Add egalax utility

src/scripts/python/xutil/egalax.py

@@ -0,0 +1,39 @@
+"""eGalax
+
+This module is responsible for detecting the touchpanel. It would detect the
+touchpannel's drm output and its overal status.
+"""
+
+from pathlib import Path
+
+VENDOR_ID = "0EEF"
+DEVICE_ID = "C000"
+
+def get_egalax_path() -> Path:
+    """Get device path
+    
+    This function will return the path of the HID device related to the pannel.
+    NOTE that it is not the path of the EDID but it can be extracted from it.
+
+    Returns:
+        Path: Path of the eGalax hid device OR None if device is not ceonnected
+    """
+    query = '*' + VENDOR_ID + ':' + DEVICE_ID + '*'
+    devices = list(Path('/sys/devices').rglob(query))
+    if devices:
+        return devices[0]
+    else:
+        return None
+    
+
+def is_egalax_connected() -> bool:
+    """Checks if device is connected
+
+    avaiability of the device is checked by existing a path of the device in the
+    /sys/devices directory.
+
+    Returns:
+        bool: True if device is connected
+    """
+    devpath = get_egalax_path()
+    return bool(devpath)