[media] rtl2832: implement DVBv5 BER statistic

DVBv5 BER.

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

2 files changed, 27 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 239472b4ce72..0a0899d2a6b2 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -476,6 +476,10 @@ static int rtl2832_init(struct dvb_frontend *fe)
         /* init stats here in order signal app which stats are supported */
         c->cnr.len = 1;
         c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+        c->post_bit_error.len = 1;
+        c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+        c->post_bit_count.len = 1;
+        c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
         /* start statistics polling */
         schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
         dev->sleeping = false;
@@ -904,6 +908,27 @@ static void rtl2832_stat_work(struct work_struct *work)
                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
         }
 
+        /* BER */
+        if (dev->fe_status & FE_HAS_LOCK) {
+                ret = rtl2832_bulk_read(client, 0x34e, buf, 2);
+                if (ret)
+                        goto err;
+
+                u16tmp = buf[0] << 8 | buf[1] << 0;
+                dev->post_bit_error += u16tmp;
+                dev->post_bit_count += 1000000;
+
+                dev_dbg(&client->dev, "ber errors=%u total=1000000\n", u16tmp);
+
+                c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+                c->post_bit_error.stat[0].uvalue = dev->post_bit_error;
+                c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+                c->post_bit_count.stat[0].uvalue = dev->post_bit_count;
+        } else {
+                c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+                c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+        }
+
 err_schedule_delayed_work:
         schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
         return;
diff --git a/drivers/media/dvb-frontends/rtl2832_priv.h b/drivers/media/dvb-frontends/rtl2832_priv.h
index 3c44983b95a0..a5f5ccdf10d8 100644
--- a/drivers/media/dvb-frontends/rtl2832_priv.h
+++ b/drivers/media/dvb-frontends/rtl2832_priv.h
@@ -35,6 +35,8 @@ struct rtl2832_dev {
         struct dvb_frontend fe;
         struct delayed_work stat_work;
         fe_status_t fe_status;
+        u64 post_bit_error;
+        u64 post_bit_count;
         bool i2c_gate_state;
         bool sleeping;
         struct delayed_work i2c_gate_work;