LXR linux/drivers/mtd/nand/raw/nand

   1/*
   2 * Copyright (C) 2017 Free Electrons
   3 * Copyright (C) 2017 NextThing Co
   4 *
   5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
   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 as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 */
  17
  18#include <linux/mtd/rawnand.h>
  19
  20static int macronix_nand_init(struct nand_chip *chip)
  21{
  22        if (nand_is_slc(chip))
  23                chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
  24
  25        /*
  26         * MX30LF2G18AC chip does not support using SET/GET_FEATURES to change
  27         * the timings unlike what is declared in the parameter page. Unflag
  28         * this feature to avoid unnecessary downturns.
  29         */
  30        if (chip->parameters.supports_set_get_features &&
  31            !strcmp("MX30LF2G18AC", chip->parameters.model)) {
  32                bitmap_clear(chip->parameters.get_feature_list,
  33                             ONFI_FEATURE_ADDR_TIMING_MODE, 1);
  34                bitmap_clear(chip->parameters.set_feature_list,
  35                             ONFI_FEATURE_ADDR_TIMING_MODE, 1);
  36        }
  37
  38        return 0;
  39}
  40
  41const struct nand_manufacturer_ops macronix_nand_manuf_ops = {
  42        .init = macronix_nand_init,
  43};
  44