diff options
Diffstat (limited to 'board/wheatley/board.c')
| -rw-r--r-- | board/wheatley/board.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/board/wheatley/board.c b/board/wheatley/board.c index c556741dd9..537214b0d7 100644 --- a/board/wheatley/board.c +++ b/board/wheatley/board.c @@ -406,6 +406,17 @@ void board_set_gpio_hibernate_state(void) /* Change GPIOs' state in hibernate for better power consumption */ for (i = 0; i < ARRAY_SIZE(hibernate_pins); ++i) gpio_set_flags(hibernate_pins[i][0], hibernate_pins[i][1]); + + gpio_config_module(MODULE_KEYBOARD_SCAN, 0); + + /* + * Calling gpio_config_module sets disabled alternate function pins to + * GPIO_INPUT. But to prevent keypresses causing leakage currents + * while hibernating we want to enable GPIO_PULL_UP as well. + */ + gpio_set_flags_by_mask(0x2, 0x03, GPIO_INPUT | GPIO_PULL_UP); + gpio_set_flags_by_mask(0x1, 0xFF, GPIO_INPUT | GPIO_PULL_UP); + gpio_set_flags_by_mask(0x0, 0xE0, GPIO_INPUT | GPIO_PULL_UP); } /* Any wheatley boards post version 2 should have ROP_LDO_EN stuffed. */ |