ENUM SDCA_ACCESS_MODE(9)

💅 enum sdca_access_mode(9)

okay so you're in the Kernel API Manual and the star of the show is enum sdca_access_mode — literally the SDCA Control access mode bestie, that's the whole vibe ✨

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🎀 SYNOPSIS

no cap, here's the whole enum exactly as it lives, character for character:

enum sdca_access_mode {
    SDCA_ACCESS_MODE_RW ,
    SDCA_ACCESS_MODE_DUAL ,
    SDCA_ACCESS_MODE_RW1C ,
    SDCA_ACCESS_MODE_RO ,
    SDCA_ACCESS_MODE_RW1S ,
    SDCA_ACCESS_MODE_DC

};

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🌸 Constants

okay so real talk — the docs for these are giving mystery. each one is literally just labeled -- undescribed -- in the source, so I'm not gonna invent lore for you, that would be lying and we don't do that 🫶

• SDCA_ACCESS_MODE_RW — -- undescribed --
• SDCA_ACCESS_MODE_DUAL — -- undescribed --
• SDCA_ACCESS_MODE_RW1C — -- undescribed --
• SDCA_ACCESS_MODE_RO — -- undescribed --
• SDCA_ACCESS_MODE_RW1S — -- undescribed --
• SDCA_ACCESS_MODE_DC — -- undescribed --

that's it. that's the list. six iconic little constants and zero commentary, iykyk 💀

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🦋 Description

so what are these? they're the access modes as described in the SDCA specification v1.0 section 7.1.8.2 📖✨ that's the receipt, that's where you go for the actual tea. this enum is just the C-shaped translation of that section, periodt.

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👑 SEE ALSO

the whole squad, fr fr — they all live in 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_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)

like, that's 65 of them. sixty-five. they ate and left no crumbs 👑

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lowkey reminder: I gave you zero extra behaviour claims here — if the source says -- undescribed --, it stays undescribed. don't come for me, go read SDCA spec v1.0 § 7.1.8.2 💖

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that's the whole page bestie!! 🌈 source: ./include/sound, dated October 2026 — mwah, go slay some SDCA controls 💅🎀🦋