include/linux/platform_data/dma-mmp_tdma.h

   1 /*
   2  *  SRAM Memory Management
   3  *
   4  *  Copyright (c) 2011 Marvell Semiconductors Inc.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License version 2 as
   8  *  published by the Free Software Foundation.
   9  *
  10  */
  11
  12 #ifndef __DMA_MMP_TDMA_H
  13 #define __DMA_MMP_TDMA_H
  14
  15 #include <linux/genalloc.h>
  16
  17 /* ARBITRARY:  SRAM allocations are multiples of this 2^N size */
  18 #define SRAM_GRANULARITY        512
  19
  20 enum sram_type {
  21         MMP_SRAM_UNDEFINED = 0,
  22         MMP_ASRAM,
  23         MMP_ISRAM,
  24 };
  25
  26 struct sram_platdata {
  27         char *pool_name;
  28         int granularity;
  29 };
  30
  31 #ifdef CONFIG_MMP_SRAM
  32 extern struct gen_pool *sram_get_gpool(char *pool_name);
  33 #else
  34 static inline struct gen_pool *sram_get_gpool(char *pool_name)
  35 {
  36         return NULL;
  37 }
  38 #endif
  39
  40 #endif /* __DMA_MMP_TDMA_H */