sparc: Convert flash driver to OF device probing.

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

1 files changed, 50 insertions, 80 deletions

diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c
index 7d95e151513a..715996f5c538 100644
--- a/drivers/sbus/char/flash.c
+++ b/drivers/sbus/char/flash.c
@@ -1,5 +1,4 @@
-/* $Id: flash.c,v 1.25 2001/12/21 04:56:16 davem Exp $
- * flash.c: Allow mmap access to the OBP Flash, for OBP updates.
+/* flash.c: Allow mmap access to the OBP Flash, for OBP updates.
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
  */
@@ -15,13 +14,13 @@
 #include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 #include <linux/mm.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
-#include <asm/sbus.h>
-#include <asm/ebus.h>
 #include <asm/upa.h>
 
 static DEFINE_SPINLOCK(flash_lock);
@@ -161,97 +160,68 @@ static const struct file_operations flash_fops = {
 
 static struct miscdevice flash_dev = { FLASH_MINOR, "flash", &flash_fops };
 
-static int __init flash_init(void)
+static int __devinit flash_probe(struct of_device *op,
+                                 const struct of_device_id *match)
 {
-        struct sbus_bus *sbus;
-        struct sbus_dev *sdev = NULL;
-#ifdef CONFIG_PCI
-        struct linux_ebus *ebus;
-        struct linux_ebus_device *edev = NULL;
-        struct linux_prom_registers regs[2];
-        int len, nregs;
-#endif
-        int err;
-
-        for_all_sbusdev(sdev, sbus) {
-                if (!strcmp(sdev->prom_name, "flashprom")) {
-                        if (sdev->reg_addrs[0].phys_addr == sdev->reg_addrs[1].phys_addr) {
-                                flash.read_base = ((unsigned long)sdev->reg_addrs[0].phys_addr) |
-                                        (((unsigned long)sdev->reg_addrs[0].which_io)<<32UL);
-                                flash.read_size = sdev->reg_addrs[0].reg_size;
-                                flash.write_base = flash.read_base;
-                                flash.write_size = flash.read_size;
-                        } else {
-                                flash.read_base = ((unsigned long)sdev->reg_addrs[0].phys_addr) |
-                                        (((unsigned long)sdev->reg_addrs[0].which_io)<<32UL);
-                                flash.read_size = sdev->reg_addrs[0].reg_size;
-                                flash.write_base = ((unsigned long)sdev->reg_addrs[1].phys_addr) |
-                                        (((unsigned long)sdev->reg_addrs[1].which_io)<<32UL);
-                                flash.write_size = sdev->reg_addrs[1].reg_size;
-                        }
-                        flash.busy = 0;
-                        break;
-                }
-        }
-        if (!sdev) {
-#ifdef CONFIG_PCI
-                const struct linux_prom_registers *ebus_regs;
-
-                for_each_ebus(ebus) {
-                        for_each_ebusdev(edev, ebus) {
-                                if (!strcmp(edev->prom_node->name, "flashprom"))
-                                        goto ebus_done;
-                        }
-                }
-        ebus_done:
-                if (!edev)
-                        return -ENODEV;
-
-                ebus_regs = of_get_property(edev->prom_node, "reg", &len);
-                if (!ebus_regs || (len % sizeof(regs[0])) != 0) {
-                        printk("flash: Strange reg property size %d\n", len);
-                        return -ENODEV;
-                }
-
-                nregs = len / sizeof(ebus_regs[0]);
+        struct device_node *dp = op->node;
+        struct device_node *parent;
 
-                flash.read_base = edev->resource[0].start;
-                flash.read_size = ebus_regs[0].reg_size;
+        parent = dp->parent;
 
-                if (nregs == 1) {
-                        flash.write_base = edev->resource[0].start;
-                        flash.write_size = ebus_regs[0].reg_size;
-                } else if (nregs == 2) {
-                        flash.write_base = edev->resource[1].start;
-                        flash.write_size = ebus_regs[1].reg_size;
-                } else {
-                        printk("flash: Strange number of regs %d\n", nregs);
-                        return -ENODEV;
-                }
-
-                flash.busy = 0;
-
-#else
+        if (strcmp(parent->name, "sbus") &&
+            strcmp(parent->name, "sbi") &&
+            strcmp(parent->name, "ebus"))
                 return -ENODEV;
-#endif
+
+        flash.read_base = op->resource[0].start;
+        flash.read_size = resource_size(&op->resource[0]);
+        if (op->resource[1].flags) {
+                flash.write_base = op->resource[1].start;
+                flash.write_size = resource_size(&op->resource[1]);
+        } else {
+                flash.write_base = op->resource[0].start;
+                flash.write_size = resource_size(&op->resource[0]);
         }
+        flash.busy = 0;
 
-        printk("OBP Flash: RD %lx[%lx] WR %lx[%lx]\n",
+        printk(KERN_INFO "%s: OBP Flash, RD %lx[%lx] WR %lx[%lx]\n",
+               op->node->full_name,
                flash.read_base, flash.read_size,
                flash.write_base, flash.write_size);
 
-        err = misc_register(&flash_dev);
-        if (err) {
-                printk(KERN_ERR "flash: unable to get misc minor\n");
-                return err;
-        }
+        return misc_register(&flash_dev);
+}
+
+static int __devexit flash_remove(struct of_device *op)
+{
+        misc_deregister(&flash_dev);
 
         return 0;
 }
 
+static struct of_device_id flash_match[] = {
+        {
+                .name = "flashprom",
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(of, flash_match);
+
+static struct of_platform_driver flash_driver = {
+        .name           = "flash",
+        .match_table    = flash_match,
+        .probe          = flash_probe,
+        .remove         = __devexit_p(flash_remove),
+};
+
+static int __init flash_init(void)
+{
+        return of_register_driver(&flash_driver, &of_bus_type);
+}
+
 static void __exit flash_cleanup(void)
 {
-        misc_deregister(&flash_dev);
+        of_unregister_driver(&flash_driver);
 }
 
 module_init(flash_init);