| Laxman Dewangan | 5928f53 | 2012-11-19 06:58:29 +0530 | [diff] [blame] | 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 | * @enable_ext_control: Enable the voltage enable/disable through external |
| 58 | * control signal from EN input pin. If it is false then |
| 59 | * voltage output will be enabled/disabled through EN bit of |
| 60 | * device register. |
| 61 | * @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. |
| 62 | * @dvs_def_state: Default state of dvs. 1 if it is high else 0. |
| 63 | */ |
| 64 | struct max8973_regulator_platform_data { |
| 65 | struct regulator_init_data *reg_init_data; |
| 66 | unsigned long control_flags; |
| 67 | bool enable_ext_control; |
| 68 | int dvs_gpio; |
| 69 | unsigned dvs_def_state:1; |
| 70 | }; |
| 71 | |
| 72 | #endif /* __LINUX_REGULATOR_MAX8973_H */ |