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 */ 33 struct 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 46 struct 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 */ 69 extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand); 70 71 #endif /*__MTD_NAND_S3C2410_H */ 72