[media] tda18218: implement .get_if_frequency()

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

drivers/media/common/tuners/tda18218.c

@@ -141,19 +141,21 @@ static int tda18218_set_params(struct dvb_frontend *fe,
 	switch (params->u.ofdm.bandwidth) {
 	case BANDWIDTH_6_MHZ:
 		LP_Fc = 0;
-		LO_Frac = params->frequency + 4000000;
+		priv->if_frequency = 4000000;
 		break;
 	case BANDWIDTH_7_MHZ:
 		LP_Fc = 1;
-		LO_Frac = params->frequency + 3500000;
+		priv->if_frequency = 3500000;
 		break;
 	case BANDWIDTH_8_MHZ:
 	default:
 		LP_Fc = 2;
-		LO_Frac = params->frequency + 4000000;
+		priv->if_frequency = 4000000;
 		break;
 	}
 
+	LO_Frac = params->frequency + priv->if_frequency;
+
 	/* band-pass filter */
 	if (LO_Frac < 188000000)
 		BP_Filter = 3;
@@ -206,6 +208,14 @@ error:
 	return ret;
 }
 
+static int tda18218_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct tda18218_priv *priv = fe->tuner_priv;
+	*frequency = priv->if_frequency;
+	dbg("%s: if=%d", __func__, *frequency);
+	return 0;
+}
+
 static int tda18218_sleep(struct dvb_frontend *fe)
 {
 	struct tda18218_priv *priv = fe->tuner_priv;
@@ -268,6 +278,8 @@ static const struct dvb_tuner_ops tda18218_tuner_ops = {
 	.sleep         = tda18218_sleep,
 
 	.set_params    = tda18218_set_params,
+
+	.get_if_frequency = tda18218_get_if_frequency,
 };
 
 struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,

drivers/media/common/tuners/tda18218_priv.h

@@ -100,6 +100,8 @@ struct tda18218_priv {
 	struct tda18218_config *cfg;
 	struct i2c_adapter *i2c;
 
+	u32 if_frequency;
+
 	u8 regs[TDA18218_NUM_REGS];
 };