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V4L/DVB (6140): tda8290: add get_rf_strength and improve status reading efficiency

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Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2007-08-31 17:53:00 -03:00 committed by Mauro Carvalho Chehab
parent 6b897f2c39
commit 3782e050f8
1 changed files with 16 additions and 7 deletions
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23
drivers/media/video/tda8290.c
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@ -553,27 +553,35 @@ static int tda8290_set_params(struct dvb_frontend *fe,
static int tda8290_has_signal(struct dvb_frontend *fe) static int tda8290_has_signal(struct dvb_frontend *fe)
{ {
struct tda8290_priv *priv = fe->tuner_priv; struct tda8290_priv *priv = fe->tuner_priv;
int ret;
unsigned char i2c_get_afc[1] = { 0x1B }; unsigned char i2c_get_afc[1] = { 0x1B };
unsigned char afc = 0; 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_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1); 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) 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; *status = 0;
/* for now, report based on afc status */ if (tda8290_has_signal(fe))
if (signal)
*status = TUNER_STATUS_LOCKED; *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; return 0;
} }
@ -656,6 +664,7 @@ static struct dvb_tuner_ops tda8290_tuner_ops = {
.release = tda8290_release, .release = tda8290_release,
.get_frequency = tda8290_get_frequency, .get_frequency = tda8290_get_frequency,
.get_status = tda8290_get_status, .get_status = tda8290_get_status,
.get_rf_strength = tda8290_get_rf_strength,
}; };
struct dvb_frontend *tda8290_attach(struct dvb_frontend *fe, struct dvb_frontend *tda8290_attach(struct dvb_frontend *fe,