88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
|
/*
|
||
|
|
* 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>
|
||
|
|
*
|
||
|
|
* 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_GPIO_H
|
||
|
|
#define __REGULATOR_GPIO_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
|
||
|
|
* @enable_gpio: GPIO to use for enable control
|
||
|
|
* set to -EINVAL if not used
|
||
|
|
* @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
|
||
|
|
* @startup_delay: Start-up time in microseconds
|
||
|
|
* @gpios: Array containing the gpios needed to control
|
||
|
|
* the setting of the regulator
|
||
|
|
* @nr_gpios: Number of gpios
|
||
|
|
* @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;
|
||
|
|
|
||
|
|
int enable_gpio;
|
||
|
|
unsigned enable_high:1;
|
||
|
|
unsigned enabled_at_boot:1;
|
||
|
|
unsigned startup_delay;
|
||
|
|
|
||
|
|
struct gpio *gpios;
|
||
|
|
int nr_gpios;
|
||
|
|
|
||
|
|
struct gpio_regulator_state *states;
|
||
|
|
int nr_states;
|
||
|
|
|
||
|
|
enum regulator_type type;
|
||
|
|
struct regulator_init_data *init_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|