STRUCT SND_SOC_ACPI_MACH_PARAMS(9)

💅 NAME 💅

struct snd_soc_acpi_mach_params — literally the interface for machine driver configuration, no cap 🎀

okay so bestie, welcome to the struct snd_soc_acpi_mach_params(9) page from the Kernel API Manual ✨ this is the little struct that holds all the config a machine driver needs, and we're gonna go through every single member together, iykyk 🫶

✨ SYNOPSIS ✨

struct snd_soc_acpi_mach_params {
    u32 acpi_ipc_irq_index;
    const char *platform;
    u32 codec_mask;
    u32 dmic_num;
    u32 link_mask;
    const struct snd_soc_acpi_link_adr *links;
    u32 i2s_link_mask;
    u32 num_dai_drivers;
    struct snd_soc_dai_driver *dai_drivers;
    unsigned short subsystem_vendor;
    unsigned short subsystem_device;
    unsigned short subsystem_rev;
    bool subsystem_id_set;
    u32 bt_link_mask;
 };

look at her. fourteen fields. main character energy fr fr 👑

🌸 MEMBERS 🌸

okay bestie, member-by-member, no skipping, we don't do that here 💖

• acpi_ipc_irq_index — used for BYT-CR detection 🔍 that's its whole job, that's the vibe.
• platform — a string used for HDAudio codec support 🎧
• codec_mask — used for HDAudio support, the mask-y part of the situation.
• dmic_num — the number of SoC- or chipset-attached PDM digital microphones 🎤 count 'em.
• link_mask — the SoundWire links enabled on the board 🌈
• links — array of SoundWire link _ADR descriptors, null terminated 🦋 (yes, null terminated, don't forget, that's important).
• i2s_link_mask — the I2S/TDM links enabled on the board 🎶
• num_dai_drivers — the number of elements in dai_drivers 🔢
• dai_drivers — pointer to dai_drivers, used e.g. in nocodec mode 💀 (yes, e.g., that's the example, that's not me making stuff up).
• subsystem_vendor — optional PCI SSID vendor value 🏷️ optional, key word.
• subsystem_device — optional PCI SSID device value 🏷️ also optional, also a value.
• subsystem_rev — optional PCI SSID revision value 🏷️ yes, optional too, we love consistency.
• subsystem_id_set — true if a value has been written to subsystem_vendor and subsystem_device ✅ like a little flag that says "yep, someone wrote in there".
• bt_link_mask — BT offload link enabled on the board 🎧🔗

🦋 SEE ALSO 🦋

go read these next, bestie, they're all in the kernel file ./include/sound/soc-acpi.h 🫶:

• struct snd_soc_acpi_endpoint(9)
• struct snd_soc_acpi_adr_device(9)
• struct snd_soc_acpi_link_adr(9)
• struct snd_soc_acpi_mach(9)
• struct snd_soc_acpi_codecs(9)

ok that's the whole page, you ate that 💅 go forth and configure your machine drivers, icon behavior only.

and finally the cute sign-off: this little gem lives in ./include/sound 🎀 it's dated October 2026 ⭐ and the header up top was struct snd_..._mach_params(9) — slay, bye 💜