Crc7 is used to compute mmc spi command packet checksum.
Copy from linux-2.6 lib/crc7.c include/linux/crc7.h commit ad241528c4919505afccb022acbab3eeb0db4d80
Signed-off-by: Thomas Chou
#ifndef _LINUX_CRC7_H #define _LINUX_CRC7_H #include <linux/types.h> extern const u8 crc7_syndrome_table[256]; static inline u8 crc7_byte(u8 crc, u8 data) { return crc7_syndrome_table[(crc << 1) ^ data]; } extern u8 crc7(u8 crc, const u8 *buffer, size_t len); #endif