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Commit a21ddec6 authored by Dmytro Laktyushkin's avatar Dmytro Laktyushkin Committed by Alex Deucher
Browse files

drm/amd/display: fix 31_32_fixpt shift functions 



Signed-off-by: default avatarDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: default avatarEric Yang <eric.yang2@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6b8e1eb7

drivers/gpu/drm/amd/display/include/fixed31_32.h

+18 −8
Original line number Diff line number Diff line
@@ -27,6 +27,12 @@ 
#define __DAL_FIXED31_32_H__



#define FIXED31_32_BITS_PER_FRACTIONAL_PART 32

#ifndef LLONG_MIN

#define LLONG_MIN (1LL<<63)

#endif

#ifndef LLONG_MAX

#define LLONG_MAX (-1LL>>1)

#endif



/*

 * @brief
@@ -45,6 +51,7 @@ struct fixed31_32 { 
	long long value;

};





/*

 * @brief

 * Useful constants
@@ -201,14 +208,12 @@ static inline struct fixed31_32 dc_fixpt_clamp( 
 */

static inline struct fixed31_32 dc_fixpt_shl(struct fixed31_32 arg, unsigned char shift)

{

	struct fixed31_32 res;



	ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||

		((arg.value < 0) && (arg.value >= LLONG_MIN >> shift)));

		((arg.value < 0) && (arg.value >= (LLONG_MIN / (1 << shift)))));



	res.value = arg.value << shift;

	arg.value = arg.value << shift;



	return res;

	return arg;

}



/*
@@ -217,9 +222,14 @@ static inline struct fixed31_32 dc_fixpt_shl(struct fixed31_32 arg, unsigned cha 
 */

static inline struct fixed31_32 dc_fixpt_shr(struct fixed31_32 arg, unsigned char shift)

{

	struct fixed31_32 res;

	res.value = arg.value >> shift;

	return res;

	bool negative = arg.value < 0;



	if (negative)

		arg.value = -arg.value;

	arg.value = arg.value >> shift;

	if (negative)

		arg.value = -arg.value;

	return arg;

}



/*