add small program to play with how Linux reacts to hubs with many ports
Change-Id: Ic3d2bec3f55f4d9e13183795c5825723f9427476
diff --git a/ccid/hub_create_gadget.sh b/ccid/hub_create_gadget.sh
new file mode 100755
index 0000000..3689c9f
--- /dev/null
+++ b/ccid/hub_create_gadget.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+GADGET_NAME=osmo-hub
+
+
+
+GADGET_CONFIGFS=/sys/kernel/config/usb_gadget
+
+die() {
+ echo ERROR: $1
+ exit 2
+}
+
+modprobe configfs
+modprobe usb_f_fs
+modprobe dummy_hcd is_high_speed=0 is_super_speed=0
+
+[ -d $GADGET_CONFIGFS ] || die "usb_gadget configfs not mounted"
+
+gadgetdir="$GADGET_CONFIGFS/$GADGET_NAME"
+
+# create gadget
+[ -d $gadgetdir ] || mkdir $gadgetdir || die "Cannot create $gadgetdir. Permission problem?"
+set -e -x
+cd $gadgetdir
+echo 0x2342 > idVendor
+echo 0x4200 > idProduct
+echo 0x09 > bDeviceClass
+echo 1 > bDeviceProtocol
+[ -d strings/0x409 ] || mkdir strings/0x409
+echo 2342 > strings/0x409/serialnumber
+echo "sysmocom GmbH" > strings/0x409/manufacturer
+echo "sysmoHUB" > strings/0x409/product
+
+# create config
+[ -d configs/c.1 ] || mkdir configs/c.1
+[ -d configs/c.1/strings/0x409 ] || mkdir configs/c.1/strings/0x409
+echo "sysmoHUB config" > configs/c.1/strings/0x409/configuration
+
+[ -d functions/ffs.usb0 ] || mkdir functions/ffs.usb0
+[ -e configs/c.1/ffs.usb0 ] || ln -s functions/ffs.usb0 configs/c.1
+
+[ -d /dev/ffs-hub ] || mkdir /dev/ffs-hub
+[ -e /dev/ffs-hub/ep0 ] || mount -t functionfs usb0 /dev/ffs-hub/
+
+# enable device, only works after program has opened EP FDs
+#echo dummy_udc.0 > UDC
+