acpi_extrac...e_properties(9)

okay bestie, welcome to the Kernel API Manual page for acpi_extract_apple_properties(9) — the header shows it as acpi_extrac...e_properties(9) because terminal width said no 💀. this page is short but iconic, and it's all about grabbing Apple _DSM properties and converting them so the kernel can use them. periodt.

✨ NAME ✨

acpi_extract_apple_properties — retrieve and convert Apple _DSM properties 🍓

🎀 SYNOPSIS 🎀

void acpi_extract_apple_properties (struct acpi_device *adev );

💅 ARGUMENTS 💅

• adev — the ACPI device for which to retrieve the properties. it's giving “pass me the device and I'll handle the rest” energy 👑

🦋 DESCRIPTION 🦋

okay so here's the vibe: this function invokes Apple's custom _DSM once to check the protocol version, and then once more to retrieve the properties. two calls, no cap 😭

those properties are marshalled up in a single package as alternating key/value elements. and the way that's different from _DSD? _DSD stores them as a package of 2-element packages. iykyk — same info, different shape, and this function is literally here to deal with that. 🧚

then it converts everything to _DSD format and makes the properties available under the primary fwnode. slay. that's the whole main character arc ✨

🔥 SEE ALSO 🔥

• Kernel file ./drivers/acpi/x86/apple.c — go read the source, bestie, it's right there 👀

and that's the page! catch u later 💅 this footer energy came from ./drivers/acpi/x86, dated October 2026, and the page name on the footer is acpi_extrac...e_properties(9) 🫶