1/*
2 * Copyright (c) 2004 Simtec Electronics
3 *	Ben Dooks <ben@simtec.co.uk>
4 *
5 * S3C2410 - NAND device controller platform_device info
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10*/
11
12#ifndef __MTD_NAND_S3C2410_H
13#define __MTD_NAND_S3C2410_H
14
15/**
16 * struct s3c2410_nand_set - define a set of one or more nand chips
17 * @disable_ecc:	Entirely disable ECC - Dangerous
18 * @flash_bbt: 		Openmoko u-boot can create a Bad Block Table
19 *			Setting this flag will allow the kernel to
20 *			look for it at boot time and also skip the NAND
21 *			scan.
22 * @options:		Default value to set into 'struct nand_chip' options.
23 * @nr_chips:		Number of chips in this set
24 * @nr_partitions:	Number of partitions pointed to by @partitions
25 * @name:		Name of set (optional)
26 * @nr_map:		Map for low-layer logical to physical chip numbers (option)
27 * @partitions:		The mtd partition list
28 *
29 * define a set of one or more nand chips registered with an unique mtd. Also
30 * allows to pass flag to the underlying NAND layer. 'disable_ecc' will trigger
31 * a warning at boot time.
32 */
33struct s3c2410_nand_set {
34	unsigned int		disable_ecc:1;
35	unsigned int		flash_bbt:1;
36
37	unsigned int		options;
38	int			nr_chips;
39	int			nr_partitions;
40	char			*name;
41	int			*nr_map;
42	struct mtd_partition	*partitions;
43	struct nand_ecclayout	*ecc_layout;
44};
45
46struct s3c2410_platform_nand {
47	/* timing information for controller, all times in nanoseconds */
48
49	int	tacls;	/* time for active CLE/ALE to nWE/nOE */
50	int	twrph0;	/* active time for nWE/nOE */
51	int	twrph1;	/* time for release CLE/ALE from nWE/nOE inactive */
52
53	unsigned int	ignore_unset_ecc:1;
54
55	int			nr_sets;
56	struct s3c2410_nand_set *sets;
57
58	void			(*select_chip)(struct s3c2410_nand_set *,
59					       int chip);
60};
61
62/**
63 * s3c_nand_set_platdata() - register NAND platform data.
64 * @nand: The NAND platform data to register with s3c_device_nand.
65 *
66 * This function copies the given NAND platform data, @nand and registers
67 * it with the s3c_device_nand. This allows @nand to be __initdata.
68*/
69extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand);
70
71#endif /*__MTD_NAND_S3C2410_H */
72