pwrdm_lookup(9)

💅 pwrdm_lookup — the kernel API manual, bestie edition ✨

okay so this is the pwrdm_lookup(9) page from the Kernel API Manual, and honestly? it's giving "small function, big responsibilities." it's short, it's sweet, and it's gonna save you so much time. 🎀

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✨ NAME ✨

pwrdm_lookup — look up a powerdomain by name, return a pointer 🫶

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🌸 SYNOPSIS 🌸

struct powerdomain * pwrdm_lookup (const char *name );

like, that's the whole vibe. struct powerdomain * in, name as a const char *, and off you go. ✨

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🦋 ARGUMENTS 🦋

• name — name of powerdomain. literally just the name, bestie. that's the whole argument. no hidden extras, no surprise params, we love a low-maintenance signature 💅

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💖 DESCRIPTION 💖

Find a registered powerdomain by its name name. 🎀

So picture it: you've got a name, you want the actual struct powerdomain that answers to that name, and you call this function. It goes looking. And then:

• if it finds one → it returns a pointer to that struct powerdomain 🔥
• if it doesn't → it returns NULL, no cap 😭

heads up bestie: that NULL return is a real possibility, so like… check it before you dereference, okay? protect your kernel, protect your peace 🫶

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👑 SEE ALSO 👑

okay this is the part where the manpage just flexes on us with the biggest friend group ever. every single one of these is in the Kernel file ./arch/arm/mach-omap2/powerdomain.c, and we are NOT skipping a single one, periodt:

• _pwrdm_register(9)
• _pwrdm_save_clkdm_state_and_activate(9)
• _pwrdm_restore_clkdm_state(9)
• pwrdm_register_platform_funcs(9)
• pwrdm_register_pwrdms(9)
• pwrdm_complete_init(9)
• pwrdm_lock(9)
• pwrdm_unlock(9)
• pwrdm_for_each(9)
• pwrdm_add_clkdm(9)
• pwrdm_get_mem_bank_count(9)
• pwrdm_set_next_pwrst(9)
• pwrdm_read_next_pwrst(9)
• pwrdm_read_pwrst(9)
• pwrdm_read_prev_pwrst(9)
• pwrdm_set_logic_retst(9)
• pwrdm_set_mem_onst(9)
• pwrdm_set_mem_retst(9)
• pwrdm_read_logic_pwrst(9)
• pwrdm_read_prev_logic_pwrst(9)
• pwrdm_read_logic_retst(9)
• pwrdm_read_mem_pwrst(9)
• pwrdm_read_prev_mem_pwrst(9)
• pwrdm_read_mem_retst(9)
• pwrdm_clear_all_prev_pwrst(9)
• pwrdm_enable_hdwr_sar(9)
• pwrdm_disable_hdwr_sar(9)
• pwrdm_has_hdwr_sar(9)
• pwrdm_get_valid_lp_state(9)
• omap_set_pwrdm_state(9)
• pwrdm_save_context(9)
• pwrdm_restore_context(9)

iykyk 😌 the powerdomain cinematic universe is REAL and this is the full cast list.

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and that's the page!! 🧚 it lives in ./arch/arm/mach-omap2 (yes, the whole directory is the source, slay), and this particular glow-up of the manual is dated October 2026, officially filed as pwrdm_lookup(9) — section 9, kernel API, main character energy only. bye bestie, go look up some powerdomains responsibly 💜⭐🍓