ideapad: let camera power control entry under platform driver
The entry was at /sys/devices/LNXSYSTM:00/../VPC2004:00/camera_power
move to /sys/devices/platform/ideapad/camera_power
Add document about usage of ideapad node in sysfs.
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
new file mode 100644
index 0000000..807fca2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -0,0 +1,6 @@
+What: /sys/devices/platform/ideapad/camera_power
+Date: Dec 2010
+KernelVersion: 2.6.37
+Contact: "Ike Panhc <ike.pan@canonical.com>"
+Description:
+ Control the power of camera module. 1 means on, 0 means off.
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 5998ae1..49f207f 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -282,6 +282,15 @@
/*
* Platform device
*/
+static struct attribute *ideapad_attributes[] = {
+ &dev_attr_camera_power.attr,
+ NULL
+};
+
+static struct attribute_group ideapad_attribute_group = {
+ .attrs = ideapad_attributes
+};
+
static int __devinit ideapad_platform_init(void)
{
int result;
@@ -295,8 +304,14 @@
if (result)
goto fail_platform_device;
+ result = sysfs_create_group(&ideapad_priv->platform_device->dev.kobj,
+ &ideapad_attribute_group);
+ if (result)
+ goto fail_sysfs;
return 0;
+fail_sysfs:
+ platform_device_del(ideapad_priv->platform_device);
fail_platform_device:
platform_device_put(ideapad_priv->platform_device);
return result;
@@ -304,6 +319,8 @@
static void ideapad_platform_exit(void)
{
+ sysfs_remove_group(&ideapad_priv->platform_device->dev.kobj,
+ &ideapad_attribute_group);
platform_device_unregister(ideapad_priv->platform_device);
}
/* the above is platform device */
@@ -317,50 +334,30 @@
static int ideapad_acpi_add(struct acpi_device *adevice)
{
int ret, i, cfg;
- int devs_present[5];
struct ideapad_private *priv;
if (read_method_int(adevice->handle, "_CFG", &cfg))
return -ENODEV;
- for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) {
- if (test_bit(ideapad_rfk_data[i].cfgbit, (unsigned long *)&cfg))
- devs_present[i] = 1;
- else
- devs_present[i] = 0;
- }
-
- /* The hardware switch is always present */
- devs_present[IDEAPAD_DEV_KILLSW] = 1;
-
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
ideapad_priv = priv;
+ priv->handle = adevice->handle;
+ dev_set_drvdata(&adevice->dev, priv);
ret = ideapad_platform_init();
if (ret)
goto platform_failed;
- if (devs_present[IDEAPAD_DEV_CAMERA]) {
- ret = device_create_file(&adevice->dev, &dev_attr_camera_power);
- if (ret)
- goto camera_failed;
- }
-
- priv->handle = adevice->handle;
- dev_set_drvdata(&adevice->dev, priv);
- for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) {
- if (!devs_present[i])
- continue;
-
- ideapad_register_rfkill(adevice, i);
+ for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) {
+ if (test_bit(ideapad_rfk_data[i].cfgbit, (unsigned long *)&cfg))
+ ideapad_register_rfkill(adevice, i);
}
ideapad_sync_rfk_state(adevice);
+
return 0;
-camera_failed:
- ideapad_platform_exit();
platform_failed:
kfree(priv);
return ret;
@@ -371,14 +368,12 @@
struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
int i;
- device_remove_file(&adevice->dev, &dev_attr_camera_power);
-
- for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
+ for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
ideapad_unregister_rfkill(adevice, i);
-
ideapad_platform_exit();
dev_set_drvdata(&adevice->dev, NULL);
kfree(priv);
+
return 0;
}