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/*
* Copyright (C) 2017 Free Electrons
* Copyright (C) 2017 NextThing Co
*
* Author: Boris Brezillon <boris.brezillon@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/mtd/rawnand.h>
/*
* Macronix AC series does not support using SET/GET_FEATURES to change
* the timings unlike what is declared in the parameter page. Unflag
* this feature to avoid unnecessary downturns.
*/
static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
{
unsigned int i;
static const char * const broken_get_timings[] = {
"MX30LF1G18AC",
"MX30LF1G28AC",
"MX30LF2G18AC",
"MX30LF2G28AC",
"MX30LF4G18AC",
"MX30LF4G28AC",
"MX60LF8G18AC",
};
if (!chip->parameters.supports_set_get_features)
return;
for (i = 0; i < ARRAY_SIZE(broken_get_timings); i++) {
if (!strcmp(broken_get_timings[i], chip->parameters.model))
break;
}
if (i == ARRAY_SIZE(broken_get_timings))
return;
bitmap_clear(chip->parameters.get_feature_list,
ONFI_FEATURE_ADDR_TIMING_MODE, 1);
bitmap_clear(chip->parameters.set_feature_list,
ONFI_FEATURE_ADDR_TIMING_MODE, 1);
}
static int macronix_nand_init(struct nand_chip *chip)
{
if (nand_is_slc(chip))
chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
macronix_nand_fix_broken_get_timings(chip);
return 0;
}
const struct nand_manufacturer_ops macronix_nand_manuf_ops = {
.init = macronix_nand_init,
};
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