include/linux/platform_data/imx-iram.h

   1 /*
   2  * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19 #include <linux/errno.h>
  20
  21 #ifdef CONFIG_IRAM_ALLOC
  22
  23 int __init iram_init(unsigned long base, unsigned long size);
  24 void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr);
  25 void iram_free(unsigned long dma_addr, unsigned int size);
  26
  27 #else
  28
  29 static inline int __init iram_init(unsigned long base, unsigned long size)
  30 {
  31         return -ENOMEM;
  32 }
  33
  34 static inline void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr)
  35 {
  36         return NULL;
  37 }
  38
  39 static inline void iram_free(unsigned long base, unsigned long size) {}
  40
  41 #endif