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Differential D56958

acpi_powerres: Interface for getting D-state of devices from userspace
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Authored by obiwac on May 12 2026, 10:33 AM.
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Summary

Currently, there's no way to do this on FreeBSD.

TODO:

  • Need to make sure that the ACPI_STATE_Dx constants are actually available to userspace.
  • Would like to base this on actual D-state getting instead of what our buggy D-state code things the current device D-state is.

Sponsored by: The FreeBSD Foundation

Test Plan

I will eventually update devinfo(8) with a switch to print out the D-state of ACPI devices, which will use this interface.

Diff Detail

Repository
rG FreeBSD src repository
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Build Status
Buildable 73007
Build 69890: arc lint + arc unit

Revision Contents
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PathSize
sys/
dev/
acpica/
4 lines
54 lines
9 lines
1 line

Diff 177628

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sys/dev/acpica/acpi.c

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sys/dev/acpica/acpi_powerres.c

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sys/dev/acpica/acpiio.h

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sys/dev/acpica/acpivar.h

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