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| author | SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com> | 2018-10-02 08:44:04 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-11-05 14:20:51 -0500 |
| commit | d76e393f4cef8151c0a2178b6abeacecb9da4875 (patch) | |
| tree | 97cc0de197d3c056e4bcf2e56847771f442b08af /drivers/gpu/drm/amd/display/modules | |
| parent | fa44604cca2a653ca66f344062db729c8167434b (diff) | |
| download | linux-d76e393f4cef8151c0a2178b6abeacecb9da4875.tar.gz linux-d76e393f4cef8151c0a2178b6abeacecb9da4875.tar.bz2 linux-d76e393f4cef8151c0a2178b6abeacecb9da4875.zip | |
drm/amd/display: Fix incorrect end slope of EETF
Force the E2 to dc_fixpt_one when E1 exceeds that value. This is the
correct thing to do to avoid corruption.
Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c index 2e215c9e5445..bba518684243 100644 --- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c @@ -789,7 +789,8 @@ static void hermite_spline_eetf(struct fixed31_32 input_x, // (t^3 - 2t^2 + t) * (1-ks) E2 = dc_fixpt_add(E2, dc_fixpt_mul(temp2, dc_fixpt_add(t, dc_fixpt_sub(t3, temp1)))); - } + } else + E2 = dc_fixpt_one; temp1 = dc_fixpt_sub(dc_fixpt_one, E2); temp2 = dc_fixpt_mul(temp1, temp1); |