On Wed, Dec 09, 2009 at 08:15:26AM -0800, Cory Maccarrone wrote: > On Wed, Dec 9, 2009 at 3:32 AM, Ferenc Wagner <wf...@niif.hu> wrote: > > Cory Maccarrone <darkstar6...@gmail.com> writes: > > > > Interesting. Btw. I'd like to convert gpio-keys from edge-triggered to > > level-triggered interrupts. Would that work for your hardware? > > I'm fairly certain it wouldn't. Each of the interrupts on my hardware > has a corresponding bit in a control register that determines if it's > rising or falling-edge triggered -- thus the need for my patch. To > capture both directions, it's necessary to modify the control register > when a falling edge is detected, so that the corresponding rising edge > can be collected afterward.
This kind of ugliness should be hidden in irqchip driver. See mfd/asic3.c for an example. > May I ask why you're thinking of > converting to level-triggering? > > Perhaps it would be better to provide an option in the platform_device > structure to set edge- or level-triggering, similar to the change I'm > proposing for interrupts that can only signal one way at a time. > Yes, we need a way fro platform code to specify desired interrupt flags but I don't believe we should be reconfiguring them on the fly. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
