#!/bin/sh

ath10kcal_die() {
	echo "ath10cal: " "$*"
	exit 1
}

ath10kcal_from_file() {
	local source=$1
	local offset=$2
	local count=$3

	dd if=$source of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
		ath10kcal_die "failed to extract calibration data from $source"
}

ath10kcal_extract() {
	local part=$1
	local offset=$2
	local count=$3
	local mtd

	mtd=$(find_mtd_chardev $part)
	[ -n "$mtd" ] || \
		ath10kcal_die "no mtd device found for partition $part"

	dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
		ath10kcal_die "failed to extract calibration data from $mtd"
}

ath10kcal_patch_mac() {
	local mac=$1

	[ -z "$mac" ] && return

	macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=6 count=6
}

[ -e /lib/firmware/$FIRMWARE ] && exit 0

. /lib/ar71xx.sh
. /lib/functions.sh
. /lib/functions/system.sh

board=$(ar71xx_board_name)

case "$FIRMWARE" in
"ath10k/cal-pci-0000:00:00.0.bin")
	case $board in
	dlan-pro-1200-ac)
		ath10kcal_extract "art" 20480 2116
		;;
	mc-mac1200r)
		ath10kcal_extract "art" 20480 2116
		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -1)
		;;
	r6100)
		ath10kcal_extract "caldata" 20480 2116
		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) +2)
		;;
	qihoo-c301)
		ath10kcal_extract "radiocfg" 20480 2116
		ath10kcal_patch_mac $(mtd_get_mac_ascii devdata wlan5mac)
		;;
	esr1750 | \
	epg5000)
		ath10kcal_extract "caldata" 20480 2116
		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) +1)
		;;
	esac
	;;
"ath10k/cal-pci-0000:01:00.0.bin")
	case $board in
	archer-c5 | \
	archer-c7)
		ath10kcal_extract "art" 20480 2116
		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -2)
		;;
	nbg6716)
		ath10kcal_extract "RFdata" 20480 2116
		;;
	rb-911g-5hpacd)
		ath10kcal_from_file "/sys/firmware/routerboot/ext_wlan_data" 20480 2116
		;;
	esac
	;;
*)
	exit 1
	;;
esac