src/superio/smsc/kbc1100/superio.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2011 Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20 /* RAM driver for the SMSC KBC1100 Super I/O chip */
  21
  22 #include <arch/io.h>
  23 #include <device/device.h>
  24 #include <device/pnp.h>
  25 #include <console/console.h>
  26 #include <device/smbus.h>
  27 #include <string.h>
  28 #include <bitops.h>
  29 #include <uart8250.h>
  30 #include <pc80/keyboard.h>
  31 #include <stdlib.h>
  32 #include "chip.h"
  33 #include "kbc1100.h"
  34
  35 /* Forward declarations */
  36 static void enable_dev(device_t dev);
  37 static void kbc1100_pnp_set_resources(device_t dev);
  38 static void kbc1100_pnp_enable_resources(device_t dev);
  39 static void kbc1100_pnp_enable(device_t dev);
  40 static void kbc1100_init(device_t dev);
  41
  42 static void pnp_enter_conf_state(device_t dev);
  43 static void pnp_exit_conf_state(device_t dev);
  44
  45 struct chip_operations superio_smsc_kbc1100_ops = {
  46   CHIP_NAME("SMSC KBC1100 Super I/O")
  47   .enable_dev = enable_dev
  48 };
  49
  50 static struct device_operations ops = {
  51   .read_resources   = pnp_read_resources,
  52   .set_resources    = kbc1100_pnp_set_resources,
  53   .enable_resources = kbc1100_pnp_enable_resources,
  54   .enable           = kbc1100_pnp_enable,
  55   .init             = kbc1100_init,
  56 };
  57
  58 static struct pnp_info pnp_dev_info[] = {
  59   { &ops, KBC1100_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
  60 };
  61
  62 static void enable_dev(device_t dev)
  63 {
  64   pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
  65 }
  66
  67 static void kbc1100_pnp_set_resources(device_t dev)
  68 {
  69   pnp_enter_conf_state(dev);
  70   pnp_set_resources(dev);
  71   pnp_exit_conf_state(dev);
  72 }
  73
  74 static void kbc1100_pnp_enable_resources(device_t dev)
  75 {
  76   pnp_enter_conf_state(dev);
  77   pnp_enable_resources(dev);
  78   pnp_exit_conf_state(dev);
  79 }
  80
  81 static void kbc1100_pnp_enable(device_t dev)
  82 {
  83   pnp_enter_conf_state(dev);
  84   pnp_set_logical_device(dev);
  85
  86   if(dev->enabled) {
  87     pnp_set_enable(dev, 1);
  88   }
  89   else {
  90     pnp_set_enable(dev, 0);
  91   }
  92   pnp_exit_conf_state(dev);
  93 }
  94
  95 static void kbc1100_init(device_t dev)
  96 {
  97   struct superio_smsc_kbc1100_config *conf = dev->chip_info;
  98   struct resource *res0, *res1;
  99
 100
 101
 102   if (!dev->enabled) {
 103     return;
 104   }
 105
 106   switch(dev->path.pnp.device) {
 107
 108   case KBC1100_KBC:
 109     res0 = find_resource(dev, PNP_IDX_IO0);
 110     res1 = find_resource(dev, PNP_IDX_IO1);
 111     pc_keyboard_init(&conf->keyboard);
 112     break;
 113   }
 114 }
 115
 116 static void pnp_enter_conf_state(device_t dev)
 117 {
 118   outb(0x55, dev->path.pnp.port);
 119 }
 120
 121 static void pnp_exit_conf_state(device_t dev)
 122 {
 123   outb(0xaa, dev->path.pnp.port);
 124 }