diff options
Diffstat (limited to 'src/mainboard/lenovo/t60/dock.c')
| -rw-r--r-- | src/mainboard/lenovo/t60/dock.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t60/dock.c b/src/mainboard/lenovo/t60/dock.c new file mode 100644 index 0000000000..cfaead3ec5 --- /dev/null +++ b/src/mainboard/lenovo/t60/dock.c @@ -0,0 +1,219 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <arch/io.h> +#include <boot/tables.h> +#include <delay.h> +#include <arch/io.h> +#include "dock.h" +#include "superio/nsc/pc87384/pc87384.h" +#include "ec/acpi/ec.h" +#include "southbridge/intel/i82801gx/i82801gx.h" + +static void dlpc_write_register(int reg, int value) +{ + outb(reg, 0x164e); + outb(value, 0x164f); +} + +static u8 dlpc_read_register(int reg) +{ + outb(reg, 0x164e); + return inb(0x164f); +} + +static void dock_write_register(int reg, int value) +{ + outb(reg, 0x2e); + outb(value, 0x2f); +} + +static u8 dock_read_register(int reg) +{ + outb(reg, 0x2e); + return inb(0x2f); +} + +static void dlpc_gpio_set_mode(int port, int mode) +{ + dlpc_write_register(0xf0, port); + dlpc_write_register(0xf1, mode); +} + +static void dock_gpio_set_mode(int port, int mode, int irq) +{ + dock_write_register(0xf0, port); + dock_write_register(0xf1, mode); + dock_write_register(0xf2, irq); +} + +static void dlpc_gpio_init(void) +{ + /* Select GPIO module */ + dlpc_write_register(0x07, 0x07); + /* GPIO Base Address 0x1680 */ + dlpc_write_register(0x60, 0x16); + dlpc_write_register(0x61, 0x80); + + /* Activate GPIO */ + dlpc_write_register(0x30, 0x01); + + dlpc_gpio_set_mode(0x00, 3); + dlpc_gpio_set_mode(0x01, 3); + dlpc_gpio_set_mode(0x02, 0); + dlpc_gpio_set_mode(0x03, 3); + dlpc_gpio_set_mode(0x04, 4); + dlpc_gpio_set_mode(0x20, 4); + dlpc_gpio_set_mode(0x21, 4); + dlpc_gpio_set_mode(0x23, 4); +} + +int dlpc_init(void) +{ + int timeout = 1000; + + /* Enable 14.318MHz CLK on CLKIN */ + dlpc_write_register(0x29, 0xa0); + while(!(dlpc_read_register(0x29) & 0x10) && timeout--) + udelay(1000); + + if (!timeout) + return 1; + + /* Select DLPC module */ + dlpc_write_register(0x07, 0x19); + /* DLPC Base Address 0x164c */ + dlpc_write_register(0x60, 0x16); + dlpc_write_register(0x61, 0x4c); + /* Activate DLPC */ + dlpc_write_register(0x30, 0x01); + + dlpc_gpio_init(); + return 0; +} + +static int dock_superio_init(void) +{ + int timeout = 1000; + /* startup 14.318MHz Clock */ + dock_write_register(0x29, 0xa0); + /* wait until clock is settled */ + while(!(dock_read_register(0x29) & 0x10) && timeout--) + udelay(1000); + + if (!timeout) + return 1; + + /* set GPIO pins to Serial/Parallel Port + * functions + */ + dock_write_register(0x22, 0xeb); + + dock_write_register(0x07, PC87384_GPIO); + dock_write_register(0x60, 0x16); + dock_write_register(0x61, 0x20); + + dock_gpio_set_mode(0x00, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + dock_gpio_set_mode(0x01, PC87384_GPIO_PIN_TYPE_PUSH_PULL | + PC87384_GPIO_PIN_OE, 0x00); + + dock_gpio_set_mode(0x02, PC87384_GPIO_PIN_TYPE_PUSH_PULL | + PC87384_GPIO_PIN_OE, 0x00); + + dock_gpio_set_mode(0x03, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + dock_gpio_set_mode(0x04, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + dock_gpio_set_mode(0x05, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + dock_gpio_set_mode(0x06, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + dock_gpio_set_mode(0x07, PC87384_GPIO_PIN_DEBOUNCE | + PC87384_GPIO_PIN_PULLUP, 0x00); + + outb(0xfd, 0x1620); + + /* no GPIO events enabled for PORT0 */ + outb(0x00, 0x1622); + /* clear GPIO events on PORT0 */ + outb(0xff, 0x1623); + outb(0xff, 0x1624); + /* no GPIO events enabled for PORT1 */ + outb(0x00, 0x1626); + + /* clear GPIO events on PORT1*/ + outb(0xff, 0x1627); + outb(0x1F, 0x1628); + /* enable GPIO */ + dock_write_register(0x30, 0x01); + return 0; +} + +int dock_connect(void) +{ + int timeout = 1000; + + outb(0x07, 0x164c); + + timeout = 1000; + + while(!(inb(0x164c) & 8) && timeout--) + udelay(1000); + + if (!timeout) { + /* docking failed, disable DLPC switch */ + outb(0x00, 0x164c); + dlpc_write_register(0x30, 0x00); + return 1; + } + + /* Assert D_PLTRST# */ + outb(0xfe, 0x1680); + udelay(1000); + /* Deassert D_PLTRST# */ + outb(0xff, 0x1680); + udelay(10000); + + return dock_superio_init(); +} + +void dock_disconnect(void) +{ + /* disconnect LPC bus */ + outb(0x00, 0x164c); + /* Assert PLTRST and DLPCPD */ + outb(0xfc, 0x1680); +} + +int dock_present(void) +{ + outb(0x61, 0x15ec); + return inb(0x15ee) & 1; +} + |