STRUCT DMUB_IDLE_OPT_SET_DC_POWER_STATE_DATA(9)

💅 struct dmub_idle_opt_set_dc_power_state_data(9) — Kernel API Manual ✨

okay so bestie, this is a Kernel API manual page from the 9 section (that's the kernel devs' club 🎀) and it's all about one very specific little struct. no cap, it's tiny. it's iconic. let's get into it 🦋

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🌸 NAME 🌸

struct dmub_idle_opt_set_dc_power_state_data — literally the data that gets passed to FW (that's firmware, iykyk 💅) inside a DMUB_CMD__IDLE_OPT_SET_DC_POWER_STATE command.

that's it. that's the whole job. a little payload for a little command. main character energy for sure ✨

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🎀 SYNOPSIS 🎀

here's the whole vibe, verbatim, don't touch:

struct dmub_idle_opt_set_dc_power_state_data {
    uint8_t power_state;
    uint8_t pad[3];
 };

look at it. two members. one of them is padding. it's giving "structured and padded, because alignment is real" 🫶

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💜 Members 💜

so this section exists on the page — the heading is right there in the original — but the list underneath it is empty, bestie. no members documented here 🙈 the actual fields are the ones you can see up in SYNOPSIS, so don't come for me, I'm just reporting what the page says fr fr.

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🧚 SEE ALSO 🧚

okay this is the part where the page name-drops literally everyone in the neighborhood. huge guest list. all of these are (9) manual pages, and we are not skipping a single one 😤👑

• union dmub_addr(9)
• struct dmub_cursor_offload_pipe_data_dcn30_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn401_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn60_v1(9)
• struct dmub_cursor_offload_pipe_data_v1(9)
• struct dmub_cursor_offload_payload_data_v1(9)
• struct dmub_cursor_offload_stream_v1(9)
• struct dmub_cursor_offload_v1(9)
• union dmub_fw_meta_feature_bits(9)
• struct dmub_fw_meta_info(9)
• union dmub_fw_meta(9)
• struct dmcub_trace_buf_entry(9)
• union dmub_fw_boot_status(9)
• enum dmub_fw_boot_status_bit(9)
• enum dmub_cursor_offload_comand_type(9)
• union dmub_fw_boot_options(9)
• enum dmub_shared_state_feature_id(9)
• struct dmub_shared_state_ips_fw(9)
• struct dmub_shared_state_ips_driver(9)
• struct dmub_shared_state_cursor_offload_v1(9)
• struct dmub_shared_state_feature_block(9)
• union dmub_gpint_data_register(9)
• enum dmub_out_cmd_type(9)
• struct dmub_cmd_header(9)
• struct dmub_rb_cmd_common(9)
• struct dmub_cmd_PLAT_54186_wa(9)
• struct dmub_rb_cmd_PLAT_54186_wa(9)
• enum dmub_cmd_mall_type(9)
• struct dmub_rb_cmd_mall(9)
• enum dmub_cmd_cab_type(9)
• struct dmub_rb_cmd_cab_for_ss(9)
• enum dmub_fams2_allow_delay_check_mode(9)
• enum dmub_cmd_idle_opt_type(9)
• struct dmub_rb_cmd_idle_opt_dcn_restore(9)
• struct dmub_dcn_notify_idle_cntl_data(9)
• struct dmub_rb_cmd_idle_opt_dcn_notify_idle(9)
• enum dmub_idle_opt_dc_power_state(9)
• struct dmub_rb_cmd_idle_opt_set_dc_power_state(9)
• struct dmub_clocks(9)
• enum dmub_cmd_clk_mgr_type(9)
• struct dmub_rb_cmd_clk_mgr_notify_clocks(9)
• struct dmub_cmd_digx_encoder_control_data(9)
• struct dmub_rb_cmd_digx_encoder_control(9)
• struct dmub_cmd_set_pixel_clock_data(9)
• struct dmub_cmd_enable_disp_power_gating_data(9)
• struct dmub_rb_cmd_enable_disp_power_gating(9)
• struct dmub_dig_transmitter_control_data_v1_7(9)
• union dmub_cmd_dig1_transmitter_control_data(9)
• struct dmub_rb_cmd_dig1_transmitter_control(9)
• struct dmub_rb_cmd_domain_control_data(9)
• struct dmub_rb_cmd_domain_control(9)
• struct dmub_rb_cmd_dpphy_init(9)
• enum dp_aux_request_action(9)
• enum aux_return_code_type(9)
• enum aux_channel_type(9)
• struct aux_transaction_parameters(9)
• struct dmub_rb_cmd_hpd_sense_notify(9)
• enum dmub_phy_fsm_state(9)
• enum dmub_abm_ace_curve_type(9)
• enum dmub_abm_histogram_type(9)
• enum dmub_cmd_panel_cntl_type(9)
• struct dmub_cmd_panel_cntl_data(9)
• struct dmub_rb_cmd_panel_cntl(9)
• struct dmub_cmd_cable_id_input(9)
• struct dmub_cmd_cursor_offload_init_data(9)
• struct dmub_rb_cmd_cursor_offload_init(9)
• struct dmub_cmd_cursor_offload_stream_data(9)
• struct dmub_rb_cmd_cursor_offload_stream_cntl(9)
• union dmub_rb_cmd(9)
• union dmub_rb_out_cmd(9)
• struct dmub_rb_init_params(9)
• struct dmub_rb(9)

seventy-something cross-references and every single one of them made the cut 💀 that's the DMUB extended universe, right there. it's giving cinematic universe. it's giving lore 🌈

heads up bestie: the page also points at the kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h — that's where the source of truth lives, so if you're hunting for the actual definitions, that's your destination 🗺️💖

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and that's the whole page!! short, sweet, deeply specific. shoutout to whatever version of this page got generated, sourced from ./drivers/gpu/drm/amd/display/..., dated October 2026, with the footer chirping struct dmub_...r_state_data(9) at us one last time 😭💫 stay hydrated, read your headers, and remember: padding exists for a reason 🍓✨🫶