STRUCT PMIC_MPP_PAD(9)

💅 struct pmic_mpp_pad(9) — like, the whole kernel API manual vibe

okay bestie, welcome to the Kernel API Manual, section 9, and today's main character is literally a struct called pmic_mpp_pad ✨ no cap, this is the glow-up page for it.

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✨ NAME ✨

struct pmic_mpp_pad — keep current MPP settings 🎀

That's it. That's the job. It holds onto the MPP settings so they don't wander off. Iconic, honestly.

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🌸 SYNOPSIS 🌸

struct pmic_mpp_pad {
    u16 base;
    bool is_enabled;
    bool out_value;
    bool output_enabled;
    bool input_enabled;
    bool paired;
    bool has_pullup;
    unsigned int    num_sources;
    unsigned int    power_source;
    unsigned int    amux_input;
    unsigned int    aout_level;
    unsigned int    pullup;
    unsigned int    function;
    unsigned int    drive_strength;
    unsigned int    dtest;
 };

look at her. fifteen fields. all accounted for. not one of them skipped, because we do not do that here 💖

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🦋 Members 🦋

okay so let's meet the squad, one by one, because each of them matters:

• base — address base in SPMI device. like, where she lives 🏠
• is_enabled — set to false when the MPP should be put in high Z state. that's the off-switch energy, bestie.
• out_value — cached pin output value. her little memory of what she was outputting 🫶
• output_enabled — set to true if MPP output logic is enabled. yes queen, output 💅
• input_enabled — set to true if MPP input buffer logic is enabled. she's listening 🎧
• paired — pin operates in paired mode. it takes two, fr fr 👯
• has_pullup — pin has support to configure pullup. not everyone can, she can 💪
• num_sources — number of power-sources supported by this MPP. count 'em 🔢
• power_source — current power-source used. the one actively powering the vibe ⚡
• amux_input — set the source for analog input. analog girlies rise 🌈
• aout_level — analog output level 📶
• pullup — pullup resistor value. valid in Bidirectional mode only — like, do not try her in other modes, it will not go well 🙈
• function — see pmic_mpp_functions[]. iykyk 🔥
• drive_strength — amount of current in sink mode 🌀
• dtest — DTEST route selector. choose your route, main character 🚗

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👑 SEE ALSO 👑

• Kernel file ./drivers/pinctrl/qcom/pinctrl-spmi-mpp.c — go read the source, bestie, it's giving lore ⭐

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lowkey reminder: pullup is only valid in Bidirectional mode, so don't be out here setting it in other modes and then acting surprised 😭

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and that's the page, babe 🌷 this little number lives under ./drivers/pinctrl/qcom, dated October 2026, and it's filed as struct pmic_mpp_pad(9) — periodt 💜🧚