cs_amp_read_cal_coeffs(9)

💅 cs_amp_read_cal_coeffs(9) — a Kernel API Manual moment

okay so bestie, we're in the <pink>Kernel API Manual</pink> today and this little icon is literally the "go get the calibration numbers out of the firmware" girlie. No cap, that's her whole job. 🎀

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✨ NAME ✨

cs_amp_read_cal_coeffs — read calibration data from firmware controls. That's it, that's the vibe. 🦋

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✨ SYNOPSIS ✨

int cs_amp_read_cal_coeffs (struct cs_dsp *dsp , const struct
cirrus_amp_cal_controls *controls , struct cirrus_amp_cal_data *data );

ngl the signature is a whole three-argument situation, but she's worth it 💅

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🌸 ARGUMENTS 🌸

• dsp — a pointer to struct cs_dsp. Just your friendly neighbourhood DSP struct pointer, mwah 🫶
• controls — a pointer to the definition of the firmware controls that are gonna be read. Like the lil' menu of what to go fetch ✨
• data — a pointer to the calibration data, i.e. the spot where the results get written. Bestie this is the destination, the results are literally going in here 💖

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🔥 RETURN 🔥

0 on success — slay 💅 — otherwise a negative error value, which is giving "something went wrong, check it" energy 😭

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👑 SEE ALSO 👑

• Kernel file ./sound/soc/codecs/cs-amp-lib.c (the main character herself)
• cs_amp_write_cal_coeffs(9)
• cs_amp_write_ambient_temp(9)
• cs_amp_get_efi_calibration_data(9)
• cs_amp_set_efi_calibration_data(9)
• cs_amp_get_vendor_spkid(9)
• cs_amp_devm_get_vendor_specific_variant_id(9)
• cs_amp_create_debugfs(9)

the whole friend group fr fr, go read them too 🧚

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lowkey reminder: all the deets above are the whole deets — pointers, return value, the works. don't skip the error check, iykyk 💀

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and that's the page, bestie!! 🎀 this one lives in ./sound/soc/codecs and it's dated October 2026 — so mark your calendar, she's iconic, periodt. 🌈⭐💜