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

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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>
This commit is contained in:
Shérab 2012-12-18 14:21:21 -08:00 committed by Linus Torvalds
parent c24bf9b4cc
commit 88d67ee3ec
1 changed files with 57 additions and 10 deletions
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67
arch/x86/platform/iris/iris.c
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@ -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 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)
{
pm_power_off = old_pm_power_off;
printk(KERN_INFO "Iris power_off handler uninstalled.\n");
platform_device_unregister(iris_device);
platform_driver_unregister(&iris_driver);
}
module_init(iris_init);