src/mainboard/lenovo/x200/dock.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
   5  * Copyright (C) 2013 Vladimir Serbinenko <phcoder@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; version 2 of
  10  * the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #define __SIMPLE_DEVICE__
  19 #include <console/console.h>
  20 #include <arch/io.h>
  21 #include <device/device.h>
  22 #include <device/pci.h>
  23 #include <delay.h>
  24 #include "dock.h"
  25 #include <southbridge/intel/i82801ix/i82801ix.h>
  26 #include <ec/lenovo/h8/h8.h>
  27 #include <ec/acpi/ec.h>
  28
  29 #define LPC_DEV PCI_DEV(0, 0x1f, 0)
  30
  31 void h8_mainboard_init_dock (void)
  32 {
  33         if (dock_present()) {
  34                 printk(BIOS_DEBUG, "dock is connected\n");
  35                 dock_connect();
  36         } else
  37                 printk(BIOS_DEBUG, "dock is not connected\n");
  38 }
  39
  40 void dock_connect(void)
  41 {
  42         u16 gpiobase = pci_read_config16(LPC_DEV, D31F0_GPIO_BASE) & 0xfffc;
  43         ec_set_bit(0x02, 0);
  44         outl(inl(gpiobase + 0x0c) | (1 << 28), gpiobase + 0x0c);
  45 }
  46
  47 void dock_disconnect(void)
  48 {
  49         u16 gpiobase = pci_read_config16(LPC_DEV, D31F0_GPIO_BASE) & 0xfffc;
  50         ec_clr_bit(0x02, 0);
  51         outl(inl(gpiobase + 0x0c) & ~(1 << 28), gpiobase + 0x0c);
  52 }
  53
  54 int dock_present(void)
  55 {
  56         u16 gpiobase = pci_read_config16(LPC_DEV, D31F0_GPIO_BASE) & 0xfffc;
  57         u8 st = inb(gpiobase + 0x0c);
  58
  59         return ((st >> 2) & 7) != 7;
  60 }