| /* |
| * fan53555.h - Fairchild Regulator FAN53555 Driver |
| * |
| * Copyright (C) 2012 Marvell Technology Ltd. |
| * Yunfan Zhang <yfzhang@marvell.com> |
| * |
| * This package is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| |
| #ifndef __FAN53555_H__ |
| |
| /* VSEL ID */ |
| enum { |
| FAN53555_VSEL_ID_0 = 0, |
| FAN53555_VSEL_ID_1, |
| }; |
| |
| /* Transition slew rate limiting from a low to high voltage. |
| * The slew rate values listed in this table are based on |
| * 10 mV voltage scaling step. The actual slew rate has a |
| * relationship between the slew rate based on 10 mV as its |
| * voltage scaling step size and the actual voltage step size. |
| * The formula for calculating the actual slew rate is: |
| * actual_slew_rate = 10mv_based_slew_rate * scaling_step_size_mv / 10mV. |
| * ----------------------- |
| * Bin |Slew Rate(mV/uS) |
| * ------|---------------- |
| * 000 | 64.00 |
| * ------|---------------- |
| * 001 | 32.00 |
| * ------|---------------- |
| * 010 | 16.00 |
| * ------|---------------- |
| * 011 | 8.00 |
| * ------|---------------- |
| * 100 | 4.00 |
| * ------|---------------- |
| * 101 | 2.00 |
| * ------|---------------- |
| * 110 | 1.00 |
| * ------|---------------- |
| * 111 | 0.50 |
| * ----------------------- |
| */ |
| enum { |
| FAN53555_SLEW_RATE_64MV = 0, |
| FAN53555_SLEW_RATE_32MV, |
| FAN53555_SLEW_RATE_16MV, |
| FAN53555_SLEW_RATE_8MV, |
| FAN53555_SLEW_RATE_4MV, |
| FAN53555_SLEW_RATE_2MV, |
| FAN53555_SLEW_RATE_1MV, |
| FAN53555_SLEW_RATE_0_5MV, |
| }; |
| |
| struct fan53555_platform_data { |
| struct regulator_init_data *regulator; |
| unsigned int slew_rate; |
| /* Sleep VSEL ID */ |
| unsigned int sleep_vsel_id; |
| }; |
| |
| #ifdef CONFIG_REGULATOR_FAN53555 |
| int __init fan53555_regulator_init(void); |
| #else |
| static inline int __init fan53555_regulator_init(void) { return 0; } |
| #endif |
| |
| #endif /* __FAN53555_H__ */ |
