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4 Commits

Author SHA1 Message Date
Jonathan Cameron
ecdef5b831 iio: temp: max31865: Fix alignment for DMA safety 
____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_DMA_MINALIGN definition

Fixes: e112dc4e18ea ("iio: temperature: Add MAX31865 RTD Support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Navin Sankar Velliangiri <navin@linumiz.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-92-jic23@kernel.org
 2022-06-14 11:53:19 +01:00
Andy Shevchenko
615b5e199a iio: temperature: max31865: Make use of device properties 
Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Add mod_devicetable.h include.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220413185335.21743-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2022-04-28 19:30:19 +01:00
Lars-Peter Clausen
3c1d2fdd80 iio: max31865: Use sysfs_emit() 
sysfs_emit() is preferred over raw s*printf() for sysfs attributes since it
knows about the sysfs buffer specifics and has some built-in checks for
size and alignment.

Use sysfs_emit() to format the custom ``in_filter_notch_center_frequency`
and fault_ovuv` device attributes of the max31865 driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211216185217.1054495-10-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2022-01-23 18:03:36 +00:00
Navin Sankar Velliangiri
e112dc4e18 iio: temperature: Add MAX31865 RTD Support 
This patch adds support for Maxim MAX31865 RTD temperature
sensor support.

More information can be found in:
https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf

Signed-off-by: Navin Sankar Velliangiri <navin@linumiz.com>
Link: https://lore.kernel.org/r/20210824050123.71289-1-navin@linumiz.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2021-09-14 12:00:33 +01:00