On Tue, Feb 07, 2023 at 04:07:17PM +0800, Linyu Yuan wrote:
> > Note that for alt modes you can't do this. They can be bind to
> > drivers - there is a bus for them.
>
> but even in the bus, there is power management,
>
> struct bus_type typec_bus = {
> .name = "typec",
> .dev_groups = typec_groups,
> .match = typec_match,
> .uevent = typec_uevent,
> .probe = typec_probe,
> .remove = typec_remove,
> };
>
> we can disable it, right ?
No. It does not matter if the bus does not have the PM ops, a driver
can still supply the PM ops for the device.
Check how it's handled in drivers/base/power/main.c. Basically, if the
bus, pm domain, device type, or the class don't supply the PM ops,
the drivers own PM ops are then just used directly.
thanks,
--
heikki
