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

   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 */
  31struct 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
  43struct 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*/
  68extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand);
  69
  70#endif /*__MTD_NAND_S3C2410_H */
  71