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| author |   Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> | 2017-08-30 13:50:39 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-10-09 21:01:45 +0100 |
| commit | e72a060151e5bb673af24993665e270fc4f674a7 (patch) | |
| tree | 4931e3d26c32eb9f554b91b9a10d4b50d1f24a51 /include/linux/iio/common | |
| parent | iio: adc: mcp320x: Add support for mcp3550/1/3 (diff) | |
| download | linux-dev-e72a060151e5bb673af24993665e270fc4f674a7.tar.xz linux-dev-e72a060151e5bb673af24993665e270fc4f674a7.zip | |
iio: st_sensors: add register mask for status register
Introduce register mask for data-ready status register since
pressure sensors (e.g. LPS22HB) export just two channels
(BIT(0) and BIT(1)) and BIT(2) is marked reserved while in
st_sensors_new_samples_available() value read from status register
is masked using 0x7.
Moreover do not mask status register using active_scan_mask since
now status value is properly masked and if the result is not zero the
interrupt has to be consumed by the driver. This fix an issue on LPS25H
and LPS331AP where channel definition is swapped respect to status
register.
Furthermore that change allows to properly support new devices
(e.g LIS2DW12) that report just ZYXDA (data-ready) field in status register
to figure out if the interrupt has been generated by the device.
Fixes: 97865fe41322 (iio: st_sensors: verify interrupt event to status)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include/linux/iio/common')
| -rw-r--r-- | include/linux/iio/common/st_sensors.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 7b0fa8b5c120..ce0ef1c0a30a 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -139,7 +139,7 @@ struct st_sensor_das { * @mask_ihl: mask to enable/disable active low on the INT lines. * @addr_od: address to enable/disable Open Drain on the INT lines. * @mask_od: mask to enable/disable Open Drain on the INT lines. - * @addr_stat_drdy: address to read status of DRDY (data ready) interrupt + * struct stat_drdy - status register of DRDY (data ready) interrupt. * struct ig1 - represents the Interrupt Generator 1 of sensors. * @en_addr: address of the enable ig1 register. * @en_mask: mask to write the on/off value for enable. @@ -152,7 +152,10 @@ struct st_sensor_data_ready_irq { u8 mask_ihl; u8 addr_od; u8 mask_od; - u8 addr_stat_drdy; + struct { + u8 addr; + u8 mask; + } stat_drdy; struct { u8 en_addr; u8 en_mask; |