linux-kernel - Re: [Regression]: Commit 74d905d2 breaks the touchpad and touchscreen of Google Chromebook "samus"

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Date:   Thu, 5 Nov 2020 22:25:59 +0900
From:   "Wang, Jiada" <jiada_wang@...tor.com>
To:     Andre <andre.muller@....de>, Nick Dyer <nick.dyer@...ev.co.uk>
CC:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "George G. Davis" <george_davis@...tor.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [Regression]: Commit 74d905d2 breaks the touchpad and touchscreen
 of Google Chromebook "samus"

Hi Andre

Thanks for your report,
could you also please post the log when with this commit reverted?

Thanks,
Jiada

On 2020/11/04 17:13, Andre wrote:
> Hi,
> 
> commit 74d905d2: Input: atmel_mxt_ts - only read messages in
> mxt_acquire_irq() when necessary
> 
> breaks the touchpad and touchscreen of the 2015 Chromebook Pixel "Samus".
> 
> Reverting the commit from the current git tree gets them to work again.
> 
> I am not at all shure what info to include, but I will happily provide
> it on request.
> 
> The dmesgs of a boot with commit 74d905d2 show "Enabling RETRIGEN
> workaround", but otherwise looks the same as a boot without.
> 
> Here is the relevant bit (with 74d905d2):
> 
> atmel_mxt_ts i2c-ATML0000:01: Family: 164 Variant: 17 Firmware V1.0.AA
> Objects: 32
> atmel_mxt_ts i2c-ATML0000:01: Enabling RETRIGEN workaround
> atmel_mxt_ts i2c-ATML0000:01: Direct firmware load for maxtouch.cfg
> failed with error -2
> atmel_mxt_ts i2c-ATML0000:01: Touchscreen size X960Y540
> input: Atmel maXTouch Touchpad as
> /devices/pci0000:00/INT3432:00/i2c-0/i2c-ATML0000:01/input/input4
> atmel_mxt_ts i2c-ATML0001:01: Family: 164 Variant: 13 Firmware V1.0.AA
> Objects: 41
> atmel_mxt_ts i2c-ATML0001:01: Enabling RETRIGEN workaround
> atmel_mxt_ts i2c-ATML0001:01: Direct firmware load for maxtouch.cfg
> failed with error -2
> 
> Thank you,
> Andre Müller