gpiod_get_ar...lue_cansleep(9)

💅 NAME ✨

Welcome to the gpiod_get_ar...lue_cansleep(9) page in the Kernel API Manual, bestie 🫶. This one is all about gpiod_get_array_value_cansleep - read values from an array of GPIOs. It's giving "group chat, but for GPIO values" energy, no cap.

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✨ SYNOPSIS ✨

int gpiod_get_array_value_cansleep (unsigned int array_size , struct
gpio_desc **desc_array , struct gpio_array *array_info , unsigned long
*value_bitmap );

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🎀 ARGUMENTS 🎀

• array_size — number of elements in the descriptor array / value bitmap. Basically the headcount for this little GPIO squad 💅.
• desc_array — array of GPIO descriptors whose values will be read. The main characters, fr fr.
• array_info — information on applicability of fast bitmap processing path. Lowkey important for whether the fast path is applicable 👀.
• value_bitmap — bitmap to store the read values. This is where the read values get tucked in, cute and organized 🎀.

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🦋 DESCRIPTION 🦋

Okay so what it actually does: it reads the logical values of the GPIOs — and yes, that means it takes their ACTIVE_LOW status into account 💅. So you're getting the logical vibe, not just raw pin state. Iconic.

The big caveat: this function is to be called from contexts that can sleep 😴. Like, that's literally the _cansleep of it all. Do not bring this to an atomic-context party where nobody is allowed to snooze, bestie. That would be a whole mess.

Sleepy context only, okay? This is not the function for "can't sleep, clown will eat me" situations 😭.

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🔥 RETURN 🔥

0 on success, or negative errno on failure — no cap, that's the whole mood. 0 = slay, negative errno = the vibe check did not pass 😭.

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/gpio/gpiolib.c — the main character file. And the extended friend group is literally all of these:

• gpio_to_desc(9), gpio_device_get_desc(9), desc_to_gpio(9), gpiod_hwgpio(9), gpiod_to_chip(9), gpiod_to_gpio_device(9), gpio_device_get_base(9), gpio_device_get_label(9), gpio_device_get_chip(9), gpiochip_find_base_unlocked(9), gpiod_is_equal(9), gpiod_get_direction(9), gpiod_is_single_ended(9), gpiochip_query_valid_mask(9), gpiochip_get_data(9), gpiochip_remove(9), gpio_device_find(9), gpio_device_find_by_label(9), gpio_device_find_by_fwnode(9), gpio_device_get(9), gpio_device_put(9), gpio_device_to_device(9)
• gpiochip_set_hierarchical_irqchip(9), gpiochip_irq_domain_activate(9), gpiochip_irq_domain_deactivate(9), gpiochip_irq_map(9), gpiochip_add_irqchip(9), gpiochip_irqchip_remove(9), gpiochip_irqchip_add_domain(9), gpiochip_generic_request(9), gpiochip_generic_free(9), gpiochip_generic_config(9), gpiochip_add_pingroup_range(9), gpiochip_add_pin_range_with_pins(9), gpiochip_remove_pin_ranges(9), gpiochip_dup_line_label(9), gpiochip_request_own_desc(9), gpiochip_free_own_desc(9), gpio_set_debounce_timeout(9), gpiod_direction_input(9), gpiod_direction_output_raw(9), gpiod_direction_output(9), gpiod_enable_hw_timestamp_ns(9), gpiod_disable_hw_timestamp_ns(9), gpiod_set_config(9), gpiod_set_debounce(9), gpiod_set_transitory(9), gpiod_is_active_low(9), gpiod_toggle_active_low(9)
• gpiod_get_raw_value(9), gpiod_get_value(9), gpiod_get_raw_array_value(9), gpiod_get_array_value(9), gpiod_set_raw_value(9), gpiod_set_value_nocheck(9), gpiod_set_value(9), gpiod_set_raw_array_value(9), gpiod_set_array_value(9), gpiod_cansleep(9), gpiod_set_consumer_name(9), gpiod_is_shared(9), gpiod_to_irq(9), gpiochip_lock_as_irq(9), gpiochip_unlock_as_irq(9), gpiod_get_raw_value_cansleep(9), gpiod_get_value_cansleep(9), gpiod_get_raw_array_value_cansleep(9), gpiod_set_raw_value_cansleep(9), gpiod_set_value_cansleep(9), gpiod_set_raw_array_value_cansleep(9), gpiod_add_lookup_tables(9), gpiod_set_array_value_cansleep(9), gpiod_add_lookup_table(9), gpiod_remove_lookup_table(9)
• fwnode_gpiod_get_index(9), gpiod_count(9), gpiod_get(9), gpiod_get_optional(9), gpiod_configure_flags(9), gpiod_get_index(9), gpiod_get_index_optional(9), gpiod_hog(9), gpiochip_free_hogs(9), gpiod_get_array(9), gpiod_get_array_optional(9), gpiod_put(9), gpiod_put_array(9)

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Catch u later, bestie — this was gpiod_get_ar...lue_cansleep(9) from the Kernel API Manual, straight outta ./drivers/gpio, dated October 2026 💖✨