration VBST */ |
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{ 0x26, 0x00 }, /* DOUT Configuration FLAG */ |
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{ 0x27, 0xFF }, /* DOUT HiZ Configuration 1 */ |
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{ 0x28, 0xFF }, /* DOUT HiZ Configuration 2 */ |
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{ 0x29, 0xFF }, /* DOUT HiZ Configuration 3 */ |
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{ 0x2A, 0xFF }, /* DOUT HiZ Configuration 4 */ |
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{ 0x2B, 0x02 }, /* DOUT Drive Strength */ |
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{ 0x2C, 0x90 }, /* Filters */ |
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{ 0x2D, 0x00 }, /* Gain */ |
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{ 0x2E, 0x02 }, /* Gain Ramping */ |
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{ 0x2F, 0x00 }, /* Speaker Amplifier */ |
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{ 0x30, 0x0A }, /* Threshold */ |
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{ 0x31, 0x00 }, /* ALC Attack */ |
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{ 0x32, 0x80 }, /* ALC Atten and Release */ |
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{ 0x33, 0x00 }, /* ALC Infinite Hold Release */ |
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{ 0x34, 0x92 }, /* ALC Configuration */ |
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{ 0x35, 0x01 }, /* Boost Converter */ |
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{ 0x36, 0x00 }, /* Block Enable */ |
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{ 0x37, 0x00 }, /* Configuration */ |
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{ 0x38, 0x00 }, /* Global Enable */ |
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{ 0x3A, 0x00 }, /* Boost Limiter */ |
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}; |
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static const struct soc_enum max98925_dai_enum = |
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SOC_ENUM_SINGLE(MAX98925_GAIN, 5, ARRAY_SIZE(dai_text), dai_text); |
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static const struct soc_enum max98925_hpf_enum = |
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SOC_ENUM_SINGLE(MAX98925_FILTERS, 0, ARRAY_SIZE(hpf_text), hpf_text); |
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static const struct snd_kcontrol_new max98925_hpf_sel_mux = |
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SOC_DAPM_ENUM("Rc Filter MUX Mux", max98925_hpf_enum); |
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static const struct snd_kcontrol_new max98925_dai_sel_mux = |
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SOC_DAPM_ENUM("DAI IN MUX Mux", max98925_dai_enum); |
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static int max98925_dac_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); |
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struct max98925_priv *max98925 = snd_soc_component_get_drvdata(component); |
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switch (event) { |
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case SND_SOC_DAPM_PRE_PMU: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_BLOCK_ENABLE, |
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M98925_BST_EN_MASK | |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK, |
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M98925_BST_EN_MASK | |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK); |
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break; |
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case SND_SOC_DAPM_POST_PMD: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_BLOCK_ENABLE, M98925_BST_EN_MASK | |
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M98925_ADC_IMON_EN_MASK | M98925_ADC_VMON_EN_MASK, 0); |
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break; |
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default: |
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return 0; |
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} |
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return 0; |
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} |
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static const struct snd_soc_dapm_widget max98925_dapm_widgets[] = { |
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SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_MUX("DAI IN MUX", SND_SOC_NOPM, 0, 0, |
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&max98925_dai_sel_mux), |
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SND_SOC_DAPM_MUX("Rc Filter MUX", SND_SOC_NOPM, 0, 0, |
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&max98925_hpf_sel_mux), |
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SND_SOC_DAPM_DAC_E("Amp Enable", NULL, MAX98925_BLOCK_ENABLE, |
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M98925_SPK_EN_SHIFT, 0, max98925_dac_event, |
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
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SND_SOC_DAPM_SUPPLY("Global Enable", MAX98925_GLOBAL_ENABLE, |
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M98925_EN_SHIFT, 0, NULL, 0), |
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SND_SOC_DAPM_OUTPUT("BE_OUT"), |
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}; |
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static const struct snd_soc_dapm_route max98925_audio_map[] = { |
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{"DAI IN MUX", "Left", "DAI_OUT"}, |
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{"DAI IN MUX", "Right", "DAI_OUT"}, |
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{"DAI IN MUX", "LeftRight", "DAI_OUT"}, |
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{"DAI IN MUX", "LeftRightDiv2", "DAI_OUT"}, |
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{"Rc Filter MUX", "Disable", "DAI IN MUX"}, |
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{"Rc Filter MUX", "DC Block", "DAI IN MUX"}, |
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{"Rc Filter MUX", "100Hz", "DAI IN MUX"}, |
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{"Rc Filter MUX", "200Hz", "DAI IN MUX"}, |
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{"Rc Filter MUX", "400Hz", "DAI IN MUX"}, |
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{"Rc Filter MUX", "800Hz", "DAI IN MUX"}, |
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{"Amp Enable", NULL, "Rc Filter MUX"}, |
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{"BE_OUT", NULL, "Amp Enable"}, |
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{"BE_OUT", NULL, "Global Enable"}, |
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}; |
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static bool max98925_volatile_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX98925_VBAT_DATA: |
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case MAX98925_VBST_DATA: |
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case MAX98925_LIVE_STATUS0: |
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case MAX98925_LIVE_STATUS1: |
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case MAX98925_LIVE_STATUS2: |
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case MAX98925_STATE0: |
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case MAX98925_STATE1: |
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case MAX98925_STATE2: |
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case MAX98925_FLAG0: |
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case MAX98925_FLAG1: |
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case MAX98925_FLAG2: |
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case MAX98925_REV_VERSION: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static bool max98925_readable_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX98925_IRQ_CLEAR0: |
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case MAX98925_IRQ_CLEAR1: |
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case MAX98925_IRQ_CLEAR2: |
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case MAX98925_ALC_HOLD_RLS: |
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return false; |
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default: |
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return true; |
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} |
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} |
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static DECLARE_TLV_DB_SCALE(max98925_spk_tlv, -600, 100, 0); |
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static const struct snd_kcontrol_new max98925_snd_controls[] = { |
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SOC_SINGLE_TLV("Speaker Volume", MAX98925_GAIN, |
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M98925_SPK_GAIN_SHIFT, (1<<M98925_SPK_GAIN_WIDTH)-1, 0, |
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max98925_spk_tlv), |
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SOC_SINGLE("Ramp Switch", MAX98925_GAIN_RAMPING, |
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M98925_SPK_RMP_EN_SHIFT, 1, 0), |
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SOC_SINGLE("ZCD Switch", MAX98925_GAIN_RAMPING, |
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M98925_SPK_ZCD_EN_SHIFT, 1, 0), |
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SOC_SINGLE("ALC Switch", MAX98925_THRESHOLD, |
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M98925_ALC_EN_SHIFT, 1, 0), |
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SOC_SINGLE("ALC Threshold", MAX98925_THRESHOLD, M98925_ALC_TH_SHIFT, |
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(1<<M98925_ALC_TH_WIDTH)-1, 0), |
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SOC_ENUM("Boost Output Voltage", max98925_boost_voltage), |
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}; |
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/* codec sample rate and n/m dividers parameter table */ |
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static const struct { |
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int rate; |
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int sr; |
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int divisors[3][2]; |
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} rate_table[] = { |
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{ |
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.rate = 8000, |
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.sr = 0, |
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.divisors = { {1, 375}, {5, 1764}, {1, 384} } |
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}, |
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{ |
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.rate = 11025, |
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.sr = 1, |
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.divisors = { {147, 40000}, {1, 256}, {147, 40960} } |
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}, |
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{ |
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.rate = 12000, |
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.sr = 2, |
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.divisors = { {1, 250}, {5, 1176}, {1, 256} } |
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}, |
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{ |
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.rate = 16000, |
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.sr = 3, |
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.divisors = { {2, 375}, {5, 882}, {1, 192} } |
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}, |
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{ |
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.rate = 22050, |
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.sr = 4, |
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.divisors = { {147, 20000}, {1, 128}, {147, 20480} } |
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}, |
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{ |
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.rate = 24000, |
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.sr = 5, |
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.divisors = { {1, 125}, {5, 588}, {1, 128} } |
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}, |
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{ |
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.rate = 32000, |
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.sr = 6, |
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.divisors = { {4, 375}, {5, 441}, {1, 96} } |
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}, |
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{ |
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.rate = 44100, |
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.sr = 7, |
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.divisors = { {147, 10000}, {1, 64}, {147, 10240} } |
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}, |
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{ |
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.rate = 48000, |
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.sr = 8, |
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.divisors = { {2, 125}, {5, 294}, {1, 64} } |
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}, |
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}; |
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static inline int max98925_rate_value(struct snd_soc_component *component, |
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int rate, int clock, int *value, int *n, int *m) |
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{ |
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int ret = -EINVAL; |
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int i; |
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for (i = 0; i < ARRAY_SIZE(rate_table); i++) { |
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if (rate_table[i].rate >= rate) { |
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*value = rate_table[i].sr; |
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*n = rate_table[i].divisors[clock][0]; |
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*m = rate_table[i].divisors[clock][1]; |
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ret = 0; |
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break; |
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} |
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} |
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return ret; |
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} |
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static void max98925_set_sense_data(struct max98925_priv *max98925) |
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{ |
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/* set VMON slots */ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DOUT_CFG_VMON, |
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M98925_DAI_VMON_EN_MASK, M98925_DAI_VMON_EN_MASK); |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DOUT_CFG_VMON, |
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M98925_DAI_VMON_SLOT_MASK, |
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max98925->v_slot << M98925_DAI_VMON_SLOT_SHIFT); |
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/* set IMON slots */ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DOUT_CFG_IMON, |
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M98925_DAI_IMON_EN_MASK, M98925_DAI_IMON_EN_MASK); |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DOUT_CFG_IMON, |
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M98925_DAI_IMON_SLOT_MASK, |
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max98925->i_slot << M98925_DAI_IMON_SLOT_SHIFT); |
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} |
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static int max98925_dai_set_fmt(struct snd_soc_dai *codec_dai, |
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unsigned int fmt) |
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{ |
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struct snd_soc_component *component = codec_dai->component; |
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struct max98925_priv *max98925 = snd_soc_component_get_drvdata(component); |
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unsigned int invert = 0; |
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dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); |
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switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { |
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case SND_SOC_DAIFMT_CBC_CFC: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_MAS_MASK, 0); |
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max98925_set_sense_data(max98925); |
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break; |
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case SND_SOC_DAIFMT_CBP_CFP: |
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/* |
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* set left channel DAI to provider mode, |
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* right channel always consumer |
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*/ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_MAS_MASK, M98925_DAI_MAS_MASK); |
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break; |
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default: |
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dev_err(component->dev, "DAI clock mode unsupported"); |
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return -EINVAL; |
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} |
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
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case SND_SOC_DAIFMT_NB_NF: |
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break; |
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case SND_SOC_DAIFMT_NB_IF: |
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invert = M98925_DAI_WCI_MASK; |
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break; |
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case SND_SOC_DAIFMT_IB_NF: |
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invert = M98925_DAI_BCI_MASK; |
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break; |
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case SND_SOC_DAIFMT_IB_IF: |
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invert = M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK; |
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break; |
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default: |
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dev_err(component->dev, "DAI invert mode unsupported"); |
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return -EINVAL; |
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} |
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regmap_update_bits(max98925->regmap, MAX98925_FORMAT, |
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M98925_DAI_BCI_MASK | M98925_DAI_WCI_MASK, invert); |
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return 0; |
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} |
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static int max98925_set_clock(struct max98925_priv *max98925, |
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struct snd_pcm_hw_params *params) |
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{ |
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unsigned int dai_sr = 0, clock, mdll, n, m; |
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struct snd_soc_component *component = max98925->component; |
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int rate = params_rate(params); |
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/* BCLK/LRCLK ratio calculation */ |
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int blr_clk_ratio = params_channels(params) * max98925->ch_size; |
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switch (blr_clk_ratio) { |
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case 32: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_32); |
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break; |
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case 48: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_48); |
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break; |
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case 64: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_BSEL_MASK, M98925_DAI_BSEL_64); |
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break; |
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default: |
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return -EINVAL; |
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} |
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switch (max98925->sysclk) { |
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case 6000000: |
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clock = 0; |
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mdll = M98925_MDLL_MULT_MCLKx16; |
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break; |
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case 11289600: |
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clock = 1; |
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mdll = M98925_MDLL_MULT_MCLKx8; |
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break; |
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case 12000000: |
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clock = 0; |
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mdll = M98925_MDLL_MULT_MCLKx8; |
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break; |
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case 12288000: |
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clock = 2; |
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mdll = M98925_MDLL_MULT_MCLKx8; |
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break; |
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default: |
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dev_info(max98925->component->dev, "unsupported sysclk %d\n", |
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max98925->sysclk); |
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return -EINVAL; |
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} |
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if (max98925_rate_value(component, rate, clock, &dai_sr, &n, &m)) |
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return -EINVAL; |
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|
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/* set DAI_SR to correct LRCLK frequency */ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE2, |
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M98925_DAI_SR_MASK, dai_sr << M98925_DAI_SR_SHIFT); |
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/* set DAI m divider */ |
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regmap_write(max98925->regmap, |
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MAX98925_DAI_CLK_DIV_M_MSBS, m >> 8); |
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regmap_write(max98925->regmap, |
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MAX98925_DAI_CLK_DIV_M_LSBS, m & 0xFF); |
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/* set DAI n divider */ |
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regmap_write(max98925->regmap, |
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MAX98925_DAI_CLK_DIV_N_MSBS, n >> 8); |
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regmap_write(max98925->regmap, |
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MAX98925_DAI_CLK_DIV_N_LSBS, n & 0xFF); |
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/* set MDLL */ |
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regmap_update_bits(max98925->regmap, MAX98925_DAI_CLK_MODE1, |
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M98925_MDLL_MULT_MASK, mdll << M98925_MDLL_MULT_SHIFT); |
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return 0; |
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} |
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|
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static int max98925_dai_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct max98925_priv *max98925 = snd_soc_component_get_drvdata(component); |
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|
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switch (params_width(params)) { |
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case 16: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_FORMAT, |
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M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_16); |
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max98925->ch_size = 16; |
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break; |
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case 24: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_FORMAT, |
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M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_24); |
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max98925->ch_size = 24; |
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break; |
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case 32: |
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regmap_update_bits(max98925->regmap, |
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MAX98925_FORMAT, |
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M98925_DAI_CHANSZ_MASK, M98925_DAI_CHANSZ_32); |
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max98925->ch_size = 32; |
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break; |
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default: |
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pr_err("%s: format unsupported %d", |
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__func__, params_format(params)); |
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return -EINVAL; |
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} |
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dev_dbg(component->dev, "%s: format supported %d", |
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__func__, params_format(params)); |
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return max98925_set_clock(max98925, params); |
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} |
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|
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static int max98925_dai_set_sysclk(struct snd_soc_dai *dai, |
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int clk_id, unsigned int freq, int dir) |
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{ |
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struct snd_soc_component *component = dai->component; |
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struct max98925_priv *max98925 = snd_soc_component_get_drvdata(component); |
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|
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switch (clk_id) { |
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case 0: |
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/* use MCLK for Left channel, right channel always BCLK */ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE1, |
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M98925_DAI_CLK_SOURCE_MASK, 0); |
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break; |
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case 1: |
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/* configure dai clock source to BCLK instead of MCLK */ |
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regmap_update_bits(max98925->regmap, |
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MAX98925_DAI_CLK_MODE1, |
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M98925_DAI_CLK_SOURCE_MASK, |
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M98925_DAI_CLK_SOURCE_MASK); |
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break; |
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default: |
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return -EINVAL; |
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} |
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max98925->sysclk = freq; |
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return 0; |
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} |
|
|
|
#define MAX98925_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ |
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
|
|
|
static const struct snd_soc_dai_ops max98925_dai_ops = { |
|
.set_sysclk = max98925_dai_set_sysclk, |
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.set_fmt = max98925_dai_set_fmt, |
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.hw_params = max98925_dai_hw_params, |
|
}; |
|
|
|
static struct snd_soc_dai_driver max98925_dai[] = { |
|
{ |
|
.name = "max98925-aif1", |
|
.playback = { |
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.stream_name = "HiFi Playback", |
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.channels_min = 1, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_8000_48000, |
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.formats = MAX98925_FORMATS, |
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}, |
|
.capture = { |
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.stream_name = "HiFi Capture", |
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.channels_min = 1, |
|
.channels_max = 2, |
|
.rates = SNDRV_PCM_RATE_8000_48000, |
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.formats = MAX98925_FORMATS, |
|
}, |
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.ops = &max98925_dai_ops, |
|
} |
|
}; |
|
|
|
static int max98925_probe(struct snd_soc_component *component) |
|
{ |
|
struct max98925_priv *max98925 = snd_soc_component_get_drvdata(component); |
|
|
|
max98925->component = component; |
|
regmap_write(max98925->regmap, MAX98925_GLOBAL_ENABLE, 0x00); |
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/* It's not the default but we need to set DAI_DLY */ |
|
regmap_write(max98925->regmap, |
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MAX98925_FORMAT, M98925_DAI_DLY_MASK); |
|
regmap_write(max98925->regmap, MAX98925_TDM_SLOT_SELECT, 0xC8); |
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG1, 0xFF); |
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regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG2, 0xFF); |
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regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG3, 0xFF); |
|
regmap_write(max98925->regmap, MAX98925_DOUT_HIZ_CFG4, 0xF0); |
|
regmap_write(max98925->regmap, MAX98925_FILTERS, 0xD8); |
|
regmap_write(max98925->regmap, MAX98925_ALC_CONFIGURATION, 0xF8); |
|
regmap_write(max98925->regmap, MAX98925_CONFIGURATION, 0xF0); |
|
/* Disable ALC muting */ |
|
regmap_write(max98925->regmap, MAX98925_BOOST_LIMITER, 0xF8); |
|
return 0; |
|
} |
|
|
|
static const struct snd_soc_component_driver soc_component_dev_max98925 = { |
|
.probe = max98925_probe, |
|
.controls = max98925_snd_controls, |
|
.num_controls = ARRAY_SIZE(max98925_snd_controls), |
|
.dapm_routes = max98925_audio_map, |
|
.num_dapm_routes = ARRAY_SIZE(max98925_audio_map), |
|
.dapm_widgets = max98925_dapm_widgets, |
|
.num_dapm_widgets = ARRAY_SIZE(max98925_dapm_widgets), |
|
.idle_bias_on = 1, |
|
.use_pmdown_time = 1, |
|
.endianness = 1, |
|
}; |
|
|
|
static const struct regmap_config max98925_regmap = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
.max_register = MAX98925_REV_VERSION, |
|
.reg_defaults = max98925_reg, |
|
.num_reg_defaults = ARRAY_SIZE(max98925_reg), |
|
.volatile_reg = max98925_volatile_register, |
|
.readable_reg = max98925_readable_register, |
|
.cache_type = REGCACHE_RBTREE, |
|
}; |
|
|
|
static int max98925_i2c_probe(struct i2c_client *i2c) |
|
{ |
|
int ret, reg; |
|
u32 value; |
|
struct max98925_priv *max98925; |
|
|
|
max98925 = devm_kzalloc(&i2c->dev, |
|
sizeof(*max98925), GFP_KERNEL); |
|
if (!max98925) |
|
return -ENOMEM; |
|
|
|
i2c_set_clientdata(i2c, max98925); |
|
max98925->regmap = devm_regmap_init_i2c(i2c, &max98925_regmap); |
|
if (IS_ERR(max98925->regmap)) { |
|
ret = PTR_ERR(max98925->regmap); |
|
dev_err(&i2c->dev, |
|
"Failed to allocate regmap: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
if (!of_property_read_u32(i2c->dev.of_node, "vmon-slot-no", &value)) { |
|
if (value > M98925_DAI_VMON_SLOT_1E_1F) { |
|
dev_err(&i2c->dev, "vmon slot number is wrong:\n"); |
|
return -EINVAL; |
|
} |
|
max98925->v_slot = value; |
|
} |
|
if (!of_property_read_u32(i2c->dev.of_node, "imon-slot-no", &value)) { |
|
if (value > M98925_DAI_IMON_SLOT_1E_1F) { |
|
dev_err(&i2c->dev, "imon slot number is wrong:\n"); |
|
return -EINVAL; |
|
} |
|
max98925->i_slot = value; |
|
} |
|
|
|
ret = regmap_read(max98925->regmap, MAX98925_REV_VERSION, ®); |
|
if (ret < 0) { |
|
dev_err(&i2c->dev, "Read revision failed\n"); |
|
return ret; |
|
} |
|
|
|
if ((reg != MAX98925_VERSION) && (reg != MAX98925_VERSION1)) { |
|
ret = -ENODEV; |
|
dev_err(&i2c->dev, "Invalid revision (%d 0x%02X)\n", |
|
ret, reg); |
|
return ret; |
|
} |
|
|
|
dev_info(&i2c->dev, "device version 0x%02X\n", reg); |
|
|
|
ret = devm_snd_soc_register_component(&i2c->dev, |
|
&soc_component_dev_max98925, |
|
max98925_dai, ARRAY_SIZE(max98925_dai)); |
|
if (ret < 0) |
|
dev_err(&i2c->dev, |
|
"Failed to register component: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
static const struct i2c_device_id max98925_i2c_id[] = { |
|
{ "max98925", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, max98925_i2c_id); |
|
|
|
#ifdef CONFIG_OF |
|
static const struct of_device_id max98925_of_match[] = { |
|
{ .compatible = "maxim,max98925", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, max98925_of_match); |
|
#endif |
|
|
|
static struct i2c_driver max98925_i2c_driver = { |
|
.driver = { |
|
.name = "max98925", |
|
.of_match_table = of_match_ptr(max98925_of_match), |
|
}, |
|
.probe_new = max98925_i2c_probe, |
|
.id_table = max98925_i2c_id, |
|
}; |
|
|
|
module_i2c_driver(max98925_i2c_driver) |
|
|
|
MODULE_DESCRIPTION("ALSA SoC MAX98925 driver"); |
|
MODULE_AUTHOR("Ralph Birt <[email protected]>, Anish kumar <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|