sh: support for platforms without PIO.
This extends some of the existing special casing for HAS_IOPORT
platforms and gets it to the point where platforms can begin to
conditionally select it.
The major changes here are that the PIO routines themselves go away
completely, including all of the machvec port mapping wrappers. With this
in place it's possible for any non-machvec abusing platform to disable
PIO completely. At present this is left as an opt-in until the abusers
are the odd ones out instead of the majority.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 0e318c9..1eef24d 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -9,7 +9,7 @@
def_bool y
select EMBEDDED
select HAVE_CLK
- select HAVE_IDE
+ select HAVE_IDE if HAS_IOPORT
select HAVE_LMB
select HAVE_OPROFILE
select HAVE_GENERIC_DMA_COHERENT
@@ -174,6 +174,9 @@
config ARCH_HAS_CPU_IDLE_WAIT
def_bool y
+config NO_IOPORT
+ bool
+
config IO_TRAPPED
bool