From 3ef2fb426775fc2ae19b70c318dbdf4a0aeeced7 Mon Sep 17 00:00:00 2001
From: Andrew Victor <linux@maxim.org.za>
Date: Wed, 2 Apr 2008 21:36:06 +0100
Subject: [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>
---
 arch/arm/mach-at91/at91sam9261.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'arch/arm/mach-at91/at91sam9261.c')

diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index 90b87e1..35bf6fd 100644
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.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/at91sam9261.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"
@@ -245,6 +247,11 @@ static void at91sam9261_reset(void)
 	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 }
 
+static void at91sam9261_poweroff(void)
+{
+	at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
+}
+
 
 /* --------------------------------------------------------------------
  *  AT91SAM9261 processor initialization
@@ -256,6 +263,7 @@ void __init at91sam9261_initialize(unsigned long main_clock)
 	iotable_init(at91sam9261_io_desc, ARRAY_SIZE(at91sam9261_io_desc));
 
 	at91_arch_reset = at91sam9261_reset;
+	pm_power_off = at91sam9261_poweroff;
 	at91_extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1)
 			| (1 << AT91SAM9261_ID_IRQ2);
 
-- 
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