Re: [PATCH v2 0/6] Add support for software nodes to gpiolib

Andy Shevchenko
2022-11-09T11:29:51Z

On Tue, Nov 08, 2022 at 04:26:45PM -0800, Dmitry Torokhov wrote:
> This series attempts to add support for software nodes to gpiolib, using
> software node references. This allows us to convert more drivers to the
> generic device properties and drop support for custom platform data.
>
> To describe a GPIO via software nodes we can create the following data
> items:
>
> /* Node representing the GPIO controller/GPIO bank */
> static const struct software_node gpio_bank_b_node = {
> .name = "B",
> };
>
> /*
> * Properties that will be assigned to a software node assigned to
> * the device that used platform data.
> */
> static const struct property_entry simone_key_enter_props[] = {
> PROPERTY_ENTRY_U32("linux,code", KEY_ENTER),
> PROPERTY_ENTRY_STRING("label", "enter"),
> PROPERTY_ENTRY_REF("gpios", &gpio_bank_b_node, 123, GPIO_ACTIVE_LOW),
> { }
> };
>
> The code in gpiolib handling software nodes uses the name in the
> software node representing GPIO controller to locate the actual instance
> of GPIO controller.

Thank for an update!

I have almost nothing serious except two nit-picks I think we can address:
- dropping const qualifier for no (?) reason
- having a superfluous check and extra dev_dbg()

If you are are going to address them, feel free to add my Rb tag to
the patches 5 & 6.

--
With Best Regards,
Andy Shevchenko