[RFC v1 6/6] drm/i915: Enable plane color features

[Uma Shankar]

Enable and initilaize plane color features.

Signed-off-by: Uma Shankar <uma.shankar at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |    8 ++++++++
 drivers/gpu/drm/i915/intel_color.c   |   14 ++++++++++++++
 drivers/gpu/drm/i915/intel_display.c |    4 ++++
 drivers/gpu/drm/i915/intel_drv.h     |    9 +++++++++
 drivers/gpu/drm/i915/intel_sprite.c  |    4 ++++
 5 files changed, 39 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1cc31a5..0d3e93f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -742,6 +742,9 @@ struct drm_i915_display_funcs {
 
 	void (*load_csc_matrix)(struct drm_crtc_state *crtc_state);
 	void (*load_luts)(struct drm_crtc_state *crtc_state);
+	/* Add Plane Color callbacks */
+	void (*load_plane_csc_matrix)(struct drm_plane_state *plane_state);
+	void (*load_plane_luts)(struct drm_plane_state *plane_state);
 };
 
 #define CSR_VERSION(major, minor)	((major) << 16 | (minor))
@@ -880,6 +883,11 @@ struct intel_device_info {
 		u16 degamma_lut_size;
 		u16 gamma_lut_size;
 	} color;
+
+	struct plane_color_luts {
+		u16 plane_degamma_lut_size;
+		u16 plane_gamma_lut_size;
+	} plane_color;
 };
 
 struct intel_display_error_state;
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index ff9ecd2..b9042b6 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -643,6 +643,20 @@ int intel_color_check(struct drm_crtc *crtc,
 	return -EINVAL;
 }
 
+void intel_plane_color_init(struct drm_plane *plane)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->dev);
+
+	drm_mode_plane_set_gamma_size(plane, 16);
+
+	/* Enable color management support when we have degamma & gamma LUTs. */
+	if (INTEL_INFO(dev_priv)->plane_color.plane_degamma_lut_size != 0 &&
+	    INTEL_INFO(dev_priv)->plane_color.plane_gamma_lut_size != 0)
+		drm_plane_enable_color_mgmt(plane,
+		INTEL_INFO(dev_priv)->plane_color.plane_degamma_lut_size,
+		true, INTEL_INFO(dev_priv)->plane_color.plane_gamma_lut_size);
+}
+
 void intel_color_init(struct drm_crtc *crtc)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 524217d..b7af09a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13302,6 +13302,10 @@ static bool intel_cursor_plane_format_mod_supported(struct drm_plane *plane,
 						   DRM_MODE_ROTATE_0,
 						   supported_rotations);
 
+	/* Add Plane Color properties */
+	if (INTEL_GEN(dev_priv) >= 9)
+		intel_plane_color_init(&primary->base);
+
 	drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
 
 	return primary;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 3078076..740339a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -440,6 +440,14 @@ struct intel_plane_state {
 	 */
 	int scaler_id;
 
+	/*
+	 * Use reduced/limited/broadcast rbg range, compressing from the full
+	 * range fed into the crtcs.
+	 */
+	bool limited_color_range;
+	/* Gamma mode programmed on the plane */
+	uint32_t gamma_mode;
+
 	struct drm_intel_sprite_colorkey ckey;
 };
 
@@ -2000,6 +2008,7 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 int intel_color_check(struct drm_crtc *crtc, struct drm_crtc_state *state);
 void intel_color_set_csc(struct drm_crtc_state *crtc_state);
 void intel_color_load_luts(struct drm_crtc_state *crtc_state);
+void intel_plane_color_init(struct drm_plane *plane);
 
 /* intel_lspcon.c */
 bool lspcon_init(struct intel_digital_port *intel_dig_port);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index b0d6e3e..13381d0 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1324,6 +1324,10 @@ struct intel_plane *
 					   DRM_MODE_ROTATE_0,
 					   supported_rotations);
 
+	/* Add Plane Color properties */
+	if (INTEL_GEN(dev_priv) >= 9)
+		intel_plane_color_init(&intel_plane->base);
+
 	drm_plane_helper_add(&intel_plane->base, &intel_plane_helper_funcs);
 
 	return intel_plane;
-- 
1.7.9.5