[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, 20 insertions, 6 deletions

diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 96cf274ec7cb..343296a710b3 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -16,6 +16,7 @@
 #include <linux/init.h>
 #include <linux/suspend.h>
 #include <linux/platform_device.h>
+#include <linux/sysdev.h>
 
 #include <asm/hardware.h>
 #include <asm/irq.h>
@@ -196,7 +197,6 @@ enum {	SLEEP_SAVE_START = 0,
 
         SLEEP_SAVE_PSTR,
 
-        SLEEP_SAVE_ICMR,
         SLEEP_SAVE_CKEN,
 
         SLEEP_SAVE_MDREFR,
@@ -223,7 +223,6 @@ void pxa27x_cpu_pm_save(unsigned long *sleep_save)
         SAVE(PWER); SAVE(PCFR); SAVE(PRER);
         SAVE(PFER); SAVE(PKWR);
 
-        SAVE(ICMR); ICMR = 0;
         SAVE(CKEN);
         SAVE(PSTR);
 
@@ -256,9 +255,6 @@ void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
 
         RESTORE(CKEN);
 
-        ICLR = 0;
-        ICCR = 1;
-        RESTORE(ICMR);
         RESTORE(PSTR);
 }
 
@@ -409,9 +405,20 @@ static struct platform_device *devices[] __initdata = {
         &pxa27x_device_ssp3,
 };
 
+static struct sys_device pxa27x_sysdev[] = {
+        {
+                .id     = 0,
+                .cls    = &pxa_irq_sysclass,
+        }, {
+                .id     = 1,
+                .cls    = &pxa_irq_sysclass,
+        },
+};
+
 static int __init pxa27x_init(void)
 {
-        int ret = 0;
+        int i, ret = 0;
+
         if (cpu_is_pxa27x()) {
                 clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));
 
@@ -420,8 +427,15 @@ static int __init pxa27x_init(void)
 
                 pxa27x_init_pm();
 
+                for (i = 0; i < ARRAY_SIZE(pxa27x_sysdev); i++) {
+                        ret = sysdev_register(&pxa27x_sysdev[i]);
+                        if (ret)
+                                pr_err("failed to register sysdev[%d]\n", i);
+                }
+
                 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
         }
+
         return ret;
 }