ENUM SDCA_TERMINAL_TYPE(9)

🌸 ENUM SDCA_TERMINAL_TYPE 🌸

okay so bestie, this is enum sdca_terminal_type from the Kernel API Manual (section 9, we're fancy), and it's literally just a giant vibe-check list of what a Terminal Entity is allowed to be 💅 no cap.

---

✨ NAME ✨

enum sdca_terminal_type — SDCA Terminal Types 🎀

---

🦋 SYNOPSIS 🦋

enum sdca_terminal_type {
    SDCA_TERM_TYPE_GENERIC ,
    SDCA_TERM_TYPE_ULTRASOUND ,
    SDCA_TERM_TYPE_CAPTURE_DIRECT_PCM_MIC ,
    SDCA_TERM_TYPE_RAW_PDM_MIC ,
    SDCA_TERM_TYPE_SPEECH ,
    SDCA_TERM_TYPE_VOICE ,
    SDCA_TERM_TYPE_SECONDARY_PCM_MIC ,
    SDCA_TERM_TYPE_ACOUSTIC_CONTEXT_AWARENESS ,
    SDCA_TERM_TYPE_DTOD_STREAM ,
    SDCA_TERM_TYPE_REFERENCE_STREAM ,
    SDCA_TERM_TYPE_SENSE_CAPTURE ,
    SDCA_TERM_TYPE_STREAMING_MIC ,
    SDCA_TERM_TYPE_OPTIMIZATION_STREAM ,
    SDCA_TERM_TYPE_PDM_RENDER_STREAM ,
    SDCA_TERM_TYPE_COMPANION_DATA ,
    SDCA_TERM_TYPE_MICROPHONE_TRANSDUCER ,
    SDCA_TERM_TYPE_MICROPHONE_ARRAY_TRANSDUCER ,
    SDCA_TERM_TYPE_PRIMARY_FULL_RANGE_SPEAKER ,
    SDCA_TERM_TYPE_PRIMARY_LFE_SPEAKER ,
    SDCA_TERM_TYPE_PRIMARY_TWEETER_SPEAKER ,
    SDCA_TERM_TYPE_PRIMARY_ULTRASOUND_SPEAKER ,
    SDCA_TERM_TYPE_SECONDARY_FULL_RANGE_SPEAKER ,
    SDCA_TERM_TYPE_SECONDARY_LFE_SPEAKER ,
    SDCA_TERM_TYPE_SECONDARY_TWEETER_SPEAKER ,
    SDCA_TERM_TYPE_SECONDARY_ULTRASOUND_SPEAKER ,
    SDCA_TERM_TYPE_TERTIARY_FULL_RANGE_SPEAKER ,
    SDCA_TERM_TYPE_TERTIARY_LFE_SPEAKER ,
    SDCA_TERM_TYPE_TERTIARY_TWEETER_SPEAKER ,
    SDCA_TERM_TYPE_TERTIARY_ULTRASOUND_SPEAKER ,
    SDCA_TERM_TYPE_SPDIF ,
    SDCA_TERM_TYPE_NDAI_DISPLAY_AUDIO ,
    SDCA_TERM_TYPE_NDAI_USB ,
    SDCA_TERM_TYPE_NDAI_BLUETOOTH_MAIN ,
    SDCA_TERM_TYPE_NDAI_BLUETOOTH_ALTERNATE ,
    SDCA_TERM_TYPE_NDAI_BLUETOOTH_BOTH ,
    SDCA_TERM_TYPE_LINEIN_STEREO ,
    SDCA_TERM_TYPE_LINEIN_FRONT_LR ,
    SDCA_TERM_TYPE_LINEIN_CENTER_LFE ,
    SDCA_TERM_TYPE_LINEIN_SURROUND_LR ,
    SDCA_TERM_TYPE_LINEIN_REAR_LR ,
    SDCA_TERM_TYPE_LINEOUT_STEREO ,
    SDCA_TERM_TYPE_LINEOUT_FRONT_LR ,
    SDCA_TERM_TYPE_LINEOUT_CENTER_LFE ,
    SDCA_TERM_TYPE_LINEOUT_SURROUND_LR ,
    SDCA_TERM_TYPE_LINEOUT_REAR_LR ,
    SDCA_TERM_TYPE_MIC_JACK ,
    SDCA_TERM_TYPE_STEREO_JACK ,
    SDCA_TERM_TYPE_FRONT_LR_JACK ,
    SDCA_TERM_TYPE_CENTER_LFE_JACK ,
    SDCA_TERM_TYPE_SURROUND_LR_JACK ,
    SDCA_TERM_TYPE_REAR_LR_JACK ,
    SDCA_TERM_TYPE_HEADPHONE_JACK ,
    SDCA_TERM_TYPE_HEADSET_JACK ,
    SDCA_TERM_TYPE_SENSE_DATA ,
    SDCA_TERM_TYPE_PRIVACY_SIGNALING ,
    SDCA_TERM_TYPE_PRIVACY_INDICATORS

};

---

💅 Constants 💅

okay so here's the thing — and I need you to sit down for this one 🫶 — literally every single constant in this enum is documented as -- undescribed --. That's it. That's the whole description. All 56 of them. The way the kernel docs just said "no 💖" and moved on. Not me refreshing the page expecting lore 😭. Anyway, here they all are, in original order, each one exactly as undescribed as the last:

• SDCA_TERM_TYPE_GENERIC — -- undescribed --
• SDCA_TERM_TYPE_ULTRASOUND — -- undescribed --
• SDCA_TERM_TYPE_CAPTURE_DIRECT_PCM_MIC — -- undescribed --
• SDCA_TERM_TYPE_RAW_PDM_MIC — -- undescribed --
• SDCA_TERM_TYPE_SPEECH — -- undescribed --
• SDCA_TERM_TYPE_VOICE — -- undescribed --
• SDCA_TERM_TYPE_SECONDARY_PCM_MIC — -- undescribed --
• SDCA_TERM_TYPE_ACOUSTIC_CONTEXT_AWARENESS — -- undescribed --
• SDCA_TERM_TYPE_DTOD_STREAM — -- undescribed --
• SDCA_TERM_TYPE_REFERENCE_STREAM — -- undescribed --
• SDCA_TERM_TYPE_SENSE_CAPTURE — -- undescribed --
• SDCA_TERM_TYPE_STREAMING_MIC — -- undescribed --
• SDCA_TERM_TYPE_OPTIMIZATION_STREAM — -- undescribed --
• SDCA_TERM_TYPE_PDM_RENDER_STREAM — -- undescribed --
• SDCA_TERM_TYPE_COMPANION_DATA — -- undescribed --
• SDCA_TERM_TYPE_MICROPHONE_TRANSDUCER — -- undescribed --
• SDCA_TERM_TYPE_MICROPHONE_ARRAY_TRANSDUCER — -- undescribed --
• SDCA_TERM_TYPE_PRIMARY_FULL_RANGE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_PRIMARY_LFE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_PRIMARY_TWEETER_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_PRIMARY_ULTRASOUND_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_SECONDARY_FULL_RANGE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_SECONDARY_LFE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_SECONDARY_TWEETER_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_SECONDARY_ULTRASOUND_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_TERTIARY_FULL_RANGE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_TERTIARY_LFE_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_TERTIARY_TWEETER_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_TERTIARY_ULTRASOUND_SPEAKER — -- undescribed --
• SDCA_TERM_TYPE_SPDIF — -- undescribed --
• SDCA_TERM_TYPE_NDAI_DISPLAY_AUDIO — -- undescribed --
• SDCA_TERM_TYPE_NDAI_USB — -- undescribed --
• SDCA_TERM_TYPE_NDAI_BLUETOOTH_MAIN — -- undescribed --
• SDCA_TERM_TYPE_NDAI_BLUETOOTH_ALTERNATE — -- undescribed --
• SDCA_TERM_TYPE_NDAI_BLUETOOTH_BOTH — -- undescribed --
• SDCA_TERM_TYPE_LINEIN_STEREO — -- undescribed --
• SDCA_TERM_TYPE_LINEIN_FRONT_LR — -- undescribed --
• SDCA_TERM_TYPE_LINEIN_CENTER_LFE — -- undescribed --
• SDCA_TERM_TYPE_LINEIN_SURROUND_LR — -- undescribed --
• SDCA_TERM_TYPE_LINEIN_REAR_LR — -- undescribed --
• SDCA_TERM_TYPE_LINEOUT_STEREO — -- undescribed --
• SDCA_TERM_TYPE_LINEOUT_FRONT_LR — -- undescribed --
• SDCA_TERM_TYPE_LINEOUT_CENTER_LFE — -- undescribed --
• SDCA_TERM_TYPE_LINEOUT_SURROUND_LR — -- undescribed --
• SDCA_TERM_TYPE_LINEOUT_REAR_LR — -- undescribed --
• SDCA_TERM_TYPE_MIC_JACK — -- undescribed --
• SDCA_TERM_TYPE_STEREO_JACK — -- undescribed --
• SDCA_TERM_TYPE_FRONT_LR_JACK — -- undescribed --
• SDCA_TERM_TYPE_CENTER_LFE_JACK — -- undescribed --
• SDCA_TERM_TYPE_SURROUND_LR_JACK — -- undescribed --
• SDCA_TERM_TYPE_REAR_LR_JACK — -- undescribed --
• SDCA_TERM_TYPE_HEADPHONE_JACK — -- undescribed --
• SDCA_TERM_TYPE_HEADSET_JACK — -- undescribed --
• SDCA_TERM_TYPE_SENSE_DATA — -- undescribed --
• SDCA_TERM_TYPE_PRIVACY_SIGNALING — -- undescribed --
• SDCA_TERM_TYPE_PRIVACY_INDICATORS — -- undescribed --

fr fr if you need actual meaning for any of these, the manpage is not the one, bestie 😭 the descriptions are literally -- undescribed -- and that's all we get.

---

👑 Description 👑

Okay so the whole point of this enum: it indicates what a Terminal Entity is used for 💖 that's the vibe. And for the full tea, the page points you at section 6.2.3 of the SDCA v1.0 specification — that's where the actual answers live, iykyk 📖✨

---

🌈 SEE ALSO 🌈

Kernel file ./include/sound/sdca_function.h plus the whole extended fam of related pages, all of them invited to the group chat 🫶:

• enum sdca_function_type(9)
• struct sdca_init_write(9)
• SDCA_CTL_TYPE(9)
• SDCA_CTL_TYPE_S(9)
• enum sdca_messageoffset_range(9)
• enum sdca_ump_mode(9)
• enum sdca_ump_owner(9)
• enum sdca_it_controls(9)
• enum sdca_ot_controls(9)
• enum sdca_usage_range(9)
• enum sdca_dataport_selector_range(9)
• enum sdca_mu_controls(9)
• enum sdca_su_controls(9)
• enum sdca_fu_controls(9)
• enum sdca_volume_range(9)
• enum sdca_xu_controls(9)
• enum sdca_fdl_set_index_range(9)
• enum sdca_cs_controls(9)
• enum sdca_samplerateindex_range(9)
• enum sdca_cx_controls(9)
• enum sdca_pde_controls(9)
• enum sdca_requested_ps_range(9)
• enum sdca_ge_controls(9)
• enum sdca_selected_mode_range(9)
• enum sdca_detected_mode_values(9)
• enum sdca_spe_controls(9)
• enum sdca_cru_controls(9)
• enum sdca_udmpu_controls(9)
• enum sdca_mfpu_controls(9)
• enum sdca_smpu_controls(9)
• enum sdca_sapu_controls(9)
• enum sdca_ppu_controls(9)
• enum sdca_tg_controls(9)
• enum sdca_hide_controls(9)
• enum sdca_entity0_controls(9)
• enum sdca_control_datatype(9)
• enum sdca_access_mode(9)
• enum sdca_access_layer(9)
• struct sdca_control_range(9)
• struct sdca_control(9)
• enum sdca_connector_type(9)
• struct sdca_entity_iot(9)
• enum sdca_clock_type(9)
• struct sdca_entity_cs(9)
• enum sdca_pde_power_state(9)
• struct sdca_pde_delay(9)
• struct sdca_entity_pde(9)
• enum sdca_entity_type(9)
• struct sdca_ge_control(9)
• struct sdca_ge_mode(9)
• struct sdca_entity_ge(9)
• struct sdca_entity_hide(9)
• enum sdca_xu_reset_mechanism(9)
• struct sdca_entity_xu(9)
• struct sdca_entity(9)
• enum sdca_channel_purpose(9)
• enum sdca_channel_relationship(9)
• struct sdca_channel(9)
• struct sdca_cluster(9)
• enum sdca_cluster_range(9)
• struct sdca_fdl_file(9)
• struct sdca_fdl_set(9)
• struct sdca_fdl_data(9)
• struct sdca_function_hid(9)
• struct sdca_function_data(9)

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and that's the whole page, bestie 💜 it lives in ./include/sound and it's dated October 2026 — yes, from the future, main character energy fr fr. mwah, go read section 6.2.3 🎀✨