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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2000 AG Electronics Ltd.
* Copyright (C) 2003-2004 Linux Networx
* Copyright (C) 2004 Tyan
* Copyright (C) 2005 Digital Design Corporation
*
* 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
*/
/* RAM driver for SMSC LPC47B272 Super I/O chip. */
#include <arch/io.h>
#include <device/device.h>
#include <device/pnp.h>
#include <console/console.h>
#include <device/smbus.h>
#include <string.h>
#include <uart8250.h>
#include <pc80/keyboard.h>
#include <stdlib.h>
#include "chip.h"
#include "lpc47b272.h"
/* Forward declarations */
static void enable_dev(device_t dev);
static void lpc47b272_pnp_set_resources(device_t dev);
static void lpc47b272_pnp_enable_resources(device_t dev);
static void lpc47b272_pnp_enable(device_t dev);
static void lpc47b272_init(device_t dev);
static void pnp_enter_conf_state(device_t dev);
static void pnp_exit_conf_state(device_t dev);
// static void dump_pnp_device(device_t dev);
struct chip_operations superio_smsc_lpc47b272_ops = {
CHIP_NAME("SMSC LPC47B272 Super I/O")
.enable_dev = enable_dev
};
static struct device_operations ops = {
.read_resources = pnp_read_resources,
.set_resources = lpc47b272_pnp_set_resources,
.enable_resources = lpc47b272_pnp_enable_resources,
.enable = lpc47b272_pnp_enable,
.init = lpc47b272_init,
};
static struct pnp_info pnp_dev_info[] = {
{ &ops, LPC47B272_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
{ &ops, LPC47B272_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
{ &ops, LPC47B272_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
{ &ops, LPC47B272_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
{ &ops, LPC47B272_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, {0x07ff, 0}, {0x07ff, 4}, },
{ &ops, LPC47B272_RT, PNP_IO0, {0x0780, 0}, },
};
/**
* Create device structures and allocate resources to devices specified in the
* pnp_dev_info array (above).
*
* @param dev Pointer to structure describing a Super I/O device.
*/
static void enable_dev(device_t dev)
{
pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info),
pnp_dev_info);
}
/**
* Configure the specified Super I/O device with the resources (I/O space,
* etc.) that have been allocated for it.
*
* @param dev Pointer to structure describing a Super I/O device.
*/
static void lpc47b272_pnp_set_resources(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_set_resources(dev);
pnp_exit_conf_state(dev);
}
static void lpc47b272_pnp_enable_resources(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_enable_resources(dev);
pnp_exit_conf_state(dev);
}
static void lpc47b272_pnp_enable(device_t dev)
{
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, !!dev->enabled);
pnp_exit_conf_state(dev);
}
/**
* Initialize the specified Super I/O device.
*
* Devices other than COM ports and the keyboard controller are ignored.
* For COM ports, we configure the baud rate.
*
* @param dev Pointer to structure describing a Super I/O device.
*/
static void lpc47b272_init(device_t dev)
{
struct superio_smsc_lpc47b272_config *conf = dev->chip_info;
if (!dev->enabled)
return;
switch(dev->path.pnp.device) {
case LPC47B272_KBC:
pc_keyboard_init(&conf->keyboard);
break;
}
}
static void pnp_enter_conf_state(device_t dev)
{
outb(0x55, dev->path.pnp.port);
}
static void pnp_exit_conf_state(device_t dev)
{
outb(0xaa, dev->path.pnp.port);
}
#if 0
/**
* Print the values of all of the LPC47B272's configuration registers.
*
* NOTE: The LPC47B272 must be in config mode when this function is called.
*
* @param dev Pointer to structure describing a Super I/O device.
*/
static void dump_pnp_device(device_t dev)
{
int i;
print_debug("\n");
for (i = 0; i <= LPC47B272_MAX_CONFIG_REGISTER; i++) {
u8 register_value;
if ((i & 0x0f) == 0) {
print_debug_hex8(i);
print_debug_char(':');
}
/*
* Skip over 'register' that would cause exit from
* configuration mode.
*/
if (i == 0xaa)
register_value = 0xaa;
else
register_value = pnp_read_config(dev, i);
print_debug_char(' ');
print_debug_hex8(register_value);
if ((i & 0x0f) == 0x0f)
print_debug("\n");
}
print_debug("\n");
}
#endif
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