[PATCH] spi: mtd dataflash driver

This is a conversion of the AT91rm9200 DataFlash MTD driver to use the
lightweight SPI framework, and no longer be AT91-specific.  It compiles
down to less than 3KBytes on ARM.

The driver allows board-specific init code to provide platform_data with
the relevant MTD partitioning information, and hotplugs.

This version has been lightly tested.  Its parent at91_dataflash driver has
been pretty well banged on, although kernel.org JFFS2 dataflash support was
acting broken the last time I tried it.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 9a2aa4033c6a..84f2eb1fae02 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -47,6 +47,14 @@ config MTD_MS02NV
           accelerator.  Say Y here if you have a DECstation 5000/2x0 or a
           DECsystem 5900 equipped with such a module.
 
+config MTD_DATAFLASH
+        tristate "Support for AT45xxx DataFlash"
+        depends on MTD && SPI_MASTER && EXPERIMENTAL
+        help
+          This enables access to AT45xxx DataFlash chips, using SPI.
+          Sometimes DataFlash chips are packaged inside MMC-format
+          cards; at this writing, the MMC stack won't handle those.
+
 config MTD_SLRAM
         tristate "Uncached system RAM"
         depends on MTD