V4L/DVB (13988): [STV090x] Configuration parameters adc1_range, adc2_range, tuner_bbgain

Add parameters adc1_range, adc2_range and tuner_bbgain to the config struct.
Defaults: adc1_range = adc2_range = 2Vpp, tuner_bbgain = 10db
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stv090x.c

@@ -3237,7 +3237,10 @@ static enum stv090x_signal_state stv090x_algo(struct stv090x_state *state)
 		goto err;
 
 	if (state->config->tuner_set_bbgain) {
-		if (state->config->tuner_set_bbgain(fe, 10) < 0) /* 10dB */
+		reg = state->config->tuner_bbgain;
+		if (reg == 0)
+			reg = 10; /* default: 10dB */
+		if (state->config->tuner_set_bbgain(fe, reg) < 0)
 			goto err_gateoff;
 	}
 
@@ -4446,6 +4449,20 @@ static int stv090x_setup(struct dvb_frontend *fe)
 			state->internal->dev_ver);
 	}
 
+	/* ADC1 range */
+	reg = stv090x_read_reg(state, STV090x_TSTTNR1);
+	STV090x_SETFIELD(reg, ADC1_INMODE_FIELD,
+		(config->adc1_range == STV090x_ADC_1Vpp) ? 0 : 1);
+	if (stv090x_write_reg(state, STV090x_TSTTNR1, reg) < 0)
+		goto err;
+
+	/* ADC2 range */
+	reg = stv090x_read_reg(state, STV090x_TSTTNR3);
+	STV090x_SETFIELD(reg, ADC2_INMODE_FIELD,
+		(config->adc2_range == STV090x_ADC_1Vpp) ? 0 : 1);
+	if (stv090x_write_reg(state, STV090x_TSTTNR3, reg) < 0)
+		goto err;
+
 	if (stv090x_write_reg(state, STV090x_TSTRES0, 0x80) < 0)
 		goto err;
 	if (stv090x_write_reg(state, STV090x_TSTRES0, 0x00) < 0)

drivers/media/dvb/frontends/stv090x.h

@@ -60,6 +60,11 @@ enum stv090x_i2crpt {
 	STV090x_RPTLEVEL_2	= 7,
 };
 
+enum stv090x_adc_range {
+	STV090x_ADC_2Vpp	= 0,
+	STV090x_ADC_1Vpp	= 1
+};
+
 struct stv090x_config {
 	enum stv090x_device	device;
 	enum stv090x_mode	demod_mode;
@@ -75,6 +80,10 @@ struct stv090x_config {
 
 	enum stv090x_i2crpt	repeater_level;
 
+	u8			tuner_bbgain; /* default: 10db */
+	enum stv090x_adc_range	adc1_range; /* default: 2Vpp */
+	enum stv090x_adc_range	adc2_range; /* default: 2Vpp */
+
 	bool diseqc_envelope_mode;
 
 	int (*tuner_init) (struct dvb_frontend *fe);