linux-stable.git/drivers/input/mouse, branch v4.14.136

Input: alps - fix a mismatch between a condition check and its comment

2019-07-31T05:28:36+00:00

commit 771a081e44a9baa1991ef011cc453ef425591740 upstream.

In the function alps_is_cs19_trackpoint(), we check if the param[1] is
in the 0x20~0x2f range, but the code we wrote for this checking is not
correct:
(param[1] & 0x20) does not mean param[1] is in the range of 0x20~0x2f,
it also means the param[1] is in the range of 0x30~0x3f, 0x60~0x6f...

Now fix it with a new condition checking ((param[1] & 0xf0) == 0x20).

Fixes: 7e4935ccc323 ("Input: alps - don't handle ALPS cs19 trackpoint-only device")
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: synaptics - whitelist Lenovo T580 SMBus intertouch

2019-07-31T05:28:36+00:00

commit 1976d7d200c5a32e72293a2ada36b7b7c9d6dd6e upstream.

Adds the Lenovo T580 to the SMBus intertouch list for Synaptics
touchpads. I've tested with this for a week now, and it seems a great
improvement. It's also nice to have the complaint gone from dmesg.

Signed-off-by: Nick Black 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: alps - don't handle ALPS cs19 trackpoint-only device

2019-07-31T05:28:36+00:00

commit 7e4935ccc3236751e5fe4bd6846f86e46bb2e427 upstream.

On a latest Lenovo laptop, the trackpoint and 3 buttons below it
don't work at all, when we move the trackpoint or press those 3
buttons, the kernel will print out:
"Rejected trackstick packet from non DualPoint device"

This device is identified as an alps touchpad but the packet has
trackpoint format, so the alps.c drops the packet and prints out
the message above.

According to XiaoXiao's explanation, this device is named cs19 and
is trackpoint-only device, its firmware is only for trackpoint, it
is independent of touchpad and is a device completely different from
DualPoint ones.

To drive this device with mininal changes to the existing driver, we
just let the alps driver not handle this device, then the trackpoint.c
will be the driver of this device if the trackpoint driver is enabled.
(if not, this device will fallback to a bare PS/2 device)

With the trackpoint.c, this trackpoint and 3 buttons all work well,
they have all features that the trackpoint should have, like
scrolling-screen, drag-and-drop and frame-selection.

Signed-off-by: XiaoXiao Liu 
Signed-off-by: Hui Wang 
Reviewed-by: Pali Rohár 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elantech - enable middle button support on 2 ThinkPads

2019-07-21T07:04:17+00:00

[ Upstream commit aa440de3058a3ef530851f9ef373fbb5f694dbc3 ]

Adding 2 new touchpad PNPIDs to enable middle button support.

Signed-off-by: Aaron Ma 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: synaptics - enable SMBUS on T480 thinkpad trackpad

2019-07-21T07:04:16+00:00

commit abbe3acd7d72ab4633ade6bd24e8306b67e0add3 upstream.

Thinkpad t480 laptops had some touchpad features disabled, resulting in the
loss of pinch to activities in GNOME, on wayland, and other touch gestures
being slower. This patch adds the touchpad of the t480 to the smbus_pnp_ids
whitelist to enable the extra features. In my testing this does not break
suspend (on fedora, with wayland, and GNOME, using the rc-6 kernel), while
also fixing the feature on a T480.

Signed-off-by: Cole Rogers 
Acked-by: Benjamin Tissoires 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: synaptics - enable SMBus on ThinkPad E480 and E580

2019-06-25T03:36:51+00:00

commit 9843f3e08e2144724be7148e08d77a195dea257a upstream.

They are capable of using intertouch and it works well with
psmouse.synaptics_intertouch=1, so add them to the list.

Without it, scrolling and gestures are jumpy, three-finger pinch gesture
doesn't work and three- or four-finger swipes sometimes get stuck.

Signed-off-by: Alexander Mikhaylenko 
Reviewed-by: Benjamin Tissoires 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c - add hardware ID for multiple Lenovo laptops

2019-05-16T17:42:30+00:00

[ Upstream commit 738c06d0e4562e0acf9f2c7438a22b2d5afc67aa ]

There are many Lenovo laptops which need elan_i2c support, this patch adds
relevant IDs to the Elan driver so that touchpads are recognized.

Signed-off-by: KT Liao 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: elan_i2c - add id for touchpad found in Lenovo s21e-20

2019-03-13T21:03:22+00:00

commit e154ab69321ce2c54f19863d75c77b4e2dc9d365 upstream.

Lenovo s21e-20 uses ELAN0601 in its ACPI tables for the Elan touchpad.

Signed-off-by: Vincent Batts 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780

2019-02-20T09:20:53+00:00

commit e8b22d0a329f0fb5c7ef95406872d268f01ee3b1 upstream.

Like Fujitsu CELSIUS H760, the H780 also has a three-button Elantech
touchpad, but the driver needs to be told so to enable the middle touchpad
button.

The elantech_dmi_force_crc_enabled quirk was not necessary with the H780.

Also document the fw_version and caps values detected for both H760 and
H780 models.

Signed-off-by: Matti Kurkela 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK

2019-02-20T09:20:51+00:00

commit 7ad222b3aed350adfc27ee7eec4587ffe55dfdce upstream.

This adds ELAN0617 to the ACPI table to support Elan touchpad found in
Lenovo V330-15ISK.

Signed-off-by: Mauro Ciancio 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman