STRUCT FBTFT_PAR(9)

💖 NAME 💖

struct fbtft_par — the main FBTFT data structure, aka the main character of this whole show 🎀

(this one lives in the Kernel API Manual, bestie — yes, that's the vibe of the manual we're in rn ✨)

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🌸 SYNOPSIS 🌸

okay so here's the whole struct, every last field, no cap, not skipping a single one:

struct fbtft_par {
    struct spi_device *spi;
    struct platform_device *pdev;
    struct fb_info *info;
    struct fbtft_platform_data *pdata;
    u16 *ssbuf;
    u32 pseudo_palette[16];
    struct {
      void *buf;
      size_t len;
    } txbuf;
    u8 *buf;
    u8 startbyte;
    struct fbtft_ops fbtftops;
    spinlock_t dirty_lock;
    unsigned int dirty_lines_start;
    unsigned int dirty_lines_end;
    struct {
      struct gpio_desc *reset;
      struct gpio_desc *dc;
      struct gpio_desc *rd;
      struct gpio_desc *wr;
      struct gpio_desc *latch;
      struct gpio_desc *cs;
      struct gpio_desc *db[16];
      struct gpio_desc *led[16];
      struct gpio_desc *aux[16];
    } gpio;
    const s16 *init_sequence;
    struct {
      struct mutex lock;
      u32 *curves;
      int num_values;
      int num_curves;
    } gamma;
    unsigned long debug;
    bool first_update_done;
    ktime_t update_time;
    bool bgr;
    void *extra;
    bool polarity;
 };

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🦋 Members 🦋

a lil roll call of everyone invited to the function, iykyk 👑

• the pointers squad — spi, pdev, info, pdata, ssbuf, and pseudo_palette[16] 💅
• the txbuf duo — a nested struct holding buf and len (void *buf; and size_t len;) 🎀
• the solo crew — buf, startbyte, fbtftops, init_sequence, debug, first_update_done, update_time, bgr, extra, and polarity ✨
• the dirty girls — dirty_lock (a spinlock_t), plus dirty_lines_start and dirty_lines_end (both unsigned int) 🔥
• the gpio block — reset, dc, rd, wr, latch, cs, and then the big arrays: db[16], led[16], aux[16] 🫶
• the gamma block — lock (a struct mutex), curves (a u32 *), num_values, and num_curves 🌈

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✨ Description ✨

This structure holds all relevant data to operate the display. literally all of it, it's giving "one struct to rule them all" 👑

See sourcefile for documentation since nested structs is not supported by kernel-doc. yeah 😭 kernel-doc said "not me being unable to handle nested structs" so bestie, the sourcefile is where the real lore lives — go read it fr fr 💀

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💜 SEE ALSO 💜

Kernel file ./drivers/staging/fbtft/fbtft.h struct fbtft_gpio(9), struct fbtft_ops(9), struct fbtft_display(9), struct fbtft_platform_data(9) — the whole friend group, go say hi 🌸

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and that's the page bestie 🎀 sign-off time: this lil gem comes from ./drivers/staging/fbtft, dated October 2026 ⭐ periodt 💅