On Mon, May 28, 2018 at 10:52:44AM +0800, Li Jun wrote: > In case of drp toggling, we may need set correct cc value for role control > after attach as it may never been set. Is this something that should be considered as a fix? > Signed-off-by: Li Jun <jun.li@xxxxxxx> > --- > drivers/usb/typec/tcpm.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c > index d885bff..98ea916 100644 > --- a/drivers/usb/typec/tcpm.c > +++ b/drivers/usb/typec/tcpm.c > @@ -2599,6 +2599,7 @@ static void tcpm_reset_port(struct tcpm_port *port) > tcpm_set_attached_state(port, false); > port->try_src_count = 0; > port->try_snk_count = 0; > + port->cc_req = TYPEC_CC_OPEN; > port->supply_voltage = 0; > port->current_limit = 0; > port->usb_type = POWER_SUPPLY_USB_TYPE_C; > @@ -2831,6 +2832,8 @@ static void run_state_machine(struct tcpm_port *port) > break; > > case SRC_ATTACHED: > + if (port->cc_req == TYPEC_CC_OPEN) > + tcpm_set_cc(port, tcpm_rp_cc(port)); > ret = tcpm_src_attach(port); > tcpm_set_state(port, SRC_UNATTACHED, > ret < 0 ? 0 : PD_T_PS_SOURCE_ON); > @@ -3004,6 +3007,8 @@ static void run_state_machine(struct tcpm_port *port) > tcpm_set_state(port, SNK_UNATTACHED, PD_T_PD_DEBOUNCE); > break; > case SNK_ATTACHED: > + if (port->cc_req == TYPEC_CC_OPEN) > + tcpm_set_cc(port, TYPEC_CC_RD); > ret = tcpm_snk_attach(port); > if (ret < 0) > tcpm_set_state(port, SNK_UNATTACHED, 0); -- heikki -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
