linux-toradex.git/drivers/hid/hid-multitouch.c, branch v6.5

HID: multitouch: Add quirks for flipped axes

2023-01-18T09:08:51+00:00

Certain touchscreen devices, such as the ELAN9034, are oriented
incorrectly and report touches on opposite points on the X and Y axes.
For example, a 100x200 screen touched at (10,20) would report (90, 180)
and vice versa.

This is fixed by adding device quirks to transform the touch points
into the correct spaces, from X -> MAX(X) - X, and Y -> MAX(Y) - Y.

Signed-off-by: Allen Ballway 
Signed-off-by: Jiri Kosina

HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint

2022-12-20T14:34:16+00:00

The HID descriptor of this device contains two mouse collections, one
for mouse emulation and the other for the trackpoint.

Both collections get merged and, because the first one defines X and Y,
the movemenent events reported by the trackpoint collection are
ignored.

Set the MT_CLS_WIN_8_FORCE_MULTI_INPUT class for this device to be able
to receive its reports.

This fix is similar to/based on commit 40d5bb87377a ("HID: multitouch:
enable multi-input as a quirk for some devices").

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/825
Reported-by: Akito 
Tested-by: Akito 
Signed-off-by: José Expósito 
Signed-off-by: Jiri Kosina

HID: multitouch: Add memory barriers

2022-09-20T11:13:40+00:00

This fixes broken atomic checks which cause a race between the
release-timer and processing of hid input.

I noticed that contacts were sometimes sticking, even with the "sticky
fingers" quirk enabled. This fixes that problem.

Cc: stable@vger.kernel.org
Fixes: 9609827458c3 ("HID: multitouch: optimize the sticky fingers timer")
Signed-off-by: Andri Yngvason 
Signed-off-by: Benjamin Tissoires 
Link: https://lore.kernel.org/r/20220907150159.2285460-1-andri@yngvason.is

HID: multitouch: new device class fix Lenovo X12 trackpad sticky

2022-06-09T09:13:08+00:00

The trackpad of the given device sends continuous report of pointers
status as per wxn8 spec. However, the spec did not clarify when the
fingers are lifted so fast that between the interval of two report
frames fingers on pad reduced from >=2 to 0. The second last report
contains >=2 fingers with tip state 1 and the last report contains only
1 finger with tip state 0. Although this can happen unfrequently, a
  quick fix will be improve the consistency to 100%. A quick fix is to
disable MT_QUIRK_ALWAYS_VALID and enable MT_QUIRK_NOT_SEEN_MEANS_UP.

Test for hid-tools is added in [1]

In addition to this, I2C device 04CA:00B1 may also need similar class
but with MT_QUIRK_FORCE_MULTI_INPUT disabled (but it does not harm to
 enable it on non-multi-input device either). The respective owner has
been notified and a patch may coming soon after test.

[1]: https://gitlab.freedesktop.org/libevdev/hid-tools/-/merge_requests/130

Signed-off-by: Tao Jin 
Signed-off-by: Jiri Kosina

HID: multitouch: Add support for Google Whiskers Touchpad

2022-04-21T08:24:35+00:00

The Google Whiskers touchpad does not work properly with the default
multitouch configuration. Instead, use the same configuration as Google
Rose.

Signed-off-by: Marek Maslanka 
Acked-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: multitouch: add quirks to enable Lenovo X12 trackpoint

2022-04-04T09:34:19+00:00

This applies the similar quirks used by previous generation devices
such as X1 tablet for X12 tablet, so that the trackpoint and buttons
can work.

This patch was applied and tested working on 5.17.1 .

Cc: stable@vger.kernel.org # 5.8+ given that it relies on 40d5bb87377a
Signed-off-by: Tao Jin 
Signed-off-by: Benjamin Tissoires 
Link: https://lore.kernel.org/r/CO6PR03MB6241CB276FCDC7F4CEDC34F6E1E29@CO6PR03MB6241.namprd03.prod.outlook.com

HID: hid-input: Add suffix also for HID_DG_PEN

2021-12-14T09:08:40+00:00

This and HID_DG_STYLUS are pretty much the same thing so add suffix for
HID_DG_PEN too. This makes the input device name look better.

While doing this, remove the suffix override from hid-multitouch, as it
is now handled by hid-input. Also, the suffix override done by
hid-multitouch was wrong, as it mapped HID_DG_PEN => "Stylus" and
HID_DG_STYLUS => "Pen".

Signed-off-by: Mika Westerberg 
Signed-off-by: Tero Kristo 
[bentiss: amended to keep the same name for hid-multitouch devices]
Signed-off-by: Benjamin Tissoires 
Link: https://lore.kernel.org/r/20211210111138.1248187-3-tero.kristo@linux.intel.com

HID: multitouch: Fix Iiyama ProLite T1931SAW (0eef:0001 again!)

2021-11-19T15:00:21+00:00

Iiyama ProLite T1931SAW does not work with Linux - input devices are
created but cursor does not move.

It has the infamous 0eef:0001 ID which has been reused for various
devices before.

It seems to require export_all_inputs = true.

Hopefully there are no HID devices using this ID that will break.
It should not break non-HID devices (handled by usbtouchscreen).

Signed-off-by: Ondrej Zary 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: multitouch: disable sticky fingers for UPERFECT Y

2021-10-07T12:05:30+00:00

When a finger is on the screen, the UPERFECT Y portable touchscreen
monitor reports a contact in the first place. However, after this
initial report, contacts are not reported at the refresh rate of the
screen as required by the Windows 8 specs.

This behaviour triggers the release_timer, removing the fingers even
though they are still present.

To avoid it, add a new class, similar to MT_CLS_WIN_8 but without the
MT_QUIRK_STICKY_FINGERS quirk for this device.

Suggested-by: Benjamin Tissoires 
Signed-off-by: José Expósito 
Signed-off-by: Jiri Kosina

HID: multitouch: Disable event reporting on suspend when the device is not a wakeup-source

2021-06-25T12:02:59+00:00

Disable event reporting on suspend when the hid device is not
a wakeup-source. This should help save some extra power in this case.

Signed-off-by: Hans de Goede 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina