otg: init_delay

kvmd/apps/__init__.py

@@ -193,6 +193,7 @@ def _get_config_scheme() -> Dict:
                     "force_users": Option([], type=valid_users_list),
                     # Dynamic content
                 },
+
                 "external": {
                     "type": Option(""),
                 },
@@ -249,7 +250,11 @@ def _get_config_scheme() -> Dict:
             "product":       Option("Composite KVM Device"),
             "serial_number": Option("CAFEBABE"),
             "udc":           Option(""),
-            "acm":           Option(True, type=valid_bool),
+            "init_delay":    Option(3.0, type=valid_float_f01),
+
+            "acm": {
+                "enabled": Option(True, type=valid_bool),
+            },
         },
 
         "ipmi": {

kvmd/apps/otg/__init__.py

@@ -20,16 +20,16 @@
 # ========================================================================== #
 
 
+import time
+import argparse
+
 from os import listdir
 from os import mkdir
-from os import makedirs
 from os import symlink
 from os import rmdir
 from os import unlink
 from os.path import join
 
-import argparse
-
 from typing import List
 from typing import Optional
 
@@ -59,7 +59,7 @@ def _find_udc(udc: str) -> str:
 
 def _check_config(config: Section) -> None:
     if (
-        not config.otg.acm
+        not config.otg.acm.enabled
         and config.kvmd.hid.type != "otg"
         and config.kvmd.msd.type != "otg"
     ):
@@ -89,11 +89,12 @@ def _cmd_start(config: Section) -> None:
     _write(join(lang_path, "serialnumber"), config.otg.serial_number)
 
     config_path = join(gadget_path, "configs/c.1")
-    makedirs(join(config_path, "strings/0x409"))
-    _write(join(gadget_path, "configs/c.1/strings/0x409/configuration"), "Config 1: ECM network")
-    _write(join(gadget_path, "configs/c.1/MaxPower"), "250")
+    mkdir(config_path)
+    mkdir(join(config_path, "strings/0x409"))
+    _write(join(config_path, "strings/0x409/configuration"), "Config 1: ECM network")
+    _write(join(config_path, "MaxPower"), "250")
 
-    if config.otg.acm:
+    if config.otg.acm.enabled:
         func_path = join(gadget_path, "functions/acm.usb0")
         mkdir(func_path)
         symlink(func_path, join(config_path, "acm.usb0"))
@@ -126,6 +127,8 @@ def _cmd_start(config: Section) -> None:
 
     _write(join(gadget_path, "UDC"), udc)
 
+    time.sleep(config.otg.init_delay)
+
 
 def _cmd_stop(config: Section) -> None:
     # https://www.kernel.org/doc/Documentation/usb/gadget_configfs.txt