[update] improve lcd structure information.

components/drivers/include/drivers/lcd.h

@@ -47,24 +47,65 @@ struct fb_bitfield
 
 struct fb_var_screeninfo
 {
-    uint32_t xres;
+    uint32_t xres;               /* visible resolution */
     uint32_t yres;
+    uint32_t xres_virtual;       /* virtual resolution  */
+    uint32_t yres_virtual;
+    uint32_t xoffset;            /* offset from virtual to visible */
+    uint32_t yoffset;            /* resolution */
 
-    uint32_t bits_per_pixel;
-
-    struct fb_bitfield red;     /* bitfield in fb mem if true color, */
-    struct fb_bitfield green;   /* else only length is significant */
+    uint32_t bits_per_pixel;     /* guess what */
+    uint32_t grayscale;          /* 0 = color, 1 = grayscale, */
+    /* >1 = FOURCC */
+    struct fb_bitfield red;      /* bitfield in fb mem if true color, */
+    struct fb_bitfield green;    /* else only length is significant */
     struct fb_bitfield blue;
-    struct fb_bitfield transp;  /* transparency         */
+    struct fb_bitfield transp;   /* transparency */
+
+    uint32_t nonstd;             /* != 0 Non standard pixel format */
+
+    uint32_t activate;           /* see FB_ACTIVATE_* */
+
+    uint32_t height;             /* height of picture in mm */
+    uint32_t width;              /* width of picture in mm */
+
+    uint32_t accel_flags;        /* (OBSOLETE) see fb_info.flags */
+
+    /* Timing: All values in pixclocks, except pixclock (of course) */
+    uint32_t pixclock;          /* pixel clock in ps (pico seconds) */
+    uint32_t left_margin;       /* time from sync to picture */
+    uint32_t right_margin;      /* time from picture to sync */
+    uint32_t upper_margin;      /* time from sync to picture */
+    uint32_t lower_margin;
+    uint32_t hsync_len;         /* length of horizontal sync */
+    uint32_t vsync_len;         /* length of vertical sync */
+    uint32_t sync;              /* see FB_SYNC_* */
+    uint32_t vmode;             /* see FB_VMODE_* */
+    uint32_t rotate;            /* angle we rotate counter clockwise */
+    uint32_t colorspace;        /* colorspace for FOURCC-based modes */
+    uint32_t reserved[4];       /* Reserved for future compatibility */
 };
 
 struct fb_fix_screeninfo
 {
-    char id[16];
-    unsigned long smem_start;
-    uint32_t smem_len;
-
-    uint32_t line_length;
+    char id[16];               /* identification string eg "TT Builtin" */
+    unsigned long smem_start;  /* Start of frame buffer mem */
+    /* (physical address) */
+    uint32_t smem_len;         /* Length of frame buffer mem */
+    uint32_t type;             /* see FB_TYPE_* */
+    uint32_t type_aux;         /* Interleave for interleaved Planes */
+    uint32_t visual;           /* see FB_VISUAL_* */
+    uint16_t xpanstep;         /* zero if no hardware panning */
+    uint16_t ypanstep;         /* zero if no hardware panning */
+    uint16_t ywrapstep;        /* zero if no hardware ywrap */
+    uint32_t line_length;      /* length of a line in bytes */
+    unsigned long mmio_start;  /* Start of Memory Mapped I/O */
+    /* (physical address) */
+    uint32_t mmio_len;         /* Length of Memory Mapped I/O */
+    uint32_t accel;            /* Indicate to driver which */
+    /*  specific chip/card we have	*/
+    uint16_t capabilities;     /* see FB_CAP_* */
+    uint16_t reserved[2];      /* Reserved for future compatibility */
 };
 
 #endif