uvd_v4_2_start(9)

💖 uvd_v4_2_start(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this is the page for uvd_v4_2_start, and no cap, it does exactly one thing and it does it iconically 💅

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🎀 NAME 🎀

uvd_v4_2_start — start the UVD block, that's it, that's the whole vibe 🦋

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✨ SYNOPSIS ✨

int uvd_v4_2_start (struct amdgpu_device *adev );

like literally that's the whole call signature, she's small but she's main character energy 👑

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🌸 ARGUMENTS 🌸

• adev — an amdgpu_device pointer 🫶 that's it, that's the only thing she needs from you

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💜 DESCRIPTION 💜

Setup and start the UVD block 💅✨ lowkey the whole plot of this function, and honestly? she ate. Setup, then start, in that order, periodt 🔥

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c — go read the source, iykyk 📖
• 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_init(9)
• uvd_v4_2_hw_fini(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)

the whole friend group fr fr 🧚💖

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ngl the whole squad lives in ./drivers/gpu/drm/amd/amdgpu, and this page is dated October 2026 ⭐ so yeah, that's the source, that's the date, we stan a documented kernel function 😭🫶

go off bestie, may your UVD block always start on the first try 🌸💀✨