#!/vendor/bin/sh
# Copyright (c) 2021 The Linux Foundation. All rights reserved.
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#
#  Changes from Qualcomm Innovation Center are provided under the following license:
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#  Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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#  modification, are permitted (subject to the limitations in the
#  disclaimer below) provided that the following conditions are met:
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#      * Redistributions of source code must retain the above copyright
#        notice, this list of conditions and the following disclaimer.
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#      * 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.
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#      * Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
#        contributors may be used to endorse or promote products derived
#        from this software without specific prior written permission.
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#  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
#  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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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
    cd $tracefs

    # global kprobe events
    echo 'p:usb_gadget/p_config_usb_cfg_link_0 config_usb_cfg_link cfg=+0(+0($arg1)):string func=+0(+0($arg2)):string' >> kprobe_events
    echo 'r:usb_gadget/r_config_usb_cfg_link_0 config_usb_cfg_link ret=$retval:s32' >> kprobe_events
    echo 'p:usb_gadget/p_config_usb_cfg_unlink_0 config_usb_cfg_unlink cfg=+0(+0($arg1)):string func=+0(+0($arg2)):string' >> kprobe_events
    echo 'p:usb_gadget/p_gadget_dev_desc_UDC_store_0 gadget_dev_desc_UDC_store udc=+0($arg2):string' >> kprobe_events
    echo 'r:usb_gadget/r_gadget_dev_desc_UDC_store_0 gadget_dev_desc_UDC_store ret=$retval:s32' >> kprobe_events
    echo 'p:usb_gadget/p_unregister_gadget_item_0 unregister_gadget_item gadget=+0(+0($arg1)):string' >> kprobe_events

    # usb instances
    mkdir instances/usb
    cd instances/usb

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

    # ucsi
    echo 1 > events/ucsi/ucsi_connector_change/enable
    echo 1 > events/ucsi/ucsi_reset_ppm/enable
    echo 1 > events/ucsi/ucsi_run_command/enable

    # USB gadget
    echo 1 > events/gadget/usb_gadget_disconnect/enable
    echo 1 > events/gadget/usb_gadget_connect/enable
    echo 1 > events/gadget/usb_gadget_vbus_draw/enable

    # usb instance kprobe events
    echo 1 > events/usb_gadget/enable

    #DWC3 core runtime
    echo 'name~"a600000.*"' > events/rpm/filter
    echo 1 > events/rpm/rpm_resume/enable
    echo 1 > events/rpm/rpm_suspend/enable
    echo 1 > events/rpm/rpm_return_int/enable

    #xhci
    mkdir $tracefs/instances/usb_xhci
    echo 1 > $tracefs/instances/usb_xhci/events/xhci-hcd/enable

    echo 1 > $tracefs/instances/usb_xhci/tracing_on
    echo 1 > tracing_on
fi