Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

V4L/DVB (11591): stv090x: code simplification

Browse source 
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manu Abraham 2009-04-08 20:30:29 -03:00 committed by Mauro Carvalho Chehab
parent 5f99feffc0
commit da4b9059c9
1 changed files with 7 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
drivers/media/dvb/frontends/stv090x.c
View file

@ -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;
}