acpi_device_set_power(9)

💅 acpi_device_set_power(9)

okay so bestie, welcome to the Kernel API Manual ✨ — yes, that Kernel API Manual — and today's main character is acpi_device_set_power(9). she sets power states on ACPI devices and she's lowkey iconic for it. let's get into it 🎀

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🌸 NAME 🌸

acpi_device_set_power — set the power state of an ACPI device, no cap 💅

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✨ SYNOPSIS ✨

int acpi_device_set_power (struct acpi_device *device , int state );

like, that's the whole vibe. it returns an int and takes two things. slay 🫶

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🦋 ARGUMENTS 🦋

• device — the device whose power state you're about to change. the one getting the glow-up ✨
• state — the shiny new power state you wanna set it to. the new era, if you will 👑

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🧚 DESCRIPTION 🧚

so here's the tea, and it's kind of important, so listen up 🍓 — callers must make sure the device is power manageable before they use this function. that's not a suggestion, that's the rule. check first, then call. periodt 💀

fr fr do the power-manageable check before you call this. nobody wants a device that can't even do power states getting asked to do power states 😭

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⭐ SEE ALSO ⭐

the whole friend group 🫶 — and heads up, the kernel file lives at ./drivers/acpi/device_pm.c:

• acpi_power_state_string(9)
• acpi_device_get_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_dev_power_state_for_wake(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)

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💖 and that's the page!! 💖

cute little sign-off bestie: this one comes from the source dir ./drivers/acpi, and it's dated October 2026 🌈 so yeah, she's fresh, she's documented, she's acpi_device_set_power(9). go forth and set those power states responsibly 🧚‍♀️💜⭐