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