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path: root/drivers/iio/light/vl6180.c
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2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330Thomas Gleixner
Based on 1 normalized pattern(s): this file is subject to the terms and conditions of version 2 of the gnu general public license see the file copying in the main directory of this archive for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 55 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.108941081@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-09iio: light: vl6180: Correct ALS scale for non-default gain/integration timeStefan Brüns
The reported scale was only correct for the default settings of 100 ms integration time and gain 1. This aligns the reported scale with the behaviour of any other IIO driver and the documented ABI, but may require userspace changes if someone uses non-default settings. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09iio: light: vl6180: Cleanup als_gain lookup, avoid register readbackStefan Brüns
Instead of manually iterating the array of allowed gain values, use find_closest. Storing the current gain setting avoids accessing the hardware on each query. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09iio: light: vl6180: Avoid readback of integration time registerStefan Brüns
Instead of reading the value from the register on each query, store the set value. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-10-09iio: light: vl6180: Move range check to integration time setter, cleanupStefan Brüns
This improves code uniformity (range checks for als_gain are also done in the setter). Also unmangle rounding and calculation of register value. The calculated integration time it_ms is required in the next patch of the series. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-22iio:light: drop assign iio_info.driver_module and iio_trigger_ops.ownerJonathan Cameron
The equivalent of both of these are now done via macro magic when the relevant register calls are made. The actual structure elements will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-03-25iio:light: Add support for STMicro VL6180 sensorManivannan Sadhasivam
This patch adds support for STMicro VL6180 - ALS, range and proximity sensor. Sensor is capable of measuring the light intensity as well as object distance using TOF (Time of Flight) technology. Signed-off-by: Manivannan Sadhasivam <manivannanece23@gmail.com> Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>