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KMDF sample for ASL communication

Unanswered KMDF sample for ASL communication

  • Friday, May 27, 2011 10:23 AM
     
     
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    Hi! All, I'm working on a ACPI device driver which need to talk to ASL code to access the defined methods, can anyone advise me where can I find a sample to follow/ref.?

    Thanks in advance!

     

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  • Sunday, June 05, 2011 11:21 AM
     
     
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    Since no reply but got 500+ views in 10 days, let me add my finding here to attract more attentions on this topic:

    The only way I know is through WMI. Based on the 5 steps in wmiacpi sample, we can add the sample into the ASL of target machine, update ACPI DSDT, and then the KMDF can talk to ASL thr. the defined WMI classes.

    However, it's no good for my case due to the ASL is from factory side, i.e., unchangeable or need a lot of communication efforts.

    Now my plan is back to studying WDM, any hint from anyone is highly appreciated!