[media] cx23885: add support for DVB I2C SEC client

Add support for I2C SEC (satellite equipment controller) client.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/pci/cx23885/cx23885-dvb.c

@@ -1190,6 +1190,7 @@ static int dvb_register(struct cx23885_tsport *port)
 	struct i2c_board_info info;
 	struct i2c_adapter *adapter;
 	struct i2c_client *client_demod = NULL, *client_tuner = NULL;
+	struct i2c_client *client_sec = NULL;
 	const struct m88ds3103_config *p_m88ds3103_config = NULL;
 	int (*p_set_voltage)(struct dvb_frontend *fe, fe_sec_voltage_t voltage) = NULL;
 	int mfe_shared = 0; /* bus not shared by default */
@@ -2242,6 +2243,14 @@ static int dvb_register(struct cx23885_tsport *port)
 	return 0;
 
 frontend_detach:
+	/* remove I2C client for SEC */
+	client_sec = port->i2c_client_sec;
+	if (client_sec) {
+		module_put(client_sec->dev.driver->owner);
+		i2c_unregister_device(client_sec);
+		port->i2c_client_sec = NULL;
+	}
+
 	/* remove I2C client for tuner */
 	client_tuner = port->i2c_client_tuner;
 	if (client_tuner) {
@@ -2343,6 +2352,13 @@ int cx23885_dvb_unregister(struct cx23885_tsport *port)
 		i2c_unregister_device(client);
 	}
 
+	/* remove I2C client for SEC */
+	client = port->i2c_client_sec;
+	if (client) {
+		module_put(client->dev.driver->owner);
+		i2c_unregister_device(client);
+	}
+
 	/* remove I2C client for tuner */
 	client = port->i2c_client_tuner;
 	if (client) {

drivers/media/pci/cx23885/cx23885.h

@@ -304,6 +304,7 @@ struct cx23885_tsport {
 
 	struct i2c_client *i2c_client_demod;
 	struct i2c_client *i2c_client_tuner;
+	struct i2c_client *i2c_client_sec;
 	struct i2c_client *i2c_client_ci;
 
 	int (*set_frontend)(struct dvb_frontend *fe);