diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/frontends/stv0900_core.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/media/dvb/frontends/stv0900_core.c b/drivers/media/dvb/frontends/stv0900_core.c index c8c72f5..11dbe94 100644 --- a/drivers/media/dvb/frontends/stv0900_core.c +++ b/drivers/media/dvb/frontends/stv0900_core.c @@ -599,6 +599,8 @@ static s32 stv0900_get_rf_level(struct stv0900_internal *i_params, break; } + dprintk("%s: AGC Gain = 0x%x\n", __func__, agc_gain); + imin = 0; imax = lookup->size - 1; if (INRANGE(lookup->table[imin].regval, agc_gain, lookup->table[imax].regval)) { @@ -634,7 +636,14 @@ static int stv0900_read_signal_strength(struct dvb_frontend *fe, u16 *strength) s32 rflevel = stv0900_get_rf_level(internal, &stv0900_rf, state->demod); - *strength = (rflevel + 100) * (16383 / 105); + rflevel = (rflevel + 100) * (65535 / 70); + if (rflevel < 0) + rflevel = 0; + + if (rflevel > 65535) + rflevel = 65535; + + *strength = rflevel; return 0; } @@ -709,6 +718,8 @@ static s32 stv0900_carr_get_quality(struct dvb_frontend *fe, } } + dprintk("%s: Quality = %d\n", __func__, c_n); + return c_n; } @@ -752,10 +763,16 @@ static int stv0900_read_ucblocks(struct dvb_frontend *fe, u32 * ucblocks) static int stv0900_read_snr(struct dvb_frontend *fe, u16 *snr) { - *snr = stv0900_carr_get_quality(fe, + s32 snrlcl = stv0900_carr_get_quality(fe, (const struct stv0900_table *)&stv0900_s2_cn); - *snr += 30; - *snr *= (16383 / 1030); + snrlcl = (snrlcl + 30) * 384; + if (snrlcl < 0) + snrlcl = 0; + + if (snrlcl > 65535) + snrlcl = 65535; + + *snr = snrlcl; return 0; } |
