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[media] cx24120: Add DVBv5 signal strength stats 

Add new get_stats function, called from read_status, for
collecting DVBv5 stats into the frontend cache. Only signal
strength for now, can add others later.
Not currently marked as available, future patch will enable.

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 2015-05-05 16:59:27 -03:00 committed by Mauro Carvalho Chehab
parent c84251bb12
commit 9fc18f18a5
1 changed files with 28 additions and 0 deletions
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28
drivers/media/dvb-frontends/cx24120.c
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@ -615,6 +615,32 @@ static int cx24120_send_diseqc_msg(struct dvb_frontend *fe,
return -ETIMEDOUT;
}
static void cx24120_get_stats(struct cx24120_state *state, fe_status_t status)
{
struct dvb_frontend *fe = &state->frontend;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
u16 u16tmp;
dev_dbg(&state->i2c->dev, "%s()\n", __func__);
/* signal strength */
if (status & FE_HAS_SIGNAL) {
ret = cx24120_read_signal_strength(fe, &u16tmp);
if (ret != 0)
return;
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
c->strength.stat[0].uvalue = u16tmp;
} else {
c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
/* FIXME: add CNR */
/* FIXME: add UCB/BER */
}
static void cx24120_set_clock_ratios(struct dvb_frontend *fe);
/* Read current tuning status */
@ -643,6 +669,8 @@ static int cx24120_read_status(struct dvb_frontend *fe, fe_status_t *status)
* Other cx241xx drivers have this slightly
* different */
cx24120_get_stats(state, *status);
/* Set the clock once tuned in */
if (state->need_clock_set && *status & FE_HAS_LOCK) {
/* Set clock ratios */