From 59ee5fa037d7c6b3e2ce655527763522b5a2e3e5 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sat, 19 Nov 2011 16:02:49 +0100 Subject: [PATCH] mtd/docg3: add OOB layout to mtdinfo Add OOB layout description for docg3, so that userspace can use this information to setup the data for write_oob(). Signed-off-by: Robert Jarzmik Reviewed-by: Ivan Djelic Reviewed-by: Mike Dunn --- drivers/mtd/devices/docg3.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 6eca7f6c072c..27c4feae132f 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -63,6 +63,20 @@ * */ +/** + * struct docg3_oobinfo - DiskOnChip G3 OOB layout + * @eccbytes: 8 bytes are used (1 for Hamming ECC, 7 for BCH ECC) + * @eccpos: ecc positions (byte 7 is Hamming ECC, byte 8-14 are BCH ECC) + * @oobfree: free pageinfo bytes (byte 0 until byte 6, byte 15 + * @oobavail: 8 available bytes remaining after ECC toll + */ +static struct nand_ecclayout docg3_oobinfo = { + .eccbytes = 8, + .eccpos = {7, 8, 9, 10, 11, 12, 13, 14}, + .oobfree = {{0, 7}, {15, 1} }, + .oobavail = 8, +}; + static inline u8 doc_readb(struct docg3 *docg3, u16 reg) { u8 val = readb(docg3->base + reg); @@ -973,6 +987,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd) mtd->write_oob = NULL; mtd->sync = NULL; mtd->block_isbad = doc_block_isbad; + mtd->ecclayout = &docg3_oobinfo; } /** -- 2.39.5