pwrdm_has_hdwr_sar(9)

💖 pwrdm_has_hdwr_sar(9) — a Kernel API Manual moment 💖

okay bestie, welcome to the Kernel API Manual, where today's main character is a tiny little bool-returning function that just wants to tell you if your powerdomain is cool enough for hardware save-and-restore 🦋

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✨ NAME ✨

pwrdm_has_hdwr_sar — the vibe check that tells you whether a powerdomain supports hardware SAR 👑

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🌸 SYNOPSIS 🌸

bool pwrdm_has_hdwr_sar (struct powerdomain *pwrdm );

like, that's it. that's the whole call. one pointer in, one bool out, no drama 💅

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🎀 ARGUMENTS 🎀

• pwrdm — a struct powerdomain *, aka the powerdomain you're asking about. literally just pass the pointer, she's not complicated 🫶

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⭐ DESCRIPTION ⭐

okay so here's the whole tea ☕ this one returns 1 if the powerdomain pwrdm supports hardware save-and-restore for some devices, or 0 if it does not. that's the entire personality. no side quests, no hidden state, just a yes-or-no glow-up check ✨

ngl it's giving "small function, big responsibility" energy — but fr fr, it only reports what the powerdomain supports, nothing more 💀

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🌈 SEE ALSO 🌈

bestie the friend group is huge, buckle up 🧚

• Kernel file ./arch/arm/mach-omap2/powerdomain.c
• _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_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_get_valid_lp_state(9)
• omap_set_pwrdm_state(9)
• pwrdm_save_context(9)
• pwrdm_restore_context(9)

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and that's the whole page, bestie 🍓 she lives in ./arch/arm/mach-omap2, the docs are dated October 2026, and the manual is pwrdm_has_hdwr_sar(9) — slay, periodt, go read the rest of the powerdomain lore 💜