Power button in Android

[hajimohammed]

Hi,

      We are currently working on IMX6 custom board & our OS is android lollipop with 3.10.53 linux kernel. When we press the power button, we have to get Reboot / Shutdown  power status popup but we are not able to configure our gpio to perform this power button functionality.

       Please provide a solution to fix it

Regards,

Haji

[aravinthkumarja]

Hi Haji,

In dts under gpio-keys section add the below line.

power {
label = "Power Button";
gpios = <&gpio3 29 1>;   //Here you need to give your gpio number
gpio-key,wakeup;
linux,code = <KEY_POWER>;
};

Hope above information is helpful for you!

Regards,

Aravinth

[hajimohammed]

Hi,

  When we using below code,we are able to get only power off popup (working). If i want to reboot/restart popup what are the changes i need to do

#define POWER_OFF        IMX_GPIO_NR(2, 4)

static struct gpio_keys_button buttons[] = {
        {
                .gpio           = POWER_OFF,
                .code           = KEY_POWER,
                .desc           = "Power Off Button",
                .type           = EV_KEY,
                .active_low     = 0,
                .wakeup         = 1,
        }
};

static struct gpio_keys_platform_data button_data = {
        .buttons        = buttons,
        .nbuttons       = ARRAY_SIZE(buttons),
};

static struct platform_device button_device = {
        .name           = "gpio-keys",
        .id             = -1,
        .num_resources  = 0,
        .dev            = {
                .platform_data  = &button_data,
        }
};

[vinodmaverickr0]

Hi Haji,

For restart you can try by modifying the below code. 

.code           = KEY_POWER,  

.code        =  KEY_RESTART,  //try this

Thanks,

Vinod

[aravinthkumarja]

Hi Haji,

Do the below changes,

.code = KEY_SCREENLOCK,

Regards,

Aravinth

[hajimohammed]

Hi aravinthkumar,

         With below code changes also we are getting only poweroff popup. but we need reboot/restart popup

.code = KEY_SCREENLOCK,

[aravinthkumarja]

Hi Haji,

That is application layer dependency. Ask them to check, If you get long press event from "KEY_SCREENLOCK" , popup the expected function(Reboot, poweroff, Screenshot, etc).

Hope above information is helpful for you!

Regards,

Aravinth

[deepanrajanbara]

hi aravinthkumar jayaprakasam

Is there any way to configure the same power button click event to show reboot option also ?

Thank you,

Deepanraj.A

[aravinthkumarja]

Hi Deepanraj,

Yes. we can do it. It's just android pop-up. 

Regards,

Aravinth

[deepanrajanbara]

How to configure that pop up do you know ?

Thank you,

Deepanraj.A

[aravinthkumarja]

Hi Deepanraj,

Sorry for the delay. Android App developer know about it.

Regards,

Aravinth

[Bio_TICFSL]

Hi haji,

You need to do a key mapping to the AOSP power key 

PowerManager | Android Developers 

Key layout files are searched for in the following order:

• /system/usr/keylayout/Vendor_XXXX_Product_XXXX_Version_XXXX.kl
• /system/usr/keylayout/Vendor_XXXX_Product_XXXX.kl
• /system/usr/keylayout/DEVICE_NAME.kl
• /data/system/devices/keylayout/Vendor_XXXX_Product_XXXX_Version_XXXX.kl
• /data/system/devices/keylayout/Vendor_XXXX_Product_XXXX.kl
• /data/system/devices/keylayout/DEVICE_NAME.kl
• /system/usr/keylayout/Generic.kl/

Regards