include/linux/jz4780-nemc.h

   1 /*
   2  * JZ4780 NAND/external memory controller (NEMC)
   3  *
   4  * Copyright (c) 2015 Imagination Technologies
   5  * Author: Alex Smith <alex@alex-smith.me.uk>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  */
  12
  13 #ifndef __LINUX_JZ4780_NEMC_H__
  14 #define __LINUX_JZ4780_NEMC_H__
  15
  16 #include <linux/types.h>
  17
  18 struct device;
  19
  20 /*
  21  * Number of NEMC banks. Note that there are actually 6, but they are numbered
  22  * from 1.
  23  */
  24 #define JZ4780_NEMC_NUM_BANKS   7
  25
  26 /**
  27  * enum jz4780_nemc_bank_type - device types which can be connected to a bank
  28  * @JZ4780_NEMC_BANK_SRAM: SRAM
  29  * @JZ4780_NEMC_BANK_NAND: NAND
  30  */
  31 enum jz4780_nemc_bank_type {
  32         JZ4780_NEMC_BANK_SRAM,
  33         JZ4780_NEMC_BANK_NAND,
  34 };
  35
  36 extern unsigned int jz4780_nemc_num_banks(struct device *dev);
  37
  38 extern void jz4780_nemc_set_type(struct device *dev, unsigned int bank,
  39                                  enum jz4780_nemc_bank_type type);
  40 extern void jz4780_nemc_assert(struct device *dev, unsigned int bank,
  41                                bool assert);
  42
  43 #endif /* __LINUX_JZ4780_NEMC_H__ */