ACPI to driver connection

ACPI to driver connection

[Pierre Ossman]

I'm currently writing a driver for a sd card reader. This reader is 
present in the ACPI DSDT tree and can be identified there using the EISA 
PNP id. I'm not all too familiar with exactly how ACPI works and even 
less how ACPI works on linux so my question is this. Is there anything 
my driver should do to associate the entries in the DSDT with the 
device? Perhaps there are methods that should be called or similar? I do 
not have the time to study ACPI in detail so I'd appreciate any help.

Rgds
Pierre Ossman


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Re: ACPI to driver connection

[Pavel Machek]

Hi!

> I'm currently writing a driver for a sd card reader. This reader is 
> present in the ACPI DSDT tree and can be identified there using the EISA 
> PNP id. I'm not all too familiar with exactly how ACPI works and even 
> less how ACPI works on linux so my question is this. Is there anything 
> my driver should do to associate the entries in the DSDT with the 
> device? Perhaps there are methods that should be called or similar? I do 
> not have the time to study ACPI in detail so I'd appreciate any help.

See for example battery.c driver -- it detects battery based on PNP
id.
								Pavel
-- 
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Re: ACPI to driver connection

[Pierre Ossman]

Pavel Machek wrote:

>Hi!
>
>  
>
>>I'm currently writing a driver for a sd card reader. This reader is 
>>present in the ACPI DSDT tree and can be identified there using the EISA 
>>PNP id. I'm not all too familiar with exactly how ACPI works and even 
>>less how ACPI works on linux so my question is this. Is there anything 
>>my driver should do to associate the entries in the DSDT with the 
>>device? Perhaps there are methods that should be called or similar? I do 
>>not have the time to study ACPI in detail so I'd appreciate any help.
>>    
>>
>
>See for example battery.c driver -- it detects battery based on PNP
>id.
>								Pavel
>  
>
The acpi_device doesn't seem to be connected to a "normal" device 
structure. Is the intention that one should register with the ACPI 
subsystem, wait for the add routine to be called and then add the device 
as previously (to the platform bus in this case)?

/Pierre



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