[PATCH v6 07/23] drm: Add structure for CTM color property

From: Shashank Sharma <shashank.sharma@intel.com>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	emil.l.velikov@gmail.com, matthew.d.roper@intel.com,
	robert.bradford@intel.com, jim.bish@intel.com
Cc: annie.j.matheson@intel.com, kausalmalladi@gmail.com,
	daniel.vetter@intel.com
Subject: [PATCH v6 07/23] drm: Add structure for CTM color property
Date: Fri, 16 Oct 2015 19:58:55 +0530	[thread overview]
Message-ID: <1445005751-14918-8-git-send-email-shashank.sharma@intel.com> (raw)
In-Reply-To: <1445005751-14918-1-git-send-email-shashank.sharma@intel.com>

Color Manager framework defines a DRM 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 <shashank.sharma@intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi@gmail.com>
---
 include/uapi/drm/drm.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 3dce251..d4de772 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -849,6 +849,16 @@ struct drm_palette {
 	struct drm_r32g32b32 lut[0];
 };
 
+struct drm_ctm {
+	/*
+	 * 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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