video: Implement additional video API functions in cfb_console

Implement the new video API functions to provide access to screen size,
etc.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>

drivers/video/cfb_console.c

@@ -2257,3 +2257,45 @@ int drv_video_init(void)
 	/* Return success */
 	return 1;
 }
+
+void video_position_cursor(unsigned col, unsigned row)
+{
+	console_col = min(col, CONSOLE_COLS - 1);
+	console_row = min(row, CONSOLE_ROWS - 1);
+}
+
+int video_get_pixel_width(void)
+{
+	return VIDEO_VISIBLE_COLS;
+}
+
+int video_get_pixel_height(void)
+{
+	return VIDEO_VISIBLE_ROWS;
+}
+
+int video_get_screen_rows(void)
+{
+	return CONSOLE_ROWS;
+}
+
+int video_get_screen_columns(void)
+{
+	return CONSOLE_COLS;
+}
+
+void video_clear(void)
+{
+#ifdef VIDEO_HW_RECTFILL
+	video_hw_rectfill(VIDEO_PIXEL_SIZE,	/* bytes per pixel */
+			  0,			/* dest pos x */
+			  0,			/* dest pos y */
+			  VIDEO_VISIBLE_COLS,	/* frame width */
+			  VIDEO_VISIBLE_ROWS,	/* frame height */
+			  bgx			/* fill color */
+	);
+#else
+	memsetl(video_fb_address,
+		(VIDEO_VISIBLE_ROWS * VIDEO_LINE_LEN) / sizeof(int), bgx);
+#endif
+}