Re: Fwd: Re: [PATCH v2] input: misc: Add driver for Intel Bay Trail GPIO buttons

From: Pavel Machek
Date: Tue Apr 15 2014 - 18:20:18 EST


Hi!
>
> Input: misc - Add driver for Intel Bay Trail GPIO buttons
>
> From: Lejun Zhu <lejun.zhu@xxxxxxxxxxxxxxx>
>
> This patch adds support for the GPIO buttons on some Intel Bay Trail
> tablets originally running Windows 8. The ACPI description of these
> buttons follows "Windows ACPI Design Guide for SoC Platforms".

Hmm. Is it time for x86 to adopt device tree? Because this is 200
lines of C code which should really have been 10 lines of .dts...

> +
> +/*
> + * Some of the buttons like volume up/down are auto repeat, while others
> + * are not. To support both, we register two platform devices, and put
> + * buttons into them based on whether the key should be auto repeat.
> + */
> +#define BUTTON_TYPES 2
> +
> +struct soc_button_data {
> + struct platform_device *children[BUTTON_TYPES];
> +};

Would it be possible to extend device description so that this hack is
not needed?
Pavel

--
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