1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * JZ4780 NAND/external memory controller (NEM 2 * JZ4780 NAND/external memory controller (NEMC)
4 * 3 *
5 * Copyright (c) 2015 Imagination Technologies 4 * Copyright (c) 2015 Imagination Technologies
6 * Author: Alex Smith <alex@alex-smith.me.uk> 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.
7 */ 11 */
8 12
9 #ifndef __LINUX_JZ4780_NEMC_H__ 13 #ifndef __LINUX_JZ4780_NEMC_H__
10 #define __LINUX_JZ4780_NEMC_H__ 14 #define __LINUX_JZ4780_NEMC_H__
11 15
12 #include <linux/types.h> 16 #include <linux/types.h>
13 17
14 struct device; 18 struct device;
15 19
16 /* 20 /*
17 * Number of NEMC banks. Note that there are a 21 * Number of NEMC banks. Note that there are actually 6, but they are numbered
18 * from 1. 22 * from 1.
19 */ 23 */
20 #define JZ4780_NEMC_NUM_BANKS 7 24 #define JZ4780_NEMC_NUM_BANKS 7
21 25
22 /** 26 /**
23 * enum jz4780_nemc_bank_type - device types w 27 * enum jz4780_nemc_bank_type - device types which can be connected to a bank
24 * @JZ4780_NEMC_BANK_SRAM: SRAM 28 * @JZ4780_NEMC_BANK_SRAM: SRAM
25 * @JZ4780_NEMC_BANK_NAND: NAND 29 * @JZ4780_NEMC_BANK_NAND: NAND
26 */ 30 */
27 enum jz4780_nemc_bank_type { 31 enum jz4780_nemc_bank_type {
28 JZ4780_NEMC_BANK_SRAM, 32 JZ4780_NEMC_BANK_SRAM,
29 JZ4780_NEMC_BANK_NAND, 33 JZ4780_NEMC_BANK_NAND,
30 }; 34 };
31 35
32 extern unsigned int jz4780_nemc_num_banks(stru 36 extern unsigned int jz4780_nemc_num_banks(struct device *dev);
33 37
34 extern void jz4780_nemc_set_type(struct device 38 extern void jz4780_nemc_set_type(struct device *dev, unsigned int bank,
35 enum jz4780_n 39 enum jz4780_nemc_bank_type type);
36 extern void jz4780_nemc_assert(struct device * 40 extern void jz4780_nemc_assert(struct device *dev, unsigned int bank,
37 bool assert); 41 bool assert);
38 42
39 #endif /* __LINUX_JZ4780_NEMC_H__ */ 43 #endif /* __LINUX_JZ4780_NEMC_H__ */
40 44
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