diff options
Diffstat (limited to 'drivers/media/dvb/frontends')
| -rw-r--r-- | drivers/media/dvb/frontends/stv090x.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c index b3a02790c9a..3e0acd7cc82 100644 --- a/drivers/media/dvb/frontends/stv090x.c +++ b/drivers/media/dvb/frontends/stv090x.c @@ -2222,23 +2222,22 @@ static enum stv090x_delsys stv090x_get_std(struct stv090x_state *state) static s32 stv090x_get_car_freq(struct stv090x_state *state, u32 mclk) { s32 derot, int_1, int_2, tmp_1, tmp_2; - u32 pow2; derot = STV090x_READ_DEMOD(state, CFR2) << 16; derot |= STV090x_READ_DEMOD(state, CFR1) << 8; derot |= STV090x_READ_DEMOD(state, CFR0); derot = comp2(derot, 24); - pow2 = 1 << 12; - int_1 = state->mclk / pow2; - int_2 = derot / pow2; + int_1 = state->mclk >> 12; + int_2 = derot >> 12; - tmp_1 = state->mclk % pow2; - tmp_2 = derot % pow2; + /* carrier_frequency = MasterClock * Reg / 2^24 */ + tmp_1 = state->mclk % 0x1000; + tmp_2 = derot % 0x1000; derot = (int_1 * int_2) + - ((int_1 * tmp_2) / pow2) + - ((int_1 * tmp_1) / pow2); + ((int_1 * tmp_2) >> 12) + + ((int_1 * tmp_1) >> 12); return derot; } |