x86/platform: Add Eurobraille/Iris power off support

The Iris machines from Eurobraille do not have APM or ACPI support
to shut themselves down properly.  A special I/O sequence is
needed to do so.  This modle runs this I/O sequence at
kernel shutdown when its force parameter is set to 1.

Signed-off-by: Shérab <Sebastien.Hinderer@ens-lyon.org>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
[ did minor coding style edits ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 655fcf5ac690..6ab63107eeaf 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -482,6 +482,19 @@ config X86_ES7000
           Support for Unisys ES7000 systems.  Say 'Y' here if this kernel is
           supposed to run on an IA32-based Unisys ES7000 system.
 
+config X86_32_IRIS
+        tristate "Eurobraille/Iris poweroff module"
+        depends on X86_32
+        ---help---
+          The Iris machines from EuroBraille do not have APM or ACPI support
+          to shut themselves down properly.  A special I/O sequence is
+          needed to do so, which is what this module does at
+          kernel shutdown.
+
+          This is only for Iris machines from EuroBraille.
+
+          If unused, say N.
+
 config SCHED_OMIT_FRAME_POINTER
         def_bool y
         prompt "Single-depth WCHAN output"