diff options
Diffstat (limited to 'drivers/media/dvb-frontends')
| -rw-r--r-- | drivers/media/dvb-frontends/rtl2832.c | 85 | ||||
| -rw-r--r-- | drivers/media/dvb-frontends/rtl2832.h | 1 | ||||
| -rw-r--r-- | drivers/media/dvb-frontends/rtl2832_priv.h | 28 |
3 files changed, 94 insertions, 20 deletions
diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c index 7388769..facb848 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; diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h index fefba0e..91b2dcf 100644 --- a/drivers/media/dvb-frontends/rtl2832.h +++ b/drivers/media/dvb-frontends/rtl2832.h @@ -52,6 +52,7 @@ struct rtl2832_config { #define RTL2832_TUNER_FC0012 0x26 #define RTL2832_TUNER_E4000 0x27 #define RTL2832_TUNER_FC0013 0x29 +#define RTL2832_TUNER_R820T 0x2a u8 tuner; }; diff --git a/drivers/media/dvb-frontends/rtl2832_priv.h b/drivers/media/dvb-frontends/rtl2832_priv.h index 7d97ce9..b5f2b80 100644 --- a/drivers/media/dvb-frontends/rtl2832_priv.h +++ b/drivers/media/dvb-frontends/rtl2832_priv.h @@ -267,6 +267,7 @@ static const struct rtl2832_reg_value rtl2832_tuner_init_tua9001[] = { {DVBT_OPT_ADC_IQ, 0x1}, {DVBT_AD_AVI, 0x0}, {DVBT_AD_AVQ, 0x0}, + {DVBT_SPEC_INV, 0x0}, }; static const struct rtl2832_reg_value rtl2832_tuner_init_fc0012[] = { @@ -300,6 +301,7 @@ static const struct rtl2832_reg_value rtl2832_tuner_init_fc0012[] = { {DVBT_GI_PGA_STATE, 0x0}, {DVBT_EN_AGC_PGA, 0x1}, {DVBT_IF_AGC_MAN, 0x0}, + {DVBT_SPEC_INV, 0x0}, }; static const struct rtl2832_reg_value rtl2832_tuner_init_e4000[] = { @@ -337,6 +339,32 @@ static const struct rtl2832_reg_value rtl2832_tuner_init_e4000[] = { {DVBT_REG_MONSEL, 0x1}, {DVBT_REG_MON, 0x1}, {DVBT_REG_4MSEL, 0x0}, + {DVBT_SPEC_INV, 0x0}, +}; + +static const struct rtl2832_reg_value rtl2832_tuner_init_r820t[] = { + {DVBT_DAGC_TRG_VAL, 0x39}, + {DVBT_AGC_TARG_VAL_0, 0x0}, + {DVBT_AGC_TARG_VAL_8_1, 0x40}, + {DVBT_AAGC_LOOP_GAIN, 0x16}, + {DVBT_LOOP_GAIN2_3_0, 0x8}, + {DVBT_LOOP_GAIN2_4, 0x1}, + {DVBT_LOOP_GAIN3, 0x18}, + {DVBT_VTOP1, 0x35}, + {DVBT_VTOP2, 0x21}, + {DVBT_VTOP3, 0x21}, + {DVBT_KRF1, 0x0}, + {DVBT_KRF2, 0x40}, + {DVBT_KRF3, 0x10}, + {DVBT_KRF4, 0x10}, + {DVBT_IF_AGC_MIN, 0x80}, + {DVBT_IF_AGC_MAX, 0x7f}, + {DVBT_RF_AGC_MIN, 0x80}, + {DVBT_RF_AGC_MAX, 0x7f}, + {DVBT_POLAR_RF_AGC, 0x0}, + {DVBT_POLAR_IF_AGC, 0x0}, + {DVBT_AD7_SETTING, 0xe9f4}, + {DVBT_SPEC_INV, 0x1}, }; #endif /* RTL2832_PRIV_H */ |