diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2023-07-12 08:57:22 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-04 14:54:26 +0200 |
| commit | 4270d2b4845e820b274702bfc2a7140f69e4d19d (patch) | |
| tree | 1389fc2a8325fb4afba7c95b1888049bd6a0cb67 /drivers/usb | |
| parent | 5d0c230f1de8c7515b6567d9afba1f196fb4e2f4 (diff) | |
usb: typec: tcpm: Fix response to vsafe0V event
Do not transition to SNK_UNATTACHED state when receiving vsafe0v event
while in SNK_HARD_RESET_WAIT_VBUS. Ignore VBUS off events as well as
in some platforms VBUS off can be signalled more than once.
[143515.364753] Requesting mux state 1, usb-role 2, orientation 2
[143515.365520] pending state change SNK_HARD_RESET_SINK_OFF -> SNK_HARD_RESET_SINK_ON @ 650 ms [rev3 HARD_RESET]
[143515.632281] CC1: 0 -> 0, CC2: 3 -> 0 [state SNK_HARD_RESET_SINK_OFF, polarity 1, disconnected]
[143515.637214] VBUS on
[143515.664985] VBUS off
[143515.664992] state change SNK_HARD_RESET_SINK_OFF -> SNK_HARD_RESET_WAIT_VBUS [rev3 HARD_RESET]
[143515.665564] VBUS VSAFE0V
[143515.665566] state change SNK_HARD_RESET_WAIT_VBUS -> SNK_UNATTACHED [rev3 HARD_RESET]
Fixes: 28b43d3d746b ("usb: typec: tcpm: Introduce vsafe0v for vbus")
Cc: <stable@vger.kernel.org>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230712085722.1414743-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 829d75ebab42..cc1d83926497 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -5349,6 +5349,10 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) /* Do nothing, vbus drop expected */ break; + case SNK_HARD_RESET_WAIT_VBUS: + /* Do nothing, its OK to receive vbus off events */ + break; + default: if (port->pwr_role == TYPEC_SINK && port->attached) tcpm_set_state(port, SNK_UNATTACHED, tcpm_wait_for_discharge(port)); @@ -5395,6 +5399,9 @@ static void _tcpm_pd_vbus_vsafe0v(struct tcpm_port *port) case SNK_DEBOUNCED: /*Do nothing, still waiting for VSAFE5V for connect */ break; + case SNK_HARD_RESET_WAIT_VBUS: + /* Do nothing, its OK to receive vbus off events */ + break; default: if (port->pwr_role == TYPEC_SINK && port->auto_vbus_discharge_enabled) tcpm_set_state(port, SNK_UNATTACHED, 0); |