ir_do_keydown(9)

💅 ir_do_keydown — like, the kernel API manual, bestie

okay so welcome to ir_do_keydown(9), part of the Kernel API Manual ✨ this is the literal backstage pass to how a keypress gets registered, and honestly? it's giving main character energy but behind the curtain. iykyk.

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🎀 NAME 🎀

ir_do_keydown — the internal function that processes a keypress 💖

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✨ SYNOPSIS ✨

void ir_do_keydown (struct rc_dev *dev , enum rc_proto protocol , u64
scancode , u32 keycode , u8 toggle );

like, that's the whole signature. no cap, that's it. 🫶

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🌸 ARGUMENTS 🌸

• dev — the struct rc_dev descriptor of the device. it's the whole vibe of which device we're talking about 🎀
• protocol — the protocol of the keypress. yes, it's an enum rc_proto, slay 💅
• scancode — the scancode of the keypress. a u64, so it's got range 💜
• keycode — the keycode of the keypress. this is the u32 bestie 🦋
• toggle — the toggle value of the keypress. tiny lil u8, but it matters, fr fr ⭐

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🔥 DESCRIPTION 🔥

so basically this function is used internally to register a keypress. nothing external, nothing public, it's an inside-job situation 🙈

⚠️ and here's the important part, bestie — it must be called with keylock held. like, not "should", not "maybe", must. the vibes are non-negotiable. hold the lock or don't come in 😭

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🦋 SEE ALSO 🦋

it's giving friend group, and here's the whole squad — all in 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_update_mapping(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)
• 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, that's the group chat. everyone's invited 🫶

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🌈 okay that's the whole page bestie — much love from ./drivers/media/rc, dated October 2026, and remember: it's ir_do_keydown(9) forever and always. periodt. 💅👑🎀