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 <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index 726e102..25c127f 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -337,6 +337,20 @@
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 @@
.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 @@
fe->tuner_priv = priv;
+ tda18271_init_regs(fe);
+
return fe;
}
EXPORT_SYMBOL_GPL(tda18271_attach);