Public bug reported:
[Impact]
Dell machines which uses goodix touchpad IC emit double click event
while touching the touchpad if designware i2c adapter is in runtime
suspend.
Goodix re-assert the interrupt if host doesn't read the data within
100ms and designware takes a longer time to wake up from runtime
suspend. In the case, it got a second interrupt during resuming, so
it thinks it's a double click.
[Fix]
There is no simple way to fix this, it's a firmware issue and goodix
agrees to fix this in their firmware on next release, but this issue is
still affects the machines that don't come with an updated firmware. So,
add a quirk to mark those machines and avoid the designware from entering
runtime suspend.
[Regression Potential]
Low, it only affects the listed machines, and prevent designware from
entering runtime suspend impacts the power consumption little or none
during short or long idle.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Tags: oem-priority originate-from-1828952 somerville
** Patch added: "0001-i2c-designware-Add-disable-runtime-pm-quirk.patch"
https://bugs.launchpad.net/bugs/1833484/+attachment/5271661/+files/0001-i2c-designware-Add-disable-runtime-pm-quirk.patch
** Tags added: oem-priority originate-from-1828952 somerville
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https://bugs.launchpad.net/bugs/1833484
Title:
Sometimes touchpad automatically trigger double click
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