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Commit 9fc18f18 authored by Jemma Denson's avatar Jemma Denson Committed by Mauro Carvalho Chehab
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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: default avatarJemma Denson <jdenson@gmail.com>
Signed-off-by: default avatarPatrick Boettcher <patrick.boettcher@posteo.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent c84251bb

drivers/media/dvb-frontends/cx24120.c

+28 −0
Original line number Diff line number Diff line
@@ -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 */