Remarkable: support the mainline touchscreen (#10585)

frontend/device/remarkable/device.lua

@@ -143,13 +143,6 @@ function Remarkable:init()
         wacom_protocol = true,
     }
 
-    self.input.open(self.input_wacom) -- Wacom
-    self.input.open(self.input_ts) -- Touchscreen
-    self.input.open(self.input_buttons) -- Buttons
-
-    local scalex = screen_width / self.mt_width
-    local scaley = screen_height / self.mt_height
-
     -- Assume input stuff is saner on mainline kernels...
     -- (c.f., https://github.com/koreader/koreader/issues/10012)
     local is_mainline = false
@@ -164,6 +157,20 @@ function Remarkable:init()
             is_mainline = true
         end
     end
+
+    if is_mainline then
+        self.input_wacom = "/dev/input/by-path/platform-30a20000.i2c-event-mouse"
+        self.input_buttons = "/dev/input/by-path/platform-30370000.snvs:snvs-powerkey-event"
+        self.input_ts = "/dev/input/touchscreen0"
+    end
+
+    self.input.open(self.input_wacom) -- Wacom
+    self.input.open(self.input_ts) -- Touchscreen
+    self.input.open(self.input_buttons) -- Buttons
+
+    local scalex = screen_width / self.mt_width
+    local scaley = screen_height / self.mt_height
+
     if is_mainline then
         -- NOTE: The panel sends *both* ABS_MT_ & ABS_ coordinates, while the pen only sends ABS_ coordinates.
         --       Since we have to apply *different* mangling to each of them,