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 (file)
--- 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_ */