eeepc-wmi: add touchpad sysfs file

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index a78a90d..16c7f2d 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -77,6 +77,7 @@
 #define EEEPC_WMI_DEVID_BRIGHTNESS	0x00050012
 #define EEEPC_WMI_DEVID_CAMERA		0x00060013
 #define EEEPC_WMI_DEVID_CARDREADER	0x00080013
+#define EEEPC_WMI_DEVID_TOUCHPAD	0x00100011
 #define EEEPC_WMI_DEVID_TOUCHPAD_LED	0x00100012
 
 #define EEEPC_WMI_DSTS_STATUS_BIT	0x00000001
@@ -1006,6 +1007,7 @@
 		.store  = store_##_name,				\
 	}
 
+EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD);
 EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA);
 EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER);
 
@@ -1036,6 +1038,7 @@
 	&dev_attr_cpufv.attr,
 	&dev_attr_camera.attr,
 	&dev_attr_cardr.attr,
+	&dev_attr_touchpad.attr,
 	NULL
 };
 
@@ -1050,6 +1053,8 @@
 		devid = EEEPC_WMI_DEVID_CAMERA;
 	else if (attr == &dev_attr_cardr.attr)
 		devid = EEEPC_WMI_DEVID_CARDREADER;
+	else if (attr == &dev_attr_touchpad.attr)
+		devid = EEEPC_WMI_DEVID_TOUCHPAD;
 
 	if (devid != -1)
 		supported = eeepc_wmi_get_devstate_simple(devid) != -ENODEV;