Re: [Soekris] [RFC][PATCH] LED Class support for Soekris net48xx

[Chris Boot <bootc@bootc.net>]

Jim Cromie wrote:
> Chris Boot wrote:
>> Hi all,
>>
>> After many years using Linux and hanging about on LKML without having 
>> done much actual kernel hacking, I've decided to have a go! The module 
>> below adds LED Class device support for the Soekris net48xx Error LED. 
>> Tested only on a net4801, but should work on a net4826 as well. I'd 
>> love to find a way of detecting a Soekris net48xx device but there is 
>> no DMI or any Soekris-specific PCI devices.
>>
>> The patch is attached because Thunderbird kills tabs.
>>
> FWIW, the vintage scx200_gpio driver manipulates the LED just fine.
> 
> # cat /etc/modprobe.d/gpio
> # assign last 2 dynamic devnums to gpio (255..240)
> options scx200_gpio major=240
> options pc8736x_gpio major=241
> 
> soekris:~# ll /dev/led
> crw-r--r-- 1 root root 240, 20 Jun 24  2005 /dev/led
> 
> echo 1 > /dev/led
> 
> 
> Is this insufficient ?

It works indeed very well, and this driver actually uses the scx200_gpio module 
to do its work. But no it isn't enough, since this code ties into the existing 
LED framework and can do nice built-in functionality like blinking according to 
a timer, IDE disk activity, and a heatbeat-style load indicator. For free.

Chris

-- 
Chris Boot
bootc@bootc.net
http://www.bootc.net/