i2c-pca-isa: Port to the new device driver model

Port the i2c-pca-isa driver to the new device driver model. I'm
using Rene Herman's new isa bus type, as it fits the needs nicely. One
benefit is that we can now give a proper parent to our i2c adapter.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

2 files changed, 29 insertions, 8 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index ece31d2c6c64..d7e6cbb9cbef 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -547,7 +547,7 @@ config I2C_VOODOO3
 
 config I2C_PCA_ISA
         tristate "PCA9564 on an ISA bus"
-        depends on I2C
+        depends on I2C && ISA
         select I2C_ALGOPCA
         default n
         help
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index cc6536a19eca..5f94e617fe0c 100644
--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -28,6 +28,7 @@
 #include <linux/pci.h>
 #include <linux/wait.h>
 
+#include <linux/isa.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pca.h>
 
@@ -119,27 +120,26 @@ static struct i2c_adapter pca_isa_ops = {
         .name           = "PCA9564 ISA Adapter",
 };
 
-static int __init pca_isa_init(void)
+static int __devinit pca_isa_probe(struct device *dev, unsigned int id)
 {
-
         init_waitqueue_head(&pca_wait);
 
-        printk(KERN_INFO "i2c-pca-isa: i/o base %#08lx. irq %d\n", base, irq);
+        dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq);
 
         if (!request_region(base, IO_SIZE, "i2c-pca-isa")) {
-                printk(KERN_ERR "i2c-pca-isa: I/O address %#08lx is in use.\n", base);
+                dev_err(dev, "I/O address %#08lx is in use\n", base);
                 goto out;
         }
 
         if (irq > -1) {
                 if (request_irq(irq, pca_handler, 0, "i2c-pca-isa", &pca_isa_ops) < 0) {
-                        printk(KERN_ERR "i2c-pca-isa: Request irq%d failed\n", irq);
+                        dev_err(dev, "Request irq%d failed\n", irq);
                         goto out_region;
                 }
         }
 
         if (i2c_pca_add_bus(&pca_isa_ops) < 0) {
-                printk(KERN_ERR "i2c-pca-isa: Failed to add i2c bus\n");
+                dev_err(dev, "Failed to add i2c bus\n");
                 goto out_irq;
         }
 
@@ -154,7 +154,7 @@ static int __init pca_isa_init(void)
         return -ENODEV;
 }
 
-static void pca_isa_exit(void)
+static int __devexit pca_isa_remove(struct device *dev, unsigned int id)
 {
         i2c_del_adapter(&pca_isa_ops);
 
@@ -163,6 +163,27 @@ static void pca_isa_exit(void)
                 free_irq(irq, &pca_isa_ops);
         }
         release_region(base, IO_SIZE);
+
+        return 0;
+}
+
+static struct isa_driver pca_isa_driver = {
+        .probe          = pca_isa_probe,
+        .remove         = __devexit_p(pca_isa_remove),
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = "i2c-pca-isa",
+        }
+};
+
+static int __init pca_isa_init(void)
+{
+        return isa_register_driver(&pca_isa_driver, 1);
+}
+
+static void __exit pca_isa_exit(void)
+{
+        isa_unregister_driver(&pca_isa_driver);
 }
 
 MODULE_AUTHOR("Ian Campbell <icampbell@arcom.com>");