ENUM DMUB_CMD_CAB_TYPE(9)

💅 enum dmub_cmd_cab_type(9) — like, the CAB command data enum, bestie

okay so real talk: this page lives in the Kernel API Manual (that's the manual name, iykyk), and it's a little baby stub page about one enum. No cap, it's short. Let's get into it 🫶

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✨ NAME ✨

enum dmub_cmd_cab_type — CAB command data. That's it, that's the whole name section. Short and iconic 💅

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🌸 SYNOPSIS 🌸

Here's the enum in all its glory, copied exactly because I do NOT play with code:

enum dmub_cmd_cab_type {
    DMUB_CMD__CAB_NO_IDLE_OPTIMIZATION ,
    DMUB_CMD__CAB_NO_DCN_REQ ,
    DMUB_CMD__CAB_DCN_SS_FIT_IN_CAB ,
    DMUB_CMD__CAB_DCN_SS_NOT_FIT_IN_CAB

};

Periodt. Four members, zero elaboration. 🎀

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🦋 Constants 🦋

So here's the thing bestie — the docs for every single one of these literally just say -- undescribed --. Not me making that up, that's what's in the source. It's giving "placeholder text and vibes." Anyway:

• DMUB_CMD__CAB_NO_IDLE_OPTIMIZATION — the docs say -- undescribed -- 🙈 (yes really, that's the whole description)
• DMUB_CMD__CAB_NO_DCN_REQ — also -- undescribed -- 💀
• DMUB_CMD__CAB_DCN_SS_FIT_IN_CAB — -- undescribed -- again, we stay unbothered 🌸
• DMUB_CMD__CAB_DCN_SS_NOT_FIT_IN_CAB — and -- undescribed -- one more time, slay ⭐

fr fr, if you need to know what these actually do, go read the header — this page is not the one. 🧚

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👑 SEE ALSO 👑

Okay this is the main character section of the whole page, because the list is LONG. Everything here comes from the kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h, and these are all its neighbours:

• 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)
• 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_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)

That's the whole squad, nobody left behind 💖

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✨ cute little sign-off ✨

so yeah, this page's source lives at ./drivers/gpu/drm/amd/display/... (that's the truncated path the manpage footer gives us, no I'm not gatekeeping, it just literally ends in ... 😭) and it's dated October 2026. Slay, see you in the next man 9, bestie 💜🦋