diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2021-02-02 03:30:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-02 19:38:05 +0300 |
| commit | a69bdb283f79949b67632878ef1822badae9299f (patch) | |
| tree | c0cf8560d17333143295bb7dd2d5cac6d5b557dc /include/linux/usb | |
| parent | 2b8ff93fd7443d7bd4c085ac0249d87238c755ba (diff) | |
| download | linux-a69bdb283f79949b67632878ef1822badae9299f.tar.xz | |
usb: typec: tcpm: Add Callback to Usb Communication capable partner
The USB Communications Capable bit indicates if port
partner is capable of communication over the USB data lines
(e.g. D+/- or SS Tx/Rx). Notify the status of the bit to low
level drivers to perform chip specific operation.
For instance, low level driver enables USB switches on D+/D-
lines to set up data path when the bit is set.
Refactored from patch initially authored by
Kyle Tso <kyletso@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20210202003101.221145-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/tcpm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index 3af99f85e8b9..42fcfbe10590 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -108,6 +108,10 @@ enum tcpm_transmit_type { * is supported by TCPC, set this callback for TCPM to query * whether vbus is at VSAFE0V when needed. * Returns true when vbus is at VSAFE0V, false otherwise. + * @set_partner_usb_comm_capable: + * Optional; The USB Communications Capable bit indicates if port + * partner is capable of communication over the USB data lines + * (e.g. D+/- or SS Tx/Rx). Called to notify the status of the bit. */ struct tcpc_dev { struct fwnode_handle *fwnode; @@ -139,6 +143,7 @@ struct tcpc_dev { int (*set_auto_vbus_discharge_threshold)(struct tcpc_dev *dev, enum typec_pwr_opmode mode, bool pps_active, u32 requested_vbus_voltage); bool (*is_vbus_vsafe0v)(struct tcpc_dev *dev); + void (*set_partner_usb_comm_capable)(struct tcpc_dev *dev, bool enable); }; struct tcpm_port; |