Implement DVBv5 BER statistics.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/dvb-frontends/m88ds3103.c | 88 ++++++++++++++++++++++++++++
drivers/media/dvb-frontends/m88ds3103_priv.h | 2 +
2 files changed, 90 insertions(+)
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
index 381a8ad..3cf89b6 100644
--- a/drivers/media/dvb-frontends/m88ds3103.c
+++ b/drivers/media/dvb-frontends/m88ds3103.c
@@ -305,6 +305,90 @@ static int m88ds3103_read_status(struct dvb_frontend *fe, fe_status_t *status)
c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
+ /* BER */
+ if (priv->fe_status & FE_HAS_LOCK) {
+ unsigned int utmp, post_bit_error, post_bit_count;
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ ret = m88ds3103_wr_reg(priv, 0xf9, 0x04);
+ if (ret)
+ goto err;
+
+ ret = m88ds3103_rd_reg(priv, 0xf8, &u8tmp);
+ if (ret)
+ goto err;
+
+ /* measurement ready? */
+ if (!(u8tmp & 0x10)) {
+ ret = m88ds3103_rd_regs(priv, 0xf6, buf, 2);
+ if (ret)
+ goto err;
+
+ post_bit_error = buf[1] << 8 | buf[0] << 0;
+ post_bit_count = 0x800000;
+ priv->post_bit_error += post_bit_error;
+ priv->post_bit_count += post_bit_count;
+
+ /* restart measurement */
+ u8tmp |= 0x10;
+ ret = m88ds3103_wr_reg(priv, 0xf8, u8tmp);
+ if (ret)
+ goto err;
+ }
+ break;
+ case SYS_DVBS2:
+ ret = m88ds3103_rd_regs(priv, 0xd5, buf, 3);
+ if (ret)
+ goto err;
+
+ utmp = buf[2] << 16 | buf[1] << 8 | buf[0] << 0;
+
+ /* enough data? */
+ if (utmp > 4000) {
+ ret = m88ds3103_rd_regs(priv, 0xf7, buf, 2);
+ if (ret)
+ goto err;
+
+ post_bit_error = buf[1] << 8 | buf[0] << 0;
+ post_bit_count = 32 * utmp; /* TODO: FEC */
+ priv->post_bit_error += post_bit_error;
+ priv->post_bit_count += post_bit_count;
+
+ /* restart measurement */
+ ret = m88ds3103_wr_reg(priv, 0xd1, 0x01);
+ if (ret)
+ goto err;
+
+ ret = m88ds3103_wr_reg(priv, 0xf9, 0x01);
+ if (ret)
+ goto err;
+
+ ret = m88ds3103_wr_reg(priv, 0xf9, 0x00);
+ if (ret)
+ goto err;
+
+ ret = m88ds3103_wr_reg(priv, 0xd1, 0x00);
+ if (ret)
+ goto err;
+ }
+ break;
+ default:
+ dev_dbg(&priv->i2c->dev,
+ "%s: invalid delivery_system\n", __func__);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[0].uvalue = priv->post_bit_error;
+ c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_count.stat[0].uvalue = priv->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;
+ }
+
return 0;
err:
dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
@@ -760,6 +844,10 @@ skip_fw_download:
/* 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;
return 0;
error_fw_release:
diff --git a/drivers/media/dvb-frontends/m88ds3103_priv.h b/drivers/media/dvb-frontends/m88ds3103_priv.h
index a2c0958..aafa28c 100644
--- a/drivers/media/dvb-frontends/m88ds3103_priv.h
+++ b/drivers/media/dvb-frontends/m88ds3103_priv.h
@@ -45,6 +45,8 @@ struct m88ds3103_priv {
u8 chip_id;
/* main mclk is calculated for M88RS6000 dynamically */
u32 mclk_khz;
+ u64 post_bit_error;
+ u64 post_bit_count;
};
struct m88ds3103_reg_val {
--
http://palosaari.fi/
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