V4L/DVB (7028): tda18271: test RF_CAL_OK to see if we need additional RF calibration

Test RF_CAL_OK to see if we need to perform the RF tracking filter
calibration after returning from standby.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index c8ab1fda1dea..8eb9a537970a 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -586,6 +586,11 @@ static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 static int tda18271_rf_cal_init(struct dvb_frontend *fe)
 {
         struct tda18271_priv *priv = fe->tuner_priv;
+        unsigned char *regs = priv->tda18271_regs;
+
+        /* test RF_CAL_OK to see if we need init */
+        if ((regs[R_EP1] & 0x10) == 0)
+                priv->cal_initialized = false;
 
         if (priv->cal_initialized)
                 return 0;