sdw_notify_config(9)

💖 sdw_notify_config(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — literally the SoundWire corner of the kernel, and yes we're gonna get through this together 🫶

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🌸 NAME 🌸

sdw_notify_config — notify the bus about the new configuration, i.e. the "hey everyone, things changed!!" function 📣

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✨ SYNOPSIS ✨

int sdw_notify_config (struct sdw_master_runtime *m_rt );

like it takes one thing and gives you back an int, that's the whole vibe 💅

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🎀 ARGUMENTS 🎀

• m_rt — the Master runtime handle 👑 this is your golden ticket, the thing that tells the function which master runtime we're talking about, no cap

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🦋 DESCRIPTION 🦋

so what does it actually do? it notifies the Master(s) and Slave(s) of the new bus configuration — that's it, that's the whole gig 💫

think of it as the group-chat announcement: everybody on the bus needs to know the config changed, and this function is the one sliding into everyone's DMs to tell them 📲✨ the Masters hear about it, the Slaves hear about it, nobody gets left on read 🙈

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🌈 SEE ALSO 🌈

okay this is the part where the manpage name-drops literally the entire friend group 😭 all of these live in the kernel file ./drivers/soundwire/stream.c — go say hi to them:

• sdw_program_port_params(9)
• sdw_enable_disable_slave_ports(9)
• sdw_enable_disable_ports(9)
• sdw_prep_deprep_ports(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_alloc_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)

not a single one skipped, we ate that list UP 🔥👑

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and that's the page bestie!! 🎀 it ships out of ./drivers/soundwire and it's dated October 2026 ⭐ mwah, go notify some buses, ily 💜🧚