[media] fc0012: enable clock output on attach()

We need feed clock to slave demodulator at the very beginning
in case of dual tuner configuration.
I am not sure if that configuration changes clock output divider
or enable clock output itself...

Signed-off-by: Antti Palosaari <crope@iki.fi>
Acked-by: Hans-Frieder Vogt <hfvogt@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/media/tuners/fc0012.c b/drivers/media/tuners/fc0012.c
index 636f951219db..1a52b766360f 100644
--- a/drivers/media/tuners/fc0012.c
+++ b/drivers/media/tuners/fc0012.c
@@ -460,6 +460,13 @@ struct dvb_frontend *fc0012_attach(struct dvb_frontend *fe,
         if (priv->cfg->loop_through)
                 fc0012_writereg(priv, 0x09, 0x6f);
 
+        /*
+         * TODO: Clock out en or div?
+         * For dual tuner configuration clearing bit [0] is required.
+         */
+        if (priv->cfg->clock_out)
+                fc0012_writereg(priv, 0x0b, 0x82);
+
         memcpy(&fe->ops.tuner_ops, &fc0012_tuner_ops,
                 sizeof(struct dvb_tuner_ops));
 
diff --git a/drivers/media/tuners/fc0012.h b/drivers/media/tuners/fc0012.h
index 891d66d5af3b..83a98e732502 100644
--- a/drivers/media/tuners/fc0012.h
+++ b/drivers/media/tuners/fc0012.h
@@ -41,6 +41,11 @@ struct fc0012_config {
          * RF loop-through
          */
         bool loop_through;
+
+        /*
+         * clock output
+         */
+        bool clock_out;
 };
 
 #if defined(CONFIG_MEDIA_TUNER_FC0012) || \