diff options
Diffstat (limited to 'driver/tcpm/ps8xxx.c')
| -rw-r--r-- | driver/tcpm/ps8xxx.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/driver/tcpm/ps8xxx.c b/driver/tcpm/ps8xxx.c index 177a3ee6f4..77de4fca15 100644 --- a/driver/tcpm/ps8xxx.c +++ b/driver/tcpm/ps8xxx.c @@ -133,6 +133,46 @@ static int ps8xxx_tcpm_release(int port) return tcpci_tcpm_release(port); } +#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE +static int ps8xxx_tcpc_drp_toggle(int port) +{ + int rv; + int status; + int opposite_pull; + + /* + * Workaround for PS8805/PS8815, which can't restart Connection + * Detection if the partner already presents pull. Now starts with + * the opposite pull. Check b/149570002. + */ + if (IS_ENABLED(CONFIG_USB_PD_TCPM_PS8805) || + IS_ENABLED(CONFIG_USB_PD_TCPM_PS8815)) { + /* Check CC_STATUS for the current pull */ + rv = tcpc_read(port, TCPC_REG_CC_STATUS, &status); + if (status & TCPC_REG_CC_STATUS_CONNECT_RESULT_MASK) { + /* Current pull: Rd */ + opposite_pull = TYPEC_CC_RP; + } else { + /* Current pull: Rp */ + opposite_pull = TYPEC_CC_RD; + } + + /* Set auto drp toggle, starting with the opposite pull */ + rv |= tcpci_set_role_ctrl(port, 1, TYPEC_RP_USB, opposite_pull); + + /* Set Look4Connection command */ + rv |= tcpc_write(port, TCPC_REG_COMMAND, + TCPC_REG_COMMAND_LOOK4CONNECTION); + + return rv; + } else { + return tcpci_tcpc_drp_toggle(port); + } +} +#endif + + + static int ps8xxx_get_chip_info(int port, int live, struct ec_response_pd_chip_info_v1 **chip_info) { @@ -316,7 +356,7 @@ const struct tcpm_drv ps8xxx_tcpm_drv = { .tcpc_discharge_vbus = &tcpci_tcpc_discharge_vbus, #endif #ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE - .drp_toggle = &tcpci_tcpc_drp_toggle, + .drp_toggle = &ps8xxx_tcpc_drp_toggle, #endif #ifdef CONFIG_USBC_PPC .set_snk_ctrl = &tcpci_tcpm_set_snk_ctrl, |