Hi Paul, On Wed, 2020-01-08 at 14:26 -0300, Paul Cercueil wrote: > Hi Greg, > > > Le mer., janv. 8, 2020 at 17:53, Greg Kroah-Hartman > <gregkh@xxxxxxxxxxxxxxxxxxx> a écrit : > > On Tue, Jan 07, 2020 at 01:29:01AM +0100, Paul Cercueil wrote: > >> Register a power supply charger, whose online state depends on > >> whether > >> the USB role is set to device or not. > > > > That says _what_ you are doing, but I have no idea _why_ you want to > > do > > this. > > > > What is this going to cause to have happen? What new userspace api is > > going to result? What will a user do with this? > > This is useful when the USB role is the only way to know if the device > is charging from USB. There is no charger IC on your platform? > > The API is the standard power supply charger API, you get a > /sys/class/power_supply/xxx/online node which tells you the state of > the charger. > > The sole purpose of this is to give userspace applications a way to > know whether or not the charger is plugged. > > > Is this going to always show up, no matter if the role is not even > > relevant for a power supply? > > I guess it'd always show up, yes. In which case would the role not be > relevant for a power supply? Do you also need it if the platform don't have battery? > Is gpio-b-connector not always used for > OTG connectors? It also supports device only mode, usually uses vBus pin to enable/disable controller > > Cheers, > -Paul > > > > You need a lot more text here to make this mergable. > > > > thanks, > > > > greg k-h > >
