/* * Copyright 2009 Red Hat 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: Dave Airlie * Christian König */ #ifndef DRM_FIXED_H #define DRM_FIXED_H #include <linux/kernel.h> #include <linux/math64.h> fixed20_12; #define dfixed_const(A) … #define dfixed_const_half(A) … #define dfixed_const_666(A) … #define dfixed_const_8(A) … #define dfixed_mul(A, B) … #define dfixed_init(A) … #define dfixed_init_half(A) … #define dfixed_trunc(A) … #define dfixed_frac(A) … static inline u32 dfixed_floor(fixed20_12 A) { … } static inline u32 dfixed_ceil(fixed20_12 A) { … } static inline u32 dfixed_div(fixed20_12 A, fixed20_12 B) { … } #define DRM_FIXED_POINT … #define DRM_FIXED_ONE … #define DRM_FIXED_DECIMAL_MASK … #define DRM_FIXED_DIGITS_MASK … #define DRM_FIXED_EPSILON … #define DRM_FIXED_ALMOST_ONE … static inline s64 drm_int2fixp(int a) { … } static inline int drm_fixp2int(s64 a) { … } static inline int drm_fixp2int_round(s64 a) { … } static inline int drm_fixp2int_ceil(s64 a) { … } static inline unsigned drm_fixp_msbset(s64 a) { … } static inline s64 drm_fixp_mul(s64 a, s64 b) { … } static inline s64 drm_fixp_div(s64 a, s64 b) { … } static inline s64 drm_fixp_from_fraction(s64 a, s64 b) { … } static inline s64 drm_fixp_exp(s64 x) { … } static inline int fxp_q4_from_int(int val_int) { … } static inline int fxp_q4_to_int(int val_q4) { … } static inline int fxp_q4_to_int_roundup(int val_q4) { … } static inline int fxp_q4_to_frac(int val_q4) { … } #define FXP_Q4_FMT … #define FXP_Q4_ARGS(val_q4) … #endif
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