include/linux/platform_data/mtd-nand-s3c2410.h

   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 */