STRUCT SDW_CDNS_PDI(9)

✨ struct sdw_cdns_pdi(9) — the Kernel API Manual tea ☕💅

okay so bestie, welcome to the struct sdw_cdns_pdi(9) page from the Kernel API Manual — yes it's a real kernel thing, no I'm not joking, and yes we're gonna get through it together 🫶

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🌸 NAME 🌸

struct sdw_cdns_pdi — a PDI (Physical Data Interface) instance ✨ literally what it says on the tin, no cap.

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🎀 SYNOPSIS 🎀

here's the whole vibe, verbatim, do not touch:

struct sdw_cdns_pdi {
    int num;
    int intel_alh_id;
    int l_ch_num;
    int h_ch_num;
    int ch_count;
    enum sdw_data_direction dir;
    enum sdw_stream_type type;
 };

look at her. iconic. not a single field out of place 👑

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🦋 MEMBERS 🦋

okay let's go through the whole squad one by one, no skipping, we respect all of them:

• num — the pdi number. that's her whole government name, basically 💖
• intel_alh_id — link identifier. it's giving "who's your plus-one at the link party" 😌
• l_ch_num — low channel for PDI. the low end, the bass, the foundation 🎶
• h_ch_num — high channel for PDI. the high end, the sparkle on top ✨
• ch_count — total channel count for PDI. the whole headcount, both ends combined, fr fr.
• dir — data direction. which way the data's walking, bestie 🚶‍♀️
• type — stream type, (only PCM supported). read that again: only PCM supported — anything else is a no from her 🙈

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👑 SEE ALSO 👑

go read the rest of the family, iykyk:

• Kernel file ./drivers/soundwire/cadence_master.h struct
• sdw_cdns_streams(9)
• struct sdw_cdns_stream_config(9)
• struct sdw_cdns_dai_runtime(9)
• struct sdw_cdns(9)

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🌈 the cute sign-off 🌈

and that's the page, bestie!! 💜 this little beauty lives over in ./drivers/soundwire, it's from the October 2026 edition of the Kernel API Manual, and its official title is struct sdw_cdns_pdi(9). go forth and slay your soundwire init 🔥🎀