GMUX_PORT_SWITCH_DDC
if (gmux_read8(gmux_data, GMUX_PORT_SWITCH_DDC) == 1)
gmux_write8(gmux_data, GMUX_PORT_SWITCH_DDC, 1);
gmux_write8(gmux_data, GMUX_PORT_SWITCH_DDC, 2);
gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 1);
gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 2);