android buttons definition

jfsimon — Thu, 21 Feb 2013 21:00:36 GMT

Hi,

I understand android buttons can be hooked to any PAD on the i.mx6 CPUs.

For example on the sabrelite, i can see android buttons are defined in u-boot like the followoing:

board/freescale/mx6qsabrelite/mx6qsabrelite.c:

........

static struct button_key const buttons[] = {

{"back", IMX_GPIO_NR(2, 2), 'B'},

{"home", IMX_GPIO_NR(2, 4), 'H'},

{"menu", IMX_GPIO_NR(2, 1), 'M'},

{"search", IMX_GPIO_NR(2, 3), 'S'},

{"volup", IMX_GPIO_NR(7, 13), 'V'},

{"voldown", IMX_GPIO_NR(4, 5), 'v'},

};

........

My question is how android is made aware of this PAD to buttons mapping?

Thanks a lot

-jfs

Re: android buttons definition

daiane_angolini — Tue, 26 Feb 2013 14:14:30 GMT

Take a look on kernel image, on board file

it should be something like:

<kernel>/arch/arm/mach-mx6/board-imx6sabrelite.c

You will see kernel defines buttons as well