diff options
| author | Corentin Chary <corentincj@iksaif.net> | 2011-11-26 11:00:01 +0100 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2012-03-20 17:02:06 +0100 |
| commit | a66c16627cfba7cd1da1f8bd04cab4219d09154b (patch) | |
| tree | d34b3e097ffd60d14ca4abdca3fc58c464cc7c7f /drivers/platform/x86/samsung-laptop.c | |
| parent | samsung-laptop: don't handle backlight if handled by acpi/video (diff) | |
| download | linux-a66c16627cfba7cd1da1f8bd04cab4219d09154b.tar.xz linux-a66c16627cfba7cd1da1f8bd04cab4219d09154b.zip | |
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: Corentin Chary <corentincj@iksaif.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/samsung-laptop.c')
| -rw-r--r-- | drivers/platform/x86/samsung-laptop.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c index b391a38bc7c0..9fbf5c0d3646 100644 --- a/drivers/platform/x86/samsung-laptop.c +++ b/drivers/platform/x86/samsung-laptop.c @@ -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) |