On Tue, Jul 14, 2015 at 09:42:00AM +0200, Dirk Behme wrote: > Hi Dmitry, > > On 13.07.2015 19:04, Dmitry Torokhov wrote: > >On Mon, Jul 13, 2015 at 02:49:37PM +0200, Dirk Behme wrote: > >>From: Oleksij Rempel <external.Oleksij.Rempel@xxxxxxxxxxxx> > >> > >>Remove the IRQ GPIO polling and request. Existing DTS should not be affected > >>since the IRQ registration was and is based on "interrupts" descriptor of DTS. > > > >But this means that consecutive touchscreen readings will be delayed by > >the time it takes to schedule the thread. > > > >What is the motivation for this change? > > > This is the generic part we've done for a special hardware > configuration: There is some hardware which uses an I2C Serializer / > Deserializer (SerDes) to communicate with the zFroce touch driver. > In this case the SerDes will be configured as an interrupt > controller and the zForce driver will have no access to poll the > GPIO line. In this case can we make gpio optional and use it if it is specified falling back on one read per ISR invocation in its absence? Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
