mtd: docg3: add ECC correction code
Credit for discovering the BCH algorith parameters, and bit
reversing algorithm is to be give to Mike Dunn and Ivan
Djelic.
The BCH correction code relied upon the BCH library, where
all data and ECC is bit-reversed. The BCH library works
correctly when each input byte is bit-reversed, and
accordingly ECC output is also bit-reversed.
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>
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 283d887..952e956 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -251,6 +251,8 @@
config MTD_DOCG3
tristate "M-Systems Disk-On-Chip G3"
+ select BCH
+ select BCH_CONST_PARAMS
---help---
This provides an MTD device driver for the M-Systems DiskOnChip
G3 devices.
@@ -259,6 +261,13 @@
M-Systems and now Sandisk. The support is very experimental,
and doesn't give access to any write operations.
+if MTD_DOCG3
+config BCH_CONST_M
+ default 14
+config BCH_CONST_T
+ default 4
+endif
+
config MTD_DOCPROBE
tristate
select MTD_DOCECC