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Add honeywell,pressure-triplet property that automatically initializes
pmin-pascal, pmax-pascal so that the user is not required to look-up
the chip in the datasheet and convert various units to pascals himself.
Co-developed-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-10-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Refactor driver by splitting the code into core and i2c.
Seemingly redundant read/write function parameters are required for
compatibility with the SPI driver.
Co-developed-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-9-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fix indentation and whitespace in code that will not get refactored.
Make URL inside comment copy-paste friendly.
Co-developed-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-8-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This driver supports 32*3 combinations of fixed ranges and transfer
functions, plus custom ranges.
So statistically a user has more than 99% chance that the provided
default configuration will generate invalid pressure readings if the
bindings are not initialized and the driver is instantiated via sysfs.
The current patch removes this loophole making sure the driver loads
only if the firmware properties are present.
Co-developed-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-7-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Improve driver error resilience by ignoring the measurement if any of
the 3 error flags gets set while interacting with the sensor.
Based on the datasheet, in table 14 on page 14, the status byte
contains:
bit 5 busy flag - 1 if device is busy
bit 2 memory integrity/error flag - 1 if integrity test failed
bit 0 math saturation - 1 if internal math saturation has occurred
Co-developed-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-6-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Honeywell mprls0025pa is a series of pressure sensors.
Add initial I2C support.
Note:
- IIO buffered mode is supported
- SPI mode is not supported
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Link: https://lore.kernel.org/r/ZGNp3SqyOJeEcLsj@arbad
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
