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/*
* This file is part of the coreboot project.
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/smbus.h>
#define ADM1027_REG_CONFIG1 0x40
#define CFG1_STRT 0x01
#define CFG1_LOCK 0x02
#define CFG1_RDY 0x04
#define CFG1_FSPD 0x08
#define CFG1_VXI 0x10
#define CFT1_FSPDIS 0x20
#define CFG1_TODIS 0x40
#define CFG1_VCC 0x80
#define ADM1027_REG_CONFIG2 0x73
#define ADM1027_REG_CONFIG3 0x78
static void adm1027_enable_monitoring(struct device *dev)
{
int result;
result = smbus_read_byte(dev, ADM1027_REG_CONFIG1);
if (!(result & CFG1_RDY)) {
printk(BIOS_DEBUG, "ADM1027: monitoring not ready\n");
return;
}
result = (result | CFG1_STRT);
result = smbus_write_byte(dev, ADM1027_REG_CONFIG1, result);
result = smbus_read_byte(dev, ADM1027_REG_CONFIG1);
if (!(result & CFG1_STRT)) {
printk(BIOS_DEBUG, "ADM1027: monitoring would not enable\n");
return;
}
printk(BIOS_DEBUG, "ADM1027: monitoring enabled\n");
}
static void adm1027_init(struct device *dev)
{
if (dev->enabled && dev->path.type == DEVICE_PATH_I2C) {
if (ops_smbus_bus(get_pbus_smbus(dev))) {
if (dev->bus->dev->path.type == DEVICE_PATH_I2C)
smbus_set_link(dev); // it is under mux
adm1027_enable_monitoring(dev);
}
}
}
static struct device_operations adm1027_operations = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.init = adm1027_init,
};
static void enable_dev(struct device *dev)
{
dev->ops = &adm1027_operations;
}
struct chip_operations drivers_i2c_adm1027_ops = {
CHIP_NAME("adm1027")
.enable_dev = enable_dev,
};
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