V4L/DVB (7212): tda18271: move rf calibration code from tda18271c1_tune into a new...

move rf calibration code from tda18271c1_tune into a new function,
tda18271c1_rf_tracking_filter_calibration

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 26042a9..250899a 100644 (file)
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -652,21 +652,13 @@ static int tda18271c2_tune(struct dvb_frontend *fe,
 
 /* ------------------------------------------------------------------ */
 
-static int tda18271c1_tune(struct dvb_frontend *fe,
-                          u32 ifc, u32 freq, u32 bw, u8 std, int radio)
+static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
+                                                    u32 freq, u32 bw)
 {
        struct tda18271_priv *priv = fe->tuner_priv;
        unsigned char *regs = priv->tda18271_regs;
        u32 N = 0;
 
-       tda18271_init(fe);
-
-       mutex_lock(&priv->lock);
-
-       tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
-
-       /* RF tracking filter calibration */
-
        /* calculate bp filter */
        tda18271_calc_bp_filter(fe, &freq);
        tda18271_write_regs(fe, R_EP1, 1);
@@ -737,7 +729,7 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
 
        regs[R_EB7]   = 0x40;
        tda18271_write_regs(fe, R_EB7, 1);
-       msleep(10);
+       msleep(10); /* pll locking */
 
        regs[R_EB20]  = 0xec;
        tda18271_write_regs(fe, R_EB20, 1);
@@ -752,6 +744,22 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
        if (0 == tda18271_calc_rf_cal(fe, &freq))
                tda18271_write_regs(fe, R_EB14, 1);
 
+       return 0;
+}
+
+static int tda18271c1_tune(struct dvb_frontend *fe,
+                          u32 ifc, u32 freq, u32 bw, u8 std, int radio)
+{
+       struct tda18271_priv *priv = fe->tuner_priv;
+
+       tda18271_init(fe);
+
+       mutex_lock(&priv->lock);
+
+       tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
+
+       tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
+
        tda18271_channel_configuration(fe, ifc, freq, bw, std, radio);
 
        mutex_unlock(&priv->lock);