#!/vendor/bin/sh
# Copyright (c) 2021 The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#     * Neither the name of The Linux Foundation nor the names of its
#       contributors may be used to endorse or promote products derived
#      from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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prop_enabled=`getprop persist.vendor.usb.enable_ftrace 0`

# bail out if its perf config
if [ "$prop_enabled" == "0" -a ! -d /sys/module/msm_rtb ]; then
    return
fi

# Enable various ftrace debugging events for USB
tracefs=/sys/kernel/tracing

if [ -d $tracefs ]; then
    mkdir $tracefs/instances/usb

    # dwc3
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_complete_trb/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_ctrl_req/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_ep_dequeue/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_ep_queue/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_gadget_ep_cmd/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_gadget_ep_disable/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_gadget_ep_enable/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_gadget_giveback/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_prepare_trb/enable
    echo 1 > $tracefs/instances/usb/events/dwc3/dwc3_event/enable

    # ucsi
    echo 1 > $tracefs/instances/usb/events/ucsi/ucsi_connector_change/enable
    echo 1 > $tracefs/instances/usb/events/ucsi/ucsi_reset_ppm/enable
    echo 1 > $tracefs/instances/usb/events/ucsi/ucsi_run_command/enable

    #USB gadget
    echo 1 > $tracefs/instances/usb/events/gadget/usb_gadget_disconnect/enable
    echo 1 > $tracefs/instances/usb/events/gadget/usb_gadget_connect/enable
    echo 1 > $tracefs/instances/usb/events/gadget/usb_gadget_vbus_draw/enable

    #DWC3 core runtime
    echo 'name=="a600000.dwc3"' > $tracefs/instances/usb/events/rpm/filter
    echo 1 > $tracefs/instances/usb/events/rpm/rpm_resume/enable
    echo 1 > $tracefs/instances/usb/events/rpm/rpm_suspend/enable
    echo 1 > $tracefs/instances/usb/events/rpm/rpm_return_int/enable
    echo 1 > $tracefs/instances/usb/tracing_on
fi