| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #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); |
| } |