diff options
| -rw-r--r-- | common/usb_pd_protocol.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/usb_pd_protocol.c b/common/usb_pd_protocol.c index 179ac828d0..214d5f15a0 100644 --- a/common/usb_pd_protocol.c +++ b/common/usb_pd_protocol.c @@ -811,6 +811,16 @@ void pd_task(void) timeout = 10*MSEC; break; case PD_STATE_SRC_DISCOVERY: + /* Detect disconnect by monitoring Vnc */ + cc1_volt = pd_adc_read(pd_polarity); + if (cc1_volt > PD_SRC_VNC) { + /* The sink disappeared ... */ + pd_power_supply_reset(); + pd_task_state = PD_STATE_SRC_DISCONNECTED; + /* Debouncing */ + timeout = 50*MSEC; + break; + } /* Query capabilites of the other side */ res = send_source_cap(ctxt); /* packet was acked => PD capable device) */ |