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authorLeo (Sunpeng) Li <sunpeng.li@amd.com>2018-02-02 09:46:41 -0500
committerAlex Deucher <alexander.deucher@amd.com>2018-02-19 14:20:05 -0500
commit08616da569751be1b9ce6128a28930847670c80d (patch)
treec784c5e2f9e2ffa01956a9093de48691e0dc76b6 /drivers/gpu/drm/amd/display/dc/dce110
parent3a97f3fff110d17ecc957ea99d16a8877890b4eb (diff)
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: 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>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 9e97cd74b0ec..bc698644d42a 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -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;