APPLIED [OEM-5.10] Re: [PATCH 0/1][SRU][F][G][H][OEM-5.10] Dell Precision 5550 takes up to 10 seconds to respond when coming out of sleep

[Timo Aaltonen]

On 15.3.2021 10.05, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1919123
> 
> [Impact]
> On some platforms, the EC doesn't support the register reading sequence
> for sentelic[1], and then make the EC can't respond commands for a while
> when probing. It leads to the keyboard is non-responsive for around 10
> seconds while waking up from s2idle.
> 
> [ 44.304488] i8042: [9804] d4 -> i8042 (command)
> [ 44.304634] i8042: [9804] f3 -> i8042 (parameter)
> [ 44.304787] i8042: [9804] fa <- i8042 (interrupt, 1, 12)
> [ 44.304855] i8042: [9804] d4 -> i8042 (command)
> [ 44.304938] i8042: [9804] 66 -> i8042 (parameter)
> [ 44.337698] i8042: [9813] d4 -> i8042 (command)
> [ 44.905695] i8042: [9942] 88 -> i8042 (parameter)
> [ 45.497478] i8042: [10102] d4 -> i8042 (command)
> [ 46.098041] i8042: [10253] f3 -> i8042 (parameter)
> [ 46.098070] i8042: [10253] fe <- i8042 (interrupt, 1, 12)
> [ 46.718154] i8042: [10386] d4 -> i8042 (command)
> [ 47.309915] i8042: [10386] f4 -> i8042 (parameter)
> [ 47.918961] i8042: [10556] d4 -> i8042 (command)
> [ 48.402624] i8042: [10556] f6 -> i8042 (parameter)
> 
> [Fix]
> A DMI quirk to mark this platform doesn't have aux device could avoid
> those commands to be sent. And the system could still using i2c
> interface to communicate with the touchpad.
> https://lkml.org/lkml/2021/3/15/126
> 
> [Test]
> Verified on Dell Precision 5550
> 
> [Where problem could occur]
> The quirk only affects the listed platform, there is no regression could occur.
> 
> Chia-Lin Kao (AceLan) (1):
>    UBUNTU: SAUCE: Input: i8042 - add dmi quirk
> 
>   drivers/input/serio/i8042.c | 21 +++++++++++++++++++++
>   1 file changed, 21 insertions(+)
> 

applied to oem-5.10, thanks

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