uvd_v4_2_hw_init(9)

🌸 NAME 🌸

okay so this is the page for uvd_v4_2_hw_init in the Kernel API Manual (yes bestie, kernel API, we're in the big leagues) — and what it does is start and test the UVD block 💅 no cap, that's the whole vibe.

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✨ SYNOPSIS ✨

int uvd_v4_2_hw_init (struct amdgpu_ip_block *ip_block );

literally one function, one pointer, one int coming back at you 🫶

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🎀 ARGUMENTS 🎀

• ip_block — Pointer to the amdgpu_ip_block for this hw instance. that's it, that's the arg 💖 it's the little handle that tells the function which hardware instance we're talking about, iykyk.

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🦋 DESCRIPTION 🦋

so what does it do? three things, and she does them iconically 🌟

• Initialize the hardware 🔥
• boot up the VCPU 👑
• and do some testing 🧚

like, it literally wakes the block up, gets the VCPU going, and then pokes at it to make sure it actually works. main character energy fr fr.

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🌈 SEE ALSO 🌈

the kernel file this lives in, no cap:

• ./drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c

and the whole friend group of related functions — go say hi to all of them 💜

• uvd_v4_2_ring_get_rptr(9)
• uvd_v4_2_ring_get_wptr(9)
• uvd_v4_2_ring_set_wptr(9)
• uvd_v4_2_hw_fini(9)
• uvd_v4_2_start(9)
• uvd_v4_2_stop(9)
• uvd_v4_2_ring_emit_fence(9)
• uvd_v4_2_ring_test_ring(9)
• uvd_v4_2_ring_emit_ib(9)
• uvd_v4_2_mc_resume(9)

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ok that's the whole page bestie, go init some hardware 💀✨

and finally, the lil sign-off: this one's filed under ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 📅 — periodt, that's the footer, love that for us 🎀🫶