[PATCH 18/23] drm/i915: Commit color changes to CRTC

[Shashank Sharma]

The color correction blob values are loaded during set_property
calls. This patch adds a function to find the blob and apply the
correction values to the display registers, during the atomic
commit call.

Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi at gmail.com>
---
 drivers/gpu/drm/i915/intel_color_manager.c | 46 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_display.c       |  2 ++
 drivers/gpu/drm/i915/intel_drv.h           |  2 ++
 3 files changed, 50 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_color_manager.c b/drivers/gpu/drm/i915/intel_color_manager.c
index 22b708f..d33a2be 100644
--- a/drivers/gpu/drm/i915/intel_color_manager.c
+++ b/drivers/gpu/drm/i915/intel_color_manager.c
@@ -406,6 +406,52 @@ int intel_color_manager_set_pipe_gamma(struct drm_device *dev,
 	return 0;
 }
 
+void intel_color_manager_crtc_commit(struct drm_device *dev,
+		struct drm_crtc_state *crtc_state)
+{
+	struct drm_property_blob *blob;
+	struct drm_crtc *crtc = crtc_state->crtc;
+	int ret = -EINVAL;
+
+	blob = crtc_state->palette_after_ctm_blob;
+	if (blob) {
+		/* Gamma correction is platform specific */
+		if (IS_CHERRYVIEW(dev))
+			ret = chv_set_gamma(dev, blob, crtc);
+
+		if (ret)
+			DRM_ERROR("set Gamma correction failed\n");
+		else
+			DRM_DEBUG_DRIVER("Gamma correction success\n");
+	}
+
+	blob = crtc_state->palette_before_ctm_blob;
+	if (blob) {
+		/* degamma correction */
+		if (IS_CHERRYVIEW(dev))
+			ret = chv_set_degamma(dev, blob, crtc);
+
+		if (ret)
+			DRM_ERROR("set degamma correction failed\n");
+		else
+			DRM_DEBUG_DRIVER("degamma correction success\n");
+	}
+
+	blob = crtc_state->ctm_blob;
+	if (blob) {
+		/* CSC correction */
+		if (IS_CHERRYVIEW(dev))
+			ret = chv_set_csc(dev, blob, crtc);
+
+		if (ret)
+			DRM_ERROR("set CSC correction failed\n");
+		else
+			DRM_DEBUG_DRIVER("CSC correction success\n");
+	}
+
+}
+
+
 int get_pipe_capabilities(struct drm_device *dev,
 		struct drm_palette_caps *palette_caps, struct drm_crtc *crtc)
 {
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 010acca..9b9d267 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13487,6 +13487,8 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
 		intel_update_pipe_config(intel_crtc, old_intel_state);
 	else if (INTEL_INFO(dev)->gen >= 9)
 		skl_detach_scalers(intel_crtc);
+
+	intel_color_manager_crtc_commit(dev, crtc->state);
 }
 
 static void intel_finish_crtc_commit(struct drm_crtc *crtc,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 4d571a2f..f87a99d 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1476,4 +1476,6 @@ int intel_color_manager_set_pipe_degamma(struct drm_device *dev,
 int intel_color_manager_set_pipe_csc(struct drm_device *dev,
 		struct drm_crtc_state *crtc_state,
 		struct drm_mode_object *obj, uint32_t blob_id);
+void intel_color_manager_crtc_commit(struct drm_device *dev,
+		struct drm_crtc_state *crtc_state);
 #endif /* __INTEL_DRV_H__ */
-- 
1.9.1