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