amd_halo_brightness_set(9)

✨ amd_halo_brightness_set ✨

okay bestie, so this one is a kernel API page from the Kernel API Manual — yes, the "9" in the name means it's a kernel function, we love a section-9 moment 💅

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🌸 NAME 🌸

amd_halo_brightness_set — literally just set LED brightness 🎀 that's the whole vibe, no cap

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🦋 SYNOPSIS 🦋

int amd_halo_brightness_set (struct led_classdev *cdev , enum
       led_brightness brightness );

so the signature is exactly that, bestie — int going in, int coming out, two args, do not touch my formatting 💖

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✨ ARGUMENTS ✨

• cdev — the LED class device, i.e. your little LED main character 🌈
• brightness — the brightness value, as in how bright we're going ✨

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💜 RETURN 💜

• 0 on success — slay, it worked 🫶
• a negative error code on failure — not the vibe, but at least it tells you 😭

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/platform/x86/amd/amd_halo_led.c — that's the home turf, go read it iykyk 📂
• struct amd_halo_led_data(9) — the struct, iconic 👑
• amd_halo_wmi_turn_off(9) — the off button of the family 💀
• amd_halo_wmi_set_rgb(9) — setting the colours, obsessed 🌈
• amd_halo_wmi_get_rgb(9) — getting the colours back, the reciprocity 🧚

ngl bestie, if you're poking around the LED brightness there's a whole little friend group of amd_halo_* functions up there — check the whole squad before you ship ✨

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and that's the page, fr fr 💖 this one lives in ./drivers/platform/x86/amd — shoutout to the October 2026 date on it, and the version tag is right there in the header/footer combo: amd_halo_brightness_set(9) both ways, our matching bookends 🎀🦋 bye bestie, go set some brightness 💅