linux-kernel - Re: [PATCH v8 19/22] counter: Implement extension*

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Date:   Fri, 19 Feb 2021 17:51:37 +0900
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     kernel@...gutronix.de, linux-stm32@...md-mailman.stormreply.com,
        a.fatoum@...gutronix.de, kamel.bouhara@...tlin.com,
        gwendal@...omium.org, alexandre.belloni@...tlin.com,
        david@...hnology.com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        syednwaris@...il.com, patrick.havelange@...ensium.com,
        fabrice.gasnier@...com, mcoquelin.stm32@...il.com,
        alexandre.torgue@...com, o.rempel@...gutronix.de,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH v8 19/22] counter: Implement extension*_name sysfs
 attributes

On Sun, Feb 14, 2021 at 06:09:13PM +0000, Jonathan Cameron wrote:
> On Fri, 12 Feb 2021 21:13:43 +0900
> William Breathitt Gray <vilhelm.gray@...il.com> wrote:
> 
> > The Generic Counter chrdev interface expects users to supply extension
> > IDs in order to select extensions for requests. In order for users to
> > know what extension ID belongs to which extension this information must
> > be exposed. The extension*_name attribute provides a way for users to
> > discover what extension ID belongs to which extension by reading the
> > respective extension name for an extension ID.
> > 
> > Cc: David Lechner <david@...hnology.com>
> > Cc: Gwendal Grignou <gwendal@...omium.org>
> > Cc: Dan Carpenter <dan.carpenter@...cle.com>
> > Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
> > ---
> >  Documentation/ABI/testing/sysfs-bus-counter |  9 ++++
> >  drivers/counter/counter-sysfs.c             | 51 +++++++++++++++++----
> >  2 files changed, 50 insertions(+), 10 deletions(-)
> > 
> > diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter
> > index 6353f0a2f8f8..847e96f19d19 100644
> > --- a/Documentation/ABI/testing/sysfs-bus-counter
> > +++ b/Documentation/ABI/testing/sysfs-bus-counter
> > @@ -100,6 +100,15 @@ Description:
> >  		Read-only attribute that indicates whether excessive noise is
> >  		present at the channel Y counter inputs.
> >  
> > +What:		/sys/bus/counter/devices/counterX/countY/extensionZ_name
> > +What:		/sys/bus/counter/devices/counterX/extensionZ_name
> > +What:		/sys/bus/counter/devices/counterX/signalY/extensionZ_name
> > +KernelVersion:	5.13
> > +Contact:	linux-iio@...r.kernel.org
> > +Description:
> > +		Read-only attribute that indicates the component name of
> > +		Extension Z.
> 
> Good to say what form this takes.

Do you mean a description like this: "Read-only string attribute that
indicates the component name of Extension Z"?

William Breathitt Gray

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