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path: root/src/drivers/i2c/lm63/lm63.c
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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 <device/device.h>
#include <device/smbus.h>

static void lm63_init(struct device *dev)
{
	int result;
	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
			result = smbus_read_byte(dev, 0x03);
//                      result &= ~0x04;
			result |= 0x04;
			smbus_write_byte(dev, 0x03, result & 0xff);	// config lm63
		}
	}
}

static struct device_operations lm63_operations = {
	.read_resources = DEVICE_NOOP,
	.set_resources = DEVICE_NOOP,
	.enable_resources = DEVICE_NOOP,
	.init = lm63_init,
};

static void enable_dev(struct device *dev)
{
	dev->ops = &lm63_operations;
}

struct chip_operations drivers_i2c_lm63_ops = {
	CHIP_NAME("National Semiconductor LM63")
	.enable_dev = enable_dev,
};