mipi_dbi_spi_transfer(9)

📦 version 7.3.1, in nixpkgs unstable

✨ mipi_dbi_spi_transfer(9) — the SPI transfer helper bestie ✨

okay so real talk, this is a page straight out of the Kernel API Manual, and it's all about mipi_dbi_spi_transfer — the lil helper that does the heavy lifting so you don't have to 🫶

🌸 NAME 🌸

mipi_dbi_spi_transfer — SPI transfer helper. that's it, that's the vibe 💅

🎀 SYNOPSIS 🎀

int mipi_dbi_spi_transfer (struct spi_device *spi , u32 speed_hz , u8
bpw , const void *buf , size_t len );

literally just five args, no cap ✨

💖 ARGUMENTS 💖

  • spi — the SPI device, your main character 🌟
  • speed_hz — override speed (optional, so you can lowkey skip it if you want) 🏃‍♀️
  • bpw — bits per word, exactly what it says on the tin 🎯
  • buf — buffer to transfer, the actual payload 💌
  • len — buffer length, how much of it we're sending 📏

🦋 DESCRIPTION 🦋

so here's the tea ☕ — this SPI transfer helper breaks up the transfer of buf into chunks, specifically the chunks that the SPI controller driver can actually handle. it's giving "divide and conquer" energy fr fr 👑

⚠️ big one: the SPI bus must be locked when calling this. not optional, not a suggestion — lock it first, bestie 🔒😭

🌈 RETURN 🌈

  • Zero on success — we slay 🎉
  • negative error code on failure — it's giving flop, handle it 💀

👑 SEE ALSO 👑

the whole friend group, no one left out 🫶:

and that's the whole page, bestie — brought to you by the fine folks over at ./drivers/gpu/drm, dated October 2026, Kernel API Manual energy all the way through. go lock that bus and transfer your little heart out 🧚‍♀️💜✨

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