mux_control_get_optional(9)

✨ mux_control_get_optional(9) ✨

okay bestie so this is a page straight out of the Kernel API Manual, and it's literally called mux_control_get_optional — like, go get the optional mux-control for a device 🎀 ngl the name ate and left no crumbs.

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💖 NAME 💖

mux_control_get_optional — Get the optional mux-control for a device.

bestie it does exactly what it says on the tin, no cap 🫶

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🌸 SYNOPSIS 🌸

struct mux_control * mux_control_get_optional (struct device *dev ,
const char *mux_name );

look at that signature, it's giving main character energy 👑

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🦋 ARGUMENTS 🦋

• dev — The device that needs a mux-control. like the device is the one asking for the glow-up 💅
• mux_name — The name identifying the mux-control. this is how you find your mux in the group chat, iykyk 🎯

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⭐ RETURN ⭐

okay so here's the vibe check on what you get back:

• Pointer to the mux-control on success 🎉 slay
• an ERR_PTR with a negative errno on error 😭 not slay
• or NULL if mux doesn't exist 💀 that's the "optional" part doing its whole thing

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🌈 SEE ALSO 🌈

fr fr go read the rest of the family, they're all iconic:

Kernel file ./drivers/mux/core.c

• struct mux_state(9)
• struct devm_mux_state_state(9)
• mux_chip_alloc(9)
• mux_chip_register(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_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)

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and that's the whole page bestie, no notes 🧚💜

this one lives in ./drivers/mux, and it's dated October 2026 — mwah, bookmark it, screenshot it, send it to the group chat 🔥👑