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| author | Borislav Petkov <bp@suse.de> | 2022-09-27 15:29:33 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-09-27 15:29:33 +0200 |
| commit | c0cca6a66458a0daa627774de7ca2b678a6bb3d8 (patch) | |
| tree | a3fc9914daf2ca2fdedc7e4810302affdeb5680b /drivers/gpu/drm/amd/display/dc/basics/conversion.c | |
| parent | 57646d6769f13f9484ffc6869c493e25a6568073 (diff) | |
| parent | e7ccba7728cff0e0f1299951571f209fcadcb7b1 (diff) | |
Merge tag 'irqchip-fixes-6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull more irqchip fixes for 6.0 from Marc Zyngier:
- A couple of configuration fixes for the recently merged Loongarch drivers
- A fix to avoid dynamic allocation of a cpumask which was causing issues
with PREEMPT_RT and the GICv3 ITS
- A tightening of an error check in the stm32 exti driver
Link: https://lore.kernel.org/r/20220916085158.2592518-1-maz@kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/basics/conversion.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/basics/conversion.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/conversion.c b/drivers/gpu/drm/amd/display/dc/basics/conversion.c index 6767fab55c26..352e9afb85c6 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/conversion.c +++ b/drivers/gpu/drm/amd/display/dc/basics/conversion.c @@ -100,3 +100,24 @@ void convert_float_matrix( matrix[i] = (uint16_t)reg_value; } } + +static uint32_t find_gcd(uint32_t a, uint32_t b) +{ + uint32_t remainder = 0; + while (b != 0) { + remainder = a % b; + a = b; + b = remainder; + } + return a; +} + +void reduce_fraction(uint32_t num, uint32_t den, + uint32_t *out_num, uint32_t *out_den) +{ + uint32_t gcd = 0; + + gcd = find_gcd(num, den); + *out_num = num / gcd; + *out_den = den / gcd; +} |