mtd: docg3: add multiple floor support
Add support for multiple floors, ie. cascaded docg3
chips. There might be 4 docg3 chips cascaded, sharing the
same address space, and providing up to 4 times the storage
capacity of a unique chip.
Each floor will be seen as an independant mtd device.
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/docg3.h b/drivers/mtd/devices/docg3.h
index 62af5aa..75df3a1 100644
--- a/drivers/mtd/devices/docg3.h
+++ b/drivers/mtd/devices/docg3.h
@@ -80,6 +80,7 @@
#define DOC_CHIPID_G3 0x200
#define DOC_ERASE_MARK 0xaa
+#define DOC_MAX_NBFLOORS 4
/*
* Flash registers
*/