ir_update_mapping(9)

💅 ir_update_mapping(9) — Kernel API Manual energy

okay so real talk, bestie: this is ir_update_mapping, living its best life in the Kernel API Manual (yes, section 9, we love a kernel-internals moment). It's the lil function that swaps out one keycode in the scancode→keycode table, and honestly? iconic. 🎀

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✨ NAME ✨

ir_update_mapping — set a keycode in the scancode->keycode table 🦋

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🌸 SYNOPSIS 🌸

unsigned int ir_update_mapping (struct rc_dev *dev , struct rc_map
*rc_map , unsigned int index , unsigned int new_keycode );

that's the whole vibe, no cap. four args, one unsigned int coming back at you. ✨

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💖 ARGUMENTS 💖

• dev — the struct rc_dev device descriptor. it's giving "who dis" but for your remote control device 👑
• rc_map — the scancode table that's about to get adjusted. yes, that table. be nice to it 🫶
• index — the index of the mapping that needs to be updated. like, which row are we editing bestie 📍
• new_keycode — the desired keycode. the glow-up you want to put in there 💅

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🔥 DESCRIPTION 🔥

so here's the tea: this routine is used to update the scancode->keycode mapping at a given position. that's it, that's the whole thing. you point at a spot, you hand it a new keycode, it does the swap. main character energy, zero drama. ⭐

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⭐ RETURN ⭐

it hands you back the previous keycode assigned to the mapping — i.e. the one that was there before you showed up and changed everything. the before picture, if you will 😭

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🦋 SEE ALSO 🦋

okay bestie, buckle up, this is a long list and we're not skipping a single one, periodt. 💀

• the kernel file ./drivers/media/rc/rc-main.c 👀
• scancode_to_u64(9)
• ir_create_table(9)
• ir_free_table(9)
• ir_resize_table(9)
• ir_establish_scancode(9)
• ir_setkeycode(9)
• ir_setkeytable(9)
• ir_lookup_by_scancode(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)

like I said. all of them. ate and left no crumbs 🍓

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ngl, this one's a snack-sized page — no bugs flagged, no warnings, no deprecated anything to yell about. just pure, well-adjusted table-updating behavior. 🌈

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and that's the page, bestie! brought to you from ./drivers/media/rc, dated October 2026, straight out of the Kernel API Manual (section 9, obviously 💜). go forth and update those mappings, mwah 🧚💖