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 nand_ecc_modes_t ecc_mode;
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 */