sdw_config_stream(9)

📦 version 7.3.1, in nixpkgs unstable

💖 sdw_config_stream(9) — the sdw_config_stream glow-up 🎀

okay bestie, welcome to the Kernel API Manual ✨ today we're getting into sdw_config_stream(9) and honestly? it's giving "small function, big responsibilities" energy. let's go 💅

🌸 NAME 🌸

sdw_config_stream — configure the allocated stream 🦋

like, the stream is already allocated, and now you're giving it its configuration. periodt.

✨ SYNOPSIS ✨

int sdw_config_stream (struct device *dev , struct sdw_stream_runtime
*stream , struct sdw_stream_config *stream_config , bool is_slave );

that's the whole signature, no cap. four arguments, one int coming back at you 💜

🫶 ARGUMENTS 🫶

  • dev — the SDW device 💻 like, the device device.
  • stream — the SoundWire stream 🌊 the actual stream we're working with.
  • stream_config — stream configuration for the audio stream 🎧 yes, the config for your audio stream. it's right there in the name bestie.
  • is_slave — is the API called from Slave or Master? 👑 that's literally the question this flag is answering. Slave or Master. pick one.

💅 DESCRIPTION 💅

okay so here's the one thing you cannot fumble: this function is to be called with bus_lock held. 🔒

like, held held. not "I'll grab it in a sec", not "my friend has it". if you're calling sdw_config_stream without bus_lock held you are lowkey doing it wrong and the kernel is not gonna be cute about it 😭

real talk: bus_lock held. that's the rule. don't be the person who skips it 🙈

🌈 SEE ALSO 🌈

Kernel file ./drivers/soundwire/stream.c — go read it, iykyk 📖 and while you're in the neighborhood, these are all the friends in the group chat:

all twenty-eight of them, accounted for, nobody left on read 💖

✨ and that's the page, bestie ✨ this gem lives in ./drivers/soundwire, dated October 2026 — stan the SoundWire crew, they ate 🍓💅

📦 where this page comes from