Recognize RAM payload USB devices on Linux

src/orchard_cli/apple/linux_usb.py

@@ -3,7 +3,7 @@
 import re
 import uuid
 
-MODES = {0x1227: 'dfu', 0x4141: 'pongo', 0x4142: 'linux'}
+MODES = {0x1227: 'dfu', 0x4141: 'pongo', 0x4142: 'linux', 0x4144: 'ram'}
 
 
 def devices(root=Path('/sys/bus/usb/devices')):

tests/test_device_state.py

@@ -142,6 +142,20 @@ def test_linux_usb_descriptor_identifies_device_and_boot_without_serial_commands
         self.assertEqual(len(rows),1)
         self.assertEqual((rows[0]['ecid'],rows[0]['boot_id']),(2,BOOT_B))
 
+    def test_linux_ram_payload_is_available_to_ram_session_tools(self):
+        node = self.root/'1-2'
+        node.mkdir()
+        for name,value in {'idVendor':'05ac','idProduct':'4144','product':'Orchard charger-test',
+                           'serial':f'BOOT:{BOOT_B}'}.items():
+            (node/name).write_text(value)
+        (node/'iface/tty/ttyACM0').mkdir(parents=True)
+        rows = linux_usb.devices(self.root)
+        self.assertEqual(len(rows),1)
+        self.assertEqual(rows[0]['mode'],'ram')
+        self.assertEqual(rows[0]['boot_id'],BOOT_B)
+        self.assertEqual(rows[0]['serial_port'],'/dev/ttyACM0')
+        self.assertIsNone(rows[0]['ecid'])
+
 
 if __name__ == '__main__':
     unittest.main()