// SPDX-License-Identifier: GPL-2.0-only /* * NAU85L40 ALSA SoC audio driver * * Copyright 2016 Nuvoton Technology Corp. * Author: John Hsu <[email protected]> */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <linux/slab.h> #include <linux/of.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dapm.h> #include <sound/initval.h> #include <sound/tlv.h> #include "nau8540.h" #define NAU_FREF_MAX … #define NAU_FVCO_MAX … #define NAU_FVCO_MIN … /* the maximum frequency of CLK_ADC */ #define CLK_ADC_MAX … /* scaling for mclk from sysclk_src output */ static const struct nau8540_fll_attr mclk_src_scaling[] = …; /* ratio for input clk freq */ static const struct nau8540_fll_attr fll_ratio[] = …; static const struct nau8540_fll_attr fll_pre_scalar[] = …; /* over sampling rate */ static const struct nau8540_osr_attr osr_adc_sel[] = …; static const struct reg_default nau8540_reg_defaults[] = …; static bool nau8540_readable_reg(struct device *dev, unsigned int reg) { … } static bool nau8540_writeable_reg(struct device *dev, unsigned int reg) { … } static bool nau8540_volatile_reg(struct device *dev, unsigned int reg) { … } static const DECLARE_TLV_DB_MINMAX(adc_vol_tlv, -12800, 3600); static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600); static const struct snd_kcontrol_new nau8540_snd_controls[] = …; static const char * const adc_channel[] = …; static SOC_ENUM_SINGLE_DECL( digital_ch4_enum, NAU8540_REG_DIGITAL_MUX, 6, adc_channel); static const struct snd_kcontrol_new digital_ch4_mux = …; static SOC_ENUM_SINGLE_DECL( digital_ch3_enum, NAU8540_REG_DIGITAL_MUX, 4, adc_channel); static const struct snd_kcontrol_new digital_ch3_mux = …; static SOC_ENUM_SINGLE_DECL( digital_ch2_enum, NAU8540_REG_DIGITAL_MUX, 2, adc_channel); static const struct snd_kcontrol_new digital_ch2_mux = …; static SOC_ENUM_SINGLE_DECL( digital_ch1_enum, NAU8540_REG_DIGITAL_MUX, 0, adc_channel); static const struct snd_kcontrol_new digital_ch1_mux = …; static int nau8540_fepga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { … } static int nau8540_precharge_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { … } static int adc_power_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { … } static int aiftx_power_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { … } static const struct snd_soc_dapm_widget nau8540_dapm_widgets[] = …; static const struct snd_soc_dapm_route nau8540_dapm_routes[] = …; static const struct nau8540_osr_attr * nau8540_get_osr(struct nau8540 *nau8540) { … } static int nau8540_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int nau8540_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int nau8540_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { … } /** * nau8540_set_tdm_slot - configure DAI TX TDM. * @dai: DAI * @tx_mask: bitmask representing active TX slots. Ex. * 0xf for normal 4 channel TDM. * 0xf0 for shifted 4 channel TDM * @rx_mask: no used. * @slots: Number of slots in use. * @slot_width: Width in bits for each slot. * * Configures a DAI for TDM operation. Only support 4 slots TDM. */ static int nau8540_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { … } static int nau8540_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { … } static const struct snd_soc_dai_ops nau8540_dai_ops = …; #define NAU8540_RATES … #define NAU8540_FORMATS … static struct snd_soc_dai_driver nau8540_dai = …; /** * nau8540_calc_fll_param - Calculate FLL parameters. * @fll_in: external clock provided to codec. * @fs: sampling rate. * @fll_param: Pointer to structure of FLL parameters. * * Calculate FLL parameters to configure codec. * * Returns 0 for success or negative error code. */ static int nau8540_calc_fll_param(unsigned int fll_in, unsigned int fs, struct nau8540_fll *fll_param) { … } static void nau8540_fll_apply(struct regmap *regmap, struct nau8540_fll *fll_param) { … } /* freq_out must be 256*Fs in order to achieve the best performance */ static int nau8540_set_pll(struct snd_soc_component *component, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { … } static int nau8540_set_sysclk(struct snd_soc_component *component, int clk_id, int source, unsigned int freq, int dir) { … } static void nau8540_reset_chip(struct regmap *regmap) { … } static void nau8540_init_regs(struct nau8540 *nau8540) { … } static int __maybe_unused nau8540_suspend(struct snd_soc_component *component) { … } static int __maybe_unused nau8540_resume(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver nau8540_component_driver = …; static const struct regmap_config nau8540_regmap_config = …; static int nau8540_i2c_probe(struct i2c_client *i2c) { … } static const struct i2c_device_id nau8540_i2c_ids[] = …; MODULE_DEVICE_TABLE(i2c, nau8540_i2c_ids); #ifdef CONFIG_OF static const struct of_device_id nau8540_of_ids[] = …; MODULE_DEVICE_TABLE(of, nau8540_of_ids); #endif static struct i2c_driver nau8540_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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