V4L/DVB (3984): Fix CI interface on KNC1 DVBT and DVBC cards

These cards need special handling for CI - reinitialising the frontend
device when the CI module is reset. Additionally the tda10021 needs to be set
into a different transport stream mode when a CI module is present.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 10 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/tda10021.c b/drivers/media/dvb/frontends/tda10021.c
index 12e0ec27cb3c..c42997917191 100644
--- a/drivers/media/dvb/frontends/tda10021.c
+++ b/drivers/media/dvb/frontends/tda10021.c
@@ -90,6 +90,14 @@ static int tda10021_writereg (struct tda10021_state* state, u8 reg, u8 data)
         return (ret != 1) ? -EREMOTEIO : 0;
 }
 
+int tda10021_write_byte(struct dvb_frontend* fe, int reg, int data)
+{
+        struct tda10021_state* state = fe->demodulator_priv;
+
+        return tda10021_writereg(state, reg, data);
+}
+EXPORT_SYMBOL(tda10021_write_byte);
+
 static u8 tda10021_readreg (struct tda10021_state* state, u8 reg)
 {
         u8 b0 [] = { reg };
diff --git a/drivers/media/dvb/frontends/tda10021.h b/drivers/media/dvb/frontends/tda10021.h
index 3fc338e0ec4f..b1df4259bee9 100644
--- a/drivers/media/dvb/frontends/tda10021.h
+++ b/drivers/media/dvb/frontends/tda10021.h
@@ -35,4 +35,6 @@ struct tda10021_config
 extern struct dvb_frontend* tda10021_attach(const struct tda10021_config* config,
                                             struct i2c_adapter* i2c, u8 pwm);
 
+extern int tda10021_write_byte(struct dvb_frontend* fe, int reg, int data);
+
 #endif // TDA10021_H