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