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SubjectRe: [PATCH 2/2] touchscreen: goodix: define GPIO mapping for GPD P2 Max
On Fri, Aug 30, 2019 at 08:00:24AM +0800, Peter Cai wrote:
> The firmware of GPD P2 Max could not handle panel resets although code
> is present in DSDT. The kernel needs to take on this job instead, but
> the DSDT does not provide _DSD, rendering kernel helpless when trying to
> find the respective GPIO pins.
>
> Fortunately, this time GPD has proper DMI vendor / product strings that
> we could match against. We simply apply an acpi_gpio_mapping table when
> GPD P2 Max is matched.
>
> Additionally, the DSDT definition of the irq pin specifies a wrong
> polarity. The new quirk introduced in the previous patch
> (ACPI_GPIO_QUIRK_OVERRIDE_POLARITY) is applied to correct this.

> +#ifdef CONFIG_ACPI

I guess most of these #ifdef:s makes code less readable for exchange of saving
few bytes in the module footprint.

> + { "irq-gpios", &irq_gpios_default, 1,
> + ACPI_GPIO_QUIRK_OVERRIDE_POLARITY },

One line?

> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "GPD"),
> + DMI_MATCH(DMI_PRODUCT_NAME, "P2 MAX")

Comma at the end?

> + },
> + .driver_data = &gpio_mapping_force_irq_active_high

Ditto.

--
With Best Regards,
Andy Shevchenko


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