OpenSDV
/
linux-stable-rt
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/media/video/tda8290.c
View File

@ -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,