Commit 3782e050 authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (6140): tda8290: add get_rf_strength and improve status reading efficiency 



Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 6b897f2c

drivers/media/video/tda8290.c

+16 −7
Original line number Diff line number Diff line
@@ -553,27 +553,35 @@ static int tda8290_set_params(struct dvb_frontend *fe, 
static int tda8290_has_signal(struct dvb_frontend *fe)

{

	struct tda8290_priv *priv = fe->tuner_priv;

	int ret;



	unsigned char i2c_get_afc[1] = { 0x1B };

	unsigned char afc = 0;



	/* for now, report based on afc status */

	tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));

	tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);

	return (afc & 0x80)? 65535:0;



	ret = (afc & 0x80) ? 65535 : 0;



	tuner_dbg("AFC status: %d\n", ret);



	return ret;

}



static int tda8290_get_status(struct dvb_frontend *fe, u32 *status)

{

	struct tda8290_priv *priv = fe->tuner_priv;



	int signal = tda8290_has_signal(fe);

	*status = 0;



	/* for now, report based on afc status */

	if (signal)

	if (tda8290_has_signal(fe))

		*status = TUNER_STATUS_LOCKED;



	tuner_dbg("tda8290: AFC status: %d\n", signal);

	return 0;

}



static int tda8290_get_rf_strength(struct dvb_frontend *fe, u16 *strength)

{

	*strength = tda8290_has_signal(fe);



	return 0;

}
@@ -656,6 +664,7 @@ static struct dvb_tuner_ops tda8290_tuner_ops = { 
	.release           = tda8290_release,

	.get_frequency     = tda8290_get_frequency,

	.get_status        = tda8290_get_status,

	.get_rf_strength   = tda8290_get_rf_strength,

};



struct dvb_frontend *tda8290_attach(struct dvb_frontend *fe,