| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |
| 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 |