sdw_alloc_stream(9)

sdw_alloc_stream(9) 💅✨

okay so this one is from the Kernel API Manual, bestie, and it's all about one little SoundWire helper that's honestly kind of a big deal 🫶 let's get into it.

🎀 NAME 🎀

sdw_alloc_stream — allocate and return stream runtime

🌈 SYNOPSIS 🌈

struct sdw_stream_runtime * sdw_alloc_stream (const char *stream_name ,
enum sdw_stream_type type );

🍓 ARGUMENTS 🍓

• stream_name — SoundWire stream name
• type — stream type (could be PCM, PDM or BPT)

💖 DESCRIPTION 💖

Allocates a SoundWire stream runtime instance. that's the whole vibe ✨ and listen, this is important: sdw_alloc_stream should be called only once per stream — no cap, do not spam it, bestie 🙈.

Typically invoked from ALSA/ASoC machine/platform driver. so yeah, that's usually where you'll catch it doing its thing 🎧💜

🚨 bestie PSA: once per stream. that's the rule, fr fr.

🔥 SEE ALSO 🔥

Kernel file: ./drivers/soundwire/stream.c 👑

• sdw_program_port_params(9)
• sdw_enable_disable_slave_ports(9)
• sdw_enable_disable_ports(9)
• sdw_prep_deprep_ports(9)
• sdw_notify_config(9)
• sdw_program_params(9)
• sdw_ml_sync_bank_switch(9)
• sdw_slave_rt_alloc(9)
• sdw_slave_rt_config(9)
• sdw_slave_rt_free(9)
• sdw_master_rt_alloc(9)
• sdw_master_rt_config(9)
• sdw_master_rt_free(9)
• sdw_config_stream(9)
• sdw_get_slave_dpn_prop(9)
• sdw_acquire_bus_lock(9)
• sdw_release_bus_lock(9)
• sdw_prepare_stream(9)
• sdw_enable_stream(9)
• sdw_disable_stream(9)
• sdw_deprepare_stream(9)
• sdw_startup_stream(9)
• sdw_shutdown_stream(9)
• sdw_release_stream(9)
• sdw_stream_add_master(9)
• sdw_stream_remove_master(9)
• sdw_stream_add_slave(9)
• sdw_stream_remove_slave(9)

later, bestie 💋 this one lives in ./drivers/soundwire, dated October 2026, and it's giving main-character kernel energy 🌟🦋