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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Advanced Micro Devices, Inc.
*
* 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; version 2 of the License.
*
* 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 <stdint.h>
#include <arch/cpu.h>
#include <console/console.h>
#include <device/device.h>
#include "w83793.h"
#include <device/smbus.h>
#include "chip.h"
static int w83793_fan_limit(struct device *dev, int fan, uint16_t limit)
{
return smbus_write_byte(dev, 0x90 + fan * 2, limit >> 8) ||
smbus_write_byte(dev, 0x91 + fan * 2, limit & 0xff);
}
static int w83793_bank(struct device *dev, int bank)
{
return smbus_write_byte(dev, 0, bank);
}
static int w83793_td_level(struct device *dev, int fan, const char *level)
{
fan *= 0x10;
smbus_write_byte(dev, 0x30 + fan, level[0]);
smbus_write_byte(dev, 0x31 + fan, level[1]);
smbus_write_byte(dev, 0x32 + fan, level[2]);
smbus_write_byte(dev, 0x33 + fan, level[3]);
smbus_write_byte(dev, 0x34 + fan, level[4]);
smbus_write_byte(dev, 0x35 + fan, level[5]);
smbus_write_byte(dev, 0x36 + fan, level[6]);
return 0;
}
static int w83793_tr_level(struct device *dev, int fan, const char *level)
{
fan *= 0x10;
smbus_write_byte(dev, 0x70 + fan, level[0]);
smbus_write_byte(dev, 0x71 + fan, level[1]);
smbus_write_byte(dev, 0x72 + fan, level[2]);
smbus_write_byte(dev, 0x73 + fan, level[3]);
smbus_write_byte(dev, 0x74 + fan, level[4]);
smbus_write_byte(dev, 0x75 + fan, level[5]);
smbus_write_byte(dev, 0x76 + fan, level[6]);
return 0;
}
static int w83793_td_fan_level(struct device *dev, int fan, const char *level)
{
fan *= 0x10;
smbus_write_byte(dev, 0x38 + fan, level[0]);
smbus_write_byte(dev, 0x39 + fan, level[1]);
smbus_write_byte(dev, 0x3a + fan, level[2]);
smbus_write_byte(dev, 0x3b + fan, level[3]);
smbus_write_byte(dev, 0x3c + fan, level[4]);
smbus_write_byte(dev, 0x3d + fan, level[5]);
smbus_write_byte(dev, 0x3e + fan, level[6]);
return 0;
}
static int w83793_tr_fan_level(struct device *dev, int fan, const char *level)
{
fan *= 0x10;
smbus_write_byte(dev, 0x78 + fan, level[0]);
smbus_write_byte(dev, 0x79 + fan, level[1]);
smbus_write_byte(dev, 0x7a + fan, level[2]);
smbus_write_byte(dev, 0x7b + fan, level[3]);
smbus_write_byte(dev, 0x7c + fan, level[4]);
smbus_write_byte(dev, 0x7d + fan, level[5]);
smbus_write_byte(dev, 0x7e + fan, level[6]);
return 0;
}
static void w83793_init(struct device *dev)
{
struct drivers_i2c_w83793_config *config = dev->chip_info;
uint16_t id;
int i;
if (w83793_bank(dev, 0))
printk(BIOS_ERR, "%s: failed\n", __func__);
if (!config)
return;
id = smbus_read_byte(dev, 0x0d);
w83793_bank(dev, 0x80);
id |= smbus_read_byte(dev, 0x0d) << 8;
printk(BIOS_ERR, "ID: %04x\n", id);
/* reset configuration */
smbus_write_byte(dev, 0x40, 0x80);
smbus_write_byte(dev, 0x51, 0x06);
/* Multi function control */
smbus_write_byte(dev, 0x58, config->mfc);
/* FANIN_Ctrl */
smbus_write_byte(dev, 0x5c, config->fanin);
/* Temperature reported by PECI */
smbus_write_byte(dev, 0x5e, 0xff);
/* TR monitor enable */
smbus_write_byte(dev, 0x5f, config->tr_enable);
/* PECI Agent configuration */
smbus_write_byte(dev, 0xd0, config->peci_agent_conf);
/* TCase */
smbus_write_byte(dev, 0xd1, config->tcase0);
smbus_write_byte(dev, 0xd2, config->tcase1);
smbus_write_byte(dev, 0xd3, config->tcase2);
smbus_write_byte(dev, 0xd4, config->tcase3);
/* PECI Reportstyle */
smbus_write_byte(dev, 0xd5, 0x00);
for (i = 0; i < 9; i++)
w83793_fan_limit(dev, i, 0x768);
/* Fan output style control */
smbus_write_byte(dev, 0xb0, 0x00);
smbus_write_byte(dev, 0xb1, 0x00);
/* FAN Uptime */
smbus_write_byte(dev, 0xc3, 0x02);
/* FAN downtime */
smbus_write_byte(dev, 0xc4, 0x03);
/* ALL FAN critical temperature */
smbus_write_byte(dev, 0xc5, config->critical_temperature);
/* Temperature offset */
smbus_write_byte(dev, 0xa8, 0xf9);
smbus_write_byte(dev, 0xa9, 0xf9);
smbus_write_byte(dev, 0xaa, 0xf9);
smbus_write_byte(dev, 0xab, 0xf9);
/* BANK 2 */
smbus_write_byte(dev, 0x00, 0x02);
/* TD FAN select */
smbus_write_byte(dev, 0x01, config->td1_fan_select);
smbus_write_byte(dev, 0x02, config->td2_fan_select);
smbus_write_byte(dev, 0x03, config->td3_fan_select);
smbus_write_byte(dev, 0x04, config->td4_fan_select);
smbus_write_byte(dev, 0x05, config->tr1_fan_select);
smbus_write_byte(dev, 0x06, config->tr2_fan_select);
/* FAN control mode */
smbus_write_byte(dev, 0x07, 0x00);
/* hysteresis tolerance */
smbus_write_byte(dev, 0x08, 0xaa);
smbus_write_byte(dev, 0x09, 0xaa);
/* FanNonStop */
smbus_write_byte(dev, 0x18, 0x1d);
smbus_write_byte(dev, 0x19, 0x04);
smbus_write_byte(dev, 0x1a, 0x04);
smbus_write_byte(dev, 0x1b, 0x04);
smbus_write_byte(dev, 0x1c, 0x04);
smbus_write_byte(dev, 0x1d, 0x04);
smbus_write_byte(dev, 0x1e, 0x04);
smbus_write_byte(dev, 0x1f, 0x04);
/* FanStart */
smbus_write_byte(dev, 0x20, 0x08);
smbus_write_byte(dev, 0x21, 0x08);
smbus_write_byte(dev, 0x22, 0x08);
smbus_write_byte(dev, 0x23, 0x08);
smbus_write_byte(dev, 0x24, 0x08);
smbus_write_byte(dev, 0x25, 0x08);
smbus_write_byte(dev, 0x26, 0x08);
smbus_write_byte(dev, 0x27, 0x08);
for (i = 0; i < 4; i++)
w83793_td_level(dev, i, (const char[]){ 0x32, 0x32, 0x32, 0x32, 0x37, 0x41, 0x4b });
for (i = 0; i < 2; i++)
w83793_tr_level(dev, i, (const char[]){ 0x1e, 0x23, 0x28, 0x2d, 0x32, 0x37, 0x3c });
for (i = 0; i < 4; i++)
w83793_td_fan_level(dev, i, (const char[]){ 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x26 });
for (i = 0; i < 2; i++)
w83793_tr_fan_level(dev, i, (const char[]){ 0x08, 0x0c, 0x10, 0x18, 0x20, 0x30, 0x38 });
smbus_write_byte(dev, 0x00, 0x00);
/* Fan output style */
smbus_write_byte(dev, 0xb4, 0x00);
smbus_write_byte(dev, 0xb5, 0x00);
/* start monitoring operation */
smbus_write_byte(dev, 0x40, 0x09);
}
static void w83793_noop(struct device *dummy)
{
}
static struct device_operations w83793_operations = {
.read_resources = w83793_noop,
.set_resources = w83793_noop,
.enable_resources = w83793_noop,
.init = w83793_init,
};
static void enable_dev(struct device *dev)
{
dev->ops = &w83793_operations;
}
struct chip_operations drivers_i2c_w83793_ops = {
CHIP_NAME("Nuvoton W83793 Hardware Monitor")
.enable_dev = enable_dev,
};
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