// SPDX-License-Identifier: GPL-2.0-only /* * wm8903.c -- WM8903 ALSA SoC Audio driver * * Copyright 2008-12 Wolfson Microelectronics * Copyright 2011-2012 NVIDIA, Inc. * * Author: Mark Brown <[email protected]> * * TODO: * - TDM mode configuration. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/gpio/driver.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/irq.h> #include <linux/mutex.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/tlv.h> #include <sound/soc.h> #include <sound/initval.h> #include <sound/wm8903.h> #include <trace/events/asoc.h> #include "wm8903.h" /* Register defaults at reset */ static const struct reg_default wm8903_reg_defaults[] = …; #define WM8903_NUM_SUPPLIES … static const char *wm8903_supply_names[WM8903_NUM_SUPPLIES] = …; struct wm8903_priv { … }; static bool wm8903_readable_register(struct device *dev, unsigned int reg) { … } static bool wm8903_volatile_register(struct device *dev, unsigned int reg) { … } static int wm8903_cp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int wm8903_dcs_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } #define WM8903_DCS_MODE_WRITE_STOP … #define WM8903_DCS_MODE_START_STOP … static void wm8903_seq_notifier(struct snd_soc_component *component, enum snd_soc_dapm_type event, int subseq) { … } /* * When used with DAC outputs only the WM8903 charge pump supports * operation in class W mode, providing very low power consumption * when used with digital sources. Enable and disable this mode * automatically depending on the mixer configuration. * * All the relevant controls are simple switches. */ static int wm8903_class_w_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } #define SOC_DAPM_SINGLE_W(xname, reg, shift, max, invert) … static int wm8903_deemph[] = …; static int wm8903_set_deemph(struct snd_soc_component *component) { … } static int wm8903_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int wm8903_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } /* ALSA can only do steps of .01dB */ static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1); static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0); static const DECLARE_TLV_DB_SCALE(digital_sidetone_tlv, -3600, 300, 0); static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); static const DECLARE_TLV_DB_SCALE(drc_tlv_thresh, 0, 75, 0); static const DECLARE_TLV_DB_SCALE(drc_tlv_amp, -2250, 75, 0); static const DECLARE_TLV_DB_SCALE(drc_tlv_min, 0, 600, 0); static const DECLARE_TLV_DB_SCALE(drc_tlv_max, 1200, 600, 0); static const DECLARE_TLV_DB_SCALE(drc_tlv_startup, -300, 50, 0); static const char *hpf_mode_text[] = …; static SOC_ENUM_SINGLE_DECL(hpf_mode, WM8903_ADC_DIGITAL_0, 5, hpf_mode_text); static const char *osr_text[] = …; static SOC_ENUM_SINGLE_DECL(adc_osr, WM8903_ANALOGUE_ADC_0, 0, osr_text); static SOC_ENUM_SINGLE_DECL(dac_osr, WM8903_DAC_DIGITAL_1, 0, osr_text); static const char *drc_slope_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_slope_r0, WM8903_DRC_2, 3, drc_slope_text); static SOC_ENUM_SINGLE_DECL(drc_slope_r1, WM8903_DRC_2, 0, drc_slope_text); static const char *drc_attack_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_attack, WM8903_DRC_1, 12, drc_attack_text); static const char *drc_decay_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_decay, WM8903_DRC_1, 8, drc_decay_text); static const char *drc_ff_delay_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_ff_delay, WM8903_DRC_0, 5, drc_ff_delay_text); static const char *drc_qr_decay_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_qr_decay, WM8903_DRC_1, 4, drc_qr_decay_text); static const char *drc_smoothing_text[] = …; static SOC_ENUM_SINGLE_DECL(drc_smoothing, WM8903_DRC_0, 11, drc_smoothing_text); static const char *soft_mute_text[] = …; static SOC_ENUM_SINGLE_DECL(soft_mute, WM8903_DAC_DIGITAL_1, 10, soft_mute_text); static const char *mute_mode_text[] = …; static SOC_ENUM_SINGLE_DECL(mute_mode, WM8903_DAC_DIGITAL_1, 9, mute_mode_text); static const char *companding_text[] = …; static SOC_ENUM_SINGLE_DECL(dac_companding, WM8903_AUDIO_INTERFACE_0, 0, companding_text); static SOC_ENUM_SINGLE_DECL(adc_companding, WM8903_AUDIO_INTERFACE_0, 2, companding_text); static const char *input_mode_text[] = …; static SOC_ENUM_SINGLE_DECL(linput_mode_enum, WM8903_ANALOGUE_LEFT_INPUT_1, 0, input_mode_text); static SOC_ENUM_SINGLE_DECL(rinput_mode_enum, WM8903_ANALOGUE_RIGHT_INPUT_1, 0, input_mode_text); static const char *linput_mux_text[] = …; static SOC_ENUM_SINGLE_DECL(linput_enum, WM8903_ANALOGUE_LEFT_INPUT_1, 2, linput_mux_text); static SOC_ENUM_SINGLE_DECL(linput_inv_enum, WM8903_ANALOGUE_LEFT_INPUT_1, 4, linput_mux_text); static const char *rinput_mux_text[] = …; static SOC_ENUM_SINGLE_DECL(rinput_enum, WM8903_ANALOGUE_RIGHT_INPUT_1, 2, rinput_mux_text); static SOC_ENUM_SINGLE_DECL(rinput_inv_enum, WM8903_ANALOGUE_RIGHT_INPUT_1, 4, rinput_mux_text); static const char *sidetone_text[] = …; static SOC_ENUM_SINGLE_DECL(lsidetone_enum, WM8903_DAC_DIGITAL_0, 2, sidetone_text); static SOC_ENUM_SINGLE_DECL(rsidetone_enum, WM8903_DAC_DIGITAL_0, 0, sidetone_text); static const char *adcinput_text[] = …; static SOC_ENUM_SINGLE_DECL(adcinput_enum, WM8903_CLOCK_RATE_TEST_4, 9, adcinput_text); static const char *aif_text[] = …; static SOC_ENUM_SINGLE_DECL(lcapture_enum, WM8903_AUDIO_INTERFACE_0, 7, aif_text); static SOC_ENUM_SINGLE_DECL(rcapture_enum, WM8903_AUDIO_INTERFACE_0, 6, aif_text); static SOC_ENUM_SINGLE_DECL(lplay_enum, WM8903_AUDIO_INTERFACE_0, 5, aif_text); static SOC_ENUM_SINGLE_DECL(rplay_enum, WM8903_AUDIO_INTERFACE_0, 4, aif_text); static const struct snd_kcontrol_new wm8903_snd_controls[] = …; static const struct snd_kcontrol_new linput_mode_mux = …; static const struct snd_kcontrol_new rinput_mode_mux = …; static const struct snd_kcontrol_new linput_mux = …; static const struct snd_kcontrol_new linput_inv_mux = …; static const struct snd_kcontrol_new rinput_mux = …; static const struct snd_kcontrol_new rinput_inv_mux = …; static const struct snd_kcontrol_new lsidetone_mux = …; static const struct snd_kcontrol_new rsidetone_mux = …; static const struct snd_kcontrol_new adcinput_mux = …; static const struct snd_kcontrol_new lcapture_mux = …; static const struct snd_kcontrol_new rcapture_mux = …; static const struct snd_kcontrol_new lplay_mux = …; static const struct snd_kcontrol_new rplay_mux = …; static const struct snd_kcontrol_new left_output_mixer[] = …; static const struct snd_kcontrol_new right_output_mixer[] = …; static const struct snd_kcontrol_new left_speaker_mixer[] = …; static const struct snd_kcontrol_new right_speaker_mixer[] = …; static const struct snd_soc_dapm_widget wm8903_dapm_widgets[] = …; static const struct snd_soc_dapm_route wm8903_intercon[] = …; static int wm8903_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } static int wm8903_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static int wm8903_mute(struct snd_soc_dai *codec_dai, int mute, int direction) { … } /* Lookup table for CLK_SYS/fs ratio. 256fs or more is recommended * for optimal performance so we list the lower rates first and match * on the last match we find. */ static struct { … } clk_sys_ratios[] = …; /* CLK_SYS/BCLK ratios - multiplied by 10 due to .5s */ static struct { … } bclk_divs[] = …; /* Sample rates for DSP */ static struct { … } sample_rates[] = …; static int wm8903_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } /** * wm8903_mic_detect - Enable microphone detection via the WM8903 IRQ * * @component: WM8903 component * @jack: jack to report detection events on * @det: value to report for presence detection * @shrt: value to report for short detection * * Enable microphone detection via IRQ on the WM8903. If GPIOs are * being used to bring out signals to the processor then only platform * data configuration is needed for WM8903 and processor GPIOs should * be configured using snd_soc_jack_add_gpios() instead. * * The current threasholds for detection should be configured using * micdet_cfg in the platform data. Using this function will force on * the microphone bias for the device. */ int wm8903_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *jack, int det, int shrt) { … } EXPORT_SYMBOL_GPL(…); static irqreturn_t wm8903_irq(int irq, void *data) { … } #define WM8903_PLAYBACK_RATES … #define WM8903_CAPTURE_RATES … #define WM8903_FORMATS … static const struct snd_soc_dai_ops wm8903_dai_ops = …; static struct snd_soc_dai_driver wm8903_dai = …; static int wm8903_resume(struct snd_soc_component *component) { … } #ifdef CONFIG_GPIOLIB static int wm8903_gpio_request(struct gpio_chip *chip, unsigned offset) { … } static int wm8903_gpio_direction_in(struct gpio_chip *chip, unsigned offset) { … } static int wm8903_gpio_get(struct gpio_chip *chip, unsigned offset) { … } static int wm8903_gpio_direction_out(struct gpio_chip *chip, unsigned offset, int value) { … } static void wm8903_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { … } static const struct gpio_chip wm8903_template_chip = …; static void wm8903_init_gpio(struct wm8903_priv *wm8903) { … } static void wm8903_free_gpio(struct wm8903_priv *wm8903) { … } #else static void wm8903_init_gpio(struct wm8903_priv *wm8903) { } static void wm8903_free_gpio(struct wm8903_priv *wm8903) { } #endif static const struct snd_soc_component_driver soc_component_dev_wm8903 = …; static const struct regmap_config wm8903_regmap = …; static int wm8903_set_pdata_irq_trigger(struct i2c_client *i2c, struct wm8903_platform_data *pdata) { … } static int wm8903_set_pdata_from_of(struct i2c_client *i2c, struct wm8903_platform_data *pdata) { … } static int wm8903_i2c_probe(struct i2c_client *i2c) { … } static void wm8903_i2c_remove(struct i2c_client *client) { … } static const struct of_device_id wm8903_of_match[] = …; MODULE_DEVICE_TABLE(of, wm8903_of_match); static const struct i2c_device_id wm8903_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, wm8903_i2c_id); static struct i2c_driver wm8903_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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