ENUM VADC_SCALE_FN_TYPE(9)

💅 enum vadc_scale_fn_type(9) — the Kernel API Manual glow-up ✨

okay so bestie, welcome to the Kernel API Manual page for enum vadc_scale_fn_type, and ngl this one is a whole mood: it's basically the little menu of scaling functions that take your raw ADC code and turn it into actual physical scaled units for the channel. like, raw numbers in, real-world meaning out. iconic conversion behavior fr fr 🦋

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✨ NAME ✨

enum vadc_scale_fn_type — Scaling function to convert ADC code to physical scaled units for the channel.

like yes, that's literally the job description and it ate 💅

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🌸 SYNOPSIS 🌸

enum vadc_scale_fn_type {
    SCALE_DEFAULT ,
    SCALE_THERM_100K_PULLUP ,
    SCALE_PMIC_THERM ,
    SCALE_XOTHERM ,
    SCALE_PMI_CHG_TEMP ,
    SCALE_HW_CALIB_DEFAULT ,
    SCALE_HW_CALIB_THERM_100K_PULLUP ,
    SCALE_HW_CALIB_XOTHERM ,
    SCALE_HW_CALIB_THERM_100K_PU_PM7 ,
    SCALE_HW_CALIB_PMIC_THERM ,
    SCALE_HW_CALIB_PMIC_THERM_PM7 ,
    SCALE_HW_CALIB_PM5_CHG_TEMP ,
    SCALE_HW_CALIB_PM5_SMB_TEMP

};

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🎀 Constants 🎀

okay so here's the whole cast, main-character style 👑

• SCALE_DEFAULT — Default scaling to convert raw adc code to voltage (uV). the og, the blueprint, the "just give me microvolts" option 🫶
• SCALE_THERM_100K_PULLUP — Returns temperature in millidegC. Uses a mapping table with 100K pullup. lookup table core, 100K pullup slay 💖
• SCALE_PMIC_THERM — Returns result in milli degree's Centigrade. (yes, that apostrophe is canon, i don't make the rules 😭)
• SCALE_XOTHERM — Returns XO thermistor voltage in millidegC. getting that XO thermistor reading, cute 🌸
• SCALE_PMI_CHG_TEMP — Conversion for PMI CHG temp. that's it, that's the whole vibe 🔥
• SCALE_HW_CALIB_DEFAULT — Default scaling to convert raw adc code to voltage (uV) with hardware applied offset/slope values to adc code. same energy as the default but the hardware does the offset/slope glow-up ✨
• SCALE_HW_CALIB_THERM_100K_PULLUP — Returns temperature in millidegC using lookup table. The hardware applies offset/slope to adc code. lookup table + hardware offset/slope, bestie, a collab 💫
• SCALE_HW_CALIB_XOTHERM — Returns XO thermistor voltage in millidegC using 100k pullup. The hardware applies offset/slope to adc code. XO thermistor with the 100k pullup, and yes, hardware offset/slope on top 🦋
• SCALE_HW_CALIB_THERM_100K_PU_PM7 — Returns temperature in millidegC using lookup table for PMIC7. The hardware applies offset/slope to adc code. PMIC7 edition, the way that lookup table is doing the most 💜
• SCALE_HW_CALIB_PMIC_THERM — Returns result in milli degree's Centigrade. The hardware applies offset/slope to adc code. This is for PMIC7. milli degrees Centigrade, and mind the PMIC7 note 📌
• SCALE_HW_CALIB_PMIC_THERM_PM7 — -- undescribed --. no cap, the manpage literally just says it's undescribed. the mystery. the intrigue. we simply do not know 🙈
• SCALE_HW_CALIB_PM5_CHG_TEMP — Returns result in millidegrees for PMIC5 charger temperature. PMIC5 charger temp reporting, millidegrees, periodt ⌚
• SCALE_HW_CALIB_PM5_SMB_TEMP — Returns result in millidegrees for PMIC5 SMB1390 temperature. PMIC5 SMB1390 temp, millidegrees, and that's the whole note 🍓

ngl the one thing to remember: every constant here is copied exact, casing and all, so don't go "fixing" the underscores or the apostrophes bestie, they're part of the lore 💀

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🔍 SEE ALSO 🔍

• Kernel file ./include/linux/iio/adc/qcom-vadc-common.h struct vadc_linear_graph(9)

go read that struct next, that's your next hyperfixation, iykyk 🌈

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and that's the page!! mwah 💋 from the Kernel API Manual, brought to you by the good people at ./include/linux/iio/adc, dated October 2026 — bookmark it, screenshot it, send it to the group chat, you're welcome bestie 🎀🫶✨