diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c index 506f82cd5cc6..88d3f9d7dd55 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c +++ b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c @@ -486,3 +486,30 @@ int dc_fixpt_s4d19(struct fixed31_32 arg) else return ux_dy(arg.value, 4, 19); } + +struct fixed31_32 dc_fixpt_from_ux_dy(unsigned int value, + unsigned int integer_bits, + unsigned int fractional_bits) +{ + struct fixed31_32 fixpt_value = dc_fixpt_zero; + struct fixed31_32 fixpt_int_value = dc_fixpt_zero; + long long frac_mask = ((long long)1 << (long long)integer_bits) - 1; + + fixpt_value.value = (long long)value << (FIXED31_32_BITS_PER_FRACTIONAL_PART - fractional_bits); + frac_mask = frac_mask << fractional_bits; + fixpt_int_value.value = value & frac_mask; + fixpt_int_value.value <<= (FIXED31_32_BITS_PER_FRACTIONAL_PART - fractional_bits); + fixpt_value.value |= fixpt_int_value.value; + return fixpt_value; +} + +struct fixed31_32 dc_fixpt_from_int_dy(unsigned int int_value, + unsigned int frac_value, + unsigned int integer_bits, + unsigned int fractional_bits) +{ + struct fixed31_32 fixpt_value = dc_fixpt_from_int(int_value); + + fixpt_value.value |= (long long)frac_value << (FIXED31_32_BITS_PER_FRACTIONAL_PART - fractional_bits); + return fixpt_value; +} |