[ARM] 3593/1: Add reboot and shutdown handlers for Zaurus handhelds

Patch from Richard Purdie

Add functionality to allow machine specific reboot handlers on ARM.
Add machine specific reboot and poweroff handlers for all PXA Zaurus
models.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 44bcb8097c7a..eb9937f6f5cd 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -20,6 +20,7 @@
 #include <linux/fs.h>
 #include <linux/interrupt.h>
 #include <linux/mmc/host.h>
+#include <linux/pm.h>
 
 #include <asm/setup.h>
 #include <asm/memory.h>
@@ -27,6 +28,7 @@
 #include <asm/hardware.h>
 #include <asm/irq.h>
 #include <asm/io.h>
+#include <asm/system.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -432,8 +434,31 @@ static struct platform_device *devices[] __initdata = {
         &spitzled_device,
 };
 
+static void spitz_poweroff(void)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+        pxa_gpio_mode(SPITZ_GPIO_ON_RESET | GPIO_OUT);
+        GPSR(SPITZ_GPIO_ON_RESET) = GPIO_bit(SPITZ_GPIO_ON_RESET);
+
+        mdelay(1000);
+        arm_machine_restart('h');
+}
+
+static void spitz_restart(char mode)
+{
+        /* Bootloader magic for a reboot */
+        if((MSC0 & 0xffff0000) == 0x7ff00000)
+                MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
+
+        spitz_poweroff();
+}
+
 static void __init common_init(void)
 {
+        pm_power_off = spitz_poweroff;
+        arm_pm_restart = spitz_restart;
+
         PMCR = 0x00;
 
         /* setup sleep mode values */