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  */
31 struct 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 
43 struct 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 */
68 extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand);
69 
70 #endif /*__MTD_NAND_S3C2410_H */
71