#!/bin/bash

# SPDX-FileCopyrightText: Copyright (c) 2016-2020 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. 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.
#
# 3. Neither the name of the copyright holder 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 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 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# description: "NVIDIA bluetooth/wifi init script"

# This is also triggered from rfkill 0/1 state change.
# For non-BRCM modules, no arguments are passed so just check
# if arguments are valid or not for those modules
if [ $# -eq 0 ]; then
    exit 0
fi

SUBTASK=$1

# pci subsystem for 4356 broadcom wifi/bt chip sends 0x43ec
# as device id instead of 0x4356, this if else makes it to
# follow the naming convention of the .hcd file

if [ "$2" = "0x43ec" ]; then
	BCMCHIP="0x4356"
else
	BCMCHIP=$2
fi

RET=1

if [ "$SUBTASK" = "register" ]; then
	if [ "x$BCMCHIP" != "x" ]; then
		if [ ! -f /var/run/nvbcm ]; then
			# record the type of chip
			echo "BCMCHIP=${BCMCHIP}" > /var/run/nvbcm
		fi
		RET=0
	fi
	exit $RET
fi

if [ -x /usr/sbin/brcm_patchram_plus -a -r /var/run/nvbcm -a -w /proc/bluetooth/sleep/lpm ]; then
	. /var/run/nvbcm
	for chip in 4329 4330 4324 4354 4356; do
		if [ "x0x$chip" = "x$BCMCHIP" -a -f "/lib/firmware/bcm$chip.hcd" ]; then
			RET=0
			break
		fi
	done
fi

if [ "$RET" != "0" ]; then
	stop
fi

exit $RET