[media] si2168: implement ucb statistics

Implement DVBv5 UCB. Only uncorrected blocks are currently counted.

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/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 5fbb6c12b766f9bb4092e2f88b93942fac476b98..680ba06c29fb57610b6804d9b233f7a4458ada23 100644 (file)
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -178,6 +178,28 @@ static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
                c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
        }
 
+       /* UCB */
+       if (*status & FE_HAS_SYNC) {
+               memcpy(cmd.args, "\x84\x01", 2);
+               cmd.wlen = 2;
+               cmd.rlen = 3;
+               ret = si2168_cmd_execute(client, &cmd);
+               if (ret)
+                       goto err;
+
+               utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;
+               dev_dbg(&client->dev, "block_error=%u\n", utmp1);
+
+               /* Sometimes firmware returns bogus value */
+               if (utmp1 == 0xffff)
+                       utmp1 = 0;
+
+               c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+               c->block_error.stat[0].uvalue += utmp1;
+       } else {
+               c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+       }
+
        return 0;
 err:
        dev_dbg(&client->dev, "failed=%d\n", ret);
@@ -535,6 +557,8 @@ warm:
        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;
+       c->block_error.len = 1;
+       c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 
        dev->active = true;