diff options
Diffstat (limited to 'driver/tcpm/nct38xx.c')
| -rw-r--r-- | driver/tcpm/nct38xx.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/driver/tcpm/nct38xx.c b/driver/tcpm/nct38xx.c index 633c2155c9..23d97b25bb 100644 --- a/driver/tcpm/nct38xx.c +++ b/driver/tcpm/nct38xx.c @@ -13,6 +13,8 @@ #include "nct38xx.h" #include "task.h" #include "tcpci.h" +#include "usb_common.h" +#include "usb_pd.h" #if !defined(CONFIG_USB_PD_TCPM_TCPCI) #error "NCT38XX is using part of standard TCPCI control" @@ -180,6 +182,33 @@ static void nct38xx_tcpc_alert(int port) } +#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE +static void nct38xx_auto_toggle_connection(int port, + enum tcpc_cc_voltage_status cc1, + enum tcpc_cc_voltage_status cc2) +{ + int polarity; + + /* + * Get the current polarity so we can make sure the + * PD stack will set the CC lines as we expect and + * not to setting both CC lines the same due to + * NO-POLARITY still being set in the cache. This + * will cause this chip to go back to searching + * auto toggle with an open on both CC lines. + * + * TODO(b/149415919): Consider trying to clear the DRP + * mode instead of changing the polarity + */ + if (cc_is_rp(cc1) || cc_is_rp(cc2)) + polarity = get_snk_polarity(cc1, cc2); + else + polarity = get_src_polarity(cc1, cc2); + + pd_set_polarity(port, polarity); +} +#endif + const struct tcpm_drv nct38xx_tcpm_drv = { .init = &nct38xx_tcpm_init, .release = &tcpci_tcpm_release, @@ -203,6 +232,7 @@ const struct tcpm_drv nct38xx_tcpm_drv = { &tcpci_tcpc_enable_auto_discharge_disconnect, #ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE .drp_toggle = &tcpci_tcpc_drp_toggle, + .tcpc_auto_toggle_connection = &nct38xx_auto_toggle_connection, #endif #ifdef CONFIG_USBC_PPC .set_snk_ctrl = &tcpci_tcpm_set_snk_ctrl, |