omap_iommu_runtime_suspend(9)

💖 omap_iommu_runtime_suspend(9) 💖

okay bestie, welcome to the Kernel API Manual entry for omap_iommu_runtime_suspend(9) — yes, the manual name is Kernel API Manual, and this page is all about disabling an iommu device. 🎀

🌸 NAME 🌸

omap_iommu_runtime_suspend — disable an iommu device

✨ SYNOPSIS ✨

int omap_iommu_runtime_suspend (struct device *dev );

🎀 ARGUMENTS 🎀

• dev — iommu device. That's the iommu device in question, bestie. 💅

🦋 DESCRIPTION 🦋

okay so this function is the whole “turn it off” routine for an IOMMU device. It performs all that is necessary to disable one — either during final detachment from a client device, or during system/runtime suspend of the device. ✨

It includes programming all the appropriate IOMMU registers, managing the associated omap_hwmod's state, and handling the device's reset line. It also saves the context of any locked TLBs if suspending. No cap, it's doing the full send. 💖

💜 SEE ALSO 💜

okay bestie, here's the whole friend group:

• Kernel file ./drivers/iommu/omap-iommu.c — plus to_omap_domain(9)
• omap_iommu_save_ctx(9)
• omap_iommu_restore_ctx(9)
• load_iotlb_entry(9)
• flush_iotlb_page(9)
• flush_iotlb_all(9)
• omap_iopgtable_store_entry(9)
• iopgtable_lookup_entry(9)
• iopgtable_clear_entry(9)
• omap_iommu_attach(9)
• omap_iommu_detach(9)
• omap_iommu_domain_deactivate(9)
• omap_iommu_domain_activate(9)
• omap_iommu_runtime_resume(9)
• omap_iommu_prepare(9)

that's the page, bestie. source/version: ./drivers/iommu — date: October 2026 — page: omap_iommu_runtime_suspend(9). mwah 💋🫶