On 4/14/20 5:04 AM, Heikki Krogerus wrote: > On Thu, Apr 02, 2020 at 02:59:47PM -0700, Badhri Jagan Sridharan wrote: >> After PORT_RESET, the port is set to the appropriate >> default_state. Ignore processing CC changes here as this >> could cause the port to be switched into sink states >> by default. >> >> echo source > /sys/class/typec/port0/port_type >> >> Before: >> [ 154.528547] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms >> [ 154.528560] CC1: 0 -> 0, CC2: 3 -> 0 [state PORT_RESET, polarity 0, disconnected] >> [ 154.528564] state change PORT_RESET -> SNK_UNATTACHED >> >> After: >> [ 151.068814] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms [rev3 NONE_AMS] >> [ 151.072440] CC1: 3 -> 0, CC2: 0 -> 0 [state PORT_RESET, polarity 0, disconnected] >> [ 151.172117] state change PORT_RESET -> PORT_RESET_WAIT_OFF [delayed 100 ms] >> [ 151.172136] pending state change PORT_RESET_WAIT_OFF -> SRC_UNATTACHED @ 870 ms [rev3 NONE_AMS] >> [ 152.060106] state change PORT_RESET_WAIT_OFF -> SRC_UNATTACHED [delayed 870 ms] >> [ 152.060118] Start toggling > > Guenter, can you take a look at this? > Sorry, looks like I missed the original patch. Makes sense to me. Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> >> Signed-off-by: Badhri Jagan Sridharan <badhri@xxxxxxxxxx> >> --- >> drivers/usb/typec/tcpm/tcpm.c | 26 ++++++++++++++++++++++++++ >> 1 file changed, 26 insertions(+) >> >> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c >> index de3576e6530ab2..82b19ebd7838e0 100644 >> --- a/drivers/usb/typec/tcpm/tcpm.c >> +++ b/drivers/usb/typec/tcpm/tcpm.c >> @@ -3794,6 +3794,14 @@ static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1, >> */ >> break; >> >> + case PORT_RESET: >> + case PORT_RESET_WAIT_OFF: >> + /* >> + * State set back to default mode once the timer completes. >> + * Ignore CC changes here. >> + */ >> + break; >> + >> default: >> if (tcpm_port_is_disconnected(port)) >> tcpm_set_state(port, unattached_state(port), 0); >> @@ -3855,6 +3863,15 @@ static void _tcpm_pd_vbus_on(struct tcpm_port *port) >> case SRC_TRY_DEBOUNCE: >> /* Do nothing, waiting for sink detection */ >> break; >> + >> + case PORT_RESET: >> + case PORT_RESET_WAIT_OFF: >> + /* >> + * State set back to default mode once the timer completes. >> + * Ignore vbus changes here. >> + */ >> + break; >> + >> default: >> break; >> } >> @@ -3908,10 +3925,19 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) >> case PORT_RESET_WAIT_OFF: >> tcpm_set_state(port, tcpm_default_state(port), 0); >> break; >> + >> case SRC_TRY_WAIT: >> case SRC_TRY_DEBOUNCE: >> /* Do nothing, waiting for sink detection */ >> break; >> + >> + case PORT_RESET: >> + /* >> + * State set back to default mode once the timer completes. >> + * Ignore vbus changes here. >> + */ >> + break; >> + >> default: >> if (port->pwr_role == TYPEC_SINK && >> port->attached) >> -- >> 2.26.0.292.g33ef6b2f38-goog > > thanks, >
