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hid: egalax: Report zero as minimum pressure

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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>
This commit is contained in:
Henrik Rydberg 2010-10-11 21:16:43 +02:00
parent b88cbd3a00
commit 80a469e4f4
1 changed files with 1 additions and 0 deletions
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drivers/hid/hid-egalax.c
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@ -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);