platform, pnp and mmc bus

[Pierre Ossman]

David Zeuthen wrote:

>>My point was that PNP isn't a physical bus. The devices located on what 
>>linux calls the PNP bus might be physically connected to ISA, LPC or 
>>something else. I figured that the point of HAL was to isolate 
>>applications from how the kernel is designed.  Sorting devices by 
>>physical connection seemed to be the logical choice then.
>>
>>    
>>
>
>Right; I think we can safely put just use info.bus=pnp since that is
>how the kernel groups such devices. So, when all drivers are loaded
>do you get an entry in /sys/block? Does it have a device link that
>points to the device in /sys/devices?
>
>  
>
Yup. I get a /sys/block/mmcblk0 with a device that points to 
/sys/devices/pnp0/00:01/mmc0:affe.
So here we have two devices. The controller (/sys/devices/pnp0/00:01) 
and the card (*/mmc0:affe).
The second is also found as a symlink under /sys/bus/mmc/devices. There 
is no /sys/devices/mmc.

Rgds
Pierre

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