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