acpi_dev_po...ate_for_wake(9)

okay so welcome to the Kernel API Manual, bestie 💅 this page is all about acpi_dev_power_state_for_wake(9) — and yeah, the running header squishes it to acpi_dev_po...ate_for_wake(9), but the full name is right there in NAME. Let's get into it 🫶

💖 NAME 💖

acpi_dev_power_state_for_wake — deepest power state for wakeup signaling. No cap, that's the whole vibe ✨

✨ SYNOPSIS ✨

u8 acpi_dev_power_state_for_wake (struct acpi_device *adev );

💅 ARGUMENTS 💅

• adev — the ACPI companion of the target device. That's your main character here 🎀

🎀 DESCRIPTION 🎀

So this cutie evaluates _S0W for adev and returns the value produced by it. If there's an error — and yes, that includes the case where _S0W is not present — it returns ACPI_STATE_UNKNOWN. Simple, iconic, done 💖

🦋 SEE ALSO 🦋

Kernel file: ./drivers/acpi/device_pm.c — that's where the magic lives 🔥

And these function besties are all linked:

• acpi_power_state_string(9)
• acpi_device_get_power(9)
• acpi_device_set_power(9)
• acpi_device_fix_up_power(9)
• acpi_device_fix_up_power_extended(9)
• acpi_device_fix_up_power_children(9)
• acpi_dev_power_up_children_with_adr(9)
• acpi_add_pm_notifier(9)
• acpi_remove_pm_notifier(9)
• acpi_dev_pm_get_state(9)
• acpi_pm_device_sleep_state(9)
• acpi_pm_notify_work_func(9)
• acpi_device_wakeup_enable(9)
• acpi_device_wakeup_disable(9)
• acpi_pm_set_device_wakeup(9)
• acpi_dev_pm_low_power(9)
• acpi_dev_pm_full_power(9)
• acpi_dev_suspend(9)
• acpi_dev_resume(9)
• acpi_subsys_runtime_suspend(9)
• acpi_subsys_runtime_resume(9)
• acpi_subsys_prepare(9)
• acpi_subsys_complete(9)
• acpi_subsys_suspend(9)
• acpi_subsys_suspend_late(9)
• acpi_subsys_suspend_noirq(9)
• acpi_subsys_resume_noirq(9)
• acpi_subsys_resume_early(9)
• acpi_subsys_resume(9)
• acpi_subsys_freeze(9)
• acpi_subsys_restore_early(9)
• acpi_subsys_poweroff(9)
• acpi_subsys_poweroff_late(9)
• acpi_subsys_poweroff_noirq(9)
• acpi_dev_pm_detach(9)
• acpi_dev_pm_attach(9)
• acpi_storage_d3(9)
• acpi_dev_state_d0(9)

mwah 💋 this page's source/version is ./drivers/acpi and the date is October 2026. go be iconic with your wakeup signaling, bestie — bye! 🫶✨