diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.c b/drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.c deleted file mode 100644 index 4d3aaa82a07b..000000000000 --- a/drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * Copyright 2012-15 Advanced Micro Devices, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: AMD - * - */ - -#include "dm_services.h" -#include "include/fixed32_32.h" - -static uint64_t u64_div(uint64_t n, uint64_t d) -{ - uint32_t i = 0; - uint64_t r; - uint64_t q = div64_u64_rem(n, d, &r); - - for (i = 0; i < 32; ++i) { - uint64_t sbit = q & (1ULL<<63); - - r <<= 1; - r |= sbit ? 1 : 0; - q <<= 1; - if (r >= d) { - r -= d; - q |= 1; - } - } - - if (2*r >= d) - q += 1; - return q; -} - -struct fixed32_32 dal_fixed32_32_from_fraction(uint32_t n, uint32_t d) -{ - struct fixed32_32 fx; - - fx.value = u64_div((uint64_t)n << 32, (uint64_t)d << 32); - return fx; -} - -struct fixed32_32 dal_fixed32_32_add( - struct fixed32_32 lhs, - struct fixed32_32 rhs) -{ - struct fixed32_32 fx = {lhs.value + rhs.value}; - - ASSERT(fx.value >= rhs.value); - return fx; -} - -struct fixed32_32 dal_fixed32_32_add_int(struct fixed32_32 lhs, uint32_t rhs) -{ - struct fixed32_32 fx = {lhs.value + ((uint64_t)rhs << 32)}; - - ASSERT(fx.value >= (uint64_t)rhs << 32); - return fx; - -} -struct fixed32_32 dal_fixed32_32_sub( - struct fixed32_32 lhs, - struct fixed32_32 rhs) -{ - struct fixed32_32 fx; - - ASSERT(lhs.value >= rhs.value); - fx.value = lhs.value - rhs.value; - return fx; -} - -struct fixed32_32 dal_fixed32_32_sub_int(struct fixed32_32 lhs, uint32_t rhs) -{ - struct fixed32_32 fx; - - ASSERT(lhs.value >= ((uint64_t)rhs<<32)); - fx.value = lhs.value - ((uint64_t)rhs<<32); - return fx; -} - -struct fixed32_32 dal_fixed32_32_mul( - struct fixed32_32 lhs, - struct fixed32_32 rhs) -{ - struct fixed32_32 fx; - uint64_t lhs_int = lhs.value>>32; - uint64_t lhs_frac = (uint32_t)lhs.value; - uint64_t rhs_int = rhs.value>>32; - uint64_t rhs_frac = (uint32_t)rhs.value; - uint64_t ahbh = lhs_int * rhs_int; - uint64_t ahbl = lhs_int * rhs_frac; - uint64_t albh = lhs_frac * rhs_int; - uint64_t albl = lhs_frac * rhs_frac; - - ASSERT((ahbh>>32) == 0); - - fx.value = (ahbh<<32) + ahbl + albh + (albl>>32); - return fx; - -} - -struct fixed32_32 dal_fixed32_32_mul_int(struct fixed32_32 lhs, uint32_t rhs) -{ - struct fixed32_32 fx; - uint64_t lhsi = (lhs.value>>32) * (uint64_t)rhs; - uint64_t lhsf; - - ASSERT((lhsi>>32) == 0); - lhsf = ((uint32_t)lhs.value) * (uint64_t)rhs; - ASSERT((lhsi<<32) + lhsf >= lhsf); - fx.value = (lhsi<<32) + lhsf; - return fx; -} - -struct fixed32_32 dal_fixed32_32_div( - struct fixed32_32 lhs, - struct fixed32_32 rhs) -{ - struct fixed32_32 fx; - - fx.value = u64_div(lhs.value, rhs.value); - return fx; -} - -struct fixed32_32 dal_fixed32_32_div_int(struct fixed32_32 lhs, uint32_t rhs) -{ - struct fixed32_32 fx; - - fx.value = u64_div(lhs.value, (uint64_t)rhs << 32); - return fx; -} - -uint32_t dal_fixed32_32_ceil(struct fixed32_32 v) -{ - ASSERT((uint32_t)v.value ? (v.value >> 32) + 1 >= 1 : true); - return (v.value>>32) + ((uint32_t)v.value ? 1 : 0); -} - -uint32_t dal_fixed32_32_round(struct fixed32_32 v) -{ - ASSERT(v.value + (1ULL<<31) >= (1ULL<<31)); - return (v.value + (1ULL<<31))>>32; -} - |