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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Arastra, Inc.
*
* 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.
*/
#include <arch/io.h>
#include <device/pnp.h>
#include "i8900.h"
static void pnp_enter_ext_func_mode(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0x80, port);
outb(0x86, port);
}
static void pnp_exit_ext_func_mode(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(0x68, port);
outb(0x08, port);
}
/* Enable device interrupts, set UART_CLK predivide. */
void i8900_configure_uart_clk(pnp_devfn_t dev, u8 predivide)
{
pnp_enter_ext_func_mode(dev);
pnp_write_config(dev, I8900_SIW_CONFIGURATION,
(predivide << 2) | I8900_ENABLE_SIRQ);
pnp_exit_ext_func_mode(dev);
}
void i8900_enable_serial(pnp_devfn_t dev, u16 iobase)
{
pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
pnp_exit_ext_func_mode(dev);
}
void i8900_enable_wdt(pnp_devfn_t dev, u16 iobase)
{
/* Enable WDT */
pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
pnp_set_enable(dev, 1);
pnp_exit_ext_func_mode(dev);
}
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