From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: jdelvare@suse.com, robh+dt@kernel.org, mark.rutland@arm.com,
afd@ti.com, linux-hwmon@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] hwmon: ina3221: Get channel names from DT node
Date: Fri, 21 Sep 2018 02:18:14 -0700 [thread overview]
Message-ID: <20180921091813.GA21564@Asurada-Nvidia.nvidia.com> (raw)
In-Reply-To: <20180921012038.GA23354@Asurada-Nvidia.nvidia.com>
Hi,
On Thu, Sep 20, 2018 at 06:20:38PM -0700, Nicolin Chen wrote:
> > So if there are no devicetree entries, the user now gets a sequence of
> > "unknown" sensors ? I don't think so. Please keep in mind that there are
> > users of this chip who don't have devicetree systems, and other users
> > may not want to specify any specific name properties (or they use sensors3.conf
> > to do it).
>
> Being enlightened by your comments below, maybe adding a
> separate group for channel names by attaching is_visible
> to it could be acceptable? Then, name nodes can hide from
> those who don't want to specify.
> > > + /* Log connected channels */
> > > + ina->attr_group[g++] = &ina3221_group[i];
> > > + ina->channel_name[i] = str;
> > > + ina->enable[i] = true;
> >
> > I also don't see the need for defining the group dynamically. The
> > is_visible callback is very well suited for handling optional sysfs
> > attributes.
I tried is_visible but it looks like it won't be that neat to
implement as some attributes of this driver don't really pass
the channel index to the store()/show() but some other indexes.
If you are very against the dynamical group, I can drop it to
leave the sysfs node as it was.
And for the name nodes that I was talking about above, I will
add an sysfs store() function so non-DT users can set them,
and I also removed the confusing "unknown" default name.
I have been rewriting the DT binding and it should make a lot
of sense now comparing to this version. Will send v2 tomrrow.
Thanks
Nicolin
next prev parent reply other threads:[~2018-09-21 9:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 0:07 [PATCH 0/2] Add an initial DT binding doc for ina3221 Nicolin Chen
2018-09-21 0:07 ` [PATCH 1/2] dt-bindings: hwmon: Add ina3221 documentation Nicolin Chen
2018-09-21 0:45 ` Guenter Roeck
2018-09-21 1:24 ` Nicolin Chen
2018-09-21 0:07 ` [PATCH 2/2] hwmon: ina3221: Get channel names from DT node Nicolin Chen
2018-09-21 0:41 ` Guenter Roeck
2018-09-21 1:20 ` Nicolin Chen
2018-09-21 9:18 ` Nicolin Chen [this message]
2018-09-21 12:56 ` Guenter Roeck
2018-09-21 17:43 ` Nicolin Chen
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