rm rk2818_gpio_suspend/rk2818_gpio_resume, use sysdev

arch/arm/mach-rk2818/gpio.c

@@ -22,6 +22,7 @@
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/sysdev.h>
 
 #include <mach/hardware.h>
 #include <mach/gpio.h>
@@ -631,7 +632,8 @@ static int gpio_irq_set_wake(unsigned irq, unsigned state)
 	return 0;
 
 }
-void rk2818_gpio_resume(void)
+
+static int rk2818_gpio_resume(struct sys_device *dev)
 {
 	int i;
 	
@@ -644,10 +646,11 @@ void rk2818_gpio_resume(void)
 			clk_enable(rk2818gpio_chip[i].bank->clock);
 		}
 	}
-	return;
+
+	return 0;
 }
 
-void rk2818_gpio_suspend(void)
+static int rk2818_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
 {
 	int i;
 
@@ -662,7 +665,8 @@ void rk2818_gpio_suspend(void)
 		else if(wakeups[i])
 			rk2818_gpio_write(rk2818gpio_chip[i].regbase,GPIO_INTEN,wakeups[i]);
 	}
-	return;
+
+	return 0;
 }
 
  #if 0
@@ -1201,6 +1205,26 @@ static void rk2818_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	return;
 }
 
+static struct sysdev_class rk2818_gpio_sysclass = {
+	.name		= "gpio",
+	.suspend	= rk2818_gpio_suspend,
+	.resume		= rk2818_gpio_resume,
+};
+
+static struct sys_device rk2818_gpio_device = {
+	.cls		= &rk2818_gpio_sysclass,
+};
+
+static int __init rk2818_gpio_sysinit(void)
+{
+	int ret = sysdev_class_register(&rk2818_gpio_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&rk2818_gpio_device);
+	return ret;
+}
+
+arch_initcall(rk2818_gpio_sysinit);
+
  /*----------------------------------------------------------------------
 Name	: rk2818_gpio_init
 Desc		: enable GPIO pin support.

arch/arm/mach-rk2818/include/mach/gpio.h

@@ -179,8 +179,6 @@ struct rk2818_gpio_bank {
 #ifndef __ASSEMBLY__
 extern void __init rk2818_gpio_init(struct rk2818_gpio_bank *data, int nr_banks);
 extern void __init rk2818_gpio_irq_setup(void);
-extern void rk2818_gpio_suspend(void);
-extern void rk2818_gpio_resume(void);
 /*-------------------------------------------------------------------------*/
 
 /* wrappers for "new style" GPIO calls. the old RK2818-specfic ones should

arch/arm/mach-rk2818/pm.c

@@ -175,9 +175,9 @@ static int __tcmfunc rk2818_tcm_idle(void)
 			break;
 	}
 
-	__udelay(5 << 8);
+	tcm_udelay(5 << 8, 24);
 	scu_writel(scu_clksel0, SCU_CLKSEL0_CON);
-	__udelay(5);
+	tcm_udelay(5, 24);
 
 	scu_writel(scu_mode, SCU_MODE_CON); // normal
 
@@ -187,7 +187,7 @@ static int __tcmfunc rk2818_tcm_idle(void)
 static void rk2818_idle(void)
 {
 	unsigned long old_sp;
-	unsigned long tcm_sp = ITCM_END + 1;
+	unsigned long tcm_sp = ITCM_END & ~7;
 
 	asm volatile ("mov %0, sp" : "=r" (old_sp));
 	asm volatile ("mov sp, %0" :: "r" (tcm_sp));
@@ -197,13 +197,9 @@ static void rk2818_idle(void)
 
 static int rk2818_pm_enter(suspend_state_t state)
 {
-	rk2818_gpio_suspend();
-
 	rk2818_idle();
 	__udelay(40);
 
-	rk2818_gpio_resume();
-
 	return 0;
 }