diff options
Diffstat (limited to 'driver/tcpm/ps8xxx.c')
| -rw-r--r-- | driver/tcpm/ps8xxx.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/driver/tcpm/ps8xxx.c b/driver/tcpm/ps8xxx.c index 09e4a404b9..21a20566ff 100644 --- a/driver/tcpm/ps8xxx.c +++ b/driver/tcpm/ps8xxx.c @@ -92,6 +92,25 @@ int ps8xxx_tcpc_get_fw_version(int port, int *version) return tcpc_read(port, FW_VER_REG, version); } +#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC +/* + * Read Vbus level directly instead of using the cached version because some + * TPCPs do not fire the Vbus level change interrupt correctly after resuming + * from low-power mode. + */ +int ps8xxx_tcpm_get_vbus_level(int port) +{ + int reg; + + /* Read Power Status register */ + if (tcpc_read(port, TCPC_REG_POWER_STATUS, ®) == EC_SUCCESS) + return reg & TCPC_REG_POWER_STATUS_VBUS_PRES ? 1 : 0; + + /* If read failed, report that Vbus is off */ + return 0; +} +#endif + static int ps8xxx_tcpc_bist_mode_2(int port) { int rv; @@ -141,7 +160,7 @@ const struct tcpm_drv ps8xxx_tcpm_drv = { .release = &ps8xxx_tcpm_release, .get_cc = &tcpci_tcpm_get_cc, #ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC - .get_vbus_level = &tcpci_tcpm_get_vbus_level, + .get_vbus_level = &ps8xxx_tcpm_get_vbus_level, #endif .select_rp_value = &tcpci_tcpm_select_rp_value, .set_cc = &tcpci_tcpm_set_cc, |