| // 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 */ |
