From: Karl-Heinz Wild (kh.wildwicom.li)
Date: Tue Dec 04 2007 - 09:20:15 CST

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Hi.

Marc Balmer gave me info about adding gpio support
for the new alix boards produced by pcengines.

I hope someone is interested in ... I'll sum it up ...

1. add to GENERIC config

>>> gpio* at gscpcib?
>>> glxpcib* at pci? # AMD CS5536 PCI-ISA bridge
>>> gpio* at glxpcib?

2. booting the new kernel dmesg shows then

>>> gpio0 at glxpcib0: 32 pins
>>> pciide0 at pci0 dev 15 function 2 "AMD CS5536 IDE" rev 0x01: DMA,
>>> channel 0 wired to compatibility, channel 1 wired to compatibility

3. after making the device with MAKEDEV gpio0
4. initializing the gpio for

led 1 = 6; led 2 = 25 and led 3 = 27

with gpioctl -c [led] out iout

5. then - to set or reset the leds use

gpioctl [led] 1 || 0 || 2

for the rest rtfm - gpioctl.

This configuration works for me. Please correct me if something
is wrong or could be done better.

-
Karl-Heinz

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