linux-kernel - Re: [PATCH v4 4/4] iio: adc: mcp3911: add support for the whole MCP39xx family

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Date:   Thu, 10 Aug 2023 16:31:42 +0200
From:   Marcus Folkesson <marcus.folkesson@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Kent Gustavsson <kent@...oris.se>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Cosmin Tanislav <demonsingur@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        ChiYuan Huang <cy_huang@...htek.com>,
        Haibo Chen <haibo.chen@....com>,
        Ramona Bolboaca <ramona.bolboaca@...log.com>,
        Ibrahim Tilki <Ibrahim.Tilki@...log.com>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        William Breathitt Gray <william.gray@...aro.org>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/4] iio: adc: mcp3911: add support for the whole
 MCP39xx family

On Thu, Aug 10, 2023 at 04:44:20PM +0300, Andy Shevchenko wrote:
> On Wed, Aug 09, 2023 at 08:14:54PM +0200, Krzysztof Kozlowski wrote:
> > On 09/08/2023 20:02, Jonathan Cameron wrote:
> > > On Wed, 9 Aug 2023 08:41:05 +0200
> > > Marcus Folkesson <marcus.folkesson@...il.com> wrote:
> 
> ...
> 
> > >>> Inconsistent macro implementation, i.e. you need to use (x).
> > >>
> > >> Sorry, I do not get you
> 
> In other macros you avoid ambiguity of the parameter, so they can be evaluated
> properly, and not here.


Hrmf, I missed that I had asked about this before I sent out v5. Such a shame.

I got you now, thanks.

I agree that maybe it should be 'ch' instead.
Already existing macros for channel and offcal use 'x' though, so in
that case should be changed as well.

#define MCP3911_CHANNEL(x)		(MCP3911_REG_CHANNEL0 + x * 3)
#define MCP3911_OFFCAL(x)		(MCP3911_REG_OFFCAL_CH0 + x * 6)

[...]

> 
> See (1) above ?
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

Best regards,
Marcus Folkesson

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