[media] af9033: implement DVBv5 stat block counters

Implement following API commands:
DTV_STAT_ERROR_BLOCK_COUNT
DTV_STAT_TOTAL_BLOCK_COUNT

These returns total and uncorrected error packets from outer FEC.

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

1 files changed, 32 insertions, 1 deletions

diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c
index 4c2061676bbe..7b853469bb3b 100644
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -38,6 +38,8 @@ struct af9033_dev {
         fe_status_t fe_status;
         u32 ber;
         u32 ucb;
+        u64 error_block_count;
+        u64 total_block_count;
         struct delayed_work stat_work;
         unsigned long last_stat_check;
 };
@@ -1015,7 +1017,7 @@ static void af9033_stat_work(struct work_struct *work)
         struct af9033_dev *dev = container_of(work, struct af9033_dev, stat_work.work);
         struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
         int ret, tmp, i, len;
-        u8 u8tmp, buf[3];
+        u8 u8tmp, buf[7];
 
         dev_dbg(&dev->client->dev, "\n");
 
@@ -1087,6 +1089,35 @@ static void af9033_stat_work(struct work_struct *work)
                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
         }
 
+        /* UCB/PER/BER */
+        if (dev->fe_status & FE_HAS_LOCK) {
+                /* outer FEC, 204 byte packets */
+                u16 abort_packet_count, rsd_packet_count;
+
+                /*
+                 * Packet count used for measurement is 10000
+                 * (rsd_packet_count). Maybe it should be increased?
+                 */
+
+                ret = af9033_rd_regs(dev, 0x800032, buf, 7);
+                if (ret)
+                        goto err;
+
+                abort_packet_count = (buf[1] << 8) | (buf[0] << 0);
+                rsd_packet_count = (buf[6] << 8) | (buf[5] << 0);
+
+                dev->error_block_count += abort_packet_count;
+                dev->total_block_count += rsd_packet_count;
+
+                c->block_count.len = 1;
+                c->block_count.stat[0].scale = FE_SCALE_COUNTER;
+                c->block_count.stat[0].uvalue = dev->total_block_count;
+
+                c->block_error.len = 1;
+                c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+                c->block_error.stat[0].uvalue = dev->error_block_count;
+        }
+
 err_schedule_delayed_work:
         schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
         return;