sparse_keyma...from_keycode(9)

✨ sparse_keyma...from_keycode(9) ✨

okay so this is a page from the Kernel API Manual, and bestie, it's a short one but it's lowkey iconic. it's all about looking up a keycode in a sparse keymap. let's get into it 🫶

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🌸 NAME 🌸

sparse_keymap_entry_from_keycode — the function that does the sparse keymap lookup for you, no cap 🔍

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🎀 SYNOPSIS 🎀

struct key_entry * sparse_keymap_entry_from_keycode (struct input_dev
*dev , unsigned int keycode );

like, it hands you back a struct key_entry * and it takes a struct input_dev *dev plus an unsigned int keycode. that's the whole vibe ✨

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🦋 ARGUMENTS 🦋

• dev — the input device that's using the sparse keymap 💖 this is your main character here.
• keycode — the key code. that's it. that's the whole thing 🎹

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💅 DESCRIPTION 💅

so what does it actually do? this function performs a struct key_entry lookup inside an input device that's using a sparse keymap. literally that's the job — you give it the device and the keycode, it goes and finds the matching entry. it's giving "designated looker-upper" and honestly? ate 💅✨

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🔥 SEE ALSO 🔥

• kernel file ./drivers/input/sparse-keymap.c — go read the source, bestie, it's right there 📂
• sparse_keymap_entry_from_scancode(9)
• sparse_keymap_setup(9)
• sparse_keymap_report_entry(9)
• sparse_keymap_report_event(9)

like the whole sparse keymap friend group, all linked up 🌈👑

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ngl this one's short and sweet — no scary warnings, no weird edge cases, just a lookup function doing its little thing 💖

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and that's the page!! 🎀 brought to you from ./drivers/input, dated October 2026 — mwah, go forth and look up those keycodes, bestie 🧚💜