ir_rcmm_decode(9)

💅 ir_rcmm_decode — the RCMM decoder era 💅

okay so real talk, this page is ir_rcmm_decode(9) from the Kernel API Manual, and bestie, if you're poking at RCMM infrared decoding in the kernel, you're gonna want this one. it's giving "niche but iconic" ✨

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🎀 NAME 🎀

ir_rcmm_decode — decode exactly one RCMM pulse or space, that's it, that's the whole job 🫶

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✨ SYNOPSIS ✨

int ir_rcmm_decode (struct rc_dev *dev , struct ir_raw_event ev );

like, yes, that spacing is literally how it's written, don't come for me 😭

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🌸 ARGUMENTS 🌸

• dev — the struct rc_dev descriptor of the device 💖 so we know whose vibe we're decoding.
• ev — the struct ir_raw_event descriptor of the pulse/space ⭐ the actual little blip of IR we're looking at.

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🦋 DESCRIPTION 🦋

so what does it do? it decodes one RCMM pulse or space, periodt. 💅

but here's the important part, no cap: this function returns -EINVAL if the pulse violates the state machine 🔥 like if the incoming pulse doesn't fit the rules the decoder is following, you get -EINVAL back. that's the whole warning, bestie, don't ignore it 🙈

lowkey reminder: "violates the state machine" is the exact condition from the manpage — not me being dramatic, it's fr fr what it says 💀

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/media/rc/ir-rcmm-decoder.c — go read the source, iykyk 👑

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and that's the page!! 💜 cute little sign-off for you: this gem lives under ./drivers/media/rc and the date on it is October 2026 🌈 so yeah, timestamped and everything, slay 🎀✨