diff options
Diffstat (limited to 'include/drm/drm_fixed.h')
| -rw-r--r-- | include/drm/drm_fixed.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 81572d32db0c..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; @@ -214,4 +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 |