ir_lookup_by_scancode(9)

💖 ir_lookup_by_scancode(9) 💖

okay so bestie, this page is from the Kernel API Manual — and it’s literally about ir_lookup_by_scancode, which is giving “find the mapping by scancode” energy. 🦋

🌸 NAME 🌸

ir_lookup_by_scancode — locate mapping by scancode. periodt.

✨ SYNOPSIS ✨

unsigned int ir_lookup_by_scancode (const struct rc_map *rc_map , u64
scancode );

🎀 ARGUMENTS 🎀

• rc_map — the struct rc_map to search. this is the table bestie, fr fr. 🫶
• scancode — scancode to look for in the table. yep, that’s the thing you’re hunting for. 💅

🦋 DESCRIPTION 🦋

this routine performs binary search in RC keykeymap table for given scancode. no cap, it’s just doing a binary search in that RC keykeymap table for the scancode you hand it. 🌸

🔥 RETURN 🔥

it gives you the index in the table, or -1U if not found. like, found it? here’s the index. not found? -1U, bye. 💀

👑 SEE ALSO 👑

the kernel file is ./drivers/media/rc/rc-main.c — and the whole squad is: scancode_to_u64(9), ir_create_table(9), ir_free_table(9), ir_resize_table(9), ir_update_mapping(9), ir_establish_scancode(9), ir_setkeycode(9), ir_setkeytable(9), ir_getkeycode(9), rc_g_keycode_from_table(9), ir_do_keyup(9), rc_keyup(9), ir_timer_keyup(9), ir_timer_repeat(9), rc_repeat(9), ir_do_keydown(9), rc_keydown(9), rc_keydown_notimeout(9), rc_validate_scancode(9), rc_validate_filter(9), struct rc_filter_attribute(9), show_protocols(9), parse_protocol_change(9), store_protocols(9), show_filter(9), store_filter(9), show_wakeup_protocols(9), store_wakeup_protocols(9). 🧚

k byeee 💖 — source/version: ./drivers/media/rc, date: October 2026.