Re: [PATCH v3 2/3] iio: adc: hx711: refactor to per-chip hx711_chip_info structure

[Andy Shevchenko]

On Wed, Apr 22, 2026 at 11:29:09PM +0530, Piyush Patle wrote:

...

>  config HX711
> -	tristate "AVIA HX711 ADC for weight cells"
> +	tristate "AVIA HX711 and compatible ADCs"
>  	depends on GPIOLIB
>  	select IIO_BUFFER
>  	select IIO_TRIGGERED_BUFFER
>  	help
> -	  If you say yes here you get support for AVIA HX711 ADC which is used
> -	  for weigh cells
> +	  If you say Y here you get support for the following AVIA ADCs:
> +	    - HX711
> +	  which are used for bridge sensors such as weigh cells.
>  
>  	  This driver uses two GPIOs, one acts as the clock and controls the
>  	  channel selection and gain, the other one is used for the measurement

This along with top comment and other text doesn't belong to the change, please
split into separate patch.

> +/**
> + * struct hx711_chip_info - per-variant static configuration
> + * @name: IIO device name
> + * @channels: channel specification
> + * @num_channels: number of channels
> + * @iio_info: IIO info ops for this variant
> + */
> +struct hx711_chip_info {
> +	const char			*name;
> +	const struct iio_chan_spec	*channels;
> +	unsigned int			num_channels;
> +	const struct iio_info		*iio_info;
> +};


...

>  	/*
> -	 * delay after a rising edge on SCK until the data is ready DOUT
> -	 * this is dependent on the hx711 where the datasheet tells a
> -	 * maximum value of 100 ns
> -	 * but also on potential parasitic capacities on the wiring
> +	 * Delay after SCK rising edge before sampling DOUT.
>  	 */

Doesn't seem like a part of this change.

...

> -	for (i = 0; i < 24; i++) {
> +	for (int i = 0; i < 24; i++) {

Be consistent. Why here is 'i' signed?

In any case doesn't belong to this change.

...

> -			ret = hx711_read(hx711_data);
> +			ret = hx711_read(hx711_data,
> +					 hx711_get_gain_to_pulse(hx711_data->gain_set));

This sounds like a separate change to me.

...

> -MODULE_DESCRIPTION("HX711 bitbanging driver - ADC for weight cells");
> +MODULE_DESCRIPTION("HX711 and compatible bitbanging ADC driver");

Doesn't belong to this change.

...

This needs to be split to 3 or even more patches!
- text in the MODULE_*(), top comments, and Kconfig
- chip_info initial change

- modifying  the existing code to prepare for new HW support
(the above  ^^^ might be done in a couple of patches)

-- 
With Best Regards,
Andy Shevchenko