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authorHarry Wentland <harry.wentland@amd.com>2018-04-12 22:37:09 +0200
committerAlex Deucher <alexander.deucher@amd.com>2018-04-19 17:19:11 +0200
commitd78fd7255881645fc645e23145d469385227170d (patch)
tree00b7aa0f55a454d729617eb678ef0e4310456378 /drivers/gpu
parentMerge branch 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux int... (diff)
downloadlinux-d78fd7255881645fc645e23145d469385227170d.tar.xz
linux-d78fd7255881645fc645e23145d469385227170d.zip
drm/amd/display: Don't program bypass on linear regamma LUT
Even though this is required for degamma since DCE HW only supports a couple predefined LUTs we can just program the LUT directly for regamma. This fixes dark screens which occurs when we program regamma to bypass while degamma is using srgb LUT. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
index f6cb502c303f..25f064c01038 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
@@ -138,13 +138,6 @@ int amdgpu_dm_set_regamma_lut(struct dm_crtc_state *crtc)
lut = (struct drm_color_lut *)blob->data;
lut_size = blob->length / sizeof(struct drm_color_lut);
- if (__is_lut_linear(lut, lut_size)) {
- /* Set to bypass if lut is set to linear */
- stream->out_transfer_func->type = TF_TYPE_BYPASS;
- stream->out_transfer_func->tf = TRANSFER_FUNCTION_LINEAR;
- return 0;
- }
-
gamma = dc_create_gamma();
if (!gamma)
return -ENOMEM;