ui(raylib): set display power and brightness on init (#35060)

* add set_display_power to hardware.py

* set display power and brightness on app init

system/hardware/base.py

@@ -130,6 +130,10 @@ class HardwareBase(ABC):
   def get_thermal_config(self):
     return ThermalConfig()
 
+  @abstractmethod
+  def set_display_power(self, on: bool):
+    pass
+
   @abstractmethod
   def set_screen_brightness(self, percentage):
     pass

system/hardware/pc/hardware.py

@@ -53,6 +53,9 @@ class Pc(HardwareBase):
   def shutdown(self):
     print("SHUTDOWN!")
 
+  def set_display_power(self, on):
+    pass
+
   def set_screen_brightness(self, percentage):
     pass
 

system/hardware/tici/hardware.py

@@ -341,6 +341,13 @@ class Tici(HardwareBase):
                          exhaust=exhaust,
                          case=case)
 
+  def set_display_power(self, on):
+    try:
+      with open("/sys/class/backlight/panel0-backlight/bl_power", "w") as f:
+        f.write("0" if on else "4")
+    except Exception:
+      pass
+
   def set_screen_brightness(self, percentage):
     try:
       with open("/sys/class/backlight/panel0-backlight/max_brightness") as f:

system/ui/lib/application.py

@@ -5,6 +5,7 @@ import pyray as rl
 from enum import IntEnum
 from openpilot.common.basedir import BASEDIR
 from openpilot.common.swaglog import cloudlog
+from openpilot.system.hardware import HARDWARE
 
 DEFAULT_FPS = 60
 FPS_LOG_INTERVAL = 5  # Seconds between logging FPS drops
@@ -46,6 +47,9 @@ class GuiApplication:
   def init_window(self, title: str, fps: int=DEFAULT_FPS):
     atexit.register(self.close)  # Automatically call close() on exit
 
+    HARDWARE.set_display_power(True)
+    HARDWARE.set_screen_brightness(65)
+
     rl.set_config_flags(rl.ConfigFlags.FLAG_MSAA_4X_HINT | rl.ConfigFlags.FLAG_VSYNC_HINT)
     rl.init_window(self._width, self._height, title)
     rl.set_target_fps(fps)