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Diffstat (limited to '')
| -rw-r--r-- | include/sound/soc-jack.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/include/sound/soc-jack.h b/include/sound/soc-jack.h new file mode 100644 index 0000000000..a0abb1ee51 --- /dev/null +++ b/include/sound/soc-jack.h @@ -0,0 +1,132 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * soc-jack.h + * + * Copyright (C) 2019 Renesas Electronics Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#ifndef __SOC_JACK_H +#define __SOC_JACK_H + +/** + * struct snd_soc_jack_pin - Describes a pin to update based on jack detection + * + * @pin: name of the pin to update + * @mask: bits to check for in reported jack status + * @invert: if non-zero then pin is enabled when status is not reported + * @list: internal list entry + */ +struct snd_soc_jack_pin { + struct list_head list; + const char *pin; + int mask; + bool invert; +}; + +/** + * struct snd_soc_jack_zone - Describes voltage zones of jack detection + * + * @min_mv: start voltage in mv + * @max_mv: end voltage in mv + * @jack_type: type of jack that is expected for this voltage + * @debounce_time: debounce_time for jack, codec driver should wait for this + * duration before reading the adc for voltages + * @list: internal list entry + */ +struct snd_soc_jack_zone { + unsigned int min_mv; + unsigned int max_mv; + unsigned int jack_type; + unsigned int debounce_time; + struct list_head list; +}; + +/** + * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection + * + * @gpio: legacy gpio number + * @idx: gpio descriptor index within the function of the GPIO + * consumer device + * @gpiod_dev: GPIO consumer device + * @name: gpio name. Also as connection ID for the GPIO consumer + * device function name lookup + * @report: value to report when jack detected + * @invert: report presence in low state + * @debounce_time: debounce time in ms + * @wake: enable as wake source + * @jack_status_check: callback function which overrides the detection + * to provide more complex checks (eg, reading an + * ADC). + */ +struct snd_soc_jack_gpio { + unsigned int gpio; + unsigned int idx; + struct device *gpiod_dev; + const char *name; + int report; + int invert; + int debounce_time; + bool wake; + + /* private: */ + struct snd_soc_jack *jack; + struct delayed_work work; + struct notifier_block pm_notifier; + struct gpio_desc *desc; + + void *data; + /* public: */ + int (*jack_status_check)(void *data); +}; + +struct snd_soc_jack { + struct mutex mutex; + struct snd_jack *jack; + struct snd_soc_card *card; + struct list_head pins; + int status; + struct blocking_notifier_head notifier; + struct list_head jack_zones; +}; + +/* Jack reporting */ +void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask); +int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_pin *pins); +void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, + struct notifier_block *nb); +void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, + struct notifier_block *nb); +int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_zone *zones); +int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage); +#ifdef CONFIG_GPIOLIB +int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_gpio *gpios); +int snd_soc_jack_add_gpiods(struct device *gpiod_dev, + struct snd_soc_jack *jack, + int count, struct snd_soc_jack_gpio *gpios); +void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_gpio *gpios); +#else +static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_gpio *gpios) +{ + return 0; +} + +static inline int snd_soc_jack_add_gpiods(struct device *gpiod_dev, + struct snd_soc_jack *jack, + int count, + struct snd_soc_jack_gpio *gpios) +{ + return 0; +} + +static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, + struct snd_soc_jack_gpio *gpios) +{ +} +#endif + +#endif /* __SOC_JACK_H */ |