amdgpu_regis...atpx_handler(9)

✨ amdgpu_register_atpx_handler(9) ✨

okay so bestie, welcome to the Kernel API Manual 🎀 — you're reading amdgpu_regis...atpx_handler(9) (yes the title bar truncates it, that's just the terminal being dramatic, it's fine 💅) and honestly it's a short one, so we can absolutely get through this together.

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🌸 NAME 🌸

amdgpu_register_atpx_handler — register with vga_switcheroo 🦋

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✨ SYNOPSIS ✨

void amdgpu_register_atpx_handler (void );

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💜 ARGUMENTS 💜

• void — no arguments. none. zero. the void is empty, bestie, it takes literally nothing 🙈

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🔥 DESCRIPTION 🔥

So what does this little icon do? It registers the PX callbacks with vga_switcheroo, and — heads up — it does that for all asics. every single one. no cap 💀

That's it. That's the whole job. It's giving "small function, big responsibility" energy 👑 and honestly? we love that for it.

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🌈 SEE ALSO 🌈

the whole friend group, fr fr 🫶 — go say hi to:

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
• amdgpu_atpx_call(9)
• amdgpu_atpx_parse_functions(9)
• amdgpu_atpx_validate(9)
• amdgpu_atpx_verify_interface(9)
• amdgpu_atpx_set_discrete_state(9)
• amdgpu_atpx_switch_disp_mux(9)
• amdgpu_atpx_switch_i2c_mux(9)
• amdgpu_atpx_switch_start(9)
• amdgpu_atpx_switch_end(9)
• amdgpu_atpx_switchto(9)
• amdgpu_atpx_power_state(9)
• amdgpu_atpx_pci_probe_handle(9)
• amdgpu_atpx_init(9)
• amdgpu_atpx_get_client_id(9)
• amdgpu_atpx_detect(9)
• amdgpu_unregister_atpx_handler(9)

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that's the whole page, bestie, you ate that 🍓✨ and before you close the tab: this little gem lives in ./drivers/gpu/drm/amd/amdgpu and the docs are stamped October 2026 — so like, go forth and register those callbacks, mwah 💖🧚🌟