Re: Threaded interrupts for synaptic touchscreen in HTC dream

[Mark Brown <broonie@opensource.wolfsonmicro.com>]

On Wed, Jul 22, 2009 at 09:39:32AM -0700, David Brownell wrote:

> The normal model is that boards don't get involved with that level of
> logic ... all IRQs get set up once on generic code, and flow handlers
> don't change.  Or if they do change, it's done when changing the IRQ's
> trigger mode from edge to level, or vice versa.

> Can that be cleaned up a bit, so that the handle_level_oneshot_irq()
> and unmask_oneshot_irq() stuff kicks in automatically when needed,
> instead of requiring board-specific (or driver-specific) code to get
> that stuff right?

Thomas was reluctant to do that but up till now every single user has
been asking for it.  A flag in the driver requesting the behaviour
sounds OK to me, there are devices that can use threaded IRQs while
interacting with the device in the primary handler NAPI style.