mtd: nand: Add driver for Ricoh xD/SmartMedia reader

This adds a driver for Ricoh R5C852 xD card reader.

This reader is a part of larger mulifunction chip
and found at least in R5C832

Driver is complete, but bewere of the fact that some
(probably only type M) xD cards are 'fake' which means that
they have an on board CPU and expose emulated nand command set

These cards don't even store the  oob area on the flash,
but generate it on the fly from something else.

Thus they demand to have proper values written in the oob area,
and therefore only useful with SmartMedia FTL.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7a67218e86fc..6701a00b7a9a 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -102,6 +102,17 @@ config MTD_NAND_OMAP_PREFETCH_DMA
 config MTD_NAND_IDS
         tristate
 
+config MTD_NAND_RICOH
+        tristate "Ricoh xD card reader"
+        default n
+        select MTD_SM_COMMON
+        help
+          Enable support for Ricoh R5C852 xD card reader
+          You also need to enable ether
+          NAND SSFDC (SmartMedia) read only translation layer' or new
+          expermental, readwrite
+          'SmartMedia/xD new translation layer'
+
 config MTD_NAND_AU1550
         tristate "Au1550/1200 NAND support"
         depends on SOC_AU1200 || SOC_AU1550