[media] mn88472: implement PER statistics

Implement DVBv5 PER.

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

diff --git a/drivers/media/dvb-frontends/mn88472.c b/drivers/media/dvb-frontends/mn88472.c
index c7e5f63..f6938f9 100644 (file)
--- a/drivers/media/dvb-frontends/mn88472.c
+++ b/drivers/media/dvb-frontends/mn88472.c
@@ -179,6 +179,26 @@ static int mn88472_read_status(struct dvb_frontend *fe, enum fe_status *status)
                c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
        }
 
+       /* PER */
+       if (*status & FE_HAS_SYNC) {
+               ret = regmap_bulk_read(dev->regmap[0], 0xe1, buf, 4);
+               if (ret)
+                       goto err;
+
+               utmp1 = buf[0] << 8 | buf[1] << 0;
+               utmp2 = buf[2] << 8 | buf[3] << 0;
+               dev_dbg(&client->dev, "block_error=%u block_count=%u\n",
+                       utmp1, utmp2);
+
+               c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+               c->block_error.stat[0].uvalue += utmp1;
+               c->block_count.stat[0].scale = FE_SCALE_COUNTER;
+               c->block_count.stat[0].uvalue += utmp2;
+       } else {
+               c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+               c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+       }
+
        return 0;
 err:
        dev_dbg(&client->dev, "failed=%d\n", ret);
@@ -654,6 +674,8 @@ static int mn88472_probe(struct i2c_client *client,
        c = &dev->fe.dtv_property_cache;
        c->strength.len = 1;
        c->cnr.len = 1;
+       c->block_error.len = 1;
+       c->block_count.len = 1;
 
        /* Setup callbacks */
        pdata->get_dvb_frontend = mn88472_get_dvb_frontend;