133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0
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*
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* soc-jack.h
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*
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* Copyright (C) 2019 Renesas Electronics Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*/
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#ifndef __SOC_JACK_H
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#define __SOC_JACK_H
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/**
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* struct snd_soc_jack_pin - Describes a pin to update based on jack detection
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*
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* @pin: name of the pin to update
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* @mask: bits to check for in reported jack status
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* @invert: if non-zero then pin is enabled when status is not reported
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* @list: internal list entry
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*/
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struct snd_soc_jack_pin {
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struct list_head list;
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const char *pin;
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int mask;
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bool invert;
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};
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/**
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* struct snd_soc_jack_zone - Describes voltage zones of jack detection
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*
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* @min_mv: start voltage in mv
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* @max_mv: end voltage in mv
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* @jack_type: type of jack that is expected for this voltage
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* @debounce_time: debounce_time for jack, codec driver should wait for this
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* duration before reading the adc for voltages
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* @list: internal list entry
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*/
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struct snd_soc_jack_zone {
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unsigned int min_mv;
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unsigned int max_mv;
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unsigned int jack_type;
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unsigned int debounce_time;
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struct list_head list;
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};
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/**
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* struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
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*
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* @gpio: legacy gpio number
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* @idx: gpio descriptor index within the function of the GPIO
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* consumer device
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* @gpiod_dev: GPIO consumer device
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* @name: gpio name. Also as connection ID for the GPIO consumer
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* device function name lookup
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* @report: value to report when jack detected
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* @invert: report presence in low state
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* @debounce_time: debounce time in ms
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* @wake: enable as wake source
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* @jack_status_check: callback function which overrides the detection
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* to provide more complex checks (eg, reading an
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* ADC).
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*/
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struct snd_soc_jack_gpio {
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unsigned int gpio;
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unsigned int idx;
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struct device *gpiod_dev;
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const char *name;
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int report;
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int invert;
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int debounce_time;
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bool wake;
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/* private: */
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struct snd_soc_jack *jack;
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struct delayed_work work;
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struct notifier_block pm_notifier;
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struct gpio_desc *desc;
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void *data;
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/* public: */
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int (*jack_status_check)(void *data);
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};
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struct snd_soc_jack {
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struct mutex mutex;
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struct snd_jack *jack;
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struct snd_soc_card *card;
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struct list_head pins;
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int status;
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struct blocking_notifier_head notifier;
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struct list_head jack_zones;
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};
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/* Jack reporting */
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void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
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int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_pin *pins);
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void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
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struct notifier_block *nb);
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void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
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struct notifier_block *nb);
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int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_zone *zones);
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int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
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#ifdef CONFIG_GPIOLIB
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int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_gpio *gpios);
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int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
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struct snd_soc_jack *jack,
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int count, struct snd_soc_jack_gpio *gpios);
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void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_gpio *gpios);
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#else
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static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_gpio *gpios)
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{
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return 0;
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}
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static inline int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
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struct snd_soc_jack *jack,
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int count,
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struct snd_soc_jack_gpio *gpios)
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{
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return 0;
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}
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static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
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struct snd_soc_jack_gpio *gpios)
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{
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}
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#endif
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#endif /* __SOC_JACK_H */
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