diff options
Diffstat (limited to 'include/drm/drm_fixed.h')
| -rw-r--r-- | include/drm/drm_fixed.h | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 553210c02ee0..1922188f00e8 100644 --- a/include/drm/drm_fixed.h +++ b/include/drm/drm_fixed.h @@ -26,6 +26,8 @@ #define DRM_FIXED_H #include <linux/math64.h> +#include <linux/types.h> +#include <linux/wordpart.h> typedef union dfixed { u32 full; @@ -86,9 +88,14 @@ static inline int drm_fixp2int(s64 a) return ((s64)a) >> DRM_FIXED_POINT; } +static inline int drm_fixp2int_round(s64 a) +{ + 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); @@ -208,4 +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 |