omap_prcm_re...hain_handler(9)

💖 omap_prcm_register_chain_handler(9) 💖

okay bestie, welcome to the Kernel API Manual — this is the page for omap_prcm_register_chain_handler, and yes the title got truncated with ... in the header, that's just how it is, we don't make the rules ✨

---

🌸 NAME 🌸

omap_prcm_register_chain_handler — sets up the PRCM chained interrupt handler using the parameters you hand it 🎀

---

🦋 SYNOPSIS 🦋

int omap_prcm_register_chain_handler (struct omap_prcm_irq_setup
*irq_setup );

like, that's the whole call. one struct pointer, one int coming back at you. iconic 💅

---

✨ ARGUMENTS ✨

• irq_setup — the hardware data describing the underlying PRM/PRCM. that's it, that's the vibe check. it's the hardware gossip the function needs 🫶

---

💜 DESCRIPTION 💜

okay so here's the tea: this function sets up the PRCM chained interrupt handler on the PRCM IRQ 🔥

it also sets up one generic IRQ chip per PRM interrupt status/enable register pair — like, one chip per pair, no cap, that's just how it goes 🌈

and it returns stuff:

• 0 when everything slays (success 💖)
• -EINVAL if you call it twice, or if you pass invalid arguments — so don't do that 🙈
• -ENOMEM on any other error 😭

lowkey important: calling it twice is a -EINVAL situation, so pls don't double-call. the kernel will not be amused 💀

---

🎀 SEE ALSO 🎀

• Kernel file ./arch/arm/mach-omap2/prm_common.c
• omap_prcm_event_to_irq(9)
• omap_prcm_irq_cleanup(9)
• prm_was_any_context_lost_old(9)
• prm_clear_context_loss_flags_old(9)
• omap_prm_assert_hardreset(9)
• omap_prm_deassert_hardreset(9)
• omap_prm_is_hardreset_asserted(9)
• omap_prm_reset_system(9)
• omap_prm_clear_mod_irqs(9)
• omap_prm_vp_check_txdone(9)
• omap_prm_vp_clear_txdone(9)
• prm_register(9)
• prm_unregister(9)
• omap2_prm_base_init(9)
• omap_prcm_init(9)

like a whole friend group of related manpages, tbh — go read them, iykyk 👑

---

and that's the page bestie!! 💅✨ source/version vibes live at ./arch/arm/mach-omap2, dated October 2026, and the page itself goes by omap_prcm_re...hain_handler(9) — yes, still truncated, we stan a mysterious queen 🧚‍♀️💜 mwah, bye!! 🍓