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V4L/DVB (6723): tda18271: only force init once during attach

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Once the image rejection calibration procedure has been successful,
we should not initialize the tuner registers again.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2007-12-01 17:40:16 -03:00 • committed by Mauro Carvalho Chehab
parent 2b057e8dc6
commit efce841093
1 changed files with 17 additions and 1 deletions
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18
drivers/media/dvb/frontends/tda18271-fe.c
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@ -337,6 +337,20 @@ static int tda18271_init_regs(struct dvb_frontend *fe)
return 0; return 0;
} }
static int tda18271_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
tda18271_read_regs(fe);
/* test IR_CAL_OK to see if we need init */
if ((regs[R_EP1] & 0x08) == 0)
tda18271_init_regs(fe);
return 0;
}
static int tda18271_tune(struct dvb_frontend *fe, static int tda18271_tune(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std) u32 ifc, u32 freq, u32 bw, u8 std)
{ {
@ -742,7 +756,7 @@ static struct dvb_tuner_ops tda18271_tuner_ops = {
.frequency_max = 864000000, .frequency_max = 864000000,
.frequency_step = 62500 .frequency_step = 62500
}, },
.init = tda18271_init_regs, .init = tda18271_init,
.set_params = tda18271_set_params, .set_params = tda18271_set_params,
.set_analog_params = tda18271_set_analog_params, .set_analog_params = tda18271_set_analog_params,
.release = tda18271_release, .release = tda18271_release,
@ -768,6 +782,8 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
fe->tuner_priv = priv; fe->tuner_priv = priv;
tda18271_init_regs(fe);
return fe; return fe;
} }
EXPORT_SYMBOL_GPL(tda18271_attach); EXPORT_SYMBOL_GPL(tda18271_attach);