usb: typec: Introduce typec_get_drvdata()

Leaving the private driver_data pointer of the port device
to the port drivers.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20191104142435.29960-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 7749933..5115463 100644 (file)
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1489,6 +1489,16 @@ EXPORT_SYMBOL_GPL(typec_set_mode);
 /* --------------------------------------- */
 
 /**
+ * typec_get_drvdata - Return private driver data pointer
+ * @port: USB Type-C port
+ */
+void *typec_get_drvdata(struct typec_port *port)
+{
+       return dev_get_drvdata(&port->dev);
+}
+EXPORT_SYMBOL_GPL(typec_get_drvdata);
+
+/**
  * typec_port_register_altmode - Register USB Type-C Port Alternate Mode
  * @port: USB Type-C Port that supports the alternate mode
  * @desc: Description of the alternate mode
@@ -1591,6 +1601,7 @@ struct typec_port *typec_register_port(struct device *parent,
        port->dev.fwnode = cap->fwnode;
        port->dev.type = &typec_port_dev_type;
        dev_set_name(&port->dev, "port%d", id);
+       dev_set_drvdata(&port->dev, cap->driver_data);
 
        port->cap = kmemdup(cap, sizeof(*cap), GFP_KERNEL);
        if (!port->cap) {

diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index 7df4eca..8b90cd7 100644 (file)
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -179,6 +179,7 @@ struct typec_partner_desc {
  * @sw: Cable plug orientation switch
  * @mux: Multiplexer switch for Alternate/Accessory Modes
  * @fwnode: Optional fwnode of the port
+ * @driver_data: Private pointer for driver specific info
  * @try_role: Set data role preference for DRP port
  * @dr_set: Set Data Role
  * @pr_set: Set Power Role
@@ -198,6 +199,7 @@ struct typec_capability {
        struct typec_switch     *sw;
        struct typec_mux        *mux;
        struct fwnode_handle    *fwnode;
+       void                    *driver_data;
 
        int             (*try_role)(const struct typec_capability *,
                                    int role);
@@ -241,6 +243,8 @@ int typec_set_orientation(struct typec_port *port,
 enum typec_orientation typec_get_orientation(struct typec_port *port);
 int typec_set_mode(struct typec_port *port, int mode);
 
+void *typec_get_drvdata(struct typec_port *port);
+
 int typec_find_port_power_role(const char *name);
 int typec_find_power_role(const char *name);
 int typec_find_port_data_role(const char *name);