+int
+stdvga_get_window(struct vgamode_s *vmode_g, int window)
+{
+ return -1;
+}
+
+int
+stdvga_set_window(struct vgamode_s *vmode_g, int window, int val)
+{
+ return -1;
+}
+
+int
+stdvga_get_linelength(struct vgamode_s *vmode_g)
+{
+ u8 val = stdvga_crtc_read(stdvga_get_crtc(), 0x13);
+ return val * stdvga_bpp_factor(vmode_g) * 2;
+}
+
+int
+stdvga_set_linelength(struct vgamode_s *vmode_g, int val)
+{
+ int factor = stdvga_bpp_factor(vmode_g) * 2;
+ stdvga_crtc_write(stdvga_get_crtc(), 0x13, DIV_ROUND_UP(val, factor));
+ return 0;
+}
+
+int
+stdvga_get_displaystart(struct vgamode_s *vmode_g)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ int addr = (stdvga_crtc_read(crtc_addr, 0x0c) << 8
+ | stdvga_crtc_read(crtc_addr, 0x0d));
+ return addr * stdvga_bpp_factor(vmode_g);
+}
+
+int
+stdvga_set_displaystart(struct vgamode_s *vmode_g, int val)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ val /= stdvga_bpp_factor(vmode_g);
+ stdvga_crtc_write(crtc_addr, 0x0c, val >> 8);
+ stdvga_crtc_write(crtc_addr, 0x0d, val);
+ return 0;
+}
+