[PATCH] drm/i915/icl: Add DSS_CTL Registers

[Anusha Srivatsa <anusha.srivatsa@intel.com>]

From: "Srivatsa, Anusha" <anusha.srivatsa@intel.com>

Add defines for DSS_CTL registers.
These registers specify the big joiner, splitter,
overlap pixels and info regarding display stream
compression enabled on left or right branch.

v2:
- Add define to conditionally check the buffer target depth (James Ausmus)

Suggested-by: Madhav Chauhan <madhav.chauhan@intel.com>
Cc: Madhav Chauhan <madhav.chauhan@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 7394605..0a0e07c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7707,6 +7707,39 @@ enum {
 #define RC_MAX_QP_SHIFT				5
 #define RC_MIN_QP_SHIFT				0
 
+/* Display Stream Splitter Control */
+#define DSS_CTL1				_MMIO(0x67400)
+#define  SPLITTER_ENABLE			(1 << 31)
+#define  JOINER_ENABLE				(1 << 30)
+#define  DUAL_LINK_MODE_INTERLEAVE		(1 << 24)
+#define  DUAL_LINK_MODE_FRONTBACK		(0 << 24)
+#define  OVERLAP_PIXELS_MASK			(0xf << 16)
+#define  OVERLAP_PIXELS(pixels)			((pixels) << 16)
+#define  LEFT_DL_BUF_TARGET_DEPTH_MASK		(0xfff << 0)
+#define  LEFT_DL_BUF_TARGET_DEPTH(pixels)	((pixels) << 0)
+#define  MAX_DL_BUFFER_TARGET_DEPTH		0x5A0
+
+#define DSS_CTL2				_MMIO(0x67404)
+#define  LEFT_BRANCH_VDSC_ENABLE		(1 << 31)
+#define  RIGHT_BRANCH_VDSC_ENABLE		(1 << 15)
+#define  RIGHT_DL_BUF_TARGET_DEPTH_MASK		(0xfff << 0)
+#define  RIGHT_DL_BUF_TARGET_DEPTH(pixels)	((pixels) << 0)
+
+#define _ICL_PIPE_DSS_CTL1_PB			0x78200
+#define _ICL_PIPE_DSS_CTL1_PC			0x78400
+#define ICL_PIPE_DSS_CTL1(pipe)			_MMIO_PIPE((pipe) - PIPE_B, \
+							   _ICL_PIPE_DSS_CTL1_PB, \
+							   _ICL_PIPE_DSS_CTL1_PC)
+#define  BIG_JOINER_ENABLE			(1 << 29)
+#define  MASTER_BIG_JOINER_ENABLE		(1 << 28)
+#define  VGA_CENTERING_ENABLE			(1 << 27)
+
+#define _ICL_PIPE_DSS_CTL2_PB			0x78204
+#define _ICL_PIPE_DSS_CTL2_PC			0x78404
+#define ICL_PIPE_DSS_CTL2(pipe)			_MMIO_PIPE((pipe) - PIPE_B, \
+							   _ICL_PIPE_DSS_CTL2_PB, \
+							   _ICL_PIPE_DSS_CTL2_PC)
+
 #define DSCA_RC_RANGE_PARAMETERS_1		_MMIO(0x6B248)
 #define DSCA_RC_RANGE_PARAMETERS_1_UDW		_MMIO(0x6B248 + 4)
 #define DSCC_RC_RANGE_PARAMETERS_1		_MMIO(0x6BA48)
-- 
2.7.4

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