From 68e63df442a414f851a639f630b80ad00d65db69 Mon Sep 17 00:00:00 2001
From: Frans de Jonge <fransdejonge@gmail.com>
Date: Fri, 2 Mar 2018 23:03:00 +0100
Subject: [PATCH] [feat] Add H2O2 natural light (#3709)

See https://www.mobileread.com/forums/showpost.php?p=3664352&postcount=66
---
 frontend/device/kobo/device.lua      | 6 ++++++
 frontend/device/kobo/powerd.lua      | 2 +-
 frontend/device/kobo/sysfs_light.lua | 8 ++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/frontend/device/kobo/device.lua b/frontend/device/kobo/device.lua
index 9c9406416..ead7e3a38 100644
--- a/frontend/device/kobo/device.lua
+++ b/frontend/device/kobo/device.lua
@@ -109,6 +109,12 @@ local KoboSnow = Kobo:new{
     display_dpi = 265,
     -- the bezel covers the top 11 pixels:
     viewport = Geom:new{x=0, y=11, w=1080, h=1429},
+    hasNaturalLight = yes,
+    frontlight_settings = {
+        frontlight_white = "/sys/class/backlight/lm3630a_ledb",
+        frontlight_red = "/sys/class/backlight/lm3630a_led",
+        frontlight_green = "/sys/class/backlight/lm3630a_leda",
+    },
 }
 
 -- Kobo Aura second edition:
diff --git a/frontend/device/kobo/powerd.lua b/frontend/device/kobo/powerd.lua
index 9984927d1..c449ca6eb 100644
--- a/frontend/device/kobo/powerd.lua
+++ b/frontend/device/kobo/powerd.lua
@@ -97,7 +97,7 @@ function KoboPowerD:init()
         -- If this device has natural light (currently only KA1)
         -- use the SysFS interface, and ioctl otherwise.
         if self.device.hasNaturalLight() then
-            self.fl = SysfsLight
+            self.fl = SysfsLight:new(self.device.frontlight_settings)
             self.fl_warmth = 0
             self:_syncKoboLightOnStart()
         else
diff --git a/frontend/device/kobo/sysfs_light.lua b/frontend/device/kobo/sysfs_light.lua
index 5559d2ee2..d524daa24 100644
--- a/frontend/device/kobo/sysfs_light.lua
+++ b/frontend/device/kobo/sysfs_light.lua
@@ -19,6 +19,14 @@ local KoboSysfsLight = {
     green_offset = -65,
 }
 
+function KoboSysfsLight:new(o)
+    o = o or {}
+    setmetatable(o, self)
+    self.__index = self
+    if o.init then o:init() end
+    return o
+end
+
 function KoboSysfsLight:setBrightness(brightness)
     self:setNaturalBrightness(brightness, self.current_warmth)
 end