i2c-elektor: Port to the new device driver model

Port the i2c-elektor 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>

1 files changed, 39 insertions, 12 deletions

diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c
index 834967464814..804f0a551c05 100644
--- a/drivers/i2c/busses/i2c-elektor.c
+++ b/drivers/i2c/busses/i2c-elektor.c
@@ -35,6 +35,7 @@
 #include <linux/pci.h>
 #include <linux/wait.h>
 
+#include <linux/isa.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-pcf.h>
 
@@ -207,7 +208,7 @@ static struct i2c_adapter pcf_isa_ops = {
         .name           = "i2c-elektor",
 };
 
-static int __init i2c_pcfisa_init(void)
+static int __devinit elektor_match(struct device *dev, unsigned int id)
 {
 #ifdef __alpha__
         /* check to see we have memory mapped PCF8584 connected to the
@@ -222,9 +223,8 @@ static int __init i2c_pcfisa_init(void)
                         /* yeap, we've found cypress, let's check config */
                         if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
 
-                                pr_debug("%s: found cy82c693, config "
-                                         "register 0x47 = 0x%02x\n",
-                                         pcf_isa_ops.name, config);
+                                dev_dbg(dev, "found cy82c693, config "
+                                        "register 0x47 = 0x%02x\n", config);
 
                                 /* UP2000 board has this register set to 0xe1,
                                    but the most significant bit as seems can be
@@ -244,9 +244,9 @@ static int __init i2c_pcfisa_init(void)
                                            8.25 MHz (PCI/4) clock
                                            (this can be read from cypress) */
                                         clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
-                                        pr_info("%s: found API UP2000 like "
-                                                "board, will probe PCF8584 "
-                                                "later\n", pcf_isa_ops.name);
+                                        dev_info(dev, "found API UP2000 like "
+                                                 "board, will probe PCF8584 "
+                                                 "later\n");
                                 }
                         }
                         pci_dev_put(cy693_dev);
@@ -256,22 +256,27 @@ static int __init i2c_pcfisa_init(void)
 
         /* sanity checks for mmapped I/O */
         if (mmapped && base < 0xc8000) {
-                printk(KERN_ERR "%s: incorrect base address (%#x) specified "
-                       "for mmapped I/O\n", pcf_isa_ops.name, base);
-                return -ENODEV;
+                dev_err(dev, "incorrect base address (%#x) specified "
+                       "for mmapped I/O\n", base);
+                return 0;
         }
 
         if (base == 0) {
                 base = DEFAULT_BASE;
         }
+        return 1;
+}
 
+static int __devinit elektor_probe(struct device *dev, unsigned int id)
+{
         init_waitqueue_head(&pcf_wait);
         if (pcf_isa_init())
                 return -ENODEV;
+        pcf_isa_ops.dev.parent = dev;
         if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
                 goto fail;
 
-        dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base);
+        dev_info(dev, "found device at %#x\n", base);
 
         return 0;
 
@@ -291,7 +296,7 @@ static int __init i2c_pcfisa_init(void)
         return -ENODEV;
 }
 
-static void i2c_pcfisa_exit(void)
+static int __devexit elektor_remove(struct device *dev, unsigned int id)
 {
         i2c_del_adapter(&pcf_isa_ops);
 
@@ -307,6 +312,28 @@ static void i2c_pcfisa_exit(void)
                 iounmap(base_iomem);
                 release_mem_region(base, 2);
         }
+
+        return 0;
+}
+
+static struct isa_driver i2c_elektor_driver = {
+        .match          = elektor_match,
+        .probe          = elektor_probe,
+        .remove         = __devexit_p(elektor_remove),
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = "i2c-elektor",
+        },
+};
+
+static int __init i2c_pcfisa_init(void)
+{
+        return isa_register_driver(&i2c_elektor_driver, 1);
+}
+
+static void __exit i2c_pcfisa_exit(void)
+{
+        isa_unregister_driver(&i2c_elektor_driver);
 }
 
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");