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Based on 3 normalized pattern(s): 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
136 lines
3.0 KiB
C
136 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#include "internals.h"
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static void samsung_nand_decode_id(struct nand_chip *chip)
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{
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struct mtd_info *mtd = nand_to_mtd(chip);
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struct nand_memory_organization *memorg;
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memorg = nanddev_get_memorg(&chip->base);
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/* New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44) */
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if (chip->id.len == 6 && !nand_is_slc(chip) &&
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chip->id.data[5] != 0x00) {
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u8 extid = chip->id.data[3];
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/* Get pagesize */
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memorg->pagesize = 2048 << (extid & 0x03);
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mtd->writesize = memorg->pagesize;
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extid >>= 2;
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/* Get oobsize */
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switch (((extid >> 2) & 0x4) | (extid & 0x3)) {
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case 1:
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memorg->oobsize = 128;
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break;
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case 2:
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memorg->oobsize = 218;
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break;
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case 3:
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memorg->oobsize = 400;
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break;
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case 4:
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memorg->oobsize = 436;
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break;
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case 5:
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memorg->oobsize = 512;
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break;
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case 6:
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memorg->oobsize = 640;
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break;
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default:
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/*
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* We should never reach this case, but if that
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* happens, this probably means Samsung decided to use
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* a different extended ID format, and we should find
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* a way to support it.
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*/
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WARN(1, "Invalid OOB size value");
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break;
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}
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mtd->oobsize = memorg->oobsize;
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/* Get blocksize */
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extid >>= 2;
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memorg->pages_per_eraseblock = (128 * 1024) <<
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(((extid >> 1) & 0x04) |
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(extid & 0x03)) /
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memorg->pagesize;
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mtd->erasesize = (128 * 1024) <<
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(((extid >> 1) & 0x04) | (extid & 0x03));
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/* Extract ECC requirements from 5th id byte*/
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extid = (chip->id.data[4] >> 4) & 0x07;
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if (extid < 5) {
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chip->base.eccreq.step_size = 512;
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chip->base.eccreq.strength = 1 << extid;
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} else {
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chip->base.eccreq.step_size = 1024;
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switch (extid) {
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case 5:
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chip->base.eccreq.strength = 24;
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break;
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case 6:
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chip->base.eccreq.strength = 40;
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break;
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case 7:
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chip->base.eccreq.strength = 60;
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break;
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default:
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WARN(1, "Could not decode ECC info");
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chip->base.eccreq.step_size = 0;
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}
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}
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} else {
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nand_decode_ext_id(chip);
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if (nand_is_slc(chip)) {
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switch (chip->id.data[1]) {
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/* K9F4G08U0D-S[I|C]B0(T00) */
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case 0xDC:
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chip->base.eccreq.step_size = 512;
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chip->base.eccreq.strength = 1;
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break;
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/* K9F1G08U0E 21nm chips do not support subpage write */
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case 0xF1:
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if (chip->id.len > 4 &&
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(chip->id.data[4] & GENMASK(1, 0)) == 0x1)
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chip->options |= NAND_NO_SUBPAGE_WRITE;
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break;
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default:
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break;
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}
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}
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}
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}
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static int samsung_nand_init(struct nand_chip *chip)
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{
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struct mtd_info *mtd = nand_to_mtd(chip);
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if (mtd->writesize > 512)
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chip->options |= NAND_SAMSUNG_LP_OPTIONS;
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if (!nand_is_slc(chip))
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chip->options |= NAND_BBM_LASTPAGE;
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else
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chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE;
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return 0;
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}
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const struct nand_manufacturer_ops samsung_nand_manuf_ops = {
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.detect = samsung_nand_decode_id,
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.init = samsung_nand_init,
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};
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