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authorDavid Herrmann <dh.herrmann@googlemail.com>2011-11-17 14:12:02 +0100
committerJiri Kosina <jkosina@suse.cz>2011-11-22 23:08:40 +0100
commit82fb1b39581e7cdd71a6ce3cf12996711a583df2 (patch)
treefa2da049edd46c8ed1866c220581c4e2f2b68f42 /drivers/hid/hid-wiimote-ext.c
parentcb99221ba74bb16576a9c3b7e49357b6b12ff3ea (diff)
HID: wiimote: Add extension initializer stubs
Add stub functions to read and identify extensions and then initialize all connected extensions. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-wiimote-ext.c')
-rw-r--r--drivers/hid/hid-wiimote-ext.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c
index fa9c67722aca..3e3e1fc8d838 100644
--- a/drivers/hid/hid-wiimote-ext.c
+++ b/drivers/hid/hid-wiimote-ext.c
@@ -33,10 +33,48 @@ enum wiiext_type {
WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */
};
+/* diable all extensions */
+static void ext_disable(struct wiimote_ext *ext)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ext->wdata->state.lock, flags);
+ ext->motionp = false;
+ ext->ext_type = WIIEXT_NONE;
+ spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
+}
+
+static bool motionp_read(struct wiimote_ext *ext)
+{
+ return false;
+}
+
+static __u8 ext_read(struct wiimote_ext *ext)
+{
+ return WIIEXT_NONE;
+}
+
+static void ext_enable(struct wiimote_ext *ext, bool motionp, __u8 ext_type)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ext->wdata->state.lock, flags);
+ ext->motionp = motionp;
+ ext->ext_type = ext_type;
+ spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
+}
+
static void wiiext_worker(struct work_struct *work)
{
struct wiimote_ext *ext = container_of(work, struct wiimote_ext,
worker);
+ bool motionp;
+ __u8 ext_type;
+
+ ext_disable(ext);
+ motionp = motionp_read(ext);
+ ext_type = ext_read(ext);
+ ext_enable(ext, motionp, ext_type);
}
/* schedule work only once, otherwise mark for reschedule */