1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
index 2623a567ffba..728dc6d4561a 100644
--- a/drivers/hid/intel-ish-hid/ishtp/bus.c
+++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
@@ -149,6 +149,31 @@ int ishtp_fw_cl_by_uuid(struct ishtp_device *dev, const uuid_le *uuid)
 EXPORT_SYMBOL(ishtp_fw_cl_by_uuid);
 
 /**
+ * ishtp_fw_cl_get_client() - return client information to client
+ * @dev: the ishtp device structure
+ * @uuid: uuid of the client to search
+ *
+ * Search firmware client using UUID and reture related client information.
+ *
+ * Return: pointer of client information on success, NULL on failure.
+ */
+struct ishtp_fw_client *ishtp_fw_cl_get_client(struct ishtp_device *dev,
+						const uuid_le *uuid)
+{
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->fw_clients_lock, flags);
+	i = ishtp_fw_cl_by_uuid(dev, uuid);
+	spin_unlock_irqrestore(&dev->fw_clients_lock, flags);
+	if (i < 0 || dev->fw_clients[i].props.fixed_address)
+		return NULL;
+
+	return &dev->fw_clients[i];
+}
+EXPORT_SYMBOL(ishtp_fw_cl_get_client);
+
+/**
  * ishtp_fw_cl_by_id() - return index to fw_clients for client_id
  * @dev: the ishtp device structure
  * @client_id: fw client id to search
@@ -564,6 +589,33 @@ void ishtp_put_device(struct ishtp_cl_device *cl_device)
 EXPORT_SYMBOL(ishtp_put_device);
 
 /**
+ * ishtp_set_drvdata() - set client driver data
+ * @cl_device:	client device instance
+ * @data:	driver data need to be set
+ *
+ * Set client driver data to cl_device->driver_data.
+ */
+void ishtp_set_drvdata(struct ishtp_cl_device *cl_device, void *data)
+{
+	cl_device->driver_data = data;
+}
+EXPORT_SYMBOL(ishtp_set_drvdata);
+
+/**
+ * ishtp_get_drvdata() - get client driver data
+ * @cl_device:	client device instance
+ *
+ * Get client driver data from cl_device->driver_data.
+ *
+ * Return: pointer of driver data
+ */
+void *ishtp_get_drvdata(struct ishtp_cl_device *cl_device)
+{
+	return cl_device->driver_data;
+}
+EXPORT_SYMBOL(ishtp_get_drvdata);
+
+/**
  * ishtp_bus_new_client() - Create a new client
  * @dev:	ISHTP device instance
  *