[ARM] 4903/1: [AT91] SAM9/CAP9 system shutdown
Enable system shutdown/power-off on AT91SAM9 and AT91CAP9 based boards.
This does not require power-management to be enabled, and the
pm_power_off method can be overridden in board-specific files if
necessary.
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index a53ba0f..052074a 100644
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -11,12 +11,14 @@
*/
#include <linux/module.h>
+#include <linux/pm.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/arch/at91sam9263.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
+#include <asm/arch/at91_shdwc.h>
#include "generic.h"
#include "clock.h"
@@ -271,6 +273,11 @@
at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
}
+static void at91sam9263_poweroff(void)
+{
+ at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
+}
+
/* --------------------------------------------------------------------
* AT91SAM9263 processor initialization
@@ -282,6 +289,7 @@
iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
at91_arch_reset = at91sam9263_reset;
+ pm_power_off = at91sam9263_poweroff;
at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
/* Init clock subsystem */