1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * JZ4780 NAND/external memory controller (NEMC)
4 *
5 * Copyright (c) 2015 Imagination Technologies
6 * Author: Alex Smith <alex@alex-smith.me.uk>
7 */
8
9 #ifndef __LINUX_JZ4780_NEMC_H__
10 #define __LINUX_JZ4780_NEMC_H__
11
12 #include <linux/types.h>
13
14 struct device;
15
16 /*
17 * Number of NEMC banks. Note that there are actually 6, but they are numbered
18 * from 1.
19 */
20 #define JZ4780_NEMC_NUM_BANKS 7
21
22 /**
23 * enum jz4780_nemc_bank_type - device types which can be connected to a bank
24 * @JZ4780_NEMC_BANK_SRAM: SRAM
25 * @JZ4780_NEMC_BANK_NAND: NAND
26 */
27 enum jz4780_nemc_bank_type {
28 JZ4780_NEMC_BANK_SRAM,
29 JZ4780_NEMC_BANK_NAND,
30 };
31
32 extern unsigned int jz4780_nemc_num_banks(struct device *dev);
33
34 extern void jz4780_nemc_set_type(struct device *dev, unsigned int bank,
35 enum jz4780_nemc_bank_type type);
36 extern void jz4780_nemc_assert(struct device *dev, unsigned int bank,
37 bool assert);
38
39 #endif /* __LINUX_JZ4780_NEMC_H__ */
40
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