STRUCT SDCA_ENTITY(9)

💖 struct sdca_entity(9) 💖

okay so bestie, welcome to struct sdca_entity(9) — a page from the Kernel API Manual ✨ and honestly? it's giving "one little struct holds an entire SDCA Entity's whole personality." like every single thing you'd ever wanna know about a single Entity lives in here 🫶

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🌸 NAME 🌸

struct sdca_entity — literally all the info for one SDCA Entity, no cap 💅

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✨ SYNOPSIS ✨

struct sdca_entity {
    const char *label;
    int id;
    enum sdca_entity_type type;
    struct sdca_entity *group;
    struct sdca_entity **sources;
    struct sdca_control *controls;
    int num_sources;
    int num_controls;
    union {
      struct sdca_entity_iot iot;
      struct sdca_entity_cs cs;
      struct sdca_entity_pde pde;
      struct sdca_entity_ge ge;
      struct sdca_entity_hide hide;
      struct sdca_entity_xu xu;
    };
 };

like look at it. a whole struct. so organized. we stan a structured struct 🎀

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🦋 Members 🦋

okay so member by member, here's the tea ☕

• label — a string, like "OT 12" — yes literally that kind of string, that's the example the page gives, iconic 💫
• id — the identifier used for addressing. that's its whole job. addressing. periodt 👑
• type — the type code for the Entity, iykyk
• group — pointer to the Group Entity that controls this one; it's NULL if N/A, so don't go dereferencing it without a vibe check 💀
• sources — a dynamically allocated array pointing to each input Entity connected to this Entity 🔗
• controls — a dynamically allocated array of Controls 🎛️
• num_sources — the number of sources for the Entity
• num_controls — the number of Controls for the Entity
• {unnamed_union} — anonymous 🌫️ (yes it's literally just the anonymous union member, no name, mysterious main character energy)

💜 and inside that anonymous union 💜

• iot — Input/Output Terminal specific Entity properties 🌈
• cs — Clock Source specific Entity properties ⏰
• pde — Power Domain Entity specific Entity properties ⚡
• ge — Group Entity specific Entity properties 👯
• hide — HIDE Entity specific Entity properties 🙈
• xu — XU Entity specific Entity properties 🔥

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🔍 SEE ALSO 🔍

bestie. sit down. this list is long and every single one of these is a real reference, so here's the entire squad, no skips, no edits 💖

• the Kernel file ./include/sound/sdca_function.h
• 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_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)
• 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)

like... that's the whole friend group and they ALL showed up to the party 🎉💅

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and that's the page bestie!! 🎀 lowkey a serve. this one lives over in ./include/sound and it's dated October 2026 — so yeah, mark your calendar, screenshot it, put it on the fridge, mwah 💖🦋✨