src/superio/ite/it8712f/superio.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
   5  * Copyright (C) 2007 Philipp Degler <pdegler@rumms.uni-mannheim.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20  */
  21
  22 #include <device/device.h>
  23 #include <device/pnp.h>
  24 #include <uart8250.h>
  25 #include <pc80/keyboard.h>
  26 #include <arch/io.h>
  27 #include <stdlib.h>
  28 #include "chip.h"
  29 #include "it8712f.h"
  30
  31 /* Base address 0x2e: 0x87 0x01 0x55 0x55. */
  32 /* Base address 0x4e: 0x87 0x01 0x55 0xaa. */
  33 static void pnp_enter_ext_func_mode(device_t dev)
  34 {
  35         outb(0x87, dev->path.pnp.port);
  36         outb(0x01, dev->path.pnp.port);
  37         outb(0x55, dev->path.pnp.port);
  38
  39         if (dev->path.pnp.port == 0x4e) {
  40                 outb(0xaa, dev->path.pnp.port);
  41         } else {
  42                 outb(0x55, dev->path.pnp.port);
  43         }
  44 }
  45
  46 static void pnp_exit_ext_func_mode(device_t dev)
  47 {
  48         pnp_write_config(dev, 0x02, 0x02);
  49 }
  50
  51 static void it8712f_init(device_t dev)
  52 {
  53         struct superio_ite_it8712f_config *conf;
  54         struct resource *res0, *res1;
  55
  56         if (!dev->enabled) {
  57                 return;
  58         }
  59
  60         conf = dev->chip_info;
  61
  62         switch (dev->path.pnp.device) {
  63         case IT8712F_FDC: /* TODO. */
  64                 break;
  65         case IT8712F_SP1:
  66                 res0 = find_resource(dev, PNP_IDX_IO0);
  67                 init_uart8250(res0->base, &conf->com1);
  68                 break;
  69         case IT8712F_SP2:
  70                 res0 = find_resource(dev, PNP_IDX_IO0);
  71                 init_uart8250(res0->base, &conf->com2);
  72                 break;
  73         case IT8712F_PP: /* TODO. */
  74                 break;
  75         case IT8712F_EC: /* TODO. */
  76                 break;
  77         case IT8712F_KBCK:
  78                 res0 = find_resource(dev, PNP_IDX_IO0);
  79                 res1 = find_resource(dev, PNP_IDX_IO1);
  80                 set_kbc_ps2_mode();
  81                 pc_keyboard_init(&conf->keyboard);
  82                 break;
  83         case IT8712F_KBCM: /* TODO. */
  84                 break;
  85         case IT8712F_MIDI: /* TODO. */
  86                 break;
  87         case IT8712F_GAME: /* TODO. */
  88                 break;
  89         case IT8712F_IR: /* TODO. */
  90                 break;
  91         }
  92 }
  93
  94 static void it8712f_pnp_set_resources(device_t dev)
  95 {
  96         pnp_enter_ext_func_mode(dev);
  97         pnp_set_resources(dev);
  98         pnp_exit_ext_func_mode(dev);
  99 }
 100
 101 static void it8712f_pnp_enable_resources(device_t dev)
 102 {
 103         pnp_enter_ext_func_mode(dev);
 104         pnp_enable_resources(dev);
 105         pnp_exit_ext_func_mode(dev);
 106 }
 107
 108 static void it8712f_pnp_enable(device_t dev)
 109 {
 110         pnp_enter_ext_func_mode(dev);
 111         pnp_set_logical_device(dev);
 112         pnp_set_enable(dev, dev->enabled);
 113         pnp_exit_ext_func_mode(dev);
 114 }
 115
 116 static struct device_operations ops = {
 117         .read_resources         = pnp_read_resources,
 118         .set_resources          = it8712f_pnp_set_resources,
 119         .enable_resources       = it8712f_pnp_enable_resources,
 120         .enable                 = it8712f_pnp_enable,
 121         .init                   = it8712f_init,
 122 };
 123
 124 static struct pnp_info pnp_dev_info[] = {
 125         {&ops, IT8712F_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0xff8, 0},},
 126         {&ops, IT8712F_SP1, PNP_IO0 | PNP_IRQ0, {0xff8, 0},},
 127         {&ops, IT8712F_SP2, PNP_IO0 | PNP_IRQ0, {0xff8, 0},},
 128         {&ops, IT8712F_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0xffc, 0},},
 129         {&ops, IT8712F_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0xff8, 0}, {0xff8, 4},},
 130         {&ops, IT8712F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0xfff, 0}, {0xfff, 4},},
 131         {&ops, IT8712F_KBCM, PNP_IRQ0,},
 132         {&ops, IT8712F_GPIO, PNP_IO0 | PNP_IO1 | PNP_IO2 | PNP_IRQ0, {0xfff, 0}, {0xff8, 0}, {0xff8, 0},},
 133         {&ops, IT8712F_MIDI, PNP_IO0 | PNP_IRQ0, {0xff8, 0},},
 134         {&ops, IT8712F_GAME, PNP_IO0, {0xfff, 0},},
 135         {&ops, IT8712F_IR, PNP_IO0 | PNP_IRQ0, {0xff8, 0},},
 136 };
 137
 138 static void enable_dev(struct device *dev)
 139 {
 140         pnp_enable_devices(dev, &pnp_ops,
 141                 ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
 142 }
 143
 144 struct chip_operations superio_ite_it8712f_ops = {
 145         CHIP_NAME("ITE IT8712F Super I/O")
 146         .enable_dev = enable_dev,
 147 };