STRUCT LM3697(9)

✨ struct lm3697(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 and today's main character is struct lm3697 — it's a little struct from the LED subsystem and it's lowkey iconic for how tidy it is. Let's get into it 🎀

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🌸 NAME 🌸

struct lm3697 —

and honestly? that's it. that's the name entry. the manpage literally just gives us the struct name with a dash and dips 😭 no cap, no description, nothing. we move on 💀

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🦋 SYNOPSIS 🦋

here's the whole shape of her, bestie — copy it exactly, fr fr:

struct lm3697 {
    struct gpio_desc *enable_gpio;
    struct regulator *regulator;
    struct i2c_client *client;
    struct regmap *regmap;
    struct device *dev;
    struct mutex lock;
    int bank_cfg;
    int num_banks;
    struct lm3697_led leds[];
 };

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👑 Members 👑

okay so every single field, and what she actually does ✨

• enable_gpio — the hardware enable gpio 🫶 like the physical "go girl" switch for the chip.
• regulator — the LED supply regulator pointer 🔥 that's where your power's coming from.
• client — pointer to the I2C client 💖 yes, this whole thing rides the I2C bus.
• regmap — the device's register map 🧚 that's how we talk to the registers, iykyk.
• dev — pointer to the device's device struct 🎀 the classic kernel back-pointer, she's everywhere.
• lock — the lock for reading/writing the device 🌈 a struct mutex, keeping your reads and writes from stepping on each other. respect her.
• bank_cfg — the OUTPUT_CONFIG register values 💅 literally just holding those register values for you.
• num_banks — number of control banks ⭐ count 'em.
• leds — array of LED strings 🍓 a flexible-ish array of struct lm3697_led, one per string.

not me pointing out that leds[] is a trailing array with no size in the declaration — that's exactly what the page says, so that's exactly what you get 🙈

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💜 SEE ALSO 💜

• Kernel file ./drivers/leds/leds-lm3697.c
• struct lm3697_led(9)

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and that's the whole vibe check bestie 🌸 this one comes from ./drivers/leds, dated October 2026, and the manual calls her struct lm3697(9) — slay, go read the source, periodt 💖✨🦋