On Wed, May 12, 2010 at 11:15:11AM +0530, Shilimkar, Santosh wrote: > > -----Original Message----- > > From: linux-omap-ow...@vger.kernel.org > > [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Arce, > > Abraham > > Sent: Wednesday, May 12, 2010 11:10 AM > > To: Dmitry Torokhov > > Cc: linux-in...@vger.kernel.org; linux-omap@vger.kernel.org > > Subject: RE: [RFC] [PATCH 1/3] OMAP4: Keyboard Controller Support > > > > Dmitry, > > > > 2 comments + one question before sending next version... > > > > [...] > > > > > > > > > +static irqreturn_t omap_keypad_threaded(int irq, void *dev_id) > > > > > > > +{ > > > > > > > > > > > > Why is iti threaded? I fo not see anything that will sleep. > > > > > > > > > > > > It was implemented based on previous comments... > > > > > > > > > > Would you point me to that comment? Like I said, I do not see anything > > > that would possibly sleep in this routine so you don't need to use > > > threaded interrupt. > > > > Using now request_irq based on your comments. In same omap_keypad_interrupt > > disable/clear/enable > > interrupts will be executed > > > > [...] > > > Sorry for jumping into the comments late. Thought this was sorted out. Key > scanning > and debounce timeouts etc still there. Having all these things in ISR itself > isn't good > idea. > > Dmitry, > Don't you think its optimal to push the key-scanning and debounce timeout code > part of bottom half ?? >
If you need debounce then you need to fire a timer and keep doing this until interrupt (or key state) settles. It really depends on the device. -- 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
