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