// SPDX-License-Identifier: GPL-2.0-or-later /* * wm8753.c -- WM8753 ALSA Soc Audio driver * * Copyright 2003-11 Wolfson Microelectronics PLC. * Author: Liam Girdwood <[email protected]> * * Notes: * The WM8753 is a low power, high quality stereo codec with integrated PCM * codec designed for portable digital telephony applications. * * Dual DAI:- * * This driver support 2 DAI PCM's. This makes the default PCM available for * HiFi audio (e.g. MP3, ogg) playback/capture and the other PCM available for * voice. * * Please note that the voice PCM can be connected directly to a Bluetooth * codec or GSM modem and thus cannot be read or written to, although it is * available to be configured with snd_hw_params(), etc and kcontrols in the * normal alsa manner. * * Fast DAI switching:- * * The driver can now fast switch between the DAI configurations via a * an alsa kcontrol. This allows the PCM to remain open. */ #include <linux/mod_devicetable.h> #include <linux/module.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/spi/spi.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 <asm/div64.h> #include "wm8753.h" static int caps_charge = …; module_param(caps_charge, int, 0); MODULE_PARM_DESC(…) …; static int wm8753_hifi_write_dai_fmt(struct snd_soc_component *component, unsigned int fmt); static int wm8753_voice_write_dai_fmt(struct snd_soc_component *component, unsigned int fmt); /* * wm8753 register cache * We can't read the WM8753 register space when we * are using 2 wire for device control, so we cache them instead. */ static const struct reg_default wm8753_reg_defaults[] = …; static bool wm8753_volatile(struct device *dev, unsigned int reg) { … } /* codec private data */ struct wm8753_priv { … }; #define wm8753_reset(c) … /* * WM8753 Controls */ static const char *wm8753_base[] = …; static const char *wm8753_base_filter[] = …; static const char *wm8753_treble[] = …; static const char *wm8753_alc_func[] = …; static const char *wm8753_ng_type[] = …; static const char *wm8753_3d_func[] = …; static const char *wm8753_3d_uc[] = …; static const char *wm8753_3d_lc[] = …; static const char *wm8753_deemp[] = …; static const char *wm8753_mono_mix[] = …; static const char *wm8753_dac_phase[] = …; static const char *wm8753_line_mix[] = …; static const char *wm8753_mono_mux[] = …; static const char *wm8753_right_mux[] = …; static const char *wm8753_left_mux[] = …; static const char *wm8753_rxmsel[] = …; static const char *wm8753_sidetone_mux[] = …; static const char *wm8753_mono2_src[] = …; static const char *wm8753_out3[] = …; static const char *wm8753_out4[] = …; static const char *wm8753_radcsel[] = …; static const char *wm8753_ladcsel[] = …; static const char *wm8753_mono_adc[] = …; static const char *wm8753_adc_hp[] = …; static const char *wm8753_adc_filter[] = …; static const char *wm8753_mic_sel[] = …; static const char *wm8753_dai_mode[] = …; static const char *wm8753_dat_sel[] = …; static const char *wm8753_rout2_phase[] = …; static const struct soc_enum wm8753_enum[] = …; static int wm8753_get_dai(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int wm8753_set_dai(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 300, 0); static const DECLARE_TLV_DB_SCALE(mic_preamp_tlv, 1200, 600, 0); static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); static const DECLARE_TLV_DB_RANGE(out_tlv, /* 0000000 - 0101111 = "Analogue mute" */ 0, 48, TLV_DB_SCALE_ITEM(-25500, 0, 0), 48, 127, TLV_DB_SCALE_ITEM(-7300, 100, 0) ); static const DECLARE_TLV_DB_SCALE(mix_tlv, -1500, 300, 0); static const DECLARE_TLV_DB_SCALE(voice_mix_tlv, -1200, 300, 0); static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0); static const struct snd_kcontrol_new wm8753_snd_controls[] = …; /* * _DAPM_ Controls */ /* Left Mixer */ static const struct snd_kcontrol_new wm8753_left_mixer_controls[] = …; /* Right mixer */ static const struct snd_kcontrol_new wm8753_right_mixer_controls[] = …; /* Mono mixer */ static const struct snd_kcontrol_new wm8753_mono_mixer_controls[] = …; /* Mono 2 Mux */ static const struct snd_kcontrol_new wm8753_mono2_controls = …; /* Out 3 Mux */ static const struct snd_kcontrol_new wm8753_out3_controls = …; /* Out 4 Mux */ static const struct snd_kcontrol_new wm8753_out4_controls = …; /* ADC Mono Mix */ static const struct snd_kcontrol_new wm8753_adc_mono_controls = …; /* Record mixer */ static const struct snd_kcontrol_new wm8753_record_mixer_controls[] = …; /* Left ADC mux */ static const struct snd_kcontrol_new wm8753_adc_left_controls = …; /* Right ADC mux */ static const struct snd_kcontrol_new wm8753_adc_right_controls = …; /* MIC mux */ static const struct snd_kcontrol_new wm8753_mic_mux_controls = …; /* ALC mixer */ static const struct snd_kcontrol_new wm8753_alc_mixer_controls[] = …; /* Left Line mux */ static const struct snd_kcontrol_new wm8753_line_left_controls = …; /* Right Line mux */ static const struct snd_kcontrol_new wm8753_line_right_controls = …; /* Mono Line mux */ static const struct snd_kcontrol_new wm8753_line_mono_controls = …; /* Line mux and mixer */ static const struct snd_kcontrol_new wm8753_line_mux_mix_controls = …; /* Rx mux and mixer */ static const struct snd_kcontrol_new wm8753_rx_mux_mix_controls = …; /* Mic Selector Mux */ static const struct snd_kcontrol_new wm8753_mic_sel_mux_controls = …; static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = …; static const struct snd_soc_dapm_route wm8753_dapm_routes[] = …; /* PLL divisors */ struct _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(struct _pll_div *pll_div, unsigned int target, unsigned int source) { … } static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { … } struct _coeff_div { … }; /* codec hifi mclk (after PLL) clock divider coefficients */ static const struct _coeff_div coeff_div[] = …; static int get_coeff(int mclk, int rate) { … } /* * Clock after PLL and dividers */ static int wm8753_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } /* * Set's ADC and Voice DAC format. */ static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } /* * Set PCM DAI bit size and sample rate. */ static int wm8753_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } /* * Set's PCM dai fmt and BCLK. */ static int wm8753_pcm_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_set_dai_clkdiv(struct snd_soc_dai *codec_dai, int div_id, int div) { … } /* * Set's HiFi DAC format. */ static int wm8753_hdac_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } /* * Set's I2S DAI format. */ static int wm8753_i2s_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } /* * Set PCM DAI bit size and sample rate. */ static int wm8753_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int wm8753_mode1v_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_mode1h_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_mode2_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_mode3_4_set_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_hifi_write_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { … } static int wm8753_hifi_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_component *component = codec_dai->component; struct wm8753_priv *wm8753 = snd_soc_component_get_drvdata(component); wm8753->hifi_fmt = fmt; return wm8753_hifi_write_dai_fmt(component, fmt); }; static int wm8753_voice_write_dai_fmt(struct snd_soc_component *component, unsigned int fmt) { struct wm8753_priv *wm8753 = snd_soc_component_get_drvdata(component); int ret = 0; if (wm8753->dai_func != 0) return 0; ret = wm8753_mode1v_set_dai_fmt(component, fmt); if (ret) return ret; ret = wm8753_pcm_set_dai_fmt(component, fmt); if (ret) return ret; return 0; }; static int wm8753_voice_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_component *component = codec_dai->component; struct wm8753_priv *wm8753 = snd_soc_component_get_drvdata(component); wm8753->voice_fmt = fmt; return wm8753_voice_write_dai_fmt(component, fmt); }; static int wm8753_mute(struct snd_soc_dai *dai, int mute, int direction) { … } static void wm8753_charge_work(struct work_struct *work) { … } static int wm8753_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } #define WM8753_RATES … #define WM8753_FORMATS … /* * The WM8753 supports up to 4 different and mutually exclusive DAI * configurations. This gives 2 PCM's available for use, hifi and voice. * NOTE: The Voice PCM cannot play or capture audio to the CPU as it's DAI * is connected between the wm8753 and a BT codec or GSM modem. * * 1. Voice over PCM DAI - HIFI DAC over HIFI DAI * 2. Voice over HIFI DAI - HIFI disabled * 3. Voice disabled - HIFI over HIFI * 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture */ static const struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode = …; static const struct snd_soc_dai_ops wm8753_dai_ops_voice_mode = …; static struct snd_soc_dai_driver wm8753_dai[] = …; static int wm8753_resume(struct snd_soc_component *component) { … } static int wm8753_probe(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver soc_component_dev_wm8753 = …; static const struct of_device_id wm8753_of_match[] = …; MODULE_DEVICE_TABLE(of, wm8753_of_match); static const struct regmap_config wm8753_regmap = …; #if defined(CONFIG_SPI_MASTER) static int wm8753_spi_probe(struct spi_device *spi) { … } static struct spi_driver wm8753_spi_driver = …; #endif /* CONFIG_SPI_MASTER */ #if IS_ENABLED(CONFIG_I2C) static int wm8753_i2c_probe(struct i2c_client *i2c) { … } static const struct i2c_device_id wm8753_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, wm8753_i2c_id); static struct i2c_driver wm8753_i2c_driver = …; #endif static int __init wm8753_modinit(void) { … } module_init(…) …; static void __exit wm8753_exit(void) { … } module_exit(wm8753_exit); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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