blob: 271d4ef613dd72b58e350e6df364673a5b193ff4 [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
*
* 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 <arch/io.h>
#include <device/device.h>
#include <superio/conf_mode.h>
/* Common enter/exit implementations */
void pnp_enter_conf_mode_55(struct device *dev)
{
outb(0x55, dev->path.pnp.port);
}
void pnp_enter_conf_mode_8787(struct device *dev)
{
outb(0x87, dev->path.pnp.port);
outb(0x87, dev->path.pnp.port);
}
void pnp_exit_conf_mode_aa(struct device *dev)
{
outb(0xaa, dev->path.pnp.port);
}
void pnp_enter_conf_mode_870155aa(struct device *dev)
{
outb(0x87, dev->path.pnp.port);
outb(0x01, dev->path.pnp.port);
outb(0x55, dev->path.pnp.port);
if (dev->path.pnp.port == 0x4e)
outb(0xaa, dev->path.pnp.port);
else
outb(0x55, dev->path.pnp.port);
}
void pnp_exit_conf_mode_0202(struct device *dev)
{
outb(0x02, dev->path.pnp.port);
outb(0x02, dev->path.pnp.port + 1);
}
const struct pnp_mode_ops pnp_conf_mode_55_aa = {
.enter_conf_mode = pnp_enter_conf_mode_55,
.exit_conf_mode = pnp_exit_conf_mode_aa,
};
const struct pnp_mode_ops pnp_conf_mode_8787_aa = {
.enter_conf_mode = pnp_enter_conf_mode_8787,
.exit_conf_mode = pnp_exit_conf_mode_aa,
};
const struct pnp_mode_ops pnp_conf_mode_870155_aa = {
.enter_conf_mode = pnp_enter_conf_mode_870155aa,
.exit_conf_mode = pnp_exit_conf_mode_0202,
};