Hi, ----- Messaggio originale ----- > Da: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx> > A: Michael Trimarchi <trimarchimichael@xxxxxxxx> > Cc: linux-serial@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Andrew Victor <linux@xxxxxxxxxxxx>; Anti Sullin <anti.sullin@xxxxxxxxxxxxxx> > Inviato: Venerdì 19 settembre 2008, 18:15:51 > Oggetto: Re: [PATCH] atmel_serial: update the powersave handler to match serial core > > I agree it would be useful. It would require changing the port mux > configuration from the driver though, and there's no standardized > interface for doing that. Maybe this is a good motivation to come up > with one? > I think that a driver can do the request to a the gpio layer (may can be implemented by the gpio-lib ) and give it only the gpio. The "gpio-lib" can save and restore the status of the gpio, and request the handler, passing the gpio-id as a data. So when the handler fire, we can now which peripheral is interested on the wake-up event. > Btw, I assume the first character you receive will be lost when you do > this, right? > Yes, I haven't done a lot of test to see how many chars are lost (sure one I think). Depends on the time spent after /* Wait for interrupt to wake us up */ mcr p15, 0, r0, c7, c0, 4 > Haavard Regards Michael __________________________________________________ Do You Yahoo!? Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto spazio gratuito per i tuoi file e i messaggi http://mail.yahoo.it -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
