1 files changed, 71 insertions, 0 deletions
diff --git a/msm8909/sdm/libs/utils/utils.cpp b/msm8909/sdm/libs/utils/utils.cpp
new file mode 100644
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+++ b/msm8909/sdm/libs/utils/utils.cpp
@@ -0,0 +1,71 @@
+/*
+* Copyright (c) 2016 - 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.
+*/
+
+#include <unistd.h>
+#include <math.h>
+#include <utils/sys.h>
+#include <utils/utils.h>
+
+#include <algorithm>
+
+#define __CLASS__ "Utils"
+
+namespace sdm {
+
+float gcd(float a, float b) {
+  if (a < b) {
+    std::swap(a, b);
+  }
+
+  while (b != 0) {
+    float tmp = b;
+    b = fmodf(a, b);
+    a = tmp;
+  }
+
+  return a;
+}
+
+float lcm(float a, float b) {
+  return (a * b) / gcd(a, b);
+}
+
+void CloseFd(int *fd) {
+  if (*fd >= 0) {
+    Sys::close_(*fd);
+    *fd = -1;
+  }
+}
+
+DriverType GetDriverType() {
+    const char *fb_caps = "/sys/devices/virtual/graphics/fb0/mdp/caps";
+    // 0 - File exists
+    return Sys::access_(fb_caps, F_OK) ? DriverType::DRM : DriverType::FB;
+}
+}  // namespace sdm