case FB_VISUAL_STATIC_PSE UDOCOLOR fbdevGetColors pScreen nent pdefs v

    ...
    case FB_VISUAL_STATIC_PSEUDOCOLOR:
        ...
        fbdevGetColors (pScreen, 0, nent, pdefs);
    ...

...

void
fbdevGetColors (ScreenPtr pScreen, int fb, int n, xColorItem *pdefs)
{
    ....
    k = ioctl (priv->fd, FBIOGETCMAP, &cmap);
}