STRUCT FSL_DIU_DATA(9)

💖 struct fsl_diu_data(9) 💖

okay so this is a page from the Kernel API Manual and it's literally all about struct fsl_diu_data bestie, get comfy 🫶

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✨ NAME ✨

struct fsl_diu_data — the per-DIU data structure. that's it, that's the whole vibe 💅

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🌸 SYNOPSIS 🌸

struct fsl_diu_data {
    dma_addr_t dma_addr;
    struct fb_info fsl_diu_info[NUM_AOIS];
    struct mfb_info mfb[NUM_AOIS];
    struct device_attribute dev_attr;
    unsigned int irq;
    enum fsl_diu_monitor_port monitor_port;
    struct diu __iomem *diu_reg;
    spinlock_t reg_lock;
    u8 dummy_aoi[4 * 4 * 4];
    struct diu_ad dummy_ad;
    struct diu_ad ad[NUM_AOIS];
    u8 gamma[256 * 3];
    __le16 cursor[MAX_CURS * MAX_CURS];
    __le16 blank_cursor[MAX_CURS * MAX_CURS];
    __le16 next_cursor[MAX_CURS * MAX_CURS];
    uint8_t edid_data[EDID_LENGTH];
    bool has_edid;
};

like, look at her. every field exactly where it belongs, no notes 👑

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🦋 MEMBERS 🦋

• dma_addr — the DMA address of this structure 🎀
• fsl_diu_info — the fb_info objects, one per AOI
• dev_attr — the sysfs structure
• irq — the IRQ ⚡
• monitor_port — the monitor port this DIU is connected to
• diu_reg — a pointer to the DIU hardware registers
• reg_lock — the spinlock for register access 🔒
• dummy_aoi — the video buffer for the 4x4 32-bit dummy AOI
• dummy_ad — the DIU Area Descriptor for the dummy AOI
• ad[] — the Area Descriptors for each real AOI
• gamma — the gamma color table 🌈
• cursor — the hardware cursor data
• blank_cursor — the blank cursor, for hiding the cursor 🙈
• next_cursor — scratch space to build load cursor
• edid_data — the EDID information buffer
• has_edid — whether or not the EDID buffer is valid ✅

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💜 DESCRIPTION 💜

okay so the one thing you cannot miss: this data structure must be allocated with 32-byte alignment, so that the internal fields can be aligned properly. like fr fr, do not play with her alignment, it's giving structural integrity 💀

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🌟 SEE ALSO 🌟

• Kernel file ./drivers/video/fbdev/fsl-diu-fb.c
• fsl_diu_name_to_port(9)
• fsl_diu_get_pixel_format(9)

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and that's the whole page bestie, 10/10 no notes 🎀 this lil cutie lives in ./drivers/video/fbdev, dated October 2026, and she signs off as struct fsl_diu_data(9) — slay, periodt 💅✨