Regards
Shashank

On 9/22/2015 6:38 PM, Daniel Vetter wrote:
On Wed, Sep 16, 2015 at 11:07:02PM +0530, Shashank Sharma wrote:
From: Kausal Malladi <[email protected]>

Color Manager framework defines a color correction property for color
space transformation and Gamut mapping. This property is called CTM (Color
Transformation Matrix).

This patch adds a new structure in DRM layer for CTM.
This structure can be used by all user space agents to
configure CTM coefficients for color correction.

Signed-off-by: Shashank Sharma <[email protected]>
Signed-off-by: Kausal Malladi <[email protected]>
---
  include/uapi/drm/drm.h | 12 ++++++++++++
  1 file changed, 12 insertions(+)

diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index f72b916..9580772 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -867,6 +867,18 @@ struct drm_palette {
        struct drm_r32g32b32 lut[0];
  };

+struct drm_ctm {
+       /* Structure version. Should be 1 currently */
+       __u32 version;

Same thing here, no version needed for properties.
Agree.
-Shashank

+       /*
+        * Each value is in S31.32 format.
+        * This is 3x3 matrix in row major format.
+        * Integer part will be clipped to nearest
+        * max/min boundary as supported by the HW platform.
+        */
+       __s64 ctm_coeff[9];
+};
+
  /* typedef area */
  #ifndef __KERNEL__
  typedef struct drm_clip_rect drm_clip_rect_t;
--
1.9.1

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