STRUCT STM_SOURCE_DATA(9)

✨ struct stm_source_data(9) ✨

okay so bestie, welcome to the <stm_source_data> glow-up page — this is the Kernel API Manual entry for struct stm_source_data, and it's literally the blueprint for an STM source device: the description and the callbacks, all in one little struct. 💅

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🌸 NAME 🌸

struct stm_source_data — STM source device description and callbacks 🎀

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🦋 SYNOPSIS 🦋

struct stm_source_data {
    const char              *name;
    struct stm_source_device *src;
    unsigned int            percpu;
    unsigned int            nr_chans;
    unsigned int            type;
    int (*link)(struct stm_source_data *data);
    void (*unlink)(struct stm_source_data *data);
 };

like, that's the whole vibe right there 👑

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💖 Members 💖

not me about to introduce every single field one by one, here we go 🫶

• name — the device name, and it's the one that gets used for policy lookup. so pick it cute, because it matters ✨
• src — internal structure, only used by stm class code. hands off, that's not yours 🔒
• percpu — it's in the struct! the original page doesn't give it a blurb, so I'm not gonna invent one 🙈 (no cap, it's literally just listed as a member)
• nr_chans — number of channels to allocate. count 'em 🔥
• type — the type of STM source driver, represented by stm_source_type. iykyk 🧚
• link — called when this source gets linked to an STM device. it's giving main character energy 🌟
• unlink — called when this source is about to get unlinked from its STM. say bye bestie 😭

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⭐ Description ⭐

so here's the tea: fill in this structure before calling stm_source_register_device to register a source device. that's the whole assignment, bestie 📝

also — pass it to unregister and write calls too. it's not a one-time thing, it's an everywhere thing 💫

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/stm.h
• enum stp_packet_type(9)
• enum stp_packet_flags(9)
• enum stm_source_type(9)
• struct stm_data(9)

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go read those, fr fr — they're the rest of the lore 📚

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okay that's the page!! 🎀 big slay to ./include/linux for hosting it, shoutout to the October 2026 date, and this whole thing is struct stm_source_data(9) — catch you in the next manpage, bestie 💜🦋✨