[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 d6d72603636..bf6648a8390 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 a042473deed..1d516d317e8 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 44bcb8097c7..eb9937f6f5c 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 76c0e7f0a21..afa223b9e7a 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);