Angel Pons | 89ab250 | 2020-04-03 01:22:28 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Tobias Diedrich | cee930a | 2017-02-12 14:09:06 +0100 | [diff] [blame] | 2 | |
| 3 | #include "ec.h" |
| 4 | #include <ec/compal/ene932/ec.h> |
| 5 | |
| 6 | /* The keyboard matrix tells the EC how the keyboard is wired internally */ |
| 7 | static void set_keyboard_matrix_us(void) |
| 8 | { |
| 9 | ec_kbc_write_cmd(0x59); |
| 10 | ec_kbc_write_ib(0xE5); |
| 11 | } |
| 12 | |
| 13 | /* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */ |
| 14 | static void enter_apm_mode(void) |
| 15 | { |
| 16 | ec_kbc_write_cmd(0x59); |
| 17 | ec_kbc_write_ib(0xE9); |
| 18 | } |
| 19 | |
| 20 | void lenovo_s230u_ec_init(void) |
| 21 | { |
| 22 | set_keyboard_matrix_us(); |
| 23 | |
| 24 | /* |
| 25 | * The EC has a special "blinking Caps Lock LED" mode which it normally |
| 26 | * enters when it believes the OS is not responding. It occasionally |
| 27 | * disables battery charging when in this mode, although other |
| 28 | * functionality is unaffected. Although the EC starts in APM mode by |
| 29 | * default, it only leaves the "blinking Caps Lock LED" mode after |
| 30 | * receiving the following command. |
| 31 | */ |
| 32 | enter_apm_mode(); |
| 33 | |
| 34 | /* Enable external USB port power. */ |
| 35 | ec_mm_set_bit(0x3b, 4); |
| 36 | } |