[ARM] pxa: introduce sysdev for IRQ register saving/restoring

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 21 insertions, 3 deletions

diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 5cbf057a1b32..3a7e8ccd70bd 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -20,6 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/irq.h>
 #include <linux/io.h>
+#include <linux/sysdev.h>
 
 #include <asm/hardware.h>
 #include <asm/arch/pxa3xx-regs.h>
@@ -452,9 +453,19 @@ static struct platform_device *devices[] __initdata = {
         &pxa3xx_device_ssp4,
 };
 
+static struct sys_device pxa3xx_sysdev[] = {
+        {
+                .id     = 0,
+                .cls    = &pxa_irq_sysclass,
+        }, {
+                .id     = 1,
+                .cls    = &pxa_irq_sysclass,
+        },
+};
+
 static int __init pxa3xx_init(void)
 {
-        int ret = 0;
+        int i, ret = 0;
 
         if (cpu_is_pxa3xx()) {
                 clks_register(pxa3xx_clks, ARRAY_SIZE(pxa3xx_clks));
@@ -464,9 +475,16 @@ static int __init pxa3xx_init(void)
 
                 pxa3xx_init_pm();
 
-                return platform_add_devices(devices, ARRAY_SIZE(devices));
+                for (i = 0; i < ARRAY_SIZE(pxa3xx_sysdev); i++) {
+                        ret = sysdev_register(&pxa3xx_sysdev[i]);
+                        if (ret)
+                                pr_err("failed to register sysdev[%d]\n", i);
+                }
+
+                ret = platform_add_devices(devices, ARRAY_SIZE(devices));
         }
-        return 0;
+
+        return ret;
 }
 
 subsys_initcall(pxa3xx_init);