src/superio/ite/it8716f/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 AMD
   6  * (Written by Yinghai Lu <yinghai.lu@amd.com> for AMD)
   7  * Copyright (C) 2007 Ward Vandewege <ward@gnu.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  22  */
  23
  24 #include <device/device.h>
  25 #include <device/pnp.h>
  26 #include <console/console.h>
  27 #include <uart8250.h>
  28 #include <pc80/keyboard.h>
  29 #include <arch/io.h>
  30 #include <stdlib.h>
  31 #include "chip.h"
  32 #include "it8716f.h"
  33
  34 static void pnp_enter_ext_func_mode(device_t dev)
  35 {
  36         u16 port = dev->path.pnp.port;
  37
  38         outb(0x87, port);
  39         outb(0x01, port);
  40         outb(0x55, port);
  41         outb((port == 0x4e) ? 0xaa : 0x55, port);
  42 }
  43
  44 static void pnp_exit_ext_func_mode(device_t dev)
  45 {
  46         pnp_write_config(dev, 0x02, 0x02);
  47 }
  48
  49 #if !defined(CONFIG_SUPERIO_ITE_IT8716F_OVERRIDE_FANCTL) || !CONFIG_SUPERIO_ITE_IT8716F_OVERRIDE_FANCTL
  50 static void pnp_write_index(u16 port_base, u8 reg, u8 value)
  51 {
  52         outb(reg, port_base);
  53         outb(value, port_base + 1);
  54 }
  55
  56 static u8 pnp_read_index(u16 port_base, u8 reg)
  57 {
  58         outb(reg, port_base);
  59         return inb(port_base + 1);
  60 }
  61
  62 static void init_ec(u16 base)
  63 {
  64         u8 value;
  65
  66         /* Read out current value of FAN_CTL (0x14). */
  67         value = pnp_read_index(base, 0x14);
  68         printk(BIOS_DEBUG, "FAN_CTL: reg = 0x%04x, read value = 0x%02x\n",
  69                base + 0x14, value);
  70
  71         /* Set FAN_CTL (0x14) polarity to high, activate fans 1, 2 and 3. */
  72         pnp_write_index(base, 0x14, value | 0x87);
  73         printk(BIOS_DEBUG, "FAN_CTL: reg = 0x%04x, writing value = 0x%02x\n",
  74                base + 0x14, value | 0x87);
  75 }
  76 #endif
  77
  78 static void it8716f_init(device_t dev)
  79 {
  80         struct superio_ite_it8716f_config *conf = dev->chip_info;
  81         struct resource *res0;
  82
  83         if (!dev->enabled)
  84                 return;
  85
  86         /* TODO: FDC, PP, KBCM, MIDI, GAME, IR. */
  87         switch (dev->path.pnp.device) {
  88         case IT8716F_SP1:
  89                 res0 = find_resource(dev, PNP_IDX_IO0);
  90                 init_uart8250(res0->base, &conf->com1);
  91                 break;
  92         case IT8716F_SP2:
  93                 res0 = find_resource(dev, PNP_IDX_IO0);
  94                 init_uart8250(res0->base, &conf->com2);
  95                 break;
  96         case IT8716F_EC:
  97                 res0 = find_resource(dev, PNP_IDX_IO0);
  98 #define EC_INDEX_PORT 5
  99                 init_ec(res0->base + EC_INDEX_PORT);
 100                 break;
 101         case IT8716F_KBCK:
 102                 pc_keyboard_init(&conf->keyboard);
 103                 break;
 104         }
 105 }
 106
 107 static void it8716f_pnp_set_resources(device_t dev)
 108 {
 109         pnp_enter_ext_func_mode(dev);
 110         pnp_set_resources(dev);
 111         pnp_exit_ext_func_mode(dev);
 112 }
 113
 114 static void it8716f_pnp_enable_resources(device_t dev)
 115 {
 116         pnp_enter_ext_func_mode(dev);
 117         pnp_enable_resources(dev);
 118         pnp_exit_ext_func_mode(dev);
 119 }
 120
 121 static void it8716f_pnp_enable(device_t dev)
 122 {
 123         pnp_enter_ext_func_mode(dev);
 124         pnp_set_logical_device(dev);
 125         pnp_set_enable(dev, dev->enabled);
 126         pnp_exit_ext_func_mode(dev);
 127 }
 128
 129 static struct device_operations ops = {
 130         .read_resources   = pnp_read_resources,
 131         .set_resources    = it8716f_pnp_set_resources,
 132         .enable_resources = it8716f_pnp_enable_resources,
 133         .enable           = it8716f_pnp_enable,
 134         .init             = it8716f_init,
 135 };
 136
 137 static struct pnp_info pnp_dev_info[] = {
 138         { &ops, IT8716F_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
 139         { &ops, IT8716F_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
 140         { &ops, IT8716F_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
 141         { &ops, IT8716F_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
 142         { &ops, IT8716F_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x07f8, 0}, {0x07f8, 4}, },
 143         { &ops, IT8716F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x07ff, 0}, {0x07ff, 4}, },
 144         { &ops, IT8716F_KBCM, PNP_IRQ0, },
 145         { &ops, IT8716F_GPIO, PNP_IO1 | PNP_IO2, {0, 0}, {0x07f8, 0}, {0x07f8, 0}, },
 146         { &ops, IT8716F_MIDI, PNP_IO0 | PNP_IRQ0, {0x07fe, 4}, },
 147         { &ops, IT8716F_GAME, PNP_IO0, {0x07ff, 0}, },
 148         { &ops, IT8716F_IR, },
 149 };
 150
 151 static void enable_dev(struct device *dev)
 152 {
 153         pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
 154 }
 155
 156 struct chip_operations superio_ite_it8716f_ops = {
 157         CHIP_NAME("ITE IT8716F Super I/O")
 158         .enable_dev = enable_dev,
 159 };