[MTD] [NAND] Driver for Olympus MAUSB-10 and Fujifilm DPC-R1 card readers

Unlike most stuff on the market the chip inside these two allows raw
flash access and doesn't implement and FTL, leaving that functionality
to the device driver.

Raw flash access in a cheap USB cardreader!  An MTD test device one can
attach to a PC!  What a deal!

The command set of the chip is not documented, so information was
obtained from the existing mass-storage driver
(drivers/usb/storage/alauda.c), its documentation
(http://alauda.sourceforge.net/wikka.php?wakka=BulkCommandReference),
additional reverse engineering and comparison with a vendor driver for a
related chip
(http://www.ratocsystems.com/english/download/driver/linux/sma03u.html).

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 511448ff0ce2..d3ec309f2435 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -280,5 +280,11 @@ config MTD_NAND_PLATFORM
           devices. You will need to provide platform-specific functions
           via platform_data.
 
+config MTD_ALAUDA
+        tristate "MTD driver for Olympus MAUSB-10 and Fijufilm DPC-R1"
+        depends on MTD_NAND && USB
+        help
+          These two (and possibly other) Alauda-based cardreaders for
+          SmartMedia and xD allow raw flash access.
 
 endif # MTD_NAND