enum vga_switcheroo_state — client power state
enum vga_switcheroo_state { VGA_SWITCHEROO_OFF, VGA_SWITCHEROO_ON, VGA_SWITCHEROO_NOT_FOUND };
off
on
client has not registered with vga_switcheroo.
Only used in vga_switcheroo_get_client_state
which in turn is only
called from hda_intel.c