diff options
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2841er.c | 48 |
1 files changed, 45 insertions, 3 deletions
diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c index 0a2cd133ad9a..0b64158c306e 100644 --- a/drivers/media/dvb-frontends/cxd2841er.c +++ b/drivers/media/dvb-frontends/cxd2841er.c @@ -206,6 +206,9 @@ static const struct cxd2841er_cnr_data s2_cn_data[] = { (u32)(((iffreq)/48.0)*16777216.0 + 0.5) : \ (u32)(((iffreq)/41.0)*16777216.0 + 0.5)) +static int cxd2841er_freeze_regs(struct cxd2841er_priv *priv); +static int cxd2841er_unfreeze_regs(struct cxd2841er_priv *priv); + static void cxd2841er_i2c_debug(struct cxd2841er_priv *priv, u8 addr, u8 reg, u8 write, const u8 *data, u32 len) @@ -1401,6 +1404,41 @@ static int cxd2841er_read_ber_c(struct cxd2841er_priv *priv, return 0; } +static int cxd2841er_read_ber_i(struct cxd2841er_priv *priv, + u32 *bit_error, u32 *bit_count) +{ + u8 data[3]; + u8 pktnum[2]; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + if (priv->state != STATE_ACTIVE_TC) { + dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n", + __func__, priv->state); + return -EINVAL; + } + + cxd2841er_freeze_regs(priv); + cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60); + cxd2841er_read_regs(priv, I2C_SLVT, 0x5B, pktnum, sizeof(pktnum)); + cxd2841er_read_regs(priv, I2C_SLVT, 0x16, data, sizeof(data)); + + if (!pktnum[0] && !pktnum[1]) { + dev_dbg(&priv->i2c->dev, + "%s(): no valid BER data\n", __func__); + cxd2841er_unfreeze_regs(priv); + return -EINVAL; + } + + *bit_error = ((u32)(data[0] & 0x7F) << 16) | + ((u32)data[1] << 8) | data[2]; + *bit_count = ((((u32)pktnum[0] << 8) | pktnum[1]) * 204 * 8); + dev_dbg(&priv->i2c->dev, "%s(): bit_error=%u bit_count=%u\n", + __func__, *bit_error, *bit_count); + + cxd2841er_unfreeze_regs(priv); + return 0; +} + static int cxd2841er_mon_read_ber_s(struct cxd2841er_priv *priv, u32 *bit_error, u32 *bit_count) { @@ -1798,9 +1836,7 @@ static int cxd2841er_read_snr_i(struct cxd2841er_priv *priv, u32 *snr) cxd2841er_unfreeze_regs(priv); return 0; } - if (reg > 4996) - reg = 4996; - *snr = 100 * intlog10(reg) - 9031; + *snr = 10000 * (intlog10(reg) >> 24) - 9031; cxd2841er_unfreeze_regs(priv); return 0; } @@ -1879,6 +1915,9 @@ static void cxd2841er_read_ber(struct dvb_frontend *fe) case SYS_DVBC_ANNEX_C: ret = cxd2841er_read_ber_c(priv, &bit_error, &bit_count); break; + case SYS_ISDBT: + ret = cxd2841er_read_ber_i(priv, &bit_error, &bit_count); + break; case SYS_DVBS: ret = cxd2841er_mon_read_ber_s(priv, &bit_error, &bit_count); break; @@ -1992,6 +2031,9 @@ static void cxd2841er_read_snr(struct dvb_frontend *fe) return; } + dev_dbg(&priv->i2c->dev, "%s(): snr=%d\n", + __func__, (int32_t)tmp); + if (!ret) { p->cnr.stat[0].scale = FE_SCALE_DECIBEL; p->cnr.stat[0].svalue = tmp; |