/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2008 Corey Osgood <corey.osgood@gmail.com>
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

/* Datasheet: http://www.fintek.com.tw/files/productfiles/F71805F_V025.pdf */

#include <arch/io.h>
#include <device/device.h>
#include <device/pnp.h>
#include <console/console.h>
#include <stdlib.h>
#include <uart8250.h>
#include "chip.h"
#include "f71805f.h"

static void pnp_enter_conf_state(device_t dev)
{
	outb(0x87, dev->path.pnp.port);
}

static void pnp_exit_conf_state(device_t dev)
{
	outb(0xaa, dev->path.pnp.port);
}

static void f71805f_init(device_t dev)
{
	struct superio_fintek_f71805f_config *conf = dev->chip_info;
	struct resource *res0, *res1;

	if (!dev->enabled)
		return;

	switch(dev->path.pnp.device) {
	/* TODO: Might potentially need code for HWM or FDC etc. */
	case F71805F_SP1:
		res0 = find_resource(dev, PNP_IDX_IO0);
		init_uart8250(res0->base, &conf->com1);
		break;
	case F71805F_SP2:
		res1 = find_resource(dev, PNP_IDX_IO0);
		init_uart8250(res0->base, &conf->com2);
		break;
	}
}

static void f71805f_pnp_set_resources(device_t dev)
{
	pnp_enter_conf_state(dev);
	pnp_set_resources(dev);
	pnp_exit_conf_state(dev);
}

static void f71805f_pnp_enable_resources(device_t dev)
{
	pnp_enter_conf_state(dev);
	pnp_enable_resources(dev);
	pnp_exit_conf_state(dev);
}

static void f71805f_pnp_enable(device_t dev)
{
	pnp_enter_conf_state(dev);
	pnp_set_logical_device(dev);
	(dev->enabled) ? pnp_set_enable(dev, 1) : pnp_set_enable(dev, 0);
	pnp_exit_conf_state(dev);
}

static struct device_operations ops = {
	.read_resources   = pnp_read_resources,
	.set_resources    = f71805f_pnp_set_resources,
	.enable_resources = f71805f_pnp_enable_resources,
	.enable           = f71805f_pnp_enable,
	.init             = f71805f_init,
};

static struct pnp_info pnp_dev_info[] = {
	/* TODO: Some of the 0x7f8 etc. values may not be correct. */
	{ &ops, F71805F_FDC,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
	{ &ops, F71805F_SP1,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
	{ &ops, F71805F_SP2,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
	{ &ops, F71805F_PP,   PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
	{ &ops, F71805F_HWM,  PNP_IO0 | PNP_IRQ0, { 0xff8, 0}, },
	{ &ops, F71805F_GPIO, PNP_IRQ0, },
	{ &ops, F71805F_PME, },
};

static void enable_dev(device_t dev)
{
	pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}

struct chip_operations superio_fintek_f71805f_ops = {
	CHIP_NAME("Fintek F71805F Super I/O")
	.enable_dev = enable_dev
};