PRSTUX: interact with USB charger

frontend/device/sony-prstux/device.lua

@@ -1,6 +1,7 @@
 local Generic = require("device/generic/device") -- <= look at this file!
 local logger = require("logger")
 local TimeVal = require("ui/timeval")
+local PluginShare = require("pluginshare")
 local ffi = require("ffi")
 
 local function yes() return true end
@@ -14,6 +15,7 @@ local SonyPRSTUX = Generic:new{
     hasWifiManager = yes,
     canReboot = yes,
     canPowerOff = yes,
+    usbPluggedIn = false,
 }
 
 
@@ -64,6 +66,7 @@ function SonyPRSTUX:init()
     self.input.open("/dev/input/event0") -- Keys
     self.input.open("/dev/input/event1") -- touchscreen
     self.input.open("/dev/input/event2") -- power button
+    self.input.open("fake_events") -- usb plug-in/out and charging/not-charging
     self.input:registerEventAdjustHook(adjustTouchEvt)
 
     local rotation_mode = self.screen.ORIENTATION_LANDSCAPE_ROTATED
@@ -127,6 +130,20 @@ function SonyPRSTUX:reboot()
     os.execute("reboot")
 end
 
+function SonyPRSTUX:usbPlugIn()
+    self.usb_plugged_in = true
+    PluginShare.pause_auto_suspend = true
+end
+
+function SonyPRSTUX:usbPlugOut()
+    self.usb_plugged_in = false
+    PluginShare.pause_auto_suspend = false
+end
+
+function SonyPRSTUX:usbPluggedIn()
+    return self.usb_plugged_in
+end
+
 function SonyPRSTUX:initNetworkManager(NetworkMgr)
     function NetworkMgr:turnOffWifi(complete_callback)
        self:releaseIP()

frontend/ui/uimanager.lua

@@ -248,6 +248,23 @@ function UIManager:init()
             Device:outofScreenSaver()
             self:_afterResume()
         end
+        self.event_handlers["Charging"] = function()
+            self:_beforeCharging()
+        end
+        self.event_handlers["NotCharging"] = function()
+            self:_afterNotCharging()
+        end
+        self.event_handlers["UsbPlugIn"] = function()
+            if Device.screen_saver_mode then
+                Device:resume()
+                Device:outofScreenSaver()
+                self:_afterResume()
+            end
+            Device:usbPlugIn()
+        end
+        self.event_handlers["UsbPlugOut"] = function()
+            Device:usbPlugOut()
+        end
         self.event_handlers["__default__"] = function(input_event)
             -- Same as in Kobo: we want to ignore keys during suspension
             if not Device.screen_saver_mode then