2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
80 lines
2 KiB
C
80 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* gpio-regulator.h
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*
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* Copyright 2011 Heiko Stuebner <heiko@sntech.de>
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*
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* based on fixed.h
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*
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* Copyright 2008 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* Copyright (c) 2009 Nokia Corporation
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* Roger Quadros <ext-roger.quadros@nokia.com>
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*/
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#ifndef __REGULATOR_GPIO_H
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#define __REGULATOR_GPIO_H
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#include <linux/gpio/consumer.h>
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struct regulator_init_data;
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enum regulator_type;
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/**
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* struct gpio_regulator_state - state description
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* @value: microvolts or microamps
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* @gpios: bitfield of gpio target-states for the value
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*
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* This structure describes a supported setting of the regulator
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* and the necessary gpio-state to achieve it.
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*
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* The n-th bit in the bitfield describes the state of the n-th GPIO
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* from the gpios-array defined in gpio_regulator_config below.
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*/
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struct gpio_regulator_state {
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int value;
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int gpios;
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};
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/**
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* struct gpio_regulator_config - config structure
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* @supply_name: Name of the regulator supply
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* @enabled_at_boot: Whether regulator has been enabled at
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* boot or not. 1 = Yes, 0 = No
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* This is used to keep the regulator at
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* the default state
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* @startup_delay: Start-up time in microseconds
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* @gflags: Array of GPIO configuration flags for initial
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* states
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* @ngpios: Number of GPIOs and configurations available
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* @states: Array of gpio_regulator_state entries describing
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* the gpio state for specific voltages
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* @nr_states: Number of states available
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* @regulator_type: either REGULATOR_CURRENT or REGULATOR_VOLTAGE
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* @init_data: regulator_init_data
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*
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* This structure contains gpio-voltage regulator configuration
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* information that must be passed by platform code to the
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* gpio-voltage regulator driver.
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*/
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struct gpio_regulator_config {
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const char *supply_name;
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unsigned enabled_at_boot:1;
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unsigned startup_delay;
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enum gpiod_flags *gflags;
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int ngpios;
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struct gpio_regulator_state *states;
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int nr_states;
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enum regulator_type type;
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struct regulator_init_data *init_data;
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};
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#endif
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