Messages in this thread | | | Date | Mon, 14 Mar 2011 22:02:06 -0700 | From | Dmitry Torokhov <> | Subject | Re: [PATCH] input: touchscreen: use polling mode in 88pm860x |
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On Mon, Mar 14, 2011 at 05:41:35AM -0700, Haojian Zhuang wrote: > > > >-----Original Message----- > >From: Dmitry Torokhov [mailto:dmitry.torokhov@gmail.com] > >Sent: 2011年3月13日 2:44 PM > >To: Haojian Zhuang > >Cc: johnpol@2ka.mipt.ru; sameo@linux.intel.com; a.zummo@towertech.it; > >lrg@slimlogic.co.uk; broonie@opensource.wolfsonmicro.com; > >rpurdie@rpsys.net; linux-kernel@vger.kernel.org > >Subject: Re: [PATCH] input: touchscreen: use polling mode in 88pm860x > > > >On Mon, Mar 07, 2011 at 11:43:14PM +0800, Haojian Zhuang wrote: > >> Measuring point on touchscreen with IRQ mode can only monitor pen-down > >> event. If finger is moving on touchscreen, it can't be monitored by > >> IRQ pen-down event. So switch to polling mode after pen-down event. > >> > > > >Instead of scheduling work you could stay in the interrupt handler > >(which is a separate thread) and poll from it. Or is it a nested > >interrupt and it is sharing the interrupt thread? > > > >Thanks. > > > >-- > >Dmitry > > I'm using a nested interrupt. Do you mean that I should keep polling in the nested interrupt handler? >
No, I do not believe you can poll from the nested handler since I believe it shares the thread with other interrupts. In non-nested case you could though.
Thanks.
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