usb: typec: Update sysfs when setting ops

When adding altmode ops, update the sysfs group so that visibility is
also recalculated.

Reviewed-by: Heikki Krogerus <[e-mail]>
Reviewed-by: Benson Leung <[e-mail]>
Signed-off-by: Abhishek Pandit-Subedi <[e-mail]>
Signed-off-by: Jameson Thies <[e-mail]>
Reviewed-by: Dmitry Baryshkov <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/typec/altmodes/displayport.c

···
 	dp->alt = alt;
 
 	alt->desc = "DisplayPort";
-	alt->ops = &dp_altmode_ops;
+	typec_altmode_set_ops(alt, &dp_altmode_ops);
 
 	if (plug) {
 		plug->desc = "Displayport";

drivers/usb/typec/class.c

···
 	NULL
 };
 
+/**
+ * typec_altmode_set_ops - Set ops for altmode
+ * @adev: Handle to the alternate mode
+ * @ops: Ops for the alternate mode
+ *
+ * After setting ops, attribute visiblity needs to be refreshed if the alternate
+ * mode can be activated.
+ */
+void typec_altmode_set_ops(struct typec_altmode *adev,
+			   const struct typec_altmode_ops *ops)
+{
+	adev->ops = ops;
+	sysfs_update_group(&adev->dev.kobj, &typec_altmode_group);
+}
+EXPORT_SYMBOL_GPL(typec_altmode_set_ops);
+
 static int altmode_id_get(struct device *dev)
 {
 	struct ida *ids;
···
 			continue;
 		}
 
-		alt->ops = ops;
+		typec_altmode_set_ops(alt, ops);
 		typec_altmode_set_drvdata(alt, drvdata);
 		altmodes[index] = alt;
 		index++;

drivers/usb/typec/ucsi/displayport.c

···
 	dp->con = con;
 	dp->alt = alt;
 
-	alt->ops = &ucsi_displayport_ops;
+	typec_altmode_set_ops(alt, &ucsi_displayport_ops);
 	typec_altmode_set_drvdata(alt, dp);
 
 	return alt;

include/linux/usb/typec.h

···
 
 void typec_altmode_update_active(struct typec_altmode *alt, bool active);
 
+void typec_altmode_set_ops(struct typec_altmode *alt,
+			   const struct typec_altmode_ops *ops);
+
 enum typec_plug_index {
 	TYPEC_PLUG_SOP_P,
 	TYPEC_PLUG_SOP_PP,