linux-kernel - Re: [PATCH v2] meson saradc: add iio device attrib to switch channel 7 mux

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Message-ID: <ZHMzGHsGEylDdgg7@smile.fi.intel.com>
Date:   Sun, 28 May 2023 13:55:20 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     George Stark <gnstark@...rdevices.ru>
Cc:     jic23@...nel.org, lars@...afoo.de, neil.armstrong@...aro.org,
        khilman@...libre.com, jbrunet@...libre.com,
        martin.blumenstingl@...glemail.com, nuno.sa@...log.com,
        linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        kernel@...rdevices.ru
Subject: Re: [PATCH v2] meson saradc: add iio device attrib to switch channel
 7 mux

On Sun, May 28, 2023 at 01:46:37PM +0300, Andy Shevchenko wrote:
> On Sun, May 28, 2023 at 12:48:54AM +0300, George Stark wrote:

...

> > +static const char * const chan7_vol[] = {
> > +	"gnd",
> > +	"vdd/4",
> > +	"vdd/2",
> > +	"vdd*3/4",
> > +	"vdd",
> > +	"ch7_input",
> > +};

One more thing to discuss (Jonathan, what's your opinion?) I think the
following easier to understand and has less problematic characters in the names
(in case of sysfs direct use from shelll):

static const char * const chan7_vol[] = {
	"gnd", // alternatively GND
	"0.25vdd", // alternatively 0.25_vdd, 0.25Vdd, 0.25_Vdd
	"0.5vdd",
	"0.75vdd",
	"vdd", // Vdd
	"ch7_input",
};

That said, my personal preference:

static const char * const chan7_vol[] = {
	"GND",
	"0.25Vdd",
	"0.5Vdd",
	"0.75Vdd",
	"Vdd",
	"ch7_input",
};

-- 
With Best Regards,
Andy Shevchenko