gpiod_add_lookup_table(9)

💅 gpiod_add_lookup_table(9)

okay so bestie, welcome to the Kernel API Manual 🎀 — this one's a tiny little function with main character energy, and honestly? It's giving "short but crucial." ✨

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🌸 NAME

gpiod_add_lookup_table — the girl who registers GPIO device consumers for you 👑 like, she just shows up, does the paperwork, and suddenly your consumers are on the list. no cap.

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🦋 SYNOPSIS

void gpiod_add_lookup_table (struct gpiod_lookup_table *table );

pretty! returns nothing (void) because she doesn't need to prove anything to anyone 💅

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🍓 ARGUMENTS

• table — the table of consumers you wanna register. that's it. that's the whole vibe check. hand her the table, she puts it in the registry, periodt 🫶

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🌈 SEE ALSO

okay this is the part where I have to list literally everyone she knows, because the kernel is one big group chat and everyone is mutuals. first up, the home turf: the kernel file ./drivers/gpio/gpiolib.c 🏠

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) 🦋

then the device crew: gpio_device_get(9), gpio_device_put(9), gpio_device_to_device(9) — get her, put her, convert her, iconic 💖

and the irq girlies 🔥 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)

the request/free/config trio ate: gpiochip_generic_request(9), gpiochip_generic_free(9), gpiochip_generic_config(9) ⭐ plus the pin range besties gpiochip_add_pingroup_range(9), gpiochip_add_pin_range_with_pins(9), gpiochip_remove_pin_ranges(9), and gpiochip_dup_line_label(9), gpiochip_request_own_desc(9), gpiochip_free_own_desc(9) 🧚

then we got the setting-girlies 🌸 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)

getting and setting values, the whole saga 😭 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) 💀

then 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) — and the sleepy remix 🌙 gpiod_get_raw_value_cansleep(9), gpiod_get_value_cansleep(9), gpiod_get_raw_array_value_cansleep(9), gpiod_get_array_value_cansleep(9), gpiod_set_raw_value_cansleep(9), gpiod_set_value_cansleep(9), gpiod_set_raw_array_value_cansleep(9), gpiod_set_array_value_cansleep(9) 🙈

and the lookups' own inner circle 💜 gpiod_add_lookup_tables(9), gpiod_remove_lookup_table(9) — yes she has a plural twin and a removal counterpart, we stan a family 🌈

last but absolutely not least, the consumer-facing icons 👑 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) 🎀

ngl bestie, that's a long contact list — but every single one of them is real and I would never leave a mutual out 💅

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mwah 💋 that's the whole page. this gem lives in ./drivers/gpio and the docs are dated October 2026 — so go register those consumers, slay, and remember: the table goes in, the table gets registered. periodt. ✨🫶