[PATCH libinput 12/26] tablet: explicitly ignore ABS_THROTTLE, ABS_RX, ABS_RY, and ABS_RZ

[Peter Hutterer]

ABS_THROTTLE:
	Tablets still advertise this axis but the mouse itself isn't available
	anymore. The Pad sends the second wheel as ABS_THROTTLE but that's a
	task for the buttonset interface.  Explanation of what the throttle
	did on page
	http://101.wacom.com/productsupport/manual/Intuos2UsersManual.pdf

ABS_RX/ABS_RY:
	These only happen on the Intuos3 device and only on the Pad device
	(kernel >= 3.17)

ABS_RZ:
	The 4D mouse for the Intuos2, obsolete.

No functional changes, this is to clarify why we're only handling a subset of
codes.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 src/evdev-tablet.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/evdev-tablet.c b/src/evdev-tablet.c
index 14fb44f..820473f 100644
--- a/src/evdev-tablet.c
+++ b/src/evdev-tablet.c
@@ -71,6 +71,17 @@ tablet_process_absolute(struct tablet_dispatch *tablet,
 	case ABS_MISC:
 		tablet->current_tool_id = e->value;
 		break;
+	/* Intuos 3 strip data. Should only happen on the Pad device, not on
+	   the Pen device. */
+	case ABS_RX:
+	case ABS_RY:
+	/* Only on the 4D mouse (Intuos2), obsolete */
+	case ABS_RZ:
+	/* Only on the 4D mouse (Intuos2), obsolete.
+	   The 24HD sends ABS_THROTTLE on the Pad device for the second
+	   wheel but we shouldn't get here on kernel >= 3.17.
+	   */
+	case ABS_THROTTLE:
 	default:
 		log_info(device->base.seat->libinput,
 			 "Unhandled ABS event code %#x\n", e->code);
-- 
2.1.0