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Commit 23d433fa authored by Dave Airlie's avatar Dave Airlie Committed by Alex Deucher
Browse files

amdgpu/dc: use kernel ilog2 for log_2. 



This should produce the same result.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4ee67c71

drivers/gpu/drm/amd/display/dc/basics/conversion.c

+0 −10
Original line number Diff line number Diff line
@@ -102,13 +102,3 @@ void convert_float_matrix( 
		matrix[i] = (uint16_t)reg_value;

	}

}
 


unsigned int log_2(unsigned int num)

{

	unsigned int result = 0;



	while ((num >>= 1) != 0)

		result++;



	return result;

}

drivers/gpu/drm/amd/display/dc/basics/conversion.h

+4 −1
Original line number Diff line number Diff line
@@ -38,6 +38,9 @@ void convert_float_matrix( 
	struct fixed31_32 *flt,

	uint32_t buffer_size);



unsigned int log_2(unsigned int num);

static inline unsigned int log_2(unsigned int num)

{

	return ilog2(num);

}



#endif