diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-07-10 13:17:59 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-23 02:30:58 +0200 |
| commit | 4423a2ba808d0df1b394b9313ea9a0bbad764e93 (patch) | |
| tree | cc06b26cadcee4342838e79e7a8e12b23f8e3997 /drivers/media/dvb-frontends/m88ds3103.c | |
| parent | [media] m88ds3103: fix SNR reporting on 32-bit arch (diff) | |
| download | linux-4423a2ba808d0df1b394b9313ea9a0bbad764e93.tar.xz linux-4423a2ba808d0df1b394b9313ea9a0bbad764e93.zip | |
[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>
Diffstat (limited to 'drivers/media/dvb-frontends/m88ds3103.c')
| -rw-r--r-- | drivers/media/dvb-frontends/m88ds3103.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c index 4176edf623a8..dfe0c2f7f1ef 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, |