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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* gpio-regulator.h
*
* Copyright 2011 Heiko Stuebner <[email protected]>
*
* based on fixed.h
*
* Copyright 2008 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <[email protected]>
*
* Copyright (c) 2009 Nokia Corporation
* Roger Quadros <[email protected]>
*/
#ifndef __REGULATOR_GPIO_H
#define __REGULATOR_GPIO_H
#include <linux/gpio/consumer.h>
struct regulator_init_data;
enum regulator_type;
/**
* struct gpio_regulator_state - state description
* @value: microvolts or microamps
* @gpios: bitfield of gpio target-states for the value
*
* This structure describes a supported setting of the regulator
* and the necessary gpio-state to achieve it.
*
* The n-th bit in the bitfield describes the state of the n-th GPIO
* from the gpios-array defined in gpio_regulator_config below.
*/
struct gpio_regulator_state {
int value;
int gpios;
};
/**
* struct gpio_regulator_config - config structure
* @supply_name: Name of the regulator supply
* @enabled_at_boot: Whether regulator has been enabled at
* boot or not. 1 = Yes, 0 = No
* This is used to keep the regulator at
* the default state
* @startup_delay: Start-up time in microseconds
* @gflags: Array of GPIO configuration flags for initial
* states
* @ngpios: Number of GPIOs and configurations available
* @states: Array of gpio_regulator_state entries describing
* the gpio state for specific voltages
* @nr_states: Number of states available
* @regulator_type: either REGULATOR_CURRENT or REGULATOR_VOLTAGE
* @init_data: regulator_init_data
*
* This structure contains gpio-voltage regulator configuration
* information that must be passed by platform code to the
* gpio-voltage regulator driver.
*/
struct gpio_regulator_config {
const char *supply_name;
unsigned enabled_at_boot:1;
unsigned startup_delay;
enum gpiod_flags *gflags;
int ngpios;
struct gpio_regulator_state *states;
int nr_states;
enum regulator_type type;
struct regulator_init_data *init_data;
};
#endif