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Rev 4103 Rev 6336
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#define DRM_FIXED_POINT		32
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#define DRM_FIXED_POINT		32
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#define DRM_FIXED_ONE		(1ULL << DRM_FIXED_POINT)
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#define DRM_FIXED_ONE		(1ULL << DRM_FIXED_POINT)
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#define DRM_FIXED_DECIMAL_MASK	(DRM_FIXED_ONE - 1)
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#define DRM_FIXED_DECIMAL_MASK	(DRM_FIXED_ONE - 1)
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#define DRM_FIXED_DIGITS_MASK	(~DRM_FIXED_DECIMAL_MASK)
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#define DRM_FIXED_EPSILON	1LL
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#define DRM_FIXED_DIGITS_MASK	(~DRM_FIXED_DECIMAL_MASK)
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#define DRM_FIXED_ALMOST_ONE	(DRM_FIXED_ONE - DRM_FIXED_EPSILON)
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static inline s64 drm_int2fixp(int a)
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static inline s64 drm_int2fixp(int a)
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{
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{
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	return ((s64)a) << DRM_FIXED_POINT;
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	return ((s64)a) << DRM_FIXED_POINT;
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}
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}
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static inline int drm_fixp2int(int64_t a)
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static inline int drm_fixp2int(s64 a)
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{
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	return ((s64)a) >> DRM_FIXED_POINT;
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}
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static inline int drm_fixp2int_ceil(s64 a)
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{
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	if (a > 0)
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		return drm_fixp2int(a + DRM_FIXED_ALMOST_ONE);
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{
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	else
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	return ((s64)a) >> DRM_FIXED_POINT;
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		return drm_fixp2int(a - DRM_FIXED_ALMOST_ONE);
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}
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}
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static inline unsigned drm_fixp_msbset(int64_t a)
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static inline unsigned drm_fixp_msbset(s64 a)
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		return result >> (shift - DRM_FIXED_POINT);
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		return result >> (shift - DRM_FIXED_POINT);
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	return result;
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	return result;
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}
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static inline s64 drm_fixp_from_fraction(s64 a, s64 b)
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{
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	s64 res;
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	bool a_neg = a < 0;
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	bool b_neg = b < 0;
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	u64 a_abs = a_neg ? -a : a;
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	u64 b_abs = b_neg ? -b : b;
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	u64 rem;
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	/* determine integer part */
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	u64 res_abs  = div64_u64_rem(a_abs, b_abs, &rem);
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	/* determine fractional part */
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	{
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		u32 i = DRM_FIXED_POINT;
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		do {
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			rem <<= 1;
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			res_abs <<= 1;
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			if (rem >= b_abs) {
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				res_abs |= 1;
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				rem -= b_abs;
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			}
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		} while (--i != 0);
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	}
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	/* round up LSB */
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	{
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		u64 summand = (rem << 1) >= b_abs;
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		res_abs += summand;
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	}
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	res = (s64) res_abs;
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	if (a_neg ^ b_neg)
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		res = -res;
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	return res;
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}
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}
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static inline s64 drm_fixp_exp(s64 x)
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static inline s64 drm_fixp_exp(s64 x)
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{
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{
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	s64 tolerance = div64_s64(DRM_FIXED_ONE, 1000000);
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	s64 tolerance = div64_s64(DRM_FIXED_ONE, 1000000);