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
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