linux.git/drivers/hid/hid-multitouch.c, branch v5.17

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

HID: multitouch: Disable event reporting on suspend on the Asus T101HA touchpad

2021-05-27T13:40:34+00:00

The Asus T101HA has a problem with spurious wakeups when the lid is
closed, this is caused by the screen sitting so close to the touchpad
that the touchpad ends up reporting touch events, causing these wakeups.

Add a quirk which disables event reporting on suspend when set, and
enable this quirk for the Asus T101HA touchpad fixing the spurious
wakeups, while still allowing the device to be woken by pressing a
key on the keyboard (which is part of the same USB device).

Signed-off-by: Hans de Goede 
Signed-off-by: Jiri Kosina

HID: multitouch: set Stylus suffix for Stylus-application devices, too

2021-05-05T13:06:44+00:00

This re-adds the suffix to Win8 stylus-on-touchscreen devices,
now that they aren't erroneously marked as MT

Signed-off-by: Ahelenia Ziemiańska 
Signed-off-by: Jiri Kosina

HID: multitouch: require Finger field to mark Win8 reports as MT

2021-05-05T13:05:05+00:00

This effectively changes collection_is_mt from
  contact ID in report->field
to
  (device is Win8 => collection is finger) && contact ID in report->field

Some devices erroneously report Pen for fingers, and Win8 stylus-on-touchscreen
devices report contact ID, but mark the accompanying touchscreen device's
collection correctly

Cc: stable@vger.kernel.org
Signed-off-by: Ahelenia Ziemiańska 
Acked-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

Merge branch 'for-5.12/multitouch' into for-linus

2021-02-23T10:36:19+00:00

- hid-multitouch devices should be put into high-latency mode when
  suspended in order to be in line with Windows Precision Touchpad
  guidelines. From Blaž Hrastnik.

HID: multitouch: Set to high latency mode on suspend.

2021-01-26T10:09:06+00:00

Per Windows Precision Touchpad guidelines:

> The latency mode feature report is sent by the host to a Windows
> Precision Touchpad to indicate when high latency is desirable for
> power savings and, conversely, when normal latency is desired for
> operation.
>
> For USB-connected Windows Precision Touchpads, this enables the device
> to disambiguate between being suspended for inactivity (runtime IDLE)
> and being suspended because the system is entering S3 or Connected
> Standby.

The current implementation would set the latency to normal on device initialization,
but we didn't set the device to high latency on suspend.

Signed-off-by: Blaž Hrastnik 
Acked-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: multitouch: Apply MT_QUIRK_CONFIDENCE quirk for multi-input devices

2021-01-25T08:34:15+00:00

Palm ejection stops working on some Elan and Synaptics touchpad after
commit 40d5bb87377a ("HID: multitouch: enable multi-input as a quirk for
some devices").

The commit changes the mt_class from MT_CLS_WIN_8 to
MT_CLS_WIN_8_FORCE_MULTI_INPUT, so MT_QUIRK_CONFIDENCE isn't applied
anymore.

So also apply the quirk since MT_CLS_WIN_8_FORCE_MULTI_INPUT is
essentially MT_CLS_WIN_8.

Fixes: 40d5bb87377a ("HID: multitouch: enable multi-input as a quirk for some devices")
Cc: stable@vger.kernel.org
Signed-off-by: Kai-Heng Feng 
Signed-off-by: Benjamin Tissoires