diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 7d03a74..1f6f4f0 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -2663,7 +2663,7 @@ void intel_crt_init(struct drm_device *dev)
 	<td valign="top" >TBD</td>
 	</tr>
 	<tr>
-	<td rowspan="21" valign="top" >i915</td>
+	<td rowspan="22" valign="top" >i915</td>
 	<td rowspan="2" valign="top" >Generic</td>
 	<td valign="top" >"Broadcast RGB"</td>
 	<td valign="top" >ENUM</td>
@@ -2687,6 +2687,14 @@ void intel_crt_init(struct drm_device *dev)
 	<td valign="top" >TBD</td>
 	</tr>
 	<tr>
+	<td rowspan="1" valign="top" >CRTC</td>
+	<td valign="top" >“background_color”</td>
+	<td valign="top" >Range</td>
+	<td valign="top" >Min=0, Max=0xFFFFFF</td>
+	<td valign="top" >CRTC</td>
+	<td valign="top" >Background color in 16bpc BGR (B-MSB, R-LSB)</td>
+	</tr>
+	<tr>
 	<td rowspan="17" valign="top" >SDVO-TV</td>
 	<td valign="top" >“mode”</td>
 	<td valign="top" >ENUM</td>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 84b37d7..795b53f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6579,6 +6579,16 @@ enum kdiv {
 #define PIPE_CSC_POSTOFF_ME(pipe) _PIPE(pipe, _PIPE_A_CSC_POSTOFF_ME, _PIPE_B_CSC_POSTOFF_ME)
 #define PIPE_CSC_POSTOFF_LO(pipe) _PIPE(pipe, _PIPE_A_CSC_POSTOFF_LO, _PIPE_B_CSC_POSTOFF_LO)
 
+/* Skylake pipe bottom color */
+#define _PIPE_BOTTOM_COLOR_A        0x70034
+#define _PIPE_BOTTOM_COLOR_B        0x71034
+#define _PIPE_BOTTOM_COLOR_C        0x72034
+#define PIPE_BOTTOM_GAMMA_ENABLE   (1 << 31)
+#define PIPE_BOTTOM_CSC_ENABLE     (1 << 30)
+#define PIPE_BOTTOM_COLOR_MASK     0x3FFFFFFF
+#define PIPE_BOTTOM_COLOR(pipe) _PIPE3(pipe, _PIPE_BOTTOM_COLOR_A, \
+	_PIPE_BOTTOM_COLOR_B, _PIPE_BOTTOM_COLOR_C)
+
 /* VLV MIPI registers */
 
 #define _MIPIA_PORT_CTRL			(VLV_DISPLAY_BASE + 0x61190)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d162dca..d4b7c0c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6951,6 +6951,7 @@ static void intel_set_pipe_csc(struct drm_crtc *crtc)
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	int pipe = intel_crtc->pipe;
 	uint16_t coeff = 0x7800; /* 1.0 */
+	uint32_t color;
 
 	/*
 	 * TODO: Check what kind of values actually come out of the pipe
@@ -6999,6 +7000,14 @@ static void intel_set_pipe_csc(struct drm_crtc *crtc)
 
 		I915_WRITE(PIPE_CSC_MODE(pipe), mode);
 	}
+
+	/* set csc for bottom color */
+	if (INTEL_INFO(dev)->gen >= 9) {
+		color = I915_READ(PIPE_BOTTOM_COLOR(pipe));
+		color |= PIPE_BOTTOM_CSC_ENABLE;
+		I915_WRITE(PIPE_BOTTOM_COLOR(pipe), color);
+		intel_crtc->background_color |= PIPE_BOTTOM_CSC_ENABLE;
+	}
 }
 
 static void haswell_set_pipeconf(struct drm_crtc *crtc)
@@ -8568,6 +8577,9 @@ static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 {
 	int end = (start + size > 256) ? 256 : start + size, i;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	uint32_t color;
 
 	for (i = start; i < end; i++) {
 		intel_crtc->lut_r[i] = red[i] >> 8;
@@ -8576,6 +8588,14 @@ static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 	}
 
 	intel_crtc_load_lut(crtc);
+
+	if (INTEL_INFO(dev)->gen >= 9) {
+		/* set gamma for bottom color */
+		color = I915_READ(PIPE_BOTTOM_COLOR(intel_crtc->pipe));
+		color |= PIPE_BOTTOM_GAMMA_ENABLE;
+		I915_WRITE(PIPE_BOTTOM_COLOR(intel_crtc->pipe), color);
+		intel_crtc->background_color |= PIPE_BOTTOM_GAMMA_ENABLE;
+	}
 }
 
 /* VESA 640x480x72Hz mode to set on the pipe */
@@ -9350,6 +9370,12 @@ static void intel_crtc_destroy(struct drm_crtc *crtc)
 		kfree(work);
 	}
 
+	if (dev->mode_config.background_color_property) {
+		drm_property_destroy(crtc->dev,
+			dev->mode_config.background_color_property);
+		dev->mode_config.background_color_property = NULL;
+	}
+
 	drm_crtc_cleanup(crtc);
 
 	kfree(intel_crtc);
@@ -10131,6 +10157,33 @@ out_hang:
 	return ret;
 }
 
+static int intel_crtc_set_property(struct drm_crtc *crtc,
+	struct drm_property *property, uint64_t val)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	int i;
+
+	if (INTEL_INFO(dev)->gen >= 9) {
+		if (property == dev->mode_config.background_color_property) {
+			uint64_t bottom;
+			bottom = intel_crtc->background_color & ~PIPE_BOTTOM_COLOR_MASK;
+
+			/* BGR 16bpc ==> RGB 10bpc */
+			for (i = 0; i < 3; i++)
+				bottom |=
+					((((val >> (i*16)) & 0xFFFF) * 0x3FF/0xFFFF) << ((2-i)*10));
+
+			I915_WRITE(PIPE_BOTTOM_COLOR(intel_crtc->pipe), (uint32_t) bottom);
+			intel_crtc->background_color = (uint32_t) bottom;
+		}
+		return 0;
+	}
+	return -EINVAL;
+}
+
+
 static struct drm_crtc_helper_funcs intel_helper_funcs = {
 	.mode_set_base_atomic = intel_pipe_set_base_atomic,
 	.load_lut = intel_crtc_load_lut,
@@ -11258,6 +11311,11 @@ static int __intel_set_mode(struct drm_crtc *crtc,
 	if (dev_priv->display.modeset_global_resources)
 		dev_priv->display.modeset_global_resources(dev);
 
+	/* Set background color */
+	if (INTEL_INFO(dev)->gen >= 9)
+		I915_WRITE(PIPE_BOTTOM_COLOR(to_intel_crtc(crtc)->pipe),
+			to_intel_crtc(crtc)->background_color);
+
 	/* Set up the DPLL and any encoders state that needs to adjust or depend
 	 * on the DPLL.
 	 */
@@ -11760,6 +11818,7 @@ static const struct drm_crtc_funcs intel_crtc_funcs = {
 	.set_config = intel_crtc_set_config,
 	.destroy = intel_crtc_destroy,
 	.page_flip = intel_crtc_page_flip,
+	.set_property = intel_crtc_set_property,
 };
 
 static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
@@ -12212,6 +12271,20 @@ static void intel_crtc_init(struct drm_device *dev, int pipe)
 	drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
 
 	WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
+
+	/* background color = 24 bit : MSB BGR 8bpc LSB */
+	intel_crtc->background_color = 0;
+	if (INTEL_INFO(dev)->gen >= 9 &&
+		!dev->mode_config.background_color_property)
+		dev->mode_config.background_color_property =
+			drm_property_create_range(dev, 0, "background_color", 0,
+				0xFFFFFFFFFFFF);
+
+	if (dev->mode_config.background_color_property)
+		drm_object_attach_property(&intel_crtc->base.base,
+			dev->mode_config.background_color_property,
+			intel_crtc->background_color);
+
 	return;
 
 fail:
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c2830d8..0185dbe 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -445,6 +445,8 @@ struct intel_crtc {
 
 	int scanline_offset;
 	struct intel_mmio_flip mmio_flip;
+
+	uint32_t background_color;
 };
 
 struct intel_plane_wm_parameters {
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 31344bf..27bcd01 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -827,6 +827,9 @@ struct drm_mode_config {
 	struct drm_property *plane_type_property;
 	struct drm_property *rotation_property;
 
+	/* crtc properties */
+	struct drm_property *background_color_property;
+
 	/* DVI-I properties */
 	struct drm_property *dvi_i_subconnector_property;
 	struct drm_property *dvi_i_select_subconnector_property;
