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iio: frequency: ad9832: simplify bitwise math

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Refactor the ad9832_calc_freqreg by removing the redundant u64 casts
and 1L bitwise left shift and replacing the multiplication by a bit
shift, as multiplying integers by a power of two is identical to a
bitwise left shift.

Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Joshua Crofts 2026-04-19 20:36:23 +02:00 committed by Jonathan Cameron
parent c0536d61f3
commit 5b382bf01a
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/iio/frequency/ad9832.c
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@ -117,8 +117,8 @@ struct ad9832_state {
static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
{
unsigned long long freqreg = (u64)fout *
(u64)((u64)1L << AD9832_FREQ_BITS);
u64 freqreg = (u64)fout << AD9832_FREQ_BITS;
do_div(freqreg, mclk);
return freqreg;
}