diff options
| author | Igor M. Liplianin <liplianin@netup.ru> | 2009-10-27 14:59:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:41:25 -0200 |
| commit | 502cd96d5b0714e0ab022766014f58b0684699a8 (patch) | |
| tree | 6fbed7b6d477ee61badd79dcff0fdf0091a1c97a /drivers/media/dvb | |
| parent | 29372a8daec4c1dca83e294006488b1d47dd965c (diff) | |
V4L/DVB (13337): Change str snr scale for stv0900/903 and Netup Dual DVB-S2 card.
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb')
| -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 c8c72f56fdd..11dbe942aa4 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; } |