diff options
Diffstat (limited to 'board/reef/board.c')
| -rw-r--r-- | board/reef/board.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/board/reef/board.c b/board/reef/board.c index c39a038aa4..cbba33e83d 100644 --- a/board/reef/board.c +++ b/board/reef/board.c @@ -83,28 +83,27 @@ static void tcpc_alert_event(enum gpio_signal signal) #ifdef CONFIG_USB_PD_TCPC_LOW_POWER static void anx74xx_cable_det_handler(void) { - int level = gpio_get_level(GPIO_USB_C0_CABLE_DET); + int cable_det = gpio_get_level(GPIO_USB_C0_CABLE_DET); + int reset_n = gpio_get_level(GPIO_USB_C0_PD_RST_L); /* - * Setting the low power is handled by DRP status hence - * handle only the attach event. + * A cable_det low->high transition was detected. If following the + * debounce time, cable_det is high, and reset_n is low, then ANX3429 is + * currently in standby mode and needs to be woken up. Set the + * TCPC_RESET event which will bring the ANX3429 out of standby + * mode. Setting this event is gated on reset_n being low because the + * ANX3429 will always set cable_det when transitioning to normal mode + * and if in normal mode, then there is no need to trigger a tcpc reset. */ - if (level) - anx74xx_handle_power_mode(USB_PD_PORT_ANX74XX, - ANX74XX_NORMAL_MODE); - - /* confirm if cable_det is asserted */ - if (!level || gpio_get_level(GPIO_USB_C0_PD_RST_L)) - return; - - task_set_event(TASK_ID_PD_C0, PD_EVENT_TCPC_RESET, 0); + if (cable_det && !reset_n) + task_set_event(TASK_ID_PD_C0, PD_EVENT_TCPC_RESET, 0); } DECLARE_DEFERRED(anx74xx_cable_det_handler); DECLARE_HOOK(HOOK_CHIPSET_RESUME, anx74xx_cable_det_handler, HOOK_PRIO_LAST); void anx74xx_cable_det_interrupt(enum gpio_signal signal) { - /* debounce for 2ms */ + /* debounce for 2 msec */ hook_call_deferred(&anx74xx_cable_det_handler_data, (2 * MSEC)); } #endif |