arch/x86/platform/iris/iris.c: register a platform device and a platform driver

This makes the iris driver use the platform API, so it is properly exposed
in /sys.

[akpm@linux-foundation.org: remove commented-out code, add missing space to printk, clean up code layout]
Signed-off-by: Shérab <Sebastien.Hinderer@ens-lyon.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 57 insertions, 10 deletions

diff --git a/arch/x86/platform/iris/iris.c b/arch/x86/platform/iris/iris.c
index 5917eb56b313..e6cb80f620af 100644
--- a/arch/x86/platform/iris/iris.c
+++ b/arch/x86/platform/iris/iris.c
@@ -23,6 +23,7 @@
 
 #include <linux/moduleparam.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
@@ -62,29 +63,75 @@ static void iris_power_off(void)
  * by reading its input port and seeing whether the read value is
  * meaningful.
  */
-static int iris_init(void)
+static int iris_probe(struct platform_device *pdev)
 {
-        unsigned char status;
-        if (force != 1) {
-                printk(KERN_ERR "The force parameter has not been set to 1 so the Iris poweroff handler will not be installed.\n");
-                return -ENODEV;
-        }
-        status = inb(IRIS_GIO_INPUT);
+        unsigned char status = inb(IRIS_GIO_INPUT);
         if (status == IRIS_GIO_NODEV) {
-                printk(KERN_ERR "This machine does not seem to be an Iris. Power_off handler not installed.\n");
+                printk(KERN_ERR "This machine does not seem to be an Iris. "
+                        "Power off handler not installed.\n");
                 return -ENODEV;
         }
         old_pm_power_off = pm_power_off;
         pm_power_off = &iris_power_off;
         printk(KERN_INFO "Iris power_off handler installed.\n");
-
         return 0;
 }
 
-static void iris_exit(void)
+static int iris_remove(struct platform_device *pdev)
 {
         pm_power_off = old_pm_power_off;
         printk(KERN_INFO "Iris power_off handler uninstalled.\n");
+        return 0;
+}
+
+static struct platform_driver iris_driver = {
+        .driver         = {
+                .name   = "iris",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = iris_probe,
+        .remove         = iris_remove,
+};
+
+static struct resource iris_resources[] = {
+        {
+                .start  = IRIS_GIO_BASE,
+                .end    = IRIS_GIO_OUTPUT,
+                .flags  = IORESOURCE_IO,
+                .name   = "address"
+        }
+};
+
+static struct platform_device *iris_device;
+
+static int iris_init(void)
+{
+        int ret;
+        if (force != 1) {
+                printk(KERN_ERR "The force parameter has not been set to 1."
+                        " The Iris poweroff handler will not be installed.\n");
+                return -ENODEV;
+        }
+        ret = platform_driver_register(&iris_driver);
+        if (ret < 0) {
+                printk(KERN_ERR "Failed to register iris platform driver: %d\n",
+                        ret);
+                return ret;
+        }
+        iris_device = platform_device_register_simple("iris", (-1),
+                                iris_resources, ARRAY_SIZE(iris_resources));
+        if (IS_ERR(iris_device)) {
+                printk(KERN_ERR "Failed to register iris platform device\n");
+                platform_driver_unregister(&iris_driver);
+                return PTR_ERR(iris_device);
+        }
+        return 0;
+}
+
+static void iris_exit(void)
+{
+        platform_device_unregister(iris_device);
+        platform_driver_unregister(&iris_driver);
 }
 
 module_init(iris_init);