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[media] m88ds3103: implement BER 

Implement read_ber for BER estimate.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2014-07-10 08:17:59 -03:00 committed by Mauro Carvalho Chehab
parent 3ae266f80c
commit 4423a2ba80
2 changed files with 82 additions and 0 deletions
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81
drivers/media/dvb-frontends/m88ds3103.c
View File

@ -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,

1
drivers/media/dvb-frontends/m88ds3103_priv.h
View File

@ -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;
};