From 1d0b95b0834087ba3653f69c24483d63a26d51a7 Mon Sep 17 00:00:00 2001 From: Mike Dunn Date: Sun, 11 Mar 2012 14:21:10 -0700 Subject: mtd: add ecc_strength fields to mtd structs This adds 'ecc_strength' to struct mtd_info. This stores the maximum number of bit errors that can be corrected in one writesize region. For consistency with the nand code, 'strength' is similiarly added to struct nand_ecc_ctrl. This stores the maximum number of bit errors that can be corrected in one ecc step. Signed-off-by: Mike Dunn Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/mtd.h | 3 +++ include/linux/mtd/nand.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include/linux/mtd') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 726c2d1b2589..cf5ea8cdcf8e 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -164,6 +164,9 @@ struct mtd_info { /* ECC layout structure pointer - read only! */ struct nand_ecclayout *ecclayout; + /* max number of correctible bit errors per writesize */ + unsigned int ecc_strength; + /* Data for variable erase regions. If numeraseregions is zero, * it means that the whole device has erasesize as given above. */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 609868f3db42..1482340d3d9f 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -324,6 +324,7 @@ struct nand_hw_control { * @steps: number of ECC steps per page * @size: data bytes per ECC step * @bytes: ECC bytes per step + * @strength: max number of correctible bits per ECC step * @total: total number of ECC bytes per page * @prepad: padding information for syndrome based ECC generators * @postpad: padding information for syndrome based ECC generators @@ -351,6 +352,7 @@ struct nand_ecc_ctrl { int size; int bytes; int total; + int strength; int prepad; int postpad; struct nand_ecclayout *layout; -- cgit v1.2.3-59-g8ed1b