[media] af9013: add dvbv5 cnr

Add support for DVBv5 CNR.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/af9013.c

@@ -228,6 +228,7 @@ static int af9013_statistics_snr_result(struct dvb_frontend *fe)
 {
 	struct af9013_state *state = fe->demodulator_priv;
 	struct i2c_client *client = state->client;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	int ret, i, len;
 	unsigned int utmp;
 	u8 buf[3];
@@ -283,6 +284,9 @@ static int af9013_statistics_snr_result(struct dvb_frontend *fe)
 	}
 	state->snr = utmp * 10; /* dB/10 */
 
+	c->cnr.stat[0].svalue = 1000 * utmp;
+	c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+
 	return 0;
 err:
 	dev_dbg(&client->dev, "failed %d\n", ret);
@@ -1509,6 +1513,7 @@ static int af9013_probe(struct i2c_client *client,
 {
 	struct af9013_state *state;
 	struct af9013_platform_data *pdata = client->dev.platform_data;
+	struct dtv_frontend_properties *c;
 	int ret, i;
 	u8 firmware_version[4];
 	static const struct regmap_bus regmap_bus = {
@@ -1573,6 +1578,10 @@ static int af9013_probe(struct i2c_client *client,
 	/* Setup callbacks */
 	pdata->get_dvb_frontend = af9013_get_dvb_frontend;
 
+	/* Init stats to indicate which stats are supported */
+	c = &state->fe.dtv_property_cache;
+	c->cnr.len = 1;
+
 	dev_info(&client->dev, "Afatech AF9013 successfully attached\n");
 	dev_info(&client->dev, "firmware version: %d.%d.%d.%d\n",
 		 firmware_version[0], firmware_version[1],