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authorMike Dunn <mikedunn@newsguy.com>2012-03-11 14:21:10 -0700
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 00:56:36 +0100
commit1d0b95b0834087ba3653f69c24483d63a26d51a7 (patch)
tree3f32fbe2f4aa28c5cec4be31e40e9db4138e8ce8
parentd107bc34f4953852834f086968fc7963125d6943 (diff)
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 <mikedunn@newsguy.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--include/linux/mtd/mtd.h3
-rw-r--r--include/linux/mtd/nand.h2
2 files changed, 5 insertions, 0 deletions
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;