1 /* 2 * © Copyright 2016 ATMEL 3 * © Copyright 2016 Free Electrons 4 * 5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com> 6 * 7 * Derived from the atmel_nand.c driver which contained the following 8 * copyrights: 9 * 10 * Copyright © 2003 Rick Bronson 11 * 12 * Derived from drivers/mtd/nand/autcpu12.c (removed in v3.8) 13 * Copyright © 2001 Thomas Gleixner (gleixner@autronix.de) 14 * 15 * Derived from drivers/mtd/spia.c (removed in v3.8) 16 * Copyright © 2000 Steven J. Hill (sjhill@cotw.com) 17 * 18 * 19 * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263 20 * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright © 2007 21 * 22 * Derived from Das U-Boot source code 23 * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) 24 * © Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas 25 * 26 * Add Programmable Multibit ECC support for various AT91 SoC 27 * © Copyright 2012 ATMEL, Hong Xu 28 * 29 * Add Nand Flash Controller support for SAMA5 SoC 30 * © Copyright 2013 ATMEL, Josh Wu (josh.wu@atmel.com) 31 * 32 * This program is free software; you can redistribute it and/or modify 33 * it under the terms of the GNU General Public License version 2 as 34 * published by the Free Software Foundation. 35 * 36 */ 37 38 #ifndef ATMEL_PMECC_H 39 #define ATMEL_PMECC_H 40 41 #define ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH 0 42 #define ATMEL_PMECC_SECTOR_SIZE_AUTO 0 43 #define ATMEL_PMECC_OOBOFFSET_AUTO -1 44 45 struct atmel_pmecc_user_req { 46 int pagesize; 47 int oobsize; 48 struct { 49 int strength; 50 int bytes; 51 int sectorsize; 52 int nsectors; 53 int ooboffset; 54 } ecc; 55 }; 56 57 struct atmel_pmecc *devm_atmel_pmecc_get(struct device *dev); 58 59 struct atmel_pmecc_user * 60 atmel_pmecc_create_user(struct atmel_pmecc *pmecc, 61 struct atmel_pmecc_user_req *req); 62 void atmel_pmecc_destroy_user(struct atmel_pmecc_user *user); 63 64 void atmel_pmecc_reset(struct atmel_pmecc *pmecc); 65 int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op); 66 void atmel_pmecc_disable(struct atmel_pmecc_user *user); 67 int atmel_pmecc_wait_rdy(struct atmel_pmecc_user *user); 68 int atmel_pmecc_correct_sector(struct atmel_pmecc_user *user, int sector, 69 void *data, void *ecc); 70 bool atmel_pmecc_correct_erased_chunks(struct atmel_pmecc_user *user); 71 void atmel_pmecc_get_generated_eccbytes(struct atmel_pmecc_user *user, 72 int sector, void *ecc); 73 74 #endif /* ATMEL_PMECC_H */ 75