Commit 397d5c2c authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Fix adl+ degamma LUT size 



The degamma LUT is interpolated so we need the 128th (==1.0)
entry to represent the full < 1.0 input range. Only the 129th
and 130th entries are strictly for the >=1.0 extended range
inputs.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-7-ville.syrjala@linux.intel.com


Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
parent f1c87a94

drivers/gpu/drm/i915/i915_pci.c

+1 −1
Original line number Diff line number Diff line
@@ -948,7 +948,7 @@ static const struct intel_device_info adl_s_info = { 
#define XE_LPD_FEATURES \

	.display.abox_mask = GENMASK(1, 0),					\

	.display.color = {							\

		.degamma_lut_size = 128, .gamma_lut_size = 1024,		\

		.degamma_lut_size = 129, .gamma_lut_size = 1024,		\

		.degamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING |		\

				     DRM_COLOR_LUT_EQUAL_CHANNELS,		\

	},									\