HID: magicmouse: enable Magic Trackpad support
The trackpad speaks a similar, but different, protocol from the magic
mouse. However, only small code tweaks here and there are needed to make
basic multitouch work.
Extra logic is required for single-touch emulation of the touchpad. The
changes made here take the approach that only one finger may emulate the
single pointer when multiple fingers have touched the screen. Once that
finger is raised, all touches must be raised before any further single
touch events can be sent.
Sometimes the magic trackpad sends two distinct touch reports as one big
report. Simply splitting the packet in two and resending them through
magicmouse_raw_event ensures they are handled properly.
I also added myself to the copyright statement.
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Michael Poole <mdpoole@troilus.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 85c6d13..5ad4ea0 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -63,6 +63,7 @@
#define USB_VENDOR_ID_APPLE 0x05ac
#define USB_DEVICE_ID_APPLE_MIGHTYMOUSE 0x0304
#define USB_DEVICE_ID_APPLE_MAGICMOUSE 0x030d
+#define USB_DEVICE_ID_APPLE_MAGICTRACKPAD 0x030e
#define USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI 0x020e
#define USB_DEVICE_ID_APPLE_FOUNTAIN_ISO 0x020f
#define USB_DEVICE_ID_APPLE_GEYSER_ANSI 0x0214