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diff --git a/msm8909/sdm/include/utils/constants.h b/msm8909/sdm/include/utils/constants.h
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+/*
+* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without modification, are permitted
+* provided that the following conditions are met:
+*    * Redistributions of source code must retain the above copyright notice, this list of
+*      conditions and the following disclaimer.
+*    * Redistributions in binary form must reproduce the above copyright notice, this list of
+*      conditions and the following disclaimer in the documentation and/or other materials provided
+*      with the distribution.
+*    * Neither the name of The Linux Foundation nor the names of its contributors may be used to
+*      endorse or promote products derived from this software without specific prior written
+*      permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __CONSTANTS_H__
+#define __CONSTANTS_H__
+
+#include <stdlib.h>
+#include <inttypes.h>
+
+#ifndef PRIu64
+#define PRIu64 "llu"
+#endif
+
+#define INT(exp) static_cast<int>(exp)
+#define FLOAT(exp) static_cast<float>(exp)
+#define UINT8(exp) static_cast<uint8_t>(exp)
+#define UINT16(exp) static_cast<uint16_t>(exp)
+#define UINT32(exp) static_cast<uint32_t>(exp)
+#define INT32(exp) static_cast<int32_t>(exp)
+#define UINT64(exp) static_cast<uint64_t>(exp)
+
+#define ROUND_UP(number, step) ((((number) + ((step) - 1)) / (step)) * (step))
+
+#define BITMAP(bit) (1 << (bit))
+
+#define ROUND_UP_ALIGN_DOWN(value, a) FLOAT(FloorToMultipleOf(UINT32(value + 0.5f), UINT32(a)))
+#define ROUND_UP_ALIGN_UP(value, a) FLOAT(CeilToMultipleOf(UINT32(value + 0.5f), UINT32(a)))
+
+#define IDLE_TIMEOUT_DEFAULT_MS 70
+#define IDLE_TIMEOUT_ACTIVE_MS IDLE_TIMEOUT_DEFAULT_MS
+#define IDLE_TIMEOUT_INACTIVE_MS 520
+
+#define IS_RGB_FORMAT(format) (((format) < kFormatYCbCr420Planar) ? true: false)
+
+#define BITS_PER_BYTE 8
+#define BITS_TO_BYTES(x) (((x) + (BITS_PER_BYTE - 1)) / (BITS_PER_BYTE))
+
+// factor value should be in powers of 2(eg: 1, 2, 4, 8)
+template <class T1, class T2>
+inline T1 FloorToMultipleOf(const T1 &value, const T2 &factor) {
+  return (T1)(value & (~(factor - 1)));
+}
+
+template <class T1, class T2>
+inline T1 CeilToMultipleOf(const T1 &value, const T2 &factor) {
+  return (T1)((value + (factor - 1)) & (~(factor - 1)));
+}
+
+namespace sdm {
+
+  const int kThreadPriorityUrgent = -9;
+  const int kMaxRotatePerLayer = 2;
+  const uint32_t kMaxBlitTargetLayers = 2;
+  const int kPageSize = 4096;
+  const uint32_t kGridSize = 129;  // size used for non-linear transformation before Tone-mapping
+  const uint32_t kLutDim = 17;  // Dim of the 3d LUT for tone-mapping.
+
+  typedef void * Handle;
+
+}  // namespace sdm
+
+#endif  // __CONSTANTS_H__
+