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76 lines
2.9 KiB
76 lines
2.9 KiB
/* |
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* max8973-regulator.h -- MAXIM 8973 regulator |
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* |
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* Interface for regulator driver for MAXIM 8973 DC-DC step-down |
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* switching regulator. |
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* |
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* Copyright (C) 2012 NVIDIA Corporation |
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* Author: Laxman Dewangan <ldewangan@nvidia.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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* more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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*/ |
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#ifndef __LINUX_REGULATOR_MAX8973_H |
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#define __LINUX_REGULATOR_MAX8973_H |
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/* |
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* Control flags for configuration of the device. |
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* Client need to pass this information with ORed |
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*/ |
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#define MAX8973_CONTROL_REMOTE_SENSE_ENABLE 0x00000001 |
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#define MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE 0x00000002 |
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#define MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE 0x00000004 |
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#define MAX8973_CONTROL_BIAS_ENABLE 0x00000008 |
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#define MAX8973_CONTROL_PULL_DOWN_ENABLE 0x00000010 |
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#define MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE 0x00000020 |
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#define MAX8973_CONTROL_CLKADV_TRIP_DISABLED 0x00000000 |
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#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US 0x00010000 |
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#define MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US 0x00020000 |
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#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US_HIST_DIS 0x00030000 |
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#define MAX8973_CONTROL_INDUCTOR_VALUE_NOMINAL 0x00000000 |
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#define MAX8973_CONTROL_INDUCTOR_VALUE_MINUS_30_PER 0x00100000 |
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#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_30_PER 0x00200000 |
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#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_60_PER 0x00300000 |
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/* |
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* struct max8973_regulator_platform_data - max8973 regulator platform data. |
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* |
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* @reg_init_data: The regulator init data. |
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* @control_flags: Control flags which are ORed value of above flags to |
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* configure device. |
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* @enable_ext_control: Enable the voltage enable/disable through external |
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* control signal from EN input pin. If it is false then |
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* voltage output will be enabled/disabled through EN bit of |
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* device register. |
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* @enable_gpio: Enable GPIO. If EN pin is controlled through GPIO from host |
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* then GPIO number can be provided. If no GPIO controlled then |
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* it should be -1. |
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* @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. |
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* @dvs_def_state: Default state of dvs. 1 if it is high else 0. |
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*/ |
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struct max8973_regulator_platform_data { |
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struct regulator_init_data *reg_init_data; |
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unsigned long control_flags; |
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bool enable_ext_control; |
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int enable_gpio; |
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int dvs_gpio; |
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unsigned dvs_def_state:1; |
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}; |
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#endif /* __LINUX_REGULATOR_MAX8973_H */
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