how to control Atom C3558 GPIO under Linux?

[wolfsu]

HW use GPIO[5] pin(output of C3558) connected to an input pin of WiFi chip to pull high/low on this pin.

What Linux driver or kernel module should I use to control this GPIO?

There is only 1 gpiochip508 in my sys-fs as below, but it seems to be used for UART to USB control:

$ ll /sys/class/gpio/
total 0
drwxr-xr-x 2 root root 0 Dec 11 09:41 ./
drwxr-xr-x 68 root root 0 Dec 11 09:41 ../
--w------- 1 root root 4096 Dec 11 09:41 export
lrwxrwxrwx 1 root root 0 Dec 11 09:41 gpiochip508 -> ../../devices/pci0000:00/0000:00:15.0/usb1/1-3/1-3:1.0/gpio/gpiochip508/
--w------- 1 root root 4096 Dec 11 09:41 unexport

$ lspci -s 00:15.0
00:15.0 USB controller: Intel Corporation Atom Processor C3000 Series USB 3.0 xHCI Controller (rev 11)

$ cat /sys/class/gpio/gpiochip508/label
cp210x

[CarlosAM_INTEL]

Hello, @wolfsu:

Thank you for contacting Intel Embedded Community.

You should address this type of questions as a reference to the channel listed on the following website:

https://01.org/community

Best regards,

@CarlosAM_INTEL.

[wolfsu]

Hi CarlosAM_INTEL

Sorry! Do you mean I have to create a new account on https://01.org/community , and repeat my question again? If yes, which channel should I use?

Thanks,

Wolf

[CarlosAM_INTEL]

Hello, @wolfsu:

Thanks for your reply.

Your answer to your last communication should be obtained by filling out as a reference to the following form:

https://01.org/about/contact-us

Best regards,

@CarlosAM_INTEL 

[wolfsu]

Hello @CarlosAM_INTEL ,

Done!

Regards,

Wolf