[media] dvb-frontends/cxd2841er: more configurable TSBITS

Bits 3 and 4 of the TSCONFIG register are important for certain hardware
constellations, in that they need to be zeroed. Add a configuration flag
to toggle this.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Acked-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/cxd2841er.c

@@ -3794,6 +3794,10 @@ static int cxd2841er_init_tc(struct dvb_frontend *fe)
 	cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4,
 		((priv->flags & CXD2841ER_TS_SERIAL) ? 0x80 : 0x00), 0x80);
 
+	/* clear TSCFG bits 3+4 */
+	if (priv->flags & CXD2841ER_TSBITS)
+		cxd2841er_set_reg_bits(priv, I2C_SLVT, 0xc4, 0x00, 0x18);
+
 	cxd2841er_init_stats(fe);
 
 	return 0;