From d0e20e13b715da83a9630916d283d63e9c514870 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 30 Jun 2016 00:34:59 -0300 Subject: [PATCH] [media] cxd2841er: Do some changes at the dvbv5 stats logic It is a good idea to measure the signal strength while tuning, as this helps to identify if the antenna is ok. Also, such measure helps to identify the quality of the signal. Do some changes to enable it before signal lock. While here, optimize the code to only initialize the stats length once, and make sure that, just after set_frontend, any reading for the stats that depends on lock to return FE_SCALE_NOT_AVAILABLE. Signed-off-by: Mauro Carvalho Chehab Acked-by: Abylay Ospan Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/cxd2841er.c | 45 ++++++++++++++++++++++++--------- 1 file changed, 33 insertions(+), 12 deletions(-) diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c index d369a75..c1b77a6 100644 --- a/drivers/media/dvb-frontends/cxd2841er.c +++ b/drivers/media/dvb-frontends/cxd2841er.c @@ -2936,31 +2936,25 @@ 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; + if (status & FE_HAS_LOCK) { - cxd2841er_read_signal_strength(fe, &strength); - p->strength.len = 1; - p->strength.stat[0].scale = FE_SCALE_RELATIVE; - p->strength.stat[0].uvalue = strength; cxd2841er_read_snr(fe, &snr); - p->cnr.len = 1; p->cnr.stat[0].scale = FE_SCALE_DECIBEL; p->cnr.stat[0].svalue = snr; + cxd2841er_read_ucblocks(fe, &errors); - p->block_error.len = 1; p->block_error.stat[0].scale = FE_SCALE_COUNTER; p->block_error.stat[0].uvalue = errors; + cxd2841er_read_ber(fe, &ber); - p->post_bit_error.len = 1; p->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; p->post_bit_error.stat[0].uvalue = ber; } else { - p->strength.len = 1; - p->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - p->cnr.len = 1; p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - p->block_error.len = 1; p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; - p->post_bit_error.len = 1; p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; } return 0; @@ -3021,6 +3015,12 @@ static int cxd2841er_set_frontend_s(struct dvb_frontend *fe) __func__, carr_offset); } done: + /* Reset stats */ + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + return ret; } @@ -3382,6 +3382,21 @@ static enum dvbfe_algo cxd2841er_get_algo(struct dvb_frontend *fe) return DVBFE_ALGO_HW; } +static void cxd2841er_init_stats(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + + p->strength.len = 1; + p->strength.stat[0].scale = FE_SCALE_RELATIVE; + p->cnr.len = 1; + p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->block_error.len = 1; + p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + p->post_bit_error.len = 1; + p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; +} + + static int cxd2841er_init_s(struct dvb_frontend *fe) { struct cxd2841er_priv *priv = fe->demodulator_priv; @@ -3403,6 +3418,9 @@ static int cxd2841er_init_s(struct dvb_frontend *fe) /* SONY_DEMOD_CONFIG_SAT_IFAGCNEG set to 1 */ cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0xa0); cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xb9, 0x01, 0x01); + + cxd2841er_init_stats(fe); + return 0; } @@ -3422,6 +3440,9 @@ static int cxd2841er_init_tc(struct dvb_frontend *fe) /* SONY_DEMOD_CONFIG_PARALLEL_SEL = 1 */ cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x00); cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4, 0x00, 0x80); + + cxd2841er_init_stats(fe); + return 0; } -- 2.7.4