linux-kernel - Re: [PATCH v2] iio: addac: stx104: Migrate to the regmap API

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Date:   Sat, 1 Apr 2023 14:45:17 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     William Breathitt Gray <william.gray@...aro.org>
Cc:     Lars-Peter Clausen <lars@...afoo.de>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v2] iio: addac: stx104: Migrate to the regmap API

On Sun, 26 Mar 2023 17:13:18 -0400
William Breathitt Gray <william.gray@...aro.org> wrote:

> On Sun, Mar 26, 2023 at 04:49:20PM +0100, Jonathan Cameron wrote:
> > On Thu, 23 Mar 2023 23:09:16 -0400
> > William Breathitt Gray <william.gray@...aro.org> wrote:
> >   
> > > The regmap API supports IO port accessors so we can take advantage of
> > > regmap abstractions rather than handling access to the device registers
> > > directly in the driver.
> > > 
> > > Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> > > Signed-off-by: William Breathitt Gray <william.gray@...aro.org>  
> > 
> > I would have preferred slightly if you had avoided reording the probe
> > (previously gpio chip was registered before iio device and now it is after)
> > but it make no real difference so I'm not that bothered.
> > 
> > A few other minor comments. Biggest one being that the defines should be
> > prefixed.
> > 
> > Thanks,
> > 
> > Jonathan  
> 
> Hi Jonathan,
> 
> I'll be submitting a v3 soon addressing your comments as well as some
> minor fixes to v2; I'll make the regmap_read_poll_timeout() change as a
> follow-up patch as suggested.
> 
> Regarding the GPIO code reordering in the probe, I decided to move it
> after the iio device registration so that all the IIO-related code is
> grouped together and finished before we deal with GPIO-related stuff.
> Given that all the original gpio chip code is removed anyway in this
> patch, I figure this is a minor enough cleanup to perform here. If you
> aren't too strongly opposed to this change I'll keep it in v3 as it
> avoids the hassle of creating a separate patch for such a trivial
> change.
That's fine, just call it out in the patch description as a 
"While making these changes, also ..." or similar.

Jonathan

> 
> William Breathitt Gray