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 /* Base address 0x2e: 0x87 0x01 0x55 0x55. */
  35 /* Base address 0x4e: 0x87 0x01 0x55 0xaa. */
  36 static void pnp_enter_ext_func_mode(device_t dev)
  37 {
  38         outb(0x87, dev->path.pnp.port);
  39         outb(0x01, dev->path.pnp.port);
  40         outb(0x55, dev->path.pnp.port);
  41
  42         if (dev->path.pnp.port == 0x4e) {
  43                 outb(0xaa, dev->path.pnp.port);
  44         } else {
  45                 outb(0x55, dev->path.pnp.port);
  46         }
  47 }
  48
  49 static void pnp_exit_ext_func_mode(device_t dev)
  50 {
  51         pnp_write_config(dev, 0x02, 0x02);
  52 }
  53
  54 #if !defined(CONFIG_SUPERIO_ITE_IT8716F_OVERRIDE_FANCTL) || !CONFIG_SUPERIO_ITE_IT8716F_OVERRIDE_FANCTL
  55 static void pnp_write_index(uint16_t port_base, uint8_t reg, uint8_t value)
  56 {
  57         outb(reg, port_base);
  58         outb(value, port_base + 1);
  59 }
  60
  61 static uint8_t pnp_read_index(uint16_t port_base, uint8_t reg)
  62 {
  63         outb(reg, port_base);
  64         return inb(port_base + 1);
  65 }
  66
  67 static void init_ec(uint16_t base)
  68 {
  69         uint8_t value;
  70
  71         /* Read out current value of FAN_CTL control register (0x14). */
  72         value = pnp_read_index(base, 0x14);
  73         printk(BIOS_DEBUG, "FAN_CTL: reg = 0x%04x, read value = 0x%02x\n",
  74                      base + 0x14, value);
  75
  76         /* Set FAN_CTL control register (0x14) polarity to high, and
  77            activate fans 1, 2 and 3. */
  78         pnp_write_index(base, 0x14, value | 0x87);
  79         printk(BIOS_DEBUG, "FAN_CTL: reg = 0x%04x, writing value = 0x%02x\n",
  80                      base + 0x14, value | 0x87);
  81 }
  82 #endif
  83
  84 static void it8716f_init(device_t dev)
  85 {
  86         struct superio_ite_it8716f_config *conf;
  87         struct resource *res0, *res1;
  88
  89         if (!dev->enabled) {
  90                 return;
  91         }
  92
  93         conf = dev->chip_info;
  94
  95         /* TODO: FDC, PP, KBCM, MIDI, GAME, IR. */
  96         switch (dev->path.pnp.device) {
  97         case IT8716F_SP1:
  98                 res0 = find_resource(dev, PNP_IDX_IO0);
  99                 init_uart8250(res0->base, &conf->com1);
 100                 break;
 101         case IT8716F_SP2:
 102                 res0 = find_resource(dev, PNP_IDX_IO0);
 103                 init_uart8250(res0->base, &conf->com2);
 104                 break;
 105         case IT8716F_EC:
 106                 res0 = find_resource(dev, PNP_IDX_IO0);
 107 #define EC_INDEX_PORT 5
 108                 init_ec(res0->base + EC_INDEX_PORT);
 109                 break;
 110         case IT8716F_KBCK:
 111                 res0 = find_resource(dev, PNP_IDX_IO0);
 112                 res1 = find_resource(dev, PNP_IDX_IO1);
 113                 pc_keyboard_init(&conf->keyboard);
 114                 break;
 115         }
 116 }
 117
 118 static void it8716f_pnp_set_resources(device_t dev)
 119 {
 120         pnp_enter_ext_func_mode(dev);
 121         pnp_set_resources(dev);
 122         pnp_exit_ext_func_mode(dev);
 123 }
 124
 125 static void it8716f_pnp_enable_resources(device_t dev)
 126 {
 127         pnp_enter_ext_func_mode(dev);
 128         pnp_enable_resources(dev);
 129         pnp_exit_ext_func_mode(dev);
 130 }
 131
 132 static void it8716f_pnp_enable(device_t dev)
 133 {
 134         pnp_enter_ext_func_mode(dev);
 135         pnp_set_logical_device(dev);
 136         pnp_set_enable(dev, dev->enabled);
 137         pnp_exit_ext_func_mode(dev);
 138 }
 139
 140 static struct device_operations ops = {
 141         .read_resources   = pnp_read_resources,
 142         .set_resources    = it8716f_pnp_set_resources,
 143         .enable_resources = it8716f_pnp_enable_resources,
 144         .enable           = it8716f_pnp_enable,
 145         .init             = it8716f_init,
 146 };
 147
 148 static struct pnp_info pnp_dev_info[] = {
 149         {&ops, IT8716F_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0},},
 150         {&ops, IT8716F_SP1, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},},
 151         {&ops, IT8716F_SP2, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},},
 152         {&ops, IT8716F_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0},},
 153         {&ops, IT8716F_EC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x7f8, 0},
 154          {0x7f8, 0x4},},
 155         {&ops, IT8716F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x7ff, 0},
 156          {0x7ff, 0x4},},
 157         {&ops, IT8716F_KBCM, PNP_IRQ0,},
 158         {&ops, IT8716F_GPIO, PNP_IO1 | PNP_IO2, {0, 0}, {0x7f8, 0}, {0x7f8, 0},},
 159         {&ops, IT8716F_MIDI, PNP_IO0 | PNP_IRQ0, {0x7fe, 0x4},},
 160         {&ops, IT8716F_GAME, PNP_IO0, {0x7ff, 0},},
 161         {&ops, IT8716F_IR,},
 162 };
 163
 164 static void enable_dev(struct device *dev)
 165 {
 166         pnp_enable_devices(dev, &ops,
 167                 ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
 168 }
 169
 170 struct chip_operations superio_ite_it8716f_ops = {
 171         CHIP_NAME("ITE IT8716F Super I/O")
 172         .enable_dev = enable_dev,
 173 };