LXR linux/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
  18struct 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 */
  31enum jz4780_nemc_bank_type {
  32        JZ4780_NEMC_BANK_SRAM,
  33        JZ4780_NEMC_BANK_NAND,
  34};
  35
  36extern unsigned int jz4780_nemc_num_banks(struct device *dev);
  37
  38extern void jz4780_nemc_set_type(struct device *dev, unsigned int bank,
  39                                 enum jz4780_nemc_bank_type type);
  40extern void jz4780_nemc_assert(struct device *dev, unsigned int bank,
  41                               bool assert);
  42
  43#endif /* __LINUX_JZ4780_NEMC_H__ */
  44