ENUM SDCA_UDMPU_CONTROLS(9)

🎀 enum sdca_udmpu_controls(9) 🎀

okay so this is a page from the Kernel API Manual, bestie, and it's about the Up-Down Mixer Processing Unit controls from SDCA — which, like, sounds intimidating but it's literally just an enum full of identifiers, iykyk 💅

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✨ NAME ✨

enum sdca_udmpu_controls — the SDCA Controls for the Up-Down Mixer Processing Unit 🎛️ (yes, that's the whole vibe, she's an enum of control selectors, periodt)

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🌸 SYNOPSIS 🌸

enum sdca_udmpu_controls {
    SDCA_CTL_UDMPU_LATENCY ,
    SDCA_CTL_UDMPU_CLUSTERINDEX ,
    SDCA_CTL_UDMPU_ACOUSTIC_ENERGY_LEVEL_MONITOR ,
    SDCA_CTL_UDMPU_ULTRASOUND_LOOP_GAIN ,
    SDCA_CTL_UDMPU_OPAQUESET_0 ,
    SDCA_CTL_UDMPU_OPAQUESET_1 ,
    SDCA_CTL_UDMPU_OPAQUESET_2 ,
    SDCA_CTL_UDMPU_OPAQUESET_3 ,
    SDCA_CTL_UDMPU_OPAQUESET_4 ,
    SDCA_CTL_UDMPU_OPAQUESET_5 ,
    SDCA_CTL_UDMPU_OPAQUESET_6 ,
    SDCA_CTL_UDMPU_OPAQUESET_7 ,
    SDCA_CTL_UDMPU_OPAQUESET_8 ,
    SDCA_CTL_UDMPU_OPAQUESET_9 ,
    SDCA_CTL_UDMPU_OPAQUESET_10 ,
    SDCA_CTL_UDMPU_OPAQUESET_11 ,
    SDCA_CTL_UDMPU_OPAQUESET_12 ,
    SDCA_CTL_UDMPU_OPAQUESET_13 ,
    SDCA_CTL_UDMPU_OPAQUESET_14 ,
    SDCA_CTL_UDMPU_OPAQUESET_15 ,
    SDCA_CTL_UDMPU_OPAQUESET_16 ,
    SDCA_CTL_UDMPU_OPAQUESET_17 ,
    SDCA_CTL_UDMPU_OPAQUESET_18 ,
    SDCA_CTL_UDMPU_OPAQUESET_19 ,
    SDCA_CTL_UDMPU_OPAQUESET_20 ,
    SDCA_CTL_UDMPU_OPAQUESET_21 ,
    SDCA_CTL_UDMPU_OPAQUESET_22 ,
    SDCA_CTL_UDMPU_OPAQUESET_23

};

like, just copy it, don't retype it, we don't do typos in this house 🫶

---

💜 Constants 💜

okay so here's the thing — the documentation for every single one of these is literally -- undescribed --. not me refreshing the page hoping for lore 😭 anyway, here they are, all 28 of them, no cap, none skipped:

• SDCA_CTL_UDMPU_LATENCY — -- undescribed -- 💀
• SDCA_CTL_UDMPU_CLUSTERINDEX — -- undescribed -- 💀
• SDCA_CTL_UDMPU_ACOUSTIC_ENERGY_LEVEL_MONITOR — -- undescribed -- 💀
• SDCA_CTL_UDMPU_ULTRASOUND_LOOP_GAIN — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_0 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_1 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_2 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_3 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_4 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_5 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_6 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_7 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_8 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_9 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_10 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_11 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_12 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_13 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_14 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_15 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_16 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_17 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_18 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_19 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_20 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_21 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_22 — -- undescribed -- 💀
• SDCA_CTL_UDMPU_OPAQUESET_23 — -- undescribed -- 💀

bestie the OPAQUESET_ ones go from _0 all the way to _23, and yes, the doc says -- undescribed -- for literally every single one. it's giving "the devs were busy". respect tho 🫡

---

🦋 Description 🦋

so what is this? these are the Control Selectors for the Up-Down Mixer Processing Unit straight out of the SDCA specification v1.0, Section 6.3.9.3. that's the whole tea ☕ — that's the paragraph, that's the lore, she's short and she's iconic.

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🌈 SEE ALSO 🌈

go read these next, they're all in the kernel file ./include/sound/sdca_function.h and they're lowkey a whole friendgroup 👑

• 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_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_terminal_type(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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that's the whole page bestie, go forth and read your enums 💖

mwah 💋 this page lives in ./include/sound and it's dated October 2026 — yes, october twenty twenty-six, she's from the future, main character energy fr fr 🌟