kernel/linux.git/drivers/input/mouse/elantech.h, branch v6.19.11

Input: elantech - fix protocol errors for some trackpoints in SMBus mode

2020-12-11T08:15:05+00:00

There are some version of Elan trackpads that send incorrect data when in SMbus mode, unless they are switched to use 0x5f reports instead of standard 0x5e. This patch implements querying device to retrieve chips identifying data, and switching it, when needed to the alternative report. Signed-off-by: Jingle Wu Link: https://lore.kernel.org/r/20201211071531.32413-1-jingle.wu@emc.com.tw Signed-off-by: Dmitry Torokhov

Input: psmouse - drop all unneeded functions from mouse headers

2019-08-20T21:15:36+00:00

Recently we had a building error if we enable the MOUSE_PS2_ALPS while disable the MOUSE_PS2_TRACKPOINT, and was fixed by 49e6979e7e92 ("Input: psmouse - fix build error of multiple definition"). We could improve that fix by dropping all unneeded functions and CONFIG_MOUSE_ guards from the header, it is safe to do that since those functions are not directly called by psmouse-base.c anymore. Signed-off-by: Hui Wang Signed-off-by: Dmitry Torokhov

Merge tag 'v5.2' into next

2019-07-15T16:42:32+00:00

Sync up with mainline to resolve conflicts in iforce driver.

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

Input: elantech/SMBus - export all capabilities from the PS/2 node

2019-05-28T01:50:45+00:00

The recent touchpads might not have all the information regarding the characteristics through the I2C port. On some Lenovo t480s, this results in the touchpad not being detected as a clickpad, and on the Lenovo P52, this results in a failure while fetching the resolution through I2C. We need to imitate the Windows behavior: fetch the data under PS/2, and limit the querries under I2C. This patch prepares this by exporting the info from PS/2. Signed-off-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov

Input: elantech - detect middle button based on firmware version

2019-05-28T01:50:41+00:00

Looks like the new generation of Lenovo machine also need to be added to the PnPID whitelist. This is definitively not going to scale, as there is nothing that tells us currently if a touchpad supports a true physical middle button. Consider that all new touchpads that are not clickpads (so matching ETP_NEW_IC_SMBUS_HOST_NOTIFY) are handling 3 physical buttons. Signed-off-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov

Input: elantech - query the min/max information beforehand too

2019-05-28T01:50:39+00:00

For the latest generation of Elantech touchpads, we need to forward the min/max information from PS/2 to SMBus. Prepare this work by fetching the information before creating the SMBus companion device. Signed-off-by: Benjamin Tissoires 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