dpll_pin_get(9)

💖 dpll_pin_get(9) 💖

okay bestie so we're deep in the Kernel API Manual today and this one is the glow-up of pin lookups ✨ it's called dpll_pin_get and it's literally the main character of this whole page, no cap 🎀

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🌸 NAME 🌸

dpll_pin_get — find an existing dpll pin, or create a brand new one if it's not there yet 🦋

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✨ SYNOPSIS ✨

struct dpll_pin * dpll_pin_get (u64 clock_id , u32 pin_idx , struct module *module , const struct dpll_pin_properties *prop , dpll_tracker *tracker );

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🎀 ARGUMENTS 🎀

• clock_id — the clock_id of whoever created this thing, iykyk
• pin_idx — the idx your dev driver handed over
• module — a reference to the registering module
• prop — the dpll pin properties, the whole vibe sheet
• tracker — the tracking object for the reference you just acquired 👑

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💅 DESCRIPTION 💅

So basically: it grabs the existing object of a pin — and that pin is unique for the arguments you passed in, slay — or it creates a new one if it doesn't exist yet. periodt 💖

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🔥 CONTEXT 🔥

Acquires a lock (dpll_lock) — she locks, bestie, ngl that's the whole note 😌

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⭐ RETURN ⭐

• a valid allocated dpll_pin struct pointer if it succeeded 🎉
• ERR_PTR(X) — error 😭

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🌈 SEE ALSO 🌈

Kernel file ./drivers/dpll/dpll_core.c, plus the whole friend group: dpll_device_get(9), dpll_device_put(9), dpll_device_register(9), dpll_device_unregister(9), dpll_pin_put(9), dpll_pin_fwnode_set(9), fwnode_dpll_pin_find(9), dpll_pin_register(9), dpll_pin_unregister(9), dpll_pin_on_pin_register(9), dpll_pin_on_pin_unregister(9), dpll_pin_ref_sync_pair_add(9), dpll_pin_own_dpll_ref_first(9)

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okay that's the whole page bestie 🫶 this little gem lives in ./drivers/dpll and the version is dated October 2026 — iconic, timeless, we stan 💜🧚