drm/i915: Kill IS_DISPLAYREG()

All display registers should now include the proper offset on VLV.
That means IS_DISPLAYREG() is now useless, and we can eliminate it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.c

@@ -1119,102 +1119,6 @@ MODULE_LICENSE("GPL and additional rights");
 	((HAS_FORCE_WAKE((dev_priv)->dev)) && \
 	 ((reg) < 0x40000) &&            \
 	 ((reg) != FORCEWAKE))
-
-static bool IS_DISPLAYREG(u32 reg)
-{
-	/*
-	 * This should make it easier to transition modules over to the
-	 * new register block scheme, since we can do it incrementally.
-	 */
-	if (reg >= VLV_DISPLAY_BASE)
-		return false;
-
-	if (reg >= RENDER_RING_BASE &&
-	    reg < RENDER_RING_BASE + 0xff)
-		return false;
-	if (reg >= GEN6_BSD_RING_BASE &&
-	    reg < GEN6_BSD_RING_BASE + 0xff)
-		return false;
-	if (reg >= BLT_RING_BASE &&
-	    reg < BLT_RING_BASE + 0xff)
-		return false;
-
-	if (reg == PGTBL_ER)
-		return false;
-
-	if (reg >= IPEIR_I965 &&
-	    reg < HWSTAM)
-		return false;
-
-	if (reg == MI_MODE)
-		return false;
-
-	if (reg == GFX_MODE_GEN7)
-		return false;
-
-	if (reg == RENDER_HWS_PGA_GEN7 ||
-	    reg == BSD_HWS_PGA_GEN7 ||
-	    reg == BLT_HWS_PGA_GEN7)
-		return false;
-
-	if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL ||
-	    reg == GEN6_BSD_RNCID)
-		return false;
-
-	if (reg == GEN6_BLITTER_ECOSKPD)
-		return false;
-
-	if (reg >= 0x4000c &&
-	    reg <= 0x4002c)
-		return false;
-
-	if (reg >= 0x4f000 &&
-	    reg <= 0x4f08f)
-		return false;
-
-	if (reg >= 0x4f100 &&
-	    reg <= 0x4f11f)
-		return false;
-
-	if (reg >= VLV_MASTER_IER &&
-	    reg <= GEN6_PMIER)
-		return false;
-
-	if (reg >= FENCE_REG_SANDYBRIDGE_0 &&
-	    reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8)))
-		return false;
-
-	if (reg >= VLV_IIR_RW &&
-	    reg <= VLV_ISR)
-		return false;
-
-	if (reg == FORCEWAKE_VLV ||
-	    reg == FORCEWAKE_ACK_VLV)
-		return false;
-
-	if (reg == GEN6_GDRST)
-		return false;
-
-	switch (reg) {
-	case _3D_CHICKEN3:
-	case IVB_CHICKEN3:
-	case GEN7_COMMON_SLICE_CHICKEN1:
-	case GEN7_L3CNTLREG1:
-	case GEN7_L3_CHICKEN_MODE_REGISTER:
-	case GEN7_ROW_CHICKEN2:
-	case GEN7_L3SQCREG4:
-	case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG:
-	case GEN7_HALF_SLICE_CHICKEN1:
-	case GEN6_MBCTL:
-	case GEN6_UCGCTL2:
-		return false;
-	default:
-		break;
-	}
-
-	return true;
-}
-
 static void
 ilk_dummy_write(struct drm_i915_private *dev_priv)
 {
@@ -1238,8 +1142,6 @@ u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
 		if (dev_priv->forcewake_count == 0) \
 			dev_priv->gt.force_wake_put(dev_priv); \
 		spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \
-	} else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
-		val = read##y(dev_priv->regs + reg + 0x180000);		\
 	} else { \
 		val = read##y(dev_priv->regs + reg); \
 	} \
@@ -1266,11 +1168,7 @@ void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
 		DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \
 		I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \
 	} \
-	if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
-		write##y(val, dev_priv->regs + reg + 0x180000);		\
-	} else {							\
 	write##y(val, dev_priv->regs + reg); \
-	}								\
 	if (unlikely(__fifo_ret)) { \
 		gen6_gt_check_fifodbg(dev_priv); \
 	} \