diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2021-02-01 02:02:12 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-02 16:14:28 +0100 |
| commit | 7771bcc7f5a727d6e3f7a80b0b075a75cb664fb2 (patch) | |
| tree | b30c27ae324a0de666b830376d21b8a8802a52e8 /drivers/usb | |
| parent | 17aa02beecbcd35b28d37f5830d0531b01f672e3 (diff) | |
| download | linux-7771bcc7f5a727d6e3f7a80b0b075a75cb664fb2.tar.bz2 | |
usb: typec: tcpm: Handle vbus shutoff when in source mode
While in source mode, vbus could be shutoff by protections
circuits. TCPM does not move back to toggling state to
re-initiate connection. Fix this by moving to SRC_UNATTACHED
state when vbus shuts off while in source mode.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20210201100212.49863-1-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 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 0afd8ef692e8..ff0732c12b8a 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4897,6 +4897,17 @@ static void _tcpm_pd_vbus_off(struct tcpm_port *port) /* Do nothing, waiting for sink detection */ break; + case SRC_STARTUP: + case SRC_SEND_CAPABILITIES: + case SRC_SEND_CAPABILITIES_TIMEOUT: + case SRC_NEGOTIATE_CAPABILITIES: + case SRC_TRANSITION_SUPPLY: + case SRC_READY: + case SRC_WAIT_NEW_CAPABILITIES: + /* Force to unattached state to re-initiate connection */ + tcpm_set_state(port, SRC_UNATTACHED, 0); + break; + case PORT_RESET: /* * State set back to default mode once the timer completes. |