[PATCH 10/18] drm/i915: Add pipe deGamma correction handlers

[Shashank Sharma]

From: Kausal Malladi <kausalmalladi at gmail.com>

This patch adds set_property and get_property handlers for deGamma
color correction capability at Pipe level.

Set function just attaches the deGamma correction blob to CRTC state, which
will be later commited in the atomic commit path.

Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi at gmail.com>
---
 drivers/gpu/drm/i915/intel_atomic.c        |  7 +++++++
 drivers/gpu/drm/i915/intel_color_manager.c | 19 +++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h           |  3 +++
 3 files changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 9f55e6c..1d8cb09 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -331,6 +331,10 @@ int intel_crtc_atomic_set_property(struct drm_crtc *crtc,
 		return intel_color_manager_set_pipe_gamma(dev, state,
 				&crtc->base, val);
 
+	if (property == config->cm_palette_before_ctm_property)
+		return intel_color_manager_set_pipe_degamma(dev, state,
+				&crtc->base, val);
+
 	DRM_DEBUG_KMS("Unknown crtc property '%s'\n", property->name);
 	return -EINVAL;
 }
@@ -346,6 +350,9 @@ int intel_crtc_atomic_get_property(struct drm_crtc *crtc,
 	if (property == config->cm_palette_after_ctm_property)
 		*val = (state->palette_after_ctm_blob) ?
 			state->palette_after_ctm_blob->base.id : 0;
+	if (property == config->cm_palette_before_ctm_property)
+		*val = (state->palette_before_ctm_blob) ?
+			state->palette_before_ctm_blob->base.id : 0;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/intel_color_manager.c b/drivers/gpu/drm/i915/intel_color_manager.c
index f8c8d26..5fc8e41 100644
--- a/drivers/gpu/drm/i915/intel_color_manager.c
+++ b/drivers/gpu/drm/i915/intel_color_manager.c
@@ -170,6 +170,25 @@ void intel_color_manager_crtc_commit(struct drm_device *dev,
 	}
 }
 
+int intel_color_manager_set_pipe_degamma(struct drm_device *dev,
+		struct drm_crtc_state *crtc_state,
+		struct drm_mode_object *obj, uint32_t blob_id)
+{
+	struct drm_property_blob *blob;
+
+	blob = drm_property_lookup_blob(dev, blob_id);
+	if (!blob) {
+		DRM_ERROR("Invalid Blob ID\n");
+		return -EINVAL;
+	}
+
+	if (crtc_state->palette_before_ctm_blob)
+		drm_property_unreference_blob(crtc_state->palette_before_ctm_blob);
+
+	crtc_state->palette_before_ctm_blob = blob;
+	return 0;
+}
+
 int intel_color_manager_set_pipe_gamma(struct drm_device *dev,
 		struct drm_crtc_state *crtc_state,
 		struct drm_mode_object *obj, uint32_t blob_id)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index de3e6e7..d3b42ec 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1444,6 +1444,9 @@ void intel_attach_color_properties_to_crtc(struct drm_device *dev,
 int intel_color_manager_set_pipe_gamma(struct drm_device *dev,
 		struct drm_crtc_state *crtc_state,
 		struct drm_mode_object *obj, uint32_t blob_id);
+int intel_color_manager_set_pipe_degamma(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);
 
-- 
1.9.1