diff options
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2841er.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c index c1b77a6268d4..c960e8a725cc 100644 --- a/drivers/media/dvb-frontends/cxd2841er.c +++ b/drivers/media/dvb-frontends/cxd2841er.c @@ -1727,32 +1727,39 @@ static int cxd2841er_read_ber(struct dvb_frontend *fe, u32 *ber) return 0; } -static int cxd2841er_read_signal_strength(struct dvb_frontend *fe, - u16 *strength) +static void cxd2841er_read_signal_strength(struct dvb_frontend *fe) { struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct cxd2841er_priv *priv = fe->demodulator_priv; + u32 strength; dev_dbg(&priv->i2c->dev, "%s()\n", __func__); switch (p->delivery_system) { case SYS_DVBT: case SYS_DVBT2: - *strength = 65535 - cxd2841er_read_agc_gain_t_t2( - priv, p->delivery_system); - break; + strength = cxd2841er_read_agc_gain_t_t2(priv, + p->delivery_system); + p->strength.stat[0].scale = FE_SCALE_DECIBEL; + /* Formula was empirically determinated @ 410 MHz */ + p->strength.stat[0].uvalue = ((s32)strength) * 366 / 100 - 89520; + break; /* Code moved out of the function */ case SYS_ISDBT: - *strength = 65535 - cxd2841er_read_agc_gain_i( + strength = 65535 - cxd2841er_read_agc_gain_i( priv, p->delivery_system); + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->strength.stat[0].uvalue = strength; break; case SYS_DVBS: case SYS_DVBS2: - *strength = 65535 - cxd2841er_read_agc_gain_s(priv); + strength = 65535 - cxd2841er_read_agc_gain_s(priv); + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->strength.stat[0].uvalue = strength; break; default: - *strength = 0; + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->strength.stat[0].uvalue = 0; break; } - return 0; } static int cxd2841er_read_snr(struct dvb_frontend *fe, u16 *snr) @@ -2926,7 +2933,7 @@ static int cxd2841er_get_frontend(struct dvb_frontend *fe, struct dtv_frontend_properties *p) { enum fe_status status = 0; - u16 strength = 0, snr = 0; + u16 snr = 0; u32 errors = 0, ber = 0; struct cxd2841er_priv *priv = fe->demodulator_priv; @@ -2936,9 +2943,7 @@ static int cxd2841er_get_frontend(struct dvb_frontend *fe, else if (priv->state == STATE_ACTIVE_TC) cxd2841er_read_status_tc(fe, &status); - cxd2841er_read_signal_strength(fe, &strength); - p->strength.stat[0].scale = FE_SCALE_RELATIVE; - p->strength.stat[0].uvalue = strength; + cxd2841er_read_signal_strength(fe); if (status & FE_HAS_LOCK) { cxd2841er_read_snr(fe, &snr); |