1 files changed, 65 insertions, 20 deletions

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 73887690b04..facb8484151 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -380,13 +380,41 @@ err:
 	return ret;
 }
 
-static int rtl2832_init(struct dvb_frontend *fe)
+
+static int rtl2832_set_if(struct dvb_frontend *fe, u32 if_freq)
 {
 	struct rtl2832_priv *priv = fe->demodulator_priv;
-	int i, ret, len;
-	u8 en_bbin;
+	int ret;
 	u64 pset_iffreq;
+	u8 en_bbin = (if_freq == 0 ? 0x1 : 0x0);
+
+	/*
+	* PSET_IFFREQ = - floor((IfFreqHz % CrystalFreqHz) * pow(2, 22)
+	*		/ CrystalFreqHz)
+	*/
+
+	pset_iffreq = if_freq % priv->cfg.xtal;
+	pset_iffreq *= 0x400000;
+	pset_iffreq = div_u64(pset_iffreq, priv->cfg.xtal);
+	pset_iffreq = -pset_iffreq;
+	pset_iffreq = pset_iffreq & 0x3fffff;
+	dev_dbg(&priv->i2c->dev, "%s: if_frequency=%d pset_iffreq=%08x\n",
+			__func__, if_freq, (unsigned)pset_iffreq);
+
+	ret = rtl2832_wr_demod_reg(priv, DVBT_EN_BBIN, en_bbin);
+	if (ret)
+		return ret;
+
+	ret = rtl2832_wr_demod_reg(priv, DVBT_PSET_IFFREQ, pset_iffreq);
+
+	return (ret);
+}
+
+static int rtl2832_init(struct dvb_frontend *fe)
+{
+	struct rtl2832_priv *priv = fe->demodulator_priv;
 	const struct rtl2832_reg_value *init;
+	int i, ret, len;
 
 	/* initialization values for the demodulator registers */
 	struct rtl2832_reg_value rtl2832_initial_regs[] = {
@@ -432,22 +460,10 @@ static int rtl2832_init(struct dvb_frontend *fe)
 		{DVBT_TR_THD_SET2,		0x6},
 		{DVBT_TRK_KC_I2,		0x5},
 		{DVBT_CR_THD_SET2,		0x1},
-		{DVBT_SPEC_INV,			0x0},
 	};
 
 	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
 
-	en_bbin = (priv->cfg.if_dvbt == 0 ? 0x1 : 0x0);
-
-	/*
-	* PSET_IFFREQ = - floor((IfFreqHz % CrystalFreqHz) * pow(2, 22)
-	*		/ CrystalFreqHz)
-	*/
-	pset_iffreq = priv->cfg.if_dvbt % priv->cfg.xtal;
-	pset_iffreq *= 0x400000;
-	pset_iffreq = div_u64(pset_iffreq, priv->cfg.xtal);
-	pset_iffreq = pset_iffreq & 0x3fffff;
-
 	for (i = 0; i < ARRAY_SIZE(rtl2832_initial_regs); i++) {
 		ret = rtl2832_wr_demod_reg(priv, rtl2832_initial_regs[i].reg,
 			rtl2832_initial_regs[i].value);
@@ -472,6 +488,10 @@ static int rtl2832_init(struct dvb_frontend *fe)
 		len = ARRAY_SIZE(rtl2832_tuner_init_e4000);
 		init = rtl2832_tuner_init_e4000;
 		break;
+	case RTL2832_TUNER_R820T:
+		len = ARRAY_SIZE(rtl2832_tuner_init_r820t);
+		init = rtl2832_tuner_init_r820t;
+		break;
 	default:
 		ret = -EINVAL;
 		goto err;
@@ -483,14 +503,26 @@ static int rtl2832_init(struct dvb_frontend *fe)
 			goto err;
 	}
 
-	/* if frequency settings */
-	ret = rtl2832_wr_demod_reg(priv, DVBT_EN_BBIN, en_bbin);
+	if (!fe->ops.tuner_ops.get_if_frequency) {
+		ret = rtl2832_set_if(fe, priv->cfg.if_dvbt);
 		if (ret)
 			goto err;
+	}
 
-	ret = rtl2832_wr_demod_reg(priv, DVBT_PSET_IFFREQ, pset_iffreq);
-		if (ret)
-			goto err;
+	/*
+	 * r820t NIM code does a software reset here at the demod -
+	 * may not be needed, as there's already a software reset at set_params()
+	 */
+#if 1
+	/* soft reset */
+	ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x1);
+	if (ret)
+		goto err;
+
+	ret = rtl2832_wr_demod_reg(priv, DVBT_SOFT_RST, 0x0);
+	if (ret)
+		goto err;
+#endif
 
 	priv->sleeping = false;
 
@@ -564,6 +596,19 @@ static int rtl2832_set_frontend(struct dvb_frontend *fe)
 	if (fe->ops.tuner_ops.set_params)
 		fe->ops.tuner_ops.set_params(fe);
 
+	/* If the frontend has get_if_frequency(), use it */
+	if (fe->ops.tuner_ops.get_if_frequency) {
+		u32 if_freq;
+
+		ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
+		if (ret)
+			goto err;
+
+		ret = rtl2832_set_if(fe, if_freq);
+		if (ret)
+			goto err;
+	}
+
 	switch (c->bandwidth_hz) {
 	case 6000000:
 		i = 0;