name : gpio-regulator.h /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * gpio-regulator.h * * Copyright 2011 Heiko Stuebner <heiko@sntech.de> * * based on fixed.h * * Copyright 2008 Wolfson Microelectronics PLC. * * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> * * Copyright (c) 2009 Nokia Corporation * Roger Quadros <ext-roger.quadros@nokia.com> */ #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 * @input_supply: Name of the input 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; const char *input_supply; 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