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 | 28 |
1 files changed, 28 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 26936892c6f5..011a97f82fb6 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c +++ b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c @@ -554,6 +554,22 @@ static inline uint32_t ux_dy( return result | fractional_part; } +static inline uint32_t clamp_ux_dy( + int64_t value, + uint32_t integer_bits, + uint32_t fractional_bits, + uint32_t min_clamp) +{ + uint32_t truncated_val = ux_dy(value, integer_bits, fractional_bits); + + if (value >= (1LL << (integer_bits + FIXED31_32_BITS_PER_FRACTIONAL_PART))) + return (1 << (integer_bits + fractional_bits)) - 1; + else if (truncated_val > min_clamp) + return truncated_val; + else + return min_clamp; +} + uint32_t dal_fixed31_32_u2d19( struct fixed31_32 arg) { @@ -565,3 +581,15 @@ uint32_t dal_fixed31_32_u0d19( { return ux_dy(arg.value, 0, 19); } + +uint32_t dal_fixed31_32_clamp_u0d14( + struct fixed31_32 arg) +{ + return clamp_ux_dy(arg.value, 0, 14, 1); +} + +uint32_t dal_fixed31_32_clamp_u0d10( + struct fixed31_32 arg) +{ + return clamp_ux_dy(arg.value, 0, 10, 1); +} |