diff options
| -rw-r--r-- | common/usb_pd_tcpc.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/common/usb_pd_tcpc.c b/common/usb_pd_tcpc.c index fa740ba4c4..09eeddae25 100644 --- a/common/usb_pd_tcpc.c +++ b/common/usb_pd_tcpc.c @@ -757,22 +757,25 @@ int tcpc_run(int port, int evt) else alert(port, TCPC_REG_ALERT1, TCPC_REG_ALERT1_TX_DISCARDED); - } - - /* CC pull changed, wait 1ms for CC voltage to stabilize */ - if (evt & PD_EVENT_CC) - usleep(MSEC); - - /* check CC lines */ - for (i = 0; i < 2; i++) { - /* read CC voltage */ - cc = pd_adc_read(port, i); - - /* convert voltage to status, and check status change */ - cc = cc_voltage_to_status(port, cc); - if (pd[port].cc_status[i] != cc) { - pd[port].cc_status[i] = cc; - alert(port, TCPC_REG_ALERT1, TCPC_REG_ALERT1_CC_STATUS); + } else { + /* If we have nothing to transmit, then sample CC lines */ + + /* CC pull changed, wait 1ms for CC voltage to stabilize */ + if (evt & PD_EVENT_CC) + usleep(MSEC); + + /* check CC lines */ + for (i = 0; i < 2; i++) { + /* read CC voltage */ + cc = pd_adc_read(port, i); + + /* convert voltage to status, and check status change */ + cc = cc_voltage_to_status(port, cc); + if (pd[port].cc_status[i] != cc) { + pd[port].cc_status[i] = cc; + alert(port, TCPC_REG_ALERT1, + TCPC_REG_ALERT1_CC_STATUS); + } } } |