Commit c1298c5c authored by Aaron J Young's avatar Aaron J Young Committed by Tony Luck

[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: default avatarAaron J Young <ayoung@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent e1e19747
...@@ -29,6 +29,7 @@ ...@@ -29,6 +29,7 @@
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/root_dev.h> #include <linux/root_dev.h>
#include <linux/nodemask.h> #include <linux/nodemask.h>
#include <linux/pm.h>
#include <asm/io.h> #include <asm/io.h>
#include <asm/sal.h> #include <asm/sal.h>
...@@ -353,6 +354,14 @@ void __init sn_setup(char **cmdline_p) ...@@ -353,6 +354,14 @@ void __init sn_setup(char **cmdline_p)
screen_info = sn_screen_info; screen_info = sn_screen_info;
sn_timer_init(); 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;
} }
/** /**
......
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