From efce841093589bfef571a07e18e5446def9e04b4 Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Sat, 1 Dec 2007 17:40:16 -0300 Subject: V4L/DVB (6723): tda18271: only force init once during attach Once the image rejection calibration procedure has been successful, we should not initialize the tuner registers again. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/tda18271-fe.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers/media/dvb') diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c index 726e102cbc5..25c127f67c2 100644 --- a/drivers/media/dvb/frontends/tda18271-fe.c +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -337,6 +337,20 @@ static int tda18271_init_regs(struct dvb_frontend *fe) 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, u32 ifc, u32 freq, u32 bw, u8 std) { @@ -742,7 +756,7 @@ static struct dvb_tuner_ops tda18271_tuner_ops = { .frequency_max = 864000000, .frequency_step = 62500 }, - .init = tda18271_init_regs, + .init = tda18271_init, .set_params = tda18271_set_params, .set_analog_params = tda18271_set_analog_params, .release = tda18271_release, @@ -768,6 +782,8 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, fe->tuner_priv = priv; + tda18271_init_regs(fe); + return fe; } EXPORT_SYMBOL_GPL(tda18271_attach); -- cgit v1.2.3