STRUCT DMUB_CMD_PANEL_CNTL_DATA(9)

✨ struct dmub_cmd_panel_cntl_data(9) — panel control data, and yes we're reading kernel headers for fun now ✨

Okay bestie, so this one's from the Kernel API Manual, section 9, and it's a struct page. Not a huge dramatic one, but we're gonna give it the full treatment anyway because every kernel struct deserves main character energy. 🫶

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🌸 NAME 🌸

struct dmub_cmd_panel_cntl_data — literally "Panel control data." That's the whole description. Short queen. 💅

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🦋 SYNOPSIS 🦋

Okay so here's the whole struct, laid out exactly as the manpage gives it, no notes, no edits:

struct dmub_cmd_panel_cntl_data {
    uint32_t pwrseq_inst;
    uint32_t current_backlight;
    uint32_t bl_pwm_cntl;
    uint32_t bl_pwm_period_cntl;
    uint32_t bl_pwm_ref_div1;
    uint8_t is_backlight_on : 1;
    uint8_t is_powered_on : 1;
    uint8_t padding[3];
    uint32_t bl_pwm_ref_div2;
    uint8_t reserved[4];
 };

Like look at her. A whole little bundle of uint32_ts, two lonely one-bit fields (is_backlight_on and is_powered_on, both : 1, both iconic ✨), a padding[3], and a reserved[4] resting at the end like a nap. 🔥

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🎀 Members 🎀

So here's the thing — the Members section on this page is empty. Bestie, there is literally nothing under it. No field-by-field breakdown, no little tea about what each one does. The names and types in the struct above are all we've got, and that's the vibe check result: pwrseq_inst, current_backlight, bl_pwm_cntl, bl_pwm_period_cntl, bl_pwm_ref_div1, is_backlight_on, is_powered_on, padding[3], bl_pwm_ref_div2, reserved[4]. That's it. Don't come for me, I'm reporting faithfully 🙈

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🔥 SEE ALSO 🔥

Buckle up, because this section is long — it's basically the dmub header's whole extended friend group. First up, the source file itself, then the entire guest list 👑

• Kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
• 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_idle_opt_set_dc_power_state_data(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_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)

Like, that's the whole group chat. enum dmub_cmd_panel_cntl_type(9) and struct dmub_rb_cmd_panel_cntl(9) are obviously the siblings closest to this page (iykyk), and dmub_cmd.h is the house everyone lives in. 🏠💜

Fair warning bestie: the Members section really is empty on this one, so if you were hoping for field-by-field lore, the manpage simply did not serve it. Everything factual lives in the SYNOPSIS struct above. No cap.

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That's the whole page! 🎀 Sourced from ./drivers/gpu/drm/amd/display/..., dated October 2026, and it's the struct dmub...el_cntl_data(9) page, Kernel API Manual, section 9. Slay, go read your headers, ily 💖✨