STRUCT SOF_IPC4_FW_LIBRARY(9)

💖 struct sof_ipc4_fw_library(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for struct sof_ipc4_fw_library(9), and it's literally all about IPC4 library information. no cap, that's the whole vibe.

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🌸 NAME 🌸

struct sof_ipc4_fw_library — IPC4 library information 🎀

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✨ SYNOPSIS ✨

struct sof_ipc4_fw_library {
    struct sof_firmware sof_fw;
    const char *name;
    u32 id;
    int num_modules;
    struct sof_ipc4_fw_module *modules;
 };

like, look at her. main character struct. 👑

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🫶 Members 🫶

okay let's do a little meet-and-greet with the fields, fr fr:

• sof_fw — the SOF Firmware of the library 🦋 that's her firmware, that's the whole point.
• id — the Library ID. okay so this one matters: 0 is reserved for basefw, so external libraries must have a unique ID number between 1 and (sof_ipc4_fw_data.max_libs_count - 1). like, don't touch 0, that's not yours 💅
• num_modules — the number of FW modules in the library. just counting the modules, bestie 🔢
• modules — array of FW modules. the whole squad, lined up 🌈

also name is chillin' in the struct up there ☝️ — the original page doesn't give her a lil description, so I'm not gonna make one up. iykyk 🙈

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💀 Note 💀

so if sof_ipc4_fw_data.max_libs_count == 1, that implies external libraries are not supported. periodt. if you're sitting at 1, there's no room for externals, that's the whole deal 🔥

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🧚 SEE ALSO 🧚

• Kernel file ./sound/soc/sof/ipc4-priv.h
• struct sof_ipc4_fw_module(9)
• struct sof_ipc4_fw_data(9)

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and that's the page, bestie! 🎀✨ this one lives in ./sound/soc/sof, and the version/date stamped on it is October 2026 — so, like, future vibes only 💜🦋 mwah, go read the source, ily 🫶