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| author | Badhri Jagan Sridharan <badhri@google.com> | 2021-05-17 12:21:09 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-21 20:05:56 +0200 |
| commit | d112efbe6dbf7d4c482e2a3f381fa315aabfe63b (patch) | |
| tree | fb1f9384d89826dcf9d49dd62ea442a4331e586e /drivers/usb/typec/tcpm | |
| parent | 56d426146cdfa08dc56cda0d0897af4e5090ffcf (diff) | |
| download | linux-d112efbe6dbf7d4c482e2a3f381fa315aabfe63b.tar.bz2 | |
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 <linux@roeck-us.net>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20210517192112.40934-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec/tcpm')
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 64133e586c64..0be7559abb5a 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); |