include/usb/lin_gadget_compat.h

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics
   3  * Lukasz Majewski <l.majewski@samsung.com>
   4  *
   5  * This is a Linux kernel compatibility layer for USB Gadget
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #ifndef __LIN_COMPAT_H__
  24 #define __LIN_COMPAT_H__
  25
  26 #include <linux/compat.h>
  27
  28 /* common */
  29 #define spin_lock_init(...)
  30 #define spin_lock(...)
  31 #define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0)
  32 #define spin_unlock(...)
  33 #define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0)
  34 #define disable_irq(...)
  35 #define enable_irq(...)
  36
  37 #define mutex_init(...)
  38 #define mutex_lock(...)
  39 #define mutex_unlock(...)
  40
  41 #define GFP_KERNEL      0
  42
  43 #define IRQ_HANDLED     1
  44
  45 #define ENOTSUPP        524     /* Operation is not supported */
  46
  47 #define BITS_PER_BYTE                           8
  48 #define BITS_TO_LONGS(nr) \
  49         DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
  50 #define DECLARE_BITMAP(name, bits) \
  51         unsigned long name[BITS_TO_LONGS(bits)]
  52
  53 #define small_const_nbits(nbits) \
  54         (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
  55
  56 static inline void bitmap_zero(unsigned long *dst, int nbits)
  57 {
  58         if (small_const_nbits(nbits))
  59                 *dst = 0UL;
  60         else {
  61                 int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
  62                 memset(dst, 0, len);
  63         }
  64 }
  65
  66 #define dma_cache_maint(addr, size, mode) cache_flush()
  67 void cache_flush(void);
  68
  69 #endif /* __LIN_COMPAT_H__ */