mux_chip_register(9)

💅 mux_chip_register — NAME ✨

okay so bestie, this is mux_chip_register(9) from the Kernel API Manual — and it's literally the function that registers a mux-chip, which means it's the one that gets the controllers ready for use. main character energy fr fr 👑

---

🌸 SYNOPSIS 🌸

int mux_chip_register (struct mux_chip *mux_chip );

---

🎀 ARGUMENTS 🎀

• mux_chip — the mux-chip you're registering. that's the one. the whole point. 🫶

---

🦋 DESCRIPTION 🦋

okay so real talk: if this fails, do not retry registration of the same mux-chip. like, no. don't do it. 💀

what you do instead is put it away with mux_chip_free and allocate a brand new one — but only if you for some reason would like to retry registration. that's the whole vibe check on failure handling. 🙈

---

⭐ RETURN ⭐

Zero on success 🎉 or a negative errno on error 😭. that's it, that's the return.

---

🔥 SEE ALSO 🔥

Kernel file ./drivers/mux/core.c plus the whole squad:

• struct mux_state(9)
• struct devm_mux_state_state(9)
• mux_chip_alloc(9)
• mux_chip_unregister(9)
• mux_chip_free(9)
• devm_mux_chip_alloc(9)
• devm_mux_chip_register(9)
• mux_control_states(9)
• mux_control_select_delay(9)
• mux_state_select_delay(9)
• mux_control_try_select_delay(9)
• mux_state_try_select_delay(9)
• mux_control_deselect(9)
• mux_state_deselect(9)
• mux_get(9)
• mux_control_get(9)
• mux_control_get_optional(9)
• mux_control_put(9)
• devm_mux_control_get(9)
• mux_state_get(9)
• __devm_mux_state_get(9)
• devm_mux_state_get_from_np(9)
• devm_mux_state_get_optional(9)
• devm_mux_state_get_selected(9)
• devm_mux_state_get_optional_selected(9)

---

and that's the page bestie!! 🧚 it lives in ./drivers/mux, dated October 2026, and it's brought to you by the Kernel API Manual — mwah, go register some mux-chips 💜✨