There are some ADIS devices that can configure the data ready pin polarity. Hence, we cannot hardcode our IRQ mask as IRQF_TRIGGER_RISING since we might want to have it as IRQF_TRIGGER_FALLING. Signed-off-by: Nuno Sá <nuno.sa@xxxxxxxxxx> --- Changes in v2: * Add kernel doc-string for `irq-mask`. Changes in v3: * Removed unnecessary inline; * Renamed `__adis_validate_irq_mask` to `adis_validate_irq_mask` to keep lib consistency; * Cosmetics in logs. drivers/iio/imu/adis_trigger.c | 26 ++++++++++++++++++++++++-- include/linux/iio/imu/adis.h | 2 ++ 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/drivers/iio/imu/adis_trigger.c b/drivers/iio/imu/adis_trigger.c index a36810e0b1ab..df88b74f4c2b 100644 --- a/drivers/iio/imu/adis_trigger.c +++ b/drivers/iio/imu/adis_trigger.c @@ -34,6 +34,20 @@ static void adis_trigger_setup(struct adis *adis) iio_trigger_set_drvdata(adis->trig, adis); } +static int adis_validate_irq_mask(struct adis *adis) +{ + if (!adis->irq_mask) { + adis->irq_mask = IRQF_TRIGGER_RISING; + return 0; + } else if (adis->irq_mask != IRQF_TRIGGER_RISING && + adis->irq_mask != IRQF_TRIGGER_FALLING) { + dev_err(&adis->spi->dev, "Invalid IRQ mask: %08lx\n", + adis->irq_mask); + return -EINVAL; + } + + return 0; +} /** * adis_probe_trigger() - Sets up trigger for a adis device * @adis: The adis device @@ -54,9 +68,13 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev) adis_trigger_setup(adis); + ret = adis_validate_irq_mask(adis); + if (ret) + return ret; + ret = request_irq(adis->spi->irq, &iio_trigger_generic_data_rdy_poll, - IRQF_TRIGGER_RISING, + adis->irq_mask, indio_dev->name, adis->trig); if (ret) @@ -96,9 +114,13 @@ int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev) adis_trigger_setup(adis); + ret = adis_validate_irq_mask(adis); + if (ret) + return ret; + ret = devm_request_irq(&adis->spi->dev, adis->spi->irq, &iio_trigger_generic_data_rdy_poll, - IRQF_TRIGGER_RISING, + adis->irq_mask, indio_dev->name, adis->trig); if (ret) diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index ac94c483bf2b..ed41c6b96d14 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -87,6 +87,7 @@ struct adis_data { * @msg: SPI message object * @xfer: SPI transfer objects to be used for a @msg * @current_page: Some ADIS devices have registers, this selects current page + * @irq_mask: IRQ handling flags as passed to request_irq() * @buffer: Data buffer for information read from the device * @tx: DMA safe TX buffer for SPI transfers * @rx: DMA safe RX buffer for SPI transfers @@ -113,6 +114,7 @@ struct adis { struct spi_message msg; struct spi_transfer *xfer; unsigned int current_page; + unsigned long irq_mask; void *buffer; uint8_t tx[10] ____cacheline_aligned; -- 2.17.1