src/superio/smsc/kbc1100/superio.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 Advanced Micro Devices, 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; 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
 */

/* RAM driver for the SMSC KBC1100 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 <bitops.h>
#include <uart8250.h>
#include <pc80/keyboard.h>
#include <stdlib.h>
#include "chip.h"
#include "kbc1100.h"

/* Forward declarations */
static void enable_dev(device_t dev);
static void kbc1100_pnp_set_resources(device_t dev);
static void kbc1100_pnp_enable_resources(device_t dev);
static void kbc1100_pnp_enable(device_t dev);
static void kbc1100_init(device_t dev);

static void pnp_enter_conf_state(device_t dev);
static void pnp_exit_conf_state(device_t dev);

struct chip_operations superio_smsc_kbc1100_ops = {
  CHIP_NAME("SMSC KBC1100 Super I/O")
  .enable_dev = enable_dev
};

static struct device_operations ops = {
  .read_resources   = pnp_read_resources,
  .set_resources    = kbc1100_pnp_set_resources,
  .enable_resources = kbc1100_pnp_enable_resources,
  .enable           = kbc1100_pnp_enable,
  .init             = kbc1100_init,
};

static struct pnp_info pnp_dev_info[] = {
  { &ops, KBC1100_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
};

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

static void kbc1100_pnp_set_resources(device_t dev)
{
  pnp_enter_conf_state(dev);
  pnp_set_resources(dev);
  pnp_exit_conf_state(dev);
}

static void kbc1100_pnp_enable_resources(device_t dev)
{
  pnp_enter_conf_state(dev);
  pnp_enable_resources(dev);
  pnp_exit_conf_state(dev);
}

static void kbc1100_pnp_enable(device_t dev)
{
  pnp_enter_conf_state(dev);
  pnp_set_logical_device(dev);

  if(dev->enabled) {
    pnp_set_enable(dev, 1);
  }
  else {
    pnp_set_enable(dev, 0);
  }
  pnp_exit_conf_state(dev);
}

static void kbc1100_init(device_t dev)
{
  struct superio_smsc_kbc1100_config *conf = dev->chip_info;
  struct resource *res0, *res1;

  
   
  if (!dev->enabled) {
    return;
  }

  switch(dev->path.pnp.device) {
  
  case KBC1100_KBC:
    res0 = find_resource(dev, PNP_IDX_IO0);
    res1 = find_resource(dev, PNP_IDX_IO1);
    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);
}