Commit c1298c5c authored Apr 25, 2005 by Aaron J Young Committed by Tony Luck Apr 25, 2005

[IA64-SGI] Altix: enable poweroff



This patch adds the necessary "hook" to allow SGI/SN
machines to perform a system power off upon a 
'init 0', 'halt -p', 'poweroff' or 'shutdown -h'.

The "hook" is to set the pm_power_off callback
to ia64_sn_power_down(). pm_power_off is checked
in machine_power_off()/do_poweroff() and, if set, is executed. 
ia64_sn_power_down() is a function already present (but not 
used currently) in the sn kernel.
ia64_sn_power_down() makes a SAL call to execute the
power off.

Signed-off-by: Aaron J Young <ayoung@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

parent e1e19747

arch/ia64/sn/kernel/setup.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@
		#include <linux/sched.h>
		#include <linux/root_dev.h>
		#include <linux/nodemask.h>
		#include <linux/pm.h>

		#include <asm/io.h>
		#include <asm/sal.h>
		@@ -353,6 +354,14 @@ void __init sn_setup(char **cmdline_p)
		screen_info = sn_screen_info;

		sn_timer_init();

		/*
		* set pm_power_off to a SAL call to allow
		* sn machines to power off. The SAL call can be replaced
		* by an ACPI interface call when ACPI is fully implemented
		* for sn.
		*/
		pm_power_off = ia64_sn_power_down;
		}

		/**