On Thu, Jul 21, 2016 at 03:35:36PM +0200, Rafael J. Wysocki wrote: > On Tuesday, July 19, 2016 04:11:02 PM Lv Zheng wrote: > > There are many AML tables reporting wrong initial lid state, and some of > > them never report lid open state. As a proxy layer acting between, ACPI > > button driver is not able to handle all such cases, but need to re-define > > the usage model of the ACPI lid. That is: > > 1. It's initial state is not reliable; > > 2. There may not be an open event; > > 3. Userspace should only take action against the close event which is > > reliable, always sent after a real lid close. > > > > OTOH, using an input switch event for the lid device on such platforms can > > cause the loss of the close event, but the platforms purposely want to use > > these close events to trigger power saving actions. > > > > So we need to introduce a new ABI, which is input key events based, not > > input switch events based. > > > > This patch adds a set of new input key events so that the new userspace > > programs can use them to handle this usage model correctly. And in the > > meanwhile, the old input switch event is kept so that no old programs will > > be broken by the ABI change. > > > > Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> > > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > Cc: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx> > > Cc: Bastien Nocera: <hadess@xxxxxxxxxx> > > Cc: linux-input@xxxxxxxxxxxxxxx > > Dmitry, any objections here? Yes I have (see the other email). Thanks. -- Dmitry -- 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
