omap4_pwrdm..._logic_pwrst(9)

💅 omap4_pwrdm..._logic_pwrst(9) 💅

okay so this is a page straight out of the Kernel API Manual bestie, and honestly? it's giving niche-but-iconic. we're in the OMAP4 power domain trenches today 🫶

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✨ NAME ✨

omap4_pwrdm_read_prev_logic_pwrst — read the previous logic powerstate 🔥 (yes that's the whole job, and she does it well)

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🌸 SYNOPSIS 🌸

int omap4_pwrdm_read_prev_logic_pwrst (struct powerdomain *pwrdm );

literally the whole signature, no notes 💅

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🎀 ARGUMENTS 🎀

• pwrdm — a struct powerdomain *, like, the powerdomain you want to read the state for. that's the one. hand her over 💖

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🦋 DESCRIPTION 🦋

so here's the tea ☕ — this function reads the previous logic powerstate for a powerdomain. but bestie, she can't just look it up, she has to do detective work first 👑

the way that she works: she first checks the previous powerstate for the domain. that's step one, no skipping.

• if that previous state was OFF, then the logic has been lost 😭 rip
• if the previous state was RETENTION, she goes and reads the setting for the next retention logic state to see the actual value 👀 (iykyk, that's the whole trick)
• in every other case, the logic is retained ✨

and she returns either PWRDM_POWER_OFF or PWRDM_POWER_RET, depending on whether the logic was retained or not. main character return value energy, fr fr 🌈

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💀 SEE ALSO 💀

the kernel file we're living in:

./arch/arm/mach-omap2/prm44xx.c

and her whole friend group (they're all linked, they all say hi) 🫶

• omap44xx_prm_read_pending_irqs(9)
• omap44xx_prm_ocp_barrier(9)
• omap44xx_prm_save_and_clear_irqen(9)
• omap44xx_prm_restore_irqen(9)
• omap44xx_prm_reconfigure_io_chain(9)
• omap44xx_prm_enable_io_wakeup(9)
• omap44xx_prm_read_reset_sources(9)
• omap44xx_prm_was_any_context_lost_old(9)
• omap44xx_prm_clear_context_loss_flags_old(9)
• omap4_pwrdm_read_prev_mem_pwrst(9)
• omap4_pwrdm_save_context(9)
• omap4_pwrdm_restore_context(9)

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ngl the other pwrdm girlies are the ones who save and restore context — this one just reads the previous logic powerstate. know your role and slay it 💅

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and that's the whole page bestie!! 🌟 brought to you by the fine folks living in ./arch/arm/mach-omap2, dated October 2026, filed under omap4_pwrdm..._logic_pwrst(9) — mwah, stan her, periodt 💖🎀🦋