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// SPDX-License-Identifier: GPL-2.0#include <linux/bcd.h>#include <linux/export.h> unsigned _bcd2bin(unsigned char val){	return (val & 0x0f) + (val >> 4) * 10;}EXPORT_SYMBOL(_bcd2bin); unsigned char _bin2bcd(unsigned val){	return ((val / 10) << 4) + val % 10;}EXPORT_SYMBOL(_bin2bcd);