drm/i915: Add register definitions for Plane Degamma

Add macros to define Plane Degamma registers

v2:
 - Add BSpec links (Suraj)
v3:
 - Add Bspec links in trailer (Suraj)
 - Fix checkpatch issues (Suraj)

BSpec: 50411, 50412, 50413, 50414
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-9-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Author: uma-intel

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

@@ -254,6 +254,7 @@
 #define   PLANE_COLOR_PIPE_CSC_ENABLE			REG_BIT(23) /* Pre-ICL */
 #define   PLANE_COLOR_PLANE_CSC_ENABLE			REG_BIT(21) /* ICL+ */
 #define   PLANE_COLOR_INPUT_CSC_ENABLE			REG_BIT(20) /* ICL+ */
+#define   PLANE_COLOR_PRE_CSC_GAMMA_ENABLE		REG_BIT(14)
 #define   PLANE_COLOR_CSC_MODE_MASK			REG_GENMASK(19, 17)
 #define   PLANE_COLOR_CSC_MODE_BYPASS			REG_FIELD_PREP(PLANE_COLOR_CSC_MODE_MASK, 0)
 #define   PLANE_COLOR_CSC_MODE_YUV601_TO_RGB601		REG_FIELD_PREP(PLANE_COLOR_CSC_MODE_MASK, 1)
@@ -290,6 +291,53 @@
 									   _PLANE_INPUT_CSC_POSTOFF_HI_1_A, _PLANE_INPUT_CSC_POSTOFF_HI_1_B, \
 									   _PLANE_INPUT_CSC_POSTOFF_HI_2_A, _PLANE_INPUT_CSC_POSTOFF_HI_2_B)
 
+#define _MMIO_PLANE_GAMC(plane, i, a, b)  _MMIO(_PIPE(plane, a, b) + (i) * 4)
+
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_1_A	0x701d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_1_B	0x711d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_2_A	0x702d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_2_B	0x712d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_1(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_INDEX_ENH_1_A, \
+							      _PLANE_PRE_CSC_GAMC_INDEX_ENH_1_B)
+#define _PLANE_PRE_CSC_GAMC_INDEX_ENH_2(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_INDEX_ENH_2_A, \
+							      _PLANE_PRE_CSC_GAMC_INDEX_ENH_2_B)
+#define PLANE_PRE_CSC_GAMC_INDEX_ENH(pipe, plane, i)	_MMIO_PLANE_GAMC(plane, i, _PLANE_PRE_CSC_GAMC_INDEX_ENH_1(pipe), \
+									 _PLANE_PRE_CSC_GAMC_INDEX_ENH_2(pipe))
+#define  PLANE_PAL_PREC_AUTO_INCREMENT          REG_BIT(10)
+
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_1_A	0x701d4
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_1_B	0x711d4
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_2_A	0x702d4
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_2_B	0x712d4
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_1(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_DATA_ENH_1_A, \
+							      _PLANE_PRE_CSC_GAMC_DATA_ENH_1_B)
+#define _PLANE_PRE_CSC_GAMC_DATA_ENH_2(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_DATA_ENH_2_A, \
+							      _PLANE_PRE_CSC_GAMC_DATA_ENH_2_B)
+#define PLANE_PRE_CSC_GAMC_DATA_ENH(pipe, plane, i)	_MMIO_PLANE_GAMC(plane, i, _PLANE_PRE_CSC_GAMC_DATA_ENH_1(pipe), \
+									 _PLANE_PRE_CSC_GAMC_DATA_ENH_2(pipe))
+
+#define _PLANE_PRE_CSC_GAMC_INDEX_1_A		0x704d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_1_B		0x714d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_2_A		0x705d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_2_B		0x715d0
+#define _PLANE_PRE_CSC_GAMC_INDEX_1(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_INDEX_1_A, \
+							      _PLANE_PRE_CSC_GAMC_INDEX_1_B)
+#define _PLANE_PRE_CSC_GAMC_INDEX_2(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_INDEX_2_A, \
+							      _PLANE_PRE_CSC_GAMC_INDEX_2_B)
+#define PLANE_PRE_CSC_GAMC_INDEX(pipe, plane, i)	_MMIO_PLANE_GAMC(plane, i, _PLANE_PRE_CSC_GAMC_INDEX_1(pipe), \
+									 _PLANE_PRE_CSC_GAMC_INDEX_2(pipe))
+
+#define _PLANE_PRE_CSC_GAMC_DATA_1_A		0x704d4
+#define _PLANE_PRE_CSC_GAMC_DATA_1_B		0x714d4
+#define _PLANE_PRE_CSC_GAMC_DATA_2_A		0x705d4
+#define _PLANE_PRE_CSC_GAMC_DATA_2_B		0x715d4
+#define _PLANE_PRE_CSC_GAMC_DATA_1(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_DATA_1_A, \
+							      _PLANE_PRE_CSC_GAMC_DATA_1_B)
+#define _PLANE_PRE_CSC_GAMC_DATA_2(pipe)		_PIPE(pipe, _PLANE_PRE_CSC_GAMC_DATA_2_A, \
+							      _PLANE_PRE_CSC_GAMC_DATA_2_B)
+#define PLANE_PRE_CSC_GAMC_DATA(pipe, plane, i)		_MMIO_PLANE_GAMC(plane, i, _PLANE_PRE_CSC_GAMC_DATA_1(pipe), \
+									 _PLANE_PRE_CSC_GAMC_DATA_2(pipe))
+
 #define _PLANE_CSC_RY_GY_1_A			0x70210
 #define _PLANE_CSC_RY_GY_2_A			0x70310
 #define _PLANE_CSC_RY_GY_1_B			0x71210