drm/i915/glk: Program pipe gamma and degamma tables
The gamma tables in Geminilake were changed. There is no split-gamma
mode. Instead, there is a dedicated degamma table that is enabled
whenever pipe CSC is enabled.
The dedicated gamma table has 16 bit precision but doesn't support
separate channels. Since that doesn't match the per-channel format of
the degamma LUT property, for now only a linear table is loaded and the
property ignored.
v2: Remove empty line. (Ville)
Reuse broadwell code. (Ville)
v3: Don't write PIPE_CSC_MODE. (Ville)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170127090230.20302-1-ander.conselvan.de.oliveira@intel.com
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index d16627a..4322c67 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8176,12 +8176,26 @@
#define _PAL_PREC_EXT_GC_MAX_A 0x4A420
#define _PAL_PREC_EXT_GC_MAX_B 0x4AC20
#define _PAL_PREC_EXT_GC_MAX_C 0x4B420
+#define _PAL_PREC_EXT2_GC_MAX_A 0x4A430
+#define _PAL_PREC_EXT2_GC_MAX_B 0x4AC30
+#define _PAL_PREC_EXT2_GC_MAX_C 0x4B430
#define PREC_PAL_INDEX(pipe) _MMIO_PIPE(pipe, _PAL_PREC_INDEX_A, _PAL_PREC_INDEX_B)
#define PREC_PAL_DATA(pipe) _MMIO_PIPE(pipe, _PAL_PREC_DATA_A, _PAL_PREC_DATA_B)
#define PREC_PAL_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, _PAL_PREC_GC_MAX_A, _PAL_PREC_GC_MAX_B) + (i) * 4)
#define PREC_PAL_EXT_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, _PAL_PREC_EXT_GC_MAX_A, _PAL_PREC_EXT_GC_MAX_B) + (i) * 4)
+#define _PRE_CSC_GAMC_INDEX_A 0x4A484
+#define _PRE_CSC_GAMC_INDEX_B 0x4AC84
+#define _PRE_CSC_GAMC_INDEX_C 0x4B484
+#define PRE_CSC_GAMC_AUTO_INCREMENT (1 << 10)
+#define _PRE_CSC_GAMC_DATA_A 0x4A488
+#define _PRE_CSC_GAMC_DATA_B 0x4AC88
+#define _PRE_CSC_GAMC_DATA_C 0x4B488
+
+#define PRE_CSC_GAMC_INDEX(pipe) _MMIO_PIPE(pipe, _PRE_CSC_GAMC_INDEX_A, _PRE_CSC_GAMC_INDEX_B)
+#define PRE_CSC_GAMC_DATA(pipe) _MMIO_PIPE(pipe, _PRE_CSC_GAMC_DATA_A, _PRE_CSC_GAMC_DATA_B)
+
/* pipe CSC & degamma/gamma LUTs on CHV */
#define _CGM_PIPE_A_CSC_COEFF01 (VLV_DISPLAY_BASE + 0x67900)
#define _CGM_PIPE_A_CSC_COEFF23 (VLV_DISPLAY_BASE + 0x67904)