/* Scroll up/down for the number of specified lines.  */
void hx8347a_scroll(int32_t ul_lines)
/* Scroll up/down for the number of specified lines.  */
void hx8347a_scroll(int32_t ul_lines)
{
	hx8347a_write_register(HX8347A_VERTICAL_SCROLL_START_ADDR2,
			HX8347A_VERTICAL_SCROLL_START_ADDR2_VSP((ul_lines >> 8) & 0xF));
	hx8347a_write_register(HX8347A_VERTICAL_SCROLL_START_ADDR1,
			HX8347A_VERTICAL_SCROLL_START_ADDR1_VSP(ul_lines & 0xF));
}