quirks: Implement qualcomm framebuffer quirks as tasks

modules/module-list.nix

@@ -28,7 +28,7 @@
   ./initrd.nix
   ./mobile-device.nix
   ./nixpkgs.nix
-  ./quirks-qualcomm.nix
+  ./quirks/qualcomm/default.nix
   ./system-target.nix
   ./system-types.nix
 ]

modules/quirks/qualcomm/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./framebuffer.nix
+  ];
+}

modules/quirks/qualcomm/framebuffer.nix

@@ -34,9 +34,7 @@ in
             extraUtils = with pkgs; [
               msm-fb-handle
             ];
-            initFramebuffer = ''
-              msm-fb-handle &
-            '';
+            tasks = [ ./msm-fb-handle-task.rb ];
           };
         })
         (mkIf cfg.msm-fb-refresher.enable {
@@ -44,9 +42,7 @@ in
             extraUtils = with pkgs; [
               msm-fb-refresher
             ];
-            initFramebuffer = ''
-              msm-fb-refresher --loop &
-            '';
+            tasks = [ ./msm-fb-refresher-task.rb ];
           };
         })
       ];

modules/quirks/qualcomm/msm-fb-handle-task.rb

@@ -0,0 +1,11 @@
+class Tasks::MSMFBHandle < SingletonTask
+  def initialize()
+    add_dependency(:SingletonTask, :Graphics)
+  end
+
+  def run()
+    @pid = System.spawn("msm-fb-handle")
+  end
+
+  # FIXME: cleanup when cleanup is implemented
+end

modules/quirks/qualcomm/msm-fb-refresher-task.rb

@@ -0,0 +1,11 @@
+class Tasks::MSMFBRefresher < SingletonTask
+  def initialize()
+    add_dependency(:SingletonTask, :Graphics)
+  end
+
+  def run()
+    @pid = System.spawn("msm-fb-refresher", "--loop")
+  end
+
+  # FIXME: cleanup when cleanup is implemented
+end