linux-toradex.git/drivers/input/mouse/elantech.c, branch v4.19

Input: elantech - enable middle button of touchpad on ThinkPad P72

2018-09-18T22:28:07+00:00

Adding 2 new touchpad IDs to support middle button support.

Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma 
Signed-off-by: Dmitry Torokhov

Merge branch 'next' into for-linus

2018-08-16T18:10:56+00:00

Prepare input updates for 4.19 merge window.

Input: mark expected switch fall-throughs

2018-08-08T18:23:27+00:00

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Warning level 2 was used: -Wimplicit-fallthrough=2

Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: Dmitry Torokhov

Input: elantech - fix V4 report decoding for module with middle key

2018-06-22T00:20:11+00:00

Some touchpad has middle key and it will be indicated in bit 2 of packet[0].
We need to fix V4 formation's byte mask to prevent error decoding.

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

Input: elantech - enable middle button of touchpads on ThinkPad P52

2018-06-22T00:19:56+00:00

PNPID is better way to identify the type of touchpads.
Enable middle button support on 2 types of touchpads on Lenovo P52.

Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Dmitry Torokhov

Input: psmouse-smbus - allow to control psmouse_deactivate

2018-05-23T23:49:22+00:00

This seems to be Synaptics specific, as some Elan touchpads are not
correctly switching to SMBus if we call deactivate before switching to
SMBus on cold boot and on resume.

Tested with the T480s

Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov

Input: elantech - detect new ICs and setup Host Notify for them

2018-05-23T23:49:22+00:00

New ICs are using a different scheme for the alternate bus parameter.
Given that they are new and are only using either PS2 only or PS2 + SMBus
Host Notify, we force those new ICs to use the SMBus solution for enhanced
reporting.

This allows the touchpad found on the Lenovo T480s to report 5 fingers
every 8 ms, instead of having a limit of 2 every 8 ms.

Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov

Input: elantech - add support for SMBus devices

2018-05-23T23:49:22+00:00

Many of the Elantech devices are connected through PS/2 and a different
bus (SMBus or plain I2C).

To not break any existing device, we only enable SMBus based
on a module parameter. If some laptops require the quirk to
be set, we will have to rely on a list of PNPIds or MDI matching
to individually expose those hardware over SMBus.
the parameter mentioned above is elantech_smbus from the psmouse
module.

Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov

Input: elantech - query the resolution in query_info

2018-05-23T23:49:22+00:00

The command ETP_RESOLUTION_QUERY also contains the bus information.
It is better to fetch it once, while we are querying for device
information.

Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov

Input: elantech - split device info into a separate structure

2018-05-23T23:48:49+00:00

In preparation for SMBus device support, move static device
information that we query form the touchpad upon initialization into
separate structure. This will allow us to query the device without
allocating memory first.

Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov