pinmux_free_gpio(9)

✨ NAME ✨

okay so bestie, this is pinmux_free_gpio(9) from the Kernel API Manual — and it does exactly one iconic thing: release a pin from GPIO muxing. That's the whole assignment, no cap 💅.

🛠️ SYNOPSIS 🛠️

the signature is literally this, keep it exact:

       void pinmux_free_gpio (struct pinctrl_dev *pctldev , unsigned int pin ,
       struct pinctrl_gpio_range *range );

🌸 ARGUMENTS 🌸

• pctldev — the pin controller device for the pin. main character device energy, honestly 🎀.
• pin — the affected currently GPIO-muxed in pin, bestie. that's the one getting the release treatment 💖.
• range — the applicable GPIO range. gotta know the range, iykyk 🌈.

👀 SEE ALSO 👀

this page points at the kernel file ./drivers/pinctrl/pinmux.c, and these related functions are the whole friend group fr fr:

• pinmux_can_be_used_for_gpio(9)
• pin_request(9)
• pin_free(9)
• pinmux_request_gpio(9)
• pinmux_gpio_direction(9)
• pinmux_generic_get_function_count(9)
• pinmux_generic_get_function_name(9)
• pinmux_generic_get_function_groups(9)
• pinmux_generic_get_function(9)
• pinmux_generic_function_is_gpio(9)
• pinmux_generic_add_function(9)
• pinmux_generic_add_pinfunction(9)
• pinmux_generic_remove_function(9)
• pinmux_generic_free_functions(9)

mwah 💋 — the footer vibes say source/version ./drivers/pinctrl, dated October 2026. go off bestie, and free that pin 🫶✨