diff options
| author |   Brian Masney <masneyb@onstation.org> | 2018-03-21 06:29:03 -0400 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-03-24 13:32:40 +0000 |
| commit | 9e4701eaef02e1192faca2d0b3529249522f6253 (patch) | |
| tree | 553a5ab022a1a081784992fa5a4613b41a8e71e6 /drivers/staging/iio | |
| parent | staging: iio: tsl2x7x: remove unnecessary code (diff) | |
| download | linux-dev-9e4701eaef02e1192faca2d0b3529249522f6253.tar.xz linux-dev-9e4701eaef02e1192faca2d0b3529249522f6253.zip | |
staging: iio: tsl2x7x: correct interrupt handler trigger
tsl2x7x_event_handler() was not called as expected when the device was
asserting a hardware interrupt. This patch changes the interrupt line
trigger from rising to falling.
The driver was tested on a TSL2772 hooked up to a Raspberry Pi 2. The
interrupt pin also had a 10K pull-up resistor per the requirements from
the datasheet. The relevant device tree binding:
&i2c1 {
tsl2772@39 {
compatible = "amstaos,tsl2772";
reg = <0x39>;
interrupt-parent = <&gpio>;
interrupts = <22 0x2>;
};
};
With this patch, iio_event_monitor now shows the events when the
channels are outside the defined interrupt thresholds.
$ sudo ./iio_event_monitor tsl2772
Found IIO device with name tsl2772 with device number 0
Event: time: 1478193460053760446, type: proximity, channel: 0, evtype:
thresh, direction: either
...
Event: time: 1478193463020270185, type: illuminance, channel: 0, evtype:
thresh, direction: either
...
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/staging/iio')
| -rw-r--r-- | drivers/staging/iio/light/tsl2x7x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c index 82cf9d853b18..59921850a226 100644 --- a/drivers/staging/iio/light/tsl2x7x.c +++ b/drivers/staging/iio/light/tsl2x7x.c @@ -1763,7 +1763,7 @@ static int tsl2x7x_probe(struct i2c_client *clientp, ret = devm_request_threaded_irq(&clientp->dev, clientp->irq, NULL, &tsl2x7x_event_handler, - IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "TSL2X7X_event", indio_dev); |