Kobo Frontlight Tweaks

Now the frontlight remains unchanged from Nickel to koreader and vice
versa.
Also ffi/kobolight.lua has been changed to allow for usage of the toggle
button in the filemanager.

frontend/ui/device/basepowerd.lua

@@ -20,6 +20,7 @@ end
 function BasePowerD:init() end
 function BasePowerD:toggleFrontlight() end
 function BasePowerD:setIntensityHW() end
+function BasePowerD:setIntensitySW() end
 function BasePowerD:getCapacityHW() end
 function BasePowerD:isChargingHW() end
 function BasePowerD:suspendHW() end
@@ -39,6 +40,14 @@ function BasePowerD:setIntensity(intensity)
     self:setIntensityHW()
 end
 
+function BasePowerD:setIntensityWithoutHW(intensity)
+    intensity = intensity < self.fl_min and self.fl_min or intensity
+    intensity = intensity > self.fl_max and self.fl_max or intensity
+    self.flIntensity = intensity
+    self:setIntensitySW()
+end
+
+
 function BasePowerD:getCapacity()
     if capacity_pulled_count == capacity_cached_count then
         capacity_pulled_count = 0

frontend/ui/device/kobopowerd.lua

@@ -28,6 +28,13 @@ function KoboPowerD:setIntensityHW()
     end
 end
 
+function KoboPowerD:setIntensitySW()
+    if self.fl ~= nil then
+        self.fl:restoreBrightness(self.flIntensity)
+    end
+end
+
+
 function KoboPowerD:getCapacityHW()
     self.battCapacity = self:read_int_file(self.batt_capacity_file)
     return self.battCapacity

reader.lua

@@ -1,8 +1,8 @@
 #!./koreader-base
 
 require "defaults"
-package.path = "./frontend/?.lua;./?.lua"
-package.cpath = "?.so;/usr/lib/lua/?.so"
+package.path = "?.lua;common/?.lua;frontend/?.lua"
+package.cpath = "?.so;common/?.so;/usr/lib/lua/?.so"
 
 local DocSettings = require("docsettings")
 local _ = require("gettext")
@@ -184,7 +184,8 @@ do
     if powerd and powerd.restore_settings then
         local intensity = G_reader_settings:readSetting("frontlight_intensity")
         intensity = intensity or powerd.flIntensity
-        powerd:setIntensity(intensity)
+        powerd:setIntensityWithoutHW(intensity)
+        -- powerd:setIntensity(intensity)
     end
 end