src/mainboard/lenovo/x60/dock.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; version 2 of
   9  * the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <console/console.h>
  18 #include <device/device.h>
  19 #include <arch/io.h>
  20 #include <delay.h>
  21 #include <arch/io.h>
  22 #include "dock.h"
  23 #include "southbridge/intel/i82801gx/i82801gx.h"
  24 #include <superio/nsc/pc87392/pc87392.h>
  25
  26 static void dlpc_write_register(int reg, int value)
  27 {
  28         outb(reg, 0x164e);
  29         outb(value, 0x164f);
  30 }
  31
  32 static u8 dlpc_read_register(int reg)
  33 {
  34         outb(reg, 0x164e);
  35         return inb(0x164f);
  36 }
  37
  38 static void dock_write_register(int reg, int value)
  39 {
  40         outb(reg, 0x2e);
  41         outb(value, 0x2f);
  42 }
  43
  44 static u8 dock_read_register(int reg)
  45 {
  46         outb(reg, 0x2e);
  47         return inb(0x2f);
  48 }
  49
  50 static void dlpc_gpio_set_mode(int port, int mode)
  51 {
  52         dlpc_write_register(0xf0, port);
  53         dlpc_write_register(0xf1, mode);
  54 }
  55
  56 static void dock_gpio_set_mode(int port, int mode, int irq)
  57 {
  58         dock_write_register(0xf0, port);
  59         dock_write_register(0xf1, mode);
  60         dock_write_register(0xf2, irq);
  61 }
  62
  63 static void dlpc_gpio_init(void)
  64 {
  65         /* Select GPIO module */
  66         dlpc_write_register(0x07, 0x07);
  67         /* GPIO Base Address 0x1680 */
  68         dlpc_write_register(0x60, 0x16);
  69         dlpc_write_register(0x61, 0x80);
  70
  71         /* Activate GPIO */
  72         dlpc_write_register(0x30, 0x01);
  73
  74         dlpc_gpio_set_mode(0x00, 3);
  75         dlpc_gpio_set_mode(0x01, 3);
  76         dlpc_gpio_set_mode(0x02, 0);
  77         dlpc_gpio_set_mode(0x03, 3);
  78         dlpc_gpio_set_mode(0x04, 4);
  79         dlpc_gpio_set_mode(0x20, 4);
  80         dlpc_gpio_set_mode(0x21, 4);
  81         dlpc_gpio_set_mode(0x23, 4);
  82 }
  83
  84 int dlpc_init(void)
  85 {
  86         int timeout = 1000;
  87
  88         /* Enable 14.318MHz CLK on CLKIN */
  89         dlpc_write_register(0x29, 0xa0);
  90         while(!(dlpc_read_register(0x29) & 0x10) && timeout--)
  91                 udelay(1000);
  92
  93         if (!timeout)
  94                 return 1;
  95
  96         /* Select DLPC module */
  97         dlpc_write_register(0x07, 0x19);
  98         /* DLPC Base Address 0x164c */
  99         dlpc_write_register(0x60, 0x16);
 100         dlpc_write_register(0x61, 0x4c);
 101         /* Activate DLPC */
 102         dlpc_write_register(0x30, 0x01);
 103
 104         dlpc_gpio_init();
 105
 106         return 0;
 107 }
 108
 109 int dock_connect(void)
 110 {
 111         int timeout = 1000;
 112
 113         outb(0x07, 0x164c);
 114
 115         timeout = 1000;
 116
 117         while(!(inb(0x164c) & 8) && timeout--)
 118                 udelay(1000);
 119
 120         if (!timeout) {
 121                 /* docking failed, disable DLPC switch */
 122                 outb(0x00, 0x164c);
 123                 dlpc_write_register(0x30, 0x00);
 124                 return 1;
 125         }
 126
 127         /* Assert D_PLTRST# */
 128         outb(0xfe, 0x1680);
 129         udelay(100000);
 130         /* Deassert D_PLTRST# */
 131         outb(0xff, 0x1680);
 132
 133         udelay(100000);
 134
 135         /* startup 14.318MHz Clock */
 136         dock_write_register(0x29, 0x06);
 137         /* wait until clock is settled */
 138         timeout = 1000;
 139         while(!(dock_read_register(0x29) & 0x08) && timeout--)
 140                 udelay(1000);
 141
 142         if (!timeout)
 143                 return 1;
 144
 145         /* Pin  6: CLKRUN
 146          * Pin 72:  #DR1
 147          * Pin 19: #SMI
 148          * Pin 73: #MTR
 149          */
 150         dock_write_register(0x24, 0x37);
 151
 152         /* PNF active HIGH */
 153         dock_write_register(0x25, 0xa0);
 154
 155         /* disable FDC */
 156         dock_write_register(0x26, 0x01);
 157
 158         /* Enable GPIO IRQ to #SMI */
 159         dock_write_register(0x28, 0x02);
 160
 161         /* select GPIO */
 162         dock_write_register(0x07, 0x07);
 163
 164         /* set base address */
 165         dock_write_register(0x60, 0x16);
 166         dock_write_register(0x61, 0x20);
 167
 168         /* init GPIO pins */
 169         dock_gpio_set_mode(0x00, PC87392_GPIO_PIN_DEBOUNCE |
 170                                  PC87392_GPIO_PIN_PULLUP, 0x00);
 171
 172         dock_gpio_set_mode(0x01, PC87392_GPIO_PIN_DEBOUNCE |
 173                                  PC87392_GPIO_PIN_PULLUP,
 174                                  PC87392_GPIO_PIN_TRIGGERS_SMI);
 175
 176         dock_gpio_set_mode(0x02, PC87392_GPIO_PIN_PULLUP, 0x00);
 177         dock_gpio_set_mode(0x03, PC87392_GPIO_PIN_PULLUP, 0x00);
 178         dock_gpio_set_mode(0x04, PC87392_GPIO_PIN_PULLUP, 0x00);
 179         dock_gpio_set_mode(0x05, PC87392_GPIO_PIN_PULLUP, 0x00);
 180         dock_gpio_set_mode(0x06, PC87392_GPIO_PIN_PULLUP, 0x00);
 181         dock_gpio_set_mode(0x07, PC87392_GPIO_PIN_PULLUP, 0x02);
 182
 183         dock_gpio_set_mode(0x10, PC87392_GPIO_PIN_DEBOUNCE |
 184                                  PC87392_GPIO_PIN_PULLUP,
 185                                  PC87392_GPIO_PIN_TRIGGERS_SMI);
 186
 187         dock_gpio_set_mode(0x11, PC87392_GPIO_PIN_PULLUP, 0x00);
 188         dock_gpio_set_mode(0x12, PC87392_GPIO_PIN_PULLUP, 0x00);
 189         dock_gpio_set_mode(0x13, PC87392_GPIO_PIN_PULLUP, 0x00);
 190         dock_gpio_set_mode(0x14, PC87392_GPIO_PIN_PULLUP, 0x00);
 191         dock_gpio_set_mode(0x15, PC87392_GPIO_PIN_PULLUP, 0x00);
 192         dock_gpio_set_mode(0x16, PC87392_GPIO_PIN_PULLUP |
 193                                  PC87392_GPIO_PIN_OE , 0x00);
 194
 195         dock_gpio_set_mode(0x17, PC87392_GPIO_PIN_PULLUP, 0x00);
 196
 197         dock_gpio_set_mode(0x20, PC87392_GPIO_PIN_TYPE_PUSH_PULL |
 198                                  PC87392_GPIO_PIN_OE, 0x00);
 199
 200         dock_gpio_set_mode(0x21, PC87392_GPIO_PIN_TYPE_PUSH_PULL |
 201                                  PC87392_GPIO_PIN_OE, 0x00);
 202
 203         dock_gpio_set_mode(0x22, PC87392_GPIO_PIN_PULLUP, 0x00);
 204         dock_gpio_set_mode(0x23, PC87392_GPIO_PIN_PULLUP, 0x00);
 205         dock_gpio_set_mode(0x24, PC87392_GPIO_PIN_PULLUP, 0x00);
 206         dock_gpio_set_mode(0x25, PC87392_GPIO_PIN_PULLUP, 0x00);
 207         dock_gpio_set_mode(0x26, PC87392_GPIO_PIN_PULLUP, 0x00);
 208         dock_gpio_set_mode(0x27, PC87392_GPIO_PIN_PULLUP, 0x00);
 209
 210         dock_gpio_set_mode(0x30, PC87392_GPIO_PIN_PULLUP, 0x00);
 211         dock_gpio_set_mode(0x31, PC87392_GPIO_PIN_PULLUP, 0x00);
 212         dock_gpio_set_mode(0x32, PC87392_GPIO_PIN_PULLUP, 0x00);
 213         dock_gpio_set_mode(0x33, PC87392_GPIO_PIN_PULLUP, 0x00);
 214         dock_gpio_set_mode(0x34, PC87392_GPIO_PIN_PULLUP, 0x00);
 215
 216         dock_gpio_set_mode(0x35, PC87392_GPIO_PIN_PULLUP |
 217                                  PC87392_GPIO_PIN_OE, 0x00);
 218
 219         dock_gpio_set_mode(0x36, PC87392_GPIO_PIN_PULLUP, 0x00);
 220         dock_gpio_set_mode(0x37, PC87392_GPIO_PIN_PULLUP, 0x00);
 221
 222         /* enable GPIO */
 223         dock_write_register(0x30, 0x01);
 224
 225         outb(0x00, 0x1628);
 226         outb(0x00, 0x1623);
 227         outb(0x82, 0x1622);
 228         outb(0xff, 0x1624);
 229
 230         /* Enable USB and Ultrabay power */
 231         outb(0x03, 0x1628);
 232
 233         dock_write_register(0x07, 0x03);
 234         dock_write_register(0x30, 0x01);
 235         return 0;
 236 }
 237
 238 void dock_disconnect(void)
 239 {
 240         printk(BIOS_DEBUG, "%s enter\n", __func__);
 241         /* disconnect LPC bus */
 242         outb(0x00, 0x164c);
 243         udelay(10000);
 244
 245         /* Assert PLTRST and DLPCPD */
 246         outb(0xfc, 0x1680);
 247         udelay(10000);
 248
 249         /* disable Ultrabay and USB Power */
 250         outb(0x00, 0x1628);
 251         udelay(10000);
 252
 253         printk(BIOS_DEBUG, "%s finish\n", __func__);
 254 }
 255
 256 int dock_present(void)
 257 {
 258         return !((inb(DEFAULT_GPIOBASE + 0x0c) >> 13) & 1);
 259 }
 260
 261 int dock_ultrabay_device_present(void)
 262 {
 263         return inb(0x1621) & 0x02 ? 0 : 1;
 264 }