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Linux kernel mirror (for testing)
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linux
1/*
2 * gpio-regulator.h
3 *
4 * Copyright 2011 Heiko Stuebner <heiko@sntech.de>
5 *
6 * based on fixed.h
7 *
8 * Copyright 2008 Wolfson Microelectronics PLC.
9 *
10 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 *
12 * Copyright (c) 2009 Nokia Corporation
13 * Roger Quadros <ext-roger.quadros@nokia.com>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of the
18 * License, or (at your option) any later version.
19 */
20
21#ifndef __REGULATOR_GPIO_H
22#define __REGULATOR_GPIO_H
23
24#include <linux/gpio/consumer.h>
25
26struct regulator_init_data;
27
28enum regulator_type;
29
30/**
31 * struct gpio_regulator_state - state description
32 * @value: microvolts or microamps
33 * @gpios: bitfield of gpio target-states for the value
34 *
35 * This structure describes a supported setting of the regulator
36 * and the necessary gpio-state to achieve it.
37 *
38 * The n-th bit in the bitfield describes the state of the n-th GPIO
39 * from the gpios-array defined in gpio_regulator_config below.
40 */
41struct gpio_regulator_state {
42 int value;
43 int gpios;
44};
45
46/**
47 * struct gpio_regulator_config - config structure
48 * @supply_name: Name of the regulator supply
49 * @enabled_at_boot: Whether regulator has been enabled at
50 * boot or not. 1 = Yes, 0 = No
51 * This is used to keep the regulator at
52 * the default state
53 * @startup_delay: Start-up time in microseconds
54 * @gflags: Array of GPIO configuration flags for initial
55 * states
56 * @ngpios: Number of GPIOs and configurations available
57 * @states: Array of gpio_regulator_state entries describing
58 * the gpio state for specific voltages
59 * @nr_states: Number of states available
60 * @regulator_type: either REGULATOR_CURRENT or REGULATOR_VOLTAGE
61 * @init_data: regulator_init_data
62 *
63 * This structure contains gpio-voltage regulator configuration
64 * information that must be passed by platform code to the
65 * gpio-voltage regulator driver.
66 */
67struct gpio_regulator_config {
68 const char *supply_name;
69
70 unsigned enabled_at_boot:1;
71 unsigned startup_delay;
72
73 enum gpiod_flags *gflags;
74 int ngpios;
75
76 struct gpio_regulator_state *states;
77 int nr_states;
78
79 enum regulator_type type;
80 struct regulator_init_data *init_data;
81};
82
83#endif