diff options
Diffstat (limited to 'driver/tcpm/tcpci.c')
| -rw-r--r-- | driver/tcpm/tcpci.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/driver/tcpm/tcpci.c b/driver/tcpm/tcpci.c index e3c266a478..60cfa33760 100644 --- a/driver/tcpm/tcpci.c +++ b/driver/tcpm/tcpci.c @@ -478,7 +478,12 @@ int tcpci_tcpm_transmit(int port, enum tcpm_transmit_type type, return rv; } -/* Returns true if TCPC has reset based on reading mask registers. */ +#ifndef CONFIG_USB_PD_TCPC_LOW_POWER +/* + * Returns true if TCPC has reset based on reading mask registers. Only need to + * check this if the TCPC low power mode (LPM) code isn't compiled in because + * LPM will automatically reset the device when the TCPC exits LPM. + */ static int register_mask_reset(int port) { int mask; @@ -495,6 +500,7 @@ static int register_mask_reset(int port) return 0; } +#endif /* * Don't let the TCPC try to pull from the RX buffer forever. We typical only @@ -571,14 +577,16 @@ void tcpci_tcpc_alert(int port) pd_event |= TASK_EVENT_WAKE; } +#ifndef CONFIG_USB_PD_TCPC_LOW_POWER /* - * TODO(crbug.com/875274): Remove this check - * * Check registers to see if we can tell that the TCPC has reset. If - * so, perform a tcpc_init. + * so, perform a tcpc_init. This only needs to happen for devices that + * don't support low power mode as the transition from low power mode + * will automatically reset the device. */ if (register_mask_reset(port)) pd_event |= PD_EVENT_TCPC_RESET; +#endif /* * Wait until all possible TCPC accesses in this function are complete |