[PATCH 10/16] drm/i915: Add set_property handler for pipe Gamma correction on CHV/BSW

[Kausal Malladi]

This patch adds set_property handler for Gamma color correction and
enhancement capability at Pipe level on CHV/BSW platform. The set
function just attaches the Gamma blob to CRTC state, that later gets
committed using atomic path.

Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
Signed-off-by: Kausal Malladi <Kausal.Malladi at intel.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 d873bda..72d6b37 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -473,6 +473,13 @@ int intel_crtc_atomic_set_property(struct drm_crtc *crtc,
                                   struct drm_property *property,
                                   uint64_t val)
 {
+       struct drm_device *dev = crtc->dev;
+       struct drm_mode_config *config = &dev->mode_config;
+
+       if (property == config->prop_palette_after_ctm)
+               return intel_color_manager_set_pipe_gamma(dev, state,
+                               &crtc->base, val);
+
        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 def20d0f..70c0d42 100644
--- a/drivers/gpu/drm/i915/intel_color_manager.c
+++ b/drivers/gpu/drm/i915/intel_color_manager.c
@@ -27,6 +27,25 @@

 #include "intel_color_manager.h"

+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)
+{
+       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_after_ctm_blob)
+               
drm_property_unreference_blob(crtc_state->palette_after_ctm_blob);
+
+       crtc_state->palette_after_ctm_blob = blob;
+       return 0;
+}
+
 int get_chv_pipe_gamma_capabilities(struct drm_device *dev,
                struct drm_palette_caps *palette_caps, struct drm_crtc *crtc)
 {
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1e61036..45c42f0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1453,5 +1453,8 @@ extern const struct drm_plane_helper_funcs 
intel_plane_helper_funcs;
 /* intel_color_manager.c */
 void intel_attach_color_properties_to_crtc(struct drm_device *dev,
                struct drm_mode_object *mode_obj);
+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);

 #endif /* __INTEL_DRV_H__ */
-- 
2.4.5