1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * max8973-regulator.h -- MAXIM 8973 regulator 4 * 5 * Interface for regulator driver for MAXIM 8973 DC-DC step-down 6 * switching regulator. 7 * 8 * Copyright (C) 2012 NVIDIA Corporation 9 10 * Author: Laxman Dewangan <ldewangan@nvidia.com> 11 */ 12 13#ifndef __LINUX_REGULATOR_MAX8973_H 14#define __LINUX_REGULATOR_MAX8973_H 15 16/* 17 * Control flags for configuration of the device. 18 * Client need to pass this information with ORed 19 */ 20#define MAX8973_CONTROL_REMOTE_SENSE_ENABLE 0x00000001 21#define MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE 0x00000002 22#define MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE 0x00000004 23#define MAX8973_CONTROL_BIAS_ENABLE 0x00000008 24#define MAX8973_CONTROL_PULL_DOWN_ENABLE 0x00000010 25#define MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE 0x00000020 26 27#define MAX8973_CONTROL_CLKADV_TRIP_DISABLED 0x00000000 28#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US 0x00010000 29#define MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US 0x00020000 30#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US_HIST_DIS 0x00030000 31 32#define MAX8973_CONTROL_INDUCTOR_VALUE_NOMINAL 0x00000000 33#define MAX8973_CONTROL_INDUCTOR_VALUE_MINUS_30_PER 0x00100000 34#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_30_PER 0x00200000 35#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_60_PER 0x00300000 36 37/* 38 * struct max8973_regulator_platform_data - max8973 regulator platform data. 39 * 40 * @reg_init_data: The regulator init data. 41 * @control_flags: Control flags which are ORed value of above flags to 42 * configure device. 43 * @junction_temp_warning: Junction temp in millicelcius on which warning need 44 * to be set. Thermal functionality is only supported on 45 * MAX77621. The threshold warning supported by MAX77621 46 * are 120C and 140C. 47 * @enable_ext_control: Enable the voltage enable/disable through external 48 * control signal from EN input pin. If it is false then 49 * voltage output will be enabled/disabled through EN bit of 50 * device register. 51 * @enable_gpio: Enable GPIO. If EN pin is controlled through GPIO from host 52 * then GPIO number can be provided. If no GPIO controlled then 53 * it should be -1. 54 * @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. 55 * @dvs_def_state: Default state of dvs. 1 if it is high else 0. 56 */ 57struct max8973_regulator_platform_data { 58 struct regulator_init_data *reg_init_data; 59 unsigned long control_flags; 60 unsigned long junction_temp_warning; 61 bool enable_ext_control; 62 int enable_gpio; 63 int dvs_gpio; 64 unsigned dvs_def_state:1; 65}; 66 67#endif /* __LINUX_REGULATOR_MAX8973_H */ 68