Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/include/linux/regulator/fixed.h
/*
* 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>
*
* 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.
*/
#ifndef __REGULATOR_FIXED_H
#define __REGULATOR_FIXED_H
struct regulator_init_data;
/**
* struct fixed_voltage_config - fixed_voltage_config structure
* @supply_name: Name of the regulator supply
* @input_supply: Name of the input regulator supply
* @microvolts: Output voltage of regulator
* @gpio: GPIO to use for enable control
* set to -EINVAL if not used
* @startup_delay: Start-up time in microseconds
* @gpio_is_open_drain: Gpio pin is open drain or normal type.
* If it is open drain type then HIGH will be set
* through PULL-UP with setting gpio as input
* and low will be set as gpio-output with driven
* to low. For non-open-drain case, the gpio will
* will be in output and drive to low/high accordingly.
* @enable_high: Polarity of enable GPIO
* 1 = Active high, 0 = Active low
* @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
* @init_data: regulator_init_data
*
* This structure contains fixed voltage regulator configuration
* information that must be passed by platform code to the fixed
* voltage regulator driver.
*/
struct fixed_voltage_config {
const char *supply_name;
const char *input_supply;
int microvolts;
int gpio;
unsigned startup_delay;
unsigned gpio_is_open_drain:1;
unsigned enable_high:1;
unsigned enabled_at_boot:1;
struct regulator_init_data *init_data;
};
struct regulator_consumer_supply;
#if IS_ENABLED(CONFIG_REGULATOR)
struct platform_device *regulator_register_always_on(int id, const char *name,
struct regulator_consumer_supply *supplies, int num_supplies, int uv);
#else
static inline struct platform_device *regulator_register_always_on(int id, const char *name,
struct regulator_consumer_supply *supplies, int num_supplies, int uv)
{
return NULL;
}
#endif
#define regulator_register_fixed(id, s, ns) regulator_register_always_on(id, \
"fixed-dummy", s, ns, 0)
#endif
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