Hi everybody, With the sensor now available to broad public, it is time to also share the driver with the community. MLX90632 is just 3x3mm in size, but with factory calibration offers instant usage in every project. Driver currently provides basic functionality, but I might add some more fancy features after a while. v2 includes comments from Rob Herring (dt-bindings) and Jonathan Cameron (iio), as well as proposal to split out int_sqrt64 function into the linux/kernel.h v3 comments were added to some parts of mlx90632.c and TENTO defines replaced by values. Fixes were done to emissivity read/write and changed to INT_PLUS_MICRO instead. Empty line in int_sqrt.c was removed as it generated a warning when applying. v4 CONFIG_PM replaced by __maybe_unused, some cleanup in suspend, EEPROM_VERSION identifier is grouped together in one single number instead of assembled on fly. Replaced license on top with SPDX. Most importantly - reordered patches so that lib is added before the driver itself (which uses it). v5 Re-ordered patches so that dt-bindings is before driver patch as per Andreas Farber remark. Using same function for Power Management during runtime and suspend, as the runtime state already puts device to lowest possible state (without power off) and that is why special state for suspend is not needed at the current moment. Added few more checks of current PM state and move marking regmap dirty to suspend instead of resume. v6 Adding usage of UNIVERSAL_DEV_PM_OPS macro for PM function mapping. v7 Rework usage of int_sqrt according to Joe Perches and fixing return size to u32 as per Peter Zijlstra suggestion, as sqrt of 64bit number cannot be have more than 32bits. v8 Small style fixup in the comment v9 Usage of fls64 as per Joe Perches suggestion with adjustment to int_sqrt changes from Peter Zijlstra for int_sqrt64 function. Also replaced the macro magic with a simple ifdef in source file. v10 Put defintion for int_sqrt64 for 64 bit machines into the header file as per suggestion of Joe Perches v11 Commit rewording as per David Laight suggestion, because we changed the function to newer int_sqrt in past versions. v12 Simplification of the mlx90632 PM flow v13 Use int_sqrt when values are smaller than ULONG_MAX as per Joe Perches suggestion. Adjustment of PM flow with adding a pm_runtime_disable in probe. Crt Mori (3): lib: Add strongly typed 64bit int_sqrt dt-bindings: iio: temperature: add MLX90632 device bindings iio: temperature: Adding support for MLX90632 .../bindings/iio/temperature/mlx90632.txt | 28 + MAINTAINERS | 7 + drivers/iio/temperature/Kconfig | 12 + drivers/iio/temperature/Makefile | 1 + drivers/iio/temperature/mlx90632.c | 750 +++++++++++++++++++++ include/linux/kernel.h | 9 + lib/int_sqrt.c | 31 + 7 files changed, 838 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/temperature/mlx90632.txt create mode 100644 drivers/iio/temperature/mlx90632.c -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
