Re: [PATCH v2 2/2] iio: light: max44009: Report the integration time via read_avail()

[Andy Shevchenko]

On Mon, Nov 09, 2026 at 02:07:38PM +0900, Arka Mondal wrote:
> The integration times the light channel accepts are listed by a custom
> attribute named illuminance_integration_time_available. That name has
> no in_ prefix, so it is registered at the device level instead of
> beside in_illuminance_integration_time, and userspace looking for
> in_illuminance_integration_time_available finds nothing.
> 
> Report the list through read_avail() and drop the custom attribute.

Will break it user space?

> All eight values are a whole number of microseconds, so they go in as
> IIO_VAL_INT_PLUS_MICRO pairs with nothing rounded. The values do not
> change; the core prints them with six decimals, so the attribute reads
> 0.800000 down to 0.006250 instead of 0.8 down to 0.00625. read_raw()
> still reports the time itself as IIO_VAL_INT_PLUS_NANO.

...

> +static const int max44009_int_time_avail[] = {
> +	0, 800000,
> +	0, 400000,
> +	0, 200000,
> +	0, 100000,
> +	0, 50000,
> +	0, 25000,
> +	0, 12500,
> +	0, 6250,
> +};

Make it 2d array.

-- 
With Best Regards,
Andy Shevchenko