1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * © Copyright 2016 ATMEL 4 * © Copyright 2016 Free Electrons 5 * 6 * Author: Boris Brezillon <boris.brezillon@free-electrons.com> 7 * 8 * Derived from the atmel_nand.c driver which contained the following 9 * copyrights: 10 * 11 * Copyright © 2003 Rick Bronson 12 * 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 / AT91SAM9263 21 * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright © 2007 22 * 23 * Derived from Das U-Boot source code 24 * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) 25 * © Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas 26 * 27 * Add Programmable Multibit ECC support for various AT91 SoC 28 * © Copyright 2012 ATMEL, Hong Xu 29 * 30 * Add Nand Flash Controller support for SAMA5 SoC 31 * © Copyright 2013 ATMEL, Josh Wu (josh.wu@atmel.com) 32 */ 33 34 #ifndef ATMEL_PMECC_H 35 #define ATMEL_PMECC_H 36 37 #define ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH 0 38 #define ATMEL_PMECC_SECTOR_SIZE_AUTO 0 39 #define ATMEL_PMECC_OOBOFFSET_AUTO -1 40 41 struct 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 53 struct atmel_pmecc *devm_atmel_pmecc_get(struct device *dev); 54 55 struct atmel_pmecc_user * 56 atmel_pmecc_create_user(struct atmel_pmecc *pmecc, 57 struct atmel_pmecc_user_req *req); 58 void atmel_pmecc_destroy_user(struct atmel_pmecc_user *user); 59 60 void atmel_pmecc_reset(struct atmel_pmecc *pmecc); 61 int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op); 62 void atmel_pmecc_disable(struct atmel_pmecc_user *user); 63 int atmel_pmecc_wait_rdy(struct atmel_pmecc_user *user); 64 int atmel_pmecc_correct_sector(struct atmel_pmecc_user *user, int sector, 65 void *data, void *ecc); 66 bool atmel_pmecc_correct_erased_chunks(struct atmel_pmecc_user *user); 67 void atmel_pmecc_get_generated_eccbytes(struct atmel_pmecc_user *user, 68 int sector, void *ecc); 69 70 #endif /* ATMEL_PMECC_H */ 71