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
20 struct 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 */
48 struct 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
60 struct regulator_consumer_supply;
61
62 #if IS_ENABLED(CONFIG_REGULATOR)
63 struct platform_device *regulator_register_always_on(int id, const char *name,
64 struct regulator_consumer_supply *supplies, int num_supplies, int uv);
65 #else
regulator_register_always_on(int id,const char * name,struct regulator_consumer_supply * supplies,int num_supplies,int uv)66 static 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