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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 secunet Security Networks AG
*
* 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/pnp.h>
#include <pc80/keyboard.h>
#include <ec/acpi/ec.h>
#include <stdlib.h>
#include <delay.h>
#include "chip.h"
static void it8518_init(struct device *dev)
{
const struct ec_roda_it8518_config *const conf = dev->chip_info;
if (!dev->enabled)
return;
printk(BIOS_DEBUG, "Roda IT8518: Initializing keyboard.\n");
pc_keyboard_init(NO_AUX_DEVICE);
if (conf && conf->cpuhot_limit) {
/* The EC may take very long for the first command on a
cold boot (~180ms witnessed). Since we need an incre-
dibly long timeout, we do this EC RAM write manually. */
int timeout = 50000; /* 50,000 * 10us = 500ms */
send_ec_command(0x81);
while (ec_status() & EC_IBF && --timeout)
udelay(10);
send_ec_data(0xb2);
send_ec_data(conf->cpuhot_limit);
}
}
static struct device_operations ops = {
.init = it8518_init,
.read_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
};
static struct pnp_info pnp_dev_info[] = {
{ &ops, 0, 0, 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 ec_roda_it8518_ops = {
CHIP_NAME("Roda IT8518 EC")
.enable_dev = enable_dev
};
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