1/*
2 * fixed.h
3 *
4 * Copyright 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * Copyright (c) 2009 Nokia Corporation
9 * Roger Quadros <ext-roger.quadros@nokia.com>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of the
14 * License, or (at your option) any later version.
15 */
16
17#ifndef __REGULATOR_FIXED_H
18#define __REGULATOR_FIXED_H
19
20struct regulator_init_data;
21
22/**
23 * struct fixed_voltage_config - fixed_voltage_config structure
24 * @supply_name:	Name of the regulator supply
25 * @input_supply:	Name of the input regulator supply
26 * @microvolts:		Output voltage of regulator
27 * @gpio:		GPIO to use for enable control
28 * 			set to -EINVAL if not used
29 * @startup_delay:	Start-up time in microseconds
30 * @gpio_is_open_drain: Gpio pin is open drain or normal type.
31 *			If it is open drain type then HIGH will be set
32 *			through PULL-UP with setting gpio as input
33 *			and low will be set as gpio-output with driven
34 *			to low. For non-open-drain case, the gpio will
35 *			will be in output and drive to low/high accordingly.
36 * @enable_high:	Polarity of enable GPIO
37 *			1 = Active high, 0 = Active low
38 * @enabled_at_boot:	Whether regulator has been enabled at
39 * 			boot or not. 1 = Yes, 0 = No
40 * 			This is used to keep the regulator at
41 * 			the default state
42 * @init_data:		regulator_init_data
43 *
44 * This structure contains fixed voltage regulator configuration
45 * information that must be passed by platform code to the fixed
46 * voltage regulator driver.
47 */
48struct fixed_voltage_config {
49	const char *supply_name;
50	const char *input_supply;
51	int microvolts;
52	int gpio;
53	unsigned startup_delay;
54	unsigned gpio_is_open_drain:1;
55	unsigned enable_high:1;
56	unsigned enabled_at_boot:1;
57	struct regulator_init_data *init_data;
58};
59
60struct regulator_consumer_supply;
61
62#if IS_ENABLED(CONFIG_REGULATOR)
63struct platform_device *regulator_register_always_on(int id, const char *name,
64		struct regulator_consumer_supply *supplies, int num_supplies, int uv);
65#else
66static inline struct platform_device *regulator_register_always_on(int id, const char *name,
67		struct regulator_consumer_supply *supplies, int num_supplies, int uv)
68{
69	return NULL;
70}
71#endif
72
73#define regulator_register_fixed(id, s, ns) regulator_register_always_on(id, \
74						"fixed-dummy", s, ns, 0)
75
76#endif
77