V4L/DVB (8034): tda18271: fix IF notch frequency handling

The IF notch bit gets unset when we update the Main Post Div register
value, before we have a chance to write the desired IF notch setting
to the tuner.  Move the IF notch configuration to after we update MPD.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 89c01fb..98acd58 100644 (file)
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -45,6 +45,21 @@ static inline int charge_pump_source(struct dvb_frontend *fe, int force)
                                           TDA18271_MAIN_PLL, force);
 }
 
+static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
+{
+       struct tda18271_priv *priv = fe->tuner_priv;
+       unsigned char *regs = priv->tda18271_regs;
+
+       switch (priv->mode) {
+       case TDA18271_ANALOG:
+               regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
+               break;
+       case TDA18271_DIGITAL:
+               regs[R_MPD]  |= 0x80; /* IF notch = 1 */
+               break;
+       }
+}
+
 static int tda18271_channel_configuration(struct dvb_frontend *fe,
                                          struct tda18271_std_map_item *map,
                                          u32 freq, u32 bw)
@@ -66,19 +81,10 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
        /* set cal mode to normal */
        regs[R_EP4]  &= ~0x03;
 
-       /* update IF output level & IF notch frequency */
+       /* update IF output level */
        regs[R_EP4]  &= ~0x1c; /* clear if level bits */
        regs[R_EP4]  |= (map->if_lvl << 2);
 
-       switch (priv->mode) {
-       case TDA18271_ANALOG:
-               regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
-               break;
-       case TDA18271_DIGITAL:
-               regs[R_MPD]  |= 0x80; /* IF notch = 1 */
-               break;
-       }
-
        /* update FM_RFn */
        regs[R_EP4]  &= ~0x80;
        regs[R_EP4]  |= map->fm_rfn << 7;
@@ -135,6 +141,7 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
        switch (priv->role) {
        case TDA18271_MASTER:
                tda18271_calc_main_pll(fe, N);
+               tda18271_set_if_notch(fe);
                tda18271_write_regs(fe, R_MPD, 4);
                break;
        case TDA18271_SLAVE:
@@ -142,6 +149,7 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
                tda18271_write_regs(fe, R_CPD, 4);
 
                regs[R_MPD] = regs[R_CPD] & 0x7f;
+               tda18271_set_if_notch(fe);
                tda18271_write_regs(fe, R_MPD, 1);
                break;
        }
@@ -507,7 +515,7 @@ static int tda18271_powerscan_init(struct dvb_frontend *fe)
        /* set cal mode to normal */
        regs[R_EP4]  &= ~0x03;
 
-       /* update IF output level & IF notch frequency */
+       /* update IF output level */
        regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 
        ret = tda18271_write_regs(fe, R_EP3, 2);