1 files changed, 400 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index f62efdfd1769..c00d4ca1ee15 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -201,13 +201,14 @@ int ibmebus_register_driver(struct of_platform_driver *drv)
         /* If the driver uses devices that ibmebus doesn't know, add them */
         ibmebus_create_devices(drv->driver.of_match_table);
 
-        return of_register_driver(drv, &ibmebus_bus_type);
+        drv->driver.bus = &ibmebus_bus_type;
+        return driver_register(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_register_driver);
 
 void ibmebus_unregister_driver(struct of_platform_driver *drv)
 {
-        of_unregister_driver(drv);
+        driver_unregister(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_unregister_driver);
 
@@ -308,15 +309,410 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus,
         }
 }
 
+
 static struct bus_attribute ibmebus_bus_attrs[] = {
         __ATTR(probe, S_IWUSR, NULL, ibmebus_store_probe),
         __ATTR(remove, S_IWUSR, NULL, ibmebus_store_remove),
         __ATTR_NULL
 };
 
+static int ibmebus_bus_bus_match(struct device *dev, struct device_driver *drv)
+{
+        const struct of_device_id *matches = drv->of_match_table;
+
+        if (!matches)
+                return 0;
+
+        return of_match_device(matches, dev) != NULL;
+}
+
+static int ibmebus_bus_device_probe(struct device *dev)
+{
+        int error = -ENODEV;
+        struct of_platform_driver *drv;
+        struct platform_device *of_dev;
+        const struct of_device_id *match;
+
+        drv = to_of_platform_driver(dev->driver);
+        of_dev = to_platform_device(dev);
+
+        if (!drv->probe)
+                return error;
+
+        of_dev_get(of_dev);
+
+        match = of_match_device(drv->driver.of_match_table, dev);
+        if (match)
+                error = drv->probe(of_dev, match);
+        if (error)
+                of_dev_put(of_dev);
+
+        return error;
+}
+
+static int ibmebus_bus_device_remove(struct device *dev)
+{
+        struct platform_device *of_dev = to_platform_device(dev);
+        struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
+
+        if (dev->driver && drv->remove)
+                drv->remove(of_dev);
+        return 0;
+}
+
+static void ibmebus_bus_device_shutdown(struct device *dev)
+{
+        struct platform_device *of_dev = to_platform_device(dev);
+        struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
+
+        if (dev->driver && drv->shutdown)
+                drv->shutdown(of_dev);
+}
+
+/*
+ * ibmebus_bus_device_attrs
+ */
+static ssize_t devspec_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct platform_device *ofdev;
+
+        ofdev = to_platform_device(dev);
+        return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name);
+}
+
+static ssize_t name_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct platform_device *ofdev;
+
+        ofdev = to_platform_device(dev);
+        return sprintf(buf, "%s\n", ofdev->dev.of_node->name);
+}
+
+static ssize_t modalias_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        ssize_t len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2);
+        buf[len] = '\n';
+        buf[len+1] = 0;
+        return len+1;
+}
+
+struct device_attribute ibmebus_bus_device_attrs[] = {
+        __ATTR_RO(devspec),
+        __ATTR_RO(name),
+        __ATTR_RO(modalias),
+        __ATTR_NULL
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int ibmebus_bus_legacy_suspend(struct device *dev, pm_message_t mesg)
+{
+        struct platform_device *of_dev = to_platform_device(dev);
+        struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
+        int ret = 0;
+
+        if (dev->driver && drv->suspend)
+                ret = drv->suspend(of_dev, mesg);
+        return ret;
+}
+
+static int ibmebus_bus_legacy_resume(struct device *dev)
+{
+        struct platform_device *of_dev = to_platform_device(dev);
+        struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
+        int ret = 0;
+
+        if (dev->driver && drv->resume)
+                ret = drv->resume(of_dev);
+        return ret;
+}
+
+static int ibmebus_bus_pm_prepare(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (drv && drv->pm && drv->pm->prepare)
+                ret = drv->pm->prepare(dev);
+
+        return ret;
+}
+
+static void ibmebus_bus_pm_complete(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+
+        if (drv && drv->pm && drv->pm->complete)
+                drv->pm->complete(dev);
+}
+
+#ifdef CONFIG_SUSPEND
+
+static int ibmebus_bus_pm_suspend(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->suspend)
+                        ret = drv->pm->suspend(dev);
+        } else {
+                ret = ibmebus_bus_legacy_suspend(dev, PMSG_SUSPEND);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_suspend_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->suspend_noirq)
+                        ret = drv->pm->suspend_noirq(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_resume(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->resume)
+                        ret = drv->pm->resume(dev);
+        } else {
+                ret = ibmebus_bus_legacy_resume(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_resume_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->resume_noirq)
+                        ret = drv->pm->resume_noirq(dev);
+        }
+
+        return ret;
+}
+
+#else /* !CONFIG_SUSPEND */
+
+#define ibmebus_bus_pm_suspend          NULL
+#define ibmebus_bus_pm_resume           NULL
+#define ibmebus_bus_pm_suspend_noirq    NULL
+#define ibmebus_bus_pm_resume_noirq     NULL
+
+#endif /* !CONFIG_SUSPEND */
+
+#ifdef CONFIG_HIBERNATION
+
+static int ibmebus_bus_pm_freeze(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->freeze)
+                        ret = drv->pm->freeze(dev);
+        } else {
+                ret = ibmebus_bus_legacy_suspend(dev, PMSG_FREEZE);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_freeze_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->freeze_noirq)
+                        ret = drv->pm->freeze_noirq(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_thaw(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->thaw)
+                        ret = drv->pm->thaw(dev);
+        } else {
+                ret = ibmebus_bus_legacy_resume(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_thaw_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->thaw_noirq)
+                        ret = drv->pm->thaw_noirq(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_poweroff(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->poweroff)
+                        ret = drv->pm->poweroff(dev);
+        } else {
+                ret = ibmebus_bus_legacy_suspend(dev, PMSG_HIBERNATE);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_poweroff_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->poweroff_noirq)
+                        ret = drv->pm->poweroff_noirq(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_restore(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->restore)
+                        ret = drv->pm->restore(dev);
+        } else {
+                ret = ibmebus_bus_legacy_resume(dev);
+        }
+
+        return ret;
+}
+
+static int ibmebus_bus_pm_restore_noirq(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        int ret = 0;
+
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
+                if (drv->pm->restore_noirq)
+                        ret = drv->pm->restore_noirq(dev);
+        }
+
+        return ret;
+}
+
+#else /* !CONFIG_HIBERNATION */
+
+#define ibmebus_bus_pm_freeze           NULL
+#define ibmebus_bus_pm_thaw             NULL
+#define ibmebus_bus_pm_poweroff         NULL
+#define ibmebus_bus_pm_restore          NULL
+#define ibmebus_bus_pm_freeze_noirq     NULL
+#define ibmebus_bus_pm_thaw_noirq               NULL
+#define ibmebus_bus_pm_poweroff_noirq   NULL
+#define ibmebus_bus_pm_restore_noirq    NULL
+
+#endif /* !CONFIG_HIBERNATION */
+
+static struct dev_pm_ops ibmebus_bus_dev_pm_ops = {
+        .prepare = ibmebus_bus_pm_prepare,
+        .complete = ibmebus_bus_pm_complete,
+        .suspend = ibmebus_bus_pm_suspend,
+        .resume = ibmebus_bus_pm_resume,
+        .freeze = ibmebus_bus_pm_freeze,
+        .thaw = ibmebus_bus_pm_thaw,
+        .poweroff = ibmebus_bus_pm_poweroff,
+        .restore = ibmebus_bus_pm_restore,
+        .suspend_noirq = ibmebus_bus_pm_suspend_noirq,
+        .resume_noirq = ibmebus_bus_pm_resume_noirq,
+        .freeze_noirq = ibmebus_bus_pm_freeze_noirq,
+        .thaw_noirq = ibmebus_bus_pm_thaw_noirq,
+        .poweroff_noirq = ibmebus_bus_pm_poweroff_noirq,
+        .restore_noirq = ibmebus_bus_pm_restore_noirq,
+};
+
+#define IBMEBUS_BUS_PM_OPS_PTR  (&ibmebus_bus_dev_pm_ops)
+
+#else /* !CONFIG_PM_SLEEP */
+
+#define IBMEBUS_BUS_PM_OPS_PTR  NULL
+
+#endif /* !CONFIG_PM_SLEEP */
+
 struct bus_type ibmebus_bus_type = {
+        .name      = "ibmebus",
         .uevent    = of_device_uevent,
-        .bus_attrs = ibmebus_bus_attrs
+        .bus_attrs = ibmebus_bus_attrs,
+        .match     = ibmebus_bus_bus_match,
+        .probe     = ibmebus_bus_device_probe,
+        .remove    = ibmebus_bus_device_remove,
+        .shutdown  = ibmebus_bus_device_shutdown,
+        .dev_attrs = ibmebus_bus_device_attrs,
+        .pm        = IBMEBUS_BUS_PM_OPS_PTR,
 };
 EXPORT_SYMBOL(ibmebus_bus_type);
 
@@ -326,7 +722,7 @@ static int __init ibmebus_bus_init(void)
 
         printk(KERN_INFO "IBM eBus Device Driver\n");
 
-        err = of_bus_type_init(&ibmebus_bus_type, "ibmebus");
+        err = bus_register(&ibmebus_bus_type);
         if (err) {
                 printk(KERN_ERR "%s: failed to register IBM eBus.\n",
                        __func__);