From 0d047c69b6b735f6fc53dcbc268fe5a106e9efde Mon Sep 17 00:00:00 2001 From: Manu Abraham Date: Thu, 9 Apr 2009 03:30:29 +0400 Subject: Code Simplification From: Manu Abraham Signed-off-by: Manu Abraham --- linux/drivers/media/dvb/frontends/stv090x.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'linux') diff --git a/linux/drivers/media/dvb/frontends/stv090x.c b/linux/drivers/media/dvb/frontends/stv090x.c index 2044288a3..2c7b5e6e3 100644 --- a/linux/drivers/media/dvb/frontends/stv090x.c +++ b/linux/drivers/media/dvb/frontends/stv090x.c @@ -3007,23 +3007,22 @@ 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; } -- cgit v1.2.3