Viewing file:  soc-jack.h (3.73 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* 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 */
|