diff options
Diffstat (limited to 'include/drm/drm_fixed.h')
| -rw-r--r-- | include/drm/drm_fixed.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 6ea339d5de08..1922188f00e8 100644 --- a/include/drm/drm_fixed.h +++ b/include/drm/drm_fixed.h @@ -25,8 +25,9 @@ #ifndef DRM_FIXED_H #define DRM_FIXED_H -#include <linux/kernel.h> #include <linux/math64.h> +#include <linux/types.h> +#include <linux/wordpart.h> typedef union dfixed { u32 full; @@ -71,7 +72,6 @@ static inline u32 dfixed_div(fixed20_12 A, fixed20_12 B) } #define DRM_FIXED_POINT 32 -#define DRM_FIXED_POINT_HALF 16 #define DRM_FIXED_ONE (1ULL << DRM_FIXED_POINT) #define DRM_FIXED_DECIMAL_MASK (DRM_FIXED_ONE - 1) #define DRM_FIXED_DIGITS_MASK (~DRM_FIXED_DECIMAL_MASK) @@ -90,12 +90,12 @@ static inline int drm_fixp2int(s64 a) static inline int drm_fixp2int_round(s64 a) { - return drm_fixp2int(a + (1 << (DRM_FIXED_POINT_HALF - 1))); + return drm_fixp2int(a + DRM_FIXED_ONE / 2); } static inline int drm_fixp2int_ceil(s64 a) { - if (a > 0) + if (a >= 0) return drm_fixp2int(a + DRM_FIXED_ALMOST_ONE); else return drm_fixp2int(a - DRM_FIXED_ALMOST_ONE); @@ -215,4 +215,27 @@ static inline s64 drm_fixp_exp(s64 x) return sum; } +static inline int fxp_q4_from_int(int val_int) +{ + return val_int << 4; +} + +static inline int fxp_q4_to_int(int val_q4) +{ + return val_q4 >> 4; +} + +static inline int fxp_q4_to_int_roundup(int val_q4) +{ + return (val_q4 + 0xf) >> 4; +} + +static inline int fxp_q4_to_frac(int val_q4) +{ + return val_q4 & 0xf; +} + +#define FXP_Q4_FMT "%d.%04d" +#define FXP_Q4_ARGS(val_q4) fxp_q4_to_int(val_q4), (fxp_q4_to_frac(val_q4) * 625) + #endif |