From: Alexander Stein <alexander.stein@systec-electronic.com>
To: linux-gpio@vger.kernel.org
Subject: Requesting different interrupt triggers for the same device type
Date: Tue, 02 Dec 2014 17:45:53 +0100 [thread overview]
Message-ID: <4282463.CMMRv84cbI@ws-stein> (raw)
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?
Best regards,
Alexander
--
Dipl.-Inf. Alexander Stein
SYS TEC electronic GmbH
Am Windrad 2
08468 Heinsdorfergrund
Tel.: 03765 38600-1156
Fax: 03765 38600-4100
Email: alexander.stein@systec-electronic.com
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next reply other threads:[~2014-12-02 16:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-02 16:45 Alexander Stein [this message]
2014-12-03 11:06 ` Requesting different interrupt triggers for the same device type Grygorii Strashko
2014-12-04 8:27 ` Alexander Stein
2014-12-04 12:06 ` Grygorii Strashko
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