arch/arm/mach-at91/include/mach/system_rev.h

   1 /*
   2  * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   3  *
   4  * Under GPLv2 only
   5  */
   6
   7 #ifndef __ARCH_SYSTEM_REV_H__
   8 #define __ARCH_SYSTEM_REV_H__
   9
  10 #include <asm/system_info.h>
  11
  12 /*
  13  * board revision encoding
  14  * mach specific
  15  * the 16-31 bit are reserved for at91 generic information
  16  *
  17  * bit 31:
  18  *      0 => nand 8 bit
  19  *      1 => nand 16 bit
  20  */
  21 #define BOARD_HAVE_NAND_16BIT   (1 << 31)
  22 static inline int board_have_nand_16bit(void)
  23 {
  24         return (system_rev & BOARD_HAVE_NAND_16BIT) ? 1 : 0;
  25 }
  26
  27 #endif /* __ARCH_SYSTEM_REV_H__ */