diff options
Diffstat (limited to 'drivers/media/dvb')
| -rw-r--r-- | drivers/media/dvb/frontends/stv0900_core.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/drivers/media/dvb/frontends/stv0900_core.c b/drivers/media/dvb/frontends/stv0900_core.c index 3cc6626fe63..5c8835ed733 100644 --- a/drivers/media/dvb/frontends/stv0900_core.c +++ b/drivers/media/dvb/frontends/stv0900_core.c @@ -656,13 +656,18 @@ static s32 stv0900_carr_get_quality(struct dvb_frontend *fe, dprintk(KERN_INFO "%s\n", __func__); - dmd_reg(lock_flag_field, F0900_P1_LOCK_DEFINITIF, F0900_P2_LOCK_DEFINITIF); + dmd_reg(lock_flag_field, F0900_P1_LOCK_DEFINITIF, + F0900_P2_LOCK_DEFINITIF); if (stv0900_get_standard(fe, demod) == STV0900_DVBS2_STANDARD) { - dmd_reg(noise_field1, F0900_P1_NOSPLHT_NORMED1, F0900_P2_NOSPLHT_NORMED1); - dmd_reg(noise_field0, F0900_P1_NOSPLHT_NORMED0, F0900_P2_NOSPLHT_NORMED0); + dmd_reg(noise_field1, F0900_P1_NOSPLHT_NORMED1, + F0900_P2_NOSPLHT_NORMED1); + dmd_reg(noise_field0, F0900_P1_NOSPLHT_NORMED0, + F0900_P2_NOSPLHT_NORMED0); } else { - dmd_reg(noise_field1, F0900_P1_NOSDATAT_NORMED1, F0900_P2_NOSDATAT_NORMED1); - dmd_reg(noise_field0, F0900_P1_NOSDATAT_NORMED0, F0900_P1_NOSDATAT_NORMED0); + dmd_reg(noise_field1, F0900_P1_NOSDATAT_NORMED1, + F0900_P2_NOSDATAT_NORMED1); + dmd_reg(noise_field0, F0900_P1_NOSDATAT_NORMED0, + F0900_P1_NOSDATAT_NORMED0); } if (stv0900_get_bits(i_params, lock_flag_field)) { @@ -670,27 +675,34 @@ static s32 stv0900_carr_get_quality(struct dvb_frontend *fe, regval = 0; msleep(5); for (i = 0; i < 16; i++) { - regval += MAKEWORD(stv0900_get_bits(i_params, noise_field1), - stv0900_get_bits(i_params, noise_field0)); + regval += MAKEWORD(stv0900_get_bits(i_params, + noise_field1), + stv0900_get_bits(i_params, + noise_field0)); msleep(1); } regval /= 16; imin = 0; imax = lookup->size - 1; - if (INRANGE(lookup->table[imin].regval, regval, lookup->table[imax].regval)) { + if (INRANGE(lookup->table[imin].regval, + regval, + lookup->table[imax].regval)) { while ((imax - imin) > 1) { i = (imax + imin) >> 1; - - if (INRANGE(lookup->table[imin].regval, regval, lookup->table[i].regval)) + if (INRANGE(lookup->table[imin].regval, + regval, + lookup->table[i].regval)) imax = i; else imin = i; } c_n = ((regval - lookup->table[imin].regval) - * (lookup->table[imax].realval - lookup->table[imin].realval) - / (lookup->table[imax].regval - lookup->table[imin].regval)) + * (lookup->table[imax].realval + - lookup->table[imin].realval) + / (lookup->table[imax].regval + - lookup->table[imin].regval)) + lookup->table[imin].realval; } else if (regval < lookup->table[imin].regval) c_n = 1000; @@ -702,7 +714,10 @@ static s32 stv0900_carr_get_quality(struct dvb_frontend *fe, static int stv0900_read_snr(struct dvb_frontend *fe, u16 *snr) { - *snr = (16383 / 1030) * (30 + stv0900_carr_get_quality(fe, (const struct stv0900_table *)&stv0900_s2_cn)); + *snr = stv0900_carr_get_quality(fe, + (const struct stv0900_table *)&stv0900_s2_cn); + *snr += 30; + *snr *= (16383 / 1030); return 0; } |