[SPARC64]: Add of_device layer and make ebus/isa use it.

Sparcspkr and power drivers are converted, to make sure it works.
Eventually the SBUS device layer will use this as a sub-class.

I really cannot cut loose on that bit until sparc32 is given the
same infrastructure.

Signed-off-by: David S. Miller <davem@davemloft.net>

10 files changed, 585 insertions, 157 deletions

diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index 7f00189ed294..86c9fe3f3e4a 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -12,7 +12,7 @@ obj-y		:= process.o setup.o cpu.o idprom.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
 		   unaligned.o central.o pci.o starfire.o semaphore.o \
 		   power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
-		   visemul.o prom.o
+		   visemul.o prom.o of_device.o
 
 obj-$(CONFIG_PCI)	 += ebus.o isa.o pci_common.o pci_iommu.o \
 			    pci_psycho.o pci_sabre.o pci_schizo.o \
diff --git a/arch/sparc64/kernel/ebus.c b/arch/sparc64/kernel/ebus.c
index 33d79e10c653..b390a2f3a15e 100644
--- a/arch/sparc64/kernel/ebus.c
+++ b/arch/sparc64/kernel/ebus.c
@@ -475,6 +475,16 @@ probe_interrupts:
 		}
 	}
 
+	dev->ofdev.node = dp;
+	dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
+	dev->ofdev.dev.bus = &ebus_bus_type;
+	strcpy(dev->ofdev.dev.bus_id, dp->path_component_name);
+
+	/* Register with core */
+	if (of_device_register(&dev->ofdev) != 0)
+		printk(KERN_DEBUG "ebus: device registration error for %s!\n",
+		       dev->ofdev.dev.bus_id);
+
 	dp = dp->child;
 	if (dp) {
 		printk(" ->");
@@ -570,6 +580,17 @@ void __init ebus_init(void)
 		ebus->self = pdev;
 		ebus->parent = pbm = cookie->pbm;
 
+		ebus->ofdev.node = dp;
+		ebus->ofdev.dev.parent = &pdev->dev;
+		ebus->ofdev.dev.bus = &ebus_bus_type;
+		strcpy(ebus->ofdev.dev.bus_id, dp->path_component_name);
+
+		/* Register with core */
+		if (of_device_register(&ebus->ofdev) != 0)
+			printk(KERN_DEBUG "ebus: device registration error for %s!\n",
+			       ebus->ofdev.dev.bus_id);
+
+
 		child = dp->child;
 		if (!child)
 			goto next_ebus;
diff --git a/arch/sparc64/kernel/isa.c b/arch/sparc64/kernel/isa.c
index 2693f2de549c..6f16dee280a8 100644
--- a/arch/sparc64/kernel/isa.c
+++ b/arch/sparc64/kernel/isa.c
@@ -195,12 +195,25 @@ static void __init isa_fill_devices(struct sparc_isa_bridge *isa_br)
 
 		isa_dev = kmalloc(sizeof(*isa_dev), GFP_KERNEL);
 		if (!isa_dev) {
-			fatal_err("cannot allocate isa_dev");
-			prom_halt();
+			printk(KERN_DEBUG "ISA: cannot allocate isa_dev");
+			return;
 		}
 
 		memset(isa_dev, 0, sizeof(*isa_dev));
 
+		isa_dev->ofdev.node = dp;
+		isa_dev->ofdev.dev.parent = &isa_br->ofdev.dev;
+		isa_dev->ofdev.dev.bus = &isa_bus_type;
+		strcpy(isa_dev->ofdev.dev.bus_id, dp->path_component_name);
+
+		/* Register with core */
+		if (of_device_register(&isa_dev->ofdev) != 0) {
+			printk(KERN_DEBUG "isa: device registration error for %s!\n",
+			       isa_dev->ofdev.dev.bus_id);
+			kfree(isa_dev);
+			goto next_sibling;
+		}
+
 		/* Link it in. */
 		isa_dev->next = NULL;
 		if (isa_br->devices == NULL) {
@@ -226,6 +239,7 @@ static void __init isa_fill_devices(struct sparc_isa_bridge *isa_br)
 
 		printk("]");
 
+	next_sibling:
 		dp = dp->sibling;
 	}
 }
@@ -244,6 +258,7 @@ void __init isa_init(void)
 		struct pcidev_cookie *pdev_cookie;
 		struct pci_pbm_info *pbm;
 		struct sparc_isa_bridge *isa_br;
+		struct device_node *dp;
 
 		pdev_cookie = pdev->sysdata;
 		if (!pdev_cookie) {
@@ -252,15 +267,29 @@ void __init isa_init(void)
 			continue;
 		}
 		pbm = pdev_cookie->pbm;
+		dp = pdev_cookie->prom_node;
 
 		isa_br = kmalloc(sizeof(*isa_br), GFP_KERNEL);
 		if (!isa_br) {
-			fatal_err("cannot allocate sparc_isa_bridge");
-			prom_halt();
+			printk(KERN_DEBUG "isa: cannot allocate sparc_isa_bridge");
+			return;
 		}
 
 		memset(isa_br, 0, sizeof(*isa_br));
 
+		isa_br->ofdev.node = dp;
+		isa_br->ofdev.dev.parent = &pdev->dev;
+		isa_br->ofdev.dev.bus = &isa_bus_type;
+		strcpy(isa_br->ofdev.dev.bus_id, dp->path_component_name);
+
+		/* Register with core */
+		if (of_device_register(&isa_br->ofdev) != 0) {
+			printk(KERN_DEBUG "isa: device registration error for %s!\n",
+			       isa_br->ofdev.dev.bus_id);
+			kfree(isa_br);
+			return;
+		}
+
 		/* Link it in. */
 		isa_br->next = isa_chain;
 		isa_chain = isa_br;
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
new file mode 100644
index 000000000000..566aa343aa62
--- /dev/null
+++ b/arch/sparc64/kernel/of_device.c
@@ -0,0 +1,279 @@
+#include <linux/config.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/slab.h>
+
+#include <asm/errno.h>
+#include <asm/of_device.h>
+
+/**
+ * of_match_device - Tell if an of_device structure has a matching
+ * of_match structure
+ * @ids: array of of device match structures to search in
+ * @dev: the of device structure to match against
+ *
+ * Used by a driver to check whether an of_device present in the
+ * system is in its list of supported devices.
+ */
+const struct of_device_id *of_match_device(const struct of_device_id *matches,
+					const struct of_device *dev)
+{
+	if (!dev->node)
+		return NULL;
+	while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
+		int match = 1;
+		if (matches->name[0])
+			match &= dev->node->name
+				&& !strcmp(matches->name, dev->node->name);
+		if (matches->type[0])
+			match &= dev->node->type
+				&& !strcmp(matches->type, dev->node->type);
+		if (matches->compatible[0])
+			match &= of_device_is_compatible(dev->node,
+							 matches->compatible);
+		if (match)
+			return matches;
+		matches++;
+	}
+	return NULL;
+}
+
+static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct of_device * of_dev = to_of_device(dev);
+	struct of_platform_driver * of_drv = to_of_platform_driver(drv);
+	const struct of_device_id * matches = of_drv->match_table;
+
+	if (!matches)
+		return 0;
+
+	return of_match_device(matches, of_dev) != NULL;
+}
+
+struct of_device *of_dev_get(struct of_device *dev)
+{
+	struct device *tmp;
+
+	if (!dev)
+		return NULL;
+	tmp = get_device(&dev->dev);
+	if (tmp)
+		return to_of_device(tmp);
+	else
+		return NULL;
+}
+
+void of_dev_put(struct of_device *dev)
+{
+	if (dev)
+		put_device(&dev->dev);
+}
+
+
+static int of_device_probe(struct device *dev)
+{
+	int error = -ENODEV;
+	struct of_platform_driver *drv;
+	struct of_device *of_dev;
+	const struct of_device_id *match;
+
+	drv = to_of_platform_driver(dev->driver);
+	of_dev = to_of_device(dev);
+
+	if (!drv->probe)
+		return error;
+
+	of_dev_get(of_dev);
+
+	match = of_match_device(drv->match_table, of_dev);
+	if (match)
+		error = drv->probe(of_dev, match);
+	if (error)
+		of_dev_put(of_dev);
+
+	return error;
+}
+
+static int of_device_remove(struct device *dev)
+{
+	struct of_device * of_dev = to_of_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 int of_device_suspend(struct device *dev, pm_message_t state)
+{
+	struct of_device * of_dev = to_of_device(dev);
+	struct of_platform_driver * drv = to_of_platform_driver(dev->driver);
+	int error = 0;
+
+	if (dev->driver && drv->suspend)
+		error = drv->suspend(of_dev, state);
+	return error;
+}
+
+static int of_device_resume(struct device * dev)
+{
+	struct of_device * of_dev = to_of_device(dev);
+	struct of_platform_driver * drv = to_of_platform_driver(dev->driver);
+	int error = 0;
+
+	if (dev->driver && drv->resume)
+		error = drv->resume(of_dev);
+	return error;
+}
+
+#ifdef CONFIG_PCI
+struct bus_type isa_bus_type = {
+       .name	= "isa",
+       .match	= of_platform_bus_match,
+       .probe	= of_device_probe,
+       .remove	= of_device_remove,
+       .suspend	= of_device_suspend,
+       .resume	= of_device_resume,
+};
+
+struct bus_type ebus_bus_type = {
+       .name	= "ebus",
+       .match	= of_platform_bus_match,
+       .probe	= of_device_probe,
+       .remove	= of_device_remove,
+       .suspend	= of_device_suspend,
+       .resume	= of_device_resume,
+};
+#endif
+
+#ifdef CONFIG_SBUS
+struct bus_type sbus_bus_type = {
+       .name	= "sbus",
+       .match	= of_platform_bus_match,
+       .probe	= of_device_probe,
+       .remove	= of_device_remove,
+       .suspend	= of_device_suspend,
+       .resume	= of_device_resume,
+};
+#endif
+
+static int __init of_bus_driver_init(void)
+{
+	int err = 0;
+
+#ifdef CONFIG_PCI
+	if (!err)
+		err = bus_register(&isa_bus_type);
+	if (!err)
+		err = bus_register(&ebus_bus_type);
+#endif
+#ifdef CONFIG_SBUS
+	if (!err)
+		err = bus_register(&sbus_bus_type);
+#endif
+	return 0;
+}
+
+postcore_initcall(of_bus_driver_init);
+
+int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
+{
+	/* initialize common driver fields */
+	drv->driver.name = drv->name;
+	drv->driver.bus = bus;
+
+	/* register with core */
+	return driver_register(&drv->driver);
+}
+
+void of_unregister_driver(struct of_platform_driver *drv)
+{
+	driver_unregister(&drv->driver);
+}
+
+
+static ssize_t dev_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct of_device *ofdev;
+
+	ofdev = to_of_device(dev);
+	return sprintf(buf, "%s", ofdev->node->full_name);
+}
+
+static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
+
+/**
+ * of_release_dev - free an of device structure when all users of it are finished.
+ * @dev: device that's been disconnected
+ *
+ * Will be called only by the device core when all users of this of device are
+ * done.
+ */
+void of_release_dev(struct device *dev)
+{
+	struct of_device *ofdev;
+
+        ofdev = to_of_device(dev);
+
+	kfree(ofdev);
+}
+
+int of_device_register(struct of_device *ofdev)
+{
+	int rc;
+
+	BUG_ON(ofdev->node == NULL);
+
+	rc = device_register(&ofdev->dev);
+	if (rc)
+		return rc;
+
+	device_create_file(&ofdev->dev, &dev_attr_devspec);
+
+	return 0;
+}
+
+void of_device_unregister(struct of_device *ofdev)
+{
+	device_remove_file(&ofdev->dev, &dev_attr_devspec);
+	device_unregister(&ofdev->dev);
+}
+
+struct of_device* of_platform_device_create(struct device_node *np,
+					    const char *bus_id,
+					    struct device *parent,
+					    struct bus_type *bus)
+{
+	struct of_device *dev;
+
+	dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return NULL;
+	memset(dev, 0, sizeof(*dev));
+
+	dev->dev.parent = parent;
+	dev->dev.bus = bus;
+	dev->dev.release = of_release_dev;
+
+	strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
+
+	if (of_device_register(dev) != 0) {
+		kfree(dev);
+		return NULL;
+	}
+
+	return dev;
+}
+
+EXPORT_SYMBOL(of_match_device);
+EXPORT_SYMBOL(of_register_driver);
+EXPORT_SYMBOL(of_unregister_driver);
+EXPORT_SYMBOL(of_device_register);
+EXPORT_SYMBOL(of_device_unregister);
+EXPORT_SYMBOL(of_dev_get);
+EXPORT_SYMBOL(of_dev_put);
+EXPORT_SYMBOL(of_platform_device_create);
+EXPORT_SYMBOL(of_release_dev);
diff --git a/arch/sparc64/kernel/power.c b/arch/sparc64/kernel/power.c
index 75159a7843f1..9496c7734014 100644
--- a/arch/sparc64/kernel/power.c
+++ b/arch/sparc64/kernel/power.c
@@ -115,66 +115,15 @@ static int __init has_button_interrupt(unsigned int irq, struct device_node *dp)
 	return 1;
 }
 
-static int __init power_probe_ebus(struct resource **resp, unsigned int *irq_p, struct device_node **prom_node_p)
+static void __devinit power_probe_common(struct of_device *dev, struct resource *res, unsigned int irq)
 {
-	struct linux_ebus *ebus;
-	struct linux_ebus_device *edev;
-
-	for_each_ebus(ebus) {
-		for_each_ebusdev(edev, ebus) {
-			if (!strcmp(edev->prom_node->name, "power")) {
-				*resp = &edev->resource[0];
-				*irq_p = edev->irqs[0];
-				*prom_node_p = edev->prom_node;
-				return 0;
-			}
-		}
-	}
-	return -ENODEV;
-}
-
-static int __init power_probe_isa(struct resource **resp, unsigned int *irq_p, struct device_node **prom_node_p)
-{
-	struct sparc_isa_bridge *isa_bus;
-	struct sparc_isa_device *isa_dev;
-
-	for_each_isa(isa_bus) {
-		for_each_isadev(isa_dev, isa_bus) {
-			if (!strcmp(isa_dev->prom_node->name, "power")) {
-				*resp = &isa_dev->resource;
-				*irq_p = isa_dev->irq;
-				*prom_node_p = isa_dev->prom_node;
-				return 0;
-			}
-		}
-	}
-	return -ENODEV;
-}
-
-void __init power_init(void)
-{
-	struct resource *res = NULL;
-	unsigned int irq;
-	struct device_node *dp;
-	static int invoked;
-
-	if (invoked)
-		return;
-	invoked = 1;
-
-	if (!power_probe_ebus(&res, &irq, &dp))
-		goto found;
-
-	if (!power_probe_isa(&res, &irq, &dp))
-		goto found;
-
-	return;
-
-found:
 	power_reg = ioremap(res->start, 0x4);
+
 	printk("power: Control reg at %p ... ", power_reg);
+
 	poweroff_method = machine_halt;  /* able to use the standard halt */
-	if (has_button_interrupt(irq, dp)) {
+
+	if (has_button_interrupt(irq, dev->node)) {
 		if (kernel_thread(powerd, NULL, CLONE_FS) < 0) {
 			printk("Failed to start power daemon.\n");
 			return;
@@ -188,4 +137,52 @@ found:
 		printk("not using powerd.\n");
 	}
 }
+
+static struct of_device_id power_match[] = {
+	{
+		.name = "power",
+	},
+	{},
+};
+
+static int __devinit ebus_power_probe(struct of_device *dev, const struct of_device_id *match)
+{
+	struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
+	struct resource *res = &edev->resource[0];
+	unsigned int irq = edev->irqs[0];
+
+	power_probe_common(dev, res,irq);
+
+	return 0;
+}
+
+static struct of_platform_driver ebus_power_driver = {
+	.name		= "power",
+	.match_table	= power_match,
+	.probe		= ebus_power_probe,
+};
+
+static int __devinit isa_power_probe(struct of_device *dev, const struct of_device_id *match)
+{
+	struct sparc_isa_device *idev = to_isa_device(&dev->dev);
+	struct resource *res = &idev->resource;
+	unsigned int irq = idev->irq;
+
+	power_probe_common(dev, res,irq);
+
+	return 0;
+}
+
+static struct of_platform_driver isa_power_driver = {
+	.name		= "power",
+	.match_table	= power_match,
+	.probe		= isa_power_probe,
+};
+
+void __init power_init(void)
+{
+	of_register_driver(&ebus_power_driver, &ebus_bus_type);
+	of_register_driver(&isa_power_driver, &isa_bus_type);
+	return;
+}
 #endif /* CONFIG_PCI */
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 4bad588d0e5d..a6dfc7455733 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -26,7 +26,7 @@ config INPUT_PCSPKR
 
 config INPUT_SPARCSPKR
 	tristate "SPARC Speaker support"
-	depends on PCI && SPARC
+	depends on PCI && SPARC64
 	help
 	  Say Y here if you want the standard Speaker on Sparc PCI systems
 	  to be used for bells and whistles.
diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
index ed95dc9420dd..42c11fbf3c79 100644
--- a/drivers/input/misc/sparcspkr.c
+++ b/drivers/input/misc/sparcspkr.c
@@ -2,7 +2,7 @@
  *  Driver for PC-speaker like devices found on various Sparc systems.
  *
  *  Copyright (c) 2002 Vojtech Pavlik
- *  Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ *  Copyright (c) 2002, 2006 David S. Miller (davem@davemloft.net)
  */
 #include <linux/config.h>
 #include <linux/kernel.h>
@@ -13,21 +13,23 @@
 
 #include <asm/io.h>
 #include <asm/ebus.h>
-#ifdef CONFIG_SPARC64
 #include <asm/isa.h>
-#endif
 
-MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 MODULE_DESCRIPTION("Sparc Speaker beeper driver");
 MODULE_LICENSE("GPL");
 
-const char *beep_name;
-static unsigned long beep_iobase;
-static int (*beep_event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
-static DEFINE_SPINLOCK(beep_lock);
+struct sparcspkr_state {
+	const char		*name;
+	unsigned long		iobase;
+	int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
+	spinlock_t		lock;
+	struct input_dev	*input_dev;
+};
 
 static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(dev->cdev.dev);
 	unsigned int count = 0;
 	unsigned long flags;
 
@@ -43,24 +45,24 @@ static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned in
 	if (value > 20 && value < 32767)
 		count = 1193182 / value;
 
-	spin_lock_irqsave(&beep_lock, flags);
+	spin_lock_irqsave(&state->lock, flags);
 
 	/* EBUS speaker only has on/off state, the frequency does not
 	 * appear to be programmable.
 	 */
-	if (beep_iobase & 0x2UL)
-		outb(!!count, beep_iobase);
+	if (state->iobase & 0x2UL)
+		outb(!!count, state->iobase);
 	else
-		outl(!!count, beep_iobase);
+		outl(!!count, state->iobase);
 
-	spin_unlock_irqrestore(&beep_lock, flags);
+	spin_unlock_irqrestore(&state->lock, flags);
 
 	return 0;
 }
 
-#ifdef CONFIG_SPARC64
 static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(dev->cdev.dev);
 	unsigned int count = 0;
 	unsigned long flags;
 
@@ -76,29 +78,29 @@ static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int
 	if (value > 20 && value < 32767)
 		count = 1193182 / value;
 
-	spin_lock_irqsave(&beep_lock, flags);
+	spin_lock_irqsave(&state->lock, flags);
 
 	if (count) {
 		/* enable counter 2 */
-		outb(inb(beep_iobase + 0x61) | 3, beep_iobase + 0x61);
+		outb(inb(state->iobase + 0x61) | 3, state->iobase + 0x61);
 		/* set command for counter 2, 2 byte write */
-		outb(0xB6, beep_iobase + 0x43);
+		outb(0xB6, state->iobase + 0x43);
 		/* select desired HZ */
-		outb(count & 0xff, beep_iobase + 0x42);
-		outb((count >> 8) & 0xff, beep_iobase + 0x42);
+		outb(count & 0xff, state->iobase + 0x42);
+		outb((count >> 8) & 0xff, state->iobase + 0x42);
 	} else {
 		/* disable counter 2 */
-		outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
+		outb(inb_p(state->iobase + 0x61) & 0xFC, state->iobase + 0x61);
 	}
 
-	spin_unlock_irqrestore(&beep_lock, flags);
+	spin_unlock_irqrestore(&state->lock, flags);
 
 	return 0;
 }
-#endif
 
-static int __devinit sparcspkr_probe(struct platform_device *dev)
+static int __devinit sparcspkr_probe(struct device *dev)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(dev);
 	struct input_dev *input_dev;
 	int error;
 
@@ -106,18 +108,18 @@ static int __devinit sparcspkr_probe(struct platform_device *dev)
 	if (!input_dev)
 		return -ENOMEM;
 
-	input_dev->name = beep_name;
+	input_dev->name = state->name;
 	input_dev->phys = "sparc/input0";
 	input_dev->id.bustype = BUS_ISA;
 	input_dev->id.vendor = 0x001f;
 	input_dev->id.product = 0x0001;
 	input_dev->id.version = 0x0100;
-	input_dev->cdev.dev = &dev->dev;
+	input_dev->cdev.dev = dev;
 
 	input_dev->evbit[0] = BIT(EV_SND);
 	input_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
 
-	input_dev->event = beep_event;
+	input_dev->event = state->event;
 
 	error = input_register_device(input_dev);
 	if (error) {
@@ -125,111 +127,137 @@ static int __devinit sparcspkr_probe(struct platform_device *dev)
 		return error;
 	}
 
-	platform_set_drvdata(dev, input_dev);
+	state->input_dev = input_dev;
 
 	return 0;
 }
 
-static int __devexit sparcspkr_remove(struct platform_device *dev)
+static int __devexit sparcspkr_remove(struct of_device *dev)
 {
-	struct input_dev *input_dev = platform_get_drvdata(dev);
+	struct sparcspkr_state *state = dev_get_drvdata(&dev->dev);
+	struct input_dev *input_dev = state->input_dev;
 
-	input_unregister_device(input_dev);
-	platform_set_drvdata(dev, NULL);
 	/* turn off the speaker */
-	beep_event(NULL, EV_SND, SND_BELL, 0);
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	input_unregister_device(input_dev);
+
+	dev_set_drvdata(&dev->dev, NULL);
+	kfree(state);
 
 	return 0;
 }
 
-static void sparcspkr_shutdown(struct platform_device *dev)
+static int sparcspkr_shutdown(struct of_device *dev)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(&dev->dev);
+	struct input_dev *input_dev = state->input_dev;
+
 	/* turn off the speaker */
-	beep_event(NULL, EV_SND, SND_BELL, 0);
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	return 0;
+}
+
+static int __devinit ebus_beep_probe(struct of_device *dev, const struct of_device_id *match)
+{
+	struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
+	struct sparcspkr_state *state;
+	int err;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
+
+	state->name = "Sparc EBUS Speaker";
+	state->iobase = edev->resource[0].start;
+	state->event = ebus_spkr_event;
+	spin_lock_init(&state->lock);
+
+	dev_set_drvdata(&dev->dev, state);
+
+	err = sparcspkr_probe(&dev->dev);
+	if (err) {
+		dev_set_drvdata(&dev->dev, NULL);
+		kfree(state);
+	}
+
+	return 0;
 }
 
-static struct platform_driver sparcspkr_platform_driver = {
-	.driver		= {
-		.name	= "sparcspkr",
-		.owner	= THIS_MODULE,
+static struct of_device_id ebus_beep_match[] = {
+	{
+		.name = "beep",
 	},
-	.probe		= sparcspkr_probe,
-	.remove		= __devexit_p(sparcspkr_remove),
-	.shutdown	= sparcspkr_shutdown,
+	{},
 };
 
-static struct platform_device *sparcspkr_platform_device;
+static struct of_platform_driver ebus_beep_driver = {
+	.name		= "beep",
+	.match_table	= ebus_beep_match,
+	.probe		= ebus_beep_probe,
+	.remove		= sparcspkr_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
 
-static int __init sparcspkr_drv_init(void)
+static int __devinit isa_beep_probe(struct of_device *dev, const struct of_device_id *match)
 {
-	int error;
+	struct sparc_isa_device *idev = to_isa_device(&dev->dev);
+	struct sparcspkr_state *state;
+	int err;
 
-	error = platform_driver_register(&sparcspkr_platform_driver);
-	if (error)
-		return error;
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
 
-	sparcspkr_platform_device = platform_device_alloc("sparcspkr", -1);
-	if (!sparcspkr_platform_device) {
-		error = -ENOMEM;
-		goto err_unregister_driver;
-	}
+	state->name = "Sparc ISA Speaker";
+	state->iobase = idev->resource.start;
+	state->event = isa_spkr_event;
+	spin_lock_init(&state->lock);
+
+	dev_set_drvdata(&dev->dev, state);
 
-	error = platform_device_add(sparcspkr_platform_device);
-	if (error)
-		goto err_free_device;
+	err = sparcspkr_probe(&dev->dev);
+	if (err) {
+		dev_set_drvdata(&dev->dev, NULL);
+		kfree(state);
+	}
 
 	return 0;
+}
 
- err_free_device:
-	platform_device_put(sparcspkr_platform_device);
- err_unregister_driver:
-	platform_driver_unregister(&sparcspkr_platform_driver);
+static struct of_device_id isa_beep_match[] = {
+	{
+		.name = "dma",
+	},
+	{},
+};
 
-	return error;
-}
+static struct of_platform_driver isa_beep_driver = {
+	.name		= "beep",
+	.match_table	= isa_beep_match,
+	.probe		= isa_beep_probe,
+	.remove		= sparcspkr_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
 
 static int __init sparcspkr_init(void)
 {
-	struct linux_ebus *ebus;
-	struct linux_ebus_device *edev;
-#ifdef CONFIG_SPARC64
-	struct sparc_isa_bridge *isa_br;
-	struct sparc_isa_device *isa_dev;
-#endif
-
-	for_each_ebus(ebus) {
-		for_each_ebusdev(edev, ebus) {
-			if (!strcmp(edev->prom_node->name, "beep")) {
-				beep_name = "Sparc EBUS Speaker";
-				beep_event = ebus_spkr_event;
-				beep_iobase = edev->resource[0].start;
-				return sparcspkr_drv_init();
-			}
-		}
-	}
-#ifdef CONFIG_SPARC64
-	for_each_isa(isa_br) {
-		for_each_isadev(isa_dev, isa_br) {
-			/* A hack, the beep device's base lives in
-			 * the DMA isa node.
-			 */
-			if (!strcmp(isa_dev->prom_node->name, "dma")) {
-				beep_name = "Sparc ISA Speaker";
-				beep_event = isa_spkr_event,
-				beep_iobase = isa_dev->resource.start;
-				return sparcspkr_drv_init();
-			}
-		}
+	int err = of_register_driver(&ebus_beep_driver, &ebus_bus_type);
+
+	if (!err) {
+		err = of_register_driver(&isa_beep_driver, &isa_bus_type);
+		if (err)
+			of_unregister_driver(&ebus_beep_driver);
 	}
-#endif
 
-	return -ENODEV;
+	return err;
 }
 
 static void __exit sparcspkr_exit(void)
 {
-	platform_device_unregister(sparcspkr_platform_device);
-	platform_driver_unregister(&sparcspkr_platform_driver);
+	of_unregister_driver(&ebus_beep_driver);
+	of_unregister_driver(&isa_beep_driver);
 }
 
 module_init(sparcspkr_init);
diff --git a/include/asm-sparc64/ebus.h b/include/asm-sparc64/ebus.h
index 545882bd3563..a4afe9d5703a 100644
--- a/include/asm-sparc64/ebus.h
+++ b/include/asm-sparc64/ebus.h
@@ -11,6 +11,7 @@
 #include <asm/pbm.h>
 #include <asm/oplib.h>
 #include <asm/prom.h>
+#include <asm/of_device.h>
 
 struct linux_ebus_child {
 	struct linux_ebus_child		*next;
@@ -24,6 +25,7 @@ struct linux_ebus_child {
 };
 
 struct linux_ebus_device {
+	struct of_device		ofdev;
 	struct linux_ebus_device	*next;
 	struct linux_ebus_child		*children;
 	struct linux_ebus		*bus;
@@ -33,8 +35,10 @@ struct linux_ebus_device {
 	unsigned int			 irqs[PROMINTR_MAX];
 	int				 num_irqs;
 };
+#define to_ebus_device(d) container_of(d, struct linux_ebus_device, ofdev.dev)
 
 struct linux_ebus {
+	struct of_device		ofdev;
 	struct linux_ebus		*next;
 	struct linux_ebus_device	*devices;
 	struct pci_pbm_info		*parent;
@@ -43,6 +47,7 @@ struct linux_ebus {
 	int				 is_rio;
 	struct device_node		*prom_node;
 };
+#define to_ebus(d) container_of(d, struct linux_ebus, ofdev.dev)
 
 struct ebus_dma_info {
 	spinlock_t	lock;
diff --git a/include/asm-sparc64/isa.h b/include/asm-sparc64/isa.h
index 2e7fb18ec1be..d9728b9031fc 100644
--- a/include/asm-sparc64/isa.h
+++ b/include/asm-sparc64/isa.h
@@ -10,10 +10,12 @@
 #include <asm/pbm.h>
 #include <asm/oplib.h>
 #include <asm/prom.h>
+#include <asm/of_device.h>
 
 struct sparc_isa_bridge;
 
 struct sparc_isa_device {
+	struct of_device	ofdev;
 	struct sparc_isa_device	*next;
 	struct sparc_isa_device	*child;
 	struct sparc_isa_bridge	*bus;
@@ -21,8 +23,10 @@ struct sparc_isa_device {
 	struct resource		resource;
 	unsigned int		irq;
 };
+#define to_isa_device(d) container_of(d, struct sparc_isa_device, ofdev.dev)
 
 struct sparc_isa_bridge {
+	struct of_device	ofdev;
 	struct sparc_isa_bridge	*next;
 	struct sparc_isa_device	*devices;
 	struct pci_pbm_info	*parent;
@@ -30,6 +34,7 @@ struct sparc_isa_bridge {
 	int			index;
 	struct device_node	*prom_node;
 };
+#define to_isa_bridge(d) container_of(d, struct sparc_isa_bridge, ofdev.dev)
 
 extern struct sparc_isa_bridge	*isa_chain;
 
diff --git a/include/asm-sparc64/of_device.h b/include/asm-sparc64/of_device.h
new file mode 100644
index 000000000000..ceea825899ce
--- /dev/null
+++ b/include/asm-sparc64/of_device.h
@@ -0,0 +1,64 @@
+#ifndef _ASM_SPARC64_OF_DEVICE_H
+#define _ASM_SPARC64_OF_DEVICE_H
+#ifdef __KERNEL__
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <asm/prom.h>
+
+extern struct bus_type isa_bus_type;
+extern struct bus_type ebus_bus_type;
+extern struct bus_type sbus_bus_type;
+
+/*
+ * The of_device is a kind of "base class" that is a superset of
+ * struct device for use by devices attached to an OF node and
+ * probed using OF properties.
+ */
+struct of_device
+{
+	struct device_node	*node;		/* OF device node */
+	struct device		dev;		/* Generic device interface */
+};
+#define	to_of_device(d) container_of(d, struct of_device, dev)
+
+extern const struct of_device_id *of_match_device(
+	const struct of_device_id *matches, const struct of_device *dev);
+
+extern struct of_device *of_dev_get(struct of_device *dev);
+extern void of_dev_put(struct of_device *dev);
+
+/*
+ * An of_platform_driver driver is attached to a basic of_device on
+ * the ISA, EBUS, and SBUS busses on sparc64.
+ */
+struct of_platform_driver
+{
+	char			*name;
+	struct of_device_id	*match_table;
+	struct module		*owner;
+
+	int	(*probe)(struct of_device* dev, const struct of_device_id *match);
+	int	(*remove)(struct of_device* dev);
+
+	int	(*suspend)(struct of_device* dev, pm_message_t state);
+	int	(*resume)(struct of_device* dev);
+	int	(*shutdown)(struct of_device* dev);
+
+	struct device_driver	driver;
+};
+#define	to_of_platform_driver(drv) container_of(drv,struct of_platform_driver, driver)
+
+extern int of_register_driver(struct of_platform_driver *drv,
+			      struct bus_type *bus);
+extern void of_unregister_driver(struct of_platform_driver *drv);
+extern int of_device_register(struct of_device *ofdev);
+extern void of_device_unregister(struct of_device *ofdev);
+extern struct of_device *of_platform_device_create(struct device_node *np,
+						   const char *bus_id,
+						   struct device *parent,
+						   struct bus_type *bus);
+extern void of_release_dev(struct device *dev);
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_OF_DEVICE_H */