Re: [PATCH] driver-core: platform: automatically mark wakeup devices

From: Sudeep Holla
Date: Mon Jan 18 2016 - 10:23:26 EST

On Mon, Jan 18, 2016 at 2:47 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Sunday, January 17, 2016 06:11:38 PM Dmitry Torokhov wrote:
>> When probing platform drivers let's check if corresponding devices have
>> "wakeup-source" property defined (either in device tree, ACPI, or static
>> platform properties) and automatically enable such devices as wakeup
>> sources for the system. This will help us standardize on the name for this
>> property and reduce amount of boilerplate code in the drivers.
> ACPI has other ways of telling the OS that the device is wakeup-capable,
> but I guess the property in question can be used too (as long as it is
> consistent with the other methods).

Just curious to know what you mean when you say this property can also
be used with ACPI. Do you mean we could use "wakeup-source" DSD ?

If so, won't that go against rule for DSD (i.e we *should not* bypass the
existing mechanisms defined by the ACPI, e.g. _SxW in this case)