From 52c34ee61a1c292f1226cc61a10dd90e611e6d63 Mon Sep 17 00:00:00 2001
From: Raptor Engineering Development Team <support@raptorengineering.com>
Date: Mon, 15 Jan 2018 19:21:39 -0600
Subject: Enable raw PWM control mode for systems without known fan types

---
 fan_speed.cpp | 33 +++++++++++++++++++++++++++++++--
 hwmon.hpp     |  2 ++
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/fan_speed.cpp b/fan_speed.cpp
index 65e5655..c6a9162 100644
--- a/fan_speed.cpp
+++ b/fan_speed.cpp
@@ -16,15 +16,44 @@ namespace hwmon
 
 uint64_t FanSpeed::target(uint64_t value)
 {
+    auto directPWM = false;
     auto curValue = FanSpeedObject::target();
+    auto enable = env::getEnv("ENABLE", _type, _id);
+    if (!enable.empty())
+    {
+        auto val = std::stoul(enable);
+        if (val == 1)
+        {
+            directPWM = true;
+        }
+    }
 
     if (curValue != value)
     {
         // Write target out to sysfs
         try
         {
-            _ioAccess->write(value, _type, _id, entry::target, hwmonio::retries,
-                             hwmonio::delay);
+            if (directPWM)
+            {
+                _ioAccess->write(
+                        (value * 255) / 100,
+                        type::pwm,
+                        _id,
+                        entry::rawpwm,
+                        hwmonio::retries,
+                        hwmonio::delay);
+            }
+            else
+            {
+                _ioAccess->write(
+                        value,
+                        _type,
+                        _id,
+                        entry::target,
+                        hwmonio::retries,
+                        hwmonio::delay);
+            }
+
         }
         catch (const std::system_error& e)
         {
diff --git a/hwmon.hpp b/hwmon.hpp
index 4f4545c..6f85f5c 100644
--- a/hwmon.hpp
+++ b/hwmon.hpp
@@ -14,12 +14,14 @@ static constexpr auto clabel = "label";
 static constexpr auto ctarget = "target";
 static constexpr auto cenable = "enable";
 static constexpr auto cfault = "fault";
+static constexpr auto crawpwm = "";
 
 static const std::string input = cinput;
 static const std::string label = clabel;
 static const std::string target = ctarget;
 static const std::string enable = cenable;
 static const std::string fault = cfault;
+static const std::string rawpwm = crawpwm;
 } // namespace entry
 
 namespace type
-- 
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