HSI: export method to (un)register clients

Expose method for registering and unregistering HSI clients, so that
client drivers can register other client drivers.

This is useful for HSI drivers, which want to use the functionality
of other HSI drivers. For example the N900 modem driver can load HSI
drivers for mcsaab protocol and speech protocol.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h
index e3cff94bef04..e20a3999a696 100644
--- a/include/linux/hsi/hsi.h
+++ b/include/linux/hsi/hsi.h
@@ -296,6 +296,9 @@ struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags);
 void hsi_put_controller(struct hsi_controller *hsi);
 int hsi_register_controller(struct hsi_controller *hsi);
 void hsi_unregister_controller(struct hsi_controller *hsi);
+struct hsi_client *hsi_new_client(struct hsi_port *port,
+                                                struct hsi_board_info *info);
+int hsi_remove_client(struct device *dev, void *data);
 void hsi_port_unregister_clients(struct hsi_port *port);
 
 static inline void hsi_controller_set_drvdata(struct hsi_controller *hsi,