[media] tua9001: enter full power save on attach

Disable RXEN and enable RESETN pins on attach to ensure chip is
totally powered down after attach.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c
index e6394fc884b0..389668474070 100644
--- a/drivers/media/tuners/tua9001.c
+++ b/drivers/media/tuners/tua9001.c
@@ -261,6 +261,16 @@ struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
                                 TUA9001_CMD_CEN, 1);
                 if (ret < 0)
                         goto err;
+
+                ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+                                TUA9001_CMD_RXEN, 0);
+                if (ret < 0)
+                        goto err;
+
+                ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+                                TUA9001_CMD_RESETN, 1);
+                if (ret < 0)
+                        goto err;
         }
 
         dev_info(&priv->i2c->dev,