Re: [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen

[Andreas Kemnade]

Hi,

On Sun, 12 Dec 2021 21:45:48 -0800
Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote:


> > > > +     rc = devm_request_threaded_irq(dev, irq, NULL, cyttsp5_handle_irq,
> > > > +                                    IRQF_TRIGGER_FALLING | IRQF_ONESHOT,  
> > >
> > > Please do not override platform setup with hardcoded triggers. Also, it
> > > is strongly recommended to use level interrupts for these peripherals.
> > >
> > > This is also likely unsafe if controller is not completely shut off and
> > > is capable of generating interrupts given input device is not yet
> > > allocated.  
> > 
> > I have dropped the `IRQF_TRIGGER_FALLING |`
> > 
> > I have tried to use level interrupts, but I can't get the device
> > working with them.  
> 
> That is weird, does the interrupt controller support level interrupts?
> 
hmm, it should, at least on the imx6 I am using them for some other
devices, I guess, on the imx7 they should work, too.
I hope I find time to give that a try the next days.

Regards,
Andreas