Re: [PATCH v7 11/11] iio: adc: hx711: add support for HX710B

[Andy Shevchenko]

On Mon, May 11, 2026 at 01:56:55AM +0530, Piyush Patle wrote:
> Add support for the AVIA HX710B ADC, which shares the HX711 GPIO
> interface but uses trailing PD_SCK pulses to select the active mode.
> 
> Model the HX710B with variant-specific channel tables and IIO info,
> track the active channel across conversions, and use the fixed gain
> value when computing scale.
> 
> Also update the adjacent Kconfig text, file header, and module
> description so the driver text matches the newly supported variant.

...

>  #include <linux/slab.h>
>  #include <linux/sched.h>

>  #include <linux/delay.h>
> +#include <linux/types.h>

Seems wrong order.

And here + blank line to make linux/iio/* to be a separate group.

>  #include <linux/iio/iio.h>
>  #include <linux/iio/sysfs.h>
>  #include <linux/iio/buffer.h>

...

>  	/*
>  	 * triggered buffer
> -	 * 2x32-bit channel + 64-bit naturally aligned timestamp
> +	 * up to 3x32-bit channels + 64-bit naturally aligned timestamp
> +	 *
> +	 * aligned_s64 satisfies the 8-byte alignment requirement for the
> +	 * timestamp. For HX711 (at most 2 active channels), iio_push_to_
> +	 * buffers_with_timestamp() places the timestamp at offset 8
> +	 * (scan_bytes=8, already 8-byte aligned), identical to the original
> +	 * 2-channel layout. The extra channel slot for HX710B does not affect
> +	 * the HX711 ABI.
>  	 */
>  	struct {
> -		u32 channel[2];
> +		u32 channel[3];
>  		aligned_s64 timestamp;
>  	} buffer;

Why can't we used a recently introduced macro for this?
IIO_DECLARE_BUFFER_WITH_TS().

-- 
With Best Regards,
Andy Shevchenko