[PATCH 11/23] drm/i915: Add pipe deGamma correction handlers

[Shashank Sharma <shashank.sharma@xxxxxxxxx>]

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 committed in the atomic commit path.

Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
Signed-off-by: Kausal Malladi <kausalmalladi@xxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_atomic.c        | 10 ++++++++++
 drivers/gpu/drm/i915/intel_color_manager.c | 20 ++++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h           |  4 +++-
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 0b61fef..b504b4f 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -322,6 +322,10 @@ 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;
 }
@@ -340,6 +344,12 @@ int intel_crtc_atomic_get_property(struct drm_crtc *crtc,
 		goto found;
 	}
 
+	if (property == config->cm_palette_before_ctm_property) {
+		*val = (state->palette_before_ctm_blob) ?
+			state->palette_before_ctm_blob->base.id : 0;
+		goto found;
+	}
+
 	DRM_DEBUG_KMS("Unknown crtc property '%s'\n", property->name);
 	return -EINVAL;
 
diff --git a/drivers/gpu/drm/i915/intel_color_manager.c b/drivers/gpu/drm/i915/intel_color_manager.c
index 9421bb6..8890b09 100644
--- a/drivers/gpu/drm/i915/intel_color_manager.c
+++ b/drivers/gpu/drm/i915/intel_color_manager.c
@@ -27,6 +27,26 @@
 
 #include "intel_color_manager.h"
 
+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 d0193e2..0298dd0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1470,5 +1470,7 @@ extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
 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);
 #endif /* __INTEL_DRV_H__ */
-- 
1.9.1

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