src/mainboard/samsung/lumpy/ec.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/acpi.h>
  17 #include <types.h>
  18 #include <console/console.h>
  19 #include <ec/smsc/mec1308/ec.h>
  20 #include "ec.h"
  21
  22 void lumpy_ec_init(void)
  23 {
  24         printk(BIOS_DEBUG, "lumpy_ec_init\n");
  25
  26         if (acpi_is_wakeup_s3())
  27                 return;
  28
  29         /*
  30          * Enable EC control of fan speed.
  31          *
  32          * This will be changed to OS control in ACPI EC _REG
  33          * method when the OS is ready to control the fan.
  34          */
  35         ec_write(EC_FAN_SPEED, 0);
  36
  37         send_ec_command_data(EC_BATTERY_MODE, EC_BATTERY_MODE_NORMAL);
  38         send_ec_command_data(EC_POWER_BUTTON_MODE, EC_POWER_BUTTON_MODE_OS);
  39 }