Re: Requesting different interrupt triggers for the same device type

[Alexander Stein <alexander.stein@systec-electronic.com>]

Hello Grygorii,

On Wednesday 03 December 2014 13:06:18, Grygorii Strashko wrote:
> On 12/02/2014 06:45 PM, Alexander Stein wrote:
> > Hi,
> >
> > I have a board which has two PCA9555 attached. Due to hardware wirings each has a different interrupt trigger. One is active low and one is active high and each has a different interrupt parent.
> > How can I specify this in the device tree? Do I need to set IRQ_TYPE_LEVEL_LOW and IRQ_TYPE_LEVEL_HIGH approriately? How can this work, when the driver requests the interrupt like this?
> >> ret = devm_request_threaded_irq(&client->dev,
> >> 			client->irq,
> >> 			NULL,
> >> 			pca953x_irq_handler,
> >> 			IRQF_TRIGGER_LOW | IRQF_ONESHOT |
> >> 			IRQF_SHARED,
> >> 			dev_name(&client->dev), chip);
> >
> > The interrupt flags seem rather fixed. Any comments/hints?
> 
> See, http://www.spinics.net/lists/linux-gpio/msg02731.html
> It may help.

Well, removing that trigger here (and in another driver where INT line is shared) it "works". It seems that each (DT-) driver should remove those explicit flags, no?

Best regards,
Alexander
-- 
Dipl.-Inf. Alexander Stein

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