Re: [PATCH 06/15] twl4030_charger: split uA calculation into a function.

From: Pavel Machek
Date: Mon Mar 02 2015 - 16:05:31 EST


On Tue 2015-02-24 15:33:51, NeilBrown wrote:
> We will need this calculation in other places, so
> create functions to map between register value and uA value.
>
> Signed-off-by: NeilBrown <neilb@xxxxxxx>

Acked-by: Pavel Machek <pavel@xxxxxx>

> +static int regval2ua(int regval, bool cgain)
> +{
> + if (cgain)
> + return (regval * 16618 - 8500 * 1000) / 5;
> + else
> + return (regval * 16618 - 8500 * 1000) / 10;
> +}

int res = (regval * 16618 - 8500 * 1000);
if (cgain)
return res / 5;
return res / 10;

?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/