[Intel-gfx] [PATCH v3 06/20] drm/i915: Fix adl+ degamma LUT size

From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v3 06/20] drm/i915: Fix adl+ degamma LUT size
Date: Mon, 14 Nov 2022 17:37:18 +0200	[thread overview]
Message-ID: <20221114153732.11773-7-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20221114153732.11773-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 211913be40ce..c50841e36c61 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -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,		\
 	},									\
-- 
2.37.4

