STRUCT SDW_BPT_SECTION(9)

💅 struct sdw_bpt_section(9) 💅

okay so this is a page from the Kernel API Manual, bestie, and it's literally all about struct sdw_bpt_section — the message section structure. yes it's a struct, yes it's iconic, no we're not skipping anything 🫶

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✨ NAME ✨

struct sdw_bpt_section — the message section structure 🌸

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🦋 SYNOPSIS 🦋

struct sdw_bpt_section {
    u32 addr;
    u32 len;
    u8 *buf;
 };

that's the whole vibe right there — three members, zero drama 💅

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🎀 Members 🎀

• addr — the Start Register address that gets accessed in the Slave. like, where the whole convo starts ✨
• len — the number of bytes to transfer. ngl you can transfer more than 64Kb, but there's a practical limit of SDW_BPT_MSG_MAX_BYTES that is enforced, so like… respect the cap okay 😭
• buf — the section data buffer. it gets filled by the host for writes, and filled by the Peripheral hardware for reads. so basically whoever's turn it is does the filling, no cap 🧚

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👑 SEE ALSO 👑

• Kernel file ./drivers/soundwire/bus.h — plus these fellow main characters:
  • struct sdw_msg(9)
  • struct sdw_bpt_msg(9)
  • struct sdw_port_runtime(9)
  • struct sdw_slave_runtime(9)
  • struct sdw_master_runtime(9)

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💖 reminder: those struct names and that file path are literal, so type them exactly, bestie — iykyk 🌈

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and that's the page fr fr 🍓 ty for reading, mwah 💜 — this one lives in ./drivers/soundwire and it's dated October 2026, so like, see you then ✨🎀