// SPDX-License-Identifier: GPL-2.0-only /* * wm8940.c -- WM8940 ALSA Soc Audio driver * * Author: Jonathan Cameron <[email protected]> * * Based on wm8510.c * Copyright 2006 Wolfson Microelectronics PLC. * Author: Liam Girdwood <[email protected]> * * Not currently handled: * Notch filter control * AUXMode (inverting vs mixer) * No means to obtain current gain if alc enabled. * No use made of gpio * Fast VMID discharge for power down * Soft Start * DLR and ALR Swaps not enabled * Digital Sidetone not supported */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> #include <sound/tlv.h> #include "wm8940.h" struct wm8940_priv { … }; static bool wm8940_volatile_register(struct device *dev, unsigned int reg) { … } static bool wm8940_readable_register(struct device *dev, unsigned int reg) { … } static const struct reg_default wm8940_reg_defaults[] = …; static const char *wm8940_companding[] = …; static SOC_ENUM_SINGLE_DECL(wm8940_adc_companding_enum, WM8940_COMPANDINGCTL, 1, wm8940_companding); static SOC_ENUM_SINGLE_DECL(wm8940_dac_companding_enum, WM8940_COMPANDINGCTL, 3, wm8940_companding); static const char *wm8940_alc_mode_text[] = …; static SOC_ENUM_SINGLE_DECL(wm8940_alc_mode_enum, WM8940_ALC3, 8, wm8940_alc_mode_text); static const char *wm8940_mic_bias_level_text[] = …; static SOC_ENUM_SINGLE_DECL(wm8940_mic_bias_level_enum, WM8940_INPUTCTL, 8, wm8940_mic_bias_level_text); static const char *wm8940_filter_mode_text[] = …; static SOC_ENUM_SINGLE_DECL(wm8940_filter_mode_enum, WM8940_ADC, 7, wm8940_filter_mode_text); static DECLARE_TLV_DB_SCALE(wm8940_spk_vol_tlv, -5700, 100, 1); static DECLARE_TLV_DB_SCALE(wm8940_att_tlv, -1000, 1000, 0); static DECLARE_TLV_DB_SCALE(wm8940_pga_vol_tlv, -1200, 75, 0); static DECLARE_TLV_DB_SCALE(wm8940_alc_min_tlv, -1200, 600, 0); static DECLARE_TLV_DB_SCALE(wm8940_alc_max_tlv, 675, 600, 0); static DECLARE_TLV_DB_SCALE(wm8940_alc_tar_tlv, -2250, 50, 0); static DECLARE_TLV_DB_SCALE(wm8940_lim_boost_tlv, 0, 100, 0); static DECLARE_TLV_DB_SCALE(wm8940_lim_thresh_tlv, -600, 100, 0); static DECLARE_TLV_DB_SCALE(wm8940_adc_tlv, -12750, 50, 1); static DECLARE_TLV_DB_SCALE(wm8940_capture_boost_vol_tlv, 0, 2000, 0); static const struct snd_kcontrol_new wm8940_snd_controls[] = …; static const struct snd_kcontrol_new wm8940_speaker_mixer_controls[] = …; static const struct snd_kcontrol_new wm8940_mono_mixer_controls[] = …; static DECLARE_TLV_DB_SCALE(wm8940_boost_vol_tlv, -1500, 300, 1); static const struct snd_kcontrol_new wm8940_input_boost_controls[] = …; static const struct snd_kcontrol_new wm8940_micpga_controls[] = …; static const struct snd_soc_dapm_widget wm8940_dapm_widgets[] = …; static const struct snd_soc_dapm_route wm8940_dapm_routes[] = …; #define wm8940_reset(c) … static int wm8940_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static int wm8940_update_clocks(struct snd_soc_dai *dai); static int wm8940_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int wm8940_mute(struct snd_soc_dai *dai, int mute, int direction) { … } static int wm8940_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } struct pll_ { … }; static struct pll_ pll_div; /* The size in bits of the pll divide multiplied by 10 * to allow rounding later */ #define FIXED_PLL_SIZE … static void pll_factors(unsigned int target, unsigned int source) { … } /* Untested at the moment */ static int wm8940_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { … } static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai, int div_id, int div) { … } static unsigned int wm8940_get_mclkdiv(unsigned int f_in, unsigned int f_out, int *mclkdiv) { … } static int wm8940_update_clocks(struct snd_soc_dai *dai) { … } static int wm8940_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { … } #define WM8940_RATES … #define WM8940_FORMATS … static const struct snd_soc_dai_ops wm8940_dai_ops = …; static struct snd_soc_dai_driver wm8940_dai = …; static int wm8940_probe(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver soc_component_dev_wm8940 = …; static const struct regmap_config wm8940_regmap = …; static int wm8940_i2c_probe(struct i2c_client *i2c) { … } static const struct i2c_device_id wm8940_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, wm8940_i2c_id); static const struct of_device_id wm8940_of_match[] = …; MODULE_DEVICE_TABLE(of, wm8940_of_match); static struct i2c_driver wm8940_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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