src/mainboard/google/parrot/ec.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2012 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  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc.
  18  */
  19
  20 #include <arch/acpi.h>
  21 #include <types.h>
  22 #include <console/console.h>
  23 #include <device/device.h>
  24 #include <arch/io.h>
  25 #include <ec/compal/ene932/ec.h>
  26 #include "ec.h"
  27
  28
  29 void parrot_ec_init(void)
  30 {
  31         printk(BIOS_DEBUG, "Parrot EC Init\n");
  32
  33         /* Clean up the buffers. We don't know the initial condition. */
  34         kbc_cleanup_buffers();
  35
  36         /* Report EC info */
  37         /* EC version: cmd 0x51 - returns three bytes */
  38         ec_kbc_write_cmd(0x51);
  39         printk(BIOS_DEBUG,"  EC version %x.%x.%x\n",
  40                    ec_kbc_read_ob(), ec_kbc_read_ob(), ec_kbc_read_ob());
  41
  42         /* EC Project name: cmd 0x52, 0xA0 - returns five bytes */
  43         ec_kbc_write_cmd(0x52);
  44         ec_kbc_write_ib(0xA0);
  45         printk(BIOS_DEBUG,"  EC Project: %c%c%c%c%c\n",
  46                    ec_kbc_read_ob(),ec_kbc_read_ob(),ec_kbc_read_ob(),
  47                    ec_kbc_read_ob(), ec_kbc_read_ob());
  48
  49         /* Print the hardware revision */
  50         printk(BIOS_DEBUG,"  Parrot Revision %x\n", parrot_rev());
  51
  52         /* US Keyboard */
  53         ec_kbc_write_cmd(0x59);
  54         ec_kbc_write_ib(0xE5);
  55
  56         /* Enable IRQ1 */
  57         ec_kbc_write_cmd(0x59);
  58         ec_kbc_write_ib(0xD1);
  59
  60         /* TODO - Do device detection and device maintain state (nvs) */
  61         /* Enable Wireless and Bluetooth */
  62         ec_kbc_write_cmd(0x45);
  63         ec_kbc_write_ib(0xAD);
  64
  65         /* Set Wireless and Bluetooth Available */
  66         ec_kbc_write_cmd(0x45);
  67         ec_kbc_write_ib(0xA8);
  68
  69         /* Set Wireless and Bluetooth Enable */
  70         ec_kbc_write_cmd(0x45);
  71         ec_kbc_write_ib(0xA2);
  72 }
  73
  74
  75 /* Parrot Hardware Revision */
  76 u8 parrot_rev(void)
  77 {
  78         ec_kbc_write_cmd(0x45);
  79         ec_kbc_write_ib(0x40);
  80         return ec_kbc_read_ob();
  81 }