[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>

1 files changed, 53 insertions, 56 deletions

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 */