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mtd: docg3: add OOB layout to mtdinfo

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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 <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Robert Jarzmik 2011-11-19 16:02:49 +01:00 committed by David Woodhouse
parent ae9d4934b2
commit 732b63bd8c
1 changed files with 15 additions and 0 deletions
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15
drivers/mtd/devices/docg3.c
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@ -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;
}
/**