diff options
Diffstat (limited to 'drivers/iio/common/st_sensors/st_sensors_trigger.c')
| -rw-r--r-- | drivers/iio/common/st_sensors/st_sensors_trigger.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c index 6a8c98327945..da72279fcf99 100644 --- a/drivers/iio/common/st_sensors/st_sensors_trigger.c +++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c @@ -64,6 +64,19 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev, "rising edge\n", irq_trig); irq_trig = IRQF_TRIGGER_RISING; } + + /* + * If the interrupt pin is Open Drain, by definition this + * means that the interrupt line may be shared with other + * peripherals. But to do this we also need to have a status + * register and mask to figure out if this sensor was firing + * the IRQ or not, so we can tell the interrupt handle that + * it was "our" interrupt. + */ + if (sdata->int_pin_open_drain && + sdata->sensor_settings->drdy_irq.addr_stat_drdy) + irq_trig |= IRQF_SHARED; + err = request_threaded_irq(irq, iio_trigger_generic_data_rdy_poll, NULL, |