cs8409_i2c_read(9)

💖 NAME 💖

cs8409_i2c_read — CS8409 I2C Read. that's the whole vibe, bestie ✨

this little cutie lives in the Kernel API Manual (iykyk), and it's literally here to read a register for you 🎀

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🌸 SYNOPSIS 🌸

int cs8409_i2c_read (struct sub_codec *scodec , unsigned int addr );

like, that's the whole signature. two args, one int coming back at you 💅

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✨ ARGUMENTS ✨

• scodec — the codec instance 🧚 your main character struct, fr fr
• addr — Register to read. yes bestie, that's the one you're peeking at 👀

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — it returns negative on error. that's the sad path 😭

otherwise? it hands you the read value in bits 0-7 💖 that's it, that's the function. lowkey iconic for how simple it is 🌈

ngl bestie, if you get a negative back, something went wrong — don't just smile and nod at it 💀

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🫶 SEE ALSO 🫶

the source lives right here, no cap:

• Kernel file ./sound/hda/codecs/cirrus/cs8409.c

and the whole friend group 👑:

• cs8409_i2c_wait_complete(9)
• cs8409_set_i2c_dev_addr(9)
• cs8409_i2c_set_page(9)
• cs8409_i2c_bulk_read(9)
• cs8409_i2c_write(9)
• cs8409_i2c_bulk_write(9)

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⭐ okay that's the page!! this one came from ./sound/hda/codecs/cirrus, dated October 2026 — wrote it down so you can cite me later, periodt 💜🎀🦋