Sven Schnelle | d8129f9 | 2011-04-20 09:12:17 +0000 | [diff] [blame] | 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 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
| 19 | * MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include <console/console.h> |
| 23 | #include <device/device.h> |
| 24 | #include <arch/io.h> |
| 25 | #include <boot/tables.h> |
| 26 | #include <delay.h> |
| 27 | #include <arch/io.h> |
| 28 | #include "dock.h" |
| 29 | #include "superio/nsc/pc87384/pc87384.h" |
| 30 | #include "ec/acpi/ec.h" |
| 31 | #include "southbridge/intel/i82801gx/i82801gx.h" |
| 32 | |
| 33 | static void dlpc_write_register(int reg, int value) |
| 34 | { |
| 35 | outb(reg, 0x164e); |
| 36 | outb(value, 0x164f); |
| 37 | } |
| 38 | |
| 39 | static u8 dlpc_read_register(int reg) |
| 40 | { |
| 41 | outb(reg, 0x164e); |
| 42 | return inb(0x164f); |
| 43 | } |
| 44 | |
| 45 | static void dock_write_register(int reg, int value) |
| 46 | { |
| 47 | outb(reg, 0x2e); |
| 48 | outb(value, 0x2f); |
| 49 | } |
| 50 | |
| 51 | static u8 dock_read_register(int reg) |
| 52 | { |
| 53 | outb(reg, 0x2e); |
| 54 | return inb(0x2f); |
| 55 | } |
| 56 | |
| 57 | static void dlpc_gpio_set_mode(int port, int mode) |
| 58 | { |
| 59 | dlpc_write_register(0xf0, port); |
| 60 | dlpc_write_register(0xf1, mode); |
| 61 | } |
| 62 | |
| 63 | static void dock_gpio_set_mode(int port, int mode, int irq) |
| 64 | { |
| 65 | dock_write_register(0xf0, port); |
| 66 | dock_write_register(0xf1, mode); |
| 67 | dock_write_register(0xf2, irq); |
| 68 | } |
| 69 | |
| 70 | static void dlpc_gpio_init(void) |
| 71 | { |
| 72 | /* Select GPIO module */ |
| 73 | dlpc_write_register(0x07, 0x07); |
| 74 | /* GPIO Base Address 0x1680 */ |
| 75 | dlpc_write_register(0x60, 0x16); |
| 76 | dlpc_write_register(0x61, 0x80); |
| 77 | |
| 78 | /* Activate GPIO */ |
| 79 | dlpc_write_register(0x30, 0x01); |
| 80 | |
| 81 | dlpc_gpio_set_mode(0x00, 3); |
| 82 | dlpc_gpio_set_mode(0x01, 3); |
| 83 | dlpc_gpio_set_mode(0x02, 0); |
| 84 | dlpc_gpio_set_mode(0x03, 3); |
| 85 | dlpc_gpio_set_mode(0x04, 4); |
| 86 | dlpc_gpio_set_mode(0x20, 4); |
| 87 | dlpc_gpio_set_mode(0x21, 4); |
| 88 | dlpc_gpio_set_mode(0x23, 4); |
| 89 | } |
| 90 | |
| 91 | int dlpc_init(void) |
| 92 | { |
| 93 | int timeout = 1000; |
| 94 | |
| 95 | /* Enable 14.318MHz CLK on CLKIN */ |
| 96 | dlpc_write_register(0x29, 0xa0); |
| 97 | while(!(dlpc_read_register(0x29) & 0x10) && timeout--) |
| 98 | udelay(1000); |
| 99 | |
| 100 | if (!timeout) |
| 101 | return 1; |
| 102 | |
| 103 | /* Select DLPC module */ |
| 104 | dlpc_write_register(0x07, 0x19); |
| 105 | /* DLPC Base Address 0x164c */ |
| 106 | dlpc_write_register(0x60, 0x16); |
| 107 | dlpc_write_register(0x61, 0x4c); |
| 108 | /* Activate DLPC */ |
| 109 | dlpc_write_register(0x30, 0x01); |
| 110 | |
| 111 | dlpc_gpio_init(); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | static int dock_superio_init(void) |
| 116 | { |
| 117 | int timeout = 1000; |
| 118 | /* startup 14.318MHz Clock */ |
| 119 | dock_write_register(0x29, 0xa0); |
| 120 | /* wait until clock is settled */ |
| 121 | while(!(dock_read_register(0x29) & 0x10) && timeout--) |
| 122 | udelay(1000); |
| 123 | |
| 124 | if (!timeout) |
| 125 | return 1; |
| 126 | |
| 127 | /* set GPIO pins to Serial/Parallel Port |
| 128 | * functions |
| 129 | */ |
| 130 | dock_write_register(0x22, 0xeb); |
| 131 | |
| 132 | dock_write_register(0x07, PC87384_GPIO); |
| 133 | dock_write_register(0x60, 0x16); |
| 134 | dock_write_register(0x61, 0x20); |
Sven Schnelle | 40d99bc | 2011-07-11 15:22:42 +0200 | [diff] [blame^] | 135 | /* enable GPIO */ |
| 136 | dock_write_register(0x30, 0x01); |
Sven Schnelle | d8129f9 | 2011-04-20 09:12:17 +0000 | [diff] [blame] | 137 | |
| 138 | dock_gpio_set_mode(0x00, PC87384_GPIO_PIN_DEBOUNCE | |
| 139 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 140 | |
| 141 | dock_gpio_set_mode(0x01, PC87384_GPIO_PIN_TYPE_PUSH_PULL | |
| 142 | PC87384_GPIO_PIN_OE, 0x00); |
| 143 | |
| 144 | dock_gpio_set_mode(0x02, PC87384_GPIO_PIN_TYPE_PUSH_PULL | |
| 145 | PC87384_GPIO_PIN_OE, 0x00); |
| 146 | |
| 147 | dock_gpio_set_mode(0x03, PC87384_GPIO_PIN_DEBOUNCE | |
| 148 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 149 | |
| 150 | dock_gpio_set_mode(0x04, PC87384_GPIO_PIN_DEBOUNCE | |
| 151 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 152 | |
| 153 | dock_gpio_set_mode(0x05, PC87384_GPIO_PIN_DEBOUNCE | |
| 154 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 155 | |
| 156 | dock_gpio_set_mode(0x06, PC87384_GPIO_PIN_DEBOUNCE | |
| 157 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 158 | |
| 159 | dock_gpio_set_mode(0x07, PC87384_GPIO_PIN_DEBOUNCE | |
| 160 | PC87384_GPIO_PIN_PULLUP, 0x00); |
| 161 | |
Sven Schnelle | d8129f9 | 2011-04-20 09:12:17 +0000 | [diff] [blame] | 162 | |
| 163 | /* no GPIO events enabled for PORT0 */ |
| 164 | outb(0x00, 0x1622); |
| 165 | /* clear GPIO events on PORT0 */ |
| 166 | outb(0xff, 0x1623); |
| 167 | outb(0xff, 0x1624); |
| 168 | /* no GPIO events enabled for PORT1 */ |
| 169 | outb(0x00, 0x1626); |
| 170 | |
| 171 | /* clear GPIO events on PORT1*/ |
| 172 | outb(0xff, 0x1627); |
| 173 | outb(0x1F, 0x1628); |
Sven Schnelle | 40d99bc | 2011-07-11 15:22:42 +0200 | [diff] [blame^] | 174 | outb(0xfd, 0x1620); |
Sven Schnelle | d8129f9 | 2011-04-20 09:12:17 +0000 | [diff] [blame] | 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | int dock_connect(void) |
| 179 | { |
| 180 | int timeout = 1000; |
| 181 | |
| 182 | outb(0x07, 0x164c); |
| 183 | |
| 184 | timeout = 1000; |
| 185 | |
| 186 | while(!(inb(0x164c) & 8) && timeout--) |
| 187 | udelay(1000); |
| 188 | |
| 189 | if (!timeout) { |
| 190 | /* docking failed, disable DLPC switch */ |
| 191 | outb(0x00, 0x164c); |
| 192 | dlpc_write_register(0x30, 0x00); |
| 193 | return 1; |
| 194 | } |
| 195 | |
| 196 | /* Assert D_PLTRST# */ |
| 197 | outb(0xfe, 0x1680); |
| 198 | udelay(1000); |
| 199 | /* Deassert D_PLTRST# */ |
| 200 | outb(0xff, 0x1680); |
| 201 | udelay(10000); |
| 202 | |
| 203 | return dock_superio_init(); |
| 204 | } |
| 205 | |
| 206 | void dock_disconnect(void) |
| 207 | { |
| 208 | /* disconnect LPC bus */ |
| 209 | outb(0x00, 0x164c); |
| 210 | /* Assert PLTRST and DLPCPD */ |
| 211 | outb(0xfc, 0x1680); |
| 212 | } |
| 213 | |
| 214 | int dock_present(void) |
| 215 | { |
| 216 | outb(0x61, 0x15ec); |
| 217 | return inb(0x15ee) & 1; |
| 218 | } |
| 219 | |