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HID: wacom: Correct logical maximum Y for 2nd-gen Intuos Pro large 

commit d471b6b22d upstream.

The HID descriptor for the 2nd-gen Intuos Pro large (PTH-860) contains
a typo which defines an incorrect logical maximum Y value. This causes
a small portion of the bottom of the tablet to become unusable (both
because the area is below the "bottom" of the tablet and because
'wacom_wac_event' ignores out-of-range values). It also results in a
skewed aspect ratio.

To fix this, we add a quirk to 'wacom_usage_mapping' which overwrites
the data with the correct value.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
CC: stable@vger.kernel.org # v4.10+
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Jason Gerecke 2018-06-12 13:42:46 -07:00 committed by Greg Kroah-Hartman
parent ab17de60ce
commit d37c95f529
1 changed files with 8 additions and 0 deletions
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8
drivers/hid/wacom_sys.c
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@ -284,6 +284,14 @@ static void wacom_usage_mapping(struct hid_device *hdev,
}
}
/* 2nd-generation Intuos Pro Large has incorrect Y maximum */
if (hdev->vendor == USB_VENDOR_ID_WACOM &&
hdev->product == 0x0358 &&
WACOM_PEN_FIELD(field) &&
wacom_equivalent_usage(usage->hid) == HID_GD_Y) {
field->logical_maximum = 43200;
}
switch (usage->hid) {
case HID_GD_X:
features->x_max = field->logical_maximum;