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[media] cx24120: Move CNR to DVBv5 stats

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Better to report CNR via DVBv5 stats, as scale can be used.

Signed-off-by: Jemma Denson <jdenson@gmail.com>
Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Jemma Denson 2015-05-08 15:52:45 -03:00 committed by Mauro Carvalho Chehab
parent 7c95e25e38
commit 3b5eb504fe
1 changed files with 23 additions and 6 deletions
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29
drivers/media/dvb-frontends/cx24120.c
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@ -320,11 +320,12 @@ static int cx24120_test_rom(struct cx24120_state *state)
static int cx24120_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct cx24120_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
*snr = (cx24120_readreg(state, CX24120_REG_QUALITY_H) << 8) |
(cx24120_readreg(state, CX24120_REG_QUALITY_L));
dev_dbg(&state->i2c->dev, "%s: read SNR index = %d\n", __func__, *snr);
if (c->cnr.stat[0].scale != FE_SCALE_DECIBEL)
*snr = 0;
else
*snr = div_s64(c->cnr.stat[0].svalue, 100);
return 0;
}
@ -609,7 +610,7 @@ static void cx24120_get_stats(struct cx24120_state *state)
struct dvb_frontend *fe = &state->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct cx24120_cmd cmd;
int ret;
int ret, cnr;
u16 sig;
dev_dbg(&state->i2c->dev, "%s()\n", __func__);
@ -643,7 +644,21 @@ static void cx24120_get_stats(struct cx24120_state *state)
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* FIXME: add CNR */
/* CNR */
if (state->fe_status & FE_HAS_VITERBI) {
cnr = cx24120_readreg(state, CX24120_REG_QUALITY_H) << 8;
cnr |= cx24120_readreg(state, CX24120_REG_QUALITY_L);
dev_dbg(&state->i2c->dev, "%s: read SNR index = %d\n",
__func__, cnr);
/* guessed - seems about right */
cnr = cnr * 100;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = cnr;
} else {
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* FIXME: add UCB/BER */
}
@ -1377,6 +1392,8 @@ int cx24120_init(struct dvb_frontend *fe)
/* init stats here in order signal app which stats are supported */
c->strength.len = 1;
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->cnr.len = 1;
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
state->cold_init = 1;
return 0;