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power-domain-test

Objectives

I'd like to use pm_domain's power management operations instead of drivers' dev_pm_ops. So I created this pseudo kernel module to test pm domain ops.

Preparing test

  1. Load module

$ sudo insmod ./power-domain-test.ko

  1. Runtime PM Test

    1. Increase reference count. $ sudo echo 1 > /sys/devices/platform/vpd.0/open
    2. Decrease reference count. $ sudo echo 1 > /sys/devices/platform/vpd.0/close

  2. System Suspend Test

$ sudo echo devices > /sys/power/pm_test $ sudo echo disk > /sys/power/state