Implement read_ber for BER estimate.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/dvb-frontends/m88ds3103.c | 81 ++++++++++++++++++++++++++++
drivers/media/dvb-frontends/m88ds3103_priv.h | 1 +
2 files changed, 82 insertions(+)
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
index 4176edf..dfe0c2f 100644
--- a/drivers/media/dvb-frontends/m88ds3103.c
+++ b/drivers/media/dvb-frontends/m88ds3103.c
@@ -926,6 +926,86 @@ err:
return ret;
}
+static int m88ds3103_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ struct m88ds3103_priv *priv = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret;
+ unsigned int utmp;
+ u8 buf[3], u8tmp;
+ dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+ 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;
+
+ if (!(u8tmp & 0x10)) {
+ u8tmp |= 0x10;
+
+ ret = m88ds3103_rd_regs(priv, 0xf6, buf, 2);
+ if (ret)
+ goto err;
+
+ priv->ber = (buf[1] << 8) | (buf[0] << 0);
+
+ /* restart counters */
+ 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);
+
+ if (utmp > 3000) {
+ ret = m88ds3103_rd_regs(priv, 0xf7, buf, 2);
+ if (ret)
+ goto err;
+
+ priv->ber = (buf[1] << 8) | (buf[0] << 0);
+
+ /* restart counters */
+ 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;
+ }
+
+ *ber = priv->ber;
+
+ return 0;
+err:
+ dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
+}
static int m88ds3103_set_tone(struct dvb_frontend *fe,
fe_sec_tone_mode_t fe_sec_tone_mode)
@@ -1284,6 +1364,7 @@ static struct dvb_frontend_ops m88ds3103_ops = {
.read_status = m88ds3103_read_status,
.read_snr = m88ds3103_read_snr,
+ .read_ber = m88ds3103_read_ber,
.diseqc_send_master_cmd = m88ds3103_diseqc_send_master_cmd,
.diseqc_send_burst = m88ds3103_diseqc_send_burst,
diff --git a/drivers/media/dvb-frontends/m88ds3103_priv.h b/drivers/media/dvb-frontends/m88ds3103_priv.h
index e73db5c..9169fdd 100644
--- a/drivers/media/dvb-frontends/m88ds3103_priv.h
+++ b/drivers/media/dvb-frontends/m88ds3103_priv.h
@@ -35,6 +35,7 @@ struct m88ds3103_priv {
struct dvb_frontend fe;
fe_delivery_system_t delivery_system;
fe_status_t fe_status;
+ u32 ber;
bool warm; /* FW running */
struct i2c_adapter *i2c_adapter;
};
--
1.9.3
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