diff options
| author | Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> | 2017-08-29 13:45:11 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-09-03 17:39:39 +0100 |
| commit | c65e3d6ef4bfdc4c8460509f08507cf7dc026974 (patch) | |
| tree | dc3f17d3e73e265983a2a31d8f138d90852de95d /drivers/iio | |
| parent | 3af75db12e3d3537bc01c06bbdc876cb17e82b35 (diff) | |
iio: magnetometer: st_magn: fix drdy line configuration for LIS3MDL
Data-ready line in LIS3MDL is routed to drdy pin and it is not possible
to select a different INT pin. st_sensors_set_dataready_irq() assumes
that if drdy int address is not exported in register map, irq trigger
is not supported by the sensor and hw_irq_trigger is always false.
Based on this configuration st_sensors_irq_thread does not consume
generated interrupt causing an unhandled irq.
Fix this taking into account status register address in
st_sensors_set_dataready_irq()
Fixes: 90efe0556292 (iio: st_sensors: harden interrupt handling)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/common/st_sensors/st_sensors_core.c | 11 | ||||
| -rw-r--r-- | drivers/iio/magnetometer/st_magn_core.c | 4 |
2 files changed, 14 insertions, 1 deletions
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index d99bb1460fe2..02e833b14db0 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -463,8 +463,17 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable) u8 drdy_mask; struct st_sensor_data *sdata = iio_priv(indio_dev); - if (!sdata->sensor_settings->drdy_irq.addr) + if (!sdata->sensor_settings->drdy_irq.addr) { + /* + * there are some devices (e.g. LIS3MDL) where drdy line is + * routed to a given pin and it is not possible to select a + * different one. Take into account irq status register + * to understand if irq trigger can be properly supported + */ + if (sdata->sensor_settings->drdy_irq.addr_stat_drdy) + sdata->hw_irq_trigger = enable; return 0; + } /* Enable/Disable the interrupt generator 1. */ if (sdata->sensor_settings->drdy_irq.ig1.en_addr > 0) { diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c index 703e77008652..2e36d746f5bc 100644 --- a/drivers/iio/magnetometer/st_magn_core.c +++ b/drivers/iio/magnetometer/st_magn_core.c @@ -315,6 +315,10 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = { }, }, }, + .drdy_irq = { + /* drdy line is routed drdy pin */ + .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, + }, .multi_read_bit = true, .bootime = 2, }, |