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path: root/drivers/media/dvb-frontends/rtl2832.c
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Diffstat (limited to 'drivers/media/dvb-frontends/rtl2832.c')
-rw-r--r--drivers/media/dvb-frontends/rtl2832.c76
1 files changed, 59 insertions, 17 deletions
diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 73887690b046..b6f50c7a15e6 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -432,22 +432,12 @@ 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 +462,10 @@ 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 +477,43 @@ 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 (ret)
- goto err;
+ /*
+ * if frequency settings
+ * Some tuners (r820t) don't initialize IF here; instead; they do it
+ * at set_params()
+ */
+ if (!fe->ops.tuner_ops.get_if_frequency) {
+ /*
+ * 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;
+ ret = rtl2832_wr_demod_reg(priv, DVBT_EN_BBIN, en_bbin);
+ if (ret)
+ goto err;
+
+ ret = rtl2832_wr_demod_reg(priv, DVBT_PSET_IFFREQ, pset_iffreq);
+ 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 +587,25 @@ 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;
+ u64 pset_iffreq;
+
+ ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
+ if (ret)
+ goto err;
+
+ pset_iffreq = if_freq % priv->cfg.xtal;
+ pset_iffreq *= 0x400000;
+ pset_iffreq = div_u64(pset_iffreq, priv->cfg.xtal);
+ pset_iffreq = pset_iffreq & 0x3fffff;
+
+ ret = rtl2832_wr_demod_reg(priv, DVBT_PSET_IFFREQ, pset_iffreq);
+ if (ret)
+ goto err;
+ }
+
switch (c->bandwidth_hz) {
case 6000000:
i = 0;

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