From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Alexander Stein <alexander.stein@systec-electronic.com>,
linux-gpio@vger.kernel.org
Subject: Re: Requesting different interrupt triggers for the same device type
Date: Wed, 3 Dec 2014 13:06:18 +0200 [thread overview]
Message-ID: <547EEEAA.4040605@ti.com> (raw)
In-Reply-To: <4282463.CMMRv84cbI@ws-stein>
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.
regards,
-grygorii
next prev parent reply other threads:[~2014-12-03 11:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-02 16:45 Requesting different interrupt triggers for the same device type Alexander Stein
2014-12-03 11:06 ` Grygorii Strashko [this message]
2014-12-04 8:27 ` Alexander Stein
2014-12-04 12:06 ` Grygorii Strashko
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