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  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]
Date:   Thu, 2 Nov 2017 23:05:02 +0800
From:   Phil Reid <>
To:     Srinivas Pandruvada <>,
        Jonathan Cameron <>,
        Marc CAPDEVILLE <>
Cc:     Kevin Tsai <>,
        Jonathan Cameron <>,
        Peter Meerwald-Stadler <>,
        Wolfram Sang <>,
        Hartmut Knaack <>,
        Lars-Peter Clausen <>,,
Subject: Re: [PATCH v4] iio : Add cm3218 smbus ara and acpi support

On 2/11/2017 22:49, Srinivas Pandruvada wrote:
> On Thu, 2017-11-02 at 14:35 +0000, Jonathan Cameron wrote:
>> On Fri, 27 Oct 2017 18:27:02 +0200
>> Marc CAPDEVILLE <> wrote:
>>> On asus T100, Capella cm3218 chip is implemented as ambiant light
>>> sensor. This chip expose an smbus ARA protocol device on standard
>>> address 0x0c. The chip is not functional before all alerts are
>>> acknowledged.
>>> On asus T100, this device is enumerated on ACPI bus and the
>>> description give tow I2C connection. The first is the connection to
>>> the ARA device and the second gives the real address of the device.
>>> So, on device probe,If the i2c address is the ARA address and the
>>> device is enumerated via acpi, we lookup for the real address in
>>> the ACPI resource list and change it in the client structure.
>>> if an interrupt resource is given, and only for cm3218 chip,
>>> we declare an smbus_alert device.
>>> Signed-off-by: Marc CAPDEVILLE <>
>> Wolfram - this needs input from you on how to neatly handle
>> an ACPI registered ARA.
> There was another RFC from Alan cox

Wolfram just merged this from me:
[PATCH v11 00/10] Add sbs-manager with smbalert support

Cleans up the smbus_alert driver a bit.
note: alert_edge_triggered was removed.

And for OF systems core creates the ara device.

Phil Reid

Powered by blists - more mailing lists