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ideapad: let camera_power node invisiable if no camera 

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Ike Panhc 2011-06-30 19:50:47 +08:00 committed by Matthew Garrett
parent 3371f48167
commit a84511f7fb
1 changed files with 18 additions and 0 deletions
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18
drivers/platform/x86/ideapad-laptop.c
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@ -38,6 +38,7 @@
#define CFG_BT_BIT (16)
#define CFG_3G_BIT (17)
#define CFG_WIFI_BIT (18)
#define CFG_CAMERA_BIT (19)
struct ideapad_private {
struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
@ -208,7 +209,24 @@ static struct attribute *ideapad_attributes[] = {
NULL
};
static mode_t ideapad_is_visible(struct kobject *kobj,
struct attribute *attr,
int idx)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct ideapad_private *priv = dev_get_drvdata(dev);
bool supported;
if (attr == &dev_attr_camera_power.attr)
supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
else
supported = true;
return supported ? attr->mode : 0;
}
static struct attribute_group ideapad_attribute_group = {
.is_visible = ideapad_is_visible,
.attrs = ideapad_attributes
};