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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Disruptive Technologies Research AS
* Sven Schwermer <sven.svenschwermer@disruptive-technologies.com>
*/
#ifndef _REGULATOR_COMMON_H
#define _REGULATOR_COMMON_H
#include <asm/gpio.h>
struct regulator_common_plat {
struct gpio_desc gpio; /* GPIO for regulator enable control */
unsigned int startup_delay_us;
unsigned int off_on_delay_us;
unsigned int enable_count;
};
int regulator_common_of_to_plat(struct udevice *dev,
struct regulator_common_plat *plat, const
char *enable_gpio_name);
int regulator_common_get_enable(const struct udevice *dev,
struct regulator_common_plat *plat);
/*
* Enable or Disable a regulator
*
* This is a reentrant function and subsequent calls that enable will
* increase an internal counter, and disable calls will decrease the counter.
* The actual resource will be enabled when the counter gets to 1 coming from 0,
* and disabled when it reaches 0 coming from 1.
*
* @dev: regulator device
* @plat: Platform data
* @enable: bool indicating whether to enable or disable the regulator
* @return:
* 0 on Success
* -EBUSY if the regulator cannot be disabled because it's requested by
* another device
* -EALREADY if the regulator has already been enabled or has already been
* disabled
* -EACCES if there is no possibility to enable/disable the regulator
* -ve on different error situation
*/
int regulator_common_set_enable(const struct udevice *dev,
struct regulator_common_plat *plat, bool enable);
#endif /* _REGULATOR_COMMON_H */
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