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746 lines
19 KiB
746 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// Driver for the MAX9860 Mono Audio Voice Codec |
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// |
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// https://datasheets.maximintegrated.com/en/ds/MAX9860.pdf |
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// |
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// The driver does not support sidetone since the DVST register field is |
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// backwards with the mute near the maximum level instead of the minimum. |
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// |
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// Author: Peter Rosin <[email protected]> |
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// Copyright 2016 Axentia Technologies |
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#include <linux/init.h> |
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#include <linux/module.h> |
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#include <linux/clk.h> |
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#include <linux/kernel.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/regmap.h> |
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#include <linux/i2c.h> |
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#include <linux/regulator/consumer.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/tlv.h> |
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#include "max9860.h" |
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struct max9860_priv { |
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struct regmap *regmap; |
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struct regulator *dvddio; |
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struct notifier_block dvddio_nb; |
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u8 psclk; |
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unsigned long pclk_rate; |
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int fmt; |
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}; |
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static int max9860_dvddio_event(struct notifier_block *nb, |
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unsigned long event, void *data) |
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{ |
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struct max9860_priv *max9860 = container_of(nb, struct max9860_priv, |
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dvddio_nb); |
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if (event & REGULATOR_EVENT_DISABLE) { |
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regcache_mark_dirty(max9860->regmap); |
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regcache_cache_only(max9860->regmap, true); |
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} |
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return 0; |
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} |
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static const struct reg_default max9860_reg_defaults[] = { |
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{ MAX9860_PWRMAN, 0x00 }, |
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{ MAX9860_INTEN, 0x00 }, |
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{ MAX9860_SYSCLK, 0x00 }, |
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{ MAX9860_AUDIOCLKHIGH, 0x00 }, |
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{ MAX9860_AUDIOCLKLOW, 0x00 }, |
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{ MAX9860_IFC1A, 0x00 }, |
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{ MAX9860_IFC1B, 0x00 }, |
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{ MAX9860_VOICEFLTR, 0x00 }, |
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{ MAX9860_DACATTN, 0x00 }, |
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{ MAX9860_ADCLEVEL, 0x00 }, |
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{ MAX9860_DACGAIN, 0x00 }, |
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{ MAX9860_MICGAIN, 0x00 }, |
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{ MAX9860_MICADC, 0x00 }, |
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{ MAX9860_NOISEGATE, 0x00 }, |
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}; |
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|
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static bool max9860_readable(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX9860_INTRSTATUS ... MAX9860_MICGAIN: |
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case MAX9860_MICADC ... MAX9860_PWRMAN: |
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case MAX9860_REVISION: |
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return true; |
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} |
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return false; |
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} |
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static bool max9860_writeable(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX9860_INTEN ... MAX9860_MICGAIN: |
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case MAX9860_MICADC ... MAX9860_PWRMAN: |
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return true; |
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} |
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return false; |
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} |
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static bool max9860_volatile(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX9860_INTRSTATUS: |
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case MAX9860_MICREADBACK: |
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return true; |
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} |
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return false; |
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} |
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static bool max9860_precious(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case MAX9860_INTRSTATUS: |
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return true; |
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} |
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return false; |
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} |
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static const struct regmap_config max9860_regmap = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.readable_reg = max9860_readable, |
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.writeable_reg = max9860_writeable, |
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.volatile_reg = max9860_volatile, |
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.precious_reg = max9860_precious, |
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.max_register = MAX9860_MAX_REGISTER, |
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.reg_defaults = max9860_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(max9860_reg_defaults), |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static const DECLARE_TLV_DB_SCALE(dva_tlv, -9100, 100, 1); |
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static const DECLARE_TLV_DB_SCALE(dvg_tlv, 0, 600, 0); |
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); |
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static const DECLARE_TLV_DB_RANGE(pam_tlv, |
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0, MAX9860_PAM_MAX - 1, TLV_DB_SCALE_ITEM(-2000, 2000, 1), |
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MAX9860_PAM_MAX, MAX9860_PAM_MAX, TLV_DB_SCALE_ITEM(3000, 0, 0)); |
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static const DECLARE_TLV_DB_SCALE(pgam_tlv, 0, 100, 0); |
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static const DECLARE_TLV_DB_SCALE(anth_tlv, -7600, 400, 1); |
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static const DECLARE_TLV_DB_SCALE(agcth_tlv, -1800, 100, 0); |
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static const char * const agchld_text[] = { |
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"AGC Disabled", "50ms", "100ms", "400ms" |
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}; |
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static SOC_ENUM_SINGLE_DECL(agchld_enum, MAX9860_MICADC, |
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MAX9860_AGCHLD_SHIFT, agchld_text); |
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|
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static const char * const agcsrc_text[] = { |
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"Left ADC", "Left/Right ADC" |
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}; |
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static SOC_ENUM_SINGLE_DECL(agcsrc_enum, MAX9860_MICADC, |
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MAX9860_AGCSRC_SHIFT, agcsrc_text); |
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|
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static const char * const agcatk_text[] = { |
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"3ms", "12ms", "50ms", "200ms" |
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}; |
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static SOC_ENUM_SINGLE_DECL(agcatk_enum, MAX9860_MICADC, |
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MAX9860_AGCATK_SHIFT, agcatk_text); |
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static const char * const agcrls_text[] = { |
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"78ms", "156ms", "312ms", "625ms", |
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"1.25s", "2.5s", "5s", "10s" |
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}; |
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static SOC_ENUM_SINGLE_DECL(agcrls_enum, MAX9860_MICADC, |
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MAX9860_AGCRLS_SHIFT, agcrls_text); |
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static const char * const filter_text[] = { |
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"Disabled", |
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"Elliptical HP 217Hz notch (16kHz)", |
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"Butterworth HP 500Hz (16kHz)", |
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"Elliptical HP 217Hz notch (8kHz)", |
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"Butterworth HP 500Hz (8kHz)", |
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"Butterworth HP 200Hz (48kHz)" |
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}; |
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static SOC_ENUM_SINGLE_DECL(avflt_enum, MAX9860_VOICEFLTR, |
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MAX9860_AVFLT_SHIFT, filter_text); |
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static SOC_ENUM_SINGLE_DECL(dvflt_enum, MAX9860_VOICEFLTR, |
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MAX9860_DVFLT_SHIFT, filter_text); |
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static const struct snd_kcontrol_new max9860_controls[] = { |
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SOC_SINGLE_TLV("Master Playback Volume", MAX9860_DACATTN, |
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MAX9860_DVA_SHIFT, MAX9860_DVA_MUTE, 1, dva_tlv), |
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SOC_SINGLE_TLV("DAC Gain Volume", MAX9860_DACGAIN, |
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MAX9860_DVG_SHIFT, MAX9860_DVG_MAX, 0, dvg_tlv), |
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SOC_DOUBLE_TLV("Line Capture Volume", MAX9860_ADCLEVEL, |
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MAX9860_ADCLL_SHIFT, MAX9860_ADCRL_SHIFT, MAX9860_ADCxL_MIN, 1, |
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adc_tlv), |
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SOC_ENUM("AGC Hold Time", agchld_enum), |
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SOC_ENUM("AGC/Noise Gate Source", agcsrc_enum), |
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SOC_ENUM("AGC Attack Time", agcatk_enum), |
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SOC_ENUM("AGC Release Time", agcrls_enum), |
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SOC_SINGLE_TLV("Noise Gate Threshold Volume", MAX9860_NOISEGATE, |
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MAX9860_ANTH_SHIFT, MAX9860_ANTH_MAX, 0, anth_tlv), |
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SOC_SINGLE_TLV("AGC Signal Threshold Volume", MAX9860_NOISEGATE, |
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MAX9860_AGCTH_SHIFT, MAX9860_AGCTH_MIN, 1, agcth_tlv), |
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SOC_SINGLE_TLV("Mic PGA Volume", MAX9860_MICGAIN, |
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MAX9860_PGAM_SHIFT, MAX9860_PGAM_MIN, 1, pgam_tlv), |
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SOC_SINGLE_TLV("Mic Preamp Volume", MAX9860_MICGAIN, |
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MAX9860_PAM_SHIFT, MAX9860_PAM_MAX, 0, pam_tlv), |
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SOC_ENUM("ADC Filter", avflt_enum), |
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SOC_ENUM("DAC Filter", dvflt_enum), |
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}; |
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static const struct snd_soc_dapm_widget max9860_dapm_widgets[] = { |
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SND_SOC_DAPM_INPUT("MICL"), |
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SND_SOC_DAPM_INPUT("MICR"), |
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SND_SOC_DAPM_ADC("ADCL", NULL, MAX9860_PWRMAN, MAX9860_ADCLEN_SHIFT, 0), |
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SND_SOC_DAPM_ADC("ADCR", NULL, MAX9860_PWRMAN, MAX9860_ADCREN_SHIFT, 0), |
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SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_DAC("DAC", NULL, MAX9860_PWRMAN, MAX9860_DACEN_SHIFT, 0), |
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SND_SOC_DAPM_OUTPUT("OUT"), |
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SND_SOC_DAPM_SUPPLY("Supply", SND_SOC_NOPM, 0, 0, |
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NULL, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), |
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SND_SOC_DAPM_REGULATOR_SUPPLY("AVDD", 0, 0), |
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SND_SOC_DAPM_REGULATOR_SUPPLY("DVDD", 0, 0), |
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SND_SOC_DAPM_CLOCK_SUPPLY("mclk"), |
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}; |
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static const struct snd_soc_dapm_route max9860_dapm_routes[] = { |
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{ "ADCL", NULL, "MICL" }, |
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{ "ADCR", NULL, "MICR" }, |
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{ "AIFOUTL", NULL, "ADCL" }, |
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{ "AIFOUTR", NULL, "ADCR" }, |
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{ "DAC", NULL, "AIFINL" }, |
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{ "DAC", NULL, "AIFINR" }, |
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{ "OUT", NULL, "DAC" }, |
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{ "Supply", NULL, "AVDD" }, |
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{ "Supply", NULL, "DVDD" }, |
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{ "Supply", NULL, "mclk" }, |
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{ "DAC", NULL, "Supply" }, |
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{ "ADCL", NULL, "Supply" }, |
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{ "ADCR", NULL, "Supply" }, |
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}; |
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static int max9860_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 max9860_priv *max9860 = snd_soc_component_get_drvdata(component); |
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u8 master; |
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u8 ifc1a = 0; |
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u8 ifc1b = 0; |
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u8 sysclk = 0; |
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unsigned long n; |
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int ret; |
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dev_dbg(component->dev, "hw_params %u Hz, %u channels\n", |
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params_rate(params), |
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params_channels(params)); |
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if (params_channels(params) == 2) |
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ifc1b |= MAX9860_ST; |
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switch (max9860->fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBS_CFS: |
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master = 0; |
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break; |
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case SND_SOC_DAIFMT_CBM_CFM: |
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master = MAX9860_MASTER; |
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break; |
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default: |
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return -EINVAL; |
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} |
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ifc1a |= master; |
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if (master) { |
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if (params_width(params) * params_channels(params) > 48) |
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ifc1b |= MAX9860_BSEL_64X; |
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else |
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ifc1b |= MAX9860_BSEL_48X; |
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} |
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switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_I2S: |
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ifc1a |= MAX9860_DDLY; |
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ifc1b |= MAX9860_ADLY; |
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break; |
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case SND_SOC_DAIFMT_LEFT_J: |
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ifc1a |= MAX9860_WCI; |
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break; |
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case SND_SOC_DAIFMT_DSP_A: |
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if (params_width(params) != 16) { |
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dev_err(component->dev, |
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"DSP_A works for 16 bits per sample only.\n"); |
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return -EINVAL; |
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} |
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ifc1a |= MAX9860_DDLY | MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM; |
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ifc1b |= MAX9860_ADLY; |
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break; |
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case SND_SOC_DAIFMT_DSP_B: |
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if (params_width(params) != 16) { |
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dev_err(component->dev, |
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"DSP_B works for 16 bits per sample only.\n"); |
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return -EINVAL; |
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} |
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ifc1a |= MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM; |
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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 (max9860->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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switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_DSP_A: |
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case SND_SOC_DAIFMT_DSP_B: |
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return -EINVAL; |
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} |
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ifc1a ^= MAX9860_WCI; |
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break; |
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case SND_SOC_DAIFMT_IB_IF: |
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switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
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case SND_SOC_DAIFMT_DSP_A: |
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case SND_SOC_DAIFMT_DSP_B: |
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return -EINVAL; |
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} |
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ifc1a ^= MAX9860_WCI; |
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fallthrough; |
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case SND_SOC_DAIFMT_IB_NF: |
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ifc1a ^= MAX9860_DBCI; |
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ifc1b ^= MAX9860_ABCI; |
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break; |
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default: |
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return -EINVAL; |
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} |
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dev_dbg(component->dev, "IFC1A %02x\n", ifc1a); |
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ret = regmap_write(max9860->regmap, MAX9860_IFC1A, ifc1a); |
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if (ret) { |
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dev_err(component->dev, "Failed to set IFC1A: %d\n", ret); |
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return ret; |
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} |
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dev_dbg(component->dev, "IFC1B %02x\n", ifc1b); |
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ret = regmap_write(max9860->regmap, MAX9860_IFC1B, ifc1b); |
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if (ret) { |
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dev_err(component->dev, "Failed to set IFC1B: %d\n", ret); |
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return ret; |
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} |
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|
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/* |
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* Check if Integer Clock Mode is possible, but avoid it in slave mode |
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* since we then do not know if lrclk is derived from pclk and the |
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* datasheet mentions that the frequencies have to match exactly in |
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* order for this to work. |
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*/ |
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if (params_rate(params) == 8000 || params_rate(params) == 16000) { |
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if (master) { |
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switch (max9860->pclk_rate) { |
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case 12000000: |
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sysclk = MAX9860_FREQ_12MHZ; |
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break; |
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case 13000000: |
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sysclk = MAX9860_FREQ_13MHZ; |
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break; |
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case 19200000: |
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sysclk = MAX9860_FREQ_19_2MHZ; |
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break; |
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default: |
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/* |
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* Integer Clock Mode not possible. Leave |
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* sysclk at zero and fall through to the |
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* code below for PLL mode. |
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*/ |
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break; |
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} |
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|
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if (sysclk && params_rate(params) == 16000) |
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sysclk |= MAX9860_16KHZ; |
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} |
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} |
|
|
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/* |
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* Largest possible n: |
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* 65536 * 96 * 48kHz / 10MHz -> 30199 |
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* Smallest possible n: |
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* 65536 * 96 * 8kHz / 20MHz -> 2517 |
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* Both fit nicely in the available 15 bits, no need to apply any mask. |
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*/ |
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n = DIV_ROUND_CLOSEST_ULL(65536ULL * 96 * params_rate(params), |
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max9860->pclk_rate); |
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|
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if (!sysclk) { |
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/* PLL mode */ |
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if (params_rate(params) > 24000) |
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sysclk |= MAX9860_16KHZ; |
|
|
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if (!master) |
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n |= 1; /* trigger rapid pll lock mode */ |
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} |
|
|
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sysclk |= max9860->psclk; |
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dev_dbg(component->dev, "SYSCLK %02x\n", sysclk); |
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ret = regmap_write(max9860->regmap, |
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MAX9860_SYSCLK, sysclk); |
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if (ret) { |
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dev_err(component->dev, "Failed to set SYSCLK: %d\n", ret); |
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return ret; |
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} |
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dev_dbg(component->dev, "N %lu\n", n); |
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ret = regmap_write(max9860->regmap, |
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MAX9860_AUDIOCLKHIGH, n >> 8); |
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if (ret) { |
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dev_err(component->dev, "Failed to set NHI: %d\n", ret); |
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return ret; |
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} |
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ret = regmap_write(max9860->regmap, |
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MAX9860_AUDIOCLKLOW, n & 0xff); |
|
if (ret) { |
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dev_err(component->dev, "Failed to set NLO: %d\n", ret); |
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return ret; |
|
} |
|
|
|
if (!master) { |
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dev_dbg(component->dev, "Enable PLL\n"); |
|
ret = regmap_update_bits(max9860->regmap, MAX9860_AUDIOCLKHIGH, |
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MAX9860_PLL, MAX9860_PLL); |
|
if (ret) { |
|
dev_err(component->dev, "Failed to enable PLL: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
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static int max9860_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
|
{ |
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struct snd_soc_component *component = dai->component; |
|
struct max9860_priv *max9860 = snd_soc_component_get_drvdata(component); |
|
|
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBM_CFM: |
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case SND_SOC_DAIFMT_CBS_CFS: |
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max9860->fmt = fmt; |
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return 0; |
|
|
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default: |
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return -EINVAL; |
|
} |
|
} |
|
|
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static const struct snd_soc_dai_ops max9860_dai_ops = { |
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.hw_params = max9860_hw_params, |
|
.set_fmt = max9860_set_fmt, |
|
}; |
|
|
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static struct snd_soc_dai_driver max9860_dai = { |
|
.name = "max9860-hifi", |
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.playback = { |
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.stream_name = "Playback", |
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.channels_min = 1, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 8000, |
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.rate_max = 48000, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE | |
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SNDRV_PCM_FMTBIT_S24_LE | |
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SNDRV_PCM_FMTBIT_S32_LE, |
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}, |
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.capture = { |
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.stream_name = "Capture", |
|
.channels_min = 1, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.rate_min = 8000, |
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.rate_max = 48000, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE | |
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SNDRV_PCM_FMTBIT_S24_LE | |
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SNDRV_PCM_FMTBIT_S32_LE, |
|
}, |
|
.ops = &max9860_dai_ops, |
|
.symmetric_rate = 1, |
|
}; |
|
|
|
static int max9860_set_bias_level(struct snd_soc_component *component, |
|
enum snd_soc_bias_level level) |
|
{ |
|
struct max9860_priv *max9860 = dev_get_drvdata(component->dev); |
|
int ret; |
|
|
|
switch (level) { |
|
case SND_SOC_BIAS_ON: |
|
case SND_SOC_BIAS_PREPARE: |
|
break; |
|
|
|
case SND_SOC_BIAS_STANDBY: |
|
ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN, |
|
MAX9860_SHDN, MAX9860_SHDN); |
|
if (ret) { |
|
dev_err(component->dev, "Failed to remove SHDN: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
break; |
|
|
|
case SND_SOC_BIAS_OFF: |
|
ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN, |
|
MAX9860_SHDN, 0); |
|
if (ret) { |
|
dev_err(component->dev, "Failed to request SHDN: %d\n", |
|
ret); |
|
return ret; |
|
} |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct snd_soc_component_driver max9860_component_driver = { |
|
.set_bias_level = max9860_set_bias_level, |
|
.controls = max9860_controls, |
|
.num_controls = ARRAY_SIZE(max9860_controls), |
|
.dapm_widgets = max9860_dapm_widgets, |
|
.num_dapm_widgets = ARRAY_SIZE(max9860_dapm_widgets), |
|
.dapm_routes = max9860_dapm_routes, |
|
.num_dapm_routes = ARRAY_SIZE(max9860_dapm_routes), |
|
.use_pmdown_time = 1, |
|
.endianness = 1, |
|
.non_legacy_dai_naming = 1, |
|
}; |
|
|
|
#ifdef CONFIG_PM |
|
static int max9860_suspend(struct device *dev) |
|
{ |
|
struct max9860_priv *max9860 = dev_get_drvdata(dev); |
|
int ret; |
|
|
|
ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK, |
|
MAX9860_PSCLK, MAX9860_PSCLK_OFF); |
|
if (ret) { |
|
dev_err(dev, "Failed to disable clock: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
regulator_disable(max9860->dvddio); |
|
|
|
return 0; |
|
} |
|
|
|
static int max9860_resume(struct device *dev) |
|
{ |
|
struct max9860_priv *max9860 = dev_get_drvdata(dev); |
|
int ret; |
|
|
|
ret = regulator_enable(max9860->dvddio); |
|
if (ret) { |
|
dev_err(dev, "Failed to enable DVDDIO: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
regcache_cache_only(max9860->regmap, false); |
|
ret = regcache_sync(max9860->regmap); |
|
if (ret) { |
|
dev_err(dev, "Failed to sync cache: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK, |
|
MAX9860_PSCLK, max9860->psclk); |
|
if (ret) { |
|
dev_err(dev, "Failed to enable clock: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
#endif |
|
|
|
static const struct dev_pm_ops max9860_pm_ops = { |
|
SET_RUNTIME_PM_OPS(max9860_suspend, max9860_resume, NULL) |
|
}; |
|
|
|
static int max9860_probe(struct i2c_client *i2c) |
|
{ |
|
struct device *dev = &i2c->dev; |
|
struct max9860_priv *max9860; |
|
int ret; |
|
struct clk *mclk; |
|
unsigned long mclk_rate; |
|
int i; |
|
int intr; |
|
|
|
max9860 = devm_kzalloc(dev, sizeof(struct max9860_priv), GFP_KERNEL); |
|
if (!max9860) |
|
return -ENOMEM; |
|
|
|
max9860->dvddio = devm_regulator_get(dev, "DVDDIO"); |
|
if (IS_ERR(max9860->dvddio)) { |
|
ret = PTR_ERR(max9860->dvddio); |
|
if (ret != -EPROBE_DEFER) |
|
dev_err(dev, "Failed to get DVDDIO supply: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
max9860->dvddio_nb.notifier_call = max9860_dvddio_event; |
|
|
|
ret = devm_regulator_register_notifier(max9860->dvddio, |
|
&max9860->dvddio_nb); |
|
if (ret) |
|
dev_err(dev, "Failed to register DVDDIO notifier: %d\n", ret); |
|
|
|
ret = regulator_enable(max9860->dvddio); |
|
if (ret != 0) { |
|
dev_err(dev, "Failed to enable DVDDIO: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
max9860->regmap = devm_regmap_init_i2c(i2c, &max9860_regmap); |
|
if (IS_ERR(max9860->regmap)) { |
|
ret = PTR_ERR(max9860->regmap); |
|
goto err_regulator; |
|
} |
|
|
|
dev_set_drvdata(dev, max9860); |
|
|
|
/* |
|
* mclk has to be in the 10MHz to 60MHz range. |
|
* psclk is used to scale mclk into pclk so that |
|
* pclk is in the 10MHz to 20MHz range. |
|
*/ |
|
mclk = clk_get(dev, "mclk"); |
|
|
|
if (IS_ERR(mclk)) { |
|
ret = PTR_ERR(mclk); |
|
if (ret != -EPROBE_DEFER) |
|
dev_err(dev, "Failed to get MCLK: %d\n", ret); |
|
goto err_regulator; |
|
} |
|
|
|
mclk_rate = clk_get_rate(mclk); |
|
clk_put(mclk); |
|
|
|
if (mclk_rate > 60000000 || mclk_rate < 10000000) { |
|
dev_err(dev, "Bad mclk %luHz (needs 10MHz - 60MHz)\n", |
|
mclk_rate); |
|
ret = -EINVAL; |
|
goto err_regulator; |
|
} |
|
if (mclk_rate >= 40000000) |
|
max9860->psclk = 3; |
|
else if (mclk_rate >= 20000000) |
|
max9860->psclk = 2; |
|
else |
|
max9860->psclk = 1; |
|
max9860->pclk_rate = mclk_rate >> (max9860->psclk - 1); |
|
max9860->psclk <<= MAX9860_PSCLK_SHIFT; |
|
dev_dbg(dev, "mclk %lu pclk %lu\n", mclk_rate, max9860->pclk_rate); |
|
|
|
regcache_cache_bypass(max9860->regmap, true); |
|
for (i = 0; i < max9860_regmap.num_reg_defaults; ++i) { |
|
ret = regmap_write(max9860->regmap, |
|
max9860_regmap.reg_defaults[i].reg, |
|
max9860_regmap.reg_defaults[i].def); |
|
if (ret) { |
|
dev_err(dev, "Failed to initialize register %u: %d\n", |
|
max9860_regmap.reg_defaults[i].reg, ret); |
|
goto err_regulator; |
|
} |
|
} |
|
regcache_cache_bypass(max9860->regmap, false); |
|
|
|
ret = regmap_read(max9860->regmap, MAX9860_INTRSTATUS, &intr); |
|
if (ret) { |
|
dev_err(dev, "Failed to clear INTRSTATUS: %d\n", ret); |
|
goto err_regulator; |
|
} |
|
|
|
pm_runtime_set_active(dev); |
|
pm_runtime_enable(dev); |
|
pm_runtime_idle(dev); |
|
|
|
ret = devm_snd_soc_register_component(dev, &max9860_component_driver, |
|
&max9860_dai, 1); |
|
if (ret) { |
|
dev_err(dev, "Failed to register CODEC: %d\n", ret); |
|
goto err_pm; |
|
} |
|
|
|
return 0; |
|
|
|
err_pm: |
|
pm_runtime_disable(dev); |
|
err_regulator: |
|
regulator_disable(max9860->dvddio); |
|
return ret; |
|
} |
|
|
|
static int max9860_remove(struct i2c_client *i2c) |
|
{ |
|
struct device *dev = &i2c->dev; |
|
struct max9860_priv *max9860 = dev_get_drvdata(dev); |
|
|
|
pm_runtime_disable(dev); |
|
regulator_disable(max9860->dvddio); |
|
return 0; |
|
} |
|
|
|
static const struct i2c_device_id max9860_i2c_id[] = { |
|
{ "max9860", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, max9860_i2c_id); |
|
|
|
static const struct of_device_id max9860_of_match[] = { |
|
{ .compatible = "maxim,max9860", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, max9860_of_match); |
|
|
|
static struct i2c_driver max9860_i2c_driver = { |
|
.probe_new = max9860_probe, |
|
.remove = max9860_remove, |
|
.id_table = max9860_i2c_id, |
|
.driver = { |
|
.name = "max9860", |
|
.of_match_table = max9860_of_match, |
|
.pm = &max9860_pm_ops, |
|
}, |
|
}; |
|
|
|
module_i2c_driver(max9860_i2c_driver); |
|
|
|
MODULE_DESCRIPTION("ASoC MAX9860 Mono Audio Voice Codec driver"); |
|
MODULE_AUTHOR("Peter Rosin <[email protected]>"); |
|
MODULE_LICENSE("GPL v2");
|
|
|