1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2004 Simtec Electronics
4 *	Ben Dooks <ben@simtec.co.uk>
5 *
6 * S3C2410 - NAND device controller platform_device info
7*/
8
9#ifndef __MTD_NAND_S3C2410_H
10#define __MTD_NAND_S3C2410_H
11
12#include <linux/mtd/rawnand.h>
13
14/**
15 * struct s3c2410_nand_set - define a set of one or more nand chips
16 * @flash_bbt: 		Openmoko u-boot can create a Bad Block Table
17 *			Setting this flag will allow the kernel to
18 *			look for it at boot time and also skip the NAND
19 *			scan.
20 * @options:		Default value to set into 'struct nand_chip' options.
21 * @nr_chips:		Number of chips in this set
22 * @nr_partitions:	Number of partitions pointed to by @partitions
23 * @name:		Name of set (optional)
24 * @nr_map:		Map for low-layer logical to physical chip numbers (option)
25 * @partitions:		The mtd partition list
26 *
27 * define a set of one or more nand chips registered with an unique mtd. Also
28 * allows to pass flag to the underlying NAND layer. 'disable_ecc' will trigger
29 * a warning at boot time.
30 */
31struct s3c2410_nand_set {
32	unsigned int		flash_bbt:1;
33
34	unsigned int		options;
35	int			nr_chips;
36	int			nr_partitions;
37	char			*name;
38	int			*nr_map;
39	struct mtd_partition	*partitions;
40	struct device_node	*of_node;
41};
42
43struct s3c2410_platform_nand {
44	/* timing information for controller, all times in nanoseconds */
45
46	int	tacls;	/* time for active CLE/ALE to nWE/nOE */
47	int	twrph0;	/* active time for nWE/nOE */
48	int	twrph1;	/* time for release CLE/ALE from nWE/nOE inactive */
49
50	unsigned int	ignore_unset_ecc:1;
51
52	enum nand_ecc_engine_type engine_type;
53
54	int			nr_sets;
55	struct s3c2410_nand_set *sets;
56
57	void			(*select_chip)(struct s3c2410_nand_set *,
58					       int chip);
59};
60
61/**
62 * s3c_nand_set_platdata() - register NAND platform data.
63 * @nand: The NAND platform data to register with s3c_device_nand.
64 *
65 * This function copies the given NAND platform data, @nand and registers
66 * it with the s3c_device_nand. This allows @nand to be __initdata.
67*/
68extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand);
69
70#endif /*__MTD_NAND_S3C2410_H */
71