PLATFORM POWER MANAGEMENT(9)

💖 Platform power management

okay so bestie, welcome to the Kernel API Manual entry on platform power management — this is the system-wide vibe, the whole-platform glow-down where everything dips into a low power state together ✨

🌸 DESCRIPTION

In system-wide power management the entire platform goes into a low power state at the same time — think idle, or suspend to RAM — and the device gets configured as a wakeup source for the entire platform. The way that works is that it's usually triggered by userspace activity, like the user presses the suspend button, or a power management daemon decides "okay we're putting this whole platform in low power mode now" 💅

And when that happens? The device's behavior in this mode is dictated by the wake-on-WLAN configuration. Periodt. That's the whole thing.

The terms used for the device's behavior are as follows:

• D0 — the device is fully powered and the host is awake 🌞
• D3 — the device is in low power mode and only reacts to specific events (e.g. magic-packet received or scan results found) 💤

⚠️ these terms reflect the power modes in the firmware and they are not to be confused with the physical device power state. iykyk, but like — fr fr, keep them separate 🫶

✨ SEE ALSO

like the whole friend group, no cap 👑

• Kernel file ./drivers/net/wireless/intel/iwlwifi/iwl-trans.h
• Transport layer - what is it ?(9)
• Life cycle of the transport layer(9)
• enum CMD_MODE(9)
• struct iwl_device_cmd(9)
• struct iwl_device_tx_cmd(9)
• enum iwl_hcmd_dataflag(9)
• struct iwl_host_cmd(9)
• enum iwl_trans_status(9)
• struct iwl_dump_sanitize_ops(9)
• struct iwl_trans_config(9)
• struct iwl_trans_rxq_dma_data(9)
• struct iwl_pnvm_image(9)
• enum iwl_trans_state(9)
• enum iwl_ini_cfg_state(9)
• struct iwl_dram_data(9)
• struct iwl_dram_regions(9)
• struct iwl_fw_mon(9)
• struct iwl_self_init_dram(9)
• struct iwl_imr_data(9)
• struct iwl_pc_data(9)
• struct iwl_trans_debug(9)
• struct iwl_trans_info(9)
• struct iwl_trans(9)
• iwl_trans_resched_with_nic_access(9)

okay that's the page!! bye bestie, stay powered 💜✨

🎀 this little cutie came from ./drivers/net/wireless/intel/i... and it's dated October 2026 — slay, bookmark it, love you, mwah 🎀