Why are three resources in gta01_button_resources array?

[Ben Wilson]

There's a 3rd button inside the headphone jack to detect when you put 
the plug in.
It's used to know when to mute the built in speakers etc..

Ben.

wei zheng wrote:
>
> Hi Michael & All,
>
>        I have questions about the hardware buttons in neo 
> 1973/freerunner. There are only two buttons on neo 1973/freerunner. 
> Why are three resources in gta01_button_resources array?
>
>  
>
> static struct resource gta01_button_resources[] = {
>
>        [0] = {
>
>               .start = GTA01_GPIO_AUX_KEY,
>
>               .end   = GTA01_GPIO_AUX_KEY,
>
>        },
>
>        [1] = {
>
>               .start = GTA01_GPIO_HOLD_KEY,
>
>               .end   = GTA01_GPIO_HOLD_KEY,
>
>        },
>
>        [2] = {
>
>               .start = GTA01_GPIO_JACK_INSERT,
>
>               .end   = GTA01_GPIO_JACK_INSERT,
>
>        },
>
> };
>