dmub_srv_wait_for_idle(9)

💅 dmub_srv_wait_for_idle — the "u up? pls be done" of kernel API manuals ✨

okay so bestie, welcome to the Kernel API Manual 🌸 — this is the page for dmub_srv_wait_for_idle, and honestly it's giving "waiting for ur friend to finish getting ready" energy. let's get into it 🎀

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🌈 NAME

dmub_srv_wait_for_idle — literally just waits for the DMUB to be idle 💤✨

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🦋 SYNOPSIS

enum dmub_status dmub_srv_wait_for_idle (struct dmub_srv *dmub ,
       uint32_t timeout_us );

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🎀 ARGUMENTS

• dmub — the dmub service 💖 like, the whole little service guy you're talking to
• timeout_us — the maximum number of microseconds to wait ⏳ that's ur patience budget, bestie, use it wisely

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✨ DESCRIPTION

Waits until the DMUB buffer is empty and all commands have finished processing. 👑 no cap, it just sits there vibing until everything's done.

The maximum wait time is given in microseconds to prevent spinning forever 🔥 — because we are not about that infinite-loop life, that's toxic fr fr 💀

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💜 RETURN

• DMUB_STATUS_OK — success 🎉 slay, it worked, buffer's empty, we're free
• DMUB_STATUS_TIMEOUT — wait for buffer to flush timed out 😭 she took too long, the timeout_us ran out
• DMUB_STATUS_INVALID — unspecified error 🙈 like, something went wrong and honestly nobody's saying what

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💅 SEE ALSO

Kernel file ./drivers/gpu/drm/amd/display/dmub/dmub_srv.h — that's where the whole friend group lives 🫶

DMUB interface and operation(9), struct dmub_region(9), struct dmub_window(9), struct dmub_fb(9), struct dmub_srv_region_params(9), struct dmub_srv_fw_meta_info_params(9), struct dmub_srv_region_info(9), struct dmub_srv_memory_params(9), struct dmub_srv_fb_info(9), struct dmub_soc_fb_info(9), struct dmub_diagnostic_data(9), struct dmub_preos_info(9), struct dmub_srv_base_funcs(9), struct dmub_srv_hw_funcs(9), struct dmub_srv_create_params(9), struct dmub_srv(9), struct dmub_notification(9), dmub_srv_create(9), dmub_srv_destroy(9), dmub_srv_calc_region_info(9), dmub_srv_has_hw_support(9), dmub_srv_is_hw_init(9), dmub_srv_hw_init(9), dmub_srv_hw_reset(9), dmub_srv_fb_cmd_queue(9), dmub_srv_fb_cmd_execute(9), dmub_srv_wait_for_hw_pwr_up(9), dmub_srv_wait_for_auto_load(9), dmub_srv_wait_for_phy_init(9), dmub_srv_wait_for_pending(9), dmub_srv_send_gpint_command(9), dmub_srv_get_gpint_response(9), dmub_srv_get_gpint_dataout(9), dmub_srv_flush_buffer_mem(9), dmub_srv_get_fw_boot_status(9), dmub_srv_send_inbox0_cmd(9), dmub_srv_wait_for_inbox0_ack(9), dmub_srv_subvp_save_surf_addr(9), dmub_srv_set_power_state(9), dmub_srv_reg_cmd_execute(9), dmub_srv_cmd_get_response(9), dmub_srv_sync_inboxes(9), dmub_srv_wait_for_inbox_free(9), dmub_srv_update_inbox_status(9), dmub_srv_get_preos_info(9), dmub_srv_get_fw_meta_info_from_raw_fw(9)

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ngl bestie, this whole page lives in ./drivers/gpu/drm/amd/display/... and it was stamped October 2026 💖 stay gorgeous, go wait for something to be idle 🧚‍♀️✨🍓