// SPDX-License-Identifier: GPL-2.0+ | |
/* | |
* (C) Copyright 2015 | |
* Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc | |
*/ | |
#ifdef CONFIG_GDSYS_LEGACY_DRIVERS | |
#include <common.h> | |
#include <i2c.h> | |
enum { | |
FAN_CONFIG = 0x03, | |
FAN_TACHLIM_LSB = 0x48, | |
FAN_TACHLIM_MSB = 0x49, | |
FAN_PWM_FREQ = 0x4D, | |
}; | |
void init_fan_controller(u8 addr) | |
{ | |
int val; | |
/* set PWM Frequency to 2.5% resolution */ | |
i2c_reg_write(addr, FAN_PWM_FREQ, 20); | |
/* set Tachometer Limit */ | |
i2c_reg_write(addr, FAN_TACHLIM_LSB, 0x10); | |
i2c_reg_write(addr, FAN_TACHLIM_MSB, 0x0a); | |
/* enable Tach input */ | |
val = i2c_reg_read(addr, FAN_CONFIG) | 0x04; | |
i2c_reg_write(addr, FAN_CONFIG, val); | |
} | |
#endif /* CONFIG_GDSYS_LEGACY_DRIVERS */ |