On Fri, Mar 12, 2010 at 11:57, Nithish Mahalingam <nithish.m@xxxxxxxxx> wrote: >> >>> > Has support in user space hardware abstraction layers for runtime >> >>> > power management been added? It seems to me that we need this. >> >>> >> >>> There is no major project I know of, which uses these things, and >> >>> nothing I know of people would work on at the moment. >> >> >> >> If this were to be added, which project should it be added to? >> > >> > I don't think there is an existing project that would really fit here. >> > >> >> I don't think handling this with udev scripts is a good idea, because >> >> you want to be able to revisit such decisions when you go to >> >> battery power or power is low, for example whether you want to >> >> charge your cell phone. >> > >> > Right, that needs policy to apply, depending on the current state. But >> > unfortunately there is no existing infrastructure we could easily >> > extend, it would be something new to come up with. > > Shouldn't it suffice to extend usb_device namespace values in HAL > specification for runtime PM and once added let distribution > specific user space PM framework handle this. > http://people.redhat.com/davidz/hal-spec/hal-spec.html#device-properties-usb > > I guess the industry is moving towards DeviceKit, anyway that is just > implementation specific. There is no HAL anymore, it's dead and no longer maintained. DeviceKit was only a temporary name, and does not exist as a project. HAL is split into pieces, like udisks, upower, and along with udev, PulseAudio, NetworkManager, ConsoleKit, PolicyKit, ..., there are specialized daemons taking care of domain-specific tasks. There is nothing really where USB power management would really fit in today. Kay -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
