From: Phil Reid <preid@electromag.com.au>
To: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Marc CAPDEVILLE <m.capdeville@no-log.org>
Cc: Kevin Tsai <ktsai@capellamicro.com>,
Jonathan Cameron <jic23@kernel.org>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Wolfram Sang <wsa@the-dreams.de>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4] iio : Add cm3218 smbus ara and acpi support
Date: Thu, 2 Nov 2017 23:05:02 +0800 [thread overview]
Message-ID: <76773afb-8428-645f-2cf7-98bd7dd3a21c@electromag.com.au> (raw)
In-Reply-To: <1509634178.782.5.camel@linux.intel.com>
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 <m.capdeville@no-log.org> 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 <m.capdeville@no-log.org>
>> Wolfram - this needs input from you on how to neatly handle
>> an ACPI registered ARA.
> There was another RFC from Alan cox
> https://patchwork.ozlabs.org/patch/381773/
>
Wolfram just merged this from me:
[PATCH v11 00/10] Add sbs-manager with smbalert support
https://www.spinics.net/lists/devicetree/msg191947.html
Cleans up the smbus_alert driver a bit.
note: alert_edge_triggered was removed.
And for OF systems core creates the ara device.
--
Regards
Phil Reid
next prev parent reply other threads:[~2017-11-02 15:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 16:27 [PATCH v4] iio : Add cm3218 smbus ara and acpi support Marc CAPDEVILLE
2017-10-27 17:57 ` Peter Meerwald-Stadler
2017-11-02 14:35 ` Jonathan Cameron
2017-11-02 14:49 ` Srinivas Pandruvada
2017-11-02 15:05 ` Phil Reid [this message]
2017-11-02 15:04 ` Wolfram Sang
2017-11-19 16:35 ` Jonathan Cameron
2017-11-20 10:57 ` Mika Westerberg
2017-11-21 1:22 ` Phil Reid
2017-11-25 13:57 ` Jonathan Cameron
2017-11-27 2:55 ` Phil Reid
2017-11-25 14:00 ` Jonathan Cameron
2017-11-27 11:35 ` Mika Westerberg
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