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Commit a66c1662 authored by Corentin Chary's avatar Corentin Chary Committed by Matthew Garrett
Browse files

samsung-laptop: use a sysfs group 



Will be usefull later when we will have more platform sysfs files
like battery_life_extender or usb_charge.

Signed-off-by: default avatarCorentin Chary <corentincj@iksaif.net>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent f34cd9ca

drivers/platform/x86/samsung-laptop.c

+30 −4
Original line number Diff line number Diff line
@@ -555,6 +555,10 @@ static ssize_t set_performance_level(struct device *dev, 
static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO,

		   get_performance_level, set_performance_level);



static struct attribute *platform_attributes[] = {

	&dev_attr_performance_level.attr,

	NULL

};



static int find_signature(void __iomem *memcheck, const char *testStr)

{
@@ -641,16 +645,38 @@ static int __init samsung_backlight_init(struct samsung_laptop *samsung) 
	return 0;

}



static mode_t samsung_sysfs_is_visible(struct kobject *kobj,

				       struct attribute *attr, int idx)

{

	struct device *dev = container_of(kobj, struct device, kobj);

	struct platform_device *pdev = to_platform_device(dev);

	struct samsung_laptop *samsung = platform_get_drvdata(pdev);

	bool ok = true;



	if (attr == &dev_attr_performance_level.attr)

		ok = !!samsung->config->performance_levels[0].name;



	return ok ? attr->mode : 0;

}



static struct attribute_group platform_attribute_group = {

	.is_visible = samsung_sysfs_is_visible,

	.attrs = platform_attributes

};



static void samsung_sysfs_exit(struct samsung_laptop *samsung)

{

	device_remove_file(&samsung->platform_device->dev,

			   &dev_attr_performance_level);

	struct platform_device *device = samsung->platform_device;



	sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);

}



static int __init samsung_sysfs_init(struct samsung_laptop *samsung)

{

	return device_create_file(&samsung->platform_device->dev,

				  &dev_attr_performance_level);

	struct platform_device *device = samsung->platform_device;



	return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);



}



static void samsung_sabi_exit(struct samsung_laptop *samsung)