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Diffstat (limited to 'src/mainboard/lenovo/g505s/ec.c')
-rw-r--r-- | src/mainboard/lenovo/g505s/ec.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/g505s/ec.c b/src/mainboard/lenovo/g505s/ec.c new file mode 100644 index 0000000000..61f70b7a4e --- /dev/null +++ b/src/mainboard/lenovo/g505s/ec.c @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2014 Alexandru Gagniuc <mr.nuke.me@gmail.com> + * Subject to the GNU GPL v2, or (at your option) any later version. + */ + +#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_g505s_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(); +} |