Add support for DVBv5 CNR.

Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
 drivers/media/dvb-frontends/af9013.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/media/dvb-frontends/af9013.c 
b/drivers/media/dvb-frontends/af9013.c
index a6b88ae..68091f2 100644
--- a/drivers/media/dvb-frontends/af9013.c
+++ b/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);
@@ -1508,6 +1512,7 @@ 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 = {
@@ -1572,6 +1577,10 @@ 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],
-- 
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