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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
*
* 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.
*/
#include <device/device.h>
#include <device/pnp.h>
#include <pc80/keyboard.h>
#include <arch/io.h>
#include <delay.h>
#include <stdlib.h>
#include <superio/conf_mode.h>
#include "chip.h" /* FIXME */
#include "it8772f.h"
static inline u8 it8772f_envc_read(struct resource *res, u8 addr)
{
outb(addr, res->base + 5);
return inb(res->base + 6);
}
static inline void it8772f_envc_write(struct resource *res, u8 addr, u8 value)
{
outb(addr, res->base + 5);
outb(value, res->base + 6);
}
static void it8772f_extemp_force_idle_status(struct resource *res)
{
u8 reg;
int retries = 10;
/* Wait up to 10ms for non-busy state. */
while (retries > 0) {
reg = it8772f_envc_read(res, IT8772F_EXTEMP_STATUS);
if ((reg & IT8772F_EXTEMP_STATUS_HOST_BUSY) == 0x0)
break;
retries--;
mdelay(1);
}
if (retries == 0 && (reg & IT8772F_EXTEMP_STATUS_HOST_BUSY) == 0x1) {
/*
* SIO is busy due to unfinished peci transaction.
* Re-configure Register 0x8E to terminate processes.
*/
it8772f_envc_write(res, IT8772F_EXTEMP_CONTROL,
IT8772F_EXTEMP_CONTROL_AUTO_4HZ |
IT8772F_EXTEMP_CONTROL_AUTO_START);
}
}
/*
* Setup External Temperature to read via PECI into TMPINx register
*/
static void it8772f_enable_peci(struct resource *res, int tmpin)
{
if (tmpin < 1 || tmpin > 3)
return;
/* Enable PECI interface */
it8772f_envc_write(res, IT8772F_INTERFACE_SELECT,
IT8772F_INTERFACE_SEL_PECI |
IT8772F_INTERFACE_SPEED_TOLERANCE);
/* Setup External Temperature using PECI GetTemp */
it8772f_envc_write(res, IT8772F_EXTEMP_ADDRESS,
PECI_CLIENT_ADDRESS);
it8772f_envc_write(res, IT8772F_EXTEMP_COMMAND,
PECI_GETTEMP_COMMAND);
it8772f_envc_write(res, IT8772F_EXTEMP_WRITE_LENGTH,
PECI_GETTEMP_WRITE_LENGTH);
it8772f_envc_write(res, IT8772F_EXTEMP_READ_LENGTH,
PECI_GETTEMP_READ_LENGTH);
it8772f_envc_write(res, IT8772F_EXTEMP_CONTROL,
IT8772F_EXTEMP_CONTROL_AUTO_4HZ |
IT8772F_EXTEMP_CONTROL_AUTO_START);
/* External Temperature reported in TMPINx register */
it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE,
(tmpin & 3) << 6);
}
/*
* Setup a FAN PWM interface for software control
*/
static void it8772f_enable_fan(struct resource *res, int fan)
{
u8 reg;
if (fan < 1 || fan > 3)
return;
/* Enable 6MHz (23.43kHz PWM) active high output */
reg = it8772f_envc_read(res, IT8772F_FAN_CTL_MODE);
reg |= IT8772F_FAN_CTL_ON(fan) |
IT8772F_FAN_PWM_CLOCK_6MHZ |
IT8772F_FAN_CTL_POLARITY_HIGH;
it8772f_envc_write(res, IT8772F_FAN_CTL_MODE, reg);
/* Enable output in smart mode */
reg = it8772f_envc_read(res, IT8772F_FAN_MAIN_CTL);
reg |= IT8772F_FAN_MAIN_CTL_TAC_SMART(fan);
reg |= IT8772F_FAN_MAIN_CTL_TAC_EN(fan);
it8772f_envc_write(res, IT8772F_FAN_MAIN_CTL, reg);
switch (fan) {
case 2:
/* Enable software operation */
it8772f_envc_write(res, IT8772F_FAN_CTL2_PWM_MODE,
IT8772F_FAN_CTL_PWM_MODE_SOFTWARE);
/* Disable Smoothing */
it8772f_envc_write(res, IT8772F_FAN_CTL2_AUTO_MODE,
IT8772F_FAN_CTL_AUTO_SMOOTHING_DIS);
/* Set a default medium fan speed */
it8772f_envc_write(res, IT8772F_FAN_CTL2_PWM_START, 0x80);
break;
case 3:
/* Enable software operation */
it8772f_envc_write(res, IT8772F_FAN_CTL3_PWM_MODE,
IT8772F_FAN_CTL_PWM_MODE_SOFTWARE);
/* Disable Smoothing */
it8772f_envc_write(res, IT8772F_FAN_CTL3_AUTO_MODE,
IT8772F_FAN_CTL_AUTO_SMOOTHING_DIS);
/* Set a default medium fan speed */
it8772f_envc_write(res, IT8772F_FAN_CTL3_PWM_START, 0x80);
break;
}
}
static void it8772f_init(struct device *dev)
{
struct superio_ite_it8772f_config *conf = dev->chip_info;
struct resource *res;
if (!dev->enabled)
return;
switch (dev->path.pnp.device) {
case IT8772F_EC:
res = find_resource(dev, PNP_IDX_IO0);
if (!res)
break;
/* Enable PECI if configured */
it8772f_enable_peci(res, conf->peci_tmpin);
/* Enable FANx if configured */
if (conf->fan1_enable)
it8772f_enable_fan(res, 1);
if (conf->fan2_enable)
it8772f_enable_fan(res, 2);
if (conf->fan3_enable)
it8772f_enable_fan(res, 3);
/*
* System may get wrong temperature data when SIO is in
* busy state. Therefore, check the status and terminate
* processes if needed.
*/
it8772f_extemp_force_idle_status(res);
break;
case IT8772F_GPIO:
/* Set GPIO output levels */
res = find_resource(dev, PNP_IDX_IO1);
if (res) {
if (conf->gpio_set1)
outb(conf->gpio_set1, res->base + 0);
if (conf->gpio_set2)
outb(conf->gpio_set2, res->base + 1);
if (conf->gpio_set3)
outb(conf->gpio_set3, res->base + 2);
if (conf->gpio_set4)
outb(conf->gpio_set4, res->base + 3);
if (conf->gpio_set5)
outb(conf->gpio_set5, res->base + 4);
if (conf->gpio_set6)
outb(conf->gpio_set6, res->base + 5);
}
break;
case IT8772F_KBCK:
if (!conf->skip_keyboard) {
set_kbc_ps2_mode();
pc_keyboard_init();
}
break;
case IT8772F_KBCM:
break;
case IT8772F_IR:
break;
}
}
static struct device_operations ops = {
.read_resources = pnp_read_resources,
.set_resources = pnp_set_resources,
.enable_resources = pnp_enable_resources,
.enable = pnp_alt_enable,
.init = it8772f_init,
.ops_pnp_mode = &pnp_conf_mode_870155_aa,
};
static struct pnp_info pnp_dev_info[] = {
/* Floppy Disk Controller */
{ &ops, IT8772F_FDC, PNP_IO0 | PNP_IRQ0, {0x0ff8, 0}, },
/* Serial Port 1 */
{ &ops, IT8772F_SP1, PNP_IO0 | PNP_IRQ0, {0x0ff8, 0}, },
/* Environmental Controller */
{ &ops, IT8772F_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 |
PNP_MSC4 | PNP_MSC10,
{0x0ff8, 0}, {0x0ffc, 4}, },
/* KBC Keyboard */
{ &ops, IT8772F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0,
{0x0fff, 0}, {0x0fff, 4}, },
/* KBC Mouse */
{ &ops, IT8772F_KBCM, PNP_IRQ0, },
/* 27 GPIOs */
{ &ops, IT8772F_GPIO, PNP_IO0 | PNP_IO1,
{0x0fff, 0}, {0x0ff8, 0}, },
/* Infrared */
{ &ops, IT8772F_IR, PNP_IO0 | PNP_IRQ0, {0x0ff8, 0}, },
};
static void enable_dev(struct device *dev)
{
pnp_enable_devices(dev, &pnp_ops,
ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}
struct chip_operations superio_ite_it8772f_ops = {
CHIP_NAME("ITE IT8772F Super I/O")
.enable_dev = enable_dev,
};
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