STRUCT MESON_IR_PROTOCOL(9)

💖 struct meson_ir_protocol(9) 💖

okay bestie so we're in the Kernel API Manual rn — yes, that Kernel API Manual — and today's main character is struct meson_ir_protocol, which is literally the glow-up blueprint for describing your IR Protocol parameters. no cap, it's giving "config struct that knows exactly what it wants." 🎀

---

✨ NAME ✨

struct meson_ir_protocol — the struct that describes your IR Protocol parameter 💅

---

🌸 SYNOPSIS 🌸

struct meson_ir_protocol {
    u8 hw_protocol;
    bool repeat_counter_enable;
    bool repeat_check_enable;
    bool repeat_compare_enable;
    bool bit_order;
    bool bit1_match_enable;
    bool hold_code_enable;
    bool count_tick_mode;
    u8 code_length;
    u16 frame_time_max;
    u16 leader_active_max;
    u16 leader_active_min;
    u16 leader_idle_max;
    u16 leader_idle_min;
    u16 repeat_leader_max;
    u16 repeat_leader_min;
    u16 bit0_max;
    u16 bit0_min;
    u16 bit1_max;
    u16 bit1_min;
    u16 duration2_max;
    u16 duration2_min;
    u16 duration3_max;
    u16 duration3_min;
 };

like, look at her. all those u16 fields lined up like a little army of timing values. iconic. 🫶

---

🦋 Members 🦋

okay so, member by member, let's get into it:

• hw_protocol — this one literally selects the IR Protocol from the IR Controller. the vibe-setter, periodt. ✨
• repeat_counter_enable — turns on the frame-to-frame time counter. heads up tho: it's supposed to work with repeat_compare_enable to detect the repeat frame. team effort, iykyk 💅
• repeat_check_enable — enables the repeat time check for repeat detection. that's it, that's the whole job, and she does it well. 🎀
• repeat_compare_enable — enables comparing the frame for repeat frame detection. some IR Protocol send the same data as a repeat frame — and in that case, this one should work together with repeat_counter_enable to detect the repeat frame. dynamic duo energy fr fr 🌈
• bit_order — the bit order, bestie. LSB or MSB. pick your fighter 💀
• bit1_match_enable — enables checking bit 1. tiny flag, big responsibility. ⭐
• hold_code_enable — holds the frame code in register IR_DEC_FRAME1, and the new one frame code will not be stored in IR_DEC_FRAME1 until IR_DEC_FRAME1 has been read. so basically it's like "don't talk to me till I've finished reading my messages" 🙈
• count_tick_mode — sets the increasing time unit of the frame-to-frame time counter. 0 = 100us, 1 = 10us. choose wisely, one of these is ten times speedier 🧚
• code_length — the length (N-1) of the data frame. note the N-1, okay? it's not N. it's N minus one. do not come for me 🔥
• frame_time_max — max time for the whole frame. unit: MESON_HW_TRATE ⏱️
• leader_active_max — max time for the NEC/RC6 leader active part. unit: MESON_HW_TRATE 👑
• leader_active_min — min time for the NEC/RC6 leader active part. unit: MESON_HW_TRATE 👑
• leader_idle_max — max time for the NEC/RC6 leader idle part. unit: MESON_HW_TRATE 💤
• leader_idle_min — min time for the NEC/RC6 leader idle part. unit: MESON_HW_TRATE 💤
• repeat_leader_max — max time for the NEC repeat leader idle part. unit: MESON_HW_TRATE 🔁
• repeat_leader_min — min time for the NEC repeat leader idle part. unit: MESON_HW_TRATE 🔁
• bit0_max — max time for NEC Logic '0', half of RC6 trailer bit, XMP Logic '00' 🌸
• bit0_min — min time for NEC Logic '0', half of RC6 trailer bit, XMP Logic '00' 🌸
• bit1_max — max time for NEC Logic '1', whole of RC6 trailer bit, XMP Logic '01' 🌟
• bit1_min — min time for NEC Logic '1', whole of RC6 trailer bit, XMP Logic '01' 🌟
• duration2_max — max time for half of RC6 normal bit, XMP Logic '10' 💜
• duration2_min — min time for half of RC6 normal bit, XMP Logic '10' 💜
• duration3_max — max time for whole of RC6 normal bit, XMP Logic '11' 🔥
• duration3_min — min time for whole of RC6 normal bit, XMP Logic '11' 🔥

ok real talk: all those _max / _min pairs are literal time windows and every one of them that says Unit: MESON_HW_TRATE means exactly that unit. don't go mixing in microseconds and then act surprised, bestie 😭

---

💫 SEE ALSO 💫

• Kernel file ./drivers/media/rc/meson-ir.c — go read the source, she's right there 🦋

---

and that's the whole page, bestie! 💖 this lil masterpiece lives in ./drivers/media/rc and it's dated October 2026 — yes, from the future, and still slaying. ngl, the Kernel API Manual could never be boring with entries like this one. mwah 🎀✨🌷