[PATCH] sh: maple: Add support for VMU devices (v4) [0/3]

[Adrian McMenamin]

This series of patches adds support for the Dreamcast Visual Memory
Unit, reworking the maple bus code to ensure it supports asynchronous
reads and writes. A consequential amendment to the keyboard driver is
also included.

The VMU is a 'smart' flash chip where access is controlled by a
microcontroller so that, for instance, flash erases appear to be
transparent to the end user. The VMU does, however, show typical
flash-type behaviour (eg phased writes) and the MTD layer and the chip
work well together (eg in the way they handle apparent hotplug events
during a block write).

This version tidies up some style issues raised with version 2.

Signed-off-by: Adrian McMenamin <adrian@xxxxxxxxxxxxxxxxx>
---

 drivers/input/keyboard/maple_keyb.c |   40 +-
 drivers/mtd/maps/Kconfig            |   12 +-
 drivers/mtd/maps/Makefile           |    1 +
 drivers/mtd/maps/vmu-flash.c        |  825 +++++++++++++++++++++++++++++++++++
 drivers/sh/maple/maple.c            |  463 ++++++++++----------
 include/linux/maple.h               |   62 ++-
 6 files changed, 1138 insertions(+), 265 deletions(-)

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