dce_v10_0_hpd_set_polarity(9)

💅 dce_v10_0_hpd_set_polarity(9) — Kernel API Manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual and it's about one (1) little callback that flips the polarity of a hotplug detect pin. tiny function, big main character energy. let's get into it ✨

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🌸 NAME 🌸

dce_v10_0_hpd_set_polarity — the hpd set polarity callback. that's it, that's the whole vibe. 🫶

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🦋 SYNOPSIS 🦋

void dce_v10_0_hpd_set_polarity (struct amdgpu_device *adev , enum
amdgpu_hpd_id hpd );

like, it returns nothing (void), and it takes two things. no cap. 💜

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💖 ARGUMENTS 💖

• adev — an amdgpu_device pointer. yes bestie, the whole device. iconic.
• hpd — the hpd pin. and before you ask, hpd = hotplug detect, iykyk 🔥

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✨ DESCRIPTION ✨

so what does it do?? it sets the polarity of the hpd pin (evergreen+). that's the entire plot. lowkey simple, highkey essential. slay 🌈

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👑 SEE ALSO 👑

the kernel file lives here, periodt:

• ./drivers/gpu/drm/amd/amdgpu/dce_v10_0.c

and here's the whole friend group 🫶 — every single one of these:

• dce_v10_0_page_flip(9)
• dce_v10_0_hpd_sense(9)
• dce_v10_0_hpd_init(9)
• dce_v10_0_hpd_fini(9)
• dce_v10_0_line_buffer_adjust(9)
• cik_get_number_of_dram_channels(9)
• dce_v10_0_dram_bandwidth(9)
• dce_v10_0_dram_bandwidth_for_display(9)
• dce_v10_0_data_return_bandwidth(9)
• dce_v10_0_dmif_request_bandwidth(9)
• dce_v10_0_available_bandwidth(9)
• dce_v10_0_average_bandwidth(9)
• dce_v10_0_latency_watermark(9)
• dce_v10_0_average_bandwidth_vs_dram_bandwidth_for_display(9)
• dce_v10_0_average_bandwidth_vs_available_bandwidth(9)
• dce_v10_0_check_latency_hiding(9)
• dce_v10_0_program_watermarks(9)
• dce_v10_0_bandwidth_update(9)
• dce_v10_0_pick_pll(9)

bandwidth this, bandwidth that — the whole squad showed up and they all ate 💅

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that's the page!! manifesting good polarity for u and ur hpd pins. this masterpiece came from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's dce_v10_0_hpd_set_polarity(9) all day every day. mwah 💋✨