[PATCH] Initial driver for the MAX31785 intelligent fan controller

[Joel Stanley]

Hi Matt,

On Sat, Dec 10, 2016 at 2:55 AM, Matt Spinler
<mspinler at linux.vnet.ibm.com> wrote:
> Hi,
>
> We're getting closer to needing the hwmon driver for this.  Has anyone heard
> an outlook?

It's convention on mailing lists to bottom post. Particularly so when
others in the thread are using this style.

I have not heard any news about this driver.

Have you?

Cheers,

Joel

>
>
> On 9/23/2016 10:04 AM, Timothy Pearson wrote:
>>
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>> On 09/23/2016 02:41 AM, Joel Stanley wrote:
>>>
>>> Hello Timothy,
>>>
>>> On Tue, Sep 20, 2016 at 11:22 AM, Timothy Pearson
>>> <tpearson at raptorengineering.com> wrote:
>>>>
>>>> Add a basic driver for the MAX31785, focusing on the fan control
>>>> features but ignoring the temperature and voltage monitoring
>>>> features of the device.
>>>>
>>>> This driver supports all fan control modes and tachometer / PWM
>>>> readback where applicable.
>>>> This series adds a new hwmon driver for the MAX31875, which is
>>>> used for fan control on Firestone.
>>>>
>>>> This patch is a holdover until a PMBus driver is written at some
>>>> point.  Upstream has stated they will not accept unless a PMBus
>>>> driver is used for this particular device.
>>>
>>> I'm happy to carry this in our tree for now.
>>>
>>> Do you have a timeline for rewriting and submitting upstream?
>>
>> At this time upstream needs some significant work; the PMBus core driver
>> as it currently exists does not support the required functions.
>> However, the hwmon maintainer (Gunter Roeck) has said he will work on
>> extending the PMBus driver and might even get something working for this
>> chip with that core driver, so there is definitely progress being made.
>>   I wouldn't expect anything upstream until at least kernel 4.9 or later
>> though.
>>
>> - -- Timothy Pearson
>> Raptor Engineering
>> +1 (415) 727-8645 (direct line)
>> +1 (512) 690-0200 (switchboard)
>> https://www.raptorengineering.com
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