fb_fix_screeninfo

说明

定义HIFB的固定屏幕信息，此为Linux FrameBuffer结构体。

定义

struct fb_fix_screeninfo {
    char id[16];            /* identification string eg "TT Builtin" */
    unsigned long smem_start;   /* Start of frame buffer mem */
                                /* (physical address) */
    __u32 smem_len;             /* Length of frame buffer mem */
    __u32 type;             /* see FB_TYPE_*        */
    __u32 type_aux;         /* Interleave for interleaved Planes */
    __u32 visual;           /* see FB_VISUAL_*      */ 
    __u16 xpanstep;         /* zero if no hardware panning  */
    __u16 ypanstep;         /* zero if no hardware panning  */
    __u16 ywrapstep;        /* zero if no hardware ywrap    */
    __u32 line_length;      /* length of a line in bytes    */
    unsigned long mmio_start;   /* Start of Memory Mapped I/O   */
                            /* (physical address) */
    __u32 mmio_len;         /* Length of Memory Mapped I/O  */
    __u32 accel;            /* Indicate to driver which */
                            /*  specific chip/card we have  */
    __u16 capabilities;     /* see FB_CAP_*         */
    __u16 reserved[2];      /* Reserved for future compatibility */
};

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