From d112efbe6dbf7d4c482e2a3f381fa315aabfe63b Mon Sep 17 00:00:00 2001 From: Badhri Jagan Sridharan Date: Mon, 17 May 2021 12:21:09 -0700 Subject: [PATCH] usb: typec: tcpm: Fix up PR_SWAP when vsafe0v is signalled During PR_SWAP, When TCPM is in PR_SWAP_SNK_SRC_SINK_OFF, vbus is expected to reach VSAFE0V when source turns off vbus. Do not move to SNK_UNATTACHED state when this happens. Fixes: 28b43d3d746b ("usb: typec: tcpm: Introduce vsafe0v for vbus") Reviewed-by: Guenter Roeck Acked-by: Heikki Krogerus Signed-off-by: Badhri Jagan Sridharan Link: https://lore.kernel.org/r/20210517192112.40934-1-badhri@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/tcpm/tcpm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 64133e5..0be7559 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -5155,6 +5155,9 @@ static void _tcpm_pd_vbus_vsafe0v(struct tcpm_port *port) tcpm_set_state(port, SNK_UNATTACHED, 0); } break; + case PR_SWAP_SNK_SRC_SINK_OFF: + /* Do nothing, vsafe0v is expected during transition */ + break; default: if (port->pwr_role == TYPEC_SINK && port->auto_vbus_discharge_enabled) tcpm_set_state(port, SNK_UNATTACHED, 0); -- 2.7.4