#!/bin/sh

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

. /lib/functions/caldata.sh

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

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

	offset=$(($offset / 2))
	count=$(($count / 2))

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

case "$FIRMWARE" in
	"ath9k-eeprom-pci-0000:00:01.0.bin")
		case "$(board_name)" in
			huawei,hg556a-b)
				caldata_extract_swap "cal_data" 0x1e000 0xeb8
				;;
			*)
				caldata_die "board $board is not supported yet"
				;;
		esac
		;;
esac