dmub_srv_set_power_state(9)

💅 dmub_srv_set_power_state(9) — the Kernel API Manual moment

okay so bestie, welcome to the dmub_srv_set_power_state(9) page from the Kernel API Manual ✨ this one's short and sweet and honestly it's giving "one job, does it well" energy 🎀

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🌸 NAME 🌸

dmub_srv_set_power_state — literally just tracking the DC power state in dmub_srv, that's the whole vibe 🫶

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✨ SYNOPSIS ✨

void dmub_srv_set_power_state (struct dmub_srv *dmub , enum
       dmub_srv_power_state_type dmub_srv_power_state );

no cap, that's the whole signature 💅

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🦋 ARGUMENTS 🦋

• dmub — the dmub service, our main character 👑
• dmub_srv_power_state — okay so the original page literally says -- undescribed -- here 😭 not me exposing the docs like this, but fr fr that's what it says, so I'm not gonna invent a description for you. it's a enum dmub_srv_power_state_type, and that's all we're given 🙈

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💖 DESCRIPTION 💖

So what it actually does: it stores the DC power state in dmub_srv. That's it. Lowkey iconic for how simple it is 🌈

But here's the important bit — the vibe check 🔥: if dmub_srv is in D3, then don't send messages to DMUB. That's the actual rule, bestie, do not come for me if you skip it 💀

real talk: D3 means don't be messaging DMUB, periodt.

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⭐ RETURN ⭐

void — it returns nothing, she simply does the thing and leaves 🧚💜

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🎀 SEE ALSO 🎀

okay this list is long long, so buckle up buttercup, we're going through all of it 🌸

• Kernel file ./drivers/gpu/drm/amd/display/dmub/dmub_srv.h
• 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_wait_for_idle(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_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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and that's the page, bestie 🫶 this lil cutie came from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — slay, go forth and track those power states responsibly 💜✨