Commit 47a72688 authored by Adrian McMenamin's avatar Adrian McMenamin Committed by Paul Mundt

mtd: flash mapping support for Dreamcast VMU.

This patch adds support for the Sega Dreamcast visual memory unit as a
flash mapping. It requires changes in the maple bus driver (posted
separately) to support block reads and writes.

The VMU is a 'smart' flash device, with a built-in 8-bit controller -
for instance there is an erase before a write but it is hidden from the
user. But the device's overall behaviour means it works well with the
mtd layer and it is appropriate to add it as an mtd mapping.
Signed-off-by: default avatarAdrian McMenamin <adrian@mcmen.demon.co.uk>
Acked-By: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 71b973a4
...@@ -551,5 +551,15 @@ config MTD_PLATRAM ...@@ -551,5 +551,15 @@ config MTD_PLATRAM
This selection automatically selects the map_ram driver. This selection automatically selects the map_ram driver.
endmenu config MTD_VMU
tristate "Map driver for Dreamcast VMU"
depends on MAPLE
help
This driver enables access to the Dreamcast Visual Memory Unit (VMU).
Most Dreamcast users will want to say Y here.
To build this as a module select M here, the module will be called
vmu-flash.
endmenu
...@@ -61,3 +61,4 @@ obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o ...@@ -61,3 +61,4 @@ obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o
obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o
obj-$(CONFIG_MTD_VMU) += vmu-flash.o
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