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Commit 08616da5 authored by Leo (Sunpeng) Li's avatar Leo (Sunpeng) Li Committed by Alex Deucher
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drm/amd/display: Use hardware max low point when sampling OTF 



The MAX_LOW_POINT macro should reflect the maximum low point within
hardware. Otherwise, sampling for the hardware points from the output
transfer function (OTF) will be incorrect.

Also, fix usage of MAX_LOW_POINT accordingly.

Signed-off-by: default avatarLeo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: default avatarKrunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 3a97f3ff

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

+3 −3
Original line number Diff line number Diff line
@@ -409,7 +409,7 @@ static bool convert_to_custom_float(struct pwl_result_data *rgb_resulted, 
	return true;

}



#define MAX_LOW_POINT      11

#define MAX_LOW_POINT      25

#define NUMBER_REGIONS     16

#define NUMBER_SW_SEGMENTS 16
@@ -443,8 +443,8 @@ dce110_translate_regamma_to_hw_format(const struct dc_transfer_func *output_tf, 
		/* 16 segments

		 * segments are from 2^-11 to 2^5

		 */

		region_start = -MAX_LOW_POINT;

		region_end = NUMBER_REGIONS - MAX_LOW_POINT;

		region_start = -11;

		region_end = region_start + NUMBER_REGIONS;



		for (i = 0; i < NUMBER_REGIONS; i++)

			seg_distr[i] = 4;