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drm/amd/display: Use hardware max low point when sampling OTF

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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: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Sunpeng) Li
2018-02-02 09:46:41 -05:00
committed by Alex Deucher
parent 3a97f3fff1
commit 08616da569
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
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@@ -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;