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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/io.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pnp.h>
#include "chip.h"
#include "it8728f_internal.h"
/*
* FAN controller configuration register index's
*/
#define HWM_MAIN_CTL_REG 0x13 /* default 0x07 */
#define HWM_CTL_REG 0x14 /* default 0x40 */
#define HWM_FAN1_CTL_PWM 0x15 /* default 0x00 */
#define HWM_FAN2_CTL_PWM 0x16 /* default 0x00 */
#define HWM_FAN3_CTL_PWM 0x17 /* default 0x00 */
#define HWM_ADC_TEMP_CHAN_EN_REG 0x51 /* default 0x00 */
static void pnp_write_index(u16 port, u8 reg, u8 value)
{
outb(reg, port);
outb(value, port + 1);
}
void it8728f_hwm_ec_init(struct device *dev)
{
struct superio_ite_it8728f_config *conf = dev->chip_info;
struct resource *res = find_resource(dev, PNP_IDX_IO0);
if (!res) {
printk(BIOS_WARNING, "Super I/O HWM: No HWM resource found.\n");
return;
}
/* I/O port for HWM is at base + 5 */
u16 port = res->base + 5;
printk(BIOS_INFO,
"ITE IT8728F Super I/O HWM: Initializing Hardware Monitor..\n");
printk(BIOS_DEBUG,
"ITE IT8728F Super I/O HWM: Base Address at 0x%x\n", port);
pnp_enter_conf_mode(dev);
pnp_set_logical_device(dev);
/* ITE IT8728F HWM (ordered) programming sequence. */
/* configure fan polarity */
pnp_write_index(port, HWM_CTL_REG, conf->hwm_ctl_register);
/* enable fans 1-3 */
pnp_write_index(port, HWM_MAIN_CTL_REG, conf->hwm_main_ctl_register);
/* enable termistor temps for temp1-temp3 */
pnp_write_index(port, HWM_ADC_TEMP_CHAN_EN_REG, conf->hwm_adc_temp_chan_en_reg);
/* configure which fanX uses which tempY */
pnp_write_index(port, HWM_FAN1_CTL_PWM, conf->hwm_fan1_ctl_pwm);
pnp_write_index(port, HWM_FAN2_CTL_PWM, conf->hwm_fan2_ctl_pwm);
pnp_write_index(port, HWM_FAN3_CTL_PWM, conf->hwm_fan3_ctl_pwm);
pnp_exit_conf_mode(dev);
}
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