STRUCT GPIO_V2_LINE_VALUES(9)

💅 struct gpio_v2_line_values(9) — like, the whole Kernel API Manual vibe ✨

okay so bestie, we're in the Kernel API Manual today and this one is a tiny little struct that does so much. it's giving "small but mighty" fr fr. it's struct gpio_v2_line_values and it's literally just the values of GPIO lines. that's it. that's the whole thing. and honestly? iconic. 🎀

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🌸 NAME 🌸

struct gpio_v2_line_values — the values of GPIO lines, no cap 💖

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✨ SYNOPSIS ✨

here's the whole shape of it, bestie — copy it exactly, don't be weird about it:

struct gpio_v2_line_values {
    __aligned_u64 bits;
    __aligned_u64 mask;
 };

two __aligned_u64 fields. that's the entire struct. she's compact, she's aligned, she's serving exactly what she needs to serve. 💅

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🦋 Members 🦋

• bits — a bitmap holding the value of the lines. set a bit to 1 for active and 0 for inactive. that's the actual data, the main character of the struct honestly 👑
• mask — a bitmap that says which lines you're getting or setting. each bit number corresponds to the index into struct gpio_v2_line_request.offsets — so like, bit 0 = the first offset, bit 1 = the second one, and on and on. it's the guest list, and bits is what happens to everyone who made it past the rope 🫶

ngl the whole thing only makes sense as a pair: mask picks the lines, bits tells you their values. don't @ me.

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🔥 SEE ALSO 🔥

so many friends, so many (9)s. go read these, iykyk:

• Kernel file ./include/uapi/linux/gpio.h
• struct gpiochip_info(9)
• enum gpio_v2_line_flag(9)
• enum gpio_v2_line_attr_id(9)
• struct gpio_v2_line_attribute(9)
• struct gpio_v2_line_config_attribute(9)
• struct gpio_v2_line_config(9)
• struct gpio_v2_line_request(9)
• struct gpio_v2_line_info(9)
• enum gpio_v2_line_changed_type(9)
• struct gpio_v2_line_info_changed(9)
• enum gpio_v2_line_event_id(9)
• struct gpio_v2_line_event(9)
• struct gpioline_info(9)
• struct gpioline_info_changed(9)
• struct gpiohandle_request(9)
• struct gpiohandle_config(9)
• struct gpiohandle_data(9)
• struct gpioevent_request(9)
• struct gpioevent_data(9)

like, the whole gpio extended universe is in here. a crossover event. 🌈

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and that's the page, bestie! this lil' entry lives in ./include/uapi/linux and the version stamp says October 2026, under the title struct gpio_v2_line_values(9) — so if anyone asks, you heard it from me first. mwah 💜🧚⭐