linux-kernel - Re: [PATCH] IIO: stm32: Remove quadrature related functions from trigger driver

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Message-ID: <20190508073434.GA3277@icarus>
Date:   Wed, 8 May 2019 16:34:34 +0900
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     Benjamin Gaignard <benjamin.gaignard@...aro.org>
Cc:     Benjamin Gaignard <benjamin.gaignard@...com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Alexandre Torgue <alexandre.torgue@...com>,
        linux-iio@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Hartmut Knaack <knaack.h@....de>,
        Fabrice Gasnier <fabrice.gasnier@...com>,
        linux-stm32@...md-mailman.stormreply.com,
        Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH] IIO: stm32: Remove quadrature related functions from
 trigger driver

On Tue, May 07, 2019 at 02:37:07PM +0200, Benjamin Gaignard wrote:
> Le mar. 7 mai 2019 à 12:19, William Breathitt Gray
> <vilhelm.gray@...il.com> a écrit :
> >
> > On Tue, May 07, 2019 at 11:12:24AM +0200, Benjamin Gaignard wrote:
> > > Quadrature feature is now hosted on it own framework.
> > > Remove quadrature related code from stm32-trigger driver to avoid
> > > code duplication and simplify the ABI.
> > >
> > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
> >
> > Although this functionality is now provided by the Counter subsystem, we
> > should keep the IIO Counter interface for this driver intact since
> > existing user applications may depend on it; this is the same reason why
> > the IIO Counter code in the 104-QUAD-8 device driver was not removed
> > despite moving to the Counter subsystem.
> >
> > Once user applications have had enough time to migrate to the Generic
> > Counter interface, we can consider removing the deprecated IIO Counter
> > interface.
> 
> Hi William,
> 
> This SoC is not yet in production so their is no legacy on the old interface
> and I would like to avoid to create one.
> 
> Benjamin

Ah, I see what you mean, this driver is for future devices. Do the
earlier STM32 H7 series devices have a quadrature feature as well, or is
this functionality only available with the new devices?

William Breathitt Gray

> 
> >
> > William Breathitt Gray
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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