meta/meta-mediatek-mt2731/recipes-devtools/android-tools/android-tools-conf/android-gadget-setup

#!/bin/busybox sh

if [ "$1" == "pre" ]; then
    echo "=== Initial: USB Configuration Start ===" > /dev/kmsg

    if [ -e "/dev/usb-ffs" ] ; then
        echo "=== Bypass Pre Configuration ===" > /dev/kmsg
    else # first boot
        mkdir -p /dev/usb-ffs
        mkdir -p /dev/usb-ffs/adb
        mount none /sys/kernel/config -t configfs
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/rndis.gs4
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/ncm.f0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/ecm.f0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/eem.f0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/acm.gs0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/acm.gs1
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/acm.gs2
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/acm.gs3
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/via_modem.gs0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/via_ets.gs0
        mkdir -p /sys/kernel/config/usb_gadget/g1/functions/via_atc.gs0
        mount adb /dev/usb-ffs/adb -t functionfs -o uid=2000,gid=2000
    fi

elif [ "$1" == "post" ];then

    echo 0x0e8d > /sys/kernel/config/usb_gadget/g1/idVendor
    echo 0x0223 > /sys/kernel/config/usb_gadget/g1/bcdDevice
    echo 0x0200 > /sys/kernel/config/usb_gadget/g1/bcdUSB
    mkdir -p /sys/kernel/config/usb_gadget/g1/strings/0x409

    if [ "$(cat /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber)" == "" ]; then
        if [[ "$(cat /etc/hostname)" == "auto2731evb-ivt-vp1" || "$(cat /etc/hostname)" == "auto2731evb-ivt-vp2" ]]; then
            echo "MT-96533493F01B518C" > /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
        else
            echo 0123456789ABCDEF > /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
        fi
    else
        echo "=== usb serial number exist, keep it ===" > /dev/kmsg
    fi

    echo MediaTek > /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
    echo auto2731-ivt > /sys/kernel/config/usb_gadget/g1/strings/0x409/product

    mkdir -p /sys/kernel/config/usb_gadget/g1/configs/b.1
    mkdir -p /sys/kernel/config/usb_gadget/g1/configs/b.1/strings/0x409
    echo 500 > /sys/kernel/config/usb_gadget/g1/configs/b.1/MaxPower

    if [ -n "$(cat /proc/boot_mode | grep META)" ] ; then # META mode: META_BOOT_SKIP_PRELOADER

        # ADB + CDC-ACM*2 (META mode)
        #setprop sys.usb.config adb,meta,elt
        #################### START ####################
        sleep 1
        echo meta_elt_adb > /sys/kernel/config/usb_gadget/g1/configs/b.1/strings/0x409/configuration
        echo 0x2040 > /sys/kernel/config/usb_gadget/g1/idProduct
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0 /sys/kernel/config/usb_gadget/g1/configs/b.1/f1
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/ffs.adb /sys/kernel/config/usb_gadget/g1/configs/b.1/f2
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/acm.gs0 /sys/kernel/config/usb_gadget/g1/configs/b.1/f3
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/acm.gs3 /sys/kernel/config/usb_gadget/g1/configs/b.1/f4
        echo musb-hdrc > /sys/kernel/config/usb_gadget/g1/UDC
        #################### END ####################
        sleep 1
        echo musb-hdrc > /sys/kernel/config/usb_gadget/g1/UDC

    else # Normal mode

        # ADB + CDC-ACM*3 (normal mode)
        #setprop sys.usb.config adb,acm
        #################### START ####################
        sleep 1
        echo gs1gs3_dual_acm > /sys/kernel/config/usb_gadget/g1/configs/b.1/strings/0x409/configuration
        echo 0x202f > /sys/kernel/config/usb_gadget/g1/idProduct
        echo 1 > /sys/devices/platform/soc/mt_usb/saving
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/ffs.adb /sys/kernel/config/usb_gadget/g1/configs/b.1/f1
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/acm.gs0 /sys/kernel/config/usb_gadget/g1/configs/b.1/f2
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/acm.gs1 /sys/kernel/config/usb_gadget/g1/configs/b.1/f3
        ln -sf /sys/kernel/config/usb_gadget/g1/functions/acm.gs3 /sys/kernel/config/usb_gadget/g1/configs/b.1/f4
        #################### END ####################
        sleep 1
        echo musb-hdrc > /sys/kernel/config/usb_gadget/g1/UDC
    fi

    if [ -e "/proc/bootprof" ] ; then
        echo usb_active > /proc/bootprof
    fi

    echo "=== Initial: USB Configuration End ===" > /dev/kmsg
fi