radeon_unreg...atpx_handler(9)

💅 radeon_unreg...atpx_handler(9) — the Kernel API Manual page, bestie edition

okay so this is the manual page for radeon_unreg...atpx_handler(9), straight out of section 9 of the Kernel API Manual, and no I will not be pronouncing the whole thing out loud, the truncation is literally right there in the title 🫶

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✨ NAME ✨

radeon_unregister_atpx_handler — unregister with vga_switcheroo

✨ SYNOPSIS ✨

void radeon_unregister_atpx_handler (void );

✨ ARGUMENTS ✨

• void — no arguments. that's it. that's the whole vibe. nothing to pass, nothing to worry about 💅

✨ DESCRIPTION ✨

so what does it actually do? it unregisters the PX callbacks with vga_switcheroo (all asics). that's the entire thing, no cap.

unregister is the main character here — this is the teardown era, not the setup era 🔥 and yes, it's for all asics, every single one, no exceptions, periodt.

🎀 tiny reminder that this is the *un*register one — if you were looking for the opposite energy, that's a whole different function and it's linked down below, iykyk

✨ SEE ALSO ✨

the kernel file where all the magic lives:

• ./drivers/gpu/drm/radeon/radeon_atpx_handler.c

and the whole friend group of related calls, fr fr:

• radeon_atpx_call(9)
• radeon_atpx_parse_functions(9)
• radeon_atpx_validate(9)
• radeon_atpx_verify_interface(9)
• radeon_atpx_set_discrete_state(9)
• radeon_atpx_switch_disp_mux(9)
• radeon_atpx_switch_i2c_mux(9)
• radeon_atpx_switch_start(9)
• radeon_atpx_switch_end(9)
• radeon_atpx_switchto(9)
• radeon_atpx_power_state(9)
• radeon_atpx_pci_probe_handle(9)
• radeon_atpx_init(9)
• radeon_atpx_get_client_id(9)
• radeon_atpx_detect(9)
• radeon_register_atpx_handler(9)

like, the whole squad is there, go read them, they're iconic 👑

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🌸 okay that's the page!! shoutout to ./drivers/gpu/drm/radeon for hosting this masterpiece, and this little gem is dated October 2026 — so technically it's from the future, which honestly tracks, she's always been ahead of her time 💜✨