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 | 31 |
1 files changed, 27 insertions, 4 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 1726bdf89bae..88d3f9d7dd55 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c +++ b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c @@ -140,8 +140,6 @@ struct fixed31_32 dc_fixpt_mul(struct fixed31_32 arg1, struct fixed31_32 arg2) res.value = arg1_int * arg2_int; - ASSERT(res.value <= LONG_MAX); - res.value <<= FIXED31_32_BITS_PER_FRACTIONAL_PART; tmp = arg1_int * arg2_fra; @@ -185,8 +183,6 @@ struct fixed31_32 dc_fixpt_sqr(struct fixed31_32 arg) res.value = arg_int * arg_int; - ASSERT(res.value <= LONG_MAX); - res.value <<= FIXED31_32_BITS_PER_FRACTIONAL_PART; tmp = arg_int * arg_fra; @@ -490,3 +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; +} |