[PATCH v1 1/7] spmi: Implement spmi_subdevice_alloc_and_add() and devm variant

[Andy Shevchenko]

On Mon, Jul 21, 2025 at 09:55:19AM +0200, AngeloGioacchino Del Regno wrote:
> Some devices connected over the SPMI bus may be big, in the sense
> that those may be a complex of devices managed by a single chip
> over the SPMI bus, reachable through a single SID.
> 
> Add new functions aimed at managing sub-devices of a SPMI device
> spmi_subdevice_alloc_and_add() and a spmi_subdevice_put_and_remove()
> for adding a new subdevice and removing it respectively, and also
> add their devm_* variants.
> 
> The need for such functions comes from the existance of	those
> complex Power Management ICs (PMICs), which feature one or many
> sub-devices, in some cases with these being even addressable on
> the chip in form of SPMI register ranges.
> 
> Examples of those devices can be found in both Qualcomm platforms
> with their PMICs having PON, RTC, SDAM, GPIO controller, and other
> sub-devices, and in newer MediaTek platforms showing similar HW
> features and a similar layout with those also having many subdevs.

...

>  EXPORT_SYMBOL_GPL(devm_spmi_controller_add);

> +EXPORT_SYMBOL_GPL(devm_spmi_subdevice_alloc_and_add);

I am wondering how hard to move these to a dedicated namespace.
Basically you can define a default namespace, and at the same time
add import to all (current) users.

...

> +	dev_set_name(&sdev->dev,
> +		     "%d-%02x.%d.auto", sdev->ctrl->nr, sdev->usid, sub_sdev->devid);

No error check?

-- 
With Best Regards,
Andy Shevchenko