Re: [RFC] iio: afe: rescale: Add support for converting scale avail table

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Hi Andy,

Le mar., juil. 12 2022 at 10:24:02 +0200, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> a écrit :
On Mon, Jul 11, 2022 at 9:46 PM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:

When the IIO channel has a scale_available attribute, we want the values
 contained to be properly converted the same way the scale value is.

Beside that not very readable `foo <<= x == y;` line, I think this
will look much better if we first convert the rescale driver to use
struct s32_fract (or whatever is suitable).

More like a s64_fract since IIO uses two ints + a type to represent how the value should be computed from the ints.

Is something like that already implemented somewhere in the kernel?

-Paul






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