1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Bjoern A. Zeeb 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _LINUXKPI_LINUX_BCD_H 31 #define _LINUXKPI_LINUX_BCD_H 32 33 #include <sys/types.h> 34 35 /* 36 * We could use libkern, but we need the argument truncating. 37 * 38 * This leaves us with a duplicate symbol with conflicting types 39 * so we cannot simply re-define as libkern.h gets included in 40 * too many places directly or indirectly. This means for now 41 * drivers will have to be adjusted to call linuxkpi_bcd2bin(). 42 */ 43 static inline uint8_t linuxkpi_bcd2bin(uint8_t x) 44 { 45 46 return (x & 0x0f) + (x >> 4) * 10; 47 } 48 49 #if 0 50 #define bcd2bin(_x) linuxkpi_bcd2bin(_x) 51 #endif 52 53 #endif /* _LINUXKPI_LINUX_BCD_H */ 54