usb: typec: tcpci: Add set_vbus tcpci callback

set_vbus callback allows TCPC which are TCPCI based, however,
does not support turning on sink and source mode through
Command.SinkVbus and Command.SourceVbusDefaultVoltage.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20201008061556.1402293-3-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index b960fe5..d6a6fac 100644 (file)
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -328,6 +328,13 @@ static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink)
        struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
        int ret;
 
+       if (tcpci->data->set_vbus) {
+               ret = tcpci->data->set_vbus(tcpci, tcpci->data, source, sink);
+               /* Bypass when ret > 0 */
+               if (ret != 0)
+                       return ret < 0 ? ret : 0;
+       }
+
        /* Disable both source and sink first before enabling anything */
 
        if (!source) {

diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h
index 04c49a0..4d441bd 100644 (file)
--- a/drivers/usb/typec/tcpm/tcpci.h
+++ b/drivers/usb/typec/tcpm/tcpci.h
@@ -144,6 +144,7 @@ struct tcpci_data {
                         bool enable);
        int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
                                  enum typec_cc_status cc);
+       int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink);
 };
 
 struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);