drm/i915/icl: Define DSI panel programming registers

This patch defines DSI_CMD_RXCTL, DSI_CMD_TXCTL registers,
bitfields, masks and macros used for configuring DSI panel.

v2: Define remaining bitfields

v3 by Jani:
 - Alignment fix
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/37b41fe08ce50c3d9ef7d55c03d12a8a10a252d6.1539613303.git.jani.nikula@intel.com

drivers/gpu/drm/i915/i915_reg.h

@@ -10437,6 +10437,44 @@ enum skl_power_gate {
 #define  S3D_ORIENTATION_LANDSCAPE	(1 << 1)
 #define  EOTP_DISABLED			(1 << 0)
 
+#define _DSI_CMD_RXCTL_0		0x6b0d4
+#define _DSI_CMD_RXCTL_1		0x6b8d4
+#define DSI_CMD_RXCTL(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_RXCTL_0,\
+						  _DSI_CMD_RXCTL_1)
+#define  READ_UNLOADS_DW		(1 << 16)
+#define  RECEIVED_UNASSIGNED_TRIGGER	(1 << 15)
+#define  RECEIVED_ACKNOWLEDGE_TRIGGER	(1 << 14)
+#define  RECEIVED_TEAR_EFFECT_TRIGGER	(1 << 13)
+#define  RECEIVED_RESET_TRIGGER		(1 << 12)
+#define  RECEIVED_PAYLOAD_WAS_LOST	(1 << 11)
+#define  RECEIVED_CRC_WAS_LOST		(1 << 10)
+#define  NUMBER_RX_PLOAD_DW_MASK	(0xff << 0)
+#define  NUMBER_RX_PLOAD_DW_SHIFT	0
+
+#define _DSI_CMD_TXCTL_0		0x6b0d0
+#define _DSI_CMD_TXCTL_1		0x6b8d0
+#define DSI_CMD_TXCTL(tc)		_MMIO_DSI(tc,	\
+						  _DSI_CMD_TXCTL_0,\
+						  _DSI_CMD_TXCTL_1)
+#define  KEEP_LINK_IN_HS		(1 << 24)
+#define  FREE_HEADER_CREDIT_MASK	(0x1f << 8)
+#define  FREE_HEADER_CREDIT_SHIFT	0x8
+#define  FREE_PLOAD_CREDIT_MASK		(0xff << 0)
+#define  FREE_PLOAD_CREDIT_SHIFT	0
+#define  MAX_HEADER_CREDIT		0x10
+#define  MAX_PLOAD_CREDIT		0x40
+
+#define _DSI_LP_MSG_0			0x6b0d8
+#define _DSI_LP_MSG_1			0x6b8d8
+#define DSI_LP_MSG(tc)			_MMIO_DSI(tc,	\
+						  _DSI_LP_MSG_0,\
+						  _DSI_LP_MSG_1)
+#define  LPTX_IN_PROGRESS		(1 << 17)
+#define  LINK_IN_ULPS			(1 << 16)
+#define  LINK_ULPS_TYPE_LP11		(1 << 8)
+#define  LINK_ENTER_ULPS		(1 << 0)
+
 /* bits 31:0 */
 #define _MIPIA_DBI_BW_CTRL		(dev_priv->mipi_mmio_base + 0xb084)
 #define _MIPIC_DBI_BW_CTRL		(dev_priv->mipi_mmio_base + 0xb884)