1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _BCD_H 3*4882a593Smuzhiyun #define _BCD_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/compiler.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define bcd2bin(x) \ 8*4882a593Smuzhiyun (__builtin_constant_p((u8 )(x)) ? \ 9*4882a593Smuzhiyun const_bcd2bin(x) : \ 10*4882a593Smuzhiyun _bcd2bin(x)) 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #define bin2bcd(x) \ 13*4882a593Smuzhiyun (__builtin_constant_p((u8 )(x)) ? \ 14*4882a593Smuzhiyun const_bin2bcd(x) : \ 15*4882a593Smuzhiyun _bin2bcd(x)) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10) 18*4882a593Smuzhiyun #define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun unsigned _bcd2bin(unsigned char val) __attribute_const__; 21*4882a593Smuzhiyun unsigned char _bin2bcd(unsigned val) __attribute_const__; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #endif /* _BCD_H */ 24