STRUCT DFL_FEATURE_DEV_DATA(9)

✨ struct dfl_feature_dev_data(9) — the kernel API manual, bestie edition ✨

okay so we're in the kernel API manual for struct dfl_feature_dev_data, and no cap, this is the whole vibe: it's the dfl enumeration data for dfl feature dev 💅 like, the little data bundle that holds everything a DFL feature device needs to know about itself. she's giving main character energy in ./drivers/fpga. let's get into it 🎀

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🌸 NAME 🌸

struct dfl_feature_dev_data — dfl enumeration data for dfl feature dev. periodt. that's her whole job 🫶

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✨ SYNOPSIS ✨

struct dfl_feature_dev_data {
    struct list_head node;
    struct mutex lock;
    struct platform_device *dev;
    enum dfl_id_type type;
    int pdev_id;
    const char *pdev_name;
    struct dfl_fpga_cdev *dfl_cdev;
    int id;
    unsigned int disable_count;
    bool excl_open;
    int open_count;
    void *private;
    int num;
    struct dfl_feature *features;
    int resource_num;
    struct resource *resources;
 };

like, look at her. seventeen fields of pure usefulness 🦋

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💖 Members 💖

okay bestie, field-by-field, here we go — every single one, no skipping 🙈

• node — node to link the data structure to container device's port_dev_list.
• lock — mutex to protect feature dev data. guard her 🔒
• dev — ptr to the feature's platform device linked with this structure.
• type — type of DFL FIU for the feature dev. See enum dfl_id_type. iykyk.
• pdev_id — platform device id for the feature dev.
• pdev_name — platform device name for the feature dev.
• dfl_cdev — ptr to container device.
• id — id used for the feature device.
• disable_count — count for port disable.
• excl_open — set on feature device exclusive open. very "do not disturb" of her 💅
• open_count — count for feature device open.
• private — ptr to feature dev private data.
• num — number for sub features.
• features — sub features for the feature dev.
• resource_num — number of resources for the feature dev.
• resources — resources for the feature dev. the whole resource moment 🔥

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🎀 SEE ALSO 🎀

Kernel file ./drivers/fpga/dfl.h — and then the whole friend group, fr fr:

• struct dfl_fpga_port_ops(9)
• struct dfl_feature_id(9)
• struct dfl_feature_driver(9)
• struct dfl_feature_irq_ctx(9)
• struct dfl_feature(9)
• struct dfl_feature_platform_data(9)
• struct dfl_fpga_enum_info(9)
• struct dfl_fpga_enum_dfl(9)
• struct dfl_fpga_cdev(9)

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ngl, read the whole squad before you go poking at dfl_feature_dev_data — she does NOT travel alone 😭

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k bye bestie, mwah 💋 this came straight out of ./drivers/fpga, dated October 2026, and the manual itself is struct dfl_feature_dev_data(9) — slay, go read the source, ily 🌈⭐💜