led_classdev...register_ext(9)

✨ led_classdev...register_ext(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 we're gonna talk about led_classdev_multicolor_register_ext and honestly? it's giving "register a whole multicolor LED device" and I'm obsessed 🎀

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🌸 NAME 🌸

led_classdev_multicolor_register_ext — register a new object of led_classdev class with support for multicolor LEDs

like, that's literally the whole vibe: you're spinning up a fresh led_classdev object, but make it multicolor 🌈✨

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🦋 SYNOPSIS 🦋

int led_classdev_multicolor_register_ext (struct device *parent , struct led_classdev_mc *mcled_cdev , struct led_init_data *init_data );

yep, she takes three arguments and hands you back an int, fr fr 🫶

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💜 ARGUMENTS 💜

• parent — the multicolor LED to register 👑 this is the main character of the call ngl
• mcled_cdev — the led_classdev_mc structure for this device 💖 it's literally the struct that carries your device
• init_data — the LED class multicolor device initialization data ✨ the setup deets, the lore, the context

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⭐ RETURN ⭐

0 on success, or a negative error value on failure 😭

so like, if you get 0 you're slaying, and if you get a negative value something went sideways — that's your vibe check failing, no cap 💀

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🧚 SEE ALSO 🧚

• Kernel file ./include/linux/led-class-multicolor.h — the header, the source of truth 📄
• struct mc_subled(9) — the sub-LED struct, iconic
• led_classdev_multicolor_unregister(9) — the "undo" bestie, always good to know her 🫶
• led_mc_calc_color_components(9) — the color math girlie 🌈

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and that's the page, bestie 💅 brought to you by the Kernel API Manual, straight outta ./include/linux, dated October 2026 ⭐ go forth and register those multicolor LEDs, you've got this 👑🎀