[MTD] [MAPS] Blackfin Async Flash Maps

Handle the case where flash memory and ethernet mac/phy are mapped onto
the same async bank

[try #4]
 - drop superfluous casts
 - drop SSYNC() when reading from the flash and rewrite
   bfin_copy_from() to be like bfin_copy_to() so that
   we dont have to handle all the aligned/unaligned cases

[try #3] rename bf5xx-flash to bfin-async-flash
 - move all kconfig board settings into board resources
 - fixup casting style according to lkml feedback
 - rewrite driver so that it can handle arbitrary of
   instances according to the declared platform resources

[try #2]
Remove useless SSYNC() as Will said

[try #1]
The BF533-STAMP does this for example.
All board-specific configuration goes in your board resources file.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Acked-By: Jörn Engel <joern@logfs.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index b2c180245618..02c45e1e24ee 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -523,6 +523,17 @@ config MTD_PCMCIA_ANONYMOUS
 
           If unsure, say N.
 
+config MTD_BFIN_ASYNC
+        tristate "Blackfin BF533-STAMP Flash Chip Support"
+        depends on BFIN533_STAMP && MTD_CFI
+        select MTD_PARTITIONS
+        default y
+        help
+          Map driver which allows for simultaneous utilization of
+          ethernet and CFI parallel flash.
+
+          If compiled as a module, it will be called bfin-async-flash.
+
 config MTD_UCLINUX
         tristate "Generic uClinux RAM/ROM filesystem support"
         depends on MTD_PARTITIONS && !MMU