STRUCT CLKDM_OPS(9)

✨ struct clkdm_ops(9) ✨

okay so this is from the Kernel API Manual, and bestie, it's literally the blueprint for arch-specific function implementations — like, the plug-in pack for clockdomains, iykyk 💅

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🌸 NAME 🌸

struct clkdm_ops — Arch specific function implementations 🎀

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🦋 SYNOPSIS 🦋

the whole squad, defined like this, no cap:

struct clkdm_ops {
    int (*clkdm_add_wkdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_del_wkdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_read_wkdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_clear_all_wkdeps)(struct clockdomain *clkdm);
    int (*clkdm_add_sleepdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_del_sleepdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_read_sleepdep)(struct clockdomain *clkdm1, struct clockdomain *clkdm2);
    int (*clkdm_clear_all_sleepdeps)(struct clockdomain *clkdm);
    int (*clkdm_sleep)(struct clockdomain *clkdm);
    int (*clkdm_wakeup)(struct clockdomain *clkdm);
    void (*clkdm_allow_idle)(struct clockdomain *clkdm);
    void (*clkdm_deny_idle)(struct clockdomain *clkdm);
    int (*clkdm_clk_enable)(struct clockdomain *clkdm);
    int (*clkdm_clk_disable)(struct clockdomain *clkdm);
    int (*clkdm_save_context)(struct clockdomain *clkdm);
    int (*clkdm_restore_context)(struct clockdomain *clkdm);
 };

Members 🫶

• clkdm_add_wkdep — adds a wakeup dependency between clk domains ⭐ lowkey the friendliest one here
• clkdm_del_wkdep — deletes a wakeup dependency between clk domains ✂️ breaking up is hard to do
• clkdm_read_wkdep — reads the wakeup dependency state between clk domains 👀 just checking in on the vibes
• clkdm_clear_all_wkdeps — removes all wakeup dependencies from the clk domain 🧹 clean slate energy
• clkdm_add_sleepdep — adds a sleep dependency between clk domains 😴 so they nap together, cute
• clkdm_del_sleepdep — deletes a sleep dependency between clk domains 💤 no more shared nap time
• clkdm_read_sleepdep — reads the sleep dependency state between clk domains 🔍
• clkdm_clear_all_sleepdeps — removes all sleep dependencies from the clk domain 🫧 whole nap schedule wiped
• clkdm_sleep — forces a clockdomain to sleep 🛌 like, forced, not "whenever you feel like it"
• clkdm_wakeup — forces a clockdomain to wakeup ⏰ rise and grind
• clkdm_allow_idle — enables hw supervised idle transitions for the clock domain 🔥 hands the napping over to the hardware
• clkdm_deny_idle — disables hw supervised idle transitions for the clock domain 🙅‍♀️ hardware, you're not the boss of this nap
• clkdm_clk_enable — puts the clkdm in the right state for a clock enable ✅
• clkdm_clk_disable — puts the clkdm in the right state for a clock disable ❌
• clkdm_save_context — saves the current clkdm context 💾 screenshot the vibes
• clkdm_restore_context — restores the clkdm context 📸 camera roll, restored

ngl, every single one of these returns int except clkdm_allow_idle and clkdm_deny_idle, which return void. okay that's not in the page as written, but it is right there in the synopsis so go look at it 💀 anyway.

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👑 SEE ALSO 👑

go read these next, bestie, they're in Kernel file ./arch/arm/mach-omap2/clockdomain.h:

• struct clkdm_autodep(9)
• struct clkdm_dep(9)
• struct clockdomain(9)

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that's the whole page! 🍓 fr fr, it's giving "tiny struct, big responsibilities." mwah 💖

bye bestie!! ✨🦋💜

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from ./arch/arm/mach-omap2 · October 2026 · struct clkdm_ops(9) — drink some water, then go set those wakeup deps 🎀