[media] mt2031: remove fake implementaion of get_bandwidth()

This driver implements a fake get_bandwidth() callback. In
reallity, the tuner driver won't adjust its low-pass
filter based on a bandwidth, and were just providing a fake
method for demods to read whatever was "set".

This code is useless, as none of the drivers that use
this tuner seems to require a get_bandwidth() callback.

While here, convert set_params to use the DVBv5 way to pass
parameters to tuners.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/tuners/mt2131.c

@@ -95,6 +95,7 @@ static int mt2131_writeregs(struct mt2131_priv *priv,u8 *buf, u8 len)
 static int mt2131_set_params(struct dvb_frontend *fe,
 			     struct dvb_frontend_parameters *params)
 {
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	struct mt2131_priv *priv;
 	int ret=0, i;
 	u32 freq;
@@ -105,12 +106,8 @@ static int mt2131_set_params(struct dvb_frontend *fe,
 	u8 lockval = 0;
 
 	priv = fe->tuner_priv;
-	if (fe->ops.info.type == FE_OFDM)
-		priv->bandwidth = params->u.ofdm.bandwidth;
-	else
-		priv->bandwidth = 0;
 
-	freq = params->frequency / 1000;  // Hz -> kHz
+	freq = c->frequency / 1000;  /* Hz -> kHz */
 	dprintk(1, "%s() freq=%d\n", __func__, freq);
 
 	f_lo1 = freq + MT2131_IF1 * 1000;
@@ -193,14 +190,6 @@ static int mt2131_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 	return 0;
 }
 
-static int mt2131_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
-{
-	struct mt2131_priv *priv = fe->tuner_priv;
-	dprintk(1, "%s()\n", __func__);
-	*bandwidth = priv->bandwidth;
-	return 0;
-}
-
 static int mt2131_get_status(struct dvb_frontend *fe, u32 *status)
 {
 	struct mt2131_priv *priv = fe->tuner_priv;
@@ -263,7 +252,6 @@ static const struct dvb_tuner_ops mt2131_tuner_ops = {
 
 	.set_params    = mt2131_set_params,
 	.get_frequency = mt2131_get_frequency,
-	.get_bandwidth = mt2131_get_bandwidth,
 	.get_status    = mt2131_get_status
 };
 
@@ -281,7 +269,6 @@ struct dvb_frontend * mt2131_attach(struct dvb_frontend *fe,
 		return NULL;
 
 	priv->cfg = cfg;
-	priv->bandwidth = 6000000; /* 6MHz */
 	priv->i2c = i2c;
 
 	if (mt2131_readreg(priv, 0, &id) != 0) {

drivers/media/common/tuners/mt2131_priv.h

@@ -38,7 +38,6 @@ struct mt2131_priv {
 	struct i2c_adapter   *i2c;
 
 	u32 frequency;
-	u32 bandwidth;
 };
 
 #endif /* __MT2131_PRIV_H__ */