1 /* 2 * max8973-regulator.h -- MAXIM 8973 regulator 3 * 4 * Interface for regulator driver for MAXIM 8973 DC-DC step-down 5 * switching regulator. 6 * 7 * Copyright (C) 2012 NVIDIA Corporation 8 9 * Author: Laxman Dewangan <ldewangan@nvidia.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, but WITHOUT 17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 19 * more details. 20 * 21 * You should have received a copy of the GNU General Public License along 22 * with this program; if not, write to the Free Software Foundation, Inc., 23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 24 * 25 */ 26 27 #ifndef __LINUX_REGULATOR_MAX8973_H 28 #define __LINUX_REGULATOR_MAX8973_H 29 30 /* 31 * Control flags for configuration of the device. 32 * Client need to pass this information with ORed 33 */ 34 #define MAX8973_CONTROL_REMOTE_SENSE_ENABLE 0x00000001 35 #define MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE 0x00000002 36 #define MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE 0x00000004 37 #define MAX8973_CONTROL_BIAS_ENABLE 0x00000008 38 #define MAX8973_CONTROL_PULL_DOWN_ENABLE 0x00000010 39 #define MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE 0x00000020 40 41 #define MAX8973_CONTROL_CLKADV_TRIP_DISABLED 0x00000000 42 #define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US 0x00010000 43 #define MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US 0x00020000 44 #define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US_HIST_DIS 0x00030000 45 46 #define MAX8973_CONTROL_INDUCTOR_VALUE_NOMINAL 0x00000000 47 #define MAX8973_CONTROL_INDUCTOR_VALUE_MINUS_30_PER 0x00100000 48 #define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_30_PER 0x00200000 49 #define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_60_PER 0x00300000 50 51 /* 52 * struct max8973_regulator_platform_data - max8973 regulator platform data. 53 * 54 * @reg_init_data: The regulator init data. 55 * @control_flags: Control flags which are ORed value of above flags to 56 * configure device. 57 * @junction_temp_warning: Junction temp in millicelcius on which warning need 58 * to be set. Thermal functionality is only supported on 59 * MAX77621. The threshold warning supported by MAX77621 60 * are 120C and 140C. 61 * @enable_ext_control: Enable the voltage enable/disable through external 62 * control signal from EN input pin. If it is false then 63 * voltage output will be enabled/disabled through EN bit of 64 * device register. 65 * @enable_gpio: Enable GPIO. If EN pin is controlled through GPIO from host 66 * then GPIO number can be provided. If no GPIO controlled then 67 * it should be -1. 68 * @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. 69 * @dvs_def_state: Default state of dvs. 1 if it is high else 0. 70 */ 71 struct max8973_regulator_platform_data { 72 struct regulator_init_data *reg_init_data; 73 unsigned long control_flags; 74 unsigned long junction_temp_warning; 75 bool enable_ext_control; 76 int enable_gpio; 77 int dvs_gpio; 78 unsigned dvs_def_state:1; 79 }; 80 81 #endif /* __LINUX_REGULATOR_MAX8973_H */ 82