> -----Original Message----- > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > owner@xxxxxxxxxxxxxxx] On Behalf Of Aaron Lu > Sent: Tuesday, October 09, 2012 2:23 PM > To: Rafael J. Wysocki; Len Brown > Cc: Huang, Ying; Zhang, Rui; linux-acpi@xxxxxxxxxxxxxxx > Subject: Discussion on device's runtime wake capability > Importance: High > > Hi all, > > We are using _PRW as a hint to see if a device supports wakeup, this is > fine for device which is able to wake the system in a sleep state, but > not to wake itself when system is at S0. > > Moreover, when we are to arm the device runtime wake, I think there is > no need to power on the power resources referenced in _PRW, those power > resources should be used to give the device ability to wake the system > from a sleep state, not to wake itself when system is at S0, so > powering thoses power resources on for run wake is a waste. > Sounds reasonable to me. To do runtime wake, we only need to power on the resources in _PR0. > But I may miss something, so it would be very kind of you to point it > out if things are not like what I've thought, thanks. > > BTW, _S0W seems to be a good hint whether the device supports run wake > from ACPI's perspective. > Agreed. > -Aaron > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" > in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo > info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
