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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * © Copyright 2016 ATMEL4 * © Copyright 2016 Free Electrons5 *6 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>7 *8 * Derived from the atmel_nand.c driver which contained the following9 * copyrights:10 *11 * Copyright © 2003 Rick Bronson12 *13 * Derived from drivers/mtd/nand/autcpu12.c (removed in v3.8)14 * Copyright © 2001 Thomas Gleixner (gleixner@autronix.de)15 *16 * Derived from drivers/mtd/spia.c (removed in v3.8)17 * Copyright © 2000 Steven J. Hill (sjhill@cotw.com)18 *19 *20 * Add Hardware ECC support for AT91SAM9260 / AT91SAM926321 * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright © 200722 *23 * Derived from Das U-Boot source code24 * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c)25 * © Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas26 *27 * Add Programmable Multibit ECC support for various AT91 SoC28 * © Copyright 2012 ATMEL, Hong Xu29 *30 * Add Nand Flash Controller support for SAMA5 SoC31 * © Copyright 2013 ATMEL, Josh Wu (josh.wu@atmel.com)32 */33 34#ifndef ATMEL_PMECC_H35#define ATMEL_PMECC_H36 37#define ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH 038#define ATMEL_PMECC_SECTOR_SIZE_AUTO 039#define ATMEL_PMECC_OOBOFFSET_AUTO -140 41struct atmel_pmecc_user_req {42 int pagesize;43 int oobsize;44 struct {45 int strength;46 int bytes;47 int sectorsize;48 int nsectors;49 int ooboffset;50 } ecc;51};52 53struct atmel_pmecc *devm_atmel_pmecc_get(struct device *dev);54 55struct atmel_pmecc_user *56atmel_pmecc_create_user(struct atmel_pmecc *pmecc,57 struct atmel_pmecc_user_req *req);58void atmel_pmecc_destroy_user(struct atmel_pmecc_user *user);59 60void atmel_pmecc_reset(struct atmel_pmecc *pmecc);61int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op);62void atmel_pmecc_disable(struct atmel_pmecc_user *user);63int atmel_pmecc_wait_rdy(struct atmel_pmecc_user *user);64int atmel_pmecc_correct_sector(struct atmel_pmecc_user *user, int sector,65 void *data, void *ecc);66bool atmel_pmecc_correct_erased_chunks(struct atmel_pmecc_user *user);67void atmel_pmecc_get_generated_eccbytes(struct atmel_pmecc_user *user,68 int sector, void *ecc);69 70#endif /* ATMEL_PMECC_H */71