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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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.
*/
#include "ec.h"
#include <ec/compal/ene932/ec.h>
/* The keyboard matrix tells the EC how the keyboard is wired internally */
static void set_keyboard_matrix_us(void)
{
ec_kbc_write_cmd(0x59);
ec_kbc_write_ib(0xE5);
}
/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */
static void enter_apm_mode(void)
{
ec_kbc_write_cmd(0x59);
ec_kbc_write_ib(0xE9);
}
void lenovo_s230u_ec_init(void)
{
set_keyboard_matrix_us();
/*
* The EC has a special "blinking Caps Lock LED" mode which it normally
* enters when it believes the OS is not responding. It occasionally
* disables battery charging when in this mode, although other
* functionality is unaffected. Although the EC starts in APM mode by
* default, it only leaves the "blinking Caps Lock LED" mode after
* receiving the following command.
*/
enter_apm_mode();
/* Enable external USB port power. */
ec_mm_set_bit(0x3b, 4);
}
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