linux-kernel - Re: [PATCH v3 0/6] iio: st_sensors: Add lsm303d support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <fef45f01-81ee-c973-3d4f-86d537df98b6@redhat.com>
Date:   Fri, 21 Apr 2023 09:55:22 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Marius Hoch <mail@...iushoch.de>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Denis Ciocca <denis.ciocca@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/6] iio: st_sensors: Add lsm303d support

Hi Marius,

On 4/16/23 22:19, Hans de Goede wrote:

<snip>

> 2: There are some other unsupported sensors on these models too,
> perhaps you are interested in adding support for these too?
> 
> Here are my personal notes on this:
>  -Light sensor should work with drivers/iio/light/al3320a.c
>   https://github.com/JideTechnology/remixos-kernel/commit/c52d55b4bd907e87b7b115b3943219f3e089a77a
> 
>  -MXM1120 HALL sensor, have datasheet, measures angle of kickstand thingie, use
>   for SW_TABLET_MODE. Do a pdx86 driver just for the Tab 2 which checks that the
>   kick stand is out *and* the BT keyboard is paired, in that case report
>   SW_TABLET_MODE=0, in all other cases report SW_TABLET_MODE=1 ??
>   For the commit msg:
>   Datasheet available here: http://haechitech.com/tech-support/
>   Requires creating an account, once you have an account you can immediately download
>   the provided datasheets (or let me know if you want me to email you a copy)

A quick follow up on this, since you said you were going to take a look.

I think with the way bluetooth works under Linux, with a bunch of the work
being done in userspace that figuring out if the BT keyboard is paired is
not going to work in kernelspace. So I think the best we can do here is
simply export the angle of the kickstand as an iio angle sensor.

Regards,

Hans