/* * 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); }