2022-08-18 19:49:55

by Andy Shevchenko

[permalink] [raw]
Subject: Re: [PATCH PoC 2/3] ACPI: platform: Refactor acpi_create_platform_device()

On Tue, Aug 16, 2022 at 2:33 PM John Garry <[email protected]> wrote:
>
> There is commonality between acpi_create_platform_device() and
> hisi_lpc_acpi_add_child(), in that it covers 2x main steps:
> - Read resources for the acpi_device
> - Create platform device
>
> Refactor acpi_create_platform_device() so that it may be reused by
> hisi_lpc_acpi_add_child() to reduce duplication.

...

> + * acpi_create_platform_device_ops - Create platform device for ACPI device node

Not sure I understand why _ops is a suffix for the function. I would
expect _ops to be a data struct where the ->xlate() and perhaps other
callbacks may be collected. It may be that I have missed that portion
in the previous discussion.

...

> + if (name)
> + pdevinfo.name = name;
> + else
> + pdevinfo.name = dev_name(&adev->dev);

> + pdevinfo.data = data;
> + pdevinfo.size_data = size_data;

It rather reminds me of platform device registration full with this
device info. May be what you need is
struct acpi_platfrom_device_info {
properties;
name;
id;
->xlate();
...
};

?

...

> +struct platform_device *acpi_create_platform_device_ops(
> + struct acpi_device *adev,
> + const char *name,
> + const struct property_entry *properties,
> + void *data, size_t size_data,
> + int (*xlat)(struct acpi_device *adev,
> + struct resource *res,
> + void *data, size_t size_data),
> + int id);

...because this looks a bit too much from the amount of parameters
point of view.

--
With Best Regards,
Andy Shevchenko