drm/i915: add definition of DDI buffer translations regs
Those registers are used to train DDI buffer translations for each link
type.
v2: access each port registers through the DDI_BUF_TRANS macro
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index bcc76ce..a87f41c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4109,4 +4109,11 @@
#define DDI_PORT_WIDTH_X4 (3<<1)
#define DDI_INIT_DISPLAY_DETECTED (1<<0)
+/* DDI Buffer Translations */
+#define DDI_BUF_TRANS_A 0x64E00
+#define DDI_BUF_TRANS_B 0x64E60
+#define DDI_BUF_TRANS(port) _PORT(port, \
+ DDI_BUF_TRANS_A, \
+ DDI_BUF_TRANS_B)
+
#endif /* _I915_REG_H_ */
