Commit c2f84e03 authored by Harry Wentland's avatar Harry Wentland Committed by Alex Deucher

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: default avatarHarry Wentland <harry.wentland@amd.com>
Reviewed-by: default avatarLeo Li <sunpeng.li@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2c773de2
......@@ -139,13 +139,6 @@ 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;
......
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