[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>

4 files changed, 92 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index d6d726036361..bf6648a83901 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -19,6 +19,7 @@
 #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>
@@ -26,6 +27,7 @@
 #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>
@@ -310,8 +312,31 @@ static struct platform_device *devices[] __initdata = {
         &corgiled_device,
 };
 
+static void corgi_poweroff(void)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+        if (!machine_is_corgi())
+                /* Green LED off tells the bootloader to halt */
+                reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
+        arm_machine_restart('h');
+}
+
+static void corgi_restart(char mode)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+        if (!machine_is_corgi())
+                /* Green LED on tells the bootloader to reboot */
+                set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
+        arm_machine_restart('h');
+}
+
 static void __init corgi_init(void)
 {
+        pm_power_off = corgi_poweroff;
+        arm_pm_restart = corgi_restart;
+
         /* setup sleep mode values */
         PWER  = 0x00000002;
         PFER  = 0x00000000;
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index a042473deedd..1d516d317e89 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -18,11 +18,13 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/fb.h>
+#include <linux/pm.h>
 
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/irq.h>
 #include <asm/setup.h>
+#include <asm/system.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -247,10 +249,25 @@ static struct platform_device *devices[] __initdata = {
         &poodle_scoop_device,
 };
 
+static void poodle_poweroff(void)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+        arm_machine_restart('h');
+}
+
+static void poodle_restart(char mode)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+        arm_machine_restart('h');
+}
+
 static void __init poodle_init(void)
 {
         int ret = 0;
 
+        pm_power_off = poodle_poweroff;
+        arm_pm_restart = poodle_restart;
+
         /* setup sleep mode values */
         PWER  = 0x00000002;
         PFER  = 0x00000000;
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 */
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 76c0e7f0a219..afa223b9e7a2 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -19,12 +19,14 @@
 #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>
 #include <asm/mach-types.h>
 #include <asm/hardware.h>
 #include <asm/irq.h>
+#include <asm/system.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/udc.h>
@@ -266,8 +268,31 @@ static struct platform_device *devices[] __initdata = {
         &tosaled_device,
 };
 
+static void tosa_poweroff(void)
+{
+        RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+
+        pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_OUT);
+        GPSR(TOSA_GPIO_ON_RESET) = GPIO_bit(TOSA_GPIO_ON_RESET);
+
+        mdelay(1000);
+        arm_machine_restart('h');
+}
+
+static void tosa_restart(char mode)
+{
+        /* Bootloader magic for a reboot */
+        if((MSC0 & 0xffff0000) == 0x7ff00000)
+                MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
+
+        tosa_poweroff();
+}
+
 static void __init tosa_init(void)
 {
+        pm_power_off = tosa_poweroff;
+        arm_pm_restart = tosa_restart;
+
         pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_IN);
         pxa_gpio_mode(TOSA_GPIO_TC6393_INT | GPIO_IN);
         pxa_gpio_mode(TOSA_GPIO_USB_IN | GPIO_IN);