skl_int3472...io_resources(9)

✨ skl_int3472...io_resources(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one is a whole vibe — it's the page for skl_int3472_handle_gpio_resources, and honestly it's giving "small function, big responsibilities" 🎀

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💖 NAME 💖

skl_int3472_handle_gpio_resources — maps PMIC resources to the consuming sensor 🫶

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🌸 SYNOPSIS 🌸

int skl_int3472_handle_gpio_resources (struct acpi_resource *ares , void
*data );

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🦋 ARGUMENTS 🦋

• ares — a pointer to a struct acpi_resource ✨ like, that's the resource we're looking at rn
• data — a pointer to a struct int3472_discrete_device 💅 the device context, our main character

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👑 DESCRIPTION 👑

so this function handles GPIO resources that are against an INT3472 ACPI device — and the way it does that is by checking the value of the corresponding _DSM entry 🔥 It returns a 32bit int, and the lowest byte is the part that matters, because that's the function of the GPIO pin:

• 0x00 — Reset
• 0x01 — Power down
• 0x02 — Strobe
• 0x0b — Power enable
• 0x0c — Clock enable
• 0x0d — Privacy LED
• 0x10 — DOVDD (digital I/O voltage)
• 0x13 — Hotplug detect

ngl though, there are some known platform specific quirks where that does not quite hold up 😭 for example, there's a case where a pin with type 0x01 (Power down) is mapped to a sensor pin that performs a reset function, and also entries in _CRS and _DSM that do not actually correspond to a physical connection 🙈 These get handled by the mapping sub-functions, so don't stress — it's handled.

and the GPIOs themselves? they'll either be mapped directly to the sensor device, or else used to create clocks and regulators via the usual frameworks 💫 either way, slay.

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⭐ RETURN ⭐

• 1 — continue the loop without adding a copy of the resource to the list passed to acpi_dev_get_resources
• 0 — continue the loop after adding a copy of the resource to the list passed to acpi_dev_get_resources
• -errno — error, break loop 💀

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/platform/x86/intel/int3472/discrete.c
• struct int3472_gpio_map(9)

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and that's the whole page bestie, no cap 🧚 from ./drivers/platform/x86/intel/i... — the October 2026 edition, with all the copyright and license vibes living in that source path. mwah 💋 periodt 💜