diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5ede5a5..d0b4b23 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2078,11 +2078,6 @@
 
 /* Display & cursor control */
 
-/* dithering flag on Ironlake */
-#define PIPE_ENABLE_DITHER		(1 << 4)
-#define PIPE_DITHER_TYPE_MASK		(3 << 2)
-#define PIPE_DITHER_TYPE_SPATIAL	(0 << 2)
-#define PIPE_DITHER_TYPE_ST01		(1 << 2)
 /* Pipe A */
 #define PIPEADSL		0x70000
 #define   DSL_LINEMASK	       	0x00000fff
@@ -2101,6 +2096,17 @@
 #define   PIPECONF_INTERLACE_W_FIELD_INDICATION	(6 << 21)
 #define   PIPECONF_INTERLACE_FIELD_0_ONLY		(7 << 21)
 #define   PIPECONF_CXSR_DOWNCLOCK	(1<<16)
+#define   PIPECONF_BPP_MASK	(0x000000e0)
+#define   PIPECONF_BPP_8	(0<<5)
+#define   PIPECONF_BPP_10	(1<<5)
+#define   PIPECONF_BPP_6	(2<<5)
+#define   PIPECONF_BPP_12	(3<<5)
+#define   PIPECONF_DITHER_EN	(1<<4)
+#define   PIPECONF_DITHER_TYPE_MASK (0x0000000c)
+#define   PIPECONF_DITHER_TYPE_SP (0<<2)
+#define   PIPECONF_DITHER_TYPE_ST1 (1<<2)
+#define   PIPECONF_DITHER_TYPE_ST2 (2<<2)
+#define   PIPECONF_DITHER_TYPE_TEMP (3<<2)
 #define PIPEASTAT		0x70024
 #define   PIPE_FIFO_UNDERRUN_STATUS		(1UL<<31)
 #define   PIPE_CRC_ERROR_ENABLE			(1UL<<29)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d5cb7ba..948a360 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3910,8 +3910,8 @@
 	}
 
 	if (HAS_PCH_SPLIT(dev)) {
-		pipeconf &= ~PIPE_ENABLE_DITHER;
-		pipeconf &= ~PIPE_DITHER_TYPE_MASK;
+		pipeconf &= ~PIPECONF_DITHER_EN;
+		pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
 	}
 
 	/* The LVDS pin pair needs to be on before the DPLLs are enabled.
@@ -3955,8 +3955,8 @@
 		if (IS_I965G(dev)) {
 			if (dev_priv->lvds_dither) {
 				if (HAS_PCH_SPLIT(dev)) {
-					pipeconf |= PIPE_ENABLE_DITHER;
-					pipeconf |= PIPE_DITHER_TYPE_ST01;
+					pipeconf |= PIPECONF_DITHER_EN;
+					pipeconf |= PIPECONF_DITHER_TYPE_ST1;
 				} else
 					lvds |= LVDS_ENABLE_DITHER;
 			} else {