diff options
Diffstat (limited to 'drivers/usb/typec/class.c')
| -rw-r--r-- | drivers/usb/typec/class.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 91d62276b56f..7c44e930602f 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -834,6 +834,52 @@ static const struct device_type typec_cable_dev_type = { .release = typec_cable_release, }; +static int cable_match(struct device *dev, void *data) +{ + return is_typec_cable(dev); +} + +/** + * typec_cable_get - Get a reference to the USB Type-C cable + * @port: The USB Type-C Port the cable is connected to + * + * The caller must decrement the reference count with typec_cable_put() after + * use. + */ +struct typec_cable *typec_cable_get(struct typec_port *port) +{ + struct device *dev; + + dev = device_find_child(&port->dev, NULL, cable_match); + if (!dev) + return NULL; + + return to_typec_cable(dev); +} +EXPORT_SYMBOL_GPL(typec_cable_get); + +/** + * typec_cable_get - Decrement the reference count on USB Type-C cable + * @cable: The USB Type-C cable + */ +void typec_cable_put(struct typec_cable *cable) +{ + put_device(&cable->dev); +} +EXPORT_SYMBOL_GPL(typec_cable_put); + +/** + * typec_cable_is_active - Check is the USB Type-C cable active or passive + * @cable: The USB Type-C Cable + * + * Return 1 if the cable is active or 0 if it's passive. + */ +int typec_cable_is_active(struct typec_cable *cable) +{ + return cable->active; +} +EXPORT_SYMBOL_GPL(typec_cable_is_active); + /** * typec_cable_set_identity - Report result from Discover Identity command * @cable: The cable updated identity values @@ -1483,7 +1529,11 @@ EXPORT_SYMBOL_GPL(typec_get_orientation); */ int typec_set_mode(struct typec_port *port, int mode) { - return port->mux ? port->mux->set(port->mux, mode) : 0; + struct typec_mux_state state = { }; + + state.mode = mode; + + return port->mux ? port->mux->set(port->mux, &state) : 0; } EXPORT_SYMBOL_GPL(typec_set_mode); |