drm/i915/color: Add registers for 3D LUT

Add registers needed to program 3D LUT

v2:
- Follow convention documented in i915_reg.h (Jani)
- Removing space in trailer (Suraj)
- Move registers to intel_color_regs.h

BSpec: 69378, 69379, 69380
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-14-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Author: ckborah

drivers/gpu/drm/i915/display/intel_color_regs.h

@@ -316,4 +316,33 @@
 #define   SKL_BOTTOM_COLOR_CSC_ENABLE		REG_BIT(30)
 #define SKL_BOTTOM_COLOR(pipe)		_MMIO_PIPE(pipe, _SKL_BOTTOM_COLOR_A, _SKL_BOTTOM_COLOR_B)
 
+/* 3D LUT */
+#define _LUT_3D_CTL_A		0x490A4
+#define _LUT_3D_CTL_B		0x491A4
+#define LUT_3D_CTL(pipe)	_MMIO_PIPE(pipe, _LUT_3D_CTL_A, _LUT_3D_CTL_B)
+#define   LUT_3D_ENABLE			REG_BIT(31)
+#define   LUT_3D_READY			REG_BIT(30)
+#define   LUT_3D_BINDING_MASK		REG_GENMASK(23, 22)
+#define   LUT_3D_BIND_PIPE		REG_FIELD_PREP(LUT_3D_BINDING_MASK, 0)
+#define   LUT_3D_BIND_PLANE_1		REG_FIELD_PREP(LUT_3D_BINDING_MASK, 1)
+#define   LUT_3D_BIND_PLANE_2		REG_FIELD_PREP(LUT_3D_BINDING_MASK, 2)
+#define   LUT_3D_BIND_PLANE_3		REG_FIELD_PREP(LUT_3D_BINDING_MASK, 3)
+
+#define _LUT_3D_INDEX_A		0x490A8
+#define _LUT_3D_INDEX_B		0x491A8
+#define LUT_3D_INDEX(pipe)	_MMIO_PIPE(pipe, _LUT_3D_INDEX_A, _LUT_3D_INDEX_B)
+#define   LUT_3D_AUTO_INCREMENT		REG_BIT(13)
+#define   LUT_3D_INDEX_VALUE_MASK	REG_GENMASK(12, 0)
+#define   LUT_3D_INDEX_VALUE(x)		REG_FIELD_PREP(LUT_3D_INDEX_VALUE_MASK, (x))
+
+#define _LUT_3D_DATA_A		0x490AC
+#define _LUT_3D_DATA_B		0x491AC
+#define LUT_3D_DATA(pipe)	_MMIO_PIPE(pipe, _LUT_3D_DATA_A, _LUT_3D_DATA_B)
+#define   LUT_3D_DATA_RED_MASK		REG_GENMASK(29, 20)
+#define   LUT_3D_DATA_GREEN_MASK	REG_GENMASK(19, 10)
+#define   LUT_3D_DATA_BLUE_MASK		REG_GENMASK(9, 0)
+#define   LUT_3D_DATA_RED(x)		REG_FIELD_PREP(LUT_3D_DATA_RED_MASK, (x))
+#define   LUT_3D_DATA_GREEN(x)		REG_FIELD_PREP(LUT_3D_DATA_GREEN_MASK, (x))
+#define   LUT_3D_DATA_BLUE(x)		REG_FIELD_PREP(LUT_3D_DATA_BLUE_MASK, (x))
+
 #endif /* __INTEL_COLOR_REGS_H__ */