_pwrdm_register(9)

💅 _pwrdm_register(9) — like, the Kernel API Manual page you actually wanna read 🎀

okay so bestie, buckle up 💖 this one is from the Kernel API Manual, section 9, and it's genuinely not that deep — it's one little function that puts a powerdomain on a list. slay. let's go ✨

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🌸 NAME 🌸

_pwrdm_register — register a powerdomain 👑

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🦋 SYNOPSIS 🦋

int _pwrdm_register (struct powerdomain *pwrdm );

that's it. that's the whole vibe check. one argument, returns an int, iconic behavior honestly 💅

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🎀 ARGUMENTS 🎀

• pwrdm — a struct powerdomain *, aka the powerdomain you're about to register. it's giving "here's the pointer, do ur thing" 🫶

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✨ DESCRIPTION ✨

so what does it do? it adds a powerdomain to the internal powerdomain list. literally that's the whole job. main character energy for a linked list 🌈

and the returns? let's break it down fr fr:

• -EINVAL — you handed it a null pointer 😭 like bestie. no. absolutely not.
• -EEXIST — a powerdomain is already registered under the provided name. someone got there first 💀 no duplicates allowed, periodt.
• 0 — success!! we ate 🔥👑

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💜 SEE ALSO 💜

the kernel file in question lives at ./arch/arm/mach-omap2/powerdomain.c — that's the source of truth, go look 🧚

and the whole friend group (these are all (9) pages, no cap):

• _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_lookup(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)

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okay that's the whole page, you're so welcome 🫶 this cutie dropped from ./arch/arm/mach-omap2, dated October 2026, and it's filed under _pwrdm_register(9) — go forth and register responsibly, bestie 💖🎀🦋