diff options
| author | Ike Panhc <ike.pan@canonical.com> | 2011-06-30 19:50:47 +0800 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2011-08-05 14:45:44 -0400 |
| commit | a84511f7fbeb37e26aacb9c72f5a21ffc24e909e (patch) | |
| tree | fd7ae07ffad60c7201d7d26e28c2dbc35d398040 /drivers | |
| parent | 3371f48167e04017125dd08cc1f70fa93d2f2e17 (diff) | |
| download | lwn-a84511f7fbeb37e26aacb9c72f5a21ffc24e909e.tar.gz lwn-a84511f7fbeb37e26aacb9c72f5a21ffc24e909e.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/ideapad-laptop.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 42b9ba7e903c..1612abde5188 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -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 }; |