include/linux/rar_register.h

   1 /*
   2  * Copyright (C) 2010 Intel Corporation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 2 of the GNU General
   6  * Public License as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be
   9  * useful, but WITHOUT ANY WARRANTY; without even the implied
  10  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  11  * PURPOSE.  See the GNU General Public License for more details.
  12  * You should have received a copy of the GNU General Public
  13  * License along with this program; if not, write to the Free
  14  * Software Foundation, Inc., 59 Temple Place - Suite 330,
  15  * Boston, MA  02111-1307, USA.
  16  * The full GNU General Public License is included in this
  17  * distribution in the file called COPYING.
  18  */
  19
  20
  21 #ifndef _RAR_REGISTER_H
  22 #define _RAR_REGISTER_H
  23
  24 #include <linux/types.h>
  25
  26 /* following are used both in drivers as well as user space apps */
  27
  28 #define RAR_TYPE_VIDEO  0
  29 #define RAR_TYPE_AUDIO  1
  30 #define RAR_TYPE_IMAGE  2
  31 #define RAR_TYPE_DATA   3
  32
  33 #ifdef __KERNEL__
  34
  35 struct rar_device;
  36
  37 #if defined(CONFIG_RAR_REGISTER)
  38 int register_rar(int num,
  39                 int (*callback)(unsigned long data), unsigned long data);
  40 void unregister_rar(int num);
  41 int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end);
  42 int rar_lock(int rar_index);
  43 #else
  44 extern void unregister_rar(int num)  { }
  45 extern int rar_lock(int rar_index) { return -EIO; }
  46
  47 extern inline int register_rar(int num,
  48                 int (*callback)(unsigned long data), unsigned long data)
  49 {
  50         return -ENODEV;
  51 }
  52
  53 extern int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end)
  54 {
  55         return -ENODEV;
  56 }
  57 #endif  /* RAR_REGISTER */
  58
  59 #endif  /* __KERNEL__ */
  60 #endif  /* _RAR_REGISTER_H */