ARM / OMAP: Use struct syscore_ops for "core" power management

Replace the sysdev class and struct sys_device used for power
management in the OMAP's GPIO code with a struct syscore_ops object
which is simpler.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index d2adcdd..bd9e321 100644 (file)
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -17,7 +17,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
@@ -1372,9 +1372,7 @@ static const struct dev_pm_ops omap_mpuio_dev_pm_ops = {
        .resume_noirq = omap_mpuio_resume_noirq,
 };
 
-/* use platform_driver for this, now that there's no longer any
- * point to sys_device (other than not disturbing old code).
- */
+/* use platform_driver for this. */
 static struct platform_driver omap_mpuio_driver = {
        .driver         = {
                .name   = "mpuio",
@@ -1745,7 +1743,7 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
 }
 
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
-static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
+static int omap_gpio_suspend(void)
 {
        int i;
 
@@ -1795,12 +1793,12 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
        return 0;
 }
 
-static int omap_gpio_resume(struct sys_device *dev)
+static void omap_gpio_resume(void)
 {
        int i;
 
        if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
-               return 0;
+               return;
 
        for (i = 0; i < gpio_bank_count; i++) {
                struct gpio_bank *bank = &gpio_bank[i];
@@ -1836,21 +1834,13 @@ static int omap_gpio_resume(struct sys_device *dev)
                __raw_writel(bank->saved_wakeup, wake_set);
                spin_unlock_irqrestore(&bank->lock, flags);
        }
-
-       return 0;
 }
 
-static struct sysdev_class omap_gpio_sysclass = {
-       .name           = "gpio",
+static struct syscore_ops omap_gpio_syscore_ops = {
        .suspend        = omap_gpio_suspend,
        .resume         = omap_gpio_resume,
 };
 
-static struct sys_device omap_gpio_device = {
-       .id             = 0,
-       .cls            = &omap_gpio_sysclass,
-};
-
 #endif
 
 #ifdef CONFIG_ARCH_OMAP2PLUS
@@ -2108,21 +2098,14 @@ postcore_initcall(omap_gpio_drv_reg);
 
 static int __init omap_gpio_sysinit(void)
 {
-       int ret = 0;
-
        mpuio_init();
 
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
-       if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
-               if (ret == 0) {
-                       ret = sysdev_class_register(&omap_gpio_sysclass);
-                       if (ret == 0)
-                               ret = sysdev_register(&omap_gpio_device);
-               }
-       }
+       if (cpu_is_omap16xx() || cpu_class_is_omap2())
+               register_syscore_ops(&omap_gpio_syscore_ops);
 #endif
 
-       return ret;
+       return 0;
 }
 
 arch_initcall(omap_gpio_sysinit);