[PATCH] drm/i915: Enable Plane Input CSC for YUV to RGB Conversion

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Plane input CSC needs to be enabled to convert frambuffers from
YUV to RGB. This is needed for bottom 3 planes on ICL, rest of
the planes have hardcoded conversion and taken care by the legacy
code.

This patch defines the plane input csc registers and co-efficient
values for YUV to RGB conversion in BT709 and BT601 formats. It
programs the coefficients and enables the plane input csc unit
in hardware.

Note: This is currently untested and floated to get an early feedback
on the design and implementation for this feature. In parallel,
I will test this on actual ICL hardware and confirm with planar
formats.

Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_reg.h      | 243 +++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_display.c |  76 ++++++++++-
 2 files changed, 313 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8bd61f9..f0f6f7c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6553,6 +6553,7 @@ enum {
 #define _PLANE_COLOR_CTL_3_A			0x703CC /* GLK+ */
 #define   PLANE_COLOR_PIPE_GAMMA_ENABLE		(1 << 30) /* Pre-ICL */
 #define   PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE	(1 << 28)
+#define   PLANE_COLOR_INPUT_CSC_ENABLE		(1 << 20) /* Pre-ICL */
 #define   PLANE_COLOR_PIPE_CSC_ENABLE		(1 << 23) /* Pre-ICL */
 #define   PLANE_COLOR_CSC_MODE_BYPASS			(0 << 17)
 #define   PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709		(1 << 17)
@@ -6569,6 +6570,248 @@ enum {
 #define _PLANE_NV12_BUF_CFG_1_A		0x70278
 #define _PLANE_NV12_BUF_CFG_2_A		0x70378
 
+/* Input CSC Register Definitions */
+#define _PLANE_INPUT_CSC_RY_GY_1_A	0x701E0
+#define _PLANE_INPUT_CSC_RY_GY_2_A	0x702E0
+#define _PLANE_INPUT_CSC_RY_GY_3_A	0x703E0
+
+#define _PLANE_INPUT_CSC_RY_GY_1_B	0x711E0
+#define _PLANE_INPUT_CSC_RY_GY_2_B	0x712E0
+#define _PLANE_INPUT_CSC_RY_GY_3_B	0x713E0
+
+#define _PLANE_INPUT_CSC_RY_GY_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RY_GY_1_A, \
+	     _PLANE_INPUT_CSC_RY_GY_1_B)
+#define _PLANE_INPUT_CSC_RY_GY_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RY_GY_2_A, \
+	     _PLANE_INPUT_CSC_RY_GY_2_B)
+#define PLANE_INPUT_CSC_RY_GY(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_RY_GY_1(pipe), \
+		    _PLANE_INPUT_CSC_RY_GY_2(pipe))
+
+#define _PLANE_INPUT_CSC_BY_1_A		0x701E4
+#define _PLANE_INPUT_CSC_BY_2_A		0x702E4
+#define _PLANE_INPUT_CSC_BY_3_A		0x703E4
+
+#define _PLANE_INPUT_CSC_BY_1_B		0x711E4
+#define _PLANE_INPUT_CSC_BY_2_B		0x712E4
+#define _PLANE_INPUT_CSC_BY_3_B		0x713E4
+
+#define _PLANE_INPUT_CSC_BY_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BY_1_A, \
+	     _PLANE_INPUT_CSC_BY_1_B)
+#define _PLANE_INPUT_CSC_BY_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BY_2_A, \
+	     _PLANE_INPUT_CSC_BY_2_B)
+#define PLANE_INPUT_CSC_BY(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_BY_1(pipe), \
+		    _PLANE_INPUT_CSC_BY_2(pipe))
+
+#define _PLANE_INPUT_CSC_RU_GU_1_A	0x701E8
+#define _PLANE_INPUT_CSC_RU_GU_2_A	0x702E8
+#define _PLANE_INPUT_CSC_RU_GU_3_A	0x703E8
+
+#define _PLANE_INPUT_CSC_RU_GU_1_B	0x711E8
+#define _PLANE_INPUT_CSC_RU_GU_2_B	0x712E8
+#define _PLANE_INPUT_CSC_RU_GU_3_B	0x713E8
+
+#define _PLANE_INPUT_CSC_RU_GU_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RU_GU_1_A, \
+	     _PLANE_INPUT_CSC_RU_GU_1_B)
+#define _PLANE_INPUT_CSC_RU_GU_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RU_GU_2_A, \
+	     _PLANE_INPUT_CSC_RU_GU_2_B)
+#define PLANE_INPUT_CSC_RU_GU(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_RU_GU_1(pipe), \
+		    _PLANE_INPUT_CSC_RU_GU_2(pipe))
+
+#define _PLANE_INPUT_CSC_BU_1_A		0x701EC
+#define _PLANE_INPUT_CSC_BU_2_A		0x702EC
+#define _PLANE_INPUT_CSC_BU_3_A		0x703EC
+
+#define _PLANE_INPUT_CSC_BU_1_B		0x711EC
+#define _PLANE_INPUT_CSC_BU_2_B		0x712EC
+#define _PLANE_INPUT_CSC_BU_3_B		0x713EC
+
+#define _PLANE_INPUT_CSC_BU_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BU_1_A, \
+	     _PLANE_INPUT_CSC_BU_1_B)
+#define _PLANE_INPUT_CSC_BU_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BU_2_A, \
+	     _PLANE_INPUT_CSC_BU_2_B)
+#define PLANE_INPUT_CSC_BU(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_BU_1(pipe), \
+		    _PLANE_INPUT_CSC_BU_2(pipe))
+
+#define _PLANE_INPUT_CSC_RV_GV_1_A	0x701F0
+#define _PLANE_INPUT_CSC_RV_GV_2_A	0x702F0
+#define _PLANE_INPUT_CSC_RV_GV_3_A	0x703F0
+
+#define _PLANE_INPUT_CSC_RV_GV_1_B	0x711F0
+#define _PLANE_INPUT_CSC_RV_GV_2_B	0x712F0
+#define _PLANE_INPUT_CSC_RV_GV_3_B	0x713F0
+
+#define _PLANE_INPUT_CSC_RV_GV_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RV_GV_1_A, \
+	     _PLANE_INPUT_CSC_RV_GV_1_B)
+#define _PLANE_INPUT_CSC_RV_GV_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_RV_GV_2_A, \
+	     _PLANE_INPUT_CSC_RV_GV_2_B)
+#define PLANE_INPUT_CSC_RV_GV(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_RV_GV_1(pipe), \
+		    _PLANE_INPUT_CSC_RV_GV_2(pipe))
+
+#define _PLANE_INPUT_CSC_BV_1_A		0x701F4
+#define _PLANE_INPUT_CSC_BV_2_A		0x702F4
+#define _PLANE_INPUT_CSC_BV_3_A		0x703F4
+
+#define _PLANE_INPUT_CSC_BV_1_B		0x711F4
+#define _PLANE_INPUT_CSC_BV_2_B		0x712F4
+#define _PLANE_INPUT_CSC_BV_3_B		0x713F4
+
+#define _PLANE_INPUT_CSC_BV_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BV_1_A, \
+	     _PLANE_INPUT_CSC_BV_1_B)
+#define _PLANE_INPUT_CSC_BV_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_BV_2_A, \
+	     _PLANE_INPUT_CSC_BV_2_B)
+#define PLANE_INPUT_CSC_BV(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_BV_1(pipe), \
+		    _PLANE_INPUT_CSC_BV_2(pipe))
+
+#define _PLANE_INPUT_CSC_PREOFF_HI_1_A		0x701F8
+#define _PLANE_INPUT_CSC_PREOFF_HI_2_A		0x702F8
+#define _PLANE_INPUT_CSC_PREOFF_HI_3_A		0x703F8
+
+#define _PLANE_INPUT_CSC_PREOFF_HI_1_B		0x711F8
+#define _PLANE_INPUT_CSC_PREOFF_HI_2_B		0x712F8
+#define _PLANE_INPUT_CSC_PREOFF_HI_3_B		0x713F8
+
+#define _PLANE_INPUT_CSC_PREOFF_HI_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_HI_1_A, \
+	     _PLANE_INPUT_CSC_PREOFF_HI_1_B)
+#define _PLANE_INPUT_CSC_PREOFF_HI_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_HI_2_A, \
+	     _PLANE_INPUT_CSC_PREOFF_HI_2_B)
+#define PLANE_INPUT_CSC_PREOFF_HI(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_PREOFF_HI_1(pipe), \
+		    _PLANE_INPUT_CSC_PREOFF_HI_2(pipe))
+
+#define _PLANE_INPUT_CSC_PREOFF_ME_1_A		0x701FC
+#define _PLANE_INPUT_CSC_PREOFF_ME_2_A		0x702FC
+#define _PLANE_INPUT_CSC_PREOFF_ME_3_A		0x703FC
+
+#define _PLANE_INPUT_CSC_PREOFF_ME_1_B		0x711FC
+#define _PLANE_INPUT_CSC_PREOFF_ME_2_B		0x712FC
+#define _PLANE_INPUT_CSC_PREOFF_ME_3_B		0x713FC
+
+#define _PLANE_INPUT_CSC_PREOFF_ME_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_ME_1_A, \
+	     _PLANE_INPUT_CSC_PREOFF_ME_1_B)
+#define _PLANE_INPUT_CSC_PREOFF_ME_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_ME_2_A, \
+	     _PLANE_INPUT_CSC_PREOFF_ME_2_B)
+#define PLANE_INPUT_CSC_PREOFF_ME(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_PREOFF_ME_1(pipe), \
+		    _PLANE_INPUT_CSC_PREOFF_ME_2(pipe))
+
+#define _PLANE_INPUT_CSC_PREOFF_LO_1_A		0x70200
+#define _PLANE_INPUT_CSC_PREOFF_LO_2_A		0x70300
+#define _PLANE_INPUT_CSC_PREOFF_LO_3_A		0x70400
+
+#define _PLANE_INPUT_CSC_PREOFF_LO_1_B		0x71200
+#define _PLANE_INPUT_CSC_PREOFF_LO_2_B		0x71300
+#define _PLANE_INPUT_CSC_PREOFF_LO_3_B		0x71400
+
+#define _PLANE_INPUT_CSC_PREOFF_LO_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_LO_1_A, \
+	     _PLANE_INPUT_CSC_PREOFF_LO_1_B)
+#define _PLANE_INPUT_CSC_PREOFF_LO_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_PREOFF_LO_2_A, \
+	     _PLANE_INPUT_CSC_PREOFF_LO_2_B)
+#define PLANE_INPUT_CSC_PREOFF_LO(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_PREOFF_LO_1(pipe), \
+		    _PLANE_INPUT_CSC_PREOFF_LO_2(pipe))
+
+#define _PLANE_INPUT_CSC_POSTOFF_HI_1_A		0x70204
+#define _PLANE_INPUT_CSC_POSTOFF_HI_2_A		0x70304
+#define _PLANE_INPUT_CSC_POSTOFF_HI_3_A		0x70404
+
+#define _PLANE_INPUT_CSC_POSTOFF_HI_1_B		0x71204
+#define _PLANE_INPUT_CSC_POSTOFF_HI_2_B		0x71304
+#define _PLANE_INPUT_CSC_POSTOFF_HI_3_B		0x71404
+
+#define _PLANE_INPUT_CSC_POSTOFF_HI_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_HI_1_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_HI_1_B)
+#define _PLANE_INPUT_CSC_POSTOFF_HI_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_HI_2_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_HI_2_B)
+#define PLANE_INPUT_CSC_POSTOFF_HI(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_POSTOFF_HI_1(pipe), \
+		    _PLANE_INPUT_CSC_POSTOFF_HI_2(pipe))
+
+#define _PLANE_INPUT_CSC_POSTOFF_ME_1_A		0x70208
+#define _PLANE_INPUT_CSC_POSTOFF_ME_2_A		0x70308
+#define _PLANE_INPUT_CSC_POSTOFF_ME_3_A		0x70408
+
+#define _PLANE_INPUT_CSC_POSTOFF_ME_1_B		0x71208
+#define _PLANE_INPUT_CSC_POSTOFF_ME_2_B		0x71308
+#define _PLANE_INPUT_CSC_POSTOFF_ME_3_B		0x71408
+
+#define _PLANE_INPUT_CSC_POSTOFF_ME_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_ME_1_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_ME_1_B)
+#define _PLANE_INPUT_CSC_POSTOFF_ME_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_ME_2_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_ME_2_B)
+#define PLANE_INPUT_CSC_POSTOFF_ME(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_POSTOFF_ME_1(pipe), \
+		    _PLANE_INPUT_CSC_POSTOFF_ME_2(pipe))
+
+#define _PLANE_INPUT_CSC_POSTOFF_LO_1_A		0x7020C
+#define _PLANE_INPUT_CSC_POSTOFF_LO_2_A		0x7030C
+#define _PLANE_INPUT_CSC_POSTOFF_LO_3_A		0x7040C
+
+#define _PLANE_INPUT_CSC_POSTOFF_LO_1_B		0x7120C
+#define _PLANE_INPUT_CSC_POSTOFF_LO_2_B		0x7130C
+#define _PLANE_INPUT_CSC_POSTOFF_LO_3_B		0x7140C
+
+#define _PLANE_INPUT_CSC_POSTOFF_LO_1(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_LO_1_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_LO_1_B)
+#define _PLANE_INPUT_CSC_POSTOFF_LO_2(pipe)	\
+	_PIPE(pipe, _PLANE_INPUT_CSC_POSTOFF_LO_2_A, \
+	     _PLANE_INPUT_CSC_POSTOFF_LO_2_B)
+#define PLANE_INPUT_CSC_POSTOFF_LO(pipe, plane)	\
+	_MMIO_PLANE(plane, _PLANE_INPUT_CSC_POSTOFF_LO_1(pipe), \
+		    _PLANE_INPUT_CSC_POSTOFF_LO_2(pipe))
+/*
+ * These values are direct register values specified in the Bspec,
+ * for YUV->RGB Full Range conversion matrix (colorspace BT709)
+ */
+#define CSC_BT709_YUV_TO_RGB_RY_GY	0x7C987800
+#define CSC_BT709_YUV_TO_RGB_BY		0x0
+#define CSC_BT709_YUV_TO_RGB_RU_GU	0x9EF87800
+#define CSC_BT709_YUV_TO_RGB_BU		0xABF8
+#define CSC_BT709_YUV_TO_RGB_RV_GV	0x7800
+#define CSC_BT709_YUV_TO_RGB_BV		0x7ED8
+
+/*
+ * These values are direct register values specified in the Bspec,
+ * for YUV->RGB Full Range conversion matrix (colorspace BT601)
+ */
+#define CSC_BT601_YUV_TO_RGB_RY_GY	0x7AF87800
+#define CSC_BT601_YUV_TO_RGB_BY		0x0
+#define CSC_BT601_YUV_TO_RGB_RU_GU	0x8B287800
+#define CSC_BT601_YUV_TO_RGB_BU		0x9AC0
+#define CSC_BT601_YUV_TO_RGB_RV_GV	0x7800
+#define CSC_BT601_YUV_TO_RGB_BV		0x7DD8
+
+/* Preoffset values for YUV to RGB Conversion */
+#define PREOFF_YUV_TO_RGB_HI		0x800
+#define PREOFF_YUV_TO_RGB_ME		0xF00
+#define PREOFF_YUV_TO_RGB_LO		0x800
 
 #define _PLANE_CTL_1_B				0x71180
 #define _PLANE_CTL_2_B				0x71280
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fc7e3b0..38b41ed 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3689,12 +3689,66 @@ u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
 	return plane_ctl;
 }
 
+void icl_program_input_csc_coeff(const struct intel_crtc_state *crtc_state,
+				const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv =
+		to_i915(plane_state->base.plane->dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+	enum pipe pipe = crtc->pipe;
+	struct intel_plane *intel_plane =
+			to_intel_plane(plane_state->base.plane);
+	enum plane_id plane = intel_plane->id;
+
+	if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709) {
+		I915_WRITE(PLANE_INPUT_CSC_RY_GY(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_RY_GY);
+		I915_WRITE(PLANE_INPUT_CSC_BY(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_BY);
+		I915_WRITE(PLANE_INPUT_CSC_RU_GU(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_RU_GU);
+		I915_WRITE(PLANE_INPUT_CSC_BU(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_BU);
+		I915_WRITE(PLANE_INPUT_CSC_RV_GV(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_RV_GV);
+		I915_WRITE(PLANE_INPUT_CSC_BV(pipe, plane),
+			   CSC_BT709_YUV_TO_RGB_BV);
+	} else {
+		I915_WRITE(PLANE_INPUT_CSC_RY_GY(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_RY_GY);
+		I915_WRITE(PLANE_INPUT_CSC_BY(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_BY);
+		I915_WRITE(PLANE_INPUT_CSC_RU_GU(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_RU_GU);
+		I915_WRITE(PLANE_INPUT_CSC_BU(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_BU);
+		I915_WRITE(PLANE_INPUT_CSC_RV_GV(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_RV_GV);
+		I915_WRITE(PLANE_INPUT_CSC_BV(pipe, plane),
+			   CSC_BT601_YUV_TO_RGB_BV);
+	}
+
+	I915_WRITE(PLANE_INPUT_CSC_PREOFF_HI(pipe, plane),
+		   PREOFF_YUV_TO_RGB_HI);
+	I915_WRITE(PLANE_INPUT_CSC_PREOFF_ME(pipe, plane),
+		   PREOFF_YUV_TO_RGB_ME);
+	I915_WRITE(PLANE_INPUT_CSC_PREOFF_LO(pipe, plane),
+		   PREOFF_YUV_TO_RGB_LO);
+
+	I915_WRITE(PLANE_INPUT_CSC_POSTOFF_HI(pipe, plane), 0x0);
+	I915_WRITE(PLANE_INPUT_CSC_POSTOFF_ME(pipe, plane), 0x0);
+	I915_WRITE(PLANE_INPUT_CSC_POSTOFF_LO(pipe, plane), 0x0);
+}
+
 u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
 			const struct intel_plane_state *plane_state)
 {
 	struct drm_i915_private *dev_priv =
 		to_i915(plane_state->base.plane->dev);
 	const struct drm_framebuffer *fb = plane_state->base.fb;
+	struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
+	enum plane_id plane_id = plane->id;
+
 	u32 plane_color_ctl = 0;
 
 	if (INTEL_GEN(dev_priv) < 11) {
@@ -3705,13 +3759,23 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
 	plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state);
 
 	if (fb->format->is_yuv) {
-		if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
-			plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
-		else
-			plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
+		if (INTEL_GEN(dev_priv) < 11 || plane_id > 2) {
+			if (plane_state->base.color_encoding ==
+					DRM_COLOR_YCBCR_BT709)
+				plane_color_ctl |=
+					PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
+			else
+				plane_color_ctl |=
+					PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
 
-		if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
-			plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
+			if (plane_state->base.color_range ==
+					DRM_COLOR_YCBCR_FULL_RANGE)
+				plane_color_ctl |=
+				PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
+		} else {
+			icl_program_input_csc_coeff(crtc_state, plane_state);
+			plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE;
+		}
 	}
 
 	return plane_color_ctl;
-- 
1.9.1

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