Commit 80a469e4 authored Oct 11, 2010 by Henrik Rydberg

hid: egalax: Report zero as minimum pressure



The firmware reports a logical minimum of one, but in order for
userspace applications to correctly map all reported values to
non-zero pressure, the driver needs to report a logical minimum of
zero.  Fixed with this patch.

Tested-by: Philipp Merkel <mail@philmerk.de>
Cc: Stephane Chatty <chatty@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

parent b88cbd3a

drivers/hid/hid-egalax.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -90,6 +90,7 @@ static int egalax_input_mapping(struct hid_device hdev, struct hid_input hi,
		set_abs(input, ABS_MT_TRACKING_ID, field, 0);
		return 1;
		case HID_DG_TIPPRESSURE:
		field->logical_minimum = 0;
		hid_map_usage(hi, usage, bit, max,
		EV_ABS, ABS_MT_PRESSURE);
		set_abs(input, ABS_MT_PRESSURE, field, 0);